CN206617569U - A kind of hydraulic cushion oil cylinder - Google Patents
A kind of hydraulic cushion oil cylinder Download PDFInfo
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- CN206617569U CN206617569U CN201720379435.0U CN201720379435U CN206617569U CN 206617569 U CN206617569 U CN 206617569U CN 201720379435 U CN201720379435 U CN 201720379435U CN 206617569 U CN206617569 U CN 206617569U
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- piston
- pad
- spring
- socketed
- oil cylinder
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Abstract
The utility model discloses a kind of hydraulic cushion oil cylinder, including gray iron, piston rod, piston and the O-ring seal being socketed on piston, the piston is connected to the one end of the piston rod in cylinder body, and cylinder interior is divided into rod chamber and rodless cavity；The piston is provided with about one oilhole communicated and top surface is provided with the gasket seal for being socketed on the piston rod；The top surface of the O-ring seal is in plane.The utility model by the top surface of O-ring seal by being designed as planar structure, and it is plane-plane contact to make its contact with piston, greatly enhances the stress performance of O-ring seal, is damaged caused by effectively preventing moment stress excessive.
Description
Technical field
The utility model is related to a kind of hydraulic cushion oil cylinder.
Background technology
Hydraulic cushion oil cylinder is widely used in the fields such as hinge, is used as buffer protection structure during opening and closing.Current
The general piston rod by gray iron, piston and connection piston of hydraulic cushion oil cylinder is constituted, and O-ring seal is socketed with piston
Barrier damping oil is played to flow between two chambers that piston separates.The top surface for the O-ring seal being socketed at present on piston leads to
It is in often circular shape, the contact with piston contacts for point one side, when in damping oil press-in piston, O-ring seal is in press-in
It is in close contact in the presence of damping oil with piston.It is O-shaped close because the power that damping oil is pressed into a flash is very big under point-face contact
Some moments of seal top surface and piston contact are caused O-ring seal easily to be pressed quick-fried damage by great impulsive force.
Utility model content
In view of the shortcomings of the prior art, the utility model aims to provide a kind of hydraulic cushion oil cylinder, by by O-ring seal
Top surface be designed as planar structure, it is plane-plane contact to make its contact with piston, greatly enhances the stress performance of O-ring seal,
Damaged caused by effectively preventing moment stress excessive.
To achieve these goals, the utility model is adopted the following technical scheme that：
A kind of hydraulic cushion oil cylinder, including gray iron, piston rod, piston and the O-ring seal being socketed on piston,
The piston is connected to the one end of the piston rod in cylinder body, and cylinder interior is divided into rod chamber and rodless cavity；It is described
Piston is provided with about one oilhole communicated and top surface is provided with the gasket seal for being socketed on the piston rod；The O-ring seal
Top surface is in plane.
Further, height of the height than the O-ring seal for being socketed the depression of O-ring seal is used on the piston
Many 0.05mm.
Further, spring is also included, the spring is in the rod chamber, and one end is connected to the cylinder cap, separately
One end is socketed on a pad, and the pad is connected to corresponding with the pad and exterior seal ring in exterior seal ring, the cylinder body
The bottom of the spacing protrusion of pad and the spacing protrusion of exterior seal ring, the bottom of the pad and the exterior seal ring is respectively equipped with position
Portion is in contact respectively at the spacing protrusion of the pad and the spacing protrusion of exterior seal ring；The spring, pad, exterior seal ring are socketed
On the piston rod.
Further, the top surface of the pad is provided with the protrusion matched with the spring, the other end of the spring
It is socketed on the protrusion.
Further, the bottom surface of the cylinder cap is provided with the groove matched with the spring, and one end of the spring is embedding
Enter in the groove.
Further, the top surface of the piston is provided with annular oil return line.
Further, the externally-located one end of the piston rod is provided with coupler body.
Further, the bottom of the cylinder body is provided with coupler body.
The beneficial effects of the utility model are：By the way that the top surface of O-ring seal is designed as into planar structure, make itself and work
The contact of plug is plane-plane contact, greatly enhances the stress performance of O-ring seal, effectively prevents O-ring seal moment by larger
Upward pressure so as to the face stress of piston contact it is excessive caused by damage.
Brief description of the drawings
Fig. 1 is general structure schematic diagram of the present utility model.
