JP6947693B2 - Passenger conveyor - Google Patents

Description

The present invention relates to a passenger conveyor.

As a technique related to a passenger conveyor, there is one disclosed in Japanese Patent Application Laid-Open No. 2017-75003 (Patent Document 1). According to this publication, "The escalator is erected with a slight gap on the side of the tread plate 3 which is connected endlessly and circulates between the entrances 1 and 2 and extends along the movement direction of the tread plate 3. The existing skirt guard 4 is provided .... Further, a dress guard 7 is attached to the side surface of the skirt guard 4 on the side where the tread plate 3 is located .... The dress guard 7 is along the moving direction of the tread plate 3. It has a base 7a extending from the base 7a, a flexible body attached to the base 7a and having a tip protruding toward the tread plate 3, for example, a brush 7b, and an engaging body 10 for engaging and fixing the base 7a to the skirt guard 4. "The dress guard is fixed to the tread side of the skirt guard to prevent passengers' clothing etc. from being caught between the skirt guard and the tread." ..

JP-A-2017-75003

However, in a passenger conveyor where the height position of the treads fluctuates between the lower floor and the upper floor, the treads move only in the horizontal direction in the vicinity of the entrance / exit, whereas the lower floor and the upper floor move. At the slope between the floor, the treads move horizontally and upwards or downwards. Therefore, the distance between the dress guard provided along the moving direction of the tread plate and the upper surface of the tread plate is narrower in the inclined portion than in the vicinity of the entrance / exit.

As a result, for example, when the wheels of the carry bag carried by the passenger as baggage are placed between the treads of the tread and the dress guard near the entrance, the wheels are placed between the treads of the tread and the dress guard at the inclined portion. There was a risk of being pinched.

Therefore, an object of the present invention is to provide a passenger conveyor capable of preventing an object from being pinched between the tread surface of a step, which is a tread plate, and a dress guard at an inclined portion between the lower floor and the upper floor. And.

In order to solve the above problems, for example, the configuration described in the claims is adopted.
The present application includes a plurality of means for solving the above problems. For example, a pair of boarding / alighting paths provided at different height positions and a pair of stepping treads connected in an endless manner are combined with the pair of boarding / alighting paths. A traveling path to be circulated between the two, a pair of cover members erected on both sides of the pair of boarding / alighting paths and both sides of the traveling path along the moving direction of the traveling path, and the traveling path side. In a passenger conveyor provided with a dress guard provided at a predetermined height of the cover member in a protruding state, the dress is provided on both sides of a horizontal region including a pair of boarding / alighting paths and a region in which the traveling path moves horizontally. An example is a configuration in which a guide member projecting from the cover member toward the horizontal region is provided at a height position between the guard and the tread surface of the step.

According to the present invention, it is possible to provide a passenger conveyor capable of preventing an object from being pinched between a step tread, which is a tread plate, and a dress guard at an inclined portion between a lower floor and an upper floor. can.
Issues, configurations and effects other than those described above will be clarified by the description of the embodiments on the following side.

It is a front view which shows the appearance structure of the passenger conveyor which concerns on embodiment. It is a figure explaining the drive structure of the passenger conveyor which concerns on embodiment. It is a side view of the main part of the passenger conveyor which concerns on embodiment. It is a block diagram of the main part of the passenger conveyor which concerns on embodiment. It is a perspective view which shows the structure of the guide member provided in the passenger conveyor which concerns on embodiment. It is a block diagram of the main part of the passenger conveyor explaining the effect of embodiment. It is a block diagram of the main part of the passenger conveyor which becomes a comparative example. It is a side view of the main part of the passenger conveyor which becomes a comparative example. It is a side view of the main part of the passenger conveyor which shows the modification 1 of embodiment. It is a side view of the main part of the passenger conveyor which shows the modification 2 of embodiment. It is a side view of the main part of the passenger conveyor which shows the modification 3 of embodiment.

Hereinafter, the configuration of the passenger conveyor according to the embodiment and its modified example will be described in detail with reference to the drawings.

