CN110081213A - A kind of valve inside and nitrogen gas spring - Google Patents
A kind of valve inside and nitrogen gas spring Download PDFInfo
- Publication number
- CN110081213A CN110081213A CN201910472963.4A CN201910472963A CN110081213A CN 110081213 A CN110081213 A CN 110081213A CN 201910472963 A CN201910472963 A CN 201910472963A CN 110081213 A CN110081213 A CN 110081213A
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- Prior art keywords
- core
- hole
- sealing
- core bar
- gasket
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
- F16F9/0281—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/43—Filling or drainage arrangements, e.g. for supply of gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/20—Check valves specially designed for inflatable bodies, e.g. tyres
- F16K15/205—Check valves specially designed for inflatable bodies, e.g. tyres and with closure plug
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
- F16F2222/126—Fluid damping using gases
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The present invention relates to nitrogen gas spring technical field, disclosing a kind of valve inside and nitrogen gas spring, valve inside includes core, core bar and gasket, there is through-hole inner cavity in core；Core bar is contained in through-hole inner cavity, and the limiting section of the sealing including one end and the other end, and sealing is arranged in core outer end；Gasket is equipped with through-hole, and gasket is arranged between core one end and the sealing of core bar；Intracavitary in through-hole to be provided with stepped hole, step bore dia is greater than the diameter of core bar, core bar axial activity in stepped hole, it is first position when limiting section and stepped hole contact, and in first position, gas can the gas passage between stepped hole and core bar pass through, realize the ventilation of through-hole inner cavity；It is the second position when sealing is contacted by gasket and stepped hole, and in the second position, core bar realizes the sealing of through-hole inner cavity by gasket and core.The valve inside only needs three part cooperations that can realize that structure is simple to opening or closing, and cost of manufacture is lower.
Description
Technical field
The present invention relates to nitrogen gas spring technical field more particularly to a kind of valve insides and nitrogen gas spring.
Background technique
Nitrogen gas spring is a kind of component with spring function, and this component is known as nitrogen cylinder or gas spring, abbreviation nitrogen
Gas spring is a kind of device of transfer pressure.Nitrogen gas spring have it is small in size, elastic force is big, and the service life is long, the constant spy of elastic force pressure
Point.Small in size to save die space, elastic force can reduce greatly number of springs, and service life length can reduce mold repair number, therefore drop
The low totle drilling cost of mold.
The number of parts of current nitrogen gas spring valve inside is typically maintained in 4-5 part or so, due to itself its zero
Part negligible amounts, if reducing the quantity for constituting its part on the basis of not influencing valve inside function, valve inside will be substantially reduced
Cost of manufacture, the difficulty of its certain structure and manufacture craft and abjection risk etc. of inner shaft requires in use
It considers.
Therefore, a kind of valve inside and nitrogen gas spring are needed, to solve the above technical problems.
Summary of the invention
The purpose of the present invention is to provide a kind of valve inside and nitrogen gas springs, have structure simple, the low spy of production cost
Point.
To achieve this purpose, the present invention adopts the following technical scheme:
On the one hand, a kind of valve inside is provided, comprising:
Core has through-hole inner cavity in the core；
Core bar, the core bar is contained in the through-hole inner cavity, and the limiting section of the sealing including one end and the other end,
The sealing is arranged in core outer end；
Gasket, the gasket are equipped with through-hole, and the gasket is arranged in the core one end and the core bar
Sealing between；
Intracavitary in the through-hole to be provided with stepped hole, the step bore dia is greater than the diameter of the core bar, the core bar
Can the axial activity in the stepped hole, be first position when the limiting section and the stepped hole contact, and described the
One position, gas can the gas passage between the stepped hole and the core bar pass through, realize through-hole inner cavity ventilation；
It is the second position when sealing is contacted by gasket and the stepped hole, and in the second position, institute
State the sealing that core bar realizes through-hole inner cavity by gasket and the core.
Preferably, there are air inlets between the first position, the limiting section and the stepped hole, so that gas stream
It is logical.
Preferably, the limiting section outer peripheral surface is circular conical surface, and the circular conical surface is on the direction far from the sealing
Gradually expand outwardly；
Port shape of the stepped hole close to one end of the limiting section is polygon or ellipse；Or
The stepped hole offers air channel on one end of the limiting section the or described limiting section.
Preferably, the gasket is sheathed on one end of the core, and the core is provided with one end of the gasket
Equipped with boss rank, the gasket is equipped with the concave station rank cooperated with the boss rank.
On the other hand, a kind of valve inside is provided, has gas passage, comprising:
Core, the core have through-hole inner cavity, and through-hole inner cavity one end is a matching hole；
Core bar, the core bar are contained in the matching hole, and the limiting section of the sealing including one end and the other end, institute
State the outer end that matching hole is arranged in sealing；The radial dimension of the matching hole is less than the through-hole inner cavity and the sealing
Radial dimension；
Sealing element, the sealing element are arranged between the core one end and the sealing of the core bar；
The core bar can axial activity be in the matching hole to open or close the gas passage, when the limit
Portion is first position when being connected to the core, and in the first position, the gas passage is in the open state, and gas can
Pass through from the gas passage, realizes the ventilation of the valve inside；
It is the second position when the sealing presses on the core by sealing element, it is described in the second position
Gas passage is in close state.
