JP6109626B2 - Battery pack for electric tools - Google Patents

Description

  The present invention relates to a battery pack for an electric tool configured to be detachable from a tool body of the electric tool as a power source of the electric tool.

In recent power tools, a power tool battery pack serving as a power source is mounted on the tool body and used (see, for example, Non-Patent Document 1). This battery pack for electric tools is comprised by the rechargeable battery which can be attached or detached with respect to a tool main body. That is, after the battery pack for electric tools is attached to the tool body and used, it is removed from the tool body and charged by a dedicated charger. The battery pack for the electric tool charged by the charger is attached to the tool body again. In addition, the tool main body and the dedicated charger to which the battery pack for the electric tool is mounted may be hereinafter collectively referred to as a mounted tool.
This battery pack for electric tools generally includes a housing case that also functions as an exterior and a battery body that is installed in the housing case. The battery body includes a plurality of chargeable / dischargeable battery cells and a circuit board that controls charging / discharging of the plurality of battery cells. For this reason, the circuit board is provided with positive and negative connection terminals that are connected to charge and discharge the battery cells. The circuit board is also provided with a signal terminal for transmitting and receiving signals to and from the attached tool body and attached charger.
The signal terminal is configured as a communication signal terminal that transmits and receives information on the power tool battery pack when the power tool battery pack is mounted on the mounting tool. This signal terminal is generally provided for each of a plurality of types of information. For this reason, the plurality of signal terminals are generally arranged adjacent to each other.

Published in April 2012 Makita General Catalog (BL1430 page)

On the other hand, the above-described electric tool may be used outdoors. For this reason, water such as raindrops may also be applied to such a battery pack for electric tools, and water such as raindrops may be applied to the signal terminals. If water is applied to the signal terminals, the adjacent signal terminals may be electrically connected to each other. If the signal terminals arranged adjacent to each other are electrically connected in this way, it may be identified that erroneous information transmission / reception is performed, which may cause malfunction. For this reason, in the battery pack for an electric tool attached to the electric tool described above, even if water such as raindrops may be splashed, these signals are prevented from being transmitted or received erroneously. I want to prevent electrical connections between terminals.
On the other hand, in protecting the signal terminal thus provided, for example, a coating process of the signal terminal with a low-temperature and low-pressure molding resin, which is also called hot melt molding, can be considered. However, there are voices that the signal terminal coating process with such a low-temperature and low-pressure molding resin is not sufficient, and further ingenuity is required.

  The present invention has been made in view of such circumstances, and the problem to be solved by the present invention is to provide a battery pack for an electric tool that can be mounted on a tool body of the electric tool as a power source of the electric tool. However, even if water is applied to the power tool battery pack, the electrical connection between the signal terminals provided in the power tool battery pack is suppressed.

In solving the above-described problems, the battery pack for an electric tool according to the present invention takes the following means. That is, a battery pack for an electric tool according to a first aspect of the present invention includes a lower case, an upper case fixed to the lower case, a battery cell accommodated in the lower case, A circuit board connected to the battery cell; a positive terminal and a negative terminal connected to the circuit board; and a plurality of terminals connected in parallel to the circuit board and disposed between the positive terminal and the negative terminal And a resin member that covers at least a part of the plurality of signal terminals, and the plurality of signal terminals form a connector together with the resin member.
According to the battery pack for an electric tool according to the first aspect of the present invention, even if water is applied to the plurality of signal terminals arranged between the positive electrode terminal and the negative electrode terminal, The resin member covering at least a part can isolate the water that is applied from the signal terminal. Therefore, even when water is applied to the power tool battery pack, it is possible to prevent electrical connection between the signal terminals provided in the power tool battery pack.

A battery pack for an electric tool according to a second invention is connected to a lower case, an upper case fixed to the lower case, a battery cell accommodated in the lower case, and the battery cell. A circuit board, a positive terminal and a negative terminal connected to the circuit board, a first signal terminal connected in parallel to the circuit board and disposed between the positive terminal and the negative terminal, and A second signal terminal, the first signal terminal has a first connection portion connectable to a first terminal of a charger to be charged, and the second signal terminal is A second connecting portion connectable to a second terminal of the charger to be charged, and between the first connecting portion and the second connecting portion, the first connecting portion and the second connecting portion; The resin member is disposed so as to fill at least a part between the second connection portion and the second connection portion. The features. The second signal terminal with respect to the first signal terminal means “another signal terminal” different from “one signal terminal” arranged in parallel with each other.
A battery pack for an electric tool according to a third invention is connected to a lower case, an upper case fixed to the lower case, a battery cell accommodated in the lower case, and the battery cell. A circuit board, a positive terminal and a negative terminal connected to the circuit board, a plurality of signal terminals connected in parallel to the circuit board and disposed between the positive terminal and the negative terminal, The positive terminal, the negative terminal, and the plurality of signal terminals are terminals for providing electrical contacts from both sides of the counterpart terminal so as to be sandwiched from both sides of the counterpart terminal to be connected. It is formed, It is characterized by the above-mentioned. In addition, the other party here is the to-be-mounted tool with which this battery pack for electric tools is mounted | worn. Moreover, the other party terminal is a terminal provided in the to-be-mounted tool side connected when this battery pack for electric tools is mounted to a to-be-mounted tool.
A battery pack for an electric tool according to a fourth invention is connected to a lower case, an upper case fixed to the lower case, a battery cell accommodated in the lower case, and the battery cell. A circuit board, a positive terminal and a negative terminal connected to the circuit board, and a first signal terminal and a second signal terminal connected in parallel to the circuit board, A resin member that covers at least a part of the second signal terminal and the second signal terminal, and the first signal terminal and the second signal terminal come into contact with the mating terminal to be connected from one side. It is formed as a terminal for providing an electrical contact from one side with respect to the counterpart terminal.

A battery pack for an electric tool according to a fifth aspect of the present invention is connected to the lower case, the upper case fixed to the lower case, the battery cell accommodated in the lower case, and the battery cell. A circuit board, a positive terminal and a negative terminal connected to the circuit board, and a first signal terminal and a second signal terminal connected in parallel to the circuit board, The signal terminal is formed as a one-side contact terminal for providing an electrical contact from the one side to the counterpart terminal by hitting from the one side to the counterpart terminal to be connected, the second signal terminal is The contact terminal is formed as a contact terminal on the other side that provides an electrical contact from the other side to the other terminal by contacting the other terminal on the opposite side to the one side. Features.
A battery pack for an electric tool according to a sixth invention is connected to a lower case, an upper case fixed to the lower case, a battery cell accommodated in the lower case, and the battery cell. A circuit board, a positive terminal and a negative terminal connected to the circuit board, and a mating terminal connected to and connected to the circuit board from one side, so that the other terminal can be electrically A signal terminal formed as a terminal for providing an electrical contact, and a connection part connectable to a terminal of a charger to be charged, and the connection part when the direction in which the connection part is connected is defined as the front side The left and right sides and the inside are covered with a resin member.
A battery pack for an electric tool according to a seventh invention is connected to the lower case, the upper case fixed to the lower case, the battery cell accommodated in the lower case, and the battery cell. A circuit board, a first terminal and a second terminal connected to the circuit board, and a resin member covering at least a part of the first terminal and the second terminal, The signal terminal forms a connector together with the resin member, and the connector is covered with the upper case.
A battery pack for an electric tool according to an eighth invention is connected to a lower case, an upper case fixed to the lower case, a battery cell accommodated in the lower case, and the battery cell. A circuit board, a first terminal and a second terminal connected to the circuit board, and a resin member covering at least a part of the first terminal and the second terminal, The signal terminal forms a connector together with the resin member, and outside the first terminal and the second terminal is provided with an external plate-like portion formed in a plate shape by the resin member. It is characterized by that.

