JP3529034B2 - Small electronic equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small electronic device equipped with a holder for an object to be housed , and more particularly to a small electronic device capable of relieving an external impact at a power supply portion of a power supply battery such as a rechargeable battery and a dry battery. Is.

[0002]

2. Description of the Related Art In recent years, it is well known that various small electronic devices such as a mobile phone, an infrared remote control, a microphone, and a portable headphone stereo device are rapidly spreading. In addition, with the rapid development of IC technology, it becomes possible to further miniaturize the housing itself of a small electronic device of this kind suitable for portable use, whereby various electronic devices are portable electronic devices. It is also well known that it has been introduced to the market as. Therefore, with the development of IC technology, the speeding up of the CPU is changing the life style of the electronic device which has been used only in the home until now in the suburbs.

By the way, as described above, a portable small electronic device (electrical device) needs a power source unit such as a dry battery and a rechargeable battery for driving it, and this power source unit supplies power to a housing and a main circuit. Various measures have been taken for this.
In addition, as a rechargeable battery, the weight is heavier than that of a conventional Ni-Cd battery, but it has a longer life than nickel-hydrogen (Ni-M
H) Batteries and the like have been widely used.

1 to 3 are explanatory views showing a conventional mode for connecting the electrodes of the battery in the battery housing section of the above-mentioned small electronic device and the circuit board, and FIG. 1 is an explanatory view showing the mounting mode thereof. FIG. 2 is an explanatory view of the battery holding portion, and FIG. 3 is a side view showing a mounting state of legs of the battery holding portion. For example, in a remote controller or the like shown in FIG. 1 as an example, a printed circuit board (circuit board) 2 on which various circuit components 1 are mounted
Is housed in a housing 3 made of synthetic resin, and its position is regulated by a guide member 4 in order to prevent its movement inside. The printed circuit board 2 may be additionally fixed to the housing 3 with screws or the like. Then, a conductive plate-like terminal 6 for supplying power from the battery 5 is attached to the printed circuit board 2 while being guided by a pair of terminal holders 7a, 7a. That is, the one end 6a side of the terminal 6 is position-regulated in the terminal holders 7a, 7a provided in the housing 3, and the leg portions 6b1, 6b1 of the fixed end 6b at the other end are fixed to the printed circuit board 2. . This fixing is pattern-bonded by solder S or the like. Therefore, the pole portion of the battery 5 and the terminal 6 can supply power to the printed circuit board 2 via the electrode 8 or the like. It goes without saying that the other electrodes are also held in the same form. The battery 5 thus housed in the housing 3 is held in the housing by closing the upper half body (not shown) of the housing 3 in a state where the lid is fitted.

On the other hand, as another general power feeding method, as shown in FIG. 2, a spring wire is used to feed power from the battery 15 to the printed circuit board 12 on which the circuit component 11 is mounted as described above. It was used. That is, the terminal 16b of one electrode (plus side) is formed by spirally forming a wire material and extending one end in the radial direction toward the printed circuit board 12 side.
The terminal 16a of the other electrode (minus side) is formed in the shape of a coil spring, and its end is similarly extended to the printed circuit board 12 side. And both extension ends 16
b1 and 16a1 are partially bent into a V shape and inserted into the connection holes 12a formed in the printed circuit board 12, connected to the circuit pattern provided on the printed circuit board 12 and fixed with solder S. It is something. FIG. 3 shows an enlarged connection state. Regarding this connection, in order to utilize the elastic force of the V-shaped bent portion, the diameter of the bent portion is made larger than the diameter of the connection hole 12a.

[0006]

By the way, as mentioned above, small portable electronic devices such as a headphone stereo, such as a remote controller and a microphone, are used under severe conditions such as vibration and dropping in handling. There are many. Although such portable electronic devices are portable, they are required to be smaller and lighter, but on the other hand, because they enable continuous use for a long time, the development of power supplies has been overwhelmed, but the device itself is lightweight. Even if it is made into a battery, the weight of the battery tends to increase. For this reason, the impact at the time of dropping is also great, and this impact force gives great damage to the printed circuit board. Therefore, in the case where the printed circuit board (circuit board) 2 and the terminals 6 are joined to each other as shown in FIG. 1, the heavy battery 5 is relatively stably held in the housing portion of the housing 3. However, X1 (Y
When a large impact is repeatedly applied in the (1, Z1) direction, the terminal 6 and the printed circuit board 2 which are elastically supported by an appropriate elastic force via the coil spring 10 are relatively displaced (biased). Occurs. The relative displacement (bias) between the terminal 6 and the printed circuit board 2 may also act in the Y1 and Y1 directions and the Z1 direction orthogonal to the paper surface, and the printed circuit board 2 may even undulate in its longitudinal direction. Such an external force repeatedly acts as a stress on the supporting portion B of the terminal 6 with the terminal holders 7a, 7a of the housing 6, and this force causes metal fatigue to break the terminal 6 at the portion 6c. In the example of FIG. 2 also, this phenomenon causes metal fatigue at the portion shown in FIG. 3 in an enlarged manner, that is, at the bending point 16c, which lowers the reliability of the device.

