JP4983758B2 - Internal unit attachment / detachment mechanism - Google Patents

Description

  The present invention relates to an internal device attaching / detaching mechanism that is provided between a case and an internal device and attaches / detaches the internal device from the case.

  Prior art documents related to the internal unit attaching / detaching mechanism include the following.

Japanese Patent Laid-Open No. 06-326477 JP 2003-218557 A

FIG. 7 is an explanatory view showing the structure of the main part of a conventional example that is generally used.
In the figure, the bottom of a DIN rail 2 is attached to the case 1.
In order to attach the rectangular module 3 to the case 1, a metal mounting bracket 4 is attached to the side of the module 3, and is pushed into the case 1 in the direction of the arrow X, and a fixing lock 5 provided at the tip of the mounting metal 4 is attached. Lock and attach to the DIN rail 2.

Such an apparatus has the following problems.
In order to remove the module 3 from the case 1, it is necessary to go to the back side of the case 1 and remove the fixed lock 5 from the DIN rail 2, or access the fixed lock 5 in some way to remove the fixed lock 5. .

In short, removing the module 3 from the case 1 has difficulty and lacks maintenance.
The mounting bracket 4 is required separately, the number of parts increases, the weight increases from the place where the metal parts are used, the product weight relatively increases, and the cost increases.

  An object of the present invention is to solve the above problems, and to provide an inexpensive internal unit attaching / detaching mechanism that improves maintainability, eliminates the number of parts by an integrated fixing mechanism, can be reduced in weight, and can be reduced in weight. There is.

In order to achieve such a problem, in the present invention, in the internal unit attaching / detaching mechanism according to claim 1,
In the internal unit attachment / detachment mechanism, which is provided between the case and the internal unit and has a locking mechanism for locking the internal unit to the case, one end is connected to each side of the case, and the internal unit insertion opening side of the case is free Two locking levers as ends, crossing fixing protrusions provided on both side surfaces of the case corresponding to the free end side of the locking lever, and engagement provided in the middle of the locking lever One of the locking mechanisms and the free end side of the locking lever are arranged and held on the case inner side of the overpassing fixing convex part at the time of locking, and when the inner unit is removed from the case, the overcoming fixing convex part is It is provided with an over-traveling convex portion that is disposed and held in contact with the outer side of the case and releases the locking of the locking mechanism.

In the internal unit attaching / detaching mechanism according to claim 2 of the present invention, in the internal unit attaching / detaching mechanism according to claim 1,
The locking mechanism includes a square hole provided in the locking lever and a convex portion provided in the inner unit and locked in the square hole.

In the internal unit attaching / detaching mechanism according to claim 3 of the present invention, in the internal unit attaching / detaching mechanism according to claim 1 or 2,
The crossing fixed convex portion and the crossover moving convex portion have a triangular cross section, and the top sides of the triangle are in contact with each other.

According to claim 1 of the present invention, there are the following effects.
Even when the inner unit is locked to the case by the locking mechanism, the free end of the locking lever is operated from the inner unit insertion opening side of the case, and the jumping movement convex portion provided on the free end side of the locking lever Can be placed and held in contact with the outer side of the case, overcoming the over-mounting fixed projection provided on the case, and the locking mechanism can be released. An internal unit attaching / detaching mechanism that can be more easily performed and the internal unit attaching / detaching operability is improved is obtained.

According to claim 2 of the present invention, there are the following effects.
Since the locking mechanism is provided with a square hole provided in the locking lever and a convex part provided in the inner unit and locked in the square hole, a simple structure and an inexpensive internal unit attaching / detaching mechanism can be obtained. It is done.

According to claim 3 of the present invention, there are the following effects.
The crossing fixed convex part and the crossing moving convex part have a triangular shape in cross section, and the top side of the triangle is in contact with each other, so in the thin part of the top part where elastic deformation is easily obtained, Since it gets over, it is possible to smoothly move over and get an internal unit attaching / detaching mechanism that can make the attaching / detaching operation smoothly.