<< Embodiment >>
FIG. 1 is a front view showing an external configuration of the passenger conveyor 1 according to the embodiment. The passenger conveyor 1 shown in this figure is provided so as to be bridged between the upper floor and the lower floor of the building structure, and carries passengers in the height direction. The passenger conveyor 1 of such an embodiment includes a traveling path 2, a boarding / alighting path 3a, 3b, a balustrade 4, a handrail 5, an inner cover member 6, an outer cover member 7, a dress guard 8, and a guide member 9. .. Hereinafter, these main components constituting the passenger conveyor 1 of the embodiment will be described in order from the traveling path 2.

<Runway 2>
The traveling path 2 is composed of a plurality of steps 21, and the step 21 connected in an endless manner is circulated and moved between the pair of boarding / alighting paths 3a and 3b. The step 21 has a tread surface 21a on which the passengers board, and is connected in an endless manner in a state of being arranged in the carrying direction of the passengers, and the connected step rows form a conveyor. Such a step 21 is configured to be hung between the lower floor and the upper floor of the building structure in the connecting direction and rotate in the connecting direction.

Here, FIG. 2 shows a diagram illustrating a drive configuration of the passenger conveyor 1 according to the embodiment. As shown in this figure, the passenger conveyor 1 includes a frame body 100 having a truss structure that is hung between the lower floor 200a and the upper floor 200b of the building structure. The frame body 100 supports the above-mentioned constituent members and internally accommodates a drive mechanism for driving the step 21.

The frame 100 includes a lower horizontal portion 100a horizontally supported with respect to the lower floor 200a, an upper horizontal portion 100b horizontally supported with respect to the upper floor 200b, and a lower horizontal portion 100a and an upper horizontal portion. It has an inclined portion 100c provided between the 100b and the 100b. The lower horizontal portion 100a accommodates the lower sprocket 101. The upper horizontal portion 100b accommodates the upper sprocket 102 and the sprocket drive machine 103 for rotationally driving the upper sprocket 102. The inclined portion 100c accommodates a step chain 104 wound around a lower sprocket 101 and an upper sprocket 102 whose rotation axis is kept horizontal.

The step 21 that constitutes a series of conveyors is fixedly provided to the step chain 104. As a result, when the sprocket drive 103 rotates the upper sprocket 102, the step chain 104 wound around the upper sprocket 102 and the lower sprocket 101 rotates. Then, the step 21 fixed to the step chain 104 runs between the lower floor 200a and the upper floor 200b along the shape of the frame body 100.

FIG. 3 is a side view of a main part of the passenger conveyor 1 according to the embodiment, in which a portion of the passenger conveyor 1 including a traveling path 2 on the lower floor 200a side and a boarding / alighting path 3a is sandwiched between a pair of balustrades 4. It is a view seen from the position.

As shown in FIGS. 2 and 3, in the step 21 traveling as described above, the tread 21a is directed upward between the boarding / alighting path 3a of the lower floor 200a and the boarding / alighting path 3b of the upper floor 200b. It is kept horizontal in the state of being raised. As a result, between the boarding / alighting path 3a and the boarding / alighting path 3b, the tread surface 21a of step 21 is kept horizontal, and the vehicle travels from the lower floor 200a toward the upper floor 200b or vice versa. It becomes the traveling path 2 to be carried out.

The travel path 2 has a region in the vicinity of the boarding / alighting paths 3a and 3b where the step 21 is maintained at substantially the same height as the boarding / alighting paths 3a and 3b and moves horizontally. This region, together with the boarding / alighting paths 3a and 3b, constitutes a horizontal region [A1]. Further, in FIG. 3, only the horizontal region [A1] on the lower floor 200a side is shown, but the same horizontal region [A1] as on the lower floor 200a side is also provided on the upper floor 200b side. The runway 2 has an inclined region [A2] in which the step 21 moves obliquely upward or obliquely downward between these horizontal regions [A1].

<Getting on and off routes 3a, 3b>,
The boarding / alighting paths 3a and 3b are passages provided at both ends in the traveling direction in the traveling path 2 configured by step 21. These boarding / alighting paths 3a and 3b are provided at different height positions of the building structure, and are provided here on the lower floor 200a and the upper floor 200b side. These boarding / alighting paths 3a and 3b are provided above the lower horizontal portion 100a and the upper horizontal portion 100b of the frame body 100.

