JP3583888B2 - Portable electrical equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a portable electric device using a battery as a power supply.
[0002]
[Prior art]
2. Description of the Related Art In a portable electric device having a built-in battery, an electrode terminal is brought into contact with ± electrodes of the battery to extract power from the battery. The electrode terminal is connected to a printed circuit board incorporated in the case via a lead wire, and supplies power to an electronic circuit of the printed circuit board. In a portable electric device having this structure, it is important to fix the electrode terminal accurately to a predetermined position of the case in order to make the electrode terminals surely contact the ± electrodes of the battery. Displacement of the position for fixing the electrode terminal causes poor contact with the battery. Further, the printed circuit board needs to be disposed at a fixed position in the case. In order to achieve this, conventional portable electric devices fix electrode terminals and a printed circuit board separately at predetermined positions in a case, and connect the electrode terminals and the printed circuit board with lead wires. Was.
[0003]
[Problems to be solved by the invention]
Since the electrode terminals and the printed circuit board are separately arranged in the case, and the electrical equipment connected by the lead wire is connected to the electrode terminal and the printed circuit board with the lead wire, then both are mounted in the fixed position of the case, There is a disadvantage that the assembly is troublesome. In particular, since the electrode terminals and the printed circuit board are connected with short lead wires, the electrode terminals and the printed circuit board cannot be mounted on the case in a free posture, and there is a drawback that the terminal cannot be easily, easily, and efficiently mounted on the case. . Further, when the electrode terminal and the printed circuit board are mounted in a fixed position on the case, the lead wire is strongly pulled and has a disadvantage that it is easily cut.
[0004]
Furthermore, since the electrode terminal and the printed circuit board are separately fixed to the case, it is necessary to form the electrode terminal and the case into a complicated shape in order to firmly fix the two firmly in a fixed position, resulting in a low component cost. However, there were drawbacks such as an increase in
[0005]
The present invention has been developed for the purpose of eliminating such disadvantages, and has succeeded in eliminating the aforementioned disadvantages by mounting the electrode terminals and the printed circuit board in a case with a unique structure. is there. An important object of the present invention is to provide a portable electric device capable of fixing both an electrode terminal and a printed circuit board simply, easily, and efficiently to a fixed position of a case.
[0006]
[Means for Solving the Problems]
The portable electric device according to claim 1 of the present invention includes: a pair of electrode terminals 17 that are separately in contact with and electrically connected to the ± poles of the battery 4; a printed circuit board 7 that is electrically connected to the electrode terminals 17; And a case in which the printed circuit board 7 is built in, and has the following unique configuration.
(A) The case is composed of a first case 1A and a second case 1B which are separately formed into two parts.
(B) The first case 1A and the second case 1B have a peripheral wall 18, and the peripheral wall 18 is connected to form a closed structure.
(C) The electrode terminals 17 and the printed circuit board 7 are mounted on the first case 1A, and the opening of the first case 1A is closed by the second case 1B.
(D) The electrode terminal 17 is manufactured by bending a metal plate.
(E) The electrode terminal 17 is fitted and fixed to the peripheral wall 18 of the first case 1A.
(F) The electrode terminal 17 includes a contact plate 17A that is in contact with ± electrodes of the battery 4 disposed on the outer surface of the peripheral wall 18 of the first case 1A, and an inner surface of the peripheral wall 18 of the first case 1A. And a connecting piece 17C connected to the printed circuit board 7.
(G) The locking pieces 17B are provided on both sides of the contact plate 17A. The peripheral wall 18 of the first case 1A is sandwiched between the contact plate 17A and the locking pieces 17B, and the electrode terminals 17 are moved in the longitudinal direction. Is fitted to the peripheral wall 18 of the first case 1A so as not to move.
(H) The connecting piece 17C is connected at a right angle to the contact plate 17A, and one end of the connecting piece 17C is connected to the printed circuit board 7.
(I) A fitting groove 19 for fitting the connecting piece 17C of the electrode terminal 17 is provided on the peripheral wall 18 of the first case 1A.
(J) The connecting piece 17C of the electrode terminal 17 is fitted into the fitting groove 19 of the peripheral wall 18, is drawn out into the peripheral wall 18, and is attached to the first case 1A so as not to move the electrode terminal 17 in the lateral direction. are doing.
(K) The printed circuit board 7 is disposed at the fixed position of the first case 1A via the electrode terminals 17 mounted at the fixed position of the first case 1A.
