CN109818180B - Spiral spring type socket - Google Patents
Spiral spring type socket Download PDFInfo
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- CN109818180B CN109818180B CN201910186207.5A CN201910186207A CN109818180B CN 109818180 B CN109818180 B CN 109818180B CN 201910186207 A CN201910186207 A CN 201910186207A CN 109818180 B CN109818180 B CN 109818180B
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- endotheca
- wire
- wire spring
- holes
- inner sleeve
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Abstract
The invention discloses a spiral spring type socket, which belongs to the field of electric connectors and has the following specific technical scheme: the utility model provides a spiral line spring formula socket, includes insulating overcoat, endotheca and a plurality of wire spring, the endotheca is the cylindrical tube type structure that link up from top to bottom, be provided with a plurality of groups of through-holes on the lateral wall of endotheca from top to bottom, every group includes the through-hole of two-layer crisscross setting, every layer of through-hole equipartition on same horizontal plane, every wire spring is followed the circumferencial direction of endotheca passes same group of through-hole in proper order and end to end constitutes a wire spring wire ring, and the inside of insulating overcoat is arranged in to the endotheca that is equipped with wire spring wire ring, endotheca and insulating overcoat fixed connection, endotheca. The invention adopts the spiral layout of the multilayer wire spring wires, so that the change of the insertion and extraction force of the jack in the operation process is more stable, the impact peak value is reduced, and the abrasion degree of the insertion pin and the jack is reduced.
Description
Technical Field
The invention belongs to the field of electric connectors, and particularly relates to a spiral spring type socket.
Background
Electrical connectors of various types are widely used in electrical circuits of various types. The use of electrical connectors on an aircraft can range from hundreds to thousands of pieces, involving tens of thousands of lines. The electric connector not only meets the electromagnetic performance requirement, but also ensures reliable contact and convenient maintenance in severe environment. The reliability of a single electrical connector directly affects the normal operation of the circuit system, and safety of the whole host is involved. At present, wire spring type sockets are widely used in electrical connector products due to their high stability and reliability. The traditional wire spring type socket has the following characteristics: a plurality of elastic metal wires are arranged in the jack according to a straight generatrix of the single-blade rotating hyperboloid and form an included angle with the straight generatrix of the inner sleeve. The contact resistance is low and stable, the plugging force is small, the abrasion of the contact element is low, and the plugging service life is long. In practical use, however, a large peak exists in the insertion force for pushing the contact pin into the jack; and when the contact pin is stably connected with the jack, objective errors exist in the manufacture of the jack, so that the effective contact area between the contact pin and the jack does not meet the design requirement, and the problem that the connector in a working state is suddenly loosened under the influence of external factors such as impact and vibration is caused.
Disclosure of Invention
In order to make the change of the insertion and extraction force borne by the contact pin in the process of inserting the contact pin into the jack more stable and reduce the impact peak value borne by the contact pin and the abrasion rate of the contact pin; the invention discloses a spiral spring type socket, wherein the effective contact area of jacks is larger than that of the traditional wire spring type jacks, so that the impact resistance and the vibration resistance of a connector in a stable working state are improved, and the plugging force index, the mechanical index and the connection reliability index of the socket are higher than those of the conventional products in the market.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a spiral line spring formula socket, includes insulating overcoat, endotheca and a plurality of wire spring, the endotheca is the cylindrical tube type structure that link up from top to bottom, be provided with a plurality of groups of through-holes on the lateral wall of endotheca from top to bottom, every group includes the through-hole of two-layer crisscross setting, every layer of through-hole equipartition on same horizontal plane, every wire spring is followed the circumferencial direction of endotheca passes same group of through-hole in proper order and end to end constitutes a wire spring wire ring, and the inside of insulating overcoat is arranged in to the endotheca that is equipped with wire spring wire ring, endotheca and insulating overcoat fixed connection, endotheca.
Furthermore, the radius of the area surrounded by the wire spring wire ring inside the inner sleeve is sequentially increased along the insertion direction of the contact pin.
Furthermore, the through holes in the layers are arranged in a plurality of parallel spiral lines along the axial direction.
Furthermore, the included angle between each spiral line and the axis of the inner sleeve is 45 degrees.
Furthermore, the number of the through holes of each layer is n, wherein n is more than or equal to 3.
