JP2022131975A - electrical equipment - Google Patents

Abstract

To provide electrical equipment that enables replacement of a battery pack connection portion attached to a main body.SOLUTION: A battery pack connecting portion for attaching a battery pack to an electrical equipment main body 1 having a load portion such as a motor is separately formed by a detachable adapter (100, 200, 300). Each adapter has a rail portion corresponding to the battery pack and a terminal portion (130, 230, 330), and body-side connectors (21 to 25) are connected to connectors (141, 142, etc.) of the terminal portion. The electrical equipment main body 1 is equipped with two power connectors (21, 22) and three signal connectors (23 to 25), and therefore, it is possible to communicate with any of the plurality of attached battery packs.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to an electrical device capable of selectively mounting a plurality of battery packs of different types.

2. Description of the Related Art Electrical devices powered by detachable secondary batteries (battery packs) are widely used in electrical devices such as electric tools powered by motors, and lighting, sound, and heating devices operated by electric power. 2. Description of the Related Art In an electric device using a secondary battery, a so-called cordless type electric device, a battery pack is detachably attached to a battery pack connecting portion of an electric device main body. In addition, the type of battery pack differs for each manufacturer that provides electrical equipment, and the battery pack manufactured by Company B cannot be attached to the electrical equipment main body manufactured by Company A. In addition, regardless of the manufacturer, the battery pack and the electrical device main body cannot be directly attached unless the connecting portions of the battery pack and the electrical device main body are in a compatible format. In order to attach battery packs of different specifications and types to different electrical equipment bodies, an invention has been proposed in which a separate (detachable) conversion adapter is interposed between the electrical equipment body and the battery pack. In Patent Document 1, a separate conversion adapter is interposed between the main body of the electrical equipment and the battery pack, and the conversion adapter is provided with a connecting part that can be directly connected structurally to the connecting part of the battery pack of the main body of the electrical equipment. forming. Further, since the conversion adapter is formed with a battery pack connecting portion having a shape corresponding to the battery pack, the battery pack can be attached to the conversion adapter.

JP 2008-178278 A

Cordless electrical equipment is designed so that the battery pack can be attached to and detached from the battery pack connector. The rails that connect to the battery pack and the terminals that have terminals may deteriorate, or may be deformed or worn due to friction with the battery pack or the like. In the worst case, it is conceivable that the battery pack cannot be attached. In addition, when using the conversion adapter described in Cited Document 1, since an additional device (intervening device) called the conversion adapter is attached to the electric device, the work becomes heavy and large in size. It is inevitable that the convenience of electrical equipment will be hindered. In addition, some users, who usually use a battery pack made by Company B in an electric device made by Company A and do not use a battery pack made by Company A, may find it troublesome to interpose a conversion adapter. be.

SUMMARY OF THE INVENTION The present invention has been made in view of the above background, and a first object thereof is to provide an electric device with a replaceable battery pack connector. Another object of the present invention is to provide an electrical device in which a terminal portion having terminals can be easily replaced.
A second object of the present invention is to provide an electrical device that allows selection and use of a plurality of types of battery packs having different connection portions.
A third object of the present invention is to provide an electric device in which it is possible to select and use battery packs having a common body portion and different connection portions.

The typical features of the invention disclosed in the present application are as follows.
According to one aspect of the present invention, a main body portion having a load portion, a control portion for controlling the load portion, and a main body side terminal portion connected to wiring extending from either the load portion or the control portion; a battery pack connection part having a first connection part that is mechanically and electrically connectable to the main body and a second connection part that is mechanically and electrically connectable to the battery pack; In the electric device, the battery pack connection portion includes a first terminal portion provided in the first connection portion and connected to the body side terminal portion, and a second connection portion provided in the battery side terminal portion connected to the battery side terminal portion of the battery pack. and a terminal portion having a second terminal portion. The first connecting portion is detachably connected to the body portion, and the first terminal portion is detachably connected to the body side terminal portion. In addition, the battery pack connection portion includes a first battery pack connection portion having a first battery connection portion provided with a battery side terminal portion to which the first battery pack can be connected, and a first battery connection portion provided with the battery side terminal portion and connected to the first battery connection portion. a second battery pack connecting portion to which a second battery pack having a second battery connecting portion having a structure different from that of the main body portion can be connected; One of the connection parts can be attached alternatively. Also, the first connection portion and the main body portion are configured to be directly engaged so as not to move relative to each other.

According to another feature of the present invention, the main body has a main body side terminal part, and the battery pack connection part is connected to the first terminal part connected to the main body side terminal part and the battery side terminal part of the battery pack. and a rail portion that guides the connection of the battery pack. The body side terminal portion is connected to the first terminal portion in the first connection form when the first battery pack connection portion is attached to the body portion, and is connected to the first terminal portion in the first connection form when the second battery pack connection portion is attached to the body portion. It is connected to the first terminal portion in a second connection form different from the first connection form. In addition, the terminal section on the main body side includes power terminals and signal terminals. The signal terminals are connected to the control section of the electrical device by signal wiring, and the power terminals are connected to the load section by power wiring. be done. Further, the main body is formed with mounting portions for attaching the first battery pack connection portion and the second battery pack connection portion, and the first battery pack connection portion and the second battery pack connection portion each have a split case. The first battery pack connecting part or the second battery pack connecting part is alternatively fixed to the main body part by sandwiching the mounting part between the split cases.

According to still another feature of the present invention, the electrical equipment has a pair of rails for guiding the connection of the battery pack, one of the pair of rails is formed on one side of the split type case and the other is formed on the case. formed on the other side. In addition, the battery pack connecting portion has an insulated dummy terminal capable of holding a connector that is not connected to the first terminal portion. The first terminal portion and the second terminal portion are fixed to the terminal portion sandwiched by the split case, the first terminal portion is provided above the terminal portion, and the second connection portion is provided below the terminal portion. is provided. Further, the split type case has a first clamping portion and a second clamping portion, the first clamping portion clamps the mounting portion of the main body portion, and the second clamping portion clamps the terminal portion.

According to still another feature of the present invention, an electric device includes a first battery pack connection section to which a first battery pack having a first connection section can be connected, and the first battery pack connection section is a body-side terminal section. and a second terminal portion connected to the battery side terminal portion of the battery pack, and the main body side terminal portion and the first terminal portion are fitted to each other. are mechanically and electrically connected. Also, the electrical device has a second electrical device configured with a second battery pack connection section to which a second battery pack having a second connection section having a structure different from that of the first connection section can be connected. Furthermore, the second battery pack connection portion includes a second terminal portion having a third terminal portion connected to the main body side terminal portion and a fourth terminal portion connected to the battery side terminal portion of the battery pack, The body-side terminal portion and the third terminal portion are fitted to each other to be mechanically and electrically connected.

ADVANTAGE OF THE INVENTION According to this invention, the electric equipment with which a battery pack connection part is replaceable can be provided. Also, it is possible to provide an electric device in which a terminal portion having a terminal can be easily replaced. In addition, it is possible to provide an electric device that can select and use a plurality of types of battery packs. Also, the battery pack connector (adapter) attached to the main body can be replaced according to the battery pack to be used. As a result, the user can selectively use the battery pack used by the user from among a plurality of types of battery packs having different shapes of connecting portions, such as those of the company and other companies (another company). Since the adapter is a separate part of the housing of the main body of the electrical equipment, additional equipment such as a conversion adapter is inserted between the battery pack connection part of the main body of the electrical equipment and the battery pack as in the past. Since there is no need to intervene, an easy-to-use electric device can be realized without impairing the portability of the electric device. Furthermore, since the electrical device main body has signal terminals compatible with all of the corresponding plurality of battery packs, communication signals can be transmitted to and from the electrical device main body regardless of which battery pack is connected. Furthermore, since the body-side terminal portion that is not connected to the terminal portion of the battery pack connection portion can be held at the fixing portion of the adapter, it is possible to suppress problems caused by accidental contact between the terminals.