Preferably, gap of the gas passage between the core bar and the matching hole, in the first position, institute
It states between limiting section and the matching hole there are air inlet, so that gas circulates.
Preferably, the limiting section outer peripheral surface is circular conical surface, and the circular conical surface is on the direction far from the sealing
Gradually expand outwardly；
Port shape of the matching hole close to one end of the limiting section is polygon or ellipse；Or
The matching hole offers air channel on one end of the limiting section or the limiting section.
Preferably, the gas passage includes the gap between the core bar and the matching hole, the core or described
It is provided on core bar and is connected to the gap and the intercommunicating pore of the through-hole inner cavity far from sealing one end；
Or, being provided with venthole on the core bar, the gas passage is setting and the venthole on the core bar.
Preferably, the sealing element is gasket, and the gasket is sheathed on one end of the core, the core setting
There is one end of the gasket to be equipped with boss rank, the gasket is equipped with the concave station rank cooperated with the boss rank.
Preferably, the one end of the core bar far from the sealing is circumferentially spaced is laid with several claws, the claw
One end far from the sealing is provided with grab, and the grab stretches out in the outer peripheral surface of the core bar, and the claw being capable of edge
The core bar radial direction breathing so that the claw can run through the matching hole, and engages with the core；The grab shape
At the limiting section, it is logical that the gap between through slot and the core bar and the core between adjacent claw forms the gas
Road.
Preferably, described core bar one end is equipped with a blind hole, and the limiting section is that the blind hole punching press or riveting are flared
Expand platform.
Preferably, external screw thread is provided on the lateral wall of the one end of the core far from the sealing；In the through-hole
It is intracavitary to be equipped with interior hexagonal hole.
In another aspect, providing a kind of nitrogen gas spring, which employs valve insides as described above.
Beneficial effects of the present invention: core bar slides axially along stepped hole, can limiting section contact stepped hole, at this time valve
Core open, gas can between core bar and the side wall of stepped hole gas passage flowing.Sealing to close to core side
To movement, it is pressed to gasket between sealing and core, sealing cooperates gasket will be between core bar and stepped hole
Gap blocks, and valve inside is closed.The valve inside only needs three part cooperations that can realize that structure is simple to opening or closing, by
Be not to the requirement on machining accuracy of core bar and core in the presence of gasket it is very high, cost of manufacture is lower.
Detailed description of the invention
Fig. 1 is the structure chart for the valve inside that embodiment one provides；
Fig. 2 is the assembling schematic diagram when valve inside that embodiment one provides uses；
The structural schematic diagram when aerating valve that Fig. 3 provides for embodiment one；
Fig. 4 is the structural schematic diagram figure when valve inside that embodiment one provides seals；
Structural schematic diagram (port of the stepped hole close to one end of limiting section when Fig. 5 is the aerating valve of embodiment two
For regular hexagon)；
Fig. 6 be in Fig. 5 along the sectional view of A-A；
(stepped hole is close to one end of limiting section for structural schematic diagram when the valve inside sealing that Fig. 7 provides for embodiment two
Port is regular hexagon)；
Fig. 8 a is the partial structural diagram of valve inside provided by the invention (air channel is set on core)；
Fig. 8 b is the partial structural diagram of valve inside provided by the invention (air channel is set on limiting section)；
Fig. 8 c is the partial structural diagram of valve inside provided by the invention (air channel is set on core)；
Fig. 8 d is the partial structural diagram of valve inside provided by the invention (intercommunicating pore is set on core)；
Fig. 8 e is the partial structural diagram of valve inside provided by the invention (intercommunicating pore is set on core bar)；
Structural schematic diagram (venthole is provided on core bar) when the aerating valve that Fig. 9 provides for embodiment two；
Figure 10 is the process schematic diagram for the limiting section that embodiment two provides；
Structural schematic diagram (claw is provided on core bar) when the aerating valve that Figure 11 provides for embodiment two；
Figure 12 a is the partial structural diagram of valve inside provided by the invention (sealing ring is set on core)；
Figure 12 b is the partial structural diagram of valve inside provided by the invention (sealing ring is set on sealing)；
Figure 12 c is the partial structural diagram of valve inside provided by the invention (sealing ring is set on core bar)；
Figure 12 d is the partial structural diagram of valve inside provided by the invention (sealing ring is placed on sealing)；
Figure 13 is the structural schematic diagram for the nitrogen gas spring that embodiment two provides (valve inside is in the open state)；
Figure 14 is the structural schematic diagram for the nitrogen gas spring that embodiment two provides (valve inside is in close state).
