JP2002141683A - Substrate pulling-out structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem where a connector or the like is possible to be broken due to bad workability when a substrate engaging with a connector is pulled out using a thumb screw. SOLUTION: There are provided a connection bracket 4 provided to each substrate 9, a pulling-out lever 10 which is rotatably held near a back board 17 and jointed to the connection bracket 4, and a thumb screw 15 with which a front plate 14 is fixed to a guide rail front part 5 at fixing the substrate while it is jointed to the connection bracket 4 through a joint part 6 at pulling- out the substrate. The thumb screw 15 is pressed to rotate the pulling-out lever 10 through the connection bracket 4 so that the substrate 9 is pushed forward, and the connector engagement between the substrate 9 and the back board 17 is released to allow pulling out of the substrate 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for removing a substrate from an electronic device.

[0002]

2. Description of the Related Art Conventionally, two patterns are generally used as a substrate removing structure. FIG. 13 is a perspective view showing a first conventional example.

The unit 41 has an upper guide rail 42 and a lower guide rail 43, and upper and lower guide rails 42, 43.
The board 44 is inserted between the connectors, and a connector (not shown) on the back board 45 and a connector (not shown) of the board 44 are fitted to each other.

[0004] A front plate 49 on which electric components such as a removal lever 46, a connector 47 and an indicator lamp 48 are arranged is attached to the substrate 44 by screws (not shown). When the substrate 44 is removed from the unit 41, the lever 46 is rotated and the guide rails 42 and 43 are used as fulcrums to pull out the substrate.

FIG. 14 is a perspective view showing a second conventional example. In a unit 51 having the same structure as that of FIG.
The board 54 is screwed and fixed to the guide rail portion by the thumb screw 53 attached to the guide rail.

When the substrate 54 is removed, the thumb screw 5
3 is loosened, the substrate 54 is removed from the guide rail, and the thumb screw 53 is pulled out in the direction of the arrow as it is.

[0007]

However, FIG.
In the apparatus having the structure (1), the front plate 49 must be cut out by the space of the extraction lever 46 attached to the substrate 44, so that the shape of the front plate 49 is complicated, and the front plate 49 is arranged on the front plate 49. The area of the electrical components such as the connector 47 and the display lamp 48 is reduced, and a problem arises in that the connector and the display lamp in the specification cannot be arranged.

In addition, since the space for the lever 46 is cut off at the front plate with respect to the electromagnetic shield and the electric field shield, shield parts such as shield fingers cannot be attached, so that the area is vacant and the shield characteristics deteriorate. The problem of doing so also arises.

In the apparatus having the structure shown in FIG. 14, the thumb screw 53 takes up less area than the lever 46 as compared with the apparatus having the structure shown in FIG. In addition, the shield finger 54 is attached to the front plate 52 and the shape is simple, and the shield characteristic can be prevented from deteriorating by attaching the shield finger 54 to the front plate 52 and making contact with the guide rail fitting.

However, when removing the substrate 55, the thumb screw 53 is used to hold the substrate 55 and the back board 5.
Since the connector (6) (not shown) must be forcibly pulled out, the workability is extremely poor. In addition, the connector (not shown) fitted on the back board 56 unless it is pulled out horizontally. There is a problem in that the parts are stressed and the connectors may be damaged.

If the connector has a large number of cores and the fitting force is strong, the stopper of the front plate 52 holding the thumbscrew 53 is broken during the pulling with the thumbscrew 53, and the board 55 Screw 53
However, there is also a problem that only one part comes off.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a connecting member provided for each substrate, an extraction lever rotatably held near a backboard and joined to the connecting member, and a substrate. When fixed, the front plate is fixed to the front surface of the guide rail, and when the board is removed, a thumb screw or a thumb screw to be joined to the connection fitting via a joint component and a push button fitted in the hollow portion thereof are provided, and a thumb screw or a push button is provided. By pressing, the removal lever rotates through the connection fitting to push the board forward, and the board and the backboard are disengaged from the connector and the board can be pulled out.

[0013]

FIG. 1 is a perspective view showing a first embodiment of the present invention, wherein FIG. 1 (a) is an overall view and FIG. 1 (b) is a partially enlarged view.

As shown in FIG. 1A, the unit 1 has an upper guide rail 2 and a lower guide rail 3, and a connecting bracket 4 is provided on the same row as one of the upper, lower, upper and lower guide rails. Have been. Therefore, the connection fitting 4 corresponds to each board 9 inserted between the upper guide rail 24 and the lower guide rail 3.

A front plate 14 is fixed to the substrate 9 by screws or the like, and a thumb screw 15, a shield finger 16, electric components, and the like are attached to the front plate 14.

