JPS6028124A - Pyroelectric switch for automatic door - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to an electricless switch for automatic doors.

The pyroelectric switch for automatic doors of the present invention uses a pyro sensor to detect the heat rays of a heating element (such as a crowd of people) that enters the opening area of an automatic door through a Fresnel lens, and converts it into a pyroelectric sensor to switch the door automatically. This is a switch used for opening and closing.

Due to its structure, the Fresnel lens 7 used in the switch of the present invention is divided into a plurality of parts at the center of the lens (in this embodiment, an example of 6 parts is shown), and zo'11 Center the lens a, b, c,
It is an assembly of lenses having a number of d, e, and f, and the field of view and boundary of the sensing area are made clear, so that uniform sensing accuracy within the sensing area can be obtained.

The Fresnel lens described above is used in the pyroelectric switch for automatic doors of the present invention, and the switch of the present invention was developed to fully utilize the detection accuracy of the switch using this lens. The switch of the present invention is intended to be a switch having a mechanism for freely varying and adjusting the detection range, variable range, and surrounding area.

To achieve the above object, the switch of the present invention adjusts the distance between the lens and the sensor or changes the focal length by moving the sensor body up and down in a horn provided on the lens by rotating a lever; In order to adjust the detection range and variable range according to the focusing direction of the lens, the sensor case is made into a spherical shape as a whole, and the support frame of the sensor case is supported so that the spherical force can be rotated back and forth within the support frame. Therefore, the orientation of the lens is 36° with respect to the sensing surface.
001/) It is now possible to adjust the angle by 14 in the direction of deviation.

Hereinafter, FIG. 1 will be described in detail according to the embodiments shown in the drawings. FIG. 1 shows a switch A for an automatic door according to the present invention. Switch A includes a sensor housing 1, a detection area variable lever 2, a rotating board 3, a sensor body 4, a case body 5, and a horn 6.
and a Fresnel lens 7. The sensor case is composed of several sensor cases 1 and a case body 5, and is constructed so that when the case body 1 is pushed down onto the case body 5, the entire case becomes spherical. Case fish body 1 is shown in figure m1
As shown in the figure, it has the shape of a bowl turned upside down. The lever 2 has two lever plates 9a and 9b fixed in parallel in a direction perpendicular to one par 8. As shown in the drawing, the lever plate has guides lj loa and lob cut in the shape of a waxing chord. is provided, and has a handle 11 at the other end of the bar. The circuit board 3 is provided with a rectangular opening 12 in its center, and a cylindrical sensor main body 4 is supported freely in the air above the opening by a wiring bundle 13 rising and extending from the circuit board. The sensor body has support arms 14a and 14b that protrude to the left and right of the sensor body.

19 is a pyroelectric element.

A concentric lens window 15 for fitting a lens is opened at the lower end of the case body 5, and a Fresnel lens 7 or several lenses are inserted into the window, and the lens is covered from the back side of the lens to form an image. A pawn 6 is attached and fixed, and a support arm 14a of the sensor body is attached to the upper cylindrical portion 16 of the horn.

Two arm guides W417a are cut in the vertical direction to guide the sensor body 4 and the circuit board 3 vertically. It has a wiring guide i%'ilB.

(Return) The substrate 3 has the cylinder Tj1 of the horn 6 in the opening 12.
It is fixed like an inner lid inside the case body 5 at a position where the upper part of s16 protrudes, and the sensor body is attached to the support arms 14a, 14.
b is inserted into the arm guide grooves 1'7a and 17b to be guided into the cylindrical portion 16, and at this time, the wiring bundle 13 is inserted into the U detection area inserted into the wiring kite 8. As shown in FIG. 2, the variable lever 2 is provided across the circuit board, and the lever plates 9a and 9b are positioned to sandwich both sides of the cylindrical portion, with the arm guide direction 1'? The support arms 14a and 14b protruding outside of the guide grooves 10a and 17b are the guide grooves 10a.

