A rolled contact and connector

Abstract

This invention belongs to the field of connector technology, and specifically relates to a rolled contact and connector. The rolled contact is formed by spirally rolling a metal strip to create a helical spring structure. At least one generatrix of the helical spring structure has a first contact portion and a second contact portion that are sequentially positioned vertically to provide support. By spirally rolling the metal strip into a helical spring structure, the overall structure is simple and easy to manufacture, reducing manufacturing costs and difficulty. Simultaneously, when the rolled contact is compressed, the first and second contact portions maintain stable contact, providing positioning guidance for compression. Furthermore, a conductive path is formed on the rolled contact, running from top to bottom along the generatrix of the helical spring structure. This significantly shortens and simplifies the conductive path, resulting in a more compact overall structure and improved energy transmission efficiency.

Description

Technical Field

[0001] This invention belongs to the field of connector technology, and in particular relates to a rolled contact and connector. Background Technology

[0002] The elastic contacts in existing connectors are generally made of beryllium copper wire through extrusion winding to form button-shaped contacts. The overall structure of the button-shaped contact is characterized by randomly wound beryllium copper wire, which is small in size, light in weight and has good elasticity. However, its random winding forming process is relatively complex, and it also has the problems of high processing cost and low production efficiency.

[0003] At the same time, the problem of broken contact during the connection process of the button contact becomes more and more obvious after prolonged use and plugging and unplugging. In addition, due to the disordered winding beryllium copper wire inside, the internal conductive path is also relatively complex, resulting in a low overall energy transmission efficiency.

[0004] At the same time, with prolonged use and insertion / removal, the problem of broken contact during the connection process of the button contact becomes increasingly obvious. Furthermore, because it is filled with disordered and twisted beryllium copper wires, there are many contact points between the beryllium copper wires inside, and they are complex and intertwined, which makes the internal conductive path unclear and complicated, resulting in low overall energy transmission efficiency.

[0005] Chinese invention patent application CN113740564A, published on December 3, 2021, discloses an electrical contact and a method for manufacturing the electrical contact. The method for manufacturing the electrical contact is to integrally form a tapered spiral plate spring mechanism in the vertical direction from a single material. It is mechanically simple, has excellent functionality, and can be used as a circuit for lossless connection. The method for manufacturing the conductive plate-shaped electrical contact of the invention includes: (1) a first step of spirally winding the plate-shaped component to form a barrel shape; (2) a second step of longitudinally compressing the plate-shaped component, which has been formed into a barrel shape, until it becomes a spindle shape with overlapping vertical spiral structures; and (3) a third step of performing a prescribed curing treatment on the plate-shaped component, which has temporarily become a spindle shape through the second step, to form a spindle-shaped electrical contact.

[0006] This electrical contact reduces processing costs and improves production efficiency to some extent. Its bamboo shoot-shaped integrated electrical contact structure reduces resistance, improves conduction stability, and achieves lossless connection. At the same time, its conductivity transmission efficiency is higher than that of multi-component contact structures or button structures. However, this energy transmission path is not the shortest path, and the energy transmission efficiency can still be further improved. Summary of the Invention

[0007] The purpose of this invention is to provide a rolled contact to solve the technical problems of high processing cost, low production efficiency, complex conductive path and low energy transmission efficiency of the contact in the prior art.

[0008] Another objective of this invention is to provide a connector to solve the same technical problem.

[0009] To achieve the above objectives, the technical solution for the rolled contact element provided by this invention is as follows:

[0010] A rolled contact element, wherein the rolled contact element is formed by spirally rolling a metal strip into a cylindrical helical spring structure, wherein a first contact portion and a second contact portion that can be sequentially connected after being compressed are provided between two adjacent layers of the helical spring structure.

[0011] The beneficial effects are as follows: This invention innovatively coils a metal strip into a spiral spring structure, which has a simple overall structure that is easy to process, reducing processing costs and difficulty. At the same time, by setting corresponding blocking and conducting first and second contact parts between the upper and lower adjacent layers of the spiral spring structure, the first and second contact parts can be stably contacted when the coiled contact is compressed, thereby providing positioning guidance for the compression of the coiled contact and forming a conductive path from top to bottom along the generatrix of the spiral spring structure on the coiled contact, which greatly shortens and simplifies the conductive path, makes the overall structure more compact, and improves energy transmission efficiency.

