Multi-pin coupler

Abstract

The utility model relates to a multi-pin coupler, which comprises a coupling upper seat, the bottom of the coupling upper seat is provided with a plugging cavity, the plugging cavity is internally provided with two pin groups which are arranged in parallel, one pin group comprises three heavy current pins which are arranged at equal intervals, the other pin group comprises more than four light current pins which are arranged at equal intervals, and the light current pins are arranged at equal intervals. The rear ends of the strong current pin and the weak current pin are integrally connected with the coupling upper seat through injection molding; according to the coupler, the strong current contact pin and the weak current contact pin are arranged on the two sides, mutual interference of strong current and weak current can be avoided, the pole number of the weak current is increased in a traditional coupler, weak current multi-path coupling is achieved, and a customer can increase the product function.

Description

Technical Field

[0001] The utility model relates to the field of couplers, in particular to a multi-pin coupler. Background Art

[0002] With the improvement of people's quality of life, healthy kitchen appliances such as wall breakers are becoming more and more popular. Traditional wall breakers generally include a base and a cup body. The cup body is detachably arranged on the base, and the base and the cup body are electrically connected through upper and lower couplers. With the rise of smart devices, many wall breakers on the market are currently equipped with intelligent control circuits to realize different functions of the wall breakers. They can collect and process information such as the heating temperature, motor speed, anti-overflow signal, water level, cup lid opening and closing signal of the wall breakers. Therefore, the applicant improves and perfects the coupler of the prior art and provides a new solution that can increase the number of weak electrodes for consumers to choose. Summary of the invention

[0003] The utility model aims to provide a multi-pin coupler with simple and reasonable structure, convenient installation and stable structure.

[0004] A multi-pin coupler includes a coupling upper seat, a plug-in cavity is provided at the bottom of the coupling upper seat, and is characterized in that: two groups of pin groups arranged parallel to each other are provided in the plug-in cavity, one of the pin groups includes three equally spaced high-current pins, and the other pin group includes more than four equally spaced low-current pins, and the rear ends of the high-current pins and the low-current pins are integrally connected to the coupling upper seat by injection molding.

[0005] The purpose of the utility model can also be solved by the following technical measures:

[0006] As a more specific solution, the high-current plug is a rectangular column structure, and a slanted introduction surface is provided at its front end; the low-current plug is a cylindrical structure, and a curved introduction surface is provided at its front end.

[0007] As a further solution, the coupling upper seat is extended with a number of high-voltage secondary bases corresponding to the number of high-voltage pins and a number of low-voltage secondary bases corresponding to the number of low-voltage pins;

[0008] The strong current secondary base is injection molded with a connection terminal, and the rear end of the strong current plug pin is injection molded in the strong current secondary base and electrically connected to the connection terminal;

[0009] A ring terminal is injection-molded and connected inside the weak-current secondary base, and the rear end of the weak-current plug pin is injection-molded inside the weak-current secondary base and electrically connected to the ring terminal.

[0010] As a further solution, a plurality of tight-fitting ribs extend from the inner wall surfaces around the plug-in cavity, the plurality of tight-fitting ribs extend along the depth direction of the plug-in cavity, and an inclined lower seat guide surface is provided at the front end of each tight-fitting rib.

[0011] As a further solution, the height of one of the three high-voltage plugs is greater than that of the other two high-voltage plugs.

[0012] As a further solution, it also includes a coupling lower seat coupled in the plug-in cavity, and the top of the coupling lower seat is provided with a plurality of sockets respectively adapted to the shapes of high-current pins and low-current pins, and the corresponding sockets in the coupling lower seat are provided with electrical contact pieces, and the high-current pins and low-current pins pass through the sockets to be electrically connected to the electrical contact pieces.

[0013] As a further solution, the inner cavity of the coupling lower seat is tightly connected to a contact piece mounting seat, and the contact piece mounting seat is provided with a plurality of mutually isolated mounting cavities, which are laterally open, and an electrical contact piece is installed in each mounting cavity, and the electrical contact piece is led out of the coupling lower seat through the open side of the mounting cavity.