Hereinafter, the present invention will be described in detail with reference to the drawings.
1A and 1B are explanatory views of a main part configuration of an embodiment of the present invention, in which FIG. 1A is a front view, FIG. 1B is a plan view, and FIG. 2 is a perspective explanatory view of FIG.
3 is a detailed explanatory view of the main part of FIG. 1, (a) is a front view, (b) is a sectional view taken on line BB of (a), FIG. 4 is a detailed explanatory view of the main part of FIG. Is a front view, (b) is a sectional view taken along the line C-C of (a), FIG. 5 is an operation explanatory diagram of FIG. 1, FIG. 6 is an operation explanatory diagram of FIG. is there.
In the figure, the same symbols as those in FIG. 8 represent the same functions.
Only the difference from FIG. 8 will be described below.

1 and 2, reference numeral 11 denotes a case, and reference numeral 12 denotes an internal unit. In this case, the internal unit 12 uses a square-shaped module.
The case 11 can have four inner units 12 inserted vertically, but in the figure, the state immediately before one inner unit 12 is inserted in the uppermost stage of the case 1 is shown for ease of understanding. Show.

3 and 4 are detailed explanatory views of the main part of FIG.
The locking lever 21 has one end 211 connected to each side surface of the case 11, and the inner device insertion opening 111 side of the case 11 serves as a free end 212.
The overpass fixing convex portions 22 are provided on both sides of the case 1 corresponding to the free end 212 side.

One of the locking mechanisms 311 is provided in the middle of the locking lever 21.
In this case, the locking mechanism 31 includes a square hole 311 provided in the locking lever 21 and a convex portion 312 provided in the inner unit 12 and locked in the square hole 311.

The overpass movement convex portion 23 is provided on the free end 212 side of the locking lever 21 and is disposed and held on the inner side of the case 11 of the overriding fixing convex portion 22 at the time of locking, so that the inner unit 12 is removed from the case 11. Is placed and held in contact with the outer side of the case 11, over the overriding fixing convex portion 22, and the locking of the locking mechanism 31 is released.
In this case, the crossover fixing convex portion 22 and the crossover moving convex portion 23 have a triangular cross section, and the top sides of the triangle are in contact with each other.

FIG. 3B shows a state before the crossover moving convex portion 23 gets over the fixed crossover convex portion 22, and FIG. 4B shows a state after the crossover moving convex portion 23 gets over the crossover fixed convex portion 22.
In FIG. 4B, for easy understanding, the movement state of the overpass movement convex portion 23 is shown slightly exaggerated.

FIG. 5 is a perspective view illustrating in more detail the relationship between the overpass movement convex part 23 and the overpass fixed convex part 22.
FIG. 5A shows a state in which the overpass movement convex part 23 is arranged and held on the inner side of the case 11 of the overpass fixed convex part 22 at the time of locking.
FIG. 5B shows a state in which the overpass movement convex part 23 moves and contacts the inner side of the case 11 of the overpass fixed convex part 22.

FIG. 5C shows a state in which the overpass movement convex portion 23 moves and attempts to get over the overpass fixed convex portion 22.
FIG. 5 (c) shows a state where the overpass movement convex portion 23 moves, gets over the crossover fixed convex portion 22, and contacts the outer side of the case 11 of the overpass fixed convex portion 22.
In FIG. 6, the overpass movement projecting portion 23 moves, gets over the overpass fixed projection 22, contacts the outer side of the case 11 of the overpass fixed projection 22, and the free end 212 side of the locking lever 21 is the case 11. Shows the state of being held open on both sides (indicated by arrow Y).
The locking of the locking mechanism 31 is in a released state.
FIG. 7 is an enlarged view of a main part of FIG.

In the above configuration,
The operation of inserting the inner unit 12 into the case 11 is as follows.
The locking lever 21 is moved so that the overpass movement convex portion 23 is disposed and held on the inner side of the case 11 of the overpass fixing convex portion 22 as shown in FIG.
The internal unit 12 is inserted into the case 11.
The convex portion 312 provided on the side surface of the case 11 is locked in the square hole 311 of the locking lever 21, and the inner unit 12 is held by the case 11.
The convex portion 312 and the square hole 311 constitute a so-called snap fit mechanism.

