TWM648163U - Hand tool for holding bicycle sprocket - Google Patents

Abstract

The present invention relates to a hand tool for holding bicycle sprockets, which includes two pivotally connected gripping parts. A grip is formed at one end of each gripping part for the operator to hold. A clamping part is formed at the other end of the part. The grips and clamping parts of the two holding parts are respectively opposite to each other. A surface for clamping the bicycle sprocket is formed on the opposite surface of the clamping part of each holding part. The clamping part thereby constitutes a hand tool that can improve the convenience and safety of assembling or disassembling the bicycle sprocket.

Description

Hand tool for holding bicycle sprockets

The present invention relates to a hand tool, particularly a hand tool used to clamp bicycle sprockets.

Bicycles are now a very popular means of transportation. In order to enable bicycles to ride smoothly on uphill or downhill roads, bicycles are usually equipped with a speed change mechanism. The speed change mechanism mainly uses chains of different sizes. The sprockets of the existing transmission mechanism are mainly divided into two groups, front and rear, which are respectively arranged on the crank and rear wheel coaxially with the pedal, and the sprockets are coaxially arranged Most of the sprocket sets on the rear wheel have multiple sprockets with different diameters and numbers of teeth. When assembling the sprocket set on the rear wheel, the assembler usually holds the sprocket set coaxially on the rear wheel shaft. on the rear wheel, and then use hand tools such as a socket wrench to screw a fixing bolt on the rear axle to fix the sprocket set coaxially on the rear wheel. In order to assemble or disassemble the fixing bolt, the assembler only needs to operate with one hand. In addition to the socket wrench, the other hand needs to hold the rear wheel or sprocket set at the same time to facilitate the screw locking or loosening of the fixing bolt. However, the existing assembly or disassembly method of holding the rear wheel or sprocket with one hand will not only make it dirty The assembler's hands can also easily cause injuries to the assembler's hands, so further improvements are necessary.

Therefore, the present invention is specifically designed to improve the deficiencies caused when assembling or disassembling the existing sprockets. Through continuous research and testing, the invention has been developed to improve the existing deficiencies.

The main purpose of the present invention is to provide a hand tool for clamping a bicycle sprocket, which can firmly clamp the bicycle sprocket and achieve the purpose of improving the convenience of assembling or disassembling the bicycle sprocket.

In order to achieve the above purpose, the present invention mainly provides a hand tool for holding a bicycle sprocket, which includes two pivotally connected gripping parts, and a grip for the operator to hold is formed at one end of each gripping part. A clamping part is formed at the other end of each gripping part. The grips and clamping parts of the two gripping parts are respectively opposite to each other. A usable The clamping part is used to clamp the bicycle sprocket.

In the hand tool for clamping bicycle sprockets, the locking part on one of the holding parts is in the form of a groove, and several mutually spaced and generally circular locking blocks are formed in the groove. , and a locking groove into which a sprocket tooth on the sprocket can be stuck is formed between two adjacent locking blocks.

In the hand tool for clamping bicycle sprockets, the number of clamping blocks is three.

In the hand tool for clamping bicycle sprockets, the clamping part on one of the holding parts is a protruding part on the surface of the clamping part that can be clamped between two sprocket teeth of the bicycle sprocket. Jamming bumps in space.

In the hand tool for clamping bicycle sprockets, the shape of the clamping convex is generally circular.

The hand tool used to clamp bicycle sprockets, in which the clamping part of the gripping part forming the groove clamping part is composed of three clamping pieces stacked up and down, wherein the upper clamping piece and the lower clamping piece The shapes of the clamping pieces are the same. A groove piece is protruding from the inner side of the end of the upper and lower clamping pieces away from the handle, so that a space is formed between the two groove pieces to form the groove, and the middle clamping piece is far away from the handle. The inner surface of one end is protruded with several spaced and generally circular blocking blocks.

The hand tool for clamping bicycle sprockets, wherein the clamping part of the holding part forming the clamping convex clamping part is composed of two clamping pieces superimposed up and down, and the two clamping pieces are The shapes are the same, and a locking convex portion is protruding from the inner side of the end of the two clamping pieces away from the handle.

In the hand tool for clamping bicycle sprockets, the pivot connection between the two holding parts is movably adjustable.

The hand tool for holding bicycle sprockets has a long adjustment groove recessed on one of the holding parts, and a plurality of mutually spaced positioning teeth are provided on an inner surface of the adjustment groove. The pivot shaft passes through the adjustment groove and passes through another holding part before being fixed.

Through the above technical means, the present invention can use the locking parts on the two holding parts to lock and position the sprocket teeth, so that the hand tool can be used to hold or clamp the fixed sprocket to facilitate sprocket assembly or installation. During the disassembly operation, the operator's hands do not need to touch the sprocket or rear wheel during the assembly and disassembly of the sprocket, thereby improving the convenience and safety of sprocket assembly or disassembly. sexual person.

