JPH11336410A - Device for preventing automated door from being forcibly opened - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for preventing an automated door from being forcibly opened which has improved antitheft properties, in which when the automated door is fully opened, the body of the door can be prevented from being moved forcibly upwardly. SOLUTION: An engaging part 81 is provided at the bottom of a door body 1, and a part to be engaged 35, which is engaged with the part 81 when the door body 1 is fully opened, is provided in a guide groove 5 provided on the side of a building frame to prevent the body 1 from being upwardly moved. Under conditions that the door body 1 is fully opened, if an attempt is made to forcibly wrench the body 1 open, the engaging part 81 is brought into engagement with the part 35 to prevent the body 1 from being moved upwardly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a security device for a sliding door type automatic door which opens and closes an opening by horizontal movement, and more particularly, to forcibly removing a locked door body from a guide groove by forcing it. The present invention relates to a device for preventing an automatic door from being opened.

[0002]

2. Description of the Related Art A sliding door type automatic door includes a door body, a door wheel rotatably mounted on an upper portion of the door body, an upper rail for suspending the door body so that the door body can be moved horizontally by the door wheel, and opening and closing of the door body. It has a driving device to be operated, a guide groove for guiding the opening and closing movement of the door body downward, and the like, and is installed at the opening of the building frame. Conventional security devices for automatic doors include a device provided with a locking device below a door body.
This locking device, when the automatic door is fully closed, inserts a key into a key hole on the lower side of the door body and turns the key rod to protrude from the lower surface of the door body, and the key rod is inserted into a receiving member fixed in a guide groove. The door body is prevented from moving in the opening direction by being engaged.

[0003]

By the way, in this type of automatic door, in recent years, a bur or the like is inserted into a gap between a lower portion of a locked door body and a guide rail to forcibly pry up the door body. A crime has occurred in which the lower part of the main body is removed from the guide groove, the door roller above the door main body is removed from the upper rail, and the door main body is moved forward or forward to enter the building.

[0004] The present invention has been made in view of the above-mentioned conventional circumstances.
An object of the present invention is to provide an automatic door prying prevention device excellent in crime prevention property in which a door body cannot be forcibly moved upward.

[0005]

According to a first aspect of the present invention, an engaging portion is provided at a lower portion of a door body and a lower portion of the door body provided at a building frame side. In the guide groove of (1), an engaged portion that engages with the engaging portion when the door body is fully closed to prevent upward movement of the door body is provided. Further, in the invention, it is preferable that the engaging portion is provided on the lower surface of the door body so as to protrude.
The gist is an L-shaped hook, wherein the engaged portion is a reverse L-shaped member or a tubular member which is provided in the guide groove and can be engaged with the hook. The gist of the present invention is that the engaging portion slides on the left and right side walls in the guide groove to function as a steady rest of the door body. According to a fourth aspect of the present invention, a plurality of sets of the engaging portion and the engaged portion are provided, and the engaging portion and the engaged portion are provided at positions not interfering with each other when the door body is opened and closed. Make a summary. Claim 5
The gist of the present invention is that the engaged portion functions as a receiving member for a key stick that protrudes and retracts from the lower surface of the door body by the locking device. According to a sixth aspect of the present invention, the engaging portion is a concave portion or a convex portion provided on the lower surface of the door of the door body, and the engaged portion is the concave portion or the convex portion on a side frame surface facing the door tip. The gist of the present invention is that the protrusion or the recess is provided so as to engage with.