<Baluster 4>
As shown in FIGS. 1 to 3, the balustrade 4 is a fence-like body for preventing falls provided on both sides of step 21. These balustrades 4 are extended along the connecting direction of step 21 on both sides of step 21, and are erected from between the inner cover member 6 and the outer cover member 7 (see FIG. 1). It is provided in a closed state. These balustrades 4 extend from both sides of step 21 to both sides of the boarding / alighting paths 3a and 3b, and are provided along the lower horizontal portion 100a, the upper horizontal portion 100b, and the inclined portion 100c of the frame body 100. It has become the one that was done.

<Handrail 5>
The handrail 5 is an endless one attached along the peripheral edge of each balustrade 4 in a state of being supported by each balustrade 4. Each of these handrails 5 is rotated in the same direction as step 21 in synchronization with step 21 by the handrail drive device 105 (see FIG. 2) housed inside the inner cover member 6 and the outer cover member 7. do.

<Inner cover member 6>
As shown in FIG. 1, the inner cover member 6 is provided together with the outer cover member 7 in a state of covering the lower part of the balustrade 4, a part of the handrail 5 covering the balustrade 4, and the handrail driving device 105 (see FIG. 2). It is a decorative board material. Such an inner cover member 6 is on the side sandwiched between the pair of balustrades 4, and extends along the moving direction of the traveling path 2 on both sides of the traveling path 2.

These inner cover members 6 are composed of a skirt guard 6a standing vertically on both sides of the traveling path 2 and an inner deck cover 6b arranged so as to be inclined toward the balustrade 4 side from the upper end edge of the skirt guard 6a. Has been done. The skirt guard 6a is provided close to the step 21 within a range that does not affect the running of the step 21.

Further, the inner cover member 6 as described above is extended from both sides of the traveling path 2 to both sides of the boarding / alighting paths 3a and 3b while maintaining its shape.

<Outer cover member 7>
The outer cover member 7 is a decorative board material provided together with the inner cover member 6 in a state of covering the lower part of the balustrade 4, a part of the handrail 5 covering the balustrade 4, and the handrail driving device 105 (see FIG. 2). Such an outer cover member 7 extends along the moving direction of the traveling path 2 on the outside of the pair of balustrades 4. Further, the outer cover member 7 as described above is further extended on both sides of the boarding / alighting paths 3a and 3b in accordance with the inner cover member 6.

<Dress guard 8>
The dress guard 8 is a member for preventing the passenger who boarded the step 21 from getting too close to the inner cover member 6, and the hem of the passenger's clothes is sandwiched between the step 21 and the inner cover member 6. To prevent it from being damaged. Such a dress guard 8 projects toward the traveling path 2 side (that is, the step 21 side) with respect to the skirt guard 6a standing vertically on both sides of the step 21 among the inner cover members 6. It is a member attached to.

As shown in FIG. 3, the dress guard 8 is attached along the upper end edge of the skirt guard 6a at a height position that does not affect the running of step 21. Here, a series of dress guards 8 are provided on the traveling path 2 between the boarding / alighting path 3a on the lower floor 200a side and the boarding / alighting path 3b of the upper floor 200b (not shown here). do. The dress guard 8 may be extended to the side of the boarding / alighting paths 3a and 3b, or may be divided into a plurality of parts.

FIG. 4 is a configuration diagram of a main part of the passenger conveyor 1 according to the embodiment, and is a diagram corresponding to a cross section of an arbitrary portion in a direction perpendicular to the moving direction of the traveling path 2. As shown in this figure, the dress guard 8 is, for example, a base material 8a fixed to the skirt guard 6a in a state of protruding toward the traveling path 2 side, and a flexible body protruding from the base material 8a toward the step 21 side. It is composed of 8b. The flexible body 8b is, for example, a brush-like one, but is not limited thereto.

<Guide member 9>
As shown in FIGS. 3 and 4, the guide member 9 is an inner cover member at a height position between the dress guard 8 and the tread surface 21a of the step 21 on both sides of the horizontal region [A1] on the passenger conveyor 1. It is provided so as to protrude from the skirt guard 6a of 6. Here, as an example, it is assumed that the guide member 9 is provided at a position corresponding to both sides of the boarding / alighting path 3a so as to project toward the boarding / alighting path 3a. It is assumed that such a guide member 9 is similarly provided on both sides of the boarding / alighting path 3b of the upper floor 200b shown in FIGS. 1 and 2. By providing such guide members 9 on both sides of the boarding / alighting paths 3a and 3b, before the passengers' cargo boarding on the step 21 of the traveling path 2 from the boarding / alighting path 3a gets on the step 21 of the traveling path 2. In addition, the cargo on the boarding / alighting route 3a can be guided toward the center side deviated from the gap between the dress guard 8 and the step 21.

