Patent Publication Number: US-8966720-B2

Title: Slider for slide fastener

Description:
This application is a national stage application of PCT/JP2010/073420 which claims priority to PCT/US2009/071664, both of which are incorporated herein by reference. 
     TECHNICAL FIELD 
     The invention relates to a slider which is used in a slide fastener, and more particularly to a slider having a locking pawl and provided with a stop mechanism which can retain a stop state with respect to an element row of the slider fastener. 
     BACKGROUND ART 
     Conventionally, the slide fastener has been used in various products such as clothes, bags or the like and various functions are demanded in accordance with the product using the slide fastener. For example, with regard to a slider which is one of constructing parts of the slide fastener, there has been a case that it is demanded a function (a stop mechanism) of retaining the slider at a stop position of the element row at a time of stopping a sliding motion with respect to the element row of the slide fastener. 
     One example of the slider provided with the stop mechanism mentioned above is disclosed, for example, in Japanese Utility Model Application Publication No. 63-1854 (Patent Document 1), WO 2010/070744 (Patent Document 2) and the like. The sliders of the Patent Document 1 and the Patent Document 2 are provided with a stop mechanism by an installation of a leaf spring member having a locking pawl to a slider body. 
     Specifically describing, the sliders described in the Patent Document 1 and the Patent Document 2 have a slider body, a tab which is rotatably retained in the slider body, and a leaf spring member which is installed to the slider body. 
     The slider body has upper and lower blades, a connecting post which connects between one end portions of the upper and lower blades, and flanges which are arranged in right and left side portions of the upper and lower blades. Further, the slider body has shoulder ports which are arranged in right and left both sides of the connecting post, and a rear port which is arranged in another end, and a Y-shaped element guide path connecting the right and left shoulder ports and the rear port is formed between the upper and lower blades. 
     Further, the upper blade of the slider body has right and left tab attachment posts which rotatably retain one end of the tab, and an insertion groove which is arranged in a center portion in a horizontal direction of the upper blade, and inserts the leaf spring member. 
     The tab retaining portion of the upper blade has a pair of front and rear post portions which are provided in a protruding manner in right and left both sides of the insertion groove, and an attachment shaft portion mentioned below of the tab is rotatably retained to the tab attachment post by caulking the front and rear posts in such a direction as to move close to each other, after the attachment shaft portion of the tab is inserted between the front and rear post portions. 
     The insertion groove of the upper blade has a groove width which is equal to or more than a width of the leaf spring member, and is formed in such a manner that the leaf spring member can be stably inserted. Further, in a rear end portion of the insertion groove is pierced a pawl hole which can insert a locking pawl mentioned below of the leaf spring member at a time when the leaf spring member is arranged within the insertion groove. 
     The tab has a tab main body portion, right and left arm portions which are extended in parallel from one end of the tab main body portion, an attachment shaft portion which connects apical portions of the right and left arm portions, and the attachment shaft portion of the tab is provided with a cam portion which has a cam shaped cross section. For example, in the case of the Patent Document 1, the cam portion is provided by forming a cross section of the attachment shaft portion in a shape obtained by cutting a partial circular arc from a circular form, and in the case of the Patent Document 2, the cam portion is provided by protruding a projection portion to the tab main body portion side from the center portion of the attachment shaft portion. 
     The leaf spring member is provided with elasticity, and is installed to the slider body in such a manner as to cover the attachment shaft portion of the tab and the cam portion from the above. Further, a locking pawl which can move into and out of the element guide path via a pawl hole of the slider body is arranged in one end portion of the leaf spring member. 
     In the case of assembling the slider which is constructed by the slider body, the tab and the leaf spring member as mentioned above, first of all, the attachment shaft portion of the tab is assembled in the right and left tab attachment posts which are arranged in the slider body. Specifically, the front and rear post portions are inflected in such a direction of moving close to each other so as to be caulked, in a state in which the attachment shaft portion of the tab is inserted between the front and rear post portions in the tab attachment post. In accordance with this, the tab is retained so as to be rotatable around the attachment shaft portion with respect to the slider body. 
     At this time, the tab prevents a position of the tab from being deviated in a slider width direction from the slider body by making a difference of a distance between the right and left arm portions arranged in the tab, and a distance between outer side surfaces of the right and left tab attachment posts arranged in the slider body small, and the cam portion of the tab is aligned with an appropriate position. 
     Subsequently, the leaf spring member is assembled in the slider body which retains the tab. In this case, the leaf spring member is installed to the slider body in such a manner as to cover the attachment shaft portion of the tab and the cam portion from the above in the leaf spring member, and insert the locking pawl of the leaf spring member to the pawl hole of the slider body. In accordance with this, the slider is assembled. 
     The slider assembled as mentioned above is structured such that the locking pawl of the leaf spring member protrudes into the element guide path via the pawl hole of the slider body, for example, in the case that the tab is tilted to the rear port side. In accordance with this, since the locking pawl is engaged with the element row of the slide fastener, the slider is prevented from sliding along the element row, and the stop state of the slider is retained. 
     On the other hand, since the leaf spring member is lifted up by the cam portion which is provided in the attachment shaft portion of the tab at a time when the tab is raised up with respect to the slider body, or is brought down to the front end side of the slider, the locking pawl of the leaf spring member gets out of (evacuates from) the element guide path. In accordance with this, the state in which the locking pawl is engaged with the element row is cancelled, and it is possible to smoothly slide the slider along the element row. 
     Further, in the sliders described in the Patent Document 1 and the Patent Document 2, as mentioned above, the attachment shaft portion of the tab is retained to the tab attachment posts by caulking the right and left tab attachment posts arranged in the slider body. In accordance with this, it is possible to firmly fix the attachment shaft portion of the tab to a predetermined position of the slider body. 
     Accordingly, the tab is hard to be detached from the slider body, and it is possible to securely construct the stop mechanism of the slider so as to smoothly function. Further, since the stop mechanism in the sliders described in the Patent Document 1 and the Patent Document 2 can be structured such as to be lower than a rising height of the tab attaching post after the caulking process, there can be obtained such an effect that can make a thickness of a whole of the slider thin. 
     PRIOR ART DOCUMENT 
     Patent Document 
     
         
         Patent Document 1: Japanese Utility Model Application Publication No. 63-1854 
         Patent Document 2: WO 2010/070744 
       
    
     SUMMARY OF THE INVENTION 
     Problems to be Solved by the Invention 
     In the slider provided with the stop mechanism described in the Patent Document 1 and the Patent Document 2 as mentioned above, since the right and left tab attachment posts are exposed to the outer portion, and the leaf spring member having the locking pawl is installed to the slider body in such a manner as to cover the attachment shaft portion of the tab and the cam portion from the above, the leaf spring member is also exposed to the outer portion of the slider. 
     In the slider used in the slide fastener, there has been such a problem that if the tab attachment post and the leaf spring member are exposed so as to be visible from the outer portion, an outer appearance quality of the slider, and an outer appearance quality of the slide fastener are lowered, and a touch feeling is deteriorated. 
     Further, in the case that the leaf spring member is exposed to the outer portion, there is a high possibility that the leaf spring member experiences a shock or the like from the outer portion. In this case, when the leaf spring member experiences a shock or the like from the outer portion, a deformation or a breakage of the leaf spring member tends to be generated, and there has been such a problem that a trouble of the stop mechanism of the slider is caused. 
     On the other hand, in the sliders of the Patent Document 1 and the Patent Document 2, since the difference of the distance between the right and left arm portions arranged in the tab, and the distance between the outer side surfaces of the right and left tab attachment posts arranged in the slider body is small as mentioned above, the position of the tab is hard to be largely deviated in the slider width direction with respect to the slider body. 
     However, in this case, a positioning means of the tab with respect to the slider body utilizes the distance between the right and left arm portions in the tab, and the distance between the outer side surfaces of the right and left tab attachment posts in the slider body. In accordance with this, a size and a positional relationship in the right and left arm portions of the tab and the tab attachment post of the slider body which are directly visible from the outer portion are necessarily determined, and there has been such a defect that a design freedom and a width of design in the slider are limited. 
     The invention is made by taking the conventional problems mentioned above into consideration, and a particular object of the invention is to provide a slider for a slide fastener which prevents an outer appearance quality and a touch feeling of the slider and the slide fastener from being lowered, and protects a stop mechanism from a shock from an outer portion so as to make the stop mechanism hard to be broken down, and to provide a slider for a slide fastener which can smoothly assemble the slider by positioning a tab with respect to a slider body in a portion which is invisible from the outer portion. 
     Means for Solving the Problems 
     In order to achieve the object mentioned above, a slider for a slide fastener provided by the invention is a slider for a slide fastener having a slider body in which upper and lower blades are connected by a guide column, and first and second tab attachment posts are provided in a rising manner in an upper surface of the upper blade, and a tab in which a tab main body and an attachment shaft portion are connected by a pair of arm portions, as a basic structure, and the first and second tab attachment posts being caulked in a state in which the attachment shaft portion of the tab is inserted so as to rotatably retain the attachment shaft portion, mainly characterized in that a cover body covering at least the first and second tab attachment posts is fixed to the upper blade. 
