JP4597836B2 - Display unit mounting structure - Google Patents

Description

  The present invention relates to a mounting structure for a display device that is fitted into a control panel of various control devices.

Conventionally, as the mounting structure, a display device is fitted and mounted from the front to the opening of the control panel, and a flange portion provided at the front end of the display device is positioned and abutted on the front surface of the peripheral edge of the opening. Attach the screws through the fixing brackets mounted at least at four locations on the top, bottom, left and right from the rear, and press the front end of the screws tightened toward the front against the back of the control panel to bring the display device inward What has been configured to be drawn has been put into practical use (see, for example, Patent Document 1).
JP-A-8-87304

  According to the above mounting structure, after mounting the display device into the opening of the control panel from the front, it is necessary to mount many fixing brackets and perform screw tightening operations in the panel deployment. The mounting operation of the fixing brackets was troublesome.

  The present invention has been made paying attention to such a situation, and mainly provides an attachment structure that can easily and firmly fix a display device that is fitted and attached to the opening of a control panel from the front. It is the purpose.

  In order to achieve the above object, the present invention is configured as follows.

The first invention is a display device mounting structure in which the display device is fitted and fixed to the opening of the control panel from the front,
A flange provided at the front end of the display device is positioned and brought into contact with the front surface of the peripheral edge of the opening, and a screw is inserted through the fixing bracket fixedly attached to the display device at the back of the control panel from the rear, and directed forward. The front end of the screw that is tightened is pressed against the back of the control panel, and the display device is pulled toward the inside of the panel.
The fixing bracket is formed of an elongated plate material along the opposing outer surface of the display device, and a plurality of locking portions provided at a plurality of longitudinal positions of each fixing bracket are formed on the opposing outer surface of the display device. Each is engaged with the engaging part, and the screw is inserted through both ends of each fixing bracket from behind ,
The locking portion of the fixing bracket is constituted by a locking piece that protrudes and protrudes at a plurality of positions in the longitudinal direction of the fixing bracket, and the locking piece engages the engaging portion on the outer surface of the display device. Composed of a plurality of engaging holes,
The locking piece is configured to bend and bend obliquely, and a tightening reaction force acting on the locking piece locked in the engaging hole is configured to act in a direction to increase the bending of the locking piece. To do.

  According to this configuration, in order to mount and fix the display device on the control panel, first, the display device is fitted into the opening of the control panel from the front surface, and the flange portion provided at the front end portion of the display device is positioned and brought into contact with the front surface of the peripheral edge of the opening. . Next, on the back part of the control panel, a pair of fixing brackets are arranged along the opposing outer surfaces of the display device, and a plurality of locking portions provided on each fixing bracket are formed on the opposing outer surfaces of the display device. The fixing brackets are fixed to the back of the control panel by tightening the screws that have been installed through the both ends of each fixing bracket and tightening the screw tips against the back of the control panel. The display device, which is displaced away from the base plate and is locked to the fixing bracket at a plurality of positions, is drawn toward the inside of the panel. As a result, the display device can be firmly fixed by strongly pressing the flange of the display device against the front surface of the periphery of the opening.

Therefore, according to the first aspect of the present invention, even if a large number of locking points for drawing in the display device are provided, it is only necessary to lock and attach the pair of fixing brackets to the opposing outer surface of the display device. The display device can be fixed easily and quickly even in a narrow work space.
Further, the tightening reaction force acting on the locking piece along with the screw tightening acts as a bending force on the locking piece, and the locking piece is somewhat elastically deformed and locked in the engagement hole. Accordingly, the display device is elastically pulled toward the inside of the panel at a plurality of locking points, and can be firmly fixed to prevent looseness even if an elastic material such as a spring washer is not provided at the screw tightening portion. It can be carried out. In addition, the dimensional error at each locking part is also absorbed by the elastic deformation of the locking piece, so that reliable locking is performed at all the locking parts.
Further, the more the locking piece is deformed by the tightening reaction force, the deeper the engagement hole is engaged, and there is no possibility that the engagement is disengaged due to excessive tightening.

The display device mounting structure according to the second invention is the above first invention,
The rib is refracted over the entire length in the longitudinal direction of the fixing bracket.

