WO2006025245A1 - ハンドル接続構造 - Google Patents
ハンドル接続構造 Download PDFInfo
- Publication number
- WO2006025245A1 WO2006025245A1 PCT/JP2005/015396 JP2005015396W WO2006025245A1 WO 2006025245 A1 WO2006025245 A1 WO 2006025245A1 JP 2005015396 W JP2005015396 W JP 2005015396W WO 2006025245 A1 WO2006025245 A1 WO 2006025245A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- handle
- shaft
- connection structure
- gear
- bracket
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
- G05G1/08—Controlling members for hand actuation by rotary movement, e.g. hand wheels
- G05G1/082—Controlling members for hand actuation by rotary movement, e.g. hand wheels having safety devices, e.g. means for disengaging the control member from the actuated member
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/05—Parts, details or accessories of beds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/05—Parts, details or accessories of beds
- A61G7/0507—Side-rails
- A61G7/0512—Side-rails characterised by customised length
- A61G7/0513—Side-rails characterised by customised length covering particular sections of the bed, e.g. one or more partial side-rail sections along the bed
- A61G7/0514—Side-rails characterised by customised length covering particular sections of the bed, e.g. one or more partial side-rail sections along the bed mounted to individual mattress supporting frame sections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G1/00—Stretchers
- A61G1/04—Parts, details or accessories, e.g. head-, foot-, or like rests specially adapted for stretchers
- A61G1/048—Handles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/08—Apparatus for transporting beds
Definitions
- the present invention relates to a connection structure of an operation lever and a handle used in a bed transfer device for a hospital, and in particular, detects an operation force of a handle and drives an electric motor based on the detected operation force.
- the present invention relates to a technique that is effective when applied to the handle of an electric transfer device that supplies the electric power.
- a large number of transfer devices powered by motors such as electric beds and stretchers, food carts and cargo carts are used.
- a driving wheel driven by an electric motor is provided on a main body frame to which a caster is attached, and assist force at the time of movement is supplied by the driving wheel.
- An electric motor, a battery for power supply, a controller for motor control, etc. are attached to the main body frame.
- a mat is placed for a bed, and a cargo bed is provided for a cart.
- the main body frame is also provided with a handle for moving the transport device back and forth and left and right.
- a handle for moving the transport device back and forth and left and right.
- the height and position of this handle can be adjusted according to the physique and posture of the operator, and in many cases, the handle can be stored appropriately when not in use.
- Patent Document 1 discloses an operation lever for a bed transport apparatus in which the operation height position can be adjusted.
- Patent Document 1 a pair of operation levers are rotatably provided in the operation unit.
- the lock pin is operated by pressing the lock release button. Release the lock by separating the latch hole force of the lever shaft.
- the operation lever is rotated to adjust the rotation angle of the gripping part, and when the height becomes easy to operate, the lock release button is released.
- the locking member moves in the axial direction, the lock pin fits into the locking hole of the lever shaft, and the grip portion of the operating lever is locked at the adjustment position.
- Such adjustment is also used when the handle is retracted when not being transported.
- Patent Document 2 Japanese Patent Laid-Open No. 2001-171524
- Patent Document 3 Japanese Patent Laid-Open No. 2001-180500
- An operating device for an electric vehicle that generates force is disclosed.
- the operation lever is held in a neutral position by compression springs attached in the longitudinal direction of the lever.
- the lower end of the operating lever is connected to the rotary shaft of the potentiometer via a driving member.
- Patent Document 1 JP-A-8-317953
- Patent Document 2 JP 2001-171524 A
- Patent Document 3 JP 2001-180500 A
- the lever attached to the operation handle of the transport apparatus is generally long.
- a very large force acts on the base of the lever.
- the lever is connected to the lever shaft at the base, and a large force is applied to this connecting part by the moment generated by the lever operating force.
- a thick lever shaft or lock is used in order to ensure sufficient strength at the coupling portion. There was a problem that a pin was required and the mechanism was enlarged.
- An object of the present invention is to provide a handle connection structure in which the strength of the coupling portion is high V while it can be easily stored by a simple operation.
- the handle connection structure of the present invention includes a lever shaft fixed to a handle base, and the lever A shaft fixed to the shaft and extending in the direction of the central axis of rotation of the lever shaft, a bracket rotatably attached to the shaft, a first gear formed on the lever shaft, and the bracket. And a gear member capable of meshing with the second gear, and having a connecting member that is disengaged from the first gear by moving along the rotational axis direction.
- the lever shaft can be selectively rotated by operating the connecting member
- the handle can be stored by rotating around the lever shaft, and the rotation of the handle can be inhibited.
- the handle can be fixed with high strength in the retracting direction.
- the lever shaft and the bracket are integrally connected by the shaft and the connecting member, the lever shaft and the bracket are strongly connected to each other when the lever operating force is transmitted to the bracket, and the force and backlash are small. Accordingly, the transmission strength of the force in the operation direction is ensured, and the detection accuracy of the operation force is improved.
- the handle connection structure may further include a first elastic member that urges the connecting member in the first gear direction along the rotation center axis direction.
