Cushion pillar limiting device

Abstract

The utility model discloses a buffer pillar stopper, which comprises a contraction pillar, a damping spring, a fixing frame, a fixing ring block arranged at one end of the contraction pillar, stabilizing blocks symmetrically distributed on two sides of the fixing ring block, and a stop block welded with the stabilizing blocks, and a rubber pad is adhered on the surface of the stop block through glue; the buffering assembly comprises a connecting block fixed to the telescopic supporting column through a bolt, a fixing column perpendicular to the connecting block, an extrusion block arranged on the outer side of the fixing column in a sleeving mode and a buffering spring, and the outer side of the end, penetrating through the check block, of the fixing column is sleeved with a friction block; a friction assembly; according to the limiting device with the multi-stage buffering design for limiting the stroke of the buffering supporting column, the connecting block and the fixing column stretch out and draw back along with the telescopic supporting column, the buffering spring and the rubber pad buffer impact force, the first-stage buffering design is adopted, the friction plates make friction contact with one another, the friction plates make friction contact with one another as the second-stage braking design, and the effect of braking the telescopic supporting column is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile buffer component, specifically relates to a buffer strut limiting device. BACKGROUND

[0002] Automobiles will encounter various road bumps and impacts during driving, and need to be buffered, and a commonly used buffer component is a strut shock absorber, which can also be called a buffer strut, which can effectively absorb and buffer impact force and reduce the vibration of the vehicle body, and the buffer strut is connected to the steering knuckle on the vehicle body and the suspension at both ends, in order to prevent the buffer strut from being excessively compressed or stretched, and to avoid damage to the internal spring, shock absorber and other components due to exceeding the limit stroke, a limiting device such as a limiting block, a buffer spring limiter and the like is provided on the strut, which has a certain elasticity and rigidity and can withstand a large impact force, and the stroke of the buffer strut is limited to prevent damage to the buffer strut.

[0003] The buffer strut uses a limiting block or a buffer spring for limiting, but the limiting block is easily worn, broken or deformed due to long-term impact and friction, and the limiting block may also fall off, and the buffer spring is subject to elastic fatigue and a decrease in the elastic coefficient after long-term use, and the single limiting block or buffer spring for limiting the strut has disadvantages.

[0004] The existing buffer strut has no multi-stage buffer design for limiting the stroke of the buffer strut, and therefore the present application provides a buffer strut limiting device. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a buffer strut limiting device to solve the problem of the multi-stage buffer design without limiting the stroke of the buffer strut in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a buffer strut limiting device, the buffer strut comprising a retractable strut and a shock absorbing spring, comprising

[0007] The fixed frame comprises a fixed ring block mounted on one end of the retractable strut, stable blocks symmetrically distributed on both sides of the fixed ring block, and a stop block welded to the stable blocks, and a rubber pad is bonded to the surface of the stop block by glue;

[0008] The buffer assembly comprises a connecting block fixed to the retractable strut by bolts, a fixed column connected perpendicularly to the connecting block, an extrusion block and a buffer spring sleeved outside the fixed column, and a friction block sleeved outside one end of the fixed column penetrating the stop block;

[0009] The friction assembly comprises a connecting plate fixed with a steady block through bolts, a fixed shaft installed between opposite surfaces of the connecting plate, a rotating cylinder and a return spring sleeved outside the fixed shaft, a flap and a friction plate installed on the outer surface of the rotating cylinder.

[0010] Preferably, the contraction support comprises a fixed part b and a buffer part a, the damping spring is sleeved outside the fixed part b, the buffer part a is sleeved outside the fixed part b, and the connecting block is connected with the buffer part a.

[0011] Preferably, the stop block is a right trapezoidal structure, the stop block and the rubber pad are both provided with through holes for penetrating the fixed column, and the two ends of the buffer spring are connected with the rubber pad and the extrusion block respectively.

[0012] Preferably, the friction block is a square structure, and the friction block is fixed with the fixed column through bolts.

[0013] Preferably, the connecting plate is a U-shaped structure, the two ends of the return spring are connected with the connecting plate and the rotating cylinder respectively, and the rotating cylinder is rotationally connected with the fixed shaft.

[0014] Preferably, the flap comprises a connecting part c2 fixedly connected with the rotating cylinder and an abutting part c1, and the fixed column is opposite to the abutting part c1.

[0015] Preferably, the friction plate comprises an inclined part d1 and a friction part d2 connected with the rotating cylinder, and the inclined part d1 and the friction part d2 are right-angled structures.

[0016] Compared with the prior art, the friction plate comprises an inclined part d1 and a friction part d2 connected with the rotating cylinder, and the inclined part d1 and the friction part d2 are right-angled structures.

