CN106499765B - Cylinder - Google Patents
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- CN106499765B CN106499765B CN201510560080.0A CN201510560080A CN106499765B CN 106499765 B CN106499765 B CN 106499765B CN 201510560080 A CN201510560080 A CN 201510560080A CN 106499765 B CN106499765 B CN 106499765B
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Abstract
The present invention relates to a kind of cylinders.The cylinder of one side includes: outer cylinder according to the present invention；Inner cylinder is contained in above-mentioned outer cylinder；Main shaft guiding element is inserted into above-mentioned inner cylinder；Main shaft assembly is guided by above-mentioned main shaft guiding element, and has piston rod；And fixed part, in conjunction with above-mentioned piston rod, wherein fixation portions, the following side of above-mentioned inner cylinder and above-mentioned outer cylinder are combined by joint portion.
Description
Technical field
The embodiment of the present invention is related to a kind of cylinder (Gas cylinder)
Background technique
In general, cylinder is suitable for the height adjustment device of chair.
As the Korean Patent Publication No. 10-1308675 (grant date: on 09 09th, 2013) of the prior art,
Disclose a kind of cylinder for being able to extend length.
Above-mentioned cylinder includes: tank body, is hollow type；Cylinder body is inserted in above-mentioned tank body, is being incorporated into above-mentioned tank body
The sleeve member (Bushing member) of upside is slided, and the piston rod for the downside for being supported in tank body is made to advance or retreat,
So as to adjustment length；Button makes to be provided in above-mentioned cylinder body, valve valve pin movement, to make by gas pressure
State piston rod advance.In the outside of above-mentioned tank body, outer pot is to wrap the combination of shape and state of tank body.
Also, the downside welding of above-mentioned tank body is incorporated into the inner lower of outer pot, and upside is formed with fixing groove.And
And the upside of sleeve member forms exposed surface, exposed surface is inserted between outer pot and tank body.
According to existing cylinder as described above, there are problems that following two.
Firstly, in general, the downside of tank body and outer pot weld in the state of, in order to remove the system of said external tank
The remaining foreign matter of institute, oil etc., can carry out coating to outer pot after wash during standby.
But in the state that above-mentioned tank body and said external tank combine, the upper lateral part of tank body and outer pot forms gap,
Therefore in washing procedure and coating process, cleaning solution or the liquid for coating can be flowed between above-mentioned gap, and
When cleaning solution or liquid for coating do not prepare cylinder in the state of completely removing in gap, there are the outside of tank body or
The problem of inner face of person's outer pot gets rusty easily.
Secondly, with sleeve member insertion be incorporated between above-mentioned tank body and outer pot, therefore manufacture sleeve member or
When outer pot, it may be caused due to tolerance between the exposed surface of sleeve member and the outer peripheral surface of tank body or sleeve member
Gap is generated between exposed surface and the inner peripheral surface of outer pot.At this point, when cylinder body other than the load by axis direction, also by with
In the case where the load of axis direction crisscross (horizontal direction), above-mentioned tank body or sleeve member can move in the horizontal direction and
The shaking of horizontal direction occurs, to there are problems that occurring to generate noise by the impact or friction of tank body and outer pot.
Also, in the case that tank body and sleeve member shake, it is possible to above-mentioned tank body and said external can occur
The crackle of the welding position of tank or breakage.
Also, after the following side of tank body and outer pot are soldered, fixed plate is also welded in outer pot, therefore exist
The problem of increasing welding sequence.
Summary of the invention
The object of the present invention is to provide a kind of cylinder, which can prevent the rolling of the horizontal direction of main shaft assembly
It is dynamic, and can prevent inner barrel and outer barrel from getting rusty.
The cylinder of one side according to the present invention, comprising: outer cylinder；Inner cylinder is contained in above-mentioned outer cylinder；Main shaft guiding element is inserted
Enter to above-mentioned inner cylinder；Main shaft assembly is guided by above-mentioned main shaft guiding element, and has piston rod；And fixed part, and it is upper
State piston rod combination, wherein fixation portions, the following side of above-mentioned inner cylinder and above-mentioned outer cylinder are combined by joint portion.
