JPS5824888B2 - Detection device - Google Patents

Description

[Detailed Description of the Invention] The invention No. 9 is an ultrasonic intrusion detector, a radio wave intrusion detector,
This relates to the structure of the optical intrusion detector, and its purpose is to create a detector that houses both a signal generation part and a reception part, so that both can be adjusted in any direction at the same time, and the warning pressure of the detector is The goal is to make it easier to adjust the area.

This type of intrusion detector is well known in the past, but there are some in which both the signal generation part and the reception part are adjusted completely separately,
As seen in optical intrusion detectors, the signal generating part and the receiving part are housed in a single shield box, and the direction of this shield box can be adjusted, or the signal generating part and the receiving part are connected together. There are devices that adjust only the direction at the same time, but with devices that adjust each direction separately, it is extremely difficult to adjust the directions of the signal generator and receiver in almost the same direction, and even if adjustment is possible, it will take a long time. In short, if the shield box is adjusted, the distance between the signal generator and the receiver must be short, or the adjustment range will be extremely small, making it impractical, especially for ultrasonic or radio wave intrusion detectors. There are many.

Furthermore, in the case where the signal generating part and the receiving part are adjusted at the same time, the adjustment can only be made in one direction, which limits the mounting location of the detector, which poses a problem when it is desired to mount the detector in a place where it cannot be seen by people.

This invention aims to improve the above-mentioned drawbacks, and in a detector that houses both a signal generating section and a receiving section in the internal space of the housing, a core frame that mechanically connects the signal generating section and the receiving section is used. , when the core frame is moved in the axial direction, the angle of the signal generating section and the receiving section is changed simultaneously in plane A, and when the core frame is rotated in the axial rotation direction, the signal is generated in plane B. The detection device is equipped with a means C for changing the angles of the receiving section and the receiving section at the same time.

The detection device of the present invention will be described in detail below based on one embodiment.

° In the figure, 1 is an easter made of insulating material, and partition wall 2 is
, 3 are formed protrudingly, and the back side has a space for storing the printed board 4, the front side has a recess 6 into which the end face of the cover 5 is inserted, and mounting holes 7.8.

The cover 5 is made of a metal plate, and has a plurality of inner surfaces in contact with the outer peripheries of the partition walls 2 and 3, and covers the storage section 10 of the signal generation section 9 and the storage section 12 of the reception section 11, which are partitioned by the partition walls 2 and 3. holes 13, 13, etc. are provided, and a covering made of a porous material such as foamed polyurethane is attached to the outer surface of the hole.

Reference numeral 15 designates a mounting screw for the cover 5, which is screwed into a nut 16 provided on the body 1.

The signal generator 9 includes an ultrasonic transducer 17 made of barium titanate, for example, which is driven by an oscillation circuit provided on the printed board 4, a cylindrical portion 18 that receives the ultrasonic transducer 17, and a fulcrum Q. an upright piece 20 provided with a lateral protrusion 19 and two membrane-like protrusions 21 extending downward and forming a fulcrum P;
and a receiver 22 equipped with.

The receiving section 11 also has a similar configuration, and the ultrasonic transducer 23
The only difference is that it receives sound waves and converts them into electrical signals.

24 is a core frame, which has through holes 25.2 provided in the partition walls 2 and 3.
6, it is a rod-shaped body with a zero-shaped cross section, and has bulges 27 and 28 in the center of the rod whose diameter is smaller than the other parts,
Notches 29 that engage with the holding frame E are provided at both ends.

The cross section of this core frame 24 does not necessarily have to be ◎-shaped (
, it is sufficient to have a non-circular cross-section, and it is not necessary to have a non-circular cross-section over the entire length, and only the retaining portion 31 that engages with the rotary operating body 30 in the axial rotation direction may be sufficient.

The rotary operating body 30 has a through hole 32 formed to have almost the same cross section as the engaging portion 31 of the core frame 24, and a rotary operating portion 34 protruding from a slit 33 of the body 1. 35 may be brought into contact with the inner surface of the base 1 to perform braking, or a braking protrusion 36 may be provided on the side surface.

