Multi-contact inner spring and sheet type contact element

Abstract

The utility model discloses a multi-contact inner spring and a sheet-type contact piece. The inner spring comprises contact assemblies which are oppositely arranged, and one ends of the contact assemblies are connected through a connecting section to form a U-shaped structure. The contact assembly comprises a first end belt and a second end belt which are oppositely arranged at an interval; one side close to the connecting section is a first end belt; the first end belt and the second end belt are connected with each other through a connecting rib, and a plurality of elastic cantilevers are arranged between the first end belt and the second end belt; the fixed end of the elastic cantilever is connected to the first end belt, and the free end of the elastic cantilever extends towards the second end belt and inclines towards the contact assembly on the other side. And the free end is provided with an inward concave contact part. The utility model has the advantages of simple structure, strong current-carrying capability and long service life.

Description

Technical Field

[0001] This utility model relates to the field of electrical connectors, specifically a multi-contact inner spring and a sheet contact. Background Technology

[0002] With the continuous development of the communications field, the functionality and integration of communication equipment have been constantly improving. This has led to increasingly higher requirements for the power supply of communication equipment, and placed higher demands on the current carrying capacity per unit area of ​​electrical connectors. To meet the requirements of miniaturization and high integration of communication equipment, electrical connectors must not only meet the current carrying capacity per unit area requirement, but also have a small size to meet the requirements of use in confined spaces. In practical use, electrical connectors consist of two mating connectors, one with a plate contact that is a pin contact, and the other with a plate contact that is a socket contact. For example, Chinese patent literature discloses a "plate contact and electrical connector using the plate contact" (Publication No. CN104332764A, Publication Date February 4, 2015), which discloses a plate contact and an electrical connector using the plate contact: the plate contact in this patent is a pin contact. Specifically, the plate contact includes two conductive plates. The front parts of the two conductive plates together form the insertion part of the contact, and the rear parts are arranged opposite to each other and connected by a crossbeam at one edge to form an assembly part of the contact for fixed engagement with the insulator of the electrical connector. The crossbeam and the corresponding parts of the two conductive plates together form a U-shape. The assembly part is provided with upper and lower stop barbs for upper and lower stop engagement with the insulator of the electrical connector and front and rear stop barbs for front and rear stop engagement with the insulator of the electrical connector.

[0003] In practical applications, such as server power supplies, power connectors with small overall size, high current carrying capacity, and high power density are required. The aforementioned surface-mount contacts cannot meet the increasingly higher current carrying capacity demands. Summary of the Invention

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a multi-contact inner spring and a sheet contact that is simple in structure, has strong current carrying capacity, and has a long service life.

[0005] The technical objective of this utility model is achieved through the following technical solution:

[0006] A multi-contact inner spring includes contact components arranged opposite each other, with one end of the contact components connected to each other by a connecting section to form a U-shaped structure; the contact components include a first end strip and a second end strip arranged at intervals opposite each other; the first end strip is located near the connecting section; the first end strip and the second end strip are connected to each other by a connecting rib, and multiple elastic cantilever arms are provided between the first end strip and the second end strip; the fixed end of each elastic cantilever arm is connected to the first end strip, and its free end extends toward the second end strip and is inclined toward the contact component on the other side; the free end is provided with an inwardly concave contact portion.

[0007] Preferably, the connecting ribs are multiple connecting ribs spaced apart between the first end strip and the second end strip, and the elastic cantilever is provided between adjacent connecting ribs.

[0008] Preferably, the fixed end of the elastic cantilever is wider, and the free end of the elastic cantilever is narrower.

[0009] Preferably, the second end strip has an n-shaped flange on the side facing the inner side of the U-shape.

[0010] Preferably, the contact components are a first contact component and a second contact component arranged opposite to each other; the opposite sides of the first contact component and the second contact component are provided with a plurality of contact protrusions.

[0011] Preferably, the contact protrusions are disposed on each connecting rib and / or spaced apart on the first end strip.

[0012] A sheet contact, wherein the sheet contact is a socket contact, characterized in that the sheet contact includes two spaced and oppositely arranged conductive sheets, the two conductive sheets are connected by multiple crossbeams at one edge, and an inner spring is provided on the inner side of one end of the sheet contact to cooperate with the insertion part of the pin contact, wherein the inner spring is a multi-contact inner spring as described in any one of the above.

[0013] Preferably, the sheet contact and the inner spring are detachably connected.

[0014] Preferably, the second end of the inner spring is provided with a fixing protrusion, and the conductive sheet of the sheet contact is provided with a through hole that mates with the fixing protrusion.

[0015] Preferably, the upper and lower ends of the conductive sheet of the sheet contact are provided with stop portions that abut against the connecting section of the inner spring.

