JP4604720B2 - Locking device for operation panel - Google Patents

Description

  The present invention relates to a lock device for an operation panel installed on a wall surface of a building.

  In recent years, wall-mounted operation panels have been increasingly used. In a wall-mounted operation panel, the back plate is also fixed to the wall as a mounting plate for the operation panel, but components and wiring are arranged in a space between the back plate and the front plate that covers the back plate. By doing so, the operation panel is attached to the surface of the wall without the box portion previously embedded in the wall. In this case, the method of attaching the front plate to the back plate is fastened and fixed with screws or the like at an inconspicuous position on the lower surface of the operation panel. (For example, see Patent Document 1)

  By the way, as a method of mounting without using screws or the like, a method of mounting the surface plate of the operation panel by engaging the leaf spring and the protrusion so that the frictional force at the time of pulling out becomes larger than the frictional force at the time of insertion. There is. (For example, Patent Document 2)

Japanese Patent Application Laid-Open No. 9-315711, page 6, FIG. Japanese Patent Laid-Open No. 9-86813, page 4, FIG.

  However, the mounting method of the surface plate shown in the above-mentioned Japanese Patent Application Laid-Open No. 9-315711 has many design limitations because it uses screws and the like, and the work for attaching and detaching the surface plate is troublesome. It took time. Furthermore, since the screws of the fixing part can be seen from the outside, there is a possibility of theft or mischief.

  Also, a bent leaf spring and a protrusion that fits the bent portion shown in Japanese Patent Laid-Open No. 9-86813 are provided, and the frictional force at the time of attachment and removal is differentiated, so that it is larger at the time of removal. Although power is required, since anyone can remove it without using a tool, it was insufficient as an anti-theft measure.

  The present invention was made to solve the above-described problems. The surface plate can be attached and detached without using a screw having many restrictions in design, and can be easily removed using a jig. A safe locking device is obtained.

  The present invention includes a leaf spring in which one end is fixed to a back plate and an intermediate portion is bent in a mountain shape and a through hole is provided on the fixed slope, and a through hole is provided by the elastic force of the plate spring provided on the back surface of the front plate. A protrusion that is locked to the through-hole, and a predetermined gap is formed between a part of the tip of the protrusion and the fixed-side inclined surface of the leaf spring. An opening for inserting the unlocking jig is provided on the side surface of the facing surface plate.

  In this invention, the front and back plates of the front plate and the back plate that are slid to be mounted and removed have a clearance between the front end of the projection and the leaf spring in a state where the locking projection on the back surface of the front plate is locked and locked by a through hole provided in the leaf spring. Therefore, by releasing a plate-shaped release jig along the leaf spring from the slit-shaped unlocking opening provided at the end of the surface plate or back plate, the lock is released and the surface plate is removed. Can be removed from the back plate.

Embodiment 1 FIG.
FIG. 1 shows a side view of the operation panel 3. In general, a display, a switch, a button, etc. for the operation panel 3 to function are arranged on the front surface (not shown). Hereinafter, an example of the locking device for the operation panel 3 according to the present invention will be described in detail. That is, FIG. 2 is an exploded perspective view of the operation panel, showing a state in which the surface plate 4 is removed from the back plate 5, and the surface plate 4 is attached to the back plate 5 by sliding downward on the back plate 5 from above. It is configured to be slid and removed. The surface plate 4 is provided with side ribs 4a on both sides of the inner side, and is attached by engaging the side ribs 4a with upward hooks 5a provided on the back plate 5.

  In addition, a leaf spring 6 bent in a mountain shape is disposed at the lower end of the back plate 5 with one mountain hem side as a free end on the upper side and the other mountain hem side as a fixed side on the lower side. A slit-like opening 4b into which an unlocking jig such as a thin steel plate can be inserted is formed at the lower end of the surface plate 4. A protrusion 7 is integrally formed on the back surface of the surface plate 4, and a fixed side of the plate spring 6 is provided. A through hole 8 is formed in the angled slope.

