JP2017009090A - Packing, connection structure using packing, and electronic equipment using connection structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing excellent in workability for assembly of another member, without being exposed to outside.SOLUTION: A packing 400 is assembled into a connection portion between a die-casting main frame 100 as a first member, a synthetic resin-based rear cover 200 as a second member assembled into the main frame 100 from above, and a synthetic resin-based front panel 300 as a third member assembled into the main frame 100 from a front direction as a direction different from the assembly direction of the rear cover 200. A portion contacting with the rear cover 200 is a packing side inclined surface 440 inclined to the assembly direction of the rear cover 200 into the main frame 100.SELECTED DRAWING: Figure 6

Description

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

As shown in FIG. 7, a joint portion between the main frame 100 constituting the radio, the rear cover 200A assembled to the main frame 100 from the upper side, and the front panel 300 assembled to the main frame 100 from the front side is waterproof. A packing 400A is interposed for vibration isolation.
The packing 400 </ b> A is assembled to a 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 200 </ b> A and the front panel 300 are assembled in different directions with respect to the main frame 100, it is difficult to bring both parts into close contact with each other, and a gap is generated at the joint portion. The separation wall 430A prevents the main frame 100 made of die-casting from being seen through the gap between the joint portions, and causes vibration of a speaker (not shown) provided on the front panel 300 to be transmitted to the rear cover 200A. It is also for preventing the occurrence of chatter noise.
As a technique for preventing the chatter noise, there is a technique described in Japanese Patent Application Laid-Open No. 2004-219476.

JP 2004-219476 A

However, both the technique described in Japanese Patent Application Laid-Open No. 2004-219476 and the technique shown in FIG. 7 have a problem in that the top of the separation wall 430A of the packing 400A is exposed to the outside, and the appearance is impaired.
7, when the rear cover 200A is assembled to the main frame 100 from above, the rear cover 200A has caught the corner portion 470A of the separation wall portion 430A of the packing 400A, and the packing 400A has been curled. Since there is a possibility that the rear cover 200A is assembled, there is a problem that the workability is inferior.

  The present invention was devised in view of the above circumstances, and is not exposed to the outside at the joint portion of the member, and has excellent workability when assembling the member, and a joint structure using this packing An object of the present invention is to provide an electronic device using this joining structure.

  The packing according to the present invention includes 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 assembly direction of the second member. A packing-side inclined surface that is assembled to a joint portion with the other member, and a portion that contacts the second member is inclined with respect to the assembling direction of the second member to the first member. It is configured as.

  Further, the packing includes a separation wall portion that is interposed between the second member and the third member assembled to the first member and is not exposed from the gap between the second member and the third member. Is formed.

  The joining structure according to the present invention includes a first member, a second member assembled to the first member, and a first member assembled to the first member from a direction different from the assembly direction of the second member. 3 and a packing that is attached to the first member and assembled to a joint portion of these members, and the packing has a direction in which the second member is assembled to the first member. A slanted packing-side inclined surface is formed, and is interposed between the second member and the third member assembled to the first member, and the second member and the third member A separation wall portion that is not exposed from the gap is formed, and the second member is formed with a member-side inclined surface corresponding to the packing-side inclined surface, and the second member is the first member. When assembled, the member-side inclined surface and the packing-side inclined surface are in close contact with each other. It is configured to.

  The electronic apparatus according to the present invention is a first member, a second member assembled to the first member, and a first member assembled to the first member from a direction different from the assembly direction of the second member. 3 and a packing that is attached to the first member and is assembled to a joint portion of these members, wherein the packing is a set of the second member to the first member. A packing-side inclined surface that is inclined with respect to the attaching direction is formed, interposed between the second member and the third member assembled to the first member, and the second member and the second member A separation wall portion that is not exposed from a gap with the member 3 is formed, a member-side inclined surface corresponding to the packing-side inclined surface is formed on the second member, and the second member is the first member When assembled to one member, the member-side inclined surface and the packing-side inclined surface 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 to the main frame as the first member from above, the rear cover as the member-side inclined surface from the upper side with respect to the packing-side inclined surface of the packing. Since the rear cover side inclined surface comes into contact, the problem that the rear cover is caught by the packing as in the conventional case does not occur. That is, with the packing according to the present invention, the assembly operation of the rear cover can be performed smoothly.

  In addition, since a 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, resulting in the speaker. It is possible to prevent occurrence of chatter noise.

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 from the gap between the two is Since it is not visible from the outside, there is no problem in appearance.
Even if the assembly position of the rear cover or the front panel with respect to the main frame is slightly shifted, the main frame cannot be seen from the gap between them.

