JP3473365B2 - Door seismic locking device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-seismic locking device for a cabinet door, and more particularly to a seismic anti-seismic door device for keeping the door closed during an earthquake to prevent the contents stored in the cabinet from falling and scattering. Regarding locking device.

[0002]

2. Description of the Related Art Conventionally, a seismic lock device for a door as shown in FIG. 4 has been proposed. The seismic lock device for this door is used in a cabinet having a rectangular body 5 and a door 6 hinged to the opening of the rectangular body 5, and is attached to the back surface of the door 6 and has an engaging portion 1a. It comprises an engaging member 1 provided and a latch member 2 pivotally attached to a fixing member 3 in a rectangular body 5 and swingable in the front-rear direction. An engaging portion 2a that engages with the engaging portion 1a of the engaging member 1 by rotating upward when the cabinet vibrates is provided at the end of the latch member 2 on the door 6 side.

The fixing member 3 is formed in a box shape having an opening on the door 6 side and is fixed to the back surface of the top plate 5a of the rectangular body 5. The latch member 2 includes a swing shaft 2b pivotally attached to the opening sides of the inner surfaces of both side plates 3b and 3b of the fixing member 3, and a bulging portion 2c protruding integrally with the swing shaft 2b to the inside of the fixing member 3. The swinging plate 2d integrally protrudes from the lower portion of the bulging portion 2c on the door 6 side to the door 6 side, and the locking portion 2a provided at the end of the swinging plate 2d on the door 6 side. . The door 6 side of the swing plate 2d projects from the opening of the fixing member 3 and can swing up and down. The engaging member 1 includes a vertical plate closely attached to the upper end of the back surface of the door 6, a horizontal plate standing on the upper end of the vertical plate, and an engaging portion 1a provided at the tip of the horizontal plate. Has been done. The engaging portion 1a is formed by bending a front end portion of a horizontal plate downward into a semi-cylindrical shape, and the inner surface of the engaging portion 1a is formed in a shape with which the locking portion 2a of the latch member 2 can be engaged. In addition, a notch 1e for accommodating the vicinity of the locking portion 2a of the swing plate 2d is provided at the center of the engaging portion 1a. Further, the rocking plate 2d is normally balanced by tilting the locking portion 2a side downward, so that when the cabinet vibrates, the locking portion 2a is inclined.
The a side rotates upward, and the locking portion 2a rises and is held at a predetermined engagement position at the height of the engagement portion 1a. Further, a pair of a magnet and an attraction member attracted to the magnet are provided on the handle-side rear surface of the door 6 and the opening end surface of the rectangular body 5 corresponding to this position. Further, the steel ball 10 is internally mounted in contact with the inner surface of the back plate of the fixing member 3 and the bulging portion 2c inside the fixing member 3.

In such a door seismic lock device, as shown in FIG.
In the normal state, the attraction member is attracted by the magnet to hold the door 6 in the closed state, as shown in FIG. At this time, the engaging portion 2a is located at the position A1, and the engaging portion 1a is located at the position B1. The door 6 is opened by pulling the handle against the attractive force of the magnet. At this time, the engagement portion 1a of the engagement member 1 moves outward above the engagement portion 2a of the latch member 2 in a substantially horizontal direction as the door 6 is opened. Door 6
When an earthquake occurs in the closed state, the steel ball 10 pushes the bulging portion 2c toward the door 6 side by the vibration of the cabinet, the swing plate 2d swings, and the locking portion 2a side swings upward. , The locking portion 2a rises by the distance X2 and is held at the position A2. Then, when the attracting member is separated from the magnet by the vibration of the earthquake and the door 6 is opened a little to open it, the engaging portion 1a moves in the substantially horizontal direction by a distance of Y2 and engages with the engaging portion 2a at the position of B2. The stop door 6 can be locked by blocking its opening. When the door 6 is unlocked, the door 6 is strongly pushed to disengage the engaging portion 1a from the engaging portion 2a, and the engaging portion 2a side of the swing plate 2d is rotated downward and held. .