  The opening 4b, the leaf spring 6, the through-hole 8 and the projection 7 of the leaf spring are on a line in the direction in which the surface plate 4 slides, and the projection 7 is located at the position where the surface plate 4 and the back plate 5 are locked. It is configured to be engaged with the through hole 8 by an elastic force. FIG. 3 shows an enlarged perspective view of the leaf spring 6 and shows the positional relationship between the protrusion 7 and the through hole 8 in FIG. The back plate 5 is usually fastened and fixed to the wall surface with anchor bolts (not shown).

  When attaching the front plate 4 to the back plate 5, the lower end of the side rib 4 a of the front plate 4 is put on the upper end of the upward hook 5 a of the back plate 5 and slid downward. FIG. 4 is a cross-sectional view of the main part when the front plate 4 is attached. The protrusion 7 formed on the back surface of the front plate 4 moves from the free end side of the spring against the elastic force of the plate spring 6 bent in a mountain shape. Then, the state before locking that is located at the top of the leaf spring 6 beyond the inclined surface on the free end side is shown.

  FIG. 5 is a cross-sectional view of the main part when the surface plate 4 is locked. The surface plate 4 slides further downward, and the projection 7 reaches the through-hole 8 formed on the fixed inclined surface of the plate spring 6. 4 is a state after locking, in which the protruding side surface 7a in the direction in which 4 slides downward exceeds the upper edge portion 8a of the through hole, and the leaf spring 6 compressed by the protrusion 7 is released to return to its original shape. Indicates. At this time, since the through-hole edge 8a of the leaf spring 6 has returned to the position where the projection 7a is locked behind the sliding direction of the projection 7, the surface plate 4 is moved upward by the projection 7 with the through-hole 8. The lower side is locked by hooks 5a by side ribs 4a.

  With the front plate 4 attached to the back plate 5 and locked in this way, in the present invention, as shown in FIG. 5, the tip 7b of the projection 7 is locked with the leaf spring 6 and the projection gap 7c remaining. Thus, the height, the cross-sectional shape of the protrusion 7, the shape and position of the through-hole 8 of the leaf spring 6 are designed.

  Further, the cross-sectional shape of the projection 7 can be various shapes such as a circle, a rectangle and a triangle in addition to an ellipse according to the shape of the through-hole 8, but the length of the projection 7 in the sliding direction is also the same. It is preferable to make the protrusion gap 7c larger by making the length of the protrusion 7 longer than the length of the protrusion 7. The width of the protrusion 7 perpendicular to the sliding direction is shorter than the width of the through hole 8 by a predetermined dimension, The shape enters the through hole 8.

  The operation in the case of removing the front plate 4 locked to the back plate 5 with the above configuration will be described with reference to FIGS. Here, FIG. 6 shows a bottom perspective view of the operation panel, and FIGS. 7A to 7C are cross-sectional explanatory views of main parts of the operation panel unlocking operation. From the unlocking opening 4b at the lower end of the surface plate 4, for example, a linear steel thin plate releasing jig 10 is inserted. The release jig 10 is made of a material having a predetermined hardness enough to extend the bent spring 6 over the elastic force of the plate spring 6, and the width of the release jig 10 is set to be equal to the width of the release spring 10. The predetermined width is set larger than the width in the direction perpendicular to the sliding direction of the through-hole 8 formed in.

  As shown in FIG. 7A, when the release jig 10 is inserted from the unlocking opening 4b, the protrusion formed between the tip of the protrusion 7 and the leaf spring 6 with the inclination of the leaf spring 6 as a guide. It reaches the part gap 7c. When the release jig 10 is inserted deeper against the elastic force of the leaf spring 6, the release jig 10 is placed between the leaf spring 6 and the tip of the protrusion 7 as shown in FIG. 7B. As a result, the through-hole 8 of the leaf spring 6 that has locked the protrusion 7 is released from the locking position, and the locking is released. Therefore, as shown in FIG. 7C, when the surface plate 4 is slid upward, the tip of the projection 7 slides on the surface of the release jig 10 while compressing the leaf spring 6, and the side rib 4 a of the surface plate 4 is the back plate 5. The front plate 4 can be detached from the back plate 5 by sliding upward to a position where it is removed from the hook 5a.

