JPH08139472A - Structure for mounting electronic device on rail - Google Patents

Abstract

PURPOSE: To execute easily an engaging release operation of an electronic device from a rail by a method wherein a case is provided with a release operation part, which allows a second engaging pawl to displace to the detachment position of the engaging pawl, in such a way that the release operation part can be slided and the release operation part is pressed. CONSTITUTION: One pair of fixed engaging pawls 24, which are first engaging pawls, and a movable engaging plate 27, which is a second engaging pawl, are provided under the bottom part of a base plate 20 of a case 11. The one pair of the fixed engaging pawls 24 are made to engage with an engaging piece part 51 on one side of engaging piece parts 51 of a rail 50, then, the other engaging piece part 51 is pressed to a slant face 27a of the plate 27 and the plate 27 is engaged with the rail 50 against the elastic force of a spring piece. When the engagement is released, an operating end part 35a of a release operating plate 35 is pressingly operated to move the plate 27 to the engagement releasing direction so as to release its engagement with the rail 50. Thereby, an engagement releasing operation of an electronic device from the rail 50 can be easily executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for mounting an electronic device on a rail having a pair of locking pieces such as a DIN rail so that the electronic device can be removably mounted on the rail.

[0002]

2. Description of the Related Art As a mounting structure for electronic devices of this type,
For example, the configuration disclosed in JP-A-2-310999 is known. This is, as shown in FIG. 13, a pair of locking piece portions 2A provided on both sides of the DIN rail 1,
2B is used to fix the main body case 3 in a detachable manner. The movable claw plate 4 is provided on the bottom surface of the main body case 3 so as to be movable in the arrow direction, and one locking piece portion 2 of the DIN rail 1 is provided.
A fixed claw portion (not shown), which is locked to A and faces the movable claw plate 4 and engages with the other locking piece portion 2B, is attached to the main body case 3
It is provided on the bottom surface of the. The movable claw plate 4 is normally urged in a direction to engage with the locking piece 2A, and in order to release the engagement, a movable driver claw plate 4 is moved by, for example, hooking a driver 5 on the movable claw plate 4 as shown in FIG. The engagement can be released by moving the claw plate 4 in the pull-out direction.

[0003]

However, in order to release the engagement in the above structure, the tool such as the driver 5 is required as described above, and the releasing operation is troublesome.
In particular, when the body case 3 becomes large, it is necessary to provide a plurality of movable claw plates 4 as shown in FIG.
Since the movable claw plate 4 must be disengaged at the same time in order to disengage from the DIN rail, the releasing operation is considerably troublesome.

In order to solve such a problem, for example, as disclosed in Japanese Utility Model Laid-Open No. 5-46079, there is a structure in which a lever mechanism for disengaging a movable claw plate is provided on a side wall of a main body case. Although known, this has a problem that the lever mechanism increases the number of parts and the number of manufacturing steps, resulting in an increase in manufacturing cost.

The present invention has been made in view of the above circumstances. Therefore, an object of the present invention is to provide an electronic device which can be easily disengaged from a rail and which has a simple structure and can be manufactured at low cost. It is to provide a mounting structure for a rail.

[0006]

SUMMARY OF THE INVENTION The present invention is a structure for detachably attaching a case of an electronic device to a rail having a pair of locking piece portions, the locking piece portion of one of the rails provided on the case. Is fixed to the rail by engaging the other locking piece of the rail provided at a position where the rail is sandwiched between the first locking claw that can be engaged with the first locking claw and the first locking claw on the case. Second locking claw that is movable between a mounting position and a disengaging position where the engagement piece is disengaged, and a biasing force that constantly biases the second locking claw in the mounting position direction. The present invention is characterized in that the means and the release operation portion which is slidably provided on the case and displaces the second locking claw to the removal position are provided (the invention of claim 1).

The release operation portion is provided on the mounting surface portion of the case to the rail, and is slid from the side surface portion of the case opposite to the second locking claw from the side surface portion on the side opposite the second locking claw. It can be arranged so as to be possible (claim 2
Invention)

[0008]

According to the structure of the above means, the case is attached to the rail by engaging the first and second locking claws with both locking pieces of the rail. To remove this case from the rail, the release operation part may be pressed. Then, the release operation portion slides with respect to the case to displace the second locking claw to the removal position, so that the engagement between the second locking claw and the locking piece of the rail is released, and the case is removed. It becomes removable.

