Electric equipment

Abstract

This invention provides an electric device that improves the degree of freedom of electrical connection to the connected part while ensuring the strength to withstand battery installation and removal, and suppresses the transmission of vibrations caused by battery installation and removal to the connected part. The electric device includes a conductive contact portion (160), a mounting portion (161), and a motor. The mounting portion (161) is fitted with the contact portion (160). The motor operates by obtaining power from the battery (4) via the contact portion (160). The contact portion (160) is formed as a single plate integrally having a first connecting portion (1600) and a second connecting portion (1601). The first connecting portion (1600) is mechanically and electrically connected to the battery (4) and is detachably connected. The second connecting portion (1601) is electrically connected to the connected part. The second connecting portion (1601) is thinner than the first connecting portion (1600).

Description

Technical Field

[0001] An embodiment of the present invention relates to an electric device including a motor that operates by obtaining power from a detachable battery via a contact portion. Background Art

[0002] In the past, among electric devices that use batteries as power sources to operate electric motors, there are known electric devices in which the batteries can be detached. The contact portion for mechanically and electrically receiving the battery is usually formed of a conductive metal plate, and is set to a wall thickness greater than a specified value so as to be able to withstand the impact of the battery when it is detached. On the other hand, since the contact portion is electrically connected to the control circuit of the motor, etc., it is preferred that various electrical connection methods such as crimping terminals or sealing can be applied. In addition, it is hoped that the vibration and impact generated when the battery is detached from the contact portion will not be transmitted to the control circuit, etc.

[0003] Patent Document 1: International Publication No. 2018 / 079723 Summary of the invention

[0004] The problem to be solved by the present invention is to provide an electric device that can improve the degree of freedom of electrical connection with a connected part while ensuring strength to withstand battery removal, and can suppress the transmission of vibration generated by battery removal to the connected part.

[0005] The electric device of the embodiment comprises a conductive contact portion, a mounting portion, and a motor. The mounting portion is mounted with the contact portion. The motor operates by obtaining power from a battery via the contact portion. The contact portion is formed as a plate integrally having a first connecting portion and a second connecting portion. The first connecting portion is mechanically and electrically connected to the battery and can be detachably connected. The second connecting portion is electrically connected to the connected portion. The second connecting portion is thinner than the first connecting portion.

[0006] Effects of the Invention

[0007] According to the present invention, the degree of freedom of electrical connection with the connected portion can be improved while ensuring strength that can withstand battery attachment and detachment, and vibration generated by battery attachment and detachment can be suppressed from being transmitted to the connected portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a plan view showing a contact assembly portion of the electric device according to the first embodiment.

[0009] Figure 2 This is a cross-sectional view of the contact assembly of the electric device at the position of the contact portion.

[0010] Figure 3 It is a perspective view showing a state where a contact assembly portion is removed from a main body portion of the same electric device.

[0011] Figure 4 It is a perspective view showing a state where a battery is removed from a main body of the electric device.

[0012] Figure 5 It is a perspective view showing the positional relationship between the contact assembly part and the connected part of the above electric device.

[0013] Figure 6 This is a perspective view showing a state where a battery is mounted on the main body of the electric device.

[0014] Figure 7 It is a three-dimensional diagram showing the same electric device.

[0015] Figure 8 It is a cross-sectional view at the position of the contact portion of the contact assembly portion of the electric device according to the second embodiment.

[0016] Explanation of symbols

[0017] VC Electric Equipment

[0018] 1 Main body

[0019] 2 Electric motor

[0020] 4 Batteries

[0021] 8 Connected part

[0022] 9 Wire

[0023] 155 Opening

[0024] 160 Contact part

[0025] 161 Installation Department

[0026] 1600 First connection

[0027] 1601 Second connection

[0028] 1603 Narrow part

[0029] 16002 Width Variation DETAILED DESCRIPTION

[0030] (First embodiment)

[0031] Hereinafter, a first embodiment will be described with reference to the drawings.

[0032] exist Figure 7VC represents an electric device. The electric device VC includes a main body 1. The main body 1 includes a motor 2 and a control unit 3 for controlling the operation of the motor 2. The electric device VC is configured to obtain power from a battery 4 disposed in the main body 1 and operate the motor 2 through the control unit 3. The battery 4 is preferably a rechargeable secondary battery. As an example, the battery 4 is a battery pack, which includes a plurality of, for example, five lithium-ion battery cells and a control circuit. The battery 4 can be detached from the main body 1. In this embodiment, the battery 4 can be detached from the main body 1 without using tools or the like. For example, the battery 4 is installed in the main body 1 when the user of the electric device VC uses it, and can be removed from the main body 1 when not in use or when charging. For the control unit 3, the on / off of the operation of the motor 2 is set by the setting unit 5. In this embodiment, the electric device VC is an electric device for dust collection or an electric vacuum cleaner in which the motor 2 is provided in an electric blower and dust is sucked by the operation of the motor 2. However, the present invention is not limited to this, and the electric device VC can also be applied to various electric tools using the electric motor 2 .

[0033] In the example shown in the figure, the main body 1 is formed in an elongated shape. The outer shell of the main body 1 is composed of a main body shell 10. The main body shell 10 is formed of, for example, a synthetic resin. The motor 2 and the control unit 3 are accommodated inside the main body shell 10. A main body suction port 11 for sucking dust-containing air is formed in the main body 1. An extension pipe 6 that is a straight pipe portion as an air path body, or a dust suction head 7 such as a suction port body as an air path body is detachably connected to the main body suction port 11. In addition, a dust collecting unit 12 for collecting dust in the dust-containing air sucked from the main body suction port 11 is arranged in the main body 1. The dust collecting unit 12 can be a dust collecting device such as a dust cup that can be detached from the main body 1, or a dust collecting bag, a filter, etc. arranged inside the main body 1. In addition, a main body discharge port 13 is formed in the main body 1 for discharging air after dust is separated. In addition, as an example, the electric device VC is a handheld electric vacuum cleaner that is operated by holding the main body 1 to perform dust collection. Therefore, in this embodiment, a grip portion 14 to be gripped by a user is formed on the main body 1. In the example shown in the figure, the setting portion 5 is arranged on the grip portion 14.

