Anti-contact sparking connecting assembly and backpack battery pack using same

Abstract

The utility model relates to an anti-contact sparking connecting assembly and a backpack type battery pack using the same, the anti-contact sparking connecting assembly comprises a fixed socket and a plug, the fixed socket is provided with a live wire slot, a first weak current slot, a second weak current slot and a null line slot, and a first weak current insertion piece and a second weak current insertion piece are inserted into the first weak current slot and the second weak current slot. The length of the first weak current insertion piece and the length of the second weak current insertion piece are smaller than the length of the live line insertion piece and the length of the zero line insertion piece, and when the first weak current insertion piece is just inserted into the first weak current insertion piece and the second weak current insertion piece is just inserted into the second weak current insertion piece, the live line insertion piece and the zero line insertion piece are inserted into the live line insertion piece and the zero line insertion piece respectively. The live wire insertion piece inserted into the live wire insertion groove and the null line insertion piece inserted into the null line insertion groove are electrically connected, and as the live wire insertion piece is located in the live wire insertion groove and the null line insertion piece is located in the null line insertion groove, the situation that electric arcs or sparks are generated just when the live wire insertion piece and the null line insertion piece make contact with the insertion grooves is avoided, and the safety of insertion work is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to power plug technology field especially, it is a kind of anti-contact spark connection assembly and application the component of knapsack battery pack of this. BACKGROUND

[0002] Socket is the tool that we usually use in daily life, socket can be pressed in different places, including wall, cabinet and table etc., in order to provide power for cordless power tool equipment, people usually carry a knapsack battery pack, a socket is installed on the traditional knapsack battery pack, it is convenient to provide power for cordless power tool equipment plug, but the socket installed on the traditional knapsack battery pack is set on the outside of knapsack battery pack installation, and when people are working, the plug of cordless power tool is inserted into socket, since plug metal sheet directly contacts with the metal connecting piece of fixed socket, this leads to the easy generation of electric arc or spark outside fixed socket when plug and fixed socket just contact, which is easy to bring danger to user. SUMMARY

[0003] Therefore, it is necessary to provide a kind of anti-contact spark connection assembly and application the component of knapsack battery pack of this for the problem that the socket installed on the traditional knapsack battery pack is set on the outside of knapsack battery pack installation, and when people are working, the plug of cordless power tool is inserted into socket, since plug metal sheet directly contacts with the metal connecting piece of fixed socket, this leads to the easy generation of electric arc or spark outside fixed socket when plug and fixed socket just contact, which is easy to bring danger to user.

[0004] An anti-contact spark connection assembly, including fixed socket and plug, the fixed socket is provided with fire line slot, first weak electric slot, second weak electric slot and zero line slot, the plug is sequentially provided with fire line insert, first weak electric insert, second weak electric insert and zero line insert, the fire line insert, the first weak electric insert, the second weak electric insert and the zero line insert are sequentially inserted into the fire line slot, the first weak electric slot, the second weak electric slot and the zero line slot, the length of the first weak electric insert and the second weak electric insert is less than the length of the fire line insert and the zero line insert, the first weak electric insert and the second weak electric insert are inserted into the first weak electric slot and the second weak electric slot, so that the fire line insert inserted into fire line slot and the zero line insert inserted into the zero line slot are electrically connected.

[0005] In one embodiment, the length of the fire line insert and the zero line insert is equal, and the length of the first weak electric insert and the second weak electric insert is half of the length of the fire line insert and the zero line insert.

[0006] In one of the embodiments, the fixed socket is provided with a control board, the firewire slot is provided with a first metal connecting piece, the first weak electric slot is provided with a second metal connecting piece, the second weak electric slot is provided with a third metal connecting piece, the zero line slot is provided with a fourth metal connecting piece, and the first metal connecting piece, the second metal connecting piece, the third metal connecting piece and the fourth metal connecting piece are electrically connected with the control board respectively.

[0007] In one of the embodiments, when the first weak electric plug abuts against the second metal connecting piece or the second weak electric plug abuts against the third metal connecting piece, the firewire plug is inserted into the bottom of the firewire slot, the zero line plug is inserted into the bottom of the zero line slot, and the firewire plug, the first metal connecting piece, the control board, the fourth metal connecting piece and the zero line plug are electrically connected.

[0008] In one of the embodiments, the control board is provided with a switch for controlling the electrical connection of the firewire plug, the first metal connecting piece, the control board, the fourth metal connecting piece and the zero line plug.