FIG. 2 is a diagram showing the relationship between the electrical equipment main body 1 and the adapters 100, 200, and 300 according to the embodiment of the present invention, and is a diagram for explaining the connection of power terminals. FIG. 3 is a diagram showing the relationship between the electrical equipment main body 1 and adapters 100, 200, and 300 according to the embodiment of the present invention, and is a diagram for explaining connection of signal terminals. FIG. 2 is a perspective view of the adapters 100, 200, and 300 of FIG. 1 as viewed obliquely from below; FIG. 2 is a perspective view showing a state in which adapters 100, 200, and 300 and battery packs 150, 250, and 350 are attached to the electrical equipment main body 1 of FIG. 1; In FIG. 1, it is a connection circuit diagram in the case of using the original battery pack 150 for the electric equipment main body 1. FIG. (A) is a connection circuit diagram when a battery pack 250 of company A is connected to the electrical equipment body 1, and (B) is a circuit diagram of connection when a battery pack 350 of company B is connected. 4 is a flow showing an adapter determination processing procedure of the calculation unit 50 of the electrical equipment main body 1;

Embodiments of the present invention will be described below with reference to the drawings. In the drawings below, the same parts are denoted by the same reference numerals, and repeated descriptions are omitted. Further, in this specification, the front-rear and up-down directions are described as the directions shown in the drawings.

1 and 2 are diagrams showing the relationship between an electrical equipment main body 1 and adapters 100, 200 and 300 according to an embodiment of the present invention. FIG. 1 is a diagram for explaining the connection of power terminals. and FIG. 2 is a diagram for explaining connection of signal terminals. FIG. 1 and FIG. 2 are the same diagrams. In FIG. 1, the connection relationship of the power terminals is indicated by dotted auxiliary lines, and in FIG. 2, the connection relationship of the signal terminals is indicated by dotted auxiliary lines. there is

The electric device main body 1 is an example of an impact wrench here, and is a so-called “cordless device” that is driven by one of the battery packs 150, 250, and 350 described later with reference to FIG. 4 as a power source. The housing of the entire electric device consists of a main housing 2 which forms the outer shell of the electric device main body 1 and is a first housing having a load section driven by a motor 5, and a main housing 2 which is attachable to and detachable from the electric device main body 1. It is formed by an adapter (100, 200, 300), which is a second housing that can be attached to and detached from the main housing 2. As shown in FIG. In other words, the battery pack connection part to which the battery pack can be mechanically and electrically connected in the housing of the electrical equipment is formed as an adapter (100, 200, 300) separable from the main housing 2. FIG. Note that the motor 5 corresponds to a load portion, and the main housing 2 (electrical device main body 1) corresponds to a main body portion.

The main housing 2 is formed by a split housing 3 that is divided into left and right pieces 3L and 3R, and a cylindrical case 4 connected to the front side of the split housing 3. As shown in FIG. The cylindrical case 4 accommodates a power transmission mechanism (not shown) such as a reduction mechanism alone, a combination of a reduction mechanism and a clutch mechanism, a combination of a reduction mechanism and an impact mechanism, and the like. FIG. 1 shows an external view of an impact wrench having a cylindrical case 4 that covers the speed reduction mechanism and the impact mechanism. A penetrating shaft is formed at the tip of the cylindrical case 4, and an output shaft 9 protrudes forward. Here, the output shaft 9 is formed to have a rectangular cross-sectional shape perpendicular to the rotation axis A1 in order to mount the socket.

The divided housing 3 includes a substantially cylindrical body portion 3a that accommodates a power transmission mechanism such as a motor 5 (see FIG. 3, which will be described later) and a clutch mechanism. A grip portion 3b which extends downward and is gripped by an operator, and an adapter mounting portion 10 for fixing the adapter (100, 200, 300) serving as the second housing are formed. The split housing 3 is divided into two parts in the left-right direction along a vertical plane including the rotation axis A1, and each part is integrally formed of synthetic resin. A screw boss (not visible in the figure) having a plurality of through holes (screw holes) is formed on the right side piece 3R of the split housing 3, and a screw boss (not shown in the figure) having a plurality of non-through holes (female screw holes) is formed on the left side piece 3L. (not visible) are formed through the threaded holes to thread a plurality of screws into the internally threaded holes. The cylindrical case 4 is formed by a metal hammer case (not visible in the figure) and a synthetic resin cover arranged outside thereof. When joining the right side piece 3R and the left side piece 3L, the metal portion of the cylindrical case 4 is clamped and fixed, and the synthetic resin cover portion of the cylindrical case 4 is attached to the outside thereof. In addition, in the present invention, the shape of the main housing 2 including the cylindrical case 4 is arbitrary, and the shape may be matched with the shape of the main body 1 of the electrical equipment. The adapter mounting portion 10 corresponds to a mounting portion for mounting the adapters (100, 200, 300).

A trigger switch 6 (not visible in the drawing; refer to FIG. 6, which will be described later for reference numerals) is provided above the grip portion 3b and immediately below the body portion 3a. It is exposed forward from the portion 3b. The adapter attachment portion 10 defines a space for accommodating a control circuit (not visible in the drawing) for controlling the electrical equipment main body 1, and is used for connecting any one of the adapters 100, 200, and 300. A mounting portion (cylindrical portion 12) is formed. Further, an operation panel 15 is provided on the outer upper surface of the adapter mounting portion 10, and has operation buttons and a display portion for displaying the remaining battery capacity of the attached battery packs 150, 250, 350 (see FIG. 4 described later). , a lighting switch for a lighting device (not shown) is provided. The adapter attachment portion 10 is an enlarged diameter portion extending in a direction (front-rear direction, especially forward direction) substantially perpendicular to the longitudinal center line (vertical center line) of the grip portion 3b, and has a cylindrical outer peripheral side. The cylindrical portion 12 has a cylindrical portion 12 that is formed in a hollow shape, and the outer peripheral shape of the cylindrical portion 12 is formed in an uneven shape.

The adapters 100, 200, and 300 each have a battery-side connection portion (second connection portion) for attaching a corresponding battery pack, and an attachment portion 102 (body-side connection portion) to the adapter attachment portion 10 of the main housing 2. A first connection portion) and a battery pack connection portion are formed. The adapters 100, 200, and 300 constitute a "battery pack connection section" for connecting the battery packs 150, 250, and 350 (see FIG. 4) to the electrical equipment body 1, respectively. A first battery pack connection connectable to the pack 150, an adapter 200 being a second battery pack connection connectable to a second battery pack 250 having a second connection, and an adapter 300 being a second battery pack connection having a third connection. It becomes a third battery pack connecting portion that can be connected to the three battery packs 350 . The electric device main body 1 can be selectively attached to any one of the first battery pack connection portion (adapter 100), the second battery pack connection portion (adapter 200), and the third battery pack connection portion (adapter 300). .

