A lower tube locking structure
By designing a locking structure for the lower pipe for mopeds, the combination of connecting seats, locking screws, sliders and wedge seats is used to solve the risk of breaking and disengagement between the motor seat and the lower pipe weld, and the effective reinforcement and connection stability of the motor seat and the lower pipe are achieved.
Patent Information
- Application Number
- CN202420330299.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-22
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-02-22
AI Technical Summary
There is a risk of breaking and disengagement between the motor seat of the moped and the lower pipe welded, and a reinforcement structure is needed to prevent disengagement.
A lower tube locking structure is designed, including a connecting seat, a locking screw, a first slider, a second slider and a wedge seat. Through the cooperation of these components, the connection reinforcement of the motor seat and the lower tube is achieved.
It effectively prevents the risk of breaking the motor seat and the lower pipe welding point due to breakage, ensuring the stability and safety of the connection.
Smart Images
Figure CN222698645U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of power-assisted bicycles, and in particular relates to a lower tube locking structure. Background Art
[0002] The motor mount and the lower tube of a power-assisted bicycle are usually connected by welding. Figure 1 The motor seat and down tube of the power-assisted bicycle are shown. Since there is a risk of breakage and separation at the welding point between the motor seat and the down tube of the power-assisted bicycle, a special structure needs to be set inside the motor seat and the down tube to play a role in reinforcement and anti-separation. Utility Model Content
[0003] The utility model aims to provide a lower tube locking structure, which aims to reinforce the motor seat and the lower tube through the structure to prevent the risk of the motor seat and the lower tube being separated due to breakage at the welding point.
[0004] In order to achieve the above purpose, the technical solution of the utility model is to design a lower tube locking structure for connecting and reinforcing the motor seat and the lower tube, including a connecting seat, a locking screw, a first slider, a second slider and a wedge seat.
[0005] The lower end of the connecting seat is a locking structure for locking the motor seat, and a screw hole is arranged in the center of the upper end of the connecting seat.
[0006] The inner sides of the first slider and the second slider form an inclined surface inclined from top to bottom. When the inner sides of the first slider and the second slider face each other and are placed side by side, a wedge-shaped groove is formed between the two sliders. The wedge seat is a wedge-shaped structure that is wide at the top and narrow at the bottom, and the lower end of the wedge seat can be inserted along the wedge groove between the two sliders. The wedge seat is provided with screw holes. The locking screws are screwed into the screw holes of the connecting seat and the wedge seat in turn, and the wedge seat is moved toward the connecting seat by tightening the locking screws, and the first slider and the second slider located on both sides of the wedge seat are horizontally pushed through the side surfaces of the wedge seat.
[0007] Furthermore, outer sides of the first sliding block and the second sliding block are arc surfaces for resisting against the inner wall of the lower tube.
[0008] Furthermore, the lower tube locking structure also includes a guide pin, and the first slider and the second slider are provided with a guide hole parallel to the connecting seat, and the guide pin is inserted into the guide hole.
[0009] Furthermore, the first slider and the second slider each have two guide holes, each have two guide pins, and the front and rear sides of the wedge-shaped seat are located inside the two guide pins.
[0010] Furthermore, a limiting structure is provided at one end of the guide pin.
[0011] The advantages and beneficial effects of the utility model are that the lower tube locking structure of the utility model can realize the reinforcement of the connection between the motor seat and the lower tube, ensuring that after the motor seat and the lower tube are welded, when the welding joint breaks, there is no risk of direct separation between the motor seat and the lower tube. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the structure of the motor mount and down tube of the power-assisted bicycle.
[0013] Figure 2 It is a schematic diagram of the motor mount, down tube and down tube locking structure of the power-assisted bicycle.
[0014] Figure 3 Schematic diagram of the lower tube locking structure.
[0015] Figure 4 This is an exploded view of the lower tube locking structure.
[0016] Among them, there are a motor seat A, a lower tube B, a lower tube locking structure C, a connecting seat 1, a locking screw 2, a first slider 3, a second slider 4, a guide pin 5, and a wedge seat 6. DETAILED DESCRIPTION
[0017] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention. Example
[0018] like Figure 3 , Figure 4 As shown, a lower tube locking structure includes a connecting seat 1, a locking screw 2, a first slider 3, a second slider 4, a guide pin 5, and a wedge seat 6.
