Frame tube locking device

Abstract

The utility model discloses a kind of frame pipe locking device, including sleeve, first pull rod, second pull rod and pressing plate, the side of sleeve is provided with horizontal through hole and longitudinal through hole, the side of sleeve forms two oppositely arranged first compression parts and two oppositely arranged second compression parts, the one end of pressing plate is equipped with first eccentric roller and second eccentric roller, first pull rod passes through two first compression parts, the one end of first pull rod is fixed with first pull rod seat, the other end of first pull rod is hinged with first eccentric roller, two first compression parts are clamped between first pull rod seat and first eccentric roller, second pull rod passes through two second compression parts, the one end of second pull rod is fixed with second pull rod seat, the other end of second pull rod is hinged with second eccentric roller, two second compression parts are clamped between second pull rod seat and second eccentric roller. The utility model can simultaneously fasten two pipe fittings, can reduce abrasion, improve locking performance and prolong service life.

Description

Technical Field

[0001] This utility model relates to a vehicle frame fixing device, and more particularly to a vehicle frame tube locking device. Background Technology

[0002] In the prior art, to facilitate the assembly of bicycle and scooter frames, clamping devices are often used to fix the frame components. For example, Chinese patent publication CN206634111U describes: "Including a handle 1, a screw 2, a washer 4, a handle anti-rotation washer 5, a clamp 6, and a nut 7, the handle head 1a of the handle 1 has a cam-shaped structure; the handle head 1a of the handle 1 is hinged to the tail of the screw 2 by a pin 3; the clamp 6 has a shaft hole 6a, and a protruding ring 6c is provided on the inner wall of the shaft hole 6a located at the upper end face of the clamp 6; the handle head 1a of the handle 1 is assembled with the washer 4, the handle anti-rotation washer 5, and the clamp 6 by the screw 2 and the nut 7." This type of structure uses a single clamp. When two tubes of the frame are connected, only the outer tube can be clamped and fixed, which is insufficient for tightening. At the same time, the screw used to achieve tension can rotate relative to the clamp, which causes frequent friction between the eccentric roller on the handle and the washer. When the handle is tightened, the eccentric roller is not aligned with the concave arc surface of the washer, which increases the wear on the eccentric roller and reduces the service life and locking performance of the clamping device. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a frame tube locking device that can simultaneously fasten two tubes, reduce wear, improve locking performance, and extend service life, in order to address the shortcomings of the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0005] A frame tube locking device includes a sleeve, a first pull rod, a second pull rod, and a pressure plate. The sleeve has a transverse through-hole and a longitudinal through-hole on one side, which intersect at a cross shape to form two opposing first pressing parts and two opposing second pressing parts on one side of the sleeve. One end of the pressure plate is provided with a first eccentric roller and a second eccentric roller. The first pull rod passes through the two first pressing parts, and one end of the first pull rod is fixed to a first pull rod seat. The other end of the first pull rod is hinged to the first eccentric roller. The two first pressing parts are sandwiched between the first pull rod seat and the first eccentric roller. The second pull rod passes through the two second pressing parts, and one end of the second pull rod is fixed to a second pull rod seat. The other end of the second pull rod is hinged to the second eccentric roller. The two second pressing parts are sandwiched between the second pull rod seat and the second eccentric roller. When the pressure plate is pressed against the side of the sleeve, the pressure applied by the first and second eccentric rollers causes the two first pressing parts and the two second pressing parts to tighten synchronously.

[0006] Preferably, the end of the first pull rod is provided with a first rotating shaft vertically, the eccentric position of the first eccentric roller is provided with a first shaft hole, the side of the first eccentric roller is provided with a first receiving groove, the first rotating shaft is provided in the first shaft hole and the two are rotatably engaged, and the end of the first pull rod is located in the first receiving groove.

[0007] Preferably, the end of the second pull rod is provided with a second rotating shaft vertically, the eccentric position of the second eccentric roller is provided with a second shaft hole, the side of the second eccentric roller is provided with a second receiving groove, the second rotating shaft is provided in the second shaft hole and the two are rotatably engaged, and the end of the second pull rod is located in the second receiving groove.

[0008] Preferably, one end of the pressure plate is provided with a first support arm and a second support arm, the first eccentric roller is located at the end of the first support arm, and the second eccentric roller is located at the end of the second support arm.

[0009] Preferably, a first abutment seat is sleeved on the first pull rod, the first abutment seat is embedded in the side of the first pressing part, and the end of the first abutment seat is provided with a first concave arc surface that abuts and cooperates with the first eccentric roller.

[0010] Preferably, the second pull rod is fitted with a second abutment seat, the second abutment seat is embedded in the side of the second pressing part, and the end of the second abutment seat is provided with a second concave arc surface that abuts and cooperates with the second eccentric roller.

[0011] Preferably, the inner sidewall of the sleeve protrudes to form an inner stepped ring.

[0012] Preferably, the first pull rod seat is screwed and fixed to one end of the first pull rod, and the second pull rod seat is screwed and fixed to one end of the second pull rod.