In figure: hexagonal hole, 12- stepped hole, 13- boss rank, 14- matching hole, 2- gasket, 21- are recessed in 1- core, 11-
Step, 3- core bar, 31- sealing, 32- limiting section, 33- blind hole；34- claw, 41- air channel, 42- protrusion；43- intercommunicating pore,
44- venthole, 51- guide surface, 52- card and protrusion.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " on ", "lower", "left", "right", "vertical", "horizontal",
The orientation or positional relationship of the instructions such as "inner", "outside" be based on the orientation or positional relationship shown in the drawings or the invention produce
Product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and should not be understood as referring to
Show or imply relative importance.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two with
On.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" connection " 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 be
Mechanical connection, is also possible to be electrically connected.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
Embodiment one
As shown in Figs 1-4, present embodiment discloses a kind of valve inside can be applied on nitrogen gas spring, control nitrogen
The inflation and exhaust of spring.Including core 1, core bar 3 and gasket 2, there is through-hole inner cavity in core 1.Core bar 3 is contained in through-hole
In chamber, core bar 3 includes the body of rod, and the limiting section 32 including the sealing of body of rod one end 31 and the other end, the setting of sealing 31 exist
1 outer end of core.
Gasket 2 is equipped with through-hole, and gasket 2 is arranged between 1 one end of core and the sealing 31 of core bar 3, seals
Portion 31 can be sealing station, and the diameter of sealing 31 is greater than the through-hole on gasket 2, to guarantee that it realizes sealing, this implementation
Example only just realizes the sealing of nitrogen gas spring by three parts, and cost of manufacture is made to reduce 1/5-1/4.
Intracavitary in the present embodiment through-hole to be provided with stepped hole 12, the internal diameter of the one end of through-hole inner cavity far from sealing 31 is greater than
The internal diameter of stepped hole 12,12 diameter of stepped hole are greater than the diameter of core bar 3, core bar 3 axial activity, limiting section 32 in stepped hole 12
It is first position when being contacted with stepped hole 12, specifically, as shown in figure 3, gas can be from the step in the first position
Gas passage between hole 12 and the core bar 3 passes through, gap of the gas passage between core bar 3 and stepped hole 12, realizes
The ventilation of through-hole inner cavity can inflate for nitrogen gas spring.Limiting section 32 can limit core bar 3, can prevent from inflating
When core bar 3 fall off from core 1.
At first position, in order to enter to the gas of through-hole inner cavity smoothly between stepped hole 12 and core bar 3
Gas passage, there are air inlet or ventholes between limiting section 32 and stepped hole 12.Air inlet is specially limiting section 32 and platform
Gap between rank hole 12.Intercommunicating pore can be set on core 1, also can be set on core bar 3.It is set on core 1
Two ports of intercommunicating pore are located on an end face intracavitary in the inner wall and through-hole in 12 hole of stepped hole；It is set on core bar 3
Intercommunicating pore two ports be located on 3 outer wall of core bar and the blind hole 33 of one end that core bar 3 is provided with limiting section 32 in, even
Gap and through-hole inner cavity are far from 31 one end of sealing between through-hole connection core bar 3 and stepped hole 12.It, being capable of shape at first position
Venting channels are collectively formed as nitrogen gas spring inflation at air inlet and gas passage.It can also be other shapes in other embodiments
Formula, as long as the gap that can be connected between stepped hole 12 and core bar 3 and vent lumen.
It is the second position when sealing 31 is contacted by gasket 2 and stepped hole 12, specifically, as shown in figure 4, and the
Two positions, the two sides of gasket 2 are compressed by the end face of sealing 31 and core 1 respectively, are realized by gasket 2 and core 1 logical
The sealing of hole inner cavity makes the nitrogen in nitrogen gas spring will not Self-discharged.
Gasket 2 can be set on core 1, also can be set on core bar 3.Preferably, the present embodiment is provided with close
1 end of core of packing 2 is equipped with boss rank 13, and gasket 2 is equipped with the concave station rank 21 cooperated with boss rank 13, utilizes core 1
On boss rank 13 and the concave station rank 21 on gasket 2, form good positioning, ensure that gasket 2 position stablize
Property.Gasket 2 is sheathed on core 1, can be avoided under high pressure, and gasket 2 is deformed 3 locking of core bar, so that
Subsequent valve inside can not be opened.Sealing 31 is each perpendicular to stepped hole 12 close to the end face of gasket 2 and the end face of boss rank 13
Axis, since 2 extruded two sides of gasket are plane, gasket 2 deforms small after being squeezed, and gasket 2 is not
It is easy to damage.
