JP2011011881A - Foreign matter mixing preventive structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foreign matter mixing preventive structure capable of restraining failure of an elevator door by foreign matter mixed in a sill groove, by preventing deposition when the foreign matter is mixed in the elevator sill groove.SOLUTION: This foreign matter mixing preventive structure is provided for preventing mixing of the foreign matter in the sill groove 2 for guiding opening-closing of an elevator door 1, and is characterized in that a bottom part of the sill groove 2 is recessed and formed in a recess shape, and a brush 12 contacting with the bottom part of the sill groove 2 is arranged in a lower end part of the elevator door 1, and the brush 12 slides in the sill groove 2 in response to opening-closing motion of the elevator door 1.

Description

  The present invention relates to a structure for preventing foreign matter from entering an elevator sill groove.

  In recent years, there are an increasing number of places where elevators are installed not only for indoor movement but also for outdoor movement. For example, in a station premises where barrier-free is being promoted, when the station platform and the ticket gate are arranged at different levels, they are installed to connect the respective floors.

  In such an elevator installed outdoors, the use environment is severer than that of an elevator installed indoors, and therefore, breakdown is likely to occur. Many of these failures have been found to be door opening and closing problems caused by small foreign objects such as dirt, sand or pebbles entering the sill groove that guides the elevator door and hindering the door movement.

  Usually, in order to prevent such problems, the staff is frequently cleaned by the station staff and cleaning companies. In order to reduce the burden of regular inspection and cleaning, a configuration is proposed in which a brush is attached to the lower end of the elevator door, and the movement of the elevator door is used to sweep the inside of the sill groove to remove foreign matter. (For example, see Patent Documents 1 and 2).

Japanese Patent Laid-Open No. 06-64879 JP 09-188491 A

  However, the above method has the following problems. That is, in the cleaning by a human hand, it is necessary to stop the elevator and perform the work. Therefore, the time in which the elevator can be used decreases, and the burden on the user increases. In addition, even when cleaning is performed manually or by the methods described in Patent Documents 1 and 2, it is difficult to remove small foreign matters such as sand and earth, and there is a problem that they tend to remain in the sill groove. It was. Hereinafter, this problem will be described.

  FIG. 10 shows a commonly known threshold groove 1X. As shown in the figure, in the normally known sill groove 1X, the cross-sectional shape in the width direction is substantially rectangular. In the sill groove 1X having such a shape, small foreign matters such as sand remaining in the sill groove along the corners where the bottom part and the side wall part of the sill groove 1X intersect with each other are accumulated in a streak shape to form the deposit S, It is easy to cause the elevator door opening and closing trouble. Moreover, the deposit S solidified in a streak shape is easily visible and impairs the beauty.

  The above problems are not limited to the elevators installed outdoors as described above. For example, assuming an elevator in a building used on a foot or an elevator installed in a work environment where dust is generated, It can also occur in elevators installed in the.

  The present invention has been made in view of such circumstances, and it is possible to prevent foreign matter from being mixed and accumulated in the elevator sill groove and to suppress the failure of the elevator door due to the foreign matter mixed in the sill groove. It is an object of the present invention to provide a structure for preventing foreign matter from entering.

In order to solve the above problems, the foreign matter mixing prevention structure of the present invention is a foreign matter mixing prevention structure that prevents foreign matter from entering the sill groove of the elevator door, and the bottom of the sill groove is formed in a concave shape. A cleaning member that contacts the bottom of the sill groove is provided at the lower end of the elevator door, and the cleaning member slides in the sill groove as the elevator door opens and closes. It is characterized by.
According to this configuration, since the bottom shape of the sill groove is concave, the foreign matter dropped into the sill groove naturally gathers at the lowest position (deepest position) of the bottom part. The collected foreign matter is swept out by the cleaning member in accordance with the opening / closing movement of the elevator door. Furthermore, since the removal of foreign matter in the sill groove is repeated according to the opening and closing of the elevator door, the inside of the sill groove can be regularly cleaned. Therefore, the foreign matter mixing prevention structure which can remove the foreign matter in the sill groove and can prevent the failure of the elevator well can be obtained.