[0034] Moreover, if Figure 4As shown in the figure, a battery disassembly portion 15 for disassembling and assembling the battery 4 is formed in the main body 1. In the present embodiment, the battery disassembly portion 15 is recessed outside the main body 1. The battery disassembly portion 15 is located outside the main body shell 10 and can be visually observed when the battery 4 is disassembled. In addition, by installing the battery 4, a part of the battery disassembly portion 15 is blocked by the battery 4. That is, in the present embodiment, the battery 4 is externally mounted on the main body 1. The battery disassembly portion 15 is located at the end of the main body 1.

[0035] In order to make the description clear, Figure 4 The up-down direction shown is defined as the up-down direction as the first direction, the direction perpendicular to the up-down direction and along the long side direction of the main body 1 is defined as the front-back direction as the second direction, and the direction perpendicular to the up-down direction and the front-back direction is defined as the left-right direction or the two-side direction as the third direction. Figure 3 The direction of arrow D1a shown is set to the upper direction, the direction of arrow D1b is set to the lower direction, the direction of arrow D2a is set to the front direction, the direction of arrow D2b is set to the rear direction, the direction of arrow D3a is set to the left direction, and the direction of arrow D3b is set to the right direction. Figures 1 to 6 In, based on Figure 4 The directions of the arrows are recorded in accordance with the directions defined in. In addition, these up-down directions, left-right directions or both sides directions, and front-back directions are used for the present description and do not represent the usage state or usage posture of the electric device VC.

[0036] The battery detachable portion 15 has an opposing portion 150 that is opposed to the battery 4. The opposing portion 150 forms a part of the main body case 10 and is a wall portion that separates the battery 4 mounted on the battery detachable portion 15 from the inside of the main body case 10. In the present embodiment, the opposing portion 150 is formed in a planar shape that extends in the front-rear direction and the left-right direction.

[0037] In addition, the battery disassembly and assembly part 15 has a restriction part 151 that restricts the position of the battery 4 in the left-right direction relative to the battery disassembly and assembly part 15. The restriction part 151 is formed in a wall-like manner from the left and right side parts of the opposing part 150. The restriction part 151 is formed in a long strip shape along the front-back direction. In addition, a support part 152 that supports the battery 4 relative to the main body 1 is formed in the restriction part 151. The support part 152 hooks and supports the battery 4 relative to its own weight. The support part 152 is formed to protrude from the restriction part 151 to the central part side in the left-right direction of the battery disassembly and assembly part 15. The restriction part 151 and the support part 152 have the function of a guide part that guides the battery 4 along the disassembly and assembly direction relative to the main body 1. In the present embodiment, the battery 4 is installed by sliding from the rear to the front along the front-back direction relative to the battery disassembly and assembly part 15 of the main body 1, and is removed by sliding from the front to the rear along the front-back direction. In the example shown in the figure, the battery 4 is disassembled along the front-back direction relative to the battery disassembly and assembly part 15 of the main body 1.

[0038] In addition, the battery 4 installed in the battery detachable part 15 is detachably detachably detached by the battery detachable part 15 or the main body 1 through the catching part 153. In this embodiment, the catching part 153 is a clamp that is actuated by the user's operation. The catching part 153 includes a catching claw part 1530 located on the battery detachable part 15 and an operated part 1531 located outside the battery detachable part 15.

[0039] The latch claw 1530 is urged in a direction to latch the battery 4 by a latch urging mechanism such as a spring as an elastic body. When the battery 4 is installed in the battery installation portion 15, the latch claw 1530 is inserted into the latch receiving portion of the battery 4 to latch the battery 4, and is covered by the battery 4 without being exposed externally.

[0040] The operated portion 1531 can be operated by the user to resist the urging force of the urging mechanism and retract the locking claw portion 1530 from the locking receiving portion of the battery 4. In this embodiment, the operated portion 1531 is a handle portion located in front of the battery detachable portion 15 and slidable in the front-rear direction.

[0041] Furthermore, in the present embodiment, the battery removal and installation portion 15 has a stopper 154. The stopper 154 regulates the end of the installation direction of the battery 4 by abutting against the battery 4 that has slid in the installation direction. The stopper 154 is formed to stand up in a wall shape from the front end of the opposing portion 150. The stopper 154 is formed to extend in the left-right direction. In the present embodiment, a locking claw portion 1530 is arranged at a position protruding rearward from the stopper 154.

[0042] Then, if Figure 3 as well as Figure 4As shown, the battery assembly part 15 has a contact assembly part 16 that electrically connects the battery 4 to the control part 3. In the present embodiment, the contact assembly part 16 is formed in a unit shape independent of the main body housing 10. In the example shown in the figure, the contact assembly part 16 is mounted on an opening part 155 formed in the battery assembly part 15. The contact assembly part 16 is configured so that it can be easily assembled and disassembled relative to the main body 1 using a tool or the like without disassembling the main body 1. As an example, the contact assembly part 16 is configured so that it can be assembled and disassembled relative to the main body 1 using a fixing body S such as a screw. The opening part 155 is opened in the main body housing 10 in a hole shape. The control part 3 is located at a position facing the opening part 155. That is, at least a part of the control part 3 can be exposed from the opening part 155. In the present embodiment, the opening part 155 is located at the front end of the opposing part 150. The opening part 155 is formed to have a predetermined size in the left-right direction. In the present embodiment, the opening part 155 is formed to be a size that can accommodate an adult's finger. In the example shown in the figure, the opening 155 is formed over the facing portion 150 and the stopper 154. As an example, the opening 155 is located between the left and right locking claws 1530. The contact assembly 16 closes the opening 155 when mounted on the opening 155. That is, the contact assembly 16 forms a part of the outer shell of the main body 1.