[0012] As a further improvement, the first contact portion and the second contact portion are provided in multiple ways between adjacent layers of the helical spring structure, and the first contact portion is located above the second contact portion.

[0013] The beneficial effects are: setting up multiple contact structures facilitates the improvement of the positioning and guiding effect of the contact parts, and can further reduce the path resistance, shorten the conductive path, and improve the energy transmission efficiency.

[0014] As a further improvement, the first contact portion and the second contact portion are a matching concave-convex interlocking structure.

[0015] The beneficial effects are: by setting the first contact part and the second contact part as a matching concave-convex interlocking structure, it is easier to provide better positioning guidance when compressing and rolling the contact parts, and the structure is simple and the blocking effect is better.

[0016] As a further improvement, the concave-convex interlocking structure consists of trapezoidal protrusions evenly distributed on both sides of the metal strip, with at least one protrusion of the first contact portion located on one side of the spiral direction of the helical spring structure corresponding to the protrusion of the second contact portion.

[0017] The beneficial effects are: the trapezoidal protrusions facilitate guidance during the compression of the rolled contact, preventing the rolled contact from deviating, and at least one protrusion of the first contact part is located on one side of the spiral direction of the spiral spring structure corresponding to the protrusion of the second contact part, which can realize the blocking contact of the upper and lower contact parts during the compression of the rolled contact, ensuring the stability and smooth flow of the conductive path.

[0018] As a further improvement, the metal strip and the first and second contact portions are integrally stamped or etched.

[0019] The beneficial effects are: the one-piece stamping or etching forming process is simple and easy to operate, which can reduce processing costs and improve processing efficiency.

[0020] To achieve the above objectives, the technical solution for the connector provided by this invention is as follows:

[0021] A connector is provided with a support frame, the support frame having at least one mounting hole, through which a contact element is mounted. The contact element is a rolled contact element, which is formed by spirally rolling a metal strip to create a helical spring structure. The helical spring structure has a first contact portion and a second contact portion that are sequentially positioned above and below each other on at least one generatrix. The thickness of the support frame is not greater than the natural length of the rolled contact element, and at least one end of the rolled contact element extends beyond the end face of the support frame.

[0022] The beneficial effects are as follows: This invention innovatively coils a metal strip into a helical spring structure, which is simple in structure and easy to process, reducing processing costs and difficulty. Simultaneously, by setting corresponding first and second contact parts between adjacent layers of the helical spring structure, the first and second contact parts can maintain stable contact when the coiled contact is compressed, providing positioning guidance for compression and forming a conductive path along the generatrix of the helical spring structure from top to bottom on the coiled contact. This significantly shortens and simplifies the conductive path, making the overall structure more compact and improving energy transmission efficiency. Furthermore, the thickness of the support frame is no greater than the natural length of the coiled contact, and at least one end of the coiled contact extends beyond the end face of the support frame, ensuring stable connection of the coiled contact in actual use and facilitating bidirectional connection and conduction.

[0023] As a further improvement, the first contact portion and the second contact portion are provided in multiple ways between adjacent layers of the helical spring structure, and the first contact portion is located above the second contact portion.

[0024] The beneficial effects are: setting up multiple contact structures facilitates the improvement of the positioning and guiding effect of the contact parts, and can further reduce the path resistance, shorten the conductive path, and improve the energy transmission efficiency.

[0025] As a further improvement, the first contact portion and the second contact portion are a matching concave-convex interlocking structure.

[0026] The beneficial effects are: by setting the first contact part and the second contact part as a matching concave-convex interlocking structure, it is easier to provide better positioning guidance when compressing and rolling the contact parts, and the structure is simple and the blocking effect is better.

[0027] As a further improvement, the concave-convex interlocking structure consists of trapezoidal protrusions evenly distributed on both sides of the metal strip, with at least one protrusion of the first contact portion located on one side of the spiral direction of the helical spring structure corresponding to the protrusion of the second contact portion.

