GB2515480A - Caster switch unit for carry-and-transport device - Google Patents

Caster switch unit for carry-and-transport device Download PDF

Info

Publication number
GB2515480A
GB2515480A GB1311155.4A GB201311155A GB2515480A GB 2515480 A GB2515480 A GB 2515480A GB 201311155 A GB201311155 A GB 201311155A GB 2515480 A GB2515480 A GB 2515480A
Authority
GB
United Kingdom
Prior art keywords
carry
transport device
unit
ground
caster
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB1311155.4A
Other versions
GB201311155D0 (en
Inventor
Samuel Lin
Yan-Sheng Lin
I-Ping Huang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sunpex Technology Co Ltd
Original Assignee
Sunpex Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sunpex Technology Co Ltd filed Critical Sunpex Technology Co Ltd
Priority to GB1311155.4A priority Critical patent/GB2515480A/en
Publication of GB201311155D0 publication Critical patent/GB201311155D0/en
Publication of GB2515480A publication Critical patent/GB2515480A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/04—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors
    • B60B33/06—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors mounted retractably
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/006—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism
    • B60B33/0065—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis
    • B60B33/0068—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis the swivel axis being vertical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/04—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors
    • B60B33/06—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors mounted retractably
    • B60B33/063—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors mounted retractably by linear movement parallel to swivel axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/001—Steering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/008—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor having more than two axes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/02—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving parts being adjustable, collapsible, attachable, detachable or convertible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2200/00—Type of product being used or applied
    • B60B2200/20—Furniture or medical appliances
    • B60B2200/24—Beds
    • B60B2200/242—Hospital beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2380/00—Bearings
    • B60B2380/70—Arrangements
    • B60B2380/71—Single track
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/10—Reduction of
    • B60B2900/121—Resisting forces
    • B60B2900/1212—Resisting forces due to friction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2301/00—Wheel arrangements; Steering; Stability; Wheel suspension
    • B62B2301/08—Wheel arrangements; Steering; Stability; Wheel suspension comprising additional wheels to increase stability

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Handcart (AREA)

Abstract

A transport device, for example a push-cart or a bed, has a castor 11 and a wheel 12, and an auxiliary castor 23 connected to the lower end of a moveable frame 22 connected to a sleeve 21 located near the wheel. Auxiliary castor 23 is normally above the ground and not in contact with the ground. A switch, which may comprise a lever 24 and may comprise a hydraulic, pneumatic or electric cylinder, is connected to the moveable frame 22 and moves it upwardly and downwardly, which may lower auxiliary castor 23 to the ground and may raise wheel 12. Lowering auxiliary castor 23 may reduce the turning radius of the device, which may make it easier to perform a U-turn in a confined space.

