Metal cover plate of composite air spring

Abstract

The invention discloses a metal cover plate of a composite air spring, and relates to the technical field of air spring cover plates, the metal cover plate comprises an air spring main body, an air spring cover plate and an air tap, a piston rod slidably penetrates through the middle of the top surface of the air spring cover plate, and the outer part of the air spring cover plate is detachably connected with a positioning ring plate with an inverted L-shaped longitudinal section; a plurality of elastic positioning pieces are arranged on the inner side wall of the positioning ring plate in a surrounding manner; through the arrangement of the elastic positioning piece, when the air spring cover plate is completely connected to the air spring body in a threaded mode, the positioning insertion block corresponds to the annular positioning groove, the positioning insertion block can be inserted into the inner side of the annular positioning groove under the elastic force of the buffer spring, the positioning insertion block is matched with the annular positioning groove, and the air spring cover plate can be effectively limited; a fixing structure is added to the air spring cover plate, so that the air spring cover plate and the air spring main body are prevented from loosening during long-term bumping.

Description

Technical Field

[0001] The invention relates to the technical field of air spring cover plates, and in particular to a metal cover plate of a composite air spring. Background Art

[0002] An air spring is a spring assembly made by utilizing the compressibility of air in a sealed container. A common type of air spring is an airbag cylinder (i.e., a piston rod structure). The end surface of the air storage space of this spring assembly needs to be protected by a cover plate.

[0003] In order to facilitate the installation of composite air spring covers, conventional covers are generally connected to the air spring body by threads, so that only a simple knob is required for disassembly and assembly of the cover. However, in practice, air springs are generally used on automobile chassis. Air springs used under the vehicle are often subjected to long-term vibration and bumps during vehicle operation, which may cause the threaded connection between the cover and the air spring body to loosen, seriously affecting the use effect. Summary of the invention

[0004] In order to solve the above technical problems, a metal cover plate of a composite air spring is provided, which solves the problem that in the prior art, air springs are generally used on automobile chassis. When used under the vehicle, the air springs are often subjected to long-term vibration and bumps during the operation of the vehicle, which causes the threaded connection between the cover plate and the air spring body to loosen, seriously affecting the use effect.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: a metal cover plate of a composite air spring, comprising an air spring body, an air spring cover plate threadedly connected to the top of the air spring body, and an air nozzle arranged on the air spring cover plate, a piston rod slidingly penetrates the middle of the top surface of the air spring cover plate, a positioning ring plate with an inverted L-shaped longitudinal section is detachably connected to the outside of the air spring cover plate, a plurality of elastic positioning members are arranged around the inner side wall of the positioning ring plate, and a traction member matching the elastic positioning member is arranged on the outer wall of the positioning ring plate;

[0006] The elastic positioning member includes a fixed slide fixed on the inner wall of the positioning ring plate and a positioning plug slidably arranged in the shape of a right-angle trapezoid on the inner side of the fixed slide, the hypotenuse of the positioning ring plate is distributed downward, an annular positioning groove is opened on the outer wall of the air spring body, one end of the positioning plug is inserted into the inner side of the annular positioning groove, and a buffer spring is fixed between the other end of the positioning plug and the inner wall of the positioning ring plate.

[0007] Preferably, the traction member includes two limiting ring plates which are symmetrically fastened and sleeved on the outer wall of the positioning ring plate in an upper and lower manner and a movable ring which is rotatably connected between the two limiting ring plates. A pull rope is fixed on the inner wall of the movable ring, and the end of the pull rope is inserted into the fixed slide and fixedly connected to the positioning plug.

[0008] Preferably, a fixing ring fixedly connected to the above-mentioned limiting ring plate is also sleeved on the outer wall of the positioning ring plate, a torsion spring is arranged between the fixing ring and the movable ring, and the two ends of the torsion spring are respectively fixedly connected to the fixing ring and the torsion spring.

[0009] Preferably, a fixing plate is fixed on the outer wall of the lower limiting ring plate, a locking screw is threadedly penetrated on the fixing plate, and a positioning hole matched with the locking screw is opened on the outer wall of the movable ring.

