Limiting and damping structure, piston type air compressor applying same and vehicle

Abstract

The limiting and damping structure comprises a damping pad, a limiting piece, an embedded piece and an elastic sleeve, the damping pad is in an arch shape, the top of the damping pad is provided with an open hole, the open hole extends in the first direction, and the lower end of the open hole extends to be communicated with the inner side space of the damping pad. A skirt edge part extending in the second direction is arranged at the bottom of the shock pad; the limiting piece comprises a columnar main body part with a column body extending in the first direction and a first blocking part located at the lower end of the columnar main body part and extending outwards in the circumferential direction, the columnar main body part penetrates through the mounting piece, the upper end of the columnar main body part extends into the hole of the shock pad, and an annular embedding groove is formed by the outer side wall of the upper end of the columnar main body part and the inner side wall of the hole of the shock pad; the embedded part is embedded into the embedded groove of the columnar main body part in a matched mode, and the elastic sleeve wraps the outer side wall of the limiting part; the shock pad solves the problems that in the prior art, a shock pad in a vehicle piston type air compressor device is torn and loses efficacy due to long-term strenuous vibration.

Description

Technical Field

[0001] The utility model belongs to the technical field of shock-absorbing pads for automobile piston air compressors, and in particular relates to a position-limiting shock-absorbing structure and a piston air compressor and a vehicle using the same. Background Art

[0002] With the rapid development of automobiles, vehicle air compressors, as the main part of air source devices, are gaining more and more attention. Air compressors convert the mechanical energy of the prime mover into gas pressure energy and are pressure generators for compressed air. Most existing air compressors are reciprocating piston type, rotary blade or rotary screw. In the process of compressing gas, the inertia force, torque and gas force generated by the reciprocating movement of the piston of the piston type air compressor will cause the air compressor to produce working vibration. Usually, shock-absorbing pads are designed at the fixed connection position of the air compressor to isolate the vibration of the air compressor so that the vibration of the air compressor does not affect the installation foundation (such as: vehicle beams, brackets, bases, etc.).

[0003] However, at present, when a vehicle loaded with an air compressor passes over speed bumps and bad road conditions, the vehicle will be violently bumped and cause the air compressor to vibrate violently. The vibration amplitude exceeds the normal elastic deformation range of the shock absorber pad. Over time, the metal insert and rubber joint above the shock absorber pad will tear, causing the shock absorber pad to fail, thereby causing the air compressor to bump, make abnormal noises, vibrate violently, and fail.

[0004] Therefore, it is necessary to add a limit damping structure and a piston air compressor and a vehicle using the limit damping structure in the automobile compressor damping device to avoid tearing of the damping pad due to severe vibration. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the utility model provides a limit shock absorbing structure and a piston air compressor and a vehicle using the same.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] In a first aspect, a position limiting and shock absorbing structure is provided, comprising:

[0008] The shock-absorbing pad is in an arched shape, the top of which has an opening extending in a first direction and the lower end of which extends to the inner space of the shock-absorbing pad, and the bottom of the shock-absorbing pad has a skirt portion extending in a second direction; the first direction is perpendicular to the second direction;

[0009] The limiting member comprises a columnar main body portion extending along a first direction and a first stop portion extending outwardly along a circumferential direction at a lower end of the columnar main body portion, wherein the columnar main body portion passes through the mounting member and the upper end thereof extends into the opening of the shock-absorbing pad; an annular embedding groove is formed between an outer side wall of the upper end of the columnar main body portion and an inner side wall of the opening of the shock-absorbing pad;

[0010] The insert comprises a cylindrical main body portion extending along a first direction and a plate portion located at an upper end of the cylindrical main body portion and extending outwardly along a circumferential direction; the cylindrical main body portion is cooperatively embedded in the embedding groove of the columnar main body portion;

[0011] An elastic sleeve wrapped around the outer side wall of the limiting member, the elastic sleeve comprising a stopper outer sleeve portion located outside the first stopper portion;

[0012] When the limiting shock-absorbing structure is in a first state, the top surface of the outer sleeve of the first stop portion and the bottom surface of the mounting member have a buffer distance in a first direction, and the buffer distance is greater than zero; the top surface of the columnar main body of the limiting member and the top surface of the plate portion of the embedded member have a first distance.

