Vibration absorption type bicycle frame

Abstract

The utility model relates to the technical field of bicycle frames, and discloses a vibration absorption type bicycle frame which comprises a frame body, the frame body comprises a seat tube, a seat post and a damping assembly, the damping assembly comprises a hydraulic damper, a first spring and a second spring, one end of a piston rod of the hydraulic damper is connected with the seat post, and the other end of the piston rod of the hydraulic damper is connected with the second spring. One end of the first spring is connected with the seat post, the other end of the first spring is connected with the seat tube, the first spring is sleeved on the hydraulic damper, two ends of the first spring respectively abut against the seat post and the seat tube, a guide seat is sleeved at the upper end of the seat tube, a sleeve is arranged outside the hydraulic damper and the first spring, a guide groove is arranged in the sleeve, and the guide seat is inserted into the guide groove. One end of the spring II is connected with the guide seat, and the other end is connected with the guide groove. Through the arrangement of the damping assembly, when the seat tube is impacted to extrude the hydraulic damper and the first spring, the guide seat shares a part of external force under the buffering action of the second spring, and the damping effect is improved to the maximum extent.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle frames, in particular to a vibration absorbing bicycle frame. Background Art

[0002] In order to ensure the rigidity and impact resistance of the bicycle body, the bicycle frame is generally made of carbon steel or aluminum steel materials on the market, which is light, rigid and not easy to damage. However, in actual use, due to the unevenness of the road, the impact and vibration of the frame will be transmitted to the seat position, affecting the rider. The existing frame shock-absorbing structure is mostly set between the wheel and the frame, but this method does not have a significant shock-absorbing effect on the seat position. Utility Model Content

[0003] The purpose of the utility model is to provide a vibration-absorbing bicycle frame to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vibration-absorbing bicycle frame, comprising a frame body, the frame body comprising a seat tube, a seat rod and a shock-absorbing assembly arranged between the seat tube and the seat rod, the shock-absorbing assembly comprising a hydraulic damper, a spring 1 and a spring 2, one end of a piston rod of the hydraulic damper is connected to the seat rod, and the other end is connected to the seat tube, the spring is sleeved on the hydraulic damper, and the two ends of the spring 1 are also respectively against the seat rod and the seat tube, the upper end of the seat tube is sleeved with a guide seat, the hydraulic damper and the spring 1 are provided with a sleeve outside, a guide groove is provided in the sleeve, the guide seat is inserted into the guide groove, one end of the spring 2 is connected to the guide seat, and the other end is connected to the guide groove.

[0005] By setting up the shock absorbing assembly, an upward force is generated on the frame when the bicycle is traveling on a bumpy road. When the seat tube is impacted, the seat tube squeezes the hydraulic damper and spring 1, and at the same time the guide seat shares a part of the external force under the buffering action of spring 2, thereby maximizing the shock absorbing effect, further reducing the vibration amplitude of the seat cushion, reducing the impact of vibration shock on the rider, and improving riding comfort.

[0006] The following improvements are made in the present application: a connecting plate is provided between the seat rod and the hydraulic damper and spring one, a fixing assembly is provided between the connecting plate and the sleeve, the fixing assembly includes a groove one opened at the bottom end of the connecting plate, a plug plate arranged in the groove one, one end of the plug plate is connected to the inner wall of the groove one through spring three, and the other end is provided with a plug rod, the plug rod extends to the outside of the connecting plate, the top inner side of the sleeve is provided with a slot that matches the plug rod, and the inner wall of the slot is provided with a through hole that penetrates the sleeve. Press the plug rod, and the plug rod squeezes the plug plate to push the connecting plate into the top of the sleeve. During the pushing process, the plug rod abuts against the inner wall of the sleeve. When the plug plate enters the groove two, the plug rod just moves to the slot position. At this time, the plug rod loses the abutment and enters the slot, locking the position of the connecting plate, thereby achieving fixation between the connecting plate and the sleeve.

[0007] The following improvements are made in the present application: a card block is integrally formed on the plug board, a second groove is provided at the top of the sleeve, and a card slot matching the card block is provided on the side wall of the second groove. The card block and the card slot are matched to further lock the plug board.

[0008] The following improvement is made in the solution of the present application: a connecting rod is provided between the second spring and the guide seat, and the connecting rod is limited in the guide groove.

[0009] The following improvements are made in the present application: the connecting rod is arranged in a T-shaped structure, and the inner wall of the guide groove is symmetrically provided with positioning blocks for limiting the connecting rod. By providing the positioning blocks, the connecting rod is limited in the guide groove to prevent position deviation and affect the shock absorption effect.

[0010] The following improvements are made in the present application: the frame body also includes a head tube and a front fork upper tube inserted in the head tube, the inner wall of the head tube is provided with no less than two groups of elastic plastic bodies, and the front fork upper tube is provided with notches corresponding to the elastic plastic bodies. The elastic plastic body is used to absorb the vibration transmitted to the front fork upper tube by the front wheel, reduce the change range of the front of the vehicle, and further improve the stability of the overall frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 is a cross-sectional view of a shock absorbing assembly;

[0014] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0015] Figure 4 Schematic diagram of the connection between the head tube and the front fork upper tube.

