CN103452944A - Vehicle-carried single-acting cylinder - Google Patents

Abstract

The invention relates to the technical field of cylinders, in particular to a vehicle-mounted single-acting cylinder, which includes a cylinder body, one end of the cylinder body is sealed with a mounting seat, the other end of the cylinder body is provided with an end cover, and the inner cavity of the cylinder body can be A piston is slidingly arranged, a spring support sleeve is provided inside the end cover, a return spring is provided between the piston and the spring support sleeve, a piston rod is inserted in the middle of the end cover and the spring support sleeve, and one end of the piston rod extends into the The inner cavity of the cylinder is fixedly connected with the piston, the mounting seat is provided with an air inlet, and the outside of the piston is provided with an accommodating chamber corresponding to the air inlet, and the accommodating chamber is provided with a low pressure Exhaust valve, the piston rod is connected to the piston and one end is provided with an exhaust hole, one end of the exhaust hole communicates with the containing chamber, the other end of the exhaust hole communicates with the inner cavity of the cylinder, and the spring support sleeve and the piston rod are arranged There is an exhaust dustproof device. The invention has reasonable structural arrangement, and has the characteristics of energy saving, dustproof and long service life.

Description

A vehicle-mounted single-acting cylinder

technical field

The invention relates to the technical field of cylinders, in particular to a vehicle-mounted single-acting cylinder.

Background technique

With the improvement of people's living standards, cars have become one of the necessary tools for people to travel. Vehicle-mounted cylinders are one of the indispensable parts in automobiles. The cylinders currently used in the automotive field are severely restricted in terms of space, energy, and working environment due to unreasonable structural settings and other reasons. If the existing vehicle-mounted cylinder is a double-action cylinder with air intake at both ends, there are the following defects and deficiencies in this arrangement: 1. It is not conducive to energy saving, and the production cost is high; 2. The air intake and exhaust at both ends have poor dustproof effect. 3. The double-acting cylinder generally has a long stroke, which is difficult to adapt to the occasion with a short stroke, which limits the application field and scope of the product.

Contents of the invention

The purpose of the present invention is to provide a vehicle-mounted single-acting cylinder with reasonable structure, short stroke, energy saving and good dustproof effect in view of the defects and deficiencies of the prior art.

To achieve the above object, the present invention adopts the following technical solutions:

A vehicle-mounted single-acting cylinder according to the present invention includes a cylinder body, one end of the cylinder body is sealed with a mounting seat, the other end of the cylinder body is provided with an end cover, and a piston is slidably arranged in the inner cavity of the cylinder body , the inner side of the end cover is provided with a spring support sleeve, a return spring is provided between the piston and the spring support sleeve, a piston rod is inserted in the middle of the end cover and the spring support sleeve, and one end of the piston rod extends into the inner cavity of the cylinder Inside, it is fixedly connected with the piston, the mounting seat is provided with an air inlet, and the outside of the piston is provided with an accommodation cavity, and the accommodation chamber is set correspondingly to the air inlet, and a low-pressure exhaust valve is arranged in the accommodation chamber, One end of the piston rod connected to the piston is provided with an exhaust hole, one end of the exhaust hole communicates with the containing cavity, the other end of the exhaust hole communicates with the inner cavity of the cylinder, and an exhaust anti-ventilator is arranged between the spring support sleeve and the piston rod. dust device.

Wherein, the low-pressure exhaust valve includes a nozzle fixed at the end of the piston rod, and a spool movably arranged in the accommodating cavity. The head of the spool is provided with a sealing ring B, and the sealing ring B corresponds to the nozzle. Set, the valve core and the nozzle are provided with compression springs.

Further, a dust-proof and sound-absorbing sheet is provided on the outside of the valve core.

Wherein, the exhaust and dust-proof device includes a scraper ring arranged between the spring support sleeve and the piston rod, and a one-way dust-proof film arranged outside the dust scraper ring. The spring support sleeve and the dust scraper ring are formed with The exhaust channel, the one-way dust-proof film seals the outlet of the exhaust channel.

Further, the return spring includes a large spring and a small spring, the small spring is sleeved in the large spring, and a spring sheath is provided between the large spring and the small spring.

Further, the mounting base is provided with a mounting hole, a shaft sleeve is pierced in the mounting hole, and a buffer sleeve is provided between the outer wall of the shaft sleeve and the inner wall of the mounting hole.

Further, a cylinder sheath is fixed inside the end cover, and one end of the large spring is sheathed in the cylinder sheath.

Further, a guide belt and a sealing ring A are provided on the outer wall of the piston.

Further, an O-ring is provided between the dust scraping ring and the piston rod.

Further, an aluminum-based Teflon sleeve is provided between the spring support sleeve and the piston rod.