In such a seismic lock device for a door, the door 6 is held in a slightly opened state in the event of an earthquake to prevent the contents stored in the cabinet from falling and scattering.

[0006]

However, in the above-mentioned conventional seismic lock device for a door, the rocking plate 2d is damaged by the vibration of an earthquake.
Swinging and opening of the door 6 occur at the same time, and the movement of the engaging portion 1a and the movement of the locking portion 2a occur at the same time.
In order for a and the engaging portion 2a to engage with each other, the engaging portion 2a needs to reach the predetermined engaging position earlier than at least the engaging portion 1a. Therefore, conventionally, the distance between the position of the engaging portion 1a and the locking position in the closed state of the door 6 is increased to delay the moving time of the engaging portion 1a to the locking position. . However, in this case, since the fixing member 3 is located at the back of the engaging portion 1a, the locking plate 2d side of the swing plate 2d becomes long, and the horizontal plate becomes long, so that the latch member 2 and the engaging member 1 are formed. Will become bigger. Further, since the moving distance of the engaging portion 1a to the locking position becomes long, positional accuracy is required to accurately reach the engaging position of the engaging portion 1a,
Attachment work of the latch member 2 and the engaging member 1 becomes troublesome.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a seismic lock device for a door which is small in size, has improved locking accuracy in the event of an earthquake, and is easy to install and install. is there.

[0008]

In order to achieve the above object, the invention according to claim 1 provides a cabinet 7 having a rectangular body 5 and a door 6 hinged to the opening of the rectangular body 5. A seismic lock device for a door, which is attached to the back surface of the door 6 and pivotally attached to an engaging member 1 having an engaging portion 1a and a fixing member 3 in a rectangular parallelepiped 5 so as to be swingable in the front-rear direction. A door formed of a latch member 2 and provided at the end of the latch member 2 on the side of the door 6 that has a locking portion 2a that rotates upward when the cabinet 7 vibrates and locks with the engaging portion 1a of the engaging member 1. In the seismic resistant lock device, the mounting member 4 is attached to the back surface of the door 6, and the engaging member 1 is pivotally attached to the attaching member 4 so as to be swingable in the front-rear direction. Ri Na provided an engaging portion 1a to 5 end, the latch member 2, and vibration of the cabinet 7
The engaging member 1 swings, respectively, and the engaging portion 2a and the engaging portion 1
It is characterized in that a and a come close to each other and are engaged with each other.

In such a seismic lock device for a door, the door 6
If an earthquake occurs when the
The swinging of the latch member 2 causes the latching portion 2a at the end of the latch member 2 on the door 6 side to rotate upward and rise. Also, when the door 6 is opened a little due to the vibration of the earthquake,
The engaging member 1 pivotally attached to the mounting member 4 on the rear surface of the door 6 swings, and the engaging portion 1a at the end of the engaging member 1 on the rectangular parallelepiped 5 side rotates downward, descends, and rises. By locking the locking portion 2a, the opening of the door 6 is blocked and locked.

According to a second aspect of the present invention, in the first aspect of the present invention, the center of gravity of the engaging member 1 is provided at a position where the engaging portion 1a rotates upward, and the engaging portion 1a due to gravity is provided. It is characterized in that it is provided with stopper means for preventing upward rotation.

In such a seismic lock device for a door, the door 6
In the closed state, the engaging portion 1a is rotated upward by gravity and held by the stopper means so that the engaging portion 1a and the engaging portion 2a do not engage with each other.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION A seismic lock device for a door according to an embodiment of the present invention will be described below with reference to FIGS.

1A and 1B show a seismic lock device for a door according to an embodiment of the present invention. FIG. 1A is a perspective view and FIG. 1B is a longitudinal sectional view. FIG. 2 is a perspective view showing a cabinet 7 having a seismic lock device for the door of the above.

