Air spring piston structure

Abstract

The invention discloses an air spring piston structure, and relates to the technical field of air spring pistons, the air spring piston structure comprises an air spring piston main body and two locking studs, the air spring piston structure further comprises an adjusting mechanism, the adjusting mechanism comprises a mounting seat, two driving screws, a driving nut seat and a transmission part, the thread directions of the two driving screws are opposite, and the driving nut seat is arranged on the mounting seat. A fixing block is fixed to the bottom of the driving nut seat, a sliding seam matched with the fixing block is formed in the bottom face of the mounting seat, and the tail end of the fixing block penetrates through the sliding seam in a sliding mode and is detachably connected with the locking stud. Through the arrangement of the adjusting mechanism, the transmission part acts on the two driving screw rods to synchronously rotate, so that the driving nut seats on the rod bodies of the two driving screw rods synchronously and reversely slide under a thread structure, and the distance between the two locking studs can be conveniently and rapidly adjusted manually according to the distance between the through holes in the air spring bracket; the practicability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of air spring pistons, and in particular to an air spring piston structure. Background Art

[0002] Since the 1980s, the world's major developed countries have begun to popularize air suspension in order to reduce the damage of vehicles to roads and increase the smoothness, comfort, handling stability and safety of vehicles. The air spring is the core component of the air suspension. It uses the reaction force of the compressed air inside the rubber airbag as an elastic element of elastic restoring force. It has excellent working characteristics such as variable stiffness, adjustable height and long life. There are generally two ways to connect the rubber bladder and the piston: bolt fastening connection and self-sealing;

[0003] In order to facilitate the installation of the air spring, the conventional air spring piston is equipped with a plurality of studs on the top, and then the studs are used to penetrate the reserved holes on the air spring support beam, and then nuts are screwed into the studs to make the nuts and the air spring support beam tightly pressed, so as to achieve a fixed connection between the air spring piston and the air spring support beam;

[0004] However, the holes on the air spring bracket are mostly pre-opened manually, and manual work will inevitably have deviations, resulting in the spacing between the holes being too large or too small. However, the studs on the piston are mostly welded and fixed in position. Once there is a deviation in the spacing between the holes on the air spring bracket, it will often affect the normal insertion of the studs into the holes and affect the installation of the air spring piston. Summary of the invention

[0005] In order to solve the above technical problems, an air spring piston structure is provided, which solves the problem that in the prior art, the studs on the piston are mostly welded and fixed in position. Once there is a deviation in the spacing between the through holes on the air spring bracket, it will often affect the normal insertion of the studs into the through holes and affect the installation of the air spring piston.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: an air spring piston structure, comprising an air spring piston body and two locking studs symmetrically arranged below the air spring piston body, and also comprising an adjustment mechanism arranged on the bottom surface of the air spring piston body;

[0007] The adjustment mechanism includes a mounting seat with an open top fixed to the bottom surface of the air spring piston body, two driving screws rotatably connected to the inner walls on both sides of the mounting seat, a driving nut seat threadedly connected to the rod body of the driving screw, and a transmission component arranged between the two driving screws, the thread directions of the two driving screws are opposite, a fixing block is fixed to the bottom of the driving nut seat, a sliding slot matched with the fixing block is opened on the bottom surface of the mounting seat, and the end of the fixing block slides through the sliding slot and is detachably connected to the locking stud.

[0008] Preferably, a fixing ring plate in the shape of a ring and fixedly connected to the bottom surface of the air spring piston body is provided on the outer side of the mounting seat, an insert block is fixed to the top end of the locking stud, a socket matched with the insert block is opened at the bottom end of the fixing block, a locking rod is provided between the fixing block and the fixing ring plate, and one end of the locking rod passes through the fixing block and the insert block.

[0009] Preferably, the transmission component includes a control column rotatably arranged in the inner wall of the bottom end of the mounting base and a transmission column vertically fixed on the top surface of the control column, a first bevel gear is fastened and sleeved on the rod body of the transmission column, and a second bevel gear meshing with the first bevel gear is fastened and sleeved on the end of the driving screw.

