Suspension limiting device

Abstract

The utility model provides a suspension limiting device, which relates to the field of suspension limiting, and adopts the technical scheme that the suspension limiting device comprises a limiting seat assembly, the limiting seat assembly comprises a limiting top seat and a limiting base, the limiting top seat can be arranged on a frame, a limiting rod is arranged on the limiting top seat, and the limiting base is arranged on the limiting rod. The limiting rod can move in the vertical direction and can be locked on the limiting top base, the limiting rod penetrates through the limiting top base, the end of the limiting rod can abut against the limiting base, a connecting rod is arranged between the limiting top base and the limiting base, a limiting part is arranged on the lower portion of the connecting rod, and the limiting rod can move in the vertical direction and can be locked on the limiting top base. And the limiting base can move up and down along the connecting rod. The limiting device can be used for various limiting distances and is high in generalization level.

Description

Technical Field

[0001] The utility model relates to the field of suspension limiting, in particular to a suspension limiting device. Background Art

[0002] The limit block is a key buffer component in the automobile suspension, mainly used to alleviate wheel impact and avoid rigid collision of the suspension system. In addition, the suspension limit block also plays a role in limiting the dynamic deflection of the suspension, preventing the leaf spring from exceeding the yield limit due to excessive dynamic deflection during operation, thereby ensuring the stability and safety of the vehicle.

[0003] In the prior art, the Chinese utility model patent with the authorization announcement number CN211808909U discloses a front suspension limit, shock absorption and pressure plate combined installation structure, including a limit bracket, a rubber buffer block, a leaf spring pressure plate, a steel leaf spring, a riding bolt and a shock absorber, wherein the limit bracket is arranged at the center of the front axle and fixed to the side of the frame; the leaf spring pressure plate is provided with a square limit structure, a stepped groove and a U-shaped fork bolt hole, and the rubber buffer block and the shock absorber are installed and fixed on the leaf spring pressure plate; the rubber buffer block is provided with a stepped boss, and the stepped boss cooperates with the stepped groove of the leaf spring pressure plate to place the rubber buffer block in the leaf spring pressure plate, and the rubber buffer block, the leaf spring pressure plate and the steel leaf spring are fixed together by a riding bolt; the lower end of the shock absorber is installed and connected to the U-shaped fork bolt hole of the leaf spring pressure plate by bolts. This technical solution integrates multiple structures, effectively reduces the types of parts, and makes the suspension system layout more reasonable and compact.

[0004] Since different types of vehicles use different leaf springs, resulting in different suspension dynamic deflections, the limit block is set on the leaf spring pressure plate, and its height will not change. In order to ensure that various models have a reasonable limit distance, it is necessary to match limit brackets of different sizes. This requires redesigning the limit brackets and corresponding molds, resulting in redundant resource waste and increased development time and cost. Utility Model Content

[0005] In order to solve the technical problem in the above-mentioned prior art that the limit bracket of the suspension needs to be redesigned and produced according to the limit distance, the utility model provides a suspension limit device that can meet the use of various limit distances and has a high level of commonality.

[0006] The utility model adopts the following technical solution to solve the above technical problems: a suspension limit device, including a limit seat assembly, the limit seat assembly including a limit top seat and a limit base, the limit top seat can be set on the frame, a limit rod is arranged on the limit top seat, the limit rod can move in the vertical direction and can be locked on the limit top seat, the limit rod passes through the limit top seat, the end of the limit rod can abut against the limit base, a connecting rod is arranged between the limit top seat and the limit base, a limiting portion is arranged at the lower part of the connecting rod, and the limit base can move up and down along the connecting rod.

[0007] The utility model can adjust the position of the limiting rod according to the limiting distance to achieve the adjustment of the position of the limiting base, can match the whole vehicle with different limiting distances, and improves the universality level of the limiting device.

[0008] Furthermore, a limiting nut is provided on the upper part of the limiting top seat, and the limiting nut can be embedded in the frame. The limiting nut is coaxially arranged with the adjustment hole on the limiting top seat, and a thread is provided on the outer circumference of the limiting rod that can cooperate with the limiting nut and pass through the adjustment hole.

