TW202201871A - Power supply structure of electric grinding machine tool including a power management module, a power connection line, and a battery socket - Google Patents

Abstract

A power supply structure for an electric grinding machine tool includes a power management module, a power connection line, and a battery socket. The power management module is arranged on the main body of the electric grinding machine tool. The power connection line is electrically connected to the power management module and extended to the outside of the main body of the electric grinding machine tool. The battery socket is connected to the power connection line and capable of changing its position arbitrarily based on the power connection line. The battery socket provides a replaceable battery selectively installed thereon. The battery socket has a guiding chute of a configuration formed correspondingly to a boss on the replaceable battery and at least two conductive terminals arranged in the guiding chute.

Description

Power supply structure of electric grinding tool machine

The present invention relates to a power supply structure, in particular to a power supply structure of an electric grinding tool machine.

Due to the continuous advancement of brushless motors and lithium-ion batteries, traditional plug-in hand-held tools (Corded Hand Held Tools) are gradually replaced by battery-powered tools (Battery Powered Tools). However, most battery-operated tools such as electric drills, electric screwdrivers, chainsaws, etc. are used intermittently, or the power consumption of these power tools is not large, and their batteries are sufficient to supply the power required by the power tools. However, there are some tools that consume a large amount of electricity and are mostly used continuously for a long time, such as grinding machines or waxing machines. These types of machine tools require a long time and a large amount of power supply, and the existing batteries are difficult to meet the requirements. The power requirements of these machine tools.

If a plug-in power tool such as a grinder is to be powered by a battery, it is necessary to use a larger and heavier high-capacity battery. In addition, the current hand-held power tool is mostly equipped with a battery pendant (Slot) on which the battery can be installed. In the case of a grinder, the grinder itself has a considerable weight. After the grinder is changed to battery-driven, structurally The additional installation of battery pendants and large-capacity batteries increases the weight of the grinder.

Continuing from the above, taking the drawing in FIG. 1 as an example, the drawing is a grinding tool machine 300 of the CS-1841 model of Demos company. A battery pendant 302 on the rear end, and a replaceable battery attached to the battery pendant 302 . Wherein, compared with the conventional plug-in power tool, this type of grinding tool 300 is additionally equipped with the battery pendant 302 and the replaceable battery 303 at the rear end of the main body, so that the grinding tool 300 can use the replaceable battery 303. A replaceable battery 303 is used as a power source. However, when the grinding tool 300 is in use, since the battery pendant 302 and the replaceable battery 303 have a considerable weight, the user must lift the grinding tool with greater force when operating the grinding tool 300 For the machine tool 300, however, this will make it difficult to control the grinding position, which may easily lead to unstable grinding quality. Furthermore, when the battery pendant 302 and the replaceable battery 303 are attached to the grinding tool 300, the overall weight of the grinding tool 300 is greatly increased, making it difficult for users to hold for a long time. The user is more likely to cause work injury after holding it for a long time.

In addition, for the polishing machine 400 depicted in FIG. 2 herein, the polishing machine 400 is a model T01DP202B model of ETQ company. The polishing machine 400 has a polishing pad 401 in the polishing machine 400, and is formed at the top A battery hanger 402 is provided, and a replaceable battery 403 is attached to the battery hanger 402, so that the weight of the polishing machine 400 is concentrated on the top of the polishing machine 400. When the user operates the polishing machine 400 At this time, one hand must be supported on the main body of the polishing machine 400, and the other hand must be held on a handle 404 of the polishing machine 400, so that the polishing machine 400 can be stably displaced, and it is considered that this type of machine is still inconvenient operation by the user.

