JPH0344184B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel construction of a ball and ball device for operating a latch that locks a closed door from opening on its own.

As shown in FIGS. 1 and 2, a conventionally-used grip ball for operating a door latch has a receiving part 2 on which a rose 1 is mounted, and a locking element that rotatably holds the rose 1. The fixed part 4 of the plate 3 and the fixed part 4
A protruding shaft mounting portion 5 with a rectangular cross section connected to the core body 6 is formed in stages so that each center is located at the axis of the core body 6, and is integrally made of iron material with the core body 6. A knob cover 8 made of rust-resistant and beautiful metal such as stainless steel or brass is attached to the outer surface of the core 7, and its tip is wound and fixed inside the side end 9 of the core body 6.

This handgrip ball 10 has a groove 11 on the outer periphery inserted into the shaft mounting part 5, and the tip of the shaft mounting part 5 is pressed into the groove 11 to fix the square shaft 12, and the periphery is slightly Hole 13 bent inward and protruding
The rose 1 made of stainless steel is fitted onto the square shaft 12 and the body 14 of the fixing part 4 and placed on the receiving part 2, and the locking plate 3 is fitted onto the square shaft 12 and the shaft mounting part 5. After fitting and fixing the rose 1 rotatably to the fixing part 4 by cutting out a part of the fixing part 4 and fixing it to the fixing part 4, the square shaft 12 is removed from one side of the door. The rose 1 is fixed to one side of the door with a screw or the like through a screw hole 16, and a square shaft 12 protrudes from the other side of the door. The handle ball 10 is fitted by fitting the shaft attachment part 5 of another grip ball 10 to which the shaft 12 is not attached, and the rose 1 is fixed to the other side of the door with a screw etc. for use.

In this case, the number of parts is large, and assembly is troublesome and requires a lot of assembly man-hours.
It is difficult to manufacture and process, which increases the cost of the grip ball 10, and in addition, it is troublesome to align the axes of the grip ball 10 and the square shaft 12, and if the axes of both are misaligned, it will be difficult to attach it to the door. When the gripping ball 10 moves in a circular motion, unnecessary force is applied to the clutch mechanism, resulting in premature damage to the clutch mechanism.

The present invention was made in order to solve the above problems, and by using a gripping ball that uses a core in which the rose receiving part, square shaft, and core body are integrally molded by press drawing, In addition to reducing the number of parts and making assembly easier and reducing assembly man-hours, we also reduced the cost of the core by integrally molding the rose receiving part, square shaft, and core body by press drawing. It is an object of the present invention to provide a grip ball for an interior door that can smoothly operate a latch by aligning the axes of the latch and the square shaft.

3 and 4 showing one embodiment of the present invention will be described below. In the same figure, there is a peripheral wall 1 at the upper end.
In the center of the recess 19 of the core body 18 where 7 is formed,
A cylindrical fixing part 21 on which the rose 20 is attached, and a long square shaft part 22 connected to the fixing part 21 and having a rectangular cross section and protruding from the center are arranged so that their respective centers are connected to the core body. 18, a core 23 is made of iron material integrally with the core body 18 by press drawing, and a ring groove 2 is formed around the upper part of the fixing part 21.
4, a knob cover 8 made of rust-resistant and beautiful metal such as stainless steel or brass is attached to the outer surface of the core body 18, and its tip is wrapped inside the peripheral wall 17 and fixed. Hand ball 25
It is.

This gripping ball 25 is made of a rose 20 made of stainless steel or the like, with a hole 26 whose circumference is bent into a U-shape and protruded from the square shaft portion 22 and a fixing portion 21.
was placed in the recess 19, and the thrust washer 2
After fitting 7 onto the square shaft part 22 and the fixing part 21,
The ring groove 24 is fitted with an open-circular snap ring 28 to lock the thrust washer 27, thereby assembling the rose 20 to be rotatably held.

The assembled gripping ball 25 was made to pass through the square shaft part 22 from one side of the interior door in the same manner as before, and the rose 20 was fixed to one side of the door through the screw hole 16, and protruded to the other side of the door. The rose 20 is attached after the square shaft part 22 of the other assembled ball 25 is fitted into the opening 29 of the square shaft part 22.
is used by fixing it to the other side of the door.

In this case, the assembly of the gripping ball 25 is done by Rose 20.
After the thrust washer 27 is fitted onto the fixed part 21, the snap spring 28 is simply fitted into the ring groove 24, so assembly is extremely simple and requires less assembly man-hours. Since the core 23 is formed by integrally molding the shaft portion 22 by press drawing, the material cost is low and the cost of the core 23 can be reduced. Because the cores can be perfectly matched, there is absolutely no chance of premature clutch failure.

In the embodiment described above, the opening 29 is provided at the tip of the square shaft portion 22 for actuating the latch, but the opening 29 may not be provided depending on the intended use.
Also, a snap ring 28 fitted into the ring groove 24 was used as a locking device for the thrust washer 27, but
An annular coil spring may be used instead of the snap spring 28. Also, a thrust washer 27 is installed between the snap spring 28 and the rose 20.
However, due to the shape and structure of the locking tool and the hole 26 of the rose 20, it is not always possible to use the snap spring 2.
It is not necessary to use 8.

Since the present invention has the above configuration, it has the following effects.

(1) Assembly is extremely simple, reducing assembly man-hours and contributing to cost reduction.

(2) Since the core, including the square shaft that operates the latch, is integrally molded, the cost of materials is low, and in addition, it can be made smaller and can be provided at a relatively low cost.

(3) Since the axes of the square shaft and the core can be perfectly aligned, the latch operates smoothly and the useful life of the latch mechanism is reliably maintained.

[Brief explanation of drawings]

Figures 1 and 2 show a conventional ball grip, Figures 3 and 4 show an embodiment of the present invention, Figures 1 and 3 are perspective views of the core, Figures 2 and 4 show an example of the present invention. FIG. 4 is a sectional view with the rose mounted. 18... Core body, 19... Concave portion, 20... Rose, 21... Fixed portion, 22... Square shaft portion, 23...
... Core, 24 ... Ring groove, 25 ... Gripping ball, 27
...Thrust washer, 28...Snat spring.

Claims (1)

[Scope of Claims] 1. A core body integrally formed by press drawing, a cylindrical fixing part for mounting a rose in the center of the recess of the core body, and a ring groove around the top of the fixing part, A core is used, which comprises a long square shaft part connected to the ring groove and protruding from the center, and capable of rotatably holding the rose via a locking device fitted into the ring groove. An interior door handle featuring the following. 2. The interior door grip according to claim 1, wherein the tip of the square shaft portion is open. 3. The grip for an interior door according to claim 1 or 2, characterized in that the rose is rotatably held via a thrust washer that is locked by a snap spring fitted in a ring groove. ball. 4 A core body integrally formed by press drawing, a cylindrical fixing part in the center of the recess of the core body, a ring groove around the upper part of the fixing part, and a ring groove connected to the ring groove in the center. A core consisting of a long square shaft portion with a protruding length is provided with a rose that is fitted into the fixed portion and rotatably held via a locking device fitted into the ring groove. A ball gripping device for an interior door in which a latch is actuated by disposing gripping balls from both sides of the door so as to fit the respective square shaft portions.