[0010] Preferably, a connecting ring that fits the top surface of the positioning ring plate is fixedly sleeved on the outer wall of the air spring cover plate, and a plurality of locking studs are fixed around the top surface of the connecting ring. The ends of the locking studs pass through the positioning ring plate and are threadedly connected to the locking studs, and the locking studs are against the top surface of the positioning ring plate.

[0011] Preferably, a paddle is fixed on the outer wall of the movable ring.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] (1) By setting the elastic positioning piece, when the air spring cover is completely threadedly connected to the air spring body, the positioning plug corresponds to the annular positioning groove, and the positioning plug can be inserted into the inner side of the annular positioning groove under the elastic force of the buffer spring. The positioning plug cooperates with the annular positioning groove to effectively limit the air spring cover, and add a fixing structure to the air spring cover to prevent the air spring cover and the air spring body from loosening when subjected to long-term bumps.

[0014] (2) Through the setting of the traction member, when the air spring cover needs to be separated and disassembled later, it is only necessary to simply turn the paddle to cause the movable ring to rotate between the two limit ring plates. The rotating movable ring can then use multiple pull ropes to synchronously pull the positioning blocks on the inner side of several fixed slides, so that the positioning blocks in several elastic positioning members are synchronously disengaged from the inner side of the annular positioning groove, thereby quickly releasing the fixing effect.

[0015] (3) Through the setting of the locking screw and the positioning hole, when the movable ring is rotated to disengage the positioning plug from the inner side of the annular positioning groove, it is only necessary to adjust the positioning hole to a position corresponding to the locking screw, and then insert the locking screw into the inner side of the positioning hole by turning the knob to lock the movable ring, thereby offsetting the restoring force of the torsion spring on the movable ring and ensuring the stability of the movable ring, so that the manual hand can be freed to remove the air spring cover by turning the knob.

[0016] (4) By setting the locking stud and the locking nut, the knob locking nut is turned to make the locking nut detach from the locking stud rod under the threaded structure, that is, the fixed connection between the positioning ring plate and the connecting ring is released, so as to facilitate the disassembly and separation of the positioning ring plate, the limit ring plate and the movable ring from the air spring cover plate, avoid the direct integral connection between the positioning ring plate and the air spring cover plate, and replace them together when the air spring cover plate is damaged, resulting in a waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at A in the middle;

[0020] Figure 4 For the present invention Figure 2 Schematic diagram of the structure at point B in the middle.

[0021] The numbers in the figure are:

[0022] 1. Air spring body; 2. Air spring cover; 3. Air nozzle; 4. Piston rod; 5. Positioning ring plate; 6. Fixed slide seat; 7. Positioning plug; 8. Annular positioning groove; 9. Buffer spring; 10. Limiting ring plate; 11. Movable ring; 12. Pull rope; 13. Fixed ring; 14. Torsion spring; 15. Pick; 16. Fixed plate; 17. Locking screw; 18. Positioning hole; 19. Connecting ring; 20. Locking stud; 21. Locking nut. DETAILED DESCRIPTION

[0023] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0024] Reference Figure 1-4As shown, a metal cover plate of a composite air spring comprises an air spring body 1, an air spring cover plate 2 threadedly connected to the top of the air spring body 1, and an air nozzle 3 arranged on the air spring cover plate 2, and a piston rod 4 slidingly penetrates the middle of the top surface of the air spring cover plate 2;

[0025] The threaded connection between the air spring cover 2 and the air spring body 1 facilitates the installation and connection of the air spring cover 2 and the air spring body 1 to a certain extent. The air spring body 1 and the air spring cover 2 can be quickly disassembled and assembled by simply turning a simple knob.

