JPH0743890Y2 - Cord switch push plate structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> This invention relates to a push plate structure of a cord switch.

<Problems to be solved by this invention> A cord switch has already been proposed in Japanese Utility Model Laid-Open No. 61-133922, but if this cord switch has a weak pushing force, the pushing force is increased in the cord extension direction. There is a problem in that the switches do not operate in a distributed manner. The present invention is intended to solve such a problem.

<Structure of the Invention> The present invention is a push plate attached to the entire length of the outer surface of a cord switch stretched on a door or a wall surface, and the push plate has parallel ribs formed on both sides sandwiching the cord switch on the inner surface. And a small gap for partitioning the parallel ribs are alternately arranged in parallel, and a small ridge extending in a direction traversing the outer surface of the cord switch is provided in the middle of each parallel rib. It is in.

<Embodiment> Hereinafter, the present invention will be described in detail with reference to an attachment example for preventing the automatic opening / closing door from being pinched.

An elastic member 2 having a U-shaped cross section is fitted to the entire length of the vertical edge 1a on the door-stop side of the sliding door type automatic opening / closing door 1. Between the relative wall surface of the vertical edge 1a and the elastic member 2, the shape-retaining plate 3 is in contact with the vertical edge 1a,
A cord switch 4 is stretched in contact with the shape-retaining plate 3, and a push plate 5 is inserted on the outer surface of the cord switch 4. As shown in FIG. 5, the push plate 5 is formed by processing a thin plate made of synthetic resin such as polycarbonate. The push plate 5 has a length of about 30 mm on both sides of the push switch 5 on the side of the chord switch 4 on the chord switch 4 side. The parallel ribs 6a, 6b each having a ridge shape and the small gaps 7 for partitioning the parallel ribs 6a, 6b are alternately arranged in parallel, and the parallel ribs 6a, 6b are arranged in the middle of the parallel ribs 6a, 6b in a direction crossing the outer surface of the cord switch 4. It consists of a small ridge 8. In addition, 2a and 2b are ridges for retaining the shape retaining plate 3 provided in the middle of both sides inside the elastic member 2, and 3a and 3b are shape retaining plates 3.
Locking grooves 2c and 2d provided on both sides of the holding plate 2 are holding grooves for the pressing plate 5.

With the above configuration, although the push plate 5 is thin, it is a parallel rib.
Rigidity is obtained at the portions where 6a and 6b are provided, and the rigidity is divided by the portion of the small gap 7 that acts as a flexure. Therefore, as shown by the arrow in FIG. When pushed in the middle of the portion where the 6a and 6b are provided, the pushing force is deflected only by the parallel gaps 6a and 6b pushed by the small gaps 7 on both sides which are not dispersively transmitted in the longitudinal direction of the pushing plate 5. In particular, the pressing force is concentrated on the portion of the small ridge 8 between the parallel ribs 6a and 6b, and the cord switch 4 is pressed to perform the switch operation.
If you press in the small gap 7 as shown by the arrow in Fig. A,
The pushing force of the pushing plate 5 is two sets of parallel ribs 6a, 6 that sandwich the small gap 7.
Although it is transmitted to only the b portion and is divided into two, it is pushed because the lever principle using the bending and bending portion of the small gaps 7 and 7 on the outer sides of the two sets of parallel ribs 6a and 6b as a fulcrum acts. When the force is doubled and concentrated on the small ridges 8 and 8 of the two sets of parallel ribs 6a and 6b, the cord switch 4 is pushed and the pushing force is applied to the middle of one parallel rib 6a and 6b. The switch operation is performed with almost the same pressing force.

FIG. 1 shows that the sliding door type automatic opening / closing door 1 is almost closed while a person is passing through. When the arm a hits the door 1 and pushes the push plate 5 through the elastic member 2, the parallel portions Since only the portion of the push plate 5 surrounded by the ribs 6a, 6b is pushed and this pushing force is concentrated on the small protrusions 8 to push the cord switch 4, the cord switch 4 operates accurately, In this case, the door 1 is moved to the open side to prevent the accident of being caught by the door. By providing the small protrusions 8, the cord switch 4 can be reliably operated even when the elastic member 2 is pushed obliquely as shown in FIG.

Although the embodiment has been described in the example of preventing the automatic opening / closing door from being caught, when the cord switch is stretched on the wall surface or the floor surface as a switch for an emergency stop of the machine, the push plate having the above configuration is provided on the outer surface. The same effect can be obtained by installing it.

<Effect of the Invention> In the present invention, parallel ribs of appropriate length are sectioned side by side on the inner surface of the thin push plate attached to the outer surface of the cord switch, so that the push plate is given rigidity and at the same time pushes the pushing force. By pushing only the portion surrounded by the parallel ribs at the specified position, and the pushing force is concentrated on the small ridge 8 provided in the middle of the parallel rib, the cord switch can be accurately operated by a relatively weak pushing force. The effect of being able to do is produced. Further, the effect that the cord switch is accurately operated also occurs when the pushing force is applied from the diagonal direction of the pushing plate.

[Brief description of drawings]

FIG. 1 is a front view showing a device for preventing pinching of an automatic opening / closing door as one use example of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 2, and FIG. FIG. 4 is a cross-sectional view of the small ridge portion showing the pressing state of the cord switch by the pushing force from an oblique direction, FIG. 5 is a partial plan view of the pushing plate, and FIG. FIG. 6b is an explanatory view showing a pressing portion of the cord switch by the pressing plate, and FIG. 7a is a pressing force applied to a gap portion of the parallel ribs. 7b is an explanatory view showing a pressing portion of the cord switch by the pressing plate, 1 is an automatic opening / closing door, 2 is an elastic member, 3 is a shape retaining member, 4 is a cord switch, 5 is a push plate, 6a and 6b are parallel ribs, 7 is a section gap,
8 is a small ridge.

Claims (1)

[Scope of utility model registration request] 1. A push plate attached to the entire length of the outer surface of a cord switch stretched on a door or a wall surface, the push plate being parallel to the parallel ribs having a ridge shape on both sides sandwiching the cord switch on the inner face. A push plate structure for a cord switch, characterized in that small gaps for partitioning the ribs are alternately arranged in parallel, and a small ridge extending in a direction crossing the outer surface of the cord switch is provided in the middle of each parallel rib.