According to the above technical means, the following effects are obtained. (Claim 1) In a fully closed state of the door body, if the door body is forcibly pryed up, the engaging portion in the lower portion of the door body and the engaged portion in the guide groove are engaged, and the upper portion of the door body is engaged. Prevent movement to. (Claim 2) In the fully closed state of the door body, the portion of the substantially L-shaped hook projecting in the lateral direction is engaged with the portion of the inverted L-shaped member projecting in the lateral direction or inside the cylindrical member, and To prevent upward movement. (Claim 3) Since the engaging portion is in sliding contact with the left and right side walls in the guide groove, the swing of the door body in the front-rear direction is prevented. (Claim 4) When the door body is opened and closed, each engaging portion does not interfere with another set of engaged portions that are not engaged when the door body is fully closed, so that opening and closing of the door body is not hindered. Increases the strength of the door body against prying. (5) When the door body is locked, the engaged portion acts as a receiving member for the key rod of the locking device, and prevents the door body from forcibly moving in the opening direction. (Claim 6) When fully closed, the concave or convex portion provided on the lower surface of the door tip engages with the convex or concave portion provided on the side frame surface to prevent the door body from moving upward.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of an automatic door pry opening prevention device according to the present invention. An automatic door A shown in FIG. 1 is a double-door sliding door type automatic door, and has side frames 3 and 3 provided on both sides of an opening of a building frame, and a drive (not shown) attached to the upper ends of the both frames 3 and 3. And a guide groove 5 in which a plurality of anchors 15 for preventing slippage are welded to the lower surface thereof and embedded in the floor surface, and are fixed so as to close the openings on the side frames 3 and 3 side. And two door bodies 1, 1 and the like for opening and closing the opening between the two fixed glasses 4, 4 by the drive unit. 1 is provided with a pry-opening prevention device 10 of the present embodiment at a lower portion thereof.

The door body 1 is formed by fitting a glass plate 11 into a frame 21 in which upper, lower, left and right frames are framed.
In addition, a plurality of anti-vibration members 51 projecting from the lower end surface of the frame body 21 are guided in the guide grooves 5 to open and close. A locking device 60 is provided inside the lower side of the frame 21.

As shown in FIG. 2, a sliding contact member 51a made of a nylon plate or the like is adhered to both sides of the guide groove 5 facing the left and right side walls 5a, 5a. The contact member 51a reduces the sliding resistance with the side wall 5a so that the door main body 1 can be smoothly and horizontally moved without rattling.

The locking device 60 inserts a key (not shown) into a key hole 61 on the lower front side of the frame 21 and turns the key rod 71 from the lower surface of the frame 21 to lock the key rod 7 at the time of locking.
This is a well-known device that prevents the door main body 1 from moving in the opening direction by engaging the first member 1 with a receiving member 25 fixed in the guide groove 5.

The prying-open prevention device 10 comprises an engaging portion 81 fixed so as to protrude from the lower surface of the frame body 21 and an engaged portion 35 fixed in the guide groove 5, and when the door body 1 is fully closed. The engaging portion 81 and the engaged portion 35 are engaged with each other to prevent the door body 1 from moving upward.

The engaging portion 81 is a hook having a substantially L-shape as viewed from the front and formed with a projecting portion 81a projecting in the horizontal direction (described below with reference numeral 81). As shown in (b), the projecting portion 81a is fixed to the lower surface of the frame body 21 by screwing or welding with the protruding portion 81a facing the door tip 1a side.

The engaged portion 35 is an inverted L-shaped member having a shape obtained by turning the hook 81 upside down (described below with reference numeral 35) or a cylindrical member having a hollow cross section (described later). In the following, description will be made with reference numeral 45). Reverse L
As shown in FIG. 5A, the mold member 35 has a protrusion 35a that can be engaged with the protrusion 81a of the hook 81 when the door body 1 is fully closed.
It is fixed in the guide groove 5 toward the side by screwing or welding. As shown in FIG. 5 (b), the tubular member 45 has a hollow portion 45a which can be engaged with the protruding portion 81a when the door body 1 is fully closed, and one opening of the opening end 45a. Is fixed in the guide groove 5 by screwing or welding toward the hook 81 side.

Next, the operation of the prying prevention device 10 of the above embodiment will be described. In the fully closed state of the door body 1, the projection 81a of the hook 81 and the projection 35a of the inverted L-shaped member 35 or the hollow portion 45a of the tubular member 45 are engaged. In this state, if a bur or the like is inserted into the gap between the lower portion of the frame body 21 and the guide groove 5 to try to pry up the frame body 21, the upper surface of the protrusion 81 a and the lower surface of the protrusion 35 a of the inverted L-shaped member 35 or the cylindrical shape The upper wall surface of the hollow portion 45a of the member 45 abuts to prevent the door body 1 from moving upward. Therefore, the door main body 1 is not removed from the guide groove 5, and the door roller 41 is not removed from the upper rail 12.

Next, other embodiments will be described. Pry-open prevention device 10 of the embodiment shown in FIG.
Are the engaging portion (hook 81) and the engaged portion (the inverted L-shaped member 3).
5), the engaging portion and the engaged portion are fixed at positions where they do not interfere with each other when the door body 1 is opened and closed. Further, the above-mentioned steady rest member 51 is replaced with a hook 81, and a key is provided. The receiving member 25 of the rod 71 is replaced with the inverted L-shaped member 35 on the door tip 1a side to prevent the prying-opening function and the door body 1
And a function as a receiving member for the key stick 71.

