High-frequency vibration testing device for bicycle frame front fork assembly

Abstract

The utility model belongs to the technical field of two-wheeled vehicle detection, and particularly relates to a bicycle frame front fork assembly high-frequency vibration testing device which comprises a bearing platform, a beam frame, a fixing plate and a fixing assembly, the beam frame is oppositely arranged on the bearing platform, the fixing plate is arranged on the beam frame, relatively slides on the beam frame and is used for fixedly holding a frame front fork, and the fixing assembly is arranged on the beam frame. The fixing plate is further provided with a fixing window, the head end and the tail end of the frame front fork are correspondingly arranged in the fixing window, the fixing assembly is arranged in the fixing plate, when the frame front fork is arranged at the corresponding position, the fixing assembly is pressed downwards to fix the frame front fork, and a rotary fixing screw is arranged at the top of the fixing assembly. The fixing screw rod is installed in the fixing plate in a threaded mode so that the fixing assembly can ascend or descend, the fixing window comprises a through inserting opening formed in the fixing plate, a cavity is further formed in the fixing plate, and the cavity is located above the inserting opening and communicates with the inserting opening. According to the utility model, dislocation, vacancy and the like are not easy to generate, and the detection accuracy is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of two-wheeled vehicle detection, and specifically relates to a high-frequency vibration test device for a bicycle frame front fork assembly. Background Art

[0002] The front fork of a bicycle frame is one of the key components in the bicycle structure. It not only supports the front wheel, but also directly affects the handling, stability and comfort of the bicycle. Bicycle front forks are mainly divided into two categories: suspension front forks and rigid front forks. Suspension front forks have a built-in shock absorption system that can effectively absorb road impact and provide a more comfortable riding experience, especially suitable for mountain riding or complex road conditions. Rigid front forks have a simple structure and are lighter in weight, suitable for urban riding or flat roads.

[0003] Before the front fork assembly is produced and shipped out of the factory, it needs to undergo various tests, including fatigue testing of the front fork assembly. Since the front fork assembly of a bicycle frame is the most vulnerable part to collision and damage during travel, durability and fatigue testing of the front fork assembly is essential. The fatigue resistance of its buffering energy absorption strength is also one of the important tests. The existing elastic fatigue testing platform requires temporary addition of components to fix the front fork, and when the front fork is reinforced, dislocation and voiding are prone to occur, which adversely affects the test data and reduces the test accuracy. Utility Model Content

[0004] The purpose of the utility model is to provide a high-frequency vibration testing device for a bicycle frame front fork assembly, which is not prone to dislocation or virtual position, and helps to improve the accuracy of detection.

[0005] The technical solutions adopted in this utility are as follows:

[0006] A high-frequency vibration testing device for a bicycle frame front fork assembly comprises a bearing platform, a beam frame, a fixing plate and a fixing assembly, wherein the beam frame is relatively arranged on the bearing platform, the fixing plate is arranged on the beam frame and relatively slides on the beam frame, and is used to fix the frame front fork, the fixing plate is also provided with a fixing window, the head and tail ends of the frame front fork are correspondingly arranged in the fixing window, the fixing assembly is arranged inside the fixing plate, when the frame front fork is placed in a corresponding position, the fixing assembly is pressed down to fix the frame front fork, a rotating fixing screw is arranged on the top of the fixing assembly, and the fixing screw is threadedly installed inside the fixing plate to make the fixing assembly rise or fall.

[0007] In a preferred embodiment, the fixed window includes a socket provided on the fixed plate and extending therethrough, and a chamber is provided inside the fixed plate, wherein the chamber is located above the socket and communicated with the socket.

[0008] In a preferred embodiment, the side walls on both sides of the socket are arranged to be inclined away from each other.

[0009] In a preferred embodiment, the fixing assembly includes a main body and a rubber sleeve, the bottom of which is hollow to form a deformation cavity, so that the bottom edge of the main body forms an elastically deformable pressure strip, and the rubber sleeve is sleeved on the outside of the main body.

[0010] In a preferred embodiment, the center of the bottom of the pressure strip is concave to form a concave surface, and two sides of the bottom of the pressure strip protrude from the concave surface to form a first convexity and a second convexity respectively.

[0011] In a preferred embodiment, the bottom surface of the second convexity protrudes beyond the bottom surface of the first convexity.

