Motorcycle steering damper

Abstract

The present invention provides a motorcycle directional damper related to the technical field of motorcycle steering, which includes a hydraulic cylinder, a flow limiting valve and a connecting seat arranged in pairs; the connecting seat includes a frame connecting seat and a steering connecting seat respectively arranged on the frame and the steering structure; the fixed end and the free end of each hydraulic cylinder are respectively hinged to a group of the frame connecting seat and the steering connecting seat, and a through hole connecting the space inside the cylinder is provided at a position close to the fixed end of the two hydraulic cylinders, and the flow limiting valve is provided at the through hole, and the two flow limiting valves are connected through an oil pipe. The hydraulic cylinder used in the present invention has a simple structure and a small number of openings, with low processing difficulty and low production cost. An oil storage pot is used, and as long as the hydraulic oil in the oil storage pot is not completely leaked, the damping effect will not be affected, and the reliability is high. It is convenient and easy to operate for maintenance.

Description

Technical Field

[0001] The invention relates to the technical field of motorcycle steering, in particular to a motorcycle steering damper. Background Art

[0002] The steering damper is an important safety accessory for motorcycles. Its function is to increase the steering resistance of the front wheel steering structure when the front wheel of the motorcycle turns quickly or swings left and right uncontrollably due to external force or improper operation during driving, thereby avoiding falling to the greatest extent and improving the stability and safety of the motorcycle. The current problems of the steering damper mainly include complex structure, high production cost, poor reliability, and difficult maintenance, which need to be solved urgently. Summary of the invention

[0003] The purpose of the present invention is to provide a motorcycle directional damper to solve the problems of the existing damper such as complex structure and poor reliability.

[0004] The present invention is implemented as follows: a motorcycle directional damper, which includes a connecting seat and a hydraulic cylinder and a flow limiting valve arranged in pairs;

[0005] The connecting seat comprises a frame connecting seat and a steering connecting seat respectively arranged on the frame and the steering structure;

[0006] The fixed end and free end of each hydraulic cylinder are respectively hinged to the frame connecting seat and the steering connecting seat. A through hole connecting the space inside the cylinder is provided near the fixed end of each hydraulic cylinder. The flow limiting valve is provided at the through hole, and the two flow limiting valves are connected through an oil pipe.

[0007] Preferably, an oil storage pot is further provided, and the oil storage pot is arranged between the two flow limiting valves and is respectively connected to the two oil pipes connected to the flow limiting valves.

[0008] Preferably, the flow limiting valve comprises a housing, an adjusting oil passage and a one-way flow limiting oil passage are arranged in parallel inside the housing, a reducing section is arranged on the one-way flow limiting oil passage, and a one-way flow limiting valve core is arranged in the reducing section.

[0009] Preferably, the diameter-changing section includes a tapered section and a long straight section from front to back;

[0010] The one-way flow limiting valve core is provided with a limit pin, a conical head and a limit rod in sequence from front to back. The limit pin can abut against the side wall of the conical section, and the conical head can fit tightly on the conical wall of the conical section. The limit rod is passed through the long straight section, and a spring is provided on the outside of the limit rod.

[0011] Preferably, two ends of the spring abut against the conical head and the right side wall of the long straight section respectively.

[0012] Preferably, an adjusting hole communicating with the adjusting oil passage is provided at the upper portion of the housing, an internal thread is provided on the inner wall of the adjusting hole, and an adjusting knob threadably connected to the adjusting hole is also included.

[0013] Preferably, a connecting pipe communicating with the one-way flow limiting oil passage and the regulating oil passage is provided at the lower portion of the housing, and the connecting pipe is sealingly connected to a through hole on the hydraulic cylinder.

[0014] Preferably, hinged through holes are provided at both ends of the hydraulic cylinder.

[0015] Preferably, the steering structure is a component that can steer synchronously with the steering wheel of the motorcycle.

[0016] By adopting the above technical solution, 1. the hydraulic cylinder used in the present invention has a simple structure and a small number of openings, is easy to process and has a low production cost.