[0043] The contact assembly portion 16 includes a contact portion 160 and a mounting portion 161 as a mounting base to which the contact portion 160 is mounted.

[0044] The contact portion 160 is formed of a conductive metal. The contact portion 160 is made of copper, for example. The contact portion 160 is formed by stamping. The contact portion 160 is formed of a plate. The contact portion 160 is formed so that there are no overlapping parts in the thickness direction. In the present embodiment, the contact portion 160 is formed in the shape of a flat plate without a part bent in the thickness direction. In addition, the contact portion 160 is formed in the shape of a long strip. The contact portion 160 extends in the shape of a long strip in a direction intersecting or orthogonal to the thickness direction. In the present embodiment, the contact portion 160 configures the long side direction as the front-to-back direction and the thickness direction as the left-to-right direction. The surface of the contact portion 160 may also be electroplated for reinforcement.

[0045] The contact portion 160 electrically and mechanically connects the battery 4 to the connected portion 8. The contact portion 160 has a first connection portion 1600 and a second connection portion 1601. Figure 1 As shown, in the present embodiment, the contact portion 160 further includes an intermediate portion 1602 between the first connection portion 1600 and the second connection portion 1601 for connecting them.

[0046] The first connection portion 1600 is formed at the rear end side as one end side in the long side direction of the contact portion 160. The first connection portion 1600 is a battery connection portion that is mechanically and electrically connected to the battery 4 and can be detached. In the present embodiment, the first connection portion 1600 is mechanically inserted into the blade receiving portion 40 of the battery 4 and is electrically connected to the battery 4 via the blade receiving portion 40. The blade receiving portion 40 is formed into a leaf spring shape by a member having conductive metal or the like, and is formed in a manner that sandwiches the first connection portion 1600. In addition, in Figure 1 In FIG. 1 , for the sake of clarity of description, the blade receiving portion 40 is shown only for the first connecting portion 1600 of one contact portion 160 .

[0047] In the present embodiment, the first connection portion 1600 is a portion at least a portion of which is exposed to the outside of the main body 1 or the main housing 10. In the illustrated example, the first connection portion 1600 is such that the front end portion and the lower end portion are embedded in the mounting portion 161, and the other portion is exposed from the mounting portion 161. The first connection portion 1600 is formed in a substantially quadrilateral shape. In the present embodiment, the first connection portion 1600 is formed in a rectangular shape that is longer in the long side direction of the contact portion 160. The long side dimension of the first connection portion 1600 is set to be longer than the long side dimension of the second connection portion 1601. In addition, the length of the first connection portion 1600 is set to be more than half of the total length of the contact portion 160.

[0048] The first connection portion 1600 basically has a certain or approximately certain thickness. The first connection portion 1600 is a thick-walled portion having a predetermined thickness. The two surfaces of the first connection portion 1600 in the thickness direction are arranged to be parallel or approximately parallel to each other. The two surfaces of the first connection portion 1600 in the thickness direction become planar sliding contact surfaces 16000 for the blade receiving portion 40 of the battery 4 to slide in contact with. The sliding contact surface 16000 is a conductive surface that electrically connects the battery 4 to the contact portion 160.

[0049] In addition, in this embodiment, a first thin-walled portion 16001 whose thickness gradually decreases toward the front end is formed at the rear end portion as one end portion of the first connecting portion 1600. That is, the end portion of the first connecting portion 1600 that receives the battery 4 is thinner than other portions. In the example shown in the figure, the first connecting portion 1600 has a constant or substantially constant thickness in the portion other than the first thin-walled portion 16001.

[0050] In addition, if Figure 2As shown, the first connection portion 1600 is set to have a larger width in a direction intersecting the thickness direction and the long side direction, i.e., in the up-down direction, than the second connection portion 1601. In the present embodiment, the width of the first connection portion 1600 in the up-down direction is set to be larger than the width of the second connection portion 1601 and the middle portion 1602 in the up-down direction. Therefore, a width change portion 16002 having a width change in the up-down direction is formed at the front end portion of the first connection portion 1600, which is the other end portion. In the present embodiment, the width change portion 16002 is formed at the upper and lower ends of the front end portion of the first connection portion 1600, respectively. In the example shown in the figure, the width of the width change portion 16002 in the up-down direction changes sharply to form a step-like shape. The width change portion 16002 is formed in a straight line along the up-down direction. In the present embodiment, the width change portion 16002 is formed at a position where the first connection portion 1600 is connected to the middle portion 1602. The direction and angle of the width change portion 16002 are set so as not to be affected by Figure 1 The mounting of the illustrated battery 4 to the first connecting portion 1600 causes the contact portion 160 to deform.

[0051] And, if Figure 2 As shown in FIG. 1 , when the first connection portion 1600 is observed in the thickness direction, the four corners are curved portions 16003 that are curved in an arc shape. Thus, the first connection portion 1600 is formed so that no convex corners are generated when observed in the thickness direction. In addition, the ridgeline of the first connection portion 1600, the portion of the first connection portion 1600 that constitutes the outer edge portion when observed in the thickness direction, or the left and right side edges of the upper end and the lower end of the first connection portion 1600 are respectively formed into a rounded shape or a rounded chamfered shape that is curved in an arc shape in the thickness direction, so that no corners or edges are generated. Therefore, the first connection portion 1600 is formed so that the four corners and ridgelines when observed in the thickness direction are not prone to electric field concentration.