     Particularly, in the slider for the slide fastener in accordance with the invention, it is preferable that a pawl hole is arranged between the first and second tab attachment posts of the upper blade, a stop mechanism is constructed by a locking pawl which is arranged so as to be movable into and out of an element guide path between the upper and lower blades, via the pawl hole on the basis of an operation of the tab, and the stop mechanism is covered by the cover body which is fixed to the upper blade. 
     Further, in the slider for the slide fastener in accordance with the invention, it is preferable that a movement control portion is arranged in the attachment shaft portion, the movement control portion controlling a movement of the tab in an axial direction of the attachment shaft portion with respect to the first and second tab attachment posts, and securing a gap capable of accommodating a side wall portion of the cover body, between outer side surfaces of the first and second tab attachment posts and the arm portion of the tab. 
     Particularly, it is preferable that the movement control portion protrudes in a direction which is orthogonal to an axial direction of the attachment shaft portion from the attachment shaft portion. 
     In this case, it is preferable that the movement control portion is arranged between the first and second tab attachment posts. Particularly, it is preferable that a dimension of the movement control portion in the axial direction of the attachment shaft portion is set to be equal to or more than 80% of a distance between the first and second tab attachment posts. 
     Further, in the slider for the slide fastener in accordance with the invention, the movement control portion may be arranged one by one in an outer side of the first and second tab attachment posts. 
     In the invention, it is preferable that the locking pawl is arranged in a leaf spring member which is installed to the slider body, and the attachment shaft portion of the tab has a projection portion which pushes up the leaf spring member on the basis of an operation of the tab so as to move the locking pawl out of the element guide path. 
     Further, in the invention, the locking pawl may be formed so as to protrude out of the attachment shaft portion of the tab. 
     Effect of the Invention 
     The slider for the slide fastener in accordance with the invention has the slider body in which the first and second tab attachment posts are provided in a rising manner in the upper blade, the tab in which the attachment shaft portion is arranged, and the cover body, and the attachment shaft portion of the tab is rotatably retained to the first and second tab attachment posts of the slider body. Further, the cover body covers, at least, the first and second tab attachment posts arranged in the upper blade so as to be fixed to the upper blade. 
     In the slider in accordance with the invention having the structure mentioned above, since at least a part of the first and second tab attachment posts and the attachment shaft portion of the tab is covered by the cover body, a good touch feeling can be obtained. Further, in the slider, the first and second tab attachment posts are invisible from the outer portion by the cover body, an outer appearance is improved, and it is possible to construct a slide fastener which is excellent in a quality (particularly, an outer appearance quality), by using the slider. 
     Particularly, in the slider for the slide fastener in accordance with the invention, the pawl hole is arranged between the first and second tab attachment posts of the upper blade, and the stop mechanism is constructed by the locking pawl which is arranged so as to be movable into and out of the element guide path between the upper and lower blades, via the pawl hole on the basis of the operation of the tab. Further, the stop mechanism is covered by the cover body which is fixed to the upper blade. 
     In accordance with this, since not only the first and second tab attachment posts of the slider body but also the stop mechanism of the slider is covered by the cover body, a further good touch feeling can be obtained, and it is possible to further improve the outer appearance of the slider. Further, since the stop mechanism of the slider is covered by the cover body so as to be protected, it is possible to stably protect the stop mechanism from a shock or the like even if the slider experiences a shock or the like from the outer portion, whereby it is possible to prevent a trouble of the stop mechanism in the slider. 
     In the slider for the slide fastener in accordance with the invention mentioned above, the movement control portion is arranged in the attachment shaft portion of the tab, the movement control portion controlling the movement of the tab in the axial direction of the attachment shaft portion with respect to the first and second tab attachment posts, and securing the gap capable of accommodating the side wall portion of the cover body, between the outer side surfaces of the first and second tab attachment posts and the arm portion of the tab. 
     For example, at a time of assembling the cover body in the upper blade of the slider body so as to fix, after rotatably retaining the attachment shaft portion of the tab in the first and second tab attachment posts of the slider body, the cover body interferes with the tab if the gap capable of inserting the side wall portion of the cover body is not provided between the first tab attachment post and the arm portion of the tab, and between the second tab attachment post and the arm portion of the tab, and it is impossible to assemble the cover body in the upper blade of the slider body. In accordance with this, it is necessary to set a predetermined gap between the first tab attachment post and the arm portion of the tab, and between the second tab attachment post and the arm portion of the tab. 
     However, in the case that the gap as mentioned above is provided between the first tab attachment post and the arm portion of the tab, and between the second tab attachment post and the arm portion of the tab, the position of the tab tends to be deviated in an axial direction (a slider width direction) of the attachment shaft portion of the tab with respect to the slider body, on the basis of an existence of the gap. In this case, if the position of the tab is deviated in the slider width direction, the gap between the first tab attachment post and the arm portion of the tab, or the gap between the second tab attachment post and the arm portion of the tab becomes narrow, and there is generated such a problem that the cover body interferes with the tab at a time of assembling the cover body in the upper blade of the slider body. 
     In order to dissolve the problem mentioned above, in accordance with the invention, the movement control portion as mentioned above is arranged in the attachment shaft portion of the tab. In accordance with this, the positioning of the tab in the slider width direction can be easily carried out with respect to the first and second tab attachment post, at a time of retaining the attachment shaft portion of the tab in the first and second tab attachment posts of the slider body, and it is possible to prevent the position of the tab from being deviated in the slider width direction by controlling the movement of the tab in the axial direction of the attachment shaft portion. 
     In accordance with this, when the attachment shaft portion of the tab is retained in the first and second tab attachment posts, it is possible to absolutely secure an appropriate gap which can insert the side wall portion of the cover body, between the outer side surface of the first tab attachment post and the arm portion of the tab, and between the outer side surface of the second tab attachment post and the arm portion of the tab. Accordingly, it is possible to smoothly assemble the cover body in the upper blade so as to fix without the cover body interfering with the tab, at a time of assembling the cover body in the upper blade of the slider body. 
     Further, in the slider in accordance with the invention, since the movement control portion of the tab and the first and second tab attachment posts can be concealed in the inner portion of the cover body fixed to the upper blade in such a manner as to be directly invisible from the outer portion, it is possible to enlarge a design freedom and a width of a design in the slider. 
     In the slider in accordance with the invention, the movement control portion protrudes in the direction which is orthogonal to the axial direction of the attachment shaft portion from the attachment shaft portion. Particularly, the movement control portion is arranged between the first and second tab attachment posts. In accordance with this, since the tab is securely positioned with respect to the first and second tab attachment posts, and the movement control portion comes into contact with the first tab attachment post and/or the second tab attachment post at a time when the tab is retained in the first and second tab attachment post, it is possible to securely prevent the position of the tab from being deviated in the slider width direction. Further, if the movement control portion is arranged between the first and second tab attachment posts, it is possible to securely conceal the movement control portion in the inner portion of the cover body at a time of assembling the slider. 
     In this case, the dimension of the movement control portion in the axial direction of the attachment shaft portion is set to be equal to or more than 80% of the distance between the first and second tab attachment posts, and preferably equal to or more than 85%. In accordance with this, it is possible to more securely position the tab with respect to the first and second tab attachment posts. In this case, in the invention, the dimension in the axial direction of the attachment shaft portion of the movement control portion may be smaller than the distance between the first and second tab attachment posts (that is, less than 100% of the distance between the first and second tab attachment posts), however, taking into consideration a parts dimensional accuracy of the slider body and the tab, and an assembling easiness of the tab with respect to the slider body, it is preferable to be set to be equal to or less than 95% of the distance between the first and second tab attachment posts. 
     Further, in the slider for the slide fastener in accordance with the invention, the movement control portion may be arranged one by one in the outer side of the first and second tab attachment posts. In accordance with the provision of the movement control portion as mentioned above, it is also possible to securely position the tab with respect to the first and second tab attachment posts, and it is possible to securely prevent the position of the tab from being deviated in the slider width direction with respect to the slider body, after retaining the tab in the first and second tab attachment posts. 
     In the invention, the locking pawl constructing the stop mechanism is arranged in the leaf spring member which is installed to the slider body. Further, the attachment shaft portion of the tab has the projection portion which pushes up the leaf spring member on the basis of the operation of the tab so as to move the locking pawl out of the element guide path. 
     In accordance with the slider of the invention having the structure mentioned above, it is possible to easily construct the stably functioning stop mechanism within the cover body. In accordance with this, it is possible to securely protect the stop mechanism by the cover body, and it is possible to prevent the stop mechanism from being exposed to the outer portion. 
