Auxiliary air spring

Abstract

The utility model relates to an auxiliary air spring, which comprises an air spring body consisting of an air spring, an upper iron component and a lower connecting piece, the upper iron component and the lower connecting piece are arranged at the upper end and the lower end of the air spring, a spiral spring is arranged on the outer edge of the air spring body, and the spiral spring is contacted with the upper iron component and the lower connecting piece to provide elastic force; the spiral spring is sleeved on the outer edge of the air spring. According to the auxiliary air spring, the load capable of being borne by a vehicle is increased, and the travel requirement can be better met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile parts especially auxiliary air spring. BACKGROUND

[0002] The suspension mode with air spring as elastic element is called air suspension system. At present, domestic commercial vehicles are slowly transiting from steel plate spring suspension to air suspension system, and foreign countries are very mature in this respect. In order to further tap the user market, the automobile industry begins to improve the purchasing power of consumers through automobile modification industry, and the air spring is a very important part of the air suspension system and has a high use rate in automobile modification. The modified car is a car specially modified for modification. It mainly modifies the original factory power performance and demand according to the individual needs of the car owner, and also adds a trailer for load modification. At present, most of the suspensions of domestic and foreign vehicles use the structure combined with helical springs and torsion bars. It is particularly urgent to design a new type of auxiliary air spring which can be simply and conveniently installed. SUMMARY

[0003] The utility model discloses in order to overcome at least one problem in above -mentioned, provide a kind of auxiliary air spring, improve the load that vehicle can bear, more satisfy the demand of travel.

[0004] The utility model discloses the technical scheme that technical problem is solved is as follows: a kind of auxiliary air spring, including air spring, the upper iron piece assembly and lower connecting piece of air spring, upper iron piece assembly and lower connecting piece are set to the upper end and lower end of air spring, air spring body is provided with helical spring along outer edge, and helical spring is in contact with upper iron piece assembly and lower connecting piece, provides elastic force;Helical spring is sleeved on the outer edge of air spring.

[0005] As preferred, the helical spring is attached to the outer wall of the air spring, providing lateral support force.

[0006] As preferred, the upper iron piece assembly and the lower connecting piece are respectively provided with an upper spring seat and a lower spring seat, and the helical spring is sleeved on the outer edge of the air spring, and the upper end and the lower end are respectively in contact with the upper spring seat and the lower spring seat, to provide elastic thrust to the upper spring seat and the lower spring seat.

[0007] As preferred, an upper rubber pad is provided between the air spring and the upper spring seat; the upper spring seat includes a first iron piece, a second iron piece and a third iron piece arranged from top to bottom, the third iron piece is downwardly turned over to form a downward clamping opening, the upper rubber pad is clamped in the clamping opening of the third iron piece, and a concave-convex groove is provided between the inner edge of the turned-over portion and the upper rubber pad to connect stably.

[0008] As preferred, the air spring comprises an upper shell, a lower shell, hot melt welding between the upper shell and the lower shell, a middle part forming a hot melt welding site; the upper shell is provided with a gas nozzle insert welding table at the upper end, the gas nozzle insert welding table is provided with a copper gas nozzle insert, and the copper gas nozzle insert is connected with a gas pipe.

[0009] As preferred, the second iron piece is attached to the third iron piece, the second iron piece is upwardly flanged, and extends to a horizontal outer edge to form a stress platform, and the upper rubber pad is sleeved on the second iron piece and attached to the stress platform;

[0010] The first iron piece is attached to the stress platform of the second iron piece, the middle part of the first iron piece is an opening, the opening is upwardly flanged to form a narrow opening structure, the gas pipe passes through the middle part of the third iron piece and the second iron piece and is led out of the opening of the first iron piece, and a containing cavity is formed between the first iron piece and the second iron piece, and a limiting rubber is arranged in the containing cavity to fix the gas pipe.

[0011] As preferred, a lower rubber pad is arranged between the air spring and the lower spring seat, the lower spring seat comprises a fourth iron piece and a fifth iron piece, the fifth iron piece is arranged on the upper part of the fourth iron piece, the fifth iron piece is annular in structure and is upwardly flanged to form an open cavity for the lower spring seat, and the lower rubber pad is arranged in the open cavity; the lower end of the coil spring is sleeved on the flange of the fifth iron piece; corresponding screw holes are arranged between the fourth iron piece and the fifth iron piece, and bolts are arranged in the screw holes.

