JP2012071688A - Non-magnetism and non-magnetization caster - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a non-magnetism and non-magnetization caster which is attached to a non-magnetism and non-magnetization stretcher, a non-magnetism and non-magnetization wheelchair, a non-magnetism and non-magnetization caster, etc.SOLUTION: A quiet non-magnetism and non-magnetization caster 100 which has good slidability not different from a conventional caster is provided by attaching synthetic resin made washers 14a, 14b, while using non-magnetism and non-magnetization bearings 18, 18 to the bearing of the caster in which rubber tire 11 is attached to the non-magnetism and non-magnetization wheel 12.

Description

  The present invention relates to non-magnetic and non-magnetic casters for installation on stretchers, wheelchairs, carts, etc. More specifically, non-magnetic / non-magnetic casters (non-magnetic and non-magnetic casters) should be installed on stretchers, wheelchairs, trolleys, etc., and brought into facilities where diagnostic devices such as MRI are installed. The present invention relates to a nonmagnetic / non-magnetic caster for installation on a non-magnetic / non-magnetic stretcher, a non-magnetic / non-magnetic wheelchair, a non-magnetic / non-magnetic carriage, and the like.

  An accident has occurred in which an instrument having magnetism moves in the vicinity of an MRI (Magnetic Resonance Imaging) diagnostic device that generates strong magnetism and moves toward the MRI body and collides with a patient. In general, casters installed on stretchers, wheelchairs, carts, etc. are not non-magnetic or non-magnetic, and thus cannot be brought into facilities where MRI is installed. Recent MRI has improved magnetic output in order to increase diagnostic ability. In order to prevent accidents due to magnetism in MRI facilities that generate such strong magnetism, it is hoped that the equipment and instruments used in the MRI facility are non-magnetic and non-magnetic materials. It is rare. Similarly, non-magnetic and non-magnetic stretchers for bringing patients into the facility, non-magnetic and non-magnetic wheelchairs, and non-magnetic and non-magnetic carts necessary for carrying various tools, etc. Development is desired.

  The invention of Patent Document 1, paragraph [0008] "The stretcher of the present invention is provided between a base on which casters are provided, a mat portion on which a sick person is placed, and between the base and the mat portion, In a stretcher comprising a pantograph-type link mechanism that raises and lowers the mat portion with respect to the base, and a lift mechanism that is provided on the base or the mat portion and expands and contracts the link mechanism, the lift mechanism includes: A first gear provided on the base or the mat portion so as to be rotatable around a first axis; a crank that moves forward and backward by the rotation of the first gear to expand and contract the link mechanism; and It is provided between the base or the mat portion and the first gear, and allows the one-way rotation of the first gear to extend the link mechanism upward, and restricts the rotation of the first gear in the other direction. From the first ratchet and the first gear A second gear which is small in number and meshes with the first gear, and an operation handle which is operated manually and drives the second gear so that the first gear rotates in the one direction. A stretcher is disclosed.

  Paragraph [0009] of the Patent Document 1 “In the stretcher of the present invention, the stretcher drives the second gear by manually operating the operation handle when moving the mat portion upward with respect to the base. Then, the first gear is rotated in one direction around the first axis, and since the second gear has fewer teeth than the first gear, the first gear is decelerated more than the second gear, and the torque of the operating handle is reduced. As a result, the crank moves forward and backward and the link mechanism extends upward, and the first ratchet allows rotation in one direction of the first gear, but other than the first gear. Since the rotation in the direction is limited, the link mechanism will only extend upward. Thus, in this stretcher, the mat portion moves upward relative to the base. ” Paragraph [0010] “And this stretcher does not use conventional ball screws or coil springs that are difficult or impossible to change to a non-magnetic material as a component of the lifting device, and is easy to change to a non-magnetic material. Since the gear, crank, first ratchet and second gear are employed as components of the lifting device, many components can be non-magnetic. "Stretchers are disclosed.

  In paragraph [0020] of Patent Document 2, “In the folding wheelchair of the present invention, it is preferable that all components are made of a non-magnetic material. In this case, it is suitable for use in MRI examination. A wheelchair is disclosed. The wheelchair is described in paragraph [0024] “The right frame 10 is a right side plate 13, a right grip plate 14 provided on a rear end side of the right side plate 13, a right curtain plate 15 provided on a lower end side of the right side plate 13, A right armrest plate 16 provided on the upper end side of the right side plate 13 and a right footrest plate 17 extending forward from the outer surface of the right curtain plate 15. A right extending rearward is provided on the upper rear surface of the right grip plate 14. A grip plate 14g is attached, as shown in Fig. 2, a footrest 17d fixed by a hinge 17t is attached to the front end portion of the right footrest plate 17. The footrest 17d is horizontal. The components of the right frame 10 are all wooden except for the hinge 17t made of SUS304. "A wheelchair is disclosed. . The wheelchair of Patent Document 2 is made of wood in order to make it a non-magnetic wheelchair, and has problems in durability and ease of use. Thus, the appearance of nonmagnetic and nonmagnetic casters to be installed on stretchers and wheelchairs has been desired.

