JPS596820Y2 - Locking device for endless band for patient transfer in patient transfer machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a locking device for an endless band for transferring patients in a patient transfer machine.

Conventionally, a frame that can be raised and lowered in the vertical direction is provided for a cart, and a slide plate that can reciprocate in the horizontal direction is provided with respect to the frame, and an endless band is wrapped around the slide plate in the reciprocating direction. In a patient transfer device in which a locking rod is fixed to a part of a band perpendicular to the upper side of a slide plate, the endless band is moved around the slide plate as the slide plate reciprocates in order to transfer patients. There is no device that smoothly and reliably locks the locking rod in order to displace the locking rod.

The present invention improves the locking device for the locking rod for patient transfer in the conventional patient transfer machine, and provides a locking device that operates smoothly and reliably, has a simple structure, and has a smart appearance. With the goal.

Hereinafter, the present invention will be sequentially explained according to an illustrative embodiment.

Reference numeral A denotes a patient transfer machine, which includes a movable bed 1 that is raised and lowered by hydraulic pressure and reciprocates in the horizontal direction, a cart 3 that supports the movable bed 1 and is driven by an electric motor 2, and each of the above-mentioned hydraulic drives. It is constructed so that it can be operated remotely using a hand switch 4.

The movable bed 1 consists of a frame 5, a slide plate 6, an endless band 7, etc., and has a rectangular shape large enough to hold a patient lying down.

The frame 5 is mounted on the truck 3 via a vertical hydraulic cylinder 8 and a vertical guide device 9 so as to be movable up and down, and
It is designed to substantially surround and support a slide plate 6 that can be reciprocated in the horizontal direction, and a buffer body 10 is attached to its outer periphery.

In order to make the slide plate 6 lightweight and support the patient with less deflection, two thin plates 6a and 6b, upper and lower, each having an area approximately equal to the inner cavity of the frame 5, are arranged at regular intervals in the direction of movement. It is connected by a plurality of ribs 6C.

An endless band 7 is wrapped around each of these thin plates 6 a and 6 b.

The slide plate 6 is a hydraulic cylinder 11 in a horizontal direction.
, endless chains 12, 16, brackets 13, 15, etc., are mounted so as to be able to reciprocate outwardly on the frame 5.

The hydraulic cylinder 11 is mounted horizontally and laterally on substantially the center of the frame 5.

A piston rod 1 reciprocated by the cylinder 11
4 is fixed to the bracket 15, and the bracket 1
Both sides of the cylinder 11 are close to both sides of the cylinder 11, and are fixed to endless chains 16, 16 stretched in parallel.

Sprocket 17.1 of the endless chain 16, 16
The shaft 18.18 of 7 extends so as to double as the shaft of the endless chain 12.12M sprocket 19.19, which is stretched parallel to the front and rear ends of the slide plate 6. Endless chain 16.16 and 12.
12 are linked together.

The diameter of the sprocket 19.19 is the same as that of the above sprocket} 1
7.17 to increase the stroke of the piston rod 14 in the endless chain 12.12.

A bracket 13 is fixed to the endless chain 12.12, and is configured to reciprocate along a guide rod 20 that is spanned parallel to the chain 12.12.

The guide rod 20 passes through the bracket 13 and connects to the frame 5.
It is being carried over to.

A slide plate 6 is fixed to the upper surface of the bracket 13 so as to reciprocate in synchronization with the reciprocating movement of the endless chain 12.12.

The electric motors 2, 2 are drive wheels 2 that are pivotally supported on both sides of the front of the truck 3.
1.21 are directly connected so that their axes are aligned.

There are casters 22 on both rear sides of the trolley 3. 22 is pivotally supported and can freely rotate forward, backward, left and right, and these rotations can be locked by a lever 23.

24 is a battery mounted on the truck 3; 25 is a charging transformer; 26 is a battery that gradually starts the truck 3;
27 is a drive switch that operates the trolley 3 forward, backward, and neutral; 28 is a base switch that moves the frame 5 up and down; and 29 is a switch that moves the slide plate 6 back and forth. 30 is a speed adjustment dial, 31 is a starter switch, and 32 is a charge detection meter.

The hand switch 4 includes a base switch 33 that raises and lowers the frame 5 and a slide switch 34 that reciprocates the slide plate 6. The hand switch 4 is equipped with a base switch 33 that moves the frame 5 up and down, and a slide switch 34 that moves the slide plate 6 back and forth. It is designed to operate.

Reference numeral 36 denotes an electromagnetic valve, which is energized when the base switch 33 or slide switch 34 is activated.

The endless band 7 has a width divided by the ribs 6C and is made up of a plurality of endless bands 7a, 7a, . A plurality of endless bands 7b, 7b...
・Consists of.

The upper endless bands 7a, 7a... are all fixed to a locking rod 37 that crosses the bands located above them, and the lower endless bands 7b, 7b... They are all fixed to the intersecting side open edges 5a of the frame 5.

