JP2011127371A - Cover for emergency unlocking thumb-turn - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cover for an emergency unlocking thumb-turn which is strong, surely disables use of the unlocking thumb-turn at a usual time, and surely and nondestructively enables thumb-turn operation at an emergency time. <P>SOLUTION: A first cylinder 13 which is cylindrical and provided with a first mounting portion 23 and a second mounting portion 24 on both sides is detachably mounted to a seat 12. A C-type spring part of a pushing portion 14 which has a groove 28 having a tapered portion at least on the side opposite to the pushing direction is formed in the circumferential side surface of a pushing plate 26 smaller than an internal diameter of the first cylinder 13 and provided with an opening 27 corresponding to the thumb-turn and to which a C-type spring 29 having spring characteristics in a spreading direction is located to abut against the edge of the second mounting portion 24. A cylindrical second cylinder 15 is detachably mounted to the second mounting portion 24 of the first cylinder 13. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an emergency unlocking thumb-turn cover that disables the unlocking thumb-turn during normal operation and allows it to be operated in an emergency.

  In recent years, a cover is attached to a thumb turn attached to a door lock. The cover is a so-called crime prevention to prevent picking by unauthorized intruders in the normal use state with respect to the thumb turn, and the cover cannot be used at normal times, and in the event of an emergency against the door closing in the event of a power failure due to an earthquake or fire Some unlocking operations are possible. It is desirable that the cover that allows the thumb turn to be unlocked in an emergency is surely disabled during normal use and can be operated reliably and non-destructively in an emergency.

  Conventionally, as a cover that allows the thumb turn to be unlocked in an emergency, there are those proposed in Patent Documents 1 to 3 below (FIGS. 9 and 10 in Patent Document 3). These covers are obtained by putting a cover body such as a transparent plastic on a thumb turn or thumb-turned knob, and the cover body is cut. That is, the thumb turn is normally covered with a cover and cannot be used. In an emergency, the thumb turn can be operated by dividing the cover body at the cut portion and removing it.

JP 2009-077942 A JP 2007-332611 A Japanese Patent Application Laid-Open No. 11-205000

  The cover of the above-mentioned patent documents 1 to 3 breaks the cover main body in an emergency, and when used for a door that is normally used, the cover main body is accidentally broken when carrying in or out of luggage. There is a problem that the structure on the assumption that it is cracked in an emergency can easily be broken by mistake. Further, the cracked cover body cannot be reused, and there is a problem that a new cover body must be attached and the cost is increased.

  Accordingly, the present invention has been made in view of the above problems, and provides an emergency unlocking thumb turn cover that is robust, reliably disabled during normal use, and capable of thumb turn operation reliably and non-destructively in an emergency. Objective.

  In order to solve the above-mentioned problems, the invention of claim 1 is an emergency unlocking thumb-turn cover in which the unlocking thumb turn added to the door locking is disabled during normal operation and can be operated in an emergency. The first mounting portion and the second mounting portion are provided on both sides in a cylindrical shape, and the first cylindrical portion is detachably attached to the door side by the first mounting portion, and is smaller than the inner diameter of the first cylindrical portion. The push plate is provided with an opening corresponding to the thumb turn, and a C-type spring having a spring characteristic in the spreading direction is formed on the peripheral side surface of the push plate with a groove having a tapered portion at least on the opposite side to the push direction. The C-type spring portion is positioned in contact with the distal end portion of the second mounting portion of the first cylindrical portion, and the pressing portion is included in the second mounting portion of the first cylindrical portion. And detachably attached A second cylindrical portion of the tubular that is configured to have a.

According to the inventions of claims 2 and 3, “the length of the first cylindrical portion is the tip portion of the thumb turn in the thumb turn corresponding opening portion of the pushing plate in the pushing portion located at the tip portion of the second mounting portion. Is configured to be positioned,
“The tapered portion is formed on both sides of the C-shaped spring attached to the groove formed on the circumferential side surface of the pushing plate in the pushing portion”.

