JP3046559B2 - Door sealing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the technical field of a door sealing device for closing a gap between a door and a door mounting frame around the door.

[0002]

2. Description of the Related Art Conventionally, as a door sealing device, for example, one disclosed in Japanese Utility Model Publication No. 7-17755 is known.

[0003] This conventional door sealing device includes a shaft that slides in contact with a door mounting frame around the door when the door is opened and closed, and a spring that biases the shaft to project toward the door mounting frame. A seal member that protrudes and retracts from a lower end surface of the door to close and open a gap formed between the door and a floor surface below the door, and a link member that links the shaft and the seal member with a large leverage. Is provided.

In this conventional door sealing device, the seal member can be reliably advanced into the gap and closed by the large leverage of the link member regardless of the width of the gap.

[0005]

In the above-mentioned conventional door sealing device, when the door is closed tightly or when there is a foreign substance in the gap, the link member operates so as to advance the seal member into the gap. Since a strong impact or load is applied to the link member, there is a problem that the link member is easily damaged or deformed and has low durability.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide a door sealing device with improved durability of a link member.

[0007]

In order to solve the above-mentioned problems, a door sealing device according to the present invention employs the following means.

That is, according to the first aspect, a shaft that slides in response to opening and closing of the door, a spring that urges the shaft to resiliently press the shaft in a predetermined direction, and a shaft that protrudes and retracts from the end of the door and surrounds the door. A seal member for closing and opening a gap formed in a door, and a link member for linking the shaft and the seal member, the door is slid in a coaxial direction with the shaft at a link terminal on the shaft side of the link member. A possible slider is connected, and the slider and the shaft are connected via a buffer spring.

In this means, a shock absorbing structure including a slider and a shock absorbing spring is provided in the sliding direction of the shaft, and the shock and load applied to the link member are attenuated.

According to a second aspect of the present invention, in the door seal device of the first aspect, the slider is provided with a guide groove for guiding and restricting the turning operation of the link member, and the shape of the guide groove is in the sliding direction of the shaft. It is characterized in that it has a rectangular shape with an inclined portion and a parallel portion.

According to this means, the V-shaped inclined portion of the guide groove slidably guides the turning operation of the link member for causing the seal member to advance while resiliently pressing the buffer spring, and the V-shaped inclined portion of the guide groove is cushioned. Locking is restricted on the rotation of the link member that has advanced the seal member by releasing the spring pressure.

Further, in claim 3, claim 1 or 2
Is characterized in that a detachable head which is in contact with a door mounting frame or the like around the door is attached to the tip of the shaft.

In this means, the head is inserted into and removed from the shaft and replaced.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a door sealing device according to the present invention will be described below with reference to the drawings.

FIG. 1 to FIG. 5 show an embodiment (1) of a door sealing device according to the present invention.

In this embodiment, a door D is embedded in a lower end surface Da of the door D to close a gap S formed between the door D and a floor F around the lower side.

In this embodiment, a shaft 2, a spring 3, and a housing 3 are embedded in a mounting groove Dc dug from the lower end face Da of the door D to both end faces Db and fixed by screws B. Each part of the buffer spring 4, the slider 5, the link member 6, and the seal member 7 is housed.

The casing 1 includes a main body 11 having a U-shaped cross section.
End members 12 and 13 are fitted and assembled to both ends of the body to form an elongated shape. The main body 11 is provided with a step projection 111 extending in the length direction substantially inside the center portion, and the inside is incompletely vertically divided, and a band-shaped flange at the lower end abutting the lower end surface Da of the door D. 112 are provided. One end member 12 includes a flange 121 that abuts on both side end surfaces Db of the door D, and a relatively long cylindrical portion 122 that is formed integrally with the flange 121 and that is fitted into the upper section of the main body 11.
And The flange 121 of the end member 12 is provided with a screw hole 123 for the screw B and an end hole 124 communicating with the inside of the cylindrical portion 122. Tube part 122 of end member 12
A shaft receiver 125 for slidably supporting the shaft 2 is provided substantially at the center thereof, and a shaft 126 for rotatably supporting the link member 7 at a fitting end (an end opposite to the flange 121). Is provided. The other end member 1
3 is a flange 131 abutting on both side end surfaces Db of the door D.
And a relatively short cylindrical portion 132 formed integrally with the flange 131 and fitted in the upper section of the main body 11. A screw hole 133 for the screw B is provided in the flange 131 of the end member 13.

