Air suspension limiting mechanism capable of bearing lateral force

Abstract

The utility model relates to an air suspension limiting mechanism capable of bearing lateral force, which comprises a bottom fixing disc, a top fixing disc and a buffer air bag, the bottom fixing disc is fixed on a bottom fixing disc on a guide arm, the top fixing disc is fixed on a frame and is positioned right above the bottom fixing disc, and the buffer air bag is fixed on the top fixing disc. The buffering air bag is arranged between the bottom fixing disc and the top fixing disc, the bottom of the buffering air bag is fixed to the bottom fixing disc, the top of the buffering air bag is fixed to the top fixing disc, and a first connecting arm is universally hinged to the upper surface of the bottom fixing disc through a first connector; and a second connecting arm is universally hinged to the lower surface of the top fixing disc opposite to the first connecting arm through a second connector. The limiting mechanism provided by the utility model can be adaptively bent when being integrally subjected to lateral force, the deformation has restorability, the limiting mechanism is prevented from irreversible deformation to influence the limiting of the buffer air bag, the hinging is universal hinging, the limiting mechanism can adapt to lateral force in different directions, and the adaptability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of air suspensions, in particular to an air suspension limiting mechanism capable of bearing lateral forces. Background Art

[0002] The cushion airbag is one of the core components of the air suspension. The cushion airbag is an airtight container made of special materials for storing compressed air or gas. These airbags are usually located near each wheel of the vehicle. As part of the suspension system, when the airbags are inflated, they can support the weight of the vehicle and provide the required suspension height and hardness.

[0003] The air suspension airbag limiter is a device used to control the travel range of the airbag in the air suspension system. The limiter can prevent the airbag from being damaged due to excessive jumping or excessive pressing. The limiter of the air suspension in traditional small and medium-sized cars is generally realized by using a shock absorber or an additional limiter rope. However, the shock absorber or the additional limiter rope cannot withstand additional lateral force. When subjected to excessive lateral force, it is easy to bend irreversibly, which will affect the normal limit of the airbag. Utility Model Content

[0004] The utility model aims to provide an air suspension limiting mechanism capable of bearing lateral force, which effectively solves the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions.

[0006] An air suspension limit mechanism capable of withstanding lateral forces comprises a bottom fixing plate, a top fixing plate and a buffer airbag, wherein the bottom fixing plate is fixed to the bottom fixing plate on a guide arm, the top fixing plate is fixed to a vehicle frame and is located directly above the bottom fixing plate, the buffer airbag is arranged between the bottom fixing plate and the top fixing plate, the bottom of the buffer airbag is fixed to the bottom fixing plate, the top of the buffer airbag is fixed to the top fixing plate, a first connecting arm is universally hingedly mounted on the upper surface of the bottom fixing plate through a first connector, and a second connector is universally hingedly mounted on the lower surface of the top fixing plate at a position directly opposite to the first connecting arm A second connecting arm is installed, a vertically extending sliding hole cavity is provided in the first connecting arm, a guide hole extending vertically and communicating with the outside is provided on the top wall of the sliding hole cavity, the diameter of the guide hole is smaller than the diameter of the sliding hole cavity, a telescopic rod is slidably installed in the guide hole, the top end of the telescopic rod is universally hinged with the bottom end of the second connecting arm through a third connector, a circular limit block is fixed to the end of the telescopic rod extending into the sliding hole cavity, the peripheral surface of the circular limit block is slidably fitted with the inner wall of the sliding hole cavity, the upper end of the circular limit block is in conflict with the top wall of the sliding hole cavity, and the lower end of the circular limit block is in conflict with the bottom wall of the sliding hole cavity.

[0007] Furthermore, the third connector includes a third base, a third sphere, a third connecting arm and a connecting disk. The third base is fixed to the lower end of the second connecting arm. A third ball groove that penetrates the outside is provided below the third base. The third sphere is embedded and installed in the third ball groove and can roll universally in the third ball groove. The third sphere part is outside to the outside of the third ball groove. The connecting disk is fixed to the top of the telescopic rod, the top of the third connecting arm is fixed to the exposed part of the third sphere, and the bottom end of the third connecting arm is fixed to the upper surface of the connecting disk.

