JPH0227581Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field: This invention relates to a panel mounting device for small control devices such as push button switches and illuminated push button switches.

Prior Art: FIG. 1 shows a conventional example of this invention. As a one-sided method for attaching the control device body 1 to the panel 2, a pair of screws 4, 4 are attached to the metal mount base 3 attached to the device body 1, and the tips 4A, 4A of each screw are brought into contact with the pressing plate 5. , a method is adopted in which the press plate 5 is brought into pressure contact with the back surface of the panel 2 by tightening the screws 4, 4 from the back side of the panel, thereby fixing the device main body 1 to the panel 2. Conventionally, when tightening screws using the above method, if the screws were tightened too tightly, the tips of the screws 4A, 4A
This caused slippage on the abutting surface of the press plate 5, and in addition, warpage occurred in the mount base 3 as shown in FIG.

Purpose of the invention: This invention was devised in view of the above points, and its purpose is to prevent the screws 4, 4 from coming off when tightening, and at the same time to ensure smooth tightening in the above-mentioned mounting device. shall be.

Structure of the device: Figures 2 and 3 show an embodiment of the device. According to the device, a pair of screws 6, 6 are attached to the mount base 3, and the tips are connected to other parts. Body part 6B
The tips 6A, 6A of the screws of the press plate 7 are formed as substantially conical tips 6A, which are tapered more than the diameter of the screws.
This is characterized in that a guide groove 7A for guiding the tip end 6A is formed in the contact portion of A. To explain the pressing plate 7 of this invention in more detail, a window hole 7B that can be fitted into the body of the device main body 1 is formed in the center, and two holes in the longitudinal direction of the pressing plate 7 are formed.
Approximately circular guide grooves 7A, 7A are bored in each of the approximately right-angled flange portions 70, 70. A bent portion 71 is formed at the outer end of the pressing plate 7 toward the side opposite to the panel mounting surface, and guide protrusions 72 are provided inside the groove 7A to protrude in the same direction as the bent portion 71. I'm letting you do it. In addition, although the illustrated example shows the case where a hole is bored in the flange portion 70 as the groove 7A, it can be formed by pressing or punching, etc.
Of course, the groove may be formed by deforming the flange portion. Further, the tip of the screw 6 is not necessarily limited to the shape shown in the drawings, but may be of any shape as long as it can be easily guided by the guide groove.

Function: When tightening screws when installing a panel with such a device, the tips of the screws 6, 6 are first guided into the grooves 7A, 7A by the guide protrusions 72, 72, and when further tightened, the tips of the screws 6, 6 are Since 6A and 6A are fitted into the grooves 7A and 7A,
Even if the screw is firmly tightened, there is no possibility that it will come off. And the guide groove 7A,
Since the diameter of the screw 7A is smaller than the diameter of the body portion 6B of the screw 6, even if the screw is firmly tightened, the screw will not be tightened beyond a certain level, and the conical tip portion 6A will not bite into the panel and damage the panel.

In addition, when the tip 6A of the screw 6 is flat, the guide protrusion 72 and the two corners 7C of the bent portion 71,
Since the screw 6 is supported at three points with 7C, it can be used even if the tip 6A is not a conical screw.

Furthermore, since the bent portion 71 is formed at the outer end of the pressing plate 7, the pressing plate 7 will not warp even if a fairly large window hole 7B is formed, and sufficient strength can be obtained.

Effect of the invention: In this invention, the guide groove 7A is formed in the pressing plate 7 to guide the tip end 6A of the screw 6, so even when the screw 6 is firmly tightened, the screw does not come off from the pressing plate as in the conventional case. Moreover, when tightening the screws, the tips of the screws do not slip and rattle at the contact portion with the pressing plate, so the work of attaching the screws to the panel can be carried out smoothly. The conical screw tip will not dig into the panel and damage the panel, and it can be used even if the screw tip is flat.
The pressing plate does not warp when forming the window hole.

[Brief explanation of the drawing]

FIG. 1 shows a conventional example of a panel mounting device; FIG. 1 shows the state before the screws are tightened, and FIG. Figures 2 and 3 show an embodiment of this invention, with Figure 2 being a longitudinal sectional front view of the main part in the installed state, Figure 3 showing the pressing plate according to this invention, and Figure 3 being a plan view. Figure 2 is a longitudinal sectional front view, and figure C is an enlarged view of the main parts. 1...Control equipment body, 2...Panel, 3...Mount base, 4, 6...Screw, 4A, 6A...
Screw tip, 5, 7...pressing plate, 7A...guide groove.

Claims (1)

[Scope of utility model registration request] In a mounting device, the tip of a screw attached to a mount base is brought into contact with a pressing plate, and the screw is tightened from the rear side of the panel, thereby pressing the pressing plate against the panel and fixing the device body to the panel. , the pressing plate is provided with at least two substantially right-angled flange portions, a bent portion is formed at the outer end of the pressing plate toward the side opposite to the panel mounting surface, and the flange portion is provided with a bent portion of the screw. A substantially circular guide groove for guiding the tip is formed, the diameter of the guide groove is smaller than the diameter of the body of the screw, and a guide protrusion is provided inside the guide groove in the same direction as the bent part. A panel mounting device characterized by being protruded from.