JP2007002631A - Door roller unit and door roller unit installing structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door roller unit and a door roller unit installing structure, having high durability, having a simple structure, and capable of exhibiting sure soundproof performance. <P>SOLUTION: This door roller unit installing structure is formed by fitting the door roller unit 10 for rotatably installing a wheel 1 via an axle 2 in a recessed part 12 formed on a bottom surface of a sliding door 11 so that a wheel 1 lower part projects from an opening part 9 on the inside of a box-shaped frame body 3 having the opening part 9 on an under surface. A shock absorbing material 6 or a vibration damping material is sandwiched between an upper surface of the box-shaped frame body 3 and a ceiling wall 13 of the recessed part 12. The shock absorbing material or the vibration damping material is also desirably sandwiched between a side surface of the box-shaped frame body 3 and a side wall 14 of the recessed part 12. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a door cart used for sliding doors and the like.

As for the doors of Western-style houses, the doors are common, but they do not take up space for opening and closing, and are suitable for wheelchairs, so there are many cases where sliding doors are used. Regarding the structure of the sliding door, there is an “upper suspension door” in which a door is mounted on the upper part. However, in general, there are many examples in which the door is mounted on the lower part because the structure is simple and construction is easy.
7 to 9 show a conventional example in which a door wheel is mounted on the lower part of such a sliding door. The door unit 100 is attached to the lower part of the sliding door 11 shown in FIG. 8 is an enlarged view of the lower left part of FIG. 7, and FIG. 9 is a cross-sectional view taken along the line DD of FIG.

The door cart unit 100 includes a box-shaped frame 3 having an opening 9 on the lower surface and a wheel 1 attached to the inside of the box-shaped frame 3. The wheel 1 is rotatably mounted via an axle 2 and the lower portion of the wheel 1 protrudes so as to protrude from the opening 9 of the box-shaped frame 3.
On the other hand, a recess 12 is formed on the bottom surface of the sliding door 11 according to the shape of the box-shaped frame 3. The door unit 100 is fitted in the recess 12 and fixed by passing screws 5 and 5 through the mounting seats 4 and 4 on both sides.
The sliding door 11 is installed on a rail provided on the sill, and is opened and closed left and right as the wheel 1 travels on the rail.
The door unit is not limited to the box-shaped unit as described above, but has various configurations.

In a sliding door with a door car installed in the lower part as described above, the running sound of the sliding door is transmitted to the chassis through the threshold and tends to be transmitted as a loud noise to the adjacent room or downstairs. In some cases, the sliding door itself becomes like a diaphragm and generates noise.
The cause of the noise generated by the traveling of a door roller is that when a screw or nail fixing hole is drilled in the rail head and comes into contact with the wheel, when the metal comes into contact with each other due to running out of oil, When the contact surface becomes creepy due to creep deformation, dust accumulates on the rail part and contacts the wheel, insufficient fixation, or the nail or screw used for mounting loosens, causing `` flapping '', etc. Can be considered.

The vibration generated in this way is transmitted from the door to the sliding door main body integrated with the sill or the door. When transmitted to the sliding door body, the sliding door is a thin sheet with a large area corresponding to the “diaphragm” of the speaker, and therefore, the sliding door tends to be released into the air as sound.
Therefore, conventionally, countermeasures have been taken against such noise generation by improving the door cart and improving the rail on which the door wheel runs.

As an improvement of the door wheel, a method of using a flexible rubber wheel instead of a metal wheel can be mentioned. Patent Document 1 discloses an invention in which the wheel itself has a vibration-proof structure.
Further, Patent Document 2 discloses an invention in which an elastic material is provided around the rail as an improvement of the rail on which the doorwheel travels.
JP 2000-291319 A Japanese Utility Model Publication No. 3-126982

However, each of the above conventional methods has the following problems.
If rubber wheels are used instead of metal wheels, they will easily wear out and the debris will adhere to the rails and become contaminated, they will deteriorate easily and are not suitable for long-term use, and the softer the deformation will be. Problems arise such as an increase in rolling resistance, and creep deformation if it is in a constant position for a long time.
Further, when the wheel itself has a vibration-proof structure as in the invention described in Patent Document 1, the structure is complicated and there is a great risk of breakage or wear of parts.
In addition, when an elastic material is provided around the rail as in the invention described in Patent Document 2, the cushioning material is partially crushed due to long-term use, and the rail is distorted, and the upper part of the sliding door is detached from the duck. If it falls off or closes the sliding door, there is a risk of creating a gap with the frame material.