[0014] As a further solution, an elastic waterproof sheet is pressed and fixed between the contact sheet mounting seat and the coupling lower seat. The elastic waterproof sheet is provided with a plurality of waterproof bosses that adapt to the shape of the sockets and protrude into each socket. The top of the waterproof boss is cut into a membrane petal that can be elastically opened and closed.

[0015] As a further solution, a limiting step surface is provided at the bottom of the coupling lower seat, and limiting protrusions extend from the four corners of the bottom of the contact piece mounting seat. After the contact piece mounting seat is installed in place, the limiting protrusions are abutted against the limiting step surface.

[0016] As a further solution, a pair of inverted blocks extend from opposite sides of the bottom of the contact piece mounting seat, and a buckle interface is provided at the bottom of the coupling lower seat corresponding to the inverted blocks, and the inverted blocks are buckled into the buckle interface to make the contact piece mounting seat and the coupling lower seat assembled and connected; a number of buckle pins that are only used for assembling the coupling lower seat extend downward from the bottom of the coupling lower seat, and the buckle interface is provided on the buckle pins.

[0017] The beneficial effects of the utility model are as follows:

[0018] The utility model discloses a multi-pin coupler, which arranges strong current pins and weak current pins on both sides, thereby avoiding mutual interference between strong current and weak current. In addition, the number of weak current poles is increased in the traditional coupler to realize weak current multi-channel coupling, so that customers can increase the functions of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the coupling upper seat structure in the utility model.

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the coupling upper seat in the utility model.

[0021] Figure 3 It is a schematic diagram of the structure of the strong current plug pin and the weak current plug pin in the utility model.

[0022] Figure 4 It is a schematic diagram of the exploded structure of the coupling upper seat and the coupling lower seat in the utility model.

[0023] Figure 5 It is a schematic diagram of the decomposed structure of the coupling lower seat in the utility model.

[0024] Figure 6 It is a schematic diagram of the exploded structure of the coupling lower seat, the elastic waterproof sheet and the contact sheet mounting seat in the utility model. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] like Figures 1 to 6 As shown, a multi-pin coupler includes a coupling upper seat 1, a plug-in cavity 101 is provided at the bottom of the coupling upper seat 1, and two groups of pin groups arranged parallel to each other are arranged in the plug-in cavity 101, wherein one pin group includes three equally spaced high-current pins 2, and the other pin group includes four equally spaced low-current pins 3, and the rear ends of the high-current pins 2 and the low-current pins 3 are integrally connected to the coupling upper seat 1 through injection molding; this coupler arranges the high-current pins 2 and the low-current pins 3 on both sides, which can avoid mutual interference between high and low current, and increases the number of low-current poles in the traditional coupler to achieve low-current multi-path coupling, so that customers can increase the functions of the product.

[0027] The high-current plug 2 is a rectangular column structure, and an inclined introduction surface 201 is provided at its front end; the low-current plug 3 is a cylindrical structure, and an arc-shaped introduction surface 301 is provided at its front end; the inclined introduction surface 201 and the arc-shaped introduction surface 301 both play a guiding role to improve the coupling efficiency of the coupler.

[0028] The coupling upper seat 1 is provided with a plurality of high-voltage secondary bases 102 corresponding to the number of high-voltage pins 2 and a plurality of low-voltage secondary bases 103 corresponding to the number of low-voltage pins 3;

[0029] The strong current secondary base 102 is injection molded with a connection terminal 5, and the rear end of the strong current pin 2 is injection molded in the strong current secondary base 102 and electrically connected to the connection terminal 5;

[0030] The weak-current secondary base 103 is injection-molded with a ring terminal 6 , and the rear end of the weak-current pin 3 is injection-molded in the weak-current secondary base 103 and electrically connected to the ring terminal 6 .

[0031] The above-mentioned weak current secondary base 103 and weak current secondary base 103 are used to increase the creepage distance between the strong current pin 2 and the weak current pin 3, thereby improving safety in addition to meeting safety regulations.

