JPH11233970A - Rail-mounted equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the internal structure or circuit of rail-mounted equipment which is engaged with and connected to the upper and lower engaging sides of a supporting rail from being broken or the engaged and connected parts of the equipment from being damaged by preventing the equipment from being strongly shaken by vibrations, etc. SOLUTION: At engaging of rail-mounted equipment 1 with the upper and lower engaging sides 2a and 2b of a supporting rail 2, spacers 15 and 10 are respectively disposed to the upper and lower spaces C formed between a wall surface W, to which the rail 2 is fitted and the back of an equipment case 3 for filling the spaces C. The lower spacer 10 is integrally protruded from the case 3, and at the same time, the upper spacer 15 is inserted between the wall surface W and the back of the case 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various rail-mounted devices mounted on a support rail such as a unit power supply, a temperature controller or a timer device.

[0002]

2. Description of the Related Art FIG. 18 is a perspective view of a unit power supply 31, which is an example of a conventional rail-mounted device, as viewed from the back, and FIG. 19 is a side view of the mounting structure. The support rail 32 for connecting this rail-mounted device is horizontally fixed to the inner wall surface W of a control panel or the like by screwing, and flange-shaped engagement sides 32a and 32b are bent at upper and lower sides. I have. A rail groove 34 of a vertical width for engaging the support rail 32 is formed laterally on the rear surface of the device case 33 of the rail-mounted device 31. An engaging recess 35 is formed to be engaged with the mating side 32a, and a movable engaging piece 36 to be engaged with the lower engaging side 32b on the lower side of the support rail 32 is elastically provided at the lower center of the rail groove 34. Slidable up and down.

[0003] When mounting the rail-mounted device 31, as shown in FIG. 19 (a), first, the engagement concave portion 35 is attached to the support rail 3 while the device case 33 is slightly tilted.
2 is engaged with the upper engagement side 32a.
Press the lower part of 3 toward wall surface W. As a result of this pressing, the lower engaging side 32b of the support rail 32 gets over the movable engaging piece 36 while pushing down and displacing it, and FIG.
As shown in (b), the movable engagement piece 36 that has been displaced and raised
Are engaged with the engagement side 32b, and the rail-mounted device 31 is engaged and connected to an arbitrary position in the longitudinal direction of the support rail 32.

[0004]

In the conventional rail-mounted device constructed as described above, the support rail 3
2, the wall surface W and the device case 33
A gap C will be formed above and below between the back of
When vibration is applied from the outside for some reason, the rail-mounted device 31 is largely shaken by the upper and lower gaps C due to the elastic deformation of the engagement sides 32a and 32b of the support rail 32, and the internal structure and circuit of the device. May be damaged, or the engagement connection portion may be deformed or damaged.

The present invention has been made in view of such a point, and it is intended to prevent a rail-mounted device engaged with and connected to a support rail from being largely shaken by vibration or the like, and to provide an internal structure of the device. It is an object of the present invention to prevent damage to a circuit or a circuit and damage to an engagement connection portion.

[0006]

The construction and operation of the rail-mounted device according to the present invention are as follows.

According to the first aspect of the present invention, there is provided a rail-mounted device which is mounted on upper and lower engagement sides of a support rail mounted on a wall surface, wherein the wall surface on which the support rail is mounted and a rear surface of an equipment case. A spacer for filling the gap is provided on at least one of the upper part and the lower part of the gap formed therebetween.

According to a second aspect of the present invention, in the first aspect of the present invention, the spacers are provided at the upper and lower portions of the gap, and one of the upper and lower spacers is integrally protruded from the equipment case. The other spacer is inserted and mounted between the wall surface and the back of the equipment case.

According to a third aspect of the present invention, in the first aspect of the present invention, the spacers are provided in the upper and lower portions of the gap, and one of the upper and lower spacers is integrally protruded from the equipment case. The other spacer is provided on the device case so as to be elastically deformable in a direction facing the wall surface.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the spacer is mounted on the equipment case so as to be able to be adjusted by a screw which is rotated from the front side of the equipment case.

