JPH0740056Y2 - Locking device for sliding doors - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device for a sliding door, which locks a phase-overlapping end of a pair of sliding doors that open and close an opening.

2. Description of the Related Art As a conventional locking device for a sliding door, a screw type locking device is most commonly used, and the screw type locking device has the following structure. That is,
A pair of tracks are installed side by side in the opening, and the tracks are
A front sliding door and a rear sliding door are mounted slidably so that the opening is opened and closed, and when fully closed, adjacent ends overlap. A screw hole is provided at the end of the rear sliding door, while a through hole is formed at the end of the front sliding door, and a long thumbscrew is attached. Then, at the time of fully closing, a thumbscrew is inserted into the through hole, and thereafter, the thumbscrew is rotated to engage with the screw hole to lock both sliding doors in the fully closed state. is there.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in such a conventional locking device, an operation of inserting the thumbscrew into the through hole and an operation of rotating the thumbscrew after the insertion are required. Since the work becomes complicated and it is impossible to lock the door quickly, and when the sliding door is released, the thumbscrew must be reversely rotated to be unscrewed, and then the pulling operation must be performed. Unlocking was also impossible. The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a sliding door lock device that can be locked and unlocked easily and reliably by one-touch operation. It is a thing.

Means for Solving the Problems In order to solve the above problems, in the present invention, a front sliding door for opening and closing the opening and a rear sliding door are respectively provided on a pair of tracks arranged in parallel in the opening. In a structure in which the ends of the sliding doors that are slidably mounted and that undergo phase superposition when fully closed are locked via a locking device, a receiving portion is provided at the end of the rear sliding door while the front sliding door is provided. A lock housing having vertical surfaces extending in the up-and-down direction and facing each other on both sides and having front and rear surfaces open, and a pivotal projection provided on the vertical surface. On the side facing the opening of the lock housing, a slanted guide surface extending from the peripheral portion of the base end toward the center of the tip is formed.
A through hole is provided on the side surface of the operation piece that can be housed in the lock housing, and the pivotal projection is fitted into the through hole to move the operation piece into the lock position where the operation piece enters the receiving portion and the outside of the receiving portion. The operation piece is rotatably pivoted to an unlocking position to be withdrawn, and a lower protrusion that is pressed against the vertical surface at the lock position and a vertical projection at the unlocking position is provided on a side surface of the operation piece. The upper protrusion to be pressed is formed.

Operation In the above configuration, when the operation piece is assembled to the lock housing, the operation piece is inserted into the lock housing from the side where the guide surface of the pivotal projection faces and then pressed. Then, since the guide surface is provided on the pivotal protrusion, the side surface of the operation piece slides while being pressed against the guide surface.
Then, when the pivotal protrusion and the through hole are aligned with each other, the pivotal protrusion enters into the through hole, whereby the assembling of the operation piece is completed.

Further, when locking the sliding doors, if the front sliding door and the rear sliding door are fully closed, the ends of both sliding doors will overlap. Therefore, in this state, when the operation piece provided in the lock housing of the front sliding door is rotated to the lock position, the operation piece enters the receiving portion provided in the rear sliding door, and both the sliding doors are received. By the operation piece that has entered the section,
They are prevented from sliding in the opening direction and are locked. At this time, the lower protrusion provided on the side surface of the operation piece is pressed against the vertical surface of the lock housing, so that the operation piece is restrained at the lock position.

Then, when unlocking the sliding door when unlocking, when the operation piece is rotated to the unlocked position, the operation piece retreats out of the receiving portion, whereby both the sliding doors are unlocked. Thus, sliding is possible without being blocked by the operation piece. At this time, the upper projection provided on the side surface of the operation piece is pressed against the vertical surface of the lock housing, so that the operation piece is restrained at the unlock position.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. That is, the indoor kennel 1 shown in FIGS. 2 and 3 is a synthetic resin box having a bottom wall 2, left and right side walls 3, 4, a rear wall 5 and an upper wall 6, and has an opening on the front side. A section 7 is provided. The rear wall 5 is provided with a plurality of ventilation holes 8 ... And the upper wall 6 is provided with a handle 9. The opening 7 is formed with a pair of tracks 10 and 11 extending in parallel along opposite ends of the bottom wall 2 and the top wall 6, respectively. The front sliding door 12 is slidably mounted, and the track 11 located on the indoor I side is slidably mounted with the rear sliding door 13.