As shown in FIG. 4, the protruding height [H1] of such a guide member 9 is higher than the protruding height [H2] of the base material 8a of the dress guard 8. As a result, the effect of preventing the object from being caught in the gap between the dress guard 8 and the step 21 as described later is enhanced. Further, the protruding height [H1] of the guide member 9 is preferably lower than the protruding height of the entire dress guard 8 including the flexible body 8b, which prevents the guide member 9 from boarding the passengers on the passenger conveyor 1. It is kept in a size that never happens.

FIG. 5 is a perspective view showing the configuration of the guide member 9 provided on the passenger conveyor 1 according to the embodiment. As shown in FIGS. 5 and 3 and 4, the guide member 9 is a member having a semi-cylindrical outer shape obtained by dividing a cylindrical shape including an elliptical column by a plane along the axial direction. Such a guide member 9 has two semi-cylindrical semicircles as bottom surfaces 91 and 92. Further, in the guide member 9, a portion of the semi-cylindrical side peripheral surface formed of a flat surface constitutes a mounting surface 93 for the skirt guard 6a, and a portion formed of the other curved surface projects toward the step 21 side. It constitutes a protruding surface 94. Since the guide member 9 has a structure in which the protruding surface 94 having such a curved surface is projected toward the boarding / alighting path 3a, the passengers and their transported objects boarding the step 21 from the boarding / alighting path 3a can be the guide member 9. It is possible to suppress the impact when it comes into contact with. Therefore, it is possible to prevent passengers from being injured by the guide member 9 and damage to the transported object.

Further, such a semi-cylindrical guide member 9 is attached to the skirt guard 6a while keeping the semi-cylindrical shaft substantially horizontal. In the guide member 9 attached to the skirt guard 6a in this way, the bottom surface 91 arranged toward the side opposite to the traveling path 2 is formed in a forward taper shape that inclines toward the traveling path 2 side. There is. That is, the guide member 9 has a shape in which the protruding height increases from the boarding / alighting path 3a toward the traveling path 2 side, and the thickness between the bottom surface 91 and the mounting surface 93 increases from the boarding / alighting path 3a side to the traveling path 2 side. The shape gradually increases toward the side. Since the guide member 9 has such a shape, the passenger's cargo that gets on the step 21 of the traveling path 2 from the boarding / alighting path 3a is guided to the tapered bottom surface 91 and smoothly moves toward the center side of the step 21. It is extruded and can prevent the transported object from being caught between the tread surface 21a of step 21 and the dress guard 8. The bottom surface 92 facing the traveling path 2 side may have the same tapered shape, or may be a surface perpendicular to the mounting surface 93.

The height position of the guide member 9 having the shape as described above with respect to the skirt guard 6a may be the height position between the dress guard 8 and the tread surface 21a of the step 21, for example, the dress guard 8 and the step. It is assumed that the position is intermediate with the tread surface 21a of 21 in the height direction. Further, the guide member 9 is attached to the skirt guard 6a while keeping the semicircular inner shaft substantially horizontal, but the guide member 9 is attached at an angle within a range that does not affect the running of step 21. You may be.

Further, such a guide member 9 is preferably made of an elastic material such as a hollow rubber material, whereby a person or an object boarding the boarding / alighting path 3a to step 21 can be referred to by the guide member 9. It is possible to suppress the impact when it comes into contact with. Therefore, it is possible to prevent passengers from being injured by the guide member 9 and damage to the transported object.

<Effect of embodiment>
The passenger conveyor 1 of the embodiment described above is projected from the skirt guard 6a of the inner cover member 6 toward the boarding / alighting paths 3a and 3b, and is located at a height position between the dress guard 8 and the tread surface 21a of the step 21. The guide member 9 is provided. As a result, it is possible to prevent an object from being pinched between the dress guard 8 and the tread surface 21a in step 21.