  Therefore, the present invention is to solve the above-described conventional problems, and provides a door unit and a mounting structure of the door unit that have high durability, have a simple structure, and can exhibit reliable soundproof performance. .

In order to solve the above-described conventional problems, the door unit of the invention according to claim 1 is a door unit in which an axle for rotatably supporting a wheel is attached to a bearing member, A shock-absorbing material or a damping material is attached to at least a part.
The cushioning material is a material that can relax and soften a collision or impact between two objects. The damping material refers to a material having a large ability to convert vibration energy that enters the material from the outside into heat energy and absorb it.
Further, the “buffer material or damping material” includes a case where only one of the cushioning material and the damping material is used, and a case where both the cushioning material and the damping material are used. It may have the characteristics of both a shock absorbing material and a damping material.

  Further, the door unit of the invention according to claim 2 is configured such that the wheel (1) is freely rotatable through the axle (2) inside the box-shaped frame (3) having an opening (9) on the lower surface. (1) A door unit (10) attached so that a lower part protrudes from the opening (9), and a cushioning material (6) or a damping material is attached to the upper surface of the box-shaped frame (3) It is characterized by that.

  The invention according to claim 3 is the invention according to claim 2, wherein the shock absorbing material (7) or the damping material (8) is attached to at least one of the side surfaces of the box-shaped frame (3). It is characterized by that.

  According to a fourth aspect of the present invention, there is provided a structure for mounting a door roller unit in which a door wheel unit formed by axially mounting a wheel shaft rotatably supporting a wheel on a bearing member is fitted into a recess formed on a bottom surface of a sliding door. In the door roller unit mounting structure, a cushioning material or a damping material is sandwiched between at least a part between the bearing member and the recess.

  In addition, in the mounting structure of the door unit according to the fifth aspect of the present invention, the wheel (1) can be freely rotated via the axle (2) inside the box-shaped frame (3) having the opening (9) on the lower surface. And a wheelchair unit (10) attached so that a lower part of the wheel (1) protrudes from the opening (9) is fitted into a recess (12) formed on the bottom surface of the sliding door (11). In the unit mounting structure, a cushioning material (6) or a damping material is sandwiched between the upper surface of the box-shaped frame (3) and the ceiling wall (13) of the recess (12).

  Further, the invention according to claim 6 is the invention according to claim 5, wherein a buffer is provided between at least one of the side surfaces of the box-shaped frame (3) and the side wall (14) of the recess (12). A material (7) or a damping material (8) is sandwiched.

  The symbols in parentheses indicate the best mode for carrying out the invention and the corresponding elements or the corresponding matters described in the drawings.

  According to the first aspect of the present invention, the shock absorber or the damping material is attached to at least a part of the periphery of the bearing member of the door roller unit, and therefore the door wheel unit is fitted into the recess formed on the bottom surface of the sliding door. By wearing it, it is possible to suppress the generation of noise during traveling of the sliding door.

Further, according to the invention described in claim 2, since the cushioning material or the vibration damping material is attached to the upper surface of the box-shaped frame constituting the door cart unit, the door wheel unit is formed in the recess formed on the bottom surface of the sliding door. By fitting, noise generation during sliding door travel can be suppressed.
In particular, in the invention according to claim 2, since the shock absorbing material or the damping material is attached to the upper surface portion of the box-shaped frame that is most susceptible to the vibration generated when the wheel travels on the rail. The prevention effect is great.

  According to the invention described in claim 3, in addition to the function and effect of the invention described in claim 2, at least one of the side surfaces of the box-shaped frame constituting the door unit has a shock absorbing material or a damping material. Therefore, it is possible to cope with the vibration transmitted to the side surface of the box-shaped frame and further enhance the noise prevention effect.

  According to the invention described in claim 4, since the cushioning material or the damping material is sandwiched between at least a part between the bearing member of the door roller unit and the recess formed in the bottom surface of the sliding door, the sliding door travel Noise generation at the time can be suppressed.

According to the invention described in claim 5, the cushioning material or the vibration damping material is sandwiched between the upper surface of the box-shaped frame constituting the door unit and the ceiling wall of the recess formed in the bottom surface of the sliding door. Therefore, it is possible to suppress noise generation during traveling of the sliding door.
In particular, in the invention according to claim 5, the upper surface of the box-shaped frame body and the ceiling wall of the concave section are most easily subjected to vibration generated when the wheel travels on the rail, between the box-shaped frame body and the concave portion. Since a shock-absorbing material or a damping material is sandwiched between them, the noise prevention effect is great.