Also, the inner peripheral surface of the bottom surface or side of fixation portions, the bottom surface of above-mentioned inner cylinder and above-mentioned outer cylinder passes through
Joint portion and combine, and above-mentioned joint portion be pass through welding formed weld part.
Also, some or all following sides for being inserted into above-mentioned inner cylinder of fixation portions.
Also, the outer diameter of fixation portions can be small compared with above-mentioned outer cylinder internal diameter, and the outer diameter of fixation portions can be more above-mentioned interior
The internal diameter of cylinder is big and small compared with the outer diameter of above-mentioned inner cylinder.
Also, the inner peripheral surface of the upper lateral part of above-mentioned inner cylinder and above-mentioned outer cylinder can be tied and by welding the weld part formed
It closes.
Also, the upper lateral part of above-mentioned inner cylinder is formed with curved bending section outward, above-mentioned bending section with above-mentioned outer cylinder
Upper side end position separately, combined with the inner peripheral surface of above-mentioned outer cylinder by welding, and above-mentioned main shaft guiding element can cover
It is formed in the weld part of above-mentioned bending section.
Also, above-mentioned weld part can the circumferencial direction along above-mentioned outer cylinder, 360 degree of full scopes are formed.
According to proposed invention, the upper lateral part of inner cylinder and following side and outer cylinder solder bond, and as weld part is whole
Formed within the scope of a 360 degree, can prevent in washing procedure or coating process cleaning solution or for coating liquid or
Foreign matter is flowed between above-mentioned inner cylinder and above-mentioned outer cylinder.
Therefore, in the use process of above-mentioned cylinder, can prevent by between above-mentioned inner cylinder and above-mentioned outer cylinder liquid or
Cleaning solution causes inner cylinder or outer cylinder to get rusty.
Also, the fixed part of inner barrel and outer barrel and fixed piston rod can be combined and once welding, therefore be had
The simple advantage of welding sequence.
Also, main shaft assembly at the same time by the power of the power of axis direction and horizontal direction when, can also maintain it is above-mentioned in
The state that cylinder and above-mentioned outer cylinder are fixed, therefore above-mentioned inner cylinder will not be moved relative to above-mentioned outer cylinder.Therefore, in above-mentioned main shaft
In the axis direction moving process of assembly, the shaking phenomenon of above-mentioned inner cylinder can be prevented, and therefore can prevent by inner cylinder shaking or
The collision or friction of person's inner cylinder and above-mentioned outer cylinder and generate noise.
Also, in the axis direction moving process of above-mentioned main shaft assembly, the shaking of above-mentioned inner cylinder can be prevented, and therefore may be used
Prevent the shaking in the seat board portion of above-mentioned main shaft assembly and the chair connecting with above-mentioned main shaft assembly.
Detailed description of the invention
Fig. 1 is the sectional view for illustrating cylinder according to an embodiment of the invention.
Fig. 2 is the sectional view for illustrating column unit according to an embodiment of the invention.
Fig. 3 is the attached drawing for illustrating main shaft guiding element according to an embodiment of the invention.
Fig. 4 is the enlarged drawing of the part A of Fig. 2.
Fig. 5 is to observe the attached drawing of cylinder in X direction in Fig. 2.
Fig. 6 is the enlarged drawing of the part B of Fig. 2.
Fig. 7 is in Fig. 2, along the attached drawing of Y-direction observation cylinder.
Fig. 8 is the sectional view of cylinder according to another embodiment of the present invention.
Fig. 9 is the enlarged drawing of the part A of Fig. 2 of another embodiment according to the present invention.
In the figure, it is marked as
1: cylinder；2: assembling assembly
3: column unit；20: main shaft
24: piston；25: piston rod
30: tank body；40: inner cylinder
50: main shaft guiding element；70,72: weld part.
Specific embodiment
Hereinafter, section Example of the invention will be described in detail by illustrative attached drawing.To each attached drawing
When constituent element assigns appended drawing reference, for identical constituent element, although indicating in different drawings, to impart as far as possible
Identical label.Also, when illustrating the embodiment of the present invention, if it is considered to specifically to relevant known composition or function
It is bright to be possible to influence understanding of embodiments of the invention, detailed description thereof will be omitted.