The adapters (100, 200, 300) connect the right side pieces (101R, 201R, 301R) and the left side pieces (101L, 201L, 301L) of the left and right split second housing with screws (118 and 119, 218 and 219, 318). 319). At the time of screwing, any one of the adapters 100, 200, and 300 is fixed to the main housing 2 (adapter mounting portion 10) so as to sandwich the cylindrical portion 12 of the adapter mounting portion 10 having the uneven shape. As a result, the adapter 100 or the like is directly engaged with the adapter mounting portion 10 so as not to move relative to it. That is, the adapter 100 and the like are firmly fixed to the adapter attachment portion 10 . As will be described later, an elastic member is interposed between the adapter and the adapter mounting portion 10. This is for suppressing transmission of vibrations to the adapter during operation of the electrical equipment main body 1. , and is not configured to positively move relative to each other.

By making the adapter 100 or the like detachable from the adapter mounting portion 10, a desired adapter can be mounted when the electrical equipment body 1 is assembled at the manufacturer's factory or the like. Furthermore, since the adapter 100 and the like attached to the electrical equipment main body 1 are directly engaged so as not to move relative to each other, the configuration can be such that the adapter 100 and the like are unlikely to come off due to vibration during transportation or the like. Also, it is possible to facilitate connection of a battery pack corresponding to the adapter 100 or the like. At the same time of fixing to the main housing 2, the openings (111, 211, 311) to sandwich the terminal portions (130, 230, 330). As a result, at the same time that the adapters (100, 200, 300) are attached to the main housing 2, a group of terminals for connection to the battery packs (150, 250, 350) (see FIG. 3 described later for details) is provided on the lower surface side. will be installed so that is exposed. The openings (111, 211, 311) correspond to the second holding part.

The adapter attachment portion 10 has an upper wall portion 11 that covers the upper openings of the adapters 100, 200, and 300 after attachment. A cylindrical portion 12 is formed extending in the direction. An inwardly recessed hooking portion 13 is formed on a part of the outer surface of the cylindrical portion 12, and an inwardly recessed elastic member is formed below the hooking portion 13 so that an elastic member is interposed therebetween. A member attachment portion 14 is formed, and an opening portion 12a of the tubular portion 12 is formed on the lower side thereof. Five wires 31 to 35 are drawn out from the opening 12a, and connectors 21 to 25 for connection are provided at the ends of the wires 31 to 35. As shown in FIG. In this way, the connectors 21 to 25 are prepared so that they can be pulled out from the opening 12a of the main housing 2 to the outside. In this embodiment, a common fixing point (adapter attachment portion 10) is formed on the side of the electrical equipment main body 1 so as to accommodate all of the adapters 100, 200, and 300, and attachment and detachment of the adapters 100, 200, and 300 are performed. A wiring means is provided to facilitate installation. The connectors 21 to 25 correspond to terminal portions on the main body side.

The hooking portion 13 has a recess that has a substantially semicircular cross-sectional shape and is formed in a groove shape that is continuous in the circumferential direction. An engaging portion 103 is formed in the mounting portion 102 on the side of the adapter 100 so as to correspond to the groove shape of the hooking portion 13 . The engaging portion 103 is a portion on the side of the adapter 100 that comes into contact with or close to the hooking portion 13, and is formed in a protruding shape that extends inward along the entire circumference. The elastic member mounting portion 14 is a groove formed for mounting an elastic body bent in a U shape as viewed from above as a countermeasure against vibration. On the side of the adapter 100 that faces the elastic member mounting portion 14, a groove portion 104 having a substantially semicircular cross-sectional shape is formed in accordance with the shape of the elastic body. Between the outer surface of the elastic member mounting portion 14 and the groove portion 104, an elastic member (not shown) such as rubber having a circular cross section is interposed. By interposing the elastic member between the elastic member mounting portion 14 on the side of the electrical equipment main body 1 and the groove portion 104 on the side of the adapter 100 in this way, the vibration generated during the operation of the electrical equipment main body 1 is applied to the battery pack. To suppress transmission to the adapter 100 side, stabilize the fitted state between the battery pack 100 and a terminal portion (second terminal portion) connected to the battery side terminal portion, and improve durability. can be done. Similar to the adapter 100, the adapters 200, 300 also have mounting portions 202, 302 formed therein. The shape of the mounting portions 202 and 302 is the same as the shape of the mounting portion 102 . The mounting portion (102, 202, 302) corresponds to the first holding portion. The mounting portion is detachably connected to the electrical equipment main body 1 (adapter mounting portion 10), and the first terminal portion is detachably connected to the main body side terminal portion.

The adapter 100 is an attachment used by a company that manufactures the electric device main body 1 to attach a battery pack 150 sold by the company itself (battery pack for its own use). The electrical device is configured by attaching the adapter 100 to the electrical device main body 1 side and attaching the battery pack 150 corresponding to the adapter 100 (which can be directly attached). The adapter 100 is provided with a terminal portion 130 having a plurality of input connectors (first terminal portions) connected to the connectors 21 to 25, a rail mechanism, and a latch mechanism. Terminal portion 130 also has a connection terminal (second terminal portion) for connection with battery pack 150 . The adapter 100 connects a first terminal portion connected to the connectors 21 to 25 of the electrical equipment main body 1 and a second terminal portion connected to the battery-side terminal portion of the battery pack 150 (see FIG. 4) through the terminal portion 130. to fix (hold) it. That is, the first terminal portion and the second terminal portion are fixed (held) to the terminal portion 130 . An opening 111 for clamping the terminal portion 130 is formed in the lower portions of the right side 101R and the left side 101L of the case 101 of the adapter 100. As shown in FIG. 1 and 2, only the portion of the opening 111 formed in the right side 101R of the case 101 can be seen, but the left side 101L also has an opening symmetrical with the right side 101R. This opening 111 corresponds to the second holding portion.

The terminal part 130 of the first adapter 100 has an upper surface and a lower surface. On the upper surface, a connector 141 to which a positive connector 21 to which positive power is supplied is connected at the left end position, and A connector 142 to which the negative connector 22 to which negative power is supplied is connected is provided at the second position. That is, a first terminal portion having connectors 141 and 142 is provided on the upper surface. Here, synthetic resin partition walls are formed on both left and right sides of the connectors 141 and 142 to prevent the connectors 21 and 22 from being short-circuited with other terminals. A plurality of flat terminals 131 to 133 (132 and 133 are shown in FIG. 3 described later) are formed on the lower side (lower surface) of the terminal portion 130, respectively. That is, a second terminal portion having terminals 131 to 133 is provided on the bottom surface.

The first terminal portion (connectors 141 to 143) of the terminal portion 130 and the later-described dummy terminals 123 and 124 are configured so that the connectors 21 to 25 provided on the adapter mounting portion 10 slide in a predetermined direction and are fitted. . That is, the first terminal portion and the connector are configured to be connected without soldering. Therefore, for example, when the second terminal portion (terminals 131 to 133) is deformed due to wear or the like, the terminal portion can be easily removed simply by unfitting the first terminal portion and dummy terminals from the connectors 21 to 25. 130 can be replaced (replaced) with a new one. The connectors 21 to 25 are connected with the wires 31 to 35 bent. Therefore, even if the terminal portion 130 slightly moves together with the battery pack due to the operation of the electrical equipment, the terminal portion 130 can also move accordingly. Therefore, it is possible to prevent the connectors 21 to 25 from coming off from the first terminal portions and the dummy terminals without soldering the first terminal portions and the connectors. When the first terminal portion and the connector are soldered, not only the terminal portion 130 but also the connector connected to the terminal portion 130 by soldering, the wiring connected to the connector, and the control portion (connected to the wiring) circuit board), etc., must also be replaced. Alternatively, after removing the soldering and replacing it with a new terminal section 130, a process for re-soldering is required. Therefore, if it is soldered, replacement of the terminal section 130 becomes complicated.