[0013] In certain embodiments, when the limiting shock-absorbing structure is in the second state, the top surface of the outer sleeve of the first stop portion contacts the bottom surface of the mounting member; the distance between the top surface of the columnar main body portion of the limiting member and the top surface of the plate portion of the embedded member is a second distance, and the second distance is smaller than the first distance.

[0014] In some embodiments, a bottom of the cylindrical body portion of the insert is spaced apart from a bottom of the insert groove in the first direction.

[0015] In certain embodiments, the columnar main body portion of the limiting member includes a vertical section at an upper end and a second stopper at a lower end of the vertical section and extending outwardly in a circumferential direction.

[0016] In some embodiments, the elastic sleeve of the limiting member further includes an outer sleeve portion located at the periphery of the second stop portion and the outer sleeve portion below the second stop portion, and the outer sleeve portion of the outer sleeve portion below the second stop portion contacts the mounting member.

[0017] In certain embodiments, the device further includes a mounting bracket connected to the piston air compressor and the vehicle, wherein the mounting bracket is fixed on the left and right sides of the piston air compressor, and a space is formed between the top of the side panel of the mounting bracket and the mounting member, wherein a limiting shock-absorbing structure including a shock-absorbing pad is fixed in the space.

[0018] In a second aspect, a piston air compressor is provided, comprising the shock absorbing pad limiting structure.

[0019] According to a third aspect, a vehicle is provided, comprising the piston air compressor.

[0020] The beneficial effect of the utility model is as follows: the utility model cooperates with the shock-absorbing pad, the mounting part and the limiting part, and reasonably sets the maximum deformation displacement distance of the shock-absorbing pad. When the elastic deformation of the shock-absorbing pad exceeds the maximum deformation displacement distance, the limiting part installed inside the shock-absorbing pad will contact the mounting part, thereby effectively avoiding the rubber tearing of the shock-absorbing pad caused by long-term elastic deformation, and solves the problems of tearing and failure of the shock-absorbing pad caused by long-term severe vibration in the current automotive piston air compressor device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 is a cross-sectional view of a position limiting shock absorbing structure provided by the utility model in an exemplary embodiment;

[0023] Figure 2 It is a structural schematic diagram of a piston air compressor including a position limiting and shock absorbing structure provided by the utility model in an exemplary embodiment. DETAILED DESCRIPTION

[0024] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0025] The utility model provides an upper and lower elastic buffer shock-absorbing structure including a limiting structure, which is used to solve the problem that the metal insert and the rubber connection inside the shock-absorbing pad are torn, causing the shock-absorbing pad to fail, and the shock-absorbing pad will produce a large displacement deformation when the air compressor vibrates violently, causing the air compressor and other parts around the vehicle chassis to collide. The upper and lower elastic buffer shock-absorbing structure including the limiting structure is used for piston air compressors, and this type of piston air compressor is suitable for vehicles.

[0026] like Figure 1 As shown, in one embodiment, a top and bottom elastic buffer shock absorbing structure including a limiting structure is provided, and the structure includes: a shock absorbing pad 30, a limiting member 40, an embedding member 60 and a mounting member 50. Figure 1 and Figure 2As shown, the mounting member 50 is in the shape of a groove; the piston air compressor 10 is vertically located in the groove of the mounting member 50 and leaves a gap with the inner walls on both sides of the groove of the mounting member 50; a plurality of shock-absorbing pads 30 are arranged on the top surfaces on both sides of the groove of the mounting member 50 and are fixedly connected to the mounting member 50; the device also includes a mounting bracket 20 connected to the piston air compressor 10 and the vehicle, the mounting bracket 20 is fixed on the left and right sides of the piston air compressor 10, the mounting bracket 20 is bent and located in the gaps on the above-mentioned two sides, the side surface of the mounting bracket 20 is fixedly connected to the piston air compressor 10 and the top surface is higher than the top surfaces on both sides of the groove of the mounting member 50, and a plurality of connecting through holes are provided on the top surface, so that a space is formed between the top of the side plate of the mounting bracket 20 and the mounting member 50, and the limiting shock-absorbing structure including the shock-absorbing pad is fixed in the space.

