JPH032609Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a door lock that is provided with a cushioning material on the closing side of the lock rod to reduce impact and prevent breakage.

[Background technology]

The lock rod of the lock body often closes the door with its protrusion due to forgetting to operate it, and in this case, the free end of the door tends to be damaged by the impact of contact with the receiving plate provided on the wall facing.

In addition, the inventors of the present invention have applied for patent application No. 57-93753
58-209823), there are handles on both sides of the door,
We proposed a door device that can automate the lighting of lighting fixtures by installing an operating body such as a grip and turning on an electric circuit by closing the operating body located on the side of the door that passes through. Even when the room to be entered is, for example, a dark room, this device can be turned on by using the operating body whose location is obvious, thus making the lighting operation easy and reliable. Further, the lock lever of the door device is provided with a blocking portion that protrudes to prevent the door from closing and can be retreated only by operation of the operating body, thereby ensuring the closing of the door. This was a funeral home that prevented people from forgetting to turn off lighting fixtures, etc., but for example, the blocking part of the lock lever collides with the receiving plate when the door is closed if the user forgets to operate the operating member, so it can easily become a problem. Due to the impact force, unreasonable force tends to be applied to the lock lever and the receiving plate, which may cause damage to the lock rod and the receiving plate.

[Purpose of invention]

The purpose of the present invention is to provide a door lock that can solve such problems and can be suitably adopted for doors of a type that opens and closes an electric circuit according to the opening/closing operation of the door. One embodiment will be described based on the drawings, taking as an example a case in which it is formed as a door lock.

[Disclosure of invention]

Example In the figure, the door lock 1 of the present invention has a lock rod 11 on the door D.
A cushioning material 8 is provided on the closing side side of the protruding portion from the side.

The lock rod 11 is attached to the lock body 1a, and the closing side side of the protruding portion 2 is formed into a flat surface extending in the longitudinal direction of the lock rod 11, so that the door D
It is formed as a blocking portion 2a that prevents the closing of the door. The lock body 1a is attached to the free end of the door D, and controls a switch S connected in parallel to the electric circuit EC by means of first and second operating bodies 3 and 4 arranged on both sides of the door D. make it work.

Door D separates the inside and outside of the building into two spaces R.
A wall opening provided with a wall W dividing the space R1 and R2 is opened and closed, and the door D is formed, for example, as a single-panel door that opens toward the space R1.

The first and second operating bodies 3 and 4 are handles that protrude from the lock body 1a and are rotatably attached to both sides of the door D, and the lock body 1a has, as illustrated in FIG.
A lock rod 11 biased forward by a spring 10 is arranged inside the case 9. In addition, the lock rod 11 has a fully protruding position A where the contact piece 12 formed from the tip abuts the front 13, and the lock rod 11 is pulled toward the front 13 side and almost retracted into the front 13. It is housed so that it can appear and retract between the opening position B where the door D can be opened. Moreover, the lock rod 11 has, on its upper surface,
An engagement piece 15 having a cutout groove 14 recessed in its upper end face is raised.

As mentioned above, the locking rod 11 is urged forward by the spring 10, and the pins 19a and 20a facing each other at the ends of the first and second levers 19 and 20 are connected to the engagement piece 1.
5 can be retracted, thereby allowing the lock 11 to move in and out.

The first and second levers 19 and 20 are connected to first and second operating bodies 3 and 4 that are supported concentrically on the case 9.
It extends from the boss parts 22 and 23 of. Further, in a free state in which the handles 3a and 4a extending from the boss portions 22 and 23 are horizontal and the lock rod 11 is located at the fully extended position A, the first and second levers 1
9 and 20 are inclined in the direction before the locking rod 11 protrudes, and the pins 19a and 20a are positioned in front of the engagement piece 15 with a slight distance therebetween. Furthermore, space R
The pin 19a of the first operating body 3 located on the 1 side
extends to a position beyond the notch groove 14.

Further, a hanging piece 29 is attached to the lock body 1a, which is pivotally supported by a bearing piece 27 that hangs down from the upper surface of the case 9, and which engages with the notch groove 14. The hanging piece 29 has a stepped portion 31 formed at its rear portion, is pressed downward by a spring 32, and is fitted into the notched groove 14. Therefore, when the engaging piece 15 moves backward, the front surface of the engaging piece 15 can be locked by the stepped portion 31. Thereby, the lock rod 11 can be held at a half-extended position C between the fully-extended position A and the door-opening position B. Note that, as described above, since the pin 19a extends beyond the notch groove 14, the stepped portion 31 is
In the backward movement state of the lock rod 11 that engages with the engaging piece 15, the upper surface of the pin 19a touches the lower surface of the hanging piece 29,
Push up above the notch groove 14. Therefore, the first
By operating the operating body 3, the engagement between the hook piece 29 and the engagement piece 15 is prevented, and even when the two are engaged, the engagement can be released.

The blocking portion 2a is formed on the closing side of the door D at the protruding portion 2 where the lock rod 11 protrudes from the door D at the fully protruding position A.

