JP3510759B2 - Two-way transfer equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an elderly person, a sick person, a physically handicapped person, etc. lying on a bed or the like (hereinafter collectively referred to as a patient).
The present invention relates to a transfer device for transferring an image to another bed or the like.

[0002]

2. Description of the Related Art Conventionally, a transfer device for transferring a patient on a bed to another bed has been proposed (JP-A-60-18).
5552, Japanese Patent Publication No. 62-30771, Japanese Patent Publication No. 51-4038, etc.). In a conventional transfer device, a transfer plate around which a transfer belt is wound is mounted on a traveling carriage so as to be capable of reciprocating in the horizontal direction. At the time of transfer, the traveling carriage is laterally attached to the bed, and the transfer plate is unwound from the traveling carriage onto the bed, so that the transfer plate is dipped into the back of the patient. Then, with the patient placed on the transfer plate, the transfer plate is pulled onto the traveling carriage to move the patient onto the traveling carriage. Next, after the traveling carriage is moved to another target bed, the transfer plate on which the patient is placed is extended onto the bed. After that, the transfer plate is pulled out from the patient's back to lower the patient on the bed, and the transfer is completed.

[0003]

However, in the conventional transfer device, since the transfer plate is extended in one direction from the traveling carriage, first, the transfer plate is extended in the bed side. It is necessary to install the device toward. Further, when transferring a patient from one bed to an adjacent bed or another stretcher, it is necessary to change the direction of the transfer device by 180 degrees, which causes a problem in handling in a narrow hospital room. .

Further, in the conventional transfer device employing the power assist drive system, the transfer lever is operated by pushing the operation lever projecting on the transfer plate together with the transfer plate. In this case, it is necessary to push the operation lever by the same length as the moving distance of the transfer plate, which increases the moving distance of the operating lever, resulting in poor operability.

An object of the present invention is to provide a power assist type transfer device capable of performing transfer operations in two directions different by 180 degrees and having good operability.

[0006]

In the transfer device according to the present invention, the transfer plate (2) is mounted on the carriage (1) and the carriage (1) is mounted on the carriage (1).
It is supported so as to be able to reciprocate between the upper storage position and two projecting positions on both sides of the storage position, and is linked to a reciprocating drive device, and is arranged around the transfer plate (2) in the moving direction. A transfer belt (20) is wound along it. Also, the operation lever that should be operated when moving the transfer plate (2)
(3) is reciprocally movable with respect to the transfer plate (2) and is lockably and unlockably attached to the transfer plate (2) at a plurality of positions, and the operation lever (3) is
A power assist mechanism is connected to allow the reciprocating drive device to exert a driving force corresponding to the operating force.

In the transfer device of the present invention, when the operation lever (3) locked to the transfer plate (2) is operated toward one protruding position, the operation force is detected by the power assist mechanism, A drive command corresponding to the operating force is issued to the reciprocating drive device. This allows the reciprocating drive to
The transfer plate (2) is pushed forward together with the operation lever (3) by exerting a driving force according to the driving command. As a result, the transfer plate (2) moves to an intermediate position between the storage position and the protruding position. At this time, the lock of the operation lever (3) with respect to the transfer plate (2) is released, the operation lever (3) is returned to the original position or a position in the vicinity thereof, and is locked again at this position. After that, when the operation lever (3) is again operated toward the protruding position, the reciprocating drive device similarly drives the operation lever (3).
The transfer plate (2) is pushed forward together with the operation lever (3), and the transfer plate (2) finally reaches the projecting position by repeating the forward and backward movement operation of the operation lever (3). The same applies when the operation lever (3) is operated toward the other protruding position.

As described above, according to the transfer device of the present invention, the transfer plate (2) can be moved to two projecting positions which are opposite to each other by operating the operation lever (3). The patient is moved from the bed onto the trolley by the forward and backward movements with respect to the one protruding position on the bed side on which the patient lies, and the patient is moved by the forward and backward movements with respect to the other protruding position on the bed side, which is the object of transfer. It can be transferred onto the bed.

Further, by repeating the operation of moving the operation lever (3) back and forth as described above, the transfer plate is
Since (2) can be moved in one direction from the storage position to the one protruding position, the movement distance for pushing the operation lever (3) is shortened, and the operation is facilitated.

In a specific configuration, the transfer device further includes an upper half of the transfer belt (20) for a transfer plate (2) or a carriage.
A connection control mechanism (7) for selectively locking one of the (1) and the connection control mechanism (7) is provided.
0) the belt connecting portion, the first locking mechanism provided on the transfer plate (2) and engaged with the belt connecting portion,
It is composed of a second lock mechanism mounted on the carriage (1) to be engaged with the belt connecting portion.

