Improved structure of connecting rod shock-proof seat tube
By introducing a combined structure of connecting rod and cushioning components on the bicycle seat tube, the problem of poor cushioning of the shock absorber seat tube under front and rear force is solved, smooth shock absorber effect and seat cushion stability are achieved, and riding comfort is improved.
Patent Information
- Application Number
- CN202422742931.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-11-12
AI Technical Summary
The existing bicycle shock absorber seat tube has poor buffering effect under the influence of the front and rear directions, and the gap between the inner and outer tubes increases after long-term use, causing the seat cushion to shake, affecting riding comfort.
The structural design of seat tube, main bracket, connecting seat, first and second connecting rods, buffer assembly and pressing assembly is adopted. The combination of compression spring and limiting connecting rod is used to limit the axial movement of the inner tube, ensuring the smooth operation of the buffer assembly and avoiding friction and shaking.
Provides good cushioning and shock absorption, reduces seat cushion shaking, improves riding comfort, ensures that the cushioning assembly does not generate friction resistance when moving up and down axially, and maintains smooth shock absorption.
Smart Images
Figure CN223290991U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an improved structure of a connecting rod shock-absorbing seat tube, which is mainly used in the technical field of bicycles. Background Art
[0002] Bicycles are a commonly used means of transportation. They are powered by human power and do not require electricity or gasoline. They are very environmentally friendly and are very suitable for use as a general means of transportation or a leisure sports device.
[0003] In today's environment, there are many roads that are not completely flat. When riding a bicycle, users may encounter rugged and uneven roads, or when climbing on stone roads or roads with different elevation differences. The bicycle will vibrate due to the uneven ground. To solve this problem, most bicycles are equipped with shock absorbers to absorb the vibration force, making the user feel more comfortable when riding.
[0004] Suspension devices are usually installed on the handlebars, front fork, rear fork, and seat tube below the saddle of a bicycle. Current suspension seat tubes consist of an inner tube, an outer tube, and a spring. The top of the inner tube is connected to the saddle; the outer tube is sleeved with the inner tube, and the bottom of the outer tube is connected to the bicycle body. The spring passes through the outer tube, with its ends resting against the inner tube and the outer tube respectively, thereby providing a cushioning force to the inner tube. A slight gap is provided between the outer tube and the inner tube, which allows the outer tube to limit the axial movement of the inner tube and reduce friction between the two.
[0005] However, the vibrations generated by a bicycle when it is running are not all axial forces, and some components of force in the front-to-back direction are inevitable. This component of force may cause the inner tube to press against the outer tube, and the friction resistance between the inner and outer tubes will result in poor cushioning and shock absorption effect. In addition, after long-term use, the tube wall will be worn, and the gap between the inner and outer tubes will increase, which will make the outer tube unable to effectively limit the axial movement of the inner tube, and the inner tube may rock back and forth in the outer tube. When there is no cushioning and shock absorption, it may cause the seat cushion to rock, which needs further improvement. Utility Model Content
[0006] The technical problem to be solved by the present invention is to provide an improved structure of a connecting rod shock-absorbing seat tube, which provides good and smooth buffering and shock-absorbing effects, and can effectively reduce the shaking of the seat cushion, so that the user can be more comfortable when riding a bicycle, thereby overcoming the shortcomings of the existing technology.
[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: an improved structure of a connecting rod shock-absorbing seat tube, which at least comprises: a seat tube, a main bracket, a connecting seat, at least one first connecting rod, at least one second connecting rod, a buffer assembly and a pressing assembly; the seat tube has a tube body; the main bracket is sleeved on the seat tube, the main bracket has a through hole, and the through hole is communicated with the tube body; the connecting seat is used to pivotally connect the seat cushion of the bicycle; at least one first connecting rod is located at the front end of the seat tube and is pivotally connected to the between the main bracket and the connecting seat; at least one second connecting rod, which is located at the rear end of the seat tube and is pivotally connected between the main bracket and the connecting seat; the buffer component, which is arranged in the through-hole, and the upper end of the buffer component protrudes from the through-hole and is located between the first and second connecting rods; the pressing component, which is located between the first connecting rod and the buffer component, and the pressing component has a main body, one end of the main body is pivotally connected to the first connecting rod by a pivot portion, and the other end of the main body has at least one pressing portion that normally contacts the upper end of the buffer component.