The sliding doors 12 and 13 are in a lattice shape in which a plurality of vertical ribs 14 and horizontal ribs 15 are cross-coupled, and in a fully closed state shown in FIGS. Have dimensions. At the overlapping end of the front sliding door 12, as shown in an exploded view in FIG. 1, a lock housing having a double-sided opening is formed along a space defined by the vertical ribs 14 and the horizontal ribs 15.
16 are provided.

The lock housing 16 is open on both front and rear sides of the outdoor O side and the indoor I side, and has vertical surfaces 17, 17 facing each other. The vertical surfaces 17, 17 are provided with a pivotal projection 18 at a substantially central portion in the vertical direction. As shown in FIG. 4, the pivotal protrusion 18 is provided with a guide surface 19 on the indoor I side, and the guide surface 19 extends from the peripheral portion of the base end toward the center of the tip as shown. It is a slanting shape. A short recess 20 formed by cutting the vertical surface 17 from the indoor I side is provided at the upper part of the pivotal projection 18, and the vertical surface 17 is similarly formed at the lower part of the pivotal projection 18. Is formed by cutting out from the indoor I side, and is provided with a long recess 21 that is longer than the short recess 20 in the horizontal direction.

On the other hand, the operating piece 22 has a size that can be accommodated in the lock housing 16, and has a rectangular portion 23 at the upper portion and a wedge-shaped portion 24 at the lower portion.
Are integrally formed, and spherical operation portions 23a, 24a are provided on the surfaces of the rectangular portion 23 and the wedge-shaped portion 24. A through hole 28 is provided in the central portion on both side surfaces 25 of the operation piece 22, and upper projections are provided at upper and lower portions of the through hole 28.
26 and a lower protrusion 27 are provided. Both protrusions 26, 27
Has a hemispherical shape and is formed at a position corresponding to both the recesses 20 and 21.

The operation piece 22 is a lock housing from the indoor I side.
It is press-fitted into 16 and the pivotal projection 18 is fitted in the through hole 28, so that it is rotatably supported between the pivotal projections 18.

On the other hand, there are double sliding doors at the overlapping end of the rear sliding door 13.
A receiving portion 29 is provided at a portion facing the lock housing 16 in a state in which 12, 13 are fully closed. The receiving portion 29 has a pair of horizontal frames 30 and 30 and vertical frames 31 and 31 formed integrally with the vertical ribs 14 and the horizontal ribs 15, and has an opening on the outside O side and an indoor side I. A rear surface 32 is integrally formed on the side.

In the present embodiment having the above configuration, the double sliding doors 12, 13
When the front sliding door 12 and the rear sliding door 13 are fully closed when locking the doors, the ends of the sliding doors 12 and 13 are overlapped with each other, and as a result, as shown in FIG.
The receiving part 29 is polymerized on the side of the room I of 16. Therefore, in this state, when the square portion 23 of the operation piece 22 provided on the front sliding door 13 is pressed from the outdoor O side, the operation piece 22 is rotated to the lock position L as shown in FIG. Upon movement, the rectangular section 23 penetrates into the receiving section 29 and abuts on the rear wall 32.

Therefore, even if the sliding doors 12 and 13 are to be slid in the opening direction along the tracks 10 and 11, the side surface of the square portion is the receiving portion 29.
By making pressure contact with the vertical frame 31, a locked state in which sliding is prevented is secured, and the lock can be performed by a one-touch operation of pressing the square portion 23.

At this time, since the lower protrusion 27 is located on the vertical surface 17 beyond the elongated concave portion 21, the lower protrusion 27 is located on the vertical surface 17.
The operation piece 22 is constrained to the lock position L by being pressed against and receiving a reaction force from the vertical surface 17. Therefore,
The animals housed in the indoor kennel 1 have sliding doors 12,13
Even if the operation piece 22 collides with, the operating piece 22 does not rotate from the lock position L, and the both sliding doors 12 and 13 can be reliably maintained in the locked state.

When unlocking the sliding door, the wedge-shaped portion 24 of the operation piece 22 is pressed from the outdoor O side. Then, the operation piece 22 rotates to the unlock position U as shown in FIG. 5 (A), and the rectangular portion 23 that has entered the receiving portion 29 exits from the receiving portion 29. Therefore,
Both sliding doors 12 and 13 are unlocked by a one-touch operation of pressing the wedge-shaped portion 24, and are slidable along the tracks 10 and 11, respectively. For example, as shown in FIG. By sliding along 12, the opening 7 of the indoor kennel 1 can be opened.

