Integrated air spring shock absorber

Abstract

The utility model relates to an integrated air spring shock absorber, comprising a casing, a limiting sleeve embedded in an opening at the top of the casing, and a movable sleeve movably inserted in the limiting sleeve and the casing and elastically resettable, wherein a guide groove is formed on the outer wall of the movable sleeve; the utility model also comprises a height control valve arranged between the casing, the limiting sleeve and the movable sleeve, wherein the height control valve comprises a seat block, a detachable pressure plate fixed on the outer side of the seat block, a hollow sealing gasket arranged between the seat block and the pressure plate so as to seal the seat block and the pressure plate to each other, a swing arm rotatably connected to the outer side of the seat block, and a guide column laterally and rotatably connected to the inner side of the upper end of the swing arm and located above the seat block; the utility model simplifies the processing steps to achieve the effect of saving time and labor and improve the installation efficiency, and effectively avoids the deviation of the installation position of the height control valve, thereby ensuring the working accuracy of the height control valve.

Description

Technical Field

[0001] The utility model relates to an integrated air spring shock absorber. Background Art

[0002] Air spring shock absorbers are widely used in self-adjusting air suspensions of commercial vehicles, buses, rail vehicles, machinery and equipment, and building bases. Air spring shock absorbers have significant advantages over ordinary steel spring shock absorbers: relatively slow speed, small dynamic force change (generally within 1:1.2), and easy control; air spring shock absorbers are composed of an air spring body, an additional air chamber, a height control valve, a differential pressure valve, and a dust filter. The height control valve can dynamically sense the height change of the vehicle and complete the intake or exhaust action in time to adjust the height of the air spring, improve the comfort of the driver and passengers, and prevent the road surface from being damaged by the impact of the wheels.

[0003] The existing height control valve is usually independently installed on the outside of the air spring housing. Before assembly, the housing must be grooved, drilled, and other operations must be performed to process an installation area suitable for the height control valve and holes for connection and fixation, and then the height control valve is installed on the housing. Therefore, the processing steps are relatively cumbersome, time-consuming and labor-intensive, resulting in low installation efficiency. In addition, operations such as grooving and drilling holes will produce large dimensional errors, which will lead to deviations in the installation position of the height control valve, thereby affecting the working accuracy of the height control valve, which needs further improvement. Utility Model Content

[0004] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide an integrated air spring shock absorber which simplifies the processing steps to achieve the effect of saving time and labor and improving the installation efficiency, and effectively avoids the deviation of the installation position of the height control valve to ensure the working accuracy of the height control valve.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: an integrated air spring shock absorber, including a casing, a limit sleeve embedded in the top opening of the casing, and a movable sleeve movably inserted in the limit sleeve and the casing and elastically resettable, and a guide groove is formed on the outer wall of the movable sleeve, characterized in that:

[0006] It also includes a height control valve disposed between the sleeve shell, the limit sleeve and the movable sleeve, the height control valve including a seat block, a detachable pressure plate fixed to the outside of the seat block, a hollow sealing gasket disposed between the seat block and the pressure plate to seal the seat block and the pressure plate to each other, a swing arm rotatably connected to the outside of the seat block, and a guide column laterally and rotatably connected to the inner side of the upper end of the swing arm and located above the seat block, the end of the guide column is formed with a guide block outwardly, and the guide block is movably embedded in the guide groove;

[0007] A concave cavity is formed on the outer side of the seat block, the hollow sealing gasket is embedded in the concave cavity, and a first convex block and a second convex block are formed on the bottom surface of the concave cavity, which are respectively arranged on the left and right sides, and a third convex block and a fourth convex block are respectively located below the first convex block and the second convex block;

[0008] The hollow sealing gasket is provided with a first sealing cavity, a second sealing cavity, a third sealing cavity and a fourth sealing cavity respectively cooperating with the first bump, the second bump, the third bump and the fourth bump, and the first bump, the second bump, the third bump and the fourth bump are respectively embedded in the first sealing cavity, the second sealing cavity, the third sealing cavity and the fourth sealing cavity;

[0009] The first protrusion, the second protrusion, the third protrusion and the fourth protrusion are respectively provided with a first guide groove, a second guide groove, a third guide groove and a fourth guide groove on their end surfaces;

[0010] The pressure plate is provided with a first air vent, a second air vent, a third air vent, a fourth air vent and a fifth air vent. The first air vent and the second air vent are interconnected with the interior of the first guide groove, the third air vent is interconnected with the interior of the second guide groove, the fourth air vent is interconnected with the interior of the fourth guide groove, and the fifth air vent is interconnected with the interior of the third guide groove.