[0019] The lower end of the connecting seat 1 is a locking structure for locking the motor seat A, and a screw hole is provided in the center of the upper end of the connecting seat 1; the outer sides of the first slider 3 and the second slider 4 are arc surfaces for resisting the inner wall of the lower tube B, and the inner sides of the first slider 3 and the second slider 4 form an inclined surface inclined from top to bottom, so that the inner sides of the first slider 3 and the second slider 4 face each other, and when placed side by side, a wedge-shaped groove is formed between the two sliders; the wedge seat 6 is a wedge-shaped structure that is wide at the top and narrow at the bottom, and the lower end of the wedge seat 6 is inserted along the wedge groove between the two sliders; a screw hole is provided on the wedge seat 6; the locking screw 2 is screwed into the screw holes of the connecting seat 1 and the wedge seat 6 in turn, and the wedge seat 6 is moved toward the connecting seat 1 by tightening the locking screw 2, and the first slider 3 and the second slider 4 located on both sides of the wedge seat 6 are horizontally pushed through the side surfaces of the two sides of the wedge seat 6; a guide hole parallel to the connecting seat 1 is provided on the first slider 3 and the second slider 4; a guide pin 5 is inserted into the guide hole, so that the first slider 3 and the second slider 4 can only move along the direction of the guide pin 5.
[0020] The first slider 3 and the second slider 4 are respectively provided with two guide holes, and each has two guide pins 5. The front and rear sides of the wedge-shaped seat 6 should be located inside the two guide pins 5 to ensure that the wedge-shaped seat 6 can avoid the guide pins 5 when moving.
[0021] A limiting structure is provided at one end of the guide pin 5 to ensure that the guide pin 5 can only be disengaged from one end of the guide hole.
[0022] like Figure 1 As shown in FIG. 1 , the schematic diagram of the structure of the motor seat and the lower tube of the power-assisted bicycle, one end of the motor seat A is welded to one end of the lower tube B. Before welding, Figure 2 As shown in the figure, the motor seat, lower tube and lower tube locking structure of the power-assisted bicycle are schematically shown. The connecting seat 1 of the lower tube locking structure C is clamped or screwed onto the motor seat A, and the first slider 3, the second slider 4 and the wedge-shaped seat 6 of the lower tube locking structure C are placed into the lower tube B, and the locking screw 2 is screwed to move the wedge-shaped seat 6 toward the connecting seat 1. At the same time, the first slider 3 and the second slider 4 are spread out to both sides and tightly pressed against the inner wall of the lower tube B, thus completing the connection and reinforcement between the motor seat A and the lower tube B.
[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A lower tube locking structure, used to connect and reinforce a motor mount and a lower tube, characterized in that: It includes a connecting seat, a locking screw, a first slider, a second slider and a wedge-shaped seat; the lower end of the connecting seat is a locking structure for locking the motor seat, and a screw hole is provided in the center of the upper end of the connecting seat; the inner sides of the first slider and the second slider form an inclined surface inclined from top to bottom, and when the inner sides of the first slider and the second slider face each other and are placed side by side, a wedge-shaped groove is formed between the two sliders; the wedge seat is a wedge-shaped body structure that is wide at the top and narrow at the bottom, and the lower end of the wedge seat can be inserted along the wedge groove between the two sliders; a screw hole is provided on the wedge seat; the locking screw is screwed into the screw holes of the connecting seat and the wedge seat in turn, and the wedge seat is moved toward the connecting seat by tightening the locking screw, and the first slider and the second slider located on both sides of the wedge seat are horizontally pushed through the side surfaces of the wedge seat.
2. A lower tube locking structure according to claim 1, characterized in that: The outer sides of the first sliding block and the second sliding block are arc surfaces for abutting against the inner wall of the lower tube.
3. A lower tube locking structure according to claim 1, characterized in that: It also includes a guide pin; the first slider and the second slider are provided with a guide hole parallel to the connecting seat; the guide pin is inserted into the guide hole.
4. A lower tube locking structure according to claim 3, characterized in that: The first sliding block and the second sliding block have two guide holes and two guide pins respectively, and the front and rear sides of the wedge-shaped seat are located inside the two guide pins.
5. The lower tube locking structure according to claim 3, characterized in that: A limiting structure is provided at one end of the guide pin.