Fig. 1 is the sectional view for illustrating cylinder according to an embodiment of the invention.
Referring to Fig.1, cylinder 1 according to an embodiment of the invention can include: main shaft assembly 2 and column unit 3.
Above-mentioned main shaft assembly 2 may connect to the seat board portion of chair.
Above-mentioned main shaft assembly 2 can include: main shaft 20；Valve 23 is configured inside above-mentioned main shaft 20；Taper fixing piece
(taper holder) is configured at the upside of above-mentioned valve 23；It is opened and closed pin 21, is connected with above-mentioned valve 23, is changed
The gas flow path of above-mentioned valve 23.
Also, above-mentioned main shaft assembly 2 can include: piston 24；And piston rod 25, it is connected to above-mentioned piston 24.
When the above-mentioned opening and closing pin 21 that operation is connected with above-mentioned valve 23, the gas flow path of above-mentioned valve 23 can be opened
It puts, the gas being stored in above-mentioned main shaft assembly 2 pushes above-mentioned piston 24 by the gas flow path of above-mentioned valve 23, thus
Increase above-mentioned main shaft assembly 2.Also, with the rising of above-mentioned main shaft assembly 2, the seat board portion of chair is also therewith to moving up
It is dynamic；And when releasing the operation of opening and closing pin 21 on mobile position, the gas flow path of above-mentioned valve 23 will be closed, to make seat
Plate portion maintains fixed state.
In the present embodiment, the manner of execution of above-mentioned cylinder 1 can be realized by well known structure, therefore will be omitted to it
Detailed description.
The moving direction (moving up and down direction) of above-mentioned main shaft assembly 2 is known as axis direction in this specification.
Fig. 2 is the sectional view for illustrating column unit according to an embodiment of the invention.
Referring to Fig.1 and Fig. 2, column unit 3 according to an embodiment of the invention include: outer cylinder 30；And inner cylinder 40.
Above-mentioned outer cylinder 30 can include: first part 31, axially diameter is consistent；Second part 32, from above-mentioned first
Part 31 extends downwards, and diameter change axially；Part III 33 prolongs downwards from above-mentioned second part 32
It is long, and axially diameter is consistent.
Wherein, more toward Part III 33, the diameter of above-mentioned second part 32 can be gradually become smaller.Above-mentioned Part III 33 it is straight
Diameter can be small compared with the diameter of above-mentioned first part 31.
Above-mentioned main shaft assembly 3 may also include that fixed part 60, be used to fix above-mentioned piston rod 25.
Above-mentioned inner cylinder 40 can be contained in above-mentioned outer cylinder 30, and its upside can be located at above-mentioned 31 side of first part, and
Lower side can be located at above-mentioned 33 side of Part III.
Above-mentioned column unit 3 may also include that main shaft guiding element 50, be used to guide above-mentioned main shaft 20.
Fig. 3 is the attached drawing for illustrating main shaft guiding element according to an embodiment of the invention.
Referring to Fig. 3, the main shaft guiding element 50 of an embodiment according to the present invention may include head 52 and main part 51.
The diameter on above-mentioned head 52 is formed as big compared with the diameter in aforementioned body portion 51.
Aforementioned body portion 51 can be formed with fine slot 55Also, the upper lateral part in aforementioned body portion 51 can
It is circumferentially formed thereon multiple clamping grooves 53.Each multiple clamping portions (referring to the 44 of Fig. 4) for being configured at above-mentioned inner cylinder 40 can insert
Enter each above-mentioned clamping groove 53.At this point, above-mentioned clamping groove 52 and the above-mentioned fine interval of slot 55 configuration, thus aforementioned body portion 51 can
Configured with clamping flange 54, above-mentioned clamping flange 54 can be used for that above-mentioned each clamping portion (referring to the 44 of Fig. 4) is made to maintain to be connected in
The state of above-mentioned clamping groove 52.
Fig. 4 is the enlarged drawing of the part A of Fig. 2；Fig. 5 is to observe the attached drawing of cylinder in X direction in Fig. 2.
