Bicycle frame positioning jig for positioning chain cover attachment

Abstract

The utility model belongs to bicycle technical field discloses a bicycle frame positioning jig for positioning chain cover mounting, this bicycle frame positioning jig for positioning chain cover mounting includes base, first positioning component, limit stop and second positioning component, first positioning plate is used for positioning the five -way of frame, first push -and -pull mechanism is used for the five -way of frame is pressed tightly on first positioning plate, limit stop sets up in the other end of base, limit stop is used for positioning the hook of frame, second positioning plate is slidably arranged in base and is used for positioning chain cover mounting, second push -and -pull mechanism sets up in base and is connected in second positioning plate, under the action of second push -and -pull mechanism, second positioning plate slides relative to base and can press chain cover mounting tightly on frame, reach the target position of chain cover mounting, guarantee the position and angle of frame five -way to chain cover mounting, solve the problem that chain cover mounting can not very perfect assembly when assembling.

Description

Technical Field

[0001] This utility model relates to the field of bicycle technology, and in particular to a bicycle frame positioning fixture for positioning chain cover removal. Background Technology

[0002] In the welding process of electric bicycle frames, the traditional chain cover assembly process adopts a step-by-step operation mode: First, the chain cover assembly is assembled with the chain fork, and then the assembled chain fork assembly is assembled with the front triangle of the frame. This process can ensure the relative position between the chain fork and the chain cover assembly, as well as the relative position between the chain fork assembly and the frame. After the frame assembly and welding are completed, the overall frame is then aligned.

[0003] However, in the actual production process, due to the different positioning base points of the two welding processes, the connection between the frame bottom bracket and the chain cover attachment was not positioned during the welding process. This made it impossible to guarantee the position and angle between the frame bottom bracket and the chain cover attachment, resulting in uneven assembly gaps around the chain cover attachment during final assembly.

[0004] Therefore, there is an urgent need for a bicycle frame positioning fixture for positioning chain cap removal and installation to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a bicycle frame positioning fixture for positioning the chain cover attachment, which ensures the position and angle of the bottom bracket of the frame to the chain cover attachment, and solves the problem that the chain cover attachment cannot be perfectly assembled during assembly.

[0006] To address the aforementioned problems in the existing technology, this utility model adopts the following technical solution:

[0007] Bicycle frame positioning fixtures for positioning chain caps include:

[0008] Base;

[0009] The first positioning component includes a first positioning plate and a first push-pull mechanism disposed at one end of the base. The first positioning plate is used to position the bottom bracket of the frame, and the first push-pull mechanism is used to press the bottom bracket of the frame onto the first positioning plate.

[0010] A limiting plate is disposed at the other end of the base, and the limiting plate is used to position the hook of the frame;

[0011] The second positioning component is located between the limiting plate and the first positioning component. The second positioning component includes a second positioning plate and a second push-pull mechanism. The second positioning plate is slidably disposed on the base and used for positioning the chain cover removal. The second push-pull mechanism is disposed on the base and connected to the second positioning plate. Under the action of the second push-pull mechanism, the second positioning plate slides relative to the base and can press the chain cover removal onto the frame.

[0012] Preferably, the first positioning plate has a first insertion part and a second insertion part protruding from it. The first insertion part and the second insertion part are spaced apart along the height direction of the first positioning plate, and the first insertion part and the second insertion part can be inserted into the bottom bracket of the vehicle frame.

[0013] Preferably, the first push-pull mechanism includes a fixed base, a clamping member, a pusher, a connecting member, and a push rod. The fixed base is disposed on the base and has a sliding hole and a guide hole. The clamping member is slidably inserted through the sliding hole. The pusher is rotatably connected to the fixed base. The two ends of the connecting member are rotatably connected to the pusher and the push rod, respectively. The push rod is slidably inserted through the guide hole. The push rod can push the clamping member under the action of the pusher, so that the clamping member can press the bottom bracket of the frame into the second insertion part.

[0014] Preferably, the first push-pull mechanism further includes a locking member, the fixed base is provided with a connecting hole, the base is provided with a mounting hole, and the locking member passes through the connecting hole and is connected to the mounting hole.

[0015] Preferably, the connecting hole is configured as an oblong hole structure.

[0016] Preferably, the clamping member includes a sliding part, a connecting part, and a contact part. The connecting part is connected to the sliding part and the contact part, and the connecting part is perpendicular to the sliding part. The sliding part slides through the sliding hole, and the contact part can be inserted into the bottom bracket of the vehicle frame.

[0017] Preferably, the connecting part has a slot, and the contact part is engaged in the slot.

