CN209705157U - A kind of temperature-sensitive automatic pressure-balancing piston spring - Google Patents
A kind of temperature-sensitive automatic pressure-balancing piston spring Download PDFInfo
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- CN209705157U CN209705157U CN201920407190.7U CN201920407190U CN209705157U CN 209705157 U CN209705157 U CN 209705157U CN 201920407190 U CN201920407190 U CN 201920407190U CN 209705157 U CN209705157 U CN 209705157U
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- piston
- piston rod
- sealing ring
- spring
- placing groove
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Abstract
The utility model discloses a kind of temperature-sensitive automatic pressure-balancing piston springs, it include: piston sleeve and piston rod, one end of piston rod is protruded into piston sleeve, the end that piston rod protrudes into piston sleeve is further fixed on piston head, the outer rim of piston head is mutually agreed with piston sleeve inner wall, centre bore is formed in the middle part of piston head, a mechanical spring is further fixed on the end alignment centre bore of piston rod and end face, the end that mechanical spring is located remotely from piston rod side is fixed with a sliding valve core, one end on centre bore inner sidewall far from piston rod forms a snap ring, a temperature sensing spring is also socketed on the outside of sliding valve core, one end of temperature sensing spring is fixed on sliding valve core lower part.The utility model improves compressing force when low temperature, ensure that the maintenance of lifting force at low ambient temperatures.
Description
Technical field
The utility model relates to gas spring technology field, specially a kind of temperature-sensitive automatic pressure-balancing piston spring.
Background technique
With the variation of environment temperature, lifting force can change general gas spring therewith, especially in low temperature environment, gas
Spring force, which constantly decreases up to, cannot lift weight bearing or bear a heavy burden sagging.
Utility model content
The purpose of this utility model is to provide a kind of temperature-sensitive automatic pressure-balancing piston springs, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the utility model provides the following technical solutions: a kind of temperature-sensitive automatic pressure-balancing piston bullet
Spring, comprising: one end of piston sleeve and piston rod, piston rod is protruded into piston sleeve, and piston rod protrudes into the end of piston sleeve
It is further fixed on piston head, outer rim and the piston sleeve inner wall of piston head mutually agree with, and centre bore, piston are formed in the middle part of piston head
It is further fixed on a mechanical spring on the end alignment centre bore of bar and end face, mechanical spring is located remotely from the end of piston rod side
Portion is fixed with a sliding valve core, and one end on centre bore inner sidewall far from piston rod forms a snap ring, outside sliding valve core
Side is also socketed with a temperature sensing spring, and one end of temperature sensing spring is fixed on sliding valve core lower part, and the other end of temperature sensing spring is fixed
In snap ring towards the end face of piston rod side, the cross section of piston head towards the side of piston rod is trapezoidal, and piston head is located at remote
It is also provided with sealing ring placing groove in a ring in the outer rim of end from piston rod side, is provided in sealing ring placing groove close
The cross section of seal, sealing ring placing groove is in a rectangular trapezoid, and the right-angle side of sealing ring placing groove is open side, sealing ring placing groove
Long bottom edge be located at side of the piston head far from piston rod, an extension is also provided on the side wall of the trapezoidal side of piston head
To the first through hole of centre bore, the second through-hole is also provided on the side wall of centre bore, the second through-hole is connected to centre bore and sealing ring
Placing groove is also provided with third through-hole, third through-hole communication seals circle placing groove and piston head on the side wall of sealing ring placing groove
End face far from piston rod side.
Preferably, the long bottom edge of sealing ring placing groove is greater than the diameter of sealing ring, the short bottom edge of sealing ring placing groove is small
In the diameter of sealing ring.
Preferably, the diameter of the second through-hole is less than the radius of sealing ring.
Preferably, third through-hole is opened in the long bottom edge of sealing ring placing groove at angled posi-tion.
Preferably, the bottom of sliding valve core forms bottom plate, the round pie that bottom plate mutually agrees with centre bore, mechanical spring
End face of the bottom plate towards the side of piston rod is fixed in one end far from piston head, and temperature sensing spring is fixed close to one end of piston head
The end face of the side of piston rod is directed away from bottom plate.
Preferably, the sliding valve core is under the elastic force effect of the elastic force and mechanical spring of temperature sensing spring at normal temperature
In the valve port open position of sliding valve core, when being lower than 0 DEG C~20 DEG C, the temperature sensing spring elastic force is less than the elastic force of mechanical spring
The valve port of sliding valve core is closed afterwards.