Description

CASTER SWITCH UNIT FOR CARRY-AND-TRANSPORT DEVICE
BACKGROUND OF THE INVENTION
1. Fiehl of the Invention The present invention relates to a caster switch unit for a carry-and-transport device, and more particularly, to a caster switch unit for reducing the turning radius of the carry-and-transport device.
2. Description of Related Art
The conventional carry-and-transport devices, such as stroller carts, shopping carts and transportation carts, are used for carry objects or goods from one place to another to save energy and transportation time. Besides, some of the carry-and-transport devices are used for moving patients in hospitals or between clinic rooms.
However, when using the carry-and-transport devices, the users are experienced that a larger area is required when turning these carry-and-transport 1 5 devices. In other words, the turning radius for the conventional carry-and-transport devices is not satisfied by the uses so that when the carry-and-transport devices are used in a narrow spacc, it is difficult to turn or make a U-turn.
The present invention intends to provide a caster switch unit for a carry-and-transport device so as to reduce the turning radius and to improve the shortcomings of the conventional carry-and-transport devices.
SUMMARY OF THE INVENTION
The present invention relates to a carry-and-transport device and comprises a caster unit and a straight-wheel unit. A control unit has a sleeve which is located corresponding to the straight-whecil unit. A movable frame is connected to the sleeve and has an auxiliary caster unit connected to the lower end thereof. The auxiliary caster unit is normally located above the ground. A switch unit is connected to the top of the movable frame which controls the movable frame to move upward and downward.
Preferably, the carry-and-transport device is a transportation cart, a manual cartorabed.
Preferably, the switch unit of the control unit is a lever.
Preferably, the switch unit of the control unit is a hydraulic cyHnder, a pneumatic cylinder or an electric cylinder.
The primary object of the present invention is to provide a 1 5 carry-and-transport device which has a control unit which is located corresponding to the straight-wheel unit of the carry-and-transport device. When the carry-and-transport device turns or makes a U-turn, the auxiliary caster unit touches the ground by operation of the control unit so as to reduce the turning radius of the carry-and-transport device.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. I is a perspective view to show the carry-and-transport device of the present invention; Fig. 2 is a front view of the eany-and-transport device of the present invention; Fig. 3 is a side view of the carry-and-transport device of the present invention; Fig. 4 is an enlarged view to show a portion of the carry-and-transport device of the present invention; Fig. 5 is a side view to show the operation of the carry-and-transport device of the present invention, and Fig. 6 is an enlarged view to show a portion of the carry-and-transport device of the present invention when in use.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to Figs. 1 and 2, a carry-and-transport device 1 of the present invention comprises a caster unit 11 and a straight-wheel unit 12. The carry-and-transport device 1 of the present invention can be a transportation cart, a manual cart or a bed.
A control unit 2 has a sleeve 21 which is located corresponding to the straight-wheel unit 12. A movable frame 22 is connected to the sleeve 21 and has an auxiliary caster unit 23 connected to die lower end thereof The auxiliary caster urut 23 is normally located above the ground and does not contact the ground. A switch unit 24 is connected to the top of the movable frame 22 which controls the movable frame 22 to move upward and downward. The switch unit 24 of the control unit 2 is a lever, a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.
As shown in Figs. 3 and 4, in normal condition, the auxiliary caster unit 23 is normally located above the ground and does not contact the ground, and the carry-and-transport device 1 moves by the caster unit 11 and the straight-wheel unit 12.
When the carry-and-transport device I turns or makes a U-turn, as shown in Figs. 5 and 6, the user operates the switch unit 24 of the control unit 2 to move the movable frame 22 downward. The auxiliary caster unit 23 is lowered to touch the ground, and the straight-wheel unit 12 is lifted and does not touch the ground when the auxiliary caster unit 23 touches the ground. Therefore, the carry-and-transport device 1 can easily turn or make a U-turn by the caster unit 11 the auxiliary caster unit 23. The required turning radius of the carry-and-transport device I is significantly reduced.
The carry-and-transport device 1 of the present invention has the control unit 2 located at the straight-wheel unit 12, so that when the carry-and-transport device 1 turns or makes a U-turn, the auxiliary caster unit 23 is lowered and touches the ground to h&p the carry-and-transport device 1 to turn or make a U-turn. The required turning radius of the carry-and-transport device 1 is significantly reduced.
Wiule we have shown and described the embodiment in accordance with the present invention, it shoLdd he clear to those skiUcd in the art that further embodiments may be made without departing from the scope of the present invention.

Claims (4)

  1. CLAIMSI. A carry-and-transport device comprising: a caster unit arid a straight-wheel unit; a control unit having a sleeve which is located corresponding to the straight-wheel unit, a movable frame connected to the sleeve and having an auxiliary caster unit connected to a lower end thereof, the auxiliary caster unit being normally located above the ground, and a switch unit connected to a top of the movable frame which controls the movable frame to move upward and downward.
  2. 2. The carry-and-transport device as claimed in claim 1, wherein the carry-and-transport device is a transportation cart, a manual cart or a bed.
  3. 3. The carry-and-transport device as claimed in claim I, wherein the switch unit of the control unit is a lever.
  4. 4. The carry-and-transport device as claimed in claim 1, wherein the switch unit of the control unit is a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.
GB1311155.4A 2013-06-24 2013-06-24 Caster switch unit for carry-and-transport device Withdrawn GB2515480A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1311155.4A GB2515480A (en) 2013-06-24 2013-06-24 Caster switch unit for carry-and-transport device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1311155.4A GB2515480A (en) 2013-06-24 2013-06-24 Caster switch unit for carry-and-transport device

Publications (2)

Publication Number Publication Date
GB201311155D0 GB201311155D0 (en) 2013-08-07
GB2515480A true GB2515480A (en) 2014-12-31

