CN208519098U - A kind of nitrogen gas spring of anti-gas-leak - Google Patents

Abstract

The utility model belongs to nitrogen gas spring equipment technical field, more particularly to a kind of nitrogen gas spring of anti-gas-leak, including piston mechanism (1) and it is set to the pressure relief (2) of the piston mechanism (1), the piston mechanism (1) includes piston rod (11) and the guide sleeve (12) with the cooperation of the piston rod (11), and the pressure relief (2) is used to discharge the pressure generated when the piston rod (11) and the guide sleeve (12) cooperate.The partial high pressure that the mechanism cooperatively forms piston rod with guide sleeve when moving back and forth is released, and avoids gas leakage caused by nitrogen is extruded by high pressure, to extend the service life of nitrogen gas spring.

Description

A kind of nitrogen gas spring of anti-gas-leak

Technical field

The utility model belongs to nitrogen gas spring equipment technical field, and in particular to a kind of nitrogen gas spring of anti-gas-leak.

Background technique

Nitrogen gas spring (or nitrogen cylinder or nitrogen cylinder) is a kind of using high pressure nitrogen as the novel elastic component of working media, it With small in size, elastic force is big, stroke is long, stable working, manufacture are accurate, long service life (general flexible up to 1,000,000 times), Spring curve is gentle and does not need the advantages that pre-tightening, and is applied on mold (especially Press Tools for Automobiles), can complete gold Belong to the common elastics components such as spring, rubber and air cushion and be difficult to the work completed, can effectively simplify designing and manufacturing for mold, side Just the installation and adjustment of mold, extend the service life of mold, and ensure the stabilization of product quality.

Existing nitrogen gas spring generally comprises cylinder barrel and piston mechanism, and wherein piston mechanism includes piston boit and and piston The guide sleeve of column cooperation, cylinder barrel define open-topped cavity, and the opening of cylinder barrel inserts the guide sleeve, piston boit activity It is plugged in guide sleeve, cavity, guide sleeve and the piston boit of cylinder barrel surround a closed air cavity, be filled with elevated pressure nitrogen in air cavity Gas, piston boit toward mobile (downlink in other words) predetermined displacement of air cavity internal contraction and compress high pressure under by the promotion of outer template Nitrogen, to provide several hundred or even several very heavy buffer springs to template.At work, under high pressure nitrogen atmosphere, piston boit will During guide sleeve pushes up, a part of nitrogen is often passed through into the gap between piston boit and guide sleeve because of high pressure Extruding is gone out, therefore being working for a long time nitrogen gas spring will fail, therefore the service life of nitrogen gas spring can shorten.

In addition, the piston post design due to existing nitrogen gas spring is unreasonable, so that nitrogen gas spring is at work, piston boit band The high pressure nitrogen of Contact can not discharge when action-oriented set moves upwards, and lead to smooth base, so as to shorten nitrogen gas spring Service life, be unfavorable for the long term growth of enterprise, the relevant technologies urgently optimize.

Utility model content

The purpose of this utility model is that: in view of the deficiencies of the prior art, and a kind of nitrogen gas spring of anti-gas-leak is provided, made It obtains the partial high pressure that piston rod is cooperatively formed when moving back and forth with guide sleeve to be released, avoids nitrogen and extruded by high pressure Caused by gas leakage, to extend the service life of nitrogen gas spring.

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

A kind of nitrogen gas spring of anti-gas-leak including piston mechanism and is set to the pressure relief of the piston mechanism, institute Stating piston mechanism includes piston rod and the guide sleeve with the cooperation of the piston rod, and the pressure relief makes the piston rod The partial high pressure generated when cooperating with the guide sleeve is released.Pressure relief is set to piston rod and/or guide sleeve, according to Specific works need can be with flexible setting, the confined space and nitrogen that are formed when pressure relief makes piston rod work with guide sleeve The connection of spring inner cavity, avoids the generation of partial high pressure, so as to avoid the leakage of nitrogen, extends making for nitrogen gas spring Use the service life.

A kind of improvement of nitrogen gas spring as anti-gas-leak described in the utility model, the pressure relief are set to described Piston rod.Pressure relief can be set at the edge and/or middle part of piston rod bottom, as the case may be can be with flexible setting.

A kind of improvement of nitrogen gas spring as anti-gas-leak described in the utility model, the pressure relief are set to described Guide sleeve.Pressure relief can be set on guide sleeve, and structure can be varied, but the effect played is the same.