Of the five connectors 21 to 25 that can be taken out downward from the opening 12a of the electrical equipment body 1, two are a positive connector 21 and a negative connector 22 for electric power, and the remaining three are first signal connectors for signal transmission. 23 , a second signal connector 24 and a third signal connector 25 . The wirings 31 to 35 are connected to the control section, the load section, etc. of the electrical equipment main body 1 . Wirings 31 and 32 for electric power are connected to the motor 5 which is a load portion, and wirings 33 to 35 for signals are connected to a computing portion 50 as a control portion (detailed circuits will be described later with reference to FIG. 5). The arithmetic section 50 is mounted on a control circuit board (not shown) and housed inside the adapter mounting section 10 . Although not visible in FIG. 1, the positive connector 21 and the negative connector 22 for electric power are provided with directionality of attachment as female terminals, changed in color, or changed in shape to prevent mis-insertion (connectors 141 and 142). connection error) should be prevented. Also, the connectors 23 to 25 for signal transmission should be formed with different shapes, colors, presence/absence of protrusions, and positions to prevent erroneous connection. The positive connector 21 and the negative connector 22 may be larger than the connectors 23 to 25 for signal transmission.

The electric device body 1 is equipped with battery packs 250 and 350 manufactured by another manufacturing company (another company) that are compatible with the electric device body sold by manufacturing companies (company A and company B) other than the battery pack 150 of the company. Therefore, the second adapter 200 for company A as a separate company or the third adapter 300 for company B as a separate company can be attached. In order to remove the first adapter 100 attached to the electrical equipment main body 1, the two screws 118 and 119 are removed to separate the right side piece 101R and the left side piece 101L of the case 101 to expose the terminal portion 130. , remove all the five connectors 21 to 25 from the terminal portion 130 . Next, prepare another adapter, for example, the adapter 200, attach the connectors 21 to 25 that were removed first to predetermined locations (connectors 241, 242, etc.) of the terminal section 230 for the adapter 200, and then attach the connector to the right side of the case 201. 201R and left side piece 201L are fixed with screws 218 and 219. FIG. At this time, the cylindrical portion 12 of the adapter mounting portion 10 is clamped by the mounting portion 202, and the terminal portion 230 is clamped at the same time. 10, and the terminal portion 230 is fixed to the case 201 (201R, 201L). Through the above procedure, the replacement from the first adapter 100 to the second adapter 200 is completed, and the battery pack 250 for company A (see FIG. 4) is attached to the electrical equipment body 1 using the second adapter 200. becomes possible. A third adapter 300 for attaching a battery pack 350 for company B (see FIG. 4) can be attached to the adapter attachment portion 10 of the electrical equipment main body 1 by a similar procedure.

The second adapter 200 is used to mount a battery pack 250 sold by a first separate company (company A) different from the company that manufactures the electrical device body 1 . The connector 21 to which positive power is supplied is connected downward from above to the connector 241 at the right end of the terminal part 230, and the connector 22 to which negative power is supplied is connected downward from above to the connector 242 at the left end. be done. For these connectors 241 and 242 (corresponding to the first terminal portion or the third terminal portion), it is preferable to use a male type connector to which the connectors 21 and 22 can be attached downward. After the connectors 21 and 22 are attached and the other connectors are attached, the terminal portion 230 is fixed to the case 201 by screwing the right side piece 201R and the left side piece 201L. Since the lower end of the shaped portion 12 is positioned above the connectors 21 and 22, it is possible to prevent the power connectors 21 and 22 from completely coming off from the connectors 241 and 242 when the electrical equipment is in use.

A latch mechanism is incorporated in the terminal portion 230, and a latch button 238 is provided on the rear side. A movable latch button 238 protrudes outside from cutout holes 202R and 202L formed on the rear side of the right side piece 201R and the left side piece 201L. Even if the latch mechanism is provided not on the battery pack side but on the main body side as described above, by providing the adapter 200 with the latch mechanism, the battery pack 250 manufactured by Company A, which is not provided with the latch mechanism, can be electrically connected. It becomes possible to attach and detach from the device main body 1 . When the movable latch button 238 is operated, the hook portion rotates via the rotating portion 215 , so that the battery pack 250 can be removed from the adapter 200 .

The first terminal portions (connectors 241 to 245) of the terminal portion 230 are configured such that the connectors 21 to 25 provided on the adapter mounting portion 10 are slid in a predetermined direction and fitted. That is, the first terminal portion and the connector are configured to be connected without soldering. Therefore, similarly to the adapter 100, the terminal portion 230 can be easily replaced with a new one simply by removing the fitting between the first terminal portion and the connectors 21-25. Further, like the adapter 100, it is possible to prevent the connectors 21 to 25 from coming off from the first terminal portions without soldering the first terminal portions and the connectors.

The third adapter 300 is used to mount a battery pack 350 sold by a second separate company (company B) different from the company that manufactures the electrical device body 1 . The connector 21 to which positive power is supplied is connected downward to the connector 341 on the left end of the terminal section 330, and the connector 22 to which negative power is supplied is connected upward to the connector 342 on the right end. connected downwards from For these connectors 341 and 342, it is preferable to use male connectors that allow the connectors 21 and 22 to be attached downward from above. The terminal portion 330 to which the connectors 21 and 22 are attached is sandwiched between the openings 311 of the right side piece 301R and the left side piece 301L of the case 301 and held. After the connectors 21 and 22 are attached and the other connectors are attached, the terminal portion 330 is fixed to the case 301 by screwing the right side piece 201R and the left side piece 201L.

FIG. 2 is the same view as FIG. 1, but the connection relationship of the signal terminals is indicated by dotted auxiliary lines. The electrical equipment main body 1 is provided with a number of signal wirings 33 to 35 (three in this case) corresponding to any of the plurality of battery packs 150, 250, 350, and independent connectors 23 to 25 are provided. The wirings 33 to 35 are connected to the computing section 50 (see FIG. 5 described later) of the electrical equipment main body 1 . The number of wires 33 to 35 used differs depending on the attached adapter (battery pack). In the proprietary battery pack 150, only the connector 23 is connected to the connector 143, but since the connectors 24 and 25 are not used, they are not electrically connected anywhere. However, contact of unused connectors 24, 25 with other connectors or conductors should be avoided. Therefore, in the first adapter 100, the right side piece 101R of the case 101 is provided with dummy terminals 123 and 124 that are not connected, and the connectors 24 and 25 are connected thereto. The dummy terminals 123 and 124 are synthetic resin plate-shaped portions integrally formed with the right side piece 101R of the case 101, and are shaped to fit well with the connectors 24 and 25. A latch mechanism may be provided. A first terminal portion (third terminal portion) includes a connector 143 .

