CN211536028U - Dual-purpose push rod piston - Google Patents
Dual-purpose push rod piston Download PDFInfo
- Publication number
- CN211536028U CN211536028U CN201921877660.2U CN201921877660U CN211536028U CN 211536028 U CN211536028 U CN 211536028U CN 201921877660 U CN201921877660 U CN 201921877660U CN 211536028 U CN211536028 U CN 211536028U
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- piston
- push rod
- cavity
- thread groove
- groove
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Abstract
The utility model discloses a dual-purpose push rod piston relates to the piston field, including the piston, the inside of piston is provided with the cavity, the inside of cavity is provided with the thread groove, the inside position that is located the thread groove top of cavity is provided with the lock groove, and the diameter in lock groove is greater than the diameter in thread groove, the inside embedding of piston outside top bulge has the anchor ring. The utility model discloses an inboard at the cavity is provided with annular thread groove, make the push rod can with piston threaded connection, and be provided with the lock groove at the top of the inboard thread groove of cavity, when the push rod can not with piston threaded connection, but the push rod card goes into lock groove and piston connection, thereby the application range of piston has been extended, make a piston can cooperate the use with two kinds of push rods, the top embedding of piston has the reinforcing ring, make the piston top can not produce great deformation when receiving external force extrusion, laminate mutually with the inner wall of injection tube all the time, prevent that the medicament from flowing.
Description
Technical Field
The utility model relates to a piston field specifically is a dual-purpose push rod piston.
Background
The injector consists of a syringe with a small hole at the front end and a matched piston core rod, the injector is used for injecting a small amount of liquid or injecting a small amount of liquid into an area which cannot be accessed by other methods or extracting the liquid or the gas from the small hole at the front end of the syringe when the core rod is pulled out, the liquid or the gas is extruded when the core rod is pushed in, and the process of extracting or injecting the gas or the liquid by the injector and a needle is called as injection.
Most of the existing syringe push rod pistons are connected with the push rod only by one connection mode, so that the application range of the pistons is limited, and the pistons are easy to deform when being extruded by external force, so that gaps are generated between the inner wall of the syringe and the pistons, and the medicament flows out to influence the use effect of the medicament.
Disclosure of Invention
The utility model aims to provide a: in order to solve the problem that the existing injector push rod piston is mostly connected with a push rod only by using a connection mode, thereby limiting the application range of the piston, and the piston is easy to deform when being extruded by external force, so that a gap is generated between the inner wall of the injection tube and the piston, the medicament flows out, and the using effect of the medicament is influenced, and the dual-purpose push rod piston is provided.
In order to achieve the above object, the utility model provides a following technical scheme: the dual-purpose push rod piston comprises a piston body, a cavity is arranged inside the piston body, a thread groove is formed inside the cavity, a buckling groove is formed in the position, located at the top of the thread groove, inside the cavity, the diameter of the buckling groove is larger than that of the thread groove, and a reinforcing ring is embedded into the protruding portion of the top end of the outer side of the piston body.
Preferably, the bottom of the piston is provided with a projection.
Preferably, the material of reinforcing ring is the steel wire.
Preferably, the top, the bottom and the middle position of the outer side of the piston are all convex structures.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an inboard at the cavity is provided with annular thread groove, make the push rod can with piston threaded connection, and be provided with the lock groove at the top of the inboard thread groove of cavity, when the push rod can not with piston threaded connection, but the push rod card goes into lock groove and piston connection, thereby the application range of piston has been extended, make a piston can cooperate the use with two kinds of push rods, the top embedding of piston has the reinforcing ring, make the piston top can not produce great deformation when receiving external force extrusion, laminate mutually with the inner wall of injection tube all the time, prevent that the medicament from flowing.
Drawings
Fig. 1 is a cross-sectional view of the present invention;
fig. 2 is a schematic structural view of the main body and the reinforcing ring of the present invention.