Here, FIG. 6 shows a configuration diagram of a main part of the passenger conveyor 1 for explaining the effect of the embodiment. This figure corresponds to a cross section of an arbitrary portion in a direction perpendicular to the moving direction of the traveling path 2. As shown in FIG. 6 and FIG. 3 above, for example, when a passenger boarding the passenger conveyor 1 of the embodiment is carrying the carry bag 300, the carry bag 300 is carried from the boarding / alighting path 3a to the tread 21a of step 21. The wheels 301 of the bag 300 are directly transferred. At this time, the wheel 301 of the carry bag 300 is pushed out by the guide member 9 toward the center side of the boarding / alighting path 3a, that is, the center side of the step 21, and the carry bag 300 is placed between the dress guard 8 and the tread surface 21a of the step 21. It is possible to prevent the wheels 301 from being arranged.

As shown in FIG. 3, the distance between the tread surface 21a of step 21 and the dress guard 8 is the distance [d1] in the horizontal region [A1] of the traveling path 2 and the distance [d2] in the inclined region [A2]. Will be different values. That is, the distance [d2] in the inclined region [A2] is once wider than the interval [d1] in the horizontal region [A1], but is the narrowest in the region where the inclined angle of the traveling path 2 is constant. The interval is [d2']. In the drawing, the interval in the center of the traveling direction of step 21 is shown.

Then, according to the configuration of the present embodiment, as described above, when the wheel 301 of the carry bag 300 is transferred from the boarding / alighting path 3a to the tread surface 21a of the step 21, the dress guard 8 and the tread surface 21a of the step 21 It is possible to prevent the wheels 301 from being arranged between them. Therefore, in a state where the step 21 on which the wheel 301 is placed is transported to the inclined region [A2], the tread surface 21a of the step 21 in which the interval [d2] is narrower than the interval [d1] in the horizontal region [A1]. It is possible to prevent the wheel 301 from being pinched between the dress guard 8 and the dress guard 8.

Here, FIG. 7 shows a configuration diagram of a main part of the conventional passenger conveyor 1'which is a comparative example, and FIG. 8 shows a side view of a main part of the conventional passenger conveyor 1'which is a comparative example. As shown in these figures, in the conventional passenger conveyor 1'without a guide member, when the wheel 301 of the carry bag 300 is transferred from the boarding / alighting path 3a to the tread surface 21a of the step 21, the dress guard 8 is used. There is a risk that the wheel 301 will be placed between the tread surface 21a of step 21 and the tread surface 21a of step 21. In this case, in a state where the step 21 on which the wheel 301 is placed has moved to the inclined region [A2], the wheel 301 is sandwiched between the tread surface 21a of the step 21 in which the interval [d2] is narrowed and the dress guard 8. It will end up.

On the other hand, according to the passenger conveyor 1 of the embodiment described with reference to FIGS. 1 to 6, it is possible to prevent an object such as a wheel 301 from being caught between the tread surface 21a of step 21 and the dress guard 8. It is possible to prevent damage to the object due to this, overturning due to the reaction, and further stop of the passenger conveyor 1.

<< Modification 1 >>
FIG. 9 is a side view of a main part of the passenger conveyor 1a showing the first modification of the embodiment. The passenger conveyor 1a shown in this figure is different from the passenger conveyor of the embodiment in the arrangement position of the guide member 9a, and the other configurations are the same. That is, the guide member 9a is not limited to being arranged only on both sides of the boarding / alighting path 3a as long as it is in the horizontal region [A1] on the passenger conveyor 1, and may extend to both sides of the traveling path 2. good. Further, the guide member 9a may be arranged only on both sides of the horizontal region [A1] in the traveling path 2. Further, as long as it does not affect the traveling in step 21, it may be extended from the horizontal region [A1] to the end of the inclined region [A2] in the traveling path 2.

By providing the guide member 9a in a wider range in this way, the wheels 301 of the carry bag 300 transferred from the boarding / alighting path 3a to the tread surface 21a of the step 21 step with the dress guard 8 on the step 21. It is possible to prevent the vehicle from being pushed between the tread surface 21a and the tread surface 21a. This makes it possible to more reliably prevent an object such as a wheel 301 from being pinched between the tread surface 21a of step 21 and the dress guard 8.