[0011] Preferably, two vertically arranged and left-right distributed bosses are formed downward at the bottom of the seat block, a first countersunk hole is opened at the center of the ends of the two bosses, a second countersunk hole is opened at the center of the bottom surface of the first countersunk hole, and a third countersunk hole is opened at the center of the bottom surface of the second countersunk hole.

[0012] Preferably, a sixth vent hole is provided between the bottom surface of the first guide groove and the inner wall of a third countersunk hole on the left, a seventh vent hole is provided between the bottom surface of the third guide groove and the inner wall of a third countersunk hole on the left, an eighth vent hole is provided between the bottom surface of the second guide groove and the inner wall of a third countersunk hole on the right, and a ninth vent hole is provided between the bottom surface of the fourth guide groove and the inner wall of a third countersunk hole on the right.

[0013] Preferably, a stopper is fixed on the inner side of the lower end of the swing arm, a sealing sheet is fixed between the stopper and the swing arm, a groove is provided on the inner outer wall of the stopper, and a tenth ventilation hole is provided between the bottom surface of the groove and the outer outer wall of the stopper.

[0014] Preferably, a positioning sleeve is formed downward at the bottom of the limit sleeve, a positioning notch is formed on one side of the positioning sleeve, the seat block is arranged in the positioning notch, and two positioning countersunk holes symmetrically distributed on the left and right are also formed at the bottom of the limit sleeve. Correspondingly, two vertically arranged positioning pins are formed upward at the top of the seat block, and the two positioning pins are respectively inserted in the two positioning countersunk holes.

[0015] Preferably, two vertically arranged support columns are formed upward on the inner wall of the sleeve and are symmetrically arranged below the seat block, and the ends of the two protruding columns are respectively pressed against the ends of the two support columns.

[0016] Preferably, a first step column is concentrically arranged upwardly formed at the center of the end of the two support columns, and the two first step columns are respectively inserted into the two first countersunk holes; a second step column is concentrically arranged upwardly formed at the center of the end of the two first step columns, and the two second step columns are respectively inserted into the two second countersunk holes.

[0017] Preferably, an air passage is provided between the end faces of the two second step columns and the bottom outer wall of the casing, and the upper end openings of the two air passages are respectively communicated with the openings of the two third countersunk holes.

[0018] Preferably, a connector is inserted into the lower openings of the two air passages.

[0019] Preferably, a locking groove is provided on both sides of the seat block, and a U-shaped buckle is embedded in each of the two locking grooves. The two ends of each U-shaped buckle are respectively clamped on the inner outer wall of the seat block and the outer outer wall of the pressure plate to fix the seat block and the pressure plate to each other.

[0020] Compared with the prior art, the advantages of the utility model are: the utility model integrates the height control valve inside the air spring, and reserves an installation area and holes for connection and fixing for the height control valve when the sleeve, limit sleeve and movable sleeve are produced by injection molding. Therefore, the height control valve can be assembled between the three at the same time during the assembly of the sleeve, limit sleeve and movable sleeve, without the need to arrange processing and assembly procedures separately, thereby simplifying the operation steps to achieve the effect of saving time and labor and improving the installation efficiency. Moreover, since the sleeve, limit sleeve and movable sleeve are all injection molded, the installation area and holes reserved on the sleeve, limit sleeve and movable sleeve for installing the height control valve will also have smaller processing errors due to the one-time injection molding, so the deviation of the installation position of the height control valve is effectively avoided, thereby ensuring the working accuracy of the height control valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a top-down exploded structural diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the exploded structure of the utility model from the upper side;

[0023] Figure 3 This is a diagram of the internal structure of the casing of the utility model;

[0024] Figure 4 This is an exploded structural diagram of the height control valve of the utility model;

[0025] Figure 5 This is an exploded structural diagram of the height control valve of the utility model from another perspective. DETAILED DESCRIPTION

[0026] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0028] like Figures 1 to 5 As shown, an integrated air spring shock absorber comprises a casing 1, a limiting sleeve 2 embedded in the top opening of the casing 1, and a movable sleeve 3 movably inserted in the limiting sleeve 2 and the casing 1 and capable of elastic reset, wherein a guide groove 31 is formed on the outer wall of the movable sleeve 3;