Furthermore, taking drawing 3 as an example, the grinding tool 500 is a GWS 18V-100 SC model of BOSCH company. The grinding tool 500 has a grinding disc 501, a battery pendant 502 and a replaceable battery. 503, the grinding disc 501 is installed on the main body for grinding operation, the battery pendant 502 is arranged at the end of the main body of the grinding tool 500, the replaceable battery 503 is attached to the battery pendant 502, and is located in the grinding tool 500 body end. When the grinding tool 500 of this type is in use, it is easy to have the problem of unbalanced weights, which causes the user to apply more force to the head of the grinding tool 500 when operating the grinding tool 500, and at the same time balance the grinding The weights at both ends of the machine tool 500 make it difficult to control the grinding force, resulting in poor grinding quality. Furthermore, this type of machine tool is to balance the counterweight of the grinding machine tool 500, so the grinding machine tool 500 must be additionally equipped with a handle 504 located at the head of the grinding machine tool 500 in structure to assist in use The user holds the grinding tool machine 500 while increasing the grinding quality. Furthermore, the grinding tool machine 500 of this type also has the problem that the weight is too heavy, and it is difficult for the user to hold it for a long time.

The main purpose of the present invention is to solve the problem that the conventional grinding machine is difficult to operate if it is driven by a battery.

In order to achieve the above object, the present invention provides a power supply structure for an electric grinding tool, which includes a power management module, a power connection line, and a battery socket. The power management module is installed on the main body of the electric grinding tool. The power connection line is electrically connected to the power management module and extends out of the main body of the electric grinding tool. The battery socket is connected to the power connection line and can be freely changed in position based on the power connection line. Provide a replaceable battery selectively disposed on the top, the battery socket has a guide chute shaped corresponding to the boss on the replaceable battery and at least two conductive chute arranged in the guide chute terminal.

In one embodiment, the power management module includes a first connecting seat disposed on the outer surface of the main body of the electric grinding tool, and the end of the power connecting line that is not connected to the battery socket is provided with a connecting seat that can be docked with the first connecting seat the first connector.

In one embodiment, the power connection wire is provided with a second connector at one end connected to the battery socket, and the battery socket has a second connector that can be docked with the second connector.

In one embodiment, the guide chute has an entrance end and an end, the two conductive terminals are disposed near the end, and the guide chute is further provided with a cross block at the entrance end.

In one embodiment, the battery socket includes a socket for arranging the two conductive terminals, and the socket is provided with at least one electrical lead connecting the two conductive terminals.

In one embodiment, the battery socket is provided with a hanging lug on the side where the guide chute is not formed.

In one embodiment, the battery socket is provided with a buckle on the side where the guide chute is not formed.

In one embodiment, the two conductive terminals are arranged at a horizontal interval, and the two conductive terminals are respectively plate-shaped.

In one embodiment, the power supply structure selects the battery socket to be used with it based on the shape of the boss of the replaceable battery.

According to the foregoing disclosure, compared with the conventional technology, the present invention has the following features: the present invention changes the power supply structure of the electric grinding tool, so that the battery socket can be placed at any position based on the power connection line, Thereby, when the replaceable battery is attached to the battery socket, the counterweight of the electric grinding tool can be changed, so that the user can greatly reduce the burden on the hands when holding the main body of the electric grinding tool. weight, and thus easily achieve the best work quality when using grinding operations, while avoiding work injuries.

The detailed description and technical content of the present invention are described as follows in conjunction with the drawings:

Please refer to FIG. 4 to FIG. 6 , the present invention provides a power supply structure for the electric grinding tool 100 . First of all, it should be noted that the electric grinding tool 100 of the present invention can be a battery-driven power tool, and the electric grinding tool 100 is required for Machine tools that operate continuously for long periods of time. In addition, the electric abrasive tool 100 of the present invention changes the power supply structure of the electric abrasive tool 100, so that when the electric abrasive tool 100 is changed to a replaceable battery 20 as the power source, the replaceable battery 20 is no longer available. It is directly attached to the main body of the electric abrasive tool 100 , so that the counterweight of the electric abrasive tool 100 will not be generated at one end of the main body of the electric abrasive tool 100 .

Specifically, please refer to FIG. 4 to FIG. 7 , the power supply structure of the present invention includes a power management module 11 , a power connection line 12 , and a battery socket 13 . Specifically, the power management module 11 is disposed on the main body of the electric grinding machine 100 , and the power management module 11 is composed of a plurality of electronic components, and these electronic components are used to receive power and control the operation of the electric grinding machine 100 , so that the electric grinding tool machine 100 starts a grinding operation. In addition, the power connection line 12 is electrically connected to the power management module 11 , the power connection line 12 extends outside the main body of the electric grinding machine 100 , and the power connection line 12 is used to transmit power to the power management module 11 .