[0012] As preferred, at least one connecting bolt is arranged between the first iron piece and the second iron piece.

[0013] As preferred, the stress platform of the second iron piece is provided with a positioning hole, and the upper spring seat is provided with a corresponding positioning pin column which is clamped into the positioning hole.

[0014] As preferred, a buffer pad is further arranged between the upper spring seat and the coil spring.

[0015] The auxiliary air spring can effectively protect precision instruments, electrical equipment and goods on the vehicle, reduce the maintenance frequency and cost, prolong the service life of the vehicle, greatly reduce the impact of the vehicle on the road surface, and prolong the service life of the road surface. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model is further described below in combination with the drawings and examples.

[0017] Figure 1 is the overall structure schematic view of the auxiliary air spring of the utility model;

[0018] Figure 2It is the upper iron spare assembly structure schematic view of the auxiliary air spring of the utility model.

[0019] Figure 3 It is the upper spring seat structure schematic view of the auxiliary air spring of the utility model.

[0020] Figure 4 It is the air spring structure schematic view of the auxiliary air spring of the utility model.

[0021] Figure 5 It is the lower spring seat structure schematic view of the auxiliary air spring of the utility model.

[0022] Reference signs:

[0023] Air pipe 101, upper iron spare assembly 102, upper spring seat 103, buffer pad 104, upper rubber pad 105, air spring 106, spiral spring 107, lower rubber pad 108, lower spring seat 109,

[0024] Connecting bolt 201, limiting rubber 202, positioning hole 203, first iron spare 204, second iron spare 205, third iron spare 206, buckle position 207,

[0025] Positioning pin column 301, sink table 302, buffer pad cooperation position 303,

[0026] Copper air nozzle insert 601, air nozzle insert welding table 602, upper shell 603, hot melt welding position 604, lower shell 605,

[0027] Fifth iron spare 701, bolt cap 702, bolt column 703, fourth iron spare 704, DETAILED DESCRIPTION

[0028] The utility model will be further explained in detail in connection with the drawings. These drawings are all simplified schematic views, and only schematically show the basic structure of the utility model, therefore, it only shows the relevant constitution of the utility model.

[0029] As Figure 1 The auxiliary air spring shown in the figure is composed of air spring 106 body and spiral spring 107.

[0030] The air spring 106 body is composed of air spring 106, upper iron spare assembly 102 and lower connecting spare arranged on the upper and lower ends of air spring 106.

[0031] The spiral spring 107 is sleeved on the outer edge of air spring 106, and the two ends of spiral spring 107 contact upper iron spare assembly 102 and lower connecting spare, providing elastic force; spiral spring 107 is attached to the outer wall of air spring 106, providing side supporting force.

[0032] In the embodiment, the upper iron piece assembly 102 and the lower connecting piece are respectively provided with an upper spring seat 103 and a lower spring seat 109, and the coil spring 107 is sleeved on the outer edge of the air spring 106, and the upper end and the lower end of the coil spring 107 respectively contact the upper spring seat 103 and the lower spring seat 109 to provide elastic thrust to the upper spring seat 103 and the lower spring seat 109. Through the shape design, the two ends of the coil spring 107 are perfectly matched with the upper spring seat 103 and the lower spring seat 109, and the coil spring 107 plays a buffering role when moving.

[0033] In the embodiment, the upper rubber pad 105 is arranged between the air spring 106 and the upper spring seat 103, and the lower rubber pad 108 is arranged between the air spring 106 and the lower spring seat 109.

[0034] Referring to Figure 4 The air spring 106 includes an upper shell 603 and a lower shell 605, the upper shell 603 and the lower shell 605 are hot melt welded, and a hot melt welding position 604 is formed in the middle part; the upper shell 603 is provided with a gas nozzle insert welding table 602, the gas nozzle insert welding table 602 is provided with a copper gas nozzle insert 601, and the copper gas nozzle insert 601 is connected with a gas pipe 101.