[0029] It also includes a height control valve 4 disposed between the sleeve shell 1, the limit sleeve 2 and the movable sleeve 3, the height control valve 4 includes a seat block 41, a pressure plate 43 detachably fixed to the outside of the seat block 41, a hollow sealing gasket 42 disposed between the seat block 41 and the pressure plate 43 to seal the seat block 41 and the pressure plate 43, a swing arm 44 rotatably connected to the outside of the seat block 41, and a guide column 47 laterally and rotatably connected to the inner side of the upper end of the swing arm 44 and located above the seat block 41, the end of the guide column 47 is formed with a guide block 471 outwardly, and the guide block 471 is movably embedded in the guide groove 31;

[0030] A concave cavity 411 is formed on the outer side of the seat block 41, and a hollow sealing gasket 42 is embedded in the concave cavity 411. A first convex block 412 and a second convex block 413 are formed on the bottom surface of the concave cavity 411, and a third convex block 414 and a fourth convex block 415 are respectively located below the first convex block 412 and the second convex block 413.

[0031] The hollow sealing gasket 42 is provided with a first sealing cavity 421, a second sealing cavity 422, a third sealing cavity 423 and a fourth sealing cavity 424 which respectively cooperate with the first protrusion 412, the second protrusion 413, the third protrusion 414 and the fourth protrusion 415, and the first protrusion 412, the second protrusion 413, the third protrusion 414 and the fourth protrusion 415 are respectively embedded in the first sealing cavity 421, the second sealing cavity 422, the third sealing cavity 423 and the fourth sealing cavity 424;

[0032] The first protrusion 412, the second protrusion 413, the third protrusion 414 and the fourth protrusion 415 are respectively provided with a first guide groove 416, a second guide groove 417, a third guide groove 418 and a fourth guide groove 419;

[0033] The pressure plate 43 is provided with a first air vent 435, a second air vent 434, a third air vent 431, a fourth air vent 432 and a fifth air vent 433. The first air vent 435 and the second air vent 434 are interconnected with the interior of the first guide groove 416, the third air vent 431 is interconnected with the interior of the second guide groove 417, the fourth air vent 432 is interconnected with the interior of the fourth guide groove 419, and the fifth air vent 433 is interconnected with the interior of the third guide groove 418.

[0034] Two vertically arranged and left-right distributed bosses 4110 are formed downwardly from the bottom of the seat block 41, a first countersunk hole 4111 is opened at the center of the end of the two bosses 4110, a second countersunk hole 4112 is opened at the center of the bottom surface of the first countersunk hole 4111, a third countersunk hole 4113 is opened at the center of the bottom surface of the second countersunk hole 4112, a sixth air vent 4114 is opened between the bottom surface of the first guide groove 416 and the inner wall of a third countersunk hole 4113 on the left, a seventh air vent 4115 is opened between the bottom surface of the third guide groove 418 and the inner wall of a third countersunk hole 4113 on the left, an eighth air vent 4116 is opened between the bottom surface of the second guide groove 417 and the inner wall of a third countersunk hole 4113 on the right, and a ninth air vent 4117 is opened between the bottom surface of the fourth guide groove 419 and the inner wall of a third countersunk hole 4113 on the right.

[0035] A stopper 46 is fixed to the inner side of the lower end of the swing arm 44 , a sealing sheet 45 is fixed between the stopper 46 and the swing arm 44 , a recess 461 is provided on the inner outer wall of the stopper 46 , and a tenth vent hole 462 is provided between the bottom surface of the recess 461 and the outer outer wall of the stopper 46 .

[0036] A positioning sleeve 21 is formed downward at the bottom of the limiting sleeve 2, a positioning notch 22 is formed on one side of the positioning sleeve 21, and a seat block 41 is arranged in the positioning notch 22. Two positioning countersunk holes 23 symmetrically distributed on the left and right are also formed at the bottom of the limiting sleeve 2. Correspondingly, two vertically arranged positioning pins 4118 are formed upward at the top of the seat block 41, and the two positioning pins 4118 are respectively inserted into the two positioning countersunk holes 23.

[0037] Two vertically arranged support columns 11 are formed on the inner wall of the housing 1 and are symmetrically arranged below the seat block 41 . The ends of the two protruding columns 4110 are respectively pressed against the ends of the two support columns 11 .

[0038] A first step column 12 is concentrically arranged upwardly at the center of the end of each of the two support columns 11 , and the two first step columns 12 are respectively inserted into the two first countersunk holes 4111 .