The prying prevention device 10 of this embodiment
Near the end on the door 1a side of the lower surface of the frame 21 and the opposite door 1a
The two hooks 81, 81 are fixed to the vicinity of the side end so that the respective protrusions 81a face the door tip 1a direction, and the two inverted L-shaped members 35 are closed when the door body 1 is fully closed. The two hooks 81 are fixed in the guide groove 5 so as to engage with the respective hooks 81, and the inverted L-shaped member 3 on the door tip 1a side is fixed.
5 is brought into contact with the side surface of the key rod 71 to prevent the door body 1 from moving in the opening direction. Furthermore, two hooks 81, 8
1 and left and right side walls 5a, 5a in the guide groove 5.
The sliding contact member 51a described above is bonded to both side surfaces opposite to. In this case, the vertical cross-sectional shapes of the hook 81 and the sliding contact member 51a are the same as those of the steady rest member 51 shown in FIG.

Next, the operation of the above-described embodiment having both the function of preventing the prying operation and the function of the door body 1 as a steadying member and the key rod 71 as a receiving member will be described.
When the door body 1 is locked, the door opening prevention device 10
The inverted L-shaped member 35 on the side a contacts the side surface of the key rod 71 to prevent the door body 1 from moving in the opening direction, and the sliding contact members 51a of the two hooks 81 when the door body 1 is opened and closed.
Are slidably in contact with both side walls 5a, 5a of the guide groove 5 to function as a steady rest. Further, the prying-open prevention device 10 includes a hook 81.
And two sets of inverted L-shaped members 35, each set being located near the left and right ends of the door body 1, so that one set of hooks 81 is connected to the other set of inverted L There is no interference with the mold member 35. And the strength with respect to prying-up of the door main body 1 improves compared with the case where only one set of the hook 81 and the inverted L-shaped member 35 is provided.
It should be noted that one of or both of the inverted L-shaped members 35 may be replaced with a tubular member 45, and in this case, the operation is the same as described above.

A prying prevention device 1 illustrated in FIG.
In another embodiment, a plurality of sets of the engaging portion (the hook 81) and the engaged portion (the inverted L-shaped member 35 or the tubular member 45) are provided, and each set is formed by the both side walls of the guide groove 5. In the direction perpendicular to the longitudinal direction of the guide groove 5, each of the hooks 81 is fixed so as to be parallel to each other with a gap therebetween, so that the respective hooks 81 open and close the door body 1. Occasionally, the strength against prying-up of the door body 1 is improved without interfering with another set of the inverted L-shaped member 35 or the cylindrical member 45. In this case, the sliding member 51a is bonded to one side surface of the hook 81 facing the side walls 5a, 5a of the guide groove 5, so that the door main body 1 is formed.
Can also function as a steady rest. Further, as shown in FIG. 3, one of the inverted L-shaped members 35 or the cylindrical member 45 is brought into contact with the side surface of the key rod 71 so that the key rod 71 also has a function as a receiving member. Is also free.

Next, the prying-open prevention device 10 is connected to the door body 1.
An embodiment that is provided below the door tip 1a will be described. As shown in FIGS. 6 and 7, in the single door type automatic door B in which the lower end of the frame 21 is guided into the guide groove 5, the prying-up prevention device 10 is provided.
Is composed of a convex portion 6 or a concave portion 16 provided near the lower end of the door tip 1a surface of the frame body 21 and a concave portion 7 or a convex portion 17 provided near the lower end of the side surface 3a of the side frame 3 facing the door tip 1a. .

In the example shown in FIG. 7A, a convex portion 6 having a rectangular cross section is fixed to the surface of the door 1a by welding or the like, and the concave portion 7 can be disengaged from the convex portion 6 by opening and closing the door body 1. It is formed on the side surface 3a so that In an example shown in FIG. 7B, a convex portion 17 having a circular vertical cross section is fixed to the side surface 3 a by welding or the like, and the concave portion 16 is opened and closed by opening and closing the door body 1.
7 is formed on the door tip 1a surface so as to be freely disengaged from the door 7a.