[0052] The second connection portion 1601 is formed at the front end side as the other end side in the longitudinal direction of the contact portion 160. Figure 3 The connected portion 8 is electrically connected to the control unit 3. In this embodiment, the connected portion 8 is directly configured on the control unit 3. The connected portion 8 can be directly accessed from the opening 155. For example, Figure 5As shown, the connected portion 8 is directly mounted on the plate-shaped substrate of the control portion 3, i.e., the control portion main body 30. In addition, various components 31 are mounted on the control portion main body 30 to form a control circuit. The connected portion 8 is provided with, for example, a conductive terminal portion 8a and a housing of terminals such as crimping terminals, i.e., a terminal receiving portion 8b. In the example shown in the figure, the terminal portion 8a and the terminal receiving portion 8b are arranged along the short side direction at one end portion in the long side direction of the control portion main body 30. In addition, the connected portion 8 is not limited to being directly arranged on the control portion 3, and can also be arranged at a position independent of the control portion 3.

[0053] In addition, if Figure 1 as well as Figure 2 As shown in FIG. 1 , the second connection portion 1601 is electrically and mechanically connected to the conductor 9. The conductor 9 can be electrically and mechanically connected to the second connection portion 1601 in a detachable manner using a terminal 90 such as a crimping terminal represented by a Faston terminal, or can be directly electrically and mechanically connected to the second connection portion 1601 by soldering or the like. Figure 1 In FIG. 1 , for the sake of clarity of description, the terminal 90 is shown only for the second connection portion 1601 of one contact portion 160 .

[0054] In this embodiment, the second connection portion 1601 is received in Figure 3 The main body 1 or the inner part of the main body shell 10 is shown. Figure 1 as well as Figure 2 As shown in the figure, the second connection part 1601 is formed in a substantially quadrilateral shape. In the present embodiment, the second connection part 1601 is formed in a rectangular shape that is long in the long side direction of the contact part 160. The second connection part 1601 basically has a constant or substantially constant thickness. The second connection part 1601 is a thin-walled part having a predetermined thickness smaller than that of the first connection part 1600. In the present embodiment, at the front end portion as the other end portion of the second connection part 1601, a second thin-walled part 16010 is formed whose thickness gradually becomes thinner toward the front end side. In addition, in the example shown in the figure, a hole portion penetrating in the thickness direction, i.e., a holding portion 16011, is formed in the second connection part 1601. The holding portion 16011 is a portion where the protrusion of the terminal 90 is engaged to hold the terminal 90 when the wire 9 is connected through the terminal 90. In addition, when the wire 9 is soldered to the second connection part 1601, the holding portion 16011 is a portion where the front end portion of the wire 9 is inserted and connected. In addition, the ridge line of the second connection portion 1601, the outer edge portion of the second connection portion 1601 when observed along the thickness direction, or the left and right edge portions of the upper and lower ends of the second connection portion 1601 are preferably formed into a rounded shape or a rounded chamfered shape that is bent into an arc shape along the thickness direction, so as to produce no corners or edges.

[0055] The middle part 1602 is a part that integrally connects the first connection part 1600 and the second connection part 1601. The middle part 1602 is such that the rear end side as one end side connected to the first connection part 1600 is set to have a thickness equal to or substantially equal to that of the first connection part 1600, and the front end side as the other end side connected to the second connection part 1601 is set to have a thickness equal to or substantially equal to that of the second connection part 1601. Therefore, in the middle part 1602, a thickness variation part 16020 having a thickness variation is formed between the two ends. The thickness variation part 16020 is preferably formed as an inclined surface whose thickness gradually decreases from the rear end side as one end of the middle part 1602 to the front end side as the other end. In addition, the portion of the thickness variation part 16020 that is convex in the thickness direction is formed into a rounded shape or a rounded chamfered shape that is curved into an arc shape. Preferably, the position where the thickness variation portion 16020 is connected to the first connection portion 1600 is formed into a rounded shape or a rounded chamfered shape bent into an arc shape, and is formed so as not to produce a corner or edge. More preferably, the position where the thickness variation portion 16020 is connected to the second connection portion 1601 is formed into a rounded shape or a rounded chamfered shape bent into an arc shape, and is formed so as not to produce a corner or edge. Therefore, the contact portion 160 is formed so as to extend from the first connection portion 1600 to the second connection portion 1601 without producing a step difference portion or a corner portion where the thickness changes sharply. Therefore, the contact portion 160 is formed so as not to easily produce an electric field concentration caused by the thickness difference between the first connection portion 1600 and the second connection portion 1601. The thickness variation portion 16020 is formed symmetrically or substantially symmetrically with respect to the thickness direction. Through the thickness variation portion 16020, the intermediate portion 1602 is formed so as to change the thickness uniformly or substantially uniformly in the thickness direction. Therefore, in the contact portion 160 , heat generated when the lead wire 9 is soldered to the second connection portion 1601 is evenly dispersed to the left and right.

[0056] At least a portion of the middle portion 1602 is embedded in the mounting portion 161. In the present embodiment, the rear end portion of the middle portion 1602 connected to the first connection portion 1600 is embedded in the mounting portion 161. In the example shown in the figure, the portion of the middle portion 1602 closer to the rear side than the front end portion of the thickness change portion 16020 is embedded in the mounting portion 161. Thus, the contact portion 160 is mounted at a position where the thickness is greater than that of the second connection portion 1601 and is embedded in the mounting portion 161.

[0057] In addition, the width of the middle portion 1602 in the vertical direction is set to be larger than the second connection portion 1601. In the present embodiment, the width of the middle portion 1602 in the vertical direction is set to be smaller than the first connection portion 1600 and larger than the second connection portion 1601. Therefore, at the front end portion of the middle portion 1602, which is the other end portion, an intermediate width changing portion 16021 whose width changes in the vertical direction is formed. In the present embodiment, the intermediate width changing portion 16021 is formed at both upper and lower ends of the front end portion of the middle portion 1602. That is, the intermediate width changing portion 16021 is formed at a position where the middle portion 1602 is connected to the second connection portion 1601. In the present embodiment, the intermediate width changing portion 16021 is located at a position exposed to the front from the mounting portion 161. In the example shown in the figure, the width of the intermediate width changing portion 16021 in the vertical direction changes sharply and is formed in a step shape. The intermediate width changing portion 16021 is formed in a straight line along the vertical direction. The middle width changing portion 16021 functions as a stopper for the terminal 90 of the wire 9. In addition, the ridgeline of the middle portion 1602, the portion constituting the outer edge portion when the middle portion 1602 is viewed in the thickness direction, or the left and right edge portions of the upper end portion and the lower end portion of the middle portion 1602 are preferably formed into a rounded shape or a rounded chamfered shape bent into an arc shape, and are formed so as not to generate corners or edges.