[0008] Furthermore, a spring is sleeved on the outside of the third connecting arm, one end of the spring is fixed to the lower end surface of the third base, and the other end is fixed to the upper surface of the connecting disk.

[0009] Furthermore, the first connector includes a first base, a first sphere and a first connecting rod. The first base is fixed on the upper surface of the bottom fixed plate. A first ball groove that penetrates the outside is provided above the first base. The first sphere is embedded and installed in the first ball groove and can roll universally in the first ball groove. Part of the first sphere is exposed to the outside of the first ball groove. The first connecting rod is fixed at the bottom end of the first connecting arm, and the bottom end of the first connecting rod is fixedly connected to the exposed part of the first sphere.

[0010] Furthermore, the second connector includes a second base, a second sphere and a second connecting rod. The second base is fixed to the lower surface of the top fixed plate. A second ball groove that penetrates the outside is provided under the second base. The second sphere is embedded and installed in the second ball groove and can roll universally in the second ball groove. Part of the second sphere is exposed to the outside of the second ball groove. The second connecting rod is fixed to the top of the second connecting arm, and the top of the second connecting rod is fixedly connected to the exposed part of the second sphere.

[0011] Furthermore, a plurality of annular grooves are evenly distributed on the outer wall of the circular limit block, and a rubber sealing ring is embedded and fixed in each annular groove. Each rubber sealing ring is squeezed and fitted with the inner wall of the sliding cavity, and the sliding cavity is filled with buffer gas above and below the circular limit block.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0013] 1. The first connecting arm in the utility model is universally hinged to the bottom fixed plate through the first connector, the second connecting arm is universally hinged to the top fixed plate through the second connector, and the second connecting arm is universally hinged to the telescopic rod through the third connector. Therefore, when the limiting mechanism as a whole is subjected to lateral force, adaptive bending deformation can occur, and the deformation is recoverable, thereby avoiding irreversible deformation of the limiting mechanism and affecting the limiting of the cushioning airbag. In addition, the hinge is a universal hinge, which can adapt to lateral forces in different directions and has good adaptability.

[0014] 2. The utility model arranges a spring on the outside of the third connecting arm, with both ends of the spring being fixed to the connecting plate and the third base respectively. When the spring is bent by a lateral force, the spring is forced to bend and deform and store force. After the lateral force disappears, the spring elastic force can drive the bending of the limiting mechanism to automatically reset, thereby ensuring that the limiting of the cushioning airbag can return to normal.

[0015] 3. The utility model fixes an annular groove on the outer circumference of the circular limit block that slides in contact with the inner wall of the sliding hole. When the circular limit block slides up and down along the inner wall of the sliding hole, a piston effect is formed, and buffer gas is filled in the sliding hole at the upper and lower positions of the circular limit block. When the telescopic rod drives the circular limit block to move up and down, the circular limit block and the rubber sealing ring compress the gas to achieve a buffer effect, thereby providing effective protection for the entire limit mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the local structure between two fixed disks in the utility model;

[0018] Figure 3 This is a schematic diagram of the installation of the telescopic rod structure in the utility model;

[0019] Figure 4 is a detailed structural diagram of the third connector in the utility model;

[0020] Figure 5 It is a detailed structural diagram of the first connector in the utility model;

[0021] Figure 6 It is a detailed structural diagram of the second connector in the utility model.