Compared with the prior art, the invention has the following advantages:
1. the invention adopts the layout of the multi-layer wire spring wires, so that the change of the insertion and extraction force of the jack in the operation process is more stable, the impact peak value is reduced, and the abrasion degree of the insertion pin and the jack is reduced;
2. according to the invention, the contact points of the wire spring wire and the contact pin are all positioned on the same spiral line, and multi-point contact is adopted, so that the contact between the jack and the contact pin is more reliable, and the impact resistance and the vibration resistance of the electric connector are improved;
3. the radius of the area surrounded by the wire spring wire rings is sequentially increased along the inserting direction of the contact pin, and the friction force provided by each wire spring wire ring is sequentially reduced along the inserting direction, so that the change of the inserting and pulling force is more stable, and the impact on the contact pin in the inserting and pulling process is reduced;
4. the invention has small volume and simple structure and is suitable for electric connectors of various specifications.
Drawings
FIG. 1 is a schematic diagram of the overall layout of the present invention in its operating state;
FIG. 2 is a schematic view of the wire spring assembled in the inner case;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 5 is a top view of the wire spring assembled in the inner housing;
FIG. 6 is a schematic layout of the wire spring assembled in the inner case;
FIG. 7 is a schematic structural view of the inner sleeve;
FIG. 8 is a cross-sectional view of C-C of FIG. 7;
FIG. 9 is a cross-sectional view D-D of FIG. 7;
FIG. 10 is a schematic top view of a wire spring ring in end-to-end relationship;
FIG. 11 is a front view of a wire spring and wire ring in end-to-end relationship;
FIG. 12 is an isometric view of a wire spring wire eye connected end to end;
FIG. 13 is a schematic view showing the application of load when the pin is inserted into the socket;
FIG. 14 is a schematic view showing the application of load when the pin is pulled out of the socket;
FIG. 15 is a comparison graph of the variation curve of the insertion/extraction force when the wire spring jack of the present invention is inserted into the conventional wire spring jack;
FIG. 16 is a comparison graph of the variation curve of the pulling force when the wire spring jack is pulled out according to the present invention and the conventional wire spring jack;
in the figure: 1 is a contact pin, 2 is an insulating outer sleeve, 3 is an inner sleeve, and 4 is a wire spring.
Detailed Description
The technical solutions of the present invention are further described below with reference to fig. 1 to 16, but not limited thereto, and modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention.
Detailed description of the invention
The utility model provides a spiral line spring formula socket, includes insulating overcoat 2, endotheca 3 and a plurality of wire spring 4, endotheca 3 is the cylinder type structure that link up from top to bottom, be provided with a plurality of groups of through-holes on the lateral wall of endotheca 3 from top to bottom, every group includes the through-hole of two-layer crisscross setting, every layer of through-hole equipartition on same horizontal plane, every wire spring 4 follows the circumferencial direction of endotheca 3 passes same group of through-hole in proper order and end to end constitutes a wire spring wire ring, and the inside of insulating overcoat 2 is arranged in to endotheca 3 that is equipped with wire spring wire ring, endotheca 3 and insulating overcoat 2 fixed connection, endotheca 3 and a plurality of wire.
Furthermore, the radius of the area surrounded by the wire spring wire ring inside the inner sleeve 3 is sequentially increased along the insertion direction of the contact pin.
Furthermore, the through holes in the layers are arranged in a plurality of parallel spiral lines along the axial direction.
Further, the included angle between each spiral line and the axis of the inner sleeve 3 is 45 degrees.
Furthermore, the number of the through holes of each layer is n, wherein n is more than or equal to 3.
Furthermore, the number of the groups of the through holes can be set according to the requirement of the insertion and extraction force of the electric connector.
Furthermore, the variation of the radius of the wire spring wire ring can be set according to the insertion and extraction force requirement of the electrical connector.
Furthermore, when viewed from the top or bottom, the positions of two adjacent sets of through holes are centrosymmetric with respect to the axis of the inner sleeve 3.
Furthermore, the insulating outer sleeve 2 is of a circular ring type, so that the inner sleeve 3 and the wire spring 4 are protected from being in contact with the outside, and short circuit or electric leakage is avoided.
Example 1
The utility model provides a spiral line spring formula socket, includes insulating overcoat 2, endotheca 3 and a plurality of wire spring 4, endotheca 3 is the cylinder type structure that link up from top to bottom, be provided with a plurality of groups of through-holes on the lateral wall of endotheca 3 from top to bottom, every group includes the through-hole of two-layer crisscross setting, and every layer of through-hole quantity is three, and every layer of through-hole equipartition is on same horizontal plane, and every wire spring 4 is followed the circumferencial direction of endotheca 3 passes same group of through-hole in proper order and end to end constitutes a wire spring wire ring, and the endotheca 3 that is equipped with the wire spring wire ring arranges the inside of insulating overcoat 2 in, endotheca 3 and insulating overcoat 2 fixed connection, endot.