     In this case, an angle between a protruding direction of the movement control portion and a protruding direction of the projection portion is set to be larger than 90 degree, and is preferably set such that the protruding direction of the movement control portion and the protruding direction of the projection portion are inverted to each other (such that the angle between the protruding direction of the movement control portion and the protruding direction of the projection portion comes to 180 degree). 
     For example, in the case that the caulking process is carried out in the first and second tab attachment posts of the slider body as mentioned above, and the attachment shaft portion of the tab is rotatably retained in the first and second tab attachment posts, a space portion having such a size that the movement control portion of the tab is able to enter into may be formed between the apical portions of a pair of post portions in the first tab attachment post, and between the apical portions of a pair of post portions in the second tab attachment post. 
     In this case, if the tab moves in the slider width direction at a time when the position of the space portion mentioned above formed in the first and second tab attachment posts and the position of the movement control portion of the tab overlap, on the basis of the operation of the tab, there is a risk that the movement control portion of the tab enters into the space portion mentioned above, and the tab-catches on the first or second tab attachment post so as to be non-rotatable. 
     In order to dissolve the problem mentioned above, in accordance with the invention, the angle between the protruding direction of the movement control portion and the protruding direction of the projection portion is set to be larger than 90 degree as mentioned above. In accordance with this, since the movement control portion of the tab does not lap over the position of the space portion mentioned above formed in the first and second tab attachment posts, within a rotatable range of the tab which is retained in the first and second tab attachment posts of the slider body, it is possible to prevent the tab from becoming non-rotatable. 
     On the other hand, in the invention, the locking pawl constructing the stop mechanism may be formed so as to protrude out of the attachment shaft portion of the tab. Since the stably functioning stop mechanism can be easily constructed within the cover body even in the slider mentioned above, it is possible to securely protect the stop mechanism by the cover body, and it is possible to prevent the stop mechanism from being exposed to the outer portion. 
     In this case, it is preferable that the movement control portion protrudes in a direction which is in parallel to the arm portion. Since the movement control portion is arranged in the attachment shaft portion of the tab, it is possible to securely carry out the positioning of the tab. In addition, the movement control portion can serve as a stopper stopping the rotating motion of the tab at a time of coming into contact with the upper blade of the slider body, and a limit of rotating motion of the tab can be set by the movement control portion. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded perspective view of a slider in accordance with a first embodiment of the invention. 
         FIG. 2  is a top elevational view showing a state before a leaf spring member and a cover body are installed in the slider. 
         FIG. 3  is an exploded perspective view of a slider in accordance with a second embodiment of the invention. 
         FIG. 4  is a perspective view showing a state before a leaf spring member and a cover body are installed in the slider. 
         FIG. 5  is a top elevational view showing the state before the leaf spring member and the cover body are installed in the slider. 
         FIG. 6  is a cross sectional view showing the state before the leaf spring member and the cover body are installed in the slider. 
         FIG. 7  is a top elevational view showing a state before a leaf spring member and a cover body are installed in a slider in accordance with a modified embodiment of the second embodiment. 
         FIG. 8  is an exploded perspective view of a slider in accordance with a third embodiment of the invention. 
         FIG. 9  is a perspective view of a cover body of the slider as seen from a back face side. 
         FIG. 10  is a cross sectional view showing a state in which a locking pawl of the slider goes into an element guide path. 
         FIG. 11  is a cross sectional view showing a state in which the locking pawl of the slider goes out of the element guide path. 
     
    
    
     MODE FOR CARRYING OUT THE INVENTION 
     A description will be in detail given below of a preferable mode for carrying out the invention by listing up embodiments with reference to the accompanying drawings. In this case, the invention is not limited to the embodiments described below at all, but can be variously modified as long as it has substantially the same structure as the invention, and achieves the same operation and effect. 
     First Embodiment 
       FIG. 1  is an exploded perspective view of a slider in accordance with a first embodiment, and  FIG. 2  is a top elevational view showing a state before a leaf spring member and a cover body of the slider are installed. 
     In the following description, a back and forth direction of the slider means a direction which is in parallel to a sliding direction of the slider (a length direction of the slider), a direction for sliding at a time of coupling right and left element rows in a slide fastener is set to a forward direction, and a direction for sliding at a time of separating the right and left element rows is set to a rearward direction. Further, an up and down direction of the slider means a height direction of the slider, a direction in a side in which a tab is attached to a slider body is set to an upward direction, and a direction in an opposite side is set to a downward direction. Further, a right and left direction of the slider means a width direction of the slider. 
     A slider  1  for a slide fastener in accordance with the present first embodiment has a slider body  10 , a cover body  20  which is fixed to the slider body  10 , a tab  30  which is rotatably retained to the slider body  10 , and a leaf spring member  40  which is provided in one end portion with a locking pawl  42 . 
     In the slider  1 , the slider body  10 , the cover body  20  and the tab  30  are manufactured by die cast molding or press molding a metal material such as an aluminum alloy, a zinc alloy or the like. Further, the leaf spring member  40  is formed by punching a metal piece having a predetermined shape from a continuous long metal sheet material such as a stainless steel, and applying a bending process to the obtained metal piece. 
     The slider body  10  in the slider  1  has an upper blade  11 , a lower blade  12  which is arranged in parallel so as to be away from the upper blade  11 , a guide column which connects front end portions of the upper and lower blades  11  and  12 , and flanges  14  which are arranged in right and left side edges of the upper and lower blades  11  and  12 . Shoulder ports formed while holding the guide column between them are formed in a front end of the slider body  10 , and a rear port is formed in a rear end of the slider body  10 . Further, a Y-shaped element guide path  15  communicating the right and left shoulder ports and the rear port is formed between the upper and lower blades  11  and  12 . 
     On an upper surface of the upper blade  11  in the slider body  10 , there are provided with a forward fixing post  11   a  and a rearward fixing post  11   b  to which the cover body  20  is caulked and fixed, left and right first and second tab attachment posts  16  and  17  which are arranged approximately in a center portion in a slider length direction (a back and forth direction) in the upper blade  11 , and retains an attachment shaft portion  33  mentioned below of the tab  30 , an accommodating groove  11   d  which is arranged between the first and second tab attachment posts  16  and  17 , and accommodates the leaf spring member  40 , and a pair of right and left caulking portions  11   e  which are arranged in a front end portion of the upper blade  11  and caulk and fix the leaf spring member  40 . 
     The forward fixing posts  11   a  are provided one by one in a rising manner right and left while holding the accommodating groove  11   d  between them in a front end portion of the upper blade  11 . In a front face portion of the right and left forward fixing posts  11   a , there is formed a fitting and attaching hole portion which is not illustrated and is provided for fitting and attaching a concave portion of the cover body  20  (a convex portion in an inner wall surface side) in accordance with a caulking process of the cover body  20 , at a time of fixing the cover body  20 . 
     The rearward fixing post  11   b  is provided in a rising manner in the center portion in the slider width direction. In a rear face portion of the rearward fixing post  11   b , there is formed a fitting and attaching hole portion  11   f  for fitting and attaching the concave portion of the cover body  20  in accordance with a caulking at a time of caulking and fixing the cover body  20 . Further, the right and left forward fixing posts  11   a  and the rearward fixing post  11   b  are structured such that when the cover body  20  is laid over the slider body  10  in such a manner as to cover the upper surface side of the upper blade  11 , they can come into contact with the inner surfaces of the front and rear wall portions and the right and left side wall portions of the cover body  20  so as to position the cover body  20  in the back and forth direction and the right and left direction. Further, in a rear end portion of the upper blade  11 , there is arranged a fitting concave portion  11   h  which makes a protruding portion  22  mentioned below of the cover body  20  fit into at a time of fixing the cover body  20  to the upper blade  11 . 
     The first tab attachment post  16  in the left side and the second tab attachment post  17  in the right side are provided in a rising manner symmetrically while holding the accommodating groove  11   d  between them, and respectively have front post portions  16   a  and  17   a  and rear post portions  16   b  and  17   b . The front post portions  16   a  and  17   a  and the rear post portions  16   b  and  17   b  are provided in a rising manner in such a manner that a cross sectional dimension in a back and forth direction is reduced gradually in accordance with an increase of a height (toward an upward direction), and a gap which can insert an attachment shaft portion  33  of the tab  30  is provided between the front post portions  16   a  and  17   a  and the rear post portions  16   b  and  17   b.    
     The first and second tab attachment posts  16  and  17  in left and right sides as mentioned above can retain the attachment shaft portion  33  of the tab  30  rotatably at a predetermined position, by inserting the attachment shaft portion  33  of the tab  30  into the gap between the front post portions  16   a  and  17   a  and the rear post portions  16   b  and  17   b , and thereafter pressing upper end portions of the front and rear post portions  16   a ,  16   b ,  17   a  and  17   b  in a direction in which they come close to each other so as to carry out a caulking process. 
