JP6519345B2 - Packing, bonding structure using the packing, and electronic device using the bonding structure - Google Patents

Description

  The present invention relates to a packing assembled to a joint portion of a member, a joint structure using the packing, and an electronic device using the joint structure.

As shown in FIG. 7, the junction between the main frame 100 constituting the wireless device, the rear cover 200A assembled from the upper side to the main frame 100, and the front panel 300 assembled from the front side to the main frame 100 is waterproof. A packing 400A is interposed for vibration isolation.
The packing 400 </ b> A is assembled to the packing recess 140 provided at the front edge of the main frame 100. In the packing 400A, a separation wall portion 430A interposed between the rear cover 200A and the front panel 300 is formed. Since the rear cover 200A and the front panel 300 are assembled in different directions with respect to the main frame 100, it is difficult to bring the two parts into close contact with each other, and a gap is generated at the joint portion. The separation wall portion 430A prevents the die-cast main frame 100 from being seen through the gap of the joint portion, and the vibration of the speaker (not shown) provided on the front panel 300 is transmitted to the rear cover 200A. It is also to prevent the generation of chattering noise.
As a technique for preventing the generation of chattering noise, there is a technique described in JP-A 2004-219476.

Unexamined-Japanese-Patent No. 2004-219476

However, even with the technique described in Japanese Patent Laid-Open No. 2004-219476 and the technique described in FIG. 7, there is a problem that the top of the separation wall portion 430A of the packing 400A is exposed to the outside and the appearance is impaired.
Further, in the technique described in FIG. 7, when assembling the rear cover 200A from the upper side to the main frame 100, the rear cover 200A is hooked on the corner 470A of the separation wall 430A of the packing 400A, and the packing 400A is curled As a result, there is a possibility that the rear cover 200A may be assembled, so there is also a problem that the workability is inferior.

  The present invention has been made in view of the above-mentioned circumstances, and a packing which is excellent in workability in assembling the members without being exposed to the outside at the joint portion of the members, and a joint structure using the packing It is an object of the present invention to provide an electronic device using this junction structure.

The packing according to the present invention comprises a first member, a second member assembled to the first member, and a third member assembled to the first member from a direction different from the assembling direction of the second member. The packing is assembled to a joint portion with a member, and the portion in contact with the second member is a packing side inclined surface which is oblique to the assembling direction of the second member to the first member. In the packing, the separation wall portion is formed between the second member and the third member assembled to the first member and not exposed from the gap between the second member and the third member. It is done.

  The joint structure according to the present invention comprises the first member, the second member assembled to the first member, and the first member assembled from the direction different from the assembling direction of the second member. And a packing which is attached to the first member and assembled to a joint portion of these members, and the packing includes the second member in the mounting direction to the first member. A packing side inclined surface which is inclined with respect to the other is formed, and the second member and the third member are interposed between the second member and the third member assembled to the first member. A separation wall portion which is not exposed from the gap between the first and second members, and a member-side inclined surface corresponding to the packing-side inclined surface is formed on the second member, and the second member is a first member Member side inclined surface and packing side inclined surface It is configured to.

  The electronic device according to the present invention includes the first member, the second member assembled to the first member, and the first member assembled from the direction different from the assembling direction of the second member. An electronic apparatus comprising: three members; and a packing attached to the first member and assembled to a joint portion of the members, wherein the packing includes a pair of the second member to the first member. A packing side inclined surface inclined with respect to the attaching direction is formed, and the second member and the third member are interposed between the second member and the third member assembled to the first member, and the second member and the third member are A separation wall portion which is not exposed from the gap with the member 3 is formed, a member side inclined surface corresponding to the packing side inclined surface is formed in the second member, and the second member is a second member. When assembled to the member 1, the member-side inclined surface and the packing-side inclination Door is made to be in close contact.

  According to the packing according to the present invention, even if the rear cover as the second member is assembled from the upper side to the main frame as the first member, it is as the member side inclined surface of the rear cover from the upper side with respect to the packing side inclined surface of the packing. Since the rear cover side inclined surface is in contact, the problem that the rear cover is caught on the packing as in the prior art does not occur. That is, with the packing according to the present invention, the rear cover can be assembled smoothly.

  In addition, since the separation wall portion of the packing is interposed between the rear cover and the front panel as the third member, the vibration of the speaker incorporated in the front panel is not directly transmitted to the rear cover, which is caused by the speaker It is possible to prevent the generation of chattering noise in advance.

