JP2003060366A - Sub-board mounting oriented chassis plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a sub-board mounting oriented chassis plate which is safe and has proper workability, when withdrawing the sub-board with single hand. SOLUTION: A fastening claw 21 is provided in the vicinity of a corner of a sub-board mounting oriented chassis plate 20 for mounting a sub-board 3 on a housing 1 of a sub-rack, etc. The engaging claw 21, protruded in the direction of inserting the sub-board, is turned by the corner portion of the inserted sub-board in the unpreventable direction of inserting the sub-board, and the claw 21 is moved at the outside of the side-end portion of the sub-board. When withdrawing the sub-board from the housing 1, the claw 21 is located so as to prevent the movement of the chassis plate 20. Thereby, the pull out of the chassis plate 20 is prevented, when withdrawing the sub-board from the housing 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sub-board mounting chassis plate used for a subrack of a communication device or the like.

[0002]

2. Description of the Related Art A conventional example of this type of sub-board mounting chassis plate is shown in FIG. 8 is a side view showing a conventional example, FIG. 9 is a side view showing a conventional chassis plate, and FIG. 10 is a side view showing a state when a conventional sub-board is pulled out.

In FIG. 8, reference numeral 1 is a housing such as a subrack. 2 is a chassis plate, and two sub-boards 3 (3
a, 3b) can be mounted. In addition, the sub-board 3 is manufactured to be approximately half the size of a normal board.
Reference numerals 4a and 4b denote a plurality of guide rails, which are provided on the housing 1 and guide the insertion when the chassis plate 2 is assembled to the housing 1.

As shown in FIG. 9, the chassis plate 2 comprises a panel 5 and a plurality of rail portions 6a to 6d for guiding the insertion of the sub-board 3. Reference numeral 7 denotes a guide portion, which is formed by bending around both corners in the vicinity of the insertion portions of the sub-boards 3a and 3b of the panel 5 of the chassis plate 2,
It assists the positioning of the sub-board 3 in the initial stage of insertion.

Reference numeral 8 denotes a flange portion, which is formed by bending both sides of the panel 5 of the chassis plate 2 and the like, and the connector 9 provided on the sub-board 3 is attached to the back panel 10 attached to the back side of the housing 1. Fixed connector 1 provided
The chassis plate 2 is positioned so that it can be easily inserted into the chassis 1. Reference numeral 12 denotes a protrusion, which fits into a hole 13 provided in the back panel 10 to position the chassis plate 2.

When the sub-board 3 is mounted on the housing 1 in the above-mentioned structure, it is carried out as follows. First, the chassis plate 2 is inserted into the guide rails 4a and 4b of the housing 1, the chassis plate 2 is pushed along the guide rails 4a and 4b, and the protrusions 12 are fitted into the holes 13 of the back panel 10 to be attached.

Next, the sub-board 3a is inserted from the guide portion 7 provided on the chassis plate 2, and the sub-board 3a
By pushing along 6b, the connector 9 is inserted into the fixed connector 11 of the back panel 10 and mounted. Sub-board 3 is 1
If only one is mounted, this completes the mounting work,
When it is necessary to mount the second sub-board 3b, the sub-board 3b is pushed along the rail portions 6c and 6d to mount the sub-board 3b as in the case of the sub-board 3a.

When pulling out the sub-board 3 mounted in this way, in FIG. 10, the case 1 is held with one hand so that the case 1 does not move, and the end of the sub-board 3a is held with the other hand. The sub-board 3a is pulled out and pulled out. The same applies when pulling out the sub-board 3b.

[0009]

However, in the above-mentioned conventional technique, when the sub-board 3a is pulled out, it is necessary to hold the housing 1 with one hand and perform the pulling-out work with the other hand. By the frictional force between the board 3a and the rail portions 6a and 6b of the chassis plate 2, the chassis plate 2
Receives a force in a direction in which the sub-board 3a comes out and the chassis plate 2 also comes out together with the sub-board 3a.
However, if both of them come out due to the frictional force with the rail portions 6c and 6d, the workability is extremely poor, such as re-inserting the chassis plate 2 and the sub-board 3b.

If the chassis plate 2 is pressed instead of pressing the chassis 1 in order to prevent the chassis plate 2 from slipping out, the chassis 1 is not stable when the sub-board 3 is pulled out, which is a safety hazard. There was also a problem that it would occur. Therefore, an object of the present invention is to realize a chassis board for mounting a sub-board which is safe and has good workability even when the sub-board is pulled out with one hand.