Even if the battery housed in this way is vertically sandwiched by the housing or lid as described above, the printed circuit boards 2 and 12 on which the components are mounted are firmly sandwiched vertically. However, if the printed circuit boards 2 and 12 are fixed so as to prevent them from moving in all directions, the precision with which they are fitted into the housing 3 must be increased. Because the cost is extremely high,
Such a method cannot be adopted at all. Further, if the printed circuit boards 2 and 12 themselves are fixed to the housing 3 with screws, the cost also increases as the number of parts and the number of processing steps increase.

Therefore, in order to prevent the destruction of the vicinity of the joint portion of the terminal due to the power feeding as described above, a connection method using a flexible conductor wire 23 is considered as shown in FIG. According to this method, compared with the above-mentioned two examples, the power supply by the terminal connection between the printed circuit board 22 and the electrode of the battery 25 can prevent the relative deviation (bias) between the two and can avoid the damage. However, according to this connection method, since the flexible conductor wire 23 and the electrode connection portion of the battery 25 cannot be directly connected to each other, it is necessary to mount them via the lug terminals 26, which requires a mounting man-hour as the number of parts increases. Furthermore, in order to connect the other end of the flexible conductor wire 23 to the printed circuit board 22 by soldering, the flexible conductor wire 23 must have a length that is absolutely necessary for work. For this reason, the extra length portion results in being sandwiched between the housing and the lid when the housing of the device is closed, which leads to damage of the flexible conductor wire 23.
This also results in no improvement.

[0009]

The present invention has been made in order to solve the above problems, and as a first invention, it is formed in a coil shape with a conductive wire material for holding the to-be-housed body 35. An elastic portion 41a, a fixed portion 41d which is continuous with the elastic portion 41a in the radial direction and which is attached to the mounted body 36 and has an elastic shape, and is provided between the fixed portion 41d and the elastic portion 41a. And an annular twisted portion 41c, the annular twisted portion 41c has an annular surface substantially parallel to the surface of the mounted body 36, and its central axis is the mounted body 36. the small electronic apparatus equipped with the container holder 4 1 formed so as to orthogonal to the plane, as the second invention, which is formed in a spiral shape in the wire of electrically conductive to hold the object container 35 spiral The part 42a and the spiral part 4
2a and a fixing portion 42d which is continuous in the radial direction and which is attached to the mounted body 36 and has an elastic shape, and the fixing portion 4d.
2d and the spiral twisted portion 42a, and an annular twisted portion 42c provided between the swirl portion 42a.
It is substantially parallel to the annular surface to the object mounting body 36 side, and its central axis is a small electronic apparatus equipped with the container holder 4 2 formed so as to orthogonal to the mounting body surface As a third invention, an elastic portion 41a formed in a coil shape with a conductive wire material for holding the to-be-housed body 35,
A fixed portion 41d which is continuous with the elastic portion 41a in the radial direction and which is attached to the attached body 36 and has an elastic shape;
It is composed of an annular twisting part 41c provided between the fixed part 41d and the elastic part 41a. The annular twisting part 41c has an annular surface with respect to the surface of the mounted body 36. A first held body holding body 41 formed so as to be substantially parallel and its central axis orthogonal to the surface of the mounted body 36.
And a spiral portion 42a formed in a spiral shape with a conductive wire to hold the storage object 35, and a resilient shape which is continuous with the spiral portion 42a in the radial direction and which is attached to the attachment object 36. It is composed of a fixed portion 42d and an annular twisted portion 42c provided between the fixed portion 42d and the spiral portion 42a, and the annular twisted portion 42c has its annular surface attached to the attachment target. The second stored body holding body 42 formed so as to be substantially parallel to the surface of the body 36 and have its central axis orthogonal to the surface of the body to be mounted 36 is mounted.
It provides small electronic devices arranged so as to face each other.