[0007]
In the portable electric device according to the second aspect of the present invention, the electrode terminals 17 prevent the connecting pieces 17C of the printed circuit board 7 from being displaced in the longitudinal direction, and the peripheral wall 18 of the first case 1A prevents the printed circuit board 7 from being displaced. The printed circuit board 7 is disposed at a fixed position of the first case 1A by sandwiching both sides to prevent a lateral displacement of the connecting piece 17C.
[0008]
Further, in the portable electric device according to the third aspect of the present invention, the case is divided into a power supply case 12 containing the battery 4 and a device case 1 detachably connected to the power supply case 12. I have. The printed circuit board 7 and the electrode terminals 17 are mounted on the device case 1.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiments described below exemplify a portable electric device for embodying the technical idea of the present invention, and the present invention does not specify the electric device as follows.
[0010]
Further, in this specification, in order to make it easy to understand the claims, the numbers corresponding to the members shown in the embodiments are referred to as “claims” and “means for solving the problems”. Are added to the members indicated by "." However, the members described in the claims are not limited to the members of the embodiments.
[0011]
The portable electric device shown in FIGS. 1 to 4 is a body hair treatment tool that burns off unwanted hair with the heater 3. However, the present invention does not specify a portable electric device as a hair treatment device. The portable electric device may be any other electric device that uses a battery as a power source, such as an electric razor.
[0012]
The electric device shown in the figure has a power supply case 12 for housing a battery 4 and a device case 1 detachably connected to the power supply case 12. Further, the device case 1 has a heater cassette 11 detachably attached to a tip thereof.
[0013]
The power supply case 12 is formed into an internal cylindrical shape into which two cylindrical batteries 4 can be inserted side by side, and has a closed bottom. In the power supply case 12 shown in the figure, an inner case 12A made of plastic is inserted into an outer case 12B made of aluminum without any gap. A connection terminal 13 for connecting two batteries 4 in series is fixed to the bottom surface of the inner case 12A. Further, the power supply case 12 has a mounting opening 12C at the upper end, into which the insertion portion 1C at the lower end of the device case 1 can be detachably inserted. The mounting opening 12C is provided with an elastic locking piece 14 which is hooked so as not to come off the lower end of the inserted device case 1. This elastic locking piece 14 is provided on a plastic inner case 12A.
[0014]
The elastic locking piece 14 is shown in a front view of the inner case 12A shown in FIG. This figure shows the inner case 12A from which the outer case 12B has been removed. The elastic locking piece 14 shown in this figure is provided with slits 15 on the right side and the lower side, and has a shape obtained by cutting the outer surface so as to be formed thinner than other portions so that it can be elastically deformed. Further, the elastic locking piece 14 has a through hole 14A into which the locking protrusion 16 of the device case 1 is inserted. The through hole 14A is substantially equal to the outer shape of the locking projection 16 so that the locking projection 16 can be inserted almost without a gap, but is slightly larger than this. The inner surface of the elastic locking piece 14 is formed flush with the inner surface of the inner case 12A.
[0015]
The insertion opening 12C is inserted into the insertion portion 1C of the device case 1 in the axial direction, and is slightly rotated to stop. Therefore, as shown in the plan view of FIG. 6, the mounting opening 12C is formed thin at the upper right and lower left so that the insertion opening 1C of the device case 1 can be inserted and slightly rotated. The insertion portion 1C of the device case 1 is axially inserted into the mounting opening 12C in a posture indicated by a chain line. When the device case 1 is rotated in the direction indicated by the arrow in FIG. 6 in the inserted state, the elastic locking pieces 14 are elastically deformed, and the locking projections 16 are guided to the through holes 14A of the elastic locking pieces 14. Is done. In this state, the device case 1 is connected to the power supply case 12 so as not to come off. Although not shown, two elastic locking pieces and locking protrusions are provided at opposing positions to securely connect the device case to the power supply case. When the device case 1 is pulled out from the power supply case 12, the device case 1 is slightly rotated in a direction opposite to the arrow in FIG. When the device case 1 is rotated, the elastic locking pieces 14 are elastically deformed, and the locking projections 16 are pulled out from the through holes 14A of the elastic locking pieces 14 to cancel the hooked state. Therefore, the equipment case 1 is pulled out of the power supply case 12.