[0008] Preferably, the buffer assembly includes a core rod, a compression spring and a lower stopper, the upper end of the core rod is exposed from the through hole, the lower stopper is fixed in the tube body, the compression spring is arranged between the core rod and the lower stopper, and the pressing portion is normally in contact with the upper end of the core rod.
[0009] Preferably, the pressing portion forms normal contact with the upper end of the core rod via at least one arc surface.
[0010] Preferably, the main body has a pressing portion, and the pressing portion is formed with a concave arc surface concave toward the main body, and the upper end of the core rod is provided with an arc body, and the pressing portion contacts the circumferential surface of the arc body in the normal state of the concave arc surface.
[0011] Preferably, the arc body axis is arranged at the upper end of the core rod.
[0012] Preferably, the main body has two pressing parts, and the pressing parts are respectively configured as roller structures, and the upper end of the core rod is provided with an arc body, and the pressing parts are in contact with the circumferential surface of the arc body in the normal state of the roller structure.
[0013] Preferably, the arc body axis is arranged at the upper end of the core rod.
[0014] Preferably, the connecting seat has an upper pivot end and a lower pivot end, the upper end of the at least one first connecting rod is pivoted to the upper pivot end, and the upper end of the at least one second connecting rod is pivoted to the lower pivot end; the main bracket has an upper end and a lower end, the lower end of the at least one first connecting rod is pivoted to the upper end of the main bracket, and the lower end of the at least one second connecting rod is pivoted to the lower end of the main bracket.
[0015] Preferably, the at least one first connecting rod and the at least one second connecting rod are respectively connected to the main bracket and the connecting seat through a shaft, and the first connecting rod and the second connecting rod can movably rotate relative to the main bracket and the connecting seat through the shaft as the axis.
[0016] Preferably, bearings are further provided, and the bearings are respectively arranged on both sides of the shaft passing through the main bracket and on both sides of the shaft passing through the connecting seat.
[0017] The beneficial effect of the present invention is as follows: through the display of the aforementioned technical means, when a rider travels on a bumpy road, the bicycle will vibrate up and down, and the rider's own weight will pass through the seat and the first connecting rod and press down the buffer assembly through the pressing portion, thereby causing the core rod to move downward and press down the compression spring. The elastic force of the compression spring is used to offset and slow down the vibration, thereby achieving a shock-absorbing effect. Since the seat tube and the connecting seat are connected by the first and second connecting rods, and the first and second connecting rods can only rotate upward or downward, whether it is the downward force of gravity or the component force in the front-back direction, the connecting seat will rotate upward or downward relative to the seat tube. Moreover, the pressing portion presses against the upper end of the buffer assembly to ensure that the core rod is restricted to vertical vertical movement in the axial direction of the through hole, thereby preventing friction between the seat tube and the buffer assembly and generating resistance, thereby making the buffering and shock absorption smoother. In addition, since the buffer assembly is restricted to axial movement and the core rod abuts against the compression spring in the axial direction, any movement of the core rod can be effectively prevented when the buffering and shock absorption is not in progress, and the first and second connecting rods, together with the connecting seat and the seat cushion, will not easily shake.
[0018] The present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a structural stereogram of the first embodiment of the improved connecting rod shock-absorbing seat tube structure of this invention.
[0020] Figure 2 This is a structural diagram of the first embodiment of the improved connecting rod shock-absorbing seat tube structure of the present invention.
[0021] Figure 3 This is an enlarged schematic diagram of the structure of the first embodiment of the improved connecting rod shock-absorbing seat tube structure of this invention.
[0022] Figure 4 This is a structural stereogram of the second embodiment of the improved connecting rod shock-absorbing seat tube structure of this invention.
[0023] Figure 5 This is an enlarged schematic diagram of the structure of the second embodiment of the improved connecting rod shock-absorbing seat tube structure of this invention. DETAILED DESCRIPTION
[0024] This invention creates an improved structure of the connecting rod shock absorber seat tube, such as Figure 1 and Figure 2 As shown, it at least includes: a seat tube 10, a main bracket 20, a connecting seat 30, at least one first connecting rod 40, at least one second connecting rod 50, a buffer component 60 and a pressing component 70.
[0025] The seat tube 10 has a tubular body 11. The main bracket 20 is sleeved on the tubular body 11 of the seat tube 10 and has a through-hole 21 that communicates with the tubular body 11. The main bracket 20 has an upper end 22 and a lower end 23 at the portion exposed from the tubular body 11. Both the upper end 22 and the lower end 23 have through-holes.