[0032] A plurality of tight-fitting ribs 4 extend from the inner wall surfaces around the plug-in cavity 101, and the plurality of tight-fitting ribs 4 extend along the depth direction of the plug-in cavity 101, and an inclined lower seat introduction surface 401 is provided at the front end of each tight-fitting rib 4; the tight-fitting ribs 4 mainly cooperate with the coupling lower seat 7, so that the coupling lower seat 7 can be tightly fitted in the plug-in cavity 101, and the coupling connection is firm and not easy to loosen.

[0033] One of the three high-voltage pins 2a is taller than the other two high-voltage pins 2b and 2c; the taller high-voltage pin 2 is mainly used to connect to the ground wire, which can meet the safety requirements of the coupler, and the other two high-voltage pins 2 are used to connect the live wire and the neutral wire respectively.

[0034] It also includes a coupling lower seat 7 coupled in the plug-in cavity 101, and a plurality of sockets 701 respectively adapted to the shapes of the high-current pins 2 and the low-current pins 3 are provided on the top of the coupling lower seat 7. The corresponding sockets 701 in the coupling lower seat 7 are provided with electrical contact pieces 8, and the high-current pins 2 and the low-current pins 3 pass through the sockets 701 and are electrically connected to the electrical contact pieces 8; after the coupling lower seat 7 and the coupling upper seat 1 are coupled, the high-current pins 2 and the low-current pins 3 form an electrical circuit with the electrical contact pieces 8.

[0035] The inner cavity of the coupling lower seat 7 is tightly connected with a contact piece mounting seat 9, and a plurality of mutually isolated mounting cavities 901 are provided on the contact piece mounting seat 9. The mounting cavity 901 is open laterally, and an electric contact piece 8 is installed in each mounting cavity 901, and the electric contact piece 8 is led out of the coupling lower seat 7 through the open side of the mounting cavity 901; the contact piece mounting seat 9 can separate the electric contact pieces 8 from each other, and position and install the electric contact pieces 8, while avoiding the problem of power jumping between the electric contact pieces 8.

[0036] An elastic waterproof sheet 10 is pressed and fixed between the contact sheet mounting seat 9 and the coupling lower seat 7. The elastic waterproof sheet 10 is provided with a plurality of waterproof bosses 1001 which are adapted to the shapes of the sockets 701 and protrude into the sockets 701. The tops of the waterproof bosses 1001 are cut into elastically openable and closable membrane petals 1002. The elastic waterproof sheet 10 can improve the dustproof and waterproof capabilities of the coupling lower seat 7.

[0037] In addition, a plurality of positioning holes 1003 are provided on the elastic waterproof sheet 10, and a positioning protrusion 704 that cooperates with the plurality of positioning holes extends from the top of the coupling lower seat 7.

[0038] The bottom of the coupling lower seat 7 is provided with a limiting step surface 702, and the four corners of the bottom of the contact piece mounting seat 9 extend with limiting protrusions 902. After the contact piece mounting seat 9 is installed in place, the limiting protrusions 902 abut against the limiting step surface 702; the assembly is simple and the assembly efficiency is improved.

[0039] A pair of undercut blocks 903 extend from opposite sides of the bottom of the contact piece mounting seat 9, and a buckle interface 703 is provided at the bottom of the coupling lower seat 7 corresponding to the undercut blocks 903. The undercut blocks 903 are buckled into the buckle interface 703 to make the contact piece mounting seat 9 and the coupling lower seat 7 assembled and connected; the contact piece mounting seat 9 is assembled and fixed by buckling, which has the advantages of firm and reliable connection, simple structure and easy assembly.

[0040] A plurality of buckle pins 11 for assembling the coupling lower seat 7 extend downward from the bottom of the coupling lower seat 7 , and the buckle interface 703 is provided on the buckle pins 11 ; the coupling lower seat 7 is mounted on the base of the electrical appliance through the buckle pins 11 .

[0041] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A multi-pin coupler, comprising a coupling upper seat (1), wherein a plug-in cavity (101) is provided at the bottom of the coupling upper seat (1), characterized in that The plug-in cavity (101) is provided with two groups of plug pins arranged in parallel with each other, wherein one plug pin group comprises three high-current plug pins (2) arranged at equal intervals, and the other plug pin group comprises four or more low-current plug pins (3) arranged at equal intervals, and the rear ends of the high-current plug pins (2) and the low-current plug pins (3) are integrally connected to the coupling upper seat (1) by injection molding.

