Lower bridge piece of rear triangle of frame

Abstract

The utility model belongs to the technical field of bicycle frames, and particularly relates to a rear triangular lower bridge piece of a bicycle frame, which comprises a middle tube, a rear lower bridge piece is rotatably connected onto the middle tube, a rear upper fork is mounted and connected onto the rear lower bridge piece, a mounting groove and a sliding groove are arranged on the rear upper fork, a damping component is mounted in the mounting groove, and the damping component is mounted in the sliding groove. The bottom of the damping assembly is connected with the rear lower axle piece, and the protective cover and the rear upper fork are installed on the two sides of the installation groove, so that the shock absorber can be prevented from being damaged when being impacted in the riding process, dust can be prevented from entering the shock absorber in the riding process, the shock absorber is prevented from being polluted by the dust, and the service life of the shock absorber is prevented from being affected. The protective cover is in sliding connection with the mounting groove and the sliding groove, so that the protective cover can be moved to the inner cavity of the sliding groove when maintenance or inspection is needed, and the protective cover can be moved to the inner cavity of the mounting groove after maintenance or inspection is completed, and the maintenance and inspection efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of bicycle frame technology, specifically to a rear triangle lower bridge plate of a bicycle frame. Background Technology

[0002] The 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 elements of the bicycle, its skeleton and main body; other components are directly or indirectly mounted on the frame. The rear fork consists of two parts: the top fork and the bottom fork. The top fork, similar to the human shoulder blade, extends from the top of the seatpost to near the rear axle, its main function being to absorb ground vibrations and improve riding comfort. The bottom fork, designed like a calf muscle, is located below the chain, close to the rear wheel, responsible for accurately and efficiently transmitting the torque generated during pedaling to the rear wheel, while also bearing the important responsibility of absorbing road impacts.

[0003] There are two connection methods between the rear triangle lower bridge and the rear stay in the existing technology. One is a direct fixed connection, which is suitable for riding on flat roads, such as road riding. The other is a movable connection, where a shock absorber is installed at the connection point. This type of frame is used for riding on bumpier roads, such as mountain biking. Frames used for mountain biking are frequently subjected to collisions during riding, so their shock absorbers are easily damaged. In addition, the dust in mountain biking can easily contaminate the shock absorbers and affect their service life. Therefore, a new type of rear triangle lower bridge is needed to address these issues. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0005] In view of the problems existing in the current bicycle frame, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a rear triangle lower bridge plate for a bicycle frame. By installing protective covers and rear upper forks on both sides of the mounting slot, it can prevent damage to the shock absorber when it is impacted during riding, and can also prevent dust from entering the shock absorber during riding, thus preventing the shock absorber from being contaminated by dust and affecting its service life.

[0007] By sliding the protective cover into the mounting groove and the sliding groove, the protective cover can be moved into the inner cavity of the sliding groove when maintenance or inspection is required, and then moved back into the inner cavity of the mounting groove after maintenance or inspection is completed, which greatly improves the efficiency of maintenance and inspection.

[0008] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0009] A rear triangle lower bridge plate of a bicycle frame, comprising a center tube;

[0010] A rear lower bridge plate is rotatably connected to the middle tube, and a rear upper fork is installed on the rear lower bridge plate. The rear upper fork has an installation groove and a sliding groove. A shock-absorbing component is installed in the installation groove. The bottom of the shock-absorbing component is connected to the rear lower bridge plate, and the top of the shock-absorbing component is connected to the installation groove. A protective cover is installed on the outside of the installation groove.

[0011] As a preferred embodiment of the rear triangle lower axle plate of the vehicle frame described in this utility model, the rear lower axle plate is equipped with a connecting rod and has a hook fixing hole, and the connecting rod is rotatably connected to the bottom of the shock absorption assembly.

[0012] As a preferred embodiment of the rear triangle lower axle plate of the vehicle frame described in this utility model, the shock absorption assembly includes a lower bushing, a lower connecting rod connected to the lower bushing, and a shock absorber installed above the lower connecting rod.

[0013] As a preferred embodiment of the rear triangle lower axle plate of the vehicle frame described in this utility model, wherein: an upper connecting rod is connected above the shock absorber, an upper bushing is connected above the upper connecting rod, the upper bushing is connected to the axle, and a fixed plate and a movable plate are installed at both ends of the axle.

