Battery adapter

Abstract

To provide a battery adapter capable of preventing, even if the other battery that is not a dedicated battery of an electrically-driven device is mounted, damages of the electrically-driven device and the other battery.SOLUTION: A battery adapter 300 for mounting the other battery having a shape that cannot be directly mounted to a battery mounting part of an electrically-driven spray device to the battery mounting part comprises: a main body part 310; a battery terminal 320 that is electrically connected to the battery electrode distributed to the other battery; a facing electrode that is electrically connected to a device side electrode distributed to the electrically-driven spray device; an inter-electrode wiring part 340 that electrically connects the battery terminal 320 to the facing electrode; and a fuse 360 that can be attached to and detached from the main body part 310, and is distributed at a position on the battery terminal 320 side relative to the position of the facing electrode in the inter-electrode wiring part 340.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a battery adapter, and more particularly to a battery adapter for electrically powered devices. [Background technology]

[0002] There is known a battery adapter that enables an electrically-driven device to be used by attaching it to a battery other than a dedicated battery for the electrically-driven device. As such a battery adapter, a configuration such as that described in Patent Document 1 (Registered Utility Model No. 3028501) is known. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Registered Utility Model No. 3028501 (Claim 1, Claim 2, Figure 1, Figure 2, etc.) Summary of the Invention [Problem to be solved by the invention]

[0004] The battery adapter disclosed in Patent Document 1 only discloses a configuration for enabling an electric device to use a battery other than a dedicated battery. Therefore, there is a problem that if excessive current is applied from the other battery to the electric device, the electric device or the other battery may be damaged. [Means for solving the problem]

[0005] The present invention is intended to solve the above problems and has the following objective: To provide a battery adapter that can prevent damage to an electrically-driven device or other batteries even when a battery other than a dedicated battery for the electrically-driven device is attached.

[0006] As a result of intensive research by the inventors to solve the above problems, the inventors have come up with the following configuration: That is, the present invention is a battery adapter that is attached to another battery having a shape that cannot be directly attached to a battery attachment part arranged in an electrically-driven device, and allows the other battery to be attached to the battery attachment part, the battery adapter comprising: a main body, a first electrode arranged in the main body and electrically connected to a battery electrode arranged in the other battery, a second electrode arranged in the main body and electrically connected to an appliance-side electrode arranged in the electrically-driven device, an inter-electrode wiring part that electrically connects the first electrode and the second electrode, and a fuse that is detachable from the main body and is arranged in the inter-electrode wiring part at a position closer to the first electrode than the position of the second electrode.

[0007] This makes it possible to prevent damage to the electric device or other batteries even if an excessive current is applied to the electric device by attaching a battery other than the dedicated battery for the electric device. Also, if the fuse blows, it can be easily replaced, greatly improving maintainability. Effect of the Invention

[0008] According to the configuration of the present invention, even if a battery other than a dedicated battery for an electrically-driven device is attached and excessive current is applied to the electrically-driven device, damage to the electrically-driven device and the other battery can be prevented. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a perspective view of the electric sprayer, another battery, and a battery adapter according to the embodiment. [Diagram 2] 1 is a perspective view showing the structure of a battery with a battery adapter attached and the main parts of a battery storage section of an electric sprayer. FIG. [Diagram 3] FIG. 2 is a rear perspective view showing a state in which the battery adapter is attached to the other battery. [Figure 4] FIG. 2 is an exploded perspective view of the battery adapter. [Diagram 5]FIG. 4 is a configuration diagram showing the wiring between a battery, a battery adapter, and a battery storage section. [Figure 6] 11 is a perspective view showing a state in which a battery adapter is attached to another battery in a battery storage section. FIG. [Figure 7] 11 is a cross-sectional view of a main portion of the battery storage section when a battery with a battery adapter attached is stored in the battery storage section. FIG. [Figure 8] 13 is a partially see-through plan view showing a state in which a battery with a battery adapter attached is stored in the battery storage section. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] In this embodiment, a battery adapter 300 that can be attached to another battery 200 that cannot be directly attached to the electric sprayer 100 as an electric device shown in Fig. 1 will be described. Note that the battery adapter 300 according to the present invention is not limited to being attached to the other battery 200 for driving the electric sprayer 100.

[0011] The electric sprayer 100 in this embodiment has a liquid medicine tank 110 that contains the liquid medicine, and a case section 120 attached to the underside of the liquid medicine tank 110. The case section 120 houses a pump for spraying the liquid medicine in the liquid medicine tank 110, a pump operation control board, and the like (none of which are shown in the figures). In addition, although not shown in the figures, a spray nozzle is connected to the pump. An opening / closing door 130 is attached to the side of the case section 120. A battery mounting section 140 is provided inside the opening / closing door 130.

