JP2004132133A - Thumb turn device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thumb turn device preventing the illegal operation of the thumb turn from an outdoor side and to provide a thumb turn protecting device used in the same. <P>SOLUTION: This thumb turn device is composed of a thumb turn device body 4 performing the locking and unlocking operation to a rim lock 3 mounted in a door body 2 by rotating an operation knob 1, and a cylindrical operation control part 5 surrounding a side circumference of the operation knob 1. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a thumb turn device A.
[0002]
[Prior art]
2. Description of the Related Art A thumb-turn device that locks and unlocks a door body by operating a deadbolt of a box lock housed and fixed in a door body from inside the room is disclosed in Patent Document 1.
[0003]
In this conventional example, the thumb-turn device includes a thumb-turn (operation knob) rotatable with respect to a thumb-turn pedestal fixed to the indoor surface of the door body. A thumb turn shaft having an end inserted into the deadbolt operation hole of the box lock is fixed to the thumb turn, and the door can be locked and unlocked by rotating the thumb turn.
[0004]
[Patent Document 1]
Japanese Utility Model Registration No. 2553008
[Problems to be solved by the invention]
However, the above-described conventional example has the following disadvantages. That is, the door body is usually provided with a scope for checking the visitor and the like, and a mailbox, and furthermore, since there is a gap between the door body and the frame, tools such as wire, Alternatively, it is impossible to completely prevent the string from invading the interior of the room and performing the rotation operation directly on the thumb turn.
[0006]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described drawbacks, and has as its object to provide a thumb-turn device capable of preventing unauthorized operation of a thumb-turn from the outside, and a thumb-turn protection device usable therewith. I do.
[0007]
[Means for Solving the Problems]
According to the invention, the object is
A thumb-turn device main body 4 for rotating the operation knob 1 to perform an operation of locking and unlocking the box lock 3 arranged in the door body 2;
This is achieved by providing a thumb-turn device A having a knob-shaped operation restricting portion 5 which is formed in a cylindrical shape and surrounds the side periphery of the operation knob 1.
[0008]
In the present invention, the knob operation restricting portion 5 surrounds the side periphery of the operation knob 1 for operating the dead bolt 8 of the box lock 3 and shields the side space of the operation knob 1. As a result, it becomes impossible to improperly operate the operation knob 1 using the side space, for example, to directly apply a rotational operation force to the operation knob 1 by moving a wire or a string in the side space. .
[0009]
On the other hand, the knob operation restricting portion 5 is formed in a cylindrical shape, and its front surface (when indicating a direction in this specification, a direction directly opposite to the operation knob 1 is referred to as “front”) is opened. The operation of the operation knob 1 from the room can be freely performed.
[0010]
The knob operation restricting section 5 may rotate in conjunction with the operation knob 1 of the thumb turn device main body 4 or may rotate relative to the operation knob 1. Even in the case of rotation, the knob operation restricting portion 5 is formed in a cylindrical shape having a circular outer peripheral surface, such as a cylindrical outer peripheral surface or a conical outer peripheral surface, so that pressing force is applied to the outer periphery. Therefore, it is difficult to generate a rotational torque, and it takes time to wind a string or the like, so that an illegal rotation operation to the thumb turn device main body 4 can be effectively prevented.
[0011]
Also, when the knob operation restricting section 5 is allowed to rotate relative to the operation knob 1 (idle) freely, the operation of the operation knob 1 through the operation to the knob operation restricting section 5 is completely prohibited. , More reliable.
[0012]
The height of the knob operation restricting portion 5 is sufficient if the operation knob 1 can be substantially concealed from an operation line at the time of a rotation operation with a wire or a string or the like to the operation knob 1. It is desirable that the height is formed to be longer than the total height of 1.
[0013]
The above-described thumb-turn device A can be configured, for example, by mounting the thumb-turn protection device B on the existing thumb-turn device main body 4. In this case, the thumb-turn protection device B is
The operation knob 1 is mounted on a thumb-turn device main body 4 for rotating and unlocking a box lock 3 arranged in the door body 2 by rotating the operation knob 1,
In the mounted state, the operation knob 1 can be configured such that the side of the operation knob 1 is surrounded by the knob operation restricting portion 5 to restrict the operation of the operation knob 1 from the side.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
As shown in FIGS. 1 to 3, the thumb turn device A includes a thumb turn device main body 4 disposed on the indoor side wall surface of the door body 2 and a thumb turn protection device B. The thumb-turn device main body 4 has a plate-shaped operation knob 1 protruding forward from the thumb-turn cover 4a. When the operation knob 1 is rotated, the dead bolt 8 of the box lock 3 arranged in the door body 2 moves forward and backward. Then, the door 2 is unlocked.
[0015]
On the other hand, the thumb-turn protection device B includes a set plate 6 and a main body 7. The set plate 6 has a thickness slightly smaller than a gap between the rear edge of the operation knob 1 of the thumb turn device main body 4 and the surface of the thumb turn cover 4a, and a diameter slightly longer than the length of the operation knob 1. And a circular fitting hole 6a is formed at the center of the circular plate material so as to fit on the rotation shaft 1a of the operation knob 1. The fitting hole 6a communicates with a rectangular opening 6b through which the operation knob 1 can be inserted. Further, an appropriate number of female screws 6c are formed on the set plate 6.
[0016]