- a first elastic member that urges the connecting member in the first gear direction along the rotation center axis direction.
- a cover member that operates integrally with the connecting member is provided outside the lever shaft, and a display unit that displays a combined state of the first gear and the connecting member on the cover member May be provided.
- the cover member since the cover member operates integrally with the connecting member when releasing the engagement state of the first gear and the connecting member, only the cover member is moved in the engaging direction when the connecting member and the cover member are moved in the releasing direction. There is no moving to. For this reason, it is possible to prevent erroneous display of the display portion caused by the mismatch of the operation of the cover member and the connecting member.
- a braking unit for applying a rotational resistance may be provided.
- the braking portion is attached to the lever shaft, attached to the second elastic member that presses the bracket along the direction of the rotation center axis, and attached to the shaft so that movement in the axial direction is restricted, It is good also as a structure which has the control member pressed by the urging
- the lever shaft, the shaft, and the bracket may be formed in a hollow structure, and a hole through which an electrical wiring can be passed is provided in each of the lever shaft, the shaft, and the bracket.
- electrical wiring can be routed through the inside of the connection structure portion, and electrical parts such as switches can be installed on the handle without being troubled by wiring processing.
- a seal member to which the electrical wiring is attached in a watertight state may be attached to the hole of the bracket in a watertight state. This suppresses the outflow of liquid to the outside of the bracket internal force through the electrical wiring. For example, when the bracket is attached to the handle operating force detection device, it is possible to prevent the liquid from entering the detection device side. .
- the bracket may be provided with a drain hole that opens to the end surface on the lever shaft side of the bracket and communicates with the internal space of the bracket.
- the bracket may be attached to an operation force detection device that detects an operation force of the handle.
- the steering wheel operating direction and the steering wheel rotating direction can be set in different directions, thereby suppressing the deviation of the zero point position of the operating force detecting device due to the steering wheel rotation.
- the operating force detection device is rotatably supported by a fixed block disposed in a housing and is fixed to one end of the bracket, and is inserted into the hollow shaft. The other end is fixed to the hollow shaft. It may be configured to have a fixed torsion bar and a potentiometer connected to the torsion bar.
- the operating force detection device is provided with a transmission gear fixed to the other end side of the torsion bar, and a driven gear fixed to the input shaft of the potentiometer and meshed with the transmission gear.
- the number of teeth may be smaller than the number of teeth of the transmission gear.
- the handle may be attached to a power-assisted transfer device to which traveling assist force is applied by drive wheels driven by an electric motor.
- a lever shaft fixed to the handle base a shaft fixed to the lever shaft and extending in the direction of the rotation center axis of the lever shaft, and rotatably attached to the shaft.
- the first gear and the first gear formed on the lever shaft and the second gear formed on the bracket are provided with gear teeth that can be engaged with the first gear. Since the lever has a connecting member that can be released, the lever shaft can be selectively rotated by operating the connecting member, and the handle can be stored by rotating around the lever shaft. The rotation can be prevented by the gear meshing, and the handle can be fixed with high strength in the retracted direction.
- lever shaft and the bracket are connected by the shaft and the connecting member, it is possible to reduce the backlash that increases the connection strength between the lever shaft and the bracket when the lever operating force is transmitted to the bracket. Therefore, the force transmission strength in the steering direction is ensured, and the detection accuracy of the operating force is improved.
- the connecting member does not easily disengage the first gear force. And the first gear can be more reliably engaged. Also, the first gear force is released The connecting member in the engaged state can be engaged with the first gear by the biasing force of the first elastic member, and the connecting member released from the engagement with the first gear can be automatically returned to the engaged state. Become. Therefore, even when the handle can be turned by moving the connecting member, the connecting member can be automatically returned to lock the turning of the handle.
- the lever shaft, shaft and bracket By making the lever shaft, shaft and bracket hollow, and providing holes through which the electrical wiring can be inserted, electrical wiring can be routed through the inside of the connection structure portion. Electric parts such as switches can be installed in the notebook without any trouble.
- the electrical wiring can be attached in a watertight state to the hole through which the electrical wiring of the bracket is inserted. By attaching a sealing member in a watertight state, it is possible to prevent liquid from flowing out from the inside of the bracket through the electrical wiring .
- FIG. 1 is a front view showing a configuration of a hospital electric bed to which a handle connection structure according to an embodiment of the present invention is applied.
- FIG. 2 is a plan view showing an outline of the electric bed shown in FIG.
- FIG. 3 is a perspective view showing a configuration of a drive unit of the electric bed in FIG. 1.
- FIG. 4 is an explanatory diagram showing a connection structure between a drive unit and a lift actuator.
- FIG. 5 is an explanatory view showing a configuration of a node and a dollar attached to the electric bed in FIG. 1.
- FIG. 6 is a cross-sectional view showing a configuration of a connection portion between the handle and the sensor device.
- FIG. 7 is a front view of the handle and the sensor device.
- FIG. 8 is a partial cross-sectional side view of the handle and the sensor device.
- FIG. 9 is a cross-sectional view showing the internal structure of the sensor device.