According to a fifth aspect of the present invention, in the invention according to the fourth aspect, the retractable spacer is configured to be capable of retracting into the rear surface of the device case, and a spacer adjusting screw is provided. It is configured to penetrate the retreated spacer and project from the back of the device case.

[0012]

According to the first aspect of the present invention, in a state where the equipment case is engaged and connected to the upper and lower engagement sides of the support rail,
Spacers are provided in at least one of the gaps formed above and below the wall and the back of the equipment case, so that even if external vibration is applied, the spacer prevents at least one of the upper and lower parts of the back of the case from approaching the wall. Therefore, large swinging of the device case is prevented.

According to the second aspect of the present invention, since the other spacer is removed before mounting, the device case can be sufficiently brought close to the wall surface on the spacer mounting side, and the device case can be supported while being tilted. An operation of engaging with the rail can be performed. Then, after the device case is engaged and connected to the upper and lower engagement sides of the support rail, the other spacer is inserted between the wall surface and the case back surface, thereby forming the upper and lower surfaces formed between the wall surface and the case back surface. Since the spacers are present in the respective gaps, even if external vibration is applied, the upper and lower spacers on the rear surface of the case are prevented from approaching the wall surface by the upper and lower spacers, thereby preventing large swinging of the device case.

According to the third aspect of the present invention, the other spacer can be elastically deformed. Therefore, by strongly pressing and deforming this spacer against the wall surface, the device case can be brought sufficiently close to the wall surface on the spacer mounting side. In addition, the operation of engaging the support rail can be performed while tilting the device case.
In the state where the device case is engaged and connected to the upper and lower engagement sides of the support rail, spacers exist in the upper and lower gaps formed between the wall surface and the case back surface, and external vibration is applied. Also, the upper and lower spacers on the back of the case are prevented from approaching the wall surface by the upper and lower spacers, and large swinging of the device case is prevented.

Also, the spacer pressed against the wall surface in the elastically deformed state always presses the device case elastically by the pressing reaction force. This can be absorbed.

According to the fourth aspect of the present invention, since the spacer can be adjusted in and out, the device case can be brought sufficiently close to the wall surface on the spacer mounting side by displacing the spacer backward. The operation of engaging with the support rail can be performed while tilting. Then, after the device case is engaged and connected to the upper and lower engagement sides of the support rail, the retracted spacer is advanced until it comes into contact with the wall surface, so that the upper and lower gaps formed between the wall surface and the case back surface are formed. A spacer is provided in each of the cases to prevent a large vertical swing of the device case.

Further, the device case is pressed forward by the reaction force against the wall surface by the advanced spacer, and even if there is play at the engagement connection with the support rail, this is absorbed. be able to.

According to the fifth aspect of the present invention, the screw for extending and retracting the spacer can also be used as a connecting screw when the device case is directly screwed to the wall without passing through the support rail.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments in which the present invention is applied to a unit power supply mounted on a control panel or the like will be described below with reference to the drawings.

FIG. 1 is a perspective view of a unit power supply 1, which is an example of a rail-mounted electric device according to the present invention, viewed from the front side with a unit power supply 1 mounted on a support rail 2, and FIG. FIG. 2 is a perspective view of the unit power supply 1 as viewed from the rear side.

The support rail 2 is a long member having a width of about several tens mm and a length of about 500 to 1000 mm manufactured by sheet metal press working (or aluminum extrusion molding). Engagement sides 2a and 2b projecting downward in a flange shape are provided. The support rail 2 is cut as it is, or cut into an appropriate length, and fixed to a wall W in a control panel or the like by screws in a horizontal and horizontal posture.