In this invention, as for the said cleaning member, it is desirable for the shape of the side which contacts the bottom part of the said threshold groove to curve convexly.
According to this configuration, the bottom shape of the sill groove and the end shape of the cleaning member correspond to each other in a complementary manner, so that the cleaning member easily adheres along the inside of the sill groove, and the sill groove by the cleaning member The inside cleaning can be performed efficiently and reliably.

In the present invention, the bottom of the sill groove is provided with a discharge port for discharging foreign matter in the sill groove, and the cleaning member passes over the discharge port as the elevator door opens and closes. It is desirable to be provided at a position.
According to this configuration, foreign matter can be reliably discharged from the discharge port.

In the present invention, it is desirable that the cleaning member is provided at a position overlapping the discharge port in a state where the elevator door is stopped.
According to this configuration, foreign matter can be reliably discharged from the discharge port.

In the present invention, it is desirable that the door contact surface of the elevator door is curved in a convex shape.
According to this configuration, as the elevator door is opened and closed, foreign matter riding on the elevator door path (that is, above the sill groove) can be removed from the path, so it will fall into the sill groove in the future. In this way, it is possible to prevent foreign substances that may cause a failure from being mixed.

In this invention, the said elevator door has a door main body and the auxiliary tool which makes the door contact surface of this door main body convex convex structure, The said door main body and the said auxiliary tool in the lower end part of the said elevator door It is desirable that a protective member is provided so as to overlap the joint portion.
When the convex shape of the door contact surface is formed of a member different from the door, there is a risk that paper scraps will be caught in the joint, making it difficult to remove it from the path, but this configuration protects the joint. Therefore, it is possible to suppress the occurrence of problems caused by forming the convex shape with another member.

In the present invention, the bottom of the sill groove is preferably formed in a concave shape using an external jig.
According to this configuration, it is possible to provide a concave bottom portion that is easy to collect foreign matter even in a generally known sill groove that is formed in a substantially rectangular shape. It can be set as the foreign material mixing prevention structure which can prevent the failure of an elevator.

  ADVANTAGE OF THE INVENTION According to this invention, mixing of the foreign material into a threshold groove can be prevented, and the failure of the elevator door resulting from the foreign material mixed in the threshold groove can be suppressed efficiently.

It is a schematic explanatory drawing explaining an elevator provided with a foreign matter mixing prevention structure. It is a schematic explanatory drawing explaining an elevator provided with a foreign matter mixing prevention structure. It is a schematic explanatory drawing explaining an elevator provided with a foreign matter mixing prevention structure. It is a schematic sectional drawing of the lower end part of an elevator door provided with a foreign matter mixing prevention structure. It is explanatory drawing explaining the function of the foreign material mixing prevention structure of this embodiment. It is explanatory drawing explaining the prior art example which is not provided with the foreign material mixing prevention structure. It is explanatory drawing explaining the function of the foreign material mixing prevention structure of this embodiment. It is the schematic explaining the modification of a brush. It is the schematic explaining the modification of a threshold groove. It is explanatory drawing explaining the subject of a prior art example.

  Hereinafter, a foreign matter mixing prevention structure according to an embodiment of the present invention will be described with reference to FIGS. In all the following drawings, the ratio of dimensions of each component is appropriately changed for easy understanding of the drawings.

  FIG. 1 is a schematic view showing an elevator E equipped with the foreign matter mixing prevention structure of the present embodiment from the floor side, FIG. 1 (a) is a front view, and FIG. 1 (b) is an elevator door 1 stored in a door pocket. It is explanatory drawing which shows the state made. The elevator E provided with the foreign matter mixing prevention structure of the present embodiment is employed in, for example, an elevator provided outdoors in order to connect a station platform and a ticket gate installed on different floors.

  In conventional elevators, sand, earth, pebbles, etc. are likely to accumulate in the sill groove, and when the elevator door is opened and closed, deposits (foreign matter) are caught between the guide shoe and the sill groove, preventing the elevator door from opening and closing. There was a problem of being able to.

  In addition, if dust (foreign matter) such as paper scraps or cigarette butts falls on the sill groove, it may fall into the sill groove and cause a failure that prevents the elevator door from being opened and closed. In addition, since the door is not completely closed by being sandwiched between the door frame and the elevator door, there is a problem in operation that the door is repeatedly opened and closed until the safety device is activated and the door stops.