JP 2008-259667 A JP 2008-259668 A

  In the present invention, a caster to be attached to a stretcher, a wheelchair, a carriage, etc. is attached to the stretcher, a wheelchair, a carriage, etc. as a nonmagnetic / non-magnetic caster (nonmagnetic and non-magnetic caster). For non-magnetic / non-magnetic stretchers, non-magnetic / non-magnetic wheelchairs, non-magnetic / non-magnetic trolleys, etc. that can be brought into facilities where diagnostic devices that generate magnetism such as MRI are installed A non-magnetic non-magnetic caster to be installed is provided.

  Diligent research was added to provide non-magnetic and non-magnetic casters to be installed on non-magnetic and non-magnetic stretchers, non-magnetic and non-magnetic wheelchairs, non-magnetic and non-magnetic carts, etc. As a result, non-magnetic and non-magnetic bearings are used as the heart of the caster, and a non-magnetic and non-magnetic bearing is installed.・ Succeeded in obtaining non-magnetic casters.

  A feature of the present invention is a non-magnetic / non-magnetic caster composed of a non-magnetic / non-magnetic wheel, a yoke and an axle. A non-magnetic non-magnetic caster characterized by using a bearing and a synthetic resin washer to improve slidability. Non-magnetic and non-magnetic casters are manufactured using non-magnetic and non-magnetic bearings, and are equipped with synthetic resin washers to improve slidability. is there.

  A further feature of the present invention is the non-magnetic / non-magnetic caster according to claim 1, further comprising a parking brake. A parking brake can be installed on a non-magnetic and non-magnetic caster, and a stretcher can be installed to get on and off patients safely.

  A further feature of the present invention is that a non-magnetic / non-magnetic bearing is used, and a rubber tire is attached to an aluminum wheel of a caster that is provided with a synthetic resin washer to improve slidability. This is a non-magnetic and non-magnetic caster.

  A further feature of the present invention is that a non-magnetic / non-magnetized bearing is used, and a rubber tire is mounted on a caster synthetic resin wheel with a synthetic resin washer to improve slidability. It is a nonmagnetic and non-magnetic caster.

  A further feature of the present invention is that a non-magnetic / non-magnetized bearing is used, and a synthetic resin washer is attached to improve the slidability of the caster, and a rubber tire is attached to a synthetic resin wheel or an aluminum wheel. It is possible to provide a non-magnetic / non-magnetic stretcher characterized in that a non-magnetic / non-magnetic caster is mounted. The non-magnetic and non-magnetic stretcher of the present invention is not attracted to a diagnostic apparatus such as MRI that generates magnetism, and has a characteristic that it does not become magnetized even if left in a facility having an MRI apparatus for a long time. .

  A further feature of the present invention is that a non-magnetic / non-magnetized bearing is used, and a synthetic resin washer is attached to improve the slidability of the caster, and a rubber tire is attached to a synthetic resin wheel or an aluminum wheel. It is possible to provide a non-magnetic / non-magnetic wheelchair characterized in that a non-magnetic / non-magnetic caster is mounted. The non-magnetic / non-magnetic wheelchair of the present invention is not attracted to a diagnostic apparatus such as MRI that generates magnetism, and has a characteristic that it does not become magnetized even if left in a facility having an MRI apparatus for a long time.

  The present invention is further characterized by the use of a non-magnetic / non-magnetic bearing and a caster synthetic resin wheel or aluminum made of a synthetic resin washer for improved slidability. It is possible to provide a non-magnetic / non-magnetic carriage that is characterized in that a non-magnetic / non-magnetic caster characterized by mounting a rubber tire on a wheel is installed. The non-magnetic / non-magnetic carriage of the present invention is not attracted to a diagnostic apparatus such as MRI that generates magnetism, and has a characteristic that it does not become magnetized even if left in a facility having an MRI apparatus for a long time.

  Examples of the “non-magnetic material” and “non-magnetic material” used in the present specification include non-magnetic and non-magnetic materials such as SUS304, aluminum, Shinchu, titanium, and synthetic resins. . Non-magnetic / non-magnetic bearings, non-magnetic / non-magnetic bolts, non-magnetic / non-magnetic nuts, non-magnetic / non-magnetic frames, etc., for example, non-magnetic / non-magnetic stainless steel (for example, SUS304), aluminum, Shinchu, titanium, etc. can be exemplified.