[0058] In the present embodiment, a plurality of contact portions 160 are set. These contact portions 160 are separated from each other at a predetermined interval and exist separately in the left-right direction. The intervals between the contact portions 160 in the left-right direction are set to be constant or approximately constant. In the illustrated example, four contact portions 160 are set. Preferably, the contact portions 160 are set in pairs. For example, two pairs of contact portions 160 are set. One pair of contact portions 160a is a high-power contact portion, a high-voltage contact portion, or a large-current contact portion for power supply, and the other pair of contact portions 160b is a low-power contact portion, a low-voltage contact portion, or a small-current contact portion for signal or information communication. Compared with the contact portion 160b, the contact portion 160a is set to be slightly longer in total length, the thickness of the second connecting portion 1601 is larger, and the width of the second connecting portion 1601 in the up-down direction is larger. For example, the first connection portion 1600 of the contact portion 160a, 160b is set to have a thickness of 1.0 mm or more, the second connection portion 1601 of the contact portion 160a is set to have a thickness of about 0.8 mm, and the second connection portion 1601 of the contact portion 160b is set to have a thickness of about 0.5 mm. In addition, in this embodiment, the contact portion 160a is arranged near both sides of the mounting portion 161, and the contact portion 160b is arranged between these contact portions 160a.

[0059] exist Figure 5In the example shown, the contact portion 160a is electrically and mechanically detachably connected to the terminal portion 8a in the connected portion 8. In addition, the contact portion 160b is electrically and mechanically detachably connected to the terminal receiving portion 8b in the connected portion 8.

[0060] In addition, one of the contacts 160a is a power supply contact, an anode contact, or a high-side contact, and the other is a ground contact, a cathode contact, or a low-side contact. Figure 1 In the example shown, the contact portion 160a1 located on the arrow D3b side is a cathode contact portion or a low-side contact portion, and the contact portion 160a2 located on the arrow D3a side is an anode contact portion or a high-side contact portion. The contact portion 160a1 is located on the rear side of the first connection portion 1600 in the installation direction of the battery 4 relative to the contact portion 160a2. Therefore, when the battery 4 is installed, the contact portion 160a1 is configured to contact the blade receiving portion 40 of the battery 4 at a timing that is earlier than the contact portion 160a2. Figure 1 In the embodiment, the first connection portion 1600 of the contact portion 160a1 extends toward the rear side relative to the first connection portion 1600 of the contact portion 160a2.

[0061] In addition, the contact portion 160 is mounted on the mounting portion 161. In this embodiment, the contact portion 160 is fixed to the mounting portion 161. Figure 4 In the example shown, the mounting portion 161 is a portion that closes the opening 155 when the contact assembly 16 is mounted on the battery mounting and removal portion 15 of the main body 1. The mounting portion 161 has an outer shape set according to the shape of the opening 155.

[0062] like Figure 2 As shown, the mounting portion 161 has a first portion 1610 and a second portion 1611 .

[0063] The first portion 1610 is located below the contact portion 160. In this embodiment, the first portion 1610 supports the contact portion 160. Figure 4 As shown in FIG. 1 , the first portion 1610 is arranged along the opposing portion 150 of the battery detachable portion 15 when the contact assembly portion 16 is mounted on the battery detachable portion 15 of the main body 1. In the present embodiment, the first portion 1610 is formed in a strip shape along the left-right direction. Figure 1 As shown, the contact portions 160 are arranged in a row on the first portion 1610. The upper portion of the first portion 1610 is a first battery facing portion facing the battery 4 mounted on the main body 1.

[0064] In addition, if Figure 2As shown in FIG. 1 , a first groove 16100 is formed on the first portion 1610 along the front-rear direction, into which the lower end of the first connection portion 1600 of the contact portion 160 fits. Figure 3 as well as Figure 4 As shown, the outer edge surface of the end portion of the first portion 1610 located on the opposite side to the second portion 1611, that is, the end surface portion 16101, abuts against the edge portion of the opening portion 155 when the contact assembly portion 16 is attached to the battery assembly portion 15 of the main body portion 1. In this embodiment, the end surface portion 16101 is located at the rear end portion of the first portion 1610.

[0065] The second portion 1611 is a vertical wall portion formed upright from the end of the first portion 1610. In this embodiment, the second portion 1611 is formed upright from the front end of the first portion 1610. Figure 2 As shown in FIG. 1 , the cross section of the mounting portion 161 is formed into an L-shape. Figure 1 As shown in FIG. 1 , the contact portion 160 is arranged in a row at the rear of the second portion 1611. The rear of the second portion 1611 is a second battery facing portion facing the battery 4 mounted on the main body 1. The front end of the first connection portion 1600 is embedded in the rear of the second portion 1611. Figure 4 As shown, the second portion 1611 is arranged to stand forwardly with respect to the stopper 154 of the battery detachable portion 15 when the contact assembly 16 is attached to the battery detachable portion 15 of the main body 1 .