[0013] In the frame tube locking device disclosed in this utility model, the sleeve is fitted onto the connection between two tubes. One side of the sleeve has a cross-shaped transverse through-hole and a longitudinal through-hole. During installation, two first clamping parts clamp one tube, and two second clamping parts clamp the other tube. Since the pressure plate is an integral structure and can simultaneously apply force to two pull rods, when the user presses the pressure plate to bring it closer to the sleeve side, the first eccentric roller and the second eccentric roller simultaneously apply pressure, thereby driving the two first clamping parts and the two second clamping parts to synchronously clamp the two tubes. Compared to using a single clamp, this utility model has a stronger fixing ability for the two tubes. Furthermore, the first and second pull rods are restricted by the pressure plate and cannot rotate. The first and second eccentric rollers remain in a set position, thereby reducing wear on the first and second eccentric rollers. This not only improves the locking performance but also extends the service life of the locking device. Attached Figure Description

[0014] Figure 1 A 3D view of the frame tube locking device; Figure 2 Disassembly of the frame tube locking device Figure 1 ; Figure 3 Disassembly of the frame tube locking device Figure 2 ; Figure 4 This is a three-dimensional view of the sleeve. Detailed Implementation

[0015] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments.

[0016] This utility model discloses a frame tube locking device, combined with Figures 1 to 4As shown, it includes a sleeve 1, a first pull rod 2, a second pull rod 3, and a pressure plate 4. The sleeve 1 has a transverse through-hole 10 and a longitudinal through-hole 11 on one side, which intersect at a cross shape, forming two opposing first pressing parts 12 and two opposing second pressing parts 13 on one side of the sleeve 1. One end of the pressure plate 4 is provided with a first eccentric roller 40 and a second eccentric roller 41. The first pull rod 2 passes through the two first pressing parts 12. One end of the first pull rod 2 is fixed to a first pull rod seat 5, and the other end of the first pull rod 2 is hinged to the first eccentric roller 40. In a coordinated manner, two first pressing parts 12 are sandwiched between the first pull rod seat 5 and the first eccentric roller 40. The second pull rod 3 passes through the two second pressing parts 13. One end of the second pull rod 3 is fixed to the second pull rod seat 6, and the other end of the second pull rod 3 is hinged to the second eccentric roller 41. The two second pressing parts 13 are sandwiched between the second pull rod seat 6 and the second eccentric roller 41. When the pressure plate 4 is pressed against the side of the sleeve 1, the pressure applied by the first eccentric roller 40 and the second eccentric roller 41 drives the two first pressing parts 12 and the two second pressing parts 13 to tighten synchronously.

[0017] In the above structure, the sleeve 1 is fitted onto the connection between two pipe fittings. One side of the sleeve 1 has a cross-shaped transverse through-hole 10 and a longitudinal through-hole 11. During installation, two first clamping parts 12 clamp one pipe fitting, and two second clamping parts 13 clamp the other pipe fitting. Since the pressure plate 4 is an integral structure and can simultaneously apply force to both pull rods, when the user presses the pressure plate 4 to bring it closer to the side of the sleeve 1, the first eccentric roller 40 and the second eccentric roller 41 simultaneously apply pressure. This causes the two first clamping parts 12 and the two second clamping parts 13 to simultaneously clamp the two pipe fittings. Compared with the method of using a single clamp, the present invention has a stronger fixing ability for the two pipe fittings. On this basis, the first pull rod 2 and the second pull rod 3 are restricted by the pressure plate 4 and cannot rotate. The first eccentric roller 40 and the second eccentric roller 41 are kept in the set position, thereby reducing the wear on the first eccentric roller 40 and the second eccentric roller 41. This not only improves the locking performance, but also extends the service life of the locking device.

[0018] Regarding the preferred hinge relationship between the two tie rods and the two eccentric rollers, in this embodiment, the end of the first tie rod 2 is provided with a first rotating shaft 20 vertically, the eccentric position of the first eccentric roller 40 is provided with a first shaft hole 42, the side of the first eccentric roller 40 is provided with a first receiving groove 43, the first rotating shaft 20 is provided in the first shaft hole 42 and the two are rotatably engaged, and the end of the first tie rod 2 is located in the first receiving groove 43.

[0019] Correspondingly, the end of the second pull rod 3 is provided with a second rotating shaft 30 vertically, the eccentric position of the second eccentric roller 41 is provided with a second shaft hole 44, the side of the second eccentric roller 41 is provided with a second receiving groove 45, the second rotating shaft 30 is provided in the second shaft hole 44 and the two are rotatably engaged, and the end of the second pull rod 3 is located in the second receiving groove 45.

[0020] In addition, another alternative method can be used, such as placing the rotating shaft at the center of the eccentric roller, and forming an outwardly extending cam on one side of the eccentric roller. This structure can also achieve the function of driving and pressing.

[0021] In a preferred embodiment, one end of the pressure plate 4 is provided with a first support arm 46 and a second support arm 47, with the first eccentric roller 40 located at the end of the first support arm 46 and the second eccentric roller 41 located at the end of the second support arm 47. The first support arm 46 and the second support arm 47 increase the elasticity of the pressure plate 4, providing better spring feedback when the user moves the pressure plate 4.

