JPH08298386A - Waterproof electronic apparatus - Google Patents

Abstract

PURPOSE: To provide a waterproof electronic apparatus in which the production cost of a packing, being placed at the abutting part of housing body and housing cover, can be reduced while facilitating the fixing work of packing. CONSTITUTION: A packing part 132 being placed at the abutting part of housing body 110 and housing cover 120 is integrated with a rubber switch part 131 and constitutes a part of a rubber switch 130 with packing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of portable electronic equipment which requires waterproofing, such as a portable telephone or a cordless telephone handset.

[0002]

2. Description of the Related Art FIGS. 8 to 10 show conventional waterproof electronic devices such as mobile phones. As shown in FIG. 8, the housing of this electronic device is composed of a housing body 10 and a housing cover 20, and its assembly is carried out by housing a button portion 31 of a rubber switch 30 as shown in FIG. The rubber switch 30 is positioned at a predetermined position in the housing body 10 by inserting it into the through hole 11 formed in the body body 10, and then the circuit board 40 on which various circuit parts are formed is placed on the rubber switch 30. Then, the rubber switch 30 and the rubber switch 30 are fixed to the housing body 10 with screws 41. Ring-shaped packing 50 as shown in FIG.
Then, the housing cover 20 is fixed to the housing body 10 with the screw 23 with the end surface 21 of the housing cover 20 aligned with the end surface of the housing body 10.

Thus, the intrusion of water droplets from the through hole 11 of the housing body 10 is blocked by the board portion 32 of the rubber switch 30 pressed against the rib 15 formed on the inner wall surface of the housing body 10, and The ingress of water droplets from the joint portion of the main body 10 and the housing cover 20 is blocked by the packing 50 sandwiched between the two, and the infiltration of water droplets from the insertion hole 24 of the screw 23 is blocked by the packing 25. To be done.

However, according to this conventional waterproof type electronic device, it is necessary to form a mold in order to manufacture the packing 50 having a size and a shape which can be fitted into the groove portion 13 formed in the housing body 10. There was a problem that it was bulky. Further, it is difficult to fit the packing 50 into the groove portion 13 while preventing the linear packing 50 having a length capable of surrounding the inside of the housing body 10 from being twisted. There was also a problem that it took man-hours.

[0005]

As described above, in the above-mentioned waterproof electronic device, the manufacturing cost of the packing interposed in the joint portion between the housing body and the housing cover becomes high, and the large-sized packing itself cannot be manufactured. There was a problem that it took a lot of work to install it.

The present invention has been made to solve the above-mentioned conventional drawbacks, and can reduce the manufacturing cost of the packing interposed in the joint portion of the housing main body and the housing cover, and further, can attach the packing. It is also an object of the present invention to provide an easy-to-use waterproof electronic device.

[0007]

According to a first aspect of the present invention, there is provided a waterproof electronic device having a housing body having an opening and a through hole formed in a front wall surface portion facing the opening, and a contact portion at the bottom. A rubber switch part having a button part provided with and a substrate part elastically holding the button part and a packing part surrounding the substrate part are integrally formed of rubber, and the button part is the casing. A rubber switch with packing inserted into the through hole from the opening side of the main body so that the packing part is positioned at the peripheral end face of the housing main body on the opening side, and the pattern contact has the pattern contact. A circuit board that is attached to the housing body in a state of facing the contact portion of the portion and pressing the substrate portion toward the front wall surface portion, and is attached to the housing body so as to cover the opening. From It has a configuration comprising a housing cover for clamping the packing part between the peripheral end face of the opening side of the housing body.

According to a second aspect of the present invention, in the waterproof electronic device according to the first aspect, the rubber switch with packing has a connecting portion that connects the substrate portion and the packing portion, and the connecting portion is an opening portion of the housing body. A first rib that is positioned along a side wall surface portion having an end surface of the side peripheral edge portion and that abuts on the connection portion and prevents the connection portion from separating from the side wall surface portion on the housing cover. It has a configuration provided.

According to a third aspect of the present invention, there is provided the waterproof electronic device according to the first or second aspect, wherein the rubber switch with packing has a hole formed at a position close to the packing, and the end face of the peripheral edge of the housing body on the opening side. Has a second rib inserted into the hole.

