CN109751357B - Guider and inverted single-cylinder shock absorber - Google Patents
Guider and inverted single-cylinder shock absorber Download PDFInfo
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- CN109751357B CN109751357B CN201910111582.3A CN201910111582A CN109751357B CN 109751357 B CN109751357 B CN 109751357B CN 201910111582 A CN201910111582 A CN 201910111582A CN 109751357 B CN109751357 B CN 109751357B
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Abstract
The invention relates to the technical field of vibration reduction, and discloses a guider and an inverted single-cylinder vibration absorber, wherein the guider comprises an outer sleeve and a bushing arranged in the outer sleeve; the bushing comprises an inner bushing and an elastic sleeve, and the elastic sleeve is clamped between the inner bushing and the outer sleeve; the inner bushing can move along the radial direction of the inner bushing and can extrude the elastic sleeve to enable the elastic sleeve to generate elastic deformation, and the inner bushing is used for absorbing and eliminating transverse acting force applied to the guider. When a transverse acting force is generated between the inner bushing and the piston rod, the piston rod can extrude the inner bushing, and the elastic sleeve is extruded by the inner bushing to elastically deform the elastic sleeve so as to absorb the transverse acting force between the inner bushing and the piston rod, so that the transverse acting force between the piston rod and the guider is eliminated, and the service life of the inverted single-tube shock absorber is prolonged.
Description
Technical Field
The invention relates to the technical field of vibration reduction, in particular to a guider and an inverted single-cylinder vibration reducer.
Background
Monotube shock absorbers are less capable of withstanding lateral loads and, therefore, inverted monotube shock absorbers are often employed in applications where lateral loads are present. Namely, the outer cylinder is sleeved at the lower end of the single-cylinder shock absorber, and a piston rod of a working cylinder of the inverted single-cylinder shock absorber extends out of a cylinder body of the working cylinder after penetrating through the guider and is fixed at the bottom of the outer cylinder through a nut.
When the monotube shock absorber moves with a large stroke, a large transverse force may exist between the piston rod and the guide. When the inverted single-tube shock absorber is subjected to transverse load, the transverse load is also transmitted to the piston rod due to the gap between the working cylinder and the outer tube, so that transverse acting force exists between the piston rod and the guider. The following problems arise when there are transverse forces between the piston rod and the guide: 1. the piston rod is subjected to a large bending load; 2. one or more repeated frictions in fixed directions are generated between the contact surfaces of the guider piston rod and the guider, so that the surface of the piston rod is easily damaged; 3. an oil seal is arranged between the piston rod and the guider, and one or more repeated frictions in fixed directions are generated between the piston rod and the oil seal, so that the failure of the oil seal is easily caused.
The above problems all lead to the failure of the inverted monotube shock absorber, and therefore, how to provide a guider which can eliminate or reduce the lateral force between the piston rod and the guider is an important technical problem.
Disclosure of Invention
The invention aims to provide a guider and an inverted single-cylinder shock absorber, which can solve the problem that a large transverse acting force exists between a piston rod and the guider of the existing inverted single-cylinder shock absorber.
In order to achieve the purpose, the invention adopts the following technical scheme:
a guider comprises an outer sleeve and a bushing arranged in the outer sleeve; the bushing comprises an inner bushing and an elastic sleeve, and the elastic sleeve is clamped between the inner bushing and the outer sleeve;
the elastic sleeve can be elastically deformed when being pressed and is used for absorbing and eliminating the transverse acting force borne by the guider.
As a preferable technical solution of the guider, the elastic sleeve is made of rubber.
As a preferable technical solution of the guider, the bushing further includes an outer bushing, and the outer bushing is interposed between the elastic sleeve and the outer sleeve.
As a preferred technical scheme of the guider, a first mounting hole is formed in the outer sleeve, a sliding plate is arranged on the lower portion of the first mounting hole, and two ends of the sliding plate are abutted to the end face of one end of the inner bushing and the inner wall of the first mounting hole respectively.