Fig. 2 is that the utility model omits the structural representation after cylinder body；
Fig. 3 is the structural representation of O-ring seal of the present utility model；
Fig. 4 is the combination schematic diagram of O-ring seal of the present utility model and piston；
Fig. 5 is the internal structure schematic diagram of cylinder body of the present utility model；
Fig. 6 is the floor map of piston of the present utility model；
Fig. 7 is the schematic perspective view of piston of the present utility model；
Fig. 8 is the polycrystalline substance schematic diagram of cylinder cap of the present utility model.
Embodiment
Below with reference to accompanying drawing, the utility model will be further described, it is necessary to which explanation, the present embodiment is with this skill
Premised on art scheme, detailed embodiment and specific operating process are given, but protection domain of the present utility model is not
It is limited to the present embodiment.
As Figure 1-3, a kind of hydraulic cushion oil cylinder, including cylinder body 1, cylinder cap 2, piston rod 3, piston 4 and it is socketed in work
O-ring seal 5 on plug 4, the piston 4 is connected to one end in the cylinder body 1 of the piston rod 3 and by part in cylinder body 1
For rod chamber and rodless cavity；The piston 4 is provided with about one oilhole communicated and top surface is provided with and is socketed on the close of the piston rod
Gasket 6；The top surface 51 of the O-ring seal 5 is in plane.
Generally, when piston rod is shunk, the piston is lived under the drive of piston rod to rodless cavity direction
It is dynamic, extruding is produced to damping oil, the buffering of shrinkage direction is realized under the reaction of damping oil, now damping oil can be from piston
In the press-in piston of oilhole 42 of bottom, and backflow after gasket seal 6 is reached through oilhole 43 (and oilhole 42 is directly communicated), it is O-shaped
The effect of sealing ring mainly prevents damping oil from leaking into rod chamber from the both sides of piston.From piston base during due to damping oil
Press-in, and can have certain play space between O-ring seal and piston, therefore O-ring seal can be damped oil from
Pressure jack-up on down, top surface is mutually extruded with piston.
The top surface of traditional O-ring seal is arcuate structure so that the O-ring seal of existing hydraulic cushion oil cylinder is
With point-face mode and piston contact, all extruding forces are all concentrated on the summit of arcuate structure, so that hydraulic cushion oil cylinder
O-ring seal be easy to be pressed quick-fried damage.
By the planar structure designed by the application, the way of contact of O-ring seal and piston is changed to surface-to-surface contact, by
Power face increases, the problem of effectively preventing O-ring seal excessive because of pressure damage.
Further, as shown in figure 4, the height of the depression 41 on the piston for being socketed O-ring seal is more O-shaped than described
The many 0.05mm of height of sealing ring 5.Drawn by inventor's many experiments, 0.05mm O-ring seal play space both can be with
Preferable buffering effect is kept, the play length for needing to compensate can be reduced as small as possible again.And at the angle of actual production
Degree sees that 0.05mm has realizability.
Further, spring 7 is also included, the spring 7 is in the rod chamber, and one end is connected to the cylinder cap 2,
The other end is socketed on a pad 8, and the pad 8 is connected to exterior seal ring 9；As shown in figure 5, the cylinder body 1 in the pad 8
Pad is spacing to protrude 11 and the spacing protrusion 12 of exterior seal ring with being respectively equipped with the corresponding position of exterior seal ring 9, the pad 8
Bottom and the bottom of the exterior seal ring 9 are in contact respectively at the spacing protrusion 11 of the pad and the spacing protrusion 12 of exterior seal ring；
The spring 7, pad 8, exterior seal ring 9 are socketed on the piston rod 3.
By the setting of spring, when piston rod extends, piston it is upward under spring can be compressed, and bullet
The elasticity of spring causes the flexible space of length that piston rod extends, so as to compensate the machine error in actual production.When
When the power for stretching piston rod disappears, piston rod makees contractile motion, and after the squeezing action of piston disappears, spring automatically replies original state,
It is movable toward the direction shunk in the active force lower piston of spring-return original state.Because the degree of spring-return is bigger, the work of generation
Firmly just smaller, then under the resistance collective effect of damping oil, the speed that piston rod shrinks can be increasingly slower, so as to realize piston
The deceleration buffer of bar.Even if piston rod is stretched by a small margin, post-tensioning stretch suddenly disappears, and is also not in that piston rod is quick back
Shrink, cause the situation of the Fast Collision between object.