- FIG. 10 (a) is a side view of the lever shaft, and (b) is a front view of the lever shaft.
- FIG. 11 is a front view of the shaft.
- FIG. 12 (a) is a cross-sectional view showing the structure of the joint between the lever shaft and the rear bracket, and (b) is a joint of (a) (C) is a front view of a stainless steel ring, and (d) is a front view of a resin ring.
- FIG. 13 (a) is a side view of the rear bracket, and (b) is a front view of the rear bracket.
- (a) is a cross-sectional view showing the structure of the brake part
- (b) is a front view of a resin ring used in the brake part
- (c) is a front view of the stainless steel ring.
- FIG. 15 (a) is a front view of the ring gear
- FIG. 15 (b) is a cross-sectional view of the ring gear.
- Belleville spring (second elastic member) Stainless steel ring Large diameter part
- FIG. 1 is a front view showing a configuration of an electric bed for a hospital to which a handle connection structure according to an embodiment of the present invention is applied
- FIG. 2 is a plan view showing an outline of the electric bed in FIG.
- the electric bed for hospitals in Figs. 1 and 2 consists of a drive unit 1 and a bed unit 2.
- the drive unit 1 houses a motor and various actuators, and the bed unit 2 has a mat 3 mounted thereon.
- the bed 2 is supported by an arm 4 attached to the drive unit 1.
- the arm 4 is driven by the drive unit 1 so that the height and posture of the bed unit 2 can be changed by moving the arm 4 up and down.
- FIG. 3 is a perspective view showing the configuration of the drive unit 1.
- the drive unit 1 has a configuration in which a drive unit 12, a lift actuator 13 and the like are arranged on a steel frame 11.
- the steel frame 11 is composed of a main frame 11a extending in the front-rear direction and a connecting bar 1 lb extending in the width direction so as to connect between the main frames 11a.
- Casters 14 are attached to both ends of the main frame 1 la on the lower surface side.
- a synthetic resin cover 15 is attached to the frame 11 as shown in FIG. 1, and FIG. 3 shows a state in which the force bar 15 is removed.
- the drive unit 12 is placed on the motor base 16.
- Two sets of DC motor 17 (17L, 17R) and reduction mechanism 18 (18L, 18R) are installed.
- Two rotating shafts 19 project from the left and right sides of the drive unit 12.
- the rotation of the motor 17 is decelerated by the deceleration mechanism 18 and output to the rotary shaft 19.
- Drive wheels 21 (21L, 21R) are fixed to each rotary shaft 19.
- the drive wheel 21 is composed of a wheel 22 and a rubber tire 23 fixed to the rotary shaft 19.
- the drive unit 12 is further provided with a vehicle speed sensor (not shown).
- the vehicle speed sensor is composed of a multipolar magnetized magnet attached to the rotating shaft of the motor 17 and a magnetic detection element that is disposed in the vicinity of the magnet and outputs a pulse signal when the magnetic pole changes.
- a rotation pulse signal is output from the magnetic detection element according to the motor rotation speed.
- the rotational speed of the motor 17 and the rotational speed of the drive wheel 21 have a correlation, and the rotational speed of the drive wheel 21, that is, the vehicle speed can be detected by detecting the motor rotational speed by the vehicle speed sensor.
- FIG. 4 is an explanatory diagram showing a connection structure between the drive unit 12 and the lift actuator 13.
- the base 24 a of the tower 24 is rotatably supported by the arm 27 by a pivot 26.
- the arm 27 is fixed to the connecting bar l ib, and the motor base 16 is supported by the frame 11 so as to be swingable in the vertical direction (X direction in FIG. 4) around the pivot 26.
- a long hole 28 is formed in the upper part of the tower 24.
- a pin 31 attached to the plunger 29 is inserted into the long hole 28 so as to be movable in the front-rear direction (left-right direction in the figure).
- the blower 29 is attached to the upper part of the tower 24 so as to be movable in the front-rear direction, and is connected to the plunger 33 of the lift actuator 13 via the panel 32.
- the elevator actuator 13 is driven by a DC motor 34. As the DC motor 34 rotates, the plunger 33 moves in the Y direction in FIG.
- the left end of the lifting / lowering actuator 13 in the figure is supported by a bracket 35 fixed to the connecting bar l ib so as to be swingable.
- the motor base 16 is connected to the lifting / lowering actuator 13 via the panel 32.
- the lifting / lowering actuator 13 is activated and the plunger 33 is extended, the panel 32, the plunger 29, The tower 24 is pushed through the pin 31 and the motor base 16 rotates clockwise around the pivot 26 in FIG.
- the drive wheel 21 moves to the floor surface 25 and is pressed against the floor surface 25 with a predetermined ground load.
- the plunger 33 contracts, the motor base 16 rotates counterclockwise around the pivot 26.
- the drive wheel 21 is detached from the floor surface 25 and raised, and stored in a position separated from the floor surface 25.
- the frame 11 is further provided with a battery 36 for power supply, a controller 37 for motor control, an actuator 38 for bed attitude control, and the like.