[0010]

5 (a) and 5 (b) are a plan view and a side view of a microphone device (particularly a wireless microphone) which is an embodiment of a small electronic device of the present invention.
Figure 6 is a schematic plan view of a state in which opening the upper lid of Figure 5, Figure 7,
External perspective view showing the relationship between the print substrate and the battery is to be container, FIG. 8, a battery is a printed board and the housing body
It is a principal part schematic explanatory drawing which shows the relationship of . First, the small
For the first example of the contained body holder to be mounted on the portable electronic device ,
This will be described with reference to FIGS. In FIG. 5, the housing 30 of the microphone device M is molded in a predetermined shape from plastic or the like, and has an upper housing 31 and a lower housing 32.
It is configured by covering and. The lower housing 32 is formed with a battery housing portion 34 for housing a battery 35 serving as a power source. On the other hand, a lid 33 for inserting and removing the battery 35 is attached to a part of the upper housing 31. Then, as shown in FIG. 7, a printed circuit board 36 on which predetermined circuit components 37 are mounted is mounted at a predetermined position of the lower housing 32. 38 is an antenna. This printed circuit board 3
6 is a guide member 39 which is erected at an appropriate location on the lower housing 32.
Alternatively, it is positioned and fixed inside the housing 3 by a side wall or the like. In addition, the lower housing 3 on which the printed circuit board 36 is mounted
2, terminal holders 40a and 40b are formed, one terminal holder 40a is arranged on the minus side, and the other terminal holder 40b is arranged on the plus side.

[0011] Next, detailed per relationship between battery which is the PCB and the container with reference to FIG. Printed circuit board 3
A notch 36a for accommodating the battery 35, which is a power source, is provided in a part of the longitudinal direction 6 of the battery 6. And this notch 3
On one end side of 6a, a terminal 41 which constitutes an object-to- be- accommodated body holder formed in a coil shape by a conductive wire so as to be accommodated in the minus side 40a of the terminal holder,
The other end portion side of the notch 36a, the terminal constituting the object container holder which is formed in a spiral shape of a conductive wire to be accommodated to the positive side in 40b of the terminal holder described above 42
Is attached. One of the terminals 41 has a coil-shaped first elastic portion 41a on the longitudinal axis of the battery 35,
An arm portion 41b that extends in the radial direction continuously from the first elastic portion 41a and a portion that is continuous with the arm portion 41b and is formed between the arm portion 41b and the substrate fixing portion 41d at the end portion. Annular torsion part 41 which is the second elastic part
and c. The annular surface of the twisted portion 41c is substantially parallel to the surface of the printed board 36, and the central axis is an axis orthogonal to the surface of the printed board 36. The center of the coil-shaped terminal 41 and the central axis of the twisted portion 41c are formed so as to be at a distance l1. The board fixing portion 41d at the end has a V shape, and is fixed by soldering with its tip inserted in the hole of the board for the same purpose as the conventional V-shaped bent portion.

The other terminal 42 is formed of a conductive wire in the shape of a spiral, and has a spiral portion 42a, an arm portion 42b extending continuously in the radial direction from the spiral portion 42a, and a continuous arm portion 42b. It is formed by an annular twisted portion 42c formed between the arm portion 42b and the substrate fixing portion 42d at the end portion. The annular surface of the twisted portion 42c is substantially parallel to the surface of the printed board 36, and the central axis is an axis orthogonal to the surface of the printed board 36. The center of the spiral terminal 42 and the central axis of the twisted portion 42c are formed to have a distance l2.
Is set to be substantially the same as the distance l1 of the coil-shaped terminal 41. Further, the board fixing portion 42d at the end portion has a V-shape, and for the same purpose as the conventional V-shaped bending portion, the tip is inserted into the hole of the board and fixed by soldering. In this way, the terminals 41 and 42 are configured, and these are mounted so as to coincide with the longitudinal axis of the battery 35. Therefore, the twisted portion 41c,
42c is also attached in a direction coinciding with the longitudinal axis of the battery 35. The twisted portions 41c, 42
By setting the number of turns of c to be plural, the effect of suppressing the vibration becomes large by the relative displacement of the annular portion by the external force.

Here, when an impact is applied to the housing 30 from the outside, the printed circuit board 36 is unavoidably biased relative to both terminals 41 and 42 of the battery housing portion, but is biased to the bias in the X direction. Is a twisted portion 41c which is a second elastic portion.
Function as a buffer, and with respect to the forces in the Y and Z directions, the coil-shaped first elastic portion 41a and the first elastic portion 41
The arm portion 41b that continuously extends in the radial direction from a and functions to buffer external force from various directions. As a result, no extreme stress acts on the fixed portion of the printed circuit board 36.
The damage of 6 can be avoided. This improves the reliability of the device. In addition, when the terminal 42 of the battery housing portion receives an impact from the outside, the annular twisting portion 42c mainly functions as a buffer against the displacement in the X direction, so that the fixing portion of the printed circuit board 36 is Since the extreme stress does not act, the damage of the printed circuit board 36 can be avoided.
This improves the reliability of the device. The same effect can be obtained by forming the coil-shaped first elastic portion 41a as a plate-shaped terminal and forming a bellows-shaped elastic portion between this and the substrate fixing side.