Further, the battery socket 13 is connected to the other end of the power connection line 12 and is not disposed on the main body of the electric grinding tool 100 . That is to say, the battery socket 13 and the electric grinding tool 100 of the present invention are designed to be separated. When the battery socket 13 is for the replaceable battery 20 to be installed on, the electric grinding tool 100 has a separate design. The counterweight is not concentrated on the main body of the electric abrasive tool 100 , so that the weight of the user when holding the electric abrasive tool 100 can be reduced. Further, the position of the battery socket 13 can be arbitrarily changed based on the power connection wire 12 , so that the replaceable battery 20 can determine its placement range based on the length of the power connection wire 12 . For example, if the length of the power connection line 12 permits, the battery socket 13 can be hung on the trousers as shown in FIG. 11 , or placed in a work bag hung on the waist of the user. In addition, the specification of the replaceable battery 20 used in the present invention is implemented in accordance with the battery of conventional battery-driven tools. The power supply mode of the replaceable battery 20 can be as disclosed in WO2019002125A, US 2014/0131059A, or US 6,840,335B, etc. . In one embodiment, the power supplied by the replaceable battery 20 of the present invention may be between 18 volts and 24 volts, such as 18 volts, 19.2 volts, 20 volts, 21.6 volts, or 24 volts. The power management of the present invention The module 11 is for the replaceable battery 20 corresponding to different voltages, so the power provided by the replaceable battery 20 is managed to maintain the stable operation of the electric grinding machine 100 . The working stability refers to the electric grinding The power tool 100 does not change the rated rotational speed of the electric abrasive power tool 100 due to the voltage supplied by the replaceable battery 20 . In one embodiment, the power management module 11 can be designed to drive a driving component (such as a brushless motor, not shown in the figure) provided in the electric abrasive tool 100 with a fixed operating voltage (such as 18 volts). ), if the voltage of the power obtained by the power management module 11 from the replaceable battery 20 is greater than the working voltage, the driving component will not be driven by the voltage of the power supplied by the replaceable battery 20, but still maintain the The operating voltage drives the drive assembly.

Please refer to FIG. 6 to FIG. 10 . On the other hand, the replaceable battery 20 has a boss 21 protruding from the battery socket 13 , and a plurality of conductive holes 22 formed on the boss 21 . Further, in the present invention, the battery socket 13 is electrically connected with the replaceable battery 20, and at the same time, in order to stably connect the replaceable battery 20, the battery socket 13 is provided with a guide chute 131, and at least two conductive terminals 132, wherein the shape of the guide chute 131 is shaped corresponding to the boss 21, and the guide chute 131 guides the battery socket 13 and the replaceable battery 20 during assembly The battery socket 13 and the replaceable battery 20 are assembled in position accordingly. In addition, the two conductive terminals 132 are disposed in the guiding chute 131 , and the polarities of the two conductive terminals 132 are opposite. In one embodiment, and please refer to FIG. 4 , the two conductive terminals 132 are respectively plate-shaped, and the two conductive terminals 132 are arranged at a horizontal interval, so that the two conductive terminals 132 are located between the battery socket 13 and the replaceable battery After 20 assembly, the two conductive terminals 132 are respectively assembled to one of the conductive holes 22 on the replaceable battery 20, so that the battery socket 13 can receive the power of the replaceable battery 20, and then The battery socket 13 is made to transmit the power of the replaceable battery 20 to the power connection line 12 .

In the present invention, by changing the power supply structure of the electric abrasive tool 100, the battery socket 13 can be placed at any position based on the power connection line 12, thereby allowing the replaceable battery 20 to be attached to the battery socket When the seat 13 is placed, the counterweight of the electric grinding machine 100 can be changed, so that the user can greatly reduce the weight on the hand when holding the main body of the electric grinding machine 100, thereby easily reaching the maximum when using the grinding operation. The best quality of work, while avoiding work injuries.