[0010] Preferably, an annular air injection channel is provided in the inner wall of the outer periphery of the fixed ring plate, and a pressurizing channel corresponding to the locking rod and connected to the annular air injection channel is opened on the inner wall of the fixed ring plate, a sliding plate fixedly connected to the other end of the locking rod is slidably provided on one side of the inside of the pressurizing channel, a positioning block is fixed on the other side of the inside of the pressurizing channel, a return spring is fixed between the sliding plate and the positioning block, and a vent hole is opened in the inner wall of the positioning block.

[0011] Preferably, a gas filling nozzle connected to the interior of the annular gas injection channel is fixedly provided on the outer wall of the fixed ring plate, and the gas filling nozzle has a valve core built in it.

[0012] Preferably, a plum blossom groove is provided on the bottom surface of the control column.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) By setting the adjustment mechanism, the transmission components are used to cause the two drive screws to rotate synchronously, so that the drive nut seats on the rod bodies of the two drive screws slide synchronously in opposite directions under the threaded structure, thereby facilitating manual adjustment of the spacing between the two locking studs according to the spacing between the perforations on the air spring bracket, thereby improving practicality.

[0015] (2) By setting the plug block and the locking rod, the locking rod is pulled out from the fixing block and the inner wall of the plug block, that is, the fixed connection between the locking stud and the fixing block is disconnected, thereby facilitating manual replacement of the locking stud of the corresponding model according to the hole diameter of the hole on the air spring bracket;

[0016] (3) By setting the slide and the return spring, the pressure inside the pressurized channel is regulated by adding and releasing air inside the annular air injection channel. When the pressure inside the pressurized channel increases, the slide is pressed away from the positioning block and stretches the return spring, causing the locking rod to slide out of the pressurized channel until it penetrates the fixed block and the plug block, thereby quickly achieving a fixed connection between the two locking studs and the corresponding fixed blocks. Conversely, when the pressure inside the pressurized channel decreases, the slide quickly carries the locking rod back to its original position under the elastic force of the return spring, causing the locking rod to withdraw from the inner wall of the fixed block and the plug block, thereby quickly releasing the fixed connection between the two locking studs and the corresponding fixed blocks, thereby easily achieving disassembly and assembly of the two locking studs and improving work efficiency. 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 bottom structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the partial internal structure of the present invention;

[0020] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at A in the middle;

[0021] Figure 5 For the present invention Figure 3 Schematic diagram of the structure at point B in the middle.

[0022] The numbers in the figure are:

[0023] 1. Air spring piston body; 2. Locking stud; 3. Mounting seat; 4. Drive screw; 5. Drive nut seat; 6. Fixed block; 7. Sliding slot; 8. Transmission column; 9. First bevel gear; 10. Second bevel gear; 11. Control column; 12. Fixed ring plate; 13. Pressurization channel; 14. Locking rod; 15. Sliding plate; 16. Positioning block; 17. Reset spring; 18. Annular air injection channel; 19. Air nozzle; 20. Insert block. DETAILED DESCRIPTION

[0024] 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.

[0025] Reference Figure 1-5As shown, an air spring piston structure includes an air spring piston body 1 and two locking studs 2 symmetrically arranged below the air spring piston body 1;

[0026] When in use, the locking stud 2 is used to penetrate the reserved through-hole on the air spring support beam, and then a nut is screwed into the locking stud 2 so that the nut is pressed against the air spring support beam, thereby achieving a fixed connection between the air spring piston body 1 and the air spring support beam.

[0027] However, in practice, the perforations on the air spring bracket are mostly pre-opened manually, and manual work will inevitably have deviations, resulting in the spacing between the perforations being too large or too small. However, the locking stud 2 is mostly welded to the air spring piston body 1 and the position is fixed. Once the spacing between the perforations on the air spring bracket deviates, it will often affect the normal insertion of the locking stud 2 into the perforations, affecting the installation of the air spring piston.

