Shock absorber buffer block and shock absorber
By designing a tapered buffer block structure, the problems of vibration transmission and reduced lifespan caused by abrupt changes in the buffer block stiffness curve were solved, resulting in better buffering effect and durability, reduced impact noise, and improved vehicle comfort.
Patent Information
- Application Number
- CN202520508873.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-03-21
AI Technical Summary
The existing buffer block stiffness curve changes rapidly, resulting in low buffering efficiency for small impacts. Vibration energy is transferred to the vehicle body, affecting comfort. Frequent small impacts lead to fatigue cracks and reduce service life. Under low-speed impacts, energy cannot be effectively dispersed, generating rigid collision noise.
The buffer block body is designed with a conical structure, combining a base and a cone. The outer and inner sides of the cone are provided with annular grooves, and the end face is provided with a protrusion. The cone provides a transition buffer, while the base bears the large impact energy, avoiding local deformation and enhancing the variable stiffness characteristics.
It effectively reduces impact noise, extends the life of the buffer block, avoids stress concentration, improves buffering efficiency, reduces vibration transmission, and enhances vehicle comfort.
Smart Images
Figure CN223754529U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of automobile, concretely speaking, especially relates to a shock absorber buffer block and shock absorber. BACKGROUND
[0002] The current buffer block 17 in the current shock absorber is usually a ring structure made of a single elastic material (such as polyurethane or rubber). The structure of the current buffer block 17 is very simple, as shown in Figure 7 The assembly diagram of the current buffer block 17 is shown in Figure 8 The current buffer block 17 is sleeved on the connecting rod of the shock absorber, located above the limiting ring, and cooperates with the limiting ring to limit the maximum stretching of the shock absorber. When the shock absorber reaches the limit stroke, the impact energy is absorbed through compression deformation, protecting the piston assembly and the guide in the connecting rod assembly, avoiding hard impact between the piston assembly and the guide, and reducing the impact noise generated by the collision between the two.
[0003] The current buffer block 17 has the following problems in application: 1. The stiffness curve of the current buffer block 17 changes rapidly, the buffering efficiency for small impact is low, the vibration energy is directly transmitted to the vehicle body, and the comfort is affected; 2. Frequent small impact can easily cause repeated compression of the local area of the buffer block, accelerate the generation of fatigue cracks, and reduce the service life; 3. The current buffer block 17 cannot effectively disperse energy through deformation, especially prone to rigid collision noise under low-speed impact. SUMMARY
[0004] The utility model aims at providing a shock absorber buffer block and shock absorber to overcome the problems in the prior art.
[0005] The utility model is adopted the following technical scheme realizes, a kind of shock absorber buffer block, including buffer block ontology, the middle part of buffer block ontology is equipped with through-hole, buffer block ontology includes mutually connected base and taper portion, the base is cylindrical, and the end face of base is equipped with annular installation slot;The outer side of the taper portion is conical.
[0006] Further, at least one annular outer annular groove is formed on the outer side of the taper portion.
[0007] Further, two outer annular grooves are formed on the outer side of the taper portion.
[0008] Further, the inclination angle of the outer side of the taper portion is α, and 15°≤α<90°; The inclination angle α of the outer side of the taper portion is 60°.
[0009] Further, at least one annular inner annular groove is formed on the inner side of the taper portion.
[0010] Further, two inner annular grooves are formed on the inner side of the taper portion.
[0011] Further, the end face of the taper part is provided with at least one annular protrusion.
[0012] Further, the buffer block body is made of rubber material.
[0013] A shock absorber comprises a guide and a rod body, the guide is sleeved on the rod body, and further comprises the buffer block of the shock absorber, the bottom of the guide is provided with an annular insertion plate, the insertion plate is inserted into a mounting groove in the end face of the base, and the inner diameter of the mounting groove is smaller than the outer diameter of the insertion plate, and the rod body passes through a through hole in the middle of the buffer block body.
[0014] Further, the shock absorber further comprises an oil storage cylinder, a cylinder, a limiting ring and an oil seal, the top of the oil storage cylinder is provided with a top hole for the rod body to pass through, the guide is installed on the upper side of the inner cavity of the oil storage cylinder, the oil seal is installed between the guide and the top of the oil storage cylinder, the cylinder is installed between the bottom of the oil storage cylinder and the guide, the rod body is inserted into the cylinder, and the limiting ring is installed on the rod body in the cylinder; and the bottom of the rod body is provided with a piston.