The shaft 2 is connected to the end member 12 of the casing 1.
Are slidably accommodated in a cylindrical portion 122 of the cylinder, and three washers 23, 24, and 25 are fixed in a flange shape to a round bar-shaped shaft body 22 having a grooved projection 21 provided at a tip portion. Have been. One washer 23 is provided near the grooved projection 21 of the shaft body 22. Another washer 24 is provided at the rear end of the shaft body 22. The remaining washer 25 is provided slightly closer to the washer 24 at the rear end portion than the center between the both washers 23 and 24 of the shaft body 22.

A head 8 formed of a synthetic resin material and having a headed cylindrical shape is attached to the grooved projection 21 of the shaft 2. The head 8 can be inserted into and removed from the grooved projection 21 so that the head 8 can be easily replaced when it is worn or damaged.

The spring 3 includes a shaft body 22 of the shaft 2.
It consists of a coil spring fitted on the outside of the
It is provided between the washer 23 near the grooved projection 21 of the shaft 2 and the shaft receiver 125 of the one end member 12 of the casing 1.

The spring 3 urges the head 8 so that the head 8 protrudes to some extent from the end hole 124 of the one end member 12 of the casing 1.

The cushioning spring 4 is formed of a coil spring fitted to the outside of the shaft body 22 of the shaft 2, and is provided between the washer 25 at the center of the shaft 2 and the slider 5.

The buffer spring 4 presses the slider 5 against the washer 24 at the rear end of the shaft 2 with the head 8 projecting from the end hole 124 of the one end member 12 of the casing 1. In addition, between the buffer spring 4 and the slider 5,
The buffer spring washer 9 loosely fitted to the shaft main body 22 of the shaft 2 is provided.

The slider 5 is connected to the end member 12 of the casing 1.
The shaft body 22 of the shaft 2 is slidably supported in one end portion of the cylindrical portion 122 so as to be slidable coaxially with the shaft 2, and the washer 24 at the rear end portion is prevented from coming off. It is formed in a box shape provided with a shaft receiver 51. Also, on the box-shaped side surface of the slider 5,
Part 521 inclined with respect to the sliding direction of shaft 2
A guide groove 52 having a rectangular shape with a portion 522 that is parallel to is provided.

The link member 6 is connected to the end member 1 of the casing 1.
The other end member 13 is rotatably supported by the second shaft 126.
A long link plate 61 extending in the direction to obtain a large leverage, and a short link plate 62 connected to the long link plate 61 are provided. One end of the long link plate 61 is a first link pin 63 and the slider 5
Of the second link pin 64
To the short link plate 62.

The first link pin 63 of the link member 6
In the state where the head 8 protrudes from the end hole 124 of the one end member 12 of the casing 1, the guide groove 52 of the slider 5 is
Is located at the lower end of the inclined portion 521.

The sealing member 7 is provided on the main body 1 of the casing 1.
The lower part 1 is housed so as to protrude and retract from the gap S, and is formed of a synthetic resin material such as vinyl chloride in a band packing shape. In the lower part of the seal member 7,
A hollow buffer 71 is provided. A shaft 72 to which the short link plate 62 of the link member 6 is connected is fixed above the seal member 7.

According to this embodiment, when the door D is closed and the head 8 comes into contact with the door mounting frame T, the shaft 2 slides toward the rear end portion against the elastic pressure of the spring 3.

When the shaft 2 slides, the resilient pressure of the buffer spring 4 is provided by the washer 25 at the center of the shaft 2, and the slider 5 is resiliently slid via the buffer spring receiving washer 9. The slider 5 slides on the guide groove 5 of the slider 5.
2 to guide the sliding of the first link pin 63 of the link member 6.

The sliding of the first link pin 63 of the link member 6 in the inclined portion 521 of the guide groove 52 of the slider 5 has a large leverage about the axis 126 of the end member 12 of the casing 1 of the long link plate 61. Causes rotation. The rotation of the long link plate 61 of the link member 6 causes the short link plate 62 to lower the seal member 7. The lowered sealing member 7 comes into contact with the floor surface F, closes the gap S, and seals the inside and outside of the door D.

