JP3085722U - Opening / closing body opening prevention device - Google Patents

Abstract

(57) [Problem] To provide an inexpensive door opening prevention device which is easy to mount and inexpensive. SOLUTION: A U-shaped mounting member 11 is mounted on a side inner wall at an upper part of a door 1 with a flat screw, and a rod 12 inserted through upper and lower projecting pieces 11A, 11B of the mounting member 11.
Is moved upward by the operation of the operating rod 13 to be inserted into the receiving hole of the frame 3, and the leaf spring 16 is
To engage the tip of.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 TECHNICAL FIELD The present invention relates to an opening prevention device for holding an opening / closing body such as a double door type door, a switchboard door, and other doors and windows in a closed state.

[0002]

[Prior art]

 For example, a French dropping device is known as this type of opening prevention device. The fence dropper has a lever that is turned on the side wall of the door, a link mechanism and a spring material that convert the rotation of the lever into a vertical movement, a rod that is connected to the link mechanism and that moves up and down, and the like. The door is held closed by moving the rod downward by the rotation of the lever and inserting its tip into the receiving hole provided in the frame.

[0003]

[Problems to be solved by the invention]

 By the way, in order to attach the French drop to the door, a square hole (window) having a length dimension necessary for rotating the lever must be provided on the side wall of the door. However, providing a square hole requires a great deal of labor and time for the machining operation, and requires an expert. In addition, the French drop had the disadvantage that it was expensive not only because its structure was complicated but also because dimensional accuracy was required between each member. SUMMARY OF THE INVENTION An object of the present invention is to provide a device for preventing the opening and closing of an opening / closing member having a simple and inexpensive structure.

[0004]

[Means for Solving the Problems]

 The present invention provides a mounting member attached to the upper and lower portions of the opening / closing body, a rod which is guided by the mounting member so as to be able to move up and down, and whose tip protrudes from the opening / closing body by moving up and down, and An operating member for performing a moving operation, a leaf spring having an abutting portion attached to the mounting member and abutting against the rod peripheral surface, and a frame member provided on the rod peripheral surface and having a rod tip protruding from the rod peripheral surface. And the like, when inserted into a receiving hole such as an engagement recess into which the contact portion of the leaf spring is engaged to maintain this state.

<Operation> When the rod is moved up or down by operating the operating member, the leaf spring comes into contact with an engagement recess provided on the rod peripheral surface with the rod end protruding from the opening / closing body. The part is engaged, whereby the rod is fixedly positioned. The mounting member may be formed from a U-shaped plate having upper and lower projecting pieces and fixed to the inner wall on the side of the opening / closing body with flat screws. Also, using a U-shaped leaf spring, fitting holes are provided at both ends of the leaf spring, these fitting holes are fitted to the projections of the mounting member, and the leaf spring is attached to the mounting member by utilizing its own elastic force. It may be detachably attached.

[0006]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing an attached state of the opening prevention device according to the present invention. In FIG. 1, reference numeral 1 denotes a double-door type child door, 2 denotes a main door, and these doors 1 and 2 are attached to a frame 3 via a hinge so as to be opened and closed. The opening prevention device 10 of the present invention has a mounting member 11 made of a U-shaped plate. The mounting member 11 has upper and lower projecting pieces 11A and 11B, and a rod 12 is inserted through the projecting pieces 11A and 11B along the vertical direction. An operation rod 13 is attached to the rod 12 along the horizontal direction. An engagement recess 14 is formed on the lower peripheral surface of the rod 12. Further, a ring 15 for a stopper is fixed to a peripheral surface near a lower portion of the rod 12.

[0007] At the center plate surface of the mounting member 11, projections 11a, 11a are provided. Fitting holes 16a, 16a (see FIG. 3) provided at both ends of the leaf spring 16 are fitted to these protrusions 11a, 11a. The leaf spring 16 is formed in a rectangular shape, and the tip 16 b is in contact with the peripheral surface of the rod 12. That is, a pressing force is applied to the distal end 16 b of the leaf spring 16 by the peripheral surface of the rod 12.