- the notch 36 supplies power to the motors 17, 34, the controller 37, the actuator 38, and the like.
- the controller 37 is connected to the control panel 8 (see Fig. 5), and controls the drive of each motor, actuator, etc. in accordance with an operator input instruction.
- safety fences 5 are attached to both sides of the bed 2.
- a handle 6 for moving the bed is attached to the front end side (the user's head side) of the bed portion 2.
- front and rear mean the longitudinal direction of the bed, and side portions mean both ends in the width direction (left and right direction) orthogonal to the longitudinal direction.
- one handle 6 is provided on each of the left and right sides (6L, 6R), and is connected to a sensor device 7 (operation force detection device) provided at the front end of the bed portion 2. .
- the sensor device 7 detects an operation load applied to the needle 6 when the bed moves.
- a control panel 8 is disposed between the handles 6 and includes a power switch 8a, an emergency stop switch 8b, a bed lifting switch 8c, an LED display panel 8d, and the like.
- FIG. 6 is a cross-sectional view showing a configuration of a connection portion between the handle 6 and the sensor device 7
- FIG. 7 is a front view of the handle 6 and the sensor device 7
- FIG. 8 is a side view of a partial cross section of the handle 6 and the sensor device 7.
- FIG. 9 and FIG. 9 are sectional views showing the internal structure of the sensor device 7.
- a stainless lever shaft 50 is attached to the base of the handle 6.
- 10 (a) is a side view of the lever shaft 50
- FIG. 10 (b) is a front view of the lever shaft 50.
- the lever portion 6a of the handle 6 is attached to the lever shaft 50.
- the lever shaft 50 includes a main body 51, a screw projectingly provided on the side of the main body 51, a ring mounting portion 52, and a first gear portion 53 formed on the left end side of the main body 51 in FIG. And force is composed.
- the handle attachment portion 52 is formed in a cylindrical shape, and the end of the lever portion 6a is press-fitted and fixed to the outer periphery thereof.
- the connection between the lever shaft 50 and the handle mounting part 52 has a cover 5 4a and 54b are packaged.
- a wiring hole 55 is provided at the center of the handle attachment portion 52.
- a shaft hole 56 is formed at the center of the main body 51.
- a shaft 57 is press-fitted and fixed in the shaft hole 56.
- FIG. 11 is a front view of the shaft 57.
- the shaft 57 is formed in a hollow cylindrical shape, one end side is fixed to the shaft hole 56, and the other end side protrudes from the shaft hole 56.
- An end cap 40 made of synthetic resin is attached to one end of the shaft 57.
- a wiring hole 58 is formed in the central portion of the shaft 57, and a connection hole 59 communicating with the wiring hole 58 is provided on a side surface on one end side thereof.
- the connection hole 59 is positioned so as to communicate with the wiring hole 55 of the handle mounting portion 52.
- a notch 60 and a C-ring groove 61 are formed on the other end side of the shaft 57.
- a large diameter part 51a and a small diameter part 51b are formed on the outer periphery of the main body 51.
- the large diameter part 51a is formed outside the main body part 51 (right side in FIG. 10 (a)), and the small diameter part 51b is formed inside the main body part 51 (left side in FIG. 10 (a); sensor device 7 side).
- Two convex portions 70a are formed in the circumferential direction at the back of the small diameter portion 51b and at the boundary with the large diameter portion 51a.
- Two extending portions 70b extending in the axial direction are formed in the circumferential direction on the small diameter portion 51b side of the large diameter portion 51a.
- the first gear portion 53 includes a tooth portion 63 having gear teeth 62 protruding at equal intervals, and a notch portion 64 formed by removing only one gear tooth 62.
- the notches 64 are equally divided into four portions at 90 ° intervals in the circumferential direction.
- a circular recess 65 is formed at the center of the end face of the first gear portion 53.
- a fitting groove 66 is formed on the outer periphery of the recess 65 over a substantially half circumference.
- a disc spring (second elastic member) 67 and a stainless steel ring 68 are inserted into the recess 65.
- the large-diameter portion 69 see FIG. 12 (c)
- the stainless steel ring 68 is prevented from rotating and accommodated in the recess 65.
- FIG. 13 (a) is a side view of the rear bracket 71
- FIG. 13 (b) is a front view thereof.
- the rear bracket 71 includes a main body portion 72 and a second gear portion 73 formed on the right end side of the main body portion 72 in FIG. 13 (a).
- a shaft fixing portion 74 having a semicircular cross section is recessed in the left end portion of the main body 72.
- the rear bracket 71 is also formed in a hollow shape in the same manner as the lever shaft 50, and the shaft 57 is rotated by a bearing material 76 in the shaft hole 75. Inserted.
- a circular recess 77 is formed in the center of the end face of the second gear portion 73.
- a resin ring 78 made of synthetic resin for example, fluorine resin
- the second gear portion 73 is also formed with a tooth portion 81 having gear teeth 79 protruding at equal intervals and a notch portion 82 formed by removing only one gear tooth 79.
- the notches 82 are equally divided into four portions at intervals of 90 degrees in the circumferential direction, but are formed at positions shifted by 20 degrees from the vertical and horizontal directions.