[0066] In addition, if Figure 2As shown, the contact portion 160 is inserted into the second portion 1611. In the present embodiment, a second groove portion 16110 is formed in the second portion 1611 to which the front end portion of the contact portion 160 is fitted, and a hole portion 16111 is formed in the second groove portion 16110 to which the contact portion 160 is inserted. The second groove portion 16110 is connected to the first groove portion 16100 of the first portion 1610. The hole portion 16111 is formed in the center of the second groove portion 16110. In the present embodiment, the middle portion 1602 of the contact portion 160 is inserted into the hole portion 16111, and the upper and lower widths of the hole portion 16111 are smaller than the upper and lower widths of the first connecting portion 1600 of the contact portion 160. Therefore, in the second groove portion 16110, a contact receiving portion 16112 is formed on both sides of the hole portion 16111 to receive and prevent the contact portion 160 from being removed. In the example shown in the figure, the contact receiving portion 16112 is opposite to the width changing portion 16002 of the contact portion 160, and is abutted by the front end of the width changing portion 16002. Therefore, the position of the contact portion 160 is restricted by the abutment of the contact receiving portion 16112 and the width changing portion 16002. In this embodiment, the position of the front of the contact portion 160 is restricted. That is, the position of the contact portion 160 is restricted in the front side of the installation direction of the battery 4. In addition, by the abutment of the contact receiving portion 16112 and the width changing portion 16002, the vibration or impact when the battery 4 is connected to the first connecting portion 1600 is received by the mounting portion 161 via the contact receiving portion 16112.

[0067] In addition, if Figure 3 as well as Figure 4 As shown in the figure, the outer edge surface of the second part 1611 on the opposite side of the first part 1610, that is, the end surface 16113, abuts against the edge of the opening 155 at a position above the contact part 160. In this embodiment, the end surface 16113 is located at the front upper end of the second part 1611. In addition, a contact stopper 161130 is formed on the end surface 16113 to stop the contact assembly part 16 relative to the main body 1. Figure 5 As shown in FIG. 1 , in this embodiment, the contact stopper 161130 is formed as a long groove along the left-right direction. Figure 3 In the illustrated example, the contact locking portion 161130 is hooked on a holding portion 1550 formed at an edge portion of the opening 155 and is held.

[0068] Preferably, the mounting portion 161 is molded from a synthetic resin. As an example, the mounting portion 161 is molded from a thermoplastic resin. More preferably, the mounting portion 161 and the contact portion 160 are integrally molded. For example, in the integral molding of the mounting portion 161 and the contact portion 160, a molding method such as two-color molding or embedded molding is used. In this case, Figure 2The first groove portion 16100 , the second groove portion 16110 , and the hole portion 16111 of the mounting portion 161 are respectively formed by the contact portion 160 .

[0069] In addition, if Figure 1 as well as Figure 3 As shown, in the present embodiment, the mounting portion 161 has a fixed portion 1612 for fixing the mounting portion 161 to the main body 1 in a detachable manner. In the example shown in the figure, the fixed portion 1612 extends to the rear of the first portion 1610. The fixed portion 1612 protrudes rearward from the end surface portion 16101. A fixing hole portion 16120 is formed in the fixed portion 1612. The fixing hole portion 16120 penetrates the fixed portion 1612 in the up-down direction. The fixing body S is inserted into the fixing hole portion 16120. As an example, the fixing body S is a screw or the like.

[0070] The fixed portion 1612 is engaged with the engaging portion 1500 formed in the battery assembly and disassembly portion 15 of the main body 1. The engaging portion 1500 is formed to be connected to the edge of the opening 155. The engaging portion 1500 is formed with a fixed body receiving portion 15000 for fixing the fixed body S inserted into the fixing hole 16120. In the present embodiment, the fixed body receiving portion 15000 is, for example, a fastening hole for fastening the fixed body S.

[0071] Next, the operation of the first embodiment will be described.

[0072] The contact portion 160 is formed, for example, by stamping a conductive metal plate or other plate material. For example, the contact portion 160 is formed by stamping a plate material having the same or substantially the same thickness as the first connection portion 1600 in the thickness direction to form a second connection portion 1601 and an intermediate portion 1602 having a thickness smaller than that of the first connection portion 1600.

[0073] When manufacturing the contact assembly 16 , the preformed contact 160 is placed in a mold and a synthetic resin is injection molded to integrally mold the contact 160 and the mounting portion 161 . Thus, the contact 160 is firmly fixed to the mounting portion 161 .

[0074] The manufactured contact assembly 16 is mounted on the main body 1. The motor 2, the control unit 3, etc. are pre-assembled in the main body 1, and the required wiring is implemented. Figure 3As shown in the figure, a part of the control unit 3 is exposed from the opening 155, and the connected unit 8 installed in the control unit 3 can be accessed from the outside of the opening 155. Therefore, after the wire 9 preliminarily connected to the connected unit 8 is led out from the opening 155 and connected to the second connecting portion 1601 of the contact unit 160 of the contact assembly unit 16 through the terminal 90, the wire 9 is pressed into the inside of the main body 1 from the opening 155, and the contact assembly unit 16 is fitted with the opening 155. At this time, the contact assembly unit 16 hooks the contact stopper 161130 of the mounting portion 161 on the holding portion 1550 of the main body 1, and the end surface portions 16101 and 16113 are respectively abutted against the edge of the opening 155, and the fixed portion 1612 is fitted with the fitting portion 1500. In this state, the opening 155 is covered by the mounting portion 161. Then, the fixing body S is inserted into the fixing hole 16120 of the mounting portion 161 and fixed to the fixing body receiving portion 15000 , whereby the contact assembly portion 16 is positioned in the battery attachment and detachment portion 15 and easily assembled to the main body 1 .

[0075] When the electric device VC is used, the battery 4 is mounted on the battery mounting and dismounting portion 15 of the main body 1. The battery 4 is positioned between the limiting portions 151 on both sides at the rear of the battery mounting and dismounting portion 15, and slides forward while engaging the supporting portions 152 on both sides, whereby the blade receiving portion 40 is pressed relative to the first connecting portion 1600 of the contact portion 160, electrically connected to the first connecting portion 1600, and is mounted on the main body 1 by being locked by the locking claw portion 1530 of the locking portion 153.