  According to this configuration, even if the fixing bracket is elongated, the bending rigidity is high due to the ribs extending over the entire length, and the fixing bracket is bent or twisted even if a large screw tightening reaction force is applied. The display device can be firmly fixed and supported by applying a sufficient force to each locking portion.

A display device mounting structure according to a third aspect of the present invention is the first or second aspect of the invention,
The locking portion of the fixing bracket is constituted by a locking piece that protrudes and protrudes at a plurality of positions in the longitudinal direction of the fixing bracket, and the locking piece engages the engaging portion on the outer surface of the display device. It is characterized by comprising a plurality of engagement holes.

  According to this configuration, the tightening reaction force acting on the locking piece along with the screw tightening acts as a bending force on the locking piece, and the locking piece is somewhat elastically deformed and locked in the engagement hole. Accordingly, the display device is elastically pulled toward the inside of the panel at a plurality of locking points, and the display device can be firmly fixed to prevent looseness even without an elastic material such as a spring washer at the screw tightening portion. It can be carried out. In addition, a dimensional error at each locking portion is also absorbed by the elastic deformation of the locking piece, and reliable locking is performed at all the locking portions.

The display device mounting structure according to a fourth aspect of the present invention is the above third aspect,
The locking piece is configured to bend and bend obliquely, and a tightening reaction force acting on the locking piece locked in the engaging hole is configured to act in a direction to increase the bending of the locking piece. To do.

  According to this configuration, the more the locking piece is deformed by the tightening reaction force, the deeper the engagement hole is engaged, and there is no possibility that the engagement is disengaged due to excessive tightening.

A display device mounting structure according to a third invention is any one of the first to fourth inventions,
A main body case of the display device is configured by a front case having the flange portion at a front end and a rear case coupled to the front case, and an engaging portion to which the locking portion of the fixing bracket is locked is provided in front. It is provided in the case.

  According to this configuration, the rear case can be removed even when the display device 1 is fixed to the control panel using the fixing bracket, and maintenance after mounting can be easily performed.

  As described above, according to the present invention, it is possible to easily and firmly fix the display device fitted into the opening of the control panel from the front.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 is a perspective view of the display device 1 viewed from the front side, and FIG. 2 is a perspective view of the display device 1 viewed from the back side. This display device 1 is used for operation status display and data display in various control devices and industrial facilities, and the case body 2 has a front case 2A and a rear case 2B joined back and forth. A front and rear case 2A is assembled with a liquid crystal display panel 3 and various information input / output sections are provided on the back of the case body 2.

  As shown in FIG. 4, this display device 1 is fitted and fixed from the front to a rectangular opening 5 formed in a control panel 4 such as a control panel, and is provided at the front end of the case body 2. The flange portion 2f is abutted and supported on the front surface of the periphery of the opening 5, whereby positioning in the front-rear direction is performed.

  A pair of left and right fixing brackets 6 are used to fix the display device 1 fitted in the control panel 4. The fixing bracket 6 is made of a vertically long and thin plate material that has been punched and pressed, and locking pieces 7 as locking portions for supporting the display device are folded and protruded at two positions in the longitudinal direction. A protruding piece 9 having a screw hole 8 is refracted and extended at both upper and lower ends of the fixing bracket 6. Further, the rib 10 is refracted in the opposite direction to the projecting piece 9 over the entire length of the fixing bracket 6.

  On the other hand, on the left and right outer surfaces of the main body case 2 in the display device 1, a pair of upper and lower metal support portions 11 are provided in a rear-side cantilever shape with a vertical interval corresponding to the vertical interval of the locking piece 7. In this metal support 11, a pair of front and rear rectangular engagement holes 12 are formed as engaging parts for engaging the locking pieces (locking parts) 7 of the fixing metal 6.

  A procedure for mounting and fixing the display device 1 to the control panel will be described below. First, the display device 1 is fitted into the opening 5 of the control panel 4 from the front surface, and the flange portion 2 f provided at the front end of the display device 1 is positioned and brought into contact with the front surface of the periphery of the opening 5. Next, on the back portion of the control panel 4, the pair of fixing brackets 6 are arranged along the opposing outer surfaces of the display device 1, and the locking pieces 7 provided on the fixing brackets 6 are opposed to each other in the display device 1. Locked into the engagement holes 12 formed on the outer side surfaces, the screws 13 that have been through-mounted in advance on both ends of each fixing bracket 6 are tightened from the rear, and the front ends of the screws 13 are pressed against the back of the control panel 4 Then, the fixing bracket 6 is displaced away from the back surface of the control panel 4, and the display device 1 locked to the fixing bracket 6 at four positions is drawn toward the inside of the panel. Accordingly, the display device 1 can be firmly fixed by strongly pressing the flange portion 2 f of the display device 1 against the front surface of the periphery of the opening 5.