- FIG. 14 is an explanatory diagram showing the configuration of the braking portion 84.
- a synthetic resin (for example, fluorine resin) resin ring 85 and a stainless steel ring 86 are extrapolated to the tip of the shaft 57 protruding from the shaft hole 75.
- the stainless steel ring 86 is formed with a positioning projection 87 on the inner peripheral side.
- the stainless steel ring 86 is attached in a state where the positioning protrusion 87 is fitted in the notch 60 of the shaft 57, and is attached to the shaft 57 while being prevented from rotating.
- a C ring 88 is attached to the outside of the stainless ring 86.
- the C ring 88 is installed in the C ring groove 61 of the shaft 57.
- the C-ring 88 is attached while pressing the rear bracket 71 toward the lever shaft 50 side.
- the disc spring 67 accommodated in the recess 65 of the lever shaft 50 is pressed by the grease ring 78 accommodated in the recess 77 of the rear bracket 71.
- a gap for inserting the resin ring 85 and the stainless ring 86 is formed between the C-ring groove 61 of the shaft 57 and the pressing surface 83a of the step portion 83.
- the resin ring 85 and the stainless steel ring 86 are extrapolated to the shaft 57, and the C ring 88 is mounted while resisting the urging force of the disc spring 67.
- a seal material mounting portion 89 is further provided inside the main body 72, and an internal seal material 91 made of rubber is attached thereto.
- a wiring 92 extending from the sensor device 7 side is attached to the inner sealing material 91.
- the inner sealing material 91 has a bottomed cylindrical shape formed in a step shape, and the outer peripheral portion 91a is fitted and fixed to the inner wall 89a of the sealing material mounting portion 89.
- internal A seal hole 93 is formed at the center of the seal material 91, and the wiring 92 is inserted in a watertight state.
- the wiring 92 is connected to the wiring 95 through the connector 94.
- the wiring 95 is connected to an operation switch 96 (see FIG. 7) provided in the drip portion 6a of the handle 6 through the wiring hole 58, the connection hole 59, the wiring hole 55, and the inner space of the handle 6.
- the wirings 92 and 95 can be wired inside the connection part by providing the wiring hole 58, the connection hole 59, the wiring hole 55, and the like.
- the operation switch 96 can be disposed on the grip 6b of the handle 6, and the cable can be wired without exposing the wiring to the outside of the handle.
- the sealing with respect to the sensor device 7 can be ensured by the internal sealing material 91, the waterproofness in the sensor device 7 is improved, an expensive corrosion-resistant material is not required, and the device cost can be reduced.
- a drain hole 97 is provided in the shaft hole 75 of the main body 72. As shown in FIG. 13 (b), the drain hole 97 opens at the end face of the second gear portion 73 and extends to the step portion 83 along the shaft hole 75. The opening on the step 83 side of the drain hole 97 communicates with the internal space of the shaft 57. Further, the drain hole 97 has a tapered shape inclined downward toward the end face on the second gear portion 73 side. As a result, the water stored in the shaft 57 or the like passes through the drain hole 97 and is discharged from the opening on the second gear portion 73 side.
- the bed is manufactured for a hospital, and the entire bed may be washed and sterilized. At that time, there is a possibility that cleaning water may enter the connection between the handle 6 and the sensor device 7, and if left unattended, it may cause malfunction. For this reason, in the bed, the water accumulated in the connecting portion by the drain hole 97 is also discharged to the outside of the device by the end face force of the second gear portion 73, thereby preventing problems due to the storage of the washing water.
- FIG. 15 (a) is a front view of the ring gear 98
- FIG. 15 (b) is a sectional view thereof.
- the ring gear 98 is formed in a cylindrical shape, and internal teeth (gear teeth) 99 are formed therein.
- the inner teeth 99 are provided with tooth portions 101 and engaging projections 102 in a form corresponding to the first gear portion 53 and the second gear portion 73.
- Gear teeth 103 protrude from the tooth portion 101 at equal intervals and are formed so as to be able to be engaged with the gear teeth 62 and 79 of the first and second gear portions 53 and 73.
- Engagement protrusion 102 is formed by connecting adjacent gear teeth 103. It is divided into four equal parts at intervals of 90 degrees in the circumferential direction. The engaging protrusion 102 is formed so as to be engageable with the notches 64 and 82 of the first and second gear portions 53 and 73.
- a sleeve mounting groove 104 is formed on the outer periphery of the ring gear 98.
- a sleeve 105 (cover member) made of synthetic resin is attached to the sleeve mounting groove 104.
- the sleeve 105 is formed in a cylindrical shape with a part cut away, and is attached to the outer periphery of the main body 51 of the lever shaft 50 and accommodated in the small diameter portion 51b.
- a notch (not shown) is formed at the outer end of the sleeve 105, and the protruding portion 70a of the small diameter portion 51b and the extending portion 70b of the large diameter portion 51a are engaged with this notch.