Furthermore, since the separation wall portion of the packing is interposed in the gap between the rear cover and the front panel, and there is a packing side inclined surface, the die-cast main frame as the first member is Since it is not visible from the outside, there is no problem in appearance.
Even if the mounting position of the rear cover or the front panel with respect to the main frame is slightly deviated, the main frame can not be seen from the gap between the two.

It is a schematic perspective view of packing concerning an embodiment of the invention. It is drawing of packing which concerns on embodiment of this invention, Comprising: The same figure (A) is a schematic front view, the same figure (B) is a schematic plan view, the same figure (C) is a schematic side view. FIG. 2 is a schematic exploded perspective view of a wireless device as an electronic device sealed with a packing according to an embodiment of the present invention. It is a schematic perspective view of a radio set as an electronic device sealed with packing concerning an embodiment of the invention. It is the schematic sectional drawing which abbreviate | omitted the internal structure of the radio | wireless machine as an electronic device sealed with the packing which concerns on embodiment of this invention. FIG. 6 is a schematic enlarged cross-sectional view of a main part (part A shown in FIG. 5) of the wireless device as the electronic device sealed with the packing according to the embodiment of the present invention. FIG. 8 is a schematic enlarged cross-sectional view showing the main parts of a wireless device as an electronic device showing a conventional packing and a joint structure using the same.

  A packing 400 according to an embodiment of the present invention includes a die-cast main frame 100 as a first member, and a rear cover 200 made of synthetic resin as a second member assembled from the upper side to the main frame 100. The packing is assembled to a joint portion with a synthetic resin front panel 300 as a third member assembled to the main frame 100 from the front direction which is a direction different from the assembling direction of the rear cover 200. The portion in contact with the above is a packing side inclined surface 440 which is oblique to the mounting direction of the rear cover 200 to the main frame 100.

First, prior to the description of the packing 400, the main configuration of the wireless device 1000 as an electronic device to which the packing 400 is assembled will be described with reference to FIG. 3, FIG. 4 and FIG.
The wireless device 1000 is an air band in-vehicle wireless device capable of communicating in a frequency band of radio waves used when wireless communication is performed between an aircraft and a ground facility such as an airport.
The wireless device 1000 includes a main frame 100 made of die cast, a rear cover 200 made of synthetic resin which is assembled from the upper side of the main frame 100, and a front panel 300 assembled from the front side to the main frame 100. The three structural members are the main structural members.

The main frame 100 stores various electronic circuits therein, and is formed in a flat rectangular parallelepiped shape. The heat dissipating fins 110 for heat dissipation are formed on the back and bottom of the main frame 100 (only the heat dissipating fins 110 on the back side are shown for convenience of drawing). Also, laterally long convex portions 120 for fixing the rear cover 200 are formed on both left and right side surfaces of the main frame 100.
Further, on the front side of the main frame 100, that is, on the side where the front panel 300 is assembled, a recess 130 for storing an electronic circuit and the like provided on the front panel 300 is provided.
In addition, two female screws 121 are formed on the convex portion 120. The female screw 121 is used when attaching the wireless device 1000 to a bracket (not shown).

A packing recess 140 for assembling the packing 400 is formed at the front edge of the main frame 100. As shown in FIG. 6, the packing concave portion 140 is provided with a front convex portion 141 formed on the front edge of the main frame 100 and a rear convex portion formed rearward of the front convex portion 141. It is sandwiched by 142.
Further, in the recess for packing 140, plural notches (six places in the drawing) are formed in the front convex part 141 for inserting the T-shaped projection 450 of the packing 400 for positioning and fixing the packing 400 to be assembled. ing.

Further, the upper surface of the main frame 100 is open, and a metal upper cover 150 is placed on the open portion.
In the upper surface cover 150, an opening 151 is formed. The opening 151 mounts the top cover 150 to the wireless device 1000 and a headset (not shown) for short distance wireless communication (for example, Bluetooth (registered trademark) of short distance wireless communication standard for digital devices) module components It is provided so that it can be attached to and detached from the circuit board after the

The rear cover 200 covers the upper surface and the left and right side surfaces of the main frame 100, and is formed in a substantially reverse concave shape in a front view.
The rear cover 200 is assembled to the main frame 100 from the upper side. Locking openings 211 corresponding to the convex portions 120 are formed on the left and right side surfaces 210 of the rear cover 200.
The rear cover 200 is set such that it does not cover the upper side of the packing recess 140 when assembled to the main frame 100.

