Abstract:
A crimping unit and a crimping tool including the crimping unit are disclosed in the present invention. The crimping unit includes a plurality of headers. Each header includes at least one die. The plurality of headers are respectively pivotally connected to the crimping tool such that the headers can be rotated to switch the die.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a crimping unit and a crimping tool; more particularly, the present invention relates to a crimping unit and a crimping tool having a switchable die. 
         [0003]    2. Description of the Related Art 
         [0004]    Currently, signal transmission is accomplished with many kinds of signal cables and signal connectors, such as the coaxial cable and connector for transferring cable television signals, the internet cable and RJ45 connector for transferring internet signals, and the telephone cable and RJ11 connector for transferring telephone signals. To connect a cable to a corresponding device, a corresponding connector must be installed on the end of a cable; usually, the manufacturer will use a crimping tool for a specific cable to connect the cable and the connector. 
         [0005]    The crimping tool for cable of the prior art is used for crimping a connector with a specific specification; therefore, when crimping a connector with a different specification (such as an F-connector, or Bayonet Neill-Concelman connector), or crimping the connector with the same form and a different size (such as a different length), the manufacturer must use a different crimping tool. Although there is a crimping tool that has a removable crimping terminal to crimp cables of different specifications and forms, the crimping tool of the prior art still has many disadvantages. 
         [0006]    Therefore, there is a need to provide a new crimping tool to solve the disadvantages of the prior art. 
       SUMMARY OF THE INVENTION 
       [0007]    It is an object of the present invention to provide a crimping unit having a switchable die. 
         [0008]    It is another object of the present invention to provide a crimping tool with the abovementioned crimping unit wherein the crimping tool has a switchable die. 
         [0009]    To achieve the abovementioned object, according to one embodiment of the present invention, the crimping unit of the present invention is applied to the crimping tool. The crimping unit includes a plurality of headers. Each of the plurality of headers includes at least one die, and the plurality of headers respectively are pivotally connected to the crimping tool such that the plurality of headers can be rotated to switch the at least one die. 
         [0010]    According to one embodiment of the present invention, one header of the plurality of headers includes a convex lug, and the convex lug is located on an outer edge of the header. When the header rotates to a specific position, the convex lug interferes with the other headers and prevents the other headers from rotating. 
         [0011]    According to one embodiment of the present invention, the specifications of the dies are different from each other. 
         [0012]    According to one embodiment of the present invention, the plurality of headers include a first header and a second header. The first header includes a first die, the second header includes a second die and a third die, and the specifications of the first die, the second die, and the third die are different from each other. The second header comprises a convex lug, the convex lug being located on an outer edge of the second header, such that when the second header rotates to a specific position, the convex lug interferes with the first header and prevents the first header from rotating. 
         [0013]    According to one embodiment of the present invention, the crimping unit of the present invention is applied to the crimping tool. The crimping unit includes a header. The header includes at least one die. The header is pivotally connected to the crimping tool such that the header can be rotated to switch the die. 
         [0014]    According to one embodiment of the present invention, the crimping tool of the present invention includes an upper grip, a lower grip, a connecting rod, and a crimping unit. The lower grip is pivotally connected to the upper grip. The lower grip includes a chute and a container. The connecting rod is located in the chute, wherein one end of the connecting rod is pivotally connected to the upper grip and a briquetting is installed on another end. When force is applied to the upper grip, the connecting rod slides in the chute. The crimping unit is located in the container, and the crimping unit includes a plurality of headers. Each of the plurality of headers includes at least one die, and the plurality of headers are respectively pivotally connected to the lower grip such that the plurality of headers can be rotated to switch the die. 
         [0015]    According to one embodiment of the crimping tool of the present invention, one header of the plurality of headers includes a convex lug, and the convex lug is located on an outer edge of the header. When the header rotates to a specific position, the convex lug interferes with the other headers and prevents the other headers from rotating. 
         [0016]    According to one embodiment of the crimping tool of the present invention, the specifications of the dies are different from each other. 