- the sleeve 105 is disposed outside the lever shaft main body 51 so as to be movable in the axial direction (left and right in FIG. 6), and operates integrally with the ring gear 98. Further, since the ring gear 98 is fixedly fitted to the rear bracket 71 with respect to the rotation direction, the sleeve 105 operates in conjunction with the lever shaft main body 51 on the sleeve mounting groove 104.
- a return spring 106 (first elastic member) is attached to the left end portion of the ring gear 98.
- One end side of the return spring 106 is in contact with the ring gear 98, and the other end side is in contact with a stepped spring receiving portion 107 formed on the outer periphery of the rear bracket 71.
- the return spring 106 biases the ring gear 98 in the direction of the lever shaft 50 (rightward in FIG. 6).
- the gear tooth 103 is engaged with the gear teeth 62 and 79
- the ring gear 98 is held with the engaging protrusion 102 engaged with the notches 64 and 82
- the ring gear 98 is easily detached from the first gear portion 53. Shina! Become like a nephew!
- the sensor device 7 is inserted into a housing 108 attached to the bed 2, a fixed block 109 disposed in the housing 108, a hollow shaft 111 rotatably supported by the fixed block 109, and a hollow shaft 111.
- a rear bracket 71 is fixed to the hollow shaft 111, and the handle 6 is installed so as to be swingable in the front-rear direction of the bed, as shown in FIG. When the handle 6 swings, the torsion bar 112 is twisted accordingly.
- this torsional displacement is measured using the potentiometer 113, and the operation force applied to the bed by the controller 37 is calculated based on the measured value.
- the hollow shaft 111 On the outer peripheral portion of the hollow shaft 111, two knurled portions 114 are formed. Hollow The shaft 111 is coupled to the shaft fixing portion 74 of the rear bracket 71 using the knurled portion 114 while being rotated. The shaft fixing portion 74 is fixed to the bracket 115 with the hollow shaft 111 interposed therebetween, and the rear bracket 71 rotates around the hollow shaft 111 by causing the knurled portion 114 to bite into the inner peripheral surface of the shaft fixing portion 74 or the bracket 115. Fixed
- a torsion bar 112 is disposed inside the hollow shaft 111.
- a torsion bar 116 is formed with a selection portion 116 at both ends of the torsion bar 112.
- One end side (the left end side in FIG. 9) of the torsion bar 112 is fixed to the fixing block 109 via the fixing plate 117.
- the other end side (the right end side in FIG. 9) of the torsion bar 112 is fixed to the right end of the hollow shaft 111.
- a selection is also formed on the inner periphery of the right end of the hollow shaft 111, and the selection portion 116 of the torsion bar 112 is fixed to the hollow shaft 111 by mating with the selection.
- the torsion bar 112 is fixed to the fixed block 109 and the other end side is fixed to the hollow shaft 111. Therefore, when the handle 6 is swung and the hollow shaft 111 is rotated accordingly, the torsion bar 112 having one end fixed is twisted with the rotation of the hollow shaft 111, and a torsional displacement is generated.
- a transmission gear 118 is further fixed to the right end side of the torsion bar 112, and this transmission gear 118 rotates integrally with the torsion bar 112 and amplifies the torsion amount of the torsion bar 112.
- the transmission gear 118 is meshed with a driven gear (not shown).
- the driven gear is fixed to the input shaft (not shown) of the potentiometer 113.
- the torsional displacement of the torsion bar 112 that is, the displacement of the handle 6 is directly transmitted to the potentiometer 113 by the gear.
- a lever is not interposed therein, so that a decrease in detection accuracy due to rattling of the lever can be suppressed.
- a rubber external seal material 119 is attached to the outside of the housing 108.
- One end of the outer seal material 119 is fixed to the outside of the opening of the housing 108, and the other end is fixed to the outside of the main body 72 of the rear bracket 71.
- the waterproofness in the housing 108 is ensured while allowing the operation of the rear bracket 71 accompanying the operation of the handle 6.
- the lever shaft 50 and the rear bracket 71 are coupled by the gear meshing, and a high strength is secured against the force acting in the handle turning direction. Also, the lever shaft 50 and the rear bracket 71 are connected by the shaft 57 with respect to the handle tilting direction, and the outer periphery of the first and second gear portions 53 and 73 is also fixed by the ring gear 98. Compared with pin connection, the support strength of the handle 6 is greatly improved.
- the hollow shaft 111 rotates accordingly.
- a torsional displacement occurs in the torsion bar 112
- the transmission gear 118 rotates only by the displacement.
- the rotation of the transmission gear 118 is transmitted to the potentiometer 113 through the driven gear.
- the potentiometer 113 outputs a signal corresponding to the operation load of the handle 6. Therefore, by grasping the output change of the potentiometer 113, the operation load of the handle 6 can be detected.
- the output of the potentiometer 113 which is a signal corresponding to the operation load of the handle 6, is sent to the controller 37. Further, the controller 37 stores in advance a map indicating the relationship between the output value of the potentiometer 113, that is, the operation load of the handle 6 and the optimum driving assisting force corresponding thereto, and the motor is referred to by referring to this map. Drive control of 17 etc. is performed.
