JPH10238189A - Mechanism for locking door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix a door, etc., surely onto a ground surface and a floor without looseness by a simple structure. SOLUTION: The locking mechanism for the door has a drop bar 10 installed to a door, etc., for a building and a drop receiver 38, which is buried to the floor material of the building and a ground surface and into which the drop bar 10 is inserted. An inclined section 14 such as tapered conical shape, pyramidal shape, etc., is formed at the lower end section of the drop bar 10, and a movable member 18 formed of an elastic material is fitted slidably to the inclined section 14. An abutting section 26 abutted against the inclined section 14 is formed on the inside of the side end section of the movable member 18. When the drop bar 10 is inserted into the drop receiver 38, the movable member 10 is pushed up relatively to the inclined section 14 by the drop receiver 38, the abutting section 26 is pushed open by the inclined section 14, and the side face section 20 of the movable member 18 is brought into press-contact with the inner circumferential surface of the drop receiver 38.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock mechanism for locking a door or gate to the ground or floor when the door or gate is closed.

[0002]

2. Description of the Related Art Conventionally, with a door or a gate closed,
As a door lock mechanism to lock the door to the ground or floor,
A drop bar was attached to the bottom of the door. The drop bar is vertically slidably attached to the ground or floor, and a part of the drop bar is formed with a grip bar protruding laterally. The grip bar is an operation unit for sliding up and down. When the drop bar is not used, the grip bar is locked to a locked portion provided on the door to hold the drop bar so as not to drop.
A drop receiver having a concave portion is embedded in the ground or floor at a position facing the drop bar with the door closed. Then, the drop bar is lowered and inserted into the drop holder, the door is fixed to the ground or the floor by the drop bar, and the door is locked so as not to move from a predetermined position in a closed state.

[0003]

In the case of the above-mentioned prior art, the drop catcher is considerably wider than the drop catcher so that the drop stick can be inserted without any trouble even if dust or other foreign matter enters the drop catcher. Was made with For this reason,
There was rattling between the drop bar and the drop catcher, and the door was shaken or sounded by wind or the like.

The present invention has been made in view of the above-mentioned problems of the conventional technology, and is a door lock mechanism for securely fixing a door or the like to the ground or floor with a simple structure without rattling.

[0005]

SUMMARY OF THE INVENTION The present invention has a drop bar attached to a door of a building, and a drop bar which is embedded in the floor material or the ground of the building and into which the drop bar is inserted. The lower end of the drop bar is formed with an inclined portion such as a conical shape or a pyramid shape having a thin tip, and a movable member made of an elastic material is slidably fitted to the inclined portion. A contact portion that contacts the inclined portion is provided inside the side surface portion of the movable member. When the drop bar is inserted into the drop receiver, the movable member is pushed up relatively to the inclined portion by the drop receiver, and the abutment portion is pushed out to the inclined portion to expand the inner peripheral surface of the drop receiver. And a side wall portion of the movable member presses against the door.

The movable member is integrally formed of an elastic material, and is formed on a cylindrical side surface, a flange formed around the upper end surface of the side surface, and a lower end of the side surface. A bottom portion, which is the contact portion, a through hole formed in the center of the bottom portion and into which the inclined portion is fitted, and a slit is provided continuously from the through hole to the side surface portion.

[0007] Further, a hemispherical locking portion is provided at the tip of the inclined portion, a peripheral portion of the locking portion protrudes on the circumference of the inclined portion, and the bottom of the movable member is fixed to the locking portion. It is locked to the peripheral edge of the part to prevent falling off.

In the door lock mechanism of the present invention, the movable member comes into contact with the drop receiver and is pushed up, and the diameter of the inclined portion with which the contact portion comes into contact gradually increases, whereby the side portion of the movable member is expanded. The outer shape becomes thicker and is pressed against the inner peripheral surface of the drop catcher and locked.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 4 show a first embodiment of the present invention. The lock mechanism for a door of this embodiment has a columnar base 12 formed at the tip of a drop bar 10, which is thinner than the drop bar 10. At the tip of the base 12, a truncated cone-shaped inclined portion 14 is formed. The base portion 12 side of the inclined portion 14 is a large diameter portion 14a, and the tip side is a small diameter portion 14b. At the tip of the inclined portion 14, a hemispherical locking portion 1 having a diameter larger than the small diameter portion 14b and smaller than the large diameter portion 14a.
6 are formed.