[0026] The connecting base 30 is used to pivotally connect to a bicycle saddle (not shown). The connecting base 30 includes a seat rail clamping portion 31 and a pivoting portion 32. The seat rail clamping portion 31 is located above the pivoting portion 32 and is used to clamp a set of seat rails. The pivoting portion 32 of the connecting base 30 has an upper pivoting end 321 and a lower pivoting end 322, both of which have through-holes.
[0027] The first link 40 is located at the front end of the seat tube 10 and is pivotally connected between the main bracket 20 and the connecting base 30; the second link 50 is located at the rear end of the seat tube 10 and is pivotally connected between the main bracket 20 and the connecting base 30; wherein the upper end of the first link 40 is pivotally connected to the upper pivot end 321, the upper end of the second link 50 is pivotally connected to the lower pivot end 322, the lower end of the first link 40 is pivotally connected to the upper end 22 of the main bracket 20, and the lower end of the second link 50 is pivotally connected to the lower end 23 of the main bracket 20; please also refer to Figure 3 As shown, the first and second connecting rods 40 and 50 are respectively passed through the through holes through the shaft 71 to connect the main bracket 20 and the connecting seat 30. There are also bearings (not shown) respectively arranged on both sides of the shaft 71 passing through the main bracket 20, and respectively arranged on both sides of the shaft 71 passing through the connecting seat 30, so that the first and second connecting rods 40 and 50 can be movably rotated relative to the main bracket 20 and the connecting seat 30 through the shaft 71 as the axis.
[0028] The buffer assembly 60 is disposed in the through hole 21. The upper end of the buffer assembly 60 protrudes from the through hole 21 and is located between the first connecting rod 40 and the second connecting rod 50. The buffer assembly 60 is connected to the first connecting rod 40 to provide a buffering force to the connecting seat 30 to achieve a shock-absorbing effect. Figure 1 、 Figure 2 and Figure 3As shown, the buffer assembly 60 includes a core rod 61, a compression spring 62 and a lower stopper 63. The core rod 61 is vertically movable up and down in the through hole 21, and the upper end of the core rod 61 protrudes from the through hole 21 and is located between the first connecting rod 40 and the second connecting rod 50. The lower stopper 63 is fixed in the tube body 11, and the compression spring 62 is disposed between the core rod 61 and the lower stopper 63.
[0029] The pressing component 80 is located between the first connecting rod 40 and the buffer component 60. The pressing component 80 has a body 81. One end of the body 81 is pivotally connected to the first connecting rod 40 by a pivoting portion 82, and the other end of the body 81 has at least one pressing portion 83 that is in normal contact with the upper end of the buffer component 60. The pressing portion 83 and the upper end of the core rod 61 of the buffer component 60 form a normal contact with at least one arc surface, which can ensure that the pressing portion 83 contacts and applies pressure to the upper end of the core rod 61. Figures 1 to 3 In the first embodiment shown, the main body 81 has a pressing portion 83, and the pressing portion 83 forms a concave arc surface 831 concave toward the inside of the main body 81, and the upper end of the core rod 61 is provided with an arc body 64, and the pressing portion 83 is in normal contact with the circumferential surface of the arc body 64 with the concave arc surface 831; of course, the arc body 64 can also be axially arranged on the upper end of the core rod 61 to form a rotatable form.
[0030] Furthermore, if Figure 4 and Figure 5 In the second embodiment shown, the main body 81 has two pressing portions 83, and the two pressing portions 83 are respectively configured as roller structures 832, and the upper end of the core rod 61 is provided with an arc body 64, and the pressing portion 83 is in normal contact with the circumferential surface of the arc body 64 with the roller structure 832; of course, the arc body 64 can also be axially arranged at the upper end of the core rod 61 to form a rotatable form.