Family

ID=48950326

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1311155.4A Withdrawn GB2515480A (en) 2013-06-24 2013-06-24 Caster switch unit for carry-and-transport device

Country Status (1)

Country Link
GB (1) GB2515480A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2565771A (en) * 2017-08-16 2019-02-27 Campbell Trevor Height-adjustable wheel assembly
WO2019123461A1 (en) * 2017-12-19 2019-06-27 Nir Yifrah Steerable multi-terrain cart and method therefor
CN110901327A (en) * 2019-12-04 2020-03-24 三一重工股份有限公司 Active suspension system, automatic guided transport vehicle and pressure adjusting method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1271515A (en) * 1917-03-02 1918-07-02 Jane L W Murray Piece of furniture convertible for use as a bed, couch, bath-chair, or the like.
JPH05293142A (en) * 1992-04-22 1993-11-09 Fujitsu Ltd Medical apparatus with auxiliary casters
SE501348C2 (en) * 1993-08-13 1995-01-23 Jan Lindberg Transport or handling truck - has two pairs of wheels, and lowerable castor type fifth wheel mounted on cross beam between wheel pairs
JPH1159431A (en) * 1997-08-11 1999-03-02 Mitsubishi Heavy Ind Ltd Unmanned carrier
WO2012110397A1 (en) * 2011-02-14 2012-08-23 Digital Consult Integral AG Dolly and use of a dolly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1271515A (en) * 1917-03-02 1918-07-02 Jane L W Murray Piece of furniture convertible for use as a bed, couch, bath-chair, or the like.
JPH05293142A (en) * 1992-04-22 1993-11-09 Fujitsu Ltd Medical apparatus with auxiliary casters
SE501348C2 (en) * 1993-08-13 1995-01-23 Jan Lindberg Transport or handling truck - has two pairs of wheels, and lowerable castor type fifth wheel mounted on cross beam between wheel pairs
JPH1159431A (en) * 1997-08-11 1999-03-02 Mitsubishi Heavy Ind Ltd Unmanned carrier
WO2012110397A1 (en) * 2011-02-14 2012-08-23 Digital Consult Integral AG Dolly and use of a dolly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2565771A (en) * 2017-08-16 2019-02-27 Campbell Trevor Height-adjustable wheel assembly
WO2019123461A1 (en) * 2017-12-19 2019-06-27 Nir Yifrah Steerable multi-terrain cart and method therefor
US11643123B2 (en) 2017-12-19 2023-05-09 Nir Yifrah Steerable multi-terrain cart and method therefor
CN110901327A (en) * 2019-12-04 2020-03-24 三一重工股份有限公司 Active suspension system, automatic guided transport vehicle and pressure adjusting method thereof

Also Published As

Publication number Publication date
GB201311155D0 (en) 2013-08-07

Similar Documents

Publication Publication Date Title
US20140375005A1 (en) Caster switch unit for carry-and-transport device
GB2515480A (en) Caster switch unit for carry-and-transport device
US9834242B2 (en) Smart dolly
WO2014075679A8 (en) Castor control system
CN204250125U (en) High-pressure service dolly
GB201207983D0 (en) Trolley
US9370458B2 (en) Personal lifting assembly
CN202277459U (en) Patient moving device for surgical nursing
CN103976560A (en) Foldable lifting tea table
CN204106450U (en) A kind of controllable electromagnetic damp type nursing handcart
CN205359825U (en) Nimble wheelchair
JP2016022836A (en) Hand cart
CN203646668U (en) Draw-bar box capable of climbing staircase
GB201114449D0 (en) Barrow
CN105078069A (en) One-seat sofa capable of being conveniently moved and positioned
TWM491607U (en) Pusher with function of maintaining balance
CN204468481U (en) A kind of collapsible and be suitable for do shopping old people's electric wheelchair
JP2015147558A5 (en)
CN203946129U (en) A kind of new chassis
CN204124153U (en) A kind of Multifunctional cart
CN203081809U (en) Draw bar fan
GB201211526D0 (en) Hand operated pallet truck and method of operation
CN204521378U (en) Folding medical nursing handcart
CN202128134U (en) Wheel sleeve for supporting leg
CN104586590A (en) Movable type base for medical cart

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)