[0009] The utility model adjusts the position of the limit rod by using a thread, can achieve self-locking by means of the thread, saves the need to arrange a corresponding locking structure, and makes the overall structure of the limit device simple and highly reliable.

[0010] Furthermore, two connecting rods are symmetrically arranged with respect to the limiting rod.

[0011] Furthermore, the connecting rod adopts a bolt, and the connecting rod passes through the limiting base, the limiting top seat and the frame from bottom to top in sequence, and a limiting nut 2 is arranged at the tail of the connecting rod.

[0012] The utility model can adjust the height of the connecting rod head by arranging the limiting nut 2 at the tail of the connecting rod, so that the limiting base is always in abutment with the end of the limiting rod, which greatly avoids the impact of the limiting base on the limiting rod when the leaf spring acts on it, thereby extending the service life of the limiting rod.

[0013] Furthermore, mounting screw holes are respectively provided at both ends of the position limiting top seat, and the connecting rod is threadedly connected to the position limiting top seat.

[0014] The utility model can enhance the connection strength between the limiting top seat and the vehicle frame by threading the connecting rod and the limiting top seat.

[0015] Furthermore, limiting baffles are provided on both sides of the limiting top seat, and a limiting boss is provided on the limiting base. Both sides of the limiting boss can be in contact with the inner surface of the limiting baffle, and the limiting boss can abut against the limiting rod.

[0016] The utility model can prevent the limiting base from lateral rotation by arranging the limiting block and the limiting boss, and at the same time increase the strength of the limiting device during limiting.

[0017] Furthermore, the limiting block is vertically provided with a limiting hole, the limiting hole is a blind hole, and the end of the limiting rod abuts against the bottom of the limiting hole.

[0018] The utility model can prevent the limiting base from moving along the length direction of the vehicle body and rotating around the width direction of the vehicle body by arranging the limiting holes, thereby improving the working stability of the limiting device.

[0019] Furthermore, it also includes a limit block, which is arranged at the lower part of the limit base, the limit block is made of natural rubber, and the limit block and the limit base are a vulcanized integrated structure.

[0020] The utility model arranges the limit block on the limit base, which can realize the modularization of the limit device and has a more compact structure compared to the limit block being arranged on the leaf spring pressure plate.

[0021] Furthermore, a plurality of grooves are arranged on the lower portion of the limiting base, and a plurality of protrusions are correspondingly arranged on the upper surface of the limiting block.

[0022] The utility model can increase the vulcanization area of ​​the limit block and the limit base by arranging the groove and the protrusion, thereby enhancing the connection strength between the two and avoiding tearing due to force.

[0023] Furthermore, the limit block is a trapezoidal structure with the narrow end facing downwards.

[0024] The utility model can reduce the rigidity of the limit block when it just takes effect by placing the narrow end of the limit block downwards. As the compression stroke increases, the rigidity of the limit block gradually increases, which can play a better buffering role and ensure the limit without affecting the comfort of the whole vehicle.

[0025] It can be seen from the above technical solutions that the utility model has the following advantages:

[0026] The utility model provides a suspension limit device, which can adjust the position of the limit rod according to the limit distance to achieve the adjustment of the position of the limit base, can match the whole vehicle with different limit distances, and improve the universality of the limit device; by using the form of a thread to adjust the position of the limit rod, the thread can be used to achieve self-locking, eliminating the need to arrange a corresponding locking structure, so that the overall structure of the limit device is simple and the reliability is high; by arranging a limit nut 2 at the tail of the connecting rod, the height of the connecting rod head can be adjusted, so that the limit base is always in abutment with the end of the limit rod, which greatly avoids the impact of the limit rod on the limit rod when the leaf spring acts on the limit base, and prolongs the service life of the limit rod; threaded connection between the connecting rod and the limit top seat can enhance the connection strength between the limit top seat and the frame; by setting the limit The stopper and the limiting boss can prevent the limiting base from rotating laterally, and at the same time increase the strength of the limiting device when limiting; by setting the limiting hole, the limiting base can be further prevented from moving along the length direction of the vehicle body and rotating around the width direction of the vehicle body, thereby improving the working stability of the limiting device; by setting the limiting block on the limiting base, compared with installing the limiting block on the leaf spring pressure plate, the modularization of the limiting device can be achieved, and the structure is more compact; by setting the grooves and protrusions, the vulcanization area of ​​the limiting block and the limiting base can be increased, the connection strength between the two can be enhanced, and tearing under force can be avoided; by turning the narrow end of the limiting block downward, the stiffness of the limiting block when it just takes effect can be reduced. As the compression stroke increases, the gradual increase in the stiffness of the limiting block can play a better buffering role, ensuring the limitation without affecting the comfort of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a schematic diagram of the assembly structure of a specific implementation method of the utility model and a frame.

