JPH0436415Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a triaxial support structure for a security sensor.

[Technical background]

Security devices monitor target areas using various sensors. For example, hot-ray sensors used to detect intruders monitor a specific direction of an area of interest, typically a specific room. Here, this type of sensor is used by being attached to a wall surface, etc., and it is necessary to be able to arbitrarily select the pointing direction of the sensor. To do this, you need to use a three-way sensor like a gimbal.
It is necessary to install it on a support base of the shaft structure.

However, this type of triaxial structure has disadvantages in that it is complex in structure and expensive.

[Purpose of the invention] The present invention has been made in view of the above points, and an object thereof is to provide a triaxial support structure for a security sensor that has a simple structure and can be manufactured at low cost.

[Summary of the idea]

In order to achieve this objective, in the present invention, a first plate-like member that rotates in a plane approximately parallel to the mounting surface is
The first member is supported by a shaft, and a stopper that contacts a protrusion provided on the first member is supported with some play, and a substantially U-shaped second member is provided on the rising portion rising from the first member. A three-axis support structure for a security sensor is provided, in which the central part of the member is supported by a second shaft, and the sensor is supported between the ends of the second member by a third shaft.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows only the essential parts of the triaxial support structure of the security sensor according to the present invention. In the figure, reference numeral 1 denotes a base material, such as a case body, on which a stopper pin 1A is provided. A rotating member 2 having a pair of claws 2A, 2A on its periphery is arranged so as to sandwich this stopper pin 1A. The length of the claws 2A, 2A corresponds to the amount of free movement of the rotating member 2. A contact portion 2B is provided at a position slightly closer to the inner circumference than the circumference of the rotating member 2.
A first member, that is, a rotary plate 3 is coaxially supported with the rotating member 2 so that the protrusion 3A provided in the punched hole of the protruding portion comes into contact with the protrusion 3A.

This rotary plate 3 has a rising part that rises at an angle less than perpendicular to the rotating surface, and a second member, that is, an arm 4, whose central part is supported by a second shaft near the upper end of this rising part. A third axis is provided between both ends, and in the example illustrated by this third axis, a reflecting mirror 5 is used to focus the incident heat rays and provide it to a sensor (not shown).
is pivoted.

FIG. 2 shows a side view of the mechanism shown in FIG. 1 with a reflecting mirror attached. As can be seen from FIG. 2, the rotating member 2 and the rotary plate 3 are arranged on the same axis and overlapped.

In the mechanism shown in FIGS. 1 and 2, when the rotary plate 3 is rotated clockwise, the protrusion 3A contacts the contact portion 2B of the rotary member 2, causing the rotary member 2 to rotate clockwise. . The rotating member 2 has one claw 2
A rotates until it comes into contact with the stopper pin 1A and stops.

Next, when rotating the rotary plate 3 counterclockwise, it becomes approximately 1
After rotating, the protrusion 3A of the rotating plate 3 touches the rotating member 2.
The rotating member 2 is rotated counterclockwise by the amount of free movement. The rotating member 2 rotates until the other claw 2A comes into contact with the stopper pin 1A. Here, the spacing between the claws 2A, 2A of the rotating member 2 is quite wide, that is, the angle is larger than the sum of the widths of the protrusion 3A of the rotating plate 3 and the abutment portion 2B of the rotating member 2. It is provided. Therefore, when the rotary plate 3 is rotated to its maximum extent, it can rotate over a range of more than 360°.

Then, when the arm 4 is rotated around the second axis and the reflecting mirror 5 is further rotated around the third axis, two areas bounded by the bottom surface of the case body 1, that is, the plane parallel to the rotating member 2 and the rotating plate 3, are formed. For one of them, the reflector or sensor can be oriented in any direction.

Here, the reflective mirror 5 is provided with a heat ray sensor 11 and a printed circuit board 12, and a shielded wire 14 is used to connect these to a circuit 13 attached to the base material 1. This shield wire 14
For example, if the rotary plate 3 is rotated far beyond 360 degrees, it may become entangled with the rising portion of the rotary plate 3 and eventually break. In order to prevent such a situation, the rotatable range of the rotary plate 3 is limited to about 360°.

FIG. 3 shows the stopper structure around the first axis of another embodiment of the present invention, in which the stopper pin 1
A' is movably supported within the elongated hole, and after the protrusion 3A of the rotary plate 3 comes into contact with the stopper pin 1A', it can further rotate by a predetermined angle depending on the length of the elongated hole.

FIG. 4 shows the appearance of an embodiment of the present invention assembled into a case, and numeral 1 is integrally formed with the case shown in FIGS. 1 to 3 and houses a sensor element. Although the lower parts of the rotating member 2 and rotating plate 3 in FIGS. 1 to 3 are not shown in this figure,
A rising portion rising from the rotary plate 3, an arm 4 pivotally supported by the rising portion, a reflecting mirror 5 thereon, and light emitters 6 and 7 incorporated in the reflecting mirror 5 are shown. The light emitter 6 is for adjusting the direction of the reflecting mirror, and is composed of a light emitting diode and a light guide, and irradiates the light generated by the light emitting diode in the pointing direction of the reflecting mirror 5. Therefore, the pointing direction of the reflector can be confirmed with the naked eye. Further, the light emitter 7 lights up to indicate the operation of the sensor. Since both of the light emitters 6 and 7 are not used at the same time, the switch 8 is used to switch between them. 9 is a translucent cover that hides each of the above elements.

[Effect of idea]

As described above, the present invention provides the first plate-like member with the first plate member.
A second shaft is provided on a rising portion rising from the first member to pivotally support a substantially U-shaped second member, and the end portion of the second member is Since the sensor is pivotally supported by providing a third shaft therebetween, the sensor can be oriented in any direction visible from the mounting surface. Moreover, since this support structure has a plate-like member as its main component, it is easy to manufacture and can be constructed at low cost.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the main part of the first embodiment of the present invention, FIG. 2 is a side view of the main part of the embodiment shown in FIG.
Figure 3 is a perspective view of the main parts of the second embodiment of the present invention;
The figure is a diagram showing the appearance of an embodiment according to the present invention. DESCRIPTION OF SYMBOLS 1... Base material, 2... Rotating member, 3... First member (rotating plate), 4... Second member (arm member), 5...
...Reflector, 6... Light emitter for direction adjustment, 7... Light emitter for alarm, 8... Light emitter switching switch, 9...
Cover, 11... Heat ray sensor, 12, 13...
Printed circuit board, 14...shielded wire.

Claims (1)

[Claims for Utility Model Registration] A first plate-shaped member having a protrusion and a rising portion on its periphery and supported so as to be rotatable around a first axis; a stopper that can be moved slightly together; a second member whose plate material is bent so as to form a substantially U-shape and is pivotally supported on a second shaft provided at a rising portion of the first member; A triaxial support structure for a security sensor, comprising a third member pivotally supported by a third shaft provided at both ends of the second member.