CN219081981U - Cylinder with long service life - Google Patents
Cylinder with long service life Download PDFInfo
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- CN219081981U CN219081981U CN202320238237.8U CN202320238237U CN219081981U CN 219081981 U CN219081981 U CN 219081981U CN 202320238237 U CN202320238237 U CN 202320238237U CN 219081981 U CN219081981 U CN 219081981U
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Abstract
The utility model discloses a long-service-life cylinder which comprises a cylinder body, a piston, a first O-shaped ring, a second O-shaped ring, pushing parts and elastic parts, wherein a storage cavity and an oil outlet communicated with the storage cavity are formed in the piston, the first O-shaped ring and the second O-shaped ring are arranged at two sides of the oil outlet at intervals along the axial direction of the piston, at least one part of the pushing parts is positioned in the storage cavity, the pushing parts can move along the extending direction of the storage cavity, a first abutting part is formed in the piston, a second abutting part is formed in the pushing parts, two ends of each elastic part are abutted against the first abutting part and the second abutting part respectively, and the elastic parts are used for providing elastic force towards the pushing parts so that the pushing parts push lubricant stored in the storage cavity out of the oil outlet. The cylinder provided by the embodiment of the utility model has the advantages of long service life and the like.
Description
Technical Field
The utility model relates to the technical field of air cylinders, in particular to an air cylinder with long service life.
Background
The power source of the semiconductor valve is mostly a cylinder, and a piston in the cylinder is generally sealed by extrusion of an O-shaped rubber sealing ring and the inner wall of the cylinder. In the related art, two pistons of O-shaped rubber sealing rings are generally adopted for sealing, the two O-shaped rubber sealing rings are arranged at intervals along the axial direction of the piston, a lubricant is injected into a space between the two O-shaped rubber sealing rings in advance, and the lubricant forms an oil film on the inner wall of a cylinder body so as to reduce the friction force between the O-shaped rubber sealing rings and the inner wall of the cylinder body, thereby reducing the abrasion degree of the O-shaped rubber sealing rings and prolonging the service life of the cylinder. However, in the actual use process, the lubricant in the two O-shaped rubber sealing rings can flow out and be pushed to two ends of the inner wall of the cylinder by the piston, so that the lubricating effect of the inner wall of the cylinder is not ideal, the service life of the O-shaped rubber sealing rings is rapidly reduced, and the service life of the cylinder is lower.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems in the related art to some extent. To this end, embodiments of the present utility model provide a cylinder with a long service life.
The cylinder comprises a cylinder body, a piston, a first O-shaped ring, a second O-shaped ring, a pushing piece and an elastic piece, wherein the piston is arranged in the cylinder body and can move along the axial direction of the cylinder body, a storage cavity and an oil outlet communicated with the storage cavity are formed in the piston, and the oil outlet is positioned on the peripheral surface of the piston; the first O-shaped ring and the second O-shaped ring are arranged at two sides of the oil outlet at intervals along the axial direction of the piston; at least one part of the pushing piece is positioned in the storage cavity, the pushing piece can move along the extending direction of the storage cavity, and the pushing piece is in sealing fit with the inner wall of the storage cavity;
the piston is provided with a first stopping part, the pushing part is provided with a second stopping part, two ends of the elastic part are respectively stopped against the first stopping part and the second stopping part, and the elastic part is used for providing an elastic force towards the pushing part so that the pushing part pushes the lubricant stored in the storage cavity out of the oil outlet.
In some embodiments, the piston has an opening in communication with the storage cavity, the cylinder further includes a cover, the cover is detachably mounted on the opening, the pushing member and the elastic member are both disposed in the storage cavity, the elastic member is disposed between the cover and the pushing member, and the first stopping portion is disposed on the cover.
In some embodiments, the reservoir extends in an axial direction of the piston, and the opening is provided on an end face of the piston.
In some embodiments, the piston further has a first flow passage, the extending direction of the first flow passage is perpendicular to the extending direction of the storage cavity, the inlet end of the first flow passage is communicated with the storage cavity, and the outlet end of the first flow passage forms the oil outlet.
In some embodiments, the storage cavity is circular in cross-section; and/or the cross section of the first flow channel is circular.