10b. The lever plates 9a and 9b rotate within the opening 12 of the circuit board.U18a and 18b are bearings, and both ends of the lever 2 are rotatably supported by the bearings. The case body 1 is mounted on the case body 5 constructed as described above, and the cent case is formed into a spherical shape as a whole. This 6j handle 11 is placed outside the sensor case, and the handle is operated from outside the case.+Since the automatic door pyroelectric switch of the invention is made by the above-mentioned SEIZO, the handle 11 can be moved left and right. When rotated, the support arms 14a and 14b move up and down in the arm kite groove in conjunction with the piston, and as shown in FIG. Rotate backwards and it will descend. Therefore, the distance between the sensor body and the lens can be adjusted by operating the handle, and the detection accuracy9 may vary due to the distance between the Sochida 1 and the switch or the mounting position or angle of the switch.
With this, mW can be obtained by simply operating the handle without changing the mounting position or angle of the switch itself as in the past, and more accurate detection effects can be obtained. Adjustment is now possible.

Next, the switch of the present invention is designed so that the entire sensor case is rotated within the frame. Frame B
It is fitted into the ceiling and used as a frame for attaching a switch. The frame B extends downward to the eleventh point and consists of a frame main body 20 and a decorative cover 21. The frame main body 20 has a straight shape in the overall direction, is open at the bottom, and has a concentric support hole 23 formed by an inwardly protruding edge, and the inner part of the support hole is A 77 roller 24 is provided on the periphery to improve slippage, and a plurality of elastic support plates 25 are provided inside the frame along the inner wall, and a concentric window is formed in the center of the surface of the support plate. Shoulder 28. Therefore, the sensor case is rotatably supported by the muffler 24 or the curved surface of the bowl-shaped upper part of the lid within the frame.
The curved surface of the sensor case is elastically supported by the buffer member 26, and furthermore, the lower part of the sensor case is rotated 1 in contact with the inner peripheral edge of the window of the decorative cover so that the lens part protrudes from the window. It is supported by the staff. Therefore, the sensor case, which is generally spherical, can be rotated within the frame in the direction of the sensing area of the lens, front side, back, left, and right. Niichi 11
This has the effect of making it possible to adjust the settings.

Rotation of the sensor case is done manually. Since the switch of the present invention is constructed as described above, the adjustment of the lens and the sensor element (111 KK or C = focus adjustment and lens direction adjustment force (1) is performed at the same time, and any conditions (4) when installing the switch) :T", it became possible to obtain even more crystalline detection accuracy.

The Fresnel lens of the pyroelectric switch for automatic doors of the present invention is an assembly of lenses having a plurality of lenses having the above-mentioned curves, and the detection range and variable area can be adjusted using any lens σi.
By using a mask that blocks the Jφ heat rays, it is possible to make the switch even more sensitive (with higher variable accuracy). At the same time, a detection area direction seal 29 was used as a mask to block the rays. The seal is made of aluminum foil, the surface is treated with non-reflective grease, and the back side is coated with adhesive.
1 As shown in FIG. 9, a plurality of lens sheets/k 34.31b are cut in advance into shapes that match the divided state of the lens.

3Lc, . It became possible to change. Therefore, by masking blood that does not need to be detected on the detection surface, it has become possible to freely change and process the shape of the detection area three-dimensionally and two-dimensionally depending on the purpose.

[Brief explanation of drawings]

Fig. 1 is an exploded explanatory view of the switch of the present invention, Fig. 2 is a perspective view showing the lid of the switch in an open state, Fig. 3 is a bottom view of the switch, Fig. 4 is a cross-sectional explanatory view of the switch, Figure 5 is a perspective view showing the state in which the switch is mounted on the frame;
The figure is a sectional view taken along the line C-a in Fig. 5, Fig. 7 is a plan view of the decorative cover, Fig. 8 is a front view of the D-D body in Fig. 7, and Fig. 9 is a plan view of the variable detection area sheet. A: Automatic door switch B: Frame body 1; Lid body 2; Lever 3: Circuit board 4: Sensor body 5; Case 6:
Ho'wa, Iusu 20: Frame body 21: Ihi makeup kat = Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 8 Fig. 6 Fig. 7 Fig. 8 Fig. 9 Fig. 9 10