[0011]

In order to solve the above-mentioned problems, the present invention provides a sub-board mounting chassis plate for mounting a sub-board in a housing in the vicinity of one corner of the sub-board insertion portion. A locking claw is provided, and the locking claw protruding in the insertion direction of the sub-board is moved to the outside of the side end of the sub-board by rotating it in a direction that does not hinder the insertion of the sub-board by the corner of the sub-board to be inserted. It is characterized in that it is positioned so as to prevent movement of the chassis plate when the sub-board is pulled out.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a sub-board mounting chassis plate according to the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a mounted state of a chassis plate according to an embodiment of the present invention, FIG. 2 is an enlarged view of part A of FIG. 1, FIG. 3 is a view taken in the direction of arrow B of FIG. 2, and FIG. 4 is a chassis plate of the present invention. 6 is a side view showing a sub-board mounted state of FIG. 5, FIG. 5 is an enlarged view of a C portion of FIG. 4, and FIG.
Is a view taken in the direction of arrow D in FIG. 5, and FIG. 7 is a perspective view of FIG.

The same parts as those of the above-mentioned conventional example are designated by the same reference numerals, and the description thereof will be omitted. In FIG. 1, 20
Is a chassis plate, and one corner 2a of the insertion part of the sub-board 3
A locking claw 21 is provided in the vicinity of. This locking claw 21
2, is substantially rotatably locked to a shaft 22 fixed to the chassis plate 20 and has a vertex on the shaft 22 side.
It is shaped like an equilateral triangle.

Reference numeral 23 is a substantially trapezoidal or fan-shaped opening provided in the locking claw 21. A stopper plate 24 is formed by bending a part of the panel 25 of the chassis plate 20 and is inserted into the opening 23 of the locking claw 21. The surface 23a of the opening 23 of the locking claw 21 comes into contact with the stop plate 24 by gravity, and is supported by the shaft 22 and the stop plate 24.
The corner 21a of the locking claw 21 is guided by the guide groove 26 of the rail 6a.
It has stopped at the position where it blocks a.

The stopper plate 24 may be formed by a columnar pin, a spring pin, or the like formed in the panel 25 by a joining means such as press-fitting or welding, and stops the locking claw 21 in cooperation with the shaft 22. The function is not limited to the above example as long as it has a function. Reference numeral 27 is a slit plate provided on the front surface of the housing 1, and is provided with a notch portion 28 as shown in FIG. 7 so as not to interfere with the insertion of the flange portion 8 of the ordinary substrate or chassis plate 20. The operation of the above-described configuration will be described below.

In FIG. 4, when the sub-board 3a is inserted into the chassis plate 20 assembled in the housing 1, the locking claw 21
Is projected in the insertion direction of the sub-board 3a,
The corners 30a of the sub-board 3a come into contact with the corners 21a of the locking claws 21 to spread the locking claws 21, and the locking claws 21 are inserted around the shaft 22 as shown in FIG. Is rotated in the direction that does not hinder the movement (the direction of arrow E) to move to the outside of the side end of the sub-board 3a.

At this time, the opening 23 of the locking claw 21 is opened to such a size that the stopper plate 24 does not come into contact with the surface 23b of the opening 23, and the locking claw 21 is pulled out when the sub-board 3a is pulled out. When the chassis plate 20 moves in the direction of coming out, the chassis plate 20 comes into contact with the slit plate 27 and stops at a position that prevents the movement. When the sub-board 3a is pushed further along the rail portions 6a and 6b in this state, the connector 9 of the sub-board 3a is inserted into the fixed connector 11 of the back panel 10, and the mounting work of the sub-board 3a is completed.

When the sub-board 3a is to be pulled out, the housing 1 is pressed with one hand and the end of the sub-board 3a is pulled with the other hand to pull out the sub-board 3a. At this time, even if the frictional force between the sub-board 3a and the rail portions 6a and 6b of the chassis plate 20 generates a force in the direction of slipping out of the chassis plate 20, the locking claws 21 are locked by the side ends of the moving sub-board 3a. Since it is in a position where it abuts on the slit plate 27 and is apart from the notch 28 provided in the slit plate 27 as shown in FIG. 6, the end 21b of the locking claw 21 contacts the slit plate 27. To prevent the chassis plate 20 from coming out.

When the sub-board 3a is further pulled out and the sub-board 3a is removed from the housing 1, the locking claw 21 rotates about its axis 22 by its own weight and abuts the stop plate 24 to stop at the original position. To do. The above description has been made in the case where the locking claw 21 is provided only on one corner 2a of the chassis plate 20, but a similar locking claw 21 is provided on the other corner 2b of the chassis plate 20 shown in FIG. May be provided in the vicinity of, and the locking claws may be provided in the vicinity of both corners of the insertion portion of the sub-board 3 of the chassis plate 20.