In some embodiments, the cover has a first end surface and a second end surface opposite to each other in an axial direction of the piston, the second end surface being disposed closer to the elastic member than the first end surface, the second end surface forming the first abutment;
the pushing piece is provided with a third end face and a fourth end face which are opposite to each other along the axial direction of the piston, the third end face is arranged closer to the elastic piece than the fourth end face, and the third end face forms the second abutting part.
In some embodiments, the resilient member is a spring.
In some embodiments, the third end face is provided with a protrusion, the protrusion is convexly arranged along the axial direction of the piston towards the direction close to the opening, and a part of the elastic piece is sleeved on the protrusion.
In some embodiments, the outer circumferential surface of the piston is further provided with a first mounting groove and a second mounting groove, the first mounting groove and the second mounting groove are arranged on two sides of the oil outlet along the axial direction of the piston at intervals, one part of the first O-shaped ring is arranged in the first mounting groove, the other part of the first O-shaped ring is propped against the inner wall of the cylinder body, one part of the second O-shaped ring is arranged in the second mounting groove, and the other part of the second O-shaped ring is propped against the inner wall of the cylinder body.
In the use process of the cylinder provided by the embodiment of the utility model, the lubricant (for example, lubricating grease) is added into the storage cavity in advance, and when the piston cylinder moves, the lubricant in the sealing cavity flows out of the sealing cavity through gaps between the first O-shaped ring and the second O-shaped ring and the inner wall of the cylinder body, so that the lubricant in the sealing cavity is lost. At this time, the elastic piece can push the pushing piece to push the lubricant in the storage cavity, so that the lubricant enters the sealing cavity through the oil outlet to compensate the lost lubricant, so that the lubricant forms an oil film on the inner wall of the cylinder body for a long time, friction force generated between the first O-shaped ring and the inner wall of the cylinder body and between the second O-shaped ring and the inner wall of the cylinder body is reduced, the phenomenon that the service lives of the O-shaped rings are rapidly reduced due to the loss of the lubricant between the two O-shaped rings can be effectively avoided, and compared with the related art, the service lives of the first O-shaped ring and the second O-shaped ring are greatly prolonged, and therefore the service life of the cylinder is greatly prolonged.
Therefore, the cylinder provided by the embodiment of the utility model has the advantages of long service life and the like.
Drawings
Fig. 1 is a perspective cross-sectional view of a cylinder according to an embodiment of the present utility model.
Fig. 2 is a front cross-sectional view of a cylinder according to an embodiment of the present utility model.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Reference numerals:
a cylinder 1;
a piston 2; a storage chamber 201; an oil outlet 202; a first flow channel 204; a third end face 205; a protrusion 2051; a fourth end face 206; a second stopper 207; a first mounting groove 208; a second mounting groove 209;
a first O-ring 3;
a second O-ring 4;
a pushing member 5;
an elastic member 6;
a cover 7; a first abutment 701; a first end surface 702; a second end face 703;
sealing the cavity 8.
Detailed Description
Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
The technical solutions of the present application are described in detail below with reference to the accompanying drawings.
The cylinder comprises a cylinder body 1, a piston 2, a first O-shaped ring 3, a second O-shaped ring 4, a pushing piece 5 and an elastic piece 6. The piston 2 is arranged in the cylinder body 1 and can move along the axial direction of the cylinder body 1, the piston 2 is provided with a storage cavity 201 and an oil outlet 202 communicated with the storage cavity 201, the oil outlet 202 is positioned on the outer peripheral surface of the piston 2, and the first O-shaped ring 3 and the second O-shaped ring 4 are arranged on two sides of the oil outlet 202 at intervals along the axial direction of the piston 2. At least a part of the pushing piece 5 is positioned in the storage cavity 201, the pushing piece 5 is movable along the extending direction of the storage cavity 201, and the pushing piece 5 is in sealing fit with the inner wall of the storage cavity 201.
The piston 2 has a first stopping portion 701, the pushing member 5 has a second stopping portion 207, two ends of the elastic member 6 are respectively stopped against the first stopping portion 701 and the second stopping portion 207, and the elastic member 6 is configured to provide an elastic force towards the pushing member 5, so that the pushing member 5 pushes the lubricant stored in the storage cavity 201 out of the oil outlet 202.
In order to make the technical solution of the present application easier to understand, the technical solution of the present application will be further described below by taking an example in which the axial direction of the cylinder 1 coincides with the left-right direction, wherein the left-right direction is shown in fig. 1 to 3.
