CN204025648U - Small-sized oil hydraulic cylinder piston assembly - Google Patents
Small-sized oil hydraulic cylinder piston assembly Download PDFInfo
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- CN204025648U CN204025648U CN201420448163.1U CN201420448163U CN204025648U CN 204025648 U CN204025648 U CN 204025648U CN 201420448163 U CN201420448163 U CN 201420448163U CN 204025648 U CN204025648 U CN 204025648U
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- annular
- solid
- annular solid
- hydraulic cylinder
- oil hydraulic
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Abstract
The utility model belongs to oil hydraulic cylinder technical field, particularly relates to a kind of small-sized oil hydraulic cylinder piston assembly.It solve the technical problems such as prior art design is unreasonable.Comprise axial centre and there is taper connection blind hole and in the cone body of column, annular piston dish is provided with at the stub end outer wall of cone body, be provided with annular positioning groove between annular piston dish and cone body and be located at the interior O-ring seal in annular positioning groove, spaced large annular solid and little annular solid is provided with at the sidepiece of annular piston dish, seal ring locating slot is formed between large annular solid and little annular solid, annular piston dish is provided with the outer ring seal ring be located in seal ring locating slot, some locating notches are provided with in the one side of the relatively little annular solid of large annular solid, O-ring seal is outside provided with some arc convex, arc convex and locating notch one_to_one corresponding and arc convex are stuck in locating notch.The utility model advantage is: stability and good airproof performance, long service life.
Description
Technical field
The utility model belongs to oil hydraulic cylinder technical field, particularly relates to a kind of small-sized oil hydraulic cylinder piston assembly.
Background technique
Oil hydraulic cylinder is widely used in mechanical manufacturing field, the structure of oil hydraulic cylinder comprises cylinder body and is arranged on the piston in cylinder body, the action drives oil hydraulic cylinder of piston completes and advances accordingly or retrodict, at present, in the oil hydraulic cylinder that some are small-sized, due to small volume, when manufacturing oil hydraulic cylinder, its manufacture difficulty is higher, poor in order to the sealing between small-sized oil hydraulic cylinder piston assembly and cylinder sleeve can be ensured, prevent the pressure loss.For this reason, people have carried out long-term exploration, propose solution miscellaneous.
Such as, Chinese patent literature discloses a kind of oil cylinder of medium-small hydraulic press, [application number: 201120048795.5], comprise cylinder body, piston rod and guide sleeve, wherein, cylinder body is provided with through hole, and one end of through hole is provided with cylinder bottom close-fitting with it, and the other end of through hole is provided with guide sleeve; The seal chamber that cylinder body, cylinder bottom and guide sleeve surround through guide sleeve, and is divided into upper cavity and lower chamber by piston rod, cylinder body is provided with the epicoele filler opening be connected with upper cavity and the cavity of resorption filler opening be connected with lower chamber; The outer wall of cylinder body is provided with outside thread.In the program, oil cylinder is resolved into multiple part, and cylinder body is designed to shape of through holes, adds and only need process single part man-hour, and overall need not carry out processing the difficulty of processing because this reducing oil cylinder, adopt conventional equipment also can complete the processing of oil cylinder smoothly.After all parts machine, then by multiple part overall package.The technique that complicates is simple process, reduces difficulty of processing, saves material.
Above-mentioned scheme improves the subproblem of prior art to a certain extent, but, also at least there is following defect in the program: the structural design of piston is unreasonable, cover rotates with the easy opposing pistons circumference of the cylinder liner packing ring on piston, its sealing is caused to decline, in addition, piston operationally, its poor stability.
Model utility content
The purpose of this utility model is for the problems referred to above, provides a kind of structural design more rationally and the small-sized oil hydraulic cylinder piston assembly of good stability.
For achieving the above object, the utility model have employed following technical proposal: this small-sized oil hydraulic cylinder piston assembly comprises axial centre and has taper connection blind hole and cone body in column, the aperture of taper connection blind hole is positioned at the stub end of cone body, annular piston dish is provided with at the stub end outer wall of cone body, one end of annular piston dish have flush with cone body end coordinate plane, be provided with annular positioning groove between the other end of annular piston dish and cone body and be located at the interior O-ring seal in annular positioning groove, annular deep gouge is provided with at the bottom land of annular positioning groove, the annular protrusion can be located in annular deep gouge is provided with in the one side of interior O-ring seal opposed annular locating slot bottom land, annular piston dish is provided with the notch place that is positioned at annular positioning groove and can prevents this O-ring seal from departing from the disconnecting prevention structure of annular positioning groove, spaced large annular solid and little annular solid is provided with at the sidepiece of annular piston dish, seal ring locating slot is formed between large annular solid and little annular solid, annular piston dish is provided with the outer ring seal ring be located in seal ring locating slot, some locating notches are provided with in the one side of the relatively little annular solid of large annular solid, O-ring seal is outside provided with some arc convex, described arc convex and locating notch one_to_one corresponding and arc convex is stuck in locating notch, large annular solid is away from the one side of little annular solid and annular piston dish one end face, little annular solid forms ring-shaped step away from the one side of large annular solid with the annular piston dish the other end, described large annular solid, little annular solid and annular piston dish are connected as a single entity structure.