[0016] In the figure: 1, seat tube; 2, seat post; 3, hydraulic damper; 31, spring 1; 32, spring 2; 33, guide seat; 34, sleeve; 35, guide groove; 36, connecting plate; 37, connecting rod; 38, positioning block; 4, groove 1; 41, plug plate; 42, spring 3; 43, plug rod; 44, slot; 441, through hole; 45, clamping block; 46, groove 2; 461, clamping slot; 5, head tube; 51, elastic plastic body; 6, front fork upper tube; 61, notch. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] Example

[0020] like Figure 1-2As shown, a vibration-absorbing bicycle frame includes a frame body consisting of a seat tube 1, a seat rod 2 and a shock-absorbing assembly, wherein the upper end of the seat tube 1 is sleeved with a guide seat 33, and the bottom end of the seat rod 2 is integrally formed with a connecting plate 36; the shock-absorbing assembly is arranged between the seat tube 1 and the seat rod 2, and includes a hydraulic damper 3, a spring 1 31 and a spring 2 32, one end of the piston rod of the hydraulic damper 3 is against the connecting plate 36, and the other end is fixedly connected to the connecting plate 36, the spring 1 31 is sleeved on the hydraulic damper 3, and the spring 1 31 is One end of the spring 32 is against the connecting plate 36, and the other end is against the seat tube 1; a sleeve 34 is provided outside the hydraulic damper 3 and the spring 1 31, and a guide groove 35 is provided in the sleeve 34, and the guide seat 33 is inserted into the guide groove 35. At the same time, one end of the spring 2 32 is connected to the guide seat 33, and the other end is connected to the guide groove 35. A connecting rod 37 is provided between the spring 2 32 and the guide seat 33. The connecting rod 37 is arranged in a T-shaped structure. The inner wall of the guide groove 35 is symmetrically provided with positioning blocks 38 for limiting the connecting rod 37.

[0021] like Figure 3 As shown, the fixing assembly includes a groove 4 opened at the bottom end of the connecting plate 36, and an inserting plate 41 is arranged in the groove 4. One end of the inserting plate 41 is connected to the inner wall of the groove 4 by a spring 3 42, and the other end is provided with an inserting rod 43. The inserting rod 43 extends to the outside of the connecting plate 36. The top inner side of the sleeve 34 is provided with a slot 44 matched with the inserting rod 43, and the inner wall of the slot 44 is provided with a through hole 441 that penetrates the sleeve 34. A card block 45 is integrally formed on the inserting plate 41, and a groove 2 46 is opened at the top of the sleeve 34. The side wall of the groove 2 46 is provided with a card slot 461 that matches the card block 45.

[0022] like Figure 4 As shown, the inner wall of the head tube 5 is provided with three groups of elastic plastic bodies 51, and the front fork upper tube 6 is provided with notches 61 corresponding to the elastic plastic bodies 51. The connection between the head tube 5 and the front fork upper tube 6 is achieved by arranging the elastic plastic body 51 between the head tube 5 and the front fork upper tube 6. Although there is a certain gap between the head tube 5 and the front fork upper tube 6 due to process differences such as thermal expansion and contraction, generally about 2 mm, the multi-directional elastic plastic body 51 can generate sufficient clamping force on the front fork upper tube 6, so that the center point of the front fork upper tube 6 is stabilized at the center point of the head tube 5.

Claims

1. A vibration-absorbing bicycle frame, comprising a frame body, characterized in that: The frame body comprises a seat tube (1), a seat rod (2) and a shock absorbing assembly arranged between the seat tube (1) and the seat rod (2); the shock absorbing assembly comprises a hydraulic damper (3), a spring 1 (31) and a spring 2 (32); one end of a piston rod of the hydraulic damper (3) is connected to the seat rod (2), and the other end is connected to the seat tube (1); the spring 1 (31) is sleeved on the hydraulic damper (3), and the two ends of the spring 1 (31) are also respectively abutted against the seat rod (2) and the seat tube (1); a guide seat (33) is sleeved on the upper end of the seat tube (1); a sleeve (34) is provided outside the hydraulic damper (3) and the spring 1 (31); a guide groove (35) is provided inside the sleeve (34); the guide seat (33) is inserted into the guide groove (35); one end of the spring 2 (32) is connected to the guide seat (33), and the other end is connected to the guide groove (35).

2. A vibration absorbing bicycle frame according to claim 1, characterized in that: A connecting plate (36) is provided between the seat rod (2) and the hydraulic damper (3) and the spring one (31); a fixing assembly is provided between the connecting plate (36) and the sleeve (34); the fixing assembly comprises a groove one (4) provided at the bottom end of the connecting plate (36); and a plug plate (41) provided in the groove one (4); one end of the plug plate (41) is connected to the inner wall of the groove one (4) through a spring three (42); and the other end is provided with a plug rod (43); the plug rod (43) extends to the outside of the connecting plate (36); a slot (44) matching with the plug rod (43) is provided at the top inner side of the sleeve (34); and a through hole (441) penetrating the sleeve (34) is provided on the inner wall of the slot (44).

3. A vibration absorbing bicycle frame according to claim 2, characterized in that: A clamping block (45) is integrally formed on the plug plate (41), a second groove (46) is provided at the top end of the sleeve (34), and a clamping groove (461) matching with the clamping block (45) is provided on the side wall of the second groove (46).

4. The vibration-absorbing bicycle frame according to claim 1, characterized in that: A connecting rod (37) is provided between the second spring (32) and the guide seat (33), and the connecting rod (37) is limited in the guide groove (35).

5. A vibration absorbing bicycle frame according to claim 4, characterized in that: The connecting rod (37) is arranged in a T-shaped structure, and the inner wall of the guide groove (35) is symmetrically provided with positioning blocks (38) for limiting the connecting rod (37).

6. The vibration absorbing bicycle frame according to claim 1, characterized in that: The frame body also includes a head tube (5) and a front fork upper tube (6) inserted into the head tube (5); the inner wall of the head tube (5) is provided with no less than two groups of elastic plastic bodies (51); and the front fork upper tube (6) is provided with notches (61) corresponding to the elastic plastic bodies (51).

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