Crescent lock and auxiliary tool for crescent lock

Abstract

To provide a crescent lock and an auxiliary tool for the crescent lock capable of suppressing the manufacturing cost and saving the labor for crime prevention.SOLUTION: This crescent lock 1 is composed of a crescent body part installed in an inside sash frame and a fastener fixed to an outside sash frame. The crescent body part includes a base part 2, an operation bar 3c for operating a lock part 3b, and a shielding part 5. The operation bar 3b is rotatably attached to the base portion 2. The shielding part 5 is positioned between the 3b of the operation bar in a closed state and the outside window, and is provided on the base part 2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a crescent lock and an auxiliary device for the crescent lock that prevents it from being opened with an awl or a screwdriver, which is one of the methods used by burglars. [Background technology]

[0002] BACKGROUND ART Conventionally, there are various crescent locks and auxiliary devices for crescent locks that prevent them from being opened with an awl or a screwdriver, which is one of the burglary methods. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-169772 [Patent Document 2] Japanese Patent Application Laid-Open No. 2004-316406 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the invention disclosed in Patent Document 1 uses a compression spring or hinge to lock the operating bar of the crescent lock, which results in problems such as high manufacturing costs and the need to use a special external operating member to unlock it, which increases the work required for security purposes. Furthermore, the invention shown in Patent Document 2 has a configuration in which the operating bar of the crescent lock is fixed with a key so that it does not move, which results in problems such as high manufacturing costs and increased effort required for security.

[0005] The present invention has been made in view of the above, and aims to provide a crescent lock and an auxiliary tool for the crescent lock that can be manufactured at low cost and does not require much effort for security. [Means for solving the problem]

[0006] The above objectives are: A crescent lock consisting of a crescent body attached to the inner sash frame and a fastener fixed to the outer sash frame, The crescent body includes a base 2, an operating bar 3b for operating a lock 3c, and a shield 5. The operation bar 3b is rotatably attached to the base portion 2, The shielding portion 5 is located at a position that shields the operation bar 3b from the outer window in the closed state, and the crescent locks 1, 10 provided on the base portion 2 This is achieved by:

[0007] In addition, the above objectives are: The shielding portion 5 is configured to cover the rear surface (the surface facing the outside of the window) of the operation bar 3b in the closed state. This is achieved by:

[0008] In addition, the above objectives are: The shielding portion 5 is configured to cover the side portion of the operation bar 3b in the closed state. This is achieved by: [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a crescent lock and an auxiliary tool for a crescent lock that can be manufactured at low cost and does not require much effort for security purposes. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a diagram illustrating a crescent lock 1 according to a first embodiment of the present invention. [Figure 2] 1 is a diagram illustrating a crescent lock 1 according to a first embodiment of the present invention. FIG. [Figure 3] 1 is a diagram illustrating a crescent lock 1 according to a first embodiment of the present invention. [Figure 4] 1 is a diagram illustrating a crescent lock 1 according to a first embodiment of the present invention. FIG. [Figure 5]FIG. 10 is a diagram illustrating a state in which the lock has been opened using an awl or a screwdriver, which is one of the methods used by burglars in the past. [Figure 6] FIG. 1 is a diagram illustrating a state in which the crescent lock 1 according to the first embodiment of the present invention has been prevented from being opened with an awl or a screwdriver, which is one of the methods used by burglars. [Figure 7] 1 is a diagram illustrating a crescent lock 10 according to a second embodiment of the present invention. FIG. [Figure 8] 1 is a diagram illustrating a crescent lock 10 according to a second embodiment of the present invention. FIG. [Figure 9] 1 is a diagram illustrating a crescent lock 10 according to a second embodiment of the present invention. FIG. [Figure 10] 1 is a diagram illustrating a crescent lock 10 according to a second embodiment of the present invention. FIG. [Figure 11] FIG. 2 is a diagram illustrating a crescent lock 1 according to a modified example of the first embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] A crescent lock 1 according to a first embodiment of the present invention will be described below with reference to Figures 1 to 6. In all of the following drawings, the dimensions and proportions of each component may be shown as appropriate differently to facilitate understanding.

[0012] Fig. 1 is a front view of the crescent lock 1 of this embodiment in a closed state, Fig. 2 is a right side view of the crescent lock 1 of this embodiment in a closed state, Fig. 3 is a left side view of the crescent lock 1 of this embodiment in a closed state, and Fig. 4 is a plan view of the crescent lock 1 of this embodiment in a closed state (a bottom view is omitted).