[0010]

In the waterproof electronic device according to the first aspect of the present invention, the packing part interposed between the housing body and the housing cover is integrated with the rubber switch part as a part of the rubber switch with packing. The rubber switch part prevents twisting when the packing is attached to the housing body. Further, by positioning the rubber switch portion at a predetermined position on the housing body, the packing portion is positioned on the end face of the opening side peripheral portion of the housing body.

According to a second aspect of the present invention, in the waterproof electronic device according to the first aspect, the connecting portion of the rubber switch with a packing attached to a predetermined position of the casing body is a side wall surface portion of the casing body. Since the first rib on the housing cover side can prevent movement in the direction away from the housing cover, a force that presses the packing portion toward the inside of the housing body acts when the housing cover is attached to the housing body. Even in this case, the displacement of the packing portion from the predetermined position can be prevented by preventing the movement of the connecting portion by the first rib.

In the waterproof electronic device according to claim 3, in the invention according to claim 1 or 2, the second rib on the case body side is inserted into the hole formed in the rubber switch with packing. The second rib positions the packing portion with respect to the housing body, and when the housing cover is attached to the housing body, even if an external force acts in a direction to shift the packing portion from a predetermined position, the packing portion is displaced. It can be prevented by the second rib.

[0013]

Embodiments of the present invention will be described in detail below with reference to FIGS.

1 to 3 are views showing a first embodiment of the present invention, and FIG. 2 is an exploded perspective view of a waterproof electronic device, FIG.
Is the A- of FIG. 2 when the waterproof electronic device of FIG. 2 is assembled.
A sectional view taken along the line A and FIG. 3 are perspective views of the rubber switch with packing.

As shown in FIGS. 1 and 2, the waterproof electronic device according to the present embodiment includes a plastic housing body 110, a housing cover 120, and the inside of the housing body 110 which form the housing of the electronic equipment. Rubber switch with packing that can be attached to 1
30 and a circuit board 140.

The housing main body 110 has an opening 111 for mounting the rubber switch 130 with packing and the circuit board 140 therein, and a front wall surface portion 112 which is a wall surface portion facing the opening portion 111, A large number of through holes 113 into which button portions (134 described later) of the rubber switch with packing 130 are inserted are formed, and partition ribs 114 are provided on the inner side surface of the front wall surface portion 112 so as to partition the respective through holes 113. Has been. Further, a groove 117 is formed so as to surround the opening 111 on the end surface of the side wall surface portion 115 of the housing body 110, that is, the peripheral end surface 116 on the opening 111 side of the housing body 110. Further, in the housing body 110, a boss 118 for screwing the circuit board 140 and a boss 119 for screwing the housing cover 120.
Is erected.

The housing cover 120 has a shape capable of covering the opening 111 of the housing body 110, and
The groove 1 is formed on the end face 121 which is aligned with the peripheral end face 116 of the
Grooves 122 are formed corresponding to 17. Further, inside the housing cover 120, a first rib 123 is provided so as to project toward the housing body 110 side when the housing cover 120 is attached to the housing body 110. The first rib 123 and the side wall surface portion 115 of the housing body 110
A gap of about the plate thickness of the connecting portion (133 described later) of the rubber switch with packing 130 is formed between and.

The rubber switch with packing 130 is shown in FIG.
As shown in FIG. 1, the rubber switch unit 131 and the packing unit 1
32 and a connecting portion 133 for connecting the both 131 and 132 are integrally formed by a rubber such as silicone rubber. The rubber switch part 131 has a button part 134 that is inserted into the through hole 113 of the housing body 110 and a substrate part 135 that elastically holds the button part 134, and a contact part 136 is provided at the bottom of the button part 134. It is made of a conductor.

Further, the connecting portion 133 is connected to the peripheral portion of the substrate portion 135 so as to surround the substrate portion 135,
The packing portion 132 is connected to the peripheral portion of the connecting portion 133 so as to surround the connecting portion 133. In addition,
The switch portion 131 and the connecting portion 133 are shaped so as to fit inside the housing main body 110, and the button portion 134 is inserted into the through hole 113 as shown in FIG.
When the switch part 131 and the connecting part 133 are housed in the housing main body 110, the board part 135 is in contact with the partition rib 114, the connecting part 133 is in contact with the side wall surface part 115, and one of the packing parts 132 is provided. Groove 11 on the end side of
It will be in a state of fitting to 7. It should be noted that the substrate portion 135 has a boss 1
A hole portion 137 for inserting 18 is formed. Further, on the side of the housing cover 120, the screw 1 is provided at a position corresponding to the boss 119.
A boss (not shown) having a hole into which 28 is inserted is provided, and the connecting portion 133 is formed with a hole 138 for escaping the boss.

