JPS6349475Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a door lock.

Conventionally, this type of door lock was manufactured by Utility Model Publication No. 38-9797.
As shown in the publication, a sliding body is provided to be movable up and down along the pedestal, a pusher is provided on the slider to be movable left and right, and one end of a handle pivoted to the pedestal so as to be movable up and down is the pusher. The handle is pivotally mounted, and by rotating the handle up and down, the pusher can be moved left and right while the slider can be moved up and down, and the pusher is biased and held toward one side by a leaf spring. A door has been proposed in which the handle can be held in either the upper or lower position, and the door can be locked or unlocked using a stopper provided on the sliding body.

However, with this structure, both ends of the leaf spring are fixed to the sliding body with screws, so the leaf spring deforms elastically with the fixed parts at both ends as the boundary, so long-term use causes repeated loads to be applied to the fixed parts at both ends. (load)
This has the problem of being damaged due to concentrated action.

In other words, there is a problem that the durability of the leaf spring is poor.

The present invention was developed in view of the above circumstances, and its purpose is to provide a door lock that can be locked and unlocked by moving the stopper by rotating the handle, as well as improving the durability of the leaf spring. It is to be.

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 is a plan view, Fig. 2 is a sectional view taken along the - line in Fig. 1, Fig. 3 is a back view, and Fig. 4 is a top view of Fig. 1. A narrow opening 2 penetrating through 1a and the back surface 1b is formed in the longitudinal direction, and narrow grooves 3, 3 are formed in the front surface 1a continuous with both ends of the opening 2. At the same time, concave portions 4, 4, which serve as concave portions for gripping, are formed continuously with the ends of each concave groove 3.

The bottom wall 3a of the groove 3 is a slope inclined downward toward the opening 2, and the bottom wall 4a of the recess 4 is spherical.

A pair of brackets 5, 5 in the width direction are integrally formed on both sides in the longitudinal direction of the back surface 1b of the pedestal 1, and a pin 6 is connected horizontally between each pair of brackets 5, 5.
A pair of projecting pieces 7, 7 are integrally formed on both sides of b in the width direction.

Reference numeral 8 denotes a handle, and the handle 8 has a slightly narrower width than the opening 2 and has an elongated rectangular shape that gradually becomes thinner from one end to the other end, and the handle 8 has a width that is slightly narrower than the opening 2. At the intermediate part, it is pivotally connected to the base 1 by a pin 9 so as to be slidable up and down, and one end of the handle 8 projects from the opening 2 toward the back surface 1b of the base 1, and a pusher 10 is connected to the base 1 by a pin 11 so as to be slidable up and down. At the same time, a substantially semicircular knob 12 is formed at the other end of the handle 8, and the knob 12 is adapted to be sunk into the recessed portion 4.

Reference numeral 13 denotes a sliding body that can freely slide in the longitudinal direction along a pair of protrusions 7, 7 formed on the back surface 1b of the base 1, and both sides of the sliding body 13 in the longitudinal direction are connected to the pair of pins 6, 6. It is slidably inserted between it and the back surface 1b of the pedestal, and a locking rod 14 is pivotally connected to one end.

A concave groove 15 for attaching a leaf spring is formed in the longitudinal center of the sliding body 13, and the bottom wall 1 of the concave groove 15
5a has a spherical shape, and a wide recess 16 into which the pusher 10 fits is formed in the longitudinal center of the recessed groove of the sliding body 13.

In other words, the longitudinal middle portions of both side walls 13a, 13a of the sliding body 13 protrude outward in a U-shape and are bent 1.
7, 17, and a pair of protrusions 18, 18 are integrally formed at positions facing both longitudinal ends 17a, 17a of each of the bent portions 17, 17, respectively.

Reference numeral 19 denotes a leaf spring, which is attached to the bottom wall 15 of the groove 15.
The base piece 19a is curved along the shape of the base piece 19a, and the pair of bent pieces 19b, 19b, which are continuous with both ends of the base piece and bent inward, form an elongated C-shape, and the pair of bent pieces 19b , 19b, opposite ends 19'b, 1
9'b are separated by a gap _S1 .