  In the elevator E having the above-described foreign matter mixing prevention structure, the foreign matter that has fallen into the sill groove 2 is swept away by a brush (not shown) to be described later, Is discharged from the sill groove 2 through the discharge port 21 provided in Further, the foreign matter overlapping the sill groove 2 is well excluded from the path of the door by the convex shape formed by the auxiliary tool 13 on the door contact surface of the elevator door 1, and enters the sill groove 2. Foreign matter can be prevented from falling, and the sandwiching between the elevator door 1 and the door frame 3 can also be prevented.

  The foreign matter mixing prevention structure of the present invention can be employed for both an elevator door (floor door) 1A on the floor side and an elevator door (cage door) 1B on the elevator car side. Hereinafter, each part which comprises a foreign material mixing prevention structure is demonstrated.

  FIG. 2 is a schematic explanatory view for explaining an elevator door 1 and a sill groove 2 having a foreign matter mixing prevention structure. The elevator door 1 is configured to open and close by being guided in the extending direction of the sill groove 2 during operation.

  The elevator door 1 of the present embodiment is provided at the lower end of the door body 10 and is inserted into the sill groove 2 to guide the elevator door 1 when opening and closing, and the door body 10 adjacent to the guide shoe 11. And a brush (cleaning member) 12 that sweeps away foreign matter in the sill groove 2 provided at the lower end of the sill groove 2.

  The brush 12 is provided at a position that passes through the upper portion of the discharge port 21 as the elevator door 1 opens and closes. Furthermore, as shown in FIG. 3, the elevator door 1 may be provided at a position where the elevator door 1 stops at a position overlapping the upper portion of the discharge port 21 in a state where the elevator door 1 is in contact with the door frame 3 and closed. By setting it as such an arrangement | positioning, the removed foreign material is discharged | emitted favorably from the discharge port 21 in an elevator shaft.

  As the brush 12, a known brush for cleaning a sill groove can be used as long as it has a size and characteristics that do not hinder the opening / closing operation of the elevator door 1. Further, as described later, it is preferable to use a brush having a configuration suitable for the foreign matter mixing prevention structure of the present invention.

  A semi-cylindrical auxiliary tool 13 is attached to the door contact surface of the door body 10, and the door contact surface 13a of the elevator door 1 is curved in a convex shape. Since the auxiliary tool 13 has flame retardancy that satisfies the requirements of the Building Standard Law and is preferably easy to mold, it is formed using a flame retardant resin material.

  The “flame retardant resin material” referred to here may be a resin alone or a composite material mixed with a flame retardant as long as the flame retardant property satisfying the requirements of the Building Standard Law can be realized. If an outdoor specification is assumed, a resin material having weather resistance is more preferable. Furthermore, when a rubber-like material is used as the material for forming the auxiliary tool 13, a function as a cushion can be provided.

  A protective member 15 is provided at the lower end of the door main body 10 so as to partially overlap with the joint portion 14 between the door main body 10 and the auxiliary tool 13. Here, a brush-like member is employed as the protection member 15. This is an auxiliary cleaning member provided in order to prevent foreign matter such as paper scraps from being caught in the gap between the joint portions 14. If the joint portion 14 can be protected, it is not necessarily a brush-like member. Need not be.

  On the other hand, the threshold groove 2 of the present embodiment is formed such that the bottom of the threshold 2A is recessed in a concave shape. The sill groove 2 of the present embodiment employs a shape in which the bottom is curved and U-shaped. Since the bottom portion is recessed in a concave shape, a large amount of foreign matter such as sand that has fallen into the sill groove 2 is accumulated inside the width direction inside the bottom portion, and is difficult to deposit outside the width direction.

  4A and 4B are schematic cross-sectional views in the width direction at the lower end portion of the elevator door 1. FIG. 4A is a cross-sectional view at a position overlapping the brush 12, and FIG. 4B is a cross-sectional view at a position overlapping the guide shoe 11. It is.

  As shown in FIG. 4A, the brush 12 is attached to a support member 16 disposed on the inner wall of the elevator door 1 inside the elevator door 1 that is provided in a hollow space. The brush 12 may be bonded and fixed to the support member 16, but it is desirable to use a method such as screwing so that the brush 12 can be easily replaced when the brush 12 is consumed. Here, screws 17 are used for screwing.

