CN214499870U

CN214499870U - Nitrogen spring

Info

Publication number: CN214499870U
Application number: CN202023185662.0U
Authority: CN
Inventors: 陈宝庆
Original assignee: Changzhou Tengkai Precision Machinery Co ltd
Current assignee: Changzhou Tengkai Precision Machinery Co ltd
Priority date: 2020-12-26
Filing date: 2020-12-26
Publication date: 2021-10-26
Anticipated expiration: 2030-12-26

Abstract

The utility model relates to a nitrogen gas spring, it includes barrel and slidable mounting piston rod in the barrel, the bobbin base department of barrel is provided with inlet port and connecting hole, the connecting hole is coaxial setting with the inlet port, fixed mounting has the pneumatic valve in the connecting hole, the pneumatic valve includes the air valve rod of suit in the connecting hole, the spring of suit in air valve rod upper end, the sealing washer of suit in air valve rod lower extreme, and fixed mounting is in the fixed cover of connecting hole aperture department, integrated into one piece has location portion on the air valve rod, the lower extreme of spring supports and leans on in the upper end of location portion, the upper end supports and leans on in fixed cover, the upper end of sealing washer supports and leans on in the lower extreme of location portion, be provided with the taper hole between inlet port and the connecting hole, the lower extreme of sealing washer supports and leans on in the taper hole. The utility model discloses set up the sealing washer on the air valve pole to extrusion to taper hole department under the effect of spring makes sealing washer and taper hole pore wall closely laminate, and the sealing washer is gathered together to the middle part simultaneously, improves the gas tightness of pneumatic valve.

Description

Nitrogen spring

Technical Field

The utility model relates to a nitrogen spring.

Background

The nitrogen spring is a novel elastic component using high-pressure nitrogen as a working medium, has small volume, large elasticity, long stroke, stable work, precise manufacture, long service life (one million times), gentle elasticity curve, no need of pre-tightening and other effects, can finish the work which is difficult to finish by conventional elastic components such as metal springs, rubber and air cushions, can conveniently realize constant pressure and delayed action in a system, is a new generation of ideal elastic component with flexible performance, and is widely applied to the fields of metal stamping, forming, automobile manufacture, injection molds, mechanical equipment and the like. The existing nitrogen gas spring has poor air tightness due to imperfect air tightness at an air inlet.

SUMMERY OF THE UTILITY MODEL

The utility model provides a simple structure, the installation of being convenient for and gas tightness show the nitrogen gas spring that improves.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: this nitrogen gas spring includes barrel and slidable mounting's piston rod in the barrel, the bobbin base department of barrel is provided with inlet port and connecting hole, the connecting hole is coaxial setting with the inlet port, fixed mounting has the pneumatic valve in the connecting hole, the pneumatic valve includes the air valve rod of suit in the connecting hole, the suit is in the spring of air valve rod upper end, the suit is in the sealing washer of air valve rod lower extreme, and fixed cover of fixed mounting in connecting hole orifice department, integrated into one piece has location portion on the air valve rod, the lower extreme of spring is supported and is leaned on the upper end in location portion, the upper end is supported and is leaned on in fixed cover, the upper end of sealing washer is supported and is leaned on the lower extreme in location portion, be provided with the taper hole between inlet port and the connecting hole, the lower extreme of sealing washer is supported and is leaned on in the taper hole.

Wherein, the fixed sleeve is in threaded connection with the orifice of the connecting hole.

Wherein, the upper end of the fixed sleeve is integrally formed with a head, and the head is provided with a flat position.

The cylinder body comprises a cylinder part and a bottom fixedly installed at the lower end of the cylinder part, and the air inlet and the connecting hole are formed in the middle of the bottom.

Wherein the barrel portion is welded to the bottom portion.

Wherein, the edge of bottom is upwards protruding to have the location flange, has seted up first locating hole on the location flange, and the lower extreme of section of thick bamboo portion is protruding downwards to have with first locating hole matched with location axle.

Wherein, the bottom upwards protrudes and is provided with a positioning ring which is sleeved in the barrel part.

Wherein, integrated into one piece has the location arch on the inner wall of section of thick bamboo portion, and the upper end of holding ring is supported and is leaned on in the location arch.

Wherein, the lower extreme of bottom has evenly seted up a plurality of fixed orifices.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses set up the sealing washer on the air valve pole to extrusion to taper hole department under the effect of spring makes sealing washer and taper hole pore wall closely laminate, and the sealing washer is gathered together to the middle part simultaneously, improves the gas tightness of pneumatic valve.

Drawings

Fig. 1 is a schematic cross-sectional view of a nitrogen spring according to a first embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a nitrogen spring according to a second embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments. In the following description, any concept relating to the directionality or orientation of up, down, left, right, front and rear is given with respect to the position shown in the figures being described, and thus should not be construed as particularly limiting the technical solution provided by the present invention.

As shown in fig. 1, the utility model discloses nitrogen spring includes barrel and slidable mounting piston rod in the barrel, and the barrel includes barrel portion 1 and welds in bottom 2 of barrel portion 1 lower extreme, and the upper end of this bottom 2 upwards the arch has spliced pole 21, and this spliced pole 21 coaxial sets up in 2 upper ends in bottom, and connecting hole 22 has been seted up to its middle part coaxial, and inlet port 23 has been seted up to the lower extreme of bottom 2, and this inlet port 23 is coaxial setting with connecting hole 22 to be linked together with this connecting hole 22, install the pneumatic valve in the connecting hole 22.