[0018] Preferably, both the connecting portion and the contact portion are provided with vent holes.

[0019] Preferably, the second positioning plate has a first positioning part and a second positioning part protruding from it. The first positioning part and the second positioning part are spaced apart along the height direction of the second positioning plate. The first positioning part and the second positioning part can be respectively inserted into the two positioning holes of the chain cover attachment.

[0020] Preferably, the bottom of the second positioning plate is provided with a guide portion, the base is provided with a sliding groove, the guide portion is located in the sliding groove and can slide along the length direction of the sliding groove.

[0021] The beneficial effects of this utility model are as follows:

[0022] This utility model provides a bicycle frame positioning fixture for positioning and attaching chain guards. The first positioning component includes a first positioning plate and a first push-pull mechanism disposed at one end of a base. The first positioning plate positions the bottom bracket of the frame, and the first push-pull mechanism presses the bottom bracket against the first positioning plate. A limiting plate is disposed at the other end of the base and positions the hooks of the frame. The second positioning component includes a second positioning plate and a second push-pull mechanism. The second positioning plate is slidably disposed on the base and used for positioning and attaching the chain guard. The second push-pull mechanism is disposed on the base and connected to the second positioning plate. After the frame is assembled and aligned, firstly, the frame is placed on top of the base, and using the bottom bracket as a positioning reference point, the first push-pull mechanism is pushed all the way down. Under the action of the first push-pull mechanism, the bottom bracket of the frame is pressed against the frame, and simultaneously, the bottom bracket is pressed against the first positioning plate, completely fixing the frame. Secondly, the limiting plate positions the hooks to ensure the inner width of the hooks. Finally, based on the position and angle of the chain cover attachment, a guide is installed between the second push-pull mechanism and the second positioning plate. Pulling the second push-pull mechanism all the way down allows the second positioning plate to slide relative to the base and press the chain cover attachment firmly onto the frame, achieving the target position for the chain cover attachment. This ensures the correct position and angle from the frame bottom bracket to the chain cover attachment, resolving the issue of imperfect assembly of the chain cover attachment during assembly. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the first structure of the bicycle frame positioning fixture for positioning the bicycle frame and chain cover attachment, provided in an embodiment of the present invention.

[0024] Figure 2 A schematic diagram of the second structure for positioning the bicycle frame and chain cover removal using the bicycle frame positioning fixture provided in this embodiment of the utility model;

[0025] Figure 3 A schematic diagram of the structure of the bicycle frame positioning fixture provided in this embodiment of the utility model;

[0026] Figure 4 A schematic diagram of the structure of the first push-pull mechanism provided in an embodiment of this utility model.

[0027] Figure label:

[0028] 100. Frame; 101. Bottom bracket; 102. Hanger; 200. Chain cover attachment;

[0029] 1. Base; 11. Slide groove;

[0030] 2. First positioning plate; 21. First insertion part; 22. Second insertion part;

[0031] 3. First push-pull mechanism; 31. Fixed base; 311. Sliding hole; 312. Guide hole; 313. Connecting hole; 32. Clamping element; 321. Sliding part; 322. Connecting part; 323. Contact part; 33. Push handle; 34. Connecting element; 35. Push rod;

[0032] 4. Limit plate;

[0033] 5. Second positioning plate; 51. First positioning part; 52. Second positioning part; 53. Guide part;

[0034] 6. Second push-pull mechanism. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] like Figures 1-4 As shown, in this embodiment, the bicycle frame positioning fixture for positioning the chain cover retrieval includes a base 1, a first positioning component, a limiting plate 4, and a second positioning component. The first positioning component includes a first positioning plate 2 and a first push-pull mechanism 3 disposed at one end of the base 1. The first positioning plate 2 positions the bottom bracket 101 of the frame 100, and the first push-pull mechanism 3 presses the bottom bracket 101 of the frame 100 against the first positioning plate 2. The limiting plate 4 is disposed at the other end of the base 1 and positions the hook 102 of the frame 100. The second positioning component is located between the limiting plate 4 and the first positioning component. The second positioning component includes a second positioning plate 5 and a second push-pull mechanism 6. The second positioning plate 5 is slidably disposed on the base 1 and is used to position the chain cover retrieval 200. The second push-pull mechanism 6 is disposed on the base 1 and connected to the second positioning plate 5. Under the action of the second push-pull mechanism 6, the second positioning plate 5 slides relative to the base 1 and can press the chain cover retrieval 200 against the frame 100.

