JPH0711497Y2 - Electronic device housing with built-in unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to an electronic device housing with a built-in unit, in which the unit can be easily put in and taken out from the unit housing case, and moreover, the unit inserted into the unit housing case. The present invention relates to a unit-equipped electronic device housing capable of preventing the electronic device from floating inside the unit housing case.

"Prior art" Conventionally, in order to facilitate inspection and maintenance, electric circuits or electronic circuits are partly built into a box-shaped case and provided on a wiring board, etc. to suit the use of each electronic device. There is also a unit configured to be inserted into a unit housing case and connected to an electric circuit in the housing.

For example, as shown in FIGS. 5 and 6, a box-shaped unit 101 containing an electric circuit or an electronic circuit is attached to a chassis 102.
It is inserted from the opening 104 opened to the chassis 102 into the unit housing case 103 fixed to the inside of the unit housing case 103, and is connected to other circuit parts via the connector 105 for connection provided on the rear surface of the unit housing case 103. Composed.

The unit housing case 103 covers the upper, lower, left, right, and rear five surfaces of the unit 101, and the opening 104 formed in the chassis 102 is covered with a lid 106.

[Problems to be Solved by the Invention] In the above-mentioned conventional example, in order to facilitate the insertion of the unit 101 into the unit housing case 103, for example, as shown in FIG. A relatively large play gap 107 is formed between the gap 103 and 103.
Therefore, the unit 101 floats in the unit housing case 103 during transportation after the unit 101 is inserted into the unit housing case 103, the connection with the connector 105 is disconnected, and the circuit inside the unit 101 and the circuit inside the housing are disconnected. Will not be electrically connected and will not operate properly during use.

On the contrary, as shown in FIG. 7, it is conceivable to narrow the clearance 107 between the unit 101 and the unit housing case 103 to such an extent that the unit 101 does not move within the unit housing case 103. Has a limit in reducing the play space because it is necessary to consider the manufacturing dimensional error of the unit 101 and the unit storage case 103. Further, if the play space is narrowed, the outer surface of the unit 101 and the unit storage case 103 are reduced. There arises a problem that it becomes difficult to take the unit 101 in and out because the inner surface rubs against each other or the unit 101 is messed up in the unit housing case 103.

That is, there are contradictory requirements that facilitating the putting in and taking out of the unit and preventing the unit from moving in the unit housing case demand one of the units and the other one is not satisfied.

The present invention has been made in view of the above circumstances, and has a built-in unit that satisfies the contradictory requirements of facilitating the insertion / removal of a unit into / from the unit housing case and preventing the floating of the unit in the unit housing case. An object is to provide an electronic device housing.

[Means for Solving the Problems] The present invention is to fix a unit housing case that covers the upper, lower, left, right, and rear five sides of a box-shaped unit containing an electric circuit or an electronic circuit to the inside of the chassis to fix the unit housing case. In order to achieve the above object, in the unit-equipped electronic device housing having the lid for covering the opening formed in the chassis on the front surface of the unit housing case while fixing the unit connection connector to the rear wall, I am taking steps.

That is, a rib protruding upward is provided on the lower wall of the unit housing case, springs projecting inside the upper wall of the unit housing case and on the inside of each of the left and right side walls are provided, and a presser for elastically pushing the unit backward is provided on the inner surface of the lid. Provide a spring.

"Operation" In the present invention, when the unit is taken in and out,
Since the springs provided on the upper wall and the left and right side walls of the unit housing case can be elastically deformed to greatly utilize the play between the unit and the unit housing case, the unit can be easily taken in and out. The unit inserted into the unit housing case is elastically supported in the left-right direction by springs provided on the left and right side walls of the unit housing case, and vertically in the vertical direction by springs provided on the upper wall of the unit housing case. Since it is pressed against the ribs on the wall and is pressed against the connector on the rear side by a pressing spring provided on the inner surface of the lid in the front-rear direction, movement in the left-right, up-down, and front-rear directions is prevented.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 4, a unit-shaped electronic device casing in which a box-shaped unit 1 containing an electric circuit or an electronic circuit is inserted into the front surface (or rear surface) of a chassis 2 from the front (or rear) thereof. The body is provided. The unit-equipped electronic device housing is fixed to the inside of the chassis 2, and includes a unit housing case 3 that covers the upper, lower, left, right, and rear five surfaces of the unit 1 with a gap 11 of an appropriate size, and a unit housing case 3 And a lid 6 that covers the opening 4 formed in the chassis 2 on the front side of the. A unit connection connector 5 is fixed to the rear surface of the unit housing case 3.