  A non-magnetic / non-magnetic bearing is used for the caster, and a synthetic resin washer is installed to provide a slidable, quiet non-magnetic / non-magnetic caster that produces magnetism such as MRI. To provide non-magnetic / non-magnetic casters to be installed on non-magnetic / non-magnetic wheelchairs, non-magnetic / non-magnetic carts, etc. that can be used in the vicinity of the installation. Can do. In addition, non-magnetic / non-magnetic bearings are used, and synthetic resin washers are used to improve slidability. Synthetic resin or aluminum wheels are rubber tires. It is possible to provide a quiet non-magnetic and non-magnetic caster. The non-magnetic and non-magnetic caster of the present invention has a characteristic that it is not magnetized even if left in an MRI facility for a long time.

It is a side view of the nonmagnetic and non-magnetic caster of the present invention. It is the front of the nonmagnetic and non-magnetic caster of the present invention. It is a side view of the nonmagnetic and non-magnetic caster which installed the foot brake of this invention. It is the partial exploded view of the nonmagnetic and nonmagnetic caster which attached the foot brake. It is a side view of the stretcher which installed the nonmagnetic and non-magnetic caster of this invention. It is a side view of the wheelchair which installed the nonmagnetic and non-magnetic caster of the present invention. It is a perspective view of the trolley | bogie which installed the nonmagnetic and non-magnetic caster of this invention.

  Several preferred embodiments of the embodiments of the present invention are illustrated below with reference to the drawings, but are not intended to limit the scope of the invention described in the claims.

Non-magnetic / non-magnetic caster As shown in FIG. 1 (1-1), the non-magnetic / non-magnetic caster 100 of the present invention has a non-magnetic / non-magnetic magnet wheel. A wheel having a rubber tire 11 attached to the wheel 12 is pivotally attached to the yoke 13. A shaft inner rubber 15 into which a washer 14 is inserted is mounted on the top of the yoke 13 and is fixed by a non-magnetic / non-magnetic oval nut 16. The rotating portion of the nonmagnetic / non-magnetic caster 100 is shown in detail in (1-2) of FIG. As shown in (1-2) of FIG. 1, the rotating portion of the non-magnetic / non-magnetic caster 100 is provided with a non-magnetic / non-magnetic caster shaft 24 attached to the upper portion thereof, and the non-magnetic / non-magnetic caster shaft 100 thereunder. A magnetized yoke cap 17 is crowned. A synthetic resin washer 14a, 14b (in the present invention, (TM) Oiles # 80 washer is used for 14a and (TM) Oiles # 83 washer is used for 14b) under the yoke cap 17 is made of resin. A non-magnetic / non-magnetic bearing 18 ((trademark) Shinchu bearing A5 was used in the present invention) was inserted up and down across the bearing collar 19. Under the bearing 18, synthetic resin washers 14a and 14b were mounted. By inserting synthetic resin washers 14a and 14b above and below the bearing 18, the slidability of the non-magnetic and non-magnetic casters 100 could be improved.

  (2-1) in FIG. 2 shows a front view of the nonmagnetic / non-magnetic caster 100, and a detailed drawing of a portion B surrounded by a circle is shown in (2-2) in FIG. As shown in FIG. 2 (2-2), the wheel 12 is mounted on the yoke 13 with a radial shaft 21, and caster collars 22 and 22 are inserted between the wheel 12 and the yoke 13. Yes. The wheel 12 is pivotally mounted with non-magnetic and non-magnetic bearings 18b, 18b (in the present invention, a Shinchu bearing (radial) is used). Further, a bearing 18 a (in the present invention, a Shinchu bearing was used) was also attached to the outside of the yoke 13 and fixed with an axle nut 23. The size of the wheel is usually a size that is attached to a wheelchair or a stretcher and is, for example, 4 to 8 inches, but is not limited thereto.

FIG. 3 shows a side view of a non-magnetic / non-magnetic caster 200 having a brake. As shown in FIG. 3 (3-1), a brake lever 28 and a brake shoe 29 that is operated by the brake lever 28 are attached to one end of the yoke 13. For details, as shown in FIG. 3 (3-2), a caster cap 26 is crowned under the thrust shaft 25, and synthetic resin washers 14a, 14b (in this application, 14a is Oiles # 83). The washer 14b is an oilless # 80 washer.), Bearings 18 and 18 are installed, a parking serration 27 is provided, and a nut 20 (in this application, a Shinchu resin nut is used). )).