Further, the substrate 9 is composed of upper and lower guide rails 2 and 3.
When the connector is inserted between the connectors, a connector (not shown) on the back board 17 and a connector (not shown) on the board 9 are fitted to each other as in the related art, and the board 9 is fixed to the back board 17.

As shown in FIG. 2B, one end of the connecting bracket 4 is held on the front surface 5 of the guide rail via a joint 6 and a coil spring 8, and the other end is rotatably held near the back board 17. To the extraction lever 10.

FIGS. 2A and 2B are perspective views showing the front side and the back side of the connection fitting. FIG. 2A is an exploded view of a portion A in FIG. 1B, that is, the front side of the connection fitting, and FIG. Part B), that is, an exploded view of the back side of the connection fitting.

On the front side, as shown in FIG.
Are joined to the joint component 6 at the guide rail front surface 5, and are held via a coil spring 8 in a hole 7 provided on the guide rail front surface 5.

On the back side, as shown in FIG.
The pulling lever 10 is rotatably held by a pulling lever 12 or the like on a pulling lever holding portion 11 provided on the back side of the guide rail. The extraction lever 10 is provided with a concave portion 13 and is joined to the connection fitting 4.

FIG. 3 is a diagram showing a thumb screw and a moving hole.
(A) is a side view of a thumb screw, (b) is a front view of a moving hole.

As shown in FIG. 1A, a thumb screw 15 is attached to the front plate 14 attached to the substrate 9, and the thumb screw 15 is attached to the section 1 as shown in FIG.
A step is formed by the section 5a, the section 15b, the section 15c, and the threaded portion 15d, and the step is attached to the front plate 14 via the stopper 18.

Front plate 14 to which thumbscrew 15 is attached
In the corresponding part, two holes, a hole φX1 and a hole φX2, have a width Z.
A moving hole 19 is formed by being connected by a single line.
The moving hole 19 is formed so as to fit within the outer shape of the thumb screw 15.

The thumb screw 15 engages the section 15a and the section 15b in the moving hole 19, and particularly, the section 1
When 5b is engaged, it becomes possible to move from the hole φX1 to the hole φX2 through the width Z as described later.

4 to 7 are views for explaining the operation of the first embodiment. FIG. 4 shows a state in which the substrate is fixed, and FIG.
(A) is a view from the side, (b) is a view from the front,
(C) is a figure which shows the relationship between the cross section of a thumbscrew, and a moving hole.

FIG. 5 is a view showing a state in which the thumb screw is removed.
FIG. 6 is a view showing a state where the thumb screw and the joint part are joined, FIG. 7 is a view showing a state where the substrate is removed, and FIG. 6D is an enlarged view showing a part of the joint part.

When the board 9 is inserted into the unit 1 as shown in FIG. 1, a connector (not shown) of the back board 17 and a connector (not shown) of the board 9 are fitted to each other.
As shown in (b), the substrate 9 is fixed by screwing a screw hole provided on the front surface 5 of the guide rail and the thumb screw 15. At this time, the thumb screw 15 has the section 15a corresponding to the hole φX1 of the moving hole 17 of the front plate 14 as shown in FIG.
In the position.

Next, the operation of removing the substrate will be described with reference to FIGS.

In FIG. 5 (a), the thumb screw 15 is loosened, and the hole diameter of the stopper 18 of the thumb screw 15 is smaller than the diameter of the section 15c of the thumb screw 15, so that the stopper 18 comes off from the thumb screw 15. Therefore, the stopper 18 is pulled in the direction of the arrow C until the stopper 18 stops at the inner surface of the front plate 14, and then the lower section 15b of the thumbscrew 15 is moved through the area of the width Z of the moving hole 19 as shown in FIG. Move by a distance Y in the direction of D. As a result, the connection fitting 4 and the thumb screw 15 are positioned coaxially.

In FIG. 6C, the section 15a of the thumbscrew 15 is located at the position of the hole φX2 of the moving hole 19, as shown in FIG.
As shown in (1), the screw portion 15d of the thumb screw 15 is joined to the joint component 6 by being pushed in the direction of arrow E.

In FIG. 7A, when the thumb screw 15 is pushed in the direction of arrow F, the joint component 6 is pushed as shown in FIG.
While compressing the coil spring 8, the connecting fitting 4 rotates the extraction lever 10 counterclockwise to push the substrate 9 forward as shown in FIG.
The connector 9 (not shown) is removed from the connector 7 so that the board 9 can be pulled out.

Next, the substrate 9 is pulled out together with the front plate 14 by pulling the thumb screw 15. After the substrate 9 is pulled out, the coil spring 8 is released, and the joint component 6 is released.
Is returned to the home position and is held.