[0012] As shown in FIG. 1 and FIG. 2, the battery holder 150 is disposed in the battery mounting section 140. The battery holder 150 in this embodiment has a protrusion 152 extending from the opening side of the battery mounting section 140 to the rear side, and a battery holding lever 154 disposed in the opening of the battery mounting section 140 so as to be movable up and down. The protrusions 152 are erected from the left and right upright walls of the battery mounting section 140 so as to face each other on the inner side in the width direction. The battery holding lever 154 is accommodated in a groove 155A extending in the up and down direction of the holding lever mounting section 155 in a state in which a downward biasing force is applied by a spring 157 held by a spring holding member 156 fixed to the holding lever mounting section 155. The battery holding lever 154 accommodated in this manner is capable of sliding up and down along the groove 155A in a state in which a downward biasing force by the spring 157 is applied.

[0013] Further, at the back side of the battery mounting section 140, an appliance side electrode 160 electrically connected to the pump, the operation control board, etc. is disposed. In this embodiment, as shown in FIG. 2, the appliance side electrode 160 is disposed in a state where two electrode units 164 each having a cylindrical power passive contact 162 and a signal passive contact 163 are arranged side by side in the horizontal direction. The electrode unit 164 has a positive electrode unit 164A and a negative electrode unit 164B. If the battery is a shape-compatible battery (not shown), such as a genuine battery or a compatible battery for the electric sprayer 100, the shape-compatible battery is reliably held in the battery holder 150 simply by storing it in the battery mounting section 140, and the appliance side electrode 160 and the electrode (not shown) of the shape-compatible battery can be electrically connected.

[0014] The other battery 200 shown in Figs. 1 to 3 has a different shape from the shape-matching battery of the electric sprayer 100, and the position of the battery electrode 210 is also different from that of the shape-matching battery. For this reason, even if the other battery 200 can be housed in the battery mounting section 140 as is, it is not possible to hold the other battery 200 in the battery holder 150 or electrically connect the device side electrode 160 and the battery electrode 210 (see Fig. 8). Therefore, when the other battery 200 is housed in the battery mounting section 140, a battery adapter 300 is used to hold the other battery 200 in the battery mounting section 140 and electrically connect the device side electrode 160 and the battery electrode 210 of the other battery 200.

[0015] FIG. 4 is a perspective view showing the battery adapter 300 in this embodiment in an exploded state. The battery adapter 300 in this embodiment includes a main body 310, a battery terminal 320 as a first electrode, a connection board 330, an interelectrode wiring part 340, and a fuse box 350. A fuse 360 ​​is detachably attached to the fuse box 350. The main body 310 is divided into a first main body 310A and a second main body 310B. The first main body 310A and the second main body 310B are assembled together by a screw 370 with the battery terminal 320 and the connection board 330, which are electrically connected by the interelectrode wiring part 340, sandwiched between them. In addition, the upper corner of the main body 310 on the side where it is inserted into the battery mounting part 140 is formed into an inclined surface part 312. In addition, a holding rail 316 for holding the main body 310 on the battery holder 150 is formed on the side of the main body 310.

[0016] The other battery 200 with the battery adapter 300 attached is accommodated in the battery mounting section 140 by pushing the other battery 200 into the back of the battery mounting section 140 with the holding rail 316 placed on the protrusion 152. When the other battery 200 is pushed into the battery mounting section 140, the battery holding lever 154 is pushed up along the inclined surface section 312 of the battery adapter 300 against the biasing force of the spring 157. When the other battery 200 is pushed into the back of the battery mounting section 140, the top surface 314 of the battery adapter 300 slides against the battery holding lever 154, and the other battery 200 is accommodated in the back of the battery mounting section 140. When the other battery 200 is accommodated in a predetermined position in the battery mounting section 140, the battery holding lever 154 is lowered along the front standing section 390 of the battery adapter 300 by the biasing force of the spring 157 (see Figs. 6 and 7). In this manner, the battery holding lever 154 serves as a stopper for the front standing portion 390 (the other battery 200 to which the battery adapter 300 is attached), preventing the other battery 200 from falling off the battery attachment portion 140.

[0017] As shown in Figs. 7 and 8, the battery terminal 320 is electrically connected to each of the battery electrodes 210 of the other battery 200, and is electrically connected to the interelectrode wiring section 340 at the wiring connection section 322. Also, as shown in Figs. 3 and 5, the connection board 330 is provided with four facing electrodes 332 as second electrodes arranged to face each of the device-side electrodes 160. Also, a fuse box 350 is provided in the interelectrode wiring section 340 (on the path of the interelectrode wiring section 340 connected to the positive power passive contact 162) that electrically connects the battery terminal 320 as the first electrode and the facing electrode 332 as the second electrode. The fuse box 350 in this embodiment is provided on the path of the interelectrode wiring section 340 connected to the positive power passive contact 162, at a position closer to the battery terminal 320 than the position of the facing electrode 332. Therefore, power from the battery electrode 210 is supplied to the device side electrode 160 via the battery terminal 320, the inter-electrode wiring portion 340, the fuse box 350 (fuse 360), and the connection board 330 (facing electrode 332).