  (4-1) of FIG. 4 has shown the front view of the nonmagnetic and non-magnetic caster 200 which has a brake. As shown in the partial cross-sectional view of (4-2) in FIG. 4, the wheel is mounted on the yoke 13 on the radial shaft 21, and caster collars 22 and 22 are mounted therebetween. Non-magnetic and non-magnetic bearings 18 and 18 are attached to the wheel 12, and a washer 14 (in this application, a Shinchu washer) and a nut 20 (in this application, a Shinchu resin nut is used). )).

  (4-3) in FIG. 4 shows a partial cross-sectional view of the brake portion. The brake lever 28 is pivotally attached by a cap bolt 31 and a former nut 32 so as to be axially movable.

Example of Installation of Nonmagnetic / Non-Magnetic Casters (a) Stretcher FIG. 5 shows an example in which the nonmagnetic / non-magnetic casters 200 of the present invention are installed on a stretcher 33 made of a nonmagnetic / non-magnetic frame. The stretcher 33 shown in FIG. 5 is a nonmagnetic / non-magnetic stretcher 33 configured using nonmagnetic / non-magnetic stainless steel (for example, SUS304), aluminum, Shinchu, titanium, synthetic resin, or the like. Non-magnetic / non-magnetic casters 200 having the brake of the present invention can be attached to the leg portions of such non-magnetic / non-magnetic stretcher 33 at four locations on the left and right sides. Non-magnetic and non-magnetic casters installed on non-magnetic and non-magnetic stretchers are not limited to non-magnetic and non-magnetic casters 200 with brakes. Non-magnetic casters 100 may be installed.
(B) Wheelchair FIG. 6 shows an example in which the nonmagnetic / non-magnetic caster 100 of the present invention is mounted on a wheelchair 34 made of a non-magnetic / non-magnetic frame. The non-magnetic / non-magnetic wheelchair 34 shown in FIG. 6 is a non-magnetic / non-magnetic wheelchair manufactured using non-magnetic / magnetic stainless steel (for example, SUS304), aluminum, Shinchu, titanium, synthetic resin, and the like. . The non-magnetic / non-magnetic caster 100 of the present invention can be attached to the front leg portion of such a non-magnetic / non-magnetic wheelchair.
(C) Cart FIG. 7 shows an example in which the non-magnetic / non-magnetic casters 100 and 200 according to the present invention are installed before and after the non-magnetic / non-magnetic carriage 35. A cart 35 shown in FIG. 7 is a non-magnetic / non-magnetized cart 35 made of non-magnetic / non-magnetized stainless steel (for example, SUS304), aluminum, shinchu, titanium, synthetic resin or the like. The non-magnetic / non-magnetic casters 100 and 200 of the present invention can be attached to the lower parts of the front and rear of such a non-magnetic / non-magnetic carriage 35. The non-magnetic / non-magnetic casters 100 and 200 attached to the carriage use 2 to 4 inch wheels which are smaller than the non-magnetic / non-magnetic casters attached to the stretcher or wheelchair.

100: Non-magnetic / non-magnetic caster of the present invention 200: Non-magnetic / non-magnetic caster having a brake of the present invention 11: Tire 12: Wheel 13: Yoke 14: Washer 15: Shaft inner rubber 16: Oval nut 17: Yoke cap 18: Bearing 19: Bearing collar 20: Nut 21: Radial shaft 22: Caster collar 23: Axle nut 24: Caster shaft 25: Thrust shaft 26: Caster cap 27: Parking serration 28: Brake lever 29: Brake shoe 30: Brake spring 31: Cap bolt 32: Former nut 33: Stretcher 34: Wheelchair 35: Cart

Claims (7)

A non-magnetic and non-magnetic caster consisting of non-magnetic and non-magnetic wheels, yokes and axles, using non-magnetic and non-magnetic bearings for the moving parts of the wheels and axles, and combining Non-magnetic and non-magnetic caster, characterized in that resin washer is installed to improve slidability. Non-magnetic and non-magnetized casters with brakes composed of non-magnetic and non-magnetized wheels, yokes and axles, using non-magnetic and non-magnetized bearings for the movable parts of the wheels and axles In addition, a non-magnetic non-magnetic caster having a brake, wherein a washer made of synthetic resin is installed to improve slidability. 3. The non-magnetic non-magnetic caster according to claim 1, wherein the wheel is an aluminum wheel and a rubber tire is mounted on the wheel. The non-magnetic / non-magnetic caster according to claim 1, wherein the wheel is a rubber wheel mounted on a synthetic resin wheel. A nonmagnetic / non-magnetic stretcher comprising the non-magnetic / non-magnetic caster according to any one of claims 1 to 4. A non-magnetic / non-magnetic wheelchair comprising the non-magnetic / non-magnetic caster according to claim 1. A non-magnetic / non-magnetic carriage, wherein the non-magnetic / non-magnetic caster according to claim 1 is installed.

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