[0017] In the utility model, a limiting device with multi-stage buffer design for limiting the stroke of a buffer support is provided, the connecting block and the fixed column are telescopic with the contraction support, the buffer spring and the rubber pad buffer the impact force, as a primary buffer design, the friction plate is in friction contact with the friction plate, and the friction plate and the friction plate are as secondary brake design, so that the effect of braking the contraction support is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the utility model;

[0019] Figure 2 It is a structural schematic view of the utility model; Figure 1 It is an enlarged structural schematic view of A part in the utility model;

[0020] Figure 3 It is a top view structural schematic view of the connecting plate of the utility model;

[0021] In the figure: 2, fixed ring block; 3, stable block; 4, stop block; 11, retractable support; 12, shock absorbing spring; 41, rubber pad; 51, connecting block; 52, fixed column; 53, extrusion block; 54, buffer spring; 55, friction block; 61, connecting plate; 62, hinged plate; 63, fixed shaft; 64, rotating cylinder; 65, friction plate; 66, return spring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figures 1 to 3 The utility model provides a kind of technical solutions: a kind of buffer support limiting device, buffer support includes retractable support 11 and shock absorbing spring 12, the structure and principle of buffer support are prior art, this application does not make detailed elaboration, including fixed frame, including fixed ring block 2 on retractable support 11 one end, stable block 3 symmetrically distributed in the two sides of fixed ring block 2, stop block 4 is welded with stable block 3, fixed ring block 2 and stable block 3 are welded, and fixed ring block 2 and stable block 3 and stop block 4 are the limiting framework of the application, play the role of fixed and support the application limiting device, the surface of this stop block 4 is bonded with rubber pad 41 by glue, and rubber pad 41 plays the role of buffering;Buffering component, including connecting block 51 fixed with retractable support 11 by bolt, fixed column 52 vertically connected block 51, extrusion block 53 and buffer spring 54 are set on the outer side of fixed column 52, the outer side of one end of fixed column 52 is set with friction block 55, retractable support 11 is telescopic in axial direction, connecting block 51 and fixed column 52 are telescopic along with it, extrusion block 53 on fixed column 52 extrudes buffer spring 54, buffer spring 54 and rubber pad 41 buffer impact force, as primary buffering design, reach the effect of limiting retractable support 11, and friction block 55 plays the role of increasing friction force;Friction component, including connecting plate 61 fixed with stable block 3 by bolt, fixed shaft 63 is installed between opposite surfaces of connecting plate 61, rotating cylinder 64 and return spring 66 are set on the outer side of fixed shaft 63, hinged plate 62 and friction plate 65 are installed on the outer surface of rotating cylinder 64, retractable support 11 is telescopic, fixed column 52 slides along with it, fixed column 52 is against hinged plate 62, hinged plate 62 rotates and drives rotating cylinder 64 to rotate, rotating cylinder 64 rotates with fixed shaft 63 as the shaft, rotating cylinder 64 drives friction plate 65 to overturn, and the overturned friction plate 65 is in friction contact with friction plate 65, and friction plate 65 and friction plate 65 are as secondary brake design, reach the effect of braking retractable support 11.

[0024] In the embodiment, the contraction support 11 comprises a fixed part b and a buffer part a, the damping spring 12 is sleeved outside the fixed part b, the buffer part a is slidingly sleeved outside the fixed part b, the connecting block 51 is connected with the buffer part a, when the contraction support 11 is stretched or contracted in the axial direction, the connecting block 51 and the fixed column 52 are stretched or contracted accordingly, the stop block 4 is a right trapezoidal body structure, the stop block 4 and the rubber pad 41 are both provided with through holes for the fixed column 52 to pass through, the buffer spring 54 is connected with the rubber pad 41 and the extrusion block 53 at two ends respectively, when the connecting block 51 and the fixed column 52 move, the extrusion block 53 on the fixed column 52 extrudes the buffer spring 54, and the buffer spring 54 and the rubber pad 41 buffer the impact force.

[0025] In the embodiment, the friction block 55 is a square body structure, the friction block 55 is fixed with the fixed column 52 through bolts, and the friction plates 65 are in surface contact with each other, so that the contact area is large and the friction braking effect is achieved.

[0026] In the embodiment, the connecting plate 61 is a U-shaped structure, the reset spring 66 is connected with the connecting plate 61 and the rotating cylinder 64 at two ends respectively, the rotating cylinder 64 is rotationally connected with the fixed shaft 63, the flap 62 comprises a connecting part c2 fixedly connected with the rotating cylinder 64 and an abutting part c1, the fixed column 52 is opposite to the abutting part c1, the friction plate 65 comprises an inclined part d1 connected with the rotating cylinder 64 and a friction part d2, the inclined part d1 and the friction part d2 are right-angled structures, the fixed column 52 slides accordingly, the fixed column 52 abuts against the flap 62, the flap 62 rotates and drives the rotating cylinder 64 to rotate, the rotating cylinder 64 rotates around the fixed shaft 63 as the shaft, the rotating cylinder 64 drives the friction plate 65 to overturn, the overturned friction plate 65 is in frictional contact with the friction plate 65, and the friction plate 65 and the friction plate 65 are designed as two-stage braking, so that the contraction support 11 is braked.