[0028] The beneficial effects are: the trapezoidal protrusions facilitate guidance during the compression of the rolled contact, preventing the rolled contact from deviating, and at least one protrusion of the first contact part is located on one side of the spiral direction of the spiral spring structure corresponding to the protrusion of the second contact part, which can realize the blocking contact of the upper and lower contact parts during the compression of the rolled contact, ensuring the stability and smooth flow of the conductive path.

[0029] As a further improvement, the metal strip and the first and second contact portions are integrally stamped or etched.

[0030] The beneficial effects are: the one-piece stamping or etching forming process is simple and easy to operate, which can reduce processing costs and improve processing efficiency. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the rolled contact element in connector embodiment 1 of the present invention;

[0032] Figure 2 for Figure 1 A schematic diagram of a local structure of the rolled contact element during compression.

[0033] Figure 3 for Figure 1 A schematic diagram of the metal strip blank structure of the rolled contact component shown;

[0034] Figure 4 This is a schematic diagram of the overall structure of the connector;

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Rolled contact element; 11. First contact part; 12. Second contact part; 2. Support frame. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] The present invention will be further described in detail below with reference to the embodiments.

[0039] Specific embodiment 1 of the connector provided by the present invention:

[0040] like Figure 4 As shown, the connector provided in this embodiment has a support frame 2, and multiple mounting holes are evenly opened in the support frame 2. A rolled contact 1 is installed through the mounting holes. The rolled contact 1 is as follows: Figure 1 As shown, a spiral spring structure is formed by spirally winding metal strips. This invention innovatively uses a spirally wound metal strip to form a spiral spring structure to serve as an elastic contact element. Its overall structure is simpler and easier to process, which reduces processing costs and also reduces processing difficulty compared to extruding and winding beryllium copper wire into a rough button.

[0041] The helical spring-type busbar has multiple first contact parts 11 and second contact parts 12 that are sequentially arranged to block and conduct electricity between adjacent layers, such as... Figure 2 As shown, when compressed, the first contact portion 11 and the second contact portion 12 maintain stable contact, thereby providing positioning guidance for the compression of the rolled contact 1. A top-to-bottom conductive path is formed along the straight line where the first contact portion 11 and the second contact portion 12 connect, significantly shortening and simplifying the original spiral conductive path into a straight path. This results in a more compact overall structure and improved energy transmission efficiency. Furthermore, the thickness of the support frame 2 is less than the natural length of the rolled contact 1, allowing one end of the rolled contact 1 to extend beyond the end face of the support frame 2 for compression contact, thus ensuring a stable connection of the rolled contact 1 in actual use.

[0042] like Figure 3 As shown, in this embodiment, the metal strip and the first contact portion 11 and the second contact portion 12 are integrally stamped and rolled to form the rolled contact part 1, which simplifies the processing technology and makes it easy to operate, thereby reducing processing costs and improving processing efficiency.

[0043] In this embodiment, the first contact portion 11 and the second contact portion 12 are interlocking structures composed of matching, spaced trapezoidal protrusions. This facilitates better positioning and guidance during the compression and rolling of the contact element 1, preventing the contact element 1 from skewing during compression. Furthermore, its structure is simple and provides better stopping effect. The first contact portion 11 has two protrusions located on both sides of the protrusions of the second contact portion 12, facilitating the stopping contact between the upper and lower contact portions and ensuring a stable and unobstructed conductive path.

[0044] In this embodiment, the first contact portion 11 and the second contact portion 12 are distributed on two symmetrical side generatrices of the helical spring structure to improve the positioning and guiding effect of the contact portion and further reduce the path resistance and improve the energy transmission efficiency.

[0045] Specific embodiment 2 of the connector provided by the present invention:

[0046] In the connector embodiment 1 of the present invention, the support frame 2 has multiple mounting holes. In this embodiment, the support frame 2 may have one or more mounting holes depending on the specific usage requirements.

[0047] Specific embodiment 3 of the connector provided by the present invention:

[0048] In the connector embodiment 1 of the present invention, one end of the rolled contact 1 extends out of the end face of the support frame 2. In this embodiment, both ends of the rolled contact 1 extend out of the end face of the support frame 2, thereby facilitating bidirectional conduction of the connector.