[0028] To this end, referring to Figures 2-4, it is worth noting that it also includes an adjustment mechanism disposed on the bottom surface of the air spring piston body 1;

[0029] The adjustment mechanism includes a mounting seat 3 with an open top fixed on the bottom surface of the air spring piston body 1, two driving screws 4 rotatably connected to the inner walls on both sides of the mounting seat 3, a driving nut seat 5 threadedly connected to the rod body of the driving screw 4, and a transmission component arranged between the two driving screws 4, the threads of the two driving screws 4 are in opposite directions, a fixing block 6 is fixed to the bottom of the driving nut seat 5, a sliding slit 7 adapted to the fixing block 6 is opened on the bottom surface of the mounting seat 3, and the end of the fixing block 6 slides through the sliding slit 7 and is detachably connected to the locking stud 2;

[0030] By setting the adjustment mechanism, the transmission components are utilized to cause the two driving screws 4 to rotate synchronously, so that the driving nut seats 5 on the rod bodies of the two driving screws 4 slide synchronously in opposite directions under the threaded structure, thereby driving the nut seats 5 to carry the corresponding fixed blocks 6 to slide inside the sliding slot 7, thereby facilitating manual adjustment of the spacing between the two locking studs 2 according to the spacing between the perforations on the air spring bracket, thereby improving practicality.

[0031] Further, refer to Figure 4 As shown, it is worth noting that the transmission component includes a control column 11 rotatably arranged in the inner wall of the bottom end of the mounting seat 3 and a transmission column 8 vertically fixed on the top surface of the control column 11, a first bevel gear 9 is fastened and sleeved on the rod body of the transmission column 8, and a second bevel gear 10 meshing with the first bevel gear 9 is fastened and sleeved on the end of the driving screw 4;

[0032] By operating the operating column 11 to rotate, the transmission column 8 can carry the first bevel gear 9 to synchronously mesh with the second bevel gears 10 at the ends of the two driving screw rods 4, thereby synchronously providing rotational force for the two driving screw rods 4.

[0033] Further, refer to Figure 2 As shown, it is worth noting that a plum blossom groove is provided on the bottom surface of the control column 11;

[0034] Through the setting of the plum blossom groove, it is convenient to manually use the plum blossom to twist the control column 11 to provide a rotational force for the transmission column 8.

[0035] Further, refer to Figure 2-4 As shown, it is worth noting that a fixing ring plate 12 in an annular shape and fixedly connected to the bottom surface of the air spring piston body 1 is provided on the outer side of the mounting seat 3, an insert block 20 is fixed to the top of the locking stud 2, a socket adapted to the insert block 20 is provided at the bottom end of the fixing block 6, a locking rod 14 is provided between the fixing block 6 and the fixing ring plate 12, and one end of the locking rod 14 passes through the fixing block 6 and the insert block 20;

[0036] Through the setting of the plug block 20 and the locking rod 14, the locking rod 14 is pulled out from the inner wall of the fixing block 6 and the plug block 20, that is, the fixed connection between the locking stud 2 and the fixing block 6 is disconnected, thereby facilitating manual replacement of the locking stud 2 of the corresponding model according to the aperture of the hole on the air spring bracket.

[0037] Further, refer to Figure 2-5 As shown, it is worth noting that an annular gas injection channel 18 is provided in the inner wall of the outer periphery of the fixed ring plate 12, and a pressurizing channel 13 corresponding to the locking rod 14 and connected to the annular gas injection channel 18 is provided on the inner wall of the fixed ring plate 12, and a slide 15 fixedly connected to the other end of the locking rod 14 is slidably provided on one side of the pressurizing channel 13, and a positioning block 16 is fixed on the other side of the pressurizing channel 13, and a return spring 17 is fixed between the slide 15 and the positioning block 16, and a vent hole is provided in the inner wall of the positioning block 16;

[0038] By setting the slide 15 and the return spring 17, the pressure inside the pressurized channel 13 is regulated by adding and releasing air inside the annular air injection channel 18. When the pressure inside the pressurized channel 13 increases, the slide 15 is pressed away from the positioning block 16 and stretches the return spring 17, causing the locking rod 14 to slide out of the pressurized channel 13 until it penetrates the fixed block 6 and the plug block 20, thereby quickly realizing the fixed connection between the two locking studs 2 and the corresponding fixed blocks 6. Conversely, when the pressure inside the pressurized channel 13 decreases, the slide 15 quickly carries the locking rod 14 to reset under the elastic force of the return spring 17, so that the locking rod 14 withdraws from the inner wall of the fixed block 6 and the plug block 20, thereby quickly releasing the fixed connection relationship between the two locking studs 2 and the corresponding fixed block 6, thereby easily realizing the disassembly and assembly of the two locking studs 2 and improving work efficiency.