The pusher 10 has a bent piece 19b of the leaf spring 19,
A recessed portion 20 that fits between the ends of 19b is formed.

Thus, the pusher 10 is fitted into the sliding body 13 in the recessed part 16 so as to be able to move in and out from the left and right, and the recessed part 20 is fitted across the opposing ends of the pair of leaf spring bent pieces 19b, 19b. Since there is a leaf spring 19
is constantly pushed toward the surface 1a side of the pedestal 1.

When the handle 8 is rotated downward around the pin 9 by holding the knob 12 from the illustrated state, the pusher 10 moves along the inside of the concave portion 16 and against the leaf spring 19 on the back surface 1b.
Since the slide body 13 rotates upward about the pin 9 while being moved to the side, the slide body 13 slides upward.

When the handle 8 intersects perpendicularly to the base 1, the pins 9 and 11 are at the same position in the left and right direction, and the pusher 1
0 is the stroke end on the back side 1b side and leaf spring 1
9 is deflected to the maximum extent, and when the handle 8 is further rotated downward, the restoring force of the leaf spring 19 pushes the pusher 10 toward the surface 1a along the concave portion 16, and the operating force of the handle 8 is gradually reduced. The bottom wall 3a of one groove 3
Rotate until it touches the.

As a result, the sliding body 13 is moved upward, and the stopper rod 14 comes out of the hole formed on the fixed side (not shown) to be in the released state.

In addition, when performing a locking operation, the operation may be performed in the opposite manner to that described above.

In addition, the leaf spring 19 is fitted into the groove 15 of the sliding body 13, and the whole part is elastically deformed when the pusher 10 moves from side to side. 19 durability can be improved.

In addition, the pusher 10 is fitted across the pair of bent ends of the leaf spring 19, and the leaf spring 19 is deformed in a curved manner at both ends. can.

The present invention is as described above, and by rotating the handle 8 in the longitudinal direction, the pusher 10 moves in and out against the leaf spring 19, and the sliding body 13 equipped with the stopper rod 14 is moved along the base 1. You can lock and unlock it.

Further, the leaf spring 19 has a substantially elongated C-shape with a base piece 19a and a pair of bent pieces 19b, 19b, and is fitted and supported in a groove 15 formed in the sliding body 13. Since the pieces 19b, 19b are in contact with the pusher 10, the entire leaf spring 19 is elastically deformed when the pusher 10 moves in and out, and the load does not concentrate on one part, so it wears out quickly. leaf spring 1 without causing damage or damage.
9 durability can be improved.

Further, since the leaf spring 19 is fitted and supported in the groove 15 formed in the sliding body 13, the leaf spring 19
can be easily and easily attached to the sliding body 13, making assembly of the entire door lock simple and easy.
9 is difficult to come off from the concave groove 15, and the leaf spring 19 does not come off when the door is closed.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention.
The figure is a plan view, Figure 2 is a sectional view taken along the - line in Figure 1,
Figure 3 is a back view, Figure 4 is a top view of Figure 3, and Figure 5 is a top view of Figure 3.
The figure is a perspective view of a concave portion of the sliding body. 1 is a base, 8 is a handle, 10 is a pusher, 13 is a sliding body, 15 is a groove, and 19 is a leaf spring.

Claims (1)

[Scope of utility model registration request] The sliding body 13 is placed on the back side 1b of the pedestal 1.
The sliding body 13 is provided with a recessed groove 15 that is open toward the back surface 1b of the pedestal 1, and a pusher 10 is provided in the longitudinally intermediate portion of the recessed groove 15 on the pedestal. At the same time, a handle 8 is supported on the base 1 so as to be freely rotatable in the longitudinal direction, and one end of the handle 8 is pivotally connected to the pusher 10. A substantially long C-shaped plate spring 19 is formed by the piece 19a and a pair of bent pieces 19b, 19b which are continuous with both ends thereof and are bent inward, and this plate spring 19 is inserted into the groove 15.
It is characterized in that the base piece 19 contacts the bottom wall 15a and the pair of bent pieces 19b, 19b are fitted and supported in the pusher 10 so as to contact them, and the sliding body 13 is further provided with a locking rod 14. Door lock.