2. A multi-pin coupler according to claim 1, characterized in that The high-current plug pin (2) is a rectangular column structure, and a front end thereof is provided with an inclined introduction surface (201); the low-current plug pin (3) is a cylindrical structure, and a front end thereof is provided with an arc-shaped introduction surface (301).

3. A multi-pin coupler according to claim 1, characterized in that : Extending from the coupling upper seat (1) are a plurality of high-current secondary bases (102) corresponding to the number of high-current plug pins (2) and a plurality of low-current secondary bases (103) corresponding to the number of low-current plug pins (3); The high-voltage secondary base (102) is injection-molded with a connection terminal (5), and the rear end of the high-voltage plug pin (2) is injection-molded in the high-voltage secondary base (102) and is electrically connected to the connection terminal (5); A ring terminal (6) is injection-molded and connected inside the weak-current secondary base (103); the rear end of the weak-current plug pin (3) is injection-molded inside the weak-current secondary base (103) and is electrically connected to the ring terminal (6).

4. A multi-pin coupler according to claim 1, characterized in that A plurality of tight-fitting convex ribs (4) extend from the inner wall surfaces around the plug-in cavity (101), the plurality of tight-fitting convex ribs (4) extend along the depth direction of the plug-in cavity (101), and an inclined lower seat guide surface (401) is provided at the front end of each tight-fitting convex rib (4).

5. A multi-pin coupler according to claim 1, characterized in that : The height of one of the three high-voltage plug pins (2) is greater than that of the other two high-voltage plug pins (2).

6. A multi-pin coupler according to any one of claims 1 to 5, characterized in that The invention also comprises a coupling lower seat (7) coupled in the plug-in cavity (101), the top of the coupling lower seat (7) being provided with a plurality of sockets (701) respectively adapted to the shapes of the strong current plug pins (2) and the weak current plug pins (3), the coupling lower seat (7) being provided with electrical contact sheets (8) corresponding to the sockets (701), the strong current plug pins (2) and the weak current plug pins (3) passing through the sockets (701) to be electrically connected to the electrical contact sheets (8).

7. A multi-pin coupler according to claim 6, characterized in that The inner cavity of the coupling lower seat (7) is tightly connected to a contact piece mounting seat (9), and the contact piece mounting seat (9) is provided with a plurality of mutually isolated mounting cavities (901), the mounting cavities (901) are laterally open, and an electrical contact piece (8) is mounted in each mounting cavity (901), and the electrical contact piece (8) is led out of the coupling lower seat (7) through the open side of the mounting cavity (901).

8. A multi-pin coupler according to claim 7, characterized in that An elastic waterproof sheet (10) is pressed and fixed between the contact sheet mounting seat (9) and the coupling lower seat (7), and the elastic waterproof sheet (10) is provided with a plurality of waterproof bosses (1001) that are adapted to the shapes of the plug holes (701) and protrude into the plug holes (701), and a membrane flap (1002) that can be elastically opened and closed is cut out of the top of the waterproof boss (1001).

9. A multi-pin coupler according to claim 7, characterized in that The bottom of the coupling lower seat (7) is provided with a limiting step surface (702), and the four corners of the bottom of the contact piece mounting seat (9) extend with limiting protrusions (902). After the contact piece mounting seat (9) is installed in place, the limiting protrusions (902) are supported on the limiting step surface (702).

10. A multi-pin coupler according to claim 7, characterized in that A pair of undercut blocks (903) extend from opposite sides of the bottom of the contact piece mounting seat (9); a buckle interface (703) is provided at the bottom of the coupling lower seat (7) corresponding to the undercut blocks (903); the undercut blocks (903) are buckled into the buckle interface (703) so that the contact piece mounting seat (9) and the coupling lower seat (7) are assembled and connected; a plurality of buckle pins (11) for assembling the coupling lower seat (7) are extended downward from the bottom of the coupling lower seat (7); the buckle interface (703) is provided on the buckle pins (11).

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