[0016] Preferably, the conductive sheet is a first conductive sheet and a second conductive sheet arranged opposite to each other, and the opposite sides of the first conductive sheet and the second conductive sheet are respectively connected to the contact protrusions on the opposite sides of the first contact assembly and the second contact assembly of the inner spring.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The elastic cantilever and connecting rib of the inner spring in this utility model can participate in contact and current transmission at multiple points simultaneously. Therefore, the inner spring has many contact points, low contact resistance, and strong current carrying capacity. Furthermore, the use of multiple elastic cantilever arms makes insertion and removal smoother and extends service life compared to conventional plate-type contactors. Therefore, this technical measure has the advantages of low contact resistance, strong current carrying capacity, and longer service life.

[0019] 2. The second end of this utility model has an n-shaped flange facing the inner side of the U-shape. This technical measure ensures smooth insertion of the pin.

[0020] 3. The sheet contact of this utility model is a socket contact. The sheet contact includes two spaced-apart and oppositely arranged conductive sheets, which are connected by multiple crossbeams at one edge. An inner spring, which mates with the insertion portion of a pin contact, is provided on the inner side of one end of the sheet contact. This inner spring is a multi-contact inner spring. This technical measure eliminates the need for an elastic structure on the sheet contact, allowing the sheet contact to be made of a metal alloy with high conductivity and low mechanical properties, thereby increasing the current-carrying capacity of the sheet contact.

[0021] 4. The conductive sheet of this utility model consists of a first conductive sheet and a second conductive sheet arranged opposite to each other. The opposite sides of the first and second conductive sheets are respectively connected to the contact protrusions on the opposite sides of the first and second contact components of the inner spring. Using this technique, when the multi-contact inner spring is installed into the sheet contact component, and the pin of the pin contact component is inserted, the pin compresses the elastic cantilever of the inner spring, generating a compressive force to achieve contact between the pin and the inner spring. One inner spring contains multiple elastic cantileveres, ensuring reliable contact between the pin and the inner spring with low contact resistance. The contact protrusions connect the inner spring and the sheet contact component, with multiple points facing each other, achieving reliable contact with low contact resistance.

[0022] 5. The second end of the inner spring of this utility model is provided with a fixing protrusion, and the conductive sheet of the plate contact is provided with a through hole that mates with the fixing protrusion. This technical measure facilitates the installation and fixing of the inner spring.

[0023] 6. The conductive sheet of the sheet contact of this utility model has stop portions at its upper and lower ends that abut against the connecting section of the inner spring. This technical measure effectively improves the stability of the inner spring installed in the sheet contact and the stability of the sheet contact during use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 yes Figure 1 A schematic diagram of the structure of the multi-point inner spring;

[0026] Reference numerals: 1—Inner spring; 11—First end band; 111—First contact protrusion; 12—Second end band; 121—Fixing protrusion; 13—Connecting section; 14—Connecting rib; 141—Second contact protrusion; 15—Elastic cantilever; 151—Free end; 152—Contact part; 16—Flange;

[0027] 101—First contact assembly; 102—Second contact assembly;

[0028] 2—Plate contact; 21—First conductive sheet; 211—First stop portion; 22—Second conductive sheet; 221—Second stop portion; 23—Crossbeam; 231—First crossbeam; 232—Second crossbeam; 24—Pin; 25—Through hole; 26—Groove. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Example 1

[0033] like Figure 1 , Figure 2As shown, a multi-contact inner spring 1 includes contact components arranged opposite each other, with one end of the contact components connected by a connecting section 13 to form a U-shaped structure. The contact components include a first end strip 11 and a second end strip 12 arranged at intervals. The first end strip 11 is located closer to the connecting section 13. The first end strip 11 and the second end strip 12 are connected to each other by a connecting rib 14, and multiple elastic cantilever arms 15 are provided between the first end strip 11 and the second end strip 12. The fixed end of each elastic cantilever arm 15 is connected to the first end strip 11, and its free end 151 extends towards the second end strip 12 and is inclined towards the other contact component. The free end 151 has an inwardly recessed contact portion 152. In actual use, the second end strip 12, the elastic cantilever arms 15 of the inner spring 1, and the connecting rib 14 can simultaneously participate in contact and current transmission at multiple points. Therefore, the inner spring 1 has many contact points, low contact resistance, and strong current carrying capacity. Furthermore, the use of multiple elastic cantilever arms 15 makes insertion and removal smoother and extends the service life compared to conventional sheet contact elements 2. Therefore, this technical measure has the advantages of low contact resistance, strong current carrying capacity, and longer service life.

[0034] like Figure 1 As shown, the contact assembly includes a first contact assembly 101 and a second contact assembly 102 disposed opposite to each other, with one end of the first contact assembly 101 and the second contact assembly 102 connected by a connecting segment 13 to form a U-shaped structure. The first contact assembly 101 and the second contact assembly 102 respectively include a first end strip 11 and a second end strip 12 disposed opposite to each other; the side closer to the connecting segment 13 is the first end strip 11, and the side farther from the connecting segment 13 is the second end strip 12.