10: Grip part

12: Grip

13:Adjustment slot

132: Positioning gear

14: Clamping Department

152: Top clip film

1522:Slot piece

154: Lower clip film

154:Slot piece

156:Cover film

16:Card production department

162: Groove

162: Groove

164: Card block

166: card slot

20: Grip part

22:Grip

24: Clamping Department

26:Card production department

262: Jamming bump

27: Clamp the film

272: Lower clip film

30:Pivot

Figure 1 is a three-dimensional appearance view of the present invention.

Figure 2 is a partial three-dimensional exploded view of the clamping part of the new grip part.

Figure 3 is a partial three-dimensional appearance view of the clamping portion of another gripping portion of the present invention.

Figure 4 is a plan view of the new clamped bicycle sprocket.

Figure 5 is a partially enlarged plan view of the locking part of the grip part and the sprocket of the new invention.

Figure 6 is a partially enlarged plan view of the locking part of another holding part of the present invention and the sprocket.

Figure 7 is a schematic plan view of the new bicycle sprocket used to assemble or disassemble.

This new type of hand tool mainly provides a hand tool for holding bicycle sprockets. Please refer to Figures 1 to 3. As can be seen from the figures, the new type of hand tool mainly includes a handle with two phases connected by a pivot. The holding parts 10, 20 are formed with a handle 12, 22 that can be held by the operator at one end of each holding part 10, 20, and a clamping part 14, 24 is formed at the other end of each holding part 10, 20. The handles 12, 22 and clamping portions 14, 24 of the gripping portions 10, 20 are respectively opposite to each other, and an adjustable surface is formed on the opposite surface of the clamping portions 14, 24 of each gripping portion 10, 20. The locking parts 16 and 26 are used to lock the bicycle sprocket. The locking part 16 on a gripping part 10 can be in the form of a groove 162, and several mutually spaced and generally shaped grooves 162 are formed in the groove 162. In one embodiment of the present invention, the number of circular clamping blocks 164 can be three, and a gap is formed between two adjacent clamping blocks 164 for clamping a sprocket tooth on the sprocket. The locking groove 166 inserted therein, and the locking part 26 on the other holding part 20 may be a generally circular locking protrusion 262 protruding from the surface of the clamping part 24, and the locking protrusion 262 The block 262 can be inserted into the space between the two sprocket teeth of the bicycle sprocket. In addition, the grooves 162 or the engaging protrusions 262 can also be formed on the engaging portions 16 and 26 of the two gripping portions 10 and 20 respectively. The Card Control Department16,26.

Therefore, when the operator wants to hold the sprocket of the bicycle, please refer to Figures 4 to 6, he can hold the handles 12, 22 of the two grip parts 10, 20 with one hand, and then pull the chain Two adjacent sprocket teeth of the wheel are locked into the locking groove 166 in the locking part 16 of the groove 162, and then the locking part 26 of the other holding part 20 is stuck in the locking protrusion 262. In the space between two adjacent sprocket teeth of the sprocket, the operator can use the new hand tool to clamp the sprocket of the bicycle. When the sprocket is to be assembled on the rear wheel of the bicycle, as shown in Figure 7 , the sprocket can be coaxially sleeved on the rear wheel, and then use a socket wrench or other tools with the other hand to screw a fixing bolt onto the rear axle of the bicycle, thus completing the assembly of the sprocket. There is no need to hold the rear wheel or sprocket with hands, thus preventing the operator from directly contacting the sprocket with his hands during the process of assembling the sprocket, thereby avoiding soiling or injury to the hands.

When you want to disassemble the sprocket from the bicycle wheel, you can also use the clamping parts 16, 26 of the clamping parts 14, 24 on the two gripping parts 10, 20 to respectively lock parts of a sprocket. sprocket to fix the sprocket, then use a socket wrench or other tools to loosen the fixing bolt, and then clamp the sprocket with this new hand tool to separate the sprocket from the rear axle, and so on. When disassembling the sprocket, the operator does not need to hold the rear wheel or the sprocket with his hands. This prevents the operator from directly contacting the sprocket with his hands during the process of disassembling the sprocket, thereby avoiding soiling or injury to the hands. .