     The accommodating groove  11   d  accommodating the leaf spring member  40  is arranged from a position at which the right and left forward fixing post  11   a  is arranged to a position which is rearward of the first and second tab attachment posts  16  and  17 , in the center portion in the slider width direction. Further, a pawl hole  11   c  which penetrates from the upper surface of the upper blade  11  to the element guide path  15  is formed in a rear end portion of the accommodating groove  11   d . Further, a front end portion of the accommodating groove  11   d  is provided with a recess  11   g  into which a hook portion  41  mentioned below of the leaf spring member  40  is inserted. 
     The cover body  20  in the present first embodiment has an upper surface portion, a front wall portion, a rear wall portion and right and left side wall portions, and is formed as a rectangular shape in a top elevational view. A distance between the inner surfaces of the right and left side wall portions in the cover body  20  is set to be the same size of a width between the outer side surfaces of the first and second tab attachment posts  16  and  17  in the slider body  10 , or be larger than the width. Further, a distance between the outer surfaces of the right and left side wall portions in the cover body  20  is set to be smaller than a distance between arm portions mentioned below of the tab. 
     A dimension from an outer surface of a front wall portion in the cover body  20  to an outer surface of a rear wall portion (that is, a dimension in a length direction of the cover body  20 ) is set to be the same size as the size in the length direction in the upper blade  11 . Further, a dimension in a height direction in the cover body  20  is set to such a dimension that the inner surface of the upper surface portion of the cover body  20  does not interfere with the forward and rearward fixing posts  11   a  and  11   b  of the slider body  10  or the first and second tab attachment posts  16  and  17  after being caulked, at a time of laying the cover body  20  over the upper blade  11 . 
     Further, an insertion hole portion  21  which inserts the attachment shaft portion  33  of the tab  30  is formed in right and left side wall portions of the cover body  20 , and a protruding portion  22  which is fitted into the fitting concave portion  11   h  provided in the upper blade  11  is provided in a suspended manner in a lower end of a rear wall portion of the cover body  20 . In the present first embodiment, since the attachment shaft portion  33  of the tab  30  is retained rotatably at the predetermined position by the first and second tab attachment posts  16  and  17  which are arranged in the slider body  10 , the attachment shaft portion  33  itself does not move in the back and forth direction and the up and down direction. In accordance with this, the insertion hole portion  21  formed in the cover body  20  can be formed small as long as the insertion hole portion  21  has such a size that can insert the attachment shaft portion  33  of the tab  30 . 
     The tab  30  in the present first embodiment has a tab main body  31  which comes to a grip portion, right and left arm portions  32  which are extended from the tab main body  31 , and the attachment shaft portion  33  which connects apical portions of the right and left arm portions  32 . A distance between the right and left arm portions  32  in the tab  30  (a distance between inner side surfaces of the right and left arm portions  32 ) is set to be larger than the distance between the outer surfaces of the right and left side wall portions in the cover body  20 , as mentioned above. 
     A projection portion  33   a  protruding toward the tab main body  31  side is arranged in a center portion in a width direction of the attachment shaft portion  33 , and a protruding direction of the projection portion  33   a  is orthogonal to an axial direction of the attachment shaft portion  33  (the width direction of the tab  30 ). 
     The leaf spring member  40  in the present first embodiment is arranged in one end portion of the leaf spring member  40 , and has a hook portion  41  which can be inserted to the recess  11   g  of the upper blade  11 , a locking pawl  42  which is arranged in another end portion of the leaf spring member  40 , and a cover portion  43  which is arranged between the hook portion  41  and the locking pawl  42  and has an inverted U-shaped vertical cross section. 
     In the case that the leaf spring member  40  is accommodated in the accommodating groove  11   d  of the slider body  10 , the hook portion  41  of the leaf spring member  40  is accommodated in the recess  11   g  of the slider body  10 , and the locking pawl  42  of the leaf spring member  40  is retained in a state in which it moves into the element guide path  15  via the pawl hole  11   c  of the slider body  10 . 
     Next, a description will be given of a procedure of assembling the slider  1  in accordance with the present first embodiment having the constructing parts as mentioned above. 
     First of all, the attachment shaft portion  33  of the tab  30  is attached to the first and second tab attachment posts  16  and  17  in the left and right sides of the slider body  10 . Specifically describing, the attachment shaft portion  33  of the tab  30  is inserted between the front and rear post portions  16   a ,  16   b ,  17   a  and  17   b  of the first and second tab attachment posts  16  and  17 , and the upper end portions of the front and rear post portions  16   a ,  16   b ,  17   a  and  17   b  are thereafter pressed in such a direction that they come close to each other so as to be caulked. In accordance with this, as shown in  FIG. 2 , the attachment shaft portion  33  of the tab  30  is retained rotatably at the predetermined position by the first and second tab attachment posts  16  and  17 . In this case, a small space portion may be formed between the upper end portions of the caulked front and rear post portions  16   a ,  16   b ,  17   a  and  17   b.    
     Subsequently, the leaf spring member  40  is accommodated in the accommodating groove  11   d  from an upper side of the slider body  10  in a state in which the attachment shaft portion  33  tilts the tab  30  retained in the first and second tab attachment posts  16  and  17  to the rear port side. At this time, the leaf spring member  40  is inserted into the accommodating groove  11   d  from the above so as to be accommodated, in such a manner that the cover portion  43  of the leaf spring member  40  overstrides the center portion of the attachment shaft portion  33  including the projection portion  33   a  of the tab  30 . 
     Since the leaf spring member  40  is accommodated in the accommodating groove  11   d  as mentioned above, the locking pawl  42  of the leaf spring member  40  goes into the element guide path  15  via the pawl hole  11   c  of the slider body  10 . Further recess  41  of the leaf spring member  40  is accommodated in the recess  11   g  of the slider body  10 . 
     One end portion of the leaf spring member  40  is fixed to the upper blade  11  by carrying out the caulking process in such a manner as to bend the right and left caulking portions  11   e  arranged in the front end portion of the upper blade  11  inward, after accommodating the leaf spring member  40  in the accommodating groove  11   d.    
     Next, the cover body  20  is laid over the upper blade  11  of the slider body  10  to which the leaf spring member  40  is fixed. At this time, the cover body  20  is laid over the upper blade  11  in such a manner as to accommodate the right and left forward fixing posts  11   a  and the rearward fixing post  11   b  arranged in the upper blade  11  within the cover body  20 , and the inner wall surface of the cover body  20  is brought into contact with the right and left forward fixing posts  11   a  and the rearward fixing post  11   b . Further, the protruding portion  22  provided in the rear wall portion of the cover body  20  is fitted into the fitting concave portion  11   h  provided in the upper blade  11 . In accordance with this, it is possible to mount the cover body  20  to the upper surface of the upper blade  11  while positioning the cover body  20 . 
     After the cover body  20  is mounted to the upper blade  11 , the portion of the cover body  20  corresponding to the fitting and attaching hole portion  11   f  formed in the forward fixing posts  11   a  and the rearward fixing post  11   b  is locally pressed from the outer side so as to be depressed into an inner portion. In accordance with this, since a convex portion is formed in the inner wall surface of the cover body  20 , and the convex portion is fitted and attached to the fitting and attaching hole portion  11   f  formed in the forward fixing posts  11   a  and the rearward fixing post  11   b , the cover body  20  is caulked and fixed by the right and left forward fixing posts  11   a  and the rearward fixing post  11   b , and the slider  1  in accordance with the present first embodiment is assembled. 
     In the slider  1  of the present first embodiment which is assembled as mentioned above, for example, in a state in which the tab  30  is tilted to the rear port side or the shoulder port side, the locking pawl  42  arranged in the leaf spring member  40  goes into the element guide path  15  via the pawl hole  11   c  of the slider body  10 . In accordance with this, the slider  1  can go on a stop mechanism of retaining the slider  1  at a position at which the slider  1  is stopped with respect to the element row of the slide fastener, in the case that it is used in the slide fastener. 
     On the other hand, in the case that the tab  30  is rotated, for example, the tab  30  is raised up in a direction which is orthogonal to the upper blade  11  of the slider body  10 , the projection portion  33   a  arranged in the attachment shaft portion  33  of the tab  30  pushes upward the cover portion of the leaf spring member  40  against an energizing force of the leaf spring member  40 . In accordance with this, since the locking pawl  42  moves away from the element guide path  15  of the slider body  10 , and the stop mechanism of the slider  1  is released, it is possible to freely slide the slider  1  along the element row. 
     In this case, since the leaf spring member  40  elastically restores, and the locking pawl  42  of the leaf spring member  40  goes into the element guide path  15  of the slider  1 , by again tilting the tab  30  to the rear port side or the shoulder port side, after releasing the stop mechanism of the slider  1 , it is possible to go on the stop mechanism of the slider  1 . 