In the battery pack 250 for company A (see FIG. 4, which will be described later), all of the wirings 33 to 35 for signals are used. Therefore, the connectors 23 to 25 are connected to the signal connectors 243 to 245 formed on the terminal portion 230 of the second adapter 200, respectively. In the battery pack 350 for company B (see FIG. 4, which will be described later), the wirings 34 and 35 for signals are used, but the wiring 33 is not used. Therefore, connectors 24 and 25 are connected to signal terminals (connectors) 343 and 344 of the terminal portion 330 of the third adapter 300, respectively. On the other hand, the connector 23 connected to the wiring 33 is connected to a dummy terminal 323 formed on the right side piece 301R of the case 301 . The dummy terminal 323 is a plate-like portion made of synthetic resin that is integrally formed with the case right side piece 301</b>R, and fits well with the connector 23 . In this way, all of the five connectors 21 to 25 are connected to the connectors (including dummy terminals) of the adapters 100, 200, and 300, and the connectors 21 to 25 may be displaced by movement of the electrical equipment or vibration during operation. It is designed not to contact connectors other than the connectors (including dummy terminals) on the side of the adapter connected to those connectors. Further, it is preferable to provide a claw or the like so that the connectors 21 to 25 do not come off from the connectors on the adapter 100, 200, 300 side.

FIGS. 3A to 3C are perspective views of the electrical equipment main body 1 shown in FIG. 1 with the adapters 100, 200, and 300 mounted thereon, as viewed obliquely from below. The first adapter 100 is an additional device (also referred to as an additional component, an intervening device, or an adapter alone, which is also referred to as an electrical device) that is interposed when a battery pack 150 manufactured by the company is attached to the electrical device main body 1 of the company. The first adapter 100 fixes (holds) the terminal portion 130 with its right side piece 101R and left side piece 101L. The terminal portion 130 is formed of a solid base portion 130a and an upper wall portion 130b extending forward in a plate-like shape from the upper portion of the base portion 130a. A positive input terminal 131 connected to the connector 141, a negative input terminal 132 connected to the connector 142, and a communication terminal (a signal terminal) connected to the connector 143 are provided on the front side from the base portion 130a as second terminal portions. LD terminal) 133 is formed. Rails 114 and 116 are formed on both left and right sides of the terminal portion 130 . The rails 114 and 116 are projections extending inwardly from the lower end of the adapter 100 and continuous in the front-rear direction. Recesses 115 and 117 are formed for this purpose. The rear sides of the rails 114 and 116 are connected to the rear wall surfaces of the cases 101R and 101L.

The second adapter 200 is an additional component that is interposed when the battery pack 250 of company A is attached to the electric device main body 1 of the company, and has a shape that corresponds to the battery pack connection part of the electric device main body of company A. It is said that The second adapter 200 fixes (holds) the terminal portion 230 with its right side piece 201R and left side piece 201L. The terminal portion 230 of the second adapter 200 is formed including a solid base portion 230a and an upper wall portion 230b in which the upper portion of the base portion 230a extends forward in a plate shape. A positive input terminal 231 connected to the connector 241, a negative input terminal 232 connected to the connector 242, and a first communication terminal (communication terminal which is a first signal terminal) connected to the connector 243 are provided on the front side from the base portion 230a. terminal) 233 , a second communication terminal (temperature terminal that is a second signal terminal) 234 connected to the connector 244 , and a third communication terminal (an overload terminal that is a third signal terminal) 235 connected to the connector 245 . two connection terminals are formed. Rails 214 and 216 are formed on both left and right sides of the terminal portion 230 . The rails 214 and 216 are projections extending inward from the lower end of the second adapter 200 and continuous in the front-rear direction. , 201L. Terminals 231 to 235 connected to battery pack 250 correspond to a second terminal portion.

The third adapter 300 is an additional component that is interposed when the battery pack 350 of Company B is attached to the electric device main body 1 of the company, and has a shape corresponding to the battery pack connection portion of the electric device main body of Company B. It is said that The third adapter 300 fixes (holds) the terminal portion 330 with its right side piece 301R and left side piece 301L. The terminal portion 330 of the third adapter 300 includes a solid base portion 330a and an upper wall portion 330b in which the upper portion of the base portion 330a extends forward in a plate shape. A positive input terminal 331 connected to the connector 341, a negative input terminal 332 connected to the connector 342, and a first communication terminal (a first signal terminal, which is a temperature terminal) connected to the connector 343 are provided on the front side of the base portion 330a. terminal) 333 and a second communication terminal (overload terminal which is a second signal terminal) 334 connected to the connector 344 are formed.

Rails 314 and 316 are formed on both left and right sides of the terminal portion 330 . The rails 314 and 316 are projections that extend inward from the lower end of the third adapter 300 and are continuous in the front-rear direction. , 301L. A concave portion 309 for engaging a latch claw of the battery pack 350 is formed on the front lower surface of the left side piece 301L and the right side piece 301R of the case 301 . Also, two erroneous mounting prevention claws 313 are formed near the front end of the upper wall portion 330b. The reason why the claw portion 313 is provided is to prevent the third adapter 300 from being fitted with a battery pack (for example, 14.4 V) for company B with a different voltage. The connectors 341 to 344 correspond to the first terminal portion (third terminal portion), and the terminals 331 to 333 correspond to the second terminal portion (fourth terminal portion). Further, like the adapters 100 and 200, the first terminal portion of the terminal portion 330 of the adapter 300 is configured such that the connectors 21 to 25 provided on the adapter mounting portion 10 are slid in a predetermined direction and fitted. That is, the first terminal portion and the connector are configured to be connected without soldering. Therefore, similarly to the adapters 100 and 200, the terminal portion 330 can be easily replaced with a new one simply by removing the fitting between the first terminal portion and the connectors 21-25. Further, like the adapters 100 and 200, it is possible to prevent the connectors 21 to 25 from coming off the first terminal portions without soldering the first terminal portions and the connectors.

4A to 4C are perspective views showing states in which the adapters 100, 200 and 300 and the battery packs 150, 250 and 350 are attached to the electrical equipment main body 1 of FIG. Each of the battery packs 150, 250, and 350 is provided with two sets of cells in which five lithium-ion battery cells are connected in series, and the positive electrodes and the negative electrodes of these two sets are connected in parallel, respectively, so that a rated output of 18 V can be obtained. is obtained. The lithium-ion battery cells used in the battery packs 150, 250, 350 are so-called 18650 size cylindrical cells with a diameter of 18 mm and a length of 65 mm. placed facing the direction Therefore, the sizes of the battery packs 150, 250, 350 in the front-rear direction and the left-right direction are approximately the same, and there is little variation in size.

The battery pack 150 manufactured in-house is provided with the latch button 158 on the battery pack 150 side, but the battery pack 250 is not provided with the latch button, but instead is provided with the latch button 238 on the adapter 200 side. The battery pack 350 is provided with a latch button on the front side surface of the case (not visible in the figure). By attaching the adapters 100, 200, and 300 to the adapter attachment portion 10 of the electrical device body 1 in this way, the battery packs 150, 250, and 350 corresponding to the adapters can be attached. Adapters 100, 200, and 300 are included as accessories of electrical equipment (electrical equipment main body 1) to be sold, and are adapted to any of battery packs 150, 250, and 350 used by the purchaser. By selectively selecting the adapters 100, 200, 300 to be attached to the battery packs 150, 250, 350 of each company, a user-friendly electric device can be realized. In addition, when the adapters 100, 200, 300 and the terminal units 130, 230, 330 need to be replaced due to deterioration of the adapters or the terminal units, the electrical equipment can be easily replaced with new adapters or terminal units. can be realized.