[0039] Further, refer to Figure 5 As shown, it is worth noting that a gas filling nozzle 19 connected to the inside of the annular gas injection channel 18 is fixedly penetrated on the outer wall of the fixed ring plate 12, and the gas filling nozzle 19 has a valve core built therein;

[0040] The gas filling nozzle 19 is connected to an external micro air pump by using a hose, and then the micro air pump is turned on to conveniently inject gas into the gas filling nozzle 19 and the annular gas injection channel 18, thereby increasing the internal pressure of the annular gas injection channel 18 and the pressurizing channel 13;

[0041] At the same time, the valve core is used to make the gas flow unidirectionally inside the gas filling nozzle 19 to prevent the gas added inside the annular gas injection channel 18 from leaking out when the gas filling nozzle 19 is separated from the hose. Subsequently, the valve core can be squeezed by a pin to deflate the inside of the annular gas injection channel 18 and reduce the internal air pressure of the annular gas injection channel 18.

[0042] 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. An air spring piston structure, comprising an air spring piston body (1) and two locking studs (2) symmetrically arranged below the air spring piston body (1), characterized in that: It also includes an adjustment mechanism arranged on the bottom surface of the air spring piston body (1); The adjustment mechanism comprises a mounting seat (3) with an open top fixed on the bottom surface of the air spring piston body (1), two driving screws (4) rotatably connected to the inner walls on both sides of the mounting seat (3), a driving nut seat (5) threadedly connected to the rod body of the driving screw (4), and a transmission component arranged between the two driving screws (4), the threads of the two driving screws (4) are in opposite directions, a fixing block (6) is fixed at the bottom of the driving nut seat (5), a sliding groove (7) adapted to the fixing block (6) is opened on the bottom surface of the mounting seat (3), and the end of the fixing block (6) slides through the sliding groove (7) and is detachably connected to the locking stud (2).

2. The air spring piston structure according to claim 1, characterized in that: A ring-shaped fixing ring plate (12) is arranged on the outer side of the mounting seat (3) and is fixedly connected to the bottom surface of the air spring piston body (1); an insert block (20) is fixed to the top end of the locking stud (2); a socket matched with the insert block (20) is opened at the bottom end of the fixing block (6); a locking rod (14) is arranged between the fixing block (6) and the fixing ring plate (12); one end of the locking rod (14) passes through the fixing block (6) and the insert block (20).

3. The air spring piston structure according to claim 1, characterized in that: The transmission component comprises a control column (11) rotatably arranged in the inner wall of the bottom end of the mounting seat (3) and a transmission column (8) vertically fixed on the top surface of the control column (11); a first bevel gear (9) is tightly sleeved on the rod body of the transmission column (8); and a second bevel gear (10) meshing with the first bevel gear (9) is tightly sleeved on the end of the driving screw rod (4).

4. The air spring piston structure according to claim 2, characterized in that: An annular gas injection channel (18) is arranged in the inner wall of the outer periphery of the fixed ring plate (12); a pressurizing channel (13) corresponding to the locking rod (14) and connected to the annular gas injection channel (18) is opened on the inner wall of the fixed ring plate (12); a sliding plate (15) fixedly connected to the other end of the locking rod (14) is slidably arranged on one side inside the pressurizing channel (13); a positioning block (16) is fixed on the other side inside the pressurizing channel (13); a return spring (17) is fixed between the sliding plate (15) and the positioning block (16); and a vent hole is opened in the inner wall of the positioning block (16).

5. The air spring piston structure according to claim 4, characterized in that: A gas filling nozzle (19) which is in communication with the interior of the annular gas injection channel (18) is fixedly provided on the outer wall of the fixed ring plate (12), and a valve core is built into the gas filling nozzle (19).

6. The air spring piston structure according to claim 3, characterized in that: The bottom surface of the control column (11) is provided with a plum blossom groove.

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