WO2013114424A1

WO2013114424A1 - Structure for positioning panel, and electronic instrument

Info

Publication number: WO2013114424A1
Application number: PCT/JP2012/000568
Authority: WO
Inventors: 秀行廣田; 一弘都築
Original assignee: 三菱電機株式会社
Priority date: 2012-01-30
Filing date: 2012-01-30
Publication date: 2013-08-08
Also published as: JP5449631B2; JPWO2013114424A1

Abstract

This structure comprises: an extended part (6a) formed by extending a side surface of a chassis (3) that is orthogonal to one side surface thereof; an extended part (7a) formed by extending a side surface of the chassis (3) that is orthogonal to said one side surface thereof and that opposes the side surface where the extended part (6a) is provided; a contact surface part (6b-1) and an inner wall part (6b-2) that are provided to a panel (4) and that position the panel (4) in a direction perpendicular to the extended part (6a); contact surface parts (6b-3, 6b-4) that are provided to the panel (4) and that position the panel (4) in a direction parallel to the extended part (6a); and contact surface parts (7b-1, 7b-2) that are provided to the panel (4) and that position the panel (4) in a direction parallel to the extended part (7a).

Description

Panel positioning structure and electronic equipment

The present invention relates to a panel positioning structure in a structure in which a panel is assembled to a chassis, and an electronic apparatus having this structure.

In a structure in which a panel is assembled to a chassis, a panel substrate disposed on the back surface of the panel and a main substrate disposed on the chassis may be connected by an inter-board connector. In this case, when the panel is assembled to the chassis, positioning accuracy is required so that the panel substrate and the main substrate are reliably connected via the connector.
For example, Patent Document 1 discloses a structure for attaching a cabinet (panel) to a chassis. This structure attaches a cabinet to a chassis by fitting the extension part provided in the right and left both sides of a cabinet to the engagement convex part provided in the both sides | surfaces of a chassis.

JP 2002-324982 A

In the conventional panel assembly structure, the front chassis in which the panel is fitted is assembled on the front surface of the chassis body. In this structure, positioning is performed by the outer shape of the front chassis and the inner shape of the panel. However, in consideration of manufacturing dimensional variations, it is necessary to set a clearance between the front chassis and the panel. For this reason, the front chassis and the chassis main body move within the panel by the clearance, and there is a problem that the positioning accuracy is low.

In particular, in a structure in which a panel is assembled to a chassis, a panel substrate provided in the panel and a substrate provided in the chassis are often fixed with an inter-board connector.
Since the board-to-board connector is a connector mounted on the board, high positioning accuracy is required for assembling the chassis and the panel in order to securely connect the boards.

In addition, since there is a large difference between thermal expansion or thermal shrinkage between a front chassis made of metal and a panel made of resin, positioning accuracy is long for structures with a long positioning pitch for fitting the front chassis into the panel. There is a limit to the improvement of the heat resistance, and there is a possibility of damage due to the effects of thermal expansion or contraction.

The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a panel positioning structure capable of improving the panel positioning accuracy with a simple configuration, and an electronic apparatus including the structure. And

The panel positioning structure according to the present invention is a structure in which a panel is assembled to one side surface of a box-shaped chassis. In the panel positioning structure for positioning the panel with respect to one side surface of the chassis, a side surface orthogonal to one side surface of the chassis is extended. A first extending portion, a second extending portion formed by extending a side surface that is orthogonal to one side surface of the chassis and that faces the side surface provided with the first extending portion, and a panel. A first positioning portion that sandwiches and positions the first extending portion in the thickness direction of the first extending portion, and is provided on the panel, and the first extending portion is the first extending portion. A second positioning portion that is sandwiched and positioned in a direction perpendicular to the thickness direction of the first and second panels, and the second extending portion is sandwiched and positioned in a direction perpendicular to the thickness direction of the second extending portion. And a third positioning unit.

According to the present invention, the panel positioning accuracy can be improved with a simple configuration.

It is a perspective view which shows an electronic device provided with the panel positioning structure which concerns on this invention. It is a disassembled perspective view of the conventional electronic device. It is a figure which shows the panel positioning structure of the conventional electronic device. It is a figure which shows the structure of an electronic device provided with the panel positioning structure which concerns on Embodiment 1. FIG. It is the elements on larger scale which show the panel positioning structure (extension part 6a, positioning part 6b) concerning Embodiment 1. FIG. It is the elements on larger scale which show the panel positioning structure (extension part 7a, positioning part 7b) concerning Embodiment 1. FIG. It is a perspective view which shows the fixation aspect to the chassis of a panel. FIG. 3 is a perspective view illustrating a specific aspect of the electronic device according to the first embodiment. It is a perspective view which shows the panel positioning structure in the electronic device of FIG. It is a perspective view which shows the panel positioning structure after the panel assembly in the electronic device of FIG. It is the elements on larger scale which show the panel positioning structure (extended part 6a, positioning part 6b) of FIG. It is the elements on larger scale which show the panel positioning structure (extended part 7a, positioning part 7b) of FIG.