A kind of improvement of nitrogen gas spring as anti-gas-leak described in the utility model, the pressure relief are set to simultaneously The piston rod and the guide sleeve.The pressure relief can be arranged on piston rod and guide sleeve simultaneously, strengthen pressure release Effect.

A kind of improvement of nitrogen gas spring as anti-gas-leak described in the utility model, the number of the pressure relief is at least It is 1.According to the needs of real work, the quantity of pressure relief can be with flexible setting, so that pressure release effect reaches best.

A kind of improvement of nitrogen gas spring as anti-gas-leak described in the utility model, the cross section of the pressure relief Shape is semicircle, round, arc or polygon.The cross-sectional area of pressure relief can be it is varied, according to working environment Flexible setting.

A kind of improvement of nitrogen gas spring as anti-gas-leak described in the utility model, the cross section of the pressure relief Shape is at least one of semicircle, round, arc and polygon.This design is conducive to mass production, so that pressure release Effect is reinforced.

A kind of improvement of nitrogen gas spring as anti-gas-leak described in the utility model further includes the first sealing ring, second Sealing ring and cylinder body, the piston rod are cooperated by first sealing ring and the guide sleeve, and the guide sleeve passes through described Second sealing ring and the cylinder body cooperate.This structure designs so that cylinder body, the first sealing ring, the second sealing ring, motion bar and Guide sleeve together constitutes a closed cavity, so that nitrogen gas spring works normally.

Detailed description of the invention

Attached drawing described herein is used to provide a further understanding of the present invention, and constitutes one of the utility model Point, the exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the utility model Improper restriction.In the accompanying drawings:

Fig. 1 is the structural schematic diagram of embodiment 1 in the utility model；

Fig. 2 is the structural schematic diagram of embodiment 2 in the utility model；

Fig. 3 is the structural schematic diagram of embodiment 3 in the utility model；

Fig. 4 is one of the structural schematic diagram of the area the A side view in the embodiments of the present invention 1 and embodiment 3；

Fig. 5 is the second structural representation of the area the A side view in the embodiments of the present invention 1 and embodiment 3；

Fig. 6 is the third structural representation of the area the A side view in the embodiments of the present invention 1 and embodiment 3；

Fig. 7 is the four of the structural schematic diagram of the area the A side view in the embodiments of the present invention 1 and embodiment 3；

Fig. 8 is the five of the structural schematic diagram of the area the A side view in the embodiments of the present invention 1 and embodiment 3；

Fig. 9 is the six of the structural schematic diagram of the area the A side view in the embodiments of the present invention 1 and embodiment 3；

Wherein: 1- piston mechanism；11- piston rod；12- guide sleeve；2- pressure relief；The first sealing ring of 3-；4- second is close Seal；5- cylinder body.

Specific embodiment

As used some vocabulary to censure specific components in the specification and claims.Those skilled in the art answer It is understood that hardware manufacturer may call the same component with different nouns.This specification and claims are not with name The difference of title is as the mode for distinguishing component, but with the difference of component functionally as the criterion of differentiation.Such as logical The "comprising" of piece specification and claim mentioned in is an open language, therefore should be construed to " include but do not limit In "." substantially " refer within an acceptable error range, those skilled in the art can within a certain error range solve described in Technical problem basically reaches the technical effect.

In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right", The orientation or positional relationship of the instructions such as level " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description originally Utility model and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific Orientation construction and operation, therefore should not be understood as limiting the present invention.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be Concrete meaning in the present invention.

The utility model is described in further detail below in conjunction with attached drawing, but not as the restriction to the utility model.

Embodiment 1

As Figures 1 and 4 shown in -9, a kind of electrokinetic cell fixture, including piston mechanism 1 and it is set to piston mechanism 1 Pressure relief 2, piston mechanism 1 includes that piston rod 11 and the guide sleeve 12 with the cooperation of piston rod 11, pressure relief 2 make The partial high pressure that piston rod 11 generates when cooperating with guide sleeve 12 is released.It can be let out according to specific works needs with flexible setting Laminated structure 2, the confined space and nitrogen gas spring internal cavity that pressure relief 2 forms piston rod 11 when working with guide sleeve 12 Connection, avoids the generation of partial high pressure, so as to avoid the leakage of nitrogen, extends the service life of nitrogen gas spring.

Preferably, the number of pressure relief 2 is at least 1.

Preferably, pressure relief 2 is set to piston rod 11.The edge in 11 bottom of piston rod can be set in pressure relief 2 And/or middle part, it as the case may be can be with flexible setting.