[0029] Figure 2 It is a structural schematic diagram of a position limiting top seat in a specific implementation manner of the utility model.

[0030] Figure 3 It is a structural schematic diagram of a limiting base in a specific implementation manner of the utility model.

[0031] Figure 4 It is a schematic diagram of the structure of the limit block in a specific implementation manner of the utility model.

[0032] In the figure, 1. limit top seat; 101. limit baffle; 102. mounting screw hole; 2. limit base; 201. limit block; 202. limit hole; 203. weight reduction hole; 3. limit block; 301. protrusion; 4. limit rod; 5. limit nut 1; 6. limit nut 2; 7. connecting rod; 8. frame. DETAILED DESCRIPTION

[0033] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0034] In the prior art, the different limit distances are caused by the different deflections of leaf springs of different vehicle models, which requires the design of limit supports of various heights to match the different limit distances, but this causes waste of resources and increases the development cost of the entire vehicle. For this reason, the inventor creatively adopts the technical concept of an adjustable height of the "limiting surface" at the bottom of the limit support of the suspension limit device. When the limit distance changes, it is only necessary to adjust the height of the limit surface to meet the use requirements, without the need to redesign the limit support, thereby improving the universality of the suspension limit device.

[0035] like Figure 1 As shown, this specific embodiment provides a suspension limit device, including a limit seat assembly, the limit seat assembly includes a limit top seat 1 and a limit base 2, the limit top seat 1 can be set on the frame 8, the limit top seat 1 is provided with a limit rod 4, the limit rod 4 can move in the vertical direction and can be locked on the limit top seat 1, the limit rod 4 runs through the limit top seat 1, the limit base 2 can abut against the end of the limit rod 4, it should be noted that the limit base 2 can be in abutment with the end of the limit rod 4 all the time, or it can be in abutment only when limiting, a connecting rod 7 is arranged between the limit top seat 1 and the limit base 2, a limiting head is arranged at the lower part of the connecting rod 7 to prevent the limit base 2 from falling off, and the limit base 2 can move up and down along the connecting rod 7.

[0036] This specific implementation can adjust the position of the limiting rod 4 according to the limiting distance, thereby adjusting the position of the limiting base 2, and can match vehicles with different limiting distances, thereby improving the universality of the limiting device.

[0037] like Figure 1 and Figure 2As shown, the limit rod 4 can be loosely matched with the limit top seat 1, and a tightening bolt is horizontally arranged on the limit top seat 1 to limit the limit rod 4. In the present specific embodiment, in order to simplify the structure, a limit nut 5 is arranged on the upper part of the limit top seat 1, and the limit nut 5 is coaxially arranged with the adjustment hole on the limit top seat 1. The outer circumference of the limit rod 4 is provided with a thread that can cooperate with the limit nut 5 and pass through the adjustment hole. In the present specific embodiment, the limit rod 4 can be a bolt; by using the form of a thread to adjust the position of the limit rod 4, self-locking can be achieved with the help of the thread, and the corresponding locking structure is omitted, so that the overall structure of the limit device is simple and the reliability is high; in addition, the limit nut 5 can be embedded in the frame 8 to achieve the installation and fixation of the limit top seat 1 and the frame 8.