[0040] Along the length of the base 1, a first positioning component, a second positioning component, and a limiting plate 4 are arranged at intervals. The first positioning plate 2 is fixedly installed on the base 1 with bolts. Along the width of the base 1, a first push-pull mechanism 3 is arranged at intervals with the first positioning plate 2. The limiting plate 4 is fixedly installed on the base 1 with bolts, and a second positioning plate 5 is installed on the base 1 with bolts. Along the width of the base 1, a second push-pull mechanism 6 is arranged at intervals with the second positioning plate 5.

[0041] After the frame 100 is assembled and aligned, firstly, the frame 100 is placed on top of the base 1, and with the bottom bracket 101 of the frame 100 as the positioning reference point, the bottom bracket 101 of the frame 100 is aligned and placed on the first positioning plate 2. Then, the first push-pull mechanism 3 is pushed all the way down, pressing against the bottom bracket 101 of the frame 100 under the action of the first push-pull mechanism 3. At the same time, the bottom bracket 101 of the frame 100 is pressed tightly against the first positioning plate 2, completely fixing the frame 100. Next, the hook 102 of the frame 100 contacts the limiting plate 4. The limiting plate 4 positions the hook 102 to ensure the inner width of the hook 102. Finally, according to the position and angle of the chain cover attachment 200, a guide is installed between the second push-pull mechanism 6 and the second positioning plate 5, aligning the chain cover attachment 200 with the second positioning plate 5 to ensure that the angle does not shift. Pulling the second push-pull mechanism 6 to its full extent allows the second positioning plate 5 to slide relative to the base 1 and press the chain cover attachment 200 firmly onto the frame 100, achieving the target position of the chain cover attachment 200. This ensures the position and angle of the chain cover attachment 200 from the bottom bracket 101 of the frame 100 are precisely positioned using the assembly point, preventing uneven gaps or chain interference between the chain cover attachment 200 and the frame 100 during assembly. It also eliminates rework required during the assembly of the frame 100 due to poor welding of the chain cover attachment 200, thus improving production efficiency.

[0042] Furthermore, referring to Figures 1-4 The first positioning plate 2 is provided with a first insertion part 21 and a second insertion part 22. The first insertion part 21 and the second insertion part 22 are spaced apart along the height direction of the first positioning plate 2. The first insertion part 21 and the second insertion part 22 can be inserted into the bottom bracket 101 of the frame 100.

[0043] Both the first insertion part 21 and the second insertion part 22 are integrally formed with the first positioning plate 2, and the interval between the first insertion part 21 and the second insertion part 22 is equal to the interval between the two holes of the bottom bracket 101 of the frame 100. After the frame 100 is assembled and aligned, the frame 100 is placed on top of the base 1, and with the bottom bracket 101 of the frame 100 as the positioning reference point, the first insertion part 21 and the second insertion part 22 are respectively positioned and inserted into the two holes of the bottom bracket 101 of the frame 100. Finally, under the action of the first push-pull mechanism 3, the bottom bracket 101 of the frame 100 is pressed against it, and at the same time, the bottom bracket 101 of the frame 100 is pressed tightly against the first positioning plate 2, completely fixing the frame 100. The first insertion part 21 and the second insertion part 22 play a good role in positioning and fixing the bottom bracket 101 of the frame 100, ensuring that the frame 100 will not flip over.

[0044] Furthermore, referring to Figures 1-4The first push-pull mechanism 3 includes a fixed base 31, a clamping member 32, a pusher 33, a connector 34, and a push rod 35. The fixed base 31 is disposed on the base 1. The fixed base 31 has a sliding hole 311 and a guide hole 312. The clamping member 32 is slidably inserted through the sliding hole 311. The pusher 33 is rotatably connected to the fixed base 31. The two ends of the connector 34 are rotatably connected to the pusher 33 and the push rod 35, respectively. The push rod 35 is slidably inserted through the guide hole 312. The push rod 35 can push the clamping member 32 under the action of the pusher 33, so that the clamping member 32 can press the bottom bracket 101 of the frame 100 against the second insertion part 22.

[0045] The end of the pusher 33 is rotatably connected to the fixed seat 31 via a rotating bearing. The position of the pusher 33 adjacent to its end is rotatably connected to one end of the connector 34 via a rotating bearing. The other end of the connector 34 is rotatably connected to the push rod 35 via a rotating bearing. After the bottom bracket 101 of the frame 100 is positioned by the first insertion part 21 and the second insertion part 22 protruding from the first positioning plate 2, the pusher 33 is pushed forward, causing it to rotate relative to the fixed seat 31. Simultaneously, under the action of the connector 34, the push rod 35 can slide within the guide hole 312, which serves as a guide. The end of the push rod 35 contacts the clamping member 32 and pushes the clamping member 32 to slide within the sliding hole 311, causing the clamping member 32 to press against the bottom bracket 101 of the frame 100. This allows the two holes of the bottom bracket 101 of the frame 100 to be respectively pressed and inserted into the first insertion part 21 and the second insertion part 22.

