JP2004270230A - Operating shaft protection mechanism of gate door lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protection mechanism surely covering an exposed section of an operating shaft of outside operation members for a gate door lock. <P>SOLUTION: The protection mechanism has a protection cylinder 28 equipped with a connecting cylinder 28a having an opening capable of surrounding a bearing section in the inside of an escutcheon 22 of the outside operation members 23 and 24, a coated cylinder 28b connected to the inside end of the connecting cylinder 28a and covering an operating shaft 17 of the outside operation members and a flange section 28c integrally formed in an opening of the outside end of the connecting cylinder 28a, and on the other hand, an insertion hole fitted to the connecting cylinder of the protection cylinder is made in a gate door 1 or the surface of a gatepost, and after the protection cylinder 28 is inserted in the insertion hole from the outside, the operating shaft 17 is inserted in the protection cylinder 28, and the escutcheon 22 is put on so as to hold the flange section 28c of the protection cylinder 28 between the inside of the escutcheon 22 and the gate door 1 or the surface of the gatepost. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an operation shaft protection mechanism (hereinafter simply referred to as a protection mechanism) for a gate lock mounted on a gate such as an accordion door which opens and closes by expanding and contracting, and particularly relates to a protection mechanism having a simple structure and functioning reliably. .
[0002]
[Prior art]
[Patent Document 1] Japanese Patent Application No. 2002-196908 The present applicant has previously proposed a new gate latch device and a lock device therefor with the registered new model No. 2,126,822.
[0003]
As shown in FIGS. 1 and 2, the latch device includes a latch portion 3 attached to one of the gate 1 and the gate post 2 (the gate 1 in the illustrated embodiment), and a horizontal bar 4 attached to the other. (See FIG. 2).
[0004]
As shown in FIG. 2, the latch portion 3 includes a first and a second pair of hooks 6 and 7, each of which has a hook-shaped portion that engages with the strike bar 4.
[0005]
The hooks at the tips of the first and second hooks 6 and 7 are formed so that the tips are opposed to each other so that the outer edge forms a V-shape. A long hole 9 opened in the elongated first connecting portion 8 protruding substantially in parallel with and integrally with the second connecting portion protruding symmetrically with the first connecting portion 8 in the middle portion of the second hook 7. The pin 12 implanted at the tip of 11 is engaged with each other.
[0006]
Furthermore, the first and second hooks 6 and 7 are rotatably supported at their respective base ends by a support shaft 13, and are resilient by a hook spring 14 as a torsion coil spring wound around the base end. The tips of the hooks are urged in the direction of closing close to each other.
[0007]
In the conventional latch device configured as described above, when the gate is closed, the tips of the hooks 6, 7 are shown by the chain lines in FIG. 2 due to the wedge action caused by the engagement between the bar 4 and the hooks 6, 7. When the bar 4 passes through the hook-shaped portion of the hook and the hook is closed by the elasticity of the hook spring 14, the bar 4 is automatically grasped by the hook and the gate 1 is locked by the gate post. You.
[0008]
As shown in FIG. 2, the latch device is provided with a lock lever 15, which is rotatably supported at a central portion and has one end (the longer one in FIG. 2). When the end of the arm takes the angular position shown by the solid line, for example, the first hook 6 and the second hook 7 connected thereto can be locked by selectively contacting the base end of the first hook 6. .
[0009]
At the center of the lock lever 15, a deformed hole 16 (square hole in FIG. 2) is opened as shown in the figure, and the latch 3 is penetrated in the thickness direction (horizontal direction) as shown in FIG. A cylinder lock 18 is mounted on the outer end of the operation shaft 17 having a modified cross section inserted through the modified hole 16, and a thumb turn 21 is mounted on the inner end thereof through a clutch 19.
[0010]
[Problems to be solved by the invention]
In the conventional gate latch device having the above-described structure, the operation shaft 17 may be visible from the outside because there are many gaps in the gate or the pillar on which the latch portion 3 (see FIG. 3) is mounted.
[0011]
As is apparent from FIG. 1, since it is originally very easy to insert the hand from the outside of the gate 1 to the inside to operate the inner thumb turn, it is necessary to operate the operation shaft 17 from the outside as described above. In this case, a decrease in security is not a problem. However, mischief such as inserting a foreign object into a gap between the operation shaft 17 and the latch portion 3 is possible, which may cause a malfunction of the latch device. Must take sufficient measures.