As shown in fig. 1 to 3, the piston 2 is located in the cylinder 1, the axis of the piston 2 coincides with the axis of the cylinder 1, a certain gap is provided between the outer peripheral surface of the piston 2 and the inner wall of the cylinder 1, and the piston 2 is movable in the left-right direction. The first O-shaped ring 3 and the second O-shaped ring 4 are arranged on two sides of the oil outlet 202 at intervals along the left-right direction, the first O-shaped ring 3 is sleeved on the piston 2, the inner side of the first O-shaped ring 3 is connected with the piston 2, and the outer side of the first O-shaped ring 3 is elastically stopped against the inner wall of the cylinder body 1. The second O-shaped ring 4 is sleeved on the piston 2, the inner side of the second O-shaped ring 4 is connected with the piston 2, and the outer side of the second O-shaped ring 4 is elastically stopped against the inner wall of the cylinder body 1. The first O-ring 3, the piston 2, the second O-ring 4 and the cylinder body 1 define a sealing cavity 8 therebetween, and the oil outlet 202 is communicated with the sealing cavity 8 so that the lubricant stored in the storage cavity 201 enters the sealing cavity 8 through the oil outlet 202.
Specifically, in the cylinder according to the embodiment of the present utility model, during use, a lubricant (e.g., grease) is previously added into the storage chamber 201, and when the piston 2 moves in the left-right direction, the lubricant in the seal chamber 8 flows out of the seal chamber 8 through the gaps between the first O-ring 3 and the second O-ring 4 and the inner wall of the cylinder body 1, thereby causing the lubricant in the seal chamber 8 to be lost. At this time, the elastic member 6 will push the pushing member 5, so that the pushing member 5 pushes the lubricant in the storage cavity 201, and the lubricant enters the sealing cavity 8 through the oil outlet 202 to compensate the lost lubricant, so that the lubricant forms an oil film on the inner wall of the cylinder 1 for a long time, thereby reducing the friction force generated between the first O-ring 3 and the second O-ring 4 and the inner wall of the cylinder 1, effectively avoiding the rapid decrease of the service life of the O-ring caused by the loss of the lubricant between the two O-rings, and greatly improving the service lives of the first O-ring 3 and the second O-ring 4 compared with the related art.
Therefore, the cylinder provided by the embodiment of the utility model has the advantages of long service life and the like.
In some embodiments, the piston 2 has an opening communicating with the storage cavity 201, the cylinder further includes a cover 7, the cover 7 is detachably covered on the opening, the pushing member 5 and the elastic member 6 are both disposed in the storage cavity 201, the elastic member 6 is disposed between the cover 7 and the pushing member 5, and the first stopping portion 701 is disposed on the cover 7.
For example, as shown in fig. 3, in the assembly process, the lubricant is injected into the storage cavity 201 through the opening, then the pushing member 5 is placed in the storage cavity 201, and then the elastic member 6 is placed in the storage cavity 201, and the right end of the elastic member 6 is abutted against the second abutment 207 of the pushing member 5. The cover 7 may be screwed, inserted, or adhered to the opening, and the left end of the elastic member 6 is stopped against the first stopping portion 701, and the elastic member 6 is in a compressed state so as to provide a desired pushing force to the pushing member 5.
Therefore, the opening and the sealing cover 7 are arranged on the piston 2, and the sealing cover 7 is detachably covered on the opening, so that the pushing piece 5 and the elastic piece 6 are convenient to install, the cylinder of the embodiment of the utility model is convenient to assemble, and the improvement of the assembly efficiency of the cylinder is facilitated.
In some embodiments, the reservoir 201 extends in the axial direction of the piston 2, with an opening provided on the end face of the piston 2.
For example, as shown in fig. 1 to 3, the storage chamber 201 extends in the left-right direction, and the opening is provided on the left end face of the piston 2, so that the opening is provided on the end face of the piston 2, and the clamping fixation of the piston 2 and the processing of the opening are facilitated during the processing, thereby facilitating the processing and manufacturing of the piston 2.
In some embodiments, the piston 2 further has a first flow channel 204 thereon, the extending direction of the first flow channel 204 is perpendicular to the extending direction of the storage cavity 201, the inlet end of the first flow channel 204 is communicated with the storage cavity 201, and the outlet end of the first flow channel 204 forms the oil outlet 202.