[0017] 2. The present invention uses an oil storage pot. When leakage occurs, the hydraulic oil in the oil storage pot will automatically flow into the hydraulic cylinder for replenishment to ensure that no air enters the oil circuit. As long as the hydraulic oil in the oil storage pot is not completely leaked, it will not affect the damping effect, and the reliability is high.

[0018] 3. Maintenance and repair are convenient and easy to operate.

[0019] ① The present invention uses an external flow limiting valve that is easy to disassemble and assemble, and the number of parts in the cylinder body is very small, thereby reducing the probability of disassembling the cylinder body.

[0020] ② When repairing or maintaining, you only need to add hydraulic oil to the oil reservoir after assembly and then turn the handlebars a few times to exhaust the air to ensure the damping effect. The traditional steering damper needs to be filled with hydraulic oil during the assembly process. If the operation is improper, it is easy to cause air to remain in the cylinder, thus affecting the damping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 is a schematic structural diagram of a steering structure of the present invention being a fork shoulder of a vehicle front fork;

[0023] Figure 2 The steering structure of the present invention is a schematic diagram of a standpipe structure of a vehicle front fork;

[0024] Figure 3 is a schematic diagram of the structure of the steering structure of the present invention as a vehicle handlebar;

[0025] Figure 4 yes Figure 3 A structural diagram of the hydraulic cylinder in reverse assembly state;

[0026] Figure 5 It is a structural schematic diagram of the oil storage pot of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the hydraulic cylinder of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the flow limiting valve of the present invention.

[0029] In the figure: 1—frame, 2—steering structure, 3—frame connecting seat, 4—steering connecting seat, 5—hydraulic cylinder, 6—through hole, 7—flow limiting valve, 71—housing, 72—adjusting oil channel, 73—one-way flow limiting oil channel, 74—tapered section, 75—long straight section, 76—limiting nail, 77—tapered head, 78—limiting rod, 79—spring, 8—oil pipe, 9—oil storage pot, 10—oil pipe interface, 11—connecting pipe, 12—adjusting hole, 13—adjusting knob, 14—hinged through hole. DETAILED DESCRIPTION

[0030] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] like Figure 1-Figure 7 As shown, the present invention provides a motorcycle directional damper, comprising a connecting seat and a hydraulic cylinder and a flow limiting valve arranged in pairs.

[0033] The connection seat includes a frame connection seat 3 and a steering connection seat 4 respectively arranged on the frame 1 and the steering structure 2. The steering structure 2 can be a handlebar or a fork crown or a seat tube of a front fork of a vehicle.

[0034] There are two hydraulic cylinders and two flow limiting valves, which are symmetrically arranged on both sides of the center line of the vehicle body. A hinged through hole 14 is arranged at both ends of the hydraulic cylinder 5. The fixed end and the free end of each hydraulic cylinder 5 are respectively hinged to the frame connecting seat 3 and the steering connecting seat 4. A through hole 6 connecting the space inside the cylinder is arranged near the fixed end of the two hydraulic cylinders 5. A flow limiting valve 7 is arranged at the through hole 6, and the two flow limiting valves 7 are connected through an oil pipe 8. When the vehicle turns, one hydraulic cylinder will be in a retracted state and the other hydraulic cylinder will be in an extended state. At this time, the hydraulic oil in the hydraulic cylinder in the retracted state will be pressurized and transported to the other hydraulic cylinder through the oil pipe. Furthermore, in order to facilitate the observation of the oil volume and timely replenishment, the present invention is also provided with an oil storage pot 9. The upper part of the oil storage pot 9 is provided with a cover, and the lower part is provided with two oil pipe interfaces 10. The oil storage pot 9 is arranged between the two flow limiting valves 7 and is respectively connected to the two flow limiting valves 7 through two oil pipes 8.