Referring to Fig. 2, Fig. 4 and Fig. 5, in the state that above-mentioned inner cylinder 40 is inserted in above-mentioned outer cylinder 30, above-mentioned inner cylinder 40
Lower end can be in contact or adjacent with above-mentioned Part III 33 with the Part III 33 of above-mentioned outer cylinder 30.
Also, some or all of fixation portions 60 are inserted into above-mentioned inner cylinder 40.As an example, above-mentioned fixation
Portion 60 is inserted into the following side of above-mentioned inner cylinder 40.
In the state that fixation portions 60 some or all are inserted in above-mentioned inner cylinder 40, the bottom of above-mentioned inner cylinder 40
The inner peripheral surface of face and fixation portions 60 and above-mentioned outer cylinder can be by being combined by welding the weld part 70 formed.In the present invention,
Above-mentioned weld part 70 is alternatively referred to as joint portionIt is used to make the bottom surface of Chinese fir inner cylinder 40 and fixation portions 60 with
And the inner circumferential face bonding of above-mentioned outer cylinder 30.
I.e. above-mentioned inner cylinder 40 and above-mentioned outer cylinder 30 and fixation portions 60 pass through once welding and achieve that combination.
A part of fixation portions 60 is inserted in the state of above-mentioned inner cylinder 40, and above-mentioned weld part 70 can make above-mentioned inner cylinder
The side (or outer peripheral surface) of 40 bottom surface, the inner peripheral surface of above-mentioned outer cylinder 30 and fixation portions 60 combines.
Fixation portions 60 is entirely insertable in the state of above-mentioned inner cylinder 40, and above-mentioned weld part 70 can make above-mentioned inner cylinder 40
The bottom surface of bottom surface, the inner peripheral surface of above-mentioned outer cylinder 30 and fixation portions 60 combines.
However, fixation portions 60 is entirely insertable in the state of above-mentioned inner cylinder 40, the bottom surface of fixation portions 60 can be with
The bottom surface of above-mentioned inner cylinder 40 is located at same horizontal line, or can be located at position similar in the bottom surface with above-mentioned inner cylinder 40.
If fixation portions 60 is entirely insertable in the state of above-mentioned inner cylinder 40, and the bottom surface of fixation portions 60 is located at
In the case where position similar in bottom surface with above-mentioned inner cylinder 40, above-mentioned weld part 70 not only connect fixation portions 60 bottom surface and
The inner peripheral surface of above-mentioned inner cylinder 40 can also connect the bottom surface of above-mentioned inner cylinder 40 and the inner peripheral surface of above-mentioned outer cylinder 30.
At this point, above-mentioned weld part 70 can also make the bottom surface of above-mentioned inner cylinder 40, the inner peripheral surface of above-mentioned outer cylinder 30 and above-mentioned solid
The bottom surface for determining portion 60 combines.
According to the present embodiment, above-mentioned inner cylinder 40 and above-mentioned outer cylinder 30 and fixation portions 60 can be by once welding
In conjunction with, therefore have the advantages that simplified welding sequence.
Also, according to the present embodiment, since above-mentioned inner cylinder 40 is welded in the consistent Part III 33 of axially diameter, because
This has the advantages that the binding force by weld part 70 can be made maximized.
Circumferentially continuous formation of the above-mentioned weld part 70 along above-mentioned outer cylinder 30.On being formed i.e. within the scope of entire 360 degree
State weld part 70.
Therefore, according to the present embodiment, as above-mentioned weld part 70 is formed within the scope of entire 360 degree, in washing procedure or
In person's coating process, can prevent cleaning solution or liquid for coating or foreign matter from above-mentioned inner cylinder 40 and above-mentioned outer cylinder 30 it
Between flow into.
Therefore, it in the use process of above-mentioned cylinder, can prevent due to residual between above-mentioned inner cylinder 40 and above-mentioned outer cylinder 30
There are liquid perhaps cleaning solution thus the phenomenon that making inner cylinder 40 or outer cylinder 30 get rusty.
Fig. 6 is the enlarged drawing of the part B of Fig. 2；Fig. 7 is in Fig. 2, along the attached drawing of Y-direction observation cylinder.However, in Fig. 7
In main shaft guiding element is omitted.