It is an external appearance perspective view which shows the front side external appearance of the battery pack of 1st Embodiment. It is an external appearance perspective view which shows the back side external appearance of the battery pack of FIG. It is a perspective view which shows the front side perspective view of the battery main body of the battery pack of FIG. FIG. 4 is a perspective view showing a rear perspective view of the battery body of FIG. 3. It is a perspective view which shows that the battery main body is installed in the inside of a lower case. It is a perspective view which shows the inner side of an upper case. It is a perspective view which shows the front side perspective view of a connector. It is sectional drawing which shows the (VIII)-(VIII) cross-section arrow in FIG. It is a perspective view which extracts and shows the signal terminal with which the connector of FIG. 7 is equipped. It is a perspective view which shows the other party to which the connector of FIG. 7 is connected. It is sectional drawing which shows the (XI)-(XI) cross-section arrow in FIG. It is a perspective view which shows the front side perspective view of the connector of 2nd Embodiment. FIG. 13 is a perspective view showing a rear perspective view of the connector of FIG. 12. It is a perspective view which extracts and shows the signal terminal with which the connector of FIG. 12 is equipped. It is a perspective view which shows the front side perspective view in which a top-plate part is provided in the resin support body of the connector of FIG. FIG. 16 is a perspective view showing a rear perspective view of the connector of FIG. 15. It is a perspective view which shows the upper surface side perspective view of the circuit board of 3rd Embodiment. It is sectional drawing which shows the (XVIII)-(XVIII) cross-section arrow in FIG. It is sectional drawing which shows the (XIX)-(XIX) cross-section arrow in FIG. It is a perspective view which shows the front side perspective view of the connector of 3rd Embodiment. FIG. 21 is a perspective view showing a rear perspective view of the connector of FIG. 20. It is a perspective view which extracts and shows the signal terminal with which the connector of FIG. 20 is equipped.

[First Embodiment]
Below, 1st Embodiment for implementing the battery pack for electric tools which concerns on this invention is described, referring FIGS. The code | symbol 10 shown in FIG. 1 is a battery pack equivalent to the battery pack for electric tools which concerns on this invention. The battery pack 10 is a rechargeable battery configured to be detachable by sliding on a tool main body (attachment tool) of various electric tools represented by an electric driver, for example. The battery pack 10 attached to the tool body functions as a power source for the electric tool. For this reason, the battery pack 10 is removed from the tool body when the amount of charge decreases, and is attached to and charged by a dedicated charger (attached tool). It comes to be installed.
The external perspective view of FIG. 1 shows the front external appearance of the battery pack 10 of the first embodiment. The external perspective view of FIG. 2 shows the rear external appearance of the battery pack 10 of FIG. The perspective view of FIG. 3 has shown the front side perspective view of the battery main body 30 of the battery pack 10 of FIG. The perspective view of FIG. 4 shows a rear perspective view of the battery body 30 of FIG. The perspective view of FIG. 5 shows that the battery body 30 is installed inside the lower case 21. The perspective view of FIG. 6 shows the inner side of the upper case 23. Hereinafter, the battery pack 10 will be described based on the front-rear, up-down, left-right directions as illustrated. The front side of the battery pack 10 is set on the front side based on the direction in which the battery pack 10 is slid. Further, the upper side of the battery pack 10 is set on the upper side based on the direction facing the battery pack 10 with respect to the wearing tool (not shown).

As shown in FIGS. 1 and 2, the battery pack 10 generally includes an outer case 20 and a battery main body 30 (see FIG. 3 and the like) installed inside the outer case 20. The exterior case 20 functions as a housing that houses the battery body 30 while forming the exterior of the battery pack 10. The exterior case 20 is configured to have an upper and lower split structure. The exterior case 20 is configured by combining a lower case 21 and an upper case 23 in the vertical direction. The combined lower case 21 and upper case 23 are held in a combined state by screwing (not shown). The outer case 20 combined in this way has a box-shaped space in which the battery main body 30 can be installed. The detailed configuration of the exterior case 20 will be described after the battery body 30 is described.
The battery body 30 is installed in the exterior case 20 described above. As shown in FIGS. 3 and 4, the battery main body 30 is equipped with various functions as the battery pack 10 serving as a rechargeable battery. The battery main body 30 includes a battery unit 31 and a control unit 41. The battery unit 31 includes seven battery cells 33 as illustrated. The battery cell 33 is a widely used chargeable / dischargeable battery cell. The seven battery cells 33 are arranged side by side so as to be substantially stacked in two stages. The left and right electrodes of the seven battery cells 33 are provided with lead plates 34 for electrically connecting the electrodes to each other. The lead plate 34 is divided into four parts. That is, as shown in FIGS. 3 and 4, the first and second lead plates 341, 342, 342, 434, Is attached.

The control unit 41 is disposed on the upper side of the battery unit 31. The control unit 41 includes a circuit board 42 that performs various control processes. The circuit board 42 is equipped with a microcomputer, and monitors the state of the battery cell 33 to perform control related to charging and discharging. Therefore, the circuit board 42 is electrically connected to the end portions of the lead plates 34 attached to the left and right electrodes of the seven battery cells 33. Specifically, the upper end of the lead plate 34 is set as a connection location 35 and is connected to the circuit board 42. This connection location 35 includes a first connection location 351 corresponding to the first lead plate 341, a second connection location 352 corresponding to the second lead plate 342, a third connection location 353 corresponding to the third lead plate 343, and a fourth connection location. A fourth connection portion 354 corresponding to the lead plate 344 is configured. That is, when these four lead plates 34 (341 to 344) are directly fixed to the circuit board 42 via the four connection portions 35 (351 to 354), the manufacturing work for fixing the lead plate 34 is performed. Can be simplified and the manufacturing can be facilitated.
In this way, the circuit board 42 connected to the battery cell 33 is provided with various terminals. That is, the circuit board 42 is generally provided with a charge / discharge terminal 44 and a signal terminal 51. The charge / discharge terminal 44 is a terminal that is electrically connected to a tool body (not shown) or a dedicated charger that is to be worn. That is, the charge / discharge terminal 44 functions as a discharge terminal when the battery pack 10 is used as a power source by being attached to the tool body. The charging / discharging terminal 44 also functions as a charging terminal when the battery pack 10 is charged by being attached to a dedicated charger. For this reason, the charging / discharging terminal 44 includes, for example, a plus connection terminal 441 connected to a plus terminal on the tool body side, and a minus connection terminal 442 connected to a minus terminal on the tool body side, for example. The positive connection terminal 441 corresponds to a positive electrode terminal according to the present invention. The minus connection terminal 442 corresponds to the negative electrode terminal according to the present invention. The positive connection terminal 441 and the negative connection terminal 442 are configured to have a symmetrical shape.

  That is, the charge / discharge terminal 44 is formed by disposing plate spring-shaped metal terminals so as to face each other. Specifically, these charge / discharge terminals 44 (plus connection terminal 441 and minus connection terminal 442) are configured by arranging an inner contact terminal 45 and an outer contact terminal 46 in parallel. The inner contact terminal 45 and the outer contact terminal 46 are formed to have an R shape so as to protrude in a direction facing each other. The positive connection terminal 441 and the negative connection terminal 442 are configured to be symmetrical to each other. Specifically, the inner contact terminal 45 includes a support portion 451 extending upward from the circuit board 42, and a front contact portion 453 and a rear contact portion 454 extending from the support portion 451 in the front-rear direction. The front contact portion 453 and the rear contact portion 454 are formed in two stages in the vertical direction. Similarly, the outer contact terminal 46 also has a support portion 461 extending upward from the circuit board 42, and a front contact portion 463 and a rear contact portion 464 extending from the support portion 461 in the front-rear direction. The front contact portion 463 and the rear contact portion 464 are formed in two stages in the vertical direction. In other words, these charge / discharge terminals 44 (plus connection terminal 441, minus connection terminal 442) are electrically connected by sandwiching the attached charge / discharge terminals 94 (941, 942) shown in FIG. Configured as a terminal. When the charging / discharging terminal 44 is configured in this manner, the contact point can be set at two points on both sides, so that the electrical conductivity of the contact point can be improved.