The beneficial effects of the present invention are as follows: compared with the prior art, the mounting seat of the present invention is provided with an air intake hole, and the piston is provided with an accommodation chamber on the outside, the accommodation chamber is set correspondingly to the air intake hole, and the accommodation chamber There is a low-pressure exhaust valve in the cavity, and the piston rod is connected to the piston with an exhaust hole at one end, one end of the exhaust hole communicates with the containing chamber, and the other end of the exhaust hole communicates with the inner cavity of the cylinder, and the spring support sleeve and An exhaust and dust-proof device is arranged between the piston rods. The invention adopts one end for air intake, and the other end for air outlet under low pressure, that is, a single-acting cylinder, which is beneficial to energy saving and has a good dust-proof effect.

Description of drawings

Fig. 1 is a partial sectional structure schematic diagram of the present invention;

Fig. 2 is a schematic diagram of the installation structure of the present invention;

Fig. 3 is a schematic cross-sectional structure diagram of the present invention.

In the picture:

1. Cylinder block; 2. Seal ring A; 3. Guide belt; 4. Piston;

5. Spring sheath; 6. Large spring; 7. Cylinder sheath; 8. End cover;

9. Spring support sleeve; 10. One-way dust-proof film; 11. Scraper ring; 12. Piston rod;

13. O-type sealing ring; 14. Aluminum-based Teflon sleeve; 15. Buffer sleeve; 16. Shaft sleeve;

17. Dust-proof and sound-absorbing sheet; 18. Valve core; 19. Compression spring; 20. Sealing ring B

21. Nozzle; 22. Small spring; 23. Air intake hole; 24. Mounting hole;

25. Mounting seat; 26. Accommodating chamber; 27. Vent hole; 28. Exhaust channel.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figures 1 to 3, a vehicle-mounted single-acting cylinder according to the present invention includes a cylinder body 1, one end of the cylinder body 1 is sealed with a mounting seat 25, and the other end of the cylinder body 1 is provided with an end cover 8. The above components constitute the external structure of the present invention.

A piston 4 is slidably arranged in the inner cavity of the cylinder body 1, and a guide belt 3 and a sealing ring A2 are arranged on the outer wall of the piston 4 to play a guiding and sealing role. The inner side of the end cover 8 is provided with a spring support sleeve 9, and a return spring is provided between the piston 4 and the spring support sleeve 9, which can effectively realize the reset of the piston 4. In the present invention, the preferred return spring includes a large spring 6 and a small spring 22. The small spring 22 is sleeved in the large spring 6, a spring sheath 5 is provided between the large spring 6 and the small spring 22, a cylinder sheath 7 is fixed inside the end cover 8, and the large One end of the spring 6 is sleeved in the cylinder sheath 7, so that the piston 4 can run more smoothly. A piston rod 12 is inserted in the middle of the end cover 8 and the spring support sleeve 9 , and one end of the piston rod 12 extends into the inner cavity of the cylinder body 1 and is fixedly connected with the piston 4 . The above components constitute the internal structure of the present invention.

The mounting base 25 is provided with an air intake hole 23, and the piston 4 is provided with an accommodation chamber 26 on the outside, the accommodation chamber 26 is arranged correspondingly to the air intake opening 23, and a low-pressure exhaust valve is provided in the accommodation chamber 26, One end of the piston rod 12 connected to the piston 4 is provided with an exhaust hole 27, one end of the exhaust hole 27 communicates with the accommodating chamber 26, the other end of the exhaust hole 27 communicates with the inner cavity of the cylinder body 1, and the spring support sleeve 9 is connected with the piston An exhaust dustproof device is arranged between the rods 12 .

Specifically, the low-pressure exhaust valve includes a nozzle 21 fixed at the end of the piston rod 12, and a spool 18 movably set in the accommodating cavity 26. The head of the spool 18 is provided with a sealing ring B20, so The sealing ring B20 is arranged corresponding to the nozzle 21 , and the valve core 18 and the nozzle 21 are provided with a compression spring 19 . In the present invention, the dust-proof and sound-absorbing sheet 17 is preferably provided on the outside of the valve core 18, so as to achieve the effect of dust-proof and sound-absorbing.

The exhaust and dust-proof device includes a scraper ring 11 arranged between the spring support sleeve 9 and the piston rod 12, a one-way dustproof film 10 arranged outside the scraper ring 11, and the spring support sleeve 9 is connected with the scraper ring 11. An exhaust channel 28 is formed on the ring 11 , and the one-way dustproof film 10 seals the outlet of the exhaust channel 28 . An O-ring 13 is provided between the scraping ring 11 and the piston rod 12 . An aluminum-based Teflon sleeve 14 is arranged between the spring support sleeve 9 and the piston rod 12 . The exhaust and dust-proof device mainly plays the role of exhaust and dust-proof.