In the figure: 1. a piston; 2. a cavity; 3. a thread groove; 4. buckling the groove; 5. reinforcing rings; 6. and (4) a bump.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, a dual-purpose plunger piston includes a piston 1, a cavity 2 is disposed inside the piston 1, a thread groove 3 is disposed inside the cavity 2, a fastening groove 4 is disposed inside the cavity 2 and at the top of the thread groove 3, the diameter of the fastening groove 4 is greater than that of the thread groove 3, and a reinforcing ring 5 is embedded inside a protruding portion of the top end of the outer side of the piston 1.
The utility model discloses a be provided with annular thread groove 3 in the inside of cavity 2, make the push rod can with 1 threaded connection of piston, and be provided with lock groove 4 at 2 inside thread grooves 3's of cavity top, when the push rod can not be with 1 threaded connection of piston, the push rod can block into lock groove 4 and be connected with piston 1, thereby piston 1's application range has been extended, make a piston 1 can cooperate the use with two kinds of push rods, piston 1's top embedding has reinforcing ring 5, make the top in the piston 1 outside can not produce great deformation when receiving external force extrusion, laminate mutually with the inner wall of injection tube all the time, prevent that the medicament from flowing out.
Please refer to fig. 1, the bottom of the piston 1 is provided with a protrusion 6, the bottom of the piston 1 is provided with the protrusion 6, so as to increase the air tightness between the push rod and the piston 1.
Please refer to fig. 1, the material of the reinforcing ring 5 is steel wire, the utility model discloses a set up the material of reinforcing ring 5 as the steel wire, steel wire elasticity and intensity are higher, are difficult for taking place to damage in use.
Please refer to fig. 1, the top, the bottom and the middle position outside the piston 1 are all protruding structures, the utility model discloses a be provided with the multiunit recess in the outside of piston 1 for the piston 1 reduces the frictional force between injection tube and the piston 1 when playing the sealing effect, makes the piston 1 more convenient to use.
The working principle is as follows: when using, the inside thread groove 3 of push rod accessible cavity 2 and piston 1 threaded connection, the push rod does also can go into the inside of piston 1 through the inside lock groove 4 card of cavity 2, and the inside protruding part that forms because thread groove 3 can increase the frictional force between the push rod of card income and the piston 1 of cavity 2, make the push rod be difficult for droing, thereby it can have two kinds of methods to be connected to realize push rod and piston 1, and the reinforcing ring 5 that the piston 1 top set up makes piston 1 when receiving external force, can not produce great deformation and cause the outflow of medicament, annular lug 6 increase the gas tightness between push rod and the piston of the bottom of piston 1.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (4)
1. A dual-purpose push rod piston, includes piston (1), its characterized in that: the piston is characterized in that a cavity (2) is arranged inside the piston (1), a thread groove (3) is arranged inside the cavity (2), a buckling groove (4) is arranged at the position, located at the top of the thread groove (3), inside the cavity (2), the diameter of the buckling groove (4) is larger than that of the thread groove (3), and a reinforcing ring (5) is embedded inside a protruding portion at the top end of the outer side of the piston (1).
2. The dual-purpose pusher piston of claim 1, further comprising: the bottom of the piston (1) is provided with a convex block (6).
3. The dual-purpose pusher piston of claim 1, further comprising: the reinforcing ring (5) is made of steel wires.
4. The dual-purpose pusher piston of claim 1, further comprising: the top, the bottom and the middle position of the outer side of the piston (1) are all in a convex structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921877660.2U CN211536028U (en) | 2019-11-04 | 2019-11-04 | Dual-purpose push rod piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921877660.2U CN211536028U (en) | 2019-11-04 | 2019-11-04 | Dual-purpose push rod piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211536028U true CN211536028U (en) | 2020-09-22 |
Family
ID=72499858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921877660.2U Active CN211536028U (en) | 2019-11-04 | 2019-11-04 | Dual-purpose push rod piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211536028U (en) |
-
2019
- 2019-11-04 CN CN201921877660.2U patent/CN211536028U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 264200 No. 262, Yangting East Road, Yangting Town, Huancui District, Weihai City, Shandong Province Patentee after: APTA Hengyu (Weihai) medical equipment Co.,Ltd. Address before: 264200 No. 262, Yangting East Road, Yangting Town, Huancui District, Weihai City, Shandong Province Patentee before: Weihai Hengyu Medical Equipment Co.,Ltd. |