Furthermore, the radius of the area surrounded by the wire spring wire ring is sequentially increased along the insertion direction of the contact pin 1, and the change size condition of the radius of the wire spring wire ring can be set according to the insertion and extraction force requirement of the electric connector.
Furthermore, the through holes in the plurality of layers are arranged in a plurality of parallel spiral lines along the axial direction, and the included angle between each spiral line and the axis of the inner sleeve 3 is 45 degrees.
Furthermore, the number of the groups of the through holes can be set according to the requirement of the insertion and extraction force of the electric connector.
Furthermore, when viewed from the top or bottom, the positions of two adjacent sets of through holes are centrosymmetric with respect to the axis of the inner sleeve 3.
Furthermore, the insulating outer sleeve 2 is of a circular ring type, so that the inner sleeve 3 and the wire spring 4 are protected from being in contact with the outside, and short circuit or electric leakage is avoided.
Example 2
The utility model provides a spiral line spring formula socket, includes insulating overcoat 2, endotheca 3 and a plurality of wire spring 4, endotheca 3 is the cylinder type structure that link up from top to bottom, be provided with a plurality of groups of through-holes on the lateral wall of endotheca 3 from top to bottom, every group includes the through-hole of two-layer crisscross setting, and every layer of through-hole quantity is five, and every layer of through-hole equipartition is on same horizontal plane, and every wire spring 4 is followed the circumferencial direction of endotheca 3 passes same group of through-hole in proper order and end to end constitutes a wire spring wire ring, and the endotheca 3 that is equipped with the wire spring wire ring arranges the inside of insulating overcoat 2 in, endotheca 3 and insulating overcoat 2 fixed connection, endot.
Furthermore, the radius of the area surrounded by the wire spring wire ring is sequentially increased along the insertion direction of the contact pin 1, and the change size condition of the radius of the wire spring wire ring can be set according to the insertion and extraction force requirement of the electric connector.
Furthermore, the through holes in the plurality of layers are arranged in a plurality of parallel spiral lines along the axial direction, and the included angle between each spiral line and the axis of the inner sleeve 3 is 45 degrees.
Furthermore, the number of the groups of the through holes can be set according to the requirement of the insertion and extraction force of the electric connector.
Furthermore, when viewed from the top or bottom, the positions of two adjacent sets of through holes are centrosymmetric with respect to the axis of the inner sleeve 3.
Furthermore, the insulating outer sleeve 2 is of a circular ring type, so that the inner sleeve 3 and the wire spring 4 are protected from being in contact with the outside, and short circuit or electric leakage is avoided.
Example 3
The utility model provides a spiral spring formula socket, includes insulating overcoat 2, endotheca 3 and a plurality of wire spring 4, endotheca 3 is the cylinder type structure that link up from top to bottom, be provided with a plurality of groups of through-holes on the lateral wall of endotheca 3 from top to bottom, every group includes the through-hole of two-layer crisscross setting, and every layer of through-hole quantity is seven, and every layer of through-hole equipartition is on same horizontal plane, and every wire spring 4 is followed the circumferencial direction of endotheca 3 passes same group of through-hole in proper order and end to end constitutes a wire spring wire ring, and the endotheca 3 that is equipped with the wire spring wire ring arranges the inside of insulating overcoat 2 in, endotheca 3 and insulating overcoat 2 fixed connection, endothec.
Furthermore, the radius of the area surrounded by the wire spring wire ring is sequentially increased along the insertion direction of the contact pin 1, and the change size condition of the radius of the wire spring wire ring can be set according to the insertion and extraction force requirement of the electric connector.
Furthermore, the through holes in the plurality of layers are arranged in a plurality of parallel spiral lines along the axial direction, and the included angle between each spiral line and the axis of the inner sleeve 3 is 45 degrees.
Furthermore, the number of the groups of the through holes can be set according to the requirement of the insertion and extraction force of the electric connector.
Furthermore, when viewed from the top or bottom, the positions of two adjacent sets of through holes are centrosymmetric with respect to the axis of the inner sleeve 3.
Furthermore, the insulating outer sleeve 2 is of a circular ring type, so that the inner sleeve 3 and the wire spring 4 are protected from being in contact with the outside, and short circuit or electric leakage is avoided.
When the socket works specifically, the socket and the matched contact pin 1 are mutually independent, and the contact pin 1 is inserted into the jack of the socket in the using process; in the process of operating the pin 1 to enter and exit the jack, the load application mode is as follows:
when inserted, the pin is forced to force F1Is inserted under the action of (1);
when pulling out, the pin is forced to F2Is pulled out under the action of (1).