[0014] As a preferred embodiment of the rear triangle lower axle plate of the vehicle frame described in this utility model, the fixing plate is fixedly connected to the inner wall of the mounting groove, and a movable plate is installed at the other end of the shaft. The movable plate is fixedly connected to the mounting groove by screws.

[0015] In a preferred embodiment of the rear triangular lower axle plate of the vehicle frame described in this utility model, the lower bushing is rotatably connected to the connecting rod, and the upper bushing is rotatably connected to the axle.

[0016] As a preferred embodiment of the rear triangle lower bridge plate of the vehicle frame described in this utility model, the sliding groove is located above the mounting groove, and the protective cover is slidably connected to the mounting groove and the sliding groove.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. By installing protective covers and rear upper forks on both sides of the mounting groove, the shock absorber can be prevented from being damaged by impact during riding, and dust can be prevented from entering the shock absorber during riding, thus preventing the shock absorber from being contaminated by dust and affecting its service life.

[0018] 2. By sliding the protective cover into the mounting groove and the sliding groove, the protective cover can be moved into the inner cavity of the sliding groove when maintenance or inspection is required. After maintenance or inspection is completed, the protective cover can be moved back into the inner cavity of the mounting groove, which greatly improves the efficiency of maintenance and inspection. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the mounting groove of this utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of the rear lower bridge plate of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the shock absorption component of this utility model;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the rear upper fork of this utility model.

[0025] In the diagram: 100 middle tube, 110 rear lower bridge plate, 120 connecting rod, 130 hook fixing hole, 140 rear upper fork, 150 mounting groove, 160 sliding groove, 170 protective cover, 200 shock absorption assembly, 210 lower bushing, 220 lower connecting rod, 230 shock absorber, 240 upper connecting rod, 250 upper bushing, 260 shaft, 270 fixed plate, 280 movable plate. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0030] This utility model provides the following technical solution: a rear triangle lower bridge plate for a bicycle frame. During use, by installing protective covers and rear upper forks on both sides of the mounting groove, it can prevent damage to the shock absorber when it is impacted during riding, and can also prevent dust from entering the shock absorber during riding, thus preventing the shock absorber from being contaminated by dust and affecting its service life.

[0031] By sliding the protective cover into the mounting groove and the sliding groove, the protective cover can be moved into the inner cavity of the sliding groove when maintenance or inspection is required, and then moved back into the inner cavity of the mounting groove after maintenance or inspection is completed, which greatly improves the efficiency of maintenance and inspection.

[0032] Figures 1-5 The diagram shown is a structural schematic of the first embodiment of the rear triangle lower axle plate of the present invention. Please refer to [link / reference]. Figures 1-5 The main body of the rear triangle lower bridge plate of the frame in this embodiment includes a center tube 100.

[0033] A rear lower bridge plate 110 is rotatably connected to the middle tube 100. A rear upper fork 140 is installed and connected to the rear lower bridge plate 110. The rear upper fork 140 has a mounting groove 150 and a sliding groove 160. A shock absorber 200 is installed in the mounting groove 150. The bottom of the shock absorber 200 is connected to the rear lower bridge plate 110, and the top of the shock absorber 200 is connected to the mounting groove 150. A protective cover 170 is installed on the outside of the mounting groove 150.

[0034] A connecting rod 120 and a hook fixing hole 130 are installed on the rear lower bridge piece 110. The connecting rod 120 is rotatably connected to the bottom of the shock absorption assembly 200. The sliding groove 160 is located above the mounting groove 150, and the protective cover 170 is slidably connected to the mounting groove 150 and the sliding groove 160.

[0035] The center tube 100 is used to connect the lower rear bridge plate 110 and the upper rear fork 140. The lower rear bridge plate 110 is used to install the connecting rod 120 and to have a pawl fixing hole 130. The connecting rod 120 is used to rotatably connect with the shock absorber assembly 200. The pawl fixing hole 130 is used to fix the pawl with bolts when installing the pawl. The mounting groove 150 is used to support the shock absorber assembly 200 and to support the protective cover 170 for sliding. The sliding groove 160 is used to support the protective cover 170 when the shock absorber assembly 200 is being repaired or inspected. Since the shock absorber assembly 200 is located inside the mounting groove 150 and the mounting groove 150 is protected by the protective cover 170, the shock absorber assembly 200 is protected by the upper rear fork 140 and the protective cover 170 when it is impacted during riding, which can prevent damage from impact. When the shock absorber needs to be repaired or inspected, the protective cover 170 needs to be slid into the inner cavity of the sliding groove 160 to fully expose the mounting groove 150. Then, the movable plate 280 can be disassembled to remove the shock absorber 230, which facilitates the repair. After the repair and inspection are completed, the protective cover 170 can be slid back into the mounting groove 150, which greatly improves the efficiency of repair and inspection.

