JPH076404Y2 - Lock lock / shaft breakage prevention structure - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is an improvement of a lock, and more specifically, a cylinder fixed to the lid by the cleaving force of the lid when the latch is hooked on the case body. The present invention relates to a latch / shaft breakage prevention structure that can prevent the latch from warping and the shaft from being broken by giving it to parts, such as a parking meter for outdoor road regulation and a parking lock for automatic unmanned parking monitoring. Greatly used as a lock for a parking device.

[Problems to be Solved by Conventional Techniques and Inventions] As is well known, most parking devices such as parking meters and parking locks are installed on the road. Therefore, in this type of parking device, a minus-shaped screwdriver is inserted into the gap between the case body and the lid locked to the case body to open the lid and open the money in the case body. I am struggling with financial theft prevention measures to prevent the accidental theft of stealing. This is because the cause is due to the structural structure of the lock used in the parking device.

That is, in the lock of the parking device, as shown in FIG. 2, the shaft (2) is rotatably fitted inside the cylindrical cylinder (1) screwed to the lid (D) to be locked. The latch (3) is hooked on the case body (C) because the latch (3) is attached to the shaft (2) so that the latch (3) can be hooked and pulled out on the case body (C). In the locked state of the lid (D), the cleaving force that tries to open the lid is directly applied to the latch (3) and indirectly to the shaft (2) via the latch. Therefore, the cleaving force of the lid (D) causes the latch (3) to warp back to the inside of the case body (C) to release the engagement with the case body, and the shaft (2) to the cylinder (1). There is a structural problem that the portion between the latch (3) and the latch (3) is bent and broken.

The present invention has been made in view of the above-mentioned drawbacks of the lock, and secures the cleaving force of the lid to the lid when the latch is in the hooked state. It is a technical object to provide a lock / latch breakage prevention structure for a lock, which is suitable for a money theft prevention measure, in which warp of the latch and breakage of the shaft are prevented by applying the lock to the cylinder portion.

[Means for Solving the Problems]

Means adopted by the present invention to solve the above technical problems will be described below with reference to the accompanying drawings.

That is, the present invention has a shaft (2) rotatably fitted in a cylindrical cylinder (1) fixed to a lid (D) to be locked, and the shaft (2) has the above-mentioned structure. Lid (D)
On the back side of the lid (D), the key is to insert the key from the front side and rotate the shaft in a predetermined direction to lock / unlatch the latch (3) to / from the case body (C). While the flanged socket (4) is fixed to the outer peripheral end of the cylinder (1), the flanged socket (4) is loosely fitted between the cylinder (1) and the latch (3), And, when the latch (3) is hooked to the case body (C) at the end of the lid itself, the latch (3) warps due to the cleaving force of the lid (3), and the shaft due to the warping of the latch (3). A stopper piece (51) that can abut the flange (41) of the flanged socket (4) so as to prevent the bending of (2).
By adopting a means of fixing the ring-shaped cap (5) provided with the above to the latch (3),
The above-mentioned technical problems have been solved.

[Action]

Next, the operation of the lock shaft breakage preventing structure of the lock according to the present invention will be described.

When the lid (D) in which the latch (3) is hooked on the case body (C) is locked and the lid is to be opened, the flanged socket (4) together with the cylinder (1) opens the lid (D). When the flange (41) of the socket with the flange moves slightly in the opening direction, the stopper piece (5
1), whereby the cleaving force of the lid (D) is concentrated and hung on the flanged socket (4) via the cap (5), so that the latch (3) bends back and the shaft (2) bends. It is possible to prevent breakage due to.

〔Example〕

Hereinafter, the present invention will be described in more detail with reference to the embodiments shown in the accompanying drawings. In addition, the reference numerals attached to the drawings of the lock structure of the present embodiment, in order to make the features of the present invention more understandable,
The same reference numerals as those used in the drawings of the conventionally known lock structure are used.

In FIG. 1, reference numeral (L) indicates the lock of the product of this embodiment, which is inserted into the through hole (d1) of the lid (D) screwed to the case body (C) so as to be openable and closable. The cylindrical cylinder (1) fitted therein, the shaft (2) rotatably fitted inside the cylinder (1), and the shaft (2) fitted in a close fit state and A cam plate (21) that locks with a protrusion (1a) provided at the end of the cylinder (1) as the shaft rotates and restricts the amount of rotation of the shaft with respect to the cylinder, and the cam plate (21). ), The packing (2) is attached to the collar (23) inserted into the shaft (2) on the rear side.
2) and a latch (3) fitted together with the nut (2) that is screwed onto the shaft (2) at a screw portion (not shown) of the shaft (2) to fix and fix the collar (23) to the shaft.
4), a flanged socket (4) screwed to a screw part (not shown) of the cylinder (1) on the back side of the lid (D) to fix the cylinder to the lid (D), and the lid (D). And a ring-shaped cap (5) firmly fixed to the latch by a plurality of screws (31, 31, ...) Between the latch (3) and the latch (3). And
The lock (L) has a key (not shown) inserted into the shaft (2) from the front side of the lid (D) so that the shaft has a certain angle in a predetermined direction within a rotation allowable range of the cam plate (21). By rotating the latch (3), the case body (C)
It can be hooked into and removed from the locking part (C1).