The present embodiment core bar 3 is equipped with a blind hole 33 far from one end of sealing 31, and limiting section 32 is 33 punching press of blind hole flaring
The expansion platform of formation, production process is simple, reduces processing cost.Limiting section 32 can also pass through in other embodiments
Riveting machine-shaping.Limiting section 32 can preferably limit core bar 3, and core bar 3 in gas replenishment process is avoided to be detached from core 1.Punching press
The limiting section 32 that flaring is formed is taper.Core bar 3 be it is cylindric, in order to formed between limiting section 32 and stepped hole 12 exist seam
Gap, to form air inlet, specifically, stepped hole 12 is polygon or slotted eye, stepped hole 12 close to one section of limiting section 32
One section close to sealing 31 is that the cross sectional shape of round hole or stepped hole 12 close to one end of limiting section 32 is circle, still
Air channel is offered close to one end of limiting section 32 in stepped hole 12.When limiting section 32 is connected to stepped hole 12, polygon
Edge, elliptical radian smaller part or air channel do not contacted with limiting section 32, will form limiting section 32 and stepped hole 12
Between gap, to form air inlet, so that gas smoothly passes over.For the ease of processing and fabricating, preferably, the present embodiment
In stepped hole 12 close to one section of limiting section 32 be hexagonal hole.In other embodiments or pentagon, four sides
Shape, octagon hole etc..
Intracavitary in the opposite through-hole of the present embodiment stepped hole 12 to be equipped with interior hexagonal hole 11, hexagon socket head cap screw is inserted into interior hexagonal hole
Core 1 can be tightened on nitrogen gas spring in 11.The outer wall of the one end of core 1 far from sealing 31 is equipped with screw thread, convenient
It is mounted on nitrogen gas spring.
The material of core bar 3 and core 1 is metal, is brass in the present embodiment.In the present embodiment, the material of gasket 2 is
Rubber can also be in other embodiments silica gel etc..
The specific operation logic of the present embodiment: being the inflated condition figure of the present embodiment as shown in Figure 3 and Figure 4, at this time core bar
3 contact limiting section 32 with stepped hole 12 under ambient pressure P1 effect, between nitrogen passes through between stepped hole 12 and core bar 3
Gap enters in nitrogen gas spring cavity, and after inflation, nitrogen gas spring internal pressure P2 is greater than external atmospheric pressure, at this time core bar 3
Sealing 31 contacted with gasket 2 and abut realization sealing.
The present embodiment also discloses a kind of nitrogen gas spring, and above-mentioned valve inside is mounted at the inflating port of the nitrogen gas spring.
It will push core bar 3 in extraneous high pressure gas when inflation to slide along the axis of stepped hole 12, limiting section 32 is contacted with stepped hole 12,
Valve inside is opened referring in particular to Fig. 3 at this time, gas can the gap between core bar 3 and the side wall of stepped hole 12 enter to nitrogen
In gas spring.When valve inside is opened, limiting section 32 can be avoided core bar 3 and fall off from core 1.
When inflate complete after high pressure gas in nitrogen gas spring pressure under, sealing 31 is to the side close to core 1
To movement, sealing 31 is made to press on the side of gasket 2, the other side of gasket 2 presses on the end face of boss rank 13, sealing
Portion 31 cooperates gasket 2 to block the gap between core bar 3 and stepped hole 12, and valve inside is closed referring in particular to Fig. 4, nitrogen gas spring
Interior high pressure gas can not be discharged.
When nitrogen gas spring needs to be vented, the sliding axially along stepped hole 12 of core bar 3 is headed on using external thimble, makes limiting section
32 move inwards, and sealing 31 no longer presses on gasket 2, and gasket 2 can not block the gap of core bar 3 Yu stepped hole 12, nitrogen
Gas in gas spring is discharged along gap.
Embodiment two
As shown in Fig. 5-Figure 11, present embodiment discloses a kind of valve insides, have gas passage, can be applied to nitrogen
On spring, the inflation and exhaust of nitrogen gas spring are controlled.Including core 1, core bar 3 and sealing element, core 1 is provided with through-hole inner cavity,
One end of through-hole inner cavity is a matching hole 14.Core bar 3 is contained in matching hole 14, and core bar 3 includes the body of rod, and including body of rod one end
Sealing 31 and the other end limiting section 32, when valve inside installs sealing 31 be arranged in 1 outer end of core.
Sealing element is arranged between 1 one end of core and the sealing 31 of core bar 3, and core bar 3 is arranged in matching hole 14 and close
The through-hole of sealing.Sealing 31 can be sealing station, and sealing station can be stretched in close by being stamped and formed out outside the outer rim of sealing 31
The outside of the through-hole of sealing, to guarantee that it realizes sealing, sealing station can be truncated cone-shaped.Sealing strip in other embodiments
It can be process by riveting.
Referring to figure 5. and Fig. 7, limiting section 32 is one to expand platform, expands platform on the direction far from sealing 31 gradually to extending out
The outside of 14 port of matching hole is opened and stretches out in, 14 one end of matching hole can be connected to by expanding platform, realize the limit to core bar 3.It is excellent
Selection of land, the distance a that expansion platform outer rim protrudes from 14 inner wall of matching hole is more than or equal to 0.2mm, more effectively to be limited core bar 3
Position avoids the disengaging of core bar 3 core 1 in gas replenishment process from causing safety accident.