[0027] The working principle and use process of the utility model are as follows:

[0028] The buffer support is stretched or contracted, and the contraction support 11 is stretched or contracted in the axial direction;

[0029] The connecting block 51 and the fixed column 52 are stretched or contracted along with the contraction support 11, the extrusion block 53 on the fixed column 52 extrudes the buffer spring 54, the buffer spring 54 and the rubber pad 41 buffer the impact force, which is designed as one-stage buffering, so that the contraction support 11 is limited, and the friction block 55 plays a role in increasing friction;

[0030] The fixed column 52 is slidingly connected with the stop block 4, and the friction block 55 moves along with the fixed column 52;

[0031] The fixed column 52 abuts against the flap 62, the flap 62 rotates and drives the rotating cylinder 64 to rotate, and the rotating cylinder 64 rotates around the fixed shaft 63 as the shaft;

[0032] The rotating cylinder 64 drives the friction plate 65 to flip, and the flipped friction plate 65 is in frictional contact with the friction plate 65, the friction plate 65 and the friction plate 65 are designed as a secondary brake, and the effect of braking the retractable strut 11 is achieved;

[0033] In summary: the application provides a limiting device with a multi-stage buffer design of limiting the buffer strut stroke, the connecting block 51 and the fixed column 52 are telescopic with the retractable strut 11, the buffer spring 54 and the rubber pad 41 buffer the impact force, which is designed as a primary buffer, the friction plate 65 is in frictional contact with the friction plate 65, the friction plate 65 and the friction plate 65 are designed as a secondary brake, and the effect of braking the retractable strut 11 is achieved.

[0034] Although the embodiments of the utility model have been shown and described (see the above detailed description), it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A cushioning strut limiter, the cushioning strut comprising a retraction strut (11) and a shock absorbing spring (12), characterized in that: The utility model relates to a telescopic support, which comprises a fixing frame, a buffer assembly and a friction assembly. The fixing frame comprises a fixing ring block (2) mounted on one end of a telescopic support (11), stable blocks (3) symmetrically arranged on both sides of the fixing ring block (2), and a stop block (4) welded to the stable blocks (3), wherein a rubber pad (41) is attached to the surface of the stop block (4) by means of glue. The buffer assembly comprises a connecting block (51) fixed to the telescopic support (11) by means of bolts, a fixing column (52) vertically connected to the connecting block (51), an extrusion block (53) and a buffer spring (54) sleeved outside the fixing column (52), wherein a friction block (55) is sleeved outside one end of the stop block (4). The friction assembly comprises a connecting plate (61) fixed to the stable blocks (3) by means of bolts, a fixing shaft (63) mounted between opposite surfaces of the connecting plate (61), a rotating cylinder (64) and a return spring (66) sleeved outside the fixing shaft (63), a flap (62) and a friction plate (65) mounted on the outer surface of the rotating cylinder (64).

2. A cushioning strut limiting device according to claim 1, wherein: The telescopic support (11) comprises a fixing part b and a buffer part a, the buffer spring (12) is sleeved outside the fixing part b, the buffer part a is slidably sleeved outside the fixing part b, and the connecting block (51) is connected to the buffer part a.

3. A cushioning strut limiting device according to claim 1, wherein: The stop block (4) is a right trapezoidal body structure, and a through hole is formed in the stop block (4) and the rubber pad (41) for the fixing column (52) to pass through, and the two ends of the buffer spring (54) are connected to the rubber pad (41) and the extrusion block (53), respectively.

4. A cushioning strut limiting device according to claim 1, wherein: The friction block (55) is a square body structure, and the friction block (55) is fixed to the fixing column (52) by means of bolts.

5. A cushioning strut limiting device according to claim 1, wherein: The connecting plate (61) is a "U" type structure, the two ends of the return spring (66) are connected to the connecting plate (61) and the rotating cylinder (64), respectively, and the rotating cylinder (64) is rotationally connected to the fixing shaft (63).

6. A cushioning strut check device according to claim 1, wherein: The flap (62) comprises a connecting part c2 fixedly connected to the rotating cylinder (64) and an abutting part c1, and the fixing column (52) is opposite to the abutting part c1.

7. A cushioning strut limiting device according to claim 1, wherein: The friction plate (65) comprises an inclined part d1 and a friction part d2 connected to the rotating cylinder (64), and the inclined part d1 and the friction part d2 are right angle structures.

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