[0038] like Figure 1 and Figure 3 As shown, preferably, two connecting rods 7 are symmetrically arranged about the limit rod 4. In order to make the limit base 2 and the end of the limit rod 4 always in abutment state, reduce the impact of the limit base 2 on the limit rod 4 during limiting, and extend the service life of the limit rod 4 and the limit nut 5, the connecting rod 7 adopts a bolt, and the limiting part at the lower part of the connecting rod 7 is the head of the bolt. The connecting rod 7 passes through the limit base 2, the limit top seat and the frame 8 from bottom to top. A limit nut 6 is arranged at the tail of the connecting rod 7. The limit nut 6 is located on the upper part of the frame 8. The limit base 2 and the limit rod 4 can be abutted by rotating the limit nut 6.

[0039] Furthermore, in order to improve the connection strength between the limiting top seat 1 and the frame 8 , mounting screw holes 102 are respectively provided at both ends of the limiting top seat 1 , and the connecting rod 7 is threadedly connected to the limiting top seat 1 .

[0040] like Figures 1 to 3 As shown, in order to prevent the lateral rotation of the limiting base 2, limiting baffles 101 are provided on both sides of the limiting top seat 1, and a limiting boss 201 is provided in the middle position of the limiting base 2. The two sides of the limiting boss 201 can be in contact with the inner surface of the limiting baffle 101, and the limiting boss 201 can abut against the limiting rod 4.

[0041] like Figure 1 and Figure 3 As shown, the leaf spring is bent into an arc structure, and the force point on the limit base 2 is not always at the center position of the limit base 2. In order to further limit the limit base 2 and prevent it from moving and rotating around the width direction of the vehicle body, a limit hole 202 is vertically arranged on the limit boss 201. The limit hole 202 is a blind hole, and the end of the limit rod 4 abuts against the bottom of the limit hole 202. Through the action of the limit hole 202 and the adjustment rod, the limit base 2 is effectively prevented from moving and rotating, and the shear force on the connecting rod 7 is reduced. In this specific embodiment, in order to achieve lightweight, weight-reducing holes 203 are arranged on the limit boss 201 at both ends of the limit hole 202.

[0042] like Figure 1 and Figure 4 As shown, this specific embodiment also includes a limit block 3, which can be set on the leaf spring pressure plate, but in this specific embodiment, in order to improve the modular level of the device, the limit block 3 is set at the lower part of the limit base 2, the limit block 3 is made of natural rubber, and the limit block 3 and the limit base 2 are a vulcanized integrated structure; in order to ensure the connection strength between the limit base 2 and the limit block 3, a plurality of grooves are provided at the lower part of the limit base 2, and a plurality of protrusions 301 are correspondingly provided on the upper surface of the limit block 3, and the vulcanization area of ​​the limit block 3 and the limit base 2 can be increased by providing the grooves and protrusions 301; the limit block 3 is a trapezoidal structure with the narrow end facing downward, and the stiffness of the limit block 3 when it just takes effect can be reduced by facing the narrow end of the limit block 3 downward, and as the compression stroke increases, the stiffness of the limit block 3 gradually increases, which can play a better buffering role, ensuring the limit without affecting the comfort of the whole vehicle.

[0043] The adjustment process of this suspension limit device is as follows:

[0044] According to the limiting distance of the leaf spring of the whole vehicle, the limiting rod 4 is rotated to adjust the height of the end of the limiting rod 4, and the limiting nut 6 is rotated to make the limiting base 2 rise until it abuts against the end of the limiting rod 4.

[0045] From the above specific implementations, it can be seen that the utility model has the following beneficial effects:

[0046] 1. The position of the limit rod 4 is adjusted according to the limit distance to adjust the position of the limit base 2, which can match the whole vehicle with different limit distances and improve the universality of the limit device;

[0047] 2. By adjusting the position of the limit rod 4 in the form of a thread, self-locking can be achieved by means of the thread, eliminating the need to arrange a corresponding locking structure, making the overall structure of the limit device simple and highly reliable;

[0048] 3. By setting a limit nut 26 at the tail of the connecting rod 7, the height of the head of the connecting rod 7 can be adjusted, so that the limit base 2 is always in contact with the end of the limit rod 4, which greatly avoids the impact of the limit base 2 on the limit rod 4 when the leaf spring acts on it, and prolongs the service life of the limit rod 4;