As illustrated in figs. 5-7, the radial dimension of the one end of through-hole inner cavity far from sealing 31 is greater than the radial ruler of matching hole 14
Very little, 14 radial dimension of matching hole is greater than the radial dimension of 3 body of rod of core bar, core bar 3 can in matching hole 14 axial activity and
Switch between first position and the second position, to open or close gas passage.
Limiting section 32 is first position when being connected to core 1, specifically, as shown in figure 5, in the first position, sealing
Portion 31 is separated with core 1, and gas passage is in the open state, and gas can be from the gas passage by realizing through-hole inner cavity
Ventilation can inflate for nitrogen gas spring or other devices.Limiting section 32 can limit core bar 3, can prevent from inflating
When core bar 3 fall off from core 1.
It is the second position when sealing 31 is pressed against each other by sealing element and core 1, specifically, as shown in fig. 7, and second
Position, the two sides of sealing element are compressed by the end face of sealing 31 and core 1 respectively, realize that gas is logical by sealing element and core 1
The sealing of road one end makes the nitrogen in nitrogen gas spring will not Self-discharged.
In the present embodiment, at first position, in order to make the gas of through-hole inner cavity smoothly enter to matching hole 14
With the gas passage between core bar 3, there is preferably air inlets between limiting section 32 and matching hole 14.Gas passage is core bar 3
With the gap between matching hole 14, air inlet is specially the gap or notch between limiting section 32 and matching hole 14.For the ease of
Processing and fabricating, as preferred 32 outer peripheral surface of limiting section be circular conical surface, 3 body of rod of core bar be it is cylindric, matching hole 14 is close to limiting section
32 one end port is polygon or slotted eye, when limiting section 32 is connected to 14 one end of matching hole, the edge of polygon,
Elliptical radian smaller part or air channel do not contact with limiting section 32, will form the seam between limiting section 32 and matching hole 14
Gap, to form air inlet, so that gas smoothly passes over.
As shown in fig. 6, the matching hole 14 in the present embodiment is preferably stepped hole, difficulty of processing is reduced, matching hole 14 leans on
One section of nearly limiting section 32 is polygonal hole, such as regular pentagon, hexagonal hole etc., and matching hole 14 is close to sealing 31
One section is round hole, and polygonal hole and round hole intersection form step.It is appreciated that in other embodiments, matching hole 14
It can be the polygonal hole or slotted eye of perforation.
It should be noted that in other embodiments, air inlet can be formed by other means.For example it is leaned in matching hole 14
One end of nearly limiting section 32 offers air channel 41, specifically please refers to Fig. 8 a；Or air channel 41 is offered on limiting section 32,
Specifically please refer to Fig. 8 b；For another example in matching hole 14 close to one end circumferentially-spaced laying of limiting section 32 several raised 42, specifically
Please refer to Fig. 8 c；Limiting section outer peripheral surface is polygonal pyramid shape for another example, and matching hole 14 is circle；Etc., as long as can be realized limit
Portion's outer peripheral surface is not matched that with matching hole port, is discontinuously abutted against both at first position.Alternatively, can also be in core
Intercommunicating pore 43 is set on body 1 or core bar 3；Fig. 8 d is please referred to, when intercommunicating pore 43 is arranged on core 1, two of intercommunicating pore 43 are held
Mouth is located on a step surface intracavitary in the inner wall and through-hole of matching hole 14, and gas passage includes core bar 3 and matching hole 14
Between gap and the intercommunicating pore 43, the air inlet of gas passage be the port of 43 one end of intercommunicating pore；Fig. 8 e is please referred to, connection is worked as
Hole 43 be arranged on core bar 3, two ports of intercommunicating pore 43 be located on the outer wall of core bar 3 and the blind hole 33 of core bar 3 in, and
The port that outer wall of hole is connected to when core bar 3 is located at first position is located in matching hole 14, and gas passage includes core bar 3 and matching hole
Gap and the intercommunicating pore 43 between 14, the air inlet of gas passage are that intercommunicating pore 43 is located at the port in blind hole.
It should be noted that in other embodiments, gas passage can be arranged directly on core bar 3, Fig. 9 is please referred to,
Venthole 44 is set on core bar 3,44 one end port of venthole is located in 3 blind hole of core bar, and port number can be one or more,
The port of 44 other end of venthole is located at core bar on 31 one end outer wall of sealing, and at first position, venthole 44
The port of one end is located at outside matching hole 14, and port number is preferably several, such as 2-4, multiple circumferentially spaced layings in port,
So that gas replenishment process is smooth and core bar 3 will not be squeezed and deformed with core 3, gas passage is the venthole 44, gas passage
Air inlet be venthole 44 be located at the port in blind hole 33.
It please refers to Figure 10, in the present embodiment, expands platform by carrying out riveting to 3 one end of core bar or being stamped and formed out.It is remote in core bar 3
One end from sealing 31 opens up a blind hole 33, and after 3 one end of core bar is installed in place through matching hole 14, blind hole is arranged to core bar 3
33 one end carries out riveting or is stamped and formed out expansion platform.Its production process of valve inside provided in this embodiment is simple, only passes through
Three parts just realize the sealing of nitrogen gas spring, and cost of manufacture is made to reduce 1/5-1/4.