  In this case, even if the fixing bracket 6 is formed of an elongated plate material, the fixing bracket 6 has a high bending rigidity due to the rib 10 extending over its entire length, so that it is fixed even when a large screw tightening reaction force is applied. It is suppressed that the metal fitting 6 is bent or twisted.

  Further, the tightening reaction force acting on the locking piece 7 as the screw is tightened acts as a bending force on the locking piece 7, and the locking piece 7 is somewhat elastically deformed and locked to the engagement hole 12. Accordingly, the display device 1 is elastically pulled toward the inside of the panel at the four locking portions, and the firm fixation that prevents the play from occurring is performed. In addition, a dimensional error at each locking point is also absorbed by the elastic deformation of the locking piece 7, and a reliable locking is performed at all the locking points.

  Further, each locking piece 7 of the fixing metal fitting 6 is provided to bend and bend obliquely rearward, and the tightening reaction force acting on the locking piece 7 locked to the engagement hole 12 greatly increases the bending of the locking piece 7. It is configured to work in the direction (forward). Therefore, as the locking piece 7 is deformed by the tightening reaction force, the engagement hole 12 is deeply engaged.

  The present invention can also be implemented in the following forms.

  (1) As shown in FIG. 5, if the rigidity of the fixing metal fitting 6 is increased, for example, by increasing the plate thickness, the rib 10 may not be provided.

  (2) Depending on the specifications of the main body case 2, a pair of horizontally long fixing brackets 6 may be provided.

  (3) The engaging portion provided on the fixing metal fitting 6 can be formed as an engaging hole, and the engaging portion provided on the outer surface of the display device 1 can be configured by an engaging protrusion inserted into the engaging hole.

It is the perspective view which looked at the display apparatus from the front side. It is the perspective view which looked at the display apparatus and the fixing metal fitting from the back side. Rear view of display device with mounting bracket The fixed state of the display device is shown, (a) is a side view, (b) is a plan view of the main part, and (c) is a cut-out plan view of the main part. It is the perspective view which looked at the metal fitting for fixation of a display apparatus and another Example from the back side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Main body case 2A Front case 2B Rear case 2f Flange part 4 Control panel 5 Opening 6 Fixing bracket 7 Locking part (locking piece)
10 Rib 12 Engagement part (engagement hole)
13 Screw

Claims (3)

A display device mounting structure in which the display device is fitted and fixed to the opening of the control panel from the front,
A flange provided at the front end of the display device is positioned and brought into contact with the front surface of the peripheral edge of the opening, and a screw is inserted through the fixing bracket fixedly attached to the display device at the back of the control panel from the rear, and directed forward. The front end of the screw that is tightened is pressed against the back of the control panel, and the display device is pulled toward the inside of the panel.
The fixing bracket is formed of an elongated plate material along the opposing outer surface of the display device, and a plurality of locking portions provided at a plurality of longitudinal positions of each fixing bracket are formed on the opposing outer surface of the display device. Each is engaged with the engaging part, and the screw is inserted through both ends of each fixing bracket from behind ,
The locking portion of the fixing bracket is constituted by a locking piece that protrudes and protrudes at a plurality of positions in the longitudinal direction of the fixing bracket, and the locking piece engages the engaging portion on the outer surface of the display device. Composed of a plurality of engaging holes,
The locking piece is configured to bend and bend obliquely, and a tightening reaction force acting on the locking piece locked in the engaging hole is configured to act in a direction to increase the bending of the locking piece. Display device mounting structure. In the mounting structure of the display device according to claim 1,
A mounting structure for a display device, wherein a rib is refracted over the entire length in the longitudinal direction of the fixing bracket. In the mounting structure of the display device according to claim 1 or 2 ,
A main body case of the display device is constituted by a front case having the flange portion at a front end and a rear case screwed to the front case, and an engaging portion to which the fixing portion of the fixing bracket is locked is provided. A mounting structure for a display device, which is provided in a front case.

Images