Please refer to Figure 2. The clamping part 14 of the gripping part 10 forming the groove 162 clamping part 16 is composed of three clamping pieces 152, 154, 156 stacked up and down. The upper clamping piece 152 and the lower clamping piece 152 are stacked up and down. The shape of the piece 154 is the same. A groove piece 1522, 1542 is protruding from the inner side of the end of the upper and lower clamping pieces 152, 154 away from the handle 12. In this way, when the clamping pieces 152, 154, 156 are overlapped with each other, there will be a gap between the two groove pieces 1522, 1542. A space is formed to form the groove 162, and several spaced and generally circular blocking blocks 164 are protruding from the inner surface of the end of the middle clamping piece 156 away from the handle, so that the middle clamping piece 156 is clamped After the upper and lower clamping pieces 152 and 154 are made, the groove pieces 1522 and 1542 of the upper and lower clamping pieces 152 and 154 and the clamping block 164 on the middle clamping piece 156 can be used to form a recess with the clamping block 164 and the clamping groove 166 inside. Slot clamping part 16.

Please refer to Figure 3. The clamping portion 24 of the gripping portion 20 that forms the clamping portion 26 of the clamping protrusion 262 is composed of two clamping pieces 27 and 272 stacked up and down. The shapes of the two clamping pieces 27 and 272 are Similarly, the locking protrusions 262 are respectively protruded from the inner surfaces of the ends of the two clamping pieces 27 and 272 away from the handle.

In addition, please refer to Figure 1. The pivot connection of the two holding parts 10 and 20 is movable and adjustable. A long adjustment groove 13 is recessed on one of the holding parts 10. The adjustment groove 13 A plurality of mutually spaced positioning teeth 132 are provided on an inner surface. A pivot 30 passes through the adjustment groove 13 and then passes through the other holding part 20 before being fixed, so that the two holding parts 10 and 20 can be spaced apart. They are pivotally connected to each other in a movable and adjustable manner, so that by moving the pivot 30 in the adjustment groove 13, the opening size between the clamping parts 14 and 24 of the two gripping parts 10 and 20 can be adjusted to allow the hand to The tool holds sprockets of different sizes to improve the flexibility of use of the new hand tool.

It can be seen from the above that various modifications and changes can be made without departing from the spirit of the present invention and the scope of the novel concept, and the specific embodiments disclosed in the present invention are not intended to limit the present invention. This disclosure includes All modifications fall within the scope of the attached patent application.

10: Grip part

12: Grip

13:Adjustment slot

132: Positioning gear

14: Clamping Department

16:Card production department

162: Groove

164: Card block

166: card slot

20: Grip part

22:Grip

24: Clamping Department

26:Card production department

262: Jamming bump

30:Pivot

Claims (9)

A hand tool for holding bicycle sprockets, which includes two pivotally connected gripping parts. A grip is formed at one end of each gripping part for the operator to hold, and a handle is formed at the other end of each gripping part. A clamping portion is formed. The handles and clamping portions of the two gripping portions are respectively opposite to each other, and a clamping portion that can be used to clamp the bicycle sprocket is formed on the opposite surface of the clamping portion of each gripping portion. . The hand tool for clamping bicycle sprockets as described in claim 1, wherein the locking portion on one of the holding portions is in the form of a groove, and several mutually spaced and generally circular holes are formed in the groove. The clamping blocks form a clamping groove between the two adjacent clamping blocks into which a sprocket tooth on the sprocket can be clamped. The hand tool for clamping bicycle sprockets as described in claim 2, wherein the number of clamping blocks is three. The hand tool for clamping bicycle sprockets as described in any one of claims 1 to 3, wherein the clamping part on one of the holding parts is a protrusion on the surface of the clamping part for clamping The locking bump in the space between the two sprocket teeth of the bicycle sprocket. The hand tool for clamping bicycle sprockets as described in claim 4, wherein the shape of the clamping convex is generally circular. The hand tool for clamping bicycle sprockets as described in claim 2 or 3, wherein the clamping portion of the gripping portion forming the groove clamping portion is composed of three clamping pieces stacked up and down, wherein The shape of the upper clamping piece and the lower clamping piece are the same. A groove piece is protruding from the inner side of the end of the upper and lower clamping piece away from the handle, so that a space is formed between the two groove pieces to form the groove, and there is a groove in the middle. The inner surface of the end of the clamping piece away from the handle is protruded with several spaced and generally circular clamping blocks. The hand tool for clamping bicycle sprockets as described in claim 4, wherein the clamping portion forming the gripping portion of the clamping convex clamping portion is composed of two clamping pieces stacked up and down, The shapes of the two clamping pieces are the same, and a locking convex portion is protruding from the inner side of the end of the two clamping pieces away from the handle. The hand tool for clamping bicycle sprockets as described in any one of claims 1 to 3, wherein the pivot connection of the two holding parts is arranged in a movably adjustable pivot connection. The hand tool for holding bicycle sprockets as described in any one of claims 1 to 3, wherein a long adjustment groove is recessed on one of the holding parts, and an inner surface of the adjustment groove is provided with There are a plurality of positioning teeth spaced apart from each other, and a pivot shaft passes through the adjustment groove and passes through the other holding part to be fixed.

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