The unit power supply 1 is provided with two rows of external wiring portions 4 provided with a plurality of connection terminals on the front surface of a plastic device case 3 containing a power supply circuit mechanism. At four corners, mounting holes 5 used for directly screwing the unit power supply 1 to the wall surface W are formed. A rail groove 6 having a width substantially equal to the vertical width of the support rail 2 is formed at the center of the upper and lower sides of the rear surface of the case to fit and connect the unit power supply 1 to the support rail 2.

On the left and right sides of the upper edge of the rail groove 6, an engagement recess 7 is formed which engages with the upper engagement side 2a of the support rail 2 from above. A plastic movable engagement piece 8 that engages with the lower engagement side 2 b of the rail 2 is provided so as to be able to move back and forth with respect to the rail groove 6. The movable engagement piece 8 is vertically slidably mounted on the back of the case, and the free end of an arm 8a integrally formed in a cantilever shape inside the movable engagement piece 8 is pin-engaged with the back of the case. The movable engaging piece 8 is urged and protruded toward the rail groove 6 by the elastic force of the arm 8a. At the lower end of the movable engagement piece 8, an operation protrusion 8b for releasing the engagement is continuously provided. This operation protrusion 8b is
In a state where the movable engagement piece 8 is urged and protruded toward the rail groove 6, the movable engagement piece 8 protrudes from the lower end of the case 3 by several mm.
An operation hole 8c for inserting a driver or the like is formed on the front side as shown in FIG.

Tongue-shaped spacers 10 are integrally provided at the lower right and left lower portions of the rear surface of the device case 3 to prevent shaking. As shown in FIGS. 4A and 4B,
A cut groove 11 and a mark line 12 are formed in the spacer 10, and by cutting along the cut groove and the cutting mark line, the protrusion height of the spacer 10 corresponding to the height of the support rail 2 is formed. Can be selected in two stages.

The rail-mounted electric device of the first embodiment according to the present invention is constructed as described above.
A description will be given of an operation of attaching / detaching to / from the device.

When the unit power supply 1 is mounted, first, as shown in FIG. 5 (a), the equipment case 3 is approached to the support rail 2 in a slightly inclined posture, and the engaging recess 7 in the rail groove 6 is inserted into the support rail 2. Engages obliquely from above with the upper engaging side 2a. Next, when the lower portion of the device case 3 is pressed against the support rail 2, the tip of the lower engagement side 2 b of the support rail 2 is formed on the tip of the movable engagement piece 8 in a protruding state. s, and from this state case 3
Is further pressed against the support rail 2 side, the movable engaging piece 8 is pressed downward by the cam action of the inclined guide surface s, and the arm 8a is elastically deformed while the movable engaging piece 8 is elastically deformed.
Is displaced backward. When the engagement side 2b gets over the movable engagement piece 8 and reaches the bottom surface of the rail groove 6, FIG.
As shown in (1), the movable engaging piece 8 elastically returns and rises to engage the engaging side 2b from the back.

Here, slightly protruding streak projections 13 and 14 are provided on the left, right, upper and lower sides of the bottom surface of the rail groove 6, and the upper engagement side 2a rides on the upper streak projection 13. The engagement side 2a and the device case 3 are fitted without looseness while being engaged in the engagement concave portion 10 while the engagement side 2a is engaged with the lower left and right streak projections 14.
When the movable engagement piece 8 is engaged with the intermediate portion in a state where “b” has climbed up, the engagement side 2 b and the device case 3 are fitted without looseness.

In this example, the spacer 10 is cut and adjusted to be short in advance in accordance with the height of the support rail 2. When the unit power supply 1 is mounted on the support rail 2, the end of the spacer 10 is In contact with case 3
Is prevented from approaching the wall surface W. FIG.
As shown in (2), by inserting a separately prepared spacer 15 between the upper portion on the back surface of the case 3 and the wall surface W, the upper portion of the case 3 is prevented from approaching the wall surface W. As described above, by filling the gap C formed between the lower and upper portions of the device case 3 and the wall surface W with the spacers 10 and 15, it is possible to prevent the unit power supply 1 from largely swinging up and down.