[0009] In one of the embodiments, the control board is provided with a controller for controlling the switch, and the first weak electric plug, the second metal connecting piece, the control board, the controller, the third metal connecting piece and the second weak electric plug are electrically connected.

[0010] In one of the embodiments, the fixed socket is provided with a fixing ring, and the fixed socket is fixed on the backpack battery pack through the fixing ring.

[0011] In one of the embodiments, the plug is connected with an external socket.

[0012] A backpack battery pack comprises the contact-preventing and sparking-preventing connection assembly of any one of the above, a battery pack body and a shoulder strap, the shoulder strap is arranged on the battery pack body, the fixed socket is arranged on the battery pack body, the plug is inserted into the fixed socket, and the external socket is fixed on the shoulder strap.

[0013] In one of the embodiments, the battery pack body is further provided with a fixed switch, an external switch jack and an external switch, the fixed switch and the external switch jack are arranged on the side surface of the battery pack body, the external switch is provided with a first connecting line, the external switch is installed on the shoulder strap, and the other end of the first connecting line is inserted into the external switch jack.

[0014] The contact-preventing sparking connection assembly and the backpack battery pack using the same comprise a fixed socket and a plug, the fixed socket is provided with a fire wire slot, a first weak current slot, a second weak current slot and a zero wire slot, the plug is provided with a fire wire tab, a first weak current tab, a second weak current tab and a zero wire tab in sequence, the fire wire tab, the first weak current tab, the second weak current tab and the zero wire tab are inserted into the fire wire slot, the first weak current slot, the second weak current slot and the zero wire slot in sequence, the length of the first weak current tab and the second weak current tab is less than the length of the fire wire tab and the zero wire tab, the first weak current tab and the second weak current tab are inserted into the first weak current slot and the second weak current slot, so that the fire wire tab inserted into the fire wire slot and the zero wire tab inserted into the zero wire slot are electrically connected, the length of the first weak current tab and the second weak current tab is less than the length of the fire wire tab and the zero wire tab, when the first weak current tab is just inserted into the first weak current slot and the second weak current tab is just inserted into the second weak current slot, the fire wire tab inserted into the fire wire slot and the zero wire tab inserted into the zero wire slot are electrically connected, since the fire wire tab is located in the fire wire slot and the zero wire tab is located in the zero wire slot, the zero wire tab is powered only when the fire wire tab is located in the fire wire slot, the situation that the fire wire tab and the zero wire tab just contact the slot to generate electric arc or spark is avoided, and the safety of the plug-in work is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Structure diagram of the contact-preventing sparking connection assembly of one of the embodiments;

[0016] Figure 2 Structure diagram of the backpack battery pack of one of the embodiments;

[0017] Figure 3 Another structure diagram of the backpack battery pack of one of the embodiments. DETAILED DESCRIPTION

[0018] In order to make the above objectives, characteristics and advantages of the utility model more apparent, easy to understand, the specific implementation of the utility model is explained in detail below in combination with the drawings. In the following description, a lot of specific details are set forth in order to fully understand the utility model. But the utility model can be implemented in many other ways different from the description, and the person skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the following disclosed specific embodiments.