Further, the top surface of the pad 8 is provided with the protrusion 81 that matches with the spring 7, the spring 7 it is another
One end is socketed on the protrusion 81.As shown in figure 8, the bottom surface of the cylinder cap 2 is provided with the groove 21 matched with the spring, institute
The one end for stating spring is embedded in the groove.The fixation of spring is all easy in above-mentioned design.
Further, as shown in fig. 7, the top surface of the piston 4 is provided with annular oil return line 44.The design of annular oil return line is just
The backflow after gasket seal is reached in damping oil.
Further, the externally-located one end of the piston rod 3 is provided with coupler body 31.The bottom of the cylinder body 1 also is provided with hook
Body 13.The installation and removal of oil cylinder are easy in the design of coupler body.
For those skilled in the art, technical scheme that can be more than and design, make various corresponding
Change and deform, and all these change and deformation should be construed as being included in the utility model scope of the claims it
It is interior.
Claims (8)
1. a kind of hydraulic cushion oil cylinder, including gray iron, piston rod, piston and the O-ring seal being socketed on piston, institute
State piston and be connected to the one end of the piston rod in cylinder body, and cylinder interior is divided into rod chamber and rodless cavity；The work
Plug is provided with about one oilhole communicated and top surface is provided with the gasket seal for being socketed on the piston rod；Characterized in that, described O-shaped
The top surface of sealing ring is in plane.
2. hydraulic cushion oil cylinder according to claim 1, it is characterised in that be used to be socketed O-ring seal on the piston
Depression height than the O-ring seal height more than 0.05mm.
3. hydraulic cushion oil cylinder according to claim 1, it is characterised in that also include spring, the spring is located at institute
State in rod chamber, one end is connected to the cylinder cap, the other end is socketed on a pad, and the pad is connected to exterior seal ring, described
The spacing protrusion of pad and the spacing protrusion of exterior seal ring are respectively equipped with cylinder body on position corresponding with the pad and exterior seal ring,
The bottom of the pad and the bottom of the exterior seal ring are respectively at the spacing protrusion of the pad and the spacing protrusion phase of exterior seal ring
Contact；The spring, pad, exterior seal ring are socketed on the piston rod.
4. hydraulic cushion oil cylinder according to claim 1, it is characterised in that the top surface of the piston is returned provided with annular oil
Road.
5. hydraulic cushion oil cylinder according to claim 3, it is characterised in that the top surface of the pad is provided with and the spring
The protrusion matched, the other end of the spring is socketed on the protrusion.
6. hydraulic cushion oil cylinder according to claim 3, it is characterised in that the bottom surface of the cylinder cap is provided with and the spring
The groove matched, one end of the spring is embedded in the groove.
7. hydraulic cushion oil cylinder according to claim 1, it is characterised in that the externally-located one end of the piston rod is provided with
Coupler body.
8. hydraulic cushion oil cylinder according to claim 1, it is characterised in that the bottom of the cylinder body is provided with coupler body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720379435.0U CN206617569U (en) | 2017-04-11 | 2017-04-11 | A kind of hydraulic cushion oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720379435.0U CN206617569U (en) | 2017-04-11 | 2017-04-11 | A kind of hydraulic cushion oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206617569U true CN206617569U (en) | 2017-11-07 |
Family
ID=60236219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720379435.0U Active CN206617569U (en) | 2017-04-11 | 2017-04-11 | A kind of hydraulic cushion oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206617569U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285179A (en) * | 2019-06-10 | 2019-09-27 | 广东亚当斯金属精密制造有限公司 | A kind of full buffer low-angle stretching buffer |
-
2017
- 2017-04-11 CN CN201720379435.0U patent/CN206617569U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285179A (en) * | 2019-06-10 | 2019-09-27 | 广东亚当斯金属精密制造有限公司 | A kind of full buffer low-angle stretching buffer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 522000 dingzhaipan Industrial Zone, Tadong village, Baita Town, Jiedong District, Jieyang City, Guangdong Province Patentee after: JIEYANG JUNSHENG PRECISION HARDWARE INDUSTRIAL CO.,LTD. Address before: 522000 Industrial Zone, Dedong village, Yuecheng Town, Lancheng District, Jieyang City, Guangdong Province Patentee before: JIEYANG JUNSHENG PRECISION HARDWARE INDUSTRIAL CO.,LTD. |