It is a schematic perspective view of the packing which concerns on embodiment of this invention. It is drawing of the packing which concerns on embodiment of this invention, Comprising: The figure (A) is a schematic front view, The figure (B) is a schematic plan view, The figure (C) is a schematic side view. It is a schematic disassembled perspective view of the radio as an electronic device sealed with the packing which concerns on embodiment of this invention. It is a schematic perspective view of the radio | wireless machine as an electronic device sealed with the packing which concerns on embodiment of this 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. It is a schematic expanded sectional view of the principal part (A section shown in Drawing 5) of the radio as an electronic equipment sealed with packing concerning an embodiment of the invention. It is a schematic expanded sectional view which shows the principal part of the radio | wireless machine as an electronic device which shows the conventional packing and the junction 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 synthetic resin rear cover 200 as a second member assembled to the main frame 100 from above. A packing that is assembled to a joint portion with a front panel 300 made of synthetic resin as a third member that is assembled to the main frame 100 from the front direction that is different from the assembly direction of the rear cover 200. The portion in contact with is a packing-side inclined surface 440 that is inclined with respect to the assembly 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 radio 1000 as an electronic device to which the packing 400 is assembled will be described with reference to FIGS. 3, 4, and 6. FIG.
This wireless device 1000 is an in-vehicle wireless device for air band that can communicate in a frequency band of radio waves used when an aircraft and a ground facility such as an airport perform wireless communication.
The wireless device 1000 includes a die-cast main frame 100, a synthetic resin rear cover 200 that is attached to the main frame 100 from above, and a front panel 300 that is attached to the main frame 100 from the front side. These three members are the main structural members.

The main frame 100 stores various electronic circuits therein and is formed in a flat rectangular parallelepiped shape. Radiation fins 110 for radiating heat are formed on the back and bottom surfaces of the main frame 100 (only the radiation fins 110 on the back side are shown for the sake of drawing). In addition, horizontally long convex portions 120 for fixing the rear cover 200 are formed on the left and right side surfaces of the main frame 100.
Further, on the front side of the main frame 100, that is, the side on which the front panel 300 is assembled, a recess 130 for storing an electronic circuit or the like provided on the front panel 300 is provided.
The convex portion 120 is formed with two female screws 121. The female screw 121 is used when the wireless device 1000 is attached 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 includes a front convex portion 141 formed at the front edge of the main frame 100 and a rear convex portion formed behind the front convex portion 141. 142.
Further, in the recess 140 for packing, in order to position and fix the packing 400 to be assembled, notches 145 into which the T-shaped projections 450 of the packing 400 are fitted are formed at a plurality of locations (six locations in the drawing) in the front convex portion 141. ing.

The main frame 100 has an open upper surface, and a metal upper cover 150 is placed on the opened portion.
Note that an opening 151 is formed in the top cover 150. The opening 151 attaches the wireless device 1000 and a headset (not shown) to a short-range wireless module (for example, Bluetooth (registered trademark) for short-range wireless communication for digital devices), and the top cover 150 is attached. After that, it is provided so that it can be attached to and detached from the circuit board.

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 concave shape that is substantially reverse in a front view.
The rear cover 200 is assembled to the main frame 100 from above. The left and right side surfaces 210 of the rear cover 200 are provided with locking openings 211 corresponding to the convex portions 120.
The rear cover 200 is sized so as not to cover the upper side of the packing recess 140 when assembled to the main frame 100.

  Further, the front side edge of the rear cover 200 is a rear cover side inclined surface 240 as a member side inclined surface corresponding to a 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 brought into close contact with each other.

The front panel 300 has a sleeve portion 310 formed rearward from the front edge, 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 made of a liquid crystal panel, various switches such as a power switch 330, a speaker 340, and the like.

Next, the packing 400 will be described with reference to FIGS. 1 and 2.
The packing 400 is made of an elastic body such as silicone rubber, and is formed in a horizontally long and substantially rectangular shape corresponding to the shape of the front surface of the main frame 100.
As shown in FIG. 1, the packing 400 includes a fitting portion 410 that is a portion that fits into the packing concave portion 140 between the front convex portion 141 and the rear convex portion 142, and the fitting portion 410. The front panel convex vein portion 420 projecting toward the outside of the front panel and the separation wall portion 430 extending from the fitting portion 410 and positioned on the rear convex portion 142 are integrally formed. In addition, the part of the separation wall 430 on the rear cover 200 side that contacts the rear cover side inclined surface 240 at the front edge of the rear cover 200 is inclined with respect to the assembly 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 to a dimension that does not protrude outward from the gap between the rear cover 200 and the front panel 300 even when 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 both the left and right side surfaces of the main frame 100, the separation wall portion 430 and the packing-side inclined surface 440 of the packing 400 are provided on the main frame 100. It is formed only on portions corresponding to the upper surface and the left and right side surfaces.