- the traveling direction of the bed can be controlled by comparing the outputs of the left and right sensor devices 7. For example, when it is detected that the pushing force on the left handle 6L is large, the operator determines that the bed is to be bent to the right, increases the output of the motor 17L, and turns the bed to the right. Conversely, when the force pushing the right handle 6R is large, the operator determines that the bed is to be bent to the left and raises the output of the motor 17R to move the bed to the left. Turn in the direction.
- the handle 6 can be stored in the bed when the conveyance is completed.
- the operator first moves the sleeve 105 in the axial direction (leftward in FIG. 6) against the urging force of the return spring 106, and shows the one-dot chain line from the locked position shown by the solid line in FIG. Move to the release position.
- the ring gear 98 is disengaged from the first gear portion 53, and the engagement between the gear teeth 103 and the gear teeth 62 and the engagement between the engagement protrusions 102 and the notch portions 64 are released.
- the coupling state between the lever shaft 50 and the rear bracket 71 is released, and the lever single shaft 50 becomes rotatable with respect to the rear bracket 71.
- the lever shaft 50 may be in a free state and rotate by its own weight.
- the braking portion 84 is provided at the connection portion between the lever shaft 50 and the rear bracket 71, the free rotation of the lever shaft 50 is restricted by the holding force. In other words, even if the sleeve 105 is moved, the lever shaft 50 is held at the current position, and the handle is prevented from being accidentally tilted.
- the sleeve 105 is provided with a confirmation window 121 (display section).
- a red display force is displayed.
- a green display is displayed.
- the state of the Nord 6 can be determined at a glance.
- the ring gear 98 is in the release position, the handle 6 is in a rotatable state, and the confirmation window 121 displays that the operator carelessly touches the sleeve 10 5 or puts force into it. To avoid turning the handle 6 ing.
- the sleeve 105 since the sleeve 105 operates integrally with the ring gear 98, only the ring gear 98 can be moved to the unlocked position, and the state of locking and unlocking the handle 6 can be displayed without error. be able to.
- the sleeve 105 when the operator moves the sleeve 105 to free the lever shaft 50 and rotates the handle 6 in this state, the sleeve automatically rotates at the next engagement position rotated 90 degrees. 1 05 returns, and handle 6 is locked again. That is, in the connection structure, the handle 6 can be rotated by the movement of the sleeve 105, and the rotation is automatically locked at a predetermined storage position. Therefore, the handle 6 can be retracted very easily. At this time, the handle 6 does not rotate freely due to its own weight, so that the operability is high.
- the handle 6 can be retracted by rotating around the lever shaft 50, and the lever force 50 can also be used as an operating force transmission means during the conveying operation. That is, in the connection structure, the handle storage structure and the operating force transmission structure are integrated, so that the handle connection portion can be made compact. In addition, since the strength of the connecting part is high and the backlash is small, both the storage direction (rotation direction) is fixed and the transmission of force in the operation direction (tilting direction) is ensured. This also improves the detection accuracy of highly maneuverable operating forces.
- the storing direction of the handle 6 is perpendicular to the handle operating direction during conveyance as shown in FIG. For this reason, it is difficult for the setting of the zero point adjustment that is performed when detecting the handle operating load to be confused.
- the zero point is likely to go wrong when the storage operation is performed.
- the handle 6 stored in the direction perpendicular to the operation direction a large load change does not occur in the operation direction due to the retracting operation! Therefore, the neutral position of the steering wheel can be maintained without performing complicated adjustment work again, and the operation load can be accurately detected.
- the handle connection structure of the present invention is applied to a hospital bed.
- the application target is not limited to the bed, it can be widely applied to general transport devices regardless of whether or not it is electrically powered, such as stretchers, food carts, wheelchairs, and electric carts for cargo handling.
- the present invention can be applied to a handle in general that needs to be adjusted in addition to the transport device.
- the set pitch is not limited to 90 degrees, and a 45 degree interval or the like is appropriately set. It can be set. Furthermore, it is also effective as means for adjusting the handle angle in accordance with the operator's physique by making the setting pitches of the notches 64 and 82 strong without providing an engaging projection. In this case, since it is possible to fit the ring gear 98 with a small force, it is more advantageous in strength than a device in which a hole is formed on the lever shaft 50 to adjust the storage position.
- the configuration in which the drive unit 12 is arranged on one motor base 16 and the drive wheel 21 is lifted and lowered by the single lift actuator 13 is shown.
- a separate drive unit 12 may be used for each 21, and they may be mounted on separate motor bases 16 and individually actuated by the two lift actuators 13.