[0049] Specific embodiment 4 of the connector provided by the present invention:

[0050] In the connector embodiment 1 of the present invention, multiple first contact portions 11 and second contact portions 12 are distributed between adjacent layers of the helical spring structure. In this embodiment, one or more first contact portions 11 and second contact portions 12 may also be distributed between adjacent layers of the helical spring structure, depending on specific requirements.

[0051] Specific embodiment 5 of the connector provided by the present invention:

[0052] In the connector embodiment 1 of the present invention, the first contact portion 11 and the second contact portion 12 are a matching concave-convex fitting structure. In this embodiment, the first contact portion 11 and the second contact portion 12 may also be a stepped structure that cooperates to block each other.

[0053] Specific embodiment 6 of the connector provided by the present invention:

[0054] In the connector embodiment 1 of the present invention, the concave-convex interlocking structure consists of trapezoidal protrusions evenly spaced on both sides of the metal strip, and at least one protrusion of the first contact portion 11 is located on one side of the spiral direction of the helical spring structure corresponding to the protrusion of the second contact portion 12. In this embodiment, the trapezoidal protrusions can also be replaced by the first contact portion 11 being a V-shaped protrusion and the second contact portion 12 being a V-shaped groove, or the concave and convex protrusions of the two can be interchanged, and there is no limitation on the specific distribution number of the trapezoidal protrusions or other concave-convex interlocking structures.

[0055] Specific embodiment 7 of the connector provided by the present invention:

[0056] In the connector embodiment 1 of the present invention, the metal strip and the first contact portion 11 and the second contact portion 12 are integrally stamped. In this embodiment, the metal strip and the first contact portion 11 and the second contact portion 12 may also be integrally etched or formed by other molding methods that have lower processing costs and are easier to process.

[0057] An embodiment of the rolled contact element in this invention:

[0058] The embodiment of the rolled contact is the rolled contact 1 described in any of the embodiments 1 to 7 of the connector described above, and will not be specifically described here.

[0059] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rolled contact element, characterized in that, The rolled contact is formed by spirally rolling a metal strip into a cylindrical spiral spring structure. The upper and lower adjacent layers of the spiral spring structure are provided with a first contact part and a second contact part that can be sequentially connected after being compressed. The first contact part and the second contact part are a matching concave-convex interlocking structure.

2. The rolled contact element according to claim 1, characterized in that, The first contact portion and the second contact portion are distributed in multiple ways between two adjacent layers of the helical spring structure, and the first contact portion is located above the second contact portion.

3. The rolled contact element according to claim 2, characterized in that, The metal strip, the first contact portion, and the second contact portion are integrally formed.

4. The rolled contact element according to claim 3, characterized in that, The concave-convex interlocking structure consists of trapezoidal protrusions evenly distributed on both sides of the metal strip, with at least one protrusion of the first contact portion located on one side of the spiral direction of the helical spring structure corresponding to the protrusion of the second contact portion.

5. The rolled contact element according to any one of claims 1-4, characterized in that, The metal strip and the first and second contact parts are integrally stamped or etched.

6. A connector, wherein the connector is provided with a support frame, the support frame having at least one mounting hole, and a contact element is mounted through the mounting hole, characterized in that, The contact element is a rolled contact element, which is formed by spirally rolling a metal strip into a cylindrical helical spring structure. The upper and lower adjacent layers of the helical spring structure are provided with a first contact part and a second contact part that can be sequentially connected after being compressed. The first contact part and the second contact part are a matching concave-convex interlocking structure. The thickness of the support frame is not greater than the natural length of the rolled contact element. At least one end of the rolled contact element extends out of the end face of the support frame.

7. The connector according to claim 6, characterized in that, The first contact portion and the second contact portion are distributed in multiple ways between two adjacent layers of the helical spring structure, and the first contact portion is located above the second contact portion.

8. The connector according to claim 7, characterized in that, The metal strip, the first contact portion, and the second contact portion are integrally formed.

9. The connector according to claim 8, characterized in that, The concave-convex interlocking structure consists of trapezoidal protrusions evenly distributed on both sides of the metal strip, with at least one protrusion of the first contact portion located on one side of the spiral direction of the helical spring structure corresponding to the protrusion of the second contact portion.

10. The connector according to any one of claims 6-9, characterized in that, The metal strip and the first and second contact parts are integrally stamped or etched.

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