According to this specific structure, the transfer belt (2
0) and the transfer plate (2) are locked to each other, and the transfer plate (2) and the transfer belt (20) move integrally. As a result, the patient mounted on the transfer plate (2) can be moved together with the transfer plate (2) without being dropped from the transfer plate (2).

Further, by engaging the belt connecting portion with the second lock mechanism, the upper half portion of the transfer belt (20) and the carriage
Since (1) and (1) are locked to each other, even if the transfer plate (2) is moved, the belt connecting portion and hence the upper half portion of the belt are not moved. Thereby, when the transfer plate (2) is inserted into the back of the patient or when the transfer plate (2) is pulled out from the back of the patient, the relative speed between the transfer belt (20) and the back of the patient becomes zero, It does not burden the patient.

In another specific configuration, the transfer device further includes lock detecting means for detecting a state in which the belt connecting portion is engaged with the first lock mechanism or the second lock mechanism. Therefore, based on the detection, an insertion mode in which the transfer plate (2) is inserted into the back of the patient on the bed, and a movement in which the patient is mounted on the transfer plate (2) and moved to another bed It is possible to reliably perform the mode switching between the mode and the pull-out mode in which the transfer plate (2) is pulled out from the patient's back on another bed.

[0014]

According to the transfer apparatus of the present invention, when a patient is transferred from one bed to another bed, the other bed exists on either side of the one bed. Even if the operation direction of the operation lever is changed by 180 degrees, the transfer operation can be performed in any direction, so that the device can be easily handled in a small room. Further, at this time, since the transfer plate can be largely moved in one direction by moving the operation lever back and forth in small steps, it is easy to operate the operation lever.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. As shown in FIG. 1, the transfer device according to the present invention comprises a base plate (11) fixed on a carriage (1), and on the base plate (11),
Transfer plate (2) formed by integrating upper plate (21) and lower plate (22)
However, they are supported so as to be reciprocally movable to both sides of the storage position on the carriage (1). That is, as shown in FIG. 5, the base plate (11) is provided with a ridge (12) extending in the moving direction of the transfer plate (2), and the ridge (12) transfers the transfer plate.
(2) The back surface of the lower plate (22) is slidably engaged. Around the upper plate (21) of the transfer plate (2), as shown in FIG.
The transfer belt (20) is wound along the moving direction.

On the carriage (1), one horizontal rod is installed by straddling the transfer plate (2) in a direction orthogonal to its moving direction.
Gate type operation lever consisting of (32) and two vertical rods (33) (33)
(3) is arranged, and the tips of the vertical rods (33), (33) are connected to the drive mechanism (4) constituting the reciprocating drive device. The operation handle (31) is provided at the center of the horizontal rod (32) of the operation lever (3).
Is attached, and by pressing the operating handle (31) in one direction, a drive command corresponding to the operating force is issued to the drive mechanism (4).

The drive mechanism (4) has a motor (4) as shown in FIG.
1) and a pair of left and right pulleys (45) (45) are stretched between the timing belt (42) driven by the motor (41)
And a ball bearing mechanism (44) engaged with the screw shaft (43) and a horizontally extending screw shaft (43) connected to the center of rotation of each pulley (45). ) Is connected to the tip of the vertical rod (33) of the operation lever (3). Therefore, when the operating handle (31) is pressed in one direction, the operating force is detected by a force sensor (not shown), and a drive command corresponding to the detection signal is issued to the motor (41). As a result, the operation lever (3) is power assisted by the drive of the motor (41) and is driven in the operation direction.

A lock mechanism (5) for locking the operation lever (3) to the transfer plate (2) is attached to the back surface of the operation lever (3) as shown in FIG. Lock mechanism
In (5), as shown in FIG. 4, a shaft (52) is rotatably mounted on a base (54) around a vertical axis, and the shaft (52) is
Has a disc-shaped knob (51) at its upper end and is rotationally biased counterclockwise by a torsion spring (53). In addition, the lock pin (5
6) is projectingly provided, and the lock pin (56) can engage with a lock releasing groove (59) and a lock groove (57) provided in the back surface of the base (54). The proximal ends of a pair of left and right L-shaped arms (55) (55) are connected to the outer peripheral surface of the knob (51), and each arm (55)
A lock claw (58) is fixed to the tip of the. On the other hand, as shown in FIG. 3, the upper plate (21) and the lower plate (22) of the transfer plate (2) have a pair of left and right sides to which the lock claws (58) (58) are to be engaged. The engaging grooves (23) (23) are recessed at a plurality of positions at intervals in the front-rear direction.

