Abstract:
A dust protection seat for the blade shaft of a wood-planing device is disclosed. The dust prevention seat for the blade shaft of a wood planning device has a small volume that facilitates storage and transporting and the method of fabrication is simple and the cost of production is low. In addition, if partial of the device component is damaged, the component can be replaced.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     (a) Technical Field of the Invention  
         [0002]     The present invention relates to a dust protection seat, and in particular, a dust protection seat for the blade shaft of a wood-planing device. The seat has a small volume that facilitates storage and transporting and the method of fabrication is simple and the cost of production is low. In addition, if partial of the device component is damaged, the component can be replaced.  
         [0003]     (b) Description of the Prior Art  
         [0004]     As shown in  FIGS. 1, 2  and  3 , there is shown a conventional dust-proof seat  2  for the blade shaft of a wood-planing device having a working platform  15  on the device body of the wood-planing device. A semi-circular shape protection cover  20  for the blade shaft  16  is provided on the working platform  15 . The two sides of the top surface of the protection cover  20  are provided with an elongated slot  200  allowing a fastening latch  29  to lock to the working platform  15 , and protection cover  20  can be adjusted to correspond to the front and rear position, as shown in  FIG. 3  of the blade shaft  16 . One side of the protection cover  20  is protruded with a securing plate  21 , wherein a T-shaped latching rod  22  and an adjusting knob  220  are used to lock an urging plate  23  having a corresponding T-shape slot  230  to urge a working piece. The combination of the T-shaped latching rod  22  and the T-shaped slot  230  adjusts the left and right position of the urging plate  23 , as shown in  FIG. 2 . The protective cover  20  is positioned at a different position of the horizontal securing plate  21  to form a leaning face  24  having a locking hole  240 . The leaning face  24  has a cornered adjusting plate  26  having a corresponding adjusting hole  260 . The end face of the adjusting plate  26  is provided with a screw hole  261  and the protective cover  20  is a protruded lug  25  having a pivotal hole  250  for using the adjusting latch  27  provided on the protruded lug  25  to adjust the position of the cornered adjusting plate  26 , as. shown in  FIG. 4 . The adjusting latch  28  can be locked or to loose adjusting plate  26 . At the same time, the adjusting plate  26  makes use of the urging plate  23  to move the position of the plate  23 , as shown in  FIG. 2 , and to adjust the size of opening of planing. The adjusting plate  26  can be used to adjust the front and rear position of the leaning plate  23 .  
         [0005]     As shown in  FIG. 5 , the adjusting seat  40  is an inverted L-shaped securing frame  41  locked to the working platform  15 . The free end of the securing frame  41  is provided with a cover block  42  having a packing latch  420 . The cover block  42  is provided with an extension rod  43  having a securing slot  430 . The front and rear section of the extension rod  43  are an adjusting block  44 ,  47  having a packing latch  440 ,  470 . The two adjusting blocks  44 ,  47  are respectively mounted with upright rods  45 ,  48  and the packing latch  450 ,  480  are used to adjust the height and the bottom end of the two upright rods  45 ,  48  are respectively mounted with a press block  46  and a blocking plate  49  to stop a working piece or to block dust.  
         [0006]     The drawbacks of the conventional protection cover are that the cost of production is high and zinc material is used and if a small part is defect in the fabrication process, the entire piece has to be discarded. The other drawbacks are that-the capacity is large and is not convenient in shipping, and the entire structure has to be discarded in case a small component is defect. Another drawback of the conventional seat is that the longevity is short due to the fact that zinc material will undergo oxidation. Accordingly, it is an object of the present invention to provide a dust protection seat for the blade shaft of a wood-planing device which mitigates the above drawbacks.  
       SUMMARY OF THE INVENTION  
       [0007]     Accordingly, it is an object of the present invention to provide a dust prevention seat for the blade shaft of a wood planning device having a protection cover module and an adjusting seat, the protection cover module positioned at a working platform of the device body of the planning device and covering the blade shaft protruded from the working platform and the adjusting seat positioned on the protection cover module to urge a work piece and block dust, characterized in that the protection cover module includes a rear plate, two side plates, two moving cornered plate and a cover plate seat, the two sides of the rear plate are extended forwardly on engaging plate for engagement with the side plate, and the two side plates are formed with corresponding engaging slots for locking with a lock component, and the top edge of the two side plates are formed with a long slot for adjustment of front and rear position, and the surface of the cornered plate corresponding to the two side plates is formed with a long adjusting hole and the adjusting hole is locked to a latching rod at the side plate, and the horizontal section of the cornered plate is slidably mounted with a leaning plate; and the cover plate seat locked to the rear plate and the side plate is a plate body, and the two sides of the cover plate seat are formed with long slots corresponding to the long slot of the side plate, and screw latch is used to lock the cover plate seat and the side plate of the protection cover module to the working platform  
         [0008]     Still another object of the invention is to provide a dust protection seat for the blade shaft of a wood-planing device, wherein the rear plate of the protection cover module has a through hole mounted with a tube seat connected to a wind tube, an engaging structure is used to engage to the through hole so that the wind tube sucks away saw dust during a planning process.  