[0022] In this embodiment, please refer to Figure 2 The first pull rod 2 is fitted with a first abutment seat 14, which is embedded in the side of the first pressing part 12. The end of the first abutment seat 14 is provided with a first concave arc surface 15 that abuts against the first eccentric roller 40.

[0023] Correspondingly, a second abutment seat 16 is sleeved on the second pull rod 3. The second abutment seat 16 is embedded in the side of the second pressing part 13. The end of the second abutment seat 16 is provided with a second concave arc surface 17 that abuts and cooperates with the second eccentric roller 41.

[0024] In the above structure, the first concave arc surface 15 and the second concave arc surface 17 are respectively abutted and adapted to the first eccentric roller 40 and the second eccentric roller 41. Since the first pull rod 2 and the second pull rod 3 are restricted by the pressure plate 4 and cannot rotate freely, the two eccentric rollers are aligned with the two concave arc surfaces respectively. This alignment relationship can effectively reduce the friction between the eccentric rollers and the concave arc surfaces, give full play to the locking performance, and extend the service life of the locking device.

[0025] As a preferred embodiment, the inner wall of the sleeve 1 protrudes to form an inner stepped ring 18. When the two pipe fittings are inserted together, the inner stepped ring 18 abuts against the edge of the outer pipe fitting, allowing the sleeve 1 to be installed in place.

[0026] For ease of assembly and tightness adjustment, the first pull rod seat 5 is screwed and fixed to one end of the first pull rod 2, and the second pull rod seat 6 is screwed and fixed to one end of the second pull rod 3.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. All modifications, equivalent substitutions or improvements made within the technical scope of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A locking device for a vehicle frame tube, characterized in that, The device includes a sleeve (1), a first pull rod (2), a second pull rod (3), and a pressure plate (4). One side of the sleeve (1) has a transverse through-hole (10) and a longitudinal through-hole (11), which intersect at a cross shape, forming two opposing first pressing parts (12) and two opposing second pressing parts (13) on one side of the sleeve (1). One end of the pressure plate (4) has a first eccentric roller (40) and a second eccentric roller (41). The first pull rod (2) passes through the two first pressing parts (12). One end of the first pull rod (2) is fixed with a first pull rod seat (5), and the other end of the first pull rod (2) is connected to the first eccentric roller (40). The two first pressing parts (12) are hinged together and sandwiched between the first pull rod seat (5) and the first eccentric roller (40). The second pull rod (3) passes through the two second pressing parts (13). One end of the second pull rod (3) is fixed with the second pull rod seat (6). The other end of the second pull rod (3) is hinged together with the second eccentric roller (41). The two second pressing parts (13) are sandwiched between the second pull rod seat (6) and the second eccentric roller (41). When the pressure plate (4) is pressed against the side of the sleeve (1), the two first pressing parts (12) and the two second pressing parts (13) are driven to tighten synchronously based on the pressure applied by the first eccentric roller (40) and the second eccentric roller (41).

2. The frame tube locking device as described in claim 1, characterized in that, The first pull rod (2) has a first rotating shaft (20) vertically at its end. The first eccentric roller (40) has a first shaft hole (42) at its eccentric position. The first eccentric roller (40) has a first receiving groove (43) on its side. The first rotating shaft (20) is located in the first shaft hole (42) and the two are rotatably engaged. The end of the first pull rod (2) is located in the first receiving groove (43).

3. The frame tube locking device as described in claim 1, characterized in that, The end of the second pull rod (3) is provided with a second rotating shaft (30) vertically, the second eccentric roller (41) is provided with a second shaft hole (44) at the eccentric position, the side of the second eccentric roller (41) is provided with a second receiving groove (45), the second rotating shaft (30) is provided in the second shaft hole (44) and the two are rotated together, and the end of the second pull rod (3) is located in the second receiving groove (45).

4. The frame tube locking device as described in claim 1, characterized in that, The pressure plate (4) has a first support arm (46) and a second support arm (47) at one end. The first eccentric roller (40) is located at the end of the first support arm (46), and the second eccentric roller (41) is located at the end of the second support arm (47).

5. The frame tube locking device as described in claim 1, characterized in that, The first pull rod (2) is fitted with a first abutment seat (14), which is embedded in the side of the first pressing part (12). The end of the first abutment seat (14) is provided with a first concave arc surface (15) that abuts against the first eccentric roller (40).

6. The frame tube locking device as described in claim 1, characterized in that, The second pull rod (3) is fitted with a second abutment seat (16), which is embedded in the side of the second pressing part (13). The end of the second abutment seat (16) is provided with a second concave arc surface (17) that abuts against the second eccentric roller (41).

7. The frame tube locking device as described in claim 1, characterized in that, The inner wall of the sleeve (1) protrudes to form an inner stepped ring (18).

8. The frame tube locking device as described in claim 1, characterized in that, The first pull rod seat (5) is screwed and fixed to one end of the first pull rod (2), and the second pull rod seat (6) is screwed and fixed to one end of the second pull rod (3).

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