As a preferable technical solution of the guide, a lower end of the pressure plate abuts against the outer bushing, and the outer sleeve axially limits an upper end of the pressure plate.
As a preferred technical scheme of the guider, a first limiting plate for axially limiting the upper end of the pressure plate is formed on the outer sleeve;
or, the outer sleeve is provided with a first bulge, and the pressing plate is provided with a first pressing point groove into which the first bulge can be inserted.
As a preferable mode of the guide, the inner bush is located below the pressure plate, and an upper end surface of the inner bush is not in contact with the pressure plate.
As a preferred technical scheme of the guider, a second mounting hole is formed in the inner bushing, a first guide sleeve is mounted on the lower portion of the second mounting hole, one end of the first guide sleeve abuts against the inner wall of the second mounting hole, and the sliding plate axially limits the other end of the first guide sleeve.
Furthermore, an oil seal is arranged at the upper part of the second mounting hole, one end of the oil seal abuts against the inner wall of the second mounting hole, and the other end of the oil seal is axially limited by the pressing plate.
The invention also provides an inverted single-tube shock absorber, which comprises the guider and further comprises:
the working cylinder comprises a cylinder body, a piston arranged in the cylinder body, a piston rod with one end connected to the piston and the other end penetrating through the inner bushing and penetrating out of the cylinder body, and the guider is arranged in the cylinder body;
the piston rod penetrates out of one end of the cylinder body and is connected to the outer barrel.
As a preferred technical scheme of the inverted single-cylinder shock absorber, a second guide sleeve is arranged between the outer cylinder and the outer wall of the cylinder body.
The invention has the beneficial effects that: when the guide is applied to the inverted single tube shock absorber, the piston rod penetrates through the inner bushing and can move along the axial direction of the inner bushing. When the movement stroke of the piston rod is large and the movement speed of the piston rod is high, the piston rod is unstable in movement and is easy to incline, and a transverse acting force can be generated between the piston rod and the inner bushing; when transverse acting force acts on the working cylinder, the working cylinder drives the guider to move radially, and the guider generates transverse acting force between the inner bushing and the piston rod. When transverse acting force is generated between the inner bushing and the piston rod, the piston rod can extrude the inner bushing, and the elastic sleeve is extruded by the inner bushing under stress to enable the elastic sleeve to generate elastic deformation so as to absorb the transverse acting force between the inner bushing and the piston rod, so that the transverse acting force between the piston rod and the guider is eliminated.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an inverted mono-tube shock absorber provided in an embodiment of the present invention;
FIG. 2 is a schematic view of the construction of the guide shown in FIG. 1;
FIG. 3 is a schematic view of the jacket of FIG. 1 without spin crimping;
FIG. 4 is a schematic view of the bushing shown in FIG. 1;
FIG. 5 is a schematic structural view of a guide provided in accordance with another embodiment of the present invention;
FIG. 6 is a schematic view of the cylinder shown in FIG. 1 without spin crimping;
fig. 7 is a view showing a structure of a connection between a cylinder and a guide according to another embodiment of the present invention.
In the figure:
1. a guide; 11. a jacket; 111. a first hole; 112. a second hole; 113. a third aperture; 1131. a first seal groove; 114. a first limit plate; 115. a second seal groove; 116. a second nip groove; 12. a bushing; 121. an inner liner; 1211. a first perforation; 1212. a second perforation; 1213. a third perforation; 122. an elastic sleeve; 1221. a first groove; 123. an outer liner; 13. a slide plate; 14. pressing a plate; 141. a second groove; 15. a first guide sleeve; 16. oil sealing; 17. a first seal ring;
2. a working cylinder; 21. a cylinder body; 211. a stepped hole; 212. a second limiting plate; 213. a second protrusion; 22. a piston; 23. a piston rod; 24. a floating piston;
3. an outer cylinder; 31. a first through hole; 4. a second guide sleeve; 5. a second seal ring; 6. a gasket; 7. and a nut.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
As shown in FIG. 1, the present invention provides a guide for eliminating a lateral force between a piston rod 23 of an inverted mono-tube shock absorber and the guide 1. The inverted single-tube shock absorber comprises an outer tube 3 and a working cylinder 2, wherein one end of the working cylinder 2 is inserted into the outer tube 3 and can move axially relative to the outer tube 3, the working cylinder 2 comprises a cylinder body 21 and a piston rod 23, a piston 22 is arranged in the cylinder body 21, one end of the piston rod 23 is connected to the piston 22, and the other end of the piston rod 23 penetrates through the cylinder body 21 after penetrating through a guider 1 and is connected to the outer tube 3.