[0012]
This situation is not limited to the external operation member such as the thumb turn shown in the drawing, but also applies to the operation shaft of another external operation member such as a handle or a knob for operating the retractor to insert and remove the latch bolt as described later. is there.
[0013]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a protection mechanism that reliably covers an exposed portion of an operation shaft of an external operation member and solves the above-described inconvenience.
[0014]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 has a latch portion mounted on one of a gate and a gate post, and a latch that carries an operation mechanism of the latch portion and is mounted on a surface of the gate or the gate post. A cation and an external operating member rotatably supported by the escation and having an external operating member linked to an operating mechanism, wherein a connection cylinder having an opening capable of surrounding a support portion on the inner surface of the escation of the external operating member; A protection cylinder provided with a coating cylinder connected to an inner end of the connection cylinder and covering an operation shaft of an external operation member, and a flange portion integrally formed at an outer end opening of the connection cylinder; Alternatively, an insertion hole that fits with the connection tube of the protection cylinder is opened on the surface of the gate post, and after inserting the protection cylinder from the outside into this insertion hole, the operation shaft is inserted into the protection cylinder, and the inner surface of the escation and the gate are opened. Or between the surface of the gate post and Characterized by being adapted to attach the escutcheon so as pinches the flange portion.
[0015]
【Example】
An embodiment of the present invention will be described below with reference to FIGS.
In FIG. 4, reference numeral 17 denotes an operation shaft of the lock lever (see FIG. 3), and reference numeral 22 denotes an S-axis attached to the inside or outside of one of the gates or the gate post (gate in the illustrated embodiment) with a latch (not shown) interposed therebetween. Each cation is shown.
[0016]
In the illustrated embodiment, since the operating mechanism is provided symmetrically between the inside and outside with respect to the latch portion, in FIG. Further, in FIG. 4, the symbol K indicates the outside, and the symbol N indicates the inside.
[0017]
At a portion where the escaping 22 and the extension of the operation shaft 17 intersect, the first plug 23 on the inside (latch portion side) and the second plug 24 on the outside are independently rotatable and mutually rotatable. It is attached in connection with.
[0018]
As shown in FIGS. 5 and 6, the first plug 23 is a cylindrical body having a generally stepped shape, and has a square hole 25 (see FIG. 6) formed coaxially at the small-diameter inner end thereof as an operating shaft. (See FIG. 4) to be integrally connected to the operation shaft 17.
[0019]
As shown in FIGS. 7 and 8, the second plug 24 has a shape in which a prism and a cylinder are connected to each other, and the cylinder is rotatably supported by the escation 22.
[0020]
As shown in FIGS. 7 and 8, the second plug 24 has a connection hole 26 having a modified cross section that penetrates the second plug 24 along the axis of rotation.
[0021]
In the illustrated embodiment, the cross-sectional shape of the connecting hole 26 is set to be the same as that of the key hole of the cylinder lock. The cross-sectional shape of the connection hole 26 may be, for example, the same as that of the keyhole of the cylinder lock mounted on the door opening.
[0022]
On the other hand, at the outer end of the first plug 23 connected to the second plug 24, as shown in FIG. 5 and FIG. Is formed.
[0023]
The cross-sectional shape of the connection hole 26 of the first plug 23 is such that the key 27 (see FIG. 4) of the cylinder lock having the same cross-section as the connection hole 26 inserted into the connection hole 26 of the second plug can be inscribed. However, the cross-sectional shape of the first plug 23 may be the same.
[0024]
The outer ends of the first and second plugs 23 and 24 are prevented from coming off by engagement between the outer peripheral step of the second plug 24 and the step of the escation 22. The inner ends of the first and second plugs 23 and 24 are A retaining ring 29 (see FIG. 9) is used to prevent the retaining ring.
[0025]
In the illustrated embodiment, the first and second plugs 23 and 24 are connected to each other via a duplicate key 27, so that the latch unit cannot be operated without the duplicate key. Since the invention is applied, a retaining ring with a foot is used for retaining the plug 24.
[0026]
However, in a normal design, or when an external operation member such as a handle is carried on an escation, the handle is stepped so as not to move the handle or the like inward while being prevented from falling out. Therefore, a portion protruding from the inner surface of the escation is prevented from falling off by a retaining ring (not shown).
[0027]
On the other hand, the protection cylinder 28, which is a main part of the protection mechanism according to the present invention, is configured as described below. That is, a coating cylinder 28b that covers the operation shaft 17 of the external operation member is smoothly connected to the inner end of the connection cylinder 28a having an opening that can surround the first plug 23 steps protruding from the inner surface of the escation.
