JPH0529548U - Power supply structure for low frequency treatment device - Google Patents

Abstract

(57) [Abstract] [Purpose] A structure that can stabilize the system circuit by automatically discharging the residual charge in the circuit when the battery is removed can be made lightweight, compact, and inexpensive. To provide a power supply structure for a frequency therapy device. [Structure] One of the electrode terminals in contact with the positive and negative electrodes of the battery 6 is composed of a plate having elasticity, and one of the electrode terminals is pressed against the connecting conductor portion of the other electrode terminal when the battery 6 is removed. It is characterized by doing so.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a power supply structure of a low frequency treatment device, and more particularly to a power supply structure of a low frequency treatment device using a removable battery as a driving power supply.

[0002]

[Prior Art]

 Recently, a compact low-frequency treatment device has been developed that is made smaller and lighter, and an adhesive pad is directly attached to the body of the low-frequency treatment device, and the treatment is applied to the living body (actually 63-188 042, 62). ─ 38670). In such a treatment device, a microcomputer in which a circuit portion is integrated is being developed. Many of those using a microcomputer employ an OFF mode in which the microcomputer operation is stopped even when a small current is applied even when the switch is OFF.

Conventionally, in the case of a low frequency treatment device using a microcomputer, a time constant circuit of a capacitor C and a resistor R is provided to a reset terminal of a microcomputer M as shown in FIG. 5 in order to initialize the microcomputer when the power is turned on. Was installed in.

[0004]

[Problems to be solved by the device]

 However, this conventional method can be properly initialized when the initial power is turned on (when the battery is inserted), but when the used battery is removed to replace the battery, the time constant circuit gradually increases the time. A new battery is inserted when the system discharges and the system is unstable below the ON voltage of the microcomputer itself, and initialization of the microcomputer M does not work well, causing system runaway. This is a serious problem, especially for devices such as low-frequency therapy devices that actually pass an electric current through the body.

As a measure to prevent the above-mentioned problem, the power supply voltage is detected by a circuit configuration using a Zener diode D as shown in FIG. 6 or a configuration using a voltage detection IC circuit K as shown in FIG. Although it is possible to stabilize the circuit system by using such a configuration, the problem of using such a configuration is to increase the number of circuit components, which leads to higher costs, and to go against the needs for lightweight and small size. is there.

The present invention is proposed in view of the above problems, and the purpose thereof is to automatically discharge the residual charge in the circuit when the battery is removed, thereby stabilizing the system circuit when the battery is inserted next time. In view of the above, it is an object of the present invention to provide a power supply structure for a low-frequency treatment device that can reduce the cost, weight, and size of a configuration that can effectively use the initializing of a mylocomputer.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a power supply structure for a low-frequency treatment device that uses a battery that can be inserted into and removed from the treatment device body as a driving power source, and contacts the positive and negative electrodes of the battery when the battery is inserted into the treatment device body One of the two electrode terminals shall be composed of a plate with elastic force, and when the battery is removed, this electrode terminal should be pressed against the connecting conductor part of the other electrode terminal by its elastic force. It is characterized by.

[0008]

[Action]

 With the above structure, since one electrode terminal is made of a plate body having elastic force, when the battery is inserted, the one electrode terminal is pressed by one polar surface of the battery to elastically deform and the other electrode terminal is pressed. While separating from the connecting conductor part of the terminal and functioning as only one power source electrode, when the battery is removed, the pressing force of the battery against the one electrode terminal is released so that the one electrode terminal The elastic deformation of the electrode restores the urging force, and this urging force presses the one electrode terminal against the connecting conductor part of the other electrode terminal to close the two electrode terminals and automatically remove the residual charge in the circuit. Can be discharged.

[0009]

【Example】

 A power supply structure of a low frequency treatment device according to the present invention will be described based on an embodiment of the drawings. FIG. 1 is an external plan view of the low frequency treatment device, and FIG. 2 is a side view thereof. The low frequency treatment device (hereinafter, simply referred to as a treatment device) includes a main body 1 composed of an upper case 1a and a lower case b, a power switch 2 and a mode changeover switch 3, and is directly attached to a lower surface of the lower case 1b. Adhesive pads 4 and 5 to be attached to the living body are provided.

The power supply structure of the present invention is provided inside the treatment device main body 1 constructed as described above. As shown in FIG. 4, the power source structure is such that a battery insertion opening 7 for inserting and removing a battery 6 is opened in one side wall of the upper case 1a of the main body 1, and the inside of the lower case 1b is provided in an upper surface portion of the lower case 1b. A printed wiring board 8 having a shape substantially similar to the peripheral wall as shown in FIG. 3 is provided.