     Further, in the slider  1  in accordance with the present first embodiment, the cover body  20  covers the first tab attachment post  16 , the second tab attachment post  17 , the forward fixing post  11   a , the rearward fixing post  11   b , the accommodating groove  11   d  and the caulking portion  11   e  which are arranged in the upper blade  11 , and the attachment shaft portion  33  and the projection portion  33   a  of the tab  30  so as to be fixed to the upper blade  11 . 
     In accordance with this, since a projection material such as the first and second tab attachment posts  16 ,  17  or the like, and an irregularity by the accommodating groove  11   d  are concealed, it is possible to smoothen the upper surface side of the slider  1 . Accordingly, a touch feeling of the upper surface side of the slider  1  is improved, and an outer appearance is improved. It is possible to obtain a slide fastener which is excellent in quality by using the slider  1 . 
     Further, the stop mechanism of the slider  1  which is constructed by the projection portion  33   a  of the tab  30  and the leaf spring member  40  is covered by the cover body  20  so as to be protected. In accordance with this, even if the slider  1  experiences a shock from the outer portion, it is possible to stably protect the stop mechanism from the shock or the like, and it is possible to effectively prevent the stop mechanism of the slider  1  from breaking down. 
     In addition, in the slider  1  in accordance with the present first embodiment, the stop mechanism of the slider  1  is constructed by the projection portion  33   a  arranged in the tab  30 , the leaf spring member  40 , the pawl hole  11   c  provided in the upper blade  11  and the like, however, the invention can be applied to a slider which is not provided with the stop mechanism, as long as the cover body is fixed to the upper blade in such a manner as to cover the first and second tab attachment posts. 
     Second Embodiment 
       FIG. 3  is an exploded perspective view of a slider in accordance with a second embodiment. Further,  FIG. 4 ,  FIG. 5  and  FIG. 6  are respectively a perspective view, a top elevational view and a cross sectional view showing a state in which a leaf spring member and a cover body of the slider are installed. 
     A slider  2  for a slide fastener in accordance with the present second embodiment employs a tab  50  in which a movement control portion  53   b  is arranged in an attachment shaft portion  53 , in place of the tab  30  in the slider  1  in accordance with the first embodiment mentioned above, and the other structures except the tab  50  are substantially the same as the slider  1  of the first embodiment mentioned above. Accordingly, in the slider  2  in accordance with the present second embodiment, the parts and members having the same structures as the slider  1  of the first embodiment mentioned above are indicated by using the same reference numerals, whereby a description of these parts and members will be omitted. 
     The slider  2  for the slide fastener in accordance with the present second embodiment has the slider body  10 , the cover body  20  which is fixed to the slider body  10 , the tab  50  which is rotatably retained in the slider body  10 , and the leaf spring member  40  which is provided in its one end portion with the locking pawl  42 . 
     The tab  50  in the present second embodiment has a tab main body  51  which comes to a grip portion, right and left arm portions  52  which are extended from the tab main body  51 , and an attachment shaft portion  53  which connects apical portions of the right and left arm portions  52 . A distance between the right and left arm portions  52  in the tab  50  (a distance between inner side surfaces of the right and left arm portions  52 ) is set to be larger than the distance between the outer surfaces of the right and left side wall portions in the cover body  20 . 
     Further, in a center portion in an axial direction in the attachment shaft portion  53 , there are arranged the projection portion  53   a  which protrudes toward the tab main body  51  side, and a movement control portion  53   b  which protrudes in an opposite direction to the projection portion  53   a , and a protruding direction of the projection portion  53   a  and a protruding direction of the movement control portion  53   b  are orthogonal with respect to an axial direction of the attachment shaft portion  53 . 
     The movement control portion  53   b  is arranged in such a manner as to be positioned between the first and second tab attachment posts  16  and  17  at a time when the attachment shaft portion  53  of the tab  50  is retained in the first and second tab attachment posts  16  and  17 . 
     In this case, a dimension of the movement control portion  53   b  in the axial direction of the attachment shaft portion  53  is set to be equal to or more than 80% of the distance between the inner surfaces of the first and second tab attachment posts  16  and  17 , preferably equal to or more than 85%. Since the dimension in a width direction of the movement control portion  53   b  is set as mentioned above, the movement control portion  53   b  is inserted between the first and second tab attachment posts  16  and  17  at a time when the attachment shaft portion  53  of the tab  50  is retained in the first and second tab attachment posts  16  and  17 , whereby it is possible to carry out a positioning (an alignment) of the tab  50  with respect to the first and second tab attachment posts  16  and  17 . 
     Further, since the movement control portion  53   b  controls a motion in the width direction of the tab  50  (the axial direction of the attachment shaft portion  53 ) between the first and second tab attachment posts  16  and  17 , it is possible to secure a gap which can accommodate the right and left side wall portions of the cover body  40 , between the outer side surface of the first tab attachment post  16  and the arm portion  52  of the tab  50 , and between the outer side surface of the second tab attachment post  17  and the arm portion  52  of the tab  50 . 
     Further, in the present second embodiment, a dimension of the movement control portion  53  in the axial direction of the attachment shaft portion  53  is set to be smaller than the distance between the inner surfaces of the first and second tab attachment posts  16  and  17 , preferably equal to or less than 95% of the distance between the inner surfaces of the first and second tab attachment posts  16  and  17 . In accordance with this, it is possible to prevent a matter that the movement control portion  53   b  of the tab  50  can not be inserted between the first and second tab attachment posts  16  and  17 , at a time of inserting the attachment shaft portion  53  of the tab  50  to the first and second tab attachment posts  16  and  17  so as to be retained. 
     In this case, the movement control portion  53   b  of the present second embodiment protrudes to the opposite direction to the protruding direction of the projection portion  53   a  as mentioned above, however, in the invention, the protruding direction of the movement control portion  53   b  can be optionally set, as long as the movement control portion  53   b  is arranged so as to be orthogonal to the axial direction of the attachment shaft portion  53 . 
     In this case, in the invention, it is preferable that the movement control portion  53   b  is arranged in such a manner that an angle between the protruding direction of the movement control portion  53   b  and the protruding direction of the projection portion  53   a  becomes larger than 90 degree. 
     For example, in the first and second tab attachment posts  16  and  17  which are caulked so as to retain the attachment shaft portion  53  of the tab  50 , the small space portion may be formed between the upper end portions of the front and rear post portions  16   a ,  16   b ,  17   a  and  17   b , as described in the first embodiment mentioned above. 
     In this case, if the space portion formed in the first and second tab attachment posts  16  and  17  has such a size that the movement control portion  53   b  of the tab  50  can enter into, there can be thought that the tab  50  moves in a tape width direction at a time when a position of the space portion mentioned above formed in the first and second tab attachment posts  16  and  17  and the position of the movement control portion  53   b  of the tab  50  overlap in a side view of the slider  2 , for example, on the basis of an operation of the tab  50 , and the movement control portion  53   b  of the tab  50  enters into the space portion mentioned above. If the movement control portion  53   b  of the tab  50  enters into the space portion mentioned above, the movement control portion  53   b  catches on the first or second tab attachment post  16  or  17 , and there is a risk that such a problem that the tab  50  can not rotate is generated. 
     However, in the case that the movement control portion  53   b  is arranged in such a manner that the angle between the protruding direction of the movement control portion  53   b  and the protruding direction of the projection portion  53   a  becomes larger than 90 degree as the present second embodiment (particularly, in the case that the angle between the protruding direction of the movement control portion  53   b  and the protruding direction of the projection portion  53   a  comes to 180 degree), the movement control portion  53  of the tab  50  does not overlap the position of the space portion mentioned above formed in the first and second tab attachment posts  16  and  17  in the side view of the slider  2 , within the rotatable range of tab  50  which is retained in the first and second tab attachment posts  16  and  17 . Accordingly, it is possible to prevent the tab  50  from becoming non-rotatable. 
     In this case, in the present second embodiment, since the movement control portion  53   b  is arranged in the attachment shaft portion  53  of the tab  50 , it is desirable that a concave portion which makes a groove depth deep and is not illustrated is provided in the accommodating groove  11   d  of the slider body  10 , in such a manner as to prevent the movement control portion  53   b  from interfering with the slider body  10  at a time of the rotating motion of the tab  50 . 
     Next, a description will be given of a procedure for assembling the slider  2  in accordance with the present second embodiment. 
     First of all, the attachment shaft portion  33  of the tab  30  is attached to the first and second tab attachment posts  16  and  17  in the left and right of the slider body  10 . Specifically describing, the attachment shaft portion  33  of the tab  30  is inserted between the front and rear post portions  16   a ,  16   b ,  17   a  and  17   b  of the first and second tab attachment posts  16  and  17 . At this time, in the tab  50  in accordance with the present second embodiment, since the movement control portion  53   b  is arranged in the attachment shaft portion  53  as mentioned above, it is possible to stably carry out the positioning of the tab  50  in the slider width direction with respect to the first and second tab attachment posts  16  and  17 , by inserting the movement control portion  53   b  between the first and second tab attachment posts  16  and  17 . 