It is difficult to ensure the relative coaxiality of the piston rod 23, the operating cylinder 2 and the outer cylinder 3 during processing and assembly, and if the coaxiality among the piston rod 23, the operating cylinder 2 and the outer cylinder 3 is not ensured, a large transverse acting force may exist between the piston rod 23 and the guider 1. The transverse acting force can be generated under the following two conditions, the first condition is that when the inverted single-tube shock absorber moves with a larger stroke, the piston rod 23 can shake to act on the guider 1, so that the transverse action can be generated between the piston rod 23 and the guider 1; in the second case, when the inverted single tube shock absorber is subjected to a lateral load, the lateral load is also transmitted to the piston rod 23 due to a gap between the working cylinder 2 and the outer tube 3, resulting in a lateral force between the piston rod 23 and the guide 1. For this purpose, the present invention provides a guide 1 in which a bush 12 is provided separately, and specifically, as shown in fig. 2, the present invention provides a guide 1 including an outer housing 11, a bush 12 provided in the outer housing 11; the liner 12 includes an inner liner 121 and an elastic sleeve 122 fitted over the inner liner 121, and the elastic sleeve 122 is interposed between the inner liner 121 and the outer jacket 11. When a transverse force is generated between the inner bushing 121 and the piston rod 23, the piston rod 23 will press the inner bushing 121, the inner bushing 121 can move back and forth in the radial direction to press the elastic bushing 122 to elastically deform the elastic bushing 122, and then the transverse force between the piston rod 23 and the guide 1 is absorbed and eliminated by the elastic bushing 122. The elastic sleeve 122 is made of rubber, but is not limited to rubber, and may be made of other elastic materials. The present embodiment utilizes the feature that the rubber material has a low elastic modulus and a large deformation capability, and the elastic sleeve 122 made of rubber is elastically deformed to absorb and eliminate the lateral force between the piston rod 23 and the guide 1.
When the guide 1 is applied to a reverse insertion type monotube shock absorber, the piston rod 23 penetrates the inner liner 121 and is movable in the axial direction thereof. When the movement stroke of the piston rod 23 is large and the movement speed of the piston rod 23 is high, the piston rod 23 is unstable and is prone to tilt, the piston rod 23 will press the inner bushing 121, the inner bushing 121 will move in the radial direction and press the elastic bushing 122 on one side, and the elastic bushing 122 elastically deforms to absorb the transverse force of the piston rod 23 acting on the inner bushing 121, so that the transverse force between the piston rod 23 and the guider 1 is eliminated. When a transverse acting force acts on the working cylinder 2, the working cylinder 2 drives the guider 1 to move radially, the guider 1 acts on the piston rod 23, the piston rod 23 reacts on the inner bushing 121, the inner bushing 121 extrudes the elastic bushing 122, and the elastic bushing 122 elastically deforms to absorb the transverse acting force of the piston rod 23 acting on the inner bushing 121, so that the transverse acting force between the piston rod 23 and the guider 1 is eliminated.
When the elastic sleeve 122 is elastically deformed, the two axial ends of the elastic sleeve 122 will protrude outward, in order to reserve a space for the protruding portions of the elastic sleeve 122 due to the elastic deformation, the two axial ends of the elastic sleeve 122 are respectively provided with first grooves 1221, referring to fig. 2, the first grooves 1221 are all annular arc-shaped grooves, but are not limited to arc-shaped grooves.