Therefore, as shown in FIG. 4, the lock pin (56)
Release from the engagement with the unlock groove (59), and then
When the shaft (52) is rotated clockwise against the torsion spring (53) by operating (51) clockwise as indicated by the arrow, the pair of arms (55) (55) move inward as shown by the arrow. As a result, the pair of left and right lock claws (58, 58) also move inward, and engage with the engagement grooves (23, 23).
In this state, by engaging the lock pin (56) with the lock groove (57), the lock mechanism (5) can be held in the locked state shown in FIG. Further, by releasing the engagement of the lock pin (56) with the locking groove (57), the shaft (52) is rotated counterclockwise by the bias of the torsion spring (53), and the pair of left and right arms (55 ) (55) are separated from each other, each lock claw (58) is disengaged from the engagement groove (23),
The lock will be released. In this state, by engaging the lock pin (56) with the lock release groove (59), the lock mechanism (5) can be held in the lock release state.

If the operating handle (31) of the operating lever (3) is pushed while the operating lever (3) is locked to the transfer plate (2) by the lock mechanism (5) as described above, The driving force from the (41) is transmitted to the transfer plate (2) via the operation lever (3), and the transfer plate (2) is driven in the operation direction. In addition, the operating handle (3) of the operating lever (3)
When 1) is pressed in the opposite direction, the motor (41) rotates in the opposite direction and the transfer plate (2) is driven in the opposite direction. On the other hand, if the operation handle (31) of the operation lever (3) is pressed while the operation lever (3) and the transfer plate (2) are unlocked by the lock mechanism (5), The operating lever (3) is driven in the operating direction by the driving force from the (41), but the transfer plate (2) remains stopped.

As shown in FIGS. 6A and 6B, the transfer belt (20)
Transfer plate (2) or base plate (11) to the upper half
A connection control mechanism to selectively lock either one of
(7) is equipped. The connection control mechanism (7) is a transfer belt.
The belt connecting shaft (71) fixed to (20) is provided, and the tip of the belt connecting shaft (71) further projects outward from the side surface of the transfer plate (2). The belt connecting shaft (71) is shown in FIGS.
As shown in 2, two locations (71a) (71b) in the circumferential direction of the transfer belt
Are arranged in a belt connecting portion. On the other hand, on the side surface of the transfer plate (2), a lock arm (74) having a recess (75) engageable with the belt connecting shaft (71) moved to the upper half of the transfer belt (20), Rotation in a vertical plane is freely pivoted. From the unlocked state shown in FIG.
By rotating the lock arm (74) clockwise to the locked state shown in (4), the recess (75) of the lock arm (74) engages with the belt connecting shaft (71), and the transfer belt (20) The upper half and the transfer plate (2) will be locked to each other. Further, on the base plate (11), there is a lock plate (72) having an engagement hole (73) capable of engaging with the tip of the belt connecting shaft (71) moved to the upper half of the transfer belt (20). However, the rotation in the vertical plane is freely pivoted. By rotating the lock plate (72) counterclockwise from the unlocked state shown in FIG. 6 (b) to the locked state shown in FIG. 6 (a), the engagement hole (73) of the lock plate (72) is released. The upper half of the transfer belt (20) and the base plate (11) are locked to each other by engaging with the tip of the belt connecting shaft (71).

Further, as shown in FIG. 5, the base plate (11)
On the side of the first groove sensor (6), the first lock sensor
(61), second lock sensor (62) and second groove sensor (63)
Are arranged in the front and rear, and the first groove sensor (6) and the second
The groove sensor (63) detects each engagement groove (23).
(See FIGS. 7 (b) (c) and 8 (b) (c)). In contrast, the first
In the lock sensor (61) and the second lock sensor (62), the belt connecting shaft (71) of the connecting control mechanism (7) is mounted on the transfer plate (2).
Alternatively, it detects the state of being locked to either one of the base plates (11). As these sensors, for example, optical sensors can be adopted.

FIGS. 7 to 12 show a series of operations for transferring the patient (9) on the bed (8) to the operating table (81) using the bidirectional transfer device of the present invention. And in this figure 7
8 and 9 show an insertion mode and a transfer mode for transferring the patient (9) lying on the bed (8) onto the apparatus, and FIGS. 9 and 10 show the operation of the patient (9) on the apparatus. Table (81)
The transfer mode and the pull-out mode for transferring to and from are shown. 11 and 12 show the first lock sensor (61) and the second lock sensor (6) in this series of operations.
It shows the detection state of 2).