Next, a mode of attaching the opening prevention device to the child door 1 will be described. Screw holes 1a, 1a are provided on the inner wall above the side 1A of the child door 1. In this case, the interval between the screw holes 1a, 1a corresponds to the interval between two screw holes provided in the mounting member 11 in advance. Next, the mounting member 11 is brought into contact with the inner wall, the flat screws 17, 17 are inserted into the screw holes 1a, 1a, and screwed into both screw holes of the mounting member. As described above, the use of the flat screws 17, 17 can prevent the screws from projecting from the plate surface of the side portion 1A.

Next, the operation of the thus-installed opening prevention device will be described. In FIG. 1, the ring 15 is in contact with the upper surface of the protruding piece 11B below the mounting member 11, so that the rod 12 is prevented from moving down, and the rod 12 is prevented from coming out of the mounting member 11. When the operator grips the operation rod 13 with a finger and moves the rod 12 upward, the distal end portion 12A of the rod 12 projects upward from the upper end of the child door 1. On the other hand, since the receiving hole 3A is provided in the frame 3, the distal end 12A of the rod 12 is inserted into the receiving hole 3A.

On the other hand, when the rod 12 moves upward, as shown in FIG. 3, the engaging recess 14 moves upward, and the tip 16 b of the leaf spring 16 engages with the engaging recess 14. Therefore, the rod 12 is held in a protruding state by receiving the elastic force of the leaf spring 16, so that the closing of the child door 1 is maintained. When the rod 12 is in the protruding state, the operating rod 13 contacts the lower surface of the protruding piece 11A, and functions as a stopper for regulating upward movement.

By the way, if the above-described rectangular leaf spring 16 is used, the leaf spring 16 is opened, and the fitting holes 16a, 16a are fitted to the projections 11a, 11a of the mounting member 11, as shown in FIG. Only by doing so, the fitting holes 16a, 16a of the leaf spring 16 resiliently engage with the projections 11a, 11a, so that the leaf spring 16 can be mounted on the mounting member 11 without using any special fixing means. Further, the leaf spring 16 can be easily removed simply by applying a pressing force in the opening direction. The opening prevention device of the present invention may be mounted below the child door 1 other than above, and in the case of a large door, it is preferable to mount it vertically. In addition, the present invention can be applied to a switchgear such as a door or a window frame of a switchboard.

[0012]

[Effect of the invention]

 As described above, according to the present invention, it is possible to provide an opening prevention device that can be easily attached to a door or the like, has a simple structure, and can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a front view showing an attached state of an opening prevention device according to the present invention.

FIG. 2 is a plan view of the same device in an attached state.

FIG. 3 is an exploded front view showing a main part of the apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Child door 1a Screw hole 2 Main door 3 Frame 3A Receiving hole 11 Mounting member 11A, 11B Projection piece 11a Projection 12 Rod 12A Tip part 13 Operation rod 14 Engagement concave part 15 Ring 16 Leaf spring 16b Tip 17 Flat screw

Claims (4)

[Utility model registration claims] An attachment member attached to at least one of an upper portion and a lower portion of the opening / closing body, a rod guided by the attachment member so as to be vertically movable, and having a tip end protruding from the opening / closing body by upward or downward movement; An operating member for moving the rod up and down, a leaf spring having a contact portion attached to the mounting member and abutting against the peripheral surface of the rod, and provided on the peripheral surface of the rod, An engagement recess into which the abutting portion of the leaf spring is engaged so as to maintain the state of insertion of the distal end portion into the receiving hole. 2. The mounting member according to claim 1, wherein the mounting member is formed in a substantially U-shape, is mounted on an inner wall of a side portion of the opening and closing body via a flat screw, and the rod is inserted into upper and lower projecting pieces. An opening prevention device for an opening / closing body according to claim 1. 3. The opening / closing body opening prevention device according to claim 1, further comprising a stopper that regulates a range of upward and downward movement of the rod. 4. The opening prevention device for an opening / closing body according to claim 1, wherein the leaf spring is formed in a U shape, and fitting holes at both ends are detachably fitted to the projections of the mounting member. .