Coupler capable of preventing poor contact

Abstract

The utility model relates to a coupler for preventing poor contact, which comprises an upper coupler and a lower coupler, a plurality of conductors are arranged in the upper coupler, a plurality of conductive reeds are arranged in the lower coupler, and when the upper coupler is coupled with the lower coupler, the plurality of conductors are electrically contacted with the plurality of conductive reeds respectively. The free end of the conductive reed is provided with an electric contact salient point in contact with the conductor, and the surface of the electric contact salient point is provided with a rough structure; according to the coupler, oxidation films or stains on the surfaces of the electric conductors are scraped off through the protruding rough structures on the conductive reeds, poor contact between the electric conductors and the conductive reeds is avoided, and it is guaranteed that enough contact pressure can be kept.

Description

Technical Field

[0001] This utility model relates to the field of couplers, specifically a coupler that prevents poor contact. Background Technology

[0002] In existing health-preserving kettles and formula makers, electrical connection is achieved through the coupling between a conductor in the upper coupler and a conductive spring in the lower coupler. However, with prolonged use and the use of the kettle to cook various nourishing soups, mung bean paste, and medicinal herbs, food spills out, and the resulting sap flows onto the conductor in the upper coupler. This sap oxidizes, forming an oxide film on the conductor's surface, leading to poor contact between the conductor and the conductive spring, insufficient contact pressure, or even rendering the kettle unusable. Therefore, the applicant has improved and perfected the coupler structure to solve the above problems, making it a suitable choice for consumers. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned existing problems and provide a simple and reasonable coupler that prevents poor contact.

[0004] A coupler designed to prevent poor contact includes an upper coupler and a lower coupler. The upper coupler contains a plurality of conductors, and the lower coupler contains a plurality of conductive springs. When the upper and lower couplers are coupled, the plurality of conductors make electrical contact with the plurality of conductive springs. The free end of each conductive spring has an electrical contact protrusion that contacts the conductor, and the surface of the electrical contact protrusion has a rough structure.

[0005] The objective of this utility model can also be achieved by the following technical measures:

[0006] As a more specific embodiment, the rough structure is a textured surface formed by mechanical or stamping equipment; the textured surface includes knurling.

[0007] As a further embodiment, the rough structure includes a plurality of evenly arranged scraping bumps.

[0008] As a further embodiment, one of the conductors is a central pin, and one of the conductive springs is a retaining spring, the retaining spring comprising two elastic springs arranged opposite each other, the central pin being inserted between the two elastic springs; the free end of each elastic spring is bent outward to form a clamping corner, the clamping corner constituting an electrical contact protrusion.

[0009] As a further embodiment, the elastic spring includes an inclined lever arm portion and a bent portion, with a clamping corner formed at the junction between the lever arm portion and the bent portion; the inner surface of the clamping corner includes a first inclined surface on the lever arm portion and a second inclined surface on the bent portion; a portion of the rough structure is disposed on the first inclined surface and another portion is disposed on the second inclined surface.

[0010] As a further embodiment, the bottom end of the central pin is provided with an inlet cone surface. At the instant the central pin is inserted into the spring, the inlet cone surface contacts the rough structure on the second inclined surface. After the central pin is inserted into the spring, the outer surface of the central pin contacts the rough structure on the first inclined surface.

[0011] As a further embodiment, the spring also includes two support parts and a fixing part. The two support parts are fixedly connected at intervals through a connecting part on one side. The two lever arms are respectively connected to the upper side of the two support parts, and one of the support parts is integrally connected to one side of the fixing part. The other side of the fixing part is integrally bent with a wiring terminal.

[0012] As a further embodiment, the remaining conductors include several conductive copper rings, which are concentric but of different diameters and arranged around the outer periphery of the central pin. The remaining conductive springs each include an elastic spring, the free end of which is connected to a contact block, which forms an electrical contact protrusion.

[0013] As a further embodiment, the bottom surface of the lower coupler extends with multiple insulating partitions, which are arranged between two adjacent conductive springs.

[0014] As a further embodiment, the lower coupler includes a lower coupling seat, on which are provided several concentric coupling protrusions of different diameters, and the coupling protrusions are spaced apart to form several insertion slots. The free end of each conductive spring is elastically disposed in its respective insertion slot, and the conductive copper ring and the central pin are inserted into the insertion slot.