Here, the small electronic device of the present invention is mounted.
A second example of the held body holder will be described with reference to FIG. This second example effectively functions when the distance between the battery 35 and the printed circuit board 36 in the first example is not sufficient. That is, this second example is suitable when the distance between the battery 35 and the printed circuit board 36 can be relatively secured, and the effect is great. That is, the conductive terminal 51 includes a coil-shaped first elastic portion 51a on the longitudinal axis of the battery 35, and an arm portion 51b continuously extending in the radial direction from the first elastic portion 51a.
And an annular coil portion 51c which is continuous with the arm portion 51b and which is a second elastic portion formed between the arm portion 51b and the substrate fixing portion 51d at the end portion. The annular coil portion 51c has the first elastic portion 5 described above.
It is wound in a direction substantially orthogonal to the axis of 1a. The other side is similar to the above-mentioned configuration and will be omitted.
Then, when an external force is applied to the terminal 51, the annular coil portion 51c can be biased in the radial direction of the coil portion 51c with respect to the force in the X direction in the same manner as in the first example, and the force in the Y direction can be changed. On the other hand, since the coil expands and contracts, the coil 35 and the printed circuit board 3 can be biased.
It also works effectively for large relative deviations with 6. Furthermore, Z
Even with respect to the directional deviation, the relative deviation can be sufficiently suppressed, as is apparent from the physical shape of the coil. Therefore, the small-sized electronic device adopting the above-mentioned structure can maintain a good connection relationship between the terminal and the printed circuit board even against an external impact such as a drop, which leads to an improvement in the reliability of the device.

[0015]

According to the present invention configured as described above ,
Even if the capacity of the battery body increases, the load on the fixed part due to vibration is effectively reduced by the annular twisting part, the annular coil part, etc., and consequently the printed circuit board etc. is prevented from being damaged. since the one in which it is possible to provide a small electronic device that put reliability.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a connection mode between a battery and a circuit board in a conventional small electronic device.

FIG. 2 is an explanatory diagram of a battery holding unit in a conventional small electronic device.

FIG. 3 is a side view showing a state in which the legs of the battery holder are attached.

FIG. 4 is an explanatory diagram showing another connection mode between a battery and a circuit board in a conventional small electronic device.

FIG. 5 is a plan view and a side view of the small electronic device according to the present invention.

6 is a schematic plan view of the lid of FIG. 5 in an open state.

FIG. 7 shows the relationship between the printed circuit board and the battery, which is the container.
It is an appearance perspective view shown .

FIG. 8 shows the relationship between the printed circuit board and the battery, which is the container.
It is a principal part schematic explanatory drawing shown.

[Explanation of symbols]

35 Battery (housed) 36 Attached body (printed circuit board) 41, 42 Storage object holder 41a, coiled elastic portion 41c, 42c annular twisting part 41d, 42d fixed part 42a spiral part 51c annular coil part

Claims (3)

(57) [Claims] 1. An elastic portion formed of a conductive wire in a coil shape for holding an object to be accommodated, and an elastic portion which is continuous with the elastic portion in a radial direction and is attached to an object to be attached. It comprises a fixed part and an annular twisted part provided between the fixed part and the elastic part, and the annular twisted part has its annular surface substantially parallel to the surface of the mounted body. And, and
A small-sized electronic device having a stored body holder formed so that its central axis is orthogonal to the surface of the mounted body. 2. A spiral part formed in a spiral shape by a conductive wire material for holding a container, and a spiral part which is continuous with the spiral part in a radial direction and is attached to a mount object. It comprises a fixed part and an annular twisted part provided between the fixed part and the spiral part, and the annular twisted part has its annular surface substantially parallel to the surface of the mounted body. so,
In addition, a small-sized electronic device is characterized in that a stored-body holder formed so that its central axis is orthogonal to the surface of the mounted body is mounted . 3. An elastic part formed in a coil shape with a conductive wire to hold the object to be housed, and a resilient part which is continuous with the elastic part in the radial direction and which is attached to the object to be housed. The fixed portion and an annular twisted portion provided between the fixed portion and the elastic portion, the annular twisted portion,
In order to hold the to-be-accommodated body, a first to-be-accommodated body holder whose annular surface is substantially parallel to the to-be-attached body surface and whose central axis is orthogonal to the to-be-attached body surface. A spiral part formed of a conductive wire in a spiral shape, a fixed part which is continuous with the spiral part in the radial direction and which is attached to a body to be attached, and which has an elastic shape, and the fixed part and the spiral part. And an annular twisted portion provided between the two, the annular twisted portion of which the annular surface is substantially parallel to the surface of the mounted body, and the central axis of which is the surface of the mounted body. A small electronic device characterized in that a second object holding body formed so as to be orthogonal to is disposed so as to face the surface of the object to be attached.