In this embodiment, the liner 12 further includes an outer liner 123 sleeved outside the elastic sleeve 122, the outer liner 123 is sandwiched between the elastic sleeve 122 and the outer sleeve 11, and the elastic sleeve 122, the inner liner 121, and the outer liner 123 are connected together by an adhesive to form the liner 12.
As shown in fig. 3, the outer casing 11 is provided with a first mounting hole, and the first mounting hole includes a first hole 111, a second hole 112, and a third hole 113, which are sequentially arranged from bottom to top along the axial direction and have gradually increasing hole diameters. Referring to fig. 1 and 2, a first seal ring 17 is provided between the outer jacket 11 and the outer liner 123 in order to prevent hydraulic oil in the cylinder 21 from leaking through a joint surface between the outer jacket 11 and the outer liner 123. Specifically, a first seal groove 1131 is provided in the third bore 113, and the first seal ring 17 is installed in the first seal groove 1131.
The slide plate 13 is mounted in the second hole 112, and both ends of the slide plate 13 respectively abut against a stepped surface formed by the first hole 111 and the second hole 112 and a lower end surface of the inner bush 121. The sliding plate 13 is made of Polytetrafluoroethylene (PTFE), but is not limited to PTFE, and may be made of other materials, and it is only necessary to ensure that the roughness of the end surface of the sliding plate 13 contacting the inner bush 121 is small, so as to reduce the friction between the lower end surface of the inner bush 121 and the guard plate when the inner bush 121 moves radially.
The upper end of the first mounting hole is provided with a pressing plate 14, the outer wall of the pressing plate 14 is of a stepped structure and comprises a first stepped column and a second stepped column which are sequentially and coaxially arranged from bottom to top, the outer diameter of the first stepped column is larger than that of the second stepped column, the third hole 113 is arranged in the first stepped column, a first limiting plate 114 is formed by performing crimping and press fitting on the upper edge of the outer sleeve 11, the upper end face of the first stepped column is abutted against the lower end face of the first limiting plate 114, and the pressing plate 14 is guaranteed not to be separated from the first mounting hole. The lower end of the first step column abuts on the upper end surface of the outer liner 123, and the pressure plate 14 is supported by the outer liner 123.
It can be understood that the connection mode of the pressing plate 14 and the outer sleeve 11 in the present invention is not limited to the above mode, and the present invention may further include a plurality of first pressure point grooves distributed circumferentially on the outer peripheral wall of the upper portion of the pressing plate 14, first pressure point marks are made on the outer peripheral wall of the outer sleeve 11 at positions corresponding to the first pressure point grooves, the pressing plate 14 is placed on the upper portion of the second hole, the lower end of the pressing plate is abutted to the upper end surface of the outer bushing 123, then the outer sleeve 11 is pressed from each first pressure point mark to deform the outer sleeve 11 to form a first protrusion, and the first protrusion is pressed into the first pressure point groove, so that the pressing plate 14 is limited, and the pressing plate 14 is prevented from being removed from the upper portion of the first mounting hole. The first pressure point grooves and the first protrusions are arranged in a one-to-one correspondence mode, the number of the first pressure point grooves can be four, eight or other numbers, and the plurality of first pressure point grooves are evenly distributed along the circumferential direction of the outer circumferential wall of the pressing plate 14. In the present invention, a first external thread may be provided on the outer peripheral wall of the second step pillar of the pressing plate 14, and a first internal thread engaged with the first external thread may be provided on the inner peripheral wall of the upper portion of the third hole 113, so that the upper end of the pressing plate 14 is screwed to the jacket 11, and the lower end of the pressing plate 14 is brought into contact with the upper end surface of the outer bushing 123.