Compared with prior art, the utility model has the beneficial effects that the utility model is under normal temperature state, temperature-sensitive bullet
Spring and mechanical spring act on the bottom plate of sliding valve core simultaneously, so that the valve port of sliding valve core is constantly in opening state, this
Utility model channel is unimpeded, and when use is consistent with common gas spring, and the elastic force of temperature sensing spring reduces when in low-temperature condition, makes to slide
The side that movable valve plug is directed away from piston rod is mobile, so that the valve port of sliding valve core is closed, at this time when the utility model stretches,
Gas or oil liquid can be moved with the path of first through hole, the second through-hole, third through-hole, so that lifting force and common gas spring
Unanimously, when the utility model compresses, sealing ring is pushed into the short bottom edge side of sealing ring placing groove by pressure, thus closing second
Through-hole is located at the port of sealing ring placing groove, so that the path of first through hole, the second through-hole, third through-hole is closed, to improve
Compressing force when low temperature ensure that the maintenance of lifting force at low ambient temperatures.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure: 1 is piston sleeve, and 2 be piston rod, and 3 be piston head, and 4 be mechanical spring, and 5 be sliding valve core, and 6 be snap ring,
7 be temperature sensing spring, and 8 be sealing ring placing groove, and 9 be sealing ring, and 10 be first through hole, and 11 be the second through-hole, and 12 be third through-hole,
13 be bottom plate.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Referring to Fig. 1, the utility model provides a kind of temperature-sensitive automatic pressure-balancing piston spring, comprising: piston sleeve 11
With piston rod 2, one end of piston rod 2 is protruded into piston sleeve 1, and the end that piston rod 2 protrudes into piston sleeve 1 is further fixed on piston
First 3, outer rim and 1 inner wall of piston sleeve of piston head 3 mutually agree with, and the middle part of piston head 3 forms centre bore, the end of piston rod 2
A mechanical spring 4 is further fixed on portion's aligned central holes and end face, mechanical spring 4 is located remotely from the end of 2 side of piston rod
It is fixed with a sliding valve core 5, one end far from piston rod 2 forms a snap ring 6, sliding valve core 5 on centre bore inner sidewall
Outside is also socketed with a temperature sensing spring 7, and one end of temperature sensing spring 7 is fixed on 5 lower part of sliding valve core, temperature sensing spring 7 it is another
End is fixed on end face of the snap ring 6 towards 2 side of piston rod, and the cross section of piston head 3 towards the side of piston rod 2 is trapezoidal, living
Chock plug 3 is located remotely from the sealing ring placing groove 8 being also provided in the outer rim of the end of 2 side of piston rod in a ring, and sealing ring is put
It sets and is provided with sealing ring 9 in slot 8, the cross section of sealing ring placing groove 8 is in a rectangular trapezoid, and the right-angle side of sealing ring placing groove 8 is
Open side, the long bottom edge of sealing ring placing groove 8 are located at side of the piston head 3 far from piston rod 2, the trapezoidal side of piston head 3
Side wall on be also provided with the first through hole 10 for extending to centre bore, be also provided with the second through-hole on the side wall of centre bore
11, the second through-hole 11 is connected to centre bore and sealing ring placing groove 8, is also provided with third through-hole on the side wall of sealing ring placing groove 8
12,12 communication seals circle placing groove 8 of third through-hole and end face of the piston head 3 far from 2 side of piston rod.
The long bottom edge of sealing ring placing groove 8 is greater than the diameter of sealing ring 9, and the short bottom edge of sealing ring placing groove 8 is less than sealing
The diameter of circle 9.
The diameter of second through-hole 11 is less than the radius of sealing ring 9.
Third through-hole 12 is opened in the long bottom edge of sealing ring placing groove 8 at angled posi-tion.
The bottom of sliding valve core 5 forms bottom plate 13, and the round pie that bottom plate 13 mutually agrees with centre bore, mechanical spring 4 is far
Bottom plate 13 is fixed on towards the end face of the side of piston rod 2 in one end from piston head 3, and temperature sensing spring 7 is close to one end of piston head 3
It is fixed on the end face that bottom plate 13 is directed away from the side of piston rod 2.
Sliding valve core 5 is in sliding valve core under the elastic force effect of the elastic force and mechanical spring 4 of temperature sensing spring 7 at normal temperature
5 valve port open position, when being lower than 0 DEG C~20 DEG C, 7 elastic force of temperature sensing spring is less than sliding valve core 5 after the elastic force of mechanical spring 4
Valve port close.
Working principle are as follows: under normal temperature state, temperature sensing spring 7 and mechanical spring 4 act on the bottom plate 13 of sliding valve core 5 simultaneously
On, so that the valve port of sliding valve core 5 is constantly in opening state, when use, is consistent with common gas spring, when being in low-temperature condition
The elastic force of temperature sensing spring 7 is less than the elastic force of mechanical spring 4, and the side for making sliding valve core 5 be directed away from piston rod 2 is mobile, thus
The valve port of sliding valve core 5 is closed, at this time when the present embodiment stretches, gas or oil liquid can be logical with first through hole 10, second
The path movement in hole 11, third through-hole 12, so that lifting force is consistent with common gas spring, when the present embodiment compression, sealing ring 9
The short bottom edge side of sealing ring placing groove 8 is pushed by pressure, so that the second through-hole 11 of closing is located at the end of sealing ring placing groove 8
Mouthful, so that the path of first through hole 10, the second through-hole 11, third through-hole 12 is closed, so that compressing force when improving low temperature, guarantees
The maintenance of lifting force at low ambient temperatures.