[0018] In this way, by electrically connecting the other battery 200 and the electric sprayer 100 via the battery adapter 300, power output and signal transmission between the other battery 200 and the operation control unit 190 of the electric sprayer 100 can be performed in the same way as with a shape-compatible battery. Therefore, by using the battery adapter 300 in this embodiment, the operation control unit 190 of the electric sprayer 100 according to the state of the other battery 200 can be performed in the same way as with a shape-compatible battery.

[0019] The allowable current (first allowable current) of the fuse 360 ​​in this embodiment is preferably equal to or less than the trigger current (second allowable current) when the circuit protection function realized by the operation control unit 190 of the control board built in the electric sprayer 100 operates. In addition, since the fuse 360 ​​is disposed at an upstream position (position on the battery terminal 320 side) from the downstream end position (facing electrode 332) of the interelectrode wiring part 340, it is possible to prevent an unintended excessive current from flowing from the other battery 200 to the electric sprayer 100. Even if a short circuit occurs in the facing electrode 332, the fuse 360 ​​blows, thereby preventing damage to the other battery 200. Furthermore, even if the fuse 360 ​​needs to be replaced, the fuse 360 ​​is detachable from the outer surface of the main body part 310 of the battery adapter 300, so that replacement is easy and maintenance is good.

[0020] As described above, the other battery 200 to which the battery adapter 300 in this embodiment is attached can be attached in a state in which it is prevented from coming off (fixed) in the battery mounting section 140 of the electric sprayer 100. Therefore, if the output performance of the other battery 200 already owned by the user of the electric sprayer 100 is suitable for the electric sprayer 100 and it can be accommodated in the battery mounting section 140, it can be used with the electric sprayer 100, which is economical.

[0021] In the above embodiment, an electric sprayer 100 is used as an example of an electric device, but the electric device is not limited to the electric sprayer 100, and the present invention can also be applied to other known electric devices such as electric drivers.

[0022] In addition, in the above embodiment, the device side electrode 160 is exemplified as having a form having a power passive contact 162 and a signal passive contact 163, but if the battery electrode 210 does not have electrodes corresponding to the power passive contact 162 and the signal passive contact 163, the configurations of the power passive contact 162 and the signal passive contact 163 can be omitted.

[0023] In the above embodiment, the battery holder 150 has the protrusion 152 and the battery holding lever 154, and the battery holder 150 has the holding rail 316 formed thereon as an attachment portion, but the present invention is not limited to the above embodiment. The specific form of the battery holder 150 and the specific form of the attachment portion to the battery holder 150 are not particularly limited.

[0024] In addition to the modified examples described above, it is also possible to adopt a form in which the modified examples described in the embodiment are appropriately combined. [Explanation of symbols]

[0025] 100: Electric sprayer 110: Chemical tank 120: Case part 130: Opening and closing door 140: Battery mounting section 150: battery holder, 152: protrusion, 154: battery holder lever, 155: Retaining lever mounting portion, 155A: Groove portion, 156: Spring retaining member, 157: Spring 160: Equipment side electrode 162: Passive contact for power, 163: Passive contact for signal, 164: Electrode unit, 164A: Positive electrode unit, 164B: Negative electrode unit 190: Motion control unit 200: Other battery 210: Battery electrode 300: Battery adapter 310: Main body part, 310A: First main body part, 310B: Second main body part, 312: Inclined surface part, 314: Top surface, 316: Retaining rail 320: Battery terminal (first electrode) 322: Wiring connection part 330: Connection board 332: Opposing electrode (second electrode) 340: Inter-electrode wiring section 350: Fuse box 360: Fuse 370: Screw 390:Front standing part

Claims

[Claim 1] A battery adapter that is attached to another battery having a shape that cannot be directly attached to a battery attachment portion disposed in an electrically-driven device, and allows the other battery to be attached to the battery attachment portion, A main body portion, a first electrode disposed on the main body and electrically connected to a battery electrode disposed on the other battery; a second electrode disposed on the main body and electrically connected to a device-side electrode disposed on the electrically-driven device; an interelectrode wiring portion that electrically connects the first electrode and the second electrode; a fuse that is detachable from the main body and is disposed in the interelectrode wiring portion at a position closer to the first electrode than the position of the second electrode.

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