A type of automotive rubber buffer block

Abstract

The present application relates to a vehicle rubber buffer block, which belongs to the field of automobile shock-absorbing accessories, and includes a mounting seat, a receiving cavity is provided in the mounting seat, and a powder solute is provided in the receiving cavity; a bag body is provided in the receiving cavity, and a solvent is provided in the bag body, and the solvent and the powder solute are mixed to form a non-Newtonian fluid; a rubber block is provided at one end of the mounting seat close to the ground, and the rubber block is provided with a receiving groove; a limiting rod is inserted in the rubber block and the mounting seat, and when the rubber block is squeezed and broken, the limiting rod can mix the powder solute and the solvent. The present application improves the situation in which the rubber buffer block loses its limiting effect on the end of the rear axle stroke after it breaks.

Description

Technical Field

[0001] The present application relates to the field of automobile shock-absorbing accessories, and in particular to a rubber buffer block for automobiles. Background Art

[0002] The suspension system is a general term for the force-bearing connection device between the frame and the axle or wheel of a car. The suspension system can buffer the vibration transmitted to the frame or body by uneven road surface, thereby improving the vehicle's driving stability and passenger comfort.

[0003] For transport vehicles, the rear axle suspension system mostly uses leaf springs. When a vehicle carrying heavy cargo passes through a bumpy road, the rear axle is prone to jump up under the impact. In order to reduce the impact of the jumping rear axle and rear wheel on the vehicle frame or body, a rubber buffer block is set at the position of the frame corresponding to the leaf spring. When the rear axle jumps up to the end of the allowable travel, the leaf spring can abut against the rubber buffer block. For vehicles that often travel on bumpy roads, the rubber buffer blocks of the vehicle are prone to frequent impact and extrusion, and the rubber buffer blocks are prone to fatigue, and in severe cases, they are directly broken.

[0004] With regard to the above-mentioned related technologies, when the vehicle is violently bumped, the rubber buffer block is prone to break under the impact of the leaf spring. During driving, it is difficult for the driver to promptly discover the breakage of the rubber buffer block, and the rear axle loses the limiting effect of the rubber buffer block on the end of its travel. In subsequent bumps, the rear axle is prone to hit the frame or the wheels are prone to rub against the body. Summary of the invention

[0005] In order to improve the situation where the rubber buffer block loses its limiting effect on the end of the rear axle stroke after the rubber buffer block is broken, the present application provides a rubber buffer block for a vehicle.

[0006] The present application provides a vehicle rubber buffer block adopting the following technical solution:

[0007] A rubber buffer block for a vehicle comprises a mounting seat, a receiving cavity is arranged in the mounting seat, and a powder solute is arranged in the receiving cavity;

[0008] The bag body is arranged in the containing cavity, and a solvent is arranged in the bag body, and the solvent and the powder solute are mixed to form a dilatant non-Newtonian fluid;

[0009] The rubber block is arranged at one end of the mounting base close to the ground, and the rubber block is provided with a receiving groove;

[0010] The limiting rod is inserted in the rubber block and the mounting seat. When the rubber block is squeezed and broken, the limiting rod can mix the powder solute and the solvent.

[0011] By adopting the above scheme, when the height and force of the rear axle jumping up are too large, and the rubber block is squeezed to produce plastic deformation or cracks, the limit rod makes the powder solute and the solvent mix in the containing cavity to form an expansive non-Newtonian fluid, and part of the expansive non-Newtonian fluid flows into the containing groove and the broken gap of the rubber block. When the rubber block encounters the impact of the next leaf spring, the expansive non-Newtonian fluid is violently hit. Since the viscosity of the expansive non-Newtonian fluid increases with the increase of the applied pressure, the expansive non-Newtonian fluid increases the strength and hardness of the rubber block with cracks, improves the situation where the rubber block loses the limiting effect on the end of the rear axle stroke after the rubber block produces plastic deformation and cracks, and reduces the probability of the rear axle hitting the frame or the wheel and the body rubbing in subsequent bumps. If some cracks in the rubber block connect the containing groove with the outside atmosphere, some of the dilatant non-Newtonian fluid will easily seep out of the rubber block. When the driver refuels or stops for inspection, the seeped dilatant non-Newtonian fluid will make it easier for the driver to promptly discover the breakage of the rubber block, thereby making it easier for the driver to promptly discover dangerous situations that affect driving safety and replace the rubber block with a new one.

