CN216911924U - Sleeved spring pipe assembly - Google Patents
Sleeved spring pipe assembly Download PDFInfo
- Publication number
- CN216911924U CN216911924U CN202123442657.8U CN202123442657U CN216911924U CN 216911924 U CN216911924 U CN 216911924U CN 202123442657 U CN202123442657 U CN 202123442657U CN 216911924 U CN216911924 U CN 216911924U
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- China
- Prior art keywords
- spring
- tube
- side wall
- inner tube
- positioning strip
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- 239000003292 glue Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 238000007723 die pressing method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model discloses a sleeved spring tube assembly, which comprises: the outer side wall of the spring inner tube is provided with a first spiral groove; the spring outer tube is sleeved on the spring inner tube, two ends of the spring inner tube extend out of the spring outer tube, the spring outer tube comprises at least one spiral first strand wire, a positioning strip is arranged at the end part of the first strand wire and attached to the outer side wall of the spring inner tube, the thickness of the positioning strip is smaller than that of the first strand wire, and a first convex part extending into the first groove is arranged on the inner side wall of the positioning strip; the sleeve piece is sleeved at the end part of the spring inner tube, and the outer side wall of the positioning strip is attached to the inner side wall of the sleeve piece. According to the structure, the sleeve piece can limit the positioning strip to swing back to the spring inner tube, so that the first convex part is stably placed in the first groove, the spring outer tube and the spring inner tube can be fixed, and the spring inner tube is limited to slide relative to the spring outer tube.
Description
Technical Field
The utility model relates to the technical field of medical instrument parts, in particular to a spring tube assembly.
Background
In some medical instruments, spring tubes are often used as spare and accessory parts, and in order to increase the strength of the spring tubes and enable the spring tubes to be suitable for occasions transmitting large acting force, some spring tubes adopt a sleeve structure, namely the spring tubes are composed of outer spring tubes and inner spring tubes which are sleeved together. When the spring pipe is produced, the spring outer pipe and the spring inner pipe are respectively wound and produced through the steel wires in one mode, then the spring inner pipe is inserted and assembled in the spring outer pipe, the production mode is flexible, but due to the fact that a fit clearance exists between the spring outer pipe and the spring inner pipe, the situation that the spring inner pipe can slide relative to the spring outer pipe exists, and therefore the spring outer pipe and the spring inner pipe need to be fixed. Some methods are directly injecting glue between the inner side of the outer spring tube and the outer side of the inner spring tube for fixation, but the glue layer is thin due to too small fit clearance, the glue layer is uneven in thickness, and the fixation effect is poor due to the fact that the glue layer is only used.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a sleeved spring pipe assembly, which can fix a spring outer pipe and a spring inner pipe and limit the sliding of the spring inner pipe relative to the spring outer pipe.
To achieve the above object, there is provided a nested spring tube assembly comprising: the outer side wall of the spring inner tube is provided with a first spiral groove; the spring outer tube is sleeved on the spring inner tube, two ends of the spring inner tube extend out of the spring outer tube, the spring outer tube comprises at least one spiral first strand wire, a positioning strip is arranged at the end part of the first strand wire, the positioning strip is attached to the outer side wall of the spring inner tube, the thickness of the positioning strip is smaller than the wall thickness of the first strand wire, and a first convex part extending into the first groove is arranged on the inner side wall of the positioning strip; the sleeve piece is sleeved at the end part of the spring inner tube, and the outer side wall of the positioning strip is attached to the inner side wall of the sleeve piece.
According to the sleeved spring tube assembly, the positioning strip and the first strand are arranged into an integrated structure.
According to the sleeved spring tube assembly, the spring inner tube comprises at least one spiral second strand of wire, and the cross section of the second strand of wire is circular or elliptical or racetrack-shaped.
According to the sleeved spring tube assembly, the spring inner tube and the spring outer tube are both provided with the multi-strand spring tube.
According to the sleeved spring tube assembly, the outer diameter of the sleeve part is not larger than that of the outer spring tube.
According to the sleeved spring tube assembly, the sleeve piece is a heat-shrinkable rubber tube.
According to the sleeved spring tube assembly, the inner side wall of the sleeve piece is provided with a second convex part extending into the first groove.
According to the sleeved spring tube assembly, the outer side wall of the sleeve part is provided with threads.
According to the sleeved spring tube assembly, the inner side wall of the sleeve piece is provided with a second groove, and the outer side wall of the positioning strip is provided with a third convex part extending into the second groove.
According to the sleeved spring pipe assembly, a glue layer is arranged between the inner side wall of the sleeve piece and the outer side wall of the spring inner pipe.