Claims (1)

[Claims] 1. The sensor case has an overall spherical shape, and the case is divided into an upper and lower lid body and a main body. The case lid body has the shape of an upside-down bowl, and the case body has a lens shape. It has a window, a Fresnel lens, a horn, a circuit board, a sensor body, and a detection area variable lever, and its outer shape is hemispherical.A concentric lens window is provided at the lower end of the case body, and the center of the lens is located in the window. A 7-lens lens divided into several lenses is attached, and a leak-shaped horn is attached and fixed from the back side of the lens to cover the lens.The cylindrical part at the top of the horn has two vertical The circuit board has a rectangular opening in the center, and a wiring guide groove that guides the wiring bundle connecting the sensor body and the circuit board vertically. The sensor has a cylindrical shape, and one main body is freely supported in the air by a wiring bundle extending from the top of the circuit board.The sensor main body has support arms that protrude to the left and right, and the circuit board is fixed in a pot shape inside the case body. The cylindrical portion of the horn protrudes through the opening of the circuit board, the two support arms are freely inserted into the arm guide groove of the cylindrical portion, and the wiring bundle is freely movable in the wiring guide groove. Therefore, the sensor main body is supported in the cylindrical portion so that the piston can move up and down, and the sensor body is inserted into the cylindrical portion so as to be able to move up and down with the piston. The J range variable lever has two lever plates arranged perpendicularly to one bar, each lever plate having a guide groove cut in the shape of a waxing chord,
The support arm of the sensor body is inserted into the guide groove and freely supported by the guide groove marked n1. When the lever is rotated left and right, the support arm is guided by the guide groove, and the sensor body moves inside the cylindrical portion. and the wiring bundle moves up and down, both ends of the bar of the lever are rotatably extended to bearings in the case body, and both the lever plates are configured to move back and forth within the opening of the circuit board. The case cover body is fitted onto the case body, the handle of the lever is positioned outside the case, and by rotating the handle from outside the case, the sensor body can be moved up and down, and the lever can be adjusted freely. A pyroelectric switch for automatic doors 2, characterized in that the sensor case is supported within a sensor support frame so as to be rotatable back and forth and left and right in the direction of the detection area of the lens, and the support frame has a cylindrical shape, with a lower end is open, and the upper end has a concentric support hole formed by an inwardly projecting edge, and the curved surface of the upper part of the sensor case is rotatably supported in contact with the sloped edge of the support hole. On the other hand, the body of the sensor case is rotatably supported by a plurality of elastic support girders provided along the inner wall of the frame.
Furthermore, it was provided on a decorative cover that was attached to cover the periphery of the lower end flange of the lower & l support frame of the sensor case near the lens window. The concentric decoration cup is rotatably supported in contact with the inner periphery of the window. Therefore, the sensor case, which has a spherical shape as a whole, can be rotated back and forth and left and right in the direction of the sensing area of the lens within the frame. The first aspect of patent claim 1 is characterized in that the detection area and variable range of the sensor on the detection surface of the sensor can be adjusted by 360 degrees, and can also be adjusted to the area of deviation.
In the automatic door pyroelectric switch 3 described in Section 3, any lens surface of the Fresnel lens, which is made up of a collection of lenses divided at the center, is masked with a detection area variable seal, and the detection area direction seal blocks heat rays. It is made of a flexible aluminum foil film, the surface is treated with a no-reflection, 1-kiduki effect, and the back side is treated with adhesive.Its pre-cut into a shape that matches the division state of the seals, making it a single sticker. Claim 1, characterized in that the detection area is formed by a combination of detection area variable seals that make it possible to change the pattern of the detection area by masking an arbitrary lens. Pyroelectric switch for automatic doors