Hereinafter, in order to describe the present invention in more detail, modes for carrying out the present invention will be described with reference to the accompanying drawings.
Embodiment 1 FIG.
FIG. 1 is a perspective view showing an electronic apparatus having a panel positioning structure according to the present invention. The electronic device 1 shown in FIG. 1 includes a cover 2, a main body composed of a box-shaped chassis 3 whose top surface is covered with the cover 2, and a panel 4 provided on the front surface of the chassis 3.
Conventionally, in order to realize an electronic device such as the electronic device 1, the panel 4 is assembled to the front surface of the chassis 3 via the front chassis 4 b as shown in FIG. 2.
A panel substrate 4 a is attached in the panel 4, and a substrate 5 is attached in the chassis 3. The board 5 and the panel board 4a are electrically connected by the board-to-

board connectors

5a and 5b through the opening of the front chassis 4b.

Moreover, in the conventional electronic device, as shown in FIG. 3A, the panel 4 is formed in a substantially box shape with one surface opened. As shown in the cross-sectional view of FIG. 3B, the panel 4 is assembled by fitting the front chassis 4b into the opening.
On the other hand, in a structure in which a plurality of members are assembled, it is generally necessary to set a clearance between the assembled members in consideration of dimensional variations in manufacturing.
Therefore, also in the conventional electronic device, a clearance is provided between the inner shape of the panel 4 and the outer shape of the front chassis 4b. For this reason, the front chassis 4b and the chassis 3 to which the front chassis 4b is assembled move within the panel 4 by the clearance.
Furthermore, since the panel 4 and the front chassis 4b are generally formed of different materials such as metal and resin, the thermal contraction difference between the panel 4 and the front chassis 4b is large. For this reason, there is a limit to the improvement of positioning accuracy, and there is a possibility of damage due to the influence of heat shrinkage.

Therefore, as shown in FIG. 4, the present invention does not use a separate front chassis 4b, but has a panel positioning structure including extending

portions

6a and 7a on the chassis 3 side and positioning

portions

6b and 7b on the panel 4 side. The panel 4 is assembled directly to the chassis 3.
Thereby, even if a clearance is provided between the assembled chassis 3 and the panel 4, the movement of the panel 4 is prevented, and the positioning accuracy can be improved. Details of the panel positioning structure according to the present invention will be described below.

As shown in FIG. 5, the extending portion (first extending portion) 6 a is a plate-like portion formed by partially extending a chassis side surface perpendicular to the panel assembly surface opened in the chassis 3.
As shown in FIG. 5, the positioning portion 6b for positioning the panel 4 with respect to the chassis 3 by contacting the extended portion 6a at the time of assembly includes the contact surface portion 6b-1, the inner wall portion 6b-2, and the contact surface portion 6b- 3, 6b-4.

The contact surface portion 6b-1 and the inner wall portion 6b-2 are provided on the back surface of the panel 4, and are positioned in the direction perpendicular to the extending portion 6a by sandwiching and holding the extending portion 6a in the thickness direction thereof. 1 is a positioning unit.
That is, the contact surface portion 6b-1 and the inner wall portion 6b-2 are formed on the back surface side of the panel 4 at an interval corresponding to the dimension in the thickness direction of the extending portion 6a. By assembling the panel 4 to the chassis 3, The extended portion 6a comes into contact with the extended portion 6a from both sides in the thickness direction. Thereby, the movement of the panel 4 in the direction (left-right direction) perpendicular to the extending portion 6a is restricted and positioned.

The contact surface portions 6b-3 and 6b-4 are provided on the back surface of the panel 4, and are held in a direction parallel to the extending portion 6a by sandwiching and holding the extending portion 6a in a direction perpendicular to the thickness direction thereof ( It is the 2nd positioning part which positions the panel 4 in the up-down direction).
That is, the contact surface portions 6b-3 and 6b-4 are formed on the back surface side of the panel 4 at intervals corresponding to the dimension (height) in the direction perpendicular to the thickness direction of the extending portion 6a. 3 is brought into contact with the extended portion 6a from both sides in the direction perpendicular to the thickness direction of the extended portion 6a. Thereby, the movement of the panel 4 in a direction (vertical direction) parallel to the extending portion 6a is regulated and positioned.

