Abstract:
The invention relates to a foldable tool set installed with a chain repair tool. The tool set has a housing and foldaway tools pivoted on the housing. The chain repair tool comprises a main body and an ejector pin screwed on top of the main body. The chain repair tool is pivoted on the tool set and can be folded within the tool set or lifted outward. In addition, an arm is included and one end of it is pivoted on one side of the chain repair tool to control movement of the chain repair tool. The chain repair tool and the arm are folded together in the housing. Accordingly, operation of disassembling and reassembling of chains can be conducted with this tool set without any other required tools.

Description:
BACKGROUND OF THE INVENTION 
   The invention relates to a hand tool, and more particularly to a foldable tool set with a chain repair tool designed for bicycles providing better and more convenient features. 
   The foldable tool set is popular with bicycle lovers, thanks to its easiness to carry, availability of various sizes and types of tools, such as lug wrenches and screwdrivers. Some tool sets are mounted a chain repair tool that is used to disassemble and reassemble chains. Thus, users can utilize the tool set to repair their bicycles outdoors. 
   A conventional tool set with a chain repair tool  10  is shown in  FIG. 1 . A number of foldable tools  12  are pivoted on both ends of its casing  11 . A chain repair tool is combined in this tool set. The chain repair tool comprises a main body  14  and an ejector pin  16  screwed in the main body. When placing a chain unto the body, use a lug wrench to rotate the ejector pin to push the pin on the joint of the chain for the purpose of disassembling and reassembling the chain. 
   A rod body  18  is extended from the main body  14  of the chain repair tool and is pivoted on the casing  11  of the tool set  10 . Accordingly, a chain repair tool is installed on the foldable tool set. However, only the main body  14  and the ejector pin  16  can&#39;t achieve disassembly and reassembly of chains. As a result, a lug wrench not being part of the tool set is required to rotate the ejector pin  16 . In other words, the operation of disassembling and reassembling chains can&#39;t be completed by merely single tool set. 
   Another conventional foldable tool set  20  with a chain repair tool is shown in  FIG. 2 . Likewise, multiple tools  22  are pivoted on both ends of the outer covering  21 . One end of a rod  24  is pivoted to the casing  21  of the tool set and a profile of a ejector pin  25  is formed on the free end of the rod. The main body  26  of the chain repair tool is screwed unto the ejector pin  25 . Therefore, a chain repair tool comes into existence and is attached to the foldable tool set. In addition, one small piece  28  is extended from the bottom of main body of the chain repair tool. 
   To operate this device, use fingers of one hand to grab the small piece  28  and rotate the casing  21  with the other hand to drive the ejector pin  25 . 
   No extra tool is required to rotate the ejector pin  25  of the tool set  20  shown in  FIG. 2 , nevertheless, the strength implemented is limited and such operation is inconvenient. As the small piece  28  only provides limited space to grab and the holding strength of fingers is confined, operation efficiency is reduced greatly. It might be applicable to general chains of inferior quality; however, disassembling of chains with higher quality and precision like Shimano chains produced in Japan would be impossible. It is because the operation method derived from such structure won&#39;t be able to provide sufficient force. Thus, its application is even more limited than that shown in  FIG. 1 . 
   SUMMARY OF THE INVENTION 
   It is therefore a primary object of the present invention to provide a foldable tool set with a chain repair tool so that no extra tool is required while operating the chain repair tool and obtaining sufficient force to disassemble and reassemble chains. 
   It is a further object of the present invention to provide the foldable tool set that is folded in small volume. 
   The present invention can be best understood through the following description and accompanying drawings wherein: 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a perspective view of a conventional foldable tool set; 
       FIG. 2  is a perspective view of another conventional foldable tool set; 
       FIG. 3  is a perspective view of a preferred embodiment of the present invention and showing the tool set is collected; 
       FIG. 4  is a perspective exploded view according to  FIG. 3 ; 
       FIG. 5  shows the chain repair tool of  FIG. 3  being pulled; 
       FIG. 6  is a view according to  FIG. 3 , showing the operation of the preferred embodiment; 
       FIG. 7  is a perspective view of another preferred embodiment of the present invention; 
       FIG. 8  is a perspective view of still another preferred embodiment of the present invention; 
       FIG. 9  is a sketch according to  FIG. 8 , showing that the preferred embodiment is collected; 
       FIG. 10  is a view according to  FIG. 8 , showing the operation of the preferred embodiment; 
       FIG. 11  is a perspective view of still another preferred embodiment of the present invention; 
       FIG. 12  is a sketch according to  FIG. 11 , showing that the preferred embodiment is collected; 
       FIG. 13  is a perspective view of still another preferred embodiment of the present invention; and 
       FIG. 14  is a perspective view of the chain repair tool and lever according to  FIG. 13 . 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   Please refer to  FIGS. 3 and 4 . According a first embodiment, the foldable tool set  30  of the present invention includes: a housing  31 , multiple tools  34  and a chain repair tool  40 . 
