Abstract:
A pull attachment portion is provided on a slider body integrally and a pull connecting ring has attachment plates integrally. A slit is formed in a center of the pull connecting ring and the attachment plates and provided with engaging portions on both sides of the slit, and free end portions of the engaging portions are protruded from the attachment plates. A through hole is provided in a face of an accommodating portion provided in an end of a pull main body for accommodating the attachment plate so as to form a holding portion. After deforming the attachment plates elastically in vertical directions through the slit and passing one of them through the pull attachment portion, the attachment plates are accommodated in the accommodating portion and fixed therein. Replacement of the pull is carried out by pressing the engaging portions through the through hole and removing them.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a pull of a slider for a slide fastener and more particularly to a pull of a slider for a slider, in which the pull is post-installed such that the pull may be attached to or removed from the slider body. 
     2. Description of the Related Art 
     Conventionally, there have been pulls having beautiful ornament or special mark or character, and these pulls have been attached to a slider body so as to meet customer&#39;s demand. For example, there is prepared a slider having a gap which allows a pull to be inserted between its slider body and pull attachment portion and then, a pull specified by a customer demands is inserted through the gap and attached to the slider body. Then, the gap is sealed by deforming the pull attachment portion plastically. Because the pull attachment portion is of cantilever type in this kind of the slider, if an excessive force is applied to the pull, the pull attachment portion is expanded and deformed so that the pull slips out. 
     To solve the above problem, it is preferable to form the pull attachment portion and the body integrally without providing any gap between them. Thus, a slider which allows the pull to be post-installed to the slider body  1 ″ having no gap between the pull attachment portion  3 ″ and the body  1 ″, as shown in FIG. 8, is disclosed in Japanese Utility Model Application Laid-Open No. 64-43707. 
     In the slider for the slide fastener shown in FIG. 8 described above, the pull is attached to the slider body  1 ″ using a damper  4 ″. This damper  4 ″ is formed of elastic material and the damper  4 ″ has a slit  7 ″, with which the ring-like attachment portion  5 ″ of the pull may be inserted in the pull attachment portion  3 ″ of the slider body  1 ″. After the damper  4 ″ is inserted into the pull attachment portion  3 ″ by deforming the damper  4 ″ elastically to expand a gap of the slit  7 ″, the ring-like attachment portion  5 ″ of the pull is installed by expanding the gap of the slit  7 ″ and then, when the slit  7 ″ is restored to its original state elastically, connecting of the slider body  1 ″ and the pull is achieved. According to the slider having the above-mentioned configuration, when the pull is pulled or twisted, the damper  4 ″ is deformed easily, so that the slit  7 ″ is expanded and then the pull may sometimes slip out of the damper  4 ″. 
     SUMMARY OF THE INVENTION 
     The invention has been achieved in consideration of the above-described problems and the point of the invention is that a pull is comprised of a pull main body and a connecting body, which are separate. After the connecting body is attached to a pull attachment portion of a slider body, the pull may be attached to the pull attachment portion by post-installation with accommodating and fixing the connecting body into the pull main body. 
     Thus, a main object of the invention is to provide a pull of a slider for a slide fastener in which the pull attachment portion of the slider is fixed completely to the slider body, wherein when the pull is connected by post-installation operation, the connecting body for connecting the pull with the body is deformed elastically so that the pull can be attached to the body easily, the pull can be replaced freely, and the connecting body is accommodated in and fixed to the pull main body thereby bearing a long term use. 
     Another object of the invention is to provide a pull of a slider for a slide fastener, in which the connecting body and the pull main body can be fastened and fixed to each other effectively by specifying a configuration of an engaging portion. 
     Further object of the invention is to provide a pull of a slider for a slide fastener, in which the connecting body is fastened and fixed to the pull main body easily and effectively by specifying a configuration of the holding portion. 
     Still another object of the invention is to provide a pull of a slider for a slide fastener, in which effective fastening function is exerted by specifying a configuration of the slit. 
     Further object of the invention is to provide a pull of a slider for a slide fastener, in which the connecting body and the pull main body can be connected with each other in a stabilized condition without any play thereby bearing long term use. 
     To achieve the above-described objects, according to the invention, in the slider for a slide fastener, the pull is comprised of the connecting body and the pull main body, the connecting body has the pull connecting ring with the attachment plate formed integrally with a part of the pull connecting ring and the slit is provided so as to communicate with the pull connecting ring and the attachment plate and divide the attachment plate. Further, the engaging portion capable of engaging the pull main body is provided on the attachment plate such that its front end is bent, the pull main body contains the accommodating portion capable of accommodating the attachment plate, provided on a side in which it is connected to the attachment plate, and the holding portion capable of holding the engaging portion provided on the attachment plate is provided in the accommodating portion. Thus, the attachment plate of the connecting body can be connected with the pull main body integrally. Consequently, when attaching the pull to the pull attachment portion fixed to the body by post-installation operation, the right and left attachment plates provided on the pull connecting ring can be deformed elastically in opposite directions easily. As a result, the connecting body can be attached to the pull attachment portion easily. Further, because the engaging portion provided on the attachment plate is inserted into and held by the accommodating portion in the pull main body, the connecting body and the pull main body are never separated easily from each other by such external force as tension or twisting. 