The circuit board 140 is formed with various circuit parts that constitute the function of the electronic device. The surface side of the circuit board 140 that is in close contact with the board part 135 is patterned so as to face the contact part 136 of the button part 134. A negative contact 141 is provided.

In assembling the waterproof electronic device, as shown in FIG. 2, first, the rubber switch 13 with packing is inserted while the button portion 134 is inserted into the through hole 113 of the housing body 110.
0 is stored in the housing body 110. At this time, packing part 1
Since one end side of 32 corresponds to the groove 117, one end can be easily fitted into the groove 117 by lightly pressing the other end side. Also,
Since the packing portion 132 is a part of the rubber switch 130 with packing, the packing portion 132 is not twisted. Next, the circuit board 140 is placed on the board portion 135 and fixed to the housing body 110 with the screws 148. With this, as shown in FIG.
Since it is pressed against 14, the water drop that has entered the through hole 113 is prevented from entering the circuit board 140 side by the board portion 135. The through hole 11 of the housing body 110
Since a water draining pore 151 is provided in the vicinity of 3, the water droplets collected around the button portion 134
It can be easily discharged to the outside of 10.

Next, the groove 122 of the end surface 121 of the housing cover 120 is positioned on the other end side of the packing portion 132 and fixed to the housing body 110 with the screw 128. with this,
The packing portion 132 is the peripheral end surface 116 of the housing body 110.
Since it is sandwiched between the casing cover 120 and the end surface 121 of the casing cover 120, the packing portion 132 can prevent the intrusion of water droplets from the joint portion between the casing main body 110 and the casing cover 120. In addition, when the case cover 120 is attached, the case cover 120 is provided with the first ribs 123 at a plurality of positions, and the first ribs 123 serve as guides. It can be easily positioned at a predetermined position on the body main body 110. In addition, the housing cover 12
It is conceivable that a force pressing the packing portion 132 toward the inside of the housing body 110 may act when the end surface 121 of 0 contacts the other end portion of the packing portion 132. The movement of the connecting portion 133 in the direction away from the wall surface portion 115 is blocked by the first rib 123, so that the packing portion 132 connecting to the connecting portion 133 is not displaced. In this example, the housing cover 12
Although the packing 125 prevents the intrusion of water droplets from the insertion hole 123 for the screw 128 formed in 0, the hole 138 formed in the connecting portion 133 has a small diameter, and the boss 119 of the housing body 110 is By configuring the connecting portion 133 to be sandwiched between the end surface and the end surface 121 of the housing cover 120, a part of the connecting portion 133 may substitute the packing 125.

4 to 6 are views showing a second embodiment of the present invention, FIG. 4 is an exploded perspective view of a waterproof electronic device, and FIG.
4 is a sectional view taken along the line BB of FIG. 4 in a state where the waterproof electronic device is assembled, and FIG. 6 is a perspective view of the rubber switch with packing. In the rubber switch with packing 130A of this example, as shown in FIG. 6, a hole 139 is formed in the connecting portion 133 in the vicinity of the packing portion 132 along the packing portion 132.
As shown in FIG. 4, a large number of second ribs 153 corresponding to the holes 139 are provided on the peripheral end surface 116 of the housing body 110A. With such a configuration, when the rubber switch 130A with packing is incorporated into the housing body 110A, the second rib 153 is inserted into the hole 139 to allow the packing portion 1 to be inserted.
One end of 32 can be easily positioned in groove 117. Further, even when a force acts in a direction to shift the packing portion 132 from a predetermined position when the housing cover 120 is attached to the housing body 110, the second rib 153 can prevent the displacement of the packing portion 132. Other configurations, operations, and effects are the same as those of the first embodiment.

FIG. 7 is a sectional view of a waterproof electronic device according to the third embodiment of the present invention. This example is based on the above first and second
The case where the present invention is applied to an electronic device that is thinner than that of the embodiment described above is shown. The case body 110B and the case cover 120B that form the case of the electronic device are made thin, and the packing. Attached rubber switch 130B is the substrate part 135
The packing portion 132 is directly provided around the circumference of, and the connecting portion 133 is not provided. Therefore, the first rib 123 for pressing the connecting portion 133 has the housing cover 120B.
A rib (not shown) for fitting the housing cover 120B to the housing body 110A is provided on the housing body 110B side through a hole formed in the substrate portion 135, although not provided on the housing body 120B. . Other configurations, operations, and effects are similar to those of the second embodiment.

