JPH0332203Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a door handle device with an axial pin tumbler locking mechanism used for a power distribution panel installed outdoors.

(Prior art) In conventional door handle devices with axial pin tumbler locking mechanisms, the relationship between the internal dimensions of the keyway measured in the axial direction of the locking shaft and the thickness of the handle-shaped key has not been carefully examined. In many cases, there was a considerable gap between the key groove and the handle-shaped key.

In some cases, the dimensional difference between the inner dimension of the keyway extending in the axial direction of the locking shaft and the thickness of the handle-shaped key was greater than the depth of the recess on the back side of the handle-shaped key that engaged with the drive pin.

In this case, since the drive pin and the handle-shaped key were not engaged at all or were very insufficiently engaged, the handle-shaped key sometimes came off during rotation of the locking shaft.

If the handle-like key comes out during rotation when the small pin receiving hole on the catch side and the small pin receiving hole on the locking shaft side are not communicating, the drive pin will simply move along the small hole on the locking shaft side. However, since the drive pin cannot retreat a sufficient distance toward the seat, reinsertion of the handle-shaped key becomes difficult.

(Problems to be Solved by the Invention) Therefore, an object of the present invention is to provide a door handle device with an axial pin tumbler locking mechanism that makes it impossible to remove the handle-shaped key during rotation.

(Means for Solving the Problem) The gist of the present invention will be explained below using reference numerals in the attached drawings. A keyway 5 is provided in the transverse direction of the locking shaft 3, a small hole 7 is provided in the main body portion 6 of the catch 1 in the axial direction around the shaft hole 2, and a small hole 7 is provided in the base end 3b of the locking shaft 3. A small hole 8 is provided in the axial direction corresponding to the hole 7, and the driven pin 9 fitted into the small hole 7 is biased in the projecting direction by a spring 10, and the front end portion of the drive pin 11 inserted into the small hole 8 is protrude into the keyway 5,
Recesses 12a, 12b, 12 that engage with the drive pin 11 are provided on the back side of the handle-shaped key 4 that is inserted into the key groove 5.
In a door handle device with an axial pin tumbler locking mechanism provided with axial pins c and 12d, the inner dimension 5d of the keyway 5 taken in the axial direction of the locking shaft 3 and the handle-shaped key 4
The dimensional difference g from the thickness 4d of the recesses 12a, 1
2b, 12c, and 12d.

(Function) Inner dimension 5 of keyway 5 in the axial direction of locking shaft 3
Since the dimensional difference g between d and the thickness 4d of the handle-shaped key 4 is smaller than the depth of any of the recesses 12a, 12b, 12c, and 12d, the handle-shaped key 4 inserted into the key groove 5 is No matter how much you move the drive pins 11, the tips of the drive pins 11 will not fit into the recesses 12.
There is no escape from a, 12b, 12c, 12d... That is, the front end of each drive pin 11 has a recess 1.
2a, 12b, 12c, and 12d, and abut against the inner wall surfaces of the recesses 12a, 12b, 12c, and 12d to prevent the handle-shaped key 4 from escaping from the keyhole 5.

(Embodiment) In the illustrated embodiment, the front end 3b of the locking shaft 3 is formed to have a sufficiently large diameter in order to make the inner dimension of the locking shaft 3 in the transverse direction, that is, the width of the keyway 5, sufficiently wide. ing. The drive pin 11 is longer than the small hole 8, and its front end portion is formed to have a small diameter.

The shoulder portion 1 of the drive pin 11 is attached to the front end step portion 8a of the small hole 8.
1b abuts, there is a space between the tip of the drive pin 11 protruding into the keyway 5 and the inner wall surface 5a of the keyway 5.
A gap is provided to facilitate insertion of the handle-shaped key 4.

The key groove 5 provided in the vertical plane is a blind hole with only the key insertion opening 5b at one end open, and when the locking shaft 3 is in the locked position, the key insertion opening 5b is opened.
becomes downward.

There are four recesses 12 on the back side of the handle-shaped key 4.
a, 12b, 12c, and 12d, the depths of the recesses 12a and 12c are equal;
2d is shallower than the recesses 12a and 12c. The depth of these shallower recesses 12b and 12d is
Since the dimension difference g between the inner dimension 5d of the key groove 5 and the thickness 4d of the handle-shaped key 4 is set to be larger than the dimension difference g, the four drive pins 11 are all connected to the recesses 12a,
It never escapes from 12b, 12c, and 12d.

In the embodiments shown in FIGS. 1, 2, and 4, the recess is a mortar-shaped circular hole, but the shape of the recess is not limited to this, and as shown in FIG. It can also be formed into a groove shape. Further, the number of recesses, driving pins, and driven pins is not limited to what is shown in the drawings.

(Effect of the invention) As described above, in the present invention, the dimensional difference g between the inner dimension 5d of the key groove 5 taken in the axial direction of the locking shaft 3 and the thickness 4d of the handle-shaped key 4 is Since the depth is set to be smaller than any of the depths of the recesses 12a, 12b, 12c, and 12d on the back surface, rattling of the handle-shaped key 4 in the keyway 5 is suppressed to a minimum, and each drive pin 11 and the recesses 12a, 12b are ,12c,1
The engagement with 2d is reliably maintained. In this way, the situation where the handle-shaped key 4 falls out during the rotation of the locking shaft 3 does not occur at all.

[Brief explanation of the drawing]

FIG. 1 is a right side view of a door handle device according to an embodiment of the present invention when a key is inserted, and FIG. 2 is a perspective view of a handle-shaped key used in the door handle device. FIG. 3 is a perspective view of a handle-shaped key in another embodiment of the present invention. Figure 4 is A- in Figure 1.
It is an A-line sectional view. 1...Catch, 2...Shaft hole, 3...Lock shaft, 4...
... Handle-shaped key, 5 ... Key groove, 6 ... Main body of catch, 7 ... Small hole for receiving driven pin, 8 ... Small hole for receiving drive pin, 9 ... Driven pin, 10 ... Spring,
11... Drive pin, 12a, 12b, 12c, 1
2d... recess.

Claims (1)

[Scope of utility model registration request] A locking shaft 3 rotatably inserted into the shaft hole 2 of the catch seat 1
A keyway 5 is provided in the front end 3b of the locking shaft 3 in the transverse direction, and a small hole 7 is provided in the main body portion 6 of the catch 1 in the axial direction around the shaft hole 2. 3b is provided with a small hole 8 in the axial direction corresponding to the small hole 7, and the driven pin 9 fitted into the small hole 7 is biased in the projecting direction by a spring 10, and the drive pin inserted into the small hole 8 is biased in the projecting direction. 11 is made to protrude into the key groove 5, and recesses 12a, 12b, 12c, and 12d that engage with the drive pin 11 are provided on the back side of the handle-shaped key 4 that is inserted into the key groove 5,
Inner dimension 5d of keyway 5 taken in the axial direction of locking shaft 3
A door handle device with an axial pin tumbler locking mechanism in which the dimensional difference g between the thickness 4b of the handle-shaped key 4 and the thickness 4b of the handle-shaped key 4 is smaller than the depth of any of the recesses 12a, 12b, 12c, and 12d.