  According to invention of Claim 1, the 1st cylinder part which was provided with the 1st attachment part and the 2nd attachment part in the both sides at the cylindrical shape is attached to the door side so that attachment or detachment is possible, and it attaches to the front-end | tip part of the said 2nd attachment part. A C-shaped groove having a spring characteristic in the spreading direction, in which a groove having a tapered portion is formed at least on the opposite side to the pushing direction on the peripheral side surface of the pushing plate which is smaller than the inner diameter of the first cylindrical portion and provided with the opening corresponding to the thumb turn. The C-shaped spring portion of the push-in portion to which the spring is attached is brought into contact with and positioned so that the cylindrical second cylinder portion is detachably attached to the second attachment portion of the first cylinder portion. It is robust because it does not form a configuration that causes damage to the 1st and 2nd cylinders. Also, it cannot be used normally during normal operation, and the operation of the thumb turn is ensured by pushing the pushing plate into the 1st cylinder in the event of an emergency. Can be made possible Sometimes, without destroying either, the first and second cylinders can be removed and a C-shaped spring can be attached to the push-in plate to cover the original thumb-turn, allowing reuse and cost. Can be prevented.

  According to invention of Claim 2, the length of the 1st cylinder part is set so that the front-end | tip part of a thumb turn may be located in the thumb turn corresponding | compatible opening part of the pushing board in the said pushing part located in the front-end | tip part of a 2nd attachment part. By doing so, the thumb-turn corresponding opening can serve as a guide in the thumb turn when the push-in plate is pushed in, and the thumb turn operation can be ensured while ensuring the push-in reliability.

  According to the invention of claim 3, the second cylindrical portion of the push-in portion with respect to the push-in direction is formed by forming the taper portions on both sides of the C-type spring to be attached to the groove formed on the peripheral side surface of the push-in plate in the push-in portion. Therefore, it is not necessary to determine the position with respect to the tip portion of the lens, and the assembly can be easily and reliably pushed.

It is a block diagram of the cover for emergency unlocking thumbturns in this invention. It is explanatory drawing (1) of the attachment state to the thumb turn in the emergency unlocking thumb turn cover of FIG. It is explanatory drawing (2) of the attachment state to the thumb turn in the emergency unlocking thumb turn cover of FIG. It is explanatory drawing which makes the emergency thumb turn operation of the cover for emergency unlocking thumb turns of FIG. 1 possible.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a configuration diagram of an emergency unlocking thumb turn cover according to the present invention. The emergency unlocking thumb turn cover of the present invention makes the unlocking thumb turn added to the door lock unavailable during normal operation and operable during emergency. In FIG. The hourly unlocking thumb turn cover 11 includes a thumb turn pedestal 12, a first tube portion 13, a push-in portion 14, and a second tube portion 15. The thumb turn pedestal 12 is formed of, for example, resin or the like, and is attached to a mechanism base of the thumb turn described later through the provided opening 21, and a screwing groove 22 is formed on the inner peripheral side surface.

  The first cylindrical portion 13 is formed in a cylindrical shape with a metal member such as a cured resin such as an acrylic plate or an aluminum die cast, for example, and a first screwing portion 23 and a second mounting portion which are first mounting portions on both ends. A certain second screw part 24 is provided. The first screwing portion 23 is formed with a screwing groove that is screwed into the screwing groove 22 of the thumb turn base 12. In addition, a screwing groove may be directly formed on the door side without using a pedestal on the door side, or it may be directly fixed to the door with an adhesive or the like without forming a screwing groove on the first mounting portion. Good. Moreover, the 2nd screwing part 24 is formed with the screwing groove | channel which screws together with the 2nd cylinder part 15 mentioned later. The length of the first cylindrical portion 13 is set so that the tip end portion of the thumb turn is positioned in the thumb turn corresponding opening portion of the pushing plate of the pushing portion 14 (described later) located at the tip portion of the second screwing portion 24 when assembling. This is set to be performed (described in FIG. 3).