As shown in figure 11, in other embodiments, the one end of core bar 3 far from sealing 31 it is circumferentially spaced be laid with it is several
Claw 34, claw 34 are provided with grab far from one end of sealing 31, and grab stretches out in the outer peripheral surface of core bar 3, and claw 34 can
Along the radial breathing of core bar 3, so that claw 34 can be arranged in matching hole 14 and engage with core 1；Grab forms limiting section, phase
Gap between through slot and core bar 3 and core 1 between adjacent claw 34 forms gas passage.Grab is set far from 31 side of sealing
It is equipped with guide surface 51, for guide surface 51 far from gradually collapsing on 32 direction of limiting section, guide surface 51 can be circular conical surface, inclined-plane
Deng preferably circular conical surface, cone angle is preferably θ=90-120 degree, in order to the installation of core bar 3；Further, grab is close to sealing
Portion side is provided with confined planes, and confined planes gradually collapse on separate limiting section direction and form a limiting slot with body of rod outer peripheral surface,
And snap fit tabs 52 are provided on the through-hole inner cavity step surface of core 1, snap fit tabs 52 it is embeddable in limiting slot and with limit
Slot matches, and allows to preferably limit core bar 3, and the disengaging of core bar 3 core in gas replenishment process is avoided to cause safe thing
Therefore.At this point, the shape of matching hole 14 can be circle, it is also possible to polygon, ellipse or other shapes, as long as can protect
It demonstrate,proves 14 radial dimension of matching hole and is less than radial dimension of the through-hole inner cavity far from 31 one end of sealing, provide one for the abutting of grab
Contact surface.
Sealing element can be set on core 1, also can be set on core bar 3.As shown in Fig. 5, Fig. 7 and Fig. 9, preferably
, the present embodiment sealing element can be gasket 2, and 1 end of core for being provided with gasket 2 is equipped with boss rank 13, on gasket 2
Equipped with the concave station rank 21 cooperated with boss rank 13, the boss rank 13 on core 1 and the concave station rank 21 on gasket 2, shape are utilized
At good positioning, the positional stability of gasket 2 ensure that.Gasket 2 is sheathed on core 1, can be avoided in high pressure
Under the conditions of, gasket 2 is deformed 3 locking of core bar, so that subsequent valve inside can not be opened.Meanwhile gasket 2 is sheathed on core
1 one end of body, when so that valve inside being installed to nitrogen gas spring or other devices, gasket 2 can abut sealing with inner wall of the hole installing
Mounting hole guarantees that nitrogen gas spring or other devices will not gas leakage.Sealing 31 is close to the end face of gasket 2 and the end of boss rank 13
Face is each perpendicular to the axis of matching hole 14, and since 2 extruded two sides of gasket are plane, gasket 2 is being squeezed
After deform small, gasket 2 is hardly damaged.
Figure 12 a-12d is please referred to, in other embodiments, sealing element can be sealing ring, and sealing ring can be directly embedded into
In 1 one end groove of core or sealing ring can also be embedded in sealing 31 in an end face of core 1；Sealing element can be with
For gasket 2, gasket 2 can directly be set on 3 body of rod of core bar or be provided on gasket 2 to match with sealing 31
The groove of conjunction, gasket 2 are sheathed on sealing 31, and the contact surface of gasket 2 and core 1 is plane.
The opposite through-hole inner cavity of the present embodiment matching hole 14 is equipped with interior hexagonal hole 11, and hexagon socket head cap screw is inserted into interior hexagonal hole
Core 1 can be tightened on nitrogen gas spring in 11.The outer wall of the one end of core 1 far from sealing 31 is equipped with screw thread, convenient
It is mounted on nitrogen gas spring.
The material of core bar 3 and core 1 is metal, is brass in the present embodiment.In the present embodiment, the material of gasket 2 is
Rubber can also be in other embodiments silica gel etc..
The specific operation logic of the present embodiment: as shown in figure 5, being the inflated condition figure of the present embodiment, core bar 3 is outside at this time
Pressure effect in boundary's is lower so that limiting section 32 is contacted with matching hole 14, and nitrogen leads to gas passage and enters in nitrogen gas spring cavity, inflates
After, nitrogen gas spring internal pressure is greater than external atmospheric pressure, and the sealing 31 of core bar 3 is contacted and supported with gasket 2 at this time
Connect realization sealing.
Figure 13 and 14 is please referred to, the present embodiment also discloses a kind of nitrogen gas spring, installs at the inflating port of the nitrogen gas spring
Above-mentioned valve inside.When inflation, under extraneous high pressure gas effect, core bar 3 is pushed to slide along the axis of matching hole 14, limit
Position portion 32 is contacted with matching hole 14, and valve inside is opened at this time, between gas can be between core bar 3 and the side wall of matching hole 14
Gap enters in nitrogen gas spring.When valve inside is opened, limiting section 32 can be avoided core bar 3 and fall off from core 1.