[0026] Further, refer to Figure 2-3 As shown, it is worth noting that the air spring cover plate 2 is detachably connected to the outside with a positioning ring plate 5 having an inverted L-shaped longitudinal section, a plurality of elastic positioning members are arranged around the inner side wall of the positioning ring plate 5, and a traction member cooperating with the elastic positioning member is arranged on the outer wall of the positioning ring plate 5;

[0027] The elastic positioning member includes a fixed slide 6 fixed on the inner wall of the positioning ring plate 5 and a positioning plug 7 slidably arranged in the inner side of the fixed slide 6 in a right-angle trapezoidal shape. The hypotenuse of the positioning ring plate 5 is distributed downward. An annular positioning groove 8 is opened on the outer wall of the air spring body 1. One end of the positioning plug 7 penetrates into the inner side of the annular positioning groove 8. A buffer spring 9 is fixed between the other end of the positioning plug 7 and the inner wall of the positioning ring plate 5.

[0028] By setting the elastic positioning piece, when the air spring cover 2 is threadedly screwed onto the air spring body 1, the beveled edge of the positioning block 7 in the pre-elastic positioning piece can contact the top of the air spring body 1, and the inner side of the fixed slide seat 6 is squeezed and contracted and the buffer spring 9 is compressed and deformed. When the air spring cover 2 is completely threadedly connected to the air spring body 1, the positioning block 7 corresponds to the annular positioning groove 8, and the positioning block 7 can be inserted into the inner side of the annular positioning groove 8 under the elastic force of the buffer spring 9. In this way, the positioning block 7 cooperates with the annular positioning groove 8 to effectively limit the air spring cover 2, and add a fixing structure to the air spring cover 2 to prevent the air spring cover 2 and the air spring body 1 from loosening when subjected to long-term bumps.

[0029] Further, refer to Figure 1-3 As shown, it is worth noting that the traction member includes two upper and lower symmetrical limit ring plates 10 fastened and sleeved on the outer wall of the positioning ring plate 5 and a movable ring 11 rotatably connected between the two limit ring plates 10, and a pull rope 12 is fixed on the inner wall of the movable ring 11, and the end of the pull rope 12 is inserted into the fixed slide seat 6 and fixedly connected to the positioning plug block 7;

[0030] A paddle 15 is fixed on the outer wall of the movable ring 11;

[0031] By setting the traction part, when the air spring cover 2 needs to be separated and disassembled later, it is only necessary to simply turn the paddle 15 to cause the movable ring 11 to rotate between the two limit ring plates 10. The rotating movable ring 11 can synchronously pull the positioning blocks 7 on the inner side of several fixed slides 6 by multiple pull ropes 12, so that the positioning blocks 7 in several elastic positioning parts are synchronously disengaged from the inner side of the annular positioning groove 8, thereby quickly releasing the fixing effect.

[0032] Further, refer to Figure 3 As shown, it is worth noting that a fixing ring 13 fixedly connected to the above-mentioned limiting ring plate 10 is sleeved on the outer wall of the positioning ring plate 5, and a torsion spring 14 is arranged between the fixing ring 13 and the movable ring 11, and the two ends of the torsion spring 14 are fixedly connected to the fixing ring 13 and the torsion spring 14 respectively;

[0033] Through the setting of the torsion spring 14, when the movable ring 11 is rotated, the movable ring 11 can synchronously twist the torsion spring 14 to deform, so that the torsion spring 14 accumulates force, and then when the paddle 15 is released, the movable ring 11 can quickly rotate under the elastic force of the torsion spring 14, releasing the pulling on the positioning block 7, so that the positioning block 7 can be quickly reset under the elastic force of the buffer spring 9, which is convenient for secondary use.

[0034] Further, refer to Figure 1 As shown, it is worth noting that a fixing plate 16 is fixed on the outer wall of the lower limit ring plate 10, a locking screw 17 is threaded through the fixing plate 16, and a positioning hole 18 adapted to the locking screw 17 is opened on the outer wall of the movable ring 11;

[0035] Through the setting of the locking screw 17 and the positioning hole 18, when the movable ring 11 is rotated to disengage the positioning plug 7 from the inner side of the annular positioning groove 8, it is only necessary to adjust the positioning hole 18 to a position corresponding to the locking screw 17, and then insert the knob locking screw 17 into the inner side of the positioning hole 18 to lock the movable ring 11, offsetting the restoring force of the torsion spring 14 on the movable ring 11, and ensuring the stability of the movable ring 11, so that the hands can be freed up and the knob can be turned to remove the air spring cover 2.