  As shown in FIG. 1B, the push-in portion 14 is provided with a thumb-turn opening 27 penetrating through a push plate 26 having a disk shape and smaller than the inner diameter of the first tube portion 13. For example, it can be formed of a curable resin such as an acrylic plate or a metal member such as aluminum die cast, but a transparent or translucent acrylic resin plate is preferred in order to make it easy to distinguish thumb turn.

  Further, as shown in FIG. 1C, a groove 28 is formed on the peripheral side surface of the push plate 26, and one direction of the groove 28 (the push direction when it is later positioned on the first tube portion 13). A tapered portion 30A is formed on the opposite side. A metallic C-type spring 29 having a spring characteristic is attached to the groove 28 in the direction of expansion with respect to the diameter (the direction in which the gap in FIG. 1B expands or contracts as an initial shape). The C-type spring 29 attached to the pushing plate 26 is larger than the inner diameter of the first cylinder portion 13 and smaller than the inner diameter of the second screwing portion of the second cylinder portion 15.

  The pushing portion 14 having the C-shaped spring 29 attached to the pushing plate 26 has one side of the C-shaped spring portion (the side opposite to the tapered portion 30A of the groove 28) on the second screw of the first cylindrical portion 13. It is positioned in contact with the distal end portion of the joint portion 24. That is, the tapered portion 30A is formed on the opposite side to the pushing direction of the pushing plate 26, so that the pushing plate 26 can be pushed (described later).

  Incidentally, the groove 28 formed on the peripheral side surface of the push-in plate 26 may be formed with tapered portions 30A and 30B on both sides of the C-type spring 29 to be attached, as shown in FIG. Accordingly, when the pushing portion 14 is positioned at the distal end portion of the second screwing portion 24 of the first cylindrical portion 13 after the pushing plate 26 is pushed in an emergency, the surface direction of the pushing portion 14 (the tapered portion described above). It is not necessary to confirm the position), and the assemblability can be facilitated.

  The second cylindrical portion 15 is formed in a cylindrical shape with a metal member such as a cured resin such as an acrylic plate or an aluminum die cast, and a step 25A is formed by thinning one side of the inner wall. A threading groove 25 that is threadedly engaged with the second threaded portion 24 of the first tube portion 13 is formed. Then, the second cylinder part 15 includes a pushing part 14 in a second screwing part 24 of the first cylinder part 13 and is detachably attached. At that time, a second screw of the first cylinder part 13 is attached. The C-shaped spring 29 of the push-in portion 14 is positioned between the front end portion of the joining portion 24 and the step portion 25A formed at the rear end of the screwing groove 25 of the thin portion of the second cylindrical portion 15. In this way, the second cylindrical portion 15 is prevented from coming off (see FIG. 4B).

  Here, FIG. 2 and FIG. 3 are explanatory views of the state of attachment to the thumb turn in the emergency unlocking thumb turn cover of FIG. First, as shown in FIG. 2A, the thumb turn base 12 is attached to the thumb turn 32 added to the locking of the door 31 so as to be held by the mechanism base 33 of the thumb turn at the opening 21. Therefore, as shown in FIG. 2B, the first threaded portion 23 of the first cylindrical portion 13 is screwed into the threaded groove 22 of the thumb turn base 12.

  In a state where the first tube portion 13 is screwed to the thumb turn base 12, the push-in portion 14 is the second screw portion 24 of the first tube portion 13 as shown in FIGS. 2 (B) and 3 (A). It is located in contact with the tip of the. At this time, the leading end portion of the thumb turn 32 is positioned in the thumb turn corresponding opening portion 27 of the pushing plate 26 of the pushing portion 14 by setting the length of the first cylindrical portion 13. As a result, when the pushing plate 26 is pushed in, the thumb turn 32 and the thumb turn corresponding opening 27 can be combined to serve as a guide.

  Then, as shown in FIG. 3B, the screwing groove 25 of the second cylinder part 15 is screwed into the second screwing part 24 of the first cylinder part 13. The push-in portion 14 is included. FIG. 3C shows a case where this state is shown from the front.