A movable member 18 made of a synthetic resin having an appropriate elasticity is fitted to the inclined portion 14. Movable member 1
8 has a cylindrical side part 20 having a diameter slightly larger than the base part 12, and a flange part 22 is formed on the entire peripheral surface on the upper end surface of the side part 20. And flange part 2
A bottom portion 26 is formed at the end opposite to the bottom 2 as a contact portion of the inclined portion 14, and a through hole 28 is formed at the center of the bottom portion 26 so that the small diameter portion 14 b of the inclined portion 14 is fitted. I have. A slit 24 is formed in the side surface portion 20 from below the flange portion 22 to the through hole 28, and the slit 24 is
A total of three slits 24 are formed at substantially equal intervals in parallel with the central axis of Eighth.

Next, a method of assembling the door lock mechanism of this embodiment will be described. First, the tip of the drop bar 10
It is inserted into the movable member 18 from the flange portion 22 side, and the bottom portion 26 is pressed by the locking portion 16. Since the movable member 18 has elasticity, the through hole 28 in the bottom portion 16 is pushed out by the locking portion 16, passes through the locking portion 16, and is formed in the small diameter portion 14 b.
Are fitted and return to the original shape. The movable member 18 has a large diameter portion 14a.
Slidable in the direction shown in FIG.
Is expanded by the inclined portion 14, and the outer diameter of the side surface portion 20 increases.

Next, a method of using the door lock mechanism according to this embodiment will be described. First, the drop bar 10 to which the movable member 18 is locked is attached substantially vertically below the back surface of the gate 30 by a guide member 32 as shown in FIG. A handle bar 34 is formed to project substantially at right angles to 10. Guide member 3
Reference numeral 2 denotes a cylindrical body having a space between the drop bar 10 and the slide body 10 slidably holding the drop bar 10. On the side surface of the guide member 32, a guide groove 36 through which the grip bar 34 passes is formed substantially vertically. In a state where the gate 30 is closed, a drop receiver 38 is provided below the drop bar 10 so as to be embedded in the ground or the surface of the floor material. As shown in FIG. 1, the drop receiving part 38 is a cylindrical body having a diameter slightly larger than the side surface part 20 of the movable member 18, and a flange part 40 is formed on the entire peripheral surface of the upper end surface of the drop receiving part 38. .

When the gate 30 is fixed by the drop bar 10, the drop bar 10 is lowered and the movable member 18 is inserted into the drop receiver 38 as shown in FIG. Further FIG.
As shown in (B), when the drop bar 10 is slightly pushed down, the flange portion 22 of the movable member 18 comes into contact with the flange portion 40 of the drop receiver 38, and the movable member 18 is pushed up to the large diameter portion 14a side. And the inclined portion 1 fitted in the through hole 28.
The diameter of the hole 4 gradually increases, and the periphery of the through hole 28 is divided into three by the slit 24, so that it can be easily spread. Then, the side surface portion 20 is also pushed out to increase its diameter, and is pressed against the inner peripheral surface of the drop receiving member 38 to be locked without rattling, so that the gate 30 is securely fixed to the ground or the floor. At this time, since a force for pushing up the inclined portion 14 is generated by the elastic force of the movable member 18, the grip bar 34 formed at a predetermined position of the drop bar 10 is brought into contact with the lower end surface of the guide member 32, and the like. Is locked so as not to be pushed back upward.

To release the lock of the gate 30, the grip bar 34 is passed through the guide groove 36, and the drop bar 10 is raised. At this time, the movable member 18 automatically returns to the small diameter portion 14b side by the elastic force.

