Auxiliary tool for welding bicycle frame

Abstract

The utility model discloses a bicycle frame welding auxiliary tool which comprises a frame seat, a stand column is vertically connected to the frame seat, the lower end side of the stand column is connected with a shaft rod, one side of the stand column is sequentially connected with a first rod, a second rod, a third rod and a fourth rod from bottom to top, the two sides of the first rod are connected with rear fork hanging rods, and the two ends of the second rod are connected with a seat post lower leaning hanging rod and a rear supporting fork hanging rod. The other side of the stand column is sequentially connected with a lower inclined rod and an upper inclined rod from bottom to top, the lower inclined rod and the upper inclined rod are connected with a lining hanging rod and a beam hanging rod, a cross rod is arranged on the stand column between the lower inclined rod and the upper inclined rod, and the outer end of the cross rod is connected with a front fork barrel base. The hanging rods supported by the stand columns are used for hanging and supporting the rod pipes of the frame, the springs on the hanging rods are used for pulling the pipe rods to move backwards so as to limit and stabilize the rod pipes, and welding and positioning are facilitated in cooperation with the shaft pipes arranged on the shaft rods in a sleeving mode and the fork pipes.

Description

Technical Field

[0001] This utility model relates to the field of bicycle manufacturing technology, and in particular to an auxiliary tooling for welding bicycle frames. Background Technology

[0002] The bicycle frame, as the skeleton of the entire bicycle, largely determines and influences the correctness and comfort of riding posture. The frame components are the basic structural parts of the bicycle, serving as its skeleton and main body. The bicycle frame also includes the seatpost, rear fork tube, rear stand fork, beam tube, bushings, and seatpost. The seatpost and rear fork tube are connected together by welding, thus achieving the bicycle frame's mounting function and improving the bicycle's stability.

[0003] A bicycle frame is a support frame assembled and welded from multiple tubes. During the processing of the frame, each component needs to be effectively fixed and limited to ensure that the frame welding is completed and to avoid processing errors, so as to increase the yield rate. For this purpose, this application discloses a bicycle frame welding auxiliary tooling. Utility Model Content

[0004] The purpose of this invention is to address existing problems by providing an auxiliary tooling for welding bicycle frames.

[0005] This utility model is achieved through the following technical solution: A bicycle frame welding auxiliary tooling includes a frame base, a column vertically connected to the frame base, a shaft connected to the lower front surface of the column, and a series of rods connected from bottom to top on one side of the column, namely rod 1, rod 2, rod 3 and rod 4. Rod 1 is connected to the rear fork hanger rods at intervals and through both sides, rod 2 is connected to the seat post lower backrest hanger rod and the rear support fork hanger rod 1 at both ends, rod 3 is connected to the rear support fork hanger rod 2 at the outer end, and rod 4 is connected to the seat post upper backrest hanger rod at the outer end. On the other side of the column, a lower inclined rod and an upper inclined rod are connected at intervals and inclined from bottom to top, respectively. A liner hanger rod and a beam hanger rod are connected at intervals on the lower inclined rod and the upper inclined rod, respectively. A crossbar is set on the column between the lower inclined rod and the upper inclined rod, and the outer end of the crossbar is inclinedly connected to a base plate. A washer ring is connected to the base plate, and a front fork seat is connected to the washer ring.

[0006] As a further improvement to the above solution, a rear pad rod is provided on the front side of the first rod. The two sides of the rear pad rod are symmetrically and rotatably connected to the lead screw. The lead screw passes through the first rod and the second rod respectively. The end of the lead screw away from the rear pad rod is connected to the handle.

[0007] The rear support rod is used to brace against the rear support fork and rear fork in the bicycle frame, thus restricting their movement, preventing displacement, and ensuring that welding misalignment does not cause errors.

[0008] As a further improvement to the above solution, the rear fork hook rod, seat post lower hook rod, seat post upper hook rod, rear support fork hook rod one, rear support fork hook rod two, liner hook rod, and beam hook rod are all fitted with springs at their rear ends, and the ends of the rods are all connected to end plates. The force of the springs pushes each hook rod to the rear side, and the hooks at the front ends of each hook rod pull the various tubes of the frame against the pad rods, thus restricting their movement, preventing displacement, and ensuring that welding misalignment does not cause errors.