In the description of the present invention, it should be understood that term " coaxial ", " bottom ", " one end ", " top ", " in
The orientation of the instructions such as portion ", " other end ", "upper", " side ", " top ", "inner", " front ", " center ", " both ends " or position are closed
System is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is construed as a limitation of the present invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " setting ", " connection ", " Gu
Calmly ", the terms such as " being screwed on " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；
It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly, for this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of temperature-sensitive automatic pressure-balancing piston spring, comprising: one end of piston sleeve and piston rod, the piston rod is protruded into
In piston sleeve, the end that the piston rod protrudes into piston sleeve is further fixed on piston head, it is characterised in that: the piston head
Outer rim is mutually agreed with piston sleeve inner wall, forms centre bore in the middle part of the piston head, in the end alignment of the piston rod
A mechanical spring is further fixed on heart hole and end face, the end that the mechanical spring is located remotely from piston rod side is fixed with one
A sliding valve core, one end on the centre bore inner sidewall far from piston rod form a snap ring, on the outside of the sliding valve core
Also be socketed with a temperature sensing spring, one end of the temperature sensing spring is fixed on sliding valve core lower part, the temperature sensing spring it is another
End is fixed on end face of the snap ring towards piston rod side, and the cross section of the piston head towards the side of piston rod is trapezoidal, institute
State the sealing ring placing groove being also provided in the outer rim for the end that piston head is located remotely from piston rod side in a ring, the sealing
It is provided with sealing ring in circle placing groove, the cross section of the sealing ring placing groove is in a rectangular trapezoid, the sealing ring placing groove
Right-angle side is open side, and the long bottom edge of the sealing ring placing groove is located at side of the piston head far from piston rod, the piston head
Trapezoidal side side wall on be also provided with the first through hole for extending to centre bore, also opened on the side wall of the centre bore
Equipped with the second through-hole, second through-hole is connected to centre bore and sealing ring placing groove, goes back on the side wall of the sealing ring placing groove
Offer third through-hole, the end face of the third through-hole communication seals circle placing groove and piston head far from piston rod side.
2. a kind of temperature-sensitive automatic pressure-balancing piston spring according to claim 1, it is characterised in that: the sealing ring is put
The long bottom edge for setting slot is greater than the diameter of sealing ring, and the short bottom edge of the sealing ring placing groove is less than the diameter of sealing ring.
3. a kind of temperature-sensitive automatic pressure-balancing piston spring according to claim 1, it is characterised in that: second through-hole
Diameter be less than sealing ring radius.
4. a kind of temperature-sensitive automatic pressure-balancing piston spring according to claim 1, it is characterised in that: the third through-hole
The long bottom edge of sealing ring placing groove is opened at angled posi-tion.
5. a kind of temperature-sensitive automatic pressure-balancing piston spring according to claim 1, it is characterised in that: the sliding valve core
Bottom form bottom plate, the round pie that the bottom plate mutually agrees with centre bore, the one end of the mechanical spring far from piston head
It is fixed on end face of the bottom plate towards the side of piston rod, the temperature sensing spring is fixed on bottom plate towards far close to one end of piston head
The end face of side from piston rod.
6. a kind of temperature-sensitive automatic pressure-balancing piston spring according to claim 1, it is characterised in that: described at normal temperature
Sliding valve core is in the valve port open position of sliding valve core under the elastic force effect of the elastic force and mechanical spring of temperature sensing spring, low
The temperature sensing spring elastic force is less than the valve port closing of sliding valve core after the elastic force of mechanical spring when 0 DEG C~20 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920407190.7U CN209705157U (en) | 2019-03-28 | 2019-03-28 | A kind of temperature-sensitive automatic pressure-balancing piston spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920407190.7U CN209705157U (en) | 2019-03-28 | 2019-03-28 | A kind of temperature-sensitive automatic pressure-balancing piston spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209705157U true CN209705157U (en) | 2019-11-29 |
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ID=68647954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920407190.7U Active CN209705157U (en) | 2019-03-28 | 2019-03-28 | A kind of temperature-sensitive automatic pressure-balancing piston spring |
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| Country | Link |
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| CN (1) | CN209705157U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826897A (en) * | 2019-03-28 | 2019-05-31 | 湖州吉信科技发展有限公司 | A kind of temperature-sensitive automatic pressure-balancing piston spring |
-
2019
- 2019-03-28 CN CN201920407190.7U patent/CN209705157U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826897A (en) * | 2019-03-28 | 2019-05-31 | 湖州吉信科技发展有限公司 | A kind of temperature-sensitive automatic pressure-balancing piston spring |
| CN109826897B (en) * | 2019-03-28 | 2024-06-18 | 湖州吉信科技发展有限公司 | Automatic temperature-sensing pressure balancing piston spring |
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