Has the advantages that: according to the structure, the positioning strip can be limited to swing back to the spring inner tube through the sleeve piece, the first convex portion is stably placed in the first groove, the spring outer tube and the spring inner tube can be fixed, and the spring inner tube is limited to slide relative to the spring outer tube.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described below with reference to the accompanying drawings and examples;
FIG. 1 is a block diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A shown in FIG. 1;
FIG. 3 is an axial view of the outer tube of the spring;
fig. 4 is an axial view of the sleeve member.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, greater than, less than, exceeding, etc. are understood as excluding the present numbers, and the above, below, inside, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 4, a sleeved spring tube assembly includes a spring inner tube 10, a spring outer tube 20 and a sleeve member 30, wherein an outer side wall of the spring inner tube 10 has a first groove 11 in a spiral shape, the spring outer tube 20 is sleeved on the spring inner tube 10 and both ends of the spring inner tube 10 extend out of the spring outer tube 20, the spring outer tube 20 includes at least one first strand 21 in a spiral shape, an end portion of the first strand 21 has a positioning bar 22, the positioning bar 22 is attached to the outer side wall of the spring inner tube 10, a thickness of the positioning bar 22 is smaller than a wall thickness of the first strand 21, an inner side wall of the positioning bar 22 has a first protrusion 221 extending into the first groove 11, the sleeve member 30 is sleeved on the end portion of the spring inner tube 10 and an outer side wall of the positioning bar 22 is attached to an inner side wall of the sleeve member 30.
As configured above, the sleeve member 30 can limit the swing of the positioning bar 22 back to the spring inner tube 10, so that the first protrusion 221 is stably placed in the first groove 11, thereby fixing the spring outer tube 20 and the spring inner tube 10, and limiting the sliding of the spring inner tube 10 relative to the spring outer tube 20. Wherein, the inner side wall of the sleeve member 30 and the outer side wall of the positioning strip 22 can be tightly fitted in an interference fit manner to limit the sliding separation of the sleeve member 30.
Specifically, the positioning strip 22 and the first strand 21 are arranged to be of an integral structure, when the spring outer tube 20 is produced, a section of steel wire with a set length is wound to be spiral, two ends of the steel wire are straightened and then placed in a die to be pressed, so that the end portion of the steel wire is flattened and forms a shape capable of being attached to the spring inner tube 10, the steel wire can be processed to form the first strand 21 and the positioning strip 22, the thickness of the positioning strip 22 is smaller than the wall thickness of the first strand 21, and in addition, the first convex portion 221 can be formed on the inner side wall of the positioning strip 22 through die pressing.
Referring to fig. 1, the spring inner tube 10 includes at least one second strand 12 having a spiral shape, and the second strand 12 has a circular cross-section. Through the structure, the outer side wall of the spring inner tube 10 is not in a straight-tube smooth surface structure, and the concave part of the outer side wall of the spring inner tube 10 is the first groove 11, namely the first groove 11 is formed by surrounding the second strand 12.
In some embodiments, the cross-section of the second strand 12 may also have other shapes, such as an oval or racetrack shape. In addition, the first groove 11 may be formed on the surface of the second strand 12 by machining, for example, when the steel wire is manufactured, a length of steel wire with a set length is fixed, a machining groove arranged along the length direction of the steel wire is machined on the surface of the steel wire by a machining device, and then the steel wire is wound into a spiral shape to form the second strand 12, i.e., the first groove 11 is formed on the second strand 12.
In some embodiments, the inner spring tube 10 and the outer spring tube 20 are both provided as a multi-strand spring tube, and correspondingly, the positioning bars 22 are also provided in plural and arranged around the axis of the outer spring tube 20. For example, in the case of the outer spring tube 20, a plurality of steel wires are stacked together and then placed together in a winding machine, and the steel wires are simultaneously wound in a spiral shape, so that a plurality of first strands 21 are formed in a sequential arrangement and attached to each other. Similarly, the spring inner tube 10 may also be formed by stacking and winding a plurality of steel wires to form a plurality of second strands 12 which are sequentially arranged and attached to each other.
The sleeve member 30 has an outer diameter no greater than the outer diameter of the outer spring tube 20 to avoid having an over-sized spring tube assembly that is not suitable for use in narrow applications.
In some embodiments, the sleeve member 30 is provided as a heat shrinkable tubing that is easy to assemble and flexible to manufacture.
In some embodiments, the inner side wall of the sleeve member 30 has a second protrusion 31 protruding into the first recess 11, by which structure the sleeve member 30 can be further restricted from sliding off the spring inner tube 10. Wherein, the sleeve member 30 can be provided with an alloy material or a plastic material, and when assembling, the sleeve member 30 can be installed in a rotating manner, and in the process of rotatably installing the sleeve member 30, the second protrusion 31 moves along the spiral path along the first groove 11.