[0009] As a further improvement to the above solution, a front pad is provided on the front side of the lower and upper inclined rods, and a lead screw is symmetrically and rotatably connected on the front pad. The lead screw passes through and is threadedly connected to the lower and upper inclined rods respectively, and a handle is connected to the rear end of the lead screw.

[0010] The front support rod is used to abut against the beam tubes and liner tubes in the bicycle frame, thus restricting their movement, preventing displacement, and ensuring that welding misalignment does not cause errors.

[0011] As a further improvement to the above solution, the inner end of the shaft is connected to the lower side of the front facade of the column through a pad. Several stop bars are evenly distributed on the outer curved surface of the end of the pad near the shaft and located on the same vertical plane. The pad is used to support the shaft tube, so that there is a gap between it and the column, which facilitates welding, and the stop bars are used to abut shaft tubes of different specifications.

[0012] Compared with the prior art, this utility model has the following advantages: it has a simple structure, reasonable design, and novel and unique concept. Multiple hanging rods (rear fork hanging rod, seat post lower hanging rod, seat post upper hanging rod, rear support fork hanging rod one, rear support fork hanging rod two, liner hanging rod, and beam hanging rod) connected by the column support provide hanging support for each tube of the frame (rear fork hanging rod, seat post, rear support fork, beam tube, and liner tube). Springs on each hanging rod (rear fork hanging rod, seat post lower hanging rod, seat post upper hanging rod, rear support fork hanging rod one, rear support fork hanging rod two, liner hanging rod, and beam hanging rod) pull each tube to the rearward displacement to limit and stabilize each tube. In conjunction with the axle tube and fork tube mounted on the axle rod, it is convenient for welding and positioning. Furthermore, each component of the frame (seat post, beam tube, and liner tube) is fixed by the support rod, which facilitates welding of the axle tube and fork tube. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of the mounting frame of this utility model. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] like Figures 1 to 2As shown, a bicycle frame welding auxiliary fixture includes a frame base 1, on which a column 2 is vertically connected. A shaft 3 is connected to the lower front surface of the column 2. From bottom to top, a series of rods 5, 7, 11, and 13 are connected to one side of the column 2. The two sides of the rod 5 are connected to the rear fork hanger rod 4 at intervals and through. The inner and outer ends of the rod 7 are respectively connected to the seat post under-hook hanger rod 12 and the rear support fork hanger rod 6. The outer end of the rod 11 is connected to the rear support fork hanger. The outer ends of pole 2 (61) and pole 4 (13) are connected to the seat tube and the hanging rod 12. On the other side of the column 2, the lower inclined rod 15 and the upper inclined rod 17 are connected in a series of inclines from bottom to top and are spaced apart. The lower inclined rod 15 and the upper inclined rod 17 are respectively connected to the lining hanging rod 14 and the beam hanging rod 16 at intervals. A crossbar 22 is set on the column 2 between the lower inclined rod 15 and the upper inclined rod 17. The outer end of the crossbar 22 is connected to the base plate 21 at an incline. The base plate 21 is connected to the pad ring 20. The pad ring 20 is connected to the front fork seat 19.

[0017] As a further improvement to the above solution, a rear pad rod 8 is provided on the front side of the first rod 5. The rear pad rod 8 is symmetrically connected to the lead screw 9 on both sides and rotated. The lead screw 9 passes through the first rod 5 and the second rod 7 respectively. The end of the lead screw 9 away from the rear pad rod is connected to the handle 10.

[0018] The rear support rod 8 is used to abut against the rear support fork and rear fork in the bicycle frame, thereby restricting their movement, preventing displacement, and ensuring that welding misalignment does not cause errors.

[0019] As a further improvement to the above solution, the rear fork hook rod 4, seat post lower hook rod 12, seat post upper hook rod 12, rear support fork hook rod one 6, rear support fork hook rod two 61, liner hook rod 14, and beam hook rod 16 are all fitted with springs 23 at their rear ends, and their rod ends are all connected to end plates 24. The force of the springs 23 is used to push each hook rod to the rear side, and the hooks at the front end of each hook rod pull the tubes of the frame against the pad rods, thus restricting them, preventing displacement, and ensuring that welding misalignment will not cause errors.