Next, connection circuits between the electrical equipment body 1 and the battery packs 150, 250, and 350 will be described with reference to FIGS. 5 to 7. FIG. FIG. 5 is a connection circuit diagram when a battery pack 150 made by our company is attached to the electrical equipment main body 1 using the first adapter 100 .

FIG. 5 is a circuit diagram when a battery pack 150 manufactured by the same company as the electric device main body 1 (manufactured by the same company) as that of the electric device main body 1 is attached to the electric device main body 1 of FIG. A first adapter 100 is connected to the electrical equipment body 1 . That is, the first adapter 100 is interposed between the electrical equipment body 1 and the battery pack 150 as shown in FIG. 4(A). Although any type of motor 5 can be used for the electric equipment main body 1, a three-phase brushless DC motor is used in this embodiment. The brushless DC motor includes a rotor 5a including a plurality of sets (two sets in this embodiment) of permanent magnets (magnets) including N and S poles, and a star-connected three-phase stationary magnet. A stator 5b composed of child windings U, V, and W, and three rotational position detection elements ( Hall element) 56 . Based on the position detection signals from these rotational position detection elements 56, the direction and time of energization of the stator windings U, V, W are controlled, and the motor 5 rotates.

The motor 5 is driven by an inverter circuit having six switching elements Q1-Q6 such as FETs connected in a three-phase bridge configuration. Each gate of the six bridge-connected switching elements Q1 to Q6 is connected to a control signal circuit 51, and each drain or each source of the six switching elements Q1 to Q6 is connected to a star-connected stator winding U. , V, W. As a result, the six switching elements Q1 to Q6 perform switching operations according to the switching element drive signals (drive signals such as H4, H5, H6, etc.) input from the control signal circuit 51, and the battery pack voltage is applied to the inverter circuit. The DC voltage of 150 is supplied to the stator windings U, V and W as three-phase (U-phase, V-phase and W-phase) voltages Vu, Vv and Vw.

Of the switching element drive signals (three-phase signals) that drive the gates of the six switching elements Q1 to Q6, the three negative power supply side (lower arm side) switching elements Q4, Q5, and Q6 are pulse width modulated signals. (PWM signals) are supplied as H4, H5, and H6, and the switch operation detection circuit 59 detects the movement amount (stroke) of the trigger lever 6a that operates the trigger switch 6 by the calculation unit 50, and the detection signal is sent to the calculation unit 50. output to The calculation unit 50 adjusts the amount of power supplied to the motor 5 by changing the pulse width (duty ratio) of the PWM signal based on the output of the switch operation detection circuit 59, and controls the start/stop and rotation speed of the motor 5. do.

Although not shown, the arithmetic unit 50 includes a central processing unit (CPU) for outputting drive signals based on processing programs and data, a ROM for storing processing programs and control data, and a ROM for temporarily storing data. RAM, a timer, and the like. A reference voltage VCC (for example, +5V) for operating the computing unit 50 is generated by a power supply unit (not shown) connected to the positive connector 21 and the negative connector 22, and supplied to the computing unit 50 and other electronic circuits. .

The calculation unit 50 forms a drive signal for alternately switching predetermined switching elements Q 1 to Q 6 based on the output signal of the rotational position detection circuit 54 and outputs the drive signal to the control signal circuit 51 . As a result, predetermined windings of the stator windings U, V, and W are alternately energized to rotate the rotor 5a in the set rotation direction. The current value supplied to the motor 5 is detected by the current detection circuit 53 by detecting the voltage across the shunt resistor 57, and the rotation speed of the motor 5 is detected by the rotation speed detection circuit 55 using the output of the rotation position detection circuit 54. These values are detected and fed back to the computing unit 50 to adjust the set driving power (rotational speed).

A power supply unit (not shown) uses power from the positive connector 21 and the negative connector 22 to generate a reference voltage (eg, 5 V) for operating the arithmetic unit 50. For example, a constant voltage conversion circuit using a three-terminal regulator is used. Used. A capacitor 58 is connected between the positive connector 21 and the negative connector 22 for smoothing.

The battery pack 150 is a self-manufactured battery pack. The battery pack 150 accommodates a battery cell group 155, for example, ten lithium-ion battery cells with a rating of 3.6V. is obtained (the state of parallel connection is not shown in the figure). The positive electrode on the battery cell group 155 side is connected to the positive connector 21 via the positive input terminal 131 (see FIG. 3) and the connector 141 (see FIG. 1) from the positive terminal 181, and the negative electrode on the battery cell group 155 side is the negative electrode. The terminal 182 is connected to the negative connector 22 via the negative input terminal 132 (see FIG. 3) and the connector 142 (see FIG. 1).

A computing unit 160 is provided in the battery pack 150 . The arithmetic unit 160 includes a microcomputer, which measures the voltage of each battery cell and manages charging and discharging of the battery cell. The microcomputer of the calculation unit 160 outputs a discharge prohibition signal (LD signal, which is an abnormal signal) to stop the use of the battery pack 150 as a whole when any one of the battery cells in the battery cell group 155 is in an over-discharged state. ) 183 a through a communication terminal (signal terminal, LD terminal) 183 . The communication terminal 183 is connected from the signal terminal 133 (see FIG. 3) to the signal terminal (LD terminal) 23 on the side of the electrical equipment main body 1 (the side of the first adapter 100) via the connector 143 (see FIG. 3). A signal is transmitted to the microcomputer of the calculation unit 50 .

FIG. 6(A) is a circuit diagram when a battery pack 250 manufactured by Company A is attached to the electrical equipment main body 1 of FIG. 1 via a second adapter 200 for Company A. FIG. The battery pack 250 accommodates, for example, 10 lithium-ion battery cell groups 255 rated at 3.6 V. Two groups of five battery cells are connected in series, and these are connected in parallel to obtain an output rated at 18 V. (The figure does not show the state of parallel connection). The positive electrode on the battery cell group 255 side passes through the positive electrode terminal 281→positive input terminal 231 of the second adapter 200 (see FIG. 3)→connector 241 of the second adapter 200 (see FIG. 1) to the positive connector of the electrical device main body 1. 21. The negative electrode on the battery cell group 255 side is connected to the negative connector 22 of the electrical device main body 1 via the negative terminal 282→the negative input terminal 232 of the second adapter 200→the connector 242 of the second adapter 200 (see FIG. 1). .

A computing unit 251 is provided in the battery pack 250 . The calculation unit 251 includes a microcomputer, which measures each voltage of the battery cells and manages charging and discharging of the battery cells. The microcomputer of the calculation unit 251 outputs the temperature signal 264 of the battery cell group 255 to the second signal terminal 284 . In addition, when the microcomputer of the calculation unit 251 detects that one of the battery cell groups 155 is in an abnormal state such as an overload state or an overdischarge state, it outputs the overload signal 265 to the third signal terminal 285. do. The third signal terminal 285 is connected to the third signal connector 25 via the third communication terminal 235 of the second adapter 200→the connector 245 of the second adapter 200 (see FIG. 2). Furthermore, the microcomputer of the calculation unit 251 connects a communication line (communication signal) 263 for communicating with the calculation unit 50 on the electrical equipment main body 1 side to the first signal terminal 283 .