The air valve comprises an air valve rod 31 sleeved in the connecting hole 22, a spring 32 sleeved at the upper end of the air valve rod 31, a fixed sleeve 33 fixedly installed at the hole opening of the connecting hole 22 and a sealing ring 34 sleeved at the lower end of the air valve rod 31, wherein a positioning part 311 is integrally formed on the air valve rod 31, the lower end of the spring 32 is abutted against the upper end of the positioning part 311, the upper end of the spring is abutted against the fixed sleeve 33, the upper end of the sealing ring 34 is abutted against the lower end of the positioning part 311, and the fixed sleeve 33 is provided with a through hole 331 for communicating the connecting hole 22 with the inner cavity of the cylinder body, so that nitrogen gas can enter the cylinder body; connecting hole 22 is provided with big-end-up's taper hole 28 with inlet port 23 junction, taper hole 28 mirror surface is polished, the lower extreme of sealing washer 34 supports and leans on in the taper hole, in order to seal the inlet port, in operation, nitrogen gas gets into the inlet port, reach certain pressure after, spring pressure is overcome to nitrogen gas, jack-up air valve rod, in order to communicate inlet port and connecting hole, when nitrogen gas does not fill in, atmospheric pressure reduces, the sealing washer extrudees to taper hole department under the effect of spring, make sealing washer and taper hole pore wall closely laminate, the sealing washer gathers together to the middle part simultaneously, improve the gas tightness of pneumatic valve.

The fixing sleeve 33 is installed at the hole of the connecting hole by screw thread, the upper end of the fixing sleeve is provided with a head part, and the head part is provided with a flat position which is convenient for rotating operation and can also adjust the elasticity of the spring.

2 fixing holes 24 are uniformly formed in the lower end of the bottom 2 and symmetrically arranged on two sides of the air inlet hole, so that the barrel can be fixedly mounted conveniently.

A positioning flange 25 is protruded upwards from the edge of the bottom 2, a first positioning hole 26 is formed in the positioning flange 25, a positioning shaft 11 is protruded downwards from the lower end of the cylinder part 1, and the positioning shaft is matched with the first positioning hole so as to be convenient for the cylinder part to be positioned and welded on the bottom; the upper end of the positioning flange and the lower end of the cylinder part are both provided with a welding seam angle, so that the cylinder part and the bottom are conveniently welded.

Of course, a positioning ring 27 may be protruded upward from the upper end of the bottom 2, the positioning ring 27 is sleeved in the barrel 1, the positioning protrusion 12 is integrally formed on the inner wall of the barrel 1, and the upper end of the positioning flange 25 abuts against the positioning protrusion 12, as shown in fig. 2, to further facilitate positioning and installation of the barrel.

Finally, it should be noted that: the above embodiments are merely illustrative of the technical solutions of the present invention, and not limitative thereof; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A nitrogen spring, characterized by: the nitrogen spring comprises a cylinder body and a piston rod arranged in the cylinder body in a sliding manner, an air inlet hole (23) and a connecting hole (22) are formed in the bottom of the cylinder body, the connecting hole (22) and the air inlet hole (23) are coaxially arranged, an air valve is fixedly arranged in the connecting hole (22), the air valve comprises an air valve rod (31) sleeved in the connecting hole (22), a spring (32) sleeved at the upper end of the air valve rod (31), a sealing ring (34) sleeved at the lower end of the air valve rod (31) and a fixing sleeve (33) fixedly arranged at the hole opening of the connecting hole (22), a positioning part (311) is integrally formed on the air valve rod (31), the lower end of the spring (32) is abutted against the upper end of the positioning part (311), the upper end of the spring is abutted against the fixing sleeve (33), the upper end of the sealing ring (34) is abutted against the lower end of the positioning part (311), a taper hole (28) is arranged between the air inlet hole (23) and the connecting hole (22), and the lower end of the sealing ring (34) is abutted against the taper hole (28).

2. A nitrogen spring according to claim 1, wherein said fixing sleeve (33) is screwed at the orifice of said connecting hole (22).

3. The nitrogen spring as claimed in claim 2, wherein the fixing sleeve (33) is integrally formed with a head at an upper end thereof, and the head is provided with a flat portion.

4. The nitrogen spring as recited in claim 1, wherein the cylinder comprises a cylinder (1) and a bottom (2) fixedly mounted at the lower end of the cylinder (1), and the air inlet (23) and the connection hole (22) are both opened at the middle of the bottom (2).

5. A nitrogen spring according to claim 4, wherein said cylindrical portion (1) is welded to said bottom portion (2).

6. The nitrogen spring as claimed in claim 4, wherein a positioning flange (25) protrudes upwards from the edge of the bottom (2), a first positioning hole (26) is formed in the positioning flange (25), and a positioning shaft (11) which is matched with the first positioning hole (26) protrudes downwards from the lower end of the barrel (1).

7. A nitrogen spring according to claim 4, wherein a positioning ring (27) is projected upwards from the bottom (2), and the positioning ring (27) is sleeved in the barrel portion (1).

8. A nitrogen spring according to claim 7, wherein a positioning protrusion (13) is integrally formed on the inner wall of said cylindrical portion (1), and the upper end of said positioning ring (27) abuts against said positioning protrusion (13).

9. A nitrogen spring according to claim 4, wherein the lower end of the bottom part (2) is uniformly provided with a plurality of fixing holes (24).