[0035] In the embodiment, the air spring 106 is directly placed in the coil spring 107, due to the elastic property of the air spring 106, the air spring 106 is inflated, the coil spring 107 can effectively limit the inflated outer diameter of the air spring 106, so that the air spring 106 moves in the coil spring 107, the upper end and the lower end of the air spring 106 are in contact with the surface of the rubber pad, avoiding direct contact with the upper iron piece assembly 102 and the lower spring disc assembly, which can effectively improve the service life of the air spring 106; the copper gas nozzle on the air spring 106 is assembled with the gas pipe 101, so that the gas smoothly enters the inside of the air spring 106, and the load capacity of the vehicle is improved.

[0036] Referring to Figure 2 The upper spring seat 103 includes a first iron piece 204, a second iron piece 205 and a third iron piece 206 arranged from top to bottom,

[0037] The third iron piece 206 is downwardly turned over to form a downward clamping opening, the upper rubber pad 105 is clamped in the clamping opening of the third iron piece 206, and a concave-convex groove is arranged between the inner edge of the turned-over edge and the upper rubber pad 105 to form a buckle position 207, the connection is stable through interference press fitting, and the loosening is prevented.

[0038] The second iron piece 205 is attached to the third iron piece 206, the second iron piece 205 is turned over upwardly and extends to a horizontal outer edge to form a stress table, and the upper rubber pad 105 is sleeved on the second iron piece 205 and attached to the stress table;

[0039] The first iron piece 204 is attached to the force receiving platform of the second iron piece 205, the middle part of the first iron piece 204 is an opening, the opening is turned up to form a narrow opening structure, the air pipe 101 passes through the third iron piece 206 and the middle part of the second iron piece 205 and is out of the opening of the first iron piece 204, a containing cavity is formed between the first iron piece 204 and the second iron piece 205, a limiting rubber 202 is arranged in the containing cavity and is used for fixing the air pipe 101;

[0040] At least one connecting bolt 201 is arranged between the first iron piece 204 and the second iron piece 205, which is mainly used for connecting with the suspension of the vehicle and is fixed on the suspension.

[0041] Referring to Figure 3 The force receiving platform of the second iron piece 205 is provided with a positioning hole 203, the upper spring seat 103 is provided with a corresponding positioning pin column 301 which is clamped into the positioning hole 203, the upper spring seat 103 is further provided with a sunken platform 302 which has a position avoiding effect and is used for accommodating the nut of the connecting bolt 201. The upper spring seat 103 is further provided with a round-shaped buffer pad matching position 303.

[0042] The buffer pad block 104 is further arranged between the upper spring seat 103 and the spiral spring 107, and the buffer pad block 104 is attached to the buffer pad matching position 303.

[0043] Referring to Figure 5 The lower spring seat 109 includes a fourth iron piece 704 and a fifth iron piece 701 which is arranged on the upper part of the fourth iron piece 704 and has a ring structure and is turned up to the upper part, so that the lower spring seat 109 forms an open cavity, the lower rubber pad 108 is arranged in the open cavity and is not easy to fall out, the lower end of the spiral spring 107 is sleeved on the turned-up periphery of the fifth iron piece 701, corresponding screw holes are arranged between the fourth iron piece 704 and the fifth iron piece 701, a bolt is arranged in the screw holes, the bolt is out of the upper part, the bolt cap 702 is located on the upper part, and the bolt column 703 is located on the lower part. Through the bolt, the bolt column 703 is locked on the suspension and is not loose, and the spiral spring 107 cannot slide out.

[0044] The spiral spring is a metal piece and has a spiral structure, the main component is spring steel, and in addition to meeting the requirements of high strength limit and yield limit, the material must also have high elastic limit, fatigue limit, impact toughness, plasticity and good heat treatment process; the manufacturing process mainly includes winding, stress relief annealing, section grinding, shot blasting, correction, stress relief annealing, strong pressure treatment and surface treatment.

[0045] The lower rubber pad is a rubber product, the main component is rubber, and the rubber pad is formed by vulcanization; the lower rubber pad is mainly assembled with the lower spring seat; similarly, the other side is mainly in contact with the air spring to increase the service life of the air spring.

[0046] The lower spring disc assembly seat is a metal product, which is mainly made of bolts, metal plates and the like, the metal plates are mainly made through stamping and stamping forming, and the three are combined through welding; the bolts are mainly used for connecting with the suspension.