     Subsequently, the upper end portions of the front and rear post portions  16   a ,  16   b ,  17   a  and  17   b  of the first and second tab attachment posts  16  and  17  are pressed in such a direction that they come close to each other so as to be caulked. In accordance with this, as shown in  FIG. 4  to  FIG. 6 , the attachment shaft portion  53  of the tab  50  is rotatably retained by the first and second tab attachment posts  16  and  17  in the left and right sides. 
     Further, since the attachment shaft portion  53  of the tab  50  is retained by the first and second tab attachment posts  16  and  17  as mentioned above, whereby the movement control portion  53   b  controls the movement in the slider width direction of the tab  50  (the axial direction of the attachment shaft portion  53 ) between the first and second tab attachment posts  16  and  17 , the gap which can accommodate the right and left side wall portions of the cover body  40  can be stably secured between the outer side surface of the first tab attachment post  16  and the arm portion  52  of the tab  50 , and between the outer side surface of the second tab attachment post  17  and the arm portion  52  of the tab  50 . 
     Next, one end portion of the leaf spring member  40  is fixed to the upper blade  11 , by accommodating the leaf spring member  40  in the accommodating groove  11   d  from the above of the slider body  10 , in a state in which the tab  50  is tilted to the rear port side, and carrying out the caulking process in such a manner as to inflect the right and left caulking portions  11   e  arranged in the front end portion of the upper blade  11  toward the inner side. 
     After the leaf spring member  40  is fixed to the slider body  10 , the cover body  20  is laid over the upper blade  11  of the slider body  10 . At this time, the cover body  20  is laid over the upper blade  11  in such a manner as to accommodate the forward fixing post  11   a  and the rearward fixing post  11   b  in the left and right which are arranged in the upper blade  11  into the cover body  20 , and the inner surfaces of the front wall portion and the rear wall portion of the cover body  20  are brought into contact with the forward fixing post  11   a  and the rearward fixing post  11   b  in the left and right sides. Further, the protruding portion  22  provided in the rear wall portion of the cover body  20  is fitted into the fitting concave portion  11   h  provided in the upper blade  11 . In accordance with this, it is possible to mount the cover body  20  on the upper surface of the upper blade  11  while positioning the cover body  20 . 
     Particularly, in the present second embodiment, since the movement in the slider width direction of the tab  50  is controlled by the movement control portion  53   b , a predetermined gap is formed between the outer side surface of the first tab attachment post  16  and the arm portion  52  of the tab  50 , and between the outer side surface of the second tab attachment post  17  and the arm portion  52  of the tab  50 . In accordance with this, the arm portion  52  of the tab  50  and the cover body  20  do not interfere at a time of laying the cover body  20  over the upper blade  11 , and it is possible to smoothly and securely mount the cover body  20  to the upper surface of the upper blade  11 . 
     Further, after the cover body  20  is mounted to the upper blade  11 , the portion of the cover body  20  corresponding to the fitting and attaching hole portion  11   f  formed in the forward fixing post  11   a  and the rearward fixing post  11   b  is depressed to the inner portion by being locally pressed from the outer side. In accordance with this, the cover body  20  is caulked and fixed to the right and left forward fixing posts  11   a  and the rearward fixing post  11   b , and the slider  1  in accordance with the present second embodiment is assembled. 
     The slider  2  in accordance with the present second embodiment assembled as mentioned above can go on the stop mechanism in a state in which the tab  50  is tilted to the rear port side or the shoulder port side, in the same manner as the first embodiment mentioned above. On the other hand, since the stop mechanism of the slider  2  is released at a time of raising the tab  50  in a direction which is orthogonal to the upper blade  11  of the slider body  10 , it is possible to freely slide the slider  2  along the element row of the slide fastener. 
     Further, in the slider  2  in accordance with the present second embodiment, since the first and second tab attachment posts  16  and  17  in the upper blade  11  and the accommodating groove  11   d  are concealed by the cover body  20 , a touch feeling of the slider  2  is improved, and an outer appearance is improved, so that it is possible to obtain a slider fastener which is excellent in quality by using the slider  2 . Further, since the stop mechanism of the slider  2  is covered by the cover body  20  so as to be protected, it is possible to stably protect the stop mechanism from the shock or the like even if the slider  2  experiences the shock or the like from the outer portion, and it is possible to effectively prevent a trouble of the stop mechanism. 
     Further, in the present second embodiment, the description is given of the case that the tab  50  has one movement control portion  53   b , and the movement control portion  53   b  is arranged in the center portion in the axial direction in the attachment shaft portion  53  in such a manner as to be held between the first and second tab attachment posts  16  and  17  of the slider body  10 . 
     However, the mode of the movement control portion in the invention is not limited to this, but the mode of the movement control portion can be changed as long as the movement control portion can carry out the positioning of the tab at a time of attaching the tab to the first and second tab attachment posts, and can control the movement in the width direction of the tab which is retained in the first and second tab attachment posts. 
     For example, two movement control portions may be arranged in the center portion in the axial direction in the attachment shaft portion of the tab, in such a manner as to be held between the first and second tab attachment posts  16  and  17  of the slider body  10 . 
     Further, as a modified embodiment of the second embodiment is shown in  FIG. 7 , two movement control portions may be arranged in an attachment shaft portion of a tab in such a manner as to be positioned in the outer side of the first and second tab attachment posts  16  and  17 , at a time when the attachment shaft portion  63  of the tab  60  is retained in the first and second tab attachment posts  16  and  17 . 
     Specifically describing the tab  60  in accordance with the modified embodiment, the tab  60  has a tab main body  61  which comes to a grip portion, right and left arm portions  62  which are extended from the tab main body  61 , and an attachment shaft portion  63  which connects apical portions of the right and left arm portions  62 . Further, a projection portion  63   a  protruding toward the tab main body  61  side is arranged in a center portion in an axial direction in the attachment shaft portion  63 . Further, movement control portions  63   b  protruding in parallel to the arm portion  62  toward the tab main body  61  side are arranged one by one at a part of the attachment shaft portion  63  which is spaced at a predetermined distance right and left from the projection portion  63   a.    
     In this case, the projection portion  63   a  and two movement control portions  63   b  are arranged in parallel. In accordance with this, a rotating motion range of the tab  60  is set at a time when the attachment shaft portion  63  of the tab  60  is retained to the first and second tab attachment posts  16  and  17  of the slider body  10 . In other words, in the case that the tab  60  is tilted to the slider rear port side and in the case that the tab  60  is tilted to the slider shoulder port side, a position of the tab  60  at a time when the movement control portion  63   b  comes into contact with the upper blade  11  comes to a rotating motion limit position in the rear port side of the slider of the tab  60 . In this case, the rotating motion of the tab  60  is not prevented by the movement control portion  63  if within the rotating motion range of the tab  60 , and it is possible to freely rotate the tab  60 . 
     Further, two movement control portions  63   b  are arranged in such a manner as to be positioned in the outer side of the first and second tab attachment posts  16  and  17  at a time when the attachment shaft portion  63  of the tab  60  is retained to the first and second tab attachment posts  16  and  17 . 
     In this case, a distance between inner surfaces in two movement control portions  63   b  is set to be the same distance as the distance between the outer side surfaces of the first and second tab attachment posts  16  and  17 , or be slightly larger than the distance between the outer side surfaces of the first and second tab attachment posts  16  and  17 . Further, a distance between outer side surfaces in two movement control portions  63   b  is set to be smaller than the distance between the inner surfaces of the right and left side wall portions in the cover body  20 . 
     Even in the tab  60  in accordance with the modified embodiment, in the same manner as the tab  50  in accordance with the second embodiment mentioned above, it is possible to stably carry out the positioning of the tab  50  with respect to the first and second tab attachment posts  16  and  17  by two movement control portions  63   b , at a time when the attachment shaft portion  63  of the tab  60  is retained to the first and second tab attachment posts  16  and  17 . 
     Further, when the attachment shaft portion  63  of the tab  60  is retained to the first and second tab attachment posts  16  and  17 , two movement control portions  63   b  control the movement in the slider width direction of the tab  60  (the axial direction of the attachment shaft portion  63 ) between the first and second tab attachment posts  16  and  17 . In accordance with this, it is possible to prevent the arm portion  62  of the tab  60  and the cover body  20  from interfering at a time of thereafter laying the cover body  20  over the upper blade  11 , whereby it is possible to smoothly and securely mount the cover body  20  to the upper surface of the upper blade  11  so as to fix. 
     Further, as the other mode of the movement control portion in the invention, for example, the projection portion arranged in the attachment shaft portion of the tab may be enlarged in the width direction (the axial direction of the attachment shaft portion), and the projection portion may be utilized as the movement control portion. 
