JPH0920488A - Buffer device for landing door of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a buffer device for a landing door of an elevator which can be easily further surely mounted by only work from a landing side to eliminate coming off and floating up even when received a shock in a condition of ordinary use. SOLUTION: A buffer device comprises a door stop rubber 12 of absorbing a shock when opened/closed a landing door of an elevator, mounting metal fitting 17 screwed to a thread part 12b of this door stop rubber 12 to be made insertable from a mounting hole to its reverse side drilled in a landing jamb 1 and a small screw 18 provided in this mounting metal fitting 17. The small screw 18 is engaged with a notch provided in the periphery of the mounting hole of the jamb 1, to impede turning the mounting metal fitting 17, and by rotating the door stop rubber 12, a side wall of the jamb 1 is interposed between a head part 12a of this door stop rubber and the mounting metal fitting 17, to be fastened, thus to firmly fix the door stop rubber 12 to the jamb.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock absorber equipped with a shock absorber such as a so-called door contact rubber that absorbs impact when an elevator landing door is opened and closed.

[0002]

2. Description of the Related Art FIG. 8 is a perspective view of an elevator landing door and its surroundings showing an installation state of a door stopper rubber as an example of a conventional shock absorber, FIG. 9 is a plan sectional view thereof, and FIG. 10 is a conventional door stopper rubber. It is a perspective view which shows an example of 2.

As shown in FIG. 8, conventionally, in order to absorb the shock when the elevator landing door 4 is opened and closed, the landing is provided on the side surface of the frame such as the three-way frame 1 provided in the opening of the elevator landing. A cushioning device, such as a rubber stopper 2, is provided to cushion the collision of the door 4 with the frame when the door 4 is closed. In the figure, reference numeral 3 is a hall position indicator for displaying the location (floor number) of the hall.

In the conventional example shown in detail in FIGS. 9 and 10,
The door contact rubber 2 is entirely formed of rubber, and the three-sided frame 1
The mounting hole 1a formed in the side surface is fitted from the landing side and elastically fixed and held. That is, the door contact rubber 2 is press-fitted into the mounting hole 1a on the side surface of the three-way frame 1 and is fixed to the side surface of the three-way frame 1 by its own elasticity.

FIG. 11 is a perspective view showing another conventional example of the shock absorber. In this conventional door contact rubber 2A, a head portion 2a that contacts the landing door 4 is formed of rubber, and one end of a metallic screw portion 2b is embedded in the head portion 2a. In this conventional example, the threaded portion 2b is inserted from the landing side into the mounting hole 1a formed in the side surface of the three-way frame 1 to attach the mounting hole 1a.
By screwing a larger size nut 5 from the back side of the three-way frame 1 into the screw portion 2b, the side surface of the three-way frame 1 is sandwiched between the head 2a of the door contact rubber 2A and the nut 2b. Is fixed to the side surface of the three-way frame 1.

[0006]

In the conventional example of FIG. 10,
Although there is an advantage that it can be installed only from the landing side, the door contact rubber 2 is fixed to the mounting hole 1a of the three-sided frame 1 only by its own elastic force, so that the elevator user can carry it when carrying luggage. If the door stopper rubber 2 is hit with the door stopper rubber 2 or the like, the door stopper rubber 2 may come off, or may float and the door 4 at the elevator landing may not be closed completely.

Further, in the conventional example of FIG. 11, the three-way frame 1 is sandwiched and fixed by the head 2a of the rubber 2A and the nut 5, so that the problem as in the conventional example of FIG. Although it does not occur, it is necessary to go around the back side of the three-sided frame 1 to perform the installation work, and not only is the work troublesome and inefficient, but it cannot be used if the back side of the three-sided frame 1 is filled with mortar etc. There was a problem.

Therefore, the present invention is intended to solve the above-mentioned problems of the prior art, and can be easily and surely installed by only the work from the landing side, and can be detached or floated up even when a shock is applied in a normal use condition. It is an object of the present invention to provide a shock absorber for a landing door of an elevator that does not wear.

[0009]

According to a first aspect of the present invention, there is provided a shock absorber for elevator hall doors, which is shock-absorbing when the elevator hall door is opened and closed, and is screwed to the shock absorber. Mounting means that can be inserted into the back side of the mounting hole formed in the frame provided in the opening of the landing, and the cushioning means is rotated with the mounting means inserted into the back side of the mounting hole. In this case, the buffer means and the mounting means are configured to prevent relative rotation of the mounting means.