[0076] By electrically and mechanically connecting the battery 4 to the first connection portion 1600 of the contact portion 160, the battery 4 and the control unit 3 are electrically connected via the second connection portion 1601 of the contact portion 160, the lead wire 9, and the connected portion 8. Therefore, the battery 4 can supply power to the motor 2.

[0077] If the user operates the setting unit 5, the control unit 3 controls the operation of the motor 2 according to the operation of the setting unit 5. The negative pressure generated by the operation of the motor 2 is used to suck dust from the main body suction port 11 to the dust collecting unit 12, and the dust is collected by the dust collecting unit 12. The air after the dust is separated and captured cools the motor 2 and is discharged from the main body discharge port 13 to the outside of the main body 1.

[0078] According to the above description of the embodiment, the contact portion 160 is formed as a single plate having the first connection portion 1600 that is mechanically and electrically connected to the battery 4 and can be detached and attached, and the second connection portion 1601 that is electrically connected to the connected portion 8, thereby reducing unstable factors in manufacturing and making it possible to stably manufacture the contact portion 160. In addition, since the second connection portion 1601 is formed thinner than the first connection portion 1600, the strength that can withstand repeated detachment or high-frequency detachment of the battery 4 can be ensured by the thickness of the first connection portion 1600. In particular, when the contact portion 160 is formed of copper, which has excellent conductivity but is easily mechanically deformed, the strength can be ensured by making the first connection portion 1600 have a sufficient thickness.

[0079] On the other hand, the thickness of the second connection part 1601 is thinner than that of the first connection part 1600, so a crimping terminal can be used, and it is easy to perform compaction deformation, soldering based on improved thermal conductivity, etc., which can increase the degree of freedom of electrical connection with the connected part 8 and achieve stable electrical connection. In addition, since the contact part 160 is mounted on the mounting part 161, it is possible to suppress the vibration generated by the removal of the battery 4 from being transmitted to the connected part 8.

[0080] The contact portion 160 is formed with a width variation portion 16002 whose width varies in a direction intersecting the thickness direction. The contact portion 160 is positionally restricted relative to the mounting portion 161 by the width variation portion 16002, thereby stably fixing the contact portion 160 relative to the mounting portion 161. The width variation portion 16002 and the mounting portion 161 receiving the width variation portion 16002 can block the impact when the battery 4 is mounted on the first connection portion 1600, and can reduce the transmission of the impact to the second connection portion 1601 and the vibration caused by the impact. In addition, the width variation portion 16002 is formed in the first connection portion 1600 having the largest thickness in the contact portion 160, so the width variation portion 16002 can reliably block the impact when the battery 4 is mounted on the first connection portion 1600.

[0081] By integrally molding the contact portion 160 and the resin mounting portion 161 , the contact portion 160 can be firmly fixed relative to the mounting portion 161 , making it more difficult for the impact and vibration caused by installing the battery 4 on the first connecting portion 1600 to be transmitted to the connected portion 8 .

[0082] The contact portion 160 is in an elongated shape having a longitudinal direction along the mounting direction of the battery 4 , so that the contact portion 160 can stably slide in contact with the blade receiving portion 40 of the battery 4 when the battery 4 is mounted.

[0083] In addition, the second connecting part 1601 is electrically connected to the connected part 8 via the wire 9, so compared with the case where the second connecting part 1601 is directly connected to the connected part 8, the impact when the battery 4 is installed on the first connecting part 1600 and the vibration caused by it are more difficult to be transmitted to the connected part 8.

[0084] Since the mounting portion 161 can be attached to and detached from the opening 155 of the main body 1 where at least a portion of the connected portion 8 is exposed, the connected portion 8 exposed from the opening 155 can be easily accessed by removing the mounting portion 161 from the opening 155. Therefore, the lead wire 9 can be easily replaced by inserting a finger from the opening 155 to remove the lead wire 9 from the connected portion 8.

[0085] In the case of an electric device VC in which at least a portion of the first connection portion 1600 of the contact portion 160 is exposed to the outside of the main body portion 1 and the battery 4 is externally mounted on the main body portion 1, an impact may be applied to the battery 4 from the outside during use. Therefore, the protective effect of the structure of this embodiment on the contact portion 160 and the connected portion 8 can be expected to the greatest extent.

[0086] In addition, since the mounting portion 161 is fixed to the main body 1 from the outside by the fixing body S, if a failure occurs in the contact portion 160, the fixing body S can be removed, and when the wire 9 is connected to the second connecting portion 1601 via the terminal 90, the terminal 90 can be removed, thereby making it possible to easily remove the entire contact assembly portion 16 from the main body 1 and replace it.

[0087] By attaching the contact portion 160 to the mounting portion 161 at a position where the thickness of the contact portion 160 is greater than the thickness of the second connection portion 1601, the heat applied to the second connection portion 1601 when the lead wire 9 is soldered to the second connection portion 1601 is diffused through the thickness of the first connection portion 1600 and is not easily transferred to the mounting portion 161. Therefore, it is possible to suppress the dissolution of the resin mounting portion 161 caused by the heating of the second connection portion 1601 during soldering, and the contact portion 160 can be stably fixed to the mounting portion 161. In particular, when the contact portion 160 is used for high voltage and high current, it is preferable to use a thicker lead wire 9. In this case, when the lead wire 9 is soldered to the second connection portion 1601, the second connection portion 1601 needs to be sufficiently heated. In this case, the resin mounting portion 161 is not easily dissolved due to the heating of the second connecting portion 1601, so the contact portion 160 can be stably fixed to the mounting portion 161, and the second connecting portion 1601 can be fully heated, and poor connection such as so-called soldering failure due to insufficient heating is not easily produced, thereby improving the reliability of the electrical connection in the contact portion 160.