Referring back to FIG. 4 , in one embodiment, the present invention allows the battery socket 13 and the replaceable battery 20 to be carried by the user, and the battery socket 13 is not formed with the guide chute 131 There is a hanging lug 133 on one side of the cable, and the end of the hanging lug 133 that does not face the power connection line 12 is a free end 134 for the user to hang. In another embodiment, please refer to FIG. 12 , the battery socket 13 may also be provided with a buckle 135 , and the buckle 135 is disposed at the position of the mounting lug 133 , that is, the buckle 135 is located at the battery socket 13 . On the side where the guide chute 131 is not formed, the buckle 135 is for the user to hang the battery socket 13 and the replaceable battery 20 .

On the other hand, please refer to FIG. 5 , FIG. 10 and FIG. 13 , in one embodiment, the power connection line 12 of the present invention can be detached from the battery socket 13 relative to the power management module 11 . Specifically explained, the power management module 11 includes a first connection seat 111 , the first connection seat 111 is disposed on the outer surface of the electric grinding tool 100 , the power connection line 12 has a first connection head 121 , the first connection seat 111 is The connector 121 is located at the end of the power connection line 12 that is not connected to the battery socket 13 , and can be butted with the first connection socket 111 . In one embodiment, the first connection base 111 has at least one first pin 112 disposed inside. The first pin 112 is electrically connected to the power management module 11 and used to connect to the power connection line 12 . Further, the power connection wire 12 further has a second connection head 122, the second connection head 122 is located at the end of the power connection wire 12 without the first connection head 121, and the second connection head 122 is used for connecting with The battery socket 13 is docked, the battery socket 13 is docked with the second connector 122 , the battery socket 13 is formed with a set of interfaces 136 , and a second connector 137 disposed on the set of interfaces 136 , the second connecting seat 137 is used for assembling with the second connecting head 122 . In one embodiment, the second connection base 137 has at least one second pin 138 disposed inside, the second pin 138 is electrically connected to the two conductive terminals 132 , and the second pin 138 is connected to the second pin 138 The connector 122 transmits the power from the two conductive terminals 132 to the second connector 122 .

Above, in one embodiment, the battery socket 13 has a socket 139 disposed in the guide chute 131 , the socket 139 is for the two conductive terminals 132 to be installed thereon, the socket 139 There is at least one electrical lead 140 inside, the electrical lead 140 is connected to the two conductive terminals 132, and the electrical lead 140 is electrically connected to the second pin 138, whereby the electrical lead 140 transmits the two conductive terminals 132 to the power Connection line 12.

On the other hand, referring to FIGS. 6 to 10, in one embodiment, the guide chute 131 of the present invention has an inlet end 141 and an end 142, the inlet end 141 is an open end for the The replaceable battery 20 thus enters into the guide chute 131 , the end 142 is a closed end, and the two conductive terminals 132 are disposed in the guide chute 131 near the end 142 . Further, it can be found from the presently disclosed replaceable battery 20 that the replaceable battery 20 includes a casing 23 , a battery cell 24 disposed in the casing 23 , and a circuit board disposed in the casing 23 25. Specifically, the casing 23 is composed of at least an upper cover 231 and a bottom casing 232 , and the electronic components of the replaceable battery 20 are arranged on the inside of the casing 23 . The casing 23 is formed with a stop surface 233 facing the inlet end 141 , and the stop surface 233 is used to stop the replaceable battery 20 , thereby positioning the guide chute 131 . In addition, after the replaceable battery 20 and the battery socket 13 are assembled, the outer surface of the replaceable battery 20 and the battery socket 13 will form a continuous plane 26 (as shown in FIG. 4 ). In addition, the battery cell 24 is covered by the casing 23 , and the battery cell 24 is used to provide the power required by the replaceable battery 20 . In one embodiment, the model of the battery cell 24 used in the present invention may be a rechargeable battery such as 18650, 26650, or 14500. Furthermore, the circuit board 25 is also disposed in the casing 23 , and the circuit board 25 is electrically connected to the battery cell 24 , and the circuit board 25 is used to control the battery cell 24 . In one embodiment, the circuit board 25 is provided with at least one connection terminal 251 electrically connected to the battery cell 24 , and the connection terminal 251 provides power to the battery cell 24 and the two conductive terminals 132 .