<< Modification 2 >>
FIG. 10 is a side view of a main part of the passenger conveyor 1b showing the second modification of the embodiment. The passenger conveyor 1b shown in this figure is different from the passenger conveyor of the embodiment in that a plurality of guide members 9b are provided on the skirt guard 6a, and the other configurations are the same. That is, the plurality of guide members 9b are provided on both sides of the boarding / alighting path 3a and on the traveling paths 2 on both sides of the step 21. Further, the guide member 9b may be provided not only in the horizontal region [A1] in the traveling path 2 but also in the end portion of the inclined region [A2] as long as it does not affect the traveling in step 21. Each shape of the guide member 9b may be the same as that of the guide member 9 described in the embodiment.

With such a configuration, the guide member 9b can be arranged in a wider range of the traveling path 2 without affecting the traveling in step 21. This makes it possible to more reliably prevent an object such as a wheel 301 from being pinched between the tread surface 21a of step 21 and the dress guard 8.

<< Modification 3 >>
FIG. 11 is a side view of a main part of the passenger conveyor 1c showing the third modification of the embodiment. The passenger conveyor 1c shown in this figure is different from the passenger conveyor of the embodiment in the shape of the guide member 9c, and other configurations are the same. That is, the guide member 9c may have a hemispherical shape.

With the guide member 9c having such a shape, the guide member 9c can be provided to the skirt guard 6a in a wider range that does not affect the running of the step 21. As a result, it is possible to more reliably prevent an object such as a wheel 301 from being pinched between the tread surface 21a of step 21 and the dress guard 8.

The present invention is not limited to the above-described embodiments and modifications, and further includes various modifications. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations. Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Further, it is possible to add / delete / replace other configurations with respect to a part of the configurations of each embodiment.

1,1a, 1b, 1c ... Passenger conveyor 2 ... Running path 21 ... Step 21a ... Tread 3a, 3b ... Boarding / alighting path 6 ... Inner cover member 6a ... Skirt guard 6b ... Inner deck cover 7 ... Outer cover member 8 ... Dress guard 8a ... Base material 8b ... Flexible body 9, 9a, 9b, 9c ... Guide member 93 ... Mounting surface (flat surface)
[A1] ... Horizontal region [H1] ... Protruding height of the guide member [H2] ... Protruding height of the base material

Claims (8)

A pair of boarding / alighting routes provided at different heights,
A traveling path for circulating the treads of steps connected in an endless manner between the pair of boarding / alighting paths, and a traveling path.
A pair of cover members erected on both sides of the pair of boarding / alighting paths and on both sides of the traveling path along the moving direction of the traveling path.
In a passenger conveyor provided with a dress guard provided at a predetermined height of the cover member in a state of projecting toward the traveling path side.
On both sides of the horizontal region including the pair of boarding / alighting paths and the region where the traveling path moves horizontally, the cover member projects toward the horizontal region at a height position between the dress guard and the tread surface of the step. the guide member is provided,
The dress guard includes a base material fixed to the cover member and a flexible body protruding from the base material toward the traveling path side.
A passenger conveyor in which the protruding height of the guide member is higher than the protruding height of the base material. The passenger conveyor according to claim 1, wherein the guide member is provided on both sides of the boarding / alighting path in the horizontal region. The passenger conveyor according to claim 1 or 2 , wherein the guide member is provided on both sides of the boarding / alighting road and in a region where the traveling path moves horizontally in the horizontal area. The guide member has a semi-cylindrical outer shape obtained by dividing a cylindrical shape including an elliptical pillar into a plane along the axial direction, the plane is a mounting surface for the cover member, and the axial direction is the movement of the traveling path. The passenger conveyor according to any one of claims 1 to 3, which is provided in a direction. The passenger conveyor according to any one of claims 1 to 4, wherein the guide member has a shape in which the protrusion height toward the horizontal region side increases from the boarding / alighting road toward the traveling road side. The passenger conveyor according to any one of claims 1 to 5, wherein the protruding height of the guide member is lower than the protruding height of the dress guard including the flexible body. The passenger conveyor according to any one of claims 1 to 6, wherein the guide member is provided in a plurality of directions along the moving direction of the traveling path. The passenger conveyor according to any one of claims 1 to 7, wherein the guide member is made of an elastic material.

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