JPH0332696Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a mounting structure for a lever handle in a fixed lock, and more specifically, to a mounting structure for a lever handle and a spindle.

A cylindrical lock is a type of door lock that can be used for both final and temporary tightening with just a latch bolt, and when the inner handle is rotated,
A temporary locking structure in which the rotation of a spindle fitted and fixed to this handle operates a retractor housed in a lock case inside the door at its end, and the latch bolt engaged with this retractor is retracted to open the door. By operating the operation button or key provided on the handle, an interlocking member provided coaxially through the spindle is actuated, thereby blocking rotation of the handle and releasing the blocking structure. It is well known that There are various types of locks, including those with only a temporary tightening mechanism, those with a permanent tightening mechanism, and those with a fixed outer handle.

[Prior Art] By the way, the conventional handle of the above-mentioned cylindrical lock is
All of them were of the knob type, and the mounting structure with the spindle was, for example, the structure shown in FIGS. 5 and 6.

That is, the knob 17 has a structure in which an outer body 20 is fixed to an inner body 19 having a cylindrical portion 18.
A spindle 21 was fitted into the cylindrical portion 18 and fixed thereto. Reference numeral 22 denotes a retaining ring made of a spring for fixing the spindle 21 in such a manner that the bent portion 22a at the lower end of the intermediate portion of the spindle 21 is locked in the locking hole 21a, and the locking portion 22b at the upper end is projected from the cutout hole 21b. and insert this locking portion 22b into the cylindrical portion 18.
The two were fixed together by fitting into a stopper hole 18a formed in the hole 18a.

[Problems that the invention aims to solve] By the way, in the case of a knob, it is necessary to turn it by grasping it, and it is impossible to turn it by pressing it with the elbow part like a lever handle. can be,
The use of a lever handle, which is used in other door locks, is desired in some cases. However,
If the grip ball is relatively large, like a knob, and has a shape that allows it to be attached by squeezing the exterior body,
It is possible to have a structure in which a cylindrical part is provided in the inner body and the spindle is attached to this cylindrical part, but the lever handle is made of a relatively small cylindrical part for attachment and a grip part that protrudes radially from this cylindrical part. Generally, the structure is integrally cast with zinc die-casting, etc., and it is not possible to attach the inner body with a cylindrical part to the cylindrical part, as in the case of a knob.From this point of view, the lever handle type cylindrical locks were not available.

Therefore, the purpose of this invention was to develop a structure that allows the spindle to be attached to the cylindrical part without changing the structure of the spindle or even the cylindrical lock itself, and while maintaining a sufficient retaining function. It is located in a place that provides cylindrical locks.

[Means for solving the problem] In this invention, a cylindrical part for attachment, a lever handle body having a grip part protruding in the radial direction from this cylindrical part, and a spindle for operating the retractor are connected and fixed. In this case, a fixed tube that is fitted and fixed into the cylindrical part of the lever handle body is separately provided, and the spindle is fitted and fixed into this fixed tube, and the fixing between the fixed tube and the spindle is almost the same as before. Then, the locking portion of the retaining ring, which is provided at the intermediate portion by a spring bias so that the locking portion always protrudes radially outward from the notch hole, is fitted into the retaining hole formed in the fixed cylinder and fixed. On the other hand, in order to completely prevent the cylindrical part and the fixed cylinder from coming off, the structure is such that a locking pin is driven into a pin hole formed through both of them.
Furthermore, in order to completely prevent the locking pin from slipping out in the outward direction, the pin hole is countersunk at least at the inner opening of the fixing cylinder, and the pin end is caulked.

[Function] As mentioned above, the fixed cylinder is fitted into the cylindrical part of the lever handle body, and the opening on the inner side of the pin hole passing through both is used as a countersink hole, and the retaining pin is caulked, so that the fixed cylinder is fixed to the cylindrical part. It is attached to the section in a completely secure manner. Therefore, the spindle can be mounted as is with the same structure as the conventional one, and a lever handle type cylindrical lock can be obtained without any particular change in the structure of the spindle or the cylindrical lock body.

[Example] The details will be further explained below according to the example shown in the attached drawings.