8 to 10, in one embodiment, the replaceable battery 20 has a limiting structure 27 disposed on the housing 23, and an operating member 28 connected to the limiting structure 27, and The guide chute 131 has a transverse block 143 that cooperates with the limiting structure 27 . Specifically, the cross block 143 is located at the entrance end 141 of the guide chute 131 , and the limiting structure 27 protrudes toward the cross block 143 . When the cross block 143 is limited by the limiting structure 27 , so that the battery socket 13 and the replaceable battery 20 cannot be relatively separated. In addition, the operating member 28 is used to control whether the limiting structure 27 releases the restriction on the battery socket 13 . When the operating member 28 is not operated, the limiting structure 27 does not release the battery socket 13 Due to the limitation, the battery socket 13 cannot be disengaged from the replaceable battery 20 . When the operating member 28 is operated, the limiting structure 27 releases the restriction on the battery socket 13 so that the battery socket 13 can be released. In one embodiment, the replaceable battery 20 further includes a spring 29 disposed on the casing 23, the spring 29 is connected to the operating member 28, and the spring 29 provides the operation after the operating member 28 is operated Piece 28 restores the force.

On the other hand, in an embodiment, please refer to FIG. 4 , FIG. 14 and FIG. 15 , the guide chute 131 on the battery socket 13 (or 14 ) can be shaped according to the structure of the boss 21 (or 31 ) . Specifically, the power supply structure of the present invention can be changed according to the different structures of the replaceable batteries of various brands. The power supply structure of the present invention may further include at least one battery socket 14 . The structure of the battery socket 14 is different from that of the battery socket 13 , and the battery socket 13 can be used for attaching the replaceable battery 20 The battery socket 14 is used for attaching another replaceable battery 30 to it. The two replaceable batteries 20 and 30 have slightly different structures due to different manufacturers. The battery sockets 13 and 14 can be designed according to the two replaceable batteries 20 and 30 respectively.

To sum up, the above is only a preferred embodiment of the present invention, and should not limit the scope of implementation of the present invention, that is, all equivalent changes and modifications made according to the scope of the patent application of the present invention should still belong to the present invention. patent coverage.

100: Electric Grinding Tool Machine 11: Power Management Module 111: The first connection seat 112: The first pin 12: Power cable 121: The first connector 122: Second connector 13, 14: Battery socket 131: Guide chute 132: Conductive terminal 133: hanging ears 134: Free End 135: Buckle 136: Group interface 137: The second connector 138: The second pin 139: Bearing 140: Electric lead 141: entry port 142: end 143: Ran 20, 30: Replaceable battery 21, 31: Boss 22: Conductive holes 23: Shell 231: upper cover 232: Bottom case 233: Stop Surface 24: battery cell 25: circuit board 251: Terminals 26: Continuous plane 27: Limit structure 28: Operating parts 29: Spring 300, 500: Grinding tool machine 301: Grinding pad 302, 402, 502: battery pendant 303, 403, 503: Replaceable batteries 400: Polishing Tool Machine 401: Polishing Pad 404: Grip 501: Grinding disc 504: Grip