   The housing  31  in this embodiment is constituted but not limited to one pair of parallel S-shape bars. Alternatively, it can be the housing  122  as shown in  FIG. 13 . A storage space is formed inside the housing. 
   The tools  34  are consisted of different sizes or types of tools, like lug wrenches, screwdrivers of different sizes or types, or knives or tools of other types. The tools  34  are pivoted to both ends of the housing  31  by two bolts  35  served as the fulcrum of rotation and facilitating folding towards the housing  31  or lifting outwards for use. 
   The chain repair tool  40  is consisted of a main body  42  and an ejector pin  45 . A concave room  43  is formed on the top of the main body  42 . A screwed hole  44  is formed on one end of the main body and communicating with the concave room  43 . The ejector pin  45  has a bolt section  46 . One end of the bolt section  46  is formed with a pin section  47 , while the other end of the bolt section is mounted a connecting section  48 . The ejector pin  45  is screwed in the screwed hole  44  of the main body  42  to facilitate the pin section  47  to enter the concave room  43 . The chain repair tool  40  is pivoted unto a bolt  35  on one end of the housing  31  by the connecting section  48  so that the chain repair tool may be integrated with the tool set and foldable. 
   The present invention further comprises an arm  50 , which is a lever, having one end pivoted to the free end of the main body  42  of the chain repair tool  40  and the other end made into an arc engaging section  52 . There is an extension  421  on the bottom of the free end of the main body  42 . One end of the arm  50  is pivoted between two lugs formed on the bottom of the extension  421 . 
   In the structure exposed in this embodiment, one end (the ejector pin end) of the chain repair tool  40  is pivoted unto the housing  31  of the tool set and the other end (the main body end) is pivoted to the arm  50 . 
     FIG. 3  illustrates that the chain repair tool  40  is folded inside the tool set  20  achieved by (the connecting section  48  of) the ejector pin  45  as a point of turning to fold it towards the housing  31 . The arm  50  along with the chain repair tool  40  is folded into the housing. The arm  50  is about parallel to the ejector pin  45  and the engaging section  52  of the arm is stuck to one end of the tool set. Thus, the chain repair tool is folded and positioned upon the tool set. 
   Pull the chain repair tool  40  and the arm  50  outward shown as the imaginary line in  FIG. 3  for use. Get the engaging section  52  of the arm  50  away from one end of the tool set and turn the tool  40  and arm  50  in a way as shown in  FIG. 5 . Referring to  FIG. 6 , place and position a chain in the concave room  43 . Rotate the housing  31  to drive the ejector pin  45 . When the pin section  47  pushes up the pin of the chain joint, the chain will be ready for disassembling or reassembling. 
     FIG. 7  shows a second preferred embodiment of the present invention. Likewise, the foldable tool set  60  also consists of a housing  62 , multiple tools  64  pivoted to both ends of the housing, a chain repair tool  65  (including a main body  66  and an ejector pin  67 ) and an arm  68 . As installation of the chain repair tool  65  unto the tool set  60  is the same as that of the previous embodiment, no unnecessary details will be given. 
   There is no engaging section on the free end of the arm  68  in this embodiment. When the chain repair tool  65  is collected on the housing  62 , the arm  68  is collected altogether and the arm and the chain repair tool are positioned side by side. As operation of this embodiment is identical to that shown in  FIG. 6 , no unnecessary details will be given. 
     FIG. 8  is a third preferred embodiment of the foldable tool set  70  of the present invention. 
   A housing  80  has a storage space inside. 
   Multiple tools  85  are pivoted to bolts  82  on both ends of the housing respectively for folding or lifting outwardly. 