[0035] The flow limiting valve 7 of the present invention comprises a housing 71, inside which an adjusting oil passage 72 and a one-way flow limiting oil passage 73 are arranged in parallel, a variable diameter section is arranged on the one-way flow limiting oil passage 73, and a one-way flow limiting valve core is arranged in the variable diameter section. The variable diameter section comprises a tapered section 74 and a long straight section 75 from front to back. The one-way flow limiting valve core is provided with a limiting pin 76, a tapered head 77 and a limiting rod 78 from front to back, the limiting pin 76 can abut against the side wall of the tapered section 74, the tapered head 77 can fit tightly against the tapered wall of the tapered section 74, the limiting rod 78 is penetrated in the long straight section 75, and a spring 79 is arranged outside the limiting rod 78. The two ends of the spring 79 abut against the right side wall of the tapered head 77 and the long straight section 75, respectively.

[0036] Furthermore, a connecting pipe 11 connected to the one-way flow-limiting oil passage 73 is provided at the lower part of the housing 71, and the connecting pipe 11 is sealedly connected to the through hole 6 on the hydraulic cylinder 5. For example, an external thread can be provided on the outside of the connecting pipe 11, and an internal thread can be provided on the inner wall of the through hole 6, and the connecting pipe 11 is threadedly sealedly connected to the through hole 6. An adjusting hole 12 connected to the adjusting oil passage 72 is provided at the upper part of the housing 71, and an internal thread is provided on the inner wall of the adjusting hole 12, and an adjusting knob 13 threadedly connected to the adjusting hole 12 is also included, and screwing the adjusting knob 13 can drive it to move up and down, thereby changing the amount of oil flowing through the adjusting oil passage 72.

[0037] The working principle of the present invention is:

[0038] Under normal working conditions (normal and slow turning of the handlebars, for example, slowly turning the handlebars to the left), the steering connecting seat 4 pushes the rod of the left hydraulic cylinder 5 hinged thereto to retract backward, and the hydraulic oil in the left hydraulic cylinder 5 flows into the left flow limiting valve 7 through the through hole 6 under the action of pressure. The hydraulic oil simultaneously flows through the regulating oil channel 72 and the one-way flow limiting oil channel 73 in the left flow limiting valve 7 and then flows into the left oil pipe 8, and then flows into the oil storage pot 9 through the left oil pipe interface 10 (due to the slow flow rate of the hydraulic oil, the one-way flow limiting oil channel remains open, and the resistance of the hydraulic oil is small). At the same time, the steering connecting seat pulls the rod of the right hydraulic cylinder hinged with it forward, and negative pressure is formed in the hydraulic cylinder on the right. Under the action of negative pressure, the hydraulic oil in the oil storage pot flows into the right flow limiting valve through the oil pipe interface 10 and the oil pipe 8 on the right, and flows into the right hydraulic cylinder through the internal regulating oil channel, the one-way flow limiting oil channel and the connecting pipe. Due to the supporting effect of the limiting pin 76, the one-way flow limiting valve core cannot move to the left, the one-way flow limiting oil channel remains open, and the hydraulic oil resistance is small.

[0039] When you slowly turn the handlebar to the right, the working process is opposite to the above paragraph.

[0040] In an abnormal working state (the vehicle suddenly encounters a large external force causing the direction to deflect, for example, it is rapidly deflected to the left by the force), the steering connecting seat 4 pushes the rod of the left hydraulic cylinder 5 hinged thereto to retract backward, and the hydraulic oil in the left hydraulic cylinder 5 flows into the left limiting valve 7 through the through hole 6 under the action of pressure. The hydraulic oil simultaneously flows through the regulating oil channel 72 and the one-way limiting oil channel 73 in the left limiting valve 7 and then flows into the left oil pipe 8, and then flows into the oil storage pot 9 through the left oil pipe interface 10 (due to the fast flow rate of the hydraulic oil, the hydraulic oil flowing through the one-way limiting oil channel 73 pushes the one-way limiting valve core in the variable diameter section and compresses the spring 79 to move backward, the conical surface of the conical head 77 of the one-way limiting valve core abuts the conical surface of the conical section 74, the one-way limiting oil channel 73 is closed, and the hydraulic oil resistance increases rapidly). At the same time, the steering connecting seat pulls the rod of the right hydraulic cylinder hinged with it forward, and negative pressure is formed in the hydraulic cylinder on the right. Under the action of negative pressure, the hydraulic oil in the oil storage pot flows into the right flow limiting valve through the oil pipe interface 10 and the oil pipe 8 on the right, and flows into the right hydraulic cylinder through the internal regulating oil channel, the one-way flow limiting oil channel and the connecting pipe. Due to the supporting effect of the limiting pin 76, the one-way flow limiting valve core cannot move to the left, the one-way flow limiting oil channel remains open, and the hydraulic oil resistance is small.