As shown in fig. 1 to 16, the working principle of the present invention is as follows:
the invention arranges a plurality of layers of wire spring wire rings on the inner sleeve 2 in the jack, and the geometric center of the wire spring wire rings is superposed with the axle center of the electric connector. Due to the structural form of the wire spring wire ring, the insertion and extraction force applied to the contact pin 1 when the contact pin is inserted into or pulled out of the jack is gradually changed in a step shape, the amplitude is small, abrasion caused by impact peaks is weakened, and the stability of the insertion and extraction force is improved; in the process that the contact pin 1 is inserted into the jack, due to the layout of the wire spring wire rings on the inner sleeve 2, the contact pin 1 and each layer of wire spring wire ring are provided with n effective contact points, and the contact points between layers are not overlapped along the insertion direction, so that the reliability of the connector in working is improved. As shown in FIG. 5, in order to make the variation tendency of the insertion and extraction force more smooth, the radius R of the area surrounded by the wire spring wire ring2＞R1And the insertion direction is sequentially increased, so that the insertion and extraction force required at the final stage of the insertion process and the initial stage of the extraction process is reduced, and the abrasion condition of the electric connector is reduced. As shown in fig. 6, the wire spring wire of the present invention is at an angle to the connector axis. When the wire spring wires are distributed along the linear type, the minimum contact area of the wire spring wires has an upper limit under the influence of material performance and a bending process.
Therefore, the shape and the arrangement mode of the wire spring wire rings are improved, so that the absolute value of the peak value of the insertion and extraction force applied to the contact pin 1 in the using process of the jack is reduced, the variation trend of the insertion and extraction force is more stable, and the abrasion condition of the electric connector can be improved. Meanwhile, the invention can obviously improve the impact resistance, the vibration resistance and the connection reliability of the electric connector in normal operation.
Claims (4)
1. The utility model provides a spiral spring formula socket, includes insulating overcoat (2), its characterized in that: the socket further comprises an inner sleeve (3) and a plurality of wire springs (4), the inner sleeve (3) is of a cylindrical structure which is through from top to bottom, a plurality of groups of through holes are formed in the side wall of the inner sleeve (3) from top to bottom, each group of through holes comprises two layers of through holes which are arranged in a staggered mode, each layer of through holes are uniformly distributed on the same horizontal plane, each wire spring (4) is arranged along the circumferential direction of the inner sleeve (3) and penetrates through the same group of through holes in sequence to form a wire spring wire ring in an end-to-end mode, the inner sleeve (3) which is provided with the wire spring wire ring is arranged inside the insulating outer sleeve (2), the inner sleeve (3) is fixedly connected with the insulating outer sleeve (2), the inner sleeve (3) and the plurality of wire springs (4) are made of conductive materials, and the radius of the area surrounded by the wire spring wire ring inside the.
2. A spiral spring type socket according to claim 1, wherein: the through holes are arranged in a plurality of parallel spiral lines along the axial direction.
3. A spiral spring type socket according to claim 1, wherein: the included angle between each spiral line and the axial line of the inner sleeve (3) is 45 degrees.
4. A spiral spring type socket according to claim 1, wherein: the number of the through holes of each layer is n, wherein n is more than or equal to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910186207.5A CN109818180B (en) | 2019-03-12 | 2019-03-12 | Spiral spring type socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910186207.5A CN109818180B (en) | 2019-03-12 | 2019-03-12 | Spiral spring type socket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109818180A CN109818180A (en) | 2019-05-28 |
| CN109818180B true CN109818180B (en) | 2021-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910186207.5A Active CN109818180B (en) | 2019-03-12 | 2019-03-12 | Spiral spring type socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109818180B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5203813A (en) * | 1991-08-06 | 1993-04-20 | Airborn, Inc. | Low entry force connector socket method of manufacture |
| EP2497527A2 (en) * | 2011-03-11 | 2012-09-12 | Greatbatch Ltd. | Low insertion force electrical connector for implantable medical devices |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023200A (en) * | 2017-12-15 | 2018-05-11 | 上海航天科工电器研究院有限公司 | A kind of micro- spring socket electrical contact component |
-
2019
- 2019-03-12 CN CN201910186207.5A patent/CN109818180B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5203813A (en) * | 1991-08-06 | 1993-04-20 | Airborn, Inc. | Low entry force connector socket method of manufacture |
| EP2497527A2 (en) * | 2011-03-11 | 2012-09-12 | Greatbatch Ltd. | Low insertion force electrical connector for implantable medical devices |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109818180A (en) | 2019-05-28 |
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