Butt joint assembly capable of preventing sparking and current impact

Abstract

The utility model relates to the technical field of electric power installation, in particular to a butt joint assembly capable of preventing sparking and current impact, which comprises a first butt joint piece, a second butt joint piece, an auxiliary terminal and an impedance circuit, the auxiliary terminal and the impedance circuit are both arranged in the second butt joint piece, the auxiliary terminal comprises a sleeve, an elastic piece and a contact pin, the elastic piece is arranged in the sleeve, one end of the contact pin extends into the sleeve and abuts against the elastic piece, the contact pin is in sliding fit with the sleeve, the sleeve is connected with the second butt joint piece through the impedance circuit, and the first butt joint piece keeps abutting against the other end of the contact pin in the moving process relative to the second butt joint piece; according to the utility model, the realization method is simple, mechatronics is realized, and functions of sparking prevention and current impact prevention are realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to power installation technical field, especially a kind of butt joint assembly of preventing sparking and current impact. BACKGROUND

[0002] In power installation, often need to butt joint or plug-in (as shown in Figure 1 And Figure 2 Indicated) the two ports with potential difference and with capacitive load, and instantaneous impact current will be generated in butt joint or plug-in process, and it appears as electric spark when installing contact, not only affect circuit life, but also affect operation safety. The generation of electric spark is mainly because there is voltage difference △Vin between power supply or battery voltage Vin and capacitor voltage Vout when two ports butt joint or plug-in (i.e. K1 is closed).

[0003] At present, the following solutions are mainly used for electric spark and current impact problem: (1) appropriately reduce the capacity of equivalent capacity C of capacitive load, but in some functional circuits, equivalent capacity C is determined by functional circuit, and will not be adjusted in capacity value because of access problem. (2) special device is used to pre-charge equivalent capacity C to about equal to input voltage Vin, and this kind of implementation method needs to rely on tooling, but the implementation method is relatively complex, and it cannot be realized after leaving tooling. (3) equivalent capacity C is connected after access is completed, and this method needs to increase additional functional circuit, and the implementation method is also complex, and the functional circuit only plays a role when accessing, resulting in power consumption of circuit. (4) short-time electric spark or certain risk is tolerated, which can be accepted when accessing small capacity, but with the increasing of access source capacity, the degree of inappropriateness will be more and more large, and the risk will be more and more high. INVENTION CONTENTS

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art, and provide a butt joint assembly which is simple in implementation method, mechatronic, and has the functions of preventing sparking and current impact.

[0005] The technical scheme adopted by the utility model to solve the technical problem is: a butt joint assembly for preventing sparking and current impact, comprising a first butt joint piece, a second butt joint piece, an auxiliary terminal and an impedance circuit, the auxiliary terminal and the impedance circuit are arranged in the second butt joint piece, the auxiliary terminal comprises a sleeve, an elastic piece and a contact pin, the elastic piece is arranged in the sleeve, one end of the contact pin extends into the sleeve and abuts against the elastic piece, the contact pin is in sliding fit with the sleeve, the sleeve is connected with the second butt joint piece through the impedance circuit, and the first butt joint piece abuts against the other end of the contact pin during movement relative to the second butt joint piece.

[0006] Further, a mounting groove is formed in the lower part of the second connector, and a through hole is vertically formed in the top end of the second connector and communicates with the mounting groove, the sleeve is vertically arranged in the mounting groove, and the end of the contact pin away from the elastic member penetrates through the through hole and protrudes from the top surface of the second connector, and an insulating sleeve is arranged between the contact pin and the through hole.

[0007] Further, a circular cone cavity is arranged in the lower part of the second connector, and a circular hole is formed in the top end of the second connector and communicates with the circular cone cavity, a groove is transversely formed in the joint of the circular hole and the circular cone cavity, and the sleeve is transversely arranged in the groove, the end of the contact pin away from the elastic member is located in the vertical projection of the circular cone cavity, and the lower part of the first connector is in the shape of a circular cone matching the circular cone cavity.

[0008] Further, the impedance circuit is a resistor R1.

[0009] Further, the impedance circuit comprises a resistor R2 and an inductor L1, and the resistor R2 is in series with the inductor L1.

[0010] Further, the impedance circuit comprises a resistor R3, a thermistor R4 and a capacitor C1, the resistor R3 is in series with the thermistor R4, and the capacitor C1 is in parallel with the thermistor R4.

[0011] Further, the impedance circuit comprises a resistor R5, an inductor L2 and a capacitor C2, the resistor R5 is in series with the inductor L2, and the capacitor C2 is in parallel with the inductor L2.

[0012] Further, the vertical projection of the circular hole covers the vertical projection of the circular cone cavity.