  The circuit board 42 is provided with a remaining charge display device 47 that displays the remaining charge of the battery cell 33. The remaining charge display device 47 is provided on the lower surface side of the front edge of the circuit board 42 which is the circuit board 42 itself. The remaining charge display device 47 includes a display switch 48 and an LED (light emitting diode) display unit 49. The display switch 48 is configured to be pushed toward the rear side, and is attached to the lower surface side of the front end edge of the circuit board 42 so as to be supported by the circuit board 42 itself. Four LED display portions 49 are also attached to the lower surface side of the front edge of the circuit board 42 so as to be supported by the circuit board 42 itself. When pressed, the display switch 48 causes the circuit board 42 to measure the remaining charge of the battery cell 33. In response to this measurement, the circuit board 42 controls one of the four LED display units 49 to be turned on. Specifically, when the battery cell 33 is fully charged, the circuit board 42 lights all four LEDs of the LED display unit 49. Further, when the battery cell 33 is slightly reduced from the fully charged state, the circuit board 42 turns on the three LEDs of the LED display unit 49. Further, when the battery cell 33 is reduced by about half from the fully charged state, the circuit board 42 turns on the two LEDs of the LED display unit 49. When the battery cell 33 has almost no remaining charge, the circuit board 42 turns on one LED of the LED display unit 49. The upper case 23 described later is formed corresponding to the configuration of the display switch 48 and the LED display unit 49 described above. That is, the portion (reference numeral 281) where the display switch 48 is arranged in the upper case 23 is formed of a soft material that can be pushed in from the outside. Moreover, the part (code | symbol 282 places) in which the LED display part 49 is arrange | positioned among the upper cases 23 is formed with the transparent material which can permeate | transmit LED lighting toward the exterior. As described above, the display switch 48 and the LED display unit 49 constituting the remaining charge display device 47 are provided on the same front surface.

Next, the signal terminal 51 connected in parallel with the circuit board 42 will be described. The signal terminal 51 forms a connector 50 together with the resin support 60. The resin support 60 corresponds to the resin member according to the present invention. The resin support 60 is formed by molding a resin material having electrical insulation. The resin support 60 is molded so as to cover most of the outer periphery that is at least a part of the signal terminal 51. Hereinafter, the connector 50 will be described with reference to FIGS. The perspective view of FIG. 7 shows a front perspective view of the connector 50. The cross-sectional view of FIG. 8 shows the (VIII)-(VIII) cross-sectional view in FIG. The perspective view of FIG. 9 shows the signal terminals 51 provided in the connector 50 of FIG.
That is, as shown in FIG. 3, the connector 50 including the signal terminal 51 is disposed between the plus connection terminal 441 and the minus connection terminal 442 described above. A plurality of signal terminals 51 are arranged in parallel to form a connector 50. The front and rear positions of these six signal terminals 51 are set to be near the rear ends of the positive connection terminal 441 and the negative connection terminal 442. These six signal terminals 51 are configured as terminals for transmitting and receiving signals between the battery pack 10 and the mounting tool when the battery pack 10 is mounted on the mounting tool (tool body, dedicated charger, etc.). Has been.

  Incidentally, the configuration on the other side to which the connector 50 is connected is configured as follows. That is, the perspective view of FIG. 10 shows the connecting device body 90 of the attachment device to which the connector 50 of FIG. 7 is connected. Further, the cross-sectional view of FIG. 11 shows the (XI)-(XI) cross-sectional arrow in FIG. As shown in FIGS. 10 and 11, the device to be mounted on which the battery pack 10 is slid is equipped with a connection device body 90 that can connect the charge / discharge terminal 44 and the signal terminal 51. When the battery pack 10 is attached to an attachment tool (tool body, dedicated charger, etc.), the connection device 90 is connected to the battery pack 10 side, which will be described in detail later (the charge / discharge terminal 44 and the signal terminal 51). Etc.). This wearing tool (a tool main body, a dedicated charger, etc.) corresponds to the mating side according to the present invention, and the connecting device body 90 equipped in this wearing tool corresponds to the mating terminal. Note that the front / rear, up / down, left / right directions of the connection device body 90 are set in accordance with the front / rear direction of the battery pack 10 slidably mounted on the connection device body 90.

The connection device body 90 generally includes a support pedestal 92, mounted side charge / discharge terminals 94 (941, 942), and mounted side signal terminals 96 (961 to 966). The support pedestal 92 is formed to have an outer peripheral shape that allows the battery pack 10 to be mounted. On both the left and right sides of the support pedestal 92, sandwiching recesses 921 and 922 are provided for incorporation into a wearing tool (not shown). The sandwiching recesses 921 and 922 are formed as an assembling structure for assembling the connection device body 90 into the wearing tool. In addition, the lower surface of the connection device body 90 shown in FIG. 10 is set as a surface facing the outside, and the upper surface of the connection device 90 is set as a surface facing the inside of the wearing device. For this reason, on the upper surface of the support pedestal 92, a lead wire lead-out port 923 for guiding the lead wires connected to the attached side charge / discharge terminal 94 and the attached side signal terminal 96 to the inside of the attached device. , 924 are provided. Further, a fitting recess 925 is provided at the rear end edge of the support base 92. The fitting recess 925 is provided at an edge facing the battery pack 10 to be slid. That is, the fitting recess 925 is formed as an opposing edge into which the insertion flange portion 233 provided on the battery pack 10 side is fitted when the battery pack 10 is slid and attached to the connection device body 90. The other outer peripheral shape of the support pedestal 92 is formed corresponding to an appropriate outer peripheral shape of the battery pack 10 to be slid.
The attached side charge / discharge terminals 94 (941, 942) correspond to the attached side positive terminal 941 corresponding to the plus connection terminal 441 provided in the battery pack 10 and the minus connection terminal 442 provided in the battery pack 10. A mounting-side negative electrode terminal 942. These mounted side charge / discharge terminals 94 (941, 942) are energized terminals formed in a plate shape, and are provided with a flat surface extending in a direction in which the battery pack 10 is slid. The attached signal terminals 96 (961 to 966) are provided corresponding to the signal terminals 51 (511 to 516) provided in the battery pack 10. That is, these mounted side signal terminals 96 (961 to 966) are also energized terminals formed in a plate shape, and are provided with an extending plane in the direction in which the battery pack 10 is slidably mounted. The first to sixth mounted-side signal terminals 961 to 966 are connected to the first to sixth signal terminals 511 to 516 provided in the battery pack 10 according to the slide mounting of the battery pack 10. It has become.

As shown in FIG. 11, a guide seat surface member 99 is provided below the six attached signal terminals 96 (961 to 966). The guide seat surface member 99 is provided so as to extend in the arrangement range of the six mounted side signal terminals 96 (961 to 966). The guide seat surface member 99 is formed integrally with the support base 92. The guide seat surface member 99 has a guide function when the battery pack 10 is slidably mounted.
A lower surface 991 on the lower side of the guide seat surface member 99 is set as a portion facing the seat surface 231 of the battery pack 10 so as to be slidable. Further, the upper surface 992 of the guide seat surface member 99 on the upper side in the drawing corresponds to the six mounted signal terminals 96 (961 to 966) and the six signal terminals 51 (511 to 516) according to the slide mounting of the battery pack 10. When connecting the two, they are set as the portions facing each other so as to be slidable. Note that the upper surface 992 on the upper side of the guide seating surface member 99 shown in the drawing corresponds to the six mounted signal terminals 96 (961 to 966) and the six signal terminals 51 (511 to 516) according to the slide mounting of the battery pack 10. When connecting the two, they are set as the portions facing each other so as to be slidable. As will be described later, as the electrical connection of the signal terminals 51 (511 to 516) of the battery pack 10, the signal terminals 51 are connected to the side surfaces 97 of the mounted signal terminals 96 (961 to 966). This is because the curved portion 553 of the flat contact shape portion 55 is brought into contact. In addition, as will be described later, as an electrical connection of the signal terminals 51 (511 to 516) of the battery pack 10, a signal is supplied to the upper edge 98 of the mounted signal terminals 96 (961 to 966). This is because the convex curved portion 572 of the edge contact shape portion 57 of the terminal 51 is brought into contact.