In order to avoid friction between the pressure plate 14 and the inner sleeve 121, it is necessary that the upper end surface of the inner sleeve 121 and the pressure plate 14 do not contact each other. For example, referring to fig. 2 and 4, the inner sleeve 121 is located below the pressure plate 14, the lower end surface of the outer sleeve 123 and the lower cross-section of the inner sleeve 121 are located at the same height, and the upper end surface of the outer sleeve 123 is higher than the upper end surface of the inner sleeve 121, so that the length of the outer sleeve 123 in the height direction is greater than the length of the inner sleeve 121 in the height direction, thereby preventing the upper end surface of the inner sleeve 121 and the pressure plate 14 from contacting each other, reducing the friction force when the inner sleeve 121 moves in the radial direction, and ensuring that the inner sleeve 121 can move smoothly in the radial direction to press the elastic sleeve 122. However, in order to prevent the upper end surface of the inner sleeve 121 from contacting the pressure plate 14, the present invention is not limited to the above-mentioned structure, and as shown in fig. 5, a circular second groove 141 may be formed on the lower end surface of the pressure plate 14, and the inner diameter of the second groove 141 is equal to the inner diameter of the outer sleeve 123, so that the inner sleeve 121 does not contact the pressure plate 14 when moving radially to press the elastic sleeve 122.
Referring to fig. 4, the inner liner 121 is provided with a second mounting hole, the second mounting hole includes a first perforation 1211, a second perforation 1212, and a third perforation 1213 coaxially disposed from bottom to top, and an aperture of the second perforation 1212 is smaller than an aperture of the first perforation 1211 and an aperture of the third perforation 1213. Referring to fig. 2 and 4, the first through hole 1211 is internally pressed with the first guide sleeve 15, the piston rod 23 is disposed through the first guide sleeve 15, and the first guide sleeve 15 guides the axial movement of the piston rod 23. The inner wall of the first guide sleeve 15 is coated with a molybdenum layer to reduce friction between the piston rod 23 and the first guide sleeve 15. One end of the first guide sleeve 15 abuts against a stepped surface formed by the first through hole 1211 and the second through hole 1212, and the other end of the first guide sleeve 15 is limited by the sliding plate 13 to prevent the first guide sleeve 15 from coming off from the lower end of the second mounting hole. An oil seal 16 is installed in the third through hole 1213 to prevent hydraulic oil in the cylinder 21 from flowing out through the joint surface between the inner liner 121 and the piston rod 23. One end of the oil seal 16 abuts against a stepped surface formed by the second through hole 1212 and the third through hole 1213, and the other end of the oil seal 16 is restrained by the pressure plate 14 to prevent the oil seal 16 from coming out of the upper end of the second mounting hole.
The assembly process of the above-described guide 1 is as follows:
step 1, coating adhesives on the inner peripheral wall of the outer bushing 123 and the outer peripheral wall of the inner bushing 121, inserting the elastic bushing 122 between the outer bushing 123 and the inner bushing 121, enabling the elastic bushing 122 made of rubber to be vulcanized after contacting the adhesives, and realizing firm bonding of the inner bushing 121 and the outer bushing 123 with the elastic bushing 122 to form the bushing 12 in the vulcanization process of the elastic bushing 122.
Step 2, the slide plate 13 is installed in the second hole 112 of the outer liner 123, and the first seal ring 17 is installed in the first seal groove 1131.
And 3, press-fitting the first guide sleeve 15 into the first through hole 1211 of the inner bushing 121, and press-fitting the oil seal 16 into the third through hole 1213 of the inner bushing 121.
And 4, press-fitting the bush 12 into the second hole 112 of the outer sleeve 11, press-fitting the press plate 14 into the second hole 112 of the outer sleeve 11, and then crimping and press-fitting the lower edge of the outer sleeve 11 to form a first limit plate 114, thereby completing the assembly of the guider 1.
The order of assembling the guide 1 in the present invention is not limited to the above order, and some steps may be exchanged, for example, the order of step 2 and step 3 may be exchanged.
The invention also provides an inverted single-tube shock absorber which comprises the guider 1 and the working cylinder 2, wherein as shown in figure 6, the working cylinder 2 comprises a cylinder body 21, a stepped hole 211 is arranged in the cylinder body 21 and comprises a large-diameter hole and a small-diameter hole which are sequentially arranged from bottom to top, the diameter of the large-diameter hole is larger than that of the small-diameter hole, the guider 1 is arranged in the large-diameter hole, the upper end of the guider 1 abuts against a stepped surface formed by the large-diameter hole and the spinning small-diameter hole, and a second limiting plate 212 is formed by curling to support the guider 1 and limit the guider 1 in the cylinder body 21.