[0012] Preferably, a partition fence is provided in the accommodating chamber, the bag body and the powder solute are distributed on both sides of the partition fence, one end of the limit rod is provided at the position of the bag body, and the other end of the limit rod is inserted into the accommodating groove, and when the rubber block is squeezed and broken, the rubber block drives the limit rod to crush the bag body.

[0013] By adopting the above scheme, when the rubber block is subjected to a violent impact and produces plastic deformation or cracks, the end of the rubber block away from the mounting seat hits the end of the limit rod away from the mounting seat, and the limit rod crushes the bag under the action of the impact force, and the solvent in the bag flows out and mixes with the powder solute. The partition bar limits the displacement of the bag, reducing the probability of the bag being displaced to the powder solute area under the impact of the limit rod before it is broken, and at the same time limits the area where the bag can be deformed freely, so that the stress is concentrated at the gap position of the bag corresponding to the partition bar, thereby improving the success rate and effect of bag rupture.

[0014] Preferably, an elastic block is fixedly connected to one end of the limiting rod close to the bag body, the elastic block is fixedly connected to the dividing fence, and one end of the elastic block away from the limiting rod abuts against the bag body, and the connection strength between the elastic block and the dividing fence is less than the axial compressive strength of the limiting rod.

[0015] By adopting the above scheme, after the limiting rod is hit, the connection position between the elastic block and the dividing fence breaks, and the elastic block buffers the impact between the limiting rod and the bag body, reducing the probability that the limiting rod directly penetrates the bag body and forms a sliding seal with the bag body. The limiting rod transmits the impact force to the bag body evenly through the elastic block, and then utilizes the isotropy of the solvent in the bag body to transmit the impact force to the gap of the dividing fence, and the bag body expands and breaks at the gap position corresponding to the dividing fence. The connection strength between the elastic block and the dividing fence is less than the axial compressive strength of the limiting rod, which facilitates the timely separation of the elastic block and the dividing fence at the initial stage of the impact, reduces the probability of a large amount of impact force being transferred to the dividing fence, and also reduces the probability of the limiting rod bending and releasing the impact force.

[0016] Preferably, a stirring paddle is rotatably connected to the mounting seat at a position corresponding to the accommodating cavity. The stirring paddle is threadedly connected to a limiting rod. The limiting rod can slide along the compression direction of the rubber block. During the sliding of the limiting rod, the stirring paddle is driven to rotate by the thread.

[0017] By adopting the above scheme, during the movement of the limiting rod toward the bag body, the limiting rod drives the stirring paddle to rotate by means of a thread, and the stirring paddle mixes the solvent and the powder solute evenly, thereby improving the performance of the dilatant non-Newtonian fluid and reducing the probability of powder solute agglomeration.

[0018] Preferably, the mounting seat is provided with a return spring, and the return spring can exert a force to move the limiting rod away from the mounting seat.

[0019] By adopting the above scheme, after the leaf spring ends its impact on the rubber block and the limit rod, the reset spring drives the limit rod to move away from the bag body. During the reset process, the limit rod drives the stirring paddle to rotate in the opposite direction, further stirring the powder solute and the solvent, thereby improving the uniformity of the dilatant non-Newtonian fluid.

[0020] Preferably, the rubber block is provided with a plurality of capillaries, and the capillaries are connected to the accommodating cavity.

[0021] By adopting the above scheme, the capillary increases the dispersion amount of the dilatant non-Newtonian fluid in the rubber block, thereby enhancing the impact resistance of the cracked rubber block. At the same time, the capillary phenomenon of the capillary is utilized to accelerate the diffusion of the dilatant non-Newtonian fluid into the rubber block, so that the cracked rubber block can reach a state of withstanding the next impact as soon as possible.

[0022] Preferably, a diaphragm is provided at the position of the stirring paddle corresponding to the containing tank and the capillary tube, the diaphragm seals the capillary tube and the containing tank, and the diaphragm can be destroyed when the stirring paddle rotates.

[0023] By adopting the above solution, the diaphragm seals the containing groove and the capillary before the stirring paddle rotates, that is, before the limiting rod is impacted, thereby reducing the probability of powder solute entering the capillary and the containing groove in advance and causing blockage of the capillary and the containing groove.

[0024] Preferably, the mounting seat is provided with a flexible protective cover, and the protective cover covers the rubber block.

[0025] By adopting the above solution, when the rear axle has a severe impact on the rubber block, causing large cracks to form in the rubber block or even partial detachment, the protective cover maintains the stability of the basic shape of the rubber block and reduces the probability of the dilatant non-Newtonian fluid leaking from the cracks.

[0026] Preferably, a hard abutment plate is provided on the end of the protective cover corresponding to the rubber block away from the mounting seat, and the abutment plate is connected to the rubber block on one side close to the mounting seat.

[0027] By adopting the above solution, the abutment plate enhances the strength of the lower end of the rubber block and the lower end of the protective cover, reduces the probability of the lower end of the rubber block or the lower end of the protective cover being broken under impact, and reduces the probability of loss of the dilatant non-Newtonian fluid.

[0028] In summary, this application has the following beneficial effects:

[0029] 1. The dilatant non-Newtonian fluid increases the strength and hardness of the rubber block with cracks, improves the situation where the rubber block loses its limiting effect on the end of the rear axle stroke after plastic deformation and cracks occur in the rubber block, and reduces the probability of the rear axle hitting the frame or the wheel rubbing against the body in subsequent bumps;

[0030] 2. The connection strength between the elastic block and the partition is less than the axial compressive strength of the limit rod, which facilitates the timely separation of the elastic block and the partition at the initial stage of the impact, reduces the probability of a large amount of impact force being transferred to the partition, and also reduces the probability of the limit rod bending to release the impact force;

[0031] 3. When the limiting rod moves toward the bag body, the limiting rod drives the stirring paddle to rotate by means of a thread, and the stirring paddle mixes the solvent and the powder solute evenly, thereby improving the performance of the dilatant non-Newtonian fluid and reducing the probability of agglomeration of the powder solute. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a rubber buffer block for a vehicle according to an embodiment of the present application;

[0033] Figure 2 is a cross-sectional view of a rubber buffer block for a vehicle according to an embodiment of the present application;

[0034] Figure 3 It is a structural schematic diagram of a protruding limit rod of a rubber buffer block for a vehicle according to an embodiment of the present application;

[0035] Figure 4 yes Figure 2 Enlarged view of part A.

[0036] Explanation of the reference numerals in the accompanying drawings: 1. Mounting seat; 11. Mounting plate; 12. Accommodating chamber; 13. Sliding key; 2. Bag body; 21. Return spring; 3. Dividing fence; 31. Spiked portion; 32. Elastic block; 4. Limiting rod; 41. Slide groove; 42. Stirring paddle; 421. Diaphragm; 5. Rubber block; 51. Capillary; 52. Accommodating groove; 6. Protective cover; 61. Abutment plate; 62. Pressure relief hole. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-4 This application is described in further detail.

[0038] The present application discloses a rubber buffer block for a vehicle. Figure 1-Figure 3 , including a mounting seat 1, the mounting seat 1 is fixedly connected with a mounting plate 11, and the mounting plate 11 can be bolted to the bottom of the frame. A accommodating chamber 12 is provided in the mounting seat 1, and a partition 3 is fixedly connected to the mounting seat 1 corresponding to the accommodating chamber 12, and the partition 3 divides the accommodating chamber 12 into two parts, an upper part and an lower part. A bag body 2 is placed on the side of the accommodating chamber 12 corresponding to the partition 3 away from the ground, and the bag body 2 is filled with a solvent. A plurality of spikes 31 are fixedly connected to the side of the partition 3 close to the bag body 2, and the spikes 31 reduce the difficulty of the bag body 2 breaking when impacted. A powder solute is placed on the side of the accommodating chamber 12 corresponding to the partition 3 close to the ground, and the solvent and the powder solute are mixed to form a dilatant non-Newtonian fluid. The powder solute can be corn starch or potato starch, and the solvent can be water or antifreeze. The antifreeze improves the use effect of the vehicle rubber buffer block in a low temperature environment and reduces the probability that the dilatant non-Newtonian fluid cannot be formed due to the freezing of the solvent.

[0039] Reference Figure 2 A rubber block 5 is fixedly connected to one end of the mounting seat 1 away from the bag body 2. The rubber block 5 is coaxially arranged with the mounting seat 1. A hard abutment plate 61 is fixedly connected to one end of the rubber block 5 away from the mounting seat 1. The abutment plate 61 can be made of steel or aluminum, and the abutment plate 61 can abut against the leaf spring. A flexible protective cover 6 is fixedly connected to the mounting seat 1 at the position corresponding to the rubber block 5. The protective cover 6 can be made of butadiene rubber. A pressure relief hole 62 is provided at the position of the protective cover 6 near the mounting seat 1. The pressure relief hole 62 reduces the probability of the protective cover 6 being crushed. The protective cover 6 covers the rubber block 5, and the abutment plate 61 extends out of the protective cover 6. The edge of the abutment plate 61 is fixed to the protective cover 6. The abutment plate 61 enhances the strength of the lower end of the rubber block 5 and the lower end of the protective cover 6, reduces the probability of the lower end of the rubber block 5 or the lower end of the protective cover 6 being broken under the impact, and reduces the probability of the loss of the dilatant non-Newtonian fluid.

[0040] Reference Figure 2 and Figure 3The outer peripheral surface of the rubber block 5 is wavy, and a plurality of capillaries 51 and a receiving groove 52 are provided in the rubber block 5. The capillaries 51 and the receiving groove 52 are connected to the receiving chamber 12. The receiving groove 52 is coaxially arranged with the rubber block 5 and the mounting seat 1. A limiting rod 4 is inserted in the receiving groove 52. The limiting rod 4 is penetrated through the mounting seat 1. The limiting rod 4 and the rubber block 5 are coaxially arranged. The limiting rod 4 can slide along the length direction of the receiving groove 52. An elastic block 32 is fixedly connected to one end of the limiting rod 4 close to the mounting seat 1. The elastic block 32 can be made of rubber. The elastic block 32 is fixedly connected to the partition fence 3. The end of the elastic block 32 away from the limiting rod 4 abuts against the bag body 2. The connection strength between the elastic block 32 and the partition fence 3 is less than the axial compressive strength of the limiting rod 4. The end of the limiting rod 4 away from the mounting seat 1 is located at the deformation limit position where the rubber block 5 is compressed to produce cracks. When the rubber block 5 is squeezed to produce plastic deformation or cracks, the end of the rubber block 5 away from the mounting seat 1 pushes the limiting rod 4 and the elastic block 32 to burst the bag body 2.

[0041] Reference Figure 2 and Figure 3 When the height and force of the rear axle jumping up are too great, and the rubber block 5 is squeezed to produce plastic deformation or cracks, the limit rod 4 makes the powder solute and the solvent mix into an expansive non-Newtonian fluid in the accommodating chamber 12, and part of the expansive non-Newtonian fluid flows into the accommodating groove 52 and the broken gap of the rubber block 5. When the rubber block 5 encounters the impact of the next leaf spring, the expansive non-Newtonian fluid is violently hit. Since the viscosity of the expansive non-Newtonian fluid increases with the increase of the applied pressure, the expansive non-Newtonian fluid increases the strength and hardness of the rubber block 5 with cracks, improves the situation that the rubber block 5 loses the limiting effect on the end of the rear axle stroke after the rubber block 5 produces plastic deformation and cracks, and reduces the probability of the rear axle hitting the frame or the wheel and the body rubbing in the subsequent bumps.

[0042] Reference Figure 3 and Figure 4The limiting rod 4 is provided with a slide groove 41 arranged along its length direction, and a slide key 13 is fixedly connected to the position of the slide groove 41 corresponding to the mounting seat 1, and the slide key 13 is slidably connected to the slide groove 41 along the length direction of the limiting rod 4. The limiting rod 4 is threadedly connected with a stirring paddle 42 arranged coaxially in the corresponding accommodating cavity 12, and the stirring paddle 42 is rotatably connected to the mounting seat 1. The limiting rod 4 can slide along the compression direction of the rubber block 5, and the stirring paddle 42 is driven to rotate by the thread during the sliding process of the limiting rod 4. In the process of the limiting rod 4 moving toward the bag body 2, the limiting rod 4 drives the stirring paddle 42 to rotate by the thread, and the stirring paddle 42 mixes the solvent and the powder solute evenly, improves the performance of the dilatant non-Newtonian fluid, and reduces the probability of the powder solute agglomeration. A return spring 21 is arranged in the bag body 2, and the two ends of the return spring 21 are respectively connected to the end of the bag body 2 away from the limiting rod 4 and the end of the bag body 2 close to the limiting rod 4. The return spring 21 can give the force of the limiting rod 4 away from the mounting seat 1 through the bag body 2 and the elastic block 32. After the impact of the leaf spring on the rubber block 5 and the limit rod 4 ends, the reset spring 21 drives the limit rod 4 to move away from the bag body 2. During the reset process, the limit rod 4 drives the stirring paddle 42 to rotate in the opposite direction, further stirring the powder solute and the solvent, and improving the uniformity of the dilatant non-Newtonian fluid. The stirring paddle 42 is bonded with a diaphragm 421 at the position corresponding to the receiving groove 52 and the capillary 51. The diaphragm 421 seals the capillary 51 and the receiving groove 52, and the diaphragm 421 can be destroyed when the stirring paddle 42 rotates. The diaphragm 421 seals the receiving groove 52 and the capillary 51 before the stirring paddle 42 rotates, that is, before the limit rod 4 is impacted, thereby reducing the probability that the powder solute enters the capillary 51 and the receiving groove 52 in advance and causes the capillary 51 and the receiving groove 52 to be blocked.

[0043] The implementation principle of a vehicle rubber buffer block in the embodiment of the present application is as follows: when the height and force of the rear axle jumping up are too large, and the rubber block 5 is squeezed to produce plastic deformation or cracks, the limit rod 4 will fracture the bag body 2 under the action of the impact force, and the solvent in the bag body 2 will flow out and mix with the powder solute to form an expansive non-Newtonian fluid. In the process of the limit rod 4 moving toward the bag body 2, the limit rod 4 drives the stirring paddle 42 to rotate by means of a thread, and the stirring paddle 42 mixes the solvent and the powder solute evenly, thereby improving the performance of the expansive non-Newtonian fluid and reducing the probability of powder solute agglomeration. After the impact of the leaf spring on the rubber block 5 and the limit rod 4 ends, the reset spring 21 drives the limit rod 4 to move away from the bag body 2, and the limit rod 4 drives the stirring paddle 42 to rotate in the opposite direction during the reset process, further stirring the powder solute and the solvent, thereby improving the uniformity of the expansive non-Newtonian fluid.

[0044] Next, the dilatant non-Newtonian fluid flows into the receiving groove 52, the capillary 51 and the broken gap of the rubber block 5. The capillary 51 increases the dispersion amount of the dilatant non-Newtonian fluid in the rubber block 5, thereby enhancing the impact resistance of the cracked rubber block 5. At the same time, the capillary phenomenon of the capillary 51 is utilized to accelerate the diffusion of the dilatant non-Newtonian fluid into the rubber block 5, so that the cracked rubber block 5 can reach the state of withstanding the next impact as soon as possible.

[0045] When the rubber block 5 encounters the impact of the next leaf spring, the dilatant non-Newtonian fluid is hit violently, and since the viscosity of the dilatant non-Newtonian fluid increases with the increase of the applied pressure, the dilatant non-Newtonian fluid increases the strength and hardness of the rubber block 5 with cracks, thereby improving the situation in which the rubber block 5 loses its limiting effect on the end of the rear axle stroke after plastic deformation and cracks occur in the rubber block 5, thereby reducing the probability of the rear axle hitting the frame or the wheel rubbing against the body in subsequent bumps.

[0046] When the rear axle has a severe impact on the rubber block 5, and the rubber block 5 has a large crack or even partially falls off, the protective cover 6 maintains the stability of the basic shape of the rubber block 5, reducing the probability of the expansion plastic non-Newtonian fluid leaking from the crack. Part of the expansion plastic non-Newtonian fluid seeps out of the rubber block 5 and sprays out from the pressure relief hole 62 of the protective cover 6. When the driver refuels or stops for inspection, the seeped expansion plastic non-Newtonian fluid makes it easy for the driver to promptly discover that the rubber block 5 is broken, so that the driver can promptly discover the dangerous situation that affects driving safety and replace the new rubber block 5 in time.

[0047] The embodiment of the present application improves the situation where the rubber buffer block loses its limiting effect on the end of the rear axle travel after the rubber buffer block is broken.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rubber buffer block for a vehicle, characterized in that: include: A mounting seat (1), wherein a receiving chamber (12) is provided in the mounting seat (1), and a powdered solute is provided in the receiving chamber (12); The bag body (2) is arranged in the containing cavity (12), and a solvent is arranged in the bag body (2), and the solvent and the powder solute are mixed to form a dilatant non-Newtonian fluid; A rubber block (5) is arranged at one end of the mounting base (1) close to the ground, and the rubber block (5) is provided with a receiving groove (52); A limiting rod (4) is inserted into the rubber block (5) and the mounting seat (1), and when the rubber block (5) is squeezed and broken, the limiting rod (4) can mix the powdered solute and the solvent; A partition fence (3) is arranged in the accommodating chamber (12), the bag body (2) and the powder solute are distributed on both sides of the partition fence (3), one end of the limiting rod (4) is arranged at the position of the bag body (2), and the other end of the limiting rod (4) is inserted into the accommodating groove (52), and when the rubber block (5) is squeezed and broken, the rubber block (5) drives the limiting rod (4) to press and explode the bag body (2); An elastic block (32) is fixedly connected to one end of the limiting rod (4) close to the bag body (2), the elastic block (32) is fixedly connected to the partition bar (3), and one end of the elastic block (32) away from the limiting rod (4) abuts against the bag body (2), and the connection strength between the elastic block (32) and the partition bar (3) is less than the axial compressive strength of the limiting rod (4); A stirring paddle (42) is rotatably connected to the mounting seat (1) at a position corresponding to the accommodating cavity (12); the stirring paddle (42) is threadedly connected to the limiting rod (4); the limiting rod (4) can slide along the compression direction of the rubber block (5); and the stirring paddle (42) is driven to rotate by the thread during the sliding process of the limiting rod (4); The mounting seat (1) is provided with a return spring (21), and the return spring (21) can exert a force on the limiting rod (4) to move away from the mounting seat (1); The end of the limiting rod (4) away from the mounting seat (1) is located at the deformation limit position where the rubber block (5) is compressed to produce cracks. When the rubber block (5) is squeezed to produce plastic deformation or cracks, the end of the rubber block (5) away from the mounting seat (1) pushes the limiting rod (4) and the elastic block (32) to press and burst the bag body (2); When the height and force of the rear axle jumping up are too great and the rubber block (5) is squeezed to produce plastic deformation or cracks, the limiting rod (4) causes the powder solute and the solvent to mix in the containing chamber (12) to form an expansive non-Newtonian fluid, and part of the expansive non-Newtonian fluid flows into the containing groove (52) and the broken gap of the rubber block (5).

2. The vehicle rubber buffer block according to claim 1, characterized in that: The rubber block (5) is provided with a plurality of capillaries (51), and the capillaries (51) are connected to the accommodating cavity (12).

3. The vehicle rubber buffer block according to claim 2, characterized in that: A diaphragm (421) is provided at the position of the stirring paddle (42) corresponding to the containing groove (52) and the capillary (51); the diaphragm (421) seals the capillary (51) and the containing groove (52); and the stirring paddle (42) can destroy the diaphragm (421) when rotating.

4. The vehicle rubber buffer block according to claim 1, characterized in that: The mounting seat (1) is provided with a flexible protective cover (6), and the protective cover (6) covers the rubber block (5).

5. The vehicle rubber buffer block according to claim 4, characterized in that: A hard abutment plate (61) is provided at one end of the protective cover (6) corresponding to the rubber block (5) away from the mounting seat (1), and the abutment plate (61) is connected to the rubber block (5) at one side close to the mounting seat (1).

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