Further, the packing 400 is formed with a T-shaped protrusion 450 having a substantially T-shape projecting inwardly from the fitting portion 410. The T-shaped projection 450 is a portion that fits into a notch 145 formed in the front convex portion 141 of the packing concave portion 140 of the main frame 100. Accordingly, the T-shaped protrusion 450 is formed at a plurality of locations (six locations in the drawing) corresponding to the arrangement of the notches 145.
The T-shaped protrusion 450 is integrally formed with a neck portion 451 set slightly shorter than the thickness of the front convex portion 141 and a head portion 452 set larger than the notch 145 at the tip of the neck portion 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 assembled into the main frame 100 in a state where the separation wall portion 430 is positioned on the rear convex portion 142. The separation wall 430 is positioned between the rear cover side inclined surface 240 of the front side edge of the rear cover 200 to be assembled to the main frame 100 and the rear side edge of the front panel 300.
In this state, since the packing 400 fits into the notch 145 of the T-shaped protrusion 450 and is fixed to the main frame 100, a positional shift of the packing 400 does not occur during subsequent work, so that the smooth work It can be performed.

The rear cover 200 is assembled from the upper side to the main frame 100 to which the packing 400 is assembled in this way (see FIG. 6). Then, the rear cover side inclined surface 240 at the front edge of the rear cover 200 is in close contact with the packing side inclined surface 440 of the packing 400.
Thus, the vibration-proof property of the joint portion at the front edge portion between the main frame 100 and the rear cover 200 is ensured 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. 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 portion 470A of the separation wall portion 430A of the conventional rear cover 200A is caught by the packing 400A does not occur. That is, with the packing 400 according to the embodiment of the present invention, the assembly operation of the rear cover 200 can be performed smoothly. Further, the separation wall 430 is not exposed to the outside through the gap between the rear cover 200 and the front panel 300, and the aesthetic appearance is not impaired.

Next, the front panel 300 is assembled to the main frame 100 from the front side, which is a direction different from the assembly 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 crushes the front panel convex ridge portion 420 formed to protrude above the fitting portion 410 of the packing 400.
Thus, watertightness of the joint portion at the rear edge of the main frame 100 and the front panel 300 is ensured by the packing 400.
Note that the electronic circuit and the like provided on the front panel 300 are stored in a watertight state in the recess 130 of the main frame 100.

  In addition, 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 occurrence of chatter noise caused by the occurrence of the noise.

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 inclined surface 440 is present, the die-cast main frame 100 is located outside the gap between the two. Is invisible.
Even if the rear cover 200 and the front panel 300 are slightly displaced, the main frame 100 cannot be seen from the gap between them.
In addition, although die casting needs to be colored from the problem of an external appearance when there exists a possibility of being visible from a clearance gap, it is not necessary when this packing 400 is used.

In the above-described embodiment, the in-vehicle wireless device 1000 for airband is given as an example of the electronic device. However, the present invention is not limited to this, and a marine or handy wireless device, Needless to say, the present invention can also be applied to other electronic devices such as audio devices.
Further, 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 thereto. If the packing is assembled to the joint portion between the second member assembled to the first member and the third member assembled to the first member from a direction different from the assembly direction of the second member, Compatible with various types.

Moreover, although the inclination angle of the packing-side inclined surface 440 is 45 ° toward the rear cover 200, it goes without saying that the angle may be different. However, in that 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 inclined surface

Claims (4)

  In a joint portion between the first member, the second member assembled to the first member, and the third member assembled to the first member from a direction different from the assembly direction of the second member. In the packing to be assembled, the portion in contact with the second member is a packing-side inclined surface that is inclined with respect to the assembly direction of the second member to the first member.   The packing is formed with a separation wall portion that is interposed between the second member and the third member assembled to the first member and is not exposed from the gap between the second member and the third member. The packing according to claim 1, wherein the packing is formed.   A first member, a second member assembled to the first member, a third member assembled to the first member from a direction different from the assembly direction of the second member, and the first member And a packing that is attached to the joint portion of these members, and the packing is inclined with respect to the assembly direction of the second member to the first member. Separation that is formed between the second member and the third member that are assembled to the first member and that is not exposed from the gap between the second member and the third member, while forming a side inclined surface A wall portion is formed, and the second member is formed with a member-side inclined surface corresponding to the packing-side inclined surface, and when the second member is assembled to the first member, the member side 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 the assembly direction of the second member, and the first member In the electronic apparatus having the packing attached to the members and assembled to the joint portion of these members, the packing is slanted with respect to the assembling direction of the second member to the first member. Separation that is formed between the second member and the third member that are assembled to the first member and that is not exposed from the gap between the second member and the third member, while forming a side inclined surface A wall portion is formed, and the second member is formed with a member-side inclined surface corresponding to the packing-side inclined surface, and when the second member is assembled to the first member, the member side Inclined surface and packing side inclined surface are in close contact Electronic equipment.

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