The printed wiring board 8 is made of a plate material of an insulating material, and a rectangular window hole 8a is provided at a position substantially at the center of the inserted battery 6. A positive electrode terminal 9 that contacts the positive electrode side 6a of the battery 6 is provided on the upper surface of the printed wiring board 8 on one side of the window hole 8a, and the lower surface of the printed wiring board 8 at the position of the positive electrode terminal 9 is provided. A positive electrode pattern 10 electrically connected to the positive electrode terminal 9 is formed.

On the other hand, a negative electrode pattern 11 is formed on the lower surface of the printed wiring board 8 on the other side of the window hole 8 a, that is, on the opposite side of the positive electrode terminal 9, and the negative electrode pattern 11 has a negative electrode surface of the battery 6. A negative electrode terminal 12 that contacts 6b is provided. As shown in FIG. 4, the negative electrode terminal 12 is composed of a plate body having an elastic force, which is bent in a dogleg shape having a leg portion 12a in a side view, and the leg portion 12a is formed on the negative electrode pattern 11 as shown in FIG. When the battery 6 is absent, the apex 12b of the bent portion projects from the window 8a to the outside of the upper surface of the printed wiring board 8, and the free end 12c of the bent portion 12c contacts the positive electrode pattern 10 in a pressure contact manner. The positive electrode pattern 10 and the negative electrode pattern 11 are closed, and at the time of inserting the battery 6, the apex 12b of the bent portion is pressed by the negative electrode surface 6b of the battery 6 so that the free end 12c is moved to the positive electrode pattern 10a. And the positive electrode pattern 10 and the negative electrode pattern 11 are opened so that both electrodes of the battery 6 are individually connected to the terminals 9 and 12, respectively.

Further, on the lower surface of the lower case 1b of the main body 1, there are provided adhesive pad adhering electrodes 4a, 5a electrically connected to an output portion (not shown). Adhesive pads 4 and 5 that are directly attached to the living body are attached to 5a. Next, the operation of the embodiment configured as described above will be described. In the treatment device of the above-described embodiment, the power switch 2 is turned on, the mode switching switch 3 is set to a desired mode, and the adhesive pads 4 and 5 are attached to the affected area of the living body for treatment as shown in FIG. ..

By the way, when the power supply battery 6 is exhausted due to long-term use or the like, it is replaced with a new battery 6. In this case, by removing the consumed battery 6 from the battery insertion port 7 of the main body 1 in the direction of the arrow, the pressing force on the bent portion vertex 12b of the negative electrode terminal 12 pressed by the negative electrode surface 6b of the battery 6 is increased. It will be canceled.

Then, the negative electrode terminal 12 is elastically biased by a restoring force, and the biasing force allows the apex 12 b to freely project upward from the window hole 8 a of the printed wiring board 8 and the free end 12 c thereof faces. It is pressed against the positive electrode pattern 10 of the printed wiring board 8. By this pressure contact, the positive electrode pattern 10 and the negative electrode pattern 11 are short-circuited at the negative electrode terminal 12 to close between the both polar terminals 9 and 11, and in the circuit for conducting electricity through the both polar terminals 9 and 11. Instantly discharge the residual charge.

Therefore, even if a new battery 6 is inserted, the initial charge of the microcomputer is not hindered by the residual charge, and the initial rise of the microcomputer can be satisfactorily operated, thus stabilizing the circuit. Therefore, it is possible to reliably prevent troubles due to system runaway.

[0017]

As described above, according to the present invention, since one of the two electrode terminals that come into contact with the battery is formed of a plate body having an elastic force, one of the electrode terminals can be removed when the battery is removed. Automatically presses the connecting conductor of the other electrode terminal to close the gap between the two terminals to instantly discharge the residual charge in the circuit, so the initializing of the microcomputer when inserting a new battery It can be performed reliably, the circuit can be stabilized, troubles due to system runaway can be reliably prevented, the treatment device can be safely used in the living body, and the structure is extremely simple The number of points can be reduced and the weight and size reduction can be promoted, but the production cost can be greatly reduced by that much.

[Brief description of drawings]

FIG. 1 is an external plan view of a low frequency treatment device according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a perspective view showing a main part.

FIG. 4 is an enlarged sectional view of a main part.

FIG. 5 is an electric circuit diagram in a conventional example.

FIG. 6 is an electric circuit diagram using a Zener diode as a conventional example.

FIG. 7 is an electric circuit diagram using a voltage detection IC circuit as a conventional example.

FIG. 8 is a reference diagram showing a state in which the treatment device is used in a living body.

[Explanation of symbols]

 1 treatment device body 6 battery

Claims (1)

[Scope of utility model registration request] 1. A power supply structure for a low-frequency treatment device using a battery that can be inserted into and removed from the treatment device main body as a drive power source, and two electrodes that contact the positive and negative electrodes of the battery when the battery is inserted into the treatment device main body. One of the terminals is configured by a plate body having an elastic force, and when the battery is removed, the electrode terminal is configured to be pressed against the connection conductor portion of the other electrode terminal by the elastic force. Power supply structure for low frequency treatment device.