[0013] The utility model discloses the beneficial effect is:

[0014] The utility model discloses the auxiliary terminal and impedance circuit are directly integrated in the second connector, and the capacitive load on the electric component is pre-charged with small current before the first connector and the second connector butt joint, gradually reduces the pressure difference until reaching the balance, effectively prevents electric arc or spark, avoids current impact, realizes simple method, and electromechanical integration design is not needed with the help of tooling, and the main circuit is not influenced. DRAWINGS

[0015] The utility model is further illustrated below in connection with the drawings and implementation.

[0016] Figure 1 It is the schematic diagram of two port live butt joint or plug when electric power installation;

[0017] Figure 2 It is the electrical schematic diagram of two port live butt joint or plug when electric power installation;

[0018] Figure 3is the schematic diagram of embodiment 1 in the utility model;

[0019] Figure 4 is the schematic diagram of the second connecting piece in embodiment 1;

[0020] Figure 5 is the application schematic diagram of embodiment 1 in the utility model;

[0021] Figure 6 is the schematic diagram of embodiment 2 in the utility model;

[0022] Figure 7 is the combined schematic diagram of impedance circuit in the utility model;

[0023] Figure 8 is the schematic diagram of embodiment 1 of the utility model to dock or plug in;

[0024] Figure 9 is the schematic diagram of embodiment 2 of the utility model to dock or plug in;

[0025] Figure 10 is the electrical schematic diagram of the utility model to live to dock or plug in.

[0026] In the drawing: 100, first connecting piece; 200, second connecting piece; 210, installation slot; 220, through hole; 230, circular table cavity; 240, round hole; 250, recess; 300, auxiliary terminal; 310, sleeve; 320, elastic piece; 330, contact pin; 400, impedance circuit. DETAILED DESCRIPTION

[0027] The utility model will be further explained in connection with the drawings. These drawings are all simplified schematic diagrams and only illustrate the basic structure of the utility model in a schematic way, therefore, it only shows the structure related to the utility model.

[0028] As Figure 3 And Figure 6As shown in the figure, a kind of anti-arcing and current shock docking assembly, including first docking piece 100, second docking piece 200, auxiliary terminal 300 and impedance circuit 400, auxiliary terminal 300 and impedance circuit 400 are arranged in second docking piece 200, auxiliary terminal 300 includes sleeve 310, elastic element 320 and stylus 330, elastic element 320 is arranged in sleeve 310, one end of stylus 330 extends into sleeve 310, and is in contact with elastic element 320, stylus 330 is slidably connected with sleeve 310, sleeve 310 is connected with second docking piece 200 by impedance circuit 400, and the other end of stylus 330 is kept in contact with first docking piece 100 relative to second docking piece 200 during movement. By directly integrating auxiliary terminal 300 and impedance circuit 400 in second docking piece 200, the capacitive load on the electrical component is pre-charged with small current before the first docking piece 100 and the second docking piece 200 are docked, the pressure difference is gradually reduced until balance is reached, effectively preventing the generation of electric arc or spark, avoiding current shock, the method is simple, and the mechanical and electrical integration design does not need to rely on tooling and does not affect the main circuit. Specifically, the first docking piece 100 and the second docking piece 200 are the connecting terminals or sockets for the connection of the power supply component and the electrical component; the auxiliary terminal 300 is two, has conductivity, but is electrically insulated from the second docking piece 200; the elastic element 320 can be a spring or a spring piece; the impedance circuit 400 matches the capacity of the equivalent capacity C.

[0029] As shown in the figure, Figure 7 Impedance circuit 400 is composed of resistance, thermistor, inductance or capacitance, and realizes small current pre-charging of capacitive load on the electrical component. Impedance circuit 400 can be only resistance R1; can include resistance R2 and inductance L1, resistance R2 and inductance L1 are connected in series; can include resistance R3, thermistor R4 and capacitor C1, resistance R3 and thermistor R4 are connected in series, and capacitor C1 is connected in parallel with thermistor R4; can also include resistance R5, inductance L2 and capacitor C2, resistance R5 and inductance L2 are connected in series, and capacitor C2 is connected in parallel with inductance L2.

[0030] Embodiment 1

[0031] As shown in the figure, Figures 3-5 The lower part of second docking piece 200 is provided with mounting groove 210, and the top end is vertically provided with through hole 220 communicated with mounting groove 210, sleeve 310 is vertically arranged in mounting groove 210, and the end of stylus 330 away from elastic element 320 passes through through hole 220 and protrudes from the top surface of second docking piece 200, and an insulating sleeve is arranged between stylus 330 and through hole 220. Specifically, the cross section of mounting groove 210 is inverted U-shaped.