[0019] As shown in 1, a kind of anti-contact spark connection assembly 10, including fixed socket 110 and plug 120, fixed socket 110 is provided with fire line slot 111, first weak electric slot 112, second weak electric slot 113 and zero line slot 114, plug 120 is provided with fire line insert piece 121, first weak electric insert piece 122, second weak electric insert piece 123 and zero line insert piece in turn, fire line insert piece 121, first weak electric insert piece 122, second weak electric insert piece 123 and zero line insert piece 124 are inserted into fire line slot 111, first weak electric slot 112, second weak electric slot 113 and zero line slot 114 in turn, the length of first weak electric insert piece 122 and second weak electric insert piece 123 is less than the length of fire line insert piece 121 and zero line insert piece 124, first weak electric insert piece 122 and second weak electric insert piece 123 are inserted into first weak electric slot 112 and second weak electric slot 113, so that fire line insert piece 121 inserted into fire line slot 111 and zero line insert piece 124 inserted into zero line slot 114 are electrically connected.For example, fire line insert piece 121 and zero line insert piece 124 are arranged outside fixed socket 110, first weak electric insert piece 122, second weak electric insert piece 123 are arranged in the middle of fire line insert piece 121 and zero line insert piece 124, control panel 115 is arranged in fixed socket 110, first weak electric insert piece 122 and second weak electric insert piece 123 are connected with control panel 115, fire line slot 111 is provided with first metal connecting piece, first weak electric slot 112 is provided with second metal connecting piece, second weak electric slot 113 is provided with third metal connecting piece, zero line slot 114 is provided with fourth metal connecting piece, control panel 115 is provided with switch 116 for controlling the power supply of fire line insert piece 121, first metal connecting piece, control panel 115, fourth metal connecting piece and zero line insert piece 124, and controller (not shown in the figure) for controlling the closing of the above-mentioned switch 116, fire line insert piece 121, control panel 115, switch 116 and zero line insert piece 124 form a closed circuit, first weak electric insert piece 122, control panel 115, controller and second weak electric insert piece 123 form a weak electric closed circuit, when first weak electric insert piece 122 is just inserted into first weak electric slot 112, second weak electric insert piece 123 is also just inserted into weak electric slot, first weak electric insert piece 122, control panel 115, controller and second weak electric insert piece 123 realize power supply, controller works, controller makes switch 116 close, controller can be the signal to switch 116 to make switch 116 close, in turn, make fire line insert piece 121, control panel 115, switch 116 and zero line insert piece 124 power supply, while fire line insert piece 121 has been inserted into the bottom of fire line slot 111, zero line insert piece 124 has also been inserted into the bottom of zero line slot 114, avoid the situation that electric arc or spark occurs when plug 120 is just inserted into fixed socket 110.

[0020] In one embodiment, the length of the live pin 121 and the length of the zero pin 124 are equal, and the length of the first weak current pin 122 and the length of the second weak current pin 123 are half of the length of the live pin 121 and the length of the zero pin 124. For example, by making the length of the first weak current pin 122 and the length of the second weak current pin 123 half of the length of the live pin 121 and the length of the zero pin 124, when the first weak current pin 122 and the second weak current pin 123 are just inserted into the corresponding first weak current slot 112 and the second weak current slot 113, the live pin 121 is just inserted into the bottom of the live slot 111 and the zero pin 124 is just inserted into the bottom of the zero slot 114.

[0021] In one embodiment, the fixed socket 110 is provided with a control panel 115, the live slot 111 is provided with a first metal connecting piece, the first weak current slot 112 is provided with a second metal connecting piece, the second weak current slot 113 is provided with a third metal connecting piece, and the zero slot 114 is provided with a fourth metal connecting piece. The first metal connecting piece, the second metal connecting piece, the third metal connecting piece, and the fourth metal connecting piece are respectively electrically connected with the control panel 115. For example, the first metal connecting piece, the second metal connecting piece, the third metal connecting piece, and the fourth metal connecting piece are all provided as two symmetrical pieces, and the live pin 121, the first weak current pin 122, the second weak current pin 123, and the zero pin 124 are inserted into the corresponding two metal connecting pieces in sequence, so as to realize the electrical connection between the live pin 121 and the first metal connecting piece, the electrical connection between the first weak current pin 122 and the second metal connecting piece, the electrical connection between the second weak current pin 123 and the third metal connecting piece, and the electrical connection between the zero pin and the fourth metal connecting piece.

[0022] In one embodiment, when the first weak current pin 122 abuts against the second metal connecting piece or the second weak current pin 123 abuts against the third metal connecting piece, the live pin 121 is inserted into the bottom of the live slot 111, and the zero pin 124 is inserted into the bottom of the zero slot 114, so as to realize the electrical connection between the live pin 121, the first metal connecting piece, the control panel 115, the fourth metal connecting piece, and the zero pin 124. For example, when the first weak current pin 122 abuts against the second metal connecting piece or the second weak current pin 123 abuts against the third metal connecting piece, the first weak current pin 122, the second metal connecting piece, the control panel 115, the controller, the third metal connecting piece, and the second weak current pin 123 are powered on, and the switch 116 on the live pin 121, the first metal connecting piece, the control panel 115, the fourth metal connecting piece, and the zero pin 124 is closed to realize the electrical connection.

[0023] In one embodiment, the control plate 115 is provided with a switch 116 for controlling the power supply of the live pin 121, the first metal connecting piece, the control plate 115, the fourth metal connecting piece and the neutral pin 124. For example, the live pin 121, the first metal connecting piece, the control plate 115, the fourth metal connecting piece and the neutral pin 124 form a closed circuit, and the switch 116 is arranged on the closed circuit, and the closed circuit is controlled to be closed.