  Further, according to the invention described in claim 6, in addition to the function and effect of the invention described in claim 5, it is formed on at least one of the side surfaces of the box-shaped frame constituting the door unit and the bottom surface of the sliding door. Since the cushioning material or the damping material is sandwiched between the side wall of the concave portion, it is possible to cope with the vibration transmitted to the side surface of the box-shaped frame body, and to further enhance the noise prevention effect.

In addition, the noise prevention effect in the inventions according to claims 1 to 6 is caused by the following actions.
In other words, when the shock absorber is attached, the shock absorber can loosen and soften the shock generated by the vibration generated when the wheel travels on the rail, so the running sound of the sliding door is transmitted to the housing and generates noise. Can be prevented.
In addition, when the damping material is attached, the vibration energy generated when the wheel travels on the rail can be converted into heat energy and absorbed, so the running sound of the sliding door is It is possible to prevent noise from being transmitted to the vehicle.

Moreover, in any invention of Claim 1 thru | or 6, it is not necessary to use a rubber-made wheel as a wheel, Since a nylon-made wheel can be used, sufficient durability is acquired. Even when the effect of the cushioning material and the damping material is reduced by using for many years, it is easy to recover the effect because the cushioning material and the damping material can be exchanged by removing the door unit.
In addition, the wheel itself does not need to have a complicated structure, and there is little risk of breakage or wear of parts.

Next, with reference to FIG.1 and FIG.2, the construction of the door unit and the mounting structure of the door unit according to Embodiment 1 of the present invention will be described.
FIG. 1 is a front view showing the mounting structure of the door unit 10 according to the first embodiment, and corresponds to an enlarged lower left portion of the sliding door 11 shown in FIG. 2 is a cross-sectional view taken along the line AA in FIG.

The door unit 10 is composed of a box-shaped frame 3 having an opening 9 on the lower surface, and a wheel 1 attached to the inside of the box-shaped frame 3. The wheel 1 is rotatably mounted via an axle 2 and the lower portion of the wheel 1 protrudes so as to protrude from the opening 9 of the box-shaped frame 3.
On the other hand, a recess 12 is formed on the bottom surface of the sliding door 11 according to the shape of the box-shaped frame 3. The door unit 100 is fitted in the recess 12 and fixed by passing screws 5 and 5 through the mounting seats 4 and 4 on both sides. The method of attaching the box-shaped frame 3 to the recess 12 is not limited to the method using the mounting seat 4 and the screw 5 as shown in FIG. 1, for example, applying an adhesive around the box-shaped frame 3. It is also possible to use a method of inserting and adhering.

Further, the cushioning material 6 is sandwiched between the upper surface of the box-shaped frame 3 and the ceiling wall 13 of the recess 12.
The cushioning material 6 is not particularly limited as long as it can relax and soften the impact and impact between two objects, but more specifically, urethane foam, felt, rubber, polyethylene. Foam, gel, etc. can be used. In particular, from the viewpoint of both the soundproofing effect and the long-term stability of the soundproofing performance, it is effective to use a foamed rubber having a thickness of about 3 mm.
The cushioning material 6 may be attached in advance to the top surface of the box-shaped frame 3 of the door unit 10 so as to be manufactured as a door unit with the cushioning material, or the door unit 10 may be attached to the sliding door 11. Sometimes the cushioning material 6 may be sandwiched. In that case, it is not necessary to stick the buffer material 6 on the upper surface of the box-shaped frame 3.
Moreover, although it is preferable that the buffer material 6 covers the whole upper surface of the box-shaped frame 3, if at least the upper surface is covered to such an extent that it does not touch the ceiling wall 13 of the recessed part 12 directly, a soundproof effect will be acquired. Is possible.

According to the mounting structure of the door roller unit 10 according to the first embodiment, the cushioning material is provided between the upper surface of the box-shaped frame 3 constituting the door wheel unit 10 and the ceiling wall 13 of the recess 12 formed on the bottom surface of the sliding door 11. 6 is sandwiched, noise generation during the sliding door 11 traveling can be suppressed.
In particular, between the box-shaped frame 3 and the recess 12, the vibration generated when the wheel 1 travels on the rail is most easily transmitted between the upper surface of the box-shaped frame 3 and the ceiling wall 13 of the recess 12. Since the cushioning material 6 is sandwiched, the noise prevention effect is great.
The noise prevention effect described above is that the shock absorber 6 relaxes and softens the impact generated by the vibration generated when the wheel 1 travels on the rail, so that the traveling sound of the sliding door 11 is transmitted to the housing and generates noise. This is because it can be prevented.