[0046] Furthermore, referring to Figures 1-4 The first push-pull mechanism 3 also includes a locking member, the fixed base 31 is also provided with a connecting hole 313, the base 1 is provided with a mounting hole, the locking member passes through the connecting hole 313 and is connected to the mounting hole, and the connecting hole 313 is set as an oblong hole structure.

[0047] The locking element is set as a locking bolt. After the fixed seat 31 of the first push-pull mechanism 3 is positioned on the base 1, the locking element is used to fix the fixed seat 31 onto the base 1. That is, the locking element passes through the connecting hole 313 of the fixed seat 31 and is threadedly connected to the mounting hole of the base 1. If it is necessary to adjust the position of the fixed seat 31 relative to the base 1, the locking element is loosened, and the fixed seat 31 slides in a direction that gradually moves closer or further away. The locking element slides within the connecting hole 313 of the waist-shaped structure. Finally, the locking element is locked in place to ensure that the fixed seat 31 remains stationary.

[0048] Furthermore, referring to Figures 1-4 The clamping member 32 includes a sliding part 321, a connecting part 322 and a contact part 323. The connecting part 322 is connected to the sliding part 321 and the contact part 323, and the connecting part 322 is perpendicular to the sliding part 321. The sliding part 321 slides through the sliding hole 311, and the contact part 323 can be inserted into the bottom bracket 101 of the frame 100.

[0049] The connecting part 322 has a slot, and the contact part 323 is engaged in the slot, meaning the contact part 323 and the connecting part 322 are detachably connected. Depending on the diameter of the hole in the bottom bracket 101 of different frames 100, a matching contact part 323 can be replaced, making it widely applicable without needing to replace the entire clamping component 32. This is convenient and has low replacement costs. Pushing the push handle 33 forward, under the action of the connecting part 34, allows the push rod 35 to slide within the guide hole 312. The end of the push rod 35 contacts the connecting part 322 and pushes the sliding part 321 to slide within the sliding hole 311, allowing the contact part 323 to be inserted into the bottom bracket 101 of the frame 100. The clamping component 32 and the first positioning plate 2 provide bidirectional positioning for the bottom bracket 101 of the frame 100.

[0050] Furthermore, referring to Figures 1-4 Both the connecting part 322 and the contact part 323 are provided with vent holes.

[0051] After fixing the bottom bracket 101 of the frame 100 to the first positioning plate 2, push the pusher 33 forward. The end of the push rod 35 contacts the connecting part 322 and pushes the sliding part 321 to slide in the sliding hole 311, so that the contact part 323 is inserted into the bottom bracket 101 of the frame 100. The gas in the hole of the bottom bracket 101 of the frame 100 is discharged through the vent holes of the connecting part 322 and the contact part 323, ensuring that the air pressure inside and outside the hole of the bottom bracket 101 of the frame 100 is balanced, thereby ensuring the normal operation of the positioning work.

[0052] Furthermore, referring to Figures 1-4 The second positioning plate 5 is provided with a first positioning part 51 and a second positioning part 52. The first positioning part 51 and the second positioning part 52 are spaced apart along the height direction of the second positioning plate 5. The first positioning part 51 and the second positioning part 52 can be respectively inserted into the two positioning holes of the chain cover attachment 200.

[0053] The first positioning part 51 and the second positioning part 52 are both integrally formed with the second positioning plate 5, and the interval between the first positioning part 51 and the second positioning part 52 is equal to the interval between the two holes of the chain cover attachment 200. Depending on the position and angle of the chain cover attachment 200, the first positioning part 51 and the second positioning part 52 can be respectively inserted into the two positioning holes of the chain cover attachment 200. Finally, the second push-pull mechanism 6 is pulled all the way down. Under the action of the second push-pull mechanism 6, the second positioning plate 5 can slide relative to the base 1 and press the chain cover attachment 200 firmly onto the frame 100, achieving the target position of the chain cover attachment 200.

[0054] Furthermore, referring to Figures 1-4 The bottom of the second positioning plate 5 is provided with a guide part 53, and the base 1 is provided with a sliding groove 11. The guide part 53 is located in the sliding groove 11 and can slide along the length direction of the sliding groove 11.