[0039] A second step column 13 is concentrically arranged upwardly at the center of the end of each of the two first step columns 12 , and the two second step columns 13 are respectively inserted into the two second countersunk holes 4112 .

[0040] An air passage 14 is provided between the end surfaces of the two second step columns 13 and the bottom outer wall of the casing 1 , and the upper end openings of the two air passages 14 are respectively communicated with the openings of the two third countersunk holes 4113 .

[0041] A connector 5 is inserted into the lower openings of the two air passages 14 .

[0042] A locking groove 4119 is provided on both sides of the seat block 41, and a U-shaped buckle 48 is embedded in each of the two locking grooves 4119. The two ends of each U-shaped buckle 48 are respectively clamped on the inner outer wall of the seat block 41 and the outer outer wall of the pressure plate 43 to fix the seat block 41 and the pressure plate 43 to each other.

[0043] Working principle:

[0044] The housing 1 is mounted on the chassis of the automobile. When the movable sleeve 3 moves elastically up and down, the guide groove 31 will also move simultaneously and use its own trajectory to drive the guide block 471 on the guide column 47 in the height control valve 4 to swing left or right, and then drive the upper end of the swing arm 44 to swing left or right with the help of the rotatable connection relationship between the guide column 47 and the upper end of the swing arm 44.

[0045] The pressurized gas is passed into the corresponding air passage 14 through one of the joints 5. If the pressurized gas enters the air passage 14 on the left, the pressurized gas will enter the first guide groove 416 and the third guide groove 418 through the sixth air hole 4114 and the seventh air hole 4115 respectively. When the block 46 swings to the left with the lower end of the swing arm 44, the opening of the sink groove 461 on the block 46 is connected with the first air hole 435, the second air hole 434 and the fourth air hole 432. The pressurized gas in the first guide groove 416 will enter the fourth air hole 432 through the sink groove 461, and then enter the air passage 14 on the right through the fourth guide groove 419 and the ninth air hole 4117, and finally be output from the right joint 5. When the block 46 swings to the left with the lower end of the swing arm 44, the opening of the sink groove 461 on the block 46 is connected with the first air hole 435, the second air hole 434 and the fourth air hole 432. When swinging to the right, the opening of the groove 461 on the stopper 46 is connected to the fifth vent hole 433, the second vent hole 434 and the third vent hole 431, and the pressurized gas located in the first guide groove 416 and the third guide groove 418 will enter the second guide groove 417 and the fourth guide groove 419 respectively through the groove 461, and then enter the right air channel 14 through the eighth air hole 4116 and the ninth air hole 4117 respectively, and finally output from the right joint 5; when the stopper 46 swings to the middle position, the groove 461 on the stopper 46 is not connected to the first guide groove 416, the second guide groove 417, the third guide groove 418 and the fourth guide groove 419, and the pressurized gas in the left air channel 14 cannot be discharged, and it is in a stable pressure-maintaining state at this time.

[0046] The utility model integrates the height control valve 4 inside the air spring, and reserves an installation area and holes for connection and fixing for the height control valve 4 when the sleeve shell 1, the limit sleeve 2 and the movable sleeve 3 are produced by injection molding, so that the height control valve 4 can be assembled between the three at the same time during the assembly of the sleeve shell 1, the limit sleeve 2 and the movable sleeve 3, without the need to arrange processing and assembly procedures separately, thereby simplifying the processing steps to achieve the effect of saving time and labor and improving the installation efficiency. Moreover, since the sleeve shell 1, the limit sleeve 2 and the movable sleeve 3 are all injection molded, the installation area and holes reserved on the sleeve shell 1, the limit sleeve 2 and the movable sleeve 3 for installing the height control valve 4 will also have a smaller processing error due to the one-time injection molding, so the deviation of the installation position of the height control valve 4 is effectively avoided, thereby ensuring the working accuracy of the height control valve 4.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An integrated air spring shock absorber, comprising a casing, a limiting sleeve embedded in the top opening of the casing, and a movable sleeve movably inserted in the limiting sleeve and the casing and elastically resettable, wherein a guide groove is formed on the outer wall of the movable sleeve, characterized in that: It also includes a height control valve disposed between the sleeve shell, the limit sleeve and the movable sleeve, the height control valve including a seat block, a detachable pressure plate fixed to the outside of the seat block, a hollow sealing gasket disposed between the seat block and the pressure plate to seal the seat block and the pressure plate to each other, a swing arm rotatably connected to the outside of the seat block, and a guide column laterally and rotatably connected to the inner side of the upper end of the swing arm and located above the seat block, the end of the guide column is formed with a guide block outwardly, and the guide block is movably embedded in the guide groove; A concave cavity is formed on the outer side of the seat block, the hollow sealing gasket is embedded in the concave cavity, and a first convex block and a second convex block are formed on the bottom surface of the concave cavity, which are respectively arranged on the left and right sides, and a third convex block and a fourth convex block are respectively located below the first convex block and the second convex block; The hollow sealing gasket is provided with a first sealing cavity, a second sealing cavity, a third sealing cavity and a fourth sealing cavity respectively cooperating with the first bump, the second bump, the third bump and the fourth bump, and the first bump, the second bump, the third bump and the fourth bump are respectively embedded in the first sealing cavity, the second sealing cavity, the third sealing cavity and the fourth sealing cavity; The first protrusion, the second protrusion, the third protrusion and the fourth protrusion are respectively provided with a first guide groove, a second guide groove, a third guide groove and a fourth guide groove on their end surfaces; The pressure plate is provided with a first air vent, a second air vent, a third air vent, a fourth air vent and a fifth air vent. The first air vent and the second air vent are interconnected with the interior of the first guide groove, the third air vent is interconnected with the interior of the second guide groove, the fourth air vent is interconnected with the interior of the fourth guide groove, and the fifth air vent is interconnected with the interior of the third guide groove.