  The width W1 of the threshold groove 2 of this embodiment and the width W2 of the bristle 12a of the brush 12 have a relationship of W1> W2. Such brush bristles 12a are selectively planted at positions overlapping the deepest part of the sill groove 2 in the width direction of the sill groove 2.

  As shown in FIG. 4B, the guide shoe 11 is also screwed to a support member 16 provided inside the elevator door 1 via a jig 18. A tapered surface 11 a is provided at the lower end of the guide shoe 11 at the end in the width direction. Therefore, the insertion depth H of the guide shoe 11 into the sill groove 2 is secured while preventing interference with the bottom of the sill groove 2.

  Next, functions of the foreign matter mixing prevention structure will be described in order with reference to FIGS. The foreign matter mixing prevention structure of the present invention can be broadly divided into a configuration in which foreign matter that has fallen into the sill groove 2 is prevented from being accumulated for a long period of time, and is effectively discharged out of the sill groove 2. And a configuration that prevents a problem that may occur in the threshold groove 2 in the future. Hereinafter, it demonstrates in order.

  FIG. 5 is an explanatory diagram for explaining the function of the foreign matter mixing prevention structure in the threshold groove 2 of the present embodiment. The figure is a cross-sectional view of the threshold groove 2 in the width direction.

  First, as shown to Fig.5 (a), since the bottom part of the threshold groove 2 is exhibiting U shape, the depth of a groove | channel changes with places. When foreign matter G such as sand or pebbles falls into the sill groove 2 having such a bottom, the foreign matter G naturally collects and accumulates in the deepest part of the bottom. In the case of the sill groove 2 having a U-shaped bottom, the foreign matter G is deposited near the center of the sill groove 2 in the width direction, and the foreign matter G is less likely to be deposited near both ends of the sill groove 2 in the width direction. That is, due to the bottom shape of the sill groove 2, the amount of foreign matter G deposited is greater near the center than at both ends in the width direction of the sill groove 2.

  Next, as shown in FIG. 5 (b), as the elevator door 1 is opened and closed, the interior of the sill groove 2 is swept away by the brush 12 provided at the lower end of the elevator door 1. Since the bristle 12a of the brush 12 is planted at a position overlapping the deepest part of the threshold groove 2, the position corresponding to the position where a large amount of foreign matter G accumulates is selectively swept away. Moreover, since the bristle 12a is selectively planted, the force transmitted to the bristle 12a by the movement of the elevator door 1 is concentrated in a limited width compared to the case where the bristle is planted over the entire width direction of the sill groove. Therefore, for example, even if a relatively large foreign object G has fallen into the sill groove 2, it can be satisfactorily removed.

  In addition, if the flocking position (width) of the bristles 12a is limited, it is considered that the foreign matter G at a position that does not overlap with the bristles 12a remains without being removed. In order to keep sweeping away the foreign matter in the sill groove 2 as long as it continues to be used, it is eventually discharged out of the sill groove 2. Further, the vibration due to the opening and closing of the elevator door 1 is caused by wind and rain, etc., so that the foreign matter G remaining in the sill groove 2 gradually moves and accumulates at the deepest part of the sill groove 2. Will be implemented.

  In this way, in the sill groove 2, the foreign matter G dropped into the groove is efficiently gathered due to the shape of the bottom of the sill groove 2, and the collected foreign matter G is swept away by the brush 12 to remove the foreign matter G. Efficiently.

  6 and 7 are explanatory views illustrating the function of the foreign matter mixing prevention structure outside the sill groove 2 of the present embodiment. FIG. 6 is a schematic view of the sill groove 2 observed from above. FIG. 6 shows a conventional elevator door having no foreign matter mixing prevention structure, and FIG. 7 shows an elevator door according to this embodiment having a foreign matter prevention structure. .

  As shown in FIG. 6, in the conventional elevator door 1 </ b> X, the door contact surface 13 </ b> X has a substantially rectangular cross-sectional shape, and has a plane that faces the traveling direction of the elevator door 1 </ b> X. First, let us consider a case where dust D has fallen on the sill groove 2 where the elevator door 1X reciprocates so as to overlap the sill groove 2.