[0036] The shock absorption assembly 200 includes a lower bushing 210, a lower connecting rod 220 connected to the lower bushing 210, and a shock absorber 230 mounted above the lower connecting rod 220. An upper connecting rod 240 is connected above the shock absorber 230, and an upper bushing 250 is connected above the upper connecting rod 240. The upper bushing 250 is connected to a shaft 260, and a fixed plate 270 and a movable plate 280 are mounted at both ends of the shaft 260. The fixed plate 270 is fixedly connected to the inner wall of the mounting groove 150, and the movable plate 280 is mounted at the other end of the shaft 260, and is fixedly connected to the mounting groove 150 by screws. The lower bushing 210 is rotatably connected to the connecting rod 120, and the upper bushing 250 is rotatably connected to the shaft 260.

[0037] The shock absorber assembly 200 is used to reduce the vibration of the frame. The lower bushing 210 is used to rotatably connect with the connecting rod 120. When the rear lower axle 110 is vibrated, the vibration is transmitted to the shock absorber assembly 200 through the connecting rod 120, the lower bushing 210 and the lower connecting rod 220. The shock absorber 230 can reduce the vibration of the frame. The lower connecting rod 220 is used to connect the lower bushing 210 and the shock absorber 230. The upper connecting rod 240 is used to connect the upper bushing 250 and the shock absorber 230. The shaft 260 is used to connect the upper bushing 250 and the fixing plate 270. The fixing plate 270 is used to fix one end of the shaft 260, so that the shaft 260 is fixed in the inner cavity of the mounting groove 150. The movable plate 280 is used to fix the mounting groove 150 with screws to prevent the upper bushing 250 from slipping off the shaft 260, which would cause the upper end of the shock absorber 230 to move and cause the shock absorber 230 to malfunction.

[0038] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A rear triangle lower bridge plate for a vehicle frame, characterized in that: Including the central tube (100); A rear lower bridge plate (110) is rotatably connected to the middle tube (100). A rear upper fork (140) is installed on the rear lower bridge plate (110). The rear upper fork (140) has an installation groove (150) and a sliding groove (160). A shock absorber assembly (200) is installed in the installation groove (150). The bottom of the shock absorber assembly (200) is connected to the rear lower bridge plate (110), and the top of the shock absorber assembly (200) is connected to the installation groove (150). A protective cover (170) is installed on the outside of the installation groove (150).

2. The rear triangle lower bridge plate of a vehicle frame according to claim 1, characterized in that: The rear lower bridge piece (110) is equipped with a connecting rod (120) and has a hook fixing hole (130). The connecting rod (120) is rotatably connected to the bottom of the shock absorption assembly (200).

3. The rear triangle lower bridge plate of a vehicle frame according to claim 1, characterized in that: The damping assembly (200) includes a lower bushing (210), a lower connecting rod (220) is connected to the lower bushing (210), and a damper (230) is installed above the lower connecting rod (220).

4. The rear triangle lower bridge plate of a vehicle frame according to claim 3, characterized in that: The shock absorber (230) is connected to an upper connecting rod (240), and an upper bushing (250) is connected to the upper connecting rod (240). The upper bushing (250) is connected to a shaft (260), and a fixed plate (270) and a movable plate (280) are installed at both ends of the shaft (260).

5. The rear triangle lower bridge plate of a vehicle frame according to claim 4, characterized in that: The fixed plate (270) is fixedly connected to the inner wall of the mounting groove (150), and a movable plate (280) is installed at the other end of the shaft (260). The movable plate (280) is fixedly connected to the mounting groove (150) by screws.

6. The rear triangle lower bridge plate of a vehicle frame according to claim 4, characterized in that: The lower bushing (210) is rotatably connected to the connecting rod (120), and the upper bushing (250) is rotatably connected to the shaft (260).

7. The rear triangle lower bridge plate of a vehicle frame according to claim 1, characterized in that: The sliding groove (160) is located above the mounting groove (150), and the protective cover (170) is slidably connected to the mounting groove (150) and the sliding groove (160).

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