[0035] The first end strip 11 and the second end strip 12 are interconnected by connecting ribs 14, and multiple elastic cantilever arms 15 are provided between the first end strip 11 and the second end strip 12. In actual use, there are five connecting ribs 14 spaced apart between the first end strip 11 and the second end strip 12, and elastic cantilever arms 15 are provided between adjacent connecting ribs 14. Specifically, the first end strip 11 and the second end strip 12 of the first contact assembly 101 and the second contact assembly 102 are interconnected by five spaced connecting ribs 14, and elastic cantilever arms 15 are provided between adjacent connecting ribs 14. The inner spring 1 contains multiple elastic cantilever arms 15 to ensure reliable contact between the pin and the inner spring 1 and low contact resistance.

[0036] In practical use, the fixed end of the elastic cantilever 15 is wider and the free end 151 of the elastic cantilever 15 is narrower. This technical measure is beneficial for reliable contact.

[0037] The second end strip 12 has an n-shaped flange 16 facing the inner side of the U-shape. In actual use, the second end strip 12 of the first contact assembly 101 and the second contact assembly 102 has an n-shaped flange 16 in the middle. This technical measure can ensure that the pins can be smoothly inserted.

[0038] The first contact assembly 101 and the second contact assembly 102 have multiple contact protrusions on opposite sides. Specifically, these contact protrusions are provided on each connecting rib 14 and / or spaced apart on the first end strip 11. By providing contact protrusions, multiple point-to-surface contact points are achieved, realizing reliable contact with low contact resistance.

[0039] In this embodiment, the first end strips 11 of the first contact component 101 and the second contact component 102 are arranged opposite to each other, and four first contact protrusions 111 are respectively provided on the opposite side of the first end strips 11 of the first contact component 101 and the second contact component 102. These first contact protrusions 111 are spaced apart along the length direction of the first end strips 11. Each first contact protrusion 111 corresponds to the position of the elastic cantilever 15.

[0040] The connecting ribs 14 of the first contact assembly 101 and the second contact assembly 102 are arranged opposite to each other, and each of the connecting ribs 14 of the first contact assembly 101 and the second contact assembly 102 has a second contact protrusion 141 on its opposite side. In this embodiment, the second contact protrusion 141 is located on the side closer to the second end band 12. In actual use, the position of the second contact protrusion 141 on the connecting rib 14 is adjusted according to the actual situation.

[0041] Example 2

[0042] As shown in Figure 1, Figure 2 As shown, the other contents of this embodiment are the same as those of embodiment 1, except that: this embodiment provides a sheet contact 2, which is a socket contact. The sheet contact 2 includes two spaced and oppositely arranged conductive sheets. The two conductive sheets are connected by multiple crossbeams 23 at one edge. The inner side of one end of the sheet contact 2 is provided with an inner spring 1 that cooperates with the insertion part of the pin contact. The inner spring 1 is the multi-contact inner spring 1 in embodiment 1.

[0043] Specifically, the sheet contact 2 includes a first conductive sheet 21 and a second conductive sheet 22 arranged at intervals and opposite to each other, and the two conductive sheets are connected by two crossbeams 23 at their upper edges. A pin 24 is respectively provided on the lower side of one end of the first conductive sheet 21 and the second conductive sheet 22. The crossbeam 23 includes a first crossbeam 231 on one side of the pin 24 and a second crossbeam 232 on the side away from the pin 24. An inner spring 1 is provided on the inner side of the end of the sheet contact 2 away from the pin 24, which mates with the insertion portion of a pin contact. The insertion portion of the pin contact is generally a pin. This technical measure eliminates the need for an elastic structure on the sheet contact 2, allowing the sheet contact 2 to be made of a metal alloy with high conductivity and low mechanical properties, thereby increasing the current carrying capacity of the sheet contact 2.

[0044] The first conductive sheet 21 and the second conductive sheet 22 are respectively connected on opposite sides to the contact protrusions on opposite sides of the first contact assembly 101 and the second contact assembly 102 of the inner spring 1. Using this technique, when the multi-contact inner spring 1 is installed into the sheet contact 2, and the pin of the pin contact is inserted, the pin compresses the elastic cantilever 15 of the inner spring 1, generating a compressive force to achieve contact between the pin and the inner spring 1. One inner spring 1 contains multiple elastic cantilever 15s, ensuring reliable contact between the pin of the pin contact and the inner spring 1 with low contact resistance. The contact protrusions connect the inner spring 1 and the sheet contact 2, with multiple points facing each other, achieving reliable contact with low contact resistance.