   A chain repair tool  90  has a main body  92  and an ejector pin  95 . Likewise, there is a concave room  93  on top of the main body  92 . A screwed hole  94  is formed in one end of the main body  92  and communicating with the concave room  93  for the ejector pin  95  being screwed in the screwed hole. A bar  96  is extended from the other end of the main body  92  of the chain repair tool and the bar is about parallel to the axial direction of the hole  94  approximately. The chain repair tool is folded inward in the tool set or lifted outward via the free end of the bar  96  pivoted to one end of the tool set. 
   Like the aforesaid, this embodiment also includes an arm  98 . One end of the arm is pivoted to the outer end  951  of the ejector pin  95  for turning of the arm  98  relative to the chain repair tool. 
   In this embodiment, one end (the main body end) of the chain repair tool  90  is pivoted to the housing of the tool set and the other end (the ejector pin end) of the repair tool is pivoted with the arm  98 . 
   Refer to  FIG. 9  for folding and collecting the chain repair tool  90  and the arm  98  towards the tool set  70 . The arm  98  is collected on the bottom of the chain repair tool  90  and folded towards the housing  80  together with the chain repair tool. The arm is about parallel to the longitudinal of the chain repair tool and the arm and the repair tool are side by side vertically. Besides, it is comprehensible that folding and collecting method is not limited to that shown in  FIG. 9 . Locate the arm at one side of the chain repair tool by turning the arm  98  and the ejector pin  95 . In this way, the arm and the chain repair tool can be positioned side by side horizontally, as shown in  FIG. 7 , not vertically. Likewise, folding and collecting method of the embodiment in  FIG. 7  may apply as shown in  FIG.9 , i.e., the arm  68  rested at the bottom of the chain repair tool  65  in a stacking way like  FIG. 9  illustrates. 
   Refer to  FIG. 10  for operation of this embodiment. Grab the housing  80  with one hand and turn the arm  98  with the other hand to drive the ejector pin  95  for chain disassembly or reassembly. 
     FIG. 11  illustrates the fourth preferred embodiment of this invention. The structure of the tool set  100  and the chain repair tool  110  is similar to that of the embodiment shown in  FIG. 8 . One end of the arm  115  is pivoted to the free end of the ejector pin  114  on the chain repair tool. 
   The arm  115  in this embodiment is a U-shaped lever of cross section to form an indented space  116 . The arm  115  can be turned via two lugs  118  on one end of the arm pivoted to the free end of the ejector pin  114 . 
   In collecting the device, fold the arm  115  towards the chain repair tool  110  and then fold them together into the tool set  100  as  FIG. 12  shows. Meanwhile, the main body  112  of the chain repair tool is collected in the indented space  116  so that storage space is economized. 
     FIG. 13  illustrates the fifth preferred embodiment of the foldable tool set  120  of the present invention. The structure of the tool set is similar to that of the first embodiment. The chain repair tool  130  is pivoted to one bolt  124  of the tool set  120  at one end of the ejector pin  132  and one end of the arm  140  is pivoted to the main body  134  of the chain repair tool. 
   Threads  142  are formed on the circumference of the arm  140 . A flat pull section  144  is formed on the free end of the arm as  FIG. 14  shows. Furthermore, a nut  145  is screwed on the threads  142  of the arm. When the arm  140  is pulled outwardly from the main body  134  of the chain repair tool shown as  FIG. 14 , the arm may reach into the rim of a bicycle via the pull section  144  to get the tire out of the rim for repair. The arm  140  can be kept in position by rotating the nut  145  abutting against the main body  134 . 
   Effects of this invention are listed as follows: 
   The tool used to drive the chain repair tool is integrated with the chain repair tool ingeniously in this invention and installed on the foldable tool set. Therefore, the single set of foldable tool set provided by this invention is capable of disassembling and reassembling chains. Users may accomplish the task of chain repair by merely carrying this tool set with them without any other tool. 
   Among the embodiments exposed by this invention, the arm is served as the resistance in the embodiments shown in  FIGS. 3 ,  7  and  13  (Refer to  FIG. 6  for operation.) providing sufficient length for users to grip. However, the arm is served as the effort in the embodiments shown in  FIGS. 8 and 11  (Refer to  FIG. 10  for operation.) providing enough length for users to turn, too. Grabbing and holding of the housing and the arm may generate sufficient torsion to disassemble and reassemble chains, which contributes to the capability of this invention in disassembling and reassembling various types of chains. 
   The chain repair tool and the arm are ingeniously installed on the tool set for easy collection. The integral tool set is streamlined, compact and easy to carry and store. 
   The above embodiments are only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiments can be made without departing from the spirit of the present invention.