Landscapes
- Health & Medical Sciences (AREA)
- Nursing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Handcart (AREA)
- Mechanical Control Devices (AREA)
- Invalid Beds And Related Equipment (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006531965A JP4860473B2 (ja) | 2004-09-03 | 2005-08-25 | ハンドル接続構造 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-257495 | 2004-09-03 | ||
| JP2004257495 | 2004-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006025245A1 true WO2006025245A1 (ja) | 2006-03-09 |
Family
ID=35999902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/015396 Ceased WO2006025245A1 (ja) | 2004-09-03 | 2005-08-25 | ハンドル接続構造 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4860473B2 (ja) |
| CN (1) | CN100549901C (ja) |
| WO (1) | WO2006025245A1 (ja) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013523249A (ja) * | 2010-03-29 | 2013-06-17 | コリア インスティテュート オブ インダストリアル テクノロジー | リング状操作部を備えたリフト装置 |
| US9173797B2 (en) | 2010-12-13 | 2015-11-03 | Hill-Rom Services, Inc. | Siderail assembly for patient support apparatus |
| US9205009B2 (en) | 2012-12-17 | 2015-12-08 | Hill-Rom Services, Inc. | Patient support apparatus having movable handles |
| US9756954B2 (en) | 2010-11-10 | 2017-09-12 | Hill-Rom Services, Inc. | Siderail assembly for patient support appartatus |
| CN117184009A (zh) * | 2023-09-21 | 2023-12-08 | 宁波赛福汽车制动有限公司 | 手感模拟器 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5904035B2 (ja) * | 2012-06-29 | 2016-04-13 | 株式会社豊田自動織機 | 搬送補助装置 |
| KR101486881B1 (ko) * | 2012-10-11 | 2015-01-29 | 한국생산기술연구원 | 회전력 조절이 가능한 주행보조시스템이 구비된 이동식 리프팅장치 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60164152U (ja) * | 1984-04-10 | 1985-10-31 | 株式会社 富士鉄工所 | 車両用変速機シフト機構の防振構造 |
| JPS6165526U (ja) * | 1984-09-29 | 1986-05-06 | ||
| JPH01142019U (ja) * | 1988-03-24 | 1989-09-28 | ||
| US5069465A (en) * | 1990-01-26 | 1991-12-03 | Stryker Corporation | Dual position push handles for hospital stretcher |
| JPH08317953A (ja) * | 1995-05-26 | 1996-12-03 | Tokico Ltd | ベッド搬送装置 |
| JPH10338143A (ja) * | 1997-06-09 | 1998-12-22 | Shinko Electric Co Ltd | 駆動補助付小型車両の操作部 |
| JP2005289081A (ja) * | 2004-03-31 | 2005-10-20 | Mitsuba Corp | パワーアシスト付き搬送装置の操作力検出装置及びパワーアシスト付き搬送装置 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60164152A (ja) * | 1984-02-06 | 1985-08-27 | Mitsubishi Electric Corp | ヒ−トポンプ式給湯機 |
| JPS6165526A (ja) * | 1984-09-06 | 1986-04-04 | Omron Tateisi Electronics Co | フアジイ激烈積回路 |
| JPH01142019A (ja) * | 1987-11-27 | 1989-06-02 | Kubota Ltd | 製紙用サクションロール胴部材の製造方法 |
-
2005
- 2005-08-25 JP JP2006531965A patent/JP4860473B2/ja not_active Expired - Fee Related
- 2005-08-25 WO PCT/JP2005/015396 patent/WO2006025245A1/ja not_active Ceased
- 2005-08-25 CN CNB2005800295810A patent/CN100549901C/zh not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60164152U (ja) * | 1984-04-10 | 1985-10-31 | 株式会社 富士鉄工所 | 車両用変速機シフト機構の防振構造 |
| JPS6165526U (ja) * | 1984-09-29 | 1986-05-06 | ||
| JPH01142019U (ja) * | 1988-03-24 | 1989-09-28 | ||
| US5069465A (en) * | 1990-01-26 | 1991-12-03 | Stryker Corporation | Dual position push handles for hospital stretcher |
| JPH08317953A (ja) * | 1995-05-26 | 1996-12-03 | Tokico Ltd | ベッド搬送装置 |
| JPH10338143A (ja) * | 1997-06-09 | 1998-12-22 | Shinko Electric Co Ltd | 駆動補助付小型車両の操作部 |
| JP2005289081A (ja) * | 2004-03-31 | 2005-10-20 | Mitsuba Corp | パワーアシスト付き搬送装置の操作力検出装置及びパワーアシスト付き搬送装置 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013523249A (ja) * | 2010-03-29 | 2013-06-17 | コリア インスティテュート オブ インダストリアル テクノロジー | リング状操作部を備えたリフト装置 |
| US9756954B2 (en) | 2010-11-10 | 2017-09-12 | Hill-Rom Services, Inc. | Siderail assembly for patient support appartatus |
| US9173797B2 (en) | 2010-12-13 | 2015-11-03 | Hill-Rom Services, Inc. | Siderail assembly for patient support apparatus |
| US9205009B2 (en) | 2012-12-17 | 2015-12-08 | Hill-Rom Services, Inc. | Patient support apparatus having movable handles |
| CN117184009A (zh) * | 2023-09-21 | 2023-12-08 | 宁波赛福汽车制动有限公司 | 手感模拟器 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2006025245A1 (ja) | 2008-05-08 |
| CN101010651A (zh) | 2007-08-01 |
| JP4860473B2 (ja) | 2012-01-25 |
| CN100549901C (zh) | 2009-10-14 |
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