It should be understood that the connection mode of the cylinder 21 and the outer sleeve 11 is not limited to the above-mentioned mode, as shown in fig. 7, the invention may further include a plurality of second pressure point grooves 116 distributed circumferentially on the outer peripheral wall of the upper portion of the outer sleeve 11, second pressure point marks are formed on the outer peripheral wall of the cylinder 21 at positions corresponding to the second pressure point grooves 116, after the guide 1 is installed in the large-diameter hole, the upper end of the guide 1 is abutted to the stepped surface formed by the large-diameter hole and the small-diameter hole, then the cylinder 21 is pressed from each second pressure point mark to deform the outer sleeve 11 to form the second protrusion 213, and the second protrusion 213 is pressed into the second pressure point groove 116, thereby limiting the guide 1 and preventing the guide 1 from falling out of the lower portion of the cylinder 21. The second pressure point grooves 116 and the second protrusions 213 are arranged in a one-to-one correspondence, the number of the second pressure point grooves 116 may be four, eight or other numbers, and the plurality of second pressure point grooves 116 are uniformly distributed along the circumferential direction of the outer circumferential wall of the outer sleeve 11. In the present invention, a second internal thread may be provided on the inner peripheral wall of the small-diameter hole, and a second external thread engaged with the second internal thread may be provided on the outer peripheral wall of the outer sleeve 11, so that the outer sleeve 11 is screwed to the cylinder body 21, and the upper end of the cylinder body 21 abuts against the stepped surface formed by the large-diameter hole and the small-diameter hole.
In order to prevent the hydraulic oil in the cylinder 21 from leaking from the joint surface between the guide 1 and the inner wall of the cylinder 21, a second seal ring 5 is provided between the guide 1 and the inside of the cylinder 21. Specifically, a second seal groove 115 is provided in the outer peripheral wall of the outer sleeve 11, and the second seal ring 5 is fitted into the second seal groove 115.
The inverted single-tube shock absorber further comprises an outer tube 3, and one end of the working cylinder 2 is inserted into the outer tube 3 and can move axially relative to the outer tube 3. The working cylinder 2 further comprises a piston rod 23, and a piston 22 and a floating piston 24 which are arranged in the cylinder body 21, wherein the floating piston 24 and the piston rod 23 are respectively positioned at two sides of the piston 22. One end of the piston rod 23 is connected to the piston 22, and the other end passes through the guide 1 and then out of the cylinder 21 and is connected to the outer cylinder 3. Specifically, the lower end of the outer cylinder 3 is provided with a first through hole 31, the piston rod 23 penetrates through the cylinder 21 and then sequentially penetrates through the gasket 6 and the first through hole 31 and is connected to the nut 7 through a thread, and the connection between the outer cylinder 3 and the piston rod 23 is realized through the nut 7.