[0015] Compared with the prior art, the shock absorber has the following beneficial effects:
[0016] 1. The lower side of the buffer block body is designed as a taper, and the upper side is still a cylinder, so that the buffer block body has a variable stiffness characteristic. When the impact force of the limiting ring on the buffer block body is small, the taper part of the buffer block body mainly plays a buffering role, and since the taper part is tapered, the stiffness is small, so that the impact noise can be effectively reduced and the impact energy can be effectively attenuated. When the impact force of the limiting ring on the buffer block body is large, the base can effectively bear the impact energy after the taper part reaches the compression limit, thereby ensuring the function of the buffer block body. Meanwhile, the taper transition of the buffer block body avoids excessive local deformation when the buffer block body is compressed and deformed, optimizes local compression, avoids stress concentration, and increases the service life of the buffer block.
[0017] 2. The inner diameter of the mounting groove is smaller than the outer diameter of the insertion plate, so that the insertion plate of the guide and the mounting groove of the buffer block body are in interference fit, and the buffer block body is not easy to fall off from the guide.
[0018] 3. The annular protrusion on the end face of the taper part can make the contact between the buffer block body and the limiting ring more soft and reduce the impact strength. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is the front view of the buffer block body of the utility model;
[0020] Figure 2 is the sectional view of the buffer block body of the utility model.
[0021] Figure 3 and Figure 4 are the perspective view of the buffer block body of the utility model respectively;
[0022] Figure 5 is the schematic view of the damper of the utility model;
[0023] Figure 6 is the partial sectional view of the damper of the utility model;
[0024] Figure 7 is the schematic view of the current buffer block in prior art;
[0025] Figure 8 is the assembly schematic view of the current buffer block in prior art.
[0026] In the drawing: 1, buffer block body; 2, through hole; 3, base; 4, taper portion; 5, installation slot; 6, outer annular groove; 7, inner annular groove; 8, protrusion; 9, guider; 10, rod body; 11, plugboard; 12, oil storage cylinder; 13, cylinder; 14, limiting ring; 15, oil seal; 16, piston; 17, current buffer block. DETAILED DESCRIPTION
[0027] In order to make the person in the technical field better understand the technical scheme in the utility model, the technical scheme in the utility model embodiment will be described clearly and completely below in conjunction with the drawings in the utility model embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor should belong to the protection scope of the utility model.
[0028] A damper buffer block, comprising a buffer block body 1, the buffer block body 1 adopts rubber material, and the middle part of the buffer block body 1 is provided with a through hole 2, in use, the rod body 10 on the damper passes through the through hole 2 on the buffer block body 1.
[0029] The buffer block body 1 comprises a base 3 and a taper portion 4 connected with each other, the base 3 is cylindrical, and the end face of the base 3 is provided with an annular installation slot 5, the height of the base 3 is about equal to half of the overall height of the buffer block, the base 3 can ensure that the buffer block body 1 has sufficient deformation resistance, and the outer diameter of the base 3 is slightly smaller than the inner diameter of the cylinder 13.
[0030] The outer side of the taper portion 4 is tapered, the taper portion 4 is the main deformation part of the buffer block body 1, and the height of the taper portion 4 is about half of the height of the buffer block body 1. The lower side of the buffer block body 1 is designed to be tapered, and the upper side is still cylindrical, so that the buffer block body 1 has a variable stiffness characteristic. When the impact force of the limiting ring 14 on the buffer block body 1 is small, the taper portion 4 of the buffer block body 1 mainly plays a buffering role. Since the taper portion 4 is tapered, the stiffness is small, and the impact noise can be effectively reduced and the impact energy can be effectively attenuated. When the impact force of the limiting ring 14 on the buffer block body 1 is large, the base 3 can effectively bear the impact energy after the taper portion 4 reaches the compression limit, thereby ensuring the function of the buffer block body 1. Meanwhile, the taper portion 4 of the utility model makes the buffer block body 1 avoid local deformation when compressed, optimizes local compression, avoids stress concentration, and increases the service life of the buffer block.
[0031] At least one annular outer groove 6 is formed in the outer side of the taper portion 4. Two annular outer grooves 6 are formed in the outer side of the taper portion 4. At least one annular inner groove 7 is formed in the inner side of the taper portion 4. Two annular inner grooves 7 are formed in the inner side of the taper portion 4. The outer groove 6 and the inner groove 7 are arranged on the taper portion 4, so that the taper portion 4 can be compressed more easily, and the buffer block body 1 has better variable stiffness characteristics.
[0032] The inclination angle of the outer side of the taper portion 4 is α, and 15°≤α<90°. The inclination angle α of the outer side of the taper portion 4 is 60°.
[0033] At least one annular protrusion 8 is arranged on the end face of the taper portion 4. Two annular protrusions 8 are arranged on the end face of the taper portion 4. The annular protrusion 8 is arranged on the end face of the taper portion 4, so that the contact between the buffer block body 1 and the limiting ring 14 is more soft, and the impact strength is reduced.