For example, as shown in fig. 1 to 3, the first flow passage 204 extends in the radial direction of the piston 2, and by making the extending direction of the first flow passage 204 perpendicular to the extending direction of the reservoir 201, during the processing of the first flow passage 204, the clamping and fixing of the piston 2 and the processing of the first flow passage 204 are facilitated, thereby making the processing and manufacturing of the piston 2 convenient.
Alternatively, the storage chamber 201 is circular in cross-section.
According to the cylinder provided by the embodiment of the utility model, the section of the storage cavity 201 is set to be circular, the storage cavity 201 can be processed in a milling cutter drilling mode in the processing process, so that the storage cavity 201 is convenient to process, if the section of the storage cavity 201 is set to be square in other shapes, for example, the storage cavity is required to be manufactured by adopting electric spark discharge machining, the processing period is slow, and the processing cost is high.
Alternatively, the first flow channel 204 is circular in cross-section.
According to the cylinder provided by the embodiment of the utility model, the section of the first flow passage 204 is set to be circular, and the first flow passage 204 can be machined in a milling cutter drilling mode in the machining process, so that the first flow passage 204 is convenient to machine, and if the section of the first flow passage 204 is set to be in other shapes such as square, electric spark discharge machining is needed, the machining period is slow, and the machining cost is high.
In some embodiments, the cover 7 has a first end surface 702 and a second end surface 703 opposite to each other in the axial direction of the piston 2, the second end surface 703 being disposed closer to the elastic member 6 than the first end surface 702, the second end surface 703 forming a first abutment 701;
the pushing member 5 has a third end surface 205 and a fourth end surface 206 opposite to each other in the axial direction of the piston 2, the third end surface 205 is disposed closer to the elastic member 6 than the fourth end surface 206, and the third end surface 205 forms a second abutting portion 207.
For example, as shown in fig. 3, the first end surface 702 is located at the left side of the second end surface 703, the third end surface 205 is located at the left side of the fourth end surface 206, and the second end surface 703 of the cover 7 is formed into the first abutting portion 701, and the third end surface 205 is formed into the second abutting portion 207, so that the cover 7 and the pushing member 5 have simple structures and are convenient to manufacture, and the cylinder according to the embodiment of the utility model has simple structure and is convenient to manufacture.
In some embodiments, the elastic member 6 is a spring.
In some embodiments, the third end surface 205 has a protrusion 2051, where the protrusion 2051 protrudes in a direction approaching the opening along the axial direction of the piston 2, and a portion of the elastic member 6 is sleeved on the protrusion 2051.
For example, as shown in fig. 3, the protrusion 2051 is a cylindrical protrusion 2051, the protrusion 2051 is protruded leftwards, the right end of the spring is sleeved on the protrusion 2051, and the protrusion 2051 is arranged on the third end surface 205, so that the spring is convenient to install.
In some embodiments, the outer circumferential surface of the piston 2 of the cylinder according to the embodiment of the present utility model is further provided with a first mounting groove 208 and a second mounting groove 209, where the first mounting groove 208 and the second mounting groove 209 are disposed at two sides of the oil outlet 202 along the axial direction of the piston 2 at intervals, a part of the first O-ring 3 is disposed in the first mounting groove 208, another part of the first O-ring 3 is abutted against the inner wall of the cylinder 1, a part of the second O-ring 4 is disposed in the second mounting groove 209, and another part of the second O-ring 4 is abutted against the inner wall of the cylinder 1.
For example, as shown in fig. 1 to 3, the first mounting groove 208 and the second mounting groove 209 are both annular grooves, the first O-ring 3 is sleeved in the first mounting groove 208, the inner side portion of the first O-ring 3 is placed in the first mounting groove 208, and the outer side portion of the first O-ring 3 is stopped against the inner wall of the cylinder 1. The second O-shaped ring 4 is sleeved in the second mounting groove 209, the inner side part of the second O-shaped ring 4 is arranged in the second mounting groove 209, and the outer side of the second O-shaped ring 4 is arranged to be abutted against the inner wall of the cylinder body 1. The first and second O- rings 3 and 4 are conveniently installed by arranging the first and second mounting grooves 208 and 209, which is beneficial to improving the assembly efficiency of the cylinder according to the embodiment of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.