As shown in FIG. 6, the extending portion (second extending portion) 7 a is formed by extending a side surface that is orthogonal to the side of the chassis 3 that is open and that faces the side surface provided with the extending portion 6 a. It is a plate-like part. Further, the positioning portion 7b for positioning the panel 4 with respect to the chassis 3 when hitting the extending portion 7a during assembly includes contact surface portions 7b-1 and 7b-2 as shown in FIG.

The contact surface portions 7b-1 and 7b-2 are provided on the back surface of the panel 4, and the extending portion 7a is sandwiched and held in a direction perpendicular to the thickness direction thereof, so that the panel 4 extends in a direction parallel to the extending portion 6a. It is the 3rd positioning part which performs positioning.
That is, the contact surface portions 7b-1 and 7b-2 are formed on the back surface side of the panel 4 at intervals corresponding to the dimension (height) in the direction perpendicular to the thickness direction of the extending portion 7a. 3 is brought into contact with the extended portion 7a from both sides in the direction perpendicular to the thickness direction of the extended portion 7a. Thereby, the movement of the panel 4 in a direction (vertical direction) parallel to the extending portion 7a is regulated and positioned.

For example, when the chassis 3 is made of metal, the

extended portions

6a and 7a formed by extending the side surfaces of the chassis 3 generally have a large thermal contraction in the in-plane direction. For this reason, the clearance between the contact surface portions 6b-3 and 6b-4 and the contact surface portions 7b-1 and 7b-2 have a certain clearance in consideration of thermal contraction in the in-plane direction of the extending

portions

6a and 7a. It is necessary to provide.

In this case, conventionally, the left and right sides of the chassis 3 are rotated up and down within the panel 4 by the clearance, but in the present invention, the extending portion 6a is made thick by the contact surface portion 6b-1 and the inner wall portion 6b-2. The movement (turning) of the chassis 3 is restricted by being sandwiched in the direction, and the positioning accuracy can be improved.
Therefore, the influence of shakiness of the chassis 3 and the panel 4 after assembly on the connection between the board 5 and the panel board 4a by the board-to-

board connectors

5a and 5b can be remarkably reduced.

Further, since the thermal contraction in the thickness direction of the extended portion 6a is generally smaller than that in the in-plane direction, the thickness of the extended portion 6a is sandwiched between the contact surface portion 6b-1 and the inner wall portion 6b-2. By doing so, positioning with higher accuracy can be realized.

When the chassis 3 and the panel 4 are fixed by screwing, as shown in FIG. 7, the screws 8 are inserted into the insertion holes 3a provided in the extending

portions

6a and 7a and the insertion holes 4c provided on both side surfaces of the panel 4, respectively. Is inserted and fixed with screws. In this configuration, since the contact portion 6b-1 and the inner wall portion 6b-2 for positioning the panel 4 in the horizontal direction are not formed in the positioning portion 7b, the slit 4d is formed around the insertion hole 4c on the positioning portion 7b side. Provide. By this slit 4d, the peripheral portion (attachment member 4A) of the insertion hole 4c can be bent by screwing with the screw 8 inserted through the insertion hole 4c. That is, flexibility is given to the side opposite to the side positioned by the contact surface portion 6b-1 and the inner wall portion 6b-2.

With this configuration, for example, when the chassis 3 expands and the clearance decreases, the attachment member 4A bends in response to the expansion, so that the influence of the expansion is absorbed and stress concentration on the screwing portion. Is avoided. Similarly, even when the chassis 3 contracts and the clearance increases, the attachment member 4A bends in response to the contraction, so that the influence of the contraction is absorbed.

Next, a specific aspect of the electronic device according to the first embodiment will be described.
FIG. 8 is a perspective view illustrating a specific aspect of the electronic device according to the first embodiment, in which FIG. 8A is a front view and FIG. 8B is a rear view. The example of FIG. 8 shows a case where the present invention is applied to an in-vehicle audio device that reproduces music data recorded on a disc.
That is, as shown in FIGS. 9 and 10, the acoustic device 1 shown in FIG. 8 has a panel positioning structure including extending

portions

6a and 7a on the chassis 3 side and

positioning portions

6b and 7b on the panel 4 side. The panel 4 is directly assembled to the chassis 3.

As shown in FIG. 11A, the extending portion 6a in the acoustic device 1 of FIG. 8 has a configuration in which the chassis side surface perpendicular to the panel assembly surface opened in the chassis 3 is partially extended and the end portion thereof is bent. It has become. Even the extended portion 6a having the end bent in this manner is positioned in the direction perpendicular to the extended portion 6a by being sandwiched and held in the thickness direction by the contact surface portion 6b-1 and the inner wall portion 6b-2. be able to. Further, as shown in FIGS. 11 (a) and 11 (b), the extended portion 6a is also sandwiched in the direction (vertical direction) perpendicular to the thickness direction by the contact surface portions 6b-3 and 6b-4, It is positioned in a direction (vertical direction) parallel to the extending portion 6a.