In the elevator landing door shock absorber according to claim 2 of the present invention, the shock absorbing means has a size larger than the mounting hole, and the head is made of an elastic material, and one end of the shock absorbing means is attached to the head. It has a screw part which is connected and which has a male screw engraved on the outer periphery.

In the shock absorber for elevator landing door according to claim 3 of the present invention, the relative rotation restraining means is provided in the mounting means and includes an engaging member capable of engaging with the engaging portion of the frame. Composed.

In the elevator landing door shock absorber according to claim 4 of the present invention, the engaging portion of the frame is formed by an engaging groove provided in the vicinity of the mounting hole of the frame,
The engagement member includes an engagement protrusion that can engage with the engagement groove.

In the elevator landing door shock absorber according to claim 5 of the present invention, the mounting means has a size larger than the mounting hole formed in the frame, but is inserted into the back side of the mounting hole. It is composed of an engaging metal fitting.

According to a sixth aspect of the present invention, there is provided an elevator landing door shock absorber, which is mounted on the threaded portion between the head of the shock absorbing means and the mounting means. A spacer is further provided that suppresses movement of the screw portion within the mounting hole when the mounting means is tightened by rotating the cushioning means while being inserted into the back side of the frame body.

In the elevator landing door shock absorber according to the seventh aspect of the present invention, the spacer is formed to have a diameter slightly smaller than the mounting hole of the frame.

[0016] In the elevator landing door shock absorber according to the eighth aspect of the present invention, the spacer is provided with an engaging portion that is loosely fitted to the screw portion and that is engageable with the relative rotation inhibiting means.

[0017]

In the shock absorber for elevator landing doors according to the first aspect of the present invention, the mounting means screwed to the shock absorbing means is inserted from the mounting hole of the frame body to the back side thereof, and the relative rotation inhibiting means cushions the mounting means. By rotating the cushioning means while suppressing the relative rotation with respect to the means, the cushioning means can be fastened to the mounting means while holding the frame body, thereby easily and reliably fixing the cushioning means to the frame body. You can

In the elevator landing door shock absorber according to claim 2 of the present invention, when the head of the shock absorber is rotated, the screw part coupled to the head is also integrally rotated and screwed therein. The head can be strongly tightened by the screw action with respect to the combined mounting means. Therefore, even if a relatively large impact force is applied to the head, it can sufficiently withstand this, and does not come off or float up from the frame. In the elevator landing door shock absorber according to the third aspect of the present invention, the engagement member of the attachment means engages with the engagement portion of the frame body, whereby the rotation of the attachment means is suppressed.

In the elevator landing door shock absorbing device according to the fourth aspect of the present invention, the engaging projection is engaged with the engaging groove provided in the vicinity of the mounting hole of the frame, whereby the rotation of the mounting means is suppressed. To be done.

In the shock absorber for elevator landing doors according to the fifth aspect of the present invention, the fitting is tilted and inserted into the back side of the frame from the fitting hole, and then the fitting means is pulled forward to pull the fitting to the frame. It is possible to fix the cushioning means to the frame body by bringing the frame body into contact with the back surface and rotating the cushioning means so as to sandwich the frame body between the fitting and the cushioning means.

In the shock absorber for elevator landing doors according to the sixth aspect of the present invention, when the shock absorbing means is rotated and tightened to the mounting means, the spacer mounted between them is the inner peripheral surface of the mounting hole of the frame body. By abutting against, the large movement of the cushioning means in the vertical and horizontal directions is suppressed.

In the shock absorber for elevator landing doors according to the seventh aspect of the present invention, since the size of the spacer is formed to be slightly smaller than the mounting hole, the movement of the shock absorbing means in the vertical and horizontal directions can be made more effective. Can be suppressed.

In the elevator landing door shock absorbing device according to the eighth aspect of the present invention, the rotation of the spacer in the mounting hole is suppressed by the engagement of the spacer with the relative rotation inhibiting means.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view of a three-way frame of an elevator landing showing a mounting state of a shock absorber according to the present invention, FIG. 2 is a cross-sectional view thereof, and FIGS. 3 to 5 are spacers for attaching the shock absorber of the present invention to the three-way frame. 6 is a front view showing the mounting bracket and the mounting holes on the side surfaces of the three-way frame, respectively.
FIG. 7 is a vertical sectional view showing a state where the shock absorber of the present invention is being attached, and FIG. 7 is a vertical sectional view showing a state where the shock absorber is attached.