  By the way, when each of these six signal terminals 51 is attached to the wearing tool as the battery pack 10, mutual information is transmitted to and received from the wearing tool. Specifically, the first signal terminal 511 is a signal terminal that receives information related to on / off of the main switch on the mounted tool (including the tool main body and the dedicated charger) side. The second signal terminal 512 is a signal terminal that transmits and receives information related to whether or not the battery pack 10 is mounted on the mounting tool (including the tool body and the dedicated charger). The third signal terminal 513 is a signal terminal for the battery pack 10 to receive information on the side of the wearing tool (including the tool body and the dedicated charger) such as appropriate parameters. The fourth signal terminal 514 is a signal terminal that transmits information related to the battery pack such as appropriate parameters to the wearing tool (including the tool body and the dedicated charger). The 5th signal terminal 515 is a signal terminal which transmits the information regarding the stop of charging / discharging with respect to a to-be-mounted tool (a tool main body and a dedicated charger included) side. The sixth signal terminal 516 is a signal terminal that performs on / off control with respect to the circuit on the side of the wearing tool (including the tool body and the dedicated charger) from the battery pack 10. Note that the six signal terminals 51 arranged in parallel are arranged so as to be as far away as possible between the signal terminals 51 that are not to be electrically connected. In addition, the information transmitted and received by the signal terminal 51 is not limited to the above-described content, and may be any appropriate information regarding the battery pack 10 or the wearing device. For example, the information is contained in the battery pack 10. The temperature information of the battery cell 33 by a thermistor or the like may be used. In short, the above-described six signal terminals 51 are provided for the purpose of transmitting and receiving information regarding different functions, and correspond to the plurality of signal terminals according to the present invention. Further, each of the six signal terminals 51 has a different functional purpose and has a relationship corresponding to the first signal terminal and the second signal terminal according to the present invention. That is, the six signal terminals 51 arranged in parallel are in the relationship of the second (signal) terminal according to the present invention with respect to the first (signal) terminal according to the present invention, and are arranged in parallel with each other. The relationship is “other (signal) terminal” which is different from “one (signal) terminal”. Each of these six signal terminals 51 (511 to 516) is also configured as a first connection part and a second connection part that can be connected to the terminals of the dedicated charger to be charged.

The signal terminal 51 thus provided is a terminal for transmitting and receiving information related to the battery pack 10. The signal transmitted and received through the signal terminal 51 is a signal based on a control processing signal that has been subjected to control processing by the circuit board 42. This control processing signal is an information signal based on the control processing at the time of charging / discharging of the battery cell 33, and is generated by the circuit board 42.
Such six signal terminals 51 have the electrical contact structure shown in FIG. The signal terminal 51 is formed by punching a metal flat plate that can be energized and then bending it. Specifically, the signal terminal 51 has a support portion 52 extending upward in the vertical direction from the circuit board 42 extending in the horizontal direction. The support portion 52 extends in a direction orthogonal to the extending plane formed by the circuit board 42, and a contact shape that is electrically connected to the circuit board 42 is provided in the lower portion 521, and an upper portion 522 is provided in the upper portion 522. A contact shape is provided that is electrically connected to a counterpart (attachment tool) such as a tool body or a dedicated charger. Specifically, the lower part 521 of the support part 52 is provided with a contact shape extending downward in the vertical direction after being shifted to the front side. Further, a contact shape extending forward is provided on the upper portion 522 of the support portion 52. The contact shape provided in this way consists of two types of contact shapes, a planar contact shape portion 55 and an edge contact shape portion 57. Next, these two types of contact shapes will be described.

About the structure of the plane contact shape part 55, it is as the code | symbol attached | subjected to the code | symbol 512 (2nd signal terminal) in FIG. It should be noted that signal terminals 51 (511, 513, 514, 515, 516) other than the second signal terminal 512 in FIG. 8 should be attached to these signal terminals 51 for the convenience of space for reference numerals. The description of the reference numerals is omitted. That is, these signal terminals 51 (511, 513, 514, 515, 516) are configured in substantially the same manner as the second signal terminal 512 to which reference numerals are attached.
The planar contact shape portion 55 is roughly provided with an extended portion 551, a folded portion 552, and a curved portion 553. The extending portion 551 is formed so as to extend forward from the upper portion 522 of the support portion 52. In this way, a hollow portion 53 is provided at the beginning of the extension portion 551 extending from the upper portion 522 of the support portion 52 to the front side so as to be cut by connecting only the front side. The hollow portion 53 is bent so as to protrude to the opposite side to the side where the folded portion 552 is folded back with respect to the extended portion 551. The hollow portion 53 bent so as to protrude in this manner comes into contact with the internal contact portion 68 (see FIGS. 7 and 8) of the resin support body 60 arranged to face. By the contact of the hollow portion 53, the extending portion 551 of the signal terminal 51 is elastically supported in the width direction (left-right direction). That is, when the hollow portion 53 comes into contact with the internal contact portion 68, it comes into contact in the width direction (left and right direction) and also in the rear direction.

  The internal contact portion 68 is provided inside the resin support body 60 so as to penetrate the inside of the resin support body 60 in the width direction (left-right direction). That is, as can be seen from the rounded view in FIG. 8, the internal abutment portion 68 abuts the side surface 681 that can abut the hollow portion 53 in the width direction (left-right direction) and the hollow portion 53 in the rear direction. It is provided inside the resin support 60 so as to have a possible step front surface 682. In this manner, the hollow portion 53 acts to favorably support the extended portion 551 in the width direction (left-right direction) and can restrict the backward movement of the extended portion 551. That is, the hollow portion 53 can favorably elastically support the extending portion 551 when the curved portion 553 is brought into contact with the side surface 97 (side surface facing outward) of the attached signal terminal 96. In addition, the hollow portion 53 can restrict the signal terminal 51 including the extended portion 551 from coming off from the resin support body 60. That is, the hollow portion 53 can restrict the rearward displacement of the signal terminal 51 when the curved portion 553 of the signal terminal 51 is brought into contact with the side surface 97 of the attached signal terminal 96. In addition, although the internal contact part 68 of this resin support body 60 is formed by penetrating the inside of the resin support body 60 in the width direction (left-right direction), it can contact the rear end of the hollow part 53. Thus, a step front 682 is also formed.

  A folded portion 552 is provided at the front end of the extended portion 551. The folded portion 552 is formed such that the shape extending to the front side of the extending portion 551 is folded back. In addition, the return side by this return part 552 is set to the side toward the intermediate partition wall 69 of the resin support 60. Specifically, the right three that are the right half of the connector 50 are folded toward the left side with the folded portion 552 as a boundary, and the left three that are the left half of the connector 50 are the folded portions 552. It is folded toward the right side. That is, the folded side of the folded portion 552 is folded to the right side when placed on the left side with respect to the width direction center (left and right direction center) of the connector 50, and is on the right side of the width direction center (left and right direction center) of the connector 50. When it is placed on the left, it is folded to the left. Note that the folded side of the folded portion 552 is set to be opposite to the protruding side of the hollow portion 53 described above.