As described above, according to the first embodiment, the removal lever 10 for the substrate 9 is provided near the back board 17,
By providing the connecting bracket 4 to be connected to the extraction lever 10 and the thumbscrew 15 of the front plate 14 and pushing the thumbscrew 15, the board 9 can be reliably removed, and the connector and the stopper portion are not damaged, and the board is removed. The effect of improving workability is obtained.

In addition, the effective arrangement state of the electric components on the front plate 14 can be maintained, and the front plate 14 using a shield component such as the shield finger 16 and the upper and lower guide rails 2 and 3 are brought into contact with each other in terms of shield characteristics. Since the structure of the conventional structure can be adopted, the advantages of the conventional structure can be inherited as it is.

Further, since the moving hole 19 of the front plate 14 fits within the outer shape of the thumb screw 15, the moving hole 19 is not exposed even when the thumb screw 15 is fixed, so that the appearance is not impaired. can get.

FIGS. 8A and 8B are views showing a fixed state of the substrate according to the second embodiment of the present invention, wherein FIG. 8A is a side view, FIG. 8B is a front view, and FIG. It is a figure showing a state.

A push button 23 is fitted into the hollow portion 21a of the thumb screw 21 attached to the front plate 24 fixed to the substrate 9 while compressing the coil spring 22, so that they do not protrude from the hollow portion 21a. Is configured.

A cylindrical spacer 27 is provided on the front surface 26 of the guide rail to prevent the shaft of the thumb screw 21 from oscillating.
Is jointed with a push button 23 protruding from the thumbscrew 21 on one side, and is connected to an extraction lever 28 near the backboard 17 on the other side. The connection fitting 29 is joined.

FIG. 10 is an exploded perspective view of the thumb screw portion used in the second embodiment.

The thumb screw 21 is composed of a knob 21b, a shaft 21c, and a screw 21d.
b, the shaft portion 21c and the screw portion 21d are formed in two stages and formed with a hollow portion 21a penetrating therethrough.

A coil spring 22 is provided in the hollow portion 21a.
And the push button 23 is fitted. The push button 23 includes a button portion 23a and a shaft 23b.
A protrusion 23c is formed on the tip side of the shaft 23b.
b is the coil spring 22, the hollow part 2 of the thumb screw 21
1a.

The shaft 21c of the thumbscrew 21 is engaged with the spacer 27 as shown in FIGS. The screw portion 21d engages with a screw hole provided in the guide rail front surface portion 26 to fix the front plate 24.

FIGS. 11 and 12 are views showing the mounting state of the push button, in which (a) is a perspective view, (b) is a front view, and (c) is a sectional view.

The hollow portion 2 of the thumbscrew 21 corresponds to the projection 23c formed on the shaft 23b of the push button 23.
1a is provided with a first groove 21e and a second groove 21f. GG sectional view of FIG. 11C and FIG.
As shown in the cross-sectional view taken along line H-H, the first groove 21e is penetrated, and the second groove 21f is formed to a position at a distance W from the tip end.

First, the protrusion 23c of the push button 23 is aligned with the first groove 21e, and the coil spring 2 shown in FIG.
2 is pressed while being compressed, and the push button 23 is rotated 90 degrees when the projection 23c projects from the thumbscrew 21 as shown in FIG. 11, and the projection 23c is fitted into the second groove 21f as shown in FIG. The push button 23 is configured to be held at a distance W from the tip of the thumbscrew 21 by the spring force of the coil spring 22.

The operation of the second embodiment will be described with reference to FIGS.

As shown in FIG. 8, the substrate 9 is fixed to the front surface 26 of the guide rail by the thumb screw 21 via the front plate 24. In this state, the push button 23 incorporated in the thumbscrew 21 is
Cannot be pushed because of being fixed, and FIG.
Since the projection 23c is fitted in the second groove 21f as shown in FIG.

First, when removing the substrate 9 as shown in FIG. 9, the screw portion 21 of the thumb screw 21 is loosened and removed from the front surface 26 of the guide rail. At this time, the thumbscrew 21 is held coaxially by the spacer 27 welded to the guide rail front surface 26.

Next, by pushing the push button 23 in the hollow portion 21a of the thumb screw 21, the joint part 2 is pressed.
Extraction lever 28 interlocked with 5 via connection fitting 29
Rotates counterclockwise, pushes the board 9 forward, releases the connector fitting, and allows the board 9 to be pulled out.

The thumb screw 21 and the front plate 24 are engaged by a stopper or the like (not shown), and the substrate 9 can be removed by pulling out the thumb screw 21. When the substrate 9 is removed, the coil spring 22 incorporated in the thumb screw 21 rebounds, and the push button 2
3 returns to the home position.