Reference numeral 37 denotes an axial movement operation body, which includes an axial movement operation part 39 protruding from a slit 38 provided in the base 1, and the core frame 2.
A retaining portion 40 that engages with a bulge 27, 28 provided in 4
．． 40, the shoulder portion 41 is located inside the base 1, and the retaining portion 4
The axially movable operating body 3T is held such that the tips of the 0 are in contact with the core rod 24, respectively.

The number of bulges 27 and 28 may be one, and in that case, the engagement foot 4
It is possible to have a configuration in which the distance is sandwiched by 0.40.

The means C for changing the angle is composed of a holding frame D and a holding frame E.

The holding frame is provided with a shaft 42.2 and crotch-like arm pieces 43, 43, and the arm pieces 43, 43 have a lateral side extending inwardly and forming a fulcrum P with the recess 44 of the two membrane-like protrusions 21 of the receiver 22. Directional projection 45
．． 45, and a bearing protrusion 46 at the end of the shaft 42.
A falling-off prevention part 48 from the recess 47 is provided.

The holding frame E consists of bifurcated arm pieces 43 and 49 extending on both sides of the forked arm pieces 43 of the holding frame, and a connecting portion 51 provided with an engagement hole 50 with the core frame 24. Arm piece 49,4
9 includes a lateral protrusion 19 of the upright piece 20.20 of the receiver 22.
, 19 and an upright piece 53 provided with a hole 52 constituting a fulcrum Q,
53, and guide pieces 54, 54 that engage with the bifurcated arm pieces 43, 43 of the holding frame.

The holding frame E is made of a metal sheet, and the guide pieces 54, 54
may be folded back to hold the arms 43, 43 of the holding frame in a movable state in the axial direction.

The holding frame E may be configured as a holding frame yE' as shown in FIG.

That is, a through hole 55 is provided in the arm piece 43 of the holding frame α instead of the protrusion 45.
A slit 56 is provided in place of the guide pieces 54, 54 of the holding frame E', and a lateral protrusion 57 provided on the receiver 22 is passed through the through hole 55 and the slit 56 to constitute the fulcrum P. But that's fine.

Reference numeral 58 is a pressing spring for preventing the holding frame from falling off, and reference numeral 59 is a clip for engaging and holding the core frame 24 and the holding frame E.

In addition, 60 is a power supply and operation display changeover switch, and 61 is an output of the drive oscillation circuit of the ultrasonic transducer 1T and the ultrasonic transducer 2.
This is a knob that adjusts the degree of amplification of the output amplification circuit No. 3.

62 is an insulating sheet provided on the back side of the printed board 4;
Reference numeral 63 denotes an operation display element protruding from the base 1 to the outside.

The ultrasonic vibrator of the signal generator 9 is driven by the oscillation circuit to generate mechanical vibrations, generating compression waves in the surrounding air, and the period of this compression wave is detected by the intrusion detector. For this reason, it is considered to be in the ultrasonic range that cannot be heard by the human ear.

This ultrasonic wave fills the detection area, and this is the
One ultrasonic transducer is vibrated to generate an electrical signal.

The direction of the signal generator 9 and receiver 11 is adjusted as follows.

When the cover 5 is removed and the axial movement operation unit 39 is moved in the X
4 and moves the core frame 24 in the X direction.

Since the core frame 24 moves in the X1 direction, the holding frame E is pulled in the
Do not move in the direction.

Therefore, the signal generating section 9 moves the upright piece 20 of the receiver 22 around the P fulcrum formed by the recess 44 of the bifurcated projection 21 of the receiver 22 and the lateral protrusion 45 of the arm piece 43 of the holding frame. The lateral protrusion 19 and the upright piece 53 provided on the arm piece 49 of the holding frame E
Since the fulcrum Q constituted by the engagement with the 0 through hole 52 moves in the X1 direction, as shown in FIG.
(see figure).

The amount of adjustment of the angle can be changed by the amount of movement of the axial movement operation section 39.

The receiving section 11 also has the same structure as the signal generating section 9, and has a core frame 24.
Since it is provided at the end opposite to the opposite end, the same angle can be adjusted in the same direction.