FIG. 1 is a schematic diagram of a conventional battery-operated power tool. FIG. 2 is a schematic diagram of a conventional battery-driven machine tool. FIG. 3 is a schematic diagram of a conventional battery-driven power tool. FIG. 4 is a schematic diagram of a three-dimensional structure according to an embodiment of the present invention. FIG. 5 is a unit structure diagram of an embodiment of the present invention. FIG. 6 is an exploded schematic diagram of a part of the structure of an embodiment of the present invention. FIG. 7 is a schematic cross-sectional view of a part of the structure of an embodiment of the present invention. FIG. 8 is a schematic cross-sectional view of a part of the structure of an embodiment of the present invention. FIG. 9 is a schematic cross-sectional view of a part of the structure of an embodiment of the present invention. FIG. 10 is a schematic cross-sectional view of the structure of a battery socket according to an embodiment of the present invention. 11 is a schematic diagram of a battery socket and a replaceable battery for users to carry around according to an embodiment of the present invention. FIG. 12 is a schematic diagram of a power connecting wire having a connecting head according to an embodiment of the present invention. FIG. 13 is a schematic diagram of the separation of the power connection line and the connection base according to an embodiment of the present invention. FIG. 14 is a schematic diagram illustrating that the battery connection seat can be replaced according to different batteries according to an embodiment of the present invention. FIG. 15 is a schematic diagram showing that the battery connection seat can be replaced according to different batteries, and the power connection line can be separated from the electric grinder according to an embodiment of the present invention.

100: Electric Grinding Tool Machine

12: Power cable

13: Battery socket

133: hanging ears

134: Free End

20: Replaceable battery

23: Shell

231: upper cover

232: Bottom case

26: Continuous plane

28: Operating parts

Claims (14)

A power supply structure for an electric grinding tool machine, comprising: a power management module, located on the main body of the electric grinding tool; a power connection wire electrically connected to the power management module and extending outside the main body of the electric grinding tool; and A battery socket is connected to the power connection line and can be freely changed in position based on the power connection line. The battery socket is provided with a replaceable battery selectively disposed on the top of the battery socket. The battery socket has a pair of There should be a guide chute formed by a boss on the replaceable battery and at least two conductive terminals arranged in the guide chute. The power supply structure of an electric abrasive tool as claimed in claim 1, wherein the power management module comprises a first connection seat provided on the outer surface of the main body of the electric abrasive tool, and the power connection cable is not connected to the battery socket. One end is provided with a first connecting head which can be butted with the first connecting seat. The power supply structure for an electric grinding tool as claimed in claim 2, wherein a second connector is provided at one end of the power connection line connected to the battery socket, and the battery socket has a connector that can be docked with the second connector. of the second connector. The power supply structure for an electric abrasive tool according to any one of claims 1 to 3, wherein the guide chute has an inlet end and an end, the two conductive terminals are disposed near the end, and the guide chute is further than The inlet end is provided with a cross block. The power supply structure for an electric grinding tool according to any one of claims 1 to 3, wherein the battery socket includes a socket for the two conductive terminals, and at least one connection is provided in the socket for connecting the two conductive terminals. Terminal electrical leads. The power supply structure for an electric grinding tool as claimed in claim 5, wherein the battery socket is provided with a hanging lug on a side where the guide chute is not formed. The power supply structure for an electric grinding tool as claimed in claim 5, wherein the battery socket is provided with a retaining ring on the side where the guide chute is not formed. The power supply structure of the electric grinding tool machine according to claim 5, wherein the two conductive terminals are arranged at horizontal intervals, and the two conductive terminals are respectively plate-shaped. The power supply structure for an electric abrasive tool according to any one of claims 1 to 3, wherein the power supply structure selects the battery socket to be used with it based on the shape of the boss of the replaceable battery. The power supply structure for an electric grinding tool according to any one of claims 1 to 3, wherein the battery socket is provided with a hanging lug on a side of the guide chute that is not formed. The power supply structure for an electric grinding tool machine according to claim 10, wherein the two conductive terminals are arranged at intervals horizontally, and the two conductive terminals are respectively plate-shaped. The power supply structure for an electric grinding tool as claimed in any one of claims 1 to 3, wherein the battery socket is provided with a retaining ring on a side where the guide chute is not formed. The power supply structure for an electric grinding tool machine according to claim 12, wherein the two conductive terminals are arranged at intervals horizontally, and the two conductive terminals are respectively plate-shaped. The power supply structure for an electric grinding tool according to any one of claims 1 to 3, wherein the two conductive terminals are arranged at intervals horizontally, and the two conductive terminals are respectively plate-shaped.

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