In order to widen the operation space from the indoor side, the main body 7 has a knob operation restricting portion 5 having a conical outer peripheral surface that gradually increases in diameter as going forward, and a C-shaped outer peripheral portion through which the operation restricting portion 5 can be inserted. And a disk-shaped holder 10 in which the mold clip 9 is fitted. A gap is set between the inner circumference of the C-shaped clip 9 and the clip mounting groove 10a of the holder 10 to allow the C-shaped clip 9 to be elastically deformed in the warp direction.
[0017]
A locking groove 5a is formed on the inner periphery of the rear end of the gripping operation restricting portion 5 over the entire circumference, and the holder 10 elastically contracts the C-shaped clip 9 once, By loosely fitting into the locking groove 5a by using the restoring force, it is freely rotatably connected to the cover body 9. At the center of the holder 10, a rectangular opening 10b through which the operation knob 1 of the thumb-turn device main body 4 can be inserted is opened through the front and back sides. Further, the holder 10 is provided with a screw insertion hole 10c that matches the female screw 6c of the set plate 6.
[0018]
Therefore, in this embodiment, as shown in FIG. 1, first, the set plate 6 is inserted from the front surface of the existing thumb turn device main body 4 to the door body 2 so that the operation knob 1 passes through the rectangular opening 6 b. In this state, the movement of the fitting hole 6a of the set plate 6 on the surface of the thumb turn cover 4a in a state of being loosely fitted on the rotating shaft 1a of the operation knob 1 is restricted.
[0019]
Next, as shown by an arrow 1A in FIG. 1, the set plate 6 is rotated by approximately 90 ° to position the rectangular opening 6b as shown by a chain line in FIG. The detachment to the front is restricted in the state of being locked to the edge.
[0020]
Thereafter, the operation knob 1 is inserted into the rectangular opening 10b of the holder 10, and then the main body 7 and the set plate 6 are connected by screwing the screw 11 into the female screw 6c of the set plate 6 through the screw insertion hole 10c. , Fix. The screw 11 has a length that does not make contact with the surface of the thumb turn cover 4a.
[0021]
In the state where the thumb-turn protection device B is mounted on the thumb-turn device main body 4 as described above, the operation knob 1 of the thumb-turn device main body 4 is surrounded from the side over almost the entire height, and the operation knob 1 is moved by wire or the like. Neither can it be pressed directly to give the deadbolt 8 an unlocking operation.
[0022]
Further, even if the knob operation restricting portion 5 is wound around with a string or the like and the rotational force can be transmitted to the knob operation restricting portion 5, since the knob operation restricting portion 5 can freely rotate with respect to the operation knob 1, the operation knob 1 cannot transmit the operating force.
[0023]
Therefore, in this embodiment, it is not possible to directly operate the operation knob 1 of the thumb-turn device main body 4 by utilizing a gap or the like of the door body 2, so that the security performance can be improved.
[0024]
In addition, the thumb-turn protection device B, after inserting the set plate 6 into the thumb-turn device main body 4, rotates and locks the set knob 6 on the rear end edge of the operation knob 1. It can be mounted simply by screwing, and even if it is already fixed to the door 2, the thumb-turn device main body 4 does not need to be removed from the door 2 and can be easily mounted.
[0025]
In FIGS. 1 to 3, the set plate 6 is formed as a single plate having a rectangular opening 6b in the center, but as shown in FIG. 4, the set plate 6 is divided into two divided pieces 6A. , 6A, it is possible to guarantee the retrofitting.
[0026]
In this case, the divided pieces of the set plate 6 are arranged so as to be sandwiched from both sides of the thumb turn device main body 4 as shown by an arrow 4A in FIG. Thereafter, similarly to the above-described embodiment, the main body 7 and the set plate 6 are connected to each other by using the screws 11, and in this state, a ring shape is formed, and the operation knob 1 is locked to the rear end edge.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing the present invention.
FIG. 2 is a sectional view taken along line 2A-2A of FIG. 2;
FIG. 3 is a sectional view taken along line 3A-3A of FIG. 2;
FIG. 4 is an exploded perspective view showing a modification of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Operation knob 2 Door body 3 Box lock 4 Thumb turn device main body 5 Knob operation control part 6 Set plate 7 Main part A Thumb turn device B Thumb turn protection device

Claims (5)

A thumb turn device main body that rotates and unlocks a box lock disposed in the door body by rotating the operation knob,
A thumb turn device having a knob operation restricting portion formed in a cylindrical shape and surrounding a side periphery of the operation knob. A thumb turn device main body that rotates and unlocks a box lock disposed in the door body by rotating the operation knob,
A thumb turn device having a knob operation restricting portion surrounding a periphery of the operation knob so as to be rotatable relative to the operation knob. The operation knob is rotated and attached to the thumb turn device main body that performs the operation of locking and unlocking the box lock arranged in the door body,
In a mounted state, a thumb-turn protection device that surrounds the periphery of a side of the operation knob with a knob operation restricting portion and restricts operation of the operation knob from the side. A set plate that can be retrofitted to the thumb-turn device main body in a fixed state to the door body, is locked to a rear end edge of the operation knob, and is prevented from being detached forward;
4. The thumb-turn protection device according to claim 3, further comprising a main body fixed to the set plate, the thumb-turn protection device including the knob operation restricting portion. The thumb-turn protection device according to claim 4, wherein the knob operation restricting portion is free to rotate with respect to a fixing portion of the main body to the set plate.

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