[0015] The beneficial effects of this utility model are as follows:

[0016] This utility model discloses a coupler that prevents poor contact. During use, the coupler utilizes the raised, rough structure on the conductive spring to scrape off the oxide film or dirt on the surface of the conductor, preventing poor contact between the conductor and the conductive spring and ensuring sufficient contact pressure. This allows the coupler to achieve a self-cleaning function of the oxide film, eliminating the need for manual intervention by the consumer and saving time and effort. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cross-sectional structure of the coupler in this utility model.

[0018] Figure 2This is a schematic diagram of the central insert and spring structure of this utility model.

[0019] Figure 3 This is a schematic diagram of an elastic spring structure in this utility model.

[0020] Figure 4 This is a schematic diagram of the knurled structure of the remaining conductive springs in this utility model.

[0021] Figure 5 This is an exploded structural diagram of the upper coupler and the lower coupler in this utility model.

[0022] Figure 6 This is a schematic diagram of the lower coupler structure in this utility model.

[0023] Figure 7 This is a schematic diagram of the second embodiment of the rough structure in this utility model. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1:

[0025] See Figures 1 to 6 As shown, a coupler for preventing poor contact includes an upper coupler 1 and a lower coupler 2. The upper coupler 1 contains a plurality of conductors, and the lower coupler 2 contains a plurality of conductive springs 3. When the upper coupler 1 and the lower coupler 2 are coupled, the plurality of conductors respectively make electrical contact with the plurality of conductive springs 3. The free end of the conductive spring 3 is provided with an electrical contact protrusion 4 that contacts the conductor. The surface of the electrical contact protrusion 4 is provided with a rough structure. The rough structure is a textured surface formed by mechanical equipment or stamping equipment. The textured surface includes knurling 5.

[0026] When used by consumers, the kettle with the upper coupler 1 is frequently rotated back and forth, causing the conductor to rotate relative to the conductive spring 3. This coupler uses the raised rough structure on the conductive spring 3 to rub the outer surface of the conductor to scrape off the oxide film or dirt on the surface of the conductor, avoiding poor contact between the conductor and the conductive spring 3, ensuring that sufficient contact pressure is maintained, so that the coupler can achieve the function of self-cleaning oxide film without the need for consumers to do it themselves, saving time and effort.

[0027] In this embodiment, the plurality of conductors includes a central pin 61 and several conductive copper rings 62. The several conductive copper rings 62 are concentrically arranged on the outer periphery of the central pin 61 but with different diameters. Among the plurality of conductive springs 3, at least one has a structure different from the other springs 7. In actual use, it was found that the conductive copper rings 62 can achieve electrical contact on all four sides, and the contact position is different after each coupling. However, after the central pin 61 comes into contact with food, an oxide film is easily formed on its entire outer surface. Therefore, the oxide film causes poor contact. The central pin 61 is more serious than the conductive copper rings 62. Therefore, the rough structure is mainly used on the springs 7.

[0028] The spring 7 includes two elastic springs 71 arranged opposite each other, and the central pin 61 is inserted between the two elastic springs 71; the free end of each elastic spring 71 is bent outward to form a clamping corner 72, the clamping corner 72 constitutes an electrical contact protrusion 4, and the rough structure is provided on the inner surface of the clamping corner 72.

[0029] The elastic spring 71 includes an inclined lever arm portion 711 and a bent portion 712, and a clamping corner 72 is formed at the joint between the lever arm portion 711 and the bent portion 712; the inner surface of the clamping corner 72 includes a first inclined surface 701 on the lever arm portion 711 and a second inclined surface 702 on the bent portion 712; a portion of the rough structure is disposed on the first inclined surface 701 and the other portion is disposed on the second inclined surface 702.

[0030] The bottom end of the central pin 61 is provided with an inlet cone surface 611. At the moment the central pin is inserted into the spring 7, the inlet cone surface 611 contacts the rough structure on the second inclined surface 702. After the central pin is inserted into the spring 7, the outer surface of the central pin contacts the rough structure on the first inclined surface 701. Since the inlet cone surface 611 is located at the bottom end of the central pin 61, it is most likely to form an oxide film. Therefore, at the moment the spring 7 is inserted, the oxide film on the inlet cone surface is scraped off by the rough structure on the second inclined surface 702, ensuring that the entire outer surface of the central pin 61 can be cleaned.

[0031] The spring 7 also includes two support parts 73 and a fixing part 74. The two support parts 73 are fixedly connected at intervals by a connecting part 75 on one side. Two lever parts 711 are respectively connected to the upper side of the two support parts 73, and one of the support parts 73 is integrally connected to one side of the fixing part 74. The other side of the fixing part 74 is integrally bent with a terminal 76.