As shown in FIGS. 1 and 2, the seismic lock device for this door is used for a cabinet 7 having a rectangular body 5 and a door 6 hinged to the opening of the rectangular body 5. .
Further, it is formed of an engaging member 1 attached to the back surface of the door 6 and provided with an engaging portion 1a, and a latch member 2 pivotally attached to a fixing member 3 in the rectangular parallelepiped 5 and swingable in the front-rear direction. At the end of the latch member 2 on the door 6 side, an engaging portion 2a that rotates upward when the cabinet 7 vibrates and engages with the engaging portion 1a of the engaging member 1 is provided. Further, the mounting member 4 is attached to the back surface of the door 6, and the engaging member 1 is pivotally attached to the mounting member 4 so as to be swingable in the front-rear direction, and at the end of the engaging member 1 on the rectangular body 5 side. The engaging portion 1a is provided.

The fixing member 3 is formed in a box shape having an opening on the side of the door 6, and a fixing portion 3a provided upright on the upper surface provides a lower surface of the top plate 5a near the opening of the rectangular body 5 and an upper surface of the upper plate 3c of the fixing member 3. It is fixed in the state of being in close contact with. The fixed portion 3a is formed in a rod shape having a screw portion on the outer circumference. Latch member 2
Is a swing shaft 2b pivotally attached to the opening sides of the inner surfaces of both side plates 3b and 3b of the fixing member 3, a bulging portion 2c projecting integrally with the swing shaft 2b to the inside of the fixing member 3, and the swelling portion 2c. An oscillating plate 2d that integrally projects from the lower portion of the exit portion 2c on the door 6 side to the door 6 side,
The rocking plate 2d is formed of a locking portion 2a provided at the end of the swinging plate 2d on the door 6 side. The locking portion 2a is formed in a substantially columnar shape that is substantially orthogonal to the swing plate 2d. The lower end of the oscillating plate 2d contacts the lower edge of the opening of the fixing member 3, and the center of gravity of the latch member 2 is held in a state in which it is positioned slightly on the door 6 side below vertically below the axial center of the oscillating shaft 2b. Has been done. The latch member 2 can rotate about the swing shaft 2b in a direction in which the locking portion 2a moves upward. Further, the steel ball 10 is internally mounted in contact with the inner surface of the back plate of the fixing member 3 and the bulging portion 2c inside the fixing member 3.

The mounting member 4 is formed in a box shape having an opening on the rectangular body 5 side, and a front plate 4a closely fixed to the back surface of the door 6 and the right and left end portions of the front plate 4a integrally project to the rectangular body 5 side. It is formed of both side plates 4b, 4b provided and an upper plate 4c integrally provided on the upper ends of the front plate 4a and the left and right side plates 4b, 4b. The front plate 4a is provided with screw holes 4d in the left and right portions for allowing screws to pass through and to be fixed to the back surface of the door 6. The engaging member 1 has a rotary shaft 1b having both ends pivotally attached to the inner surfaces of the left and right side plates 4b, 4b, a thick portion 1c formed thickly around the rotary shaft 1b, and a thick wall. The upper portion of the portion 1c on the rectangular body 5 side is provided with a thin portion 1d protruding toward the rectangular body 5 side. Engagement part 1
The a is formed by bending the front end of the thin portion 1d downward in a semi-cylindrical shape, and the inner surface of the engaging portion 1a is formed into a shape with which the locking portion 2a of the latch member 2 can be engaged. The upper end of the thin portion 1d comes into contact with the tip edge of the upper plate 4c of the mounting member 4 and the engaging member 1
The center of gravity of is located slightly on the door 6 side of the rotating shaft 1b in the thick portion 1c. The engagement member 1 can be rotated around the rotation shaft 1b in a direction in which the engagement portion 1a moves downward. In addition, a notch 1e for accommodating the vicinity of the locking portion 2a of the swing plate 2d is provided at the center of the engaging portion 1a.