[0022] In the figure: 1. bottom fixing plate; 2. top fixing plate; 3. cushioning airbag; 4. first connector; 41. first base; 411. first ball groove; 42. first sphere; 43. first connecting rod; 5. second connector; 51. second base; 511. second ball groove; 52. second sphere; 53. second connecting rod; 6. first connecting arm; 61. sliding hole; 62. guide hole; 7. telescopic rod; 71. circular limit block; 721. annular groove; 722. rubber sealing ring; 8. second connecting arm; 9. third connector; 91. third base; 911. third ball groove; 92. third sphere; 93. third connecting arm; 931. spring; 94. connecting plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 6 The utility model provides an air suspension limiting mechanism capable of withstanding lateral force, comprising a bottom fixing plate 1, a top fixing plate 2 and a buffer airbag 3, wherein the bottom fixing plate 1 is fixed to the bottom fixing plate 1 on the guide arm, the top fixing plate 2 is fixed to the frame and is located directly above the bottom fixing plate 1, the buffer airbag 3 is arranged between the bottom fixing plate 1 and the top fixing plate 2, the bottom of the buffer airbag 3 is fixed to the bottom fixing plate 1, and the top is fixed to the top fixing plate 2, the upper surface of the bottom fixing plate 1 is universally hingedly installed with a first connecting arm 6 through a first connector 4, and the lower surface of the top fixing plate 2 is universally hingedly installed with a second connector 5 at a position directly opposite to the first connecting arm 6. Two connecting arms 8, a vertically extending sliding hole 61 is provided in the first connecting arm 6, and a guide hole 62 extending vertically and communicating with the outside is provided on the top wall of the sliding hole 61, the aperture of the guide hole 62 is smaller than the aperture of the sliding hole 61, and a telescopic rod 7 is slidably installed in the guide hole 62, and the top of the telescopic rod 7 is universally hinged with the bottom end of the second connecting arm 8 through the third connector 9, and a circular limit block 71 is fixed to the end of the telescopic rod 7 extending into the sliding hole 61, and the peripheral surface of the circular limit block 71 is slidably fitted with the inner wall of the sliding hole 61, the upper end of the circular limit block 71 is in conflict with the inner top wall of the sliding hole 61, and the lower end of the circular limit block 71 is in conflict with the inner bottom wall of the sliding hole 61.

[0025] The bottom fixing plate 1 is fixed on the guide arm, the top fixing plate 2 is fixed on the frame, and the buffer airbag 3 is fixed between the bottom fixing plate 1 and the top fixing plate 2. The buffer airbag 3 is inflated and deflated to adjust the expansion degree, so as to change the distance between the frame and the guide arm and realize the adjustment of the suspension height. When encountering a pothole section, when the buffer airbag 3 is compressed, the telescopic rod 7 and the circular limit block 71 are forced to slide into the depth of the sliding cavity 61 until the circular limit block 71 is compressed. When the bottom of the positioning block 71 abuts against the bottom wall of the sliding hole 61, it can stop the telescopic rod 7 from continuing to slide down, thereby providing a limiting effect on the cushioning airbag 3 to prevent the cushioning airbag 3 from being damaged by excessive compression; when the cushioning airbag 3 jumps up, the telescopic rod 7 and the circular limiting block 71 will slide upward until the upper end of the circular limiting block 71 abuts against the top wall of the sliding hole 61, preventing the telescopic rod 7 from continuing to move upward, thereby providing a limiting effect on the cushioning airbag 3 to prevent the cushioning airbag 3 from excessively jumping up and being pulled off, thereby achieving a limit on the stroke of the cushioning airbag 3.

[0026] In addition, the first connecting arm 6 is universally hinged to the bottom fixed plate 1 through the first connector 4, the second connecting arm 8 is universally hinged to the top fixed plate 2 through the second connector 5, and the second connecting arm 8 is universally hinged to the telescopic rod 7 through the third connector 9. Therefore, when the limiting mechanism as a whole is subjected to lateral force, adaptive bending deformation can occur, and the deformation is recoverable, thereby avoiding irreversible deformation of the limiting mechanism and affecting the limiting of the cushioning airbag 3. In addition, the hinge is a universal hinge, which can adapt to lateral forces in different directions and has good adaptability.

[0027] Specifically, the third connector 9 includes a third base 91, a third sphere 92, a third connecting arm 93 and a connecting disk 94. The third base 91 is fixed to the lower end of the second connecting arm 8. A third ball groove 911 that is connected to the outside is provided below the third base 91. The third sphere 92 is embedded in the third ball groove 911 and can roll universally in the third ball groove 911. Part of the third sphere 92 is external to the outside of the third ball groove 911. The connecting disk 94 is fixed to the top of the telescopic rod 7. The top of the third connecting arm 93 is fixed to the exposed part of the third sphere 92, and the bottom of the third connecting arm 93 is fixed to the upper surface of the connecting disk 94. By rolling the third sphere 92 in the third ball groove 911, combined with the connecting action of the third base 91, the third connecting arm 93 and the connecting disk 94, the effect of a universal ball joint is formed between the second connecting arm 8 and the telescopic rod 7, thereby enabling the universal articulation of the second connecting arm 8 and the telescopic rod 7 to be achieved.