According to the door lock mechanism of this embodiment,
The gate and the like can be securely locked to the floor or the ground by a simple operation without rattling. Since the locking and unlocking are performed by changing the diameter of the movable member 18, when the drop rod 10 is put in and out of the drop receiving part 38, the diameter of the movable member 18 is small, so it is easy and convenient to put it in and out. When the locking is performed, the diameter of the movable member 18 becomes large in the drop receiving portion 38, and the movable member 18 comes into contact with the inner peripheral surface of the drop receiving portion 38 with an appropriate pressure. Thus, the gate does not vibrate even if it receives wind or the like, does not generate noise, is quiet, and improves the durability of the gate. Further, since the door lock mechanism has a simple structure, it is easy to manufacture and the cost is low.

Next, a second embodiment of the present invention will be described.
A description will be given based on FIGS. Here, the same members as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted. In the door lock mechanism of this embodiment, the movable member 41 is made of metal, has a cylindrical side surface portion 42 having a diameter slightly larger than the base portion 12, and a flange portion 44 is provided at an upper end portion of the side surface portion 42. It is formed on the entire circumference. A bottom portion 48 is formed at the end opposite to the flange portion 44, and a through hole 46 serving as a contact portion of the inclined portion 14 is formed at the center of the bottom portion 48.
Are formed. One slit 50 is formed in the side surface portion 42 substantially parallel to the center of the side surface portion 42, and the slit 50 is also connected to the flange portion 44 and the bottom portion 48.

The door lock mechanism of this embodiment performs the same operation as shown in FIG. 6 by the same assembling method as in the above embodiment. It has the same effect, and has high durability.

The door lock mechanism of the present invention is not limited to the above embodiment, but may be changed as appropriate, such as the material, the shape of each member, and the number of slits. It can be used for various movable closing members such as doors in addition to gates.

[0019]

According to the door lock mechanism of the present invention, it is possible to securely fix a gate or the like to the ground or floor with a simple structure, and it is quiet without vibrating even if the door receives wind or the like. is there.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view (A) of a state in which a drop bar of a door lock mechanism according to a first embodiment of the present invention is inserted into a drop holder, and a longitudinal sectional view (B) of a locked state.

FIG. 2 is a front view of a drop bar of the door lock mechanism of the embodiment.

FIG. 3 is a plan view (A), a right side view (B), a bottom view (C), and a cross-sectional view taken along line II (D) of the movable member of the door lock mechanism of this embodiment.

FIG. 4 is a perspective view showing a use state of the embodiment.

FIG. 5 is a plan view (A), a right side view (B), and a bottom view (C) of a movable member of a door lock mechanism according to a second embodiment of the present invention.
And FIG. 2D is a sectional view taken along line II-II.

FIG. 6 is a front view (A) showing a state in which a drop bar of the door lock mechanism of this embodiment is inserted into a drop holder, and a front view (B) showing a locked state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Drop bar 12 Base part 14 Inclined part 16 Locking part 18 Movable member 20,42 Side part 22,40,44 Flange part 24 Slit 28 Through hole 38 Drop receiving part

Claims (3)

[Claims] 1. A drop bar attached to a door of a building, and a drop bar embedded in a floor material or the ground of the building and into which a drop bar is inserted. A lower end of the drop bar has a thin tip. A movable member formed of an elastic material is slidably fitted to the inclined portion, and a contact portion that contacts the inclined portion is provided inside the side surface of the movable member. When inserting the drop bar into the drop tray,
The movable member is pushed up relatively to the inclined portion by the drop receiving portion, the contact portion is pushed and spread along the inclined portion, and the side surface portion of the movable member is pressed against the inner peripheral surface of the drop receiving portion. A door lock mechanism. 2. The movable member is integrally formed of an elastic material, and is formed on a cylindrical side surface, a flange formed around the upper end surface of the side surface, and a lower end of the side surface. A bottom portion serving as the contact portion, a through hole formed at the center of the bottom portion and into which the inclined portion is fitted, and a slit provided continuously from the through hole to the side surface portion. The door lock mechanism according to claim 1. 3. The inclined portion is formed in a conical shape, and a hemispherical engaging portion is provided at a tip thereof, and a peripheral portion of the engaging portion protrudes on the circumference of the inclined portion. The door lock mechanism according to claim 1, wherein the bottom portion is locked to a peripheral portion of the locking portion to prevent the bottom portion from falling off.