  Here, a portion folded from the extended portion 551 with the folded portion 552 as a boundary is formed as a curved portion 553. The curved portion 553 is formed to have an appropriate R shape so that the outer side is convex when folded from the extended portion 551 with the folded portion 552 as a boundary. That is, the curved portion 553 is supported by the extending portion 551 via the folded portion 552. For this reason, the curved portion 553 is elastically supported by the folded portion 552. Further, even in the curved portion 553 formed with an appropriate R shape, the outer surface has a rounded protrusion, so that a contact point that is electrically connected can be reliably provided. ing. That is, the curved portion 553 of the planar contact shape portion 55 is configured as a part of the female signal terminal 59. Note that the outer surface of the curved portion 553 of the signal terminal 51 faces the resin support 60, and the above-mentioned mounted-side signal terminals 96 (961 to 966) are provided between the curved portion 553 and the resin support 60. Is inserted and electrical connection becomes possible. In other words, the curved portion 553 of the planar contact-shaped portion 55 of the signal terminal 51 is brought into contact with the side surface 97 of the attached signal terminal 96 (961 to 966) from one side to be electrically connected. In other words, these six signal terminals 51 are formed as terminals that provide electrical contacts from one side with respect to the counterpart terminal by contacting the counterpart terminal to be connected from one side.

  On the other hand, the edge contact shape portion 57 is roughly provided with an extending portion 571 and a convex curved portion 572. The extending portion 571 is formed so as to extend forward from the upper portion 522 of the support portion 52. The extending portion 571 extending from the upper portion 522 of the supporting portion 52 is formed in a flat plate shape having an extending plane orthogonal to the extending plane of the supporting portion 52. That is, the extended portion 571 is formed by bending the upper side of the support portion 52. On the front side of the extended portion 571, a convex curved portion 572 extending in the extending direction of the extended portion 571 is provided. The convex curved portion 572 is formed to have a curved shape in which the lower side is smoothly convex. That is, when the above-mentioned mounted side signal terminal 96 (961 to 966) is inserted between the bending portion 553 and the resin support body 60, the convex bending portion 572 of the edge contact shape portion 57 is inserted. A contact point electrically connected to the upper end edge 98 of the mounted signal terminal 96 can be reliably provided. That is, the convex curved portion 572 of the edge contact shape portion 57 is configured as a part of the female signal terminal 59. For this reason, as an electrical connection of the signal terminals 51 (511 to 516) of the battery pack 10, the edge contact of the signal terminal 51 with respect to the upper edge 98 of the mounted signal terminal 96 (961 to 966). It also has a thing by making the convex curved part 572 of the shape part 57 contact | abut.

The signal terminals 51 formed as described above are integrated by the resin support 60 in a state where six signal terminals 51 are arranged in parallel. The resin support 60 includes a support base 61, an intermediate support 62, and a terminal support 63 in order from the bottom to the top. The support base 61 is set as a lower part of the resin support 60. The support base 61 is formed to expand in the front-rear and left-right ranges. In this way, the support base 61 formed with the expanded range can be well supported from the circuit board 42. Further, the intermediate support portion 62 disposed on the upper side of the support base portion 61 is formed corresponding to the shape of the support portion 52 of the signal terminal 51 described above. Therefore, the bulkiness in the front-rear direction is reduced as compared with the support base 61 and the terminal support 63, and the molding is performed. Further, the terminal support portion 63 disposed on the upper side of the intermediate support portion 62 is also formed corresponding to the shape of the female signal terminal 59 of the signal terminal 51 described above. For this reason, the terminal support portion 63 is shaped to have a shape protruding toward the front side as compared with the intermediate support portion 62.
By the way, the resin support body 60 molded in this way is integrally molded by arranging the six signal terminals 51 as follows. These six signal terminals 51 are arranged so as to be symmetrical as shown in FIG. An intermediate partition wall 69 is provided on the central axis of the connector 50 that is symmetrical with respect to the left and right. That is, the three signal terminals 51 arranged on the left side of the intermediate partition wall 69 are formed in parallel so as to be provided with the curved portion 553 on the right side. On the other hand, the three signal terminals 51 arranged on the right side of the intermediate partition wall 69 are formed and arranged in parallel so that the curved portion 553 is provided on the left side. In this way, the six signal terminals 51 are arranged symmetrically with the intermediate partition wall 69 as the central axis. That is, the six signal terminals 51 are formed in a symmetrical structure so that the curved portion 553 is disposed toward the intermediate partition wall 69. That is, the first to third signal terminals 511 to 513 are formed as left contact terminals that provide an electrical contact from the left side with respect to the counterpart terminal by hitting the counterpart terminal to be connected from the left side. On the other hand, the fourth to sixth signal terminals 514 to 516 are provided with an electrical contact from the right side with respect to the mating terminal by hitting from the right side opposite to the left side with respect to the mating terminal to be connected. It is formed as a right contact terminal.

The resin support 60 is configured to embed the signal terminal 51 described above when the support base 61, the intermediate support 62, and the terminal support 63 are integrally formed. That is, an opening 64 is provided on the front surface of the terminal support 63 of the resin support 60 so that the attached signal terminal 96 can be inserted into the female signal terminal 59. The opening 64 is opened so that the attached signal terminal 96 can be inserted into the female signal terminal 59. In addition, a top plate portion 65 that is molded so as to cover the six female signal terminals 59 is provided on the upper portion of the terminal support portion 63. The top plate portion 65 is provided so as to cover the upper sides of the six female signal terminals 59 arranged in parallel. When the raindrops or the like are splashed from the upper side, the signal terminals 51 are splashed with water. So that it can be avoided. An adjacent partition wall 66 is provided between each of the six female signal terminals 59 arranged in parallel. The adjacent partition wall 66 acts to separate the adjacent female signal terminals 59 from each other. In addition, outer partition walls 67 are also provided on both outer sides of the female signal terminals 59. The outer partition wall 67 acts to separate the external signal terminal 59 from the female signal terminal 59. That is, each of these six signal terminals 51 (511 to 516) is buried so as to be separated by the adjacent partition wall 66 and the intermediate partition wall 69 forming the resin support 60. In addition, the left and right sides of the six signal terminals 51 (511 to 516) that can be connected to the terminals of the charger to be charged according to the present invention are covered by the outer partition wall 67 so as to partition the outside. ing.
An internal contact portion 68 is provided on the peripheral surface forming the opening 64 of the resin support 60. The internal contact portion 68 is provided on the inner peripheral surface of the resin support 60 on the side opposite to the side where the curved portion 553 forming the female signal terminal 59 is disposed. The internal contact portion 68 is provided with the hollow portion 53 provided in the extended portion 551 described above. That is, the hollow portion 53 in the signal terminal 51 is formed on the internal contact portion 68 of the resin support 60 so as to restrict the displacement in the width direction (left-right direction) of the signal terminal 51 and the displacement in the front-rear direction of the signal terminal 51. It can be kept in contact.

The male hook mechanism 70 has a structure that, when slidably mounted on the above-described mounted device, is detachably locked to the mounted device. For this reason, the male hook mechanism 70 is configured to have a hook shape that locks against the wearing device and a finger hook shape that performs a release operation. Specifically, the male hook mechanism 70 includes a hook-shaped structure 71 having a hook shape and a finger hook shape, and a biasing spring 75 that biases the hook-shaped structure 71 in the locking direction. The hook-shaped structure 71 includes a hook part 72 and an operation part 73. The male hook mechanism 70 configured in this manner automatically engages the hook portion 72 with the female portion of the attachment tool by the urging force of the urging spring 75 by slidingly attaching to the attachment tool. Further, by pulling down the operation portion 73 against the urging force of the urging spring 75, the hook portion 72 is unlocked from the female portion of the wearing device, and the battery pack 10 is slid in this state. And can be removed from the device.
Next, the exterior case 20 in which the battery body 30 described above is installed will be described.
As shown in FIG. 5, the battery main body 30 is accommodated in the lower case 21 constituting the exterior case 20. The lower case 21 is formed in a substantially box shape with an upper surface opened. The lower case 21 having a substantially box shape is configured to accommodate the battery unit 31 in the battery body 30 described above. Specifically, the lower case 21 having a substantially box shape has a depth capable of accommodating the battery cells 33 that are arranged so as to be stacked in two layers up and down. For this reason, the lower case 21 is in a state in which the battery cells 33 that are substantially stacked in two stages are substantially accommodated. The lower case 21 is provided with a female screw hole 22 for screwing.