As shown in FIG. 12A, the extending portion 7a in the acoustic device 1 of FIG. 8 also extends a side surface (side surface opposite to the side surface on which the extending portion 6a is provided) orthogonal to the panel assembly surface opened in the chassis 3. It has a configuration in which the end is bent. As shown in FIG. 12A, such an extended portion 7a is also sandwiched in the direction (vertical direction) perpendicular to the thickness direction by the contact surface portions 7b-1 and 7b-2, and is parallel to the extended portion 7a. Positioning in the vertical direction.

Also in the acoustic device 1 of FIG. 8, as shown in FIG. 12B, screws 8 are inserted into the insertion holes 3 a provided in the extending

portions

6 a and 7 a and the insertion holes 4 c provided on both side surfaces of the panel 4. It is inserted and fixed with screws. In the case of FIG. 12B, slits 4d-1 to 4d-3 are formed in the attachment member 4A and its periphery. By these slits 4d-1 to 4d-3, the mounting member 4A can be bent by screwing with the screw 8 inserted through the insertion hole 4c. Thereby, even when the chassis 3 and the panel 4 are thermally expanded or contracted, the influence can be mitigated.

As described above, according to the first embodiment, the extending portion 6a formed by extending the side surface orthogonal to one side surface of the chassis 3 and the extending portion 6a provided orthogonal to one side surface of the chassis 3 are provided. An extended portion 7a formed by extending a side surface opposite to the side surface, a contact surface portion 6b-1 and an inner wall portion 6b-2 provided on the panel 4 for positioning the extended portion 6a in the thickness direction thereof, Contact surfaces 6b-3 and 6b-4 which are provided on the panel 4 and are positioned by sandwiching the extended portion 6a in a direction perpendicular to the thickness direction, and provided on the panel 4 and the extended portion 7a is perpendicular to the thickness direction. And contact surface portions 7b-1 and 7b-2 for positioning by being sandwiched in any direction.
With this configuration, even if a clearance is provided in the dimensions of the chassis 3 and the panel 4, the vertical movement of the panel 4 can be performed by the contact surface portions 6b-3 and 6b-4 and the contact surface portions 7b-1 and 7b-2. Since the movement of the panel 4 in the horizontal direction is restricted by the contact surface portion 6b-1 and the inner wall portion 6b-2, the positioning accuracy of the panel 4 can be improved with a simple configuration.

Further, according to the first embodiment, the mounting member 4A provided with the insertion hole 4c provided in the panel 4 and through which the screw 8 for screwing the extending portion 7a to the panel 4 is formed, and the mounting member 4A. Since it is provided with the slit 4d that bends the attachment member 4A by screwing with the screw 8 inserted through the insertion hole 4c, the influence of thermal expansion or thermal contraction of the chassis 3 and the panel 4 can be mitigated.

Furthermore, according to this Embodiment 1, since the electronic device 1 is provided with the above-mentioned panel positioning structure, the electronic device which can obtain the effect similar to the above can be provided.

In the present invention, any component of the embodiment can be modified or any component of the embodiment can be omitted within the scope of the invention.

Since the panel positioning structure according to the present invention can improve the panel positioning accuracy with a simple configuration,

1 Electronic device, 2 cover, 3 chassis, 3a, 4c insertion hole, 4 panel, 4a panel board, 4b front chassis, 4d, 4d-1 to 4d-3 slit, 4A mounting member, 5 board, 5a, 5b board to board Connector, 6a, 7a extension, 6b, 7b positioning part, 6b-1, 6b-3, 6b-4, 7b-1, 7b-2 contact surface part, 6b-2 inner wall part, 8 screws.

Claims

In a structure for assembling a panel on one side of a box-shaped chassis, in a panel positioning structure for positioning the panel relative to one side of the chassis,
A first extending portion formed by extending a side surface orthogonal to one side surface of the chassis;
A second extending portion formed by extending a side surface orthogonal to one side surface of the chassis and facing the side surface provided with the first extending portion;
A first positioning portion provided on the panel and sandwiching and positioning the first extending portion in a thickness direction of the first extending portion;
A second positioning portion provided on the panel and sandwiching and positioning the first extending portion in a direction perpendicular to the thickness direction of the first extending portion;
A panel positioning structure, comprising: a third positioning portion that is provided on the panel and sandwiches and positions the second extending portion in a direction perpendicular to the thickness direction of the second extending portion.
A mounting member provided in the panel, and having an insertion hole through which a screw for screwing the second extending portion to the panel is formed;
The panel positioning structure according to claim 1, further comprising: a slit formed on the mounting member and bent by a screw with a screw inserted through the insertion hole.
An electronic device comprising the panel positioning structure according to claim 1.