In the exploded perspective view of FIG. 1, reference numeral 1 denotes a lever handle body, which consists of a cylindrical part 2 for mounting and a grip part 3 protruding in the radial direction from this cylindrical part 2, and is integrally made by zinc die-casting or the like. It is cast. Reference numeral 4 denotes a fixed cylinder that is fitted into and fixed to the cylindrical portion 2, and 5 is a spindle that is fitted and fixed to the fixed cylinder 4. This spindle 5 has protrusions 5a, 5a for operating the retractor at the tip, and an axial groove 5b is formed at the bottom. This groove 5b
In the case of an outdoor spindle, for example, when a locking rod provided coaxially through the indoor spindle is pressed via an operation button protruding from the end surface of the knob, the end of the locking rod will fit into the indoor side. It is used to disable rotation of the outer lever handle and obtain a locked state. Pin holes 6 and 7 are formed in the cylindrical part 2 and the fixed cylinder 4 that is fitted and fixed therein. After the fixed cylinder 4 is fitted into the cylindrical part 2, a stop pin 8 is pressed into the pin holes 6 and 7 and driven. Fully fixed cylinder 4
is fixed to the cylindrical part 2. In order to prevent the locking pin 8 from coming off, the inner opening of the pin hole 7 formed in the fixing tube 4 is countersunk, and the inner end of the locking pin is caulked along this countersink. This prevents loosening due to vibration and ensures complete fixation of the fixed cylinder to the cylindrical part. Reference numeral 9 denotes a notch formed at the rear end of the fixed cylinder 4, which engages a rotation prevention protrusion (not shown) formed at the inner rear end of the cylindrical part 2, so that when the lever handle body 1 is rotated, The resistance to the applied rotational torque is shared. Fixed cylinder 4
The fitting and fixing of the spindle 5 and the spindle 5 is almost the same as the conventional method, and the retaining ring 12 is biased by a spring so that the locking part 11 always protrudes radially outward from the notch hole 10 in the middle part of the spindle 5. A stopper hole 1 formed in the fixed tube 4 when the fixed tube 4 is inserted into the fixed tube 4.
3 by fitting the locking portion 11 into it. In this embodiment, the retaining ring 12
and a spring 14 are provided separately, and the spring 1 is formed by winding the inner protrusion 12a of the retaining ring 12 in a U-shape at the middle part.
The retaining ring 12 is biased radially outward by bringing both end portions of the retaining ring 12 into contact with the edges of a notched groove 5c formed perpendicularly to the divided groove 5b.
A conventional spring retaining ring 22 in which a retaining ring and a spring are integrated may also be used. As shown in the figure, the locking portion 11 of the retaining ring 12 has a tapered surface 11a formed at the center of the upper surface in the direction of insertion into the fixed tube 4, and the tapered surface 11a is formed at the tip of the fixed tube 4.
A protrusion 15 that aligns with 1a is formed. Therefore,
When the spindle 5 is inserted into the fixed cylinder 4, the tapered surface 11a is pressed by the protrusion 15, and the locking part 11 can be inserted while being pushed down against the spring pressure, making installation convenient. . 16 is
A protruding part formed on the fixed cylinder 4 that protrudes inward,
When the spindle 5 is inserted, it is inserted into the split groove 5b to prevent rotation.

[Effects of the invention] As explained above, in this invention, by devising ways to fix the lever handle body and the spindle, the spindle and the cylindrical lock body have the same structure as before, and there is no need to change the shape. , it was possible to install the lock while maintaining sufficient anti-rotation and locking functions, and it was possible to provide a lever-handle type cylindrical lock, which had been desired by some in the past but had not been realized due to problems with the installation structure. be.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing an embodiment of the lever handle mounting structure in a cylindrical lock according to this invention, FIG. 2 is an enlarged central vertical sectional view of the fixed cylinder, and FIG.
4 is an enlarged cross-sectional view of the spindle at the retaining ring portion; FIG. 5 is a partially cutaway side view showing the mounting structure of a conventional knob-type handle; and FIG. The figure is an enlarged cross-sectional view of the spindle at the retaining ring portion. 1...Lever handle, 2...Cylindrical part, 3...
Gripping part, 4... Fixed cylinder, 5... Spindle, 5b
... split groove, 6, 7... pin hole, 8... stop pin,
9... Notch, 10... Notch hole, 11... Locking portion, 11a... Tapered surface, 12... Retaining ring, 1
3... Stopping hole, 14... Spring, 15... Protrusion, 1
6... Launch part.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A lever handle body having a cylindrical part for attachment, a grip part protruding radially from this cylindrical part, and a lever handle body that is fitted into and fixed to the cylindrical part of the lever handle body. , a mounting structure consisting of a fixed tube into which the rear end of the spindle for operating the retractor is fitted and fixed. The spindle is fixed to the cylindrical part with the retaining ring provided with a spring bias so that the retaining part always protrudes radially outward from the notch hole in the intermediate part. A lever handle mounting structure for a cylindrical lock, wherein the pin is fitted into a hole and fixed to a fixed cylinder, and the pin hole is formed by countersinking at least an inner opening of the fixed cylinder and caulking the pin end. (2) A utility model registration request in which the lever handle body has a locking hole at the rear end of the cylindrical portion, and a notch formed at the rear end of the fixed cylinder engages with the locking protrusion. A mounting structure for a lever handle in a cylindrical lock according to item 1. (3) The mounting structure of the lever handle on the fixed cylinder according to claim 1 or 2 of the utility model registration claim, wherein the fixed cylinder has a protruding part that projects inward and is fitted into the groove of the spindle. .