         [0009]     Yet another object of the present invention is to provide a dust protection seat for the blade shaft of a wood-planing device, wherein the two sides of the rear plate of the protection cover module are protrudingly mounted with protruded plate pivotally mounted with an adjusting latch and the end face of the moving cornered plate corresponding to the protruded plate is a screw hole for the mounting of the adjusting latch, and the rotating of the adjusting latch adjust the front and rear position of the cornered plate.  
         [0010]     Yet still another object of the present invention is to provide a dust protection seat for the blade shaft of a wood-planing device, wherein a T-shaped latching rod and an adjusting knob are used to lock the leaning plate and the rear face of the leaning plate is provided with T-shaped sliding slot.  
         [0011]     The foregoing object and summary provide only a brief introduction to the present invention. To filly appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.  
         [0012]     Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.  
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0013]      FIG. 1  is an exploded perspective view of a conventional dust protection seat for the blade shaft of a wood-planing tool.  
         [0014]      FIG. 2  is a schematic view showing the urging plate action of the conventional dust protection seat.  
         [0015]      FIG. 3  is a schematic view of the protection cover action of the conventional dust protection seat.  
         [0016]      FIG. 4  is a schematic view showing the comer-shape adjusting action of the conventional dust protection seat.  
         [0017]      FIG. 5  is a schematic view showing the adjusting seat action of the conventional dust protection seat.  
         [0018]      FIG. 6  is an exploded perspective view of the dust protection seat of the blade shaft of a wood-planing device of the present invention.  
         [0019]      FIG. 7  is a perspective view of the dust protection seat for the blade shaft of the wood-planing tool of the present invention.  
         [0020]      FIG. 8  is a schematic view of the dust protection seat of the present invention.  
         [0021]      FIG. 9  is a perspective exploded view of the adjusting seat of the present invention.  
         [0022]      FIGS. 10, 10A ,  10 B are schematic views showing the adjusting action of the adjusting seat of the present invention.  
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT  
       [0023]     The following descriptions are of exemplary embodiments only, and are not intended to limit the scope, applicability or configuration of the invention in any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims.  
         [0024]     Referring to  FIG. 6 , there is shown a dust protection seat  5  for the blade shaft of a wood-planing device comprising a protective cover module and an adjusting seat  7 . The protective cover module is mounted on the working platform  15  of the device body  10  of the wood-planing device and covers the blade shaft  16  protruded out from the working platform  15 , allowing a work piece to lean against and allowing the scope of adjustment of the planing blade. The adjusting seat  7  is mounted on the protective cover module to urge a work piece and to block dust.  
         [0025]     As shown in  FIGS. 6 and 7 , the protective module includes a rear plate  50 , two side plates  54 , two moving cornered plate  55  and a covering seat  60  which are made by extruding of aluminium material.  
         [0026]     The two lateral sides of the rear plate  50  are protruded out with horizontal protruded plate  500  and the two protruded plates  500  are pivotally mounted with an adjusting latch  501 . Further, the rear plate  50  is formed with a through hole  51 , and the through hole  51  is a tube seat  52  connected to a wind tube. The tube seat  52  has an engaging structure  520  to engage with the through hole  51  of the rear plate  50  to allow the wind tube to suck away the saw dust after a wood-planing process. The two lateral sides of the rear plate  50  are extended forward with an engaging plate  53  for engaging with a side plate  54 . The two side plates  54  are formed with corresponding engaging slot  540  which is urged or locked by means of a locking component. The top edge of the two side plates  54  is formed into a through elongated slot  541  for adjusting the front and rear position of the protective cover module. The surface at the outer side of the two side plates  54  corresponding to the moving cornered plate  55  is formed into a long adjusting hole  550 . The two moving cornered plates  55  employ a latching rod  56  to pass through the adjusting hole  550  and locked to the outer side face of the two side plates  54 . The end face of the protruded plate  500  corresponding to the moving cornered plate  55  is formed a screw hole  551  and the screw hole  551  allows the adjusting latch  501  of the protruded plate  500  to be locked and the rotating of the adjusting latch  501  adjusts the front and rear position of the moving cornered plate  55 , and the long adjusting hole  550  is used to adjust the front and rear position of the moving cornered plate  55 . Another horizontal section of the two moving cornered plate  55  employs a T-shaped latching rod  57  and an adjusting knob  570  to respectively locked to a leaning plate  58  having a T-shaped sliding slot  580  to lean against a work piece. The top face of the two moving cornered plate  55  is provided with a corresponding shape cornered cover plate  59  to prevent the accumulation of debris as a result of the through hole of the cornered plate  55 .  