         [0017]    According to one embodiment of the crimping tool of the present invention, the plurality of headers include a first header and a second header, wherein the first header includes a first die and the second header includes a second die and a third die and the specifications of the first die, the second die, and the third die are different from each other. The second header includes a convex lug, the convex lug being located on an outer edge of the second header, such that when the second header rotates to a specific position, the convex lug interferes with the first header and prevents the first header from rotating. 
         [0018]    According to one embodiment of the present invention, the crimping tool of the present invention includes an upper grip, a lower grip, a connecting rod, and a crimping unit. The lower grip is pivotally connected to the upper grip, and the lower grip includes a chute and a container. The connecting rod is located in the chute, one end of the connecting rod is pivotally connected to the upper grip, and a briquetting is installed on another end. When force is applied to the upper grip, the connecting rod slides in the chute. The crimping unit is located in the container, and the crimping unit includes a header. The header includes at least one die. The header is pivotally connected to the lower grip such that the header can be rotated to switch the die. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0019]      FIG. 1  illustrates a schematic drawing of the crimping tool according to the first embodiment of the present invention. 
           [0020]      FIG. 2  illustrates an exploded perspective view of the crimping tool according to the first embodiment of the present invention. 
           [0021]      FIG. 3  illustrates a schematic drawing of the convex lug according to the first embodiment of the present invention. 
           [0022]      FIG. 4A ,  FIG. 4B , and  FIG. 4C  illustrate the operation schematic drawings of the crimping tool according to the first embodiment of the present invention. 
           [0023]      FIG. 5  illustrates an exploded perspective view of the crimping tool according to the second embodiment of the present invention. 
           [0024]      FIG. 6A  and  FIG. 6B  illustrate the operation schematic drawings of the crimping tool according to the second embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT  
       [0025]    These and other objects and advantages of the present invention will become apparent from the following description of the accompanying drawings, which disclose several embodiments of the present invention. It is to be understood that the drawings are to be used for purposes of illustration only, and not as a definition of the invention. 
         [0026]    Please refer to  FIG. 1  and  FIG. 2 .  FIG. 1  illustrates a schematic drawing of the crimping tool according to the first embodiment of the present invention.  FIG. 2  illustrates an exploded perspective view of the crimping tool according to the first embodiment of the present invention. As shown in  FIG. 1  and  FIG. 2 , according to the first embodiment of the present invention, the crimping tool  100  includes an upper grip  110 , a lower grip  120 , a connecting rod  130 , a crimping unit  140 , and a screw shaft  150 . The upper grip  110  and the lower grip  120  are represented as pole-shaped, wherein the lower grip  120  includes a chute  122  and a container  124 . One end of the lower grip  120  is pivotally connected to the upper grip  110 , and a die  126  is installed on another end. The user can apply force to the upper grip  110  and the lower grip  120  to cause the crimping tool  100  to switch between a crimping state and a releasing state. The chute  122  is a long strip space for allowing the connecting rod  130  to slide in the chute  122 . The container  124  is located between the chute  122  and the die  126  and is for allowing the crimping unit  140  to be placed. 
         [0027]    As shown in  FIG. 1  and  FIG. 2 , according to the first embodiment of the present invention, the connecting rod  130  is a long strip and is located in the chute  122 , wherein one end is pivotally connected to the upper grip  110  and a briquetting  132  is installed on another end. When the user applies force to the upper grip  110 , the upper grip  110  drives the connecting rod  130 , allowing the connecting rod  130  to slide in the chute  122 , such that the briquetting  132  can move forward or backward. 
         [0028]    As shown in  FIG. 1  and  FIG. 2 , according to the first embodiment of the present invention, the crimping unit  140  is located in the container  124 . The crimping unit  140  includes a first header  142  and a second header  144 . One end of the first header  142  and the second header  144  can be respectively pivotally connected to the lower grip  120  via the screw shaft  150 . Another end of the first header  142  includes a first die  1422 . Another end of the second header  144  includes a second die  1442  and a third die  1444 . Via rotating the first header  142  or the second header  144  to a suitable position, the first die  1422 , the second die  1442 , and the third die  1444  can be switched among. If the specifications of the first die  1422 , the second die  1442 , and the third die  1444  are different from each other, the user can choose a suitable die according to the connector to be crimped and then crimp the connector. It is to be understood that the amount of the headers and the amount of the dies on the header are not limited by the present embodiment; the amounts can be changed according to the actual requirements of the user. In addition, to allow the lower grip  120  to pivotally connect the first header  142  and the second header  144 , the screw shaft  150  also has the functions of pushing and position limiting. 