Further, the outer side wall of the sleeve member 30 is threaded for connection with other devices.
The inner side wall of the sleeve member 30 has a second groove 32, and the outer side wall of the positioning bar 22 has a third protrusion 222 extending into the second groove 32 to limit the sliding of the positioning bar 22 relative to the sleeve member 30, so as to optimize the positioning effect between the outer spring tube 20 and the inner spring tube 10. Also, the second projection 31 may be formed on the outer side wall of the lock bar 22 by die pressing at the time of production.
A glue layer is arranged between the inner side wall of the sleeve member 30 and the outer side wall of the spring inner tube 10. During production, the sleeve member 30 may be firstly sleeved on the spring inner tube 10, and then glue is filled between the inner side wall of the sleeve member 30 and the outer side wall of the spring inner tube 10, so that the glue layer is formed after the glue is cured.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A nested spring tube assembly, comprising:
the outer side wall of the spring inner tube is provided with a first spiral groove;
the spring outer tube is sleeved on the spring inner tube, two ends of the spring inner tube extend out of the spring outer tube, the spring outer tube comprises at least one spiral first strand wire, a positioning strip is arranged at the end part of the first strand wire, the positioning strip is attached to the outer side wall of the spring inner tube, the thickness of the positioning strip is smaller than the wall thickness of the first strand wire, and a first convex part extending into a first groove is arranged on the inner side wall of the positioning strip;
the sleeve piece is sleeved at the end part of the spring inner tube, and the outer side wall of the positioning strip is attached to the inner side wall of the sleeve piece.
2. The nested spring tube assembly of claim 1,
the positioning strip and the first strand are arranged into an integrated structure.
3. The nested spring tube assembly of claim 1,
the spring inner tube comprises at least one second strand of spiral wire, and the section of the second strand of spiral wire is circular or elliptical or racetrack-shaped.
4. A nested spring tube assembly according to claim 1, 2 or 3,
the spring inner tube and the spring outer tube are both set to be multi-strand spring tubes.
5. The nested spring tube assembly of claim 1,
the outer diameter of the sleeve member is not greater than the outer diameter of the outer spring tube.
6. A nested spring tube assembly according to claim 1 or 5,
the sleeve piece is a heat-shrinkable rubber tube.
7. A nested spring tube assembly according to claim 1 or 5,
the inner side wall of the sleeve member is provided with a second convex part extending into the first groove.
8. The nested spring tube assembly of claim 7,
the outer side wall of the sleeve member is threaded.
9. The nested spring tube assembly of claim 8,
the inner side wall of the sleeve piece is provided with a second groove, and the outer side wall of the positioning strip is provided with a third convex part extending into the second groove.
10. The nested spring tube assembly of claim 9,
and a glue layer is arranged between the inner side wall of the sleeve piece and the outer side wall of the spring inner tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123442657.8U CN216911924U (en) | 2021-12-30 | 2021-12-30 | Sleeved spring pipe assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123442657.8U CN216911924U (en) | 2021-12-30 | 2021-12-30 | Sleeved spring pipe assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216911924U true CN216911924U (en) | 2022-07-08 |
Family
ID=82257009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123442657.8U Active CN216911924U (en) | 2021-12-30 | 2021-12-30 | Sleeved spring pipe assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216911924U (en) |
-
2021
- 2021-12-30 CN CN202123442657.8U patent/CN216911924U/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: No.10, No.9 Road, Qijiao Industrial Zone, Maicun village committee, Xingtan town, Shunde District, Foshan City, Guangdong Province 528300 Patentee after: Foshan Ruiyi Spring Precision Manufacturing Co.,Ltd. Address before: No.10, No.9 Road, Qijiao Industrial Zone, Maicun village committee, Xingtan town, Shunde District, Foshan City, Guangdong Province 528300 Patentee before: Foshan Ruiyi Electric Appliance Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 528300, 4th Floor, Building 2, No. 3 Xinfa Road, Shunde High tech Zone (Ronggui), Huakou Community, Ronggui Street, Shunde District, Foshan City, Guangdong Province (Residence Application) Patentee after: Foshan Ruiyi Spring Precision Manufacturing Co.,Ltd. Address before: No.10, No.9 Road, Qijiao Industrial Zone, Maicun village committee, Xingtan town, Shunde District, Foshan City, Guangdong Province 528300 Patentee before: Foshan Ruiyi Spring Precision Manufacturing Co.,Ltd. |