  The above configuration eliminates the need for a mounting space such as a screw required for attaching / detaching the surface plate 4 to the lower end of the operation panel 3, so that the end surface of the surface plate 4 can be made thin or curved, and various designs are possible. Can be supported. Further, the surface plate 4 can be easily attached and detached, which eliminates the need for screwdriver and screw storage and shortens the installation and maintenance work time. Furthermore, unlike the fastening with screws, the locking portion is not visible from the outside, so that mischief such as theft can be prevented.

  It is also possible to change the slide direction from the vertical direction to the horizontal direction by rotating the operation panel 3 by 90 degrees while maintaining the configuration of the first embodiment. Moreover, the present invention can be applied and the same effect can be obtained as long as it is a panel device that can be slid to mount the surface plate 4 other than the operation panel.

  In the first embodiment, the shape of the release jig 10 shown in FIG. 6 has been described as a straight flat plate. However, the tip of the release jig 10 is “h” in the direction opposite to the inclination of the leaf spring 6. The tip of the release jig 10 shown in FIG. 7 (A) is easily hooked into the protrusion gap 7c by bending it into a U-shape, so that the lock can be released more reliably.

  In the above description, the unlocking opening 4b for inserting the releasing jig 10 is formed by cutting out a part of the lower portion of the surface plate 4. However, a slit-like through hole is formed in the lower portion of the surface plate 4. In addition, when the lower part of the back plate of the operation panel has a surface, an unlocking opening may be formed in the lower part of the back plate.

Embodiment 2. FIG.
FIG. 8 is an exploded perspective view of the operation panel according to the second embodiment of the present invention. In the first embodiment, the projection 7 formed on the back surface of the front plate 4 has an elliptical cross-sectional shape, the shape of the through hole 8 formed in the leaf spring 6 is rectangular, and the hooks 5a on both sides of the back plate 5 are In the second embodiment, the front panel 4 of the operation panel is slid downward from above and attached to the back panel 5 of the operation panel. However, in the second embodiment, as shown in FIG. The shape and the shape of the through hole 18 are also reverse convex, the hook 15a faces downward, and the surface plate 14 is slid upward from below and attached to the back plate 15. The leaf spring 16 does not have a shape bent in a mountain shape as shown in FIG. 8, but may simply be inclined in a direction in which the free end side of the leaf spring 16 is lifted from the back plate 15.

  Further, when the front plate 14 is attached in the second embodiment, the upper ends of the side ribs 14 a on the inner side of the front plate are hooked on the lower ends of the hooks 15 a of the back plate 15 and are slid upward, and the protrusions 17 are engaged with the through holes 18. The surface plate 14 is locked together. When removing the surface plate 14, the releasing jig 10 is inserted from the unlocking opening 14b, the engagement between the projection 17 and the through hole 18 is released, and the surface plate 14 is slid downward.

  In the first embodiment, as shown in FIGS. 4 and 5, the protrusion 7 slides against the elastic force of the leaf spring 6 bent in a mountain shape from the free end side of the leaf spring 6, and the top of the leaf spring 6 is moved. The plate spring 6 returns to its original state and the projection 7 is locked by the through-hole 8 beyond the fixed-side slope, but in the configuration of the second embodiment, the projection 17 is the through-hole 8. The operation of locking will be described in detail with reference to FIGS.

  FIG. 9 shows a detailed view of the reverse convex locking portion before the protrusion 17 is locked, the surface plate 14 slides upward, and the protrusion 17 resists the elastic force of the leaf spring 16 and the fixed side slope of the leaf spring 16. The state before entering into the through-hole 18 in FIG. At this time, the repulsion due to the elastic force of the leaf spring 16 is suppressed at the tip of the protrusion 17 by the through hole edge 18b of the reverse convex through hole 18 corresponding to the convex shoulder. Here, the shape of the through-hole 18 shown in FIG. 9 is a reverse convex shape, but the cross-sectional shape of the protrusion 17 is the cross-sectional shape of the protrusion with the convex bottom portion having an arc shape by taking the corners on both sides of the convex bottom portion. explain.