The invention according to claim 2, wherein the releasing operation portion is slidably arranged so as to be hooked on the second locking claw from a side surface portion of the case opposite to the second locking claw with the rail interposed therebetween. According to the above, since the operating direction of the release operating portion and the disengaging direction of the second locking pawl are the same, the releasing operating portion is simply linearly connected to the second locking pawl. And it will be better.

[0010]

As described above, according to the present invention, a special tool is not required for the disengagement operation because the disengagement operation portion can be simply pushed and slid and displaced. Is extremely simple, and moreover, the structure is much simpler than that of the one provided with a lever mechanism. According to the second aspect of the invention, the structure is further simplified because the release operation portion and the second locking claw may be in a linear connection relationship.

[0011]

【Example】

<First Embodiment> A first embodiment in which the present invention is applied to a structure for mounting a photoelectric sensor on a DIN rail will be described below with reference to FIGS. 1 to 11.

The case 11 of the photoelectric sensor is constructed by fixing the base plate 20 to the bottom surface of the case body 12 having a rectangular shape by mounting screws (not shown). on the other hand,
The DIN rail 50 has a well-known structure in which the upper surface is formed in a gutter shape and a pair of locking piece portions 51, 51 are provided on both left and right sides of the upper surface opening portion.

Now, as shown in the plan view of FIG. 3, the base plate 20 is in the shape of a shallow rectangular container and has an enclosing wall portion 21.
At the same time, lattice-like reinforcing ribs 22 are provided in the surrounding wall portion 21. Base plate 2 corresponding to the mounting surface of case 11
A rail accommodating recess 23 into which the DIN rail 50 is fitted is formed on the bottom surface of the recess 0, and a pair of fixed locking claws 24 corresponding to the first locking claws are provided on one side wall of the recess 23. At a predetermined distance from the bottom surface portion. Further, a receiving projection 25 is provided at a portion of the bottom surface of the rail accommodating recess 23 corresponding to the fixed locking claw 24, and the DIN rail is provided between the receiving projection 25 and the fixed locking claw 24. The locking piece 51 of 50 can be inserted and engaged. In addition, the receiving ridge 2
5 has a substantially semi-cylindrical shape, and therefore, the receiving projection 25 has a fixed locking claw 2 at a portion corresponding to the tip side of the locking piece 51.
4 has a sloped shape that is inclined away from 4.

The bottom surface of the base plate 20 extends in a direction orthogonal to the extending direction of the rail accommodating recess 23, and is continuous with the rail accommodating recess 23 to engage the locking plate accommodating recess 26.
Is formed so as to be recessed, and the movable locking plate 27 corresponding to the second locking claw is housed therein. The movable locking plate 27 is made of, for example, plastic having excellent self-lubricating property.
As shown in FIG. 5, the inclined surface 27a is provided on the lower surface (the surface on the DIN rail 50 side) on the tip end side (rail accommodating recess 23 side), and the tip is protruded into the rail accommodating recess 23 and the "mounting position" Can be slid and moved to and from the "removal position" retracted into the locking plate accommodating recess 26 without protruding into the rail accommodating recess 23. As shown in FIG. 7, guide ridges 28 and 29 project to both sides on the front end side and the rear end side of the movable locking plate 27. The movable locking plate 27 is inserted into the guide groove 30 formed in the
It is in a state in which dropping from 6 is blocked. Further, an elastic claw piece 31 is projectingly provided at the rear end portion of the guide projection 28 on the front end side so as to extend along the sliding movement direction in order to regulate the moving amount of the movable locking plate 27 in the projecting direction. The tip projection 31a is engageable with the end edge portion of the overhang portion 32 formed in the locking plate accommodating recess 26.
That is, when the movable locking plate 27 is advanced to the “attachment position”, the tip projection 31a of the elastic claw piece 31 becomes overhanging part 3.
The protrusion amount into the rail accommodating recess 23 is regulated by engaging with the end edge portion of No. 2.