[0036] Further, refer to Figure 2 and Figure 4 As shown, it is worth noting that a connecting ring 19 that fits the top surface of the positioning ring plate 5 is fixedly sleeved on the outer wall of the air spring cover plate 2, and a plurality of locking studs 20 are fixed around the top surface of the connecting ring 19. The ends of the locking studs 20 penetrate the positioning ring plate 5 and are threadedly connected with the locking studs 20, and the locking studs 20 abut against the top surface of the positioning ring plate 5.

[0037] By setting the locking stud 20 and the locking nut 21, the knob locking nut 21 is turned to make the locking nut 21 detach from the rod of the locking stud 20 under the threaded structure, that is, the fixed connection between the positioning ring plate 5 and the connecting ring 19 is released, so as to facilitate the disassembly and separation of the positioning ring plate 5, the limiting ring plate 10 and the movable ring 11 from the air spring cover plate 2 as a whole, and avoid the positioning ring plate 5 and the air spring cover plate 2 being directly connected as an integral whole, and replacing them together when the air spring cover plate 2 is damaged, causing waste of resources.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A metal cover plate of a composite air spring, comprising an air spring body (1), an air spring cover plate (2) threadedly connected to the top of the air spring body (1), and an air nozzle (3) arranged on the air spring cover plate (2), a piston rod (4) slidingly penetrating the middle of the top surface of the air spring cover plate (2), characterized in that: The air spring cover plate (2) is detachably connected to the outside with a positioning ring plate (5) having an inverted L-shaped longitudinal section, the inner side wall of the positioning ring plate (5) is surrounded by a plurality of elastic positioning members, and the outer wall of the positioning ring plate (5) is provided with a traction member matched with the elastic positioning member; The elastic positioning member comprises a fixed slide (6) fixed on the inner wall of the positioning ring plate (5) and a positioning plug (7) slidably arranged in the inner side of the fixed slide (6) in the shape of a right-angle trapezoid. The inclined edge of the positioning ring plate (5) is distributed downward. An annular positioning groove (8) is provided on the outer wall of the air spring body (1). One end of the positioning plug (7) penetrates into the inner side of the annular positioning groove (8). A buffer spring (9) is fixed between the other end of the positioning plug (7) and the inner wall of the positioning ring plate (5).

2. The metal cover plate of a composite air spring according to claim 1, characterized in that: The traction member comprises two upper and lower symmetrical limit ring plates (10) which are fastened and sleeved on the outer wall of the positioning ring plate (5) and a movable ring (11) which is rotatably connected between the two limit ring plates (10). A pull rope (12) is fixed on the inner wall of the movable ring (11). The end of the pull rope (12) is inserted into the fixed slide seat (6) and is fixedly connected to the positioning plug block (7).

3. The metal cover plate of a composite air spring according to claim 2, characterized in that: A fixing ring (13) fixedly connected to the limiting ring plate (10) is sleeved on the outer wall of the positioning ring plate (5); a torsion spring (14) is arranged between the fixing ring (13) and the movable ring (11); and two ends of the torsion spring (14) are fixedly connected to the fixing ring (13) and the torsion spring (14) respectively.

4. The metal cover plate of a composite air spring according to claim 3, characterized in that: A fixing plate (16) is fixed on the outer wall of the lower limiting ring plate (10), a locking screw (17) is threadedly penetrated on the fixing plate (16), and a positioning hole (18) adapted to the locking screw (17) is opened on the outer wall of the movable ring (11).

5. The metal cover plate of a composite air spring according to claim 1, characterized in that: A connecting ring (19) is fixedly sleeved on the outer wall of the air spring cover plate (2) and is in contact with the top surface of the positioning ring plate (5). A plurality of locking studs (20) are fixed around the top surface of the connecting ring (19). The ends of the locking studs (20) penetrate the positioning ring plate (5) and are threadedly connected to the locking studs (20). The locking studs (20) are in contact with the top surface of the positioning ring plate (5).

6. The metal cover plate of a composite air spring according to claim 2, characterized in that: A paddle (15) is fixed on the outer wall of the movable ring (11).

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