[0034] A shock absorber comprises a guide 9 and a rod body 10, the guide 9 is sleeved on the rod body 10, and further comprises the shock absorber buffer block. An annular insertion plate 11 is arranged on the bottom of the guide 9, the insertion plate 11 is inserted into the mounting groove 5 of the end face of the base 3, and the inner diameter of the mounting groove 5 is smaller than the outer diameter of the insertion plate 11. The rod body 10 passes through the through hole 2 in the middle of the buffer block body 1. Further comprising an oil storage cylinder 12, a cylinder 13, a limiting ring 14 and an oil seal 15. The top of the oil storage cylinder 12 is provided with a top hole for the rod body 10 to pass through. The guide 9 is arranged on the upper side of the inner cavity of the oil storage cylinder 12. The oil seal 15 is arranged between the guide 9 and the top of the oil storage cylinder 12. The cylinder 13 is arranged between the bottom of the oil storage cylinder 12 and the guide 9. The rod body 10 is inserted into the cylinder 13, and the limiting ring 14 is arranged on the rod body 10 in the cylinder 13. The bottom of the rod body 10 is provided with a piston 16.
[0035] The utility model discloses the inner diameter of mounting groove 5 is less than the outer diameter of plug -in board 11, can make the plug -in board 11 of guider 9 with the mounting groove 5 of buffer block body 1 interference fit, make buffer block body 1 not easy from guider 9 fall off. The utility model discloses when using, the rod body 10 is along guider 9 in the cylinder 13 up and down movement, when the rod body 10 moves a certain position upwards, the limiting ring 14 on the rod body 10 will contact with the taper portion 4 of buffer block body 1, and the taper portion 4 of buffer block first plays the buffering effect, when the impact force of limiting ring 14 is bigger, the base 3 can effectively bear the impact energy after the taper portion 4 reaches the compression limit, guarantees the function of buffer block body 1.
Claims
1. A shock absorber bumper block characterized by, The application relates to a buffer block body (1) which is provided with a through hole (2) in the middle part, and comprises a base (3) and a taper part (4) which are connected with each other, wherein the base (3) is in a cylindrical shape, and the end surface of the base (3) is provided with an annular mounting groove (5); and the outer side surface of the taper part (4) is in a taper shape.
2. The shock absorber bumper block of claim 1, wherein The outer side surface of the taper part (4) is provided with at least one annular outer ring groove (6).
3. The shock absorber bushing of claim 2, wherein, The outer side surface of the taper part (4) is provided with two annular outer ring grooves (6).
4. The shock absorber bushing of claim 1, wherein, The inclination angle of the outer side surface of the taper part (4) is alpha, and 15 DEG <= alpha < 90 DEG; the inclination angle alpha of the outer side surface of the taper part (4) is 60 DEG.
5. The shock absorber bushing of claim 1, wherein, The inner side surface of the taper part (4) is provided with at least one annular inner ring groove (7).
6. The shock absorber bushing of claim 5, wherein, The inner side surface of the taper part (4) is provided with two annular inner ring grooves (7).
7. The shock absorber bushing of claim 1, wherein, The end surface of the taper part (4) is provided with at least one annular protrusion (8); the end surface of the taper part (4) is provided with two annular protrusions (8).
8. The shock absorber bushing of claim 1, wherein, The buffer block body (1) is made of rubber.
9. A damper comprising a guide (9) and a rod (10), the guide (9) being sleeved on the rod (10), characterized in that The application further relates to a shock absorber buffer block as claimed in any one of claims 1-8, wherein the bottom of the guide (9) is provided with an annular insertion plate (11) which is inserted into the mounting groove (5) in the end surface of the base (3), and the inner diameter of the mounting groove (5) is smaller than the outer diameter of the insertion plate (11), and the rod body (10) passes through the through hole (2) in the middle part of the buffer block body (1).
10. The damper of claim 9, wherein The application further relates to a shock absorber buffer block as claimed in any one of claims 1-8, wherein the top part of the oil storage cylinder (12) is provided with a top hole for the rod body (10) to pass through, the guide (9) is arranged on the upper side of the inner cavity of the oil storage cylinder (12), the oil seal (15) is arranged between the guide (9) and the top part of the oil storage cylinder (12), the cylinder (13) is arranged between the bottom of the oil storage cylinder (12) and the guide (9), the rod body (10) is inserted into the cylinder (13), and the limiting ring (14) is arranged on the rod body (10) in the cylinder (13); and the bottom of the rod body (10) is provided with the piston (16).