In the insert mode shown in FIG. 7, the same figure is used.
As shown in (a), the operation lever (3) engages with the engagement groove (23) at the central position on the device and is locked to the transfer plate (2), and the belt connecting shaft (71a) is fixed to the base plate ( From the state locked to 11), move the operating lever (3) to the bed as shown by the arrow.
By pushing to the side (8), the transfer plate (2) is driven from the storage position to the bed (8) side as shown in FIG. 8B, and the tip of the transfer plate (2) is moved to the patient ( 9) Sneak into the back. At this time, since the upper half of the transfer belt is locked and the relative speed with respect to the back of the patient (9) is zero, the transfer plate (2) is naturally inserted into the back of the patient (9). It will be. As a result, the operating lever (3) moves most of its movable distance W, and even if the forward operation is continued as it is, the transfer plate (2) is moved to a sufficient back position to safely support the patient (9). ) Cannot be inserted.

Therefore, the front engaging groove (23) as shown in FIG.
Is detected by the first groove sensor (6), and when this state is notified by a buzzer or the like, the caregiver stops the operation lever (3) and unlocks the operation lever (3),
One operation lever (3) as shown in the figure (c), one rear engaging groove (23)
Pull back to the engagement position with. Then, at this position, the operation lever (3) is locked to the transfer plate (2).

Then, in the movement mode shown in FIG. 8, the operating lever (3) is pushed toward the bed (8) side as shown in FIG. 8A to project the patient (9) safely. Insert the transfer plate (2) to the position. Then, after unlocking the belt connecting shaft (71a) with respect to the base plate (11) and locking the transfer plate (2), the operation lever (3) is pulled back as shown in FIG. , Transfer plate (2) goes back to the original storage position and operating table (81)
Move to the side. At this time, the transfer belt and transfer plate
Since (2) moves as a unit, the patient (9) is transferred to the transfer plate.
(2) There is no risk of falling off from above. As a result, the operating lever (3) moves over most of its movable distance, and even if the pullback operation is continued as it is, the patient (9) on the transfer plate (2) is moved to the operating table (81). I can't do that. Therefore, the operating table of the transfer plate (2) as shown in FIG.
When the engagement groove (23) closest to (81) is detected by the second groove sensor (63) and this state is notified by a buzzer or the like, the caregiver stops the operation lever (3) and operates it. lever
Release the lock of (3) and operate the lever as shown in (c) of the figure.
(3) is moved from the bed (8) side to the engagement position with the second engagement groove (23). And at this position, the operating lever
Lock (3) on the transfer plate (2).

Subsequently, as shown in FIG. 9 (a), the operation lever (3) is pushed toward the operating table (81) to move the patient (9) toward the operating table (81). As a result, the operating lever (3) moves over most of its movable distance, and even if the pressing operation is continued as it is, the patient (9) on the transfer plate (2) is moved to the operating table (8
1) It cannot be moved to the top. Therefore, the same figure (a)
The engaging groove (23) at the center of the transfer plate (2) is
When the groove sensor (63) detects this condition and the buzzer or the like informs this state, the caregiver stops the operation lever (3) and unlocks the operation lever (3), so that the same figure
As shown in (b), the operation lever (3) is moved to the engagement position with the engagement groove (23) closest to the bed (8). Then, at this position, the operation lever (3) is locked to the transfer plate (2).

Thereafter, as shown in FIG. 9 (c), the operation lever (3) is pressed again toward the operating table (81) side to move the patient (9) to the operating table (8).
1) Move it up. In this way, the movement mode is completed.

Next, in the pulling-out mode shown in FIG. 10, after the belt connecting shaft (71a) is unlocked from the transfer plate (2) and the base plate (11) is locked, the same as shown in FIG. ), The operation lever (3) is pulled back onto the apparatus, and the transfer plate (2) is moved toward the original storage position. At this time, since the upper half of the transfer belt does not move, the patient (9) also does not move. As a result, the operating lever (3) moves most of its movable distance, and even if the pullback operation is continued as it is, the patient (9) on the transfer plate (2) should be lowered onto the operating table (81). I can't. Therefore, the transfer plate as shown in FIG.
The second engaging groove (23) from the operating table (81) side of (2) is detected by the second groove sensor (63), and when this state is notified by a buzzer or the like, the caregiver operates (3) is stopped, the operating lever (3) is unlocked, and the operating lever (3) is moved to the operating table (81) side as shown in FIG.