The first signal terminal 283 is the first communication terminal 233 of the second adapter 200 (see FIG. 3)→the connector 243 of the second adapter 200 (see FIG. 2) to become the first communication terminal of the electrical equipment main body 1. 23. The second signal terminal 284 becomes the second communication terminal of the electrical equipment main body 1 via the second communication terminal 234 of the second adapter 200 (see FIG. 3)→the connector 244 of the second adapter 200 (see FIG. 2). It is connected to connector 24 . In this way, the output terminals 283 to 285 of the battery pack 250 manufactured by Company A are all connected to the input terminals on the side of the electrical equipment body 1 via the second adapter 200 . In order to make this configuration possible, the electrical equipment main body 1 side is provided with signal input terminals (connectors 23 to 25) in a number corresponding to the battery pack 250 manufactured by Company A, and is connected to the microcomputer of the calculation unit 50. It should be kept.

FIG. 6(B) is a circuit diagram when a battery pack 350 manufactured by Company B is attached to the electrical equipment main body 1 of FIG. 1 via a third adapter 300 for Company B. FIG. The battery pack 350 accommodates, for example, ten lithium-ion battery cell groups 355 rated at 3.6 V. Five battery cells are arranged in series into two sets, which are connected in parallel to obtain an output rated at 18 V. (The figure does not show the state of parallel connection). The positive electrode on the battery cell group 355 side passes through the positive electrode terminal 381, and the positive electrode connector 21 of the electrical equipment main body 1 passes through the positive input terminal 331 (see FIG. 3) of the third adapter 300 →the connector 341 (see FIG. 1) of the third adapter 300. ) to the positive connector 21 of the electrical equipment main body 1 . Further, the negative electrode on the battery cell group 355 side is connected from the negative electrode terminal 382 to the negative electrode input terminal 332 (see FIG. 3) of the third adapter 300 →the connector 342 (see FIG. 1) of the third adapter 300 to the electric device main body. 1 is connected to the negative connector 22 .

A computing unit 351 is provided in the battery pack 350 . The configuration of the calculation unit 351 is similar to that of the calculation unit 251 shown in FIG. 6(A). The first signal terminal 383 is connected to the connector 24 of the electric device body 1 via the signal terminal 333 of the third adapter 300 (see FIG. 3)→the connector 343 of the third adapter 300 (see FIG. 2). The second signal terminal 384 is connected to the connector 25 via the signal terminal 334 of the third adapter 300 (see FIG. 3)→the connector 344 of the third adapter 300 (see FIG. 2). On the other hand, connector 23 of electrical equipment main body 1 is not electrically connected to any terminal of battery pack 350 . In this way, only the signal terminals 383 and 384 of the battery pack 350 manufactured by Company B are connected to the input terminals (the signal terminals of the third adapter 300) on the side of the electrical equipment main body 1. FIG. The microcomputer of the calculation unit 351 outputs the temperature signal 363 of the battery cell group 355 to the first signal terminal 383 . In addition, when the microcomputer of the calculation unit 351 detects that any one of the battery cell groups 155 is in an abnormal state such as an overload state or an overdischarge state, it outputs an overload signal 364 to the second signal terminal 384. do.

FIG. 7 is a flow showing an adapter determination processing procedure of the calculation unit 50 of the electrical equipment main body 1. As shown in FIG. As shown in FIG. 5, the third communication terminal of the electrical equipment main body 1 is the LD input terminal (the connector 23 in FIG. 5, the first adapter 100, and when a battery pack 250 manufactured by Company A is attached as shown in FIG. Determination (switching) of whether the input signal input to the third communication terminal is the LD input signal or the temperature signal can be determined by the calculation unit 50 monitoring changes in the input voltage. In FIG. 7, when one of the battery packs 150, 250 and 350 is attached to the electrical equipment main body 1 (one of the adapters 100, 200 and 300), a power supply (not shown) (constant voltage circuit) in the electrical equipment main body 1 ) to supply the reference voltage VCC to the arithmetic unit 50, the microcomputer in the arithmetic unit 50 is activated. When the microcomputer starts up, the operation shown in the flowchart of FIG. 7 is executed as one of the control programs for starting up the electrical equipment main body 1 . The procedure shown in FIG. 7 can be executed by software using a program stored in the computing unit 50 in advance.

First, the microcomputer of the calculation unit 50 determines whether or not the connection terminals (183, 284) of the battery packs (150, 250, 350) are connected to the first connector 23 (step 91). This determination can be made based on a change in the signal level of the first connector 23, the presence or absence of a signal, and the like. If it is determined in step 91 that there is no signal input to the first connector 23, the battery pack (150, 250, 350) that can be connected to the electrical equipment main body 1 does not use the first connector 23. Since there is only the battery pack 350 manufactured by the same company, it is determined that the battery pack 350 is attached (step 95). If it is determined in step 91 that there is a signal input to the first connector 23, it is determined whether or not there is a voltage change in the input signal within 1 millisecond thereafter (step 92). In step 92, when the voltage is received continuously for 1 millisecond or longer, the input signal is determined to be an abnormal signal (LD signal) 183a output from the battery pack 150 (step 94), and the attached It is determined that the battery pack 150 is for the battery pack 150 (step 94). The LD signal 183a (see FIG. 5) maintains High level when discharging from the battery pack 150 is permitted, and becomes High level when discharging from the battery pack 150 is prohibited due to an abnormality such as overdischarge. to the Low level (ground potential), but the LD signal does not change within a short period of time immediately after the battery pack 150 is attached to the electrical equipment body 1 . On the other hand, in step 92, if a voltage change that switches between High level and Low level is confirmed within 1 millisecond, it is determined that the input signal is for communication, and the battery pack 250 for company A is used for communication. It is determined that the signal is from line 263 (step 93).

As described above, by executing the procedure shown in the flowchart of FIG. 7, the calculation unit 50 of the electric device body 1 can determine which battery pack (150, 250, 350) is attached. Therefore, the manufacturer who sells the electric equipment main body 1 judges the input signals from the prepared adapters (100, 200, 300) and the corresponding battery packs (150, 250, 350) and the first to third signals By assigning the terminals 33 to 35, it becomes possible to use battery packs (250, 350) manufactured by other companies. If the user can attach and detach the adapters (100, 200, 300) to and from the electrical equipment body 1, the electrical equipment system having the plurality of adapters (100, 200, 300) shown in FIG. can be realized.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. In the above-described embodiments, only the battery packs 250 and 350 were described as examples of battery packs of other companies. can be configured to use In the above-described embodiment, the adapters 100, 200, and 300 are for company use, company A, and company B, respectively. ), and for example, the adapters 100, 200, and 300 may be configured to be exchanged depending on the difference in rated voltage between the battery pack manufactured by the company and the main body of the electrical equipment.