[0025]

As described above, in the waterproof electronic device according to the first aspect of the present invention, the packing portion that is interposed between the housing main body and the housing cover is a part of the rubber switch with packing. Therefore, the packing and the rubber switch, which are conventionally manufactured by separate molds, can be manufactured by one mold, and therefore, the cost of the packing for interposing the housing main body and the housing cover together can be reduced. Also, since the packing part is integrated with the rubber switch part, there is no concern that the packing part will be twisted when the packing part is positioned on the end face of the opening side peripheral part of the housing body, and the rubber switch part will not be twisted. The packing portion is positioned on the end face of the peripheral portion by locating the packing portion at a predetermined position. Therefore,
The packing can be installed very easily.

In the waterproof electronic device according to the second aspect of the present invention, the movement of the connecting portion of the rubber switch with packing in the direction away from the side wall surface portion of the housing body is the first of the housing cover. Since it can be blocked by the ribs, in addition to the effect of the invention according to claim 1, even when a force that presses the packing portion toward the inside of the housing body acts when the housing cover is attached to the housing body, By preventing the connecting portion from moving with the rib, it is possible to prevent displacement of the packing portion.

Further, in the waterproof electronic device according to the third aspect, the second rib on the housing body side is inserted into the hole portion of the rubber switch with packing, so that the effect of the invention according to the first or second aspect is achieved. In addition, the packing portion can be positioned with respect to the housing body by the second ribs, and even if an external force acts in a direction to move the packing portion from a predetermined position when the housing cover is attached to the housing body, the packing portion does not move. The second rib has the effect of preventing the deviation.

[Brief description of drawings]

FIG. 1 is a sectional view of a waterproof electronic device according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the waterproof electronic device according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a rubber switch with packing according to the first embodiment of the present invention.

FIG. 4 is an exploded perspective view of a waterproof electronic device according to a second embodiment of the present invention.

FIG. 5 is a sectional view of a waterproof electronic device according to a second embodiment of the present invention.

FIG. 6 is a perspective view of a rubber switch with packing according to a second embodiment of the present invention.

FIG. 7 is a sectional view of a waterproof electronic device according to a third embodiment of the present invention.

FIG. 8 is an exploded perspective view of a conventional waterproof electronic device.

FIG. 9 is a perspective view of a conventional rubber switch.

FIG. 10 is a perspective view of a conventional packing.

[Explanation of symbols]

110, 110A, 110B ......... Main body 111 ... Opening 112 ... Front wall 113 ... Through hole 115 ... Side wall 116 ... Peripheral end face 120, 120B. … Case cover 123 ………… First rib 130, 130A, 130B ……… Rubber switch with packing 131 ……… Rubber switch part 132 ……… Packing part 133 ……… Connecting part 134 ……… Button part 135 ……… Board section 136 ……… Contact section 139 ……… Hole section 140 ……… Circuit board 141 ……… Pattern contact 153 ……… Second rib

Claims (3)

[Claims] 1. A casing main body having an opening and a through hole formed in a front wall surface portion facing the opening, a button portion having a contact portion at the bottom portion, and the button portion elastically held. A rubber switch part having a base plate part and a packing part surrounding the base plate part are integrally formed of rubber, and the button part is inserted into the through hole from the opening side of the housing body to form the packing part. A rubber switch with a packing positioned on the end face of the opening side of the casing body, and a pattern contact, the pattern contact facing the contact part of the button part, and the substrate part A circuit board attached to the housing body in a state of being pressed toward a front wall surface; a peripheral end surface of the housing body on the opening side, the circuit board being attached to the housing body so as to cover the opening; In the above A waterproof electronic device, comprising: a housing cover that holds a packing portion. 2. The rubber switch with packing has a connecting portion for connecting the substrate portion and the packing portion, and the connecting portion is in a state of being along a side wall surface portion of the housing body having an end face on the opening side peripheral edge portion. The first rib that is positioned and is provided on the housing cover, is provided with a first rib that abuts on the connecting portion and prevents the connecting portion from separating from the side wall surface portion. Waterproof electronic device. 3. The rubber switch with packing has a hole formed at a position close to the packing, and a second rib inserted into the hole is provided on an end face of an opening side peripheral edge of the housing body. The waterproof electronic device according to claim 1, wherein the waterproof electronic device is provided.