In the sliding region a (see FIG. 5) of the first link pin 63 of the link member 6 in the inclined portion 521 of the guide groove 52 of the slider 5 (see FIG. 5), when the buffer spring 4 is completely compressed and the elastic pressure is lost, The slider 5 is slid while being elastically pressed in a slightly compressed state. Therefore, when the door D is closed tightly or when there is a foreign substance in the gap S,
Even if a strong impact or load is applied to the link member that operates to cause the seal member 7 to advance into the gap S, the link member 7 can be prevented from being damaged and deformed by being absorbed by the buffer spring 4. For this reason, the durability of the link member 7 increases.

When the first link pin 63 of the link member 6 reaches the end of the sliding area a (the point of contact with the parallel portion 522), the sealing member 7 which has descended is set to abut the floor surface F. The spring 4 is completely extended and the link member 6
The first link pin 63 enters the sliding area b (see FIG. 5) of the parallel portion 522 as it is. Therefore, since the buffer spring 4 is released from the compressed state and unnecessary fatigue is avoided, the durability of the buffer spring 4 is also increased.

The first link pin 63 of the link member 6
Reaches the end of the sliding region b, the parallel portion 522 of the guide groove 52 of the slider 5 is arranged in such a manner as to resist the rotation of the long link plate 61. Therefore, even if a stress or the like for raising the seal member 7 occurs for some reason, the seal inside and outside the door D is secured without the seal member 7 rising.

When the door D is opened and the head 8 is separated from the door mounting frame T, and the shaft 2 slides toward the distal end portion due to the elastic pressure of the spring 3, the sealing member 7 is raised by the reverse operation described above. The gap S is opened away from the floor F to release the seal inside and outside the door D.

The slider 5 is slid by being pulled by the washer 24 at the rear end of the shaft 2.

FIG. 6 shows an embodiment (2) of a door sealing device according to the present invention.

In this embodiment, a female screw 8 ′ is formed in the head 8 and the male screw 2
6 is screwed.

According to this embodiment, by increasing the axial length of the male screw portion 26 of the shaft 2, the head 8
Can be immersed through the end hole 124 of the end member 12 of the casing 1 so that the sealing by the seal member 7 does not operate.

In this embodiment, the spring 3 also functions as a stop for the head 8.

As described above, in addition to the illustrated embodiment, it is also possible to configure so that the upper part, the side part, and the like of the door D are sealed.

Further, it is also possible to constitute each part outside the door D.

[0043]

As described above, the door sealing device according to the present invention is provided with the buffer structure including the slider and the buffer spring in the sliding direction of the shaft, so that the impact and load applied to the link member are attenuated. This has the effect of increasing the durability of the link member.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment (1) of a door sealing device according to the present invention.

FIG. 2 is an enlarged view of a main part showing the operation of FIG.

FIG. 3 is a diagram showing an operation subsequent to FIG. 2;

FIG. 4 is a side view of FIGS. 2 and 3;

FIG. 5 is a simplified diagram showing the operation principle of FIGS. 1 to 3;

FIG. 6 is a cross-sectional view of a main part showing an embodiment (2) of a door sealing device according to the present invention.

[Explanation of symbols]

 2 Shaft 3 Spring 4 Buffer spring 5 Slider 52 Guide groove 521 Inclined part 522 Parallel part 6 Link member 7 Seal member 8 Head D Door S Clearance

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E06B ^7/ 18-7/215

Claims (3)

(57) [Claims] 1. A shaft which slides in response to opening and closing of a door, a spring which elastically urges the shaft in a predetermined direction, and a gap formed between the door and the periphery of the door by protruding and retracting from an end of the door. In a door sealing device including a seal member for closing and opening the shaft, and a link member for linking the shaft and the seal member, a slider slidable coaxially with the shaft is connected to a link terminal on the shaft side of the link member. And a slider and a shaft are connected via a buffer spring. 2. The door sealing device according to claim 1, wherein the slider has a guide groove for guiding and restricting the rotation of the link member, and the shape of the guide groove is parallel to a portion inclined with respect to the sliding direction of the shaft. A seal device for a door, comprising a rectangular shape with various parts. 3. The door sealing device according to claim 1, wherein the shaft has a detachable head attached to a front end of the shaft to abut on a door mounting frame or the like around the door. apparatus.