[0045] In practical use, the plate contact 2 and the inner spring 1 are detachably connected. This technical measure facilitates installation and maintenance.

[0046] Specifically, the second end strip 12 of the inner spring 1 is provided with a fixing protrusion 121, and the conductive sheet of the plate contact 2 is provided with a through hole 25 that mates with the fixing protrusion 121. In actual use, two fixing protrusions 121 are spaced apart along the length of the second end strip 12 of the inner spring 1. The conductive sheet of the plate contact 2 is provided with two through holes 25 spaced apart along the width of the conductive sheet at the end away from the pin 24, which mate with the fixing protrusion 121. This technical measure facilitates the installation and fixation of the inner spring 1.

[0047] The conductive sheet of the plate contact 2 has stop portions at its upper and lower ends that abut against the connecting section 13 of the inner spring 1. In actual use, when the pin of the pin contact is inserted into the inner spring 1, it generates a pushing force on the inner spring 1. To ensure the inner spring 1 is more stably installed in the plate contact 2 and to prevent movement of the inner spring 1 due to excessive pushing force during pin insertion, stop portions are provided at the upper and lower ends of the conductive sheet to abut against the connecting section 13 of the inner spring 1. Two grooves 26 are respectively provided at the upper and lower ends of the first conductive sheet 21 and the second conductive sheet 22 near the connecting section 13 of the inner spring 1. A first stop portion 211 extending towards the second conductive sheet 22 is provided in the groove 26 of the first conductive sheet 21; a second stop portion 221 extending towards the first conductive sheet 21 is provided in the groove 26 of the second conductive sheet 22. The first stop portion 211 and the second stop portion 221 are arranged opposite each other and have a clearance fit. After the inner spring 1 is installed in the plate contact 2, the end of the connecting section 13 away from the first end band 11 abuts against the stop portion. This technical measure ensures that one end of the second end band 12 of the inner spring 1 is fixed in the plate contact 2 via the fixing protrusion 121, while the connecting section 13 away from the second end band 12 abuts against the stop portion of the plate contact 2; thereby effectively improving the stability of the inner spring 1 installed in the plate contact 2 and the stability of the plate contact 2 during use.

[0048] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A multi-contact inner spring, the inner spring comprising opposing contact components and one end of the contact components being connected by a connecting section to form a U-shaped structure; characterized in that, The contact assembly includes a first end strip and a second end strip that are spaced apart from each other; the first end strip is located on the side closer to the connecting section. The first end strip and the second end strip are connected to each other by connecting ribs, and multiple elastic cantilever arms are provided between the first end strip and the second end strip. The fixed end of the elastic cantilever is connected to the first end band, and its free end extends toward the second end band and is inclined toward the other side of the contact assembly. The free end is provided with an inwardly recessed contact portion.

2. The multi-contact inner spring according to claim 1, characterized in that, The connecting ribs are multiple connecting ribs spaced apart between the first end strip and the second end strip, and the elastic cantilever is provided between adjacent connecting ribs.

3. The multi-contact inner spring according to claim 1 or 2, characterized in that, The fixed end of the elastic cantilever is wider, and the free end of the elastic cantilever is narrower.

4. The multi-contact inner spring according to claim 1, characterized in that, The second end has an n-shaped flange on the side facing the inside of the U-shape.

5. The multi-contact inner spring according to claim 1, characterized in that, The contact components are a first contact component and a second contact component arranged opposite to each other; the opposite sides of the first contact component and the second contact component are provided with a plurality of contact protrusions.

6. The multi-contact inner spring according to claim 5, characterized in that, The contact protrusions are provided on each connecting rib and / or spaced apart on the first end band.

7. A sheet contact, wherein the sheet contact is a socket contact, characterized in that, The sheet contact includes two spaced and oppositely arranged conductive sheets, which are connected by multiple crossbeams at one edge. The inner side of one end of the sheet contact is provided with an inner spring that cooperates with the insertion part of the pin contact. The inner spring is a multi-contact inner spring as described in any one of claims 1 to 6.

8. The sheet contact element according to claim 7, characterized in that, The plate-type contact element is detachably connected to the inner spring.

9. The sheet contact element according to claim 8, characterized in that, The second end of the inner spring is provided with a fixing protrusion, and the conductive sheet of the sheet contact is provided with a through hole that mates with the fixing protrusion.

10. The sheet contact according to claim 7 or 9, characterized in that, The conductive sheet of the sheet contact has a stop portion at its upper and lower ends that abuts against the connecting section of the inner spring.

11. The sheet contact element according to claim 7, characterized in that, The conductive sheet consists of a first conductive sheet and a second conductive sheet arranged opposite to each other. The opposite sides of the first conductive sheet and the second conductive sheet are respectively connected to the contact protrusions on the opposite sides of the first contact assembly and the second contact assembly of the inner spring.

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