The upper spacer 1 formed separately is
Concave and convex portions 16 and 17 are formed on the back of the device case 5 and the device case for receiving the same, so that the inserted spacer 15 does not easily come out upward. Further, a part of the spacer 15 inserted and mounted is engaged with a shallow concave portion 18 formed on the upper surface of the device case 3, and the engagement prevents the spacer 15 from coming off in the lateral direction. I have.

Further, as shown in FIG. 2, the separate spacer 15 is formed in a step shape, the supporting rail 2 having a small height is used, and the space C between the wall surface W and the back of the equipment case is small. 6, a portion 15a having a small thickness is inserted between the wall surface W and the back of the case, as shown in FIG.
When the support rail 2 having a large height is used and the gap C between the wall surface W and the back of the device case is large, as shown in FIG. Inserted. When the gap C is large, the lower spacer 10 is used as it is.

To release the unit power supply 1 from the support rail 2 and remove it or move it sideways, the operation hole 8c of the operation projection 8b projecting from the lower surface of the case 3
The movable engagement piece 8 is forcibly displaced backward from the rail groove 6 by inserting a driver or the like from the front side of the case and pulling it down like a lever while supporting the driver on the lower surface of the case. May be removed from the engagement side 2b.

[Second Example] FIGS. 8 and 9 show a second example of the rail-mounted device according to the present invention. In this example, spacers 10 are integrally formed at the lower left and right of the back of the device case 3 as in the previous example, and columnar spacers 20 made of an elastic material such as rubber are press-fitted at the upper right and left of the back of the device case 3. Have been.

At the time of mounting the device on the support rail 1, as shown in FIG. 9A, the upper portion of the device case 3 is strongly pressed against the wall surface W so as to compressively deform the upper spacer 20, and the engagement recess 7 is formed. After engaging with the engaging side 2a of the support rail 2, the lower part of the case is pressed against the wall surface side,
As shown in FIG. 9B, the movable engagement piece 8 is
To the engagement side 2b.

According to this configuration, the lower part of the equipment case 3 is completely prevented from approaching the wall surface W by the contact of the lower spacer 10 with the wall surface W, and the upper spacer 20 is elastically attached to the wall surface W. , The upper portion of the device case 3 is prevented from approaching the wall surface W side, and large vertical swing of the device case 3 is suppressed.

Third Embodiment FIGS. 10 and 11 show a third embodiment of the rail-mounted device according to the present invention. In this example, a spacer 10 is integrally provided on the lower left and right of the back of the device case 3 as in the first example, and a similar spacer 21 is also provided on the upper right and left of the back of the device case 3. When the spacers 10 and 21 are projected on the upper, lower, left, and right sides of the rear surface of the device case 3 as described above, the device case 3 cannot be first engaged with the upper engagement side 2a of the support rail 2 while being inclined. Therefore, a movable engagement piece 22 urged downward by an elastic arm 22a is provided also at the upper center of the rail groove 6, and as shown in FIG.
The device case 3 is pressed against the support rail 2 in parallel with the wall surface W, so that the upper and lower movable engagement pieces 22 and 8 are moved over and engaged substantially simultaneously. In the device case 3 attached in this manner, the gap C with the wall surface W at the top and bottom is filled with the spacers 21 and 10, so that the vertical movement is reliably prevented.