[0012] In a preferred solution, the fixing assembly and the fixing screw are arranged obliquely inside the fixing plate.

[0013] The technical effects achieved by this utility model are:

[0014] The utility model can fix two front forks with different cross-sections, and when the front fork is reinforced, the bottom surface of the pressure strip can fit and press the arc surface of the front fork, so that it is not easy to produce dislocation and virtual position during high-frequency vibration detection, which is helpful to improve the accuracy of detection, and the side walls on both sides of the socket are arranged to be inclined opposite to each other, which can meet the detection of front forks with different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the overall structure in this utility;

[0016] Figure 2 This is a practical Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle;

[0017] Figure 3 It is a structural schematic diagram of the fixed components in this utility;

[0018] Figure 4 This is a practical Figure 2 A schematic diagram of the structure of the partial horizontal view in the middle;

[0019] Figure 5 It is a schematic diagram of the cross-sectional plan view of the first embodiment of the present invention;

[0020] Figure 6 It is a schematic diagram of the cross-sectional plan view of the second embodiment of the present invention.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Load-bearing platform; 2. Beam frame; 3. Fixed plate;

[0023] 4. Fixed window; 401. Socket; 402. Chamber;

[0024] 5. Fixing assembly; 501. Main body; 502. Pressure strip; 503. Deformation cavity; 504. First convex surface; 505. Second convex surface; 506. Concave surface; 507. Rubber sleeve;

[0025] 6. Fix the screw. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention, so the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present utility. The phrase "in a preferred embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the present embodiment in detail, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0030] Please see attached Figure 1-6 As shown, the utility model provides a high-frequency vibration testing device for a bicycle frame front fork assembly, comprising a bearing platform 1, a beam frame 2, a fixing plate 3 and a fixing assembly 5. The beam frame 2 is relatively arranged on the bearing platform 1, and the fixing plate 3 is arranged on the beam frame 2 and slides relatively on the beam frame 2, and is used to fix the frame front fork. When it is necessary to detect the front fork assembly, by adjusting the distance between the two fixing plates 3, the front fork assemblies of different lengths and sizes can be detected on the bearing platform 1. A fixing window 4 is also arranged on the fixing plate 3, and the head and tail ends of the frame front fork are correspondingly arranged in the fixing window 4. The fixing assembly 5 is arranged inside the fixing plate 3. When the frame front fork is placed in a corresponding position, the fixing assembly 5 is pressed down to fix the frame front fork. A rotating fixing screw 6 is arranged on the top of the fixing assembly 5, wherein the fixing assembly 5 and the fixing screw 6 are rotationally fixedly connected, and the fixing screw 6 is threadedly installed inside the fixing plate 3. The fixing assembly 5 and the fixing screw 6 are tilted inside the fixing plate 3, so that the fixing assembly 5 rises or falls.

[0031] Please refer again Figure 2 The fixed window 4 includes a socket 401 that is opened on the fixed plate 3 and passes through. A chamber 402 is also opened inside the fixed plate 3. The chamber 402 is located above the socket 401 and is communicated with the socket 401. Furthermore, when placing the front fork assembly, the positions of the two legs and the head of the front fork assembly are placed correspondingly in the fixed window 4 on the corresponding fixed plate 3. By rotating the fixing screw 6, the fixing component 5 can move up and down in the chamber 402, thereby achieving the clamping or loosening of the front fork assembly.

[0032] Please refer again Figure 3 The fixing component 5 includes a main body 501 and a rubber sleeve 507, the bottom of which is hollow to form a deformation cavity 503, so that the bottom edge of the main body 501 forms an elastically deformable pressure strip 502, and the rubber sleeve 507 is sleeved on the outside of the main body 501. When the fixing component 5 is pressed down to hold the front fork assembly, the rubber sleeve 507 can increase the fixation of the front fork.

[0033] Please refer again Figure 3-4 The center of the bottom of the pressure strip 502 is concave to form a concave surface 506 , and the two sides of the bottom of the pressure strip 502 protrude from the concave surface 506 to form a first protrusion 504 and a second protrusion 505 , respectively. The bottom surface of the second protrusion 505 protrudes from the bottom surface of the first protrusion 504 .