[0028] Specifically, a spring 931 is sleeved on the outside of the third connecting arm 93, one end of the spring 931 is fixed to the lower end surface of the third base 91, and the other end is fixed to the upper surface of the connecting plate 94. By sleeved on the outside of the third connecting arm 93 with the spring 931 fixed to the connecting plate 94 and the third base 91 at both ends, when the spring 931 is bent by a lateral force, the spring 931 is forced to bend and deform and accumulate force. After the lateral force disappears, the elastic force of the spring 931 can drive the bending of the limiting mechanism to automatically reset, thereby ensuring that the limit of the buffer airbag 3 can return to normal.

[0029] Specifically, the first connector 4 includes a first base 41, a first sphere 42 and a first connecting rod 43. The first base 41 is fixed on the upper surface of the bottom fixed plate 1. A first ball groove 411 that penetrates the outside is provided above the first base 41. The first sphere 42 is embedded and installed in the first ball groove 411, and can roll universally in the first ball groove 411. Part of the first sphere 42 is exposed to the outside of the first ball groove 411. The first connecting rod 43 is fixed to the bottom end of the first connecting arm 6, and the bottom end of the first connecting rod 43 is fixedly connected to the exposed part of the first sphere 42. By rolling the first sphere 42 in the first ball groove 411, combined with the connection function of the first base 41 and the first connecting rod 43, the effect of a universal ball joint is formed between the first connecting arm 6 and the bottom fixed plate 1, thereby enabling the universal hinge of the first connecting arm 6 and the bottom fixed plate 1 to be realized.

[0030] Specifically, the second connector 5 includes a second base 51, a second sphere 52 and a second connecting rod 53. The second base 51 is fixed on the lower surface of the top fixed plate 2. A second ball groove 511 that penetrates the outside is provided below the second base 51. The second sphere 52 is embedded and installed in the second ball groove 511, and can roll universally in the second ball groove 511. Part of the second sphere 52 is exposed to the outside of the second ball groove 511. The second connecting rod 53 is fixed to the top of the second connecting arm 8, and the top of the second connecting rod 53 is fixedly connected to the exposed part of the second sphere 52. By rolling the second sphere 52 in the second ball groove 511, combined with the connection between the second base 51 and the second connecting rod 53, the effect of a universal ball joint is formed between the second connecting arm 8 and the top fixed plate 2, thereby enabling the universal hinge of the second connecting arm 8 and the top fixed plate 2 to be realized.

[0031] Specifically, a plurality of annular grooves 721 are evenly distributed on the outer wall of the circular limit block 71, and a rubber sealing ring 722 is embedded and fixed in each annular groove 721. Each rubber sealing ring 722 is squeezed and fitted with the inner wall of the sliding hole cavity 61, and the sliding hole cavity 61 is filled with buffer gas at the upper and lower parts of the circular limit block 71. The annular grooves 721 that slide in contact with the inner wall of the sliding hole cavity 61 are fixed on the outer periphery of the circular limit block 71. When the circular limit block 71 slides up and down along the inner wall of the sliding hole cavity 61, a piston effect is formed, and buffer gas is filled at the upper and lower parts of the circular limit block 71 in the sliding hole cavity 61. When the telescopic rod 7 drives the circular limit block 71 to move up and down, the circular limit block 71 and the rubber sealing ring 722 compress the gas to achieve a buffering effect, thereby providing effective protection for the entire limiting mechanism.

[0032] The above is a detailed description of the utility model in combination with specific embodiments, and it cannot be determined that the specific implementation methods of the present invention are limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, making several equivalent substitutions or obvious modifications without departing from the concept of the present invention, and having the same performance or use, should be regarded as belonging to the patent protection scope of the utility model determined by the submitted claims.