As shown in FIGS. 1 and 2, a door contact rubber 12 as a cushioning means of the present invention has a large-diameter head 12a made of an elastic material such as rubber and one end joined to the head 12a. It has a screw portion 12b having an external thread engraved on the outer peripheral surface.

Further, the spacer 16 is loosely fitted to the threaded portion 12b of the door contact rubber 12, and the mounting metal fitting 17 as the mounting means can be screwed.

The three-way frame 11 as a frame body provided in the landing opening of the elevator is provided with a substantially circular mounting hole 11a for inserting the threaded portion 12b of the rubber 12 for door-to-door contact. 11a, as shown in FIG.
In order to accommodate the spacer 16 loosely fitted in the threaded portion 12b, the spacer 16 is formed to have an outer diameter larger than that of the spacer 16, and a peripheral edge portion of the mounting hole 11a is provided with a mounting metal fitting 17 extending radially outward from the mounting metal fitting 17. A notch 11b is formed as an engaging portion for preventing rotation.

As shown in detail in FIG.
Has an insertion hole 16a formed at a center portion thereof and having a diameter slightly larger than the outer diameter of the threaded portion 12b for inserting the threaded portion 12b of the door contact rubber 12, and is formed in an annular shape as a whole, and As is apparent from FIGS. 2 and 7, the outer peripheral diameter is formed slightly smaller than the inner peripheral diameter of the mounting hole 11a, and when the door contact rubber 12 is attached to the three-way frame 11, the door contact rubber 12 is When it is rotated, it acts so as to prevent it from moving greatly in the vertical and horizontal directions.

Further, a part of the annular spacer 16 is cut out in the radial direction to form an engagement groove 16b for preventing rotation, and the spacer 16 is a side wall on which the door stopper rubber 12 of the three-way frame 11 is mounted. It has substantially the same thickness as the thickness of the part.

As is apparent from FIG. 14, the mounting bracket 17 is composed of a rectangular plate material whose length in the longitudinal direction is larger than the diameter of the mounting hole 11a of the three-way frame 11 and whose width is smaller than the diameter of the mounting hole 11a. The mounting hole 11 of the mounting bracket 17
In order to facilitate insertion into a, the four corners are dropped to form an approximately octagonal shape.

Further, a screw hole 17a that can be screwed into the screw portion 12a of the door contact rubber 12 is formed at a position deviated from the center position on the center line of the mounting bracket 17 in the substantially longitudinal direction.

Further, a small screw 18 as an engaging member is screwed on the side opposite to the screw hole 17a with respect to the center position on the longitudinal center line of the mounting member 17 in proximity to the longitudinal end. 1, the spacer 16 and the mounting bracket 17 are attached to the threaded portion 12a of the rubber 12 for door-to-door contact.
When attaching 2 to the three-way frame 11, the tip of the machine screw 18 of the mounting bracket 17 has the engagement groove 16 b in the radial direction of the spacer 16.
And the notch 11b on the outer periphery of the mounting hole 11a of the three-way frame 11 to partially engage with each other to prevent the mounting bracket 17 and the spacer 16 from rotating together when the door-stop rubber 12 is rotated. work.

Next, the operation of this embodiment will be described mainly with reference to FIGS. 6 and 7. First, the spacer 16 is fitted into the threaded portion 12b of the door contact rubber 12, and then the fitting 17 to which the machine screw 18 is attached is screwed. In this state, as shown in FIG.
Inclining the threaded portion 12b of the three-way frame 11 a little, and inserting the end side of the mounting bracket 17 on which the machine screw 18 is mounted into the mounting hole 11a from the front side, that is, the landing side, to mount the mounting bracket 17 on three sides. It is arranged on the back side of the frame 11.

Then, the mounting member 17 and the spacer 16 are appropriately rotated relative to each other on the threaded portion 12b to appropriately mount the mounting member 17
The small screw 18 of the
To be engaged.