The mounting base 25 is provided with a mounting hole 24 , the mounting hole 24 is pierced with a shaft sleeve 16 , and a buffer sleeve 15 is provided between the outer wall of the shaft sleeve 16 and the inner wall of the mounting hole 24 . The present invention realizes fixed installation through the cooperation of the installation hole 24 and the shaft sleeve 16 . It should be noted that the mounting seat 25 of the present invention is in a triangular shape, and the mounting hole 24 can be used as a fulcrum to rotate at any angle. At the same time, the piston 4 can perform reciprocating linear motion, which constitutes a common crank-link mechanism in the transmission mechanism, greatly improving The application field and application scope of the present invention are widened.

Working principle: when using the present invention, the working gas enters the present invention from the air inlet 23, when the pressure of the working gas is small, the low-pressure exhaust valve is in the open state, and the working gas passes through the dust-proof and sound-absorbing sheet 17, the valve core 18, and the nozzle 21 from the And the exhaust hole 27 enters the inner chamber of the cylinder block 1, and then is discharged outside the present invention through the exhaust passage 28 and the one-way dustproof film 10. When the pressure of the working gas is high, the working gas squeezes the spool 18 to move to the left, and at the same time overcomes the force of the compression spring until the sealing ring B20 seals the nozzle 21, and the working gas cannot be discharged through the exhaust hole 27. At this time, the working The gas pushes the piston 4 to move to the right, the present invention is in a working state, and the large spring 6 and the small spring 22 are in a compressed state. When the working gas to the present invention is stopped, the piston 4 resets under the action of the large spring 6 and the small spring 22 .

The above is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims (10)

1. a vehicle-mounted single-acting cylinder, comprise cylinder body (1), described cylinder body (1) one end sealing is provided with fitting seat (25), described cylinder body (1) the other end is provided with end cap (8), slidably be provided with piston (4) in described cylinder body (1) inner chamber, described end cap (8) inboard is provided with spring supporting cover (9), be provided with Returnning spring between described piston (4) and spring supporting cover (9), described end cap (8) and spring supporting cover (9) middle part are inserted with piston rod (12), piston rod (12) one ends stretch in cylinder body (1) inner chamber, with piston (4), be fixedly connected with, it is characterized in that: described fitting seat (25) is provided with inlet hole (23), described piston (4) outside is provided with receiving cavity (26), described receiving cavity (26) and the corresponding setting of inlet hole (23), described receiving cavity is provided with the low pressure exhaust valve in (26), described piston rod (12) is connected in piston (4) one ends and is provided with exhaust port (27), exhaust port (27) one ends are communicated with receiving cavity (26), exhaust port (27) the other end is communicated with cylinder body (1) inner chamber, be provided with the exhaust dust guard between described spring supporting cover (9) and piston rod (12).

2. vehicle-mounted single-acting cylinder according to claim 1, it is characterized in that: described low pressure exhaust valve comprises the nozzle (21) that is fixed at piston rod (12) end, the removable spool (18) of being located in receiving cavity (26), described spool (18) head is provided with seal ring B(20), described seal ring B(20), with the corresponding setting of nozzle (21), described spool (18) is provided with Compress Spring (19) with nozzle (21).

3. vehicle-mounted single-acting cylinder according to claim 2, is characterized in that: be provided with dustproof bloop (17) outside described spool (18).

4. according to the arbitrary described vehicle-mounted single-acting cylinder of claim 1-3, it is characterized in that: described exhaust dust guard comprises the dust scraping ring (11) of being located between spring supporting cover (9) and piston rod (12), be located at the unidirectional dustproof film (10) in dust scraping ring (11) outside, form exhaust passage (28) on described spring supporting cover (9) and dust scraping ring (11), described unidirectional dustproof film (10) closes vent passage (28) outlet.

5. vehicle-mounted single-acting cylinder according to claim 4, it is characterized in that: described Returnning spring comprises big spring (6) and little spring (22), described little spring (22) is sheathed in big spring (6), between described big spring (6) and little spring (22), is provided with spring protecting sleeve (5).

6. vehicle-mounted single-acting cylinder according to claim 5, it is characterized in that: described fitting seat (25) is provided with mounting hole (24), be equipped with axle sleeve (16) in described mounting hole (24), between described axle sleeve (16) outer wall and mounting hole (24) inwall, be provided with cushion collar (15).

7. vehicle-mounted single-acting cylinder according to claim 6, it is characterized in that: described end cap (8) inboard is fixed with cylinder sheath (7), and described big spring (6) one ends are sheathed in cylinder sheath (7).

8. vehicle-mounted single-acting cylinder according to claim 6, it is characterized in that: described piston (4) outer wall is provided with guidance tape (3) and seal ring A(2).

9. vehicle-mounted single-acting cylinder according to claim 6, is characterized in that: between described dust scraping ring (11) and piston rod (12), be provided with O RunddichtringO (13).

10. vehicle-mounted single-acting cylinder according to claim 6, is characterized in that: between described spring supporting cover (9) and piston rod (12), be provided with the aluminium base thing fluorine actor playing a supporting role (14).

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