[0028]
Further, a flange portion 28c is formed integrally with the outer end opening of the connection tube 28a.
In order to accommodate this flange portion 28c, as shown in FIG. 4, the dimensions and dimensions of each portion are set such that a gap is maintained between the gate and the inner surface of the escation when the escation 22 is mounted on the surface of the gate 1 or the like. Needless to say, the shape should be set.
[0029]
In order to mount the protection cylinder 28 configured as described above on the gate 1 or the like, an unnumbered insertion hole that fits with the connection cylinder 28a is opened on the surface thereof, and the protection cylinder 28 is inserted into the insertion hole from the outside. After that, the operation shaft 17 is inserted into the protection cylinder 28.
[0030]
Thereafter, the escation is attached so that the flange portion 28c of the protective cylinder is sandwiched between the inner surface of the escation 22 and the surface of the gate or the pillar.
[0031]
In the illustrated embodiment, at this time, the leg of the retaining ring 29 (see FIG. 9) is fixed by being pressed against the inner surface of the escation 22 by the flange portion 28c.
[0032]
At this time, when the flange portion 28c is lifted up by the leg portion of the retaining ring and the protective cylinder 28 moves wobble, a concave portion for accommodating the leg portion may be formed on the inner surface of the escation (shown in the figure). Zu).
[0033]
When the protective cylinder 28 shown in FIG. 4 is mounted, if the inner opening edges of the outer and inner coating cylinders 28b, 28b are brought into contact with the side plates of the latch portion 3, the operation shaft 17 is completely fixed by the protective cylinder 28. And there is no mischief from the outside.
[0034]
【The invention's effect】
As is apparent from the above description, according to the present invention, since the connection tube is fitted into the insertion hole opened in the surface of the gate or the like, the protection tube does not move in the radial direction, and is protected for the same reason. The distance between the cylinder and the operating shaft is kept constant, so that the operation is reliable and stable.
[0035]
In addition, since the flange portion is sandwiched and fixed between the inner surface of the escation and the surface of the gate, etc., the run-out of the core of the protective cylinder and the like are reliably prevented, and in this sense, the operation of the protective mechanism is reliable and stable. .
[0036]
In addition, since the protective cylinder is a cylindrical body having a flange formed at one end, various effects such as a very simple structure of the protective mechanism can be obtained.
[Brief description of the drawings]
FIG. 1 is a side view showing an outline of an accordion door.
FIG. 2 is a longitudinal sectional side view showing an embodiment of a conventional latch device with a gate opened.
FIG. 3 is a schematic partial cross-sectional front view showing an example of a conventional operation mechanism.
FIG. 4 is a sectional view showing an example of a protection mechanism according to the present invention.
FIG. 5 is a front view of a first plug.
FIG. 6 is a longitudinal sectional view thereof.
FIG. 7 is a front view of a second plug.
FIG. 8 is a longitudinal sectional view thereof.
FIG. 9 is an external perspective view of a retaining ring.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Gate 2 Gate pillar 3 Latch part 4 Bar 5 Strike part 6 First hook 7 Second hook 8 First connecting part 9 Elongated hole 11 Second connecting part 12 Pin 13 Support shaft 14 Hook spring 15 Lock lever 16 Deformed hole 17 Operation shaft 22 S cation 23 First plug 24 Second plug 25 Square hole 26 Connecting hole 27 Duplicate key 28 Protection tube 28a Connection tube 28b Coating tube 28c Flange part 29 Retaining ring

Claims (1)

A latch portion mounted on one of the gates or the gate post, an operation mechanism for the latch portion, and an escation mounted on the surface of the gate or the gate, and the escation being rotatably supported by the escation, A connection cylinder having an opening capable of surrounding a support portion on the inner surface of the escation of the external operation member, and an operation shaft of the external operation member connected to an inner end of the connection cylinder. And a protective cylinder provided with a flange portion integrally formed at an outer end opening of the connection cylinder, and an insertion hole that fits with the connection cylinder of the protection cylinder is provided on the surface of the gate or the gate post. After inserting the protection cylinder from the outside into this insertion hole, the operating shaft is inserted into the protection cylinder, and the flange of the protection cylinder is sandwiched between the inner surface of the escation and the surface of the gate or the gate post. Attach escation Gates lock operating shaft protection mechanism, characterized in that the the like.

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