[0027] like Figure 1 As shown, in one embodiment, the top of the arched shock-absorbing pad 30 has an opening extending in a first direction and extending at the lower end to the inner space of the shock-absorbing pad 30, and the bottom of the shock-absorbing pad 30 has a skirt portion 302 extending in a second direction; the first direction is perpendicular to the second direction;

[0028] Specifically, a plurality of shock-absorbing pads 30 are respectively arranged on the side surfaces of the mounting member 50, and the shock-absorbing pads 30 are in a hollow arch shape, and the shock-absorbing pads 30 include a first elastic layer 301 and a skirt portion 302; in another embodiment, the shock-absorbing pads 30 are provided in four numbers and are respectively arranged at both ends on both sides of the mounting member 50; wherein the first elastic layer 301 includes an upper section and a lower section, the upper section and the lower section are integrally formed and form a connected opening in the inner space of the shock-absorbing pad 30, the upper section surrounds an upper hole section 3011 forming the opening, and the lower section surrounds a lower hole section 3012 forming the opening, the aperture size of the upper hole section 3011 is consistent, and the aperture size of the lower hole section 3012 is from top to bottom. The aperture of the upper hole section 3011 is gradually increased, and the aperture of the upper hole section 3011 is smaller than the aperture of the lower hole section 3012; in another embodiment, the aperture of the lower hole section 3012 is consistent in size; a skirt portion 302 is provided on the outer side of the bottom of the lower section of the first elastic layer 301, the first elastic layer 301 and the skirt portion 302 are integrally formed, and the skirt portion 302 is arranged on the top surfaces on both sides of the groove of the mounting member 50, the skirt portion 302 is in the shape of a rectangular frame and the rectangular frame is fixedly connected to the top surfaces on both sides of the groove of the mounting member 50; in another embodiment, the skirt portion 302 can also be other shapes; in another embodiment, the first elastic layer 301 is made of rubber material, for example, vulcanized rubber.

[0029] like Figure 1As shown, in one embodiment, an insert 60 is provided in the shock absorbing pad 30, and the insert 60 includes a cylindrical main body portion 602 whose body extends along the first direction and a plate portion 601 located at the upper end of the cylindrical main body portion 602 and extending outwardly along the circumferential direction. Specifically, the insert 60 is in an inverted cylindrical shape and is located at the top of the first elastic layer 301 of the shock absorbing pad 30, the plate portion 601 is located at the top of the upper hole section 3011 and extends outwardly along the hole diameter, the cylindrical main body portion 602 is located on the hole wall of the upper hole section 3021 and extends along the axial direction and has a certain distance from the bottom of the upper hole section 3011, and the distance is expressed as It plays a buffering role when preventing the first elastic layer 301 from producing elastic deformation up and down when the vehicle vibrates, and avoids tearing between the insert 60 and the first elastic layer 301; a thread is provided on the inner wall of the cylindrical main body part 602, and the shock-absorbing pad 30 is fixedly connected to the connecting through hole of the mounting bracket 20 by screws through the thread, which is used to determine the position of the shock-absorbing pad 30 and avoid twisting of the top of the shock-absorbing pad 30 during installation and removal; in another embodiment, the insert 60 is a metal insert, for example, iron or copper. Of course, the insert 60 can also be an alloy material with a certain hardness, such as stainless steel.