[0032] Embodiment 2

[0033] As shown in the figure, Figure 6As shown, the lower part of the second connector 200 is internally provided with a circular truncated cone cavity 230, and a circular hole 240 is formed in the top end of the circular truncated cone cavity 230, a groove 250 is transversely formed at the joint of the circular hole 240 and the circular truncated cone cavity 230, a sleeve 310 is transversely installed in the groove 250, the end of the contact pin 330 away from the elastic member 320 is located in the vertical projection of the circular truncated cone cavity 230, and the lower part of the first connector 100 is in the shape of a circular truncated cone adapted to the circular truncated cone cavity 230. Specifically, the vertical projection of the circular hole 240 covers the vertical projection of the circular truncated cone cavity 230.

[0034] As shown in the drawings, Figures 8-10 As shown, during the docking or plugging of the first connector 100 and the second connector 200, the first connector 100 moves towards the second connector 200 (K2 will be pressed), the first connector 100 first contacts and presses the elastic member 320, realizes the small-current pre-charging of the capacitive load on the power-consuming component, at this time, there will be no excessive pressure difference between the first connector 100 and the contact pin 330, avoiding the generation of electric sparks when contacting; when the movement stroke ends, that is, the docking or plugging of the first connector 100 and the second connector 200 is completed, at this time, the voltage between the first connector 100 and the second connector 200 tends to be balanced, the connection and power supply of the power supply component and the power-consuming component are completed (K1 is turned on), and the impedance circuit 400 is bypassed. When the first connector 100 and the second connector 200 are separated, the elastic member 320 pushes the contact pin 330 to reset, the first connector 100 and the second connector 200 still maintain voltage balance through the auxiliary terminal 300, prevent the electric sparks caused by the sudden interruption of current when separating, and prepare for the next docking or plugging.

[0035] The above-mentioned embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable the person skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application, any equivalent changes or modifications according to the spirit and essence of the present application should be covered in the protection scope of the present application.

Claims

1. A spark and current surge resistant docking assembly, characterized by: The application relates to a connector, which comprises a first connector (100), a second connector (200), an auxiliary terminal (300) and an impedance circuit (400), wherein the auxiliary terminal (300) and the impedance circuit (400) are arranged in the second connector (200), the auxiliary terminal (300) comprises a sleeve (310), an elastic element (320) and a contact pin (330), the elastic element (320) is arranged in the sleeve (310), one end of the contact pin (330) extends into the sleeve (310) and abuts against the elastic element (320), the contact pin (330) is in sliding fit with the sleeve (310), the sleeve (310) is connected with the second connector (200) through the impedance circuit (400), and the first connector (100) abuts against the other end of the contact pin (330) during movement relative to the second connector (200).

2. The spark and current surge resistant docking assembly of claim 1, wherein: A mounting groove (210) is formed in the lower part of the second connector (200), a through hole (220) is vertically formed in the top end of the second connector (200) and communicates with the mounting groove (210), the sleeve (310) is vertically arranged in the mounting groove (210), the end of the contact pin (330) away from the elastic element (320) penetrates through the through hole (220) and protrudes from the top surface of the second connector (200), and an insulating sleeve is arranged between the contact pin (330) and the through hole (220).

3. The spark and current surge resistant docking assembly of claim 1, wherein: A circular table cavity (230) is arranged in the lower part of the second connector (200), a circular hole (240) is formed in the top end of the second connector (200) and communicates with the circular table cavity (230), a groove (250) is transversely formed in the joint between the circular hole (240) and the circular table cavity (230), the sleeve (310) is transversely arranged in the groove (250), the end of the contact pin (330) away from the elastic element (320) is located in the vertical projection of the circular table cavity (230), and the lower part of the first connector (100) is in the shape of a circular table matched with the circular table cavity (230).

4. The spark and current surge resistant docking assembly of claim 1, wherein: The impedance circuit (400) is a resistor R1.

5. The spark and current surge resistant docking assembly of claim 1, wherein: The impedance circuit (400) comprises a resistor R2 and an inductor L1, and the resistor R2 is in series connection with the inductor L1.

6. The spark and current surge resistant docking assembly of claim 1, wherein: The impedance circuit (400) comprises a resistor R3, a thermistor R4 and a capacitor C1, the resistor R3 is in series connection with the thermistor R4, and the capacitor C1 is in parallel connection with the thermistor R4.

7. The spark and current surge resistant docking assembly of claim 1, wherein: The impedance circuit (400) comprises a resistor R5, an inductor L2 and a capacitor C2, the resistor R5 is in series connection with the inductor L2, and the capacitor C2 is in parallel connection with the inductor L2.

8. The spark and current surge resistant docking assembly of claim 3, wherein: The vertical projection of the circular hole (240) covers the vertical projection of the circular table cavity (230).

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