[0055] Pull the second push-pull mechanism 6 all the way down. Under the action of the second push-pull mechanism 6, the guide part 53 can slide in the slide groove 11. Under the guidance of the guide part 53 and the slide groove 11, the second positioning plate 5 presses the chain cover removal 200 onto the frame 100, achieving the target position of the chain cover removal 200.

[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A bicycle frame positioning fixture for positioning chain cover removal and installation, characterized in that, include: Base (1); The first positioning component includes a first positioning plate (2) and a first push-pull mechanism (3) disposed at one end of the base (1). The first positioning plate (2) is used to position the bottom bracket (101) of the frame (100), and the first push-pull mechanism (3) is used to press the bottom bracket (101) of the frame (100) onto the first positioning plate (2). A limiting plate (4) is provided at the other end of the base (1), and the limiting plate (4) is used to position the hook (102) of the frame (100); The second positioning component is located between the limiting plate (4) and the first positioning component. The second positioning component includes a second positioning plate (5) and a second push-pull mechanism (6). The second positioning plate (5) is slidably disposed on the base (1) and used to position the chain cover attachment (200). The second push-pull mechanism (6) is disposed on the base (1) and connected to the second positioning plate (5). Under the action of the second push-pull mechanism (6), the second positioning plate (5) slides relative to the base (1) and can press the chain cover attachment (200) onto the frame (100).

2. The bicycle frame positioning fixture for positioning chain cover removal according to claim 1, characterized in that, The first positioning plate (2) is provided with a first plug-in portion (21) and a second plug-in portion (22). Along the height direction of the first positioning plate (2), the first plug-in portion (21) and the second plug-in portion (22) are spaced apart. The first plug-in portion (21) and the second plug-in portion (22) can be plugged into the bottom bracket (101) of the frame (100).

3. The bicycle frame positioning fixture for positioning chain cover removal according to claim 2, characterized in that, The first push-pull mechanism (3) includes a fixed base (31), a clamping member (32), a pusher (33), a connecting member (34), and a push rod (35). The fixed base (31) is disposed on the base (1). The fixed base (31) has a sliding hole (311) and a guide hole (312). The clamping member (32) slides through the sliding hole (311). The pusher (33) is rotatably connected to the fixed base (31). The two ends of the connecting member (34) are rotatably connected to the pusher (33) and the push rod (35) respectively. The push rod (35) slides through the guide hole (312). The push rod (35) can push the clamping member (32) under the action of the pusher (33), so that the clamping member (32) can press the bottom bracket (101) of the frame (100) against the second insertion part (22).

4. The bicycle frame positioning fixture for positioning chain cover removal and installation according to claim 3, characterized in that, The first push-pull mechanism (3) also includes a locking member, the fixed base (31) is provided with a connecting hole (313), the base (1) is provided with a mounting hole, and the locking member passes through the connecting hole (313) and is connected to the mounting hole.

5. The bicycle frame positioning fixture for positioning chain cover removal according to claim 4, characterized in that, The connecting hole (313) is configured as a waist-shaped hole structure.

6. The bicycle frame positioning fixture for positioning chain cover removal according to claim 3, characterized in that, The clamping member (32) includes a sliding part (321), a connecting part (322) and a contact part (323). The connecting part (322) is connected to the sliding part (321) and the contact part (323), and the connecting part (322) is perpendicular to the sliding part (321). The sliding part (321) slides through the sliding hole (311), and the contact part (323) can be inserted into the bottom bracket (101) of the frame (100).

7. The bicycle frame positioning fixture for positioning chain cover removal according to claim 6, characterized in that, The connecting part (322) has a slot, and the contact part (323) is engaged in the slot.

8. The bicycle frame positioning fixture for positioning chain cover removal according to claim 6, characterized in that, Both the connecting part (322) and the contact part (323) are provided with ventilation holes.

9. The bicycle frame positioning fixture for positioning chain cover removal and installation according to claim 1, characterized in that, The second positioning plate (5) is provided with a first positioning part (51) and a second positioning part (52). Along the height direction of the second positioning plate (5), the first positioning part (51) and the second positioning part (52) are spaced apart. The first positioning part (51) and the second positioning part (52) can be respectively inserted into the two positioning holes of the chain cover attachment (200).

10. The bicycle frame positioning fixture for positioning chain cover removal according to claim 1, characterized in that, The bottom of the second positioning plate (5) is provided with a guide part (53), and the base (1) is provided with a sliding groove (11). The guide part (53) is located in the sliding groove (11) and can slide along the length direction of the sliding groove (11).

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