With this arrangement, when the chassis plate 20 is mounted vertically as shown in FIG. 1, when the chassis plate 20 is inserted into the housing 1, the lower locking claw is rotated. Since the shape is a substantially isosceles triangle with the central axis as the apex, the hypotenuse is inserted into the lower slit plate 27 of the housing 1 while being in contact, and one side of the opening is stopped by its own weight after the insertion. And stops at a position that prevents the chassis plate 20 from coming off, and does not project in the insertion direction of the sub-board 3b.

The sub board 3b is attached to the chassis plate 20 as described above.
When is inserted, the outside of the side end portion of the sub-board 3b is pushed in while being substantially in contact with the oblique side of the locking claw, and the sub-board 3b is mounted. When this is pulled out, it is possible to prevent the chassis plate 20 from coming out when pulling out the sub-board 3 regardless of which side is mounted when only one sub-board 3 is mounted. The effect of is obtained.

Further, in the case of the horizontal mounting posture, even if the locking claw is projected in the inserting direction of the sub-board 3, only the frictional force between the shaft and the locking claw is resistance, and Can easily rotate at the corners of the sub-board 3 and move to the outside of the side end of the sub-board 3, so that it does not hinder the assembly work of the chassis plate, and the locking claws are inserted after the sub-board 3 is inserted. Is in the same state as in the above embodiment, and the same effect as that in the above embodiment can be obtained.

A portion where gravity cannot be used, for example, near the other corner 2b shown in FIG. 1 or the chassis plate 2
When the locking claw of the present invention is applied when the mounting position of 0 is horizontal, the opening 23 of the locking claw 21 shown in FIG.
By installing a spring member such as a coil spring or a torsion spring that exerts a biasing force at least enough to lift the own weight of the locking claw between the surface 23b of the base plate and the stop plate 24, the same effect as that of the above embodiment is exhibited. be able to. In addition, when the chassis plate 20 is removed from the housing 1, the locking claws are prevented from coming into contact with the housing, and a smooth removal work can be performed.

Further, in this case, the guide portion 7 is removed, but the rail portions 6a to 6 are not required even if the guide portion 7 is not assisted.
The sub-board 3 may be inserted using the guide grooves 26a to 26d provided in d as guides, and there is no inconvenience during insertion.

[0025]

As described above, the present invention provides the sub-board mounting chassis plate with the locking claws for preventing the chassis plate from coming out when the sub-board is pulled out.
Even if the housing is pressed with one hand and the sub-board is pulled out with the other hand, the chassis plate 20 does not come out together with the sub-board, and as a result, the other sub-board does not come out, so that workability is improved. It is possible to obtain an effect that it is improved and a safe pulling out work can be performed.

[Brief description of drawings]

FIG. 1 is a side view showing an attached state of a chassis plate according to an embodiment of the present invention.

FIG. 2 is an enlarged view of part A of FIG.

FIG. 3 is a view on arrow B of FIG.

FIG. 4 is a side view showing a sub-board mounted state of the chassis plate of the present invention.

5 is an enlarged view of part C in FIG.

FIG. 6 is a view on arrow D in FIG.

FIG. 7 is a perspective view of FIG.

FIG. 8 is a side view showing a conventional example.

FIG. 9 is a side view showing a conventional chassis plate.

FIG. 10 is a side view showing a state when the conventional sub-board is pulled out.

[Explanation of symbols]

1 case 2,20 chassis plate 2a, 2b corner 3 sub board 4a, 4b Guide rail 5,25 panels 6a-6d Rail part 7 Guide section 8 Flange 9 connectors 10 back panel 11 Fixed connector 21 Locking claw 23 opening 24 stop plate 26a-26d Guide groove 27 slit plate 28 Notch 30a corner

Claims (4)

[Claims] 1. A sub-board mounting chassis plate for mounting a sub-board on a housing, wherein a locking claw is provided in the vicinity of one corner of the insertion part of the sub-board of the chassis plate to insert the sub-board. The locking claws protruding in the direction are rotated in a direction that does not hinder the insertion of the sub-board by the corners of the sub-board to be inserted and moved to the outside of the side end of the sub-board, and when the sub-board is pulled out, the chassis plate A chassis board for mounting a sub-board, which is positioned so as to prevent the movement of the board. 2. The chassis board for sub-board mounting according to claim 1, wherein the locking claws are provided near the one corner and near the other corner facing the one corner. 3. The shaft and the stop plate are provided on the chassis plate, the locking claw is rotatably locked to the shaft, and the opening is provided in the locking claw according to claim 1. A chassis board for sub-board mounting, wherein the stopper plate is inserted. 4. The spring member according to claim 3, wherein a spring member is attached to the locking claw, and the spring member is stopped so as to stop at a position where a guide groove of a rail portion provided on the chassis plate is closed before the sub-board is inserted. Chassis board for sub-board mounting, characterized by exerting urging force.