Then, the operating lever (3) is moved to the engaging position with the central engaging groove (23) as shown in FIG. 3C, and the operating lever (3) is placed on the transfer plate (2). After locking, the operation lever (3) is pushed to the bed (8) side, and the withdrawal of the transfer plate (2) is continued. As a result, the patient (9) is lowered onto the operating table (81), and the extraction mode is completed.

In the above series of transfer operations, the first lock sensor (61) and the second lock sensor (62) are the same as those shown in FIG.
Further, as shown in FIG. 12, the locked state of the belt connecting shafts (71a) (71b) is detected. That is, in the insertion mode shown in FIGS. 11 (a) and 11 (b), the belt connecting shaft (71a) is connected to the base plate (11).
The first lock sensor (61) detects the state of being locked to and notifies the detection with a buzzer or the like. After that, FIG.
As shown in (c) and FIG. 12 (a), the transfer plate (2) carrying the patient (9) is moved, or the transfer plate (2) and the operation lever (3) unlocked in the middle of the transfer. ) In the reverse direction, the belt connecting shaft (71b)
The first lock sensor (61) detects the state in which is locked to the transfer plate (2) and notifies the detection by a buzzer or the like. Furthermore, in the pull-out mode shown in (a) to (b) of FIG. 12, the second lock sensor (62) detects that the belt connecting shaft (71b) is locked to the base plate (11),
The detection is notified by a buzzer or the like.

Therefore, the caregiver can know the switching of the transfer mode based on the notification, and can surely switch the operating direction of the operation lever (3).

The configuration of each part of the present invention is not limited to the above-described embodiment, and various modifications can be made within the technical scope described in the claims. For example, various well-known mechanisms can be adopted for power assisting the operation of the operation lever. Further, when the operation lever (3) unlocked from the transfer plate (2) is moved, the motor (41) is rotated at high speed to quickly move the operation lever (3) Operation lever in a free state by disconnecting from the mechanism (4)
A method of moving (3) only by operating force can be adopted.

[Brief description of drawings]

FIG. 1 is a perspective view showing an appearance of a transfer device according to the present invention.

FIG. 2 is a partially cutaway perspective view of a drive mechanism.

FIG. 3 is a partially cutaway perspective view of an operation lever.

FIG. 4 is a partially cutaway perspective view of a lock mechanism.

FIG. 5 is a partially cutaway perspective view showing a groove sensor and a lock sensor arranged on a base plate.

FIG. 6 is a perspective view showing the configuration and operation of a connection control mechanism.

FIG. 7 is a process diagram showing an insertion mode.

FIG. 8 is a process diagram showing the first half of a moving mode.

FIG. 9 is a process diagram showing the latter half of the movement mode.

FIG. 10 is a process diagram showing a pull-out mode.

FIG. 11 is a process diagram showing a detection state of the lock sensor in the process of shifting from the insertion mode to the movement mode.

FIG. 12 is a process diagram showing a detection state of the sensor in the process of shifting from the moving mode to the pulling mode.

[Explanation of symbols]

(1) Truck (11) Base plate (2) Transfer plate (20) Transfer belt (3) Operating lever (4) Drive mechanism (5) Lock mechanism (51) Knob (58) Lock claw (6) First groove sensor (61) First lock sensor (62) Second lock sensor (63) Second groove sensor (7) Connection control mechanism (71) Belt connecting shaft (8) Bed (81) Operating table (9) Patient

─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-8-168505 (JP, A) JP-A-6-335493 (JP, A) JP-A-2-168951 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) A61G 1/00

Claims (3)

(57) [Claims] 1. A dolly (1), a transfer plate (2) supported so as to be able to reciprocate between a storage position on the trolley (1) and two protruding positions on both sides of the storage position. Transfer plate
A reciprocating drive device connected to (2) and a transfer belt (20) wound around the transfer plate (2) along the moving direction.
And an operating lever (3) that is reciprocally movable with respect to the transfer plate (2) and is lockable and unlockable at a plurality of positions, respectively. A bidirectional transfer device having a power assist mechanism for causing the reciprocating drive device to exert a corresponding driving force. 2. A connecting control mechanism (7) for selectively locking the upper half of the transfer belt (20) to either the transfer plate (2) or the carriage (1), The connection control mechanism
(7) is a belt connecting part attached to the transfer belt (20),
It is composed of a first lock mechanism provided on the transfer plate (2) to be engaged with the belt connecting portion, and a second lock mechanism mounted on the carriage (1) to be engaged with the belt connecting portion. The double-sided transfer device according to claim 1. 3. The bidirectional transfer device according to claim 2, further comprising lock detection means for detecting a state in which the belt connecting portion is engaged with the first lock mechanism or the second lock mechanism.