In this state, when the door stopper rubber 12 is pressed downward and pulled toward you, it is rotated little by little, so that the machine screw 18 of the mounting member 17 is firmly engaged with the notch 11b and its rotation is suppressed. Since the head 12a is relatively close to the mounting bracket 17, the side wall of the three-way frame 11 is finally sandwiched between the head 12a and the mounting bracket 17 and tightened to be firmly fixed. It On this occasion,
The engagement groove 16b of the spacer 16 is also a small screw 1 of the mounting bracket 17.
When the door contact rubber 12 is rotated and tightened, a part of the outer peripheral edge of the spacer 16 comes into contact with the inner peripheral edge of the mounting hole 11a of the three-sided frame 11 and the door stop A large movement of the rubber 12 in the vertical and horizontal directions is suppressed. In this way, FIG.
1 shows the state of being tightly fixed.

In the above embodiment, the engaging member provided on the mounting member 17 is constituted by the machine screw 18. However, the engaging member can be engaged with the notch 11b of the three-way frame 11 so that the mounting member can be engaged. You may comprise by the protrusion provided in 17. In addition, if necessary, a notch or groove for engagement may be provided in the mounting bracket 1
7 may be provided, and a protrusion capable of engaging with the protrusion may be provided on the three-way frame 11 side.

[0037]

As described above, according to the present invention, the following unique operational effects can be obtained.

According to the elevator landing door shock absorber according to the first aspect of the present invention, the shock absorbing means for absorbing the shock when the elevator hoistway door is opened and closed, and the shock absorbing means screwed to the shock absorbing means to open the opening of the hall. Mounting means that can be inserted into the back side from a mounting hole formed in a frame provided in the frame, and when the cushioning means is rotated with the mounting means inserted into the back side from the mounting hole, Since the buffer means and the relative rotation restraining means for restraining the relative rotation between the mounting means are provided, as described above, in the conventional case, the back side of the frame body such as the landing three-way frame is filled with mortar or the like. Although it was necessary to use a door stopper rubber integrally formed of only rubber, by using the shock absorbing device according to the present invention, a frame body is sandwiched between the shock absorbing means and the attaching means by screw engagement. It becomes possible to firmly fix it by mechanical force, and therefore, even if the shock absorbing means is shocked in normal use, the shock absorbing means does not come off or float up. It is possible to solve the problem that the door of the elevator hall is not closed completely due to such a situation. Further, since the mounting work of the buffer means can be performed only from the landing side, the mounting work can be efficiently and easily performed.

According to the elevator landing door shock absorber according to claim 2 of the present invention, the shock absorbing means has a size larger than the mounting hole, and is made of an elastic material, and one end thereof is the head. Since it has a screw part that is connected to the head part and a male screw is engraved on the outer periphery, by rotating the head part of the cushioning means, the screw part connected to the head part is also rotationally driven integrally, and The head can be strongly tightened by the screw action with respect to the screwed mounting means, and therefore, even if a relatively large impact force is applied to the head, the cushioning means can sufficiently withstand this, It is possible to prevent it from coming off or rising from the frame.

In the elevator landing door shock absorber according to claim 3 of the present invention, the relative rotation inhibiting means is provided in the mounting means, and is provided by an engaging member capable of engaging with the engaging portion of the frame body. Since it is configured, it is possible to reliably prevent the rotation of the attaching means by engaging the attaching means with the frame body by the engagement of the engaging member of the attaching means with the engaging portion of the frame body.

In the shock absorber for elevator landing door according to claim 4 of the present invention, the engaging portion of the frame is constituted by an engaging groove provided in the vicinity of the mounting hole of the frame,
Since the engaging member is composed of an engaging protrusion that can engage with the engaging groove, the engaging protrusion is engaged with the engaging groove of the frame body to adopt an extremely simple structure. The rotation of the means can be prevented.

In the elevator landing door shock absorber according to claim 5 of the present invention, the mounting means has a size larger than the mounting hole formed in the frame, but is inserted into the back side of the mounting hole. Since it is configured with a mounting bracket that can be installed, tilt the mounting bracket from the landing side into the mounting hole and place it on the back side of the frame, and then pull the cushioning means toward you to attach the mounting bracket to the back side of the frame. By contacting and rotating the cushioning means, the cushioning means can be reliably fixed to the frame body with the frame body being sandwiched between the fitting and the cushioning means.

A shock absorber for an elevator landing door according to a sixth aspect of the present invention is mounted on the screw portion between the head portion of the shock absorbing means and the mounting means, and the mounting means is mounted through the mounting hole. When the mounting means is tightened by rotating the cushioning means while being inserted into the back side of the frame, a spacer for suppressing movement of the screw portion within the mounting hole is further provided, so that the cushioning means is rotated. When tightened to the mounting means by the spacers, the spacers mounted between them come into contact with the inner peripheral surface of the mounting hole of the frame body, so that it is possible to suppress large movements of the cushioning means in the vertical and horizontal directions. It is possible to efficiently and smoothly attach the cushioning means.