[0024] In one embodiment, the control plate 115 is provided with a controller for controlling the switch 116, and the first low-voltage pin 122, the second metal connecting piece, the control plate 115, the controller, the third metal connecting piece and the second low-voltage pin 123 are electrically connected. For example, when the first low-voltage pin 122 and the second metal connecting piece abut, and the second low-voltage pin 123 and the third metal connecting piece abut, the first low-voltage pin 122, the second metal connecting piece, the control plate 115, the controller, the third metal connecting piece and the second low-voltage pin 123 form a low-voltage closed circuit, so that no spark and / or arc is generated when the first low-voltage pin 122 and the second metal connecting piece abut, and the second low-voltage pin 123 and the third metal connecting piece abut. After the power supply, the controller controls the switch 116 to be closed to realize the power supply.

[0025] In one embodiment, the fixed socket 110 is provided with a fixing ring 117, and the fixed socket 110 is fixed to the backpack battery pack through the fixing ring 117. For example, by providing the fixing ring 117, the fixed socket 110 is conveniently and stably inserted into the backpack battery pack.

[0026] In one embodiment, the plug 120 is connected with an external socket 125. For example, by connecting the external socket 125 to each end of the plug 120, it is convenient to provide power supply for the plug-in connection of the cordless power tool device. At the same time, the external fixed socket 110 can also adopt the same fixed socket 110 as in the safety plug-in system.

[0027] As shown in Figures 2-3 A backpack battery pack, including the contact-preventing and sparking-avoiding connection assembly 10 of any one of the above embodiments, the battery pack body 20 and the shoulder strap 30, the shoulder strap 30 is arranged on the battery pack body 20, the fixed socket 110 is arranged on the battery pack body 20, the plug 120 is inserted into the fixed socket 110, and the external socket 125 is fixed to the shoulder strap 30. For example, the battery pack body 20 is provided with a mounting hole 210, the fixed socket 110 of the contact-preventing and sparking-avoiding connection assembly 10 is arranged in the mounting hole 210, the plug 120 is inserted into the fixed socket 110, the plug 120 is connected with the external socket 125, and the external socket 125 is located at a position close to the user's chest, which is convenient for the user to plug in for power supply.

[0028] In one of the embodiments, the battery pack body 20 is further provided with a fixed switch 220, an external switch jack 230 and an external switch 240. The fixed switch 220 and the external switch jack 230 are arranged on the side of the battery pack body 20, and the external switch 240 is provided with a first connecting line 241. The external switch 240 is installed on the shoulder strap 30, and the other end of the first connecting line 241 is inserted into the external switch jack 230. For example, one end of the first connecting line 241 is connected to the external switch 240, and the other end of the first connecting line 241 is provided with a plug 242 which is inserted into the external switch jack 230. The external switch jack 230 is provided with a second connecting line (not shown in the figure) in the battery pack body 20, and the second connecting line is electrically connected to the control panel 115. The fixed switch 220 is also electrically connected to the control panel 115, thereby further controlling the circuit output of the fixed socket 110. When the plug 120 of the external switch 240 is inserted into the external switch jack 230, the switch controlling the electric output is the external switch 240 located on the shoulder strap 30 at the position of the user's shoulder. When the plug 120 of the external switch 240 is pulled out of the external switch jack 230, the switch controlling the electric output is the fixed switch 220 of the battery pack body 20.

[0029] The above-mentioned contact-preventing lighting connection assembly 10 and the backpack battery pack using the same include a fixed socket 110 and a plug 120. The fixed socket 110 is provided with a firewire slot 111, a first weak electric slot 112, a second weak electric slot 113 and a zero line slot 114. The plug 120 is provided with a firewire tab 121, a first weak electric tab 122, a second weak electric tab 123 and a zero line tab 124 in sequence. The firewire tab 121, the first weak electric tab 122, the second weak electric tab 123 and the zero line tab 124 are inserted into the firewire slot 111, the first weak electric slot 112, the second weak electric slot 113 and the zero line slot 114 in sequence. The lengths of the first weak electric tab 122 and the second weak electric tab 123 are less than the lengths of the firewire tab 121 and the zero line tab 124. The first weak electric tab 122 and the second weak electric tab 123 are inserted into the first weak electric slot 112 and the second weak electric slot 113, so that the firewire tab 121 inserted into the firewire slot 111 and the zero line tab 124 inserted into the zero line slot 114 are electrically connected. The lengths of the first weak electric tab 122 and the second weak electric tab 123 are less than the lengths of the firewire tab 121 and the zero line tab 124. When the first weak electric tab 122 is just inserted into the first weak electric slot 112 and the second weak electric tab 123 is just inserted into the second weak electric slot 113, the firewire tab 121 inserted into the firewire slot 111 and the zero line tab 124 inserted into the zero line slot 114 are electrically connected. Since the firewire tab 121 is located in the firewire slot 111 and the zero line tab 124 is located in the zero line slot 114, the firewire tab 121 and the zero line tab 124 are not electrified until they are just in contact with the slots, so that the generation of electric arc or spark is avoided, and the safety of the plug-in work is improved.