Referring to Fig. 2, Fig. 6 and Fig. 7, the upper end of above-mentioned inner cylinder 40 can outside lateral bend.The upside of i.e. above-mentioned inner cylinder 40
It may be configured with bending section 42.Also, in the state that above-mentioned inner cylinder 40 is inserted in above-mentioned outer cylinder 30, above-mentioned bending section 42 can with it is upper
The inner peripheral surface for stating the first part 31 of outer cylinder 30 be in contact or be located at its similar in position.
Since above-mentioned bending section 42 is in contact or is located at and its phase with the inner peripheral surface of the first part 31 of above-mentioned outer cylinder 30
Close position, therefore a part of above-mentioned inner cylinder 40 can be with above-mentioned first part 31 separately.
At this point, the end of above-mentioned bending section 42 can be with the upper side end of above-mentioned outer cylinder 30 separately.I.e. above-mentioned inner cylinder 40
It is all inserted in the state of above-mentioned outer cylinder 30, the upper side end of the more above-mentioned outer cylinder 30 of the upper side end of above-mentioned inner cylinder 40 is low.
This is the space for carrying out solder bond in order to ensure the inner peripheral surface to above-mentioned bending section 42 and above-mentioned inner cylinder 40.
Also, the inner peripheral surface of above-mentioned bending section 42 and above-mentioned outer cylinder 30 can be by being combined by welding the weld part 72 formed.
Above-mentioned weld part 72 can be along the circumferentially continuous formation of above-mentioned outer cylinder 30.Formed within the scope of entire 360 degree
Above-mentioned weld part 72.
Therefore, according to the present embodiment, as above-mentioned weld part 72 is formed within the scope of entire 360 degree, in washing procedure or
In person's coating process, can prevent cleaning solution or liquid for coating or foreign matter from above-mentioned inner cylinder 40 and above-mentioned outer cylinder 30 it
Between flow into.
Therefore, it in the use process of above-mentioned cylinder, can prevent due to residual between above-mentioned inner cylinder 40 and above-mentioned outer cylinder 30
There are liquid perhaps cleaning solution thus the phenomenon that making inner cylinder 40 or outer cylinder 30 get rusty.
Also, above-mentioned outer cylinder 30 and inner cylinder 40 are combined by welding, therefore are existed without in above-mentioned outer cylinder 30 and above-mentioned
Inner cylinder 40 forms the advantages of integrated structure for combining above-mentioned outer cylinder 30 and inner cylinder 40.
Also, since above-mentioned inner cylinder 40 is welded in the consistent first part 31 of axially diameter, having can make
By the maximized advantage of the binding force of weld part 72.
In addition, the main part 51 of above-mentioned main shaft guiding element 50 can be inserted into above-mentioned inner cylinder 30 from the upside of above-mentioned inner cylinder 30.And
And the above-mentioned mountable upper end in above-mentioned outer cylinder 30 in head 52.
At this point, above-mentioned inner cylinder 40 is formed in the circumferential direction in order to which above-mentioned main shaft guiding element 50 is detached from from above-mentioned inner cylinder 30
Multiple clamping protrusions 44, and each above-mentioned multiple clamping protrusions 44 can be inserted into the multiple cards for being formed in aforementioned body portion 51 respectively
Access slot 53.
The comparable bottom surface in from above-mentioned head 52 of the length of the axis direction of the first part 31 of above-mentioned outer cylinder 30 is to above-mentioned
The distance of the clamping flange 54 of main part 51 is short.
As above-mentioned head 52 is mounted on the upper end of above-mentioned outer cylinder 30, above-mentioned head 52 can cover above-mentioned weld part 72.
It is therefore possible to prevent above-mentioned weld part 72 exposes to outside.
According to the present embodiment, the upper side and lower side of above-mentioned inner cylinder 40 is incorporated into outer cylinder 30 by weld part 70,72.Therefore,
Outside load of the above-mentioned main shaft assembly 2 by axis direction also by the load of horizontal direction in the case where, above-mentioned 40 He of inner cylinder
Above-mentioned outer cylinder 30 still is able to maintain fixed state, therefore above-mentioned inner cylinder 40 will not be moved relative to above-mentioned outer cylinder 30, from
And the shaking phenomenon of in above-mentioned main shaft assembly 2 axially moving process, above-mentioned inner cylinder 40 can be prevented, and thus can prevent
Only by the shaking of inner cylinder 40 or inner cylinder 40 bending section and above-mentioned outer cylinder 30 inner peripheral surface collision or friction and generate
Noise.