In the prying prevention device 10 of this embodiment, the convex portion 6 or the concave portion 16 is engaged with the concave portion 7 or the convex portion 17 to prevent the door body 1 from moving upward. The configuration of the other parts of the automatic door B is the same as the basic configuration of the automatic door A described above, and thus the detailed description is omitted.

[0022]

Since the present invention is configured as described above, it has the following effects. (Claim 1) Since the engaging portion and the engaged portion are engaged when fully closed, a bur or the like is inserted into the gap between the locked lower portion of the door body and the guide rail to forcefully lift the door body. In addition, the lower part of the door body is not removed from the guide groove, and the door roller on the upper part of the door body is not removed from the upper rail, so that the security of the automatic door when locking is greatly improved. (Claim 2) Since the engaging portion is an L-shaped hook and the engaged portion is an inverted L-shaped member or a cylindrical member, the engaging portion and the engaged portion can be formed by simple processing. Improve the security of automatic doors at low cost. (Claim 3) It is possible to provide a low-cost automatic door that uses both a steady rest of the door main body and a prevention of upward movement of the door main body with a simple structure. (Claim 4) Since a plurality of engaging portions and engaged portions are provided, the strength against prying up of the door body can be increased, and the security can be further improved. (Claim 5) Since the engaged portion acts as a key rod receiving member, a conventionally used key fixing receiving member is not required, thereby preventing the door body from moving upward. High automatic doors can be provided at low cost. (Claim 6) In a one-way door type automatic door, the upward movement of the door main body is prevented with a simple structure without changing the structure of the lower surface of the door main body, thereby improving security.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of an automatic door prying-open prevention device according to the present invention, partially cut away and enlarged.

FIG. 2 is a longitudinal sectional view showing a structure for preventing shake.

FIG. 3 is a partially cutaway front view showing another example of the automatic door pry opening prevention device according to the present invention.

FIG. 4 is a cross-sectional view showing another example of the automatic door prying prevention device according to the present invention, showing a positional relationship between an engaging portion and an engaged portion.

FIG. 5 is a partially cutaway perspective view showing the automatic door prying-open prevention device according to the present invention, and FIG.
(B) is an example in which the engaged portion is a cylindrical member.

FIG. 6 is a front view showing another example of the automatic door pry opening prevention device according to the present invention.

FIG. 7 is a partially cutaway perspective view showing another example of the automatic door prying-open prevention device according to the present invention, in which (a) is an example in which an engaging portion is a convex portion and an engaged portion is a concave portion; b) is an example in which the engaging portion is a concave portion and the engaged portion is a convex portion.

[Explanation of symbols]

 A, B: Automatic door 1: Door body 1a: Door tip 3: Side frame 5: Guide groove 6, 17: Convex part 7, 16: Concave part 10: Pry-open prevention device 25: Receiving member 35: Reverse L-shaped member Engaging part) 45: tubular member (engaged part) 71: key stick 81: hook (engaging part)

Claims (6)

[Claims] An engaging portion is provided at a lower portion of a door main body, and a guide groove below a door main body provided on a building frame side is provided.
An automatic door pry-opening prevention device including an engaged portion that engages with the engaging portion in a fully closed state of the door body to prevent the door body from moving upward. 2. The inverted L-shaped hook, wherein the engaging portion is a substantially L-shaped hook protrudingly provided on the lower surface of the door body, and the engaged portion is provided in a guide groove and can be engaged with the hook. The device for preventing the automatic door from being pryed open according to claim 1, which is a member or a cylindrical member. 3. The automatic door pry-open prevention device according to claim 1, wherein the engagement portion slides on left and right side walls in the guide groove to function as a swing rest of the door body. 4. A plurality of sets of the engaging portion and the engaged portion are provided,
4. The automatic door prying prevention device according to claim 1, wherein the engaging portion and the engaged portion are provided at positions that do not interfere with each other when the door body is opened and closed. 5. The automatic door pry-open prevention device according to claim 1, wherein the engaged portion functions as a receiving member for a key stick that protrudes and retracts from a lower surface of the door body by a locking device. 6. The engaging portion is a concave portion or a convex portion provided on a lower surface of a door of the door body, and the engaged portion is engaged with the concave portion or the convex portion on a side frame surface facing the door tip. 2. The automatic door pry-open prevention device according to claim 1, wherein the automatic door is a projection or a recess provided so as to fit.