A second guide sleeve 4 is arranged between the outer cylinder 3 and the outer wall of the cylinder body 21, and the second guide sleeve 4 plays a role in guiding the axial movement of the working cylinder 2 relative to the outer cylinder 3. In the present embodiment, two, but not limited to, second guide sleeves 4 are provided, and the two second guide sleeves 4 are provided at both ends of the connecting portion between the outer cylinder 3 and the cylinder 21, respectively. The inner wall of the second guide sleeve 4 is coated with a molybdenum layer to reduce the friction between the cylinder 21 and the outer cylinder 3.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Claims (6)
1. A guide, comprising an outer housing (11), and a sleeve (12) disposed within the outer housing (11); the bushing (12) comprises an inner bushing (121) and an elastic bushing (122), and the elastic bushing (122) is clamped between the inner bushing (121) and the outer sleeve (11);
the inner bushing (121) can move along the radial direction of the inner bushing and presses the elastic sleeve (122) to enable the elastic sleeve (122) to generate elastic deformation for absorbing and eliminating the transverse acting force applied to the guider;
the bushing (12) further comprises an outer bushing (123), and the outer bushing (123) is clamped between the elastic sleeve (122) and the outer sleeve (11);
a first mounting hole is formed in the outer sleeve (11), a sliding plate (13) is arranged at the lower part of the first mounting hole, and two ends of the sliding plate (13) are respectively abutted against the end face of one end of the inner bushing (121) and the inner wall of the first mounting hole;
a pressure plate (14) is arranged at the upper part of the first mounting hole, the lower end of the pressure plate (14) is abutted against the outer bushing (123), and the outer sleeve (11) axially limits the upper end of the pressure plate (14);
a first limiting plate (114) which axially limits the upper end of the pressing plate (14) is formed on the outer sleeve (11); or the outer sleeve (11) is provided with a first bulge, and the pressing plate (14) is provided with a first pressing point groove into which the first bulge can be inserted.
2. The guide of claim 1, wherein the elastic sleeve (122) is made of rubber.
3. The guide device according to claim 1, wherein the inner bushing (121) is located below the pressure plate (14), and an upper end surface of the inner bushing (121) is not in contact with the pressure plate (14).
4. The guider according to claim 1, wherein a second mounting hole is formed on the inner bushing (121), a first guide sleeve (15) is mounted at the lower part of the second mounting hole, one end of the first guide sleeve (15) abuts against the inner wall of the second mounting hole, and the sliding plate (13) axially limits the other end of the first guide sleeve (15).
5. The guider according to claim 4, wherein an oil seal (16) is arranged at the upper part of the second mounting hole, one end of the oil seal (16) abuts against the inner wall of the second mounting hole, and the other end of the oil seal (16) is axially limited by the pressure plate (14).
6. An inverted monotube shock absorber comprising the guide of any one of claims 1 to 5 and further comprising:
the working cylinder (2) comprises a cylinder body (21), a piston (22) arranged in the cylinder body (21) and a piston rod (23) of which one end is connected with the piston (22) and the other end penetrates through the inner bushing (121) and penetrates out of the cylinder body (21), and the guider is arranged in the cylinder body (21);
the outer cylinder (3), the one end of working cylinder (2) inserts in the outer cylinder (3) and can for outer cylinder (3) axial displacement, piston rod (23) wear out the one end of cylinder body (21) connect in outer cylinder (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910111582.3A CN109751357B (en) | 2019-02-12 | 2019-02-12 | Guider and inverted single-cylinder shock absorber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910111582.3A CN109751357B (en) | 2019-02-12 | 2019-02-12 | Guider and inverted single-cylinder shock absorber |
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| CN109751357A CN109751357A (en) | 2019-05-14 |
| CN109751357B true CN109751357B (en) | 2021-04-16 |
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| CN201258938Y (en) * | 2008-08-18 | 2009-06-17 | 重庆渝安创新科技(集团)有限公司 | Inverted rear shock absorber |
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| US6179099B1 (en) * | 1997-12-11 | 2001-01-30 | Stabilus Gmbh | Gas spring having an intermediate stop function and temperature compensation |
| CN104373496A (en) * | 2014-10-11 | 2015-02-25 | 宁波凯瑞汽车零部件有限公司 | Bidirectional adjustable shock absorber |
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| CN109751357A (en) | 2019-05-14 |
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Effective date of registration: 20211206 Address after: Room 416, Pioneer Building, No.1 Changjiang Road, Jiaozhou economic and Technological Development Zone, Qingdao, Shandong 266300 Patentee after: Coma intelligent suspension technology (Qingdao) Co.,Ltd. Address before: 215222 Building 2, Suzhou Automotive Research Institute, Tsinghua University, 139 Lianyang Road, Wujiang District, Suzhou City, Jiangsu Province Patentee before: KEMA SMART SUSPENSION TECHNOLOGY (SUZHOU) Co.,Ltd. |