[Fourth Example] FIGS. 12 and 15 show a fourth example of the rail-mounted device according to the present invention. In this example, spacers 23 that can move in and out are attached to the four corners on the back surface of the device case 3. The spacer 23 is formed in a hexagonal axis shape having a screw hole 24 at the center, and is inserted from the rear side of the case into a hexagonal hole 25 formed in the back of the device case 3. A long and narrow opening 26 communicating with each hexagonal hole 25 is formed in the upper and lower end surfaces of the device case 3, and a screw 27 is inserted through this opening 26 and screwed into the spacer 23 mounted on the hexagonal hole 25 from the front. The screw 27 has a shaft 27 having a smaller diameter than the screw 27a.
a shaft 27b is engaged with a groove 29 formed in a front wall 28 of the opening 26, and a screw 27
The front end of a is in contact with the front wall portion 28 of the opening 26 so that the screw 27 is prevented from detaching forward. Note that a right-hand thread is cut in the screw portion 27a.

According to this structure, when the spacer 23 is mounted on the support rail 2, the screw 27 is rotated to the right in advance.
Is retracted from the back of the case until the device case 3 is tilted to engage the engaging recess 7 with the upper engaging side 2a of the support rail 2 as in the previous example, and then engage the lower engaging side 2b.
, The screw 23 is rotated to the left to cause the spacers 23 to protrude from the back of the case, and as shown in FIG.
, The device case 3 can be reliably and firmly fixed.

When the screw 27 is rotated clockwise to project the entire screw portion 27a from the spacer 23 to the rear side,
As shown in FIG. 15, this screw 27 can be used as a connection screw when the device case 3 is directly attached to the wall surface W.

[Fifth Embodiment] FIGS. 16 and 17 show a fifth embodiment of the rail-mounted device according to the present invention. In this example, the spacer 23 in the fourth example is modified, and the contact area with the wall surface W is increased by connecting a large-diameter contact portion 23a to the end of the hexagonal-shape spacer 23. As a result, the surface pressure acting on the contact portion can be reduced to prevent deformation and damage of the wall surface W.

[Other Modifications] Although not shown, the present invention can be implemented in the following forms.

(1) The spacer 10 integrally projecting from the rear surface of the device case 3 does not necessarily have to be in close contact with the wall surface W, and even if there is a slight gap between the spacer 10 and the wall surface W, Large sway can be sufficiently prevented.

(2) The spacer 10 can be provided integrally with the lower part of the rear surface of the device case 3 and provided with the adjustable spacer 23 shown in the fourth or fifth example at the upper part of the rear surface.

(3) All four corners on the back surface of the device case 3 may be provided with elastically deformable spacers 20 used as upper spacers in the second example. In this case, the vertical swing of the device case 3 cannot be completely prevented, but the function of protecting the device by suppressing large swing is sufficiently exhibited.

(4) As the elastically deformable spacer 20, a coil spring may be used instead of using rubber. In addition, it is also possible to mount a resin spacer protruded and urged by a coil spring on the device case 3.

(5) When the movable engagement piece 8 is provided above the rail groove 6, the device case 3 is inclined in the reverse direction to engage the lower engagement piece 2b of the support rail 3 first. In order to be able to operate, the fixed spacer 10 in each example is provided on the upper part,
Insertable spacer 15, elastically deformable spacer 20,
A retractable spacer 23 may be provided at the lower part.

(6) The spacer may be provided only on one of the upper and lower sides, and the spacers of the above embodiments may be arbitrarily combined.

[0047]

As is apparent from the above description, the following effects can be expected according to the present invention.

According to the first aspect of the present invention, since the spacer is provided in the gap formed between the rear surface and the wall surface of the device case engaged with and connected to the support rail, the device is protected from external vibrations. The case does not swing up and down greatly, and the internal structure and circuit of the device case can be prevented from being damaged, and the engagement connection portion can be prevented from being deformed or damaged, and the durability of the rail-mounted device can be improved. .

According to the second aspect of the present invention, the device case can be mounted while being tilted, and can be handled in the same manner as in the prior art. Can be prevented, and the equipment case can be prevented from largely swinging up and down, so that the durability of the rail-mounted equipment can be improved.