[0030] like Figure 1 As shown, in one embodiment, a stopper 40 is provided in the shock absorbing pad 30, a part of the stopper 40 is built in the shock absorbing pad 30 and another part is built in the mounting member 50; the stopper 40 includes a columnar main body portion 401 extending along a first direction and a first stopper portion 402 extending outwardly along a circumferential direction at the lower end of the columnar main body portion 401, the columnar main body portion 401 passes through the mounting member 50 and the upper end extends into the opening of the shock absorbing pad 30, and the first stopper portion 402 is located in the mounting member 50; the columnar main body portion 401 extends along a first direction and a first stopper portion 402 extends outwardly along a circumferential direction. The outer side wall of the upper end of the insert 60 and the inner side wall of the opening of the shock absorbing pad 30 form an annular embedding groove, and the cylindrical main body part 602 of the embedding piece 60 is cooperatively embedded in the embedding groove of the columnar main body part 401, and the bottom of the cylindrical main body part 602 of the embedding piece 60 and the bottom of the embedding groove have a spacing in the first direction; in another embodiment, the columnar main body part 401 is a metal insert, such as iron or copper. Of course, the columnar main body part 401 can also be an alloy material with a certain hardness, such as stainless steel;

[0031] Specifically, the columnar main body 401 includes a vertical section 4011 located at the upper end and a second stopper 4012 located at the lower end of the vertical section 4011 and extending outwardly in the circumferential direction, and the vertical section 4011, the second stopper 4012 and the first stopper 402 are integrally formed, the vertical section 4011 is built into the shock absorbing pad 30 and the mounting member 50, the upper section of the vertical section 4011 is provided with a thread matching with the cylindrical main body 602 and the section is set as a threaded section, and the lower section of the vertical section 4011 is placed in the mounting member 50 together with the first stopper 402 through the through hole on the mounting member 50 and is not in contact with the mounting member 50. The first stopper 402 is provided with a hexagonal hole used in conjunction with the thread; wherein the second stopper 4012 is located below the threaded section and extends circumferentially along the second direction, and the second stopper 4012 is in contact with the top of the lower hole section 3012 of the first elastic layer 301, and the radius of the second stopper 4012 is between the radii of the upper hole section 3011 and the lower hole section 3012, and the second stopper 4012 is used to further strengthen the fixation between the vertical section 4011 and the first elastic layer 301, so as to prevent the first elastic layer 301 from generating excessive upward and downward elastic displacement in the first direction due to severe vibration;

[0032] The stopper 40 also includes an elastic sleeve 403 wrapped around the outer wall of the stopper 40, and the elastic sleeve 403 is axially hollow and arranged on the outer wall of the stopper 40, and the elastic sleeve 403 includes a stopper outer sleeve located outside the first stopper 402, and the elastic sleeve 403 also includes an outer sleeve located outside the second stopper 4012 and the outer sleeve below the second stopper 4012, and the outer sleeve below the second stopper 4012 is in close contact with the connecting through hole of the mounting member 50; when the limit damping structure is in the first state, the first stopper 402 The top surface of the outer sleeve and the bottom surface of the mounting member 50 have a buffering distance in the first direction, the buffering distance is greater than zero, and at this time, the distance between the top surface of the columnar main body portion 401 of the limiting member 40 and the top surface of the plate portion 601 of the insert 60 is a first distance; when the limiting shock absorbing structure is in the second state, the top surface of the outer sleeve of the first stopper 402 contacts the bottom surface of the mounting member 50, and at this time, the distance between the top surface of the columnar main body portion 401 of the limiting member 40 and the top surface of the plate portion 601 of the insert 60 is a second distance, which is smaller than the above-mentioned first distance;