     Further, for example, a diameter of the attachment shaft portion of the tab may be made larger than the distance between the front and rear post portions in the first and second tab attachment posts, and only a diameter of the portion of the attachment shaft portion which is retained to the first and second tab attachment posts may be aligned with the distance between the front and rear post portions. 
     It is possible to stably carry out the positioning of the tab with respect to the first and second tab attachment posts, by structuring the movement control portion as mentioned above, and it is possible to control the movement in the width direction of the tab, at a time when the attachment shaft portion of the tab is retained to the first and second tab attachment posts. 
     Third Embodiment 
       FIG. 8  is an exploded perspective view of a slider in accordance with a third embodiment. Further,  FIG. 9  is a perspective view of a cover body of the slider as seen from a back face side. 
     A slider  3  for the slide fastener in accordance with the present third embodiment has a slider body  70 , a cover body  80  which is fixed to the slider body  70 , and a tab  90  which is rotatably retained to the slider body  70 . 
     The slider body  70  in the slider  3  has an upper blade  71 , a lower blade  72  which is arranged in parallel so as to be spaced from the upper blade  71 , a guide column  73  which connects front end portions of the upper and lower blades  71  and  72 , and flanges  74  which are arranged in right and left side edges of the upper and lower blades  71  and  72 . Right and left shoulder ports formed while holding the guide column  73  between them are formed in a front end of the slider body  70 , and a rear port is formed in a rear end of the slider body  70 . Further, a Y-shaped element guide path  75  communicating the right and left shoulder ports and the rear port is formed between the upper and lower blades  71  and  72 . 
     The upper blade  71  in the slider body  70  has a rectangular shape in a top elevational view. Further, an upper surface of the upper blade  71  has a forward fixing post  71   a  and a rearward fixing post  71   b  to which a cover body  80  is caulked and fixed, left and right first and second tab attachment posts  76  and  77  which rotatably retain an attachment shaft portion  93  of the tab  90 , a pawl hole  71   c  which is arranged between the first and second tab attachment posts  76  and  77 , and positioning convex portions  71   e  each of which is provided in a concave manner in the vicinity of each of four corner portions of the upper blade  71 . 
     The forward and rearward fixing posts  71   a  and  71   b  are arranged in a front end portion and a rear end portion of the upper blade  71 , and are provided in a rising manner in a center portion in a slider width direction. Further, in a front face portion of the forward fixing post  71   a  and a rear face portion of the rearward fixing post  71   b , there is formed a fitting and attaching hole portion  71   f  for fitting and attaching a depressed portion of the cover body  80  by caulking (a convex portion in an inner wall surface side), at a time of caulking and fixing the cover body  80 . 
     The first tab attachment post  76  in the left side and the second tab attachment post  77  in the right side are arranged while holding the pawl hole  71   c  between them, and respectively have front post portions  76   a  and  77   a  and rear post portions  76   b  and  77   b . Further, the front post portions  76   a  and  77   a  and the rear post portions  76   b  and  77   b  are provided in a rising manner in such a manner that a cross sectional dimension in a back and forth direction is gradually reduced in accordance with an increase of the height, and a gap which can insert the attachment shaft portion  93  of the tab  90  is provided between the front post portions  76   a  and  77   a  and the rear post portions  76   b  and  77   b.    
     The pawl hole  71   c  arranged between the first and second tab attachment posts  76  and  77  is formed so as to pass through the element guide path  75  from an upper surface of the upper blade  71 . 
     Four positioning convex portions  71   e  arranged in the upper blade  71  are structured such as to come into contact with inner surfaces of front and rear wall portions of the cover body  80  and inner surface of right and left side-wall portions at a time when the cover body  80  is laid over the slider body  70  in such a manner as to cover the upper surface side of the upper blade  71 , whereby it is possible to position the cover body  80  in a back and forth direction and a right and left direction. 
     The cover body  80  in the present third embodiment is formed in such a manner as to have a rectangular shape having the same dimension as the upper blade  71  at a time of viewing from the upper surface side. Further, a dimension in a height direction in the cover body  80  is set in such a manner that when the cover body  80  is laid over the upper blade  71 , the inner surface of the upper surface portion in the cover body  80  does not interfere with the forward and rearward fixing posts  71   a  and  71   b  of the slider body  70  and the caulked first and second tab attachment posts  76  and  77 . 
     In this case, a concave portion  83  is formed in the inner surface of the upper surface portion of the cover body  80 , as shown in  FIG. 9 . The concave portion  83  is arranged so as to correspond to a position of a movement control portion  93   b  mentioned below arranged in the tab  90 , at a time when the cover body  80  is laid over the upper blade  71 . Since the concave portion  83  is formed, it is possible to prevent the movement control portion  93   b  of the tab  90  from interfering with the cover body  80 , even if the tab  90  retained to the slider body  70  rotates. 
     Further, an insertion hole portion  81  which inserts the attachment shaft portion  93  of the tab  90  is formed in right and left side wall portions in the cover body  80 . In the present third embodiment, since the attachment shaft portion  93  of the tab  90  is rotatably retained to the first and second tab attachment posts  76  and  77  in the left and right arranged in the slider body  70 , in the same manner as the first embodiment mentioned above, it is possible to form the insertion hole portion  81  small. 
     The tab  90  in the present third embodiment has a tab main body  91  which comes to a grip portion, right and left arm portions  92  which are extended from the tab main body  91 , and an attachment shaft portion  93  which connects apical portions of the right and left arm portions  92 . Further, the attachment shaft portion  93  has a circular cross section, and in a center portion in an axial direction in the attachment shaft portion  93 , there are arranged a locking pawl  93   a  which is provided so as to protrude in a direction which is orthogonal to the tab main body  91 , and a movement control portion  93   b  which protrudes in parallel to the tab main body  91  and in parallel to the arm portion  92  from the attachment shaft portion  93  toward the tab main body  91 . 
     Further, a rotating motion controlling projection  93   c  which is extended in parallel to the tab main body  91  and from the attachment shaft portion  93  toward the tab main body  91  is arranged in both right and left sides of the locking pawl  93   a  and the movement control portion  93   b . In this case, a protruding direction of the locking pawl  93   a , a protruding direction of the movement control portion  93   b , and an extending direction of the rotating motion controlling projection  93   c  are orthogonal to an axial direction of the attachment shaft portion  93 . 
     In the tab  90  in accordance with the present third embodiment, since the movement control portion  93   b  and the rotating motion controlling projection  93   c  are arranged in the attachment shaft portion  93  as mentioned above, a rotating motion range of the tab  90  is set. In other words, in the case that the tab  90  is tilted to the slider rear port side, a position of the tab  90  at a time when the rotating motion controlling projection  93   c  comes into contact with the upper blade  71  comes to a rotating motion limit position in a slider rear end side of the tab  90 . 
     Further, in the case that the tab  90  is tilted to the slider shoulder port side, a position of the tab  90  at a time when the movement control portion  93   b  and the rotating motion controlling projection  93   c  come into contact with the upper blade  71  comes to a rotating motion limit position in a slider front end side of the tab  90 . In this case, the rotating motion of the tab  90  is not prevented by the movement control portion  93   b  and the rotating motion controlling projection  93   c  within the rotating motion range of the tab  90 , and it is possible to freely rotate the tab  90 . 
     The movement control portion  93   b  in the present third embodiment is arranged in such a manner as to be positioned between the first and second tab attachment posts  76  and  77  at a time when the attachment shaft portion  93  of the tab  90  is retained to the first and second tab attachment posts  76  and  77 . 
     Since the movement control portion  93   b  mentioned above is arranged in the attachment shaft portion  93 , the movement control portion  93   b  is inserted between the first and second tab attaching posts  76  and  77  at a time when the attachment shaft portion  93  of the tab  90  is retained to the first and second tab attachment posts  76  and  77 , whereby it is possible to carry out the positioning of the tab  90  with respect to the first and second tab attachment posts  76  and  77 . 
     Further, since the movement control portion  93   b  is controlled the movement in the width direction of the tab  90  (the axial direction of the attachment shaft portion  93 ) between the first and second tab attachment posts  76  and  77 , it is possible to prevent the arm portion  92  of the tab  90  and the cover body  80  from interfering at a time of thereafter laying the cover body  80  over the upper blade  71 , and it is possible to smoothly mount the cover body  80  to the upper surface of the upper blade  71  so as to fix. 
     Further, in this case, since a distance between the inner surfaces in the right and left rotating motion controlling projections  93   c  is set to the same distance as the distance between the outer side surfaces of the first and second tab attachment posts  76  and  77 , or to be slightly larger than the distance between the outer side surfaces of the first and second tab attachment posts  76  and  77 , the right and left rotating motion controlling projections  93   c  can be utilized as the movement control portion. 