The locking rod 37 lies on the upper thin plate 6a in a fixed state of the endless bands 7a, 7a, and reciprocates in synchronization with the upper thin plate 6a, and has sliding portions at both ends thereof. 38
．． 38 can slide on the frame 5 and can be engaged with a protrusion 39 attached to the frame 5 so that the height of the protrusion onto the frame 5 can be varied.

That is, the sliding part 38 has a first locking recess 38a that locks the protrusion 39 in its normal position (low protrusion height position), and a second locking recess 38a that fits and locks the protrusion 39 in its raised state, which will be described later. A locking recess 38b is provided.

The first locking recess 38a is formed in the front end face of the sliding part 38 in the form of a tunnel and is opened with a certain depth, and when the sliding part 38 moves forward, it straddles the protrusion 39 in the normal position within the recess 38a. 39a of the protrusion 39 and a blind surface 38a' of the recess 38a.

The second locking recess 38b is inserted above the recess 38a from the blind surface 38a' to the open side with a diameter d that is approximately the same length as the diameter of the projection 39, and inserts the upper end portion of the projection 39 in a raised state. When the sliding portion 38 moves backward, the other side 39b of the protrusion 39 abuts and locks against the wall surface 38b' on the opposite side from the blind surface 38a'. ing.

The protrusion 39. Reference numeral 39 is set at the open end of the frame 5 at the normal protrusion position via first rotation links 40, 40 and springs 41 and 41, and a lever 42, a reciprocating link 43, and a second rotation link. It is raised via the links 44, 44 and the third pivot link 45, 45, and is set to the fitted and locked position.

46.46 is a fixed piece that pivotally supports the first rotation link 40.40.

Reference numeral 47 denotes a handle horizontally suspended behind the frame 5, and a tape switch 48 is provided inside the handle.

49 is a key. Note that 50 is a patient and 51 is a bed.

Next, the main functions of the above-mentioned patient transfer device A will be explained separately into the operations of scooping up and discharging the patient.

■ Operation of scooping up the patient First, as shown in FIG. 5, the patient transfer machine A is fixed close to the side of the bed 51, and the endless band 7 is adjusted to a height that allows it to scoop up the patient 50. do.

Subsequently, when the slide switch 29 or 34 is pressed to advance the slide plate 6 and the endless band 7, the blind surface 38a' of the first locking recess 38a of the sliding portion 38 is moved as shown by the solid line in FIG. One side 39 a of the protrusion 39 protruding to the normal position as shown in FIG.
The sliding portion 38, and therefore the locking rod 37 integral therewith, stops.

At this time, only the slide plate 6 moves forward, and the endless band 7a wrapped around the slide plate 6 is forcibly rotated counterclockwise around the slide plate 6, causing a positional displacement, and the patient
0 onto the endless band 7a.

■ Patient release operation First, the patient 50 is advanced onto the bed to be released together with the endless band 7a, and then the lever 42 is rotated upward and the predetermined mechanisms (40, 41, 43, 44, 45) are activated. The protrusion 39 is raised through the .

Subsequently, when the slide switch 29 or 34 is pressed to move the slide plate 6 backward, as shown in FIG.
8b' and the sliding portion 38 and locking rod 37 stop.

At this time, only the slide plate 6 moves backward, and the endless band 7a wrapped around the slide plate 6 is forcibly rotated clockwise around the slide plate 6, causing a positional displacement.
Release and place on the bed.

As described above, according to the locking device of the present invention, there is no sliding action in the process of engaging the first and second locking recesses of the sliding portion and the protrusion, so that the patient There are advantages such as smooth and reliable transfer operations, a compact structure of the patient transfer machine, and a good appearance.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a patient transfer machine that is an embodiment of the present invention;
Figure 2 is a plan view of the same transfer machine with the slide plate removed, Figure 3 is a side view of the same transfer machine, Figure 4 is a plan view of the same transfer machine, and Figure 5 is a front view of the same transfer machine. FIG. 6 is an enlarged front view of the drive section of the above transfer machine, and FIG. 7 is an explanatory view of the action of the locking device of the endless belt for patient transfer of the above transfer machine. A...Patient transfer machine, 1...Movable bed,
2...Electric motor, 3...Dolly, 4...
...Hand switch, 5...Frame, 6.
...Slide plate, 6a... Upper thin plate, 7
, 7a... Endless band, 37... Locking rod,
38... Sliding part, 38 a... First locking recess, 38 b... Second locking recess, 39...
····protrusion.

Claims (1)

[Scope of utility model registration request] A frame that can be raised and lowered in the vertical direction is provided for the trolley, a slide plate that can reciprocate in the horizontal direction is provided with respect to the frame, and an endless band is wrapped around the slide plate in the reciprocating direction,
In a patient transfer device in which a locking rod is fixed to a part of the endless band at right angles to a band located above a sliding plate, a sliding portion provided at both ends of the locking rod that moves on the frame. a first locking recess that abuts and locks one side of the protrusion when the protrusion is in a low position, and the other side of the protrusion is in a high position; 1. A locking device for an endless belt for patient transfer in a patient transfer machine, characterized in that a second locking recess is continuously formed to abut and lock.