On the other hand, the circuit board 42 disposed on the upper side of the battery cell 33 is disposed so as to protrude upward from the upper surface of the lower case 21. The control unit 41 of the battery main body 30 arranged in this way is accommodated in an upper case 23 described below. For this reason, the control part 41 of this battery main body 30 is arrange | positioned so that it may protrude outward from the upper surface of the lower case 21 in which the battery cell 33 is substantially accommodated so that it may be exposed outside. Here, the upper case 23 is fixed by screwing the lower case 21 from the lower side so as to be integrated with the lower case 21 on the upper side of the lower case 21. As shown in FIG. 6, the upper case 23 has a box shape that can accommodate the circuit board 42 protruding upward from the lower case 21 described above. That is, the upper case 23 is formed in a substantially box shape with the lower surface opened. The upper case 21 is provided with a screw boss 232 for screwing.
As shown in FIGS. 1 and 2, the upper case 23 forms a connection-side exterior when the battery pack 10 of the exterior case 20 is slid and attached to the attachment target. For this reason, slide guide portions 241 and 242 for guiding the slide mounting on the mounting tool such as the tool body are provided in the middle portion of the upper case 23. The slide guide portions 241 and 242 are formed by a flange shape projecting toward the left and right sides so as to extend in the front-rear direction in which the slide mounting is possible. These slide guide portions 241 and 242 are configured to be slidable by making a pair on the left and right. Each of the slide guide parts 241 and 242 is provided with four recessed parts 245. The recess 245 is for buffering vibration transmitted by the power tool to the battery cell 33 when the battery pack 10 is mounted on the power tool. That is, the four recessed portions 245 provided in the slide guide portions 241 and 242 have a vibration buffering structure. Note that the upper case 23 is formed with a seating surface 231 facing the upper side when the battery pack 10 is slidably mounted on the mounting tool.

  In addition, when the battery pack 10 is slid and attached to the attachment device, the terminal on the attachment device side is electrically connected to the charge / discharge terminal 44 and the signal terminal 51 in the upper case 23. It is formed as follows. That is, although not shown in particular, the terminal on the wearing tool side is formed as a male external terminal having a plate shape. For this reason, the upper case 23 is provided with a plurality of slits 25 and 26. The plurality of slits 25 and 26 are formed so that male external terminals having a plate shape can be inserted and electrically connected to the charge / discharge terminals 44 and the signal terminals 51 provided on the circuit board 42. The Specifically, the left and right sides of the upper case 23 are provided with charge / discharge terminal slits 25 for connecting the plate-shaped male external terminals to the charge / discharge terminals 44. Specifically, the upper case 23 is provided with a positive terminal slit 251 so that a male external terminal having a plate shape can be inserted into the positive connection terminal 441. The upper case 23 is provided with a negative terminal slit 252 so that a male external terminal having a plate shape can be inserted into the negative connection terminal 442. The upper case 23 is provided with six signal terminal slits 26 corresponding to the signal terminals 51 so that, for example, a male external terminal having a plate shape on the side of the dedicated charger can be connected. ing. The signal terminal slit 26 is provided between the charge / discharge terminal slits 25 arranged in parallel on the left and right sides of the upper case 23. A slit step 261 is formed below the signal terminal slit 26. The slit step portion 261 is formed by a step wall structure formed between the seating surface 231 and the lower end of the signal terminal slit 26 when the battery pack 10 is slid. The upper case 23 has a shape that covers the connector 50 including the resin support 60 that covers the six signal terminals 51 (511 to 516), as shown in FIG.

The upper case 23 is provided with an operation visually recognizable part 28 for displaying the remaining charge amount display device 47 in an operable manner. Specifically, as shown in FIG. 1, the upper case 23 is provided with an operation visually recognizable portion 28 that forms a thin resin corresponding to a location where the display switch 48 is disposed. In addition, the upper case 23 is provided with an operation visually recognizable part 28 corresponding to a place where the LED display unit 49 is provided, and corresponding to a place where the display switch 48 is provided, which forms a thin resin. It has been. That is, as described above, the reference numeral 281 shown in FIG. 1 is formed of a soft material that can be pushed in from the outside, and the reference numeral 282 shown in FIG. 1 is a transparent material that can transmit the LED lighting outward. It is formed with. Further, as shown in FIG. 5, the upper case 23 is provided with an operation notch 283 that allows the display switch 48 to be operated from the outside.
The upper case 23 is provided with a hook opening 271 and an operation opening 272. The hook opening 271 is an opening that allows the hook portion 72 of the male hook mechanism 70 to protrude outward. The hook portion 72 protruding from the hook opening portion 271 is engaged with an external power tool (not shown) or a female portion of a dedicated charger.

  The operation opening 272 is an opening that allows the operation portion 73 of the male hook mechanism 70 described above to be exposed to the outside. The operation unit 73 that can be operated from the operation opening 272 can be operated by the user to release the engagement of the hook part 72 protruding to the outside from the hook opening 271. Further, when the battery pack 10 is attached to a dedicated charger and charged in the upper case 23, the battery cell 33 provided in the exterior case 20 is cooled when the battery pack 10 is charged. 273 is provided. The cell cooling vent 273 provided in the exterior case 20 communicates with the ventilation opening 421 provided in the circuit board 42. For this reason, the cooling air entering the exterior case 20 through the cell cooling vent 273 acts to cool the circuit board 42 in addition to the battery cell 33.

  According to the battery pack 10 described above, the following operational effects can be achieved. That is, according to the battery pack 10 described above, even if the six signal terminals 51 arranged between the positive connection terminal 441 and the negative connection terminal 442 may be splashed with water, these six signals The resin support 60 covering the terminals 51 can isolate the water that is applied from the signal terminals 51. Therefore, even if the battery pack 10 may be splashed with water, it is possible to prevent electrical connection between the signal terminals 51 provided in the battery pack 10.

[Second Embodiment]
Next, a second embodiment, which is a modification of the connector 50 of the battery pack 10 of the first embodiment described above, will be described with reference to FIGS. In the second embodiment, only the configuration of the connector 50 in the battery pack 10 of the first embodiment is changed. For this reason, below, the structure of this changed connector 50A is demonstrated, and the description about another structure shall be abbreviate | omitted. That is, the perspective view of FIG. 12 shows a front perspective view of the connector 50A of the second embodiment. The perspective view of FIG. 13 shows a rear perspective view of the connector 50A of FIG. The perspective view of FIG. 14 shows the signal terminal 51A extracted from the connector 50A of FIG.
The connector 50A of the second embodiment is different from the connector 50 of the first embodiment described above in the following two points. First, as a first point, the connector 50A according to the second embodiment is configured as a resin support 60A in which the top plate portion 65 provided on the resin support 60 is deleted. This is different from the connector 50 of the first embodiment. Further, as a second point, in the connector 50A of the second embodiment, the edge contact shape portion 57 provided in the signal terminal 51 is deleted, so that the first embodiment is omitted. This is different from the connector 50 of FIG. The configuration other than these two points is the same as that of the first embodiment described above. For this reason, the same reference numerals as those used in describing the connector 50 according to the first embodiment are attached to the drawings for the same parts as those of the connector 50 according to the first embodiment described above. The description is omitted.

That is, in the resin support 60A of the connector 50A of the second embodiment, as shown in FIGS. 12 and 13, the top plate portion 65 provided on the terminal support portion 63 is deleted. . For this reason, the signal terminal 51A is exposed from the upper part of the resin support 60A. The adjacent partition wall 66, the outer partition wall 67, and the intermediate partition wall 69 provided between each of these six signal terminals 51 (511 to 516) and on both sides thereof are formed in a plate shape by a resin member. It is provided as a part.
Further, as shown in FIG. 14, the signal terminal 51 </ b> A has an edge contact shape portion 57 formed so as to extend forward from the upper portion 522 of the support portion 52 as it is. Therefore, the female signal terminal 59A constituted by the signal terminal 51A is only the above-described planar contact shape portion 55.
The connector 50A according to the second embodiment configured as described above has a simplified configuration as compared with the connector 50 according to the first embodiment described above. There is an advantage that the manufacturing cost can be reduced. Even if the battery pack is configured by replacing the connector 50A of the second embodiment with the connector 50 of the first embodiment, the battery pack of the first embodiment described above. The effect similar to that of 10 is achieved.