  Further, the front edge portion of the rear cover 200 is a rear cover side inclined surface 240 as a member side inclined surface corresponding to the packing side inclined surface 440 of the packing 400 described later. That is, when the rear cover 200 is assembled to the main frame 100 to which the packing 400 is assembled, the packing side inclined surface 440 and the rear cover side inclined surface 240 are in close contact with each other.

In the front panel 300, a sleeve portion 310 is formed rearward from the front edge portion, and the sleeve portion 310 is assembled to the front side of the main frame 100.
The front panel 300 incorporates a display unit 320 formed of a liquid crystal panel or the like, various switches such as a power switch 330, and a speaker 340.

Next, the packing 400 will be described with reference to FIGS. 1 and 2.
The packing 400 is made of an elastic material such as silicone rubber, and is formed in a generally long, substantially U-shape in a horizontally long shape corresponding to the shape of the front of the main frame 100.
The packing 400 is, as shown in FIG. 1, a fitting portion 410 which is a portion to be fitted into the packing recess 140 between the front protrusion 141 and the rear protrusion 142, and the fitting portion 410. A protruding portion 420 for the front panel which protrudes toward the outside, and a separation wall 430 extended from the fitting portion 410 and positioned on the rear side protrusion 142 are integrally formed. In addition, the part of the front edge of the rear cover 200 in contact with the rear cover side inclined surface 240 on the rear cover 200 side of the separation wall portion 430 is oblique to the assembling direction of the rear cover 200 to the main frame 100. It is formed as a packing side inclined surface 440.
The packing side inclined surface 440 is lowered at an inclination angle of 45 ° toward the rear cover 200 side.

  Further, the height of the separation wall 430 is set such that it does not protrude outward from the gap between the rear cover 200 and the front panel 300 even if the rear cover 200 and the front panel 300 are assembled to the main frame 100. ing.

  As described above, since the rear cover 200 covers only the upper surface and the left and right side surfaces of the main frame 100, the separation wall portion 430 of the packing 400 and the packing side inclined surface 440 are the same as those of the main frame 100. It is formed only in a portion corresponding to the upper surface and the left and right side surfaces.

Furthermore, a substantially T-shaped T-shaped protrusion 450 is formed in the packing 400 so as to project inward from the fitting portion 410. The T-shaped protrusion 450 is a portion that fits into the notch 145 formed in the front convex portion 141 of the packing recess 140 of the main frame 100. Accordingly, the T-shaped projections 450 are formed at a plurality of locations (six locations in the drawing) in correspondence with the arrangement of the notches 145.
The T-shaped projection 450 is integrally formed with a neck 451 set slightly shorter than the thickness dimension of the front protrusion 141, and a head 452 set larger than the incision 145 at the tip of the neck 451. .

The assembly of the packing 400 thus configured to the main frame 100 and the assembly of the rear cover 200 and the front panel 300 to the main frame 100 will be described with reference to FIGS. 5 and 6.
First, the fitting portion 410 is fitted into the packing recess 140 while the T-shaped protrusion 450 is fitted into the notch 145. Then, the packing 400 is incorporated into the main frame 100 with the separation wall 430 positioned on the rear convex portion 142. The separation wall 430 is located between the rear cover side inclined surface 240 of the front edge of the rear cover 200 to be assembled to the main frame 100 and the rear edge of the front panel 300.
In this state, since the packing 400 is fitted to the notch 145 of the T-shaped projection 450 and fixed to the main frame 100, no positional displacement of the packing 400 occurs at the time of the later work, so smooth work It can be performed.

In this manner, the rear cover 200 is assembled from the upper side to the main frame 100 on which the packing 400 is assembled (see FIG. 6). Then, the rear cover side inclined surface 240 of the front edge portion of the rear cover 200 is in close contact with the packing side inclined surface 440 of the packing 400.
In this way, the vibration-proofness of the joint portion at the front edge of the main frame 100 and the rear cover 200 is secured by the packing 400.
Further, when the rear cover 200 is correctly assembled to the main frame 100, the convex portion 120 of the main frame 100 is fitted into the locking opening 211 of the rear cover 200.