[0030] The technical features of the above-described embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not result in contradictions, they should be considered to be within the scope of the present disclosure.

[0031] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A contact-resistant spark-proof connection assembly, characterized in that, The device includes a fixed socket and a plug. The fixed socket is provided with a live wire slot, a first low-voltage slot, a second low-voltage slot, and a neutral wire slot. The plug is provided with a live wire prong, a first low-voltage prong, a second low-voltage prong, and a neutral wire prong in sequence. The live wire prong, the first low-voltage prong, the second low-voltage prong, and the neutral wire prong are inserted into the live wire slot, the first low-voltage slot, the second low-voltage slot, and the neutral wire slot in sequence. The lengths of the first low-voltage prong and the second low-voltage prong are shorter than the lengths of the live wire prong and the neutral wire prong. The first low-voltage prong and the second low-voltage prong are electrically connected by being inserted into the first low-voltage slot and the second low-voltage slot, respectively.

2. The anti-contact spark connection assembly according to claim 1, characterized in that, The live wire connector and the neutral wire connector are of equal length, and the lengths of the first low-voltage connector and the second low-voltage connector are half the lengths of the live wire connector and the neutral wire connector.

3. The anti-contact spark connection assembly according to claim 2, characterized in that, The fixed socket is equipped with a control board. The live wire slot is equipped with a first metal connecting piece, the first low-voltage slot is equipped with a second metal connecting piece, the second low-voltage slot is equipped with a third metal connecting piece, and the neutral wire slot is equipped with a fourth metal connecting piece. The first metal connecting piece, the second metal connecting piece, the third metal connecting piece, and the fourth metal connecting piece are electrically connected to the control board.

4. The anti-contact spark connection assembly according to claim 3, characterized in that, When the first low-voltage plug abuts against the second metal connecting piece or the second low-voltage plug abuts against the third metal connecting piece, the live wire plug is inserted into the bottom of the live wire slot and the neutral wire plug is inserted into the bottom of the neutral wire slot, so that the live wire plug, the first metal connecting piece, the control board, the fourth metal connecting piece and the neutral wire plug are electrically connected.

5. The anti-contact spark connection assembly according to claim 3, characterized in that, The control board is equipped with a switch that controls the power supply of the live wire connector, the first metal connecting piece, the control board, the fourth metal connecting piece, and the neutral wire connector.

6. The anti-contact spark connection assembly according to claim 5, characterized in that, The control board is equipped with a controller for controlling the switch, and the first low-voltage plug, the second metal connecting piece, the control board, the controller, the third metal connecting piece, and the second low-voltage plug are electrically connected.

7. The anti-contact spark connection assembly according to claim 1, characterized in that, The fixed socket is provided with a fixing ring, and the fixed socket is fixed to the backpack battery pack by the fixing ring.

8. The anti-contact spark connection assembly according to claim 1, characterized in that, The plug is connected to an external socket.

9. A backpack-style battery pack, characterized in that, The device includes the anti-sparking connection assembly, battery pack body, and shoulder strap as described in any one of claims 1-8, wherein the shoulder strap is disposed on the battery pack body, the fixed socket is disposed on the battery pack body, the plug is inserted into the fixed socket, and the external socket is fixed to the shoulder strap.

10. The backpack battery pack according to claim 9, characterized in that, The battery pack body is also provided with a fixed switch, an external switch socket and an external switch. The fixed switch and the external switch socket are located on the side of the battery pack body. The external switch is provided with a first connecting wire. The external switch is mounted on the shoulder strap and the other end of the first connecting wire is inserted into the external switch socket.

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