[0047] The working principle is that when the air pipe 101 is connected, air is filled from the air pipe 101 into the air spring 106, at this time the air spring 106 expands until it is restrained by the coil spring 107, and as the air pressure increases, the bearing capacity also increases; due to the presence of the air spring 106, the load that the vehicle can bear will increase, which can better meet the needs of people traveling.

[0048] When the vehicle is running normally, it will move up and down with the unevenness of the road surface, at this time the air spring product fixed at both ends of the suspension will move with the vehicle, since the air spring 106 is a kind of shock-absorbing function, and the natural frequency is low, it can effectively filter the vibration brought by the road bumps, and improve the comfort of the vehicle; in addition, due to the design of the air spring 106, the two ends contain rubber buffer blocks, which can also filter the vibration and improve the comfort, and can avoid the direct contact between the air spring 106 and the metal parts, and improve the service life of the air spring 106.

[0049] The air spring 106 in the embodiment is made of polyurethane material by injection molding, and the finished product is relatively soft and can be pinched at will, so when the elastic element of the suspension on the vehicle is originally a coil spring 107 or is damaged and replaced, the corresponding specification of the air spring 106 can be matched according to the size and demand of the coil spring 107, and directly installed and used; the installation method is also relatively simple, the air inlet of the pinched air spring 106 is blocked, at this time the air spring 106 cannot rebound due to the blocked air inlet, at this time according to the direction it can be directly inserted into the gap of the coil spring 107, when placed, it can be directly inserted into the tube and inflated, which makes the installation more convenient and fast.

[0050] Based on the above ideal embodiment of the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. An auxiliary air spring, comprising an air spring body composed of an air spring, an upper iron component and a lower connecting component arranged at the upper and lower ends of the air spring, characterized in that: The helical spring is provided outside the air spring body, and contacts the upper iron piece assembly and the lower connecting piece to provide elastic force.

2. The supplemental air spring of claim 1, wherein: The helical spring is attached to the outer wall of the air spring to provide lateral supporting force.

3. The supplemental air spring of claim 2, wherein: The upper iron piece assembly and the lower connecting piece are respectively provided with upper spring seats and lower spring seats, and the helical spring is sleeved outside the air spring body, and the upper end and the lower end thereof respectively contact the upper spring seats and the lower spring seats to provide elastic thrust to the upper spring seats and the lower spring seats.

4. The supplemental air spring of claim 3, wherein: An upper rubber pad is arranged between the air spring and the upper spring seat.

5. An auxiliary air spring as in claim 4, wherein: The air spring comprises an upper shell and a lower shell, and the upper shell and the lower shell are hot melt welded, and a hot melt welding position is formed in the middle part.

6. An auxiliary air spring as in claim 5, wherein: The second iron piece is attached to the third iron piece, and the second iron piece is upwardly turned over and extends to a horizontal outer edge to form a stress platform, and the upper rubber pad is sleeved on the second iron piece and attached to the stress platform. The first iron piece is attached to the stress platform of the second iron piece, the middle part of the first iron piece is an opening, the opening is upwardly turned over to form a narrow opening structure, the air pipe passes through the middle part of the third iron piece and the second iron piece and is led out from the opening of the first iron piece, a receiving cavity is formed between the first iron piece and the second iron piece, and a limiting rubber is arranged in the receiving cavity to fix the air pipe.

7. The supplemental air spring of claim 3, wherein, A lower rubber pad is arranged between the air spring and the lower spring seat, the lower spring seat comprises a fourth iron piece and a fifth iron piece, the fifth iron piece is arranged on the upper part of the fourth iron piece, the fifth iron piece is annular and is upwardly turned over to form an open cavity, and the lower rubber pad is arranged in the open cavity, the lower end of the helical spring is sleeved on the turned-over edge of the fifth iron piece, corresponding screw holes are arranged between the fourth iron piece and the fifth iron piece, and bolts are arranged in the screw holes.

8. The supplemental air spring of claim 6, wherein: At least one connecting bolt is arranged between the first iron piece and the second iron piece.

9. An assisted air spring as in claim 8, wherein: The stress platform of the second iron piece is provided with a positioning hole, and the upper spring seat is provided with a corresponding positioning pin column which is clamped in the positioning hole.

10. The assisted air spring of claim 8, wherein: A buffer pad is further arranged between the upper spring seat and the helical spring.

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