Also, in above-mentioned main shaft assembly 2 axially moving process, the shaking of above-mentioned inner cylinder 40 can be prevented, and because
This can prevent the shaking in the seat board portion of above-mentioned main shaft assembly 2 and the chair connecting with above-mentioned main shaft assembly 2.
Fig. 8 is the sectional view of cylinder according to another embodiment of the present invention.
In the present embodiment, other than the form of outer cylinder is different, rest part is identical as embodiment before.Cause
This, will only be illustrated the characteristic of the present embodiment below, and to part identical with embodiment before, it will be before continuing to use
The explanation and appended drawing reference of embodiment.
Referring to Fig. 3, Fig. 6 and Fig. 8, according to the outer cylinder 30 of the present embodiment can include: first part 34, it is axially straight
Diameter is consistent；Second part 32 extends downwards from above-mentioned first part 34, and axially diameter change；Part III 33,
Extend downwards from above-mentioned second part 32, and axially diameter is consistent.
The comparable main part 51 in from above-mentioned main shaft guiding element of the length of the axis direction of above-mentioned first part 34 is convex to being clamped
The length of edge 54 is long.
It also can get effect identical with embodiment before according to the present embodiment.
Fig. 9 is the enlarged drawing of the part A of Fig. 2 of another embodiment according to the present invention.
In the present embodiment, other than the relative position of fixed part and outer cylinder is different, rest part with reality before
It is identical to apply example.Therefore, only the characteristic of the present embodiment will be illustrated below.
Referring to Fig. 9, the outer diameter of the fixed part 60 of the present embodiment can be big compared to the internal diameter of above-mentioned inner cylinder 40, and compared to
The outer diameter of above-mentioned inner cylinder 40 is small.
Also, the internal diameter of the comparable Part III 33 in above-mentioned outer cylinder 30 of the outer diameter of fixation portions 60 is small.
Therefore, according to the present embodiment, above-mentioned inner cylinder 40 is mounted on the upside of fixation portions 60.Also, in above-mentioned fixation
Space is formed between the outer peripheral surface in portion 60 and the inner peripheral surface of above-mentioned outer cylinder 30, weld part 73 is located at the space.
Therefore, by weld the weld part 73 that is formed can make fixation portions 60 side (or outer peripheral surface) and above-mentioned inner cylinder
The inner circumferential face bonding of 40 bottom surface and above-mentioned outer cylinder 30.
Obviously, according to the size of weld part 73, the bottom surface of fixation portions 60 can also be formed with above-mentioned weld part 73.
In the above-described embodiments, the weld part 70 that the following side of inner cylinder 40 can be incorporated into outer cylinder 30 is known as the first welding
Portion, and the weld part 72 that the upper lateral part of inner cylinder 40 is incorporated into outer cylinder 30 is known as the second weld part.
In above-described embodiment, although the case where axially being changed with the diameter of outer cylinder 30 is illustrated, with this
Differently, i.e., under the diameter of outer cylinder 30 axially unanimous circumstances can also equally applicable the present embodiment content.
More than, cannot because of by all constituent elements for constituting the embodiment of the present invention be combined into one or with combine act
Mode be illustrated, be considered as that present invention is limited only to this.As long as i.e. within the scope of the purpose of the present invention, optionally by
In all constituent elements more than one in conjunction with and act.Also, it is above to be remembered without especially opposite record
The terms such as the " comprising " of load, " composition " or " having " simply mean to corresponding constituent element and exist, but other compositions are not precluded and want
Element should be interpreted that and may also include other constituent elements.In the case where no other restrictions, including it is technical or scientific
All terms of term, the meaning generally understood with those skilled in the art.It is normal such as the term defined in dictionary
The term used, the mode that the meaning of the article of Ying Yiyu the relevant technologies is consistent explain, unknown determination in the present invention
In the case where justice, it cannot be explained with excessively abnormal or exaggeration the meaning.