[0016]
As shown in the exploded view of FIG. 7, the device case 1 is composed of a first case 1A and a second case 1B which are separately formed into two parts. The first case 1A and the second case 1B are provided with a comb 6 at a tip thereof, and a heater cassette 11 is detachably mounted between the combs 6.
[0017]
The first case 1A and the second case 1B have a peripheral wall 18, and the peripheral wall 18 is connected to form a closed structure. The lower end of the device case 1 in which the first case 1A and the second case 1B are connected is formed into a slightly thin cylindrical shape so that the device case 1 can be inserted into the insertion opening 12C of the power supply case 12 and connected. In order to easily connect the first case 1A and the second case 1B without using screws or the like, a locking hole 18D is formed in the peripheral wall 18 of the first case 1A as shown in FIG. The peripheral wall 18 of the second case 1B is provided with a protrusion 1D that can be inserted into the locking hole 18D. The peripheral wall 18 of the first case 1A is formed high to provide the locking hole 18D, and the peripheral wall 18 of the second case 1B is formed by projecting the protruding portion 1D inserted into the locking hole 18D inward. ing. Two sets of locking holes 18D and protrusions 1D are provided on each of the peripheral walls 18 on both sides, and the first case 1A and the second case 1B are connected by a total of four sets of locking holes 18D and protrusions 1D. ing.
[0018]
The electrode case 17 and the printed circuit board 7 are mounted on the first case 1A, and the opening of the first case 1A is closed by the second case 1B. As shown in FIG. 7, the first case 1A has an electrode terminal 17 fitted and fixed to a peripheral wall 18 at the bottom. The bottom peripheral wall 18 is provided with a fitting groove 19 for drawing out the electrode terminal 17 from the inside to the outside of the peripheral wall 18. As shown in the bottom view of FIG. 9, two fitting grooves 19 are provided for fitting the pair of electrode terminals 17.
[0019]
The peripheral wall 18 of the first case 1A shown in FIG. 9 has a concave portion 20 above the fitting groove 19, and a convex portion 18A inserted into the concave portion 20 is provided on the peripheral wall 18 of the second case 1B. The concave portion 20 and the convex portion 18A provide a gap between which the electrode terminal 17 can be inserted. Further, the first case 1A shown in the figure has a support 18B integrally formed on the inner surface of the recess 20. The column 18B is located on the inner surface of the peripheral wall 18 of the first case 1B, and prevents the first case 1A and the second case 1B from being displaced in the vertical direction. Further, in the second case 1B, a hook 18C is integrally formed between the projections 18A, and the hook 18C is hooked on the inner surface of the peripheral wall 18 of the first case 1A, so that the first case 1A and the second case 1B are hooked. 1B, and prevents vertical displacement.
[0020]
Further, in the first case 1A, a rib 1E is integrally formed on the inner side of the peripheral wall 18 as shown in FIG. The rib 1E is provided with a step for supporting the printed board 7 on a fixed position. In the second case 1B, a rod 1F that supports the rib 1E at a fixed position by pressing the upper surface of the printed board 7 is integrally formed. The printed circuit board 7 is held at a fixed position by being sandwiched between a step portion of the rib 1E of the first case 1A and the rod 1F of the second case 1B.
[0021]
The electrode terminal 17 is manufactured by bending a thin metal plate which can be elastically deformed and having a shape shown in FIG. The electrode terminals 17 that are in contact with the ± electrodes of the battery have the same shape. The electrode terminal 17 in this figure is provided outside the peripheral wall 18 of the first case 1A, and is in contact with the contact plate 17A that is in contact with the ± electrodes of the battery and the contact terminal 17A is provided inside the peripheral wall 18 of the case. It comprises a stop piece 17B and a connecting piece 17C connected to the printed circuit board 7.
[0022]
The locking pieces 17B are disposed on both sides of the contact plate 17A, and sandwich the peripheral wall 18 of the first case 1A between the contact plate 17A and the locking pieces 17B so that the electrode terminals 17 do not move in the longitudinal direction. Thus, it is fitted to the peripheral wall 18 of the first case 1A. The electrode terminal 17 shown in the drawing has an upper half of the contact plate 17A protruding on both sides, and the protruding portion is bent at a right angle to provide a locking piece 17B. The portion between the locking piece 17B and the contact plate 17A is bent at right angles in mutually opposite directions like a Z-shape. The connecting portion between the locking piece 17B and the contact plate 17A is inserted into a gap between the concave portion 20 of the first case 1A and the convex portion 18A of the second case 1B in a state where the electrode terminal 17 is fitted to the peripheral wall 18. .