         [0029]    Please refer to  FIG. 3 ,  FIG. 4A ,  FIG. 4B , and  FIG. 4C .  FIG. 3  illustrates a schematic drawing of the convex lug according to the first embodiment of the present invention.  FIG. 4A ,  FIG. 4B , and  FIG. 4C  illustrate the operation schematic drawings of the crimping tool according to the first embodiment of the present invention. 
         [0030]    As shown in  FIG. 3 , according to the first embodiment of the present invention, the second header  144  includes a convex lug  146 . The convex lug  146  is located on an outer edge of the header  144 , and the convex lug  146  is used for preventing the first header  142  from rotating. As shown in  FIG. 4A ,  FIG. 4B , and  FIG. 4C , the user can switch among the first die  1422 , the second die  1442 , and the third die  1444  to choose a suitable die according to the connector which is to be crimped. For example, as shown in  FIG. 4A , when crimping the connector which fits the second die  1442 , the user can rotate the second die  1442  to a position towards the briquetting  132  and rotate the first die  1422  of the first header  142  to a position which is not towards the briquetting  132 , such that the convex lug  146  can prevent the first header  142  from rotating. As shown in  FIG. 4B , the user can also rotate the first die  1422  and the second die  1442  to a position towards the briquetting  132 . As shown in  FIG. 4C , when the user wants to crimp a connector that fits the third die  1444 , the user can rotate the third die  1444  to a position towards the briquetting  132  and rotate the first die  1422  of the first header  142  to a position that is not towards the briquetting  132 . 
         [0031]    Please refer to  FIG. 5 ,  FIG. 6A , and  FIG. 6B , which illustrate a second embodiment of the present invention.  FIG. 5  illustrates an exploded perspective view of the crimping tool according to the second embodiment of the present invention.  FIG. 6A  and  FIG. 6B  illustrate the operation schematic drawings of the crimping tool according to the second embodiment of the present invention. 
         [0032]    As shown in  FIG. 5 , according to the second embodiment of the present invention, the crimping tool  200  also includes an upper grip  210 , a lower grip  220 , a connecting rod  230 , a crimping unit  240 , and a screw shaft  250 . The lower grip  220  includes a chute  222  and a container  224 . One end of the lower grip  220  is pivotally connected to the upper grip  210 , and a die  226  is installed on another end. The connecting rod  230  is located in the chute  222 . One end of the connecting rod  230  is pivotally connected to the upper grip  210 , and briquetting  232  is installed on another end. When the user applies force to the upper grip  210 , the upper grip  210  drives the connecting rod  230  such that the connecting rod  230  slides in the chute  222 . The difference between the second embodiment and the first embodiment is that the crimping unit  240  includes only a header  242 , and the header  242  has only a die  2422 . The header  242  is pivotally connected to the lower grip  220  via the screw shaft  250  such that the header  242  can be rotated to switch to the die  2422 . In addition to allowing the header  242  to pivotally connect to the lower grip  220 , the screw shaft  150  also has the functions of pushing and position limiting. 
         [0033]    As shown in  FIG. 6A , when the user wants to crimp a connector that fits the die  2422 , the user can rotate the die  2422  to a position towards the briquetting  232 . As shown in  FIG. 6B , one end of the lower grip  220  has a die  226 ; therefore, when crimping a connector that fits the die  226 , the user can rotate the header  242 , allowing the die  2422  of the header  242  to be in a position which is not towards the briquetting  232 , whereupon the user can use the die  226  to crimp directly. It is to be known that the amount of the dies on the header is not limited by the present embodiment; the amount can be changed according to the actual requirements of the user. 
         [0034]    It is noted that the above-mentioned embodiments are only for illustration. It is intended that the present invention cover modifications and variations of this invention provided they fall within the scope of the following claims and their equivalents. Therefore, it will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present invention without departing from the scope or spirit of the invention.