JPH0236748B2 - DOAJO - Google Patents

Description

[Detailed Description of the Invention] (1) Purpose of the Invention (Field of Industrial Application) This invention provides a lock for a door that rotates to open and close, particularly a handle for opening the door, and a latch that is operated while holding the handle. It concerns a door lock with a thumb lever.

(Prior Art and Problems to be Solved) In the above-mentioned door locks, for example, there is one in which the door latch is retracted from the front by pressing the thumb lever while grasping the handle. −11090 Publication, Utility Model Release 57
- Various proposals have already been made, as seen in Publication No. 117160, but all of these convert the pressure of a thumb lever into a sliding movement of an appropriate member, and further convert this movement into rotation of a cam member. However, this rotational movement is usually converted into linear movement of the latch, but in any case, these known devices have a structure in which the relationship between the sliding member and the cam member is limited. Since it is uniquely defined, if the left and right doors open in the wrong direction, it is necessary to change the related structural parts and make adjustments accordingly, making management difficult and disadvantageous in terms of cost. I couldn't escape it.

The present invention has been made in order to cope with such a situation, and aims to provide a door lock that can be easily adapted to the opposite hand by rearranging parts, and that is easy to install and manage. be.

(2) Structure of the invention (technical means for solving the problem and its operation) In order to achieve the above object, the present invention provides a door lock with a drive lever that is activated by grasping a handle attached to the door. , a slide plate that is elastically displaced in a predetermined direction by the operation of the drive lever, a cam plate that rotates due to the displacement of the slide plate, and a rotating cam that rotates in response to the cam plate; It is removably attached to the rotating cam and has a semicircular core that operates the latch bolt of the lock, the end of the slide plate is always in elastic contact with the drive lever, and the cam plate has a semicircular core that operates the latch bolt of the lock. , engages the slide plate;
The rotating cam is provided with a pin that can selectively rotate the cam plate in either one direction or the opposite direction by changing the direction of the cam plate according to the displacement thereof. In order to rotate in response to the rotation of the cam plate, a pin that engages with the cam plate is provided, and in order to change the rotation direction of the semicircular core, two pins are provided at positions 180° apart from each other. It is characterized by having an attachment part.

With this configuration, in the case of a door with left and right hand sides, the direction of rotation is reversed when the drive member (the semicircular core described above) inside the lock is rotated to make the latch appear and retract from the side of the door. Therefore, it is necessary to replace the lock itself or its parts each time, but with the above structure, this is not necessary and it can be easily adapted to any of the locks by rearranging the parts.

(Description of Embodiments) Fig. 1 shows a door lock handle device A according to the present invention.
This is a perspective view of , and it is assumed that by gripping the handle 1 and pressing the lever 2 with a finger, the drive lever 3 connected to the lever 2 is displaced upward in the figure. It is assumed that it comes into contact with a slide plate, which will be described later, and displaces it upward.

FIG. 2 is an exploded perspective view of the drive unit disposed between the drive lever 3 and a latch bolt (not shown), and shows a fixed case 5 having a hole 5'' and a slit 5' on the lower side. There are shoulder parts 7a and 7b inside the
A slide plate 4 is provided with bent portions 8a and 8b formed on the slide plate 4.
and bent portions 10a, 10 formed on the cover 5.
Springs 9, 9 are installed between the slide plate 4 and the slide plate 4 to always move the slide plate 4 downward as shown in the figure. It is assumed that the structure is such that it is in constant contact with the

Reference numeral 11 denotes a cam plate, which has a hole 13 and pin holes 12a, 12b, and pins 14a, 14b are attached to these pin holes on the side of the slide plate 4, as shown in the figure. The plate 11 has small holes 11a and 11b formed therein.

On the opposite side to the pins 14a and 14b,
A rotary cam 15 is arranged opposite to the cam plate 11, and pins 16a, 16b provided on a flange 15' of the cam 15 are fitted into the small holes 11a, 11b.

Furthermore, in the hole 13 of the cam plate 11,
The round core part 17' of the shaft core 17 fitted with the spring 18 is fitted, and the end of the round core part 17' reaches the hole 5'' of the case 5, and the square hole 15'' of the rotary cam 15 is fitted. A square core portion 17'' of the shaft core 17 is fitted into the square core portion 17'' of the shaft core 17.

The rotating cam 15 has a substantially semi-circular hole 19a,
19b, and a semicircular core 20 is removably attached to either one of them.

Reference numeral 6 denotes a lid body provided with a notch 6', into which the rotary cam 15 is loosely fitted into a hole 6'' formed therein;
It is assumed that the lid 6' is fixed to the case 5 in this state.

This structure is disposed in the recess at the top of the handle shown in FIG. 1 so that the drive lever 3 comes into contact with the lower surface of the bent portion 4' of the slide plate 4.

To open the door, squeeze handle 1 and
When the lever 2 is pressed, the drive lever 3 is thereby displaced upwardly, causing the sliding plate 4 to move upwardly against the action of the springs 9, 9, thereby causing the shoulder of said sliding plate 4 to move upwardly against the action of the springs 9, 9. Either one of the parts 4a, 4b is attached to the cam plate 11 with a pin 14a (in the case of 1 in FIG.
) in the case of cam plate 11) to rotate it, the small holes 11a, 11b of the cam plate 11
The pivot cam 15, and therefore the semicircular core 20 disposed thereon, is pivoted through the pins 16a and 16b that engage with the pivot cam 15, thereby displacing the latch bolt via known means (not shown). can be done.

As described above, the rotary cam 15 is provided with two holes in which the semicircular core 20 can be placed, and the pins 14a and 14b to be attached to the cam plate 11 are attached to the slide plate 4 as shown in FIGS. 1 and 2. Shoulder part 4
Since it is configured so that it can be selectively engaged with either a or 4b, it can be used even when the door is opened on the left or right side.
The cam plate 11 can be easily adapted by rotating the cam plate 11 by 180 degrees without requiring any special replacement parts.

(3) Effects of the Invention As explained above, according to the present invention, a door lock equipped with a handle and a lever that is operated while grasping the handle can be easily opened regardless of the door opening style. It is easy to install, does not require many parts, and greatly contributes to cost reduction.

[Brief explanation of drawings]

Figure 1 is a perspective view showing the handle part, Figure 2 is an exploded perspective view of the locking device that is attached to the handle and operates the latch, and Figure 3 1 and 2 show the changing positions of the left and right cam plates. It is a front view. 1... Handle, 2... Lever, 3... Drive lever, 4... Slide plate, 5... Case, 6
... Lid body, 11 ... Cam plate, 15 ... Rotating cam, 17 ... Axis core, 20 ... Semicircular core.

Claims (1)

[Claims] 1. A drive lever that is operated by grasping a handle attached to the door; a slide plate that is elastically displaced in a predetermined direction by the operation of the drive lever; and displacement of the slide plate. a cam plate that rotates in response to the cam plate; a rotating cam that rotates in response to the cam plate; and a semicircular core that is detachably attached to the rotating cam and that operates the latch bolt of the lock. , an end of the slide plate is always elastically in contact with the drive lever, and the cam plate has a mechanism that engages with the slide plate and changes the orientation of the cam plate by displacement thereof. Therefore, the rotary cam is provided with a pin that can selectively rotate the cam in either one direction or the opposite direction, and the rotary cam is provided with a pin that can be rotated in response to the rotation of the cam plate. A door lock which is provided with a pin that engages with a cam plate and has two attachment parts located 180 degrees apart from each other in order to change the direction of rotation of the semicircular core.