[0031] Therefore, when the rider travels on a bumpy road, the bicycle will vibrate up and down. The rider's own weight will pass through the seat and the first connecting rod 40 and press down the buffer assembly 60 through the pressing portion 83, thereby causing the core rod 61 to move downward and press down the compression spring 62. The elastic force of the compression spring 62 is used to offset and reduce the vibration, thereby achieving a shock-absorbing effect. Since the seat tube 10 and the connecting base 30 are connected by the first and second connecting rods 40 and 50, and these first and second connecting rods 40 and 50 can only rotate upward or downward, whether it is the downward force of gravity or the front-to-back force, the connecting base 30 will rotate upward or downward relative to the seat tube 10. The pressing portion 83 presses against the upper end of the buffer assembly 60, thereby ensuring that the core rod 61 is restricted to vertical movement in the axial direction of the through hole 21, thereby preventing friction between the seat tube 10 and the buffer assembly 60 and generating resistance, thereby ensuring smoother shock absorption. In addition, since the buffer assembly 60 is restricted to axial movement and the core rod 61 abuts against the compression spring 62 in the axial direction, any movement of the core rod 61 can be effectively prevented when shock absorption is not being applied. As a result, the first and second connecting rods 40 and 50, together with the connecting base 30 and the seat cushion, will not easily shake.
Claims
1. An improved connecting rod suspension seatpost structure, comprising at least: a seatpost, a main bracket, a connecting seat, at least one first connecting rod, at least one second connecting rod, a buffer assembly, and a pressing assembly; characterized in that: The seat tube has a tube body; the main bracket is sleeved on the seat tube, and the main bracket has a through-hole, which is communicated with the tube body; the connecting seat is used to pivotally connect the bicycle seat; at least one first connecting rod is located at the front end of the seat tube and is pivotally connected between the main bracket and the connecting seat; at least one second connecting rod is located at the rear end of the seat tube and is pivotally connected between the main bracket and the connecting seat; the buffer assembly is arranged in the through-hole, and the upper end of the buffer assembly protrudes from the through-hole and is located between the first and second connecting rods; the pressing assembly is located between the first connecting rod and the buffer assembly, and the pressing assembly has a main body, one end of the main body is pivotally connected to the first connecting rod by a pivoting portion, and the other end of the main body has at least one pressing portion that normally contacts the upper end of the buffer assembly.
2. The improved connecting rod shock-absorbing seat tube structure according to claim 1, characterized in that: The buffer assembly includes a core rod, a compression spring and a lower stopper. The upper end of the core rod is exposed at the through hole. The lower stopper is fixed in the tube body. The compression spring is arranged between the core rod and the lower stopper. The pressing portion normally contacts the upper end of the core rod.
3. The improved connecting rod shock-absorbing seat tube structure according to claim 2, characterized in that: The pressing portion and the upper end of the core rod form a normal contact via at least one arc surface.
4. The improved connecting rod shock-absorbing seat tube structure according to claim 3, characterized in that: The main body has a pressing portion, and the pressing portion is formed with a concave arc surface concave toward the main body, and the upper end of the core rod is provided with an arc body, and the pressing portion contacts the circumferential surface of the arc body in a normal state of the concave arc surface.
5. The improved connecting rod shock-absorbing seat tube structure according to claim 4, characterized in that: The arc body axis is arranged on the upper end of the core rod.
6. The improved connecting rod shock-absorbing seat tube structure according to claim 3, characterized in that: The main body has two pressing parts, and the pressing parts are respectively configured as roller structures. The upper end of the core rod is provided with an arc body, and the pressing parts are in contact with the circumferential surface of the arc body in the normal state of the roller structure.
7. The improved connecting rod shock-absorbing seat tube structure according to claim 6, characterized in that: The arc body axis is arranged on the upper end of the core rod.
8. The improved connecting rod shock-absorbing seat tube structure according to claim 1, characterized in that: The connecting seat has an upper pivot end and a lower pivot end, the upper end of the at least one first connecting rod is pivotally connected to the upper pivot end, and the upper end of the at least one second connecting rod is pivotally connected to the lower pivot end; the main bracket has an upper end and a lower end, the lower end of the at least one first connecting rod is pivotally connected to the upper end of the main bracket, and the lower end of the at least one second connecting rod is pivotally connected to the lower end of the main bracket.
9. The improved connecting rod shock-absorbing seat tube structure according to claim 8, characterized in that: The at least one first connecting rod and the at least one second connecting rod are respectively connected to the main bracket and the connecting seat through a shaft. The first connecting rod and the second connecting rod can movably rotate relative to the main bracket and the connecting seat with the shaft as the axis.
10. The improved connecting rod shock-absorbing seat tube structure according to claim 9, characterized in that: Bearings are further provided. The bearings are respectively arranged on both sides of the shaft passing through the main bracket and on both sides of the shaft passing through the connecting seat.