[0049] 4. Threading the connecting rod 7 to the limit top seat 1 can enhance the connection strength between the limit top seat 1 and the frame 8; by providing the limit stopper and the limit boss 201, the limit base 2 can be prevented from lateral rotation, and the strength of the limit device during the limit operation can be increased;

[0050] 5. By providing the limiting hole 202, the limiting base 2 can be further prevented from moving along the length direction of the vehicle body and rotating around the width direction of the vehicle body, thereby improving the working stability of the limiting device;

[0051] 6. The limiting boss 201 is arranged on the limiting base 2. Compared with the limiting boss 201 being arranged on the leaf spring pressure plate, the modularization of the limiting device can be realized, and the structure is more compact;

[0052] 7. By providing the groove and the protrusion 301, the vulcanization area of ​​the limiting boss 201 and the limiting base 2 can be increased, the connection strength between the two can be enhanced, and tearing under force can be avoided;

[0053] 8. By placing the narrow end of the limit block 3 downward, the stiffness of the limit block 3 when it first takes effect can be reduced. As the compression stroke increases, the stiffness of the limit block 3 gradually increases, which can play a better buffering role, ensuring the limit without affecting the comfort of the entire vehicle.

[0054] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A suspension limit device, comprising a limit seat assembly, characterized in that: The limit seat assembly comprises a limit top seat (1) and a limit base (2); the limit top seat (1) can be arranged on a vehicle frame; a limit rod (4) is arranged on the limit top seat (1); the limit rod (4) can move in a vertical direction and can be locked on the limit top seat (1); the limit rod (4) passes through the limit top seat (1); the end of the limit rod (4) can abut against the limit base (2); a connecting rod (7) is arranged between the limit top seat (1) and the limit base (2); a limit portion is arranged at the lower part of the connecting rod (7); and the limit base (2) can move up and down along the connecting rod (7).

2. The suspension limiting device according to claim 1, characterized in that: A limiting nut (5) is arranged on the upper part of the limiting top seat (1), and the limiting nut (5) can be embedded in the frame. The limiting nut (5) is coaxially arranged with the adjustment hole on the limiting top seat (1), and the outer circumference of the limiting rod (4) is provided with a thread that can cooperate with the limiting nut (5) and pass through the adjustment hole.

3. The suspension limiting device according to claim 2, characterized in that: Two connecting rods (7) are symmetrically arranged with respect to the limiting rod (4).

4. The suspension limiting device according to claim 3, characterized in that: The connecting rod (7) is a bolt, and the connecting rod (7) passes through the limiting base (2), the limiting top seat (1) and the frame in sequence from bottom to top, and a limiting nut 2 (6) is arranged at the tail of the connecting rod (7).

5. The suspension limiting device according to claim 4, characterized in that: The two ends of the position limiting top seat (1) are respectively provided with mounting screw holes (102), and the connecting rod (7) is threadedly connected to the position limiting top seat (1).

6. The suspension limiting device according to claim 1, characterized in that: The limiting top seat (1) is provided with limiting baffles (101) on both sides, and the limiting base (2) is provided with a limiting boss (201), the two sides of the limiting boss (201) can be in contact with the inner surface of the limiting baffle (101), and the limiting boss (201) can be in contact with the limiting rod (4).

7. The suspension limiting device according to claim 6, characterized in that: The limiting boss (201) is vertically provided with a limiting hole (202), the limiting hole (202) is a blind hole, and the end of the limiting rod (4) abuts against the bottom of the limiting hole (202).

8. The suspension limiting device according to any one of claims 1 to 7, characterized in that: It also comprises a limit block (3), the limit block (3) being arranged at the lower part of the limit base (2), the limit block (3) being made of natural rubber, and the limit block (3) and the limit base (2) being a vulcanized integrated structure.

9. The suspension limiting device according to claim 8, characterized in that: The lower part of the limiting base (2) is provided with a plurality of grooves, and the upper surface of the limiting block (3) is correspondingly provided with a plurality of protrusions (301).

10. The suspension limiting device according to claim 9, characterized in that: The limit block (3) is a trapezoidal structure with the narrow end facing downwards.

Images