The operation for removing the inner unit 12 from the case 11 is as follows.
By moving the locking lever 21, as shown in FIGS. 5B, 5C, and 5D, the overpass movement convex portion 23 gets over the override fixed convex portion 22, and the overpass movement convex portion 23 is overridden fixed convex portion. The arrangement is held in contact with the outer side of the case 11.
Due to the operation of the locking lever 21, the convex portion 312 provided on the side surface of the case 11 is disengaged from the square hole 311 of the locking lever 21, and the locking of the locking mechanism 31 is released. Can be taken out from.

As a result,
Even when the inner unit 12 is locked to the case 11 by the locking mechanism 31, the free end 212 of the locking lever 21 is operated by operating the free end 212 of the locking lever 21 from the inner unit insertion opening side 111 of the case 11. The over-traveling movement convex portion 23 provided on the side passes over the over-ride fixing convex portion 22 provided in the case 11 and is disposed and held in contact with the outer side of the case 11 to release the locking mechanism 31. Therefore, the internal unit 12 can be easily attached to and detached from the case 11 from the internal unit insertion opening 111 side, and an internal unit attaching / detaching mechanism with improved internal unit attaching / detaching operability is obtained.

  Since the locking mechanism 31 is provided with a square hole 311 provided in the locking lever 21 and a convex portion 312 provided in the inner unit 12 and locked in the square hole 311, it has a simple configuration and is inexpensive. An internal unit attaching / detaching mechanism is obtained.

  The crossover fixing convex portion 22 and the crossover moving convex portion 23 have a triangular cross section, and the top portions of the triangle are in contact with each other. Since the convex portion 23 gets over, an internal device attaching / detaching mechanism that can smoothly move over and attach / detach can be obtained.

The above description merely shows a specific preferred embodiment for the purpose of explanation and illustration of the present invention.
Therefore, the present invention is not limited to the above-described embodiments, and includes many changes and modifications without departing from the essence thereof.

It is principal part structure explanatory drawing of one Example of this invention. FIG. 2 is a perspective explanatory view of FIG. 1. It is principal part detailed explanatory drawing of FIG. It is principal part detailed explanatory drawing of FIG. It is operation | movement explanatory drawing of FIG. It is operation | movement explanatory drawing of FIG. It is principal part detailed explanatory drawing of FIG. It is structure explanatory drawing of the prior art example generally used conventionally.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 2 DIN rail 3 Module 4 Mounting bracket 5 Fixed lock 11 Case 111 Inner unit insertion opening 12 Inner unit 21 Locking lever 211 One end 212 Free end 22 Overriding fixed convex part 23 Overcoming moving convex part 31 Locking mechanism 311 Square hole 312 Convex

Claims (3)

In the internal unit attaching / detaching mechanism provided between the case and the internal unit, and having a locking mechanism in which the internal unit is locked to the case,
Two locking levers, one end of which is connected to each side of the case and the inner unit insertion opening side of the case is a free end;
Overcoming fixed protrusions respectively provided on both side surfaces of the case corresponding to the free end side of the locking lever;
One of the locking mechanisms provided in the middle of the locking lever;
Provided respectively on the free end side of the locking lever, and placed and held on the inner side of the overhanging fixing convex part at the time of locking, and when the inner unit is removed from the case, it gets over the overcoming fixing convex part and on the outer side of the case An internal organ attaching / detaching mechanism comprising: a jumping movement projecting portion that is arranged and held in contact with and releases the locking of the locking mechanism. The locking mechanism includes a square hole provided in the locking lever;
The internal unit attaching / detaching mechanism according to claim 1, further comprising: a convex portion provided in the internal unit and locked to the square hole. The internal unit attaching / detaching mechanism according to claim 1, wherein the crossover fixing convex portion and the crossover moving convex portion have a triangular cross-section and the top sides of the triangle are in contact with each other.

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