  Next, FIG. 10 shows a detailed view of the reverse convex locking portion after the protrusion 17 is locked. When the surface plate 14 slides further upward, the protrusion 17 enters the through hole 18 and the leaf spring 16 moves to the protrusion 17. It is released from the press and returns to the original. Here, the cross-sectional shape of the protrusion 17 and the shape of the through hole 18 are made reverse convex so that the through hole edge 18 b corresponding to the convex shoulder of the through hole 18 corresponds to the convex shoulder of the protrusion 17. At the position where the protruding side surface 17b is locked, the surface plate 14 cannot slide downward. Further, since the projection side surface (arc portion) 17a corresponding to the convex bottom of the projection hits the through hole edge 18a corresponding to the convex bottom of the through hole 18, the surface plate 14 can no longer slide upward.

  Accordingly, the front plate 14 is locked so that it cannot slide downward or upward, and the front plate 14 is attached to the back plate 15 of the operation panel and locked. At this time, the height of the protrusion 17, the cross-sectional shape, the shape and position of the through hole 18 of the leaf spring 16 are set so that the tip of the protrusion 17 is locked with the leaf spring 16 and the protrusion gap 17 c left. It is characterized by being.

  When removing the surface plate 14, the same release jig 10 as described in FIG. 7 of the first embodiment is inserted against the leaf spring 16 from the unlocking opening 14 b at the lower end of the surface plate 14, and the protrusion The release jig 10 is inserted between the protrusion 17 and the leaf spring 16 by inserting the release jig 10 into the projection gap 17c formed between the tip of the leaf spring 17 and the leaf spring 16. After releasing the engagement between the projection 17 and the through-hole 18, the front plate 14 is slid downward, the side plate 14 a of the front plate is removed from the hook 15 a of the back plate 15, and the front plate 14 is released from the back plate 15. The

  9 and 10 show the case where the cross-sectional shape of the protrusion 17 of the surface plate 14 and the shape of the through hole 18 of the leaf spring 16 are respectively reversely convex, but the protrusion 17 of FIG. As shown in the detailed view of the reverse concave locking portion later, the shape of the through hole 28 is reverse concave, the cross-sectional shape of the protrusion 27 is also reverse concave, and the outer peripheral portion is circular. However, the configuration other than the cross-sectional shape of the protrusion 27 and the shape of the through hole 28, the operation of locking the surface plate, and the unlocking method are the same as those described above with reference to FIGS.

  With the above configuration, in addition to the various effects described in the first embodiment, the surface plate 14 is also locked downward in the second embodiment, so it is combined with the surface plate 4 of the first embodiment. Thus, it can be applied as a locking means in the case where two or more operation panels are continuously installed up and down. Further, since the protrusions 17 and 27 enter and are locked into the through holes 18 and 28 in the locking direction according to the present invention, the surface plate is locked in all directions in the left and right directions as well as the vertical direction. Became possible.

  In the second embodiment, the surface plate 14 is slid upward from below by the configuration of the hook 15a provided on the back plate 15 of the operation panel, the through hole 18 of the leaf spring 16, and the protrusion 17 and the side rib 14a of the surface plate 14. However, the configuration of the hook 5a, the through hole 8 and the projection 7 described in the first embodiment is replaced with the shape of the hook 15a, the through hole 18 and the projection 17 of the second embodiment. By doing so, the surface plate 14 can be slid and attached from the upper side to the lower side.

  Since the basic arrangement and shape of the projections, leaf springs, through-holes, release jigs and slots for inserting the jigs constituting the locking part of the operation panel surface plate of the present invention are the same, the embodiment 1 and the implementation Since the operation panel lock device according to the second embodiment can be manufactured and assembled in the same manner, productivity can be improved and product cost can be reduced.

Embodiment 3 FIG.
In the first embodiment, as shown in the cross-sectional view of the main part of the operation panel in which the inclined surface is provided at the tip of the protrusion 7 in FIG. The angle of the gap 7c between the tip 7b and the leaf spring 6 can be adjusted. In the second embodiment, the angles of the gap 17c and the gap 27c can be adjusted similarly.

  By adjusting the angle of the gap 7c, the frictional force when sliding the surface plate 4 against the leaf spring 6 and the insertion resistance force when releasing the locking state by inserting the release jig 10 are reduced. Since it can be adjusted, the protrusions have an appropriate insertion resistance according to the friction coefficient depending on the material of the surface plate 4 and the protrusions 7 and the pressing force when the surface plate slides on the back plate 5. The inclination angle of the tip 7b can be set optimally.