Above explanation, which is merely exemplary, explains technical idea of the invention, and those skilled in the art can be not
It is detached from the range of intrinsic propesties of the invention, carries out a variety of modifications and deformation.Therefore, disclosed embodiment of this invention portion
Merely to the present invention will be described, rather than in order to limit technical idea of the invention, i.e., technical idea of the invention is simultaneously
It is not limited only to such embodiment.Protection scope of the present invention should be determined with claims, and should be explained of the invention
Protection scope further includes and all technical ideas in its equivalents.
Claims (5)
1. a kind of cylinder, wherein the cylinder includes:
Outer cylinder；
Inner cylinder is contained in the outer cylinder；
Main shaft guiding element is inserted into the inner cylinder；
Main shaft assembly is guided by the main shaft guiding element, and has piston rod；And
Fixed part, in conjunction with the piston rod,
Wherein, the inner peripheral surface of the bottom surface or side of the fixed part, the bottom surface of the inner cylinder and the outer cylinder passes through by welding
It connects the first weld part to be formed and combines；The inner peripheral surface of the upper lateral part of the inner cylinder and the outer cylinder passes through by welding formed the
Two weld parts and combine.
2. cylinder according to claim 1, wherein
Some or all following sides for being inserted in above-mentioned inner cylinder of the fixed part.
3. cylinder according to claim 1, wherein
The outer diameter of the fixed part is small compared with the outer cylinder internal diameter,
The outer diameter of the fixed part is big compared with the internal diameter of the inner cylinder, and small compared with the outer diameter of the inner cylinder.
4. cylinder according to claim 1, wherein
The upper lateral part of the inner cylinder is formed with curved bending section outward,
The bending section passes through welding in the position with the upper side end of the outer cylinder separately, with the inner peripheral surface of the outer cylinder
In conjunction with,
The main shaft guiding element covering is formed in the second weld part of the bending section.
5. cylinder according to claim 1, wherein
First weld part and second weld part are in the circumferencial direction along the outer cylinder, 360 degree of full scope shapes
At.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510560080.0A CN106499765B (en) | 2015-09-06 | 2015-09-06 | Cylinder |
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|---|---|---|---|
| CN201510560080.0A CN106499765B (en) | 2015-09-06 | 2015-09-06 | Cylinder |
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| CN106499765B true CN106499765B (en) | 2019-05-10 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2231057Y (en) * | 1995-05-12 | 1996-07-17 | 李义仁 | Closed lifter |
| US5702083A (en) * | 1996-04-17 | 1997-12-30 | Lai; Shiang-Hwey | Pneumatic cylinder of a pneumatic lever-lift chair, and its assembly process |
| CN103561612A (en) * | 2011-04-29 | 2014-02-05 | 株式会社三弘社 | Column unit for chair |
| CN203986989U (en) * | 2014-08-12 | 2014-12-10 | 青岛三弘精密器械有限公司 | A kind of seat air pressure rod |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0630486Y2 (en) * | 1987-01-09 | 1994-08-17 | 株式会社ユニシアジェックス | Shock absorber for suspension system |
| KR101308675B1 (en) * | 2012-01-02 | 2013-09-13 | 주식회사 한국가스스프링 | a gas cylinder |
-
2015
- 2015-09-06 CN CN201510560080.0A patent/CN106499765B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2231057Y (en) * | 1995-05-12 | 1996-07-17 | 李义仁 | Closed lifter |
| US5702083A (en) * | 1996-04-17 | 1997-12-30 | Lai; Shiang-Hwey | Pneumatic cylinder of a pneumatic lever-lift chair, and its assembly process |
| CN103561612A (en) * | 2011-04-29 | 2014-02-05 | 株式会社三弘社 | Column unit for chair |
| CN203986989U (en) * | 2014-08-12 | 2014-12-10 | 青岛三弘精密器械有限公司 | A kind of seat air pressure rod |
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| Publication number | Publication date |
|---|---|
| CN106499765A (en) | 2017-03-15 |
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