In the shock absorber for elevator landing doors according to the seventh aspect of the present invention, since the size of the spacer is formed to be slightly smaller than the mounting hole, the shock absorbing means can be moved more effectively in the vertical and horizontal directions. Therefore, it is possible to more efficiently and smoothly attach the cushioning means.

In the shock absorber for elevator landing door according to the eighth aspect of the present invention, the spacer is loosely fitted in the threaded portion and has an engaging portion that can engage with the relative rotation restraining means. The engagement between the engaging portion and the relative rotation restraining means suppresses the rotation of the spacer in the mounting hole, and the mounting work can be efficiently performed.

[Brief description of drawings]

FIG. 1 is a perspective view showing a mounting state of a shock absorber according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state in which the shock absorber according to the embodiment of the present invention is attached to the landing frame.

FIG. 3 is a front view of a spacer of the shock absorber according to the present invention.

FIG. 4 is a front view of a mounting bracket of the shock absorber according to the present invention.

FIG. 5 is a partial front view showing the shape of a mounting hole formed in the three-sided frame of the shock absorber according to the present invention.

FIG. 6 is a vertical cross-sectional view showing a state in which the shock absorber according to the present invention is being attached to the three-way frame.

FIG. 7 is a vertical cross-sectional view showing a state after the shock absorber according to the present invention is attached to the three-way frame.

FIG. 8 is a perspective view showing a mounting state of a conventional shock absorber.

FIG. 9 is a cross-sectional view showing an attached state of an example of a conventional shock absorber.

10 is an enlarged perspective view of the conventional shock absorber of FIG.

FIG. 11 is a perspective view showing another example of a conventional shock absorber.

[Explanation of symbols]

11 landing frame as a frame, 11a mounting holes, 1
1b Cutouts as engaging parts of frame, 12 Door contact rubber as cushioning means, 12a Head part, 12b screw part,
16 spacers, 16b Engagement grooves as engaging portions of spacers, 17 Mounting brackets as mounting means, 18 Machine screws as engaging members.

Claims (8)

[Claims] 1. A shock-absorbing means for absorbing a shock when an elevator landing door is opened and closed, and a mounting hole screwed to the shock-absorbing means and formed in a frame provided at an opening of the landing hole to a back side thereof. Mounting means that can be inserted, and relative rotation restraining means that restrains relative rotation between the cushioning means and the mounting means when the cushioning means is rotated in a state in which the mounting means is inserted behind the mounting hole. A shock absorber for a landing door of an elevator, comprising: 2. The buffer means has a size larger than the mounting hole, and comprises a head made of an elastic material, and a screw part having one end coupled to the head and a male screw engraved on the outer periphery. The shock absorber for an elevator landing door according to claim 1, wherein the shock absorber has an elevator. 3. The elevator according to claim 1, wherein the relative rotation restraint means is provided on the mounting means and is constituted by an engagement member capable of engaging with an engagement portion of the frame body. Shock absorber for landing doors. 4. The engagement portion of the frame body is configured by an engagement groove provided in the vicinity of the mounting hole of the frame body, and the engagement member is an engagement capable of engaging with the engagement groove. The shock absorber for an elevator landing door according to claim 3, wherein the shock absorber is constituted by a protrusion. 5. The mounting means has a size larger than the mounting hole formed in the frame body, but is constituted by a mounting metal fitting that can be inserted into the back side of the mounting hole. 1. An elevator landing door shock absorber according to 1. 6. The buffer means is mounted on the screw portion between the head of the buffer means and the mounting means, and the buffer means is rotated with the mounting means inserted into the back side of the frame through the mounting hole. The shock absorber for an elevator landing door according to claim 2, further comprising a spacer that suppresses movement of the threaded portion within the mounting hole when the mounting means is tightened. 7. The spacer is formed to have a diameter slightly smaller than that of the mounting hole of the frame body.
A shock absorber for a landing door of an elevator. 8. The spacer is loosely fitted to the screw portion,
The shock absorber for an elevator landing door according to claim 6, further comprising an engaging portion that can engage with the relative rotation restraining means.