     Preferably, the engaging portion each provided on the attachment plate of the connecting body, which are engaged with the accommodating portion, are disposed on both sides of the slit provided in the attachment plate, such that they are protruded from a face or both faces of the attachment plate. Alternately, the engaging portion each provided on the attachment plate of the connecting body, which are engaged with the accommodating portion, are disposed on both side edges of the attachment plate, such that they are protruded from a face or both faces of the attachment plate. Consequently, the engaging portion, which is a mechanism for engaging the connecting body and the pull main body, can be formed on the attachment plate with a simple structure and hold the connecting body and the pull main body securely. 
     Preferably, the holding portion for holding the engaging portion of the attachment plate provided on the pull main body has a through hole or a concave groove communicating with the accommodating portion. Consequently, the holding portion, which is a mechanism for engaging the connecting body and the pull main body, can be formed in the accommodating portion with a very simple structure and achieve a secure holding. 
     Further preferably, the slit provided in the attachment plate of the connecting body is formed in a center of the attachment plate. Consequently, a space for disposing the engaging portion on each of both sides of the slit can be secured sufficiently, so that the connecting body and the pull main body can be connected with each other firmly. 
     Preferably, the accommodating portion provided in the pull main body for accommodating the attachment plate contains a protrusion, into which the slit provided in the attachment plate can be fitted, on a bottom of the accommodating portion. Consequently, the pull connecting ring and the pull main body can be connected with each other in a stable condition without any play. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a partially broken front view of a slider having a pull of a slider for a slide fastener. 
     FIG. 2 is a partially broken side view of the slider having the same pull. 
     FIG. 3 is an exploded front view of the slider having the same pull. 
     FIG. 4 is a front view showing a state in which a connecting body is attached to a body in the slider having the pull. 
     FIG. 5 is a front view showing a modification of the connecting body of the slider having the same pull. 
     FIG. 6 is a partially broken side view showing a modification of a pull main body in the slider having the same pull. 
     FIG. 7 is a partially broken front view showing a modification of the pull main body in the slider having the pull. 
     FIG. 8 is a perspective view of a well-known pull of a slider for a slide fastener. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Hereinafter, the preferred embodiments of a pull of a slider for a slide fastener of the invention will be described in detail with reference to the accompanying drawings. 
     In a pull of a slider for a slide fastener of the invention, both ends of a mounting lever of a pull attachment portion  3  are fixed to a top face of an upper plate  23  of a slider body  1  and the pull  2  formed by connecting a connecting body  4  and a pull main body  13  is attached to the pull attachment portion  3 . Thus, the pull  2  may be attached to the pull attachment portion  3  formed integrally on the body  1  of the slider by post-installation operation. 
     According to the first embodiment of a slider shown in FIGS. 1 to  4 , the connecting body  4  is used to attach the pull main body  13  to the pull attachment portion  3  of the slider body  1 . In the connecting body  4 , an attachment plate  6  is provided integrally on one side of a ring-like pull connecting ring  5  and a straight slit  7  is made in a center of the attachment plate  6  from the pull connecting ring  5 . Engaging portions  8  are provided at both sides of the slit  7 . The engaging portions  8  are engaging lingulated pieces  8 , each of which extends from a tip side of the attachment plate  6  toward a pull connecting ring  5  side. By providing hook-like slits  7 ′ being continuous to the slit  7 , engaging lingulated pieces  8  are formed on both sides of the slit  7 . A base portion  9  of each of the engaging lingulated pieces  8  is connected to the attachment plate  6  and a free end portion  10  is formed at its front end such that it is flexible and deformable. The free end portion  10  is provided such that it is bent as if it is protruded from a surface of the attachment plate  6  as shown in FIG.  2 . Stepped portions  11  are formed on both side edges of the attachment plate  6  as a guide face which facilitates connection between the attachment plate  6  and the pull main body  13 . It is preferable to form the connecting body  4  by pressing a steel plate, because it is convenient to provide it with elasticity. 
     The pull main body  13 , which is to be connected with the attachment plate  6  of the connecting body  4 , is so formed that its side to be connected to the connecting body  4  is thicker as shown in FIG.  2 . An opening  15 , which substantially coincides with a sectional shape of the attachment plate  6 , is provided in this thicker portion and then, a rectangular accommodating portion  14  enough deep to accommodate the attachment plate  6  up to its stepped portions  11  is formed. The stepped portions  11  oppose with side edge portions  15   a  of the opening  15  when the attachment plate  6  is accommodated in the accommodating portion  14 . The stepped portions  11  and the side edge portions  15   a  are contacted or opposed each other with a little gap. A square through hole  17  is made in any one of front and rear faces of this accommodating portion  14  and a holding portion  16  capable of holding the free end portion  10  of the engaging lingulated piece  8  in a bent condition, when the attachment plate  6  is accommodated in the through hole  17 , is formed in the attachment plate  6 . The pull main body  13  can be formed in various types by die-casting with metal such as zinc alloy, conveniently, so that the beautiful pull  2  can be finished. 