When inflate complete after high pressure gas in nitrogen gas spring pressure under, sealing 31 is to the side close to core 1
To movement, sealing 31 is made to press on the side of gasket 2, the other side of gasket 2 presses on the end face of boss rank 13, sealing
Portion 31 cooperates gasket 2 to block the gap between core bar 3 and matching hole 14, and valve inside is closed, the high pressure gas in nitrogen gas spring
Body can not be discharged.
When nitrogen gas spring needs to be vented, the sliding axially along matching hole 14 of core bar 3 is headed on using external thimble, makes limiting section
32 move inwards, and sealing 31 no longer presses on gasket 2, and gasket 2 can not block the gap of core bar 3 Yu matching hole 14, nitrogen
Gas in gas spring is discharged along gap.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and being not is pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (13)
1. a kind of valve inside characterized by comprising
Core (1) has through-hole inner cavity in the core (1)；
Core bar (3), the core bar (3) are contained in the through-hole inner cavity, and the sealing (31) including one end and the other end
Limiting section (32), the sealing (31) are arranged in core (1) outer end；
Gasket (2), the gasket (2) are equipped with through-hole, the gasket (2) setting the core (1) one end with
Between the sealing (31) of the core bar (3)；
Intracavitary in the through-hole to be provided with stepped hole (12), stepped hole (12) diameter is greater than the diameter of the core bar (3), institute
Stating core bar (3) can be axial movable in the stepped hole (12), when the limiting section (32) and the stepped hole (12) contact
For first position, and in the first position, gas can gas between the stepped hole (12) and the core bar (3) it is logical
Road passes through, and realizes the ventilation of through-hole inner cavity；
It is the second position when sealing (31) is contacted by gasket (2) and the stepped hole (12), and described second
Position, the core bar (3) realize the sealing of through-hole inner cavity by gasket (2) and the core (1).
2. valve inside according to claim 1, which is characterized in that in the first position, the limiting section (32) and institute
It states between stepped hole (12) there are air inlet, so that gas circulates.
3. valve inside according to claim 2, which is characterized in that limiting section (32) outer peripheral surface is circular conical surface, and institute
Circular conical surface is stated gradually to expand outwardly on the direction far from the sealing (31)；
Port shape of the stepped hole (12) close to the one end of the limiting section (32) is polygon or ellipse；Or
Air channel is offered on one end of the stepped hole (12) close the limiting section (32) the or described limiting section (32).
4. valve inside according to claim 1, which is characterized in that the gasket (2) is sheathed on the one of the core (1)
End, one end that the core (1) is provided with the gasket (2) are equipped with boss rank (13), and the gasket (2) is equipped with and institute
State the concave station rank (21) of boss rank (13) cooperation.
5. a kind of valve inside, has gas passage characterized by comprising
Core (1), the core (1) have through-hole inner cavity, and through-hole inner cavity one end is a matching hole (14)；
Core bar (3), the core bar (3) are contained in the matching hole (14), and sealing (31) and the other end including one end
Limiting section (32), outer end of the sealing (31) setting in matching hole (14)；The radial dimension of the matching hole (14) is small
In the through-hole inner cavity and the radial dimension of the sealing (31)；
Sealing element, the sealing element are arranged between the core (1) one end and the sealing (31) of the core bar (3)；
The core bar (3) can axial activity be in the matching hole (14) to open or close the gas passage, when described
Limiting section (32) is first position when being connected to the core (1), and in the first position, the gas passage is in open shape
State, gas can pass through from the gas passage, realize the ventilation of the valve inside；
It is the second position when the sealing (31) presses on the core (1) by sealing element, in the second position, institute
Gas passage is stated to be in close state.
6. valve inside according to claim 5, which is characterized in that the gas passage is that the core bar (3) match with described
The gap between hole (14) is closed, there are air inlets between the first position, the limiting section (32) and the matching hole (14)
Mouthful, so that gas circulates.
7. valve inside according to claim 6, which is characterized in that limiting section (32) outer peripheral surface is circular conical surface, and institute
Circular conical surface is stated gradually to expand outwardly on the direction far from the sealing；
Port shape of the matching hole (14) close to the one end of the limiting section (32) is polygon or ellipse；Or
The matching hole (14) offers air channel on the one end of the limiting section (32) or the limiting section (32).
8. valve inside according to claim 5, which is characterized in that the gas passage include the core bar (3) with it is described
It is provided with and is connected in the gap and the through-hole on gap between matching hole (14), the core (1) or the core bar (3)
Intercommunicating pore of the chamber far from sealing (31) one end；
Or, being provided with venthole on the core bar (3), the gas passage is setting and the venthole on the core bar (3).
9. valve inside according to claim 5, which is characterized in that the sealing element is gasket (2), the gasket
(2) it is sheathed on one end of the core (1), one end that the core (1) is provided with the gasket (2) is equipped with boss rank
(13), the gasket (2) is equipped with the concave station rank (21) cooperated with the boss rank (13).