  When the elevator door 1X is closed, the door contact surface 13a and the dust D come into contact with each other. When the dust D is pushed by the door contact surface 13X, the force F applied to the dust D from the elevator door 1X always coincides with the traveling direction of the elevator door 1X, so that the dust D is unlikely to come off from the course of the elevator door 1X. Therefore, the dust D is likely to be sandwiched between the elevator door 1X and the door frame 3.

  In such a case, with the opening and closing of the elevator door 1X, the dust D falls into the sill groove 2, preventing the opening and closing of the elevator door 1, and may cause a failure. In addition, by being sandwiched between the door frame 3 and the elevator door 1, the door may not be completely closed, and there may be a problem in operation that the safety device is activated and repeatedly opened and closed until the door stops.

  On the other hand, as shown in FIG. 7, in the elevator door 1 of this embodiment in which the auxiliary tool 13 is provided, the door contact surface 13a has a cross-sectional shape curved in a convex shape. For this reason, when the elevator door 1 is closed, the door contact surface 13a and the dust D come into contact with each other at a point or a line. When the dust D is pressed, the door door 13a is moved around the center of gravity of the dust and deviates from the course of the elevator door 1. (FIG. 7A).

  Furthermore, as the dust D moves out of the path of the elevator door 1, the contact point between the door contact surface 13a and the dust D changes, so that the force F is applied to the dust D from the elevator door 1 while changing its direction. Therefore, the dust D can be excluded from the course of the elevator door 1 having the foreign matter mixing prevention structure. Accordingly, it is possible to prevent future dust D from falling into the sill groove 2 and to prevent the dust D from being caught between the elevator door 1 and the door frame 3 (FIG. 7B).

  According to the foreign matter mixing prevention structure configured as described above, the inside of the sill groove 2 can be regularly cleaned, and the fall of dust into the sill groove 2 can also be prevented, so that the sill groove It is possible to prevent foreign matter from entering the interior and to prevent the elevator from being broken.

  In the present embodiment, the brush is used as the cleaning member, but the present invention is not limited to this. For example, a spatula-shaped member formed of a felt material, a sponge-like porous material, rubber or the like may be used as the cleaning member. Even in that case, it is desirable that the shape of the cleaning member on the side in contact with the bottom of the sill groove be curved in a convex shape corresponding to the bottom shape of the sill groove.

  Moreover, in this embodiment, although the brush 12 planted in the position corresponding to the deepest part of the threshold groove 2 was used, it is not restricted to this. It is apparent that the brush can be deformed from the gist of the present invention that the foreign matter G deposited on the bottom of the recessed groove 2 is efficiently swept out. FIG. 8 is a schematic diagram showing a modification of the brush, and corresponds to the brush 12 shown in FIG.

  In the brush 121 shown in FIG. 8A, the bristle 121a is not selectively planted in correspondence with the deepest portion of the sill groove, but is spread in the width direction of the sill groove. Furthermore, the bristle 121a overlapping near the center of the sill groove is densely planted, and the brush bristle 121a overlapping near the end of the sill groove is loosely implanted.

  In such a configuration, the rigidity of the entire bristle 121a becomes high near the center due to the density difference of the bristle 121a, and therefore, the vicinity of the center of the sill groove where a large amount of foreign matter is accumulated can be swept away satisfactorily. Further, since the rigidity of the entire bristle 121a is reduced in the vicinity of the end, the bristle 121a is curved along the wall surface of the sill groove and can be swept closely along the shape of the sill groove. Therefore, when the brush 121 is used, it is possible to satisfactorily sweep out the entire inside of the sill groove.

  In the brush 122 shown in FIG. 8B, two types of brush hairs 122a and 122b having different rigidity are used. Brush hair 122a having relatively high rigidity is planted near the center of the sill groove, and brush hair 122b having relatively low rigidity is planted near the end of the sill groove.

  In such a configuration, the vicinity of the center of the sill groove where a large amount of foreign matter is accumulated is satisfactorily swept away by the brush hair 122a having high rigidity, and the brush hair 122b having low rigidity is closely adhered along the shape of the sill groove near the end. Can be swept away. Therefore, the brush 122 can sweep the entire inside of the sill groove well.