The packing (22) is made of an elastic material, and is slightly compressed when the latch (3) is hooked on the locking part (C1) of the case body (C), and the locking part is repulsive force. The latch (3) and the lid (D) act to hold (c1) together, and the latch (3) and the lid (D) come into close contact with the locking portion (c1).

The most important structure in the present invention is that the lid (D) is opened by the cleaving force acting on the lid (D) when the latch (3) is hooked on the locking portion (C1) of the case body (C). Then, the flanged socket (4) is configured to abut the cap (5).

That is, in the lock (L) of the product of this embodiment shown in FIG. 1, the flange (41) is formed at the latch side end of the flanged socket (4). On the other hand, the cap (5)
Is formed in a ring shape so as to surround the flanged socket (4) in a loosely fitted state with a small gap therebetween, and has a smooth shaft (2) with respect to the flanged socket (4).
It guarantees the rotational movement of. A stopper piece (51) facing the flange (41) of the flanged socket (4) in the axial direction of the shaft (2) is provided around the end of the cap (5) on the lid side.

Then, in the locked state of the lid (D) in which the latch (3) is hooked on the case body (C), a minus-shaped screwdriver is inserted into the gap between the case body (C) and the lid (D). When the socket is opened in the direction of the arrow, the flanged socket (4) moves slightly together with the cylinder (1) in the opening direction of the lid (D), and the flange (4
Since 1) contacts the stopper piece (51) of the cap (5), the cleaving force of the lid (D) is concentrated on the flanged nut (4) via the cap (5), and therefore the latch ( It is possible to completely prevent the bending of the shaft (2) due to the bending back of (3) and the bending back of the latch.

Further, since the lock (L) having such a structure has the stopper piece (51) of the cap (5) facing over the entire side surface of the flange (41) of the flanged socket (4) on the lid side, No matter what direction the lid (D) is opened from, the latch (3) does not warp in that direction and the shaft (2) does not bend in that direction, preventing the lock from breaking from any direction. It is possible.

The lock of this embodiment is constructed as described above, but the present invention is not limited to the above-mentioned embodiment.
Various modifications are possible within the scope of the "claim for utility model registration". For example, the stopper piece (51) of the cap (5) is formed in a claw shape, and the claw-shaped stopper is provided with a flanged socket (4). It is of course within the technical scope of the present invention to bring it into contact with the flange (41).

[Effect of device]

As described above with reference to the embodiments, according to the present invention,
A flanged socket is fixed to the outer peripheral edge of the cylinder on the back side of the lid, and a cap that can be loosely fitted to the flanged socket is fixed to the latch. Since the cleaving force of the is concentrated on the flanged socket via the stopper piece of the cap, structural problems such as warping of the latch and breakage of the shaft can be solved, and the parking device installed outdoors can be prevented from theft. Greatly helps.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing the internal structure of the lock of the product of this embodiment, and FIG. 2 is a vertical sectional view showing the internal structure of the lock of a conventionally known product. (D): lid, (C): case body, (1): cylinder,
(2): Shaft, (3): Latch, (4): Socket with flange, (41): Flange, (5): Cap,
(51): Stopper piece.

Claims (1)

[Scope of utility model registration request] 1. A shaft (2) rotatably fitted in a cylindrical cylinder (1) fixed to a lid (D) to be locked, the shaft (2) having the lid. (D) A key is inserted from the front side to rotate the shaft in a predetermined direction, and the latch (3) fixed to the shaft is locked and pulled out from the case body (C), and the lid ( While the flanged socket (4) is fixed to the outer peripheral end of the cylinder (1) on the back side of D), the flanged socket (4) is arranged between the cylinder (1) and the latch (3). Of the latch (3) when the latch (3) is loosely fitted and the latch (3) is hooked to the case body (C) at the end portion on the side of the lid itself, and the latch warps back due to the cleaving force of the lid (D). The shaft (2) is prevented from bending due to the warping of Stopper piece (51) that can abut the flange (41) of the socket (4) with a lunge
A latch-shaft breakage preventing structure characterized in that a ring-shaped cap (5) provided with is fixed to the latch (3).