2. The integrated air spring shock absorber according to claim 1, characterized in that: The bottom of the seat block is formed with two vertically arranged and left-right distributed protrusions downward, the centers of the ends of the two protrusions are provided with a first countersunk hole, the center of the bottom surface of the first countersunk hole is provided with a second countersunk hole, and the center of the bottom surface of the second countersunk hole is provided with a third countersunk hole.

3. The integrated air spring shock absorber according to claim 2, characterized in that: A sixth vent hole is provided between the bottom surface of the first guide groove and the inner wall of a third countersunk hole on the left, a seventh vent hole is provided between the bottom surface of the third guide groove and the inner wall of a third countersunk hole on the left, an eighth vent hole is provided between the bottom surface of the second guide groove and the inner wall of a third countersunk hole on the right, and a ninth vent hole is provided between the bottom surface of the fourth guide groove and the inner wall of a third countersunk hole on the right.

4. The integrated air spring shock absorber according to claim 1, characterized in that: A stopper is fixed to the inner side of the lower end of the swing arm, a sealing sheet is fixed between the stopper and the swing arm, a sink groove is provided on the inner outer wall of the stopper, and a tenth vent hole is provided between the bottom surface of the sink groove and the outer outer wall of the stopper.

5. The integrated air spring shock absorber according to claim 1, characterized in that: A positioning sleeve is formed downward at the bottom of the limiting sleeve, a positioning notch is formed on one side of the positioning sleeve, the seat block is arranged in the positioning notch, and two positioning countersunk holes symmetrically distributed on the left and right are also formed at the bottom of the limiting sleeve. Correspondingly, two vertically arranged positioning pins are formed upward at the top of the seat block, and the two positioning pins are respectively inserted in the two positioning countersunk holes.

6. The integrated air spring shock absorber according to claim 2, characterized in that: Two vertically arranged support columns are formed on the inner wall of the sleeve upward and are symmetrically arranged below the seat block. The ends of the two protruding columns are respectively pressed against the ends of the two support columns.

7. The integrated air spring shock absorber according to claim 6, characterized in that: The centers of the ends of the two support columns each have a first step column arranged concentrically upwardly formed thereon, and the two first step columns are respectively inserted into the two first countersunk holes; the centers of the ends of the two first step columns each have a second step column arranged concentrically upwardly formed thereon, and the two second step columns are respectively inserted into the two second countersunk holes.

8. The integrated air spring shock absorber according to claim 7, characterized in that: An air passage is provided between the end faces of the two second step columns and the bottom outer wall of the casing, and the upper end openings of the two air passages are respectively communicated with the openings of the two third countersunk holes.

9. The integrated air spring shock absorber according to claim 8, characterized in that: A connector is inserted into the lower openings of the two ventilation channels.

10. The integrated air spring shock absorber according to claim 1, characterized in that: A locking groove is provided on both sides of the seat block, and a U-shaped buckle is embedded in each of the two locking grooves. The two ends of each U-shaped buckle are respectively clamped on the inner outer wall of the seat block and the outer outer wall of the pressure plate to fix the seat block and the pressure plate to each other.

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