Claims (9)
1. A long life cylinder comprising:
a cylinder (1);
the piston (2) is arranged in the cylinder body (1) and can move along the axial direction of the cylinder body (1), the piston (2) is provided with a storage cavity (201) and an oil outlet (202) communicated with the storage cavity (201), and the oil outlet (202) is positioned on the outer peripheral surface of the piston (2);
the first O-shaped ring (3) and the second O-shaped ring (4) are arranged at two sides of the oil outlet (202) along the axial direction of the piston (2) at intervals;
the pushing piece (5), at least a part of the pushing piece (5) is positioned in the storage cavity (201), the pushing piece (5) is movable along the extending direction of the storage cavity (201), and the pushing piece (5) is in sealing fit with the inner wall of the storage cavity (201);
the piston (2) is provided with a first abutting part (701), the pushing part (5) is provided with a second abutting part (207), two ends of the elastic part (6) are respectively abutted against the first abutting part (701) and the second abutting part (207), and the elastic part (6) is used for providing an elastic force towards the pushing part (5) so that the pushing part (5) pushes out the lubricant stored in the storage cavity (201) from the oil outlet (202).
2. The long-life cylinder according to claim 1, wherein the piston (2) has an opening communicating with the storage chamber (201), the cylinder further comprises a cover (7), the cover (7) is detachably covered on the opening, the pushing member (5) and the elastic member (6) are both disposed in the storage chamber (201), the elastic member (6) is disposed between the cover (7) and the pushing member (5), and the first abutting portion (701) is disposed on the cover (7).
3. A long life cylinder according to claim 2, characterized in that the reservoir (201) extends in the axial direction of the piston (2), the opening being provided on the end face of the piston (2).
4. A long life cylinder according to claim 3, wherein the piston (2) further has a first flow passage (204), the direction of extension of the first flow passage (204) being perpendicular to the direction of extension of the reservoir (201), the inlet end of the first flow passage (204) being in communication with the reservoir (201), the outlet end of the first flow passage (204) forming the oil outlet (202).
5. A long life cylinder according to claim 4, characterized in that the storage chamber (201) is circular in cross section; and/or the first flow channel (204) is circular in cross-section.
6. A long life cylinder according to claim 2, characterized in that the cover (7) has a first end face (702) and a second end face (703) opposite in the axial direction of the piston (2), the second end face (703) being arranged closer to the elastic member (6) than the first end face (702), the second end face (703) forming the first abutment (701);
the pushing piece (5) is provided with a third end face (205) and a fourth end face (206) which are opposite to each other along the axial direction of the piston (2), the third end face (205) is arranged closer to the elastic piece (6) than the fourth end face (206), and the third end face (205) forms the second abutting part (207).
7. A long life cylinder according to claim 6, characterized in that the elastic member (6) is a spring.
8. The long-life cylinder according to claim 7, wherein the third end surface (205) has a protrusion (2051), the protrusion (2051) is provided so as to protrude in a direction approaching the opening in the axial direction of the piston (2), and a part of the elastic member (6) is fitted over the protrusion (2051).
9. The long-life cylinder according to claim 1, wherein the piston (2) further has a first mounting groove (208) and a second mounting groove (209) on the outer circumferential surface thereof, the first mounting groove (208) and the second mounting groove (209) are provided on both sides of the oil outlet (202) at intervals along the axial direction of the piston (2), a part of the first O-ring (3) is disposed in the first mounting groove (208), another part of the first O-ring (3) is stopped against the inner wall of the cylinder (1), a part of the second O-ring (4) is disposed in the second mounting groove (209), and another part of the second O-ring (4) is stopped against the inner wall of the cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320238237.8U CN219081981U (en) | 2023-01-31 | 2023-01-31 | Cylinder with long service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320238237.8U CN219081981U (en) | 2023-01-31 | 2023-01-31 | Cylinder with long service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219081981U true CN219081981U (en) | 2023-05-26 |
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ID=86402525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320238237.8U Active CN219081981U (en) | 2023-01-31 | 2023-01-31 | Cylinder with long service life |
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| Country | Link |
|---|---|
| CN (1) | CN219081981U (en) |
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2023
- 2023-01-31 CN CN202320238237.8U patent/CN219081981U/en active Active
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