Further, when the door 6 is closed, the engaging member 1a is located slightly above the locking member 2a on the side of the rectangular member 5, so that the fixing member 3 is provided.
And the mounting member 4 are disposed so as to face each other. Further, a pair of magnets 11 and attraction members 12 attracted to the magnets 11 are provided on the upper end of the center of the back surface of the door 6 and the end face of the opening of the rectangular body 5 corresponding to this position. And the mounting member 4
A handle for opening the door 6 by hand is provided on the surface of the door 6 in the vicinity.

In such a seismic lock device for a door as described above, first, a screw is passed through the screw hole 4d of the front plate 4a, and is fixed to the upper end of the rear side of the door 6 on the rotating side by attaching the mounting member 4. . Then, the thick portion 1c of the engagement member 1 is inserted into the inside of the opening of the mounting member 4, and both ends of the rotary shaft 1b are pivotally attached to both inner surfaces of both side plates 4b, 4b of the mounting member 4. Further, the fixing portion 3a of the fixing member 3 is fixed to the top plate 5a of the rectangular body 5 so that the engaging portion 1a is located slightly above the locking portion 2a on the rectangular body 5 side.
Drive it to the bottom and fix it.

Next, the operation of the seismic lock device for the door will be described with reference to FIG. FIG. 3 is an explanatory view showing a locking method in the seismic lock device for a door of the above. In the figure,
Reference characters A1 and B1 respectively denote the latch member 2 and the engaging member 1 when the door 6 is normally closed. A2 and B2 indicate the latch member 2 and the engaging member 1 when an earthquake occurs.

As shown in FIG. 3, in the normal state, the attracting member 12 is attracted to the magnet 11 to hold the door 6 in the closed state. At this time, the engaging portion 2a is located at the position A1, and the engaging portion 1a is located at the position B1. When the door 6 is opened, the handle is pulled against the attractive force of the magnet 11. At this time, the engagement portion 1a of the engagement member 1 moves outward above the engagement portion 2a of the latch member 2 in a substantially horizontal direction as the door 6 is opened. When an earthquake occurs while the door 6 is closed, in the latch member 2, the vibration of the cabinet 7 causes the steel ball 10 to push the bulging portion 2c toward the door 6 and the rocking plate 2d rocks. The stop portion 2a side is rotated upward, and the locking portion 2a is raised by the distance X1 and held at the position A2. Further, in the engaging member 1, when the attracting member 12 is separated from the magnet 11 due to the vibration of the earthquake and the door 6 is slightly opened to open, the engaging member 1 has the engaging portion 1a side around the rotating shaft 1b. Is rotated downward, and the engaging portion 1a is locked by the locking portion 2a that descends by the distance Y1 and ascends at the position B2, so that the door 6 can be prevented from opening and locked. When the lock of the door 6 is released, the door 6 is strongly pushed to disengage the engaging portion 1a from the locking portion 2a,
The locking portion 2a side of the oscillating plate 2d is rotated downward and held.

In such a seismic lock device for a door, the door 6 is kept closed during an earthquake to prevent the contents stored in the cabinet 7 from falling and scattering. Further, since the engaging portion 2a and the engaging portion 1a approach each other and engage with each other, the engaging portion 2a
It is possible to reduce the moving distances X1 and Y1 of a and the engaging portion 1a. Therefore, the length of the oscillating plate 2d can be shortened, and the latch member 2 can be downsized. Furthermore, since the time until the engagement portion 2a and the engagement portion 1a are engaged can be shortened, the engagement portion 2a and the engagement portion 1a can be arranged close to each other when the door 6 is closed. Therefore, the positional relationship between the engaging portion 2a and the engaging portion 1a, that is, the set width of the fixing position of the mounting member 4 and the fixing member 3 is widened, and the mounting and fixing of the mounting member 4 and the fixing member 3 are facilitated. .