As described above, according to the second embodiment, in addition to the effects of the first embodiment, since the thumb screw 21 is always coaxial with the joint component 26, the thumb screw 21
Is not moved, and the shaft runout at the time of pushing can be suppressed, so that it is possible to smoothly push the push button 23.

[0052]

As described above, according to the present invention, it is possible to reliably remove the board by providing a connecting metal for connecting the board removing lever and the thumb screw or push button of the front plate, thereby enabling the board to be reliably removed. And the workability at the time of removing the substrate can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a front side and a back side of a connection fitting.

FIG. 3 shows a thumb screw and a moving hole.

FIG. 4 is a diagram showing a substrate fixed state according to the first embodiment;

FIG. 5 is a diagram showing a state in which a thumb screw is removed.

FIG. 6 is a view showing a state in which the thumb screw and the joint part are joined.

FIG. 7 is a view showing a state where a substrate is removed.

FIG. 8 is a diagram showing a substrate fixed state according to a second embodiment of the present invention.

FIG. 9 is a view showing a state where a substrate is removed.

FIG. 10 is an exploded perspective view showing a thumb screw part.

FIG. 11 is a diagram showing a mounting state of a push button.

FIG. 12 is a diagram showing a mounting state of a push button.

FIG. 13 is a perspective view showing a conventional example.

FIG. 14 is a perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Unit 2 Upper guide rail 3 Lower guide rail 4,29 Connecting bracket 5,26 Front part of guide rail 6,25 Joint parts 7 Hole 8,22 Coil spring 9 Substrate 10,28 Removal lever 11 Removal lever holding part 12 Rivet 13 Recess 14, 24 Front plate 15 Thumb screw 16 Shield finger 17 Backboard 18 Stopper 19 Moving hole 21 Thumb screw 21a Hollow part 21e First groove 21f Second groove 23 Push button 23b Shaft 23c Projection 27 Spacer

Claims (10)

[Claims] 1. An electronic device in which a board having a front plate fixed thereto is inserted into upper and lower guide rails, and the board is fitted into a backboard with a connector. A connection fitting provided for each board; A removal lever that is rotatably held and joined to the connection fitting, and a thumb screw that fixes the front plate to the front surface of the guide rail when the board is fixed and joins the connection fitting via a joint component when removing the board. By pushing the thumbscrew, the removal lever rotates through the connection fitting to push the substrate forward,
A board removal structure, wherein the board and the backboard are disengaged from the connector and the board can be pulled out. 2. The substrate removing structure according to claim 1, wherein said connecting fitting is provided on at least one of said upper and lower guide rails. 3. A step is provided on the knob, and two holes are connected and integrated with each other at a predetermined width in the front plate, and a moving hole for engaging with the step is provided. Moving in the moving hole through the predetermined width,
The substrate removal structure according to claim 1, wherein the position of the thumb screw on the front plate is made coaxial with the connection fitting. 4. The substrate removing structure according to claim 3, wherein said moving hole is formed so as to fit within the outer shape of said thumb screw. 5. The joint part joined to the connection fitting is held in a hole provided in a front part of the guide rail via the coil spring. The substrate removal structure according to 1. 6. An electronic device in which a board to which a front plate is fixed is inserted into upper and lower guide rails, and the board is fitted into a backboard with a connector. A removal lever held rotatably and joined to the connection fitting; and a hollow portion, wherein the front plate is fixed to the front surface of the guide rail when the board is fixed, and is joined to the connection fitting via a joint component when the board is removed. A thumb screw, and a push button that is fitted together with a coil spring into a hollow portion of the thumb screw, and a tip protruding from the thumb screw is connected to the connection fitting via the joint component that is coaxial. By pressing a push button, the removal lever rotates through the connection fitting to push the substrate forward, and Substrate removal structure, characterized in that to remove the connector fitting of the backboard to permit withdrawal of said substrate and. 7. The board removing structure according to claim 6, wherein said connecting metal fittings are provided on at least one of said upper and lower guide rails. 8. The substrate removal structure according to claim 6, wherein a spacer for preventing shaft oscillation of the thumb screw is fixed to the front surface of the guide rail. 9. A push button having a protrusion at a tip thereof, a second groove formed in a hollow portion of the thumb screw corresponding to the protrusion and a second groove formed to a predetermined distance from the tip.
The protrusion is passed through the first groove, the push button is inserted into the hollow portion while compressing the coil spring, and the push button is rotated when the protrusion protrudes from the thumb screw to rotate the push button. 7. The push button is attached to a thumbscrew by being fitted in a groove of a second one.
The substrate withdrawal structure according to any one of Items 1 to 8. 10. The substrate removing structure according to claim 6, wherein the push button returns to a home position by a spring force of the coil spring when the substrate is removed.