Claims

1. An air suspension limiter mechanism capable of withstanding lateral forces, comprising a bottom fixing plate (1), a top fixing plate (2) and a buffer airbag (3), Features: The bottom fixing plate (1) is fixed to the bottom fixing plate (1) on the guide arm, the top fixing plate (2) is fixed to the frame and is located directly above the bottom fixing plate (1), the buffer airbag (3) is arranged between the bottom fixing plate (1) and the top fixing plate (2), the bottom of the buffer airbag (3) is fixed to the bottom fixing plate (1), and the top is fixed to the top fixing plate (2); A first connecting arm (6) is universally hingedly mounted on the upper surface of the bottom fixing plate (1) via a first connector (4), and a second connecting arm (8) is universally hingedly mounted on the lower surface of the top fixing plate (2) at a position directly opposite to the first connecting arm (6) via a second connector (5); A vertically extending sliding cavity (61) is provided in the first connecting arm (6), and a vertically extending guide hole (62) is provided on the top wall of the sliding cavity (61), the guide hole (62) being connected to the outside, and the diameter of the guide hole (62) being smaller than the diameter of the sliding cavity (61); A telescopic rod (7) is slidably installed in the guide hole (62), and the top end of the telescopic rod (7) is universally hinged to the bottom end of the second connecting arm (8) via a third connector (9); A circular stop block (71) is fixed to the end of the telescopic rod (7) extending into the sliding hole (61); the circumferential surface of the circular stop block (71) is slidably fitted with the inner wall of the sliding hole (61); the upper end of the circular stop block (71) is in contact with the inner top wall of the sliding hole (61); and the lower end of the circular stop block (71) is in contact with the inner bottom wall of the sliding hole (61).

2. An air suspension limiter mechanism capable of withstanding lateral forces according to claim 1, Features: The third connector (9) comprises a third base (91), a third sphere (92), a third connecting arm (93) and a connecting disk (94); The third base (91) is fixed to the lower end of the second connecting arm (8); a third ball groove (911) which is connected to the outside is provided below the third base (91); the third ball (92) is embedded and installed in the third ball groove (911) and can roll universally in the third ball groove (911); a portion of the third ball (92) is external to the outside of the third ball groove (911); The connecting plate (94) is fixed to the top end of the telescopic rod (7), the top end of the third connecting arm (93) is fixed to the exposed portion of the third sphere (92), and the bottom end of the third connecting arm (93) is fixed to the upper surface of the connecting plate (94).

3. The air suspension limiter mechanism capable of withstanding lateral force according to claim 2, Features: The third connecting arm (93) is externally sleeved with a spring (931), one end of the spring (931) being fixed to the lower end surface of the third base (91), and the other end being fixed to the upper surface of the connecting plate (94).

4. The air suspension limiter mechanism capable of withstanding lateral force according to claim 1, Features: The first connector (4) comprises a first base (41), a first sphere (42) and a first connecting rod (43); The first base (41) is fixed to the upper surface of the bottom fixed plate (1); a first ball groove (411) is provided above the first base (41) and is connected to the outside; the first ball (42) is embedded and installed in the first ball groove (411) and can roll universally in the first ball groove (411); a portion of the first ball (42) is exposed outside the first ball groove (411); The first connecting rod (43) is fixed to the bottom end of the first connecting arm (6), and the bottom end of the first connecting rod (43) is fixedly connected to the exposed portion of the first sphere (42).

5. The air suspension limiting mechanism capable of withstanding lateral force according to claim 1, Features: The second connector (5) comprises a second base (51), a second sphere (52) and a second connecting rod (53); The second base (51) is fixed to the lower surface of the top fixed plate (2); a second ball groove (511) which is connected to the outside is provided below the second base (51); the second ball (52) is embedded and installed in the second ball groove (511) and can roll universally in the second ball groove (511); a portion of the second ball (52) is exposed outside the second ball groove (511); The second connecting rod (53) is fixed to the top end of the second connecting arm (8), and the top end of the second connecting rod (53) is fixedly connected to the exposed portion of the second sphere (52).

6. The air suspension limiter mechanism capable of withstanding lateral force according to claim 1, Features: A plurality of annular grooves (721) are evenly distributed on the outer wall of the circular limit block (71), a rubber sealing ring (722) is embedded and fixed in each of the annular grooves (721), and each of the rubber sealing rings (722) is pressed and fitted with the inner wall of the sliding cavity (61); The sliding cavity (61) is filled with buffer gas both above and below the circular limiting block (71).

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