[0033] Specifically: the elastic sleeve 403 is axially hollow and wrapped around the first stop portion 402, the portion below the threaded section of the vertical section 4011, and the outer wall of the second stop portion 4012. When the limiting shock-absorbing structure is in the first state, there is a certain buffer distance between the top of the elastic sleeve 403 located on the outer wall of the first stop portion 402 and the top surfaces on both sides of the groove of the mounting member 50, that is, there is a buffer distance between the limiting member 40 and the top surfaces on both sides of the groove of the mounting member 50. The buffer distance is assumed to be the deformation displacement distance x of the shock-absorbing pad 30 in the first direction, and the deformation displacement distance x matches the elastic deformation range of the shock-absorbing pad 30. ; and when the limiting structure of the shock-absorbing pad 30 changes from the first state to the second state, that is, when the first elastic layer 301 elastically buffers up and down in the first direction, the first elastic layer 301 drives the vertical section 4011 to slide up and down in the first direction at the same time, and the limiting member 40 does not produce left and right elastic movement in the second direction, so that the vertical section 4011 is fixed and cannot move in the second direction, thereby avoiding the elastic displacement of the first elastic layer 301 in the second direction, and then the shock-absorbing pad 30 does not produce left and right elastic movement in the second direction; in another embodiment, the elastic sleeve 403 is made of rubber material, for example, vulcanized rubber.

[0034] In one embodiment, the device can be mounted on a vehicle via a mounting member 50 .

[0035] When the vehicle loaded with the piston air compressor is running smoothly, the device is in a normal state, and the deformation displacement of the shock-absorbing pad 30 is mainly caused by the first elastic layer 301; when the shock-absorbing pad 30 is in a normal state, there is a gap x (the value of x is greater than 0) between the top surfaces of the two sides of the groove of the limiter 40 and the mounting member 50, and the gap x is the deformation displacement distance of the shock-absorbing pad 30 in the first direction; by reasonably controlling the gap x, the deformation displacement of the shock-absorbing structure of the piston air compressor under severe vibration can be guaranteed, and the shock-absorbing structure will not suffer from tearing failure and air compressor collision problems;

[0036] When a vehicle loaded with a piston air compressor is slightly bumped during driving, the piston air compressor 10 on the vehicle generates a slight vibration, which is reflected on the shock-absorbing pad 30. The piston air compressor 10 drives the mounting bracket 20 fixedly connected to the piston air compressor 10 to vibrate slightly, and the mounting bracket 20 drives the shock-absorbing pad 30 fixedly connected to the mounting bracket 20 to vibrate. At this time, the shock-absorbing pad 30 is in a vertical force state (the horizontal force can be almost ignored), and the first elastic layer 301 in the shock-absorbing pad 30 is in a stretched or squeezed state in the first direction, so that the elastic deformation of the first elastic layer 301 in the vertical direction increases. At the same time, the limiter 40 in the first elastic layer 301 also moves in the vertical direction under the drive of the elastic deformation, so that the gap distance between the limiter 40 and the mounting member 50 changes;

[0037] When a vehicle loaded with a piston air compressor encounters a speed bump or bad road conditions during driving, the vehicle is violently bumped, causing the piston air compressor 10 on the vehicle to vibrate greatly. At this time, the shock absorbing pad 30 continues to be in a vertical force state (the horizontal force is almost negligible), causing the first elastic layer 301 to continue to produce elastic deformation in the vertical direction and the elastic deformation amount continues to increase, causing the gap distance between the limiter 40 and the mounting member 50 to continue to change, until the elastic deformation displacement of the first elastic layer 301 in the first direction exceeds When the deformation displacement distance x (elastic deformation range of the shock-absorbing pad 30) is exceeded, the gap distance between the limit member 40 and the mounting member 50 disappears. At this time, the limit member 40 and the mounting member 50 are in contact or extrusion state. The second stop portion 4012 of the limit member 40 prevents the limit member 40 from continuing to displace in the vertical direction, thereby preventing the shock-absorbing pad 30 from continuing to elastically deform and displace in the vertical direction, preventing the first elastic layer 301 from tearing with the embedding member 60 under the action of elastic deformation displacement, thereby effectively avoiding rubber tearing caused by long-term elastic deformation of the shock-absorbing pad 30.