         [0027]     The cover plate seat  60  locked to the rear plate  50  and the side plate  54  is recessed plate body, and the two sides of the cover plate seat  60  is extended forward with a lateral plate corresponding to the side plate  54 . The two side plates  61  are formed into long slot  62  corresponding to the long slot  541  of the side plate  54  so that the screw latch  63  is used to lock the side plate  54  of the protective cover module and the cover plate  60  onto the working platform  15 . Between the two side plates  61  of the cover plate seat  60 , a cover plate  65  having a corresponding shape is engaged. The circumferential edge of the cover plate  65  has an engaging slot  66  so that the cover plate  65  can slidably engage to the cover plate seat  60 , facilitating loading and unloading.  
         [0028]      FIGS. 9, 10 ,  10 A and  10 B show the structure of the adjusting seat  7 . The securing frame  70  is mounted onto the top face of the cover plate seat  60  and the middle section of the securing frame  70  is a partition plate  71 . The securing frame  70  at the top face and the bottom face of the partition plate  71  are formed with corresponding engaging slot  710 . The front section of the securing frame  70  is provided with a seat block  72 , and the top and bottom end face of the seat block  72  are formed with an engaging slot  720  corresponding to the engaging slot  710  of the securing frame  70 . The securing frame  70  and the seat block  72  are mounted together with a locking plate  73 . Thus, the center of the seat block  72  is mounted with a polygonal rod  77  and one side of the seat block  72  is locked with a screw latch  74 . The seat block  72  is at different side of the top edge of the screw latch  74  and is extended with a protruded block  721 . At the same lateral side of the securing frame  70  is positioned with a corresponding securing block  75  and the protruded block  721  of the seat block  72  is locked with a screw latch  76  which urges the securing block  75  so as to adjust the height of the polygonal rod  77 , partially shown in  FIG. 10A , and a pressing structure and a blocking plate structure are mounted to the polygonal rod  77 .  
         [0029]     The polygonal rod  77  is mounted with a sliding mount  80  having polygonal hole  81  for the mounting of the polygonal rod  77 . The top face of the sliding mount  80  has a vertical hole  82  having one side in communication with a horizontal hole  81  at one side, as shown in  FIG. 10B . The sliding mount  80  has an inclined locking hole  83  in communication with the vertical hole  82 . The inclined locking hole  83  is provided with a screw latch  84  and the vertical hole  82  is for the insertion of an vertical rod  85  having a press block  86  at the bottom end. Thus, when the screw latch  84  is tighten to the vertical rod  85 , the vertical rod  85  will press against the polygonal rod  77 . Thus, a single tightening of the screw latch  84  will loosen or tighten the vertical rod  85  and the polygonal rod  77 . Therefore the height and the front and rear position of the pressing structure can be easily and conveniently adjusted.  
         [0030]     The pressing structure of the polygonal rod  77  is mounted with a sliding mount  90  at the front thereof The sliding mount  90  is provided with horizontal hole  91  for the passage of the rod  77 . The top face of the sliding mount  90  is formed with vertical hole  92  and one side edge of the vertical hole  92  and the horizontal hole  91  are in communication at one side, partially shown in  FIG. 10B . The sliding mount  90  is formed with an inclined locking hole  93  in communication with the vertical hole  92 . The inclined locking hole  93  has a screw latch  94 , and the vertical hole  92  provides passage for a vertical rod  95  having a blocking plate  96  at the bottom end. Thus, when the screw latch  94  is tighten to the vertical rod  95 , the vertical rod  95  at the same time presses against the rod  77 . Thus, a single tightening of the screw latch  94  will loosen or tighten the vertical rod or the polygonal rod  77 , thus the height and the front and rear position of the blocking plate structure can be easily and conveniently adjusted.  
         [0031]     As for application of the present invention, as shown in  FIGS. 7 , and  8 , the latching rod  56  of the moving cornered plate  55  is loosen, and the adjusting latch  501  at the rear plate  50  is rotated. Thus, the front and rear position of the moving cornered plate  55  is adjusted so as to determine the depth of the planing process. In combination with the adjustment of the work piece, the adjusting knob  570  of the T-shaped latching rod  57  can be loosen so that the left and right position of the leaning plate  58  is adjusted so as to determine the range of planing. At the same time, the screw latch  63  to the side plate  54  can be adjusted to adjust the front and rear position of the entire protective cover module.  
         [0032]     When the position of the pressing structure and the blocking plate structure on the adjusting seat  7  are to be adjusted, as shown in  FIG. 10 , the screw latch  76  of the seat block  72  is used to fine tune the height of the polygonal rod  77 . Also, the screw latch  84 ,  94  on the sliding mount  80 ,  90  can be loosen and this will adjust the front and rear position of the sliding mount  80 ,  90  with respect to the polygonal rod  77 , and at the same time, the vertical rod  85 ,  95  with respect to the height of the mount  80 ,  90  is adjusted to comply with the requirement of planing process.  
         [0033]     The advantages of the present invention are that (i) cost of production is low, (ii) the volume of the device is small which facilitates storage and shipping, (iii) the components of the device can be partially changed, (iv) the longevity of the device is extended, and (v) the device is easily operated.  
         [0034]     It will be understood that each of the elements described above, or two or more together may also find a useful application in other types of methods differing from the type described above.  
         [0035]     While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention.