A damping device for a recreational vehicle

Abstract

The application relates to the technical field of motor home damping, and discloses a damping device for a motor home, which comprises a body mounting sleeve matched with a body longitudinal beam, a rubber bush matched with a mounting ring at the upper end of a shock absorber piston rod, a shock absorber mounting sleeve matched with the rubber bush, and shock absorber mounting bolts for mounting the shock absorber on the body sleeve, the rubber bush comprises a fixedly glued rubber sleeve and a metal cylinder, a plurality of floating support parts are uniformly distributed on the outer wall of the rubber sleeve in the circumferential direction, the floating support part comprises a floating support block and a mounting groove for mounting the floating support block, the mounting groove is arranged on the outer wall of the rubber sleeve, the floating support block is in radial sliding fit with the mounting groove, and the floating support block is connected with the bottom of the mounting groove through a compression spring, so that the problem that the rubber bush is abraded or falls off due to large axial deformation can be greatly reduced, the abrasion and aging speed is reduced, and the service life of the rubber bush is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of shock absorption of recreational vehicles, and in particular to a shock absorption device for recreational vehicles. Background Art

[0002] A recreational vehicle (RV), also known as a "home on wheels," combines the functions of both a "house" and a "car," but its core nature remains that of a car. It is a mobile vehicle equipped with the essential amenities of a home. RVs are a fashionable and imported model. Their amenities include bedding, a stove, refrigerator, cabinets, sofas, dining tables and chairs, toiletries, air conditioning, televisions, stereos, and other furniture and appliances. They are divided into a driving area, living area, bedroom area, bathroom area, and kitchen area. RVs are a fashionable product that combines "food, clothing, shelter, and transportation," enabling the concept of "traveling in life and living in travel." Shock absorbers are one of the most vulnerable parts of RVs, and their performance directly affects the vehicle's ride stability and the lifespan of other components.

[0003] The shock absorber works by damping the rebound oscillations of the spring after absorbing shock, as well as the impact from the road surface, through the shock absorber, thereby achieving the desired shock absorption effect. When driving over uneven roads, while the shock-absorbing spring can filter out the vibrations, the spring itself will still experience reciprocating motion, and the shock absorber is used to dampen this spring bouncing. In traditional shock absorbers, the shock absorber is directly bolted to the vehicle body or frame via a bushing. This bushing is subject to significant impact, causing the rubber bushing to wear or even fall off prematurely.

[0004] like Figure 5 The figure shows the installation structure of the existing shock absorber, including: 1. body mounting sleeve, 2. body longitudinal beam, 3. rubber bushing, 4. shock absorber mounting sleeve, 5. shock absorber mounting bolt, 6. shock absorber body, 7. shock absorber protective cover. After this structure, the shock absorber is directly mounted on the body mounting sleeve by bolts, and the rubber bushing is used for the flexible connection between the body and the shock absorber. The structural form of the rubber bushing is mainly to use a metal tube and a rubber sleeve bonded by fixing glue as a bushing. The bushing of this structural form can bear a large load, but with the use of the bushing, the bonding performance of the fixing glue decreases. Under the action of axial force, the rubber sleeve may produce axial movement, thereby affecting the structural stability of the bushing, and when the shock absorber is subjected to a large impact force, the axial deformation of the rubber bushing is large, thereby causing the rubber bushing to wear or fall off prematurely. Summary of the Invention

[0005] The purpose of the present invention is to provide a shock absorbing device for a recreational vehicle, which can greatly reduce the problem of premature wear or falling off of the rubber bushing due to large axial deformation of the rubber bushing, reduce the speed of wear and aging, and extend the service life of the rubber bushing.

[0006] The technical purposes are achieved by the following technical solutions.

[0007] The shock absorber device of the house car comprises a body mounting sleeve matched with the body longitudinal beam, a rubber bush matched with the mounting ring on the upper end of the shock absorber piston rod, a shock absorber mounting sleeve matched with the rubber bush, and a shock absorber mounting bolt for mounting the shock absorber on the body sleeve.

[0008] By adopting the above technical scheme, the floating support part and the rubber bush are matched with the mounting ring on the upper end of the shock absorber piston rod, the floating support block in the floating support part is connected with the bottom of the mounting groove through the compression spring, the floating support block in the floating support part is always close to the inner wall of the mounting ring on the upper end of the shock absorber piston rod under the elastic force of the compression spring, when the rubber bush and the floating support block are worn, the floating support block can move radially and be close to the inner wall of the mounting ring under the elastic force of the compression spring, the wear amount is compensated quickly, the frequency of replacing the rubber bush due to wear and loosening is greatly reduced, and the service life of the rubber bush is improved.

[0009] Moreover, the radial deformation between the floating support block and the compression spring can buffer certain vibration impact, so that the impact force borne by the rubber bush is effectively reduced, so that the floating support part can achieve the quick shock absorption effect when the body jumping or torsional vibration amplitude is small, and when the body jumping or torsional vibration amplitude is large, the floating support block overcomes the elastic force of the compression spring and is pressed into the mounting groove, and at the same time, with the rubber bush being extruded, the rubber bushes on both sides of the mounting groove are extruded into the cavity of the mounting groove, that is, a certain circumferential deformation is generated, so that the amount of axial deformation of the rubber bush is greatly reduced, so that the problems of early wear or falling of the rubber bush due to large axial deformation of the rubber bush are greatly reduced, and the service life of the rubber bush is further improved.

[0010] The mounting groove is a trapezoidal groove, and the width of the side of the mounting groove close to the center of the rubber bush is greater than the width of the side of the mounting groove away from the center of the rubber bush.

[0011] By adopting the technical scheme, the installation groove is a trapezoidal groove, so that the floating support block gradually separates from the side wall of the installation groove during being pressed into the installation groove, which not only can effectively reduce the heat generated by the friction between the floating support block and the installation groove to cause the aging of the rubber bushing or the wear of the floating support block and the rubber sleeve, but also can increase the distance between the floating support block and the side wall of the installation groove with the continuous pressing of the floating support block, so that the rubber sleeve has sufficient circumferential deformation space, and the risk of early wear or falling of the rubber sleeve due to axial deformation is further reduced.

[0012] Further, the rubber sleeve is provided with a plurality of connecting grooves parallel and perpendicular to the axis of the rubber sleeve on the outer wall, and the middle portions of the two adjacent installation grooves are communicated through the connecting grooves.

[0013] By adopting the technical scheme, the installation groove is a trapezoidal groove, so that the floating support block gradually separates from the side wall of the installation groove during being pressed into the installation groove, which not only can effectively reduce the heat generated by the friction between the floating support block and the installation groove to cause the aging of the rubber bushing or the wear of the floating support block and the rubber sleeve, but also can increase the distance between the floating support block and the side wall of the installation groove with the continuous pressing of the floating support block, so that the rubber sleeve has sufficient circumferential deformation space, and the risk of early wear or falling of the rubber sleeve due to axial deformation is further reduced.

[0014] Further, the rubber sleeve is provided with a plurality of connecting grooves parallel and perpendicular to the axis of the rubber sleeve on the outer wall, and the middle portions of the two adjacent installation grooves are communicated through the connecting grooves.

[0015] By adopting the technical scheme, the installation groove is a trapezoidal groove, so that the floating support block gradually separates from the side wall of the installation groove during being pressed into the installation groove, which not only can effectively reduce the heat generated by the friction between the floating support block and the installation groove to cause the aging of the rubber bushing or the wear of the floating support block and the rubber sleeve, but also can increase the distance between the floating support block and the side wall of the installation groove with the continuous pressing of the floating support block, so that the rubber sleeve has sufficient circumferential deformation space, and the risk of early wear or falling of the rubber sleeve due to axial deformation is further reduced.

[0016] Further, the rubber sleeve is provided with a plurality of connecting grooves parallel and perpendicular to the axis of the rubber sleeve on the outer wall, and the middle portions of the two adjacent installation grooves are communicated through the connecting grooves.

[0017] By adopting the technical scheme, the installation groove is a trapezoidal groove, so that the floating support block gradually separates from the side wall of the installation groove during being pressed into the installation groove, which not only can effectively reduce the heat generated by the friction between the floating support block and the installation groove to cause the aging of the rubber bushing or the wear of the floating support block and the rubber sleeve, but also can increase the distance between the floating support block and the side wall of the installation groove with the continuous pressing of the floating support block, so that the rubber sleeve has sufficient circumferential deformation space, and the risk of early wear or falling of the rubber sleeve due to axial deformation is further reduced.

[0018] The further arrangement of the present application is that the head of the shock absorber mounting bolt is abutted against the end of the shock absorber mounting sleeve through a rubber washer, the rod of the shock absorber mounting bolt is screwed with the vehicle body mounting sleeve after penetrating the shock absorber mounting sleeve, the vehicle body mounting sleeve is provided with a radially extending annular groove near the end of the shock absorber mounting bolt, the annular groove is communicated with the inner cavity of the vehicle body mounting sleeve, and the end of the shock absorber mounting sleeve near the annular groove is axially matched with the bottom surface of the annular groove.

[0019] By adopting the above technical scheme, the head of the shock absorber mounting bolt and the bottom surface of the annular groove are respectively abutted against the two ends of the shock absorber mounting sleeve to form the effect of axial limiting, which not only can effectively prevent the problem of abnormal sound caused by the axial displacement of the shock absorber mounting sleeve and the vehicle body mounting sleeve, but also can greatly reduce the problem of abrasion of other parts caused by the axial movement of the shock absorber mounting sleeve.

[0020] The beneficial effects of the present application are:

[0021] 1. In the rubber bushing of the present application, the floating support part and the rubber sleeve are simultaneously tightly matched with the mounting ring on the upper end of the shock absorber piston rod, and because the floating support block in the floating support part is connected with the bottom of the mounting groove through the compression spring, the floating support block in the floating support part is always tightly attached to the inner wall of the mounting ring on the upper end of the shock absorber piston rod under the elastic force of the compression spring, and when the rubber sleeve and the floating support block are abraded, the floating support block can move radially and tightly attach to the inner wall of the mounting ring under the elastic force of the compression spring, thereby achieving the effect of rapidly compensating the abrasion amount, greatly reducing the frequency of replacing the rubber bushing due to loosening caused by abrasion, and improving the service life of the rubber bushing.

[0022] 2. In the rubber bushing of the present application, the radial deformation between the floating support block of the floating support part and the compression spring can buffer a certain vibration impact, thereby effectively reducing the impact force borne by the rubber sleeve, so that when the amplitude of the body bounce or torsional vibration is small, the floating support part can achieve the effect of rapid shock absorption, and when the amplitude of the body bounce or torsional vibration is large, the floating support block overcomes the elastic force of the compression spring and is pressed into the mounting groove, and at the same time, as the rubber sleeve is extruded, the rubber sleeves on both sides of the mounting groove are extruded into the cavity of the mounting groove, i.e. a certain circumferential deformation is generated, so that the amount of axial deformation of the rubber sleeve is greatly reduced, thereby greatly reducing the problem of early abrasion or falling of the rubber bushing caused by large axial deformation of the rubber bushing, and further improving the service life of the rubber bushing.

[0023] 3. The mounting groove of the floating support block in the application is a trapezoidal groove, so that the floating support block gradually separates from the side wall of the mounting groove during being pressed into the mounting groove, which not only can effectively reduce the heat generated by the friction between the floating support block and the mounting groove to cause the aging of the rubber bushing or the wear of the floating support block and the rubber sleeve, but also can make the distance between the floating support block and the side wall of the mounting groove increase continuously as the floating support block is continuously pressed in, so that the rubber sleeve has enough circumferential deformation space, further reducing the risk of early wear or falling off of the rubber sleeve due to axial deformation.

[0024] 4. The setting of the connecting grooves in the application makes the mounting grooves communicate with each other, which not only can ensure that the rubber sleeve can deform along the direction of the extrusion force into the space of the connecting groove after being extruded, but also can divide the rubber sleeve into multiple independent deformation areas, so that the rubber sleeve will not deform axially as a whole, nor will it relatively rub with the inner wall of the shock absorber piston rod upper end mounting ring as a whole, effectively reducing the wear rate of the rubber sleeve, further improving the service life of the rubber sleeve, and also being beneficial to the rapid heat dissipation of the rubber sleeve, greatly reducing the aging rate of the rubber sleeve.

[0025] 5. The setting of the heat dissipation hole penetrating the metal cylinder at the bottom of the mounting groove in the application utilizes the heat dissipation hole to dissipate the heat generated by the torsional vibration of the rubber sleeve, the metal cylinder and the shock absorber mounting bolt during the body bouncing, thereby further reducing the risk of damage or falling off of the metal cylinder and the rubber sleeve fixing glue due to the decline of the adhesion performance caused by heating, greatly improving the service life of each part.

[0026] 6. The effect of the head of the shock absorber mounting bolt and the bottom surface of the annular groove respectively abutting against the two ends of the shock absorber mounting sleeve to form axial limiting in the application, not only can effectively prevent the problem of abnormal noise caused by the axial displacement of the shock absorber mounting sleeve and the vehicle body mounting sleeve, but also can greatly reduce the problem of wear of other parts caused by the axial movement of the shock absorber mounting sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0028] Figure 1 is an axial cross-sectional structure schematic diagram of a shock absorber mounting structure of a motor home according to the application.

[0029] Figure 2 is a radial cross-sectional structure schematic diagram of a shock absorber mounting structure of a motor home according to the application.

[0030] Figure 3 yes Figure 2 Schematic diagram of the locally enlarged structure of A in the middle.

[0031] Figure 4 The present invention is a schematic diagram of the external structure of a rubber sleeve in a rubber bushing of a shock absorbing device of a recreational vehicle.

[0032] Figure 5 The utility model is an installation structure of an existing shock absorbing device.

[0033] In the figure, 10, vehicle body longitudinal beam; 20, vehicle body mounting sleeve; 30, mounting ring; 40, rubber bushing; 50, shock absorber mounting sleeve; 60, shock absorber; 70, shock absorber mounting bolt; 701, head; 702, rod; 80, rubber sleeve; 90, metal cylinder; 100, floating support portion; 101, floating support block; 102, mounting groove; 103, compression spring; 110, connecting groove; 120, heat dissipation hole; 130, rubber gasket; 140, annular groove. DETAILED DESCRIPTION

[0034] The technical solutions of the present invention will be described clearly and completely below with reference to specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0035] like Figures 1 to 4 As shown, a shock absorbing device of a recreational vehicle includes: a body mounting sleeve 20 that cooperates with a body longitudinal beam 10, a rubber bushing 40 that cooperates with a mounting ring 30 at the upper end of a shock absorber piston rod, a shock absorber mounting sleeve 50 that cooperates with the rubber bushing 40, and a shock absorber mounting bolt 70 for mounting a shock absorber 60 on the body mounting sleeve 20, the rubber bushing 40 includes a rubber sleeve 80 and a metal cylinder 90 that are fixedly glued together, a plurality of floating support parts 100 are evenly distributed circumferentially on the outer wall of the rubber sleeve 80, the floating support part 100 includes a floating support block 101 and a mounting groove 102 for mounting the floating support block 101, the mounting groove 102 is arranged on the outer wall of the rubber sleeve 80, the floating support block 101 is radially slidably matched with the mounting groove 102, and the floating support block 101 is connected to the bottom of the mounting groove 102 through a compression spring 103.

[0036] Furthermore, the mounting groove 102 is a trapezoidal groove, and the width of the side of the mounting groove 102 close to the center of the rubber sleeve 80 is greater than the width of the side of the mounting groove 102 away from the center of the rubber sleeve 80 .

[0037] Further, the outer wall of the rubber sleeve 80 is provided with a plurality of connecting grooves 110 parallel and perpendicular to the axis of the rubber sleeve 80, and the middle part of the two adjacent mounting grooves 102 is communicated through the connecting grooves 110.

[0038] Further, the floating support block 101 is made of the same material as the rubber sleeve 80.

[0039] Further, the bottom of the mounting groove 102 is provided with a heat dissipation hole 120 penetrating the metal cylinder 90.

[0040] Further, the head 701 of the shock absorber mounting bolt 70 is abutted against the end of the shock absorber mounting sleeve 50 through the rubber washer 130, the rod 702 of the shock absorber mounting bolt 70 is screwed with the vehicle body mounting sleeve 20 after penetrating the shock absorber mounting sleeve 50, the end of the vehicle body mounting sleeve 20 close to the head 701 of the shock absorber mounting bolt 70 is provided with a radially extending annular groove 140, the annular groove 140 is communicated with the inner cavity of the vehicle body mounting sleeve 20, and the end of the shock absorber mounting sleeve 50 close to the annular groove 140 is axially matched with the annular groove 140 and abuts against the bottom surface of the annular groove 140.

[0041] The working principle of the present application is that the floating support part 100 in the rubber bushing 40 and the rubber sleeve 80 are tightly matched with the mounting ring 30 on the upper end of the shock absorber piston rod, and the floating support block 101 in the floating support part 100 is connected with the bottom of the mounting groove 102 through the compression spring 103, so that the floating support block 101 in the floating support part 100 is always tightly attached to the inner wall of the mounting ring 30 on the upper end of the shock absorber piston rod under the elastic force of the compression spring 103, when the rubber sleeve 80 and the floating support block 101 are worn out, the floating support block 101 can move radially and tightly attach to the inner wall of the mounting ring 30 under the elastic force of the compression spring 103, achieving the effect of quickly compensating the wear amount, greatly reducing the frequency of replacing the rubber bushing 40 due to wear and tear, and improving the service life of the rubber bushing 40.

[0042] In addition, the radial deformation between the floating support block 101 of the floating support portion 100 and the compression spring 103 in the rubber bushing 40 can buffer a certain vibration impact, thereby effectively reducing the impact force borne by the rubber sleeve 80. Therefore, when the vehicle body bounces or the torsional vibration amplitude is small, the floating support portion 100 alone can achieve a rapid shock absorption effect. When the vehicle body bounces or the torsional vibration amplitude is large, the floating support block 101 overcomes the elastic force of the compression spring 103 and is pressed into the installation groove 102. At the same time, as the rubber sleeve 80 is squeezed, the rubber sleeves 80 on both sides of the installation groove 102 will be squeezed into the cavity of the installation groove 102, that is, a certain circumferential deformation is generated, thereby greatly reducing the amount of axial deformation of the rubber sleeve 80, thereby greatly reducing the problem of premature wear or falling off of the rubber bushing 40 due to large axial deformation, and further improving the service life of the rubber bushing 40.

[0043] The connection grooves 110 are provided so that the mounting grooves 102 are interconnected. This not only ensures that the rubber sleeve 80 can deform toward the space in the connection grooves 110 in the direction of the extrusion force after being squeezed, but also divides the rubber sleeve 80 into multiple independent deformation areas, so that the rubber sleeve 80 will not be axially deformed as a whole, and will not rub against the inner wall of the mounting ring 30 at the upper end of the shock absorber piston rod as a whole, effectively reducing the wear rate of the rubber sleeve 80, further increasing the service life of the rubber sleeve 80, and also facilitating rapid heat dissipation of the rubber sleeve 80, greatly reducing the aging rate of the rubber sleeve 80.

[0044] By providing a metal tube 90 penetrating the metal tube 90 at the bottom of the mounting groove 102, the metal tube 90 is used to dissipate heat generated by torsional vibration of the rubber sleeve 80, the metal tube 90, and the shock absorber mounting bolt 70 during vehicle body bouncing, thereby further reducing the risk of damage or falling off due to degradation of the adhesive fixing the metal tube 90 and the rubber sleeve 80 due to heat, thereby greatly improving the service life of each component.

[0045] The head 701 of the shock absorber mounting bolt 70 and the bottom surface of the annular groove 140 respectively abut the two ends of the shock absorber mounting sleeve 50 to form an axial limiting effect, which can not only effectively prevent the problem of abnormal noise caused by axial displacement of the shock absorber mounting sleeve 50 and the vehicle body mounting sleeve 20, but also greatly reduce the problem of wear of other parts caused by axial movement of the shock absorber mounting sleeve 50.

Claims

1. A shock absorbing device for a recreational vehicle, comprising: A vehicle body mounting sleeve (20) matched with a vehicle body longitudinal beam (10), a rubber bushing (40) matched with a mounting ring (30) on the upper end of a shock absorber piston rod, a shock absorber mounting sleeve (50) matched with the rubber bushing (40), and a shock absorber mounting bolt (70) for mounting a shock absorber (60) on the vehicle body mounting sleeve (20), characterized in that the rubber bushing (40) comprises a fixedly glued rubber sleeve (80) and a metal cylinder (90), a plurality of floating support portions (100) are evenly distributed on the outer wall of the rubber sleeve (80) in the circumferential direction, the floating support portion (100) comprises a floating support block (101) and a mounting groove (102) for mounting the floating support block (101), the mounting groove (102) is arranged on the outer wall of the rubber sleeve (80), the floating support block (101) is in radial sliding fit with the mounting groove (102), and the floating support block (101) is connected with the bottom of the mounting groove (102) through a compression spring (103). The mounting groove (102) is a trapezoidal groove, and the width of one side of the mounting groove (102) close to the center of the rubber sleeve (80) is greater than the width of the other side of the mounting groove (102) away from the center of the rubber sleeve (80). A plurality of connecting grooves (110) parallel and perpendicular to the axis of the rubber sleeve (80) are further arranged on the outer wall of the rubber sleeve (80), and the middle portions of two adjacent mounting grooves (102) are communicated through the connecting grooves (110).

2. The shock absorber of claim 1, wherein: The floating support block (101) is made of the same material as the rubber sleeve (80).

3. The shock absorber of claim 1, wherein: The bottom of the mounting groove (102) is further provided with a heat dissipation hole (120) penetrating through the metal cylinder (90).

4. The shock absorber of claim 1, wherein: The head portion (701) of the shock absorber mounting bolt (70) abuts against the end portion of the shock absorber mounting sleeve (50) through a rubber gasket (130), the rod portion (702) of the shock absorber mounting bolt (70) is in threaded connection with the vehicle body mounting sleeve (20) after penetrating through the shock absorber mounting sleeve (50), one end of the vehicle body mounting sleeve (20) close to the head portion (701) of the shock absorber mounting bolt (70) is provided with a radially extending annular groove (140) in communication with the inner cavity of the vehicle body mounting sleeve (20), and one end of the shock absorber mounting sleeve (50) close to the annular groove (140) is in axial fit with the annular groove (140) and abuts against the bottom surface of the annular groove (140).

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