The blocking portion 2a abuts against the receiving plate 1b of the wall W toward which the free end faces by extending in the longitudinal direction of the lock rod 11,
It consists of a flat surface that prevents the door D from closing, and both side surfaces of the protruding portion 2 are formed in parallel. Therefore, the protruding portion 2 protrudes from the door D by releasing the operating bodies 3 and 4 after the door is opened. Therefore, in the protruding state, the blocking portion 2a abuts against the receiving plate 1b when closing, and can prevent closing. Further, a buffer material 8 is provided on the blocking portion 2a to buffer the collision and prevent damage even when the door D is accidentally closed too strongly. The impact material 8 is a thin plate made of rubber material, and as shown in FIG. 6a, the blocking portion 2a is
It is fitted into a shallow groove 2c provided in the groove 2c, protrudes from the blocking portion 2a, and is attached using an adhesive. In addition, Fig. 6a shows that when the door D is double-sided, the lock rod 1
Although the case where both side surfaces of the protruding portion 2 of No. 1 are used as the blocking portions 2a is shown, when the single swing door of this embodiment is used, the sixth
As shown in FIGS. b and c, the cushioning material 8 is provided only on the blocking portion 2a on the closing side.

Further, the cushioning material 8 can be attached by being divided into upper and lower sections as shown in FIG. 6b, or can be attached with a cushion 8a interposed therebetween (as shown in FIG. 6c).

A vertical frame member F is arranged on the wall W toward which the free end of the door D faces, and the receiving plate 1b into which the lock rod 11 is fitted is attached to the vertical frame member F. The receiving plate 1b is provided with a locking hole 42 into which the protruding portion 2 of the lock rod 11 can be inserted. The locking hole 42 is a hole 3 recessed in the vertical frame material F.
6, and the switch S made of, for example, a micro switch is housed in the hole 36 with its operating end 37 facing outward. The switch S uses a normally closed type switch that turns off when pressed. In addition, as shown in Fig. 3, a manual switch M is connected to the relay R of the electric circuit EC that connects the electric appliances E such as the lighting L, the ventilation fan F, and the heater H.
connected in series with Therefore, when the lock lever 11 leaves the operating end 37, the relay R
The electric appliance E connected to the a contact (make contact) Ra can be energized. Note that the electric circuit EC can also be directly driven by the switch S without using the relay R.

Operation When there is no occupant in the space R2 and the door is closed, the operating end 37 of the switch S is pressed by the lock 11 protruding to the fully protruding position A, and the switch S is turned OFF.
condition, electrical circuit EC is open, electrical appliance E is
It's off. Next, when entering space R2 from space R1, push down the handle 3a of the first operating body 3, and use the pin 19a of the first lever 19 to lock the locking piece 15 as shown in FIG. Rod 11
is moved back to its opening position B, and door D can be opened. As the lock lever 11 moves back, the switch S is turned on. As described above, the first operating body 3 does not engage the latch piece 29 and the engagement piece 15, and therefore the first operating body 3 can freely move the lock rod 11 forward and backward.

After opening the door D, enter the lit space R2, release the first operating body 3, and enter the space R2.
After grasping the second operating body 4 located on the side, that is, on the side through which the door D has passed, the door D is closed using the handle 4a. As described above, in the free state, the lock rod 11 protrudes to the fully extended position A and has the blocking portion 2a, so when closing, it is necessary to operate the second operating body 4 linked to the lock rod 11.
Therefore, by operating the handle, the lock rod 11 is moved back to the open/close state B, thereby enabling the closing operation.
At this time, the engagement piece 15 is pressed by the pin 20a and retreats together with the lock rod 11, and when the second operating body 4 is returned to close the door, the step portion 31 of the hook piece 29 engages with the engagement piece 15 ( 5) and hold the lock rod 11 in the semi-extruded position C. In this state, the operating end 37 of the switch S is separated from the lock rod 11, so that the switch S maintains the electrical circuit EC in a closed state. Note that even if the second operating body 4 is repeatedly operated, the hook 29 always locks the engagement piece 15, so the half-extruded position C is maintained until the first operating body 3 is operated when leaving the room. be done. By operating the first operating body 3 when leaving the room,
As described above, the pin 19a pushes up the hook 29 and releases the engagement with the engagement piece 15, and as the user exits the room, the lock lever 11 protrudes, pushing out the switch S and opening the electric circuit EC.

[Effect of idea]

As mentioned above, the door lock of the present invention has a cushioning material protruding from the side of the closing side of the protruding part of the lock rod, so that it can be cushioned even when the door is closed in the protruding state, and the damage can be prevented. It can be suitably used as a door lock, especially for switching operations.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a perspective view illustrating the inside of the lock body, FIG. 3 is a circuit diagram illustrating the electric circuit, FIGS. 4-5 are line diagrams showing its operation, and FIGS. FIG. 1a...Lock body, 1b...Socket plate, 2...Protruding portion, 2a...Blocking portion, 8...Buffer material, 11...Lock rod 11, D...Door, S...Switch.

Claims (1)

[Scope of utility model registration request] A door lock in which a cushioning material is provided on the closing side of the protruding part of the lock lever that protrudes from the door.