Incidentally, the resin support 60A in the connector 50A of the second embodiment may be configured in substantially the same manner as the resin support 60 in the connector 50 of the first embodiment described above. Good. That is, the perspective view of FIG. 15 shows a front perspective view in which the top plate portion 65 is provided in the resin support 60A ′ of the connector 50A ′ of FIG. The perspective view of FIG. 16 shows a rear perspective view of the connector 50A ′ of FIG. As shown in FIGS. 15 and 16, the resin support 60A ′ is configured in substantially the same manner as the resin support 60 of the first embodiment described above. Specifically, the resin support 60 </ b> A ′ is provided with a top plate 65 with respect to the terminal support 63 described above. The signal terminal 51A ′ provided in the connector 50A ′ is formed of the same signal terminal as the signal terminal 51A provided in the connector 50A of the second embodiment described above.
In the connector 50A ′ configured as described above, the top plate portion 65 is provided as compared with the connector 50A described above, so that the upper protection of the signal terminal 51A ′ can be ensured. Furthermore, it is possible to prevent the signal terminal 51A ′ from being splashed with water.

[Third Embodiment]
Next, a third embodiment that is a modification of the connector 50 and the circuit board 42 of the battery pack 10 according to the first embodiment will be described with reference to FIGS. In the third embodiment, only the configuration of the connector 50 and the circuit board 42 in the battery pack 10 of the first embodiment is changed. Therefore, hereinafter, the configuration of the changed connector 50B and the circuit board 42 (specifically, the resin coating portion 43) will be described, and description of other configurations will be omitted. That is, the perspective view of FIG. 17 shows a top perspective view of the circuit board 42 of the third embodiment. The cross-sectional view of FIG. 18 shows the (XVIII)-(XVIII) cross-sectional arrow view in FIG. The cross-sectional view of FIG. 19 shows the (XIX)-(XIX) cross-sectional arrow in FIG. The perspective view of FIG. 20 is a perspective view showing a front perspective view of the connector 50B of the third embodiment. The perspective view of FIG. 21 shows a rear perspective view of the connector 50B of FIG. The perspective view of FIG. 22 is a perspective view showing the signal terminal 51B provided in the connector 50B of FIG.

  First, a connector 50B according to a third embodiment that is different from the connector 50 according to the first embodiment will be described. The connector 50B of the third embodiment is different from the connector 50 of the first embodiment described above in the configuration of the signal terminal 51B and the resin support 60B. That is, the connector 50B of the third embodiment has the same function as the connector 50 of the first embodiment described above. This connector 50B also includes a signal terminal 51B and a resin support 60B. The resin support 60B corresponds to the resin member according to the present invention. As shown in FIG. 17, six signal terminals 51B are arranged between the positive connection terminal 441 and the negative connection terminal 442 described above. Even with these six signal terminals 51B, the same function as the signal terminal 51 of the connector 50 of the first embodiment described above is exhibited. That is, like the connector 50 of the first embodiment described above, the front and rear positions of the six signal terminals 51B are set to be close to the rear ends of the plus connection terminal 441 and the minus connection terminal 442. These six signal terminals 51B are arranged in parallel and electrically connected to the circuit board 42.

  As shown in FIGS. 17 and 18, these six signal terminals 51 </ b> B are formed in a substantially U shape in a top view and having a contact shape sandwiched between the left and right sides. That is, the signal terminal 51 </ b> B includes a support portion 591 that extends upward from the circuit board 42 and contact portions 593 and 594 that are bent from the support portion 591. The contact portions 593 and 594 are formed by being bent in a substantially U shape in a top view from the support portion 591 toward the front side. Each of the left contact portion 593 and the right contact portion 594 has an R shape so as to protrude in a direction facing each other. Each of the left contact portion 593 and the right contact portion 594 approaches each other toward the front side. Further, the front end portions of the left contact portion 593 and the right contact portion 594 face each other and contact each other. The lower end of the signal terminal 51B is formed as a connection portion 585. In FIG. 17 and the like, the description of the reference numerals is omitted, but all the six first to sixth signal terminals 511 to 516 arranged in parallel are configured in this way. These six signal terminals 51B are configured as terminals to which the attached side signal terminals 96 of the connecting device body 90 having a plate shape are connected, similarly to the connection counterpart of the signal terminal 50 of the first embodiment described above. The At this time, the six signal terminals 51B are electrically connected by sandwiching the attached signal terminal 96 of the connection device body 90 from both the left and right sides.

As shown in FIG. 20, the resin support 60B is formed so that six signal terminals 51B arranged in parallel are integrated. The resin support 60B includes a front side wall portion 61B, a rear side wall portion 62B, and a side wall portion 63B in order from the bottom to the top. The front side wall 61B is formed to form the front side wall of the signal terminal 51B. Thus, the front side wall part 61B is formed over the entire arrangement range of the first to sixth signal terminals 511 to 516 extending to the left and right. The front side wall portion 61B formed in this way can suppress the intrusion of water and dust from the front side with respect to the signal terminal 51B. On the other hand, the rear side wall 62B is formed to form the rear side wall of the signal terminal 51B. As described above, the rear side wall 62B is formed over the entire arrangement range of the first to sixth signal terminals 511 to 516 extending to the left and right. The rear side wall 62B formed in this way can suppress intrusion of water and dust from the rear side with respect to the signal terminal 51B. Further, the side wall 63B forms a wall structure on both sides of the signal terminals 511 to 516.
Furthermore, as shown in FIG. 21, a pedestal portion 68B is provided in a portion of the resin support 60B positioned below the signal terminals 51B. The pedestal 68B is formed in close contact with the upper surface of the circuit board 42. Therefore, the signal terminal 51B is arranged one step above the pedestal portion 68B. Note that a connecting portion 585 serving as a lower end of the signal terminal 51B protrudes below the pedestal portion 68B. Further, as shown in FIG. 20, an adjacent partition wall portion 66B is provided between each of the six signal terminals 51B arranged in parallel in the resin support 60B. The adjacent partition wall 66B acts to separate the signal terminals 51B arranged adjacent to each other.

By the way, the resin coating portion 43 is provided on the upper surface of the circuit board 42 on which the signal terminal 51B is thus provided. The resin coating portion 43 is formed by applying and molding an appropriate resin material on the upper surface of the circuit board 42. That is, the resin coating portion 43 is a soft resin material that has elasticity and allows airtight contact with the other, and is formed of a resin material that is electrically insulated from the contacted member. . As this resin coating | coated part 43, the rubber resin etc. which have elasticity represented by the elastomer etc. are mentioned, for example. The resin-coated portion 43 may be made of an appropriate resin material as long as it has a sealing property that allows airtight contact with others after molding and has an electrical insulation property that electrically insulates others. You can choose. Moreover, in this resin coating | coated part 43, it may shape | mold by apply | coating the resin adhesive which has appropriate electrical insulation to the upper surface of the circuit board 42, and drying. When a resin adhesive is selected as the resin for forming the resin coating portion 43, the softness is set to such a degree that even if it is soft, it is elastically deformed only slightly when pressed.
Further, even when the battery pack is configured using the configuration of the connector 50B and the circuit board 42 (specifically, the resin coating portion 43) of the third embodiment, the battery of the first embodiment described above. The effects similar to those of the pack 10 are achieved. Further, in the signal terminal 51B as in the third embodiment, the contact point can be set at two points on the left and right sides, so that the conductivity of the contact point can be improved. That is, in the third embodiment, the plus connection terminal 441, the minus connection terminal 442, and the six signal terminals 51B are sandwiched from both sides with respect to the counterpart terminal to be connected. Thus, it is formed as a terminal for providing an electrical contact from both sides with respect to the counterpart terminal. In addition, in this signal terminal 51B, only the left and right sides may be formed as contact terminals that function like leaf springs. Further, when the resin coating portion 43 as in the third embodiment is provided on the upper surface of the circuit board 42, the insulation of the circuit board can be enhanced.