Further, as shown in FIG. 6, the locking plate accommodating recess 2 is formed.
A pair of locking pins 33 are projectingly provided on the tip end side of the bottom surface of 6, and two spring pieces 34, which are in pressure contact with the locking pins 33, are formed on the movable locking plate 27 so as to form a V shape. It is integrally molded. Each spring piece 34 is pressed against the locking pin 33 from the outside, and therefore, the movable locking plate 2 is elastically moved.
7 is always urged in the protruding direction, and the movable locking plate 2
A biasing means for constantly biasing 7 in the "mounting position" direction is configured.

On the other hand, on the upper surface side of the base plate 20, as shown in FIG. 3, a release operation plate 35 corresponding to a release operation portion is provided. The release operation plate 35 has a long strip shape having a length substantially equal to the longitudinal dimension of the base plate 20, and its operation end portion 35 a is opposite to the movable locking plate 27 of the base plate 20 with the DIN rail 50 interposed therebetween. It projects outward from the opening 20a formed in the side surface portion on the side. Further, the other end side of the release operation plate 35 extends to the movable locking plate 27 side across the DIN rail 50 (rail accommodating recess 23), bends in a crank shape and protrudes to the lower surface side of the base plate 20, Is engaged with the upper surface recessed portion 27b of the movable locking plate 27 and has an integrated connection relationship (see FIG. 2). As shown in FIG. 3, guide ribs 37 having an L-shaped cross section are provided on the upper surface of the base plate 20 in opposition to each other, and the release operation plate 35 can be slidably moved with respect to the base plate 20 so as to be held from both sides. Has become. The notch 36 formed in the release operation plate 35 is the guide rib 3 described above.
7 is for inserting the distal end portion of the release operation plate 7. When the release operation plate 35 is attached, the cutout portion 36 and the guide rib 37 are aligned with each other, and after the guide rib 37 is inserted, the release operation plate 35 is slightly slid to release the release operation plate. 35 can be held by the guide ribs 37.

In order to attach the case 11 to the DIN rail 50 in the above structure, first, the rail accommodating recess 23 formed in the base plate 20 of the case 11 is set to D.
Addressing the upper surface of the IN rail 50, one locking piece portion 51
Is engaged with the fixed locking claw 24. At this time, since the base plate 20 is provided with the semi-cylindrical receiving projection 25, as shown in FIGS. 10 and 11, the case 11 is slanted and the tip of the locking piece portion 51 is fixed to the locking claw 24. And receiving ridge 2
It is possible to insert it between 5 and 5. When the case 11 that has been inclined is rotated in the direction of the arrow in the figure around the fixed locking claw 24 portion, the inclined surface 27a at the tip of the movable locking plate 27 becomes the other locking piece 51. The movable locking plate 27 is pressed inward and the movable locking plate 27 is pushed inward in the locking plate housing recess 26 along the inclination. Therefore, the spring piece 34
The movable locking plate 27 is pushed back against the elastic force of the
Passage of the locking piece portion 51 of the rail 50 is allowed, and when this is passed, the movable locking plate 27 is restored by the elastic force of the spring piece 34 to reach the "mounting position", and the locking piece portion 51 is engaged. become. As a result, one locking piece 51 of the DIN rail 50 engages with the fixed locking claw 24, and the other locking piece 51 engages with the movable locking plate 27. It will be fixed to the DIN rail 50.

Next, the case 11 in the fixed state can be removed from the DIN rail 50 as follows. That is, a finger is put on the operation end portion 35a of the release operation plate 35 slightly protruding from the base plate 20 of the case 11, and this is pushed. Then, since the release operation plate 35 slides, the movable locking plate 27, which is connected to the release operation plate 35, is pushed back against the elastic force of the spring piece 34 in the “removal position” direction, and as a result, the engagement of the DIN rail 50 is ended. Stop piece 5
1 disengages. Therefore, when the case 11 is tilted so as to lift the movable locking plate 27 side contrary to the time of attachment, the state shown in FIG. 11 is restored, and the engagement between the other locking piece portion 51 and the fixed locking claw 24 is restored. Case 11 can be released easily
Is immediately removed from the DIN rail 50.