Next, when the axial operation unit 39 is moved in the X2 direction, the engagement foot 40 of the axial operation unit 37 engages with the bulge 27 of the core frame 24, moving the core frame 24 in the X2 direction, and moving the core frame 24 to the fulcrum. Since Q moves in the X2 direction, it becomes like the opening in Figure 9.

When further moved in the X2 direction, the receiver 22 tilts in the opposite direction to that shown in FIG. 9A.

When the core frame moves in the axial direction in this way, since the through hole 32 of the axial rotation direction rotation operating body 300 has the same cross-sectional shape as the engaging part 31 of the core frame 24, the engaging part 31 of the core frame 24 No axial force is applied to the axial rotation direction rotation operating body 30 by sliding through the through hole 32.

Next, when the shaft rotation operation body 30 is moved in the Yl direction by moving the shaft rotation direction rotation operation section 34 with a finger, the core frame 24 and the shaft rotation direction rotation operation body 30 penetrate the core frame 24 having a non-circular cross section. Since they are engaged in the hole 32, the core frame 24 is
Rotate in one direction.

Therefore, the holding frame E connected to the core frame 24 is also rotated in the X1 direction, and the holding frame E, which is slidably engaged only in the axial direction, is also rotated in the Yl direction using the shaft 42 as a fulcrum. .

(See FIG. 10) Since the signal generating section 9 and the receiving section 11 are engaged with both ends of the core frame 24, they simultaneously rotate in the same Yl direction.

Similarly, when the shaft rotation direction rotation operating section 34 is rotated in the Y2 direction, the signal generating section 9 and the receiving section 11 are simultaneously rotated in the Y2 direction.

Also, even if the core frame 24 rotates in the axial rotation direction, the core frame 24 and
The directional movement operation 37 does not apply any force in the axial rotation direction to the axial movement operation body 37 to the extent that the engagement foot 40 and the bulged portions 27, 28 come into contact with each other.

Although the embodiment has been described using an ultrasonic intrusion detector as an example, it goes without saying that the present invention can be applied to radio wave type or light beam type intrusion detectors.

The only difference is in the elements in the signal generating section, with the radio wave type using a Gunn diode and the light beam type using a light emitting diode.

As described above, according to the present invention, in a detector in which both a signal generating section and a receiving section are housed in the internal space of the housing, the core frame 24 connecting the signal generating section 9 and the transmitting section 11, and the core frame 24 are provided. 24
When the signal generating section 9 and the receiving section 11 are moved in the axial direction, the angle of the signal generating section 9 and the receiving section 11 are simultaneously changed in the plane A, and when the core frame 24 is rotated in the axial rotation direction, the signal generating section 9 and the receiving section are moved in the plane B. Since the means C for simultaneously changing the angle of the section 11 is provided, the signal generating section 9 and the receiving section 11 can be adjusted to the same angle at the same time by moving the axial movement operation section 39 in the axial direction, and by rotating the axial rotation direction rotation operation section. Since the same angle can be adjusted at the same time, the direction of the signal generating part 9 and the receiving part 11 can be made to be almost completely in the same direction with a simple operation.Moreover, since it is possible to adjust both the axial direction and the axial rotation direction, it is possible to install the detector. There are fewer restrictions on location,
It can be installed in places that are difficult to see, and since the detection direction cannot be determined from the outside, it has the effect of making it difficult for intruders to be detected.

[Brief explanation of the drawing]

The drawings show an embodiment of the detection device of the present invention; FIG. 1 is a perspective view with the cover 5 removed, FIG. 2 is a plan view, and FIG. 3 is a portion of the signal generating section 9 and the angle changing means C. Exploded perspective view, Figure 4 is a partial sectional view, Figure 5 is Figure 4 B-B
'[r view, FIG. 6 is a sectional view of the cover 5, FIG. 7 is a partial perspective view showing the second embodiment of the angle changing means C, FIG. 8 is a CC@ side view of FIG. 7, Fig. 9A is an explanatory diagram showing the state of axial angle adjustment, Fig. 10 is an explanatory diagram showing the state of axial rotation direction angle adjustment, and Fig. 11 is an axial direction operation part 37 and the core frame 2.
12 is a partial perspective view showing the engaged state of No. 4, and FIG. 12 is A of FIG. 2.
- is a cross-sectional view, and Fig. 13 shows the axial direction, axial rotation direction, and plane A.
It is a figure which shows the relationship of the surface B. In the figure, 1...Base, 5...Cover, 9...
- Signal generation section, 11... Receiving section, 17... Element, 2
2... Receptacle, 24... Core frame, D, D/-... Holding frame, D', E, E... Holding frame E, E', 30... Shaft rotation direction rotation operation body, 37... indicates an axial movement operating body.