[0013] As shown in Figures 1 to 4, the crescent lock 1 according to this embodiment comprises a base 2, an operation bar 3b for operating a locking unit 3c, and a shielding unit 5. The operation bar 3b is rotatably attached to the base 2 via a rotation shaft 3a. The shielding unit 5 is a plate-like member provided on the base 2 and is located in a position that shields the space between the operation bar 3b and the outer window when the lock is closed. It may be made of any material that cannot be easily penetrated by an awl or screwdriver, and is preferably a metal plate-like member.

[0014] The crescent lock 1 according to this embodiment is configured to cover 95% or more of the rear surface of the operation bar 3b (the surface facing outward from the window) in the closed state. However, since the area ratio covering the rear surface of the operation bar 3b in the closed state must be changed depending on the shape of the locking part 3c, it is preferable for security reasons to cover at least 70% or more of the rear surface of the operation bar 3b in the closed state (the surface facing outward from the window).

[0015] Figure 5 is a diagram illustrating the state in which the lock has been opened using an awl or screwdriver, which is one of the burglary methods used in conventional examples, and Figure 6 is a diagram illustrating the state in which the crescent lock 1 according to the first embodiment of the present invention has prevented opening the lock using an awl or screwdriver, which is one of the burglary methods. As shown in Figure 5, in the conventional example, a hole is made in the window glass using an awl or a screwdriver, and the operation bar of the crescent lock is pushed to unlock it. On the other hand, as shown in Figure 6, in the crescent lock 1 of this embodiment, a shielding portion 5 is provided in a position that covers the operation bar 3b, preventing the operation bar of the crescent lock from being pushed open by drilling a hole in the window glass using an awl or screwdriver.

[0016] Next, a crescent tablet 10 according to a second embodiment of the present invention will be described with reference to FIGS.

[0017] Fig. 7 is a front view of the crescent lock 10 of this embodiment in a closed state, Fig. 8 is a right side view of the crescent lock 10 of this embodiment in a closed state, Fig. 9 is a left side view of the crescent lock 10 of this embodiment in a closed state, and Fig. 10 is a plan view of the crescent lock 10 of this embodiment in a closed state (a bottom view is omitted).

[0018] 7 to 10, the crescent lock 10 according to this embodiment can also shield the side surface of the operation bar 3b in addition to the function of the crescent lock 1 according to the above-described embodiment. By shielding the side surface of the operation bar 3b, it is possible to further improve security.

[0019] Next, a crescent lock 1 according to a modification of the first embodiment of the present invention will be described with reference to Figure 11. Figure 11 is a front view of the crescent lock 1 according to the modification of the first embodiment in a closed state.

[0020] As shown in Fig. 11, in this modification, the shielding portion 5a is shaped like a cat character. Since the shielding portion 5a can be a plate-shaped member, various shapes can be adopted, including shapes rich in design, message, and wit. For example, the shielding portion 5a may be shaped to look like a sparrow perched on the outside, or it may be shaped to show a short sentence such as a haiku or a slogan.

[0021] The crescent locks 1, 10 according to the embodiments of the present invention have the following advantages. (a) Since the shielding part is installed in the base part, no special effort is required to unlock it. (i) The shielding portion only needs to be a plate-shaped member, so manufacturing costs can be reduced. (c) The shielding portion may be a plate-like member, and therefore may take various forms. (e) Even if you forget to lock the button, the shielding section can prevent theft.

[0022] The above-described embodiment is a preferred example of the present invention, and various technically preferable limitations are applied thereto, but the scope of the present invention is not unduly limited by the above description. Furthermore, not all of the configurations described in the above-described embodiment are essential components of the present invention. Furthermore, the configurations described in the above-described embodiment may be added to or combined with each other. [Industrial Applicability]

[0023] The present invention can be widely used in crescent locks and auxiliary devices for crescent locks. [Explanation of symbols]

[0024] 1, 10 Crescent Tablets 2. Base 3a Rotation axis 3b Operation bar 3c Lock part 4. Outer sash frame 4a Fastener 5, 15, 5a Shielding part 7 Button Lock

Claims

[Claim 1] A crescent lock consisting of a crescent body attached to the inner sash frame and a fastener fixed to the outer sash frame, The crescent body includes a base, an operating bar for operating the lock, and a shielding part. The operation bar is rotatably attached to the base portion, The base portion is attached to the inner sash frame, The shielding portion is located between the operation bar and the stopper in a locked state and close to the operation bar, and is provided on a surface of the base portion opposite to a surface facing the inner sash frame, the shielding portion is a plate-like member that does not shield the lock portion but shields only the operation bar and extends only in the vertical direction, A crescent lock in which the lock portion and the operating bar are positioned in a vertical straight line when viewed from the front from outside the window.

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