[0020] As a further improvement to the above solution, a front pad rod 18 is provided on the front side of the lower inclined rod 15 and the upper inclined rod 17. The front pad rod 18 is symmetrically and rotatably connected to the lead screw 9. The lead screw 9 passes through and is threadedly connected to the lower inclined rod 15 and the upper inclined rod 17 respectively. The rear end of the lead screw 9 is connected to the handle 10.

[0021] The front pad rod 18 is used to abut against the beam tube and liner tube in the bicycle frame, thereby restricting their movement, preventing displacement, and ensuring that welding misalignment will not cause errors.

[0022] As a further improvement to the above solution, the inner end of the shaft 3 is connected to the lower side of the front facade of the column 2 through a pad 31. Several baffles 32 are evenly distributed on the outer curved surface of the end of the pad 31 that is close to the shaft 3 and located on the same vertical plane. The pad 31 is used to pad the shaft tube, so that there is a gap between it and the column 2, which facilitates welding, and the baffles 32 are used to abut shaft tubes of different specifications.

[0023] The working principle of a bicycle frame welding auxiliary tool: Multiple support rods (rear fork support rod 4, seatpost lower support rod 12, seatpost upper support rod 12, rear support fork support rod 16, rear support fork support rod 21, liner support rod 14, and beam support rod 16) connected by the upright 2 support the various tubes of the frame (rear fork E, seatpost B, rear support fork G, beam tube D, and liner tube C) for support. Springs 23 on the backrest rod 12, seat post backrest rod 12, rear support fork tie rod 1 6, rear support fork tie rod 2 61, liner tie rod 14, and beam tie rod 16 pull each tube rod to the rearward displacement to limit and stabilize each tube rod. In conjunction with the axle tube A mounted on the axle rod 3 and the fork tube E, it facilitates welding and positioning. Furthermore, each component of the frame (seat post B, beam tube D, liner tube C) is fixed by the support rod, which facilitates welding of axle tube A and fork tube E.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A welding auxiliary fixture for bicycle frames, comprising a frame base, characterized in that, A vertical column is connected to the frame base. A shaft is connected to the front surface of the lower end of the column. From bottom to top, rods 1, 2, 3, and 4 are connected to one side of the column. The rear fork hanger is connected to both sides of rod 1 at intervals and through. The two ends of rod 2 are respectively connected to the seat tube lower support hanger and the rear support fork hanger 1. The outer end of rod 3 is connected to the rear support fork hanger 2. The outer end of rod 4 is connected to the seat tube upper support hanger. From bottom to top, a lower inclined rod and an upper inclined rod are connected at intervals. Liner hangers and beam hangers are respectively connected at intervals on the lower inclined rod and the upper inclined rod. A horizontal bar is set on the column between the lower inclined rod and the upper inclined rod. The outer end of the horizontal bar is inclined to connect to the base plate. A pad ring is connected to the base plate. The front fork seat is connected to the pad ring.

2. The auxiliary tooling for welding bicycle frames according to claim 1, characterized in that, A rear pad rod is provided on the front side of the first rod. The two sides of the rear pad rod are symmetrically connected to lead screws and the lead screws pass through the first rod and the second rod respectively. The end of the lead screw away from the rear pad rod is connected to a handle.

3. The auxiliary tooling for welding bicycle frames according to claim 1, characterized in that, The rear ends of the rear fork hanger, seat post lower hanger, seat post upper hanger, rear support fork hanger one, rear support fork hanger two, liner hanger, and beam hanger are all fitted with springs, and the ends of the rods are all connected to end plates.

4. The auxiliary tooling for welding bicycle frames according to claim 1, characterized in that, The lower and upper inclined rods are provided with front pads, and the front pads are symmetrically and rotatably connected with lead screws. The lead screws pass through and are threadedly connected to the lower and upper inclined rods respectively, and the rear end of the lead screws is connected to a handle.

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