Preferably, the shape of the cross section of pressure relief 2 is semicircle, round, arc or polygon.Pressure relief 2 Cross-sectional area can be it is varied, according to working environment flexible setting.

Preferably, the shape of the cross section of pressure relief 2 is at least one of semicircle, round, arc and polygon. This design is conducive to mass production, so that pressure release effect is reinforced.

The utility model further includes the first sealing ring 3, the second sealing ring 4 and cylinder body 5, and piston rod 11 passes through the first sealing ring 3 cooperate with guide sleeve 12, and guide sleeve 12 is cooperated by the second sealing ring 4 with cylinder body 5.This structure design is so that cylinder body 5, first Sealing ring 3, the second sealing ring 4, motion bar and guide sleeve 12 together constitute a closed cavity, so that nitrogen gas spring is normal Work.

The working principle of the utility model is: pressure relief 2 is set to piston rod 11, being needed according to specific works can spirit Setting living, when nitrogen gas spring works, piston rod 11 moves reciprocatingly, and it is closed to will form a part when cooperating with guide sleeve 12 Space, and squeeze the nitrogen in space and form partial high pressure, so that high pressure nitrogen crosses the first sealing ring 3 and is extruded nitrogen gas spring To cause gas leakage, pressure relief 2 makes in the confined space and nitrogen gas spring that are formed when piston rod 11 and the cooperation of guide sleeve 12 The connection of portion's cavity, extends nitrogen gas spring so as to avoid the generation of partial high pressure nitrogen so as to avoid the leakage of nitrogen Service life.

Embodiment 2

As shown in figure 3, unlike the first embodiment: the pressure relief 2 of the present embodiment is set to guide sleeve 12.Pressure release knot Structure 2 can be set on guide sleeve 12, and structure can be varied, but the effect played is the same.

Other structures are same as Example 1, and which is not described herein again.

Embodiment 3

As shown in figs. 3-9, unlike the first embodiment: the pressure relief 2 of the present embodiment is set to 11 He of piston rod simultaneously Guide sleeve 12.Pressure relief 2 can be arranged in simultaneously on piston rod 11 and guide sleeve 12, strengthen the effect of pressure release.

Other structures are same as Example 1, and which is not described herein again.

Several preferred embodiments of the present invention have shown and described in above description, but as previously described, it should be understood that this Utility model is not limited to forms disclosed herein, and should not be regarded as an exclusion of other examples, and can be used for various Other combinations, modification and environment, and above-mentioned introduction or related fields can be passed through within the scope of the inventive concept described herein Technology or knowledge be modified.And changes and modifications made by those skilled in the art do not depart from the spirit and model of the utility model It encloses, then it all should be in the protection scope of the appended claims for the utility model.

Claims (8)

1. a kind of nitrogen gas spring of anti-gas-leak, it is characterised in that: including piston mechanism (1) and be set to the piston mechanism (1) pressure relief (2), the piston mechanism (1) include piston rod (11) and lead with the cooperation of the piston rod (11) To set (12), the pressure relief (2) is used to discharge the pressure generated when the piston rod (11) and the guide sleeve (12) cooperate Power.

2. the nitrogen gas spring of anti-gas-leak as described in claim 1, it is characterised in that: the pressure relief (2) is set to described Piston rod (11).

3. the nitrogen gas spring of anti-gas-leak as described in claim 1, it is characterised in that: the pressure relief (2) is set to described Guide sleeve (12).

4. the nitrogen gas spring of anti-gas-leak as described in claim 1, it is characterised in that: the pressure relief (2) is set to simultaneously The piston rod (11) and the guide sleeve (12).

5. the nitrogen gas spring of anti-gas-leak as described in claim 1, it is characterised in that: the number of the pressure relief (2) is at least It is 1.

6. the nitrogen gas spring of anti-gas-leak as described in claim 1, it is characterised in that: the cross section of the pressure relief (2) Shape is semicircle, round, arc or polygon.

7. the nitrogen gas spring of anti-gas-leak as described in claim 1, it is characterised in that: the cross section of the pressure relief (2) Shape is at least one of semicircle, round, arc and polygon.

8. the nitrogen gas spring of anti-gas-leak as described in claim 1, it is characterised in that: further include the first sealing ring (3), second close Seal (4) and cylinder body (5), the piston rod (11) is cooperated by first sealing ring (3) and the guide sleeve (12), described Guide sleeve (12) is cooperated by second sealing ring (4) and the cylinder body (5).