In addition, in the battery pack for electric tools which concerns on this invention, it is not limited to the above-mentioned embodiment, You may make it change and comprise suitably as follows. That is, in the above-described embodiment, the number of battery cells is set to 7. However, the number of battery cells according to the present invention is not limited to this, and is appropriately set. A number may be provided. In addition, the number of lead plates may be determined according to the number of battery cells arranged in this way.
Moreover, in the exterior case which concerns on this invention, it is comprised as a case structure divided | segmented and divided by two. In other words, the upper side and the lower side according to the present invention are examples that are divided in order to make it easy to grasp the battery pack for an electric tool according to the present invention, and are not limited thereto. In other words, the case structure that is divided into two parts according to the present invention includes an example in which the left side and the right side are divided, and includes such a relationship that is divided on one side and the other side. It has become.
In addition, the soft material according to the present invention is not limited to the example of the resin coating portion 43 described above, and an appropriate configuration is adopted as long as it has elasticity and can be in airtight contact with others. can do. Further, even in the insulating material according to the present invention, it is not limited to the example of the resin coating portion 43 described above, and an appropriate configuration can be used as long as it is formed of an insulating material that can be electrically insulated. Can be adopted.

10 Battery pack (battery pack for electric tools)
20 Outer case 21 Upper case 21 Lower case 22 Female screw hole 23 Upper case 231 Seat surface 232 Screw boss 233 Insert flange portions 241, 242 Slide guide portion 245 Recess portion 25 Charging / discharging terminal slit 251 Plus terminal slit 252 Minus Terminal slit 26 Signal terminal slit 261 Slit step 271 Hook opening 272 Operation opening 273 Cell cooling vent 28 Operation visible part 30 Battery body 31 Battery part 33 Battery cell 34 Lead plates 341 to 344 First -4th lead board 35 Connection location 351-354 1st-4th connection location 41 Control part 42 Circuit board 421 Venting opening 44 Charging / discharging terminal 441 Positive connection terminal (positive electrode terminal)
442 Negative connection terminal (negative terminal)
45 inner contact terminal 451 support portion 453 front contact portion 454 rear contact portion 46 outer contact terminal 461 support portion 463 front contact portion 464 rear contact portion 47 remaining charge display device 48 display switch 49 display portion 50 connector 51 signal terminal 52 support portion 521 Lower part 522 of support part 53 Upper part of support part 55 Flat part 55 Flat contact shape part 551 Extension part 552 Folding part 553 Curved part 57 Edge contact shape part 571 Extension part 572 Convex curve part 59 Female signal terminal 60 Resin support body 61 Support base portion 62 Intermediate support portion 63 Terminal support portion 64 Opening portion 65 Top plate portion 66 Adjacent partition wall portion 67 Outer partition wall portion 68 Internal contact portion 681 Side surface 682 Step front surface 69 Intermediate partition wall 70 Male hook mechanism 71 Hook type Structure 72 Hook part 73 Operation part 90 Connection device body 92 Support bases 921, 922 Clamping recesses 923, 924 Drain outlet 925 Fitting recess 94 Mounted side charge / discharge terminal 941 Mounted side positive terminal 942 Mounted side negative terminal 96 Mounted side signal terminals 961 to 966 Mounted side signal terminal 97 Mounted side signal terminal facing outward Side surface 98 Upper edge 99 Guide seat surface member 991 Guide seat surface member lower surface 992 Guide seat surface member upper surfaces 923, 924 Lead wire outlet

Claims (8)

A lower case,
An upper case fixed to the lower case;
A battery cell housed in the lower case;
A circuit board connected to the battery cell;
A positive terminal and a negative terminal connected to the circuit board;
A plurality of signal terminals connected in parallel to the circuit board and disposed between the positive terminal and the negative terminal;
The plurality of signal terminals form a connector together with a resin member integrally provided on the circuit board ,
A battery pack for an electric tool , wherein a top plate portion provided on the resin member covers an upper portion between the plurality of signal terminals with respect to the falling water . A lower case,
An upper case fixed to the lower case;
A battery cell housed in the lower case;
A circuit board connected to the battery cell;
A positive terminal and a negative terminal connected to the circuit board;
A first signal terminal and a second signal terminal connected in parallel to the circuit board and disposed between the positive terminal and the negative terminal,
The first signal terminal has a first connection portion connectable with a first terminal of a charger to be charged,
The second signal terminal has a second connection portion connectable with the second terminal of the charger to be charged,
Between the first connection part and the second connection part, a resin member for blocking the flow of water between the first connection part and the second connection part is arranged. And a battery pack for a power tool , wherein the resin member is integrally provided on the circuit board . The battery pack for an electric tool according to claim 1 or 2,
The positive terminal , the negative terminal , and the signal terminal are formed as terminals that provide electrical contacts from both sides of the counterpart terminal so as to be sandwiched from both sides of the counterpart terminal to be connected. A battery pack for electric tools characterized by A lower case,
An upper case fixed to the lower case;
A battery cell housed in the lower case;
A circuit board connected to the battery cell;
A positive terminal and a negative terminal connected to the circuit board;
A first signal terminal and a second signal terminal connected in parallel to the circuit board, and
A resin member having a top plate portion covering the upper portion between the first signal terminal and the second signal terminal against the falling water is integrally provided on the circuit board ,
The first signal terminal and the second signal terminal are formed as terminals for providing an electrical contact from the one side to the counterpart terminal by hitting the counterpart terminal to be connected from one side, The battery pack for electric tools characterized by the above-mentioned. The battery pack for an electric tool according to claim 4,
The first signal terminal is formed as a one-side contact terminal for providing an electrical contact from the one side to the counterpart terminal by hitting from one side to the counterpart terminal to be connected,
The second signal terminal is an other-side contact terminal that provides an electrical contact from the other side to the mating terminal by hitting from the other side opposite to the one side with respect to the mating terminal to be connected The battery pack for electric tools characterized by being formed as follows. A lower case,
An upper case fixed to the lower case;
A battery cell housed in the lower case;
A circuit board connected to the battery cell;
A positive terminal and a negative terminal connected to the circuit board;
Anda signal terminal formed as a terminal for providing an electrical contact from該片side with respect to the partner-side terminal by impinging from one side of the mating terminal connecting to and connected to the circuit board,
A battery pack for an electric tool, characterized in that the left and right sides of the signal terminal and the upper part on the inner side are covered with water falling by a top plate portion of a resin member integrally provided on the circuit board . A lower case,
An upper case fixed to the lower case;
A battery cell housed in the lower case;
A circuit board connected to the battery cell;
A first terminal and a second terminal connected to the circuit board;
The upper part between the first terminal and the second terminal is covered against water falling by a top plate part of a resin member provided integrally with the circuit board ,
The first terminal and the second terminal form a connector together with the resin member,
The battery pack for an electric tool, wherein the connector is covered by the upper case. A lower case,
An upper case fixed to the lower case;
A battery cell housed in the lower case;
A circuit board connected to the battery cell;
A first terminal and a second terminal connected to the circuit board;
The upper part between the first terminal and the second terminal is covered against water falling by a top plate part of a resin member provided integrally with the circuit board ,
The first terminal and the second terminal form a connector together with the resin member,
A battery pack for an electric tool, characterized in that an outer plate-like portion formed in a plate shape by the resin member is provided outside the first terminal and the second terminal.

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