1 Electrical Device Main Body 2 Main Housing 3 Split Housing 3L Left Side Piece 3R Right Side Piece 3a Body Part 3b Grip Part 4 Cylindrical Case 5 Motor 5a Rotor 5b Stator 6 Trigger Switch 6a Trigger Lever 9 Output Shaft 10 Adapter Mounting Part 11 Upper Wall Part 12 Cylindrical portion 12a (cylindrical portion) opening 13 Hook 14 Elastic member mounting portion 15 Operation panel 21 Positive connector 22 Negative connector 23 First signal connector 24 Second signal connector 25 Third signal connectors 31 to 35 Wiring 50 Arithmetic unit 51 Control signal circuit 53 Current detection circuit 54 Rotation position detection circuit 55 Rotation speed detection circuit 56 Rotation position detection element 57 Shunt resistor 58 Capacitor 59 Switch operation detection circuit 100 First adapter 101 Case 101L Left side piece 101R (of the case) Right side piece 102 (of case) Mounting portion 103 Engagement portion 104 Groove portion 111 Openings 114, 116 Rail 115 Recesses 118, 119 Screw 123 Dummy terminal 130 Terminal portion 130a Base portion 130b Upper wall portion 131 Positive input terminal 132 Negative input terminal 133 Signal terminals (communication terminals, LD terminals) 141 to 143 Connector 150 Battery pack 155 Battery cell group 158 Latch button 160 Operation unit 181 Positive terminal 182 Negative terminal 183 Communication terminal 183a Abnormal signal (LD signal) 200 Second adapter 201 Case 201R Right side piece 201L (of case) Left side piece 202 (of case) Mounting part
202L, 202R cut-out hole 211 opening 214, 216 rail 215 rotating portion 218, 219 screw 230 terminal portion 230a base portion 230b upper wall portion 231 positive input terminal 232 negative input terminal 233 (first) communication terminal 234 (second ) communication terminal 235 (third) communication terminal 238 latch button 241 to 245 connector 250 battery pack 251 calculation unit 255 battery cell group 263 communication signal 264 temperature signal 265 overload signal 281 positive terminal 282 negative terminal 283 to 285 signal terminal 300 3 Adapter 301 Case 301L (Case) Left Side 301R (Case) Right Side 309 Recess 311 Opening 313 Claw 314, 316 Rail 323 Dummy terminal 330 Terminal 330a Base 330b Upper wall 331 Positive input terminal 332 Negative Input terminals 333, 333 Signal terminal 334 Overload terminals 341 to 343 Connector 350 Battery pack 351 Operation unit 355 Battery cell group 363 Temperature signal 364 Overload signal 381 Positive terminal 382 Negative terminal 383, 384 Signal terminal VCC Reference voltage

Claims (15)

a body portion having a load portion, a control portion for controlling the load portion, and a body-side terminal portion connected to wiring extending from either the load portion or the control portion;
a battery pack connection portion having a first connection portion that is mechanically and electrically connectable to the main body portion, and a second connection portion that is mechanically and electrically connectable to the battery pack; An electrical device equipped with
The battery pack connection portion includes a first terminal portion provided in the first connection portion and connected to the main body side terminal portion, and a first terminal portion provided in the second connection portion and connected to a battery side terminal portion of the battery pack. a terminal portion having a second terminal portion;
The electric device, wherein the first connection portion is detachably connected to the body portion, and the first terminal portion is detachably connected to the body side terminal portion. a body portion having a load portion, a control portion for controlling the load portion, and a body-side terminal portion connected to wiring extending from either the load portion or the control portion;
a battery pack connection portion having a first connection portion that is mechanically and electrically connectable to the main body portion, and a second connection portion that is mechanically and electrically connectable to the battery pack; An electrical device equipped with
The battery pack connection portion includes a first battery pack connection portion having a first battery connection portion provided with a battery side terminal portion, to which a first battery pack can be connected, and a battery side terminal portion provided with the first battery connection portion. and at least one of a second battery pack connecting portion to which a second battery pack having a second battery connecting portion having a structure different from the portion can be connected,
The electric device, wherein the main body portion can be selectively attached to one of the first battery pack connection portion and the second battery pack connection portion. a body portion having a load portion, a control portion for controlling the load portion, and a body-side terminal portion connected to wiring extending from either the load portion or the control portion;
a battery pack connection portion having a first connection portion that is mechanically and electrically connectable to the main body portion, and a second connection portion that is mechanically and electrically connectable to the battery pack; An electrical device equipped with
An electrical device, wherein the first connection portion and the main body portion are directly engaged so as not to move relative to each other. The electrical equipment according to any one of claims 1 to 3,
The body portion has a body-side terminal portion,
The battery pack connection portion includes a first terminal portion connected to the main body side terminal portion, a second terminal portion connected to the battery side terminal portion of the battery pack, and a rail portion that guides the connection of the battery pack. and
The body-side terminal portion is connected to the first terminal portion in a first connection form when the first battery pack connection portion is attached to the body portion, and the second battery pack connection portion is attached to the body portion. is attached, the electrical device is connected to the first terminal portion in a second connection mode different from the first connection mode. The electrical device according to claim 4,
The body-side terminal portion includes a power terminal and a signal terminal,
The signal terminal is connected to the control unit of the electrical device by signal wiring,
An electric device, wherein the power terminal is connected to a load portion by power wiring. The electrical equipment according to any one of claims 1 to 5,
A mounting portion for mounting the first battery pack connection portion and the second battery pack connection portion is formed in the main body portion,
The first battery pack connection portion and the second battery pack connection portion each have a split type case, and the split type case sandwiches the mounting portion so that the first battery pack connection portion or the second battery pack connection portion An electric device, wherein the second battery pack connection portion is alternatively fixed to the main body portion. The electrical device according to claim 6,
Having a pair of rails for guiding the connection of the battery pack,
An electrical device, wherein one of the pair of rails is formed on one side of the split type case, and the other side is formed on the other side of the case. The electrical device according to claim 5,
The signal terminal is formed of a connector,
The electrical equipment, wherein the connector is connected to the first terminal portion. The electrical device according to claim 8,
The electric device, wherein the battery pack connecting portion has an insulated dummy terminal capable of holding the connector that is not connected to the first terminal portion. The electrical device according to claim 6 or 7,
The first terminal portion and the second terminal portion are fixed to terminal portions sandwiched by the split case,
The first terminal portion is provided above the terminal portion,
An electrical device, wherein the second connection portion is provided below the terminal portion. The electrical device according to claim 10,
The divided case has a first clamping portion and a second clamping portion,
The first clamping portion clamps the mounting portion of the main body,
The electric device, wherein the two clamping portions clamp the terminal portion. The electrical device according to any one of claims 1 to 11,
An electric device comprising: the first battery pack connecting portion; and the second battery pack connecting portion. An electrical device that can be attached to and detached from a main body portion having a load portion, and in which the main body portion and a battery pack can be mechanically and electrically connected,
The electrical device includes a first battery pack connection section to which a first battery pack having a first connection section can be connected,
The first battery pack connection portion includes a first terminal portion having a first terminal portion connected to the main body side terminal portion and a second terminal portion connected to the battery side terminal portion of the battery pack,
An electrical device, wherein the body-side terminal portion and the first terminal portion are fitted to each other and are mechanically and electrically connected. The electrical device according to claim 13,
The electrical device is characterized by having a second electrical device configured with a second battery pack connecting portion to which a second battery pack having a second connecting portion having a structure different from that of the first connecting portion can be connected. electrical equipment. The electrical device according to claim 14,
The second battery pack connection portion includes a second terminal portion having a third terminal portion connected to the main body side terminal portion and a fourth terminal portion connected to the battery side terminal portion of the battery pack,
An electrical device, wherein the body-side terminal portion and the third terminal portion are fitted to each other and are mechanically and electrically connected.

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