[0041] When the handlebar is turned suddenly to the right, the working process is opposite to the above paragraph.

[0042] The present invention has the following three advantages:

[0043] 1 The hydraulic cylinder used in the present invention has a simple structure, a small number of openings, low processing difficulty and low production cost.

[0044] 2 The present invention uses an oil storage pot. When leakage occurs, the hydraulic oil in the oil storage pot will automatically flow into the hydraulic cylinder for replenishment to ensure that no air enters the oil circuit. As long as the hydraulic oil in the oil storage pot is not completely leaked, it will not affect the damping effect and has high reliability.

[0045] 3. Maintenance and repair are convenient and easy to operate.

[0046] ① The present invention uses an external flow limiting valve that is easy to disassemble and assemble, and the number of parts in the cylinder body is very small, thereby reducing the probability of disassembling the cylinder body.

[0047] ② When repairing or maintaining, you only need to add hydraulic oil to the oil reservoir after assembly and then turn the handlebars a few times to exhaust the air to ensure the damping effect. The traditional steering damper needs to be filled with hydraulic oil during the assembly process. If the operation is improper, it is easy to cause air to remain in the cylinder, thus affecting the damping effect.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A motorcycle directional damper, characterized in that: It includes a connecting seat, a hydraulic cylinder arranged in pairs, and a flow limiting valve arranged in pairs; The connecting seat comprises a frame connecting seat and a steering connecting seat respectively arranged on the frame and the steering structure; The fixed end and free end of each hydraulic cylinder are respectively hinged to the frame connection seat and the steering connection seat, and through holes communicating with the cylinder spaces are provided at positions near the fixed ends of the two hydraulic cylinders, and the flow limiting valves are provided at the through holes, and the two flow limiting valves are connected through an oil pipe; The flow limiting valve comprises a housing, an adjusting oil passage and a one-way flow limiting oil passage are arranged in parallel inside the housing, a reducing section is arranged on the one-way flow limiting oil passage, and a one-way flow limiting valve core is arranged in the reducing section; The diameter-changing section includes a tapered section and a long straight section from front to back; The one-way flow limiting valve core is provided with a limit pin, a conical head and a limit rod in sequence from front to back. The limit pin can abut against the side wall of the conical section, and the conical head can fit tightly on the conical wall of the conical section. The limit rod is passed through the long straight section, and a spring is provided on the outside of the limit rod.

2. A motorcycle directional damper according to claim 1, characterized in that: An oil storage pot is also provided, and the oil storage pot is arranged between the two flow limiting valves and is respectively connected with the two oil pipes connected with the flow limiting valves.

3. A motorcycle directional damper according to claim 1, characterized in that: The two ends of the spring are respectively in contact with the conical head and the right side wall of the long straight section.

4. A motorcycle directional damper according to claim 1, characterized in that: An adjusting hole communicating with the adjusting oil passage is arranged at the upper part of the housing, an internal thread is arranged on the inner wall of the adjusting hole, and an adjusting knob is also included which is threadedly connected with the adjusting hole.

5. A motorcycle directional damper according to claim 1, characterized in that: A connecting pipe communicating with the one-way flow limiting oil passage and the regulating oil passage is arranged at the lower part of the housing, and the connecting pipe is sealed and connected to the through hole on the hydraulic cylinder.

6. A motorcycle directional damper according to claim 1, characterized in that: Both ends of the hydraulic cylinder are provided with hinged through holes.

7. A motorcycle directional damper according to claim 1, characterized in that: The steering structure is a component that can steer synchronously with the steering wheel of the motorcycle.

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