In above-mentioned small-sized oil hydraulic cylinder piston assembly, described disconnecting prevention structure comprises some being arranged on annular piston dish and the extension part extended internally, and has the plane matched away from annular protrusion one side with interior O-ring seal in the inner side of each extension part respectively.
In above-mentioned small-sized oil hydraulic cylinder piston assembly, described taper connection blind hole aperture place is provided with connection matching hole, and forms circular orientation face between connection matching hole and taper connection blind hole.
In above-mentioned small-sized oil hydraulic cylinder piston assembly, described connection matching hole hole wall is provided with the flat key groove be obliquely installed.
In above-mentioned small-sized oil hydraulic cylinder piston assembly, described annular piston dish is provided with and coordinates the one side of plane also to have to be connected and the annular plane of inclination be obliquely installed with cooperation plane.
Compared with prior art, the advantage of this small-sized oil hydraulic cylinder piston assembly is: 1, structural design is more reasonable, is provided with interior O-ring seal and can improves join strength in conjunction with annular protrusion and disconnecting prevention structure, ensures the stability run; Be provided with large annular solid and little annular solid can ensure sealing in conjunction with outer ring seal ring, in addition, the structure combined with arc convex and locating notch again can ensure join strength further, stability when ensureing working life and use, practical and be easy to be applied; 2, practical and long service life; 3, structure is simple and be easy to manufacture.
Accompanying drawing explanation
Fig. 1 is the detonation configuration schematic diagram that the utility model provides.
Fig. 2 is A place structure for amplifying schematic diagram in Fig. 1.
Fig. 3 is structural representation after cone body is connected with annular piston dish.
Fig. 4 is another viewing angle constructions schematic diagram of Fig. 3.
Fig. 5 is the interior annular ring structure schematic diagram that the utility model provides.
Fig. 6 is the outer ring ring structure schematic diagram that the utility model provides.
In figure, cone body 1, taper connection blind hole 11, connection matching hole 12, flat key groove 13, annular piston dish 2, annular positioning groove 2a, annular deep gouge 2b, cooperation plane 21, large annular solid 22, locating notch 22a, little annular solid 23, seal ring locating slot 24, ring-shaped step 25, extension part 26, annular plane of inclination 27, interior O-ring seal 3, annular protrusion 3a, outer ring seal ring 4, arc convex 41.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
As shown in figures 1 to 6, this small-sized oil hydraulic cylinder piston assembly comprises axial centre and has taper connection blind hole 11 and cone body 1 in column, the aperture of taper connection blind hole 11 is positioned at the stub end of cone body 1, for the ease of connecting and location, be provided with at taper connection blind hole 11 aperture place and connect matching hole 12, and form circular orientation face between connection matching hole 12 and taper connection blind hole 11, secondly, connect matching hole 12 hole wall and be provided with the flat key groove 13 be obliquely installed.Flat key groove 13 can prevent the present embodiment circumference from rotating.
Annular piston dish 2 is provided with at the stub end outer wall of cone body 1, one end of annular piston dish 2 have flush with cone body 1 end coordinate plane 21, be provided with at annular piston dish 2 and coordinate the one side of plane 21 also to have to be connected and the annular plane of inclination 27 be obliquely installed with cooperation plane 21, be provided with annular positioning groove 2a between the other end of annular piston dish 2 and cone body 1 and be located at the interior O-ring seal 3 in annular positioning groove 2a, annular deep gouge 2b is provided with at the bottom land of annular positioning groove 2a, the annular protrusion 3a that can be located in annular deep gouge 2b is provided with in the one side of interior O-ring seal 3 opposed annular locating slot 2a bottom land.
In order to ensure the stability that the present embodiment runs in cylinder sleeve, annular piston dish 2 is provided with the notch place that is positioned at annular positioning groove 2a and can prevents this O-ring seal 3 from departing from the disconnecting prevention structure of annular positioning groove 2a, concrete, this disconnecting prevention structure comprises some being arranged on annular piston dish 2 and the extension part 26 extended internally, and has the plane matched away from annular protrusion 3a one side with interior O-ring seal 3 in the inner side of each extension part 26 respectively.Annular protrusion 3a can ensure the stability of interior O-ring seal 3 in conjunction with extension part 26.
Spaced large annular solid 22 and little annular solid 23 is provided with at the sidepiece of annular piston dish 2, seal ring locating slot 24 is formed between large annular solid 22 and little annular solid 23, annular piston dish 2 is provided with the outer ring seal ring 4 be located in seal ring locating slot 24, some locating notch 22a are provided with in the one side of the relatively little annular solid 23 of large annular solid 22, O-ring seal outside 4 is provided with some arc convex 41, described arc convex 41 is with locating notch 22a one_to_one corresponding and arc convex 41 is stuck in locating notch 22a, large annular solid 22 is away from the one side of little annular solid 23 and annular piston dish 2 one end face, little annular solid 23 forms ring-shaped step 25 away from the one side of large annular solid 22 with annular piston dish 2 the other end, described large annular solid 22, little annular solid 23 and annular piston dish 2 are connected as a single entity structure.