  FIG. 4 shows an explanatory diagram for enabling the emergency thumb turn operation of the emergency unlocking thumb turn cover of FIG. FIG. 4A shows a normal state. At this time, the thumb turn 32 cannot be used. When the thumb turn 32 can be operated in an emergency, as shown in FIGS. 4B to 4D, a finger is put into the second cylinder portion 15 and the pushing plate 26 is pushed into the first cylinder portion 13. .

  When the pushing plate 26 is pushed into the first cylindrical portion 13, the C-type spring 29 is spread along the tapered portion 30 </ b> A, and finally, the pushing plate 26 is detached from the C-type spring 29. At this time, the pushing plate 26 is guided by the thumb turn 32 at the thumb turn corresponding opening 27, and when the pushing plate 26 is detached from the C-shaped spring 29, the thumb turn 32 is in an operable state to be pinched with a finger. is there.

  When the emergency unlocking thumb turn cover 11 is used, the C-shaped spring 29 is taken out by removing the second cylindrical portion 15 from the first cylindrical portion 13. Further, the pushing plate 26 is taken out by removing the first tube portion 13 from the thumb turn base 12. Then, by attaching a C-shaped spring 29 to the groove 22 on the peripheral side surface of the push-in plate 26, and attaching the first cylinder part 13, the push-in part 14 and the second cylinder part 15 as shown in FIGS. The emergency unlocking thumb turn cover 11 can be used.

  Even if the groove 22 on the peripheral side surface of the push-in plate 26 is formed with the tapered portions 30A and 30B on both sides of the C-shaped spring 29 as shown in FIG. The operation of (D) is the same.

  As described above, since the first tube portion 13 and the second tube portion 15 are not formed to be damaged, they are robust and can be prevented from being damaged even if accidentally collided with each other. Sometimes the pushing plate 26 is pushed into the first tube portion side, so that the thumb turn 32 can be reliably operated. At that time, neither of them is destroyed, and the first tube portion 13 and the second tube portion 15 are moved. Since the C-shaped spring 29 can be attached to the push-in plate 26 to cover the original thumb turn 32, it can be reused and cost can be prevented.

  In addition, although the case where the attachment of the 1st cylinder part 13 to the thumb turn base 12 and the attachment of the 2nd cylinder part 15 to the 1st cylinder part 13 was screwed together was shown, it is a well-known detachable fitting type As well as more.

  The emergency unlocking thumb turn cover of the present invention can be used in industries that manufacture and use door locks that are unlocked in an emergency.

11 Emergency Unlocking Thumb Turn Cover 12 Thumb Turn Base 13 First Tube Part 14 Pushing Part 15 Second Pipe Part 23 First Screwing Part 24 Second Screwing Part 26 Pushing Plate 27 Thumb Turn Opening 28 Groove 29 C Type Spring 30A, 30B Taper part 32 Thumb turn

Claims (3)

An unlocking thumb turn cover that makes the thumb turn for unlocking added to the door lock unavailable during normal operation and operable in an emergency,
A first cylindrical portion having a cylindrical shape and first and second mounting portions provided on both sides, the first mounting portion being detachably mounted on the door side;
The push plate smaller than the inner diameter of the first tube portion is provided with an opening corresponding to a thumb turn, and a groove having a tapered portion at least on the opposite side to the push direction is formed on the peripheral side surface of the push plate so as to extend. A C-type spring having spring characteristics is attached, and the C-type spring part is abutting against the tip of the second attachment part of the first cylindrical part,
A cylindrical second cylindrical part that is detachably attached to the second mounting part of the first cylindrical part, including the push-in part;
An emergency unlocking thumb-turn cover characterized by comprising:   The emergency unlocking thumb-turn cover according to claim 1, wherein the length of the first tube portion is within the thumb turn corresponding opening of the push-in plate at the push-in portion located at the tip of the second attachment portion. A cover for an emergency unlocking thumb turn which is set so as to position a tip portion of the thumb turn.   3. The emergency unlocking thumb-turn cover according to claim 1 or 2, wherein tapered portions are formed on both sides of the C-shaped spring to be attached to the groove formed on the circumferential side surface of the pushing plate in the pushing portion. Cover for emergency unlocking thumb turn.

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