     For assembling the pull  2 , first, the connecting body  4  is mounted to the pull attachment portion  3  of the slider body  1  by displacing the connecting body  4  in opposite directions via the slit  7  in the attachment plate  6  of the connecting body, for example, such that one attachment plate  6  and the other attachment plate  6  are deflected in up and down directions by elastic deformation. Consequently, the ring-like pull connecting ring  5  of the connecting body  4  is attached to the pull attachment portion  3 . Next, the pull main body  13  is connected with the connecting body  4  attached to the pull attachment portion  3 . At the time, the attachment plate  6  is inserted into the accommodating portion  14  through the opening  15  such that the free end portion  10  of the engaging lingulated piece  8  provided in a bent condition on the attachment plate  6  corresponds to the holding portion  16  in the through hole  17 . If the free end portion  10  of the engaging lingulated piece  8  is held by the holding portion  16 , the connecting body  4  is connected with the pull main body  13  so that the pull  2  is mounted on the slider body  1 . 
     If it is intended to replace the pull main body  13  engaged with the attachment plate  6  of the connecting body  4  or the connecting body  4  attached to the pull attachment portion  3 , the engaging lingulated piece  8  may be pressed through the through hole  17  and retreated from the through hole  17 , thereby making it possible for the attachment plate  6  to escape from the accommodating portion  14  of the pull main body  13  easily. Further, if it is intended to remove the connecting body  4  from the pull attachment portion  3 , the attachment plates  6  of the connecting body  4  from which the pull main body  13  is removed may be pressed in opposite vertical directions by using the slit  7  with the elastic deformation and then, removed from the pull attachment portion  3 . Consequently, the pull  2  can be replaced easily. 
     It is permissible to bend the engaging lingulated pieces  8  provided on the attachment plate  6  of the connecting body  4  in opposite vertical directions on both sides of the slit  7  and to form the through holes  17  in both vertical faces of the accommodating portion  14  serving as the holding portions  16  formed in the accommodating portion  14  of the pull main body  13 , so that the holding portions  16  hold the engaging lingulated pieces  8 . Further, it is permissible to form a concave groove  18  in a holding portion  16  instead of the through hole  17 . 
     The second embodiment shown in FIGS. 5 and 6 indicates a modification of a connecting mechanism between the pull connecting ring  5  and the pull main body  13 . The engaging lingulated pieces  8 , which should be provided on the attachment plate  6  of the pull connecting ring  5 , are provided on both outside edges of the attachment plate  6  and for example, by providing the side edge of the attachment plate  6  with a hook-like slit  7 ′, the engaging lingulated piece  8  is formed such that the base portion  9  of the engaging lingulated piece  8  is connected to the attachment plate  6 . The free end portions  10  formed on a contrary end to the base portions in the engaging lingulated pieces  8  are bent respectively such that each of the free end portions is protruded in one of opposite vertical directions. 
     The accommodating portion  14  formed in the pull main body  13  has the opening  15 , into which the attachment plate  6  can be inserted, provided on a side for connecting the pull connecting ring  5 . The depth of the opening is formed such that up to the stepped portion  11  of the attachment plate  6  can be accommodated and the concave groove  18  is provided in the entire width of each of the top and lower faces of the accommodating portion  14  which the engaging lingulated piece  8  makes contact with when the attachment plate  6  is accommodated, so as to form the holding portion  16  capable of holding the free end portion  10  of the engaging lingulated piece  8 . In the meantime, the pull main body  13  is formed by die-casting with zinc alloy like the above-described embodiment. 
     When assembling the pull  2 , the attachment plate  6  of the connecting body  4  is inserted into the accommodating portion  14  formed in the pull main body  13 , so that the free end portion  10  of the engaging lingulated piece  8  is held by the holding portion  16  of the concave groove  18  and fixed there. Consequently, the pull  2  is completed. 
     Meanwhile, it is permissible to bend the engaging lingulated pieces  8  provided on the attachment plate  6  of the connecting body  4  in the same direction at the right and left of the slit  7  so as to be held by the holding portion  16  of the concave groove  18  formed on one face of the accommodating portion  14 . Further, the through hole  17  may be provided instead of the concave groove  18  so that the engaging lingulated piece  8  is held thereby. 
     Finally, the third embodiment shown in FIG. 7 will be described. FIG. 7 shows a modification of the accommodating portion  14  of the pull main body  13 , which accommodates the attachment plate  6  of the connecting body  4 . The configuration of the accommodating portion  14  is substantially the same as the first embodiment, but its different configuration is that a protrusion  20  equal in size to the slit  7  provided on the attachment plate  6  is formed in a center of the bottom of the accommodating portion  14  such that it is protruded toward the opening  15  side. When the attachment plate  6  is inserted, the slit  7  provided in the attachment plate  6  is fitted into this protrusion  20  and consequently, no play occurs relative to the attachment plate  6 , thereby achieving stabilized connection.