  When the rear cover 200 is assembled to the main frame 100, the rear cover 200 is covered from the upper side of the main frame 100, but the rear cover side inclined surface 240 of the rear cover 200 contacts the packing side inclined surface 440 of the packing 400 from the upper side. Therefore, the problem that the corner 470A of the separation wall 430A of the conventional rear cover 200A is caught on the packing 400A does not occur. That is, with the packing 400 according to the embodiment of the present invention, the assembling operation of the rear cover 200 can be smoothly performed. Further, the separation wall 430 is not exposed to the outside from the gap between the rear cover 200 and the front panel 300, and the appearance is not lost.

Next, the front panel 300 is assembled to the main frame 100 from the front side which is a direction different from the assembling direction of the rear cover 200. The front panel 300 is assembled to the main frame 100 in a state in which the sleeve portion 310 squeezes the convex vein portion 420 for the front panel formed to protrude above the fitting portion 410 of the packing 400.
Thus, the watertightness of the joint portion at the rear side edge between the main frame 100 and the front panel 300 is secured by the packing 400.
The electronic circuits and the like provided in the front panel 300 are stored in the recess 130 of the main frame 100 in a watertight state.

  Moreover, since the separation wall 430 of the packing 400 is interposed between the rear cover 200 and the front panel 300, the vibration of the speaker 340 incorporated in the front panel 300 is not directly transmitted to the rear cover 200, and the speaker 340 It is possible to prevent the generation of chattering noise caused by

Since the separation wall 430 of the packing 400 is located in the gap between the rear cover 200 and the front panel 300 and the packing side sloped surface 440 is provided, the die-cast main frame 100 is outside from the gap between them. It can not be seen from
Even if the rear cover 200 and the front panel 300 are slightly misaligned, the main frame 100 can not be seen from the gap between them.
In addition, although it is necessary to color a die cast from a problem on appearance when there is a possibility that it may be visible from a gap, when this packing 400 is used, it is not necessary.

In the embodiment described above, the on-vehicle wireless device 1000 for air band is mentioned as an example of the electronic device, but the present invention is not limited to this, and a wireless device for marine and handy devices, It goes without saying that the present invention is also applicable to other electronic devices such as audio devices.
Although the first member is the main frame 100, the second member is the rear cover 200, and the third member is the front panel 300, it goes without saying that the present invention is not limited to these. If it is a packing assembled to the joint portion of the second member assembled to the first member and the third member assembled to the first member from a direction different from the assembling direction of the second member, It is possible to cope with various things.

Further, although the inclination angle of the packing side inclined surface 440 is 45 ° toward the rear cover 200 side, it is needless to say that the inclination angle may be different. However, in this case, the inclination angle of the rear cover side inclined surface 240 is not 45 °, but corresponds to the inclination angle of the packing side inclined surface 440.

100 Main frame (first member)
200 Rear cover (second member)
240 Rear cover side inclined surface (member side inclined surface)
300 front panel (third member)
400 packing 430 separation wall 440 packing side sloped surface

Claims (3)

At a joint portion between a first member, a second member assembled to the first member, and a third member assembled to the first member from a direction different from the assembling direction of the second member a packing assembled, portions in contact with said second member, the gasket is a gasket side inclined surface is oblique with respect to the assembling direction of the first member of the second member, the first A separation wall portion which is interposed between the second member and the third member assembled to the first member and which is not exposed from the gap between the second member and the third member; packing to. A first member, a second member assembled to the first member, a third member assembled to the first member from a direction different from an assembling direction of the second member, and the first member And a packing which is attached to a joint portion of these members and assembled to a joint portion of these members, wherein the packing is a packing which is inclined with respect to the assembling direction of the second member to the first member. A side sloped surface is formed, and it is a separation which is interposed between the second member and the third member assembled to the first member and which is not exposed from the gap between the second member and the third member A wall portion is formed, and a member-side inclined surface corresponding to the packing-side inclined surface is formed on the second member, and when the second member is assembled to the first member, the member side is formed. Bonding characterized in that the inclined surface and the packing side inclined surface are in close contact Elephants. A first member, a second member assembled to the first member, a third member assembled to the first member from a direction different from an assembling direction of the second member, and the first member In the electronic device, the packing includes: a packing that is oblique to a mounting direction of the second member to the first member; A side sloped surface is formed, and it is a separation which is interposed between the second member and the third member assembled to the first member and which is not exposed from the gap between the second member and the third member A wall portion is formed, and a member-side inclined surface corresponding to the packing-side inclined surface is formed on the second member, and when the second member is assembled to the first member, the member side is formed. It features that the inclined surface and the packing side inclined surface are in close contact Electronic equipment.

Images