Claims (1)

[Scope of Claims] 1. A signal generating section for light, radio waves, ultrasonic waves, etc., in the internal space of the casing, and a receiving section that receives signals reflected by objects among the signals emitted from the signal generating section. A core frame that mechanically connects the signal generation part and the reception part in an integrated transmitter and receiver type detector, and a plane parallel to the direction of movement of the core frame when the core frame is moved in the axial direction. means for simultaneously changing the angles of the symbol generating section and the receiving section within a plane parallel to the rotating direction when the core frame is rotated in the axial rotation direction; A detection device characterized by comprising: 2. The means for changing the angle includes projections or recesses forming two fulcrums provided in the signal generating section and receiving section, respectively, and a retainer that rotatably engages with the projection or recess forming one of the fulcrums. a holding frame provided with an arm piece having a joint portion and a shaft portion rotatably supported only in the shaft rotation direction;
a holding frame provided with an arm piece having a retaining part that rotatably engages with a protrusion or a recess constituting the fulcrum part, and a connecting part with a core frame; 2. The detection device according to claim 1, further comprising means for slidably engaging the detection device. 3. A patent characterized in that the signal generating section and the receiving section are composed of an element for generating or receiving a signal and a receiver for receiving the element, and that the receiver is provided with a protrusion or a recess that constitutes a fulcrum part. Detection device according to claim 2. 4 The casing includes a partition wall that partitions the signal generator storage area, the reception unit storage area, and at least the storage area for the operating means that moves the core frame in the axial direction or rotates the core frame in the axial direction, a mounting hole, and the printed board storage area. a base that covers the signal generator housing, the receiver housing, and the operating means housing, the end of which is in contact with the bottom surface of the base, and the inner surface of the base is in contact with the outer periphery of the partition wall. The detection device according to claim 1, characterized in that it is constituted by a cover formed therein. 5. The core frame is composed of a non-circular columnar body at least in the cross section of the part that engages with the rotary operating body in the axial rotation direction, and has an enlarged portion that engages with the operating body when moving in the axial direction, and a holding frame provided at both ends. 2. The detection device according to claim 1, further comprising a retaining portion. 6. The detection device according to claim 1, further comprising a braking means for axial movement or rotation of the core frame in the axial direction. 7 The operating body for axial movement of the core frame has an operation part protruding from a slit in the base, and a retaining part that engages with the enlarged part of the core frame only when moving in the axial direction, and the shoulder part is attached to the inner surface of the base. To,
6. The detection device according to claim 5, wherein the distal ends of the retaining portions are configured so as to touch the core frame, and are not engaged when the core frame rotates in the axial rotation direction. 8 The operating body for rotating the core frame in the axial rotation direction consists of a hole having a shape that is almost the same as the non-circular cross section of the core frame, and an operation part that protrudes from the base of the base, and only when the core frame is rotated in the axial rotation direction. 6. The detection device according to claim 5, wherein the detection device is adapted to engage with each other. 9 A cylindrical part that receives the element as a receiver, an upright piece that is provided with a lateral force-directing protrusion that fits into a hole in the upright piece that extends upward from the holding rod, and a protrusion that extends laterally from the holding frame. 4. The detector device according to claim 3, wherein the element receiver comprises a bifurcated protrusion provided below a cylindrical shape to be engaged with each other. 10 A cylindrical part that receives the element as a receiver, an upright piece provided with a lateral protrusion that fits into a recess in an arm extending upward from the holding frame, and a hole provided in the arm of the holding frame. 4. The detection device according to claim 3, wherein the element receiver comprises a lateral protrusion that fits into and is engaged with a slit provided in an arm of the holding frame.