Further, it is not necessary to use a rubber wheel as the wheel 1, and a nylon wheel can be used, so that sufficient durability can be obtained. Even when the effect of the cushioning material 6 decreases due to the use for many years, it is easy to recover the effect because the cushioning material 6 can be replaced by removing the door cart unit 10.
Further, the wheel 1 itself does not need to have a complicated structure, and there is little risk of breakage or wear of parts.

Next, with reference to FIG.3 and FIG.4, the construction of the door unit and the mounting structure of the door unit according to Embodiment 2 of the present invention will be described.
FIG. 3 is a front view showing the mounting structure of the door roller unit 20 according to the second embodiment, and corresponds to an enlarged lower left portion of the sliding door 11 shown in FIG. 4 is a cross-sectional view taken along the line BB in FIG.

The mounting structure of the door unit 20 according to the second embodiment is substantially the same as the mounting structure of the door unit 10 according to the first embodiment, but differs in the following points.
In the mounting structure of the door cart unit 20, the buffer material 7 is sandwiched between the side surface of the box-shaped frame 3 and the side wall 14 of the recess 12 in addition to the buffer material 6 in the door cart unit 10. Since the box-shaped frame 3 has four side surfaces, a total of four cushioning materials 7 are sandwiched between the side surfaces and the side walls 14.
As the buffer material 6, urethane foam, felt, rubber, polyethylene foam, gel or the like can be used for the buffer material 7. In particular, the shock-absorbing material 7 used on the side surface is effective when a foam rubber having a thickness of about 1 mm is used in view of both the soundproofing effect and the long-term stability of the soundproofing performance.

Note that the cushioning material 7 may be attached to the side surface of the box-shaped frame 3 in advance, or the cushioning material 7 may be sandwiched when the cushioning material 7 is attached to the sliding door 11.
Moreover, although it is preferable that the buffer material 7 covers all four side surfaces of the box-shaped frame 3, it is possible to obtain a soundproofing effect as long as at least one surface is covered. Further, although it is preferable to cover the entire side surface, it is possible to obtain a soundproofing effect as long as at least the side surface is covered so as not to directly touch the side wall 14 of the recess 12. The end portion of the axle 2 that is exposed on the side surface of the body 3 can be avoided so as not to be covered.

  According to the mounting structure of the door unit 20 according to the second embodiment, the cushioning material 6 is provided between the side surface of the box-shaped frame 3 constituting the door unit 20 and the side wall 14 of the recess 12 formed on the bottom surface of the sliding door 11. Therefore, the vibration transmitted to the side surface of the box-shaped frame 3 can be dealt with, and the noise prevention effect can be further enhanced.

Next, with reference to FIG.5 and FIG.6, the door-car unit which concerns on Embodiment 3 of this invention, and the attachment structure of a door-car unit are demonstrated.
FIG. 5 is a front view showing the mounting structure of the door roller unit 30 according to the third embodiment, and corresponds to an enlarged lower left portion of the sliding door 11 shown in FIG. 6 is a cross-sectional view taken along the line CC of FIG.

The mounting structure of the door unit 30 according to the third embodiment is substantially the same as the mounting structure of the door unit 20 according to the second embodiment, but differs in the following points.
In the mounting structure of the door cart unit 30, the damping material 8 is sandwiched between the side surface of the box-shaped frame 3 and the side wall 14 of the recess 12 instead of the cushioning material 7 in the door cart unit 20. Since the box-shaped frame 3 has four side surfaces, a total of four damping materials 8 are sandwiched between the side surfaces and the side walls 14.
The damping material 8 is not particularly limited as long as it is a material having a large ability to convert vibration energy that has entered the material from the outside into heat energy and absorb it, but more specifically, Vinyl chloride, asphalt, butyl rubber, polyurethane and the like can be used. Further, it is effective to use a thickness of about 0.5 to 2.0 mm.
As the damping material 8, for example, SJ-5600 series (clear urethane roll stock) manufactured by Sumitomo 3M Limited or SJ 5800 series (urethane roll stock) can be used.