[0023]
The connecting piece 17C is connected at right angles to the contact plate 17A, and one end of the connecting piece 17C is connected to the printed circuit board 7. As shown in FIG. 10, the connection portion with the printed circuit board 7 is bent at a right angle in a Z-shape, similarly to the locking piece 17B. As shown in FIG. 11, the connecting piece 17C having this shape is inserted into the slit 7A of the printed circuit board 7, and can be fixed at a fixed position on the printed circuit board 7 by soldering the upper surface or the lower surface.
[0024]
The electrode terminal 17 of this shape is indicated by a chain line in FIG. 9 together with mounting the printed circuit board 7 in a fixed position on the first case 1A with the rear end of the connecting piece 17C connected to the printed circuit board 7. As described above, the lower half of the contact plate 17A is positioned outside the peripheral wall 18 of the first case 1A, and the upper half is positioned outside the convex portion 18A of the peripheral wall 18 of the second case 1B. Positioned on both sides of the concave portion 20 inside the peripheral wall 18 of the first case 1A, the connecting pieces 17C are fitted into fitting grooves 19 provided in the peripheral wall 18 of the first case 1A to be in a fixed position of the first case 1A. Will be arranged. Along with the electrode terminals 17 being arranged at fixed positions in the case, the printed circuit board 7 is also arranged at fixed positions inside the case.
[0025]
The printed circuit board 7 has fixed thereto a contact 21 for the switch 5 for heating by energizing the heater 3 and an electronic circuit component constituting a timer for limiting the heating time of the heater 3.
[0026]
The heater cassette 11 has a heater 3 built in a plastic heater case 2. The heater cassette 11 has both ends knobs 11A at both ends so that the both ends can be grasped and detached in a direction orthogonal to the heater 3. Both end knobs 11A are exposed to the outside from between the combs 6 in a state where the heater cassette 11 is mounted on the main body. In the heater cassette 11 shown in the figure, four rows of ridges 11C are formed on the surface of the both-end knob 11A in order to prevent slippage when attaching and detaching. When the heater cassette 11 is inserted between the combs 6 and mounted on the equipment case 1, the heater terminals 10 are electrically connected to the connection terminals 8 fixed to the printed circuit board 7 so that the heater 3 can be energized. It becomes.
[0027]
In the embodiment described above, parts for burning off unwanted hair with a heater are incorporated in the equipment case. In the device case, for example, a part for an electric razor having the same shape of the insertion portion may be incorporated.
[0028]
【The invention's effect】
In the portable electric device of the present invention, the electrode terminals and the printed circuit board are mounted on the case with a unique structure, and both the electrode terminals and the printed circuit board can be easily, easily, and efficiently placed in the fixed position of the case accurately. There is a feature that can be fixed. In particular, in the electric device of the present invention, the printed circuit board is mounted in a fixed position of the case via the electrode terminal formed by bending the metal plate. There is also a feature that these can be absorbed by the deformation and can be accurately mounted in a fixed position.
[0029]
Further, the portable electric device according to claim 2 of the present invention is provided with a concave portion and a convex portion inserted into the concave portion on the peripheral wall of the first case and the second case, and the convex portion is formed in the concave portion. The contact plate of the electrode terminal is arranged outside the part to be inserted, and the electrode terminal is inserted into the gap between the concave portion and the convex portion, so that the contact plate is securely supported on the peripheral wall and the electrode terminal is There is a feature that it can be more reliably arranged in a fixed position.
[0030]
Still further, in the portable electric device according to claim 3 of the present invention, the case is separated into a power supply case and a device case detachably attached to the power supply case, and the printed circuit board is built in the device case. Since the electrode terminals are fixed to the peripheral wall, device cases having various functions can be detachably connected to a single power supply case so that they can be conveniently used for various purposes.
[Brief description of the drawings]
FIG. 1 is a front view of a portable electric device according to an embodiment of the present invention. FIG. 2 is a side view of the portable electric device shown in FIG. 1. FIG. 3 is a plan view of the portable electric device shown in FIG. FIG. 4 is a front view showing a state in which a device case of the portable electric device shown in FIG. 1 is opened. FIG. 5 is a front view of an inner case of the portable electric device according to the embodiment of the present invention. FIG. 7 is a plan view of a power supply case of the portable electric device according to the embodiment of the present invention. FIG. 7 is an exploded front view of the device case of the portable electric device shown in FIG. 1. FIG. FIG. 9 is an exploded bottom view of the device case of the portable electric device shown in FIG. 1; FIG. 10 is a perspective view of an electrode terminal of the portable electric device according to the embodiment of the present invention; FIG. 11 is an enlarged sectional view showing a connection portion between an electrode terminal and a printed circuit board.