The lower wall 3a of the unit housing case 3 is formed of a part of the lower wall of the chassis 2, and protrudes upward, and three ribs 7 extending in the front-rear direction are stamped out by pressing, and the left and right walls of the unit housing case 3 are formed. A pair of front and rear springs 8 are provided on the front and rear sides 3b and 3c at appropriate intervals. In addition, springs 8 are also provided at four positions on the front and rear and right and left of the upper wall 3d of the unit housing case 3 with appropriate intervals. These springs 8 are bent in a dogleg shape whose central portion in the front-rear direction projects inside the unit housing case 3.

Further, a presser spring 9 for elastically pressing the unit 1 backward is provided at two positions on the left and right of the inner surface of the lid 6 at appropriate intervals.

The lid 6 is fixed to the chassis 2 with a pair of left and right screws 10.

In this unit accommodating case 3, when the unit 1 is put into and taken out of the unit accommodating case 3 through the opening 4, the springs 8 provided on the unit accommodating case 3 and the left and right walls 3b to 3d are elastically deformed. Since the play 11 between the unit 1 and the unit housing case 3 can be widely used, the unit 1 can be easily taken in and out of the unit housing case 3.

On the other hand, the lateral movement of the unit 1 inserted in the unit housing case 3 is suppressed by sandwiching the unit 1 by the springs provided on the left and right surfaces 3b and 3c of the unit housing case 3. . Further, the vertical movement of the unit 1 is suppressed by pressing the unit 1 against the rib 7 of the lower surface 3a by a spring provided on the upper surface 3d of the unit housing case 3. Further, the back-and-forth movement of the unit 1 is suppressed by pressing the unit 1 against the rear connector 5 with the pressing spring 9 provided on the inner surface of the lid 6. Therefore, during transportation after the unit 1 is inserted, the unit 1 may move in the unit housing case 3 in the vertical direction.
Since it can be suppressed in the left-right direction and the front-rear direction, it is possible to prevent the unit 1 from being detached from the connector 5 and from causing a defect in a circuit in the unit 1.

Note that guide ribs 12b and 12c projecting from the left and right side walls of the unit 1 are engraved on the left and right side walls 3b and 3c of the unit housing case 3 in order to facilitate the loading and unloading of the unit 1 into and from the unit housing case 3. A guiding hand-holding recess 14 is provided at the front end of the unit 1 for guiding the grooves 13b and 13c.

Further, in the above-described embodiment, the spring 8 is formed by punching a part of each of the left and right side walls 3b and 3c or the upper wall 3d of the unit housing case 3 into the unit housing case 3 by pressing. These springs 8 are formed separately from the unit housing case 3,
It is also possible to fix it by spot welding, rivets, bolts and nuts, etc.

[Advantage of Invention] As described above, according to the present invention, the springs are projected to the inside of the left and right side walls and the upper wall of the unit housing case, and the springs are pressed through the unit when the unit is inserted. Since the floating space of the unit can be enlarged in the unit housing case, the unit can be easily taken in and out of the unit housing case.

Also, by pressing the unit inserted in the unit housing case with the springs on both the left and right sides of the unit housing case and the upper spring, it is possible to prevent the unit from floating in the unit housing case, and the unit may come off the connector or inside the unit. It is possible to prevent a malfunction of the circuit.

[Brief description of drawings]

FIG. 1 is a front view of a unit housing case according to an embodiment of the present invention, FIG. 2 is a perspective view of the chassis outside obliquely from above, and FIG. 3 is a perspective view of the chassis inside obliquely from above, and FIG. Is a cross-sectional plan view thereof, FIG. 5 is a front view of a unit accommodating case according to one conventional example, FIG. 6 is a cross-sectional plan view of a conventional unit accommodating case, and FIG. 7 is a unit accommodating case according to another conventional example. It is a front view. 1 ... Unit 2 ... Chassis 3 ... Unit accommodation case 3a ... Lower wall 3b ... Left side wall 3c ... Right side wall 3d ... Upper wall 4 ... Opening 5 ... Connector 6 ... Lid 7 ... Rib 8 ... Spring 9 ... Presser spring 11 ... Free play Gap

Claims (1)

[Scope of utility model registration request] 1. A unit accommodating case for covering the upper, lower, left, right, and rear five surfaces of a box-shaped unit containing an electric circuit or an electronic circuit is disposed inside a chassis, and a unit connecting connector is provided on a rear wall of the unit accommodating case. On the other hand, in the unit-equipped electronic device housing having a lid that covers the opening formed in the chassis on the front surface of the unit housing case, a rib protruding upward is provided on the lower wall of the unit housing case, An electronic device housing with a built-in unit, characterized in that springs projecting inside the upper wall and left and right side walls are provided, and a holding spring for elastically pressing the unit backward is provided on the inner surface of the lid.