[0088] By arranging the first connection part 1600 of the cathode contact part, i.e., the contact part 160a1, of the battery 4 at a position closer to the rear side of the installation direction of the battery 4 than the first connection part 1600 of the anode contact part, i.e., the contact part 160a2, it is possible to make the cathode side or the ground side contact first when installing the battery 4, so that the electric power can escape to the ground side when the battery 4 is installed, and the electric induction prevention function can be activated as a cordless electric device VC.

[0089] Compared with the power contact part 160a, the voltage applied and the current flowing to the signal contact part 160b are smaller, so even if the second connection part 1601 of the contact part 160b is formed thinner than the second connection part 1601 of the contact part 160a, the reliability of the electrical connection is not easily damaged. In addition, the second connection part 1601 of the contact part 160b can be made thinner, so the contact assembly part 16 can be made more compact and lightweight.

[0090] (Second embodiment)

[0091] Next, refer to Figure 8 The second embodiment will be described. Note that the same reference numerals are used for the same configurations and functions as those of the first embodiment, and description thereof will be omitted.

[0092] In the present embodiment, the contact portion 160 has a narrow portion 1603. The narrow portion 1603 is a portion having a narrow width in a direction intersecting the thickness direction. In the example shown in the figure, the narrow portion 1603 is a portion having a narrow width in the up-down direction. In addition, the narrow portion 1603 is located between the second connection portion 1601 and the mounting portion 161. That is, the narrow portion 1603 is not embedded in the mounting portion 161, but is exposed in front of the mounting portion 161. In the present embodiment, the narrow portion 1603 is formed at the rear end of the second connection portion 1601 and is a portion connected to the middle portion 1602. In the example shown in the figure, the narrow portion 1603 is formed by a recess 1604 obtained by cutting the contact portion 160 in a direction intersecting the thickness direction in connection with the middle width changing portion 16021. In the present embodiment, the recess 1604 is formed at the top and bottom of the contact portion 160. By these recesses 1604, an air layer is formed adjacent to the top and bottom of the narrow portion 1603.

[0093] A narrow portion 1603 having a narrow width in a direction intersecting the thickness direction is formed between the second connection portion 1601 of the contact portion 160 and the mounting portion 161, so that heat applied to the second connection portion 1601 when the lead wire 9 is soldered to the second connection portion 1601 is not easily transferred to the mounting portion 161. Therefore, it is possible to suppress the dissolution of the resin mounting portion 161 due to the heating of the second connection portion 1601 during soldering. In addition, since the narrow portion 1603 is formed by the recess 1604, the air layer formed in the recess 1604 can more reliably suppress the transfer of heat from the second connection portion 1601 to the mounting portion 161.

[0094] In addition, in each embodiment, the battery 4 is not limited to being installed along the front-back direction relative to the main body 1, and can be installed from the top to the bottom relative to the main body 1, for example. In this case, the contact part 160 is an elongated strip having a long side direction along a direction intersecting the installation direction of the battery 4. In the case of such a configuration, the same effects as those of the embodiments can be exerted, that is, the degree of freedom of electrical connection with the connected part 8 can be increased while ensuring the strength that can withstand the removal of the battery 4, and the vibration generated by the removal of the battery 4 can be suppressed from being transmitted to the connected part 8. In addition, when the battery 4 is installed, the distance of sliding contact with the blade receiving part 40 of the battery 4 is short, so it is not easy to apply a large force to the contact part 160, and the deformation of the first connecting part 1600 of the contact part 160 caused by the installation can be more reliably suppressed. Therefore, it is not necessary to make the thickness of the first connecting part 1600 too large, and the contact part 160 can be formed to be more compact or thin.

[0095] Several embodiments of the present invention have been described, but these embodiments are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions and changes can be made without departing from the scope of the invention. These embodiments and their variations are included in the scope and spirit of the invention, and are included in the invention described in the claims and their equivalents.

Claims

1. An electric device, characterized in that: have: A conductive contact portion; a resin mounting portion on which the contact portion is mounted; and The motor is operated by obtaining power from the battery via the contact portion. The contact portion is formed as a straight plate, the plate integrally having a first connection portion mechanically and electrically connected to the battery in a detachable manner, a second connection portion electrically connected to the connected portion via a wire, and an intermediate portion located between the first connection portion and the second connection portion. The thickness of the second connecting portion is thinner than the thickness of the first connecting portion and the middle portion. The contact portion has a width variation portion having a width variation in a first direction intersecting the thickness direction at a position where the first connection portion is connected to the middle portion. The contact portion is positionally restricted relative to the mounting portion in a second direction intersecting the thickness direction and the first direction by the width change portion, and is positionally restricted relative to the mounting portion in the first direction by the intermediate portion, thereby being mounted on the mounting portion at a position with a greater thickness than the second connection portion.

2. The electric device according to claim 1, characterized in that The contact portion and the mounting portion are integrally formed.

3. The electric device according to claim 1 or 2, characterized in that: The contact portion is in a strip shape having a long side direction in the second direction along the mounting direction of the battery.

4. The electric device according to claim 1 or 2, characterized in that: The contact portion is in a strip shape having a longitudinal direction in the second direction along a direction intersecting the mounting direction of the battery.

5. The electric device according to claim 1 or 2, characterized in that: have: A main body portion, accommodating the connected portion; and An opening is formed in the main body to expose at least a portion of the connected portion. The mounting portion is detachably mounted to the opening portion.

6. The electric device according to claim 1 or 2, characterized in that: A main body portion is provided with the mounting portion, At least a portion of the first connection portion of the contact portion is exposed to the outside of the main body portion, and the battery is externally mounted on the main body portion.

7. The electric device according to claim 1 or 2, characterized in that: The contact portion includes a narrow portion having a narrow width in the first direction between the second connection portion and the mounting portion.

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