According to the third aspect of the present invention, the device case can be mounted while being tilted, and can be handled in the same manner as in the prior art, but when the device case is mounted on the support rail, the device case is greatly oscillated up and down. Can be prevented, and the durability of the rail-mounted device can be improved. In addition, the backlash generated between the support rail and the equipment case due to the elastic force of the elastically deformable spacer can be absorbed, and a mounting state without vibration can be obtained.

According to the fourth aspect of the present invention, the device case can be mounted while being tilted, and can be handled in the same manner as before, but when mounted on the support rails, the device case moves greatly up and down. Can be prevented, and the durability of the rail-mounted device can be improved. In addition, the backlash generated between the support rail and the equipment case due to the reaction force of the spacer pressed against the wall surface can be absorbed, and a mounting state without vibration can be obtained.

According to the fifth aspect of the present invention, when the device case is directly mounted on the wall surface, the screws for extending and retracting the spacer can be used as connection screws for the wall surface. This is effective in terms of handling and parts management.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state where a rail-mounted device of a first example is mounted on a support rail.

FIG. 2 is a perspective view of a detachable supporting portion.

FIG. 3 is a perspective view of a rail-mounted device as viewed from the rear side.

FIG. 4 is a perspective view of a spacer formed integrally with the device case.

FIG. 5 is a side view of a main part showing a mounting procedure.

FIG. 6 is a side view of a main part in a mounted state.

FIG. 7 is a side view of a main part showing a mounting state of different specifications.

FIG. 8 is a perspective view of the rail-mounted device of the second example as viewed from the rear side.

FIG. 9 is a side view of a main part showing the mounting procedure.

FIG. 10 is a perspective view of the rail-mounted device of the third example as viewed from the rear side.

FIG. 11 is a side view of a main part showing the mounting procedure.

FIG. 12 is a perspective view of a rail-mounted device of a fourth example as viewed from the rear side.

FIG. 13 is an exploded perspective view showing a mounting portion of the retractable spacer.

FIG. 14 is a partially cutaway side view showing a mounted state.

FIG. 15 is a partially cutaway side view when directly screwed.

FIG. 16 is an essential part perspective view showing a modification of the retractable spacer.

FIG. 17 is a partially cutaway side view showing a mounted state.

FIG. 18 is a perspective view of a conventional rail-mounted device as viewed from the rear side.

FIG. 19 is a side view of a main part showing the mounting procedure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rail-mounted apparatus 2 Support rail 2a Engagement side 2b Engagement side 3 Equipment case 10 Spacer 15 Spacer 20 Spacer 21 Spacer 23 Spacer 27 Screw W Wall

Claims (5)

[Claims] 1. A rail-mounted device which is mounted on upper and lower engagement sides of a support rail mounted on a wall surface, wherein the device is formed between the wall surface on which the support rail is mounted and the rear surface of the device case. A rail-mounted device, characterized in that at least one of an upper part and a lower part of the gap is provided with a spacer for filling the gap. 2. The method according to claim 1, further comprising: disposing the spacers in the upper and lower portions of the gap, projecting one of the upper and lower spacers integrally from the device case, and connecting the other spacer between the wall surface and the rear surface of the device case. The rail-mounted device according to claim 1, wherein the device is inserted and mounted. 3. The method according to claim 1, wherein the spacers are provided at the upper and lower portions of the gap, one of the upper and lower spacers is integrally protruded from an equipment case, and the other spacer is elastically deformable in a direction facing a wall surface. The rail-mounted device according to claim 1, wherein the device is mounted on an equipment case. 4. The rail-mounted device according to claim 1, wherein the spacer is mounted on the device case such that the spacer can be adjusted to be retracted by a screw that is rotated from the front side of the device case. 5. The apparatus according to claim 1, wherein said spacer capable of moving back and forth is configured to be capable of moving back and forth into the rear surface of the equipment case, and a screw for adjusting the space movement of said spacer is protruded from the rear surface of said equipment case through said spacer which has been moved backward. The rail-mounted device according to claim 4, wherein the device is configured to cause the rail to be mounted.