The damping material 8 may also be attached to the side surface of the box-shaped frame 3 in advance, or the damping material 8 may be sandwiched when the damping material 8 is attached to the sliding door 11.
Moreover, although it is preferable that the damping material 8 covers all four side surfaces of the box-shaped frame 3, it is possible to obtain a soundproofing effect as long as at least one surface is covered. Further, although it is preferable to cover the entire side surface, it is possible to obtain a soundproofing effect as long as at least the side surface is covered so as not to directly touch the side wall 14 of the recess 12. The end portion of the axle 2 that is exposed on the side surface of the body 3 can be avoided so as not to be covered.

According to the mounting structure of the door unit 30 according to the third embodiment, the vibration damping material is provided between the side surface of the box-shaped frame 3 constituting the door unit 30 and the side wall 14 of the recess 12 formed on the bottom surface of the sliding door 11. Since 8 is sandwiched, it is possible to cope with the vibration transmitted to the side surface of the box-shaped frame 3 and to further enhance the noise prevention effect.
The above-described noise prevention effect is that the vibration damping material 8 converts the vibration energy generated when the wheel 1 travels on the rail into heat energy and absorbs it, so that the traveling sound of the sliding door 11 is transmitted to the housing and generates noise. This is because it can be prevented.

As mentioned above, although Embodiment 1 thru | or Embodiment 3 was demonstrated, it is not restricted to this, For example, it replaces with the shock absorbing material 6 between the upper surface of the box-shaped frame 3, and the ceiling wall 13 of the recessed part 12, and clamps a damping material. You may do it.
Further, only one of the cushioning material and the damping material may be used, or both the cushioning material and the damping material may be used. Further, one member having the characteristics of both a shock absorbing material and a vibration damping material may be used.
Moreover, in Embodiment 1 thru | or Embodiment 3, although all demonstrated the door-car unit comprised from the box-shaped frame 3 and the wheel 1, a door-car unit is not restricted to a box-shaped thing. Therefore, in the case of a door unit having a structure in which an axle for rotatably supporting a wheel is attached to a bearing member, a shock absorbing material or a damping material may be attached to at least a part around the bearing member. Alternatively, a shock-absorbing material or a damping material may be sandwiched between at least a part between the bearing member and the recess formed on the bottom surface of the sliding door.

It is a front view which shows the attachment structure of the door-car unit which concerns on Embodiment 1 of this invention. It is AA sectional drawing of FIG. It is a front view which shows the attachment structure of the door-car unit which concerns on Embodiment 2 of this invention. It is BB sectional drawing of FIG. It is a front view which shows the attachment structure of the door-car unit which concerns on Embodiment 3 of this invention. It is CC sectional drawing of FIG. It is a front view which shows the sliding door equipped with the door wheel. It is a front view which shows the attachment structure of the door roller unit which concerns on a prior art example. It is DD sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wheel 2 Axle 3 Box-shaped frame 4 Mounting seat 5 Screw 6 Buffer material 7 Buffer material 8 Damping material 9 Opening part 10 Door unit 11 Sliding door 12 Recess 13 Ceiling wall 14 Side wall 20 Door unit 30 Door unit 100 Door unit

Claims (6)

A door unit comprising an axle that rotatably supports a wheel and a bearing member.
A door unit having a shock-absorbing material or a damping material attached to at least a part around the bearing member. In the interior of a box-shaped frame having an opening on the lower surface, a door unit that is attached to the wheel so that the wheel can rotate freely through the axle and the lower part of the wheel protrudes from the opening,
A door unit having a cushioning material or a damping material attached to an upper surface of the box-shaped frame.   The door block unit according to claim 2, wherein a shock absorbing material or a damping material is attached to at least one of the side surfaces of the box-shaped frame. In the mounting structure of the door wheel unit, in which the door wheel unit formed by axially attaching the wheel shaft rotatably supporting the wheel to the bearing member is fitted in the recess formed in the bottom surface of the sliding door,
A structure for mounting a door wheel unit, wherein a cushioning material or a damping material is sandwiched between at least a part between the bearing member and the recess. A recess formed in the bottom surface of the sliding door, in which a door unit is mounted inside a box-shaped frame having an opening on the lower surface so that the wheel is rotatable via an axle and the lower part of the wheel protrudes from the opening. In the mounting structure of the door unit that is fitted to
A structure for mounting a door roller unit, wherein a cushioning material or a damping material is sandwiched between an upper surface of the box-shaped frame and a ceiling wall of the recess. 6. The structure for mounting a door unit according to claim 5, wherein a cushioning material or a damping material is sandwiched between at least one of the side surfaces of the box-shaped frame and the side wall of the recess.

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