Further, the center of gravity of the engaging member 1 is provided at a position where the engaging portion 1a is rotated upward, and the upper end of the thin portion 1d abuts on the tip edge of the upper plate 4c of the mounting member 4 so that the engaging member 1a is engaged by gravity. Since the stopper means for preventing the joint portion 1a from rotating upward is formed, when the door 6 is in the closed state, the engaging portion 1a rotates upward due to gravity and is held by the stopper means to engage. The engaging portion 1a and the engaging portion 2a are prevented from engaging with each other, and when the engaging portion 1a is disengaged from the engaging portion 2a by unlocking the seismic lock device, the engaging portion 1a naturally causes the engaging portion 1a to move. It rotates upward and is held in the normal position by the stopper means.

[0023]

According to the first aspect of the present invention, when an earthquake occurs when the door is closed, the vibration of the cabinet causes the latch member and the engaging member to swing, so that the engaging portion and the engaging member are separated from each other. Engagement to prevent the door from opening and locking to prevent the contents stored in the cabinet from falling and scattering, and because the locking portion and the engaging portion approach each other and engage with each other,
It is possible to reduce the moving distance of each of the locking portion and the engaging portion. Therefore, the length of the oscillating plate can be shortened, and the latch member can be downsized. Further, since the time until the locking portion and the engaging portion are engaged can be shortened, the locking portion and the engaging portion in the door closed state can be arranged close to each other. Therefore, the positional relationship between the locking portion and the engaging portion, that is, the setting width of the fixed position of the mounting member and the fixing member is widened, the locking accuracy is improved, and the mounting work is simplified.

According to the second aspect of the invention, when the door is in the closed state, gravity causes the engaging portion to rotate upward and is held by the stopper means so that the engaging portion and the engaging portion do not engage with each other. Therefore, the engaging portion can be easily held in the normal position.

[Brief description of drawings]

FIG. 1 shows a seismic lock device for a door according to an embodiment of the present invention, (a) is a perspective view, and (b) is a longitudinal sectional view.

FIG. 2 is a perspective view showing a cabinet having a seismic lock device for the above door.

FIG. 3 is an explanatory diagram showing a locking method in the seismic lock device for a door of the above.

4A and 4B show a conventional seismic lock device for a door, in which FIG. 4A is a perspective view and FIG. 4B is a vertical sectional view.

FIG. 5 is an explanatory view showing a locking method in the seismic lock device for a door of the above.

[Explanation of symbols]

1 Engagement member 1a Engagement part 1b Rotation axis 1c thick part 1d thin part 1e Notch 2 Latch member 2a Locking part 2b swing axis 2c bulge 2d swing plate 3 fixing members 3a Fixed part 3b Both side plates 3c Upper plate 4 mounting members 4a front plate 4b Both side plates 4c Upper plate 4d screw hole 5 Rectangle 5a Top plate 6 doors 7 cabinets 10 steel balls 11 magnets 12 Adsorption member

Claims (2)

(57) [Claims] 1. A seismic lock device for a door in a cabinet having a rectangular body and a door hinged to an opening of the rectangular body, the engaging member being attached to a back surface of the door and having an engaging portion. And a latch member pivotally attached to a fixed member in the rectangular body and swingable in the front-rear direction, and a locking portion that rotates upward and locks with the engaging portion of the engaging member when the cabinet vibrates. In a seismic lock device for a door, which is provided at the end of the latch member on the door side, a mounting member is attached to the back surface of the door, and an engaging member is pivotally attached to the attaching member so that it can be swung back and forth. together, Ri Na provided an engaging portion in the rectangular side end portion of the engaging member, calibration
The vibration of the vignette causes the latch member and the engaging member to shake.
The engaging part and the engaging part move toward each other and engage with each other.
A seismic locking device for doors, characterized by the fact that it grows. 2. The center of gravity of the engaging member is provided at a position where the engaging portion rotates upward, and stopper means for preventing upward rotation of the engaging portion due to gravity is provided. A seismic lock device for a door according to claim 1.