  In the brush 123 shown in FIG. 8C, the length of the bristle 123a is changed in the width direction of the sill groove, and the brush bristle 123a is long near the center of the sill groove and relatively short near the end of the sill groove. It is flocked. In such a brush 123, since the bristle 123a has a convex shape corresponding to the concave shape of the bottom of the sill groove, the brush bristle 123a can be well adhered to the bottom of the sill groove and swept away.

  Further, in the present embodiment, the bottom of the sill groove 2 is U-shaped, but by forming a sill groove recessed in a concave shape, the distribution of the amount of foreign matter that accumulates on the bottom in the width direction of the sill groove. It is clear that the bottom shape of the sill groove can be deformed from the gist of the present invention in which the foreign matter is collected near the center of the sill groove. For example, the bottom shape of the sill groove 2 is not limited to the above-described U shape as long as it is a concave shape, and the bottom of the sill groove may be configured to be recessed in a V shape or a polygonal shape.

  In the present embodiment, the bottom shape of the sill groove 2 is such that the sill 2A is formed in a U-shape, but the inside of the sill groove having a generally known rectangular cross-sectional shape is known. Alternatively, it may be formed by being buried using a resin or the like. Moreover, it is good also as installing the jig | tool which changes a bottom part shape into a desired shape in a groove | channel, and forming the bottom part shape of a sill groove.

  For example, using a jig 23 that changes the cross-sectional shape of the sill groove to a substantially hexagonal shape as shown in FIG. 9 (a), as shown in FIG. 9 (b), the inside of the sill groove 2X having a substantially rectangular cross-sectional shape. By fixing with a screw 25, a bottom-shaped sill groove recessed in a concave shape may be formed. Of course, a fixing method such as adhesion or welding may be selected instead of screwing. Furthermore, the cross-sectional shape of the jig 23 is an example, and it goes without saying that various cross-sectional jigs can be selected in accordance with the desired bottom shape of the sill groove.

  Moreover, in this embodiment, although the auxiliary tool 13 is attached to the door main body 10 and the door contact surface 13a of the elevator door 1 is curved by using the shape of the auxiliary tool 13, the auxiliary tool 13 is used. The door contact surface of the door main body may be formed directly in a convex shape without using. In that case, since the coupling | bond part 14 of the door main body 10 and the auxiliary tool 13 does not arise, it becomes unnecessary to provide the protection member 14. FIG.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but it goes without saying that the present invention is not limited to such examples. Various shapes, combinations, and the like of the constituent members shown in the above-described examples are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Elevator door 2 ... Sill groove 11 ... Guide shoe 12, 121-123 ... Brush (cleaning member)
13 ... Auxiliary tool 13a ... Door contact surface 21 ... Discharge port F ... Foreign matter

Claims (7)

A foreign matter mixing prevention structure that prevents foreign matter from entering the threshold groove that guides the opening and closing of the elevator door,
The bottom of the sill groove is recessed in a concave shape,
A cleaning member in contact with the bottom of the sill groove is provided at the lower end of the elevator door,
The foreign matter mixing prevention structure characterized in that the cleaning member slides in the sill groove as the elevator door opens and closes.   2. The foreign matter mixing prevention structure according to claim 1, wherein a shape of the cleaning member on a side in contact with a bottom portion of the sill groove is convexly curved. At the bottom of the sill groove, a discharge port for discharging foreign matter in the sill groove is provided,
3. The foreign matter mixing prevention structure according to claim 1, wherein the cleaning member is provided at a position that passes over the discharge port as the elevator door opens and closes.   The foreign matter mixing prevention structure according to claim 3, wherein the cleaning member is provided at a position overlapping the discharge port when the elevator door is stopped.   5. The foreign matter mixing prevention structure according to claim 1, wherein a door contact surface of the elevator door is curved in a convex shape. The elevator door has a door body and an auxiliary tool having a convex curved structure on the door contact surface of the door body,
The foreign matter mixing prevention structure according to claim 5, wherein a protective member is provided so as to overlap a joint portion between the door main body and the auxiliary tool at a lower end portion of the elevator door.   The foreign matter mixing prevention structure according to any one of claims 1 to 6, wherein a bottom portion of the sill groove is formed in a concave shape using an external jig.

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