  Since the angle of the gap 7c can be changed also by adjusting the inclination angle of the leaf spring 6 bent in a mountain shape, the same effect as the case of changing the inclination angle of the tip of the protrusion 7 can be obtained.

Embodiment 4 FIG.
In the first embodiment and the second embodiment described above, as shown in the cross-sectional view of the main part of the operation panel in which a notch is provided in the protrusion side portion of FIG. By attaching the notch 7d to the portion to be locked by the edge of the hole 8, the engagement between the projection 7 and the through hole 8 is difficult to be released, so that more reliable locking is possible.

It is a side view of the operating panel which shows Embodiment 1 of this invention. 1 is an exploded perspective view of an operation panel showing Embodiment 1 of the present invention. It is an expansion perspective view of the leaf | plate spring which shows Embodiment 1 of this invention. FIG. 3 is a cross-sectional view of the main part of the operation panel when the surface plate is mounted, showing Embodiment 1 of the present invention. FIG. 3 is a cross-sectional view of the main part of the operation panel when the surface plate is locked, showing Embodiment 1 of the present invention. It is a lower end perspective view of the operation panel showing Embodiment 1 of the present invention. It is explanatory drawing of the lock release operation | movement of the operating panel which shows Embodiment 1 of this invention. It is a disassembled perspective view of the operating panel which shows Embodiment 2 of this invention. The protrusion which shows Embodiment 2 of this invention is the reverse convex latching | locking part detailed drawing before latching. The protrusion which shows Embodiment 2 of this invention is the reverse convex latching | locking part detailed drawing after latching. The protrusion which shows Embodiment 2 of this invention is the reverse concave latching part detail drawing after latching. It is sectional drawing of the principal part of the operating panel which provided the inclined surface in the protrusion tip which shows Embodiment 3 of this invention. It is sectional drawing of the principal part of the operating panel which provided the notch in the protrusion side part which shows Embodiment 4 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wall 3 Landing board 4 Front plate 4a Side rib 4b Unlocking opening 5 Back plate 5a Hook 6 Leaf spring 7 Projection 7a Projection 7b Projection tip 7c Projection gap 7d Projection notch 8 Through hole 8a Through hole edge 8b Through-hole edge 10 Release jig 16 Leaf spring 17 Protrusion (convex type)
17a Protrusion 17b Protrusion 17c Protrusion clearance 18 Through hole (convex)
18a Through-hole edge 18b Through-hole edge 26 Leaf spring 27 Protrusion (concave)
27a Protruding portion 27b Protruding portion 27c Protruding portion gap 28b Through hole (concave)
28a Through-hole edge 28b Through-hole edge

Claims (4)

In a lock device for an operation panel that is installed on a wall surface or the like and slides and attaches a surface plate to the back plate, one end is fixed to the back plate, and an intermediate portion is bent into a mountain shape to provide a through hole on the fixed side slope And a protrusion provided on the rear surface of the front plate and locked to the through hole by the elastic force of the plate spring, and the protrusion tip in a state where the protrusion is locked to the through hole. A predetermined gap is formed between a part of the plate spring and the fixed-side inclined surface of the leaf spring, and an opening for inserting an unlocking jig is provided on the side of the surface plate facing the gap. Panel lock device. In a lock device for an operation panel, which is installed on a wall surface or the like and slides and attaches a surface plate to the back plate, one end is fixed to the back plate and the free end is inclined in the direction of lifting from the back plate, and the inclined surface is transparent. A plate spring provided with a hole, and a protrusion provided on the back surface of the front plate and locked to the through hole by the elastic force of the plate spring, with the protrusion locked to the through hole, A predetermined gap is formed between a part of the tip of the protrusion and the fixed inclined surface of the leaf spring, and an opening for inserting a lock release jig is provided on the side of the surface plate facing the gap. A lock device for the operation panel. 3. The operation panel lock device according to claim 1, wherein an inclined surface is attached to a tip of the protrusion. 3. The operation panel lock device according to claim 1, wherein a notch that engages with a through hole edge of the leaf spring is provided on the side surface of the protrusion.

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