As described above, according to this embodiment, the case 11
Not only the installation work of the but also the removal work, the release operation plate 3
It can be executed by a one-touch operation of simply pressing 5 with a finger. Since the release operation plate 35 is configured to be pushed and slid instead of being pulled out, a large knob portion for pulling out operation is not required, and downsizing is possible, and tools such as a screwdriver are not required. , The task becomes extremely easy. Moreover, the release operation plate 35 is slidably provided, and by pressing the release operation plate 35, the movable locking plate 27 that is in a linear connection with the release operation plate 35 is displaced to the “removal position”. It is extremely simple as compared with the structure in which a mechanism or the like is provided, the number of parts and the number of assembling steps are small, and the manufacturing can be performed at low cost.

Moreover, a semi-cylindrical receiving projection 25 is provided on the base plate 22, and the receiving projection 25 and the fixed locking claw 2 are provided.
Since the locking piece portion 51 is inserted between the case 4 and 4, the rotation operation of the case 11 around the fixed locking claw 24 side is allowed, and this makes the mounting and dismounting work easier. .

<Second Embodiment> FIG. 12 shows a second embodiment of the present invention. The difference from the first embodiment is that a recess 40 is formed in the base plate 20 of the case 11, and the operation end 35a at the tip of the release operation plate 35 is arranged in the recess 40. With this configuration, the release operation plate 35 does not project from the case 11, and thus the size can be further reduced. Other configurations are similar to those of the first embodiment.

<Other Embodiments> The present invention is not limited to the above embodiments, and the following embodiments are possible, for example, and these are also included in the technical scope of the present invention.

(1) In each of the above-mentioned embodiments, the first locking claw is constituted by the fixed locking claw 24, but the invention is not limited to this, and the first locking claw 24 is not limited to this.
Similarly to the second locking claw, the locking claw may be configured by the movable locking plate 27 and disengaged by the release operation plate. This is convenient because the removal work can be performed from both the front and back sides of the case 11.

(2) In the above embodiments, the movable locking plate 27 is used.
Was manufactured as a separate part from the release operation plate 35,
The present invention is not limited to this, and both may be integrally manufactured from plastic, which can further reduce the number of parts. In addition, the invention of the present application is not limited to the embodiments described by the above description and the drawings, and various modifications may be made without departing from the scope of the invention.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an attached state of an electronic device according to a first embodiment of the invention.

[Fig. 2] Similarly, a sectional view of the mounting base.

[Fig. 3] Similarly, a plan view of the mounting base.

[Fig. 4] Similarly, a bottom view of the mounting base

FIG. 5 is a front view of the mounting base.

FIG. 6 is a perspective view of the base plate.

FIG. 7 is a bottom view of the movable locking plate.

FIG. 8 is a side view of the movable locking plate.

FIG. 9 is a bottom view of the release operation plate.

FIG. 10 is a side view showing how the case is similarly attached and detached.

FIG. 11 is an enlarged sectional view showing how the case is similarly attached and detached.

FIG. 12 is an overall perspective view showing a second embodiment of the present invention.

FIG. 13 is an overall perspective view showing a conventional structure.

[Explanation of symbols]

 11 ... Case 12 ... Case main body 20 ... Base plate 23 ... Rail accommodating recess 24 ... Fixed locking claw (first locking claw) 25 ... Receiving projection 27 ... Movable locking plate (second locking claw) 35 ... Release operation plate (release operation part) 50 ... DIN rail (rail) 51 ... Locking piece part

Claims (2)

[Claims] 1. A structure for removably attaching a case of an electronic device to a rail having a pair of locking pieces, wherein the first case is provided on the case and is engageable with one locking piece of the rail. No. 1 locking claw and the first locking claw of the case are provided at positions where the rail is sandwiched, and the other locking piece of the rail is engaged to fix the case to the rail. A second locking claw that is movable between a mounting position and a disengagement position where the engagement piece is disengaged, and the second locking claw provided on the case is mounted at the mounting position. To a rail of an electronic device including a biasing unit that constantly biases in a direction, and a release operation unit that is slidably provided on the case and that displaces the second locking claw to the removal position. Mounting structure. 2. The release operation portion is provided on an attachment surface portion of the case to which the rail is attached, and the release operation portion includes the second portion of the case.
2. The rail of the electronic device according to claim 1, wherein the locking claw is slidably arranged on the second locking claw from a side surface opposite to the locking claw. Mounting structure.