10. valve inside according to claim 5, which is characterized in that the one of the core bar (3) separate the sealing (31)
Hold it is circumferentially spaced be laid with several claws (34), the claw (34) is provided with card far from the one end of the sealing (31)
Hook, the grab stretch out in the outer peripheral surface of the core bar (3), the claw (34) can along the radial breathing of the core bar (3), with
So that the claw (34) can run through the matching hole (14), and engage with the core (1)；The grab forms the limit
Position portion, it is logical that the gap between through slot and the core bar (3) and the core (1) between adjacent claw (34) forms the gas
Road.
11. valve inside according to claim 1 or 5, which is characterized in that described core bar (3) one end is equipped with a blind hole (33),
The limiting section (32) is the blind hole (33) punching press or the expansion platform that riveting is flared.
12. valve inside according to claim 1 or 5, which is characterized in that the core (1) is far from the sealing (31)
One end lateral wall on be provided with external screw thread；It is intracavitary in the through-hole to be equipped with interior hexagonal hole (11).
13. a kind of nitrogen gas spring, which is characterized in which employs valve insides such as of any of claims 1-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/095710 WO2020237787A1 (en) | 2018-08-01 | 2019-07-12 | Valve core and nitrogen spring |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018212281599 | 2018-08-01 | ||
| CN201821228159 | 2018-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110081213A true CN110081213A (en) | 2019-08-02 |
Family
ID=67423015
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910472963.4A Withdrawn CN110081213A (en) | 2018-08-01 | 2019-05-31 | A kind of valve inside and nitrogen gas spring |
| CN201920815316.4U Active CN210034558U (en) | 2018-08-01 | 2019-05-31 | Valve inside and nitrogen spring |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920815316.4U Active CN210034558U (en) | 2018-08-01 | 2019-05-31 | Valve inside and nitrogen spring |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN110081213A (en) |
| WO (1) | WO2020237787A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110654186A (en) * | 2019-10-15 | 2020-01-07 | 安徽拓扑思汽车零部件有限公司 | Gasket for automobile TPMS valve and valve installation structure |
| CN110814647A (en) * | 2019-11-04 | 2020-02-21 | 中国万宝工程有限公司 | Control valve core and machining method thereof |
| WO2021120343A1 (en) * | 2019-12-20 | 2021-06-24 | 高密同创气门芯有限公司 | Valve core and charging valve |
| CN113224894A (en) * | 2020-11-22 | 2021-08-06 | 李波波 | Aluminum alloy motor shell and installation method |
| CN114233793A (en) * | 2021-12-31 | 2022-03-25 | 高密同创气门芯有限公司 | Nitrogen spring valve inside and nitrogen spring |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU675767B3 (en) * | 1996-02-20 | 1997-02-13 | Jang Sik Park | Valve core for one way valves |
| KR200470135Y1 (en) * | 2008-12-04 | 2013-11-29 | (주)신한전기 | Core assembly and check valve incorporating the same |
| CN105042133B (en) * | 2015-01-20 | 2017-04-05 | 郭皓 | Multi-purpose vehicle(MPV) tyre valve core |
| CN206669039U (en) * | 2017-04-19 | 2017-11-24 | 高密同创气门芯有限公司 | A kind of nitrogen spring valve inside |
| CN208719480U (en) * | 2018-09-05 | 2019-04-09 | 高密同创气门芯有限公司 | A kind of air conditioning for automobiles charging valve valve inside |
-
2019
- 2019-05-31 CN CN201910472963.4A patent/CN110081213A/en not_active Withdrawn
- 2019-05-31 CN CN201920815316.4U patent/CN210034558U/en active Active
- 2019-07-12 WO PCT/CN2019/095710 patent/WO2020237787A1/en active Application Filing
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110654186A (en) * | 2019-10-15 | 2020-01-07 | 安徽拓扑思汽车零部件有限公司 | Gasket for automobile TPMS valve and valve installation structure |
| CN110654186B (en) * | 2019-10-15 | 2024-05-31 | 安徽拓扑思汽车零部件有限公司 | Gasket for automobile TPMS inflating valve and inflating valve mounting structure |
| CN110814647A (en) * | 2019-11-04 | 2020-02-21 | 中国万宝工程有限公司 | Control valve core and machining method thereof |
| WO2021120343A1 (en) * | 2019-12-20 | 2021-06-24 | 高密同创气门芯有限公司 | Valve core and charging valve |
| CN113224894A (en) * | 2020-11-22 | 2021-08-06 | 李波波 | Aluminum alloy motor shell and installation method |
| CN114233793A (en) * | 2021-12-31 | 2022-03-25 | 高密同创气门芯有限公司 | Nitrogen spring valve inside and nitrogen spring |
| CN114233793B (en) * | 2021-12-31 | 2023-12-01 | 高密同创气门芯有限公司 | Nitrogen spring valve core and nitrogen spring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN210034558U (en) | 2020-02-07 |
| WO2020237787A1 (en) | 2020-12-03 |
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Application publication date: 20190802 |
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