At this time, since the upper protrusion 26 is located on the vertical surface 17 beyond the short recess 20, the upper protrusion 26 is
The operation piece 22 is restrained in the unlock position U by being pressed against the vertical surface 17 and receiving a reaction force from the vertical surface 17. Therefore, the operation piece 22 is rotated to the lock position L due to the vibration or the like when the sliding door 12 is slid, and the rectangular portion 23 is rotated.
Does not interfere with the vertical ribs 14 of the rear sliding door 13, and the front sliding door 12 can be reliably slid.

When assembling the operation piece 22 to the lock housing 16, as shown in the exploded view of FIG. 1, the operation piece 22 is inserted into the lock housing 16 from the indoor I side and then pressed. Then, since the pivotal projection 18 is provided with the oblique guide surface 19, the side surface 25 of the operation piece 22 slides while being in pressure contact with the guide surface 19. Then, the pivotal protrusion 18
Since the pivotal projection 18 enters into the through hole 28 when the through hole 28 and the through hole 28 coincide with each other, the operation piece 22 can be easily assembled.

As described above, according to the present invention, the receiving portion is provided at the end portion of the rear sliding door, which is slidably mounted on the pair of tracks, while the receiving portion is provided at the end portion of the front sliding door. The rotatable operation piece is pivotally supported at a lock position that enters the receiving portion and an unlock position that exits the receiving portion. Therefore,
Locking and unlocking can be performed by a one-touch operation of rotating the operation piece, and the locking and unlocking operations can be performed easily and quickly. On the side surface of the operation piece, since the lower projection and the upper projection, which are in pressure contact with the vertical surface of the lock housing at the lock position and the unlock position, respectively, are provided, the operation piece suddenly moves from the locked position due to shock or vibration. There is no need to rotate the unlock position or rotate from the unlock position to the lock position, and both sliding doors can be reliably maintained in the locked state and the unlocked state.

Further, in this way, a lower projection and an upper projection are provided on the side surface of the operation piece, and the projection is pressed against the vertical surface of the lock housing, so that the operation piece is constrained to the lock position and the unlock position. Is configured to pivotally support the operation piece by means of a pivotal protrusion provided on the vertical surface. Therefore, there is no need for a separate member for restraining the operating piece such as a spring at each position of locking and unlocking, and a separate member for pivotally supporting the operating piece such as a pin, and the operation can be performed with a small number of parts and assembling man-hours. The piece can be configured to be restrained in the locked position and the unlocked position. Further, since the guide surface is provided on the pivotal protrusion, the assembling work when assembling the operation piece with the lock housing becomes easy, and the work efficiency at the time of assembling can be improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an essential part showing an embodiment of the present invention, FIG. 2 is an overall front view of the same embodiment, and FIG. 3 is FIG.
A sectional view taken along the line, FIG. 4 is an enlarged sectional view taken along the line IV-IV of FIG. 1, and FIG. 5 (A) is an enlarged view of part C in FIG. ) Is an enlarged view of part C in FIG. 3 showing a locked state, and FIG. 6 is a front view showing a state in which the front sliding door is released. 1 …… Indoor doghouse, 10,11 …… Track, 16 …… Lock housing, 18 …… Pivot projection, 19 …… Guide surface, 22 …… Operating piece, 23 …… Square section, 24 …… Wedge shape Part, 26 ... upper protrusion,
27 …… Lower protrusion, 29 …… Receptor, 30 …… Horizontal frame, 31 …… Vertical frame, 32 …… Rear surface.

Claims (1)

[Scope of utility model registration request] 1. A front sliding door and a rear sliding door for opening and closing the opening are slidably mounted on a pair of tracks arranged in parallel in the opening, and both of which are phase-polymerized when fully closed. In a structure in which the end portion of the sliding door is locked via a locking device, a receiving portion is provided at the end portion of the rear sliding door, and a vertical portion extending vertically and facing each other at the end portion of the front sliding door. A lock housing having faces on both sides and having front and rear surfaces open is provided, and a pivotal projection is provided on the vertical surface, and the pivotal projection has a side portion facing the opening of the lock housing.
A slanted guide surface is formed from the peripheral portion of the base end toward the center of the distal end, while a through hole is provided in the side surface of the operation piece that can be housed in the lock housing, and the pivot support projection is provided in the through hole. Is fitted inside, and the operation piece is rotatably supported at a lock position that enters the inside of the receiving portion and an unlock position that exits outside the receiving portion, and on the side surface of the operation piece,
Furthermore, a lower door projection that presses against the vertical surface at the lock position and an upper projection that presses against the vertical surface at the unlock position are molded.