[0034] Specifically, since the bottom of the main body 501 is hollow, the pressure strip 502 presses the front fork downward, which is bound to cause inward deformation. However, in the present application, the main body 501 is placed at an angle, and the bottom surface of the main body 501 matches the outer curvature of the front fork, and is set to an inner concave and two outer convex surfaces, which can better adapt and fix with the outer curved surfaces of front forks of different diameters. When the pressure strip 502 at the bottom edge of the main body 501 partially contacts the front fork assembly, the second convex 505 with a more protruding bottom surface first contacts the curved surface of the front fork, and then due to pressure, the bottom surface of the second convex 505 deforms and extends outward, and the concave surface 506 gradually fits with the curved surface of the front fork, and the second convex 505 is also tightly connected with the curved surface of the front fork, thereby completing the fixation of the front fork assembly.

[0035] It is worth noting that the side walls on both sides of the socket 401 are arranged to be inclined opposite to each other. When the head or leg of the front fork assembly is inserted into the fixing window 4, different necks of the front fork assembly can be fixed to test fatigue detection under high-frequency impact at different axis length stages.

[0036] Embodiment 1:

[0037] See also Figure 5 , when the cross section of the front fork is circular, the pressing state of the main body 501 on the front fork;

[0038] Embodiment 2:

[0039] See also Figure 6 , when the cross section of the front fork is elliptical, the compression state of the main body 501 on the front fork.

[0040] Combined with the above structure, the present application can fix two front forks with different cross-sections, and when reinforcing the front fork, the bottom surface of the pressure strip 502 can fit and press the curved surface of the front fork, so that it is not easy to produce dislocation or virtual position during high-frequency vibration detection, which helps to improve the accuracy of the detection, and the side walls on both sides of the socket 401 are arranged to be inclined opposite to each other, which can meet the detection of front forks of different diameters.

[0041] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A high-frequency vibration test device for a bicycle frame front fork assembly, characterized in that: include A carrying platform (1); and A beam frame (2), the beam frame (2) is relatively arranged on the bearing platform (1); A fixing plate (3) is arranged on the beam frame (2) and slides relatively on the beam frame (2) and is used to fix the front fork of the frame. The fixing plate (3) is also provided with a fixing window (4), and the front and rear ends of the front fork of the frame are correspondingly arranged in the fixing window (4); The fixing assembly (5) is arranged inside the fixing plate (3). When the front fork of the frame is placed at a corresponding position, the fixing assembly (5) is pressed down to fix the front fork of the frame. A rotating fixing screw (6) is arranged on the top of the fixing assembly (5). The fixing screw (6) is threadedly installed inside the fixing plate (3) so that the fixing assembly (5) can be raised or lowered.

2. A high-frequency vibration testing device for a bicycle frame front fork assembly according to claim 1, characterized in that: The fixed window (4) comprises a socket (401) formed on the fixed plate (3) and extending therethrough. A chamber (402) is also formed inside the fixed plate (3). The chamber (402) is located above the socket (401) and is in communication with the socket (401).

3. A high-frequency vibration testing device for a bicycle frame front fork assembly according to claim 2, characterized in that: The side walls on both sides of the socket (401) are arranged to be inclined opposite to each other.

4. A high-frequency vibration testing device for a bicycle frame front fork assembly according to claim 1, characterized in that: The fixing assembly (5) comprises: The main body (501) has a hollow bottom to form a deformation cavity (503), so that the bottom edge of the main body (501) forms a pressure strip (502) that can be elastically deformed; The rubber sleeve (507) is sleeved on the outside of the main body (501).

5. A high frequency vibration testing device for a bicycle frame front fork assembly according to claim 4, characterized in that: The center of the bottom of the pressure strip (502) is concave to form a concave surface (506), and two sides of the bottom of the pressure strip (502) protrude from the concave surface (506) to form a first convexity (504) and a second convexity (505), respectively.

6. A high-frequency vibration testing device for a bicycle frame front fork assembly according to claim 5, characterized in that: The bottom surface of the second protrusion (505) protrudes from the bottom surface of the first protrusion (504).

7. A high frequency vibration testing device for a bicycle frame front fork assembly according to claim 1, characterized in that: The fixing assembly (5) and the fixing screw (6) are arranged obliquely inside the fixing plate (3).

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