[0032] When other conductive springs 3 also need to be arranged with a rough structure, the conductive springs 3 in this part all include an elastic spring 71, the free end of the elastic spring 71 is connected to a contact block 77, the contact block 77 constitutes an electrical contact protrusion 4, and the rough structure is set on the inner surface of the contact block 77.

[0033] The bottom surface of the lower coupler 2 extends with multiple insulating partitions 24, which are arranged between two adjacent conductive springs 3. The insulating partitions 24 can increase the creepage distance between the conductive springs 3 and between the conductive springs 3 and the insert springs 7, thereby improving the safety factor of the coupler.

[0034] The lower coupler 2 includes a lower coupling seat 21, on which several concentric coupling protrusions 22 of different diameters are provided, and several insertion slots 23 are formed between the coupling protrusions 22 at intervals. The free end of each conductive spring 3 is elastically disposed in its respective insertion slot 23. The conductive copper ring 62 and the central pin 61 are inserted into the insertion slots 23. The structures of the lower coupler 2 and the upper coupler 1 described above are both existing technologies and will not be described in detail here. Example 2:

[0035] Example 2 differs from Example 1 in that: See Figure 7 As shown, the rough structure includes a plurality of evenly arranged scraping protrusions 8; the scraping protrusions 8 can be formed on the elastic spring 71 by spot welding, welding or stamping; the structure of the scraping protrusions 8 can also scrape off the oxide film on the central pin.

[0036] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A coupler for preventing poor contact, comprising an upper coupler and a lower coupler, wherein the upper coupler contains a plurality of conductors and the lower coupler contains a plurality of conductive springs, wherein when the upper coupler and the lower coupler are coupled, the plurality of conductors respectively make electrical contact with the plurality of conductive springs, characterized in that: The free end of the conductive spring is provided with an electrical contact protrusion that contacts the conductor, and the surface of the electrical contact protrusion is provided with a rough structure.

2. The coupler for preventing poor contact according to claim 1, characterized in that: The rough structure is a textured surface formed by mechanical or stamping equipment; the textured surface includes knurling.

3. The coupler for preventing poor contact according to claim 1, characterized in that: The rough structure includes a plurality of evenly arranged scraping bumps.

4. The coupler for preventing poor contact according to claim 1, characterized in that: One of the conductors is a center pin, and one of the conductive springs is a spring. The spring includes two elastic springs arranged opposite each other, and the center pin is inserted between the two elastic springs. The free end of each elastic spring is bent outward to form a clamping corner, and the clamping corner constitutes an electrical contact protrusion.

5. A coupler for preventing poor contact according to claim 4, characterized in that: The elastic spring includes an inclined lever arm and a bent portion, and a clamping corner is formed at the joint between the lever arm and the bent portion; the inner surface of the clamping corner includes a first inclined surface on the lever arm and a second inclined surface on the bent portion; a portion of the rough structure is disposed on the first inclined surface and the other portion is disposed on the second inclined surface.

6. A coupler for preventing poor contact according to claim 5, characterized in that: The bottom end of the central pin is provided with an inlet cone surface. At the moment the central pin is inserted into the spring, the inlet cone surface contacts the rough structure on the second inclined surface. After the central pin is inserted into the spring, the outer surface of the central pin contacts the rough structure on the first inclined surface.

7. A coupler for preventing poor contact according to claim 5, characterized in that: The spring also includes two support parts and a fixing part. The two support parts are fixedly connected at intervals through a connecting part on one side. The two lever arms are respectively connected to the upper side of the two support parts, and one of the support parts is integrally connected to one side of the fixing part. The other side of the fixing part is integrally bent with a terminal block.

8. A coupler for preventing poor contact according to claim 4, characterized in that: The remaining conductors include several conductive copper rings, which are concentric but of different diameters and arranged around the outer periphery of the central pin. The remaining conductive springs each include an elastic spring, and the free end of the elastic spring is connected to a contact block, which forms an electrical contact protrusion.

9. A coupler for preventing poor contact according to claim 1, characterized in that: The bottom surface of the lower coupler extends with multiple insulating partitions, which are arranged between two adjacent conductive springs.

10. A coupler for preventing poor contact according to claim 8, characterized in that: The lower coupler includes a lower coupling seat, which has several concentric coupling protrusions of different diameters, and the coupling protrusions are spaced apart to form several insertion slots. The free end of each conductive spring is elastically disposed in its respective insertion slot. The conductive copper ring and the central pin are inserted into the insertion slot.

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