DESCRIPTION OF SYMBOLS 1 ... Device case 1A ... 1st case 1B ... 2nd case 1C ... Insert part 1D ... Projection part 1E ... Rib 1F ... Rod 2 ... Heater case 3 ... Heater 4 ... Battery 5 ... Switch 6 ... Comb 7 ... Printed circuit board 7A ... slit 8 ... connection terminal 10 ... heater terminal 11 ... heater cassette 11A ... both ends knob 11C ... convex strip 12 ... power supply case 12A ... inner case 12B ... outer case 12C ... mounting opening 13 ... connection terminal 14 ... elastic locking piece 14A ... through-hole 15 ... slit 16 ... locking projection 17 ... electrode terminal 17A ... contact plate 17B ... locking piece 17C ... connecting piece 18 ... peripheral wall 18A ... convex part 18B ... support 18C ... hook 18D ... locking hole 19 ... fitting. Groove 20 ... recess 21 ... contact

Claims (3)

A pair of electrode terminals (17) that are separately in contact with and electrically connected to the ± poles of the battery (4), a printed circuit board (7) that is electrically connected to the electrode terminals (17), and a printed circuit board (7). A portable electric device comprising: a housing for housing therein; and all of the following configurations.
(A) The case is composed of a first case (1A) and a second case (1B), which are separately formed into two parts.
(B) The first case (1A) and the second case (1B) have a peripheral wall (18), and the peripheral wall (18) is connected to form a closed structure.
(C) The electrode terminals (17) and the printed circuit board (7) are mounted on the first case (1A), and the opening of the first case (1A) is closed by the second case (1B).
(D) The electrode terminal (17) is manufactured by bending a metal plate.
(E) The electrode terminal (17) is fitted and fixed to the peripheral wall (18) of the first case (1A).
(F) The electrode terminal (17) comprises: a contact plate (17A) which is in contact with ± electrodes of the battery (4) disposed on the outer surface of the peripheral wall (18) of the first case (1A); The first case (1A) includes a locking piece (17B) disposed on the inner surface of the peripheral wall (18) of the case (1A) and a connecting piece (17C) connected to the printed circuit board (7).
(G) The locking pieces (17B) are provided on both sides of the contact plate (17A), and the peripheral wall (18) of the first case (1A) is formed by the contact plate (17A) and the locking pieces (17B). And the electrode terminal (17) is fitted to the peripheral wall (18) of the first case (1A) so as not to move in the longitudinal direction.
(H) The connecting piece (17C) is connected at right angles to the contact plate (17A), and the connecting piece (17C) has one end connected to the printed circuit board (7).
(I) On the peripheral wall (18) of the first case (1A), a fitting groove (19) for fitting the connecting piece (17C) of the electrode terminal (17) is provided.
(J) The connecting piece (17C) of the electrode terminal (17) is fitted into the fitting groove (19) of the peripheral wall (18) and drawn out into the peripheral wall (18), and the electrode terminal (17) is moved in the lateral direction. Is attached to the first case (1A) so as not to move.
(K) The printed circuit board (7) is disposed at the fixed position of the first case (1A) via the electrode terminal (17) mounted at the fixed position of the first case (1A). A concave portion (20) is provided on a peripheral wall (18) of the first case (1A), and a convex portion (18A) inserted into the concave portion (20) is provided on a peripheral wall (18) of the second case (1B). The contact plate (17A) of the electrode terminal (17) is provided outside the peripheral wall portion for inserting the convex portion (18A) into the concave portion (20). A connecting portion for connecting the contact plate (17A) of the electrode terminal (17) and the locking piece (17B) is inserted into the gap of (18A), and the electrode terminal (17) is disposed at a fixed position of the case. The portable electric device according to claim 1, comprising: The case is divided into a power supply case (12) containing a battery (4) and a device case (1) detachably connected to the power supply case (12). The printed circuit board (7) and the electrode terminals ( The portable electric device according to claim 1, wherein the device (17) is mounted on the device case (1).

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