In the present embodiment, be provided with interior O-ring seal 3 and can improve join strength in conjunction with annular protrusion 3a and disconnecting prevention structure, ensure the stability run; Be provided with large annular solid 22 and little annular solid 23 can ensure sealing in conjunction with outer ring seal ring 4, in addition, then the structure combined with arc convex 41 and locating notch 22a can ensure join strength further, stability when ensureing working life and use.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ cone body 1, taper connection blind hole 11, connection matching hole 12, flat key groove 13, annular piston dish 2, annular positioning groove 2a, annular deep gouge 2b herein, coordinate the term such as plane 21, large annular solid 22, locating notch 22a, little annular solid 23, seal ring locating slot 24, ring-shaped step 25, extension part 26, annular plane of inclination 27, interior O-ring seal 3, annular protrusion 3a, outer ring seal ring 4, arc convex 41, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (5)
1. a small-sized oil hydraulic cylinder piston assembly, it is characterized in that, comprise axial centre and there is taper connection blind hole (11) and in the cone body (1) of column, the aperture of taper connection blind hole (11) is positioned at the stub end of cone body (1), annular piston dish (2) is provided with at the stub end outer wall of cone body (1), one end of annular piston dish (2) have flush with cone body (1) end coordinate plane (21), the interior O-ring seal (3) being provided with annular positioning groove (2a) between the other end of annular piston dish (2) and cone body (1) and being located in annular positioning groove (2a), annular deep gouge (2b) is provided with at the bottom land of annular positioning groove (2a), the annular protrusion (3a) can be located in annular deep gouge (2b) is provided with in the one side of interior O-ring seal (3) opposed annular locating slot (2a) bottom land, annular piston dish (2) is provided with the notch place being positioned at annular positioning groove (2a) and can prevents this O-ring seal (3) from departing from the disconnecting prevention structure of annular positioning groove (2a), spaced large annular solid (22) and little annular solid (23) is provided with at the sidepiece of annular piston dish (2), seal ring locating slot (24) is formed between large annular solid (22) and little annular solid (23), annular piston dish (2) is provided with the outer ring seal ring (4) be located in seal ring locating slot (24), some locating notches (22a) are provided with in the one side of the relatively little annular solid (23) of large annular solid (22), O-ring seal outside (4) is provided with some arc convex (41), described arc convex (41) is with locating notch (22a) one_to_one corresponding and arc convex (41) is stuck in locating notch (22a), large annular solid (22) is away from the one side of little annular solid (23) and annular piston dish (2) end face, little annular solid (23) forms ring-shaped step (25) away from the one side of large annular solid (22) with annular piston dish (2) the other end, described large annular solid (22), little annular solid (23) and annular piston dish (2) are connected as a single entity structure.
2. small-sized oil hydraulic cylinder piston assembly according to claim 1, it is characterized in that, described disconnecting prevention structure comprises some annular piston dishes (2) that is arranged on and goes up and the extension part extended internally (26), has the plane matched away from annular protrusion (3a) one side with interior O-ring seal (3) in the inner side of each extension part (26) respectively.
3. small-sized oil hydraulic cylinder piston assembly according to claim 1 and 2, it is characterized in that, described taper connection blind hole (11) aperture place is provided with and connects matching hole (12), and forms circular orientation face between connection matching hole (12) and taper connection blind hole (11).
4. small-sized oil hydraulic cylinder piston assembly according to claim 3, is characterized in that, described connection matching hole (12) hole wall is provided with the flat key groove (13) be obliquely installed.
5. small-sized oil hydraulic cylinder piston assembly according to claim 1 and 2, it is characterized in that, described annular piston dish (2) be provided with coordinate plane (21) one side also have with cooperation plane (21) be connected and the annular plane of inclination (27) be obliquely installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420448163.1U CN204025648U (en) | 2014-08-10 | 2014-08-10 | Small-sized oil hydraulic cylinder piston assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420448163.1U CN204025648U (en) | 2014-08-10 | 2014-08-10 | Small-sized oil hydraulic cylinder piston assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204025648U true CN204025648U (en) | 2014-12-17 |
Family
ID=52065516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420448163.1U Expired - Fee Related CN204025648U (en) | 2014-08-10 | 2014-08-10 | Small-sized oil hydraulic cylinder piston assembly |
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| Country | Link |
|---|---|
| CN (1) | CN204025648U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106665781A (en) * | 2016-12-30 | 2017-05-17 | 常州市汉华厨具有限公司 | Clamping piece type piston plate |
-
2014
- 2014-08-10 CN CN201420448163.1U patent/CN204025648U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106665781A (en) * | 2016-12-30 | 2017-05-17 | 常州市汉华厨具有限公司 | Clamping piece type piston plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20150810 |
|
| EXPY | Termination of patent right or utility model |