     In accordance with this, it is possible to more stably carry out the positioning of the tab  50  at a time of retaining the attachment shaft portion  93  of the tab  90  to the first and second tab attachment posts  76  and  77 , and after the attachment shaft portion  63  of the tab  60  is retained, it is possible to more securely control the movement in the slider width direction of the tab  60 . 
     Next, a description will be given of a procedure of assembling the slider  3  in accordance with the present third embodiment. 
     First of all, the attachment shaft portion  93  of the tab  90  is attached to the first and second tab attachment posts  76  and  77  in the left and right sides of the slider body  70 . Specifically describing, the attachment shaft portion  93  of the tab  90  is inserted between the front and rear post portions  76   a ,  76   b ,  77   a  and  77   b  of the first and second tab attachment posts  76  and  77 . 
     At this time, in the tab  90  in accordance with the present third embodiment, since the movement control portion  93   b  is arranged in the attachment shaft portion  93  as mentioned above, it is possible to stably carry out the positioning of the tab  50  in the slider width direction with respect to the first and second tab attachment posts  76  and  77 , by inserting the movement control portion  93   b  between the first and second tab attachment posts  76  and  77 . 
     Subsequently, the upper end portions of the front and rear post portions  76   a ,  76   b ,  77   a  and  77   b  of the first and second tab attachment posts  76  and  77  are pressed in a direction in which they come close to each other so as to be caulked. In accordance with this, the attachment shaft portion  93  of the tab  90  is rotatably retained to the first and second tab attachment posts  76  and  77  in the left and right sides. At this time, the attachment shaft portion  93  of the tab  90  is retained to the first and second tab attachment posts  76  and  77  in the portion between the locking pawl  93   a  and the movement control portion  93   b , and the left and right rotating motion controlling projection  93   c.    
     Further, since the attachment shaft portion  93  of the tab  90  is retained by the first and second tab attachment posts  76  and  77 , the movement control portion  93   b  and the rotating motion controlling projection  93   c  can control the movement in the width direction of the tab  90  between the first and second tab attachment posts  76  and  77 . Further, at this time, the locking pawl  93   a  of the tab  90  is inserted to the pawl hole  71   c  of the upper blade  71 , or is arranged at a position capable of being inserted to the pawl hole  71   c.    
     Next, the cover body  80  is laid over the upper blade  71  of the slider body  70  in a state in which the tab  90  is tilted to the rear port side. In the case that the tab  90  is retained to the tab attachment post  76 , the right and left rotating motion controlling projections  93   c  arranged in the attachment shaft portion  93  come into contact with the upper blade  71 , whereby a rotating motion is limited. In accordance with this, a state in which the rotating motion controlling projection  93   c  of the tab  90  comes into contact with the upper blade  71  comes to a state in which the tab  90  is tilted to the rear end side of the slider to the maximum (a state of a rotating motion limit position). 
     At this time, the cover body  80  is laid over the upper blade  71  in such a manner as to accommodate the forward and rearward fixing posts  71   a  and  71   b  and four positioning convex portions  71   e  which are arranged in the upper blade  71  within the cover body  80 , and the front and rear wall portions and the right and left side wall portions of the cover body  20  are brought into contact with four positioning convex portions  71   e . In accordance with this, it is possible to mount the cover body  80  to the upper surface of the upper blade  71  while positioning the cover body  80 . 
     Particularly, in the present third embodiment, since the movement in the width direction of the tab  90  is controlled by the movement control portion  93   b  and the rotating motion controlling projection  93   c , a predetermined gap is formed between the outer side surface of the first tab attachment post  76  and the arm portion  92  of the tab  90  (particularly between the outer side surface of the rotating motion controlling projection  93   c  in the left side and the arm portion  92  of the tab  90 ), and between the outer side surface of the second tab attachment post  77  and the arm portion  92  of the tab  90  (particularly between the outer side surface of the rotating motion controlling projection  93   c  in the right side and the arm portion  92  of the tab  90 ). In accordance with this, it is possible to prevent the arm portion  92  of the tab  90  and the cover body  80  from interfering at a time of laying the cover body  80  over the upper blade  71 , and it is possible to smoothly and securely mount the cover body  80  to the upper surface of the upper blade  71 . 
     After the cover body  80  is mounted to the upper blade  71 , the portion of the cover body  80  which corresponds to the fitting and attaching hole portions  71   f  formed in the forward fixing post  71   a  and the rearward fixing post  71   b  is locally pressed from the outer side so as to be depressed to the inner portion. In accordance with this, the cover body  80  is caulked and fixed to the forward fixing post  71   a  and the rearward fixing post  71   b , and the slider  3  in accordance with the present third embodiment can be assembled. 
     In the slider  3  in accordance with the present third embodiment obtained as mentioned above, in the case of a state in which the tab  90  is tilted to the rear port side, for example, as shown in  FIG. 10  (a state of rotating to the rotating motion limit position in the rear end side), the locking pawl  93   a  formed so as to protrude out of the attachment shaft portion  93  of the tab  90  goes into the element guide path  75  of the slider body  70 . In accordance with this, the slider  3  can go on the stop mechanism. 
     On the other hand, in the case that the tab  90  is rotated, and the tab  90  is raised in a direction which is orthogonal to the upper blade  71  of the slider body  70 , for example, as shown in  FIG. 11 , the locking pawl  93   a  moves out of the element guide path  75  of the slider body  70  in accordance with the rotating motion of the tab  90 . Accordingly, the stop mechanism of the slider  3  is released, and it is possible to freely slide the slider  3  along the element row of the slide fastener. 
     Further, in the slider  3  in accordance with the present third embodiment, since the cover body  80  has the rectangular shape having the same dimension as the upper blade  71  in the top elevational view as mentioned above, and the cover body  80  covers a whole of the upper surface side of the upper blade  71 . In accordance with this, it is possible to smoothen the upper surface of the slider  3  in a wide range. 
     Further, each of the front and rear, right and left surfaces portions in the cover body  80  can be arranged on the same plane as each of the surface portions of the upper blade  71 . In accordance with this, a step is not formed between the upper blade  71  and the cover body  80 , in each of the front and rear, right and left surface portions in the slider  3 , and it is possible to smoothen the side surface portions of the upper blade  71  and the cover body  80 . 
     Accordingly, the slider  3  in accordance with the present third embodiment can obtain a good touch feeling, and has a good outer appearance. Further, even if the slider  3  is used in the products such as the clothes, the bags or the like, it is possible to prevent the slider  3  from catching on the other articles. Further, since the stop mechanism of the slider  3  is covered by the cover body  80  so as to be protected, it is possible to stably protect the stop mechanism from the shock or the like even if the slider  3  experiences the shock or the like from the outer portion, and it is possible to effectively prevent the trouble of the stop mechanism. 
     DESCRIPTION OF REFERENCE NUMERALS 
     
         
           1  Slider 
           2  Slider 
           3  Slider 
           10  Slider body 
           11  Upper blade 
           11   a  Forward fixing post 
           11   b  Rearward fixing post 
           11   c  Pawl hole 
           11   d  Accommodating groove 
           11   e  Caulking portion 
           11   f  Fitting and attaching hole portion 
           11   g  Recess 
           11   h  Fitting concave portion 
           12  Lower blade 
           14  Flange 
           15  Element guide path 
           16  First tab attachment post 
           16   a  Front post portion 
           16   b  Rear post portion 
           17  Second tab attachment post 
           17   a  Front post portion 
           17   b  Rear post portion 
           20  Cover body 
           21  Insertion hole portion 
           22  Protruding portion 
           30  Tab 
           31  Tab main body 
           32  Arm portion 
           33  Attachment shaft portion 
           33   a  Projection portion 
           40  Leaf spring member 
           41  Hook portion 
           42  Locking pawl 
           43  Cover portion 
           50  Tab 
           51  Tab main body 
           52  Arm portion 
           53  Attachment shaft portion 
           53   a  Projection portion 
           53   b  Movement control portion 
           60  Tab 
           61  Tab main body 
           62  Arm portion 
           63  Attachment shaft portion 
           63   a  Projection portion 
           63   b  Movement control portion 
           70  Slider body 
           71  Upper blade 
           71   a  Forward fixing post 
           71   b  Rearward fixing post 
           71   c  Pawl hole 
           71   e  Positioning convex portion 
           71   f  Fitting and attaching hole portion 
           72  Lower blade 
           73  Guide column 
           74  Flange 
           75  Element guide path 
           76  First tab attachment post 
           76   a  Front post portion 
           76   b  Rear post portion 
           77  Second tab attachment post 
           77   a  Front post portion 
           77   b  Rear post portion 
           80  Cover body 
           81  Insertion hole portion 
           83  Concave portion 
           90  Tab 
           91  Tab main body 
           92  Arm portion 
           93  Attachment shaft portion 
           93   a  Locking pawl 
           93   b  Movement control portion 
           93   c  Rotating motion controlling projection