[0038] The vehicle piston air compressor device including the limit shock-absorbing structure cooperates with the shock-absorbing pad 30, the mounting member 50 and the limit member 40, and reasonably sets the maximum deformation displacement distance x of the shock-absorbing pad 30. When the elastic deformation of the shock-absorbing pad 30 exceeds the maximum deformation displacement distance x, the limit member 40 installed inside the shock-absorbing pad 30 will contact the mounting member 50, thereby effectively avoiding the rubber tearing of the shock-absorbing pad 30 caused by long-term elastic deformation, and solving the problems of tearing and failure of the shock-absorbing pad caused by long-term severe vibration in the current vehicle piston air compressor device.

[0039] The above description is merely a preferred embodiment of one or more embodiments of the present specification and is not intended to limit one or more embodiments of the present specification. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present specification shall be included in the scope of protection of one or more embodiments of the present specification.

Claims

1. A position limiting shock absorbing structure, characterized in that: include: The shock-absorbing pad is in an arched shape, the top of which has an opening extending in a first direction and the lower end of which extends to the inner space of the shock-absorbing pad, and the bottom of the shock-absorbing pad has a skirt portion extending in a second direction; the first direction is perpendicular to the second direction; The limiting member comprises a columnar main body portion extending along a first direction and a first stop portion extending outwardly along a circumferential direction at a lower end of the columnar main body portion, wherein the columnar main body portion passes through the mounting member and the upper end thereof extends into the opening of the shock-absorbing pad; an annular embedding groove is formed between an outer side wall of the upper end of the columnar main body portion and an inner side wall of the opening of the shock-absorbing pad; The insert comprises a cylindrical main body portion extending along a first direction and a plate portion located at an upper end of the cylindrical main body portion and extending outwardly along a circumferential direction; the cylindrical main body portion is cooperatively embedded in the embedding groove of the columnar main body portion; An elastic sleeve wrapped around the outer side wall of the limiting member, the elastic sleeve comprising a stopper outer sleeve portion located outside the first stopper portion; When the limiting shock-absorbing structure is in a first state, the top surface of the outer sleeve of the first stop portion and the bottom surface of the mounting member have a buffer distance in a first direction, and the buffer distance is greater than zero; the top surface of the columnar main body of the limiting member and the top surface of the plate portion of the embedded member have a first distance.

2. The position limiting and shock absorbing structure according to claim 1, characterized in that: When the limiting shock-absorbing structure is in the second state, the top surface of the outer sleeve of the first stop portion contacts the bottom surface of the mounting member; the top surface of the columnar main body of the limiting member and the top surface of the plate portion of the embedded member are spaced at a second distance, which is smaller than the first distance.

3. The position limiting and shock absorbing structure according to claim 1, characterized in that: A bottom of the cylindrical main body of the insert is spaced apart from a bottom of the insert groove in a first direction.

4. The position limiting and shock absorbing structure according to claim 1, characterized in that: The columnar main body of the position-limiting member comprises a vertical section at the upper end and a second stopper at the lower end of the vertical section and extending outwardly in the circumferential direction.

5. The position limiting and shock absorbing structure according to claim 4, characterized in that: The elastic sleeve of the limiting member further comprises an outer sleeve portion located at the periphery of the second stop portion and the outer sleeve portion below the second stop portion, and the outer sleeve portion of the outer sleeve portion below the second stop portion contacts the mounting member.

6. The position limiting and shock absorbing structure according to claim 1, characterized in that: The position limiting shock absorbing structure also includes a mounting bracket that connects all the position limiting shock absorbing structures to the piston air compressor and the vehicle. The mounting bracket is fixed on the left and right sides of the piston air compressor. A space is formed between the top of the side plate of the mounting bracket and the mounting part, and the position limiting shock absorbing structure including the shock absorbing pad is fixed in the space.

7. A piston air compressor, characterized in that: It comprises the limiting shock absorbing structure as described in any one of claims 1 to 6.

8. A vehicle, characterized in that Includes the piston air compressor described in claim 7.

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