JPH01314577A - Self-propelling device for wagon - Google Patents

Abstract

PURPOSE:To obtain a self-propelled device for wagons needing a small installation area, which is separatable from a wagon when not used, connectable easily when needed, and can be set properly at the ground position of a driving wheel by putting a driving mechanism together in a longitudinal direction and providing a lifting mechanism to move a driving wheel up and down and a jointing mechanism with the wagon. CONSTITUTION:A vertical drive-shaft 2 is inserted in a cover cylinder 21 possible to be rotated and to be operated to move up and down by a lifting mechanisms 41-44. A driving wheel 3 is mounted to an axle 22 linked to a gear box G at the lower end of the drive-shaft 2. The lifting mechanisms to move the drive- shaft 2 and the driving wheel 3 up and down with respect to a chassis 1 connect by a toggle joint the links 41, 41 pivoted on the side of the chassis 1 with the links 42, 42 pivoted on the side of the drive-shaft 2, and move them up and down by turning a handle 44 through a screw rod 43. An output shaft of a motor 5 is connected to the drive-shaft 2 through the gear boxes 51a, 51b while jointing mechanisms 61, 62 detachably connect the chassis 1 with the wagon W.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a self-propelled wagon device, and more specifically, the present invention relates to a self-propelled wagon device that is used for transportation work by manual (hand-pushing or hand-pulling) operation in hospitals and the like. This relates to a new device that can be easily connected to a wagon and operated on its own, and is used to administer medicines (including medical materials such as bandages, 11 guns, and scalpels; hereinafter the same applies) and meals at hospitals, etc. It is very useful in reducing the labor involved in operating wagons for transporting such items.

[Prior art and technical issues to be solved] As is well known, in large hospitals that accommodate a large number of inpatients, IV bottles, ampoules, and other medicines are transported all at once to administer to patients in each ward. The amount of medicines is also very large, and the reality is that the wagons loaded with these medicines are usually transported to each patient's hospital room by a woman (nurse) pushing and pulling them by hand.

However, although hospital corridors and communication routes between wards are constructed to be level-free so as not to impede the quick and smooth movement of stretchers carrying rescue patients, they are not necessarily level. It is not always level, and there are quite a few places where there are quite long slopes, albeit gentle. Therefore, it cannot be denied that the transport work carried out in wagons, which was a part of women's daily work, was hard work even for energetic young nurses, and was a cause of overwork. Furthermore, since the same situation applies to the transportation of meals, there was a need for improvement as it was a labor management problem that affected all hospital workers.

Therefore, in order to meet such demands, the inventor of the present invention has conducted various prototype experiments in order to commercialize a self-propelled wagon by incorporating a drive mechanism such as a motor into the wagon itself that performs the above-mentioned work. I tried this, but - if I were to equip a single wagon with self-propulsion capability, the manufacturing cost of the wagon would dramatically increase, and I would not be able to get the same amount of product as before. If you try to secure enough volume, the weight and body size of the wagon itself will increase, which is not welcomed at all in hospitals where space saving is required for reasons such as smooth and safe passage and easy storage. As a result, we decided to abandon commercialization of the product.

The present invention was developed based on the experience gained from the failed prototype test of self-propelled wagons, and was developed to meet the demands of hospitals and other facilities to reduce the labor involved in administering medicines and transporting meals. At times, it can be separated from the wagon and kept on standby, and when it becomes necessary to use the wagon to transport medicines, meals, etc., it can be easily connected to the wagon and operated in a self-propelled manner. The technical challenge is to provide a practical self-propelled device that can.

Another technical object of the present invention is to provide a small, space-saving self-propelled wagon device in which the drive mechanism is compactly integrated in the vertical direction and the installation area is significant.

Furthermore, another technical object of the present invention is to provide a versatile self-propelling device that can add self-propelling functionality to any existing wagon as long as the wagon is equipped with a simple acknowledgment. be.

[Means Adopted to Solve the Problems] The means adopted by the present inventor to solve the technical problems mentioned in t above will be explained with reference to the accompanying drawings as follows.

That is, the present invention has the following features: A. A transmission means called a drive shaft 2 which is vertically installed on a long shaft l so that it can be raised and lowered; A driving wheel means called a drive wheel 3 that is raised and lowered according to the rising or falling movement of the chassis;
Lift mechanism (41) that relatively raises or lowers the
42, 43, 44), a driving wheel elevating means τ; D, a prime mover means, a motor 5, which is connected to the drive shaft 2 and applies rotational driving force to the shaft; The joint mechanism (61
The above-mentioned technical problem was solved by adopting the technical means listed in A-E above and skillfully linking and integrating them to create a self-propelled wagon car device. .

〔Example〕

Hereinafter, based on the embodiments of the present invention shown in FIGS. 1 to 8,
It will be explained in more detail.

In Figs. 1 to 8, the reference numeral l indicates the noyashi of the self-propelled device jT of this embodiment, which is made vertically long so that the mechanical members necessary to drive the device can be incorporated compactly in the vertical direction. be. Note that the reference numeral 11 in the figure is a handle provided on the upper part of the chassis l,
Reference numeral 12 is an auxiliary wheel disposed at the rear lower part of the chassis l, which can be left standing on its own during standby or used when towing.

Reference numeral 2 designates a vertical drive shaft which is vertically installed in the upper part F so that it can be raised and lowered, and which is rotatably inserted into the cover cylinder 21.

The drive shaft 2 can be moved up and down together with the cover tube 21 by a lift mechanism described later.

The one designated by numeral 3 is the drive wheel.

In this embodiment, the drive wheel 2 is an axle 22 connected to a gearbox G at the lower end of the drive shaft 2.
It is attached to the shaft 2 and can move up and down together with the shaft 2, and rotates when the drive shaft 2 is driven to rotate.

Reference numerals (41, 42, 43, 44) indicate a lift mechanism that raises and lowers the drive shaft 2 and drive wheels 3 relative to the chassis l, and links 41, 41 pivotally supported on the chassis 1 and the drive The links 42, 42 pivotally supported on the shaft 2 side are toggle connected, and a screw loft 43 is interposed in this toggle joint, and the distance between the toggle joints can be adjusted by rotating the operating handle 44 to separate and separate the parts. By approaching the drive shaft 2, cover cylinder 21, gear box G, axle 2
2 and drive wheels 3 are raised and lowered together. In this embodiment, the screw rod 43 is arranged on the back side, avoiding the drive shaft 2 and the cover cylinder 21, as shown in FIG. 3, and this part is shown enlarged when viewed from the back side. These are shown in FIGS. 6 and 7.

The reference numeral 5 designates a motor, the output shaft of which is connected to the drive shaft 2 via gearboxes 51a and 51b, and is designed to rotate the drive wheels 3 at a speed of approximately 1:3 per hour. It is. The reference numeral 52 in FIGS. 3 and 5 indicates an electromagnetic brake, which stops the drive wheels 3 and brakes the self-propelled device T and the wagon.

The reference numerals (61, 62) and I indicate a joint mechanism, which connects the chassis 1 of the device T of this embodiment and a wagon to be described later in a detachable manner.

In this embodiment, as shown in FIG.
There are 4 clamps 61 at the top and bottom on both left and right sides of the rear part of the palm.
At the same time, a connecting plate P having four outward hooks 62 corresponding to these clamps 61 is attached to the front surface of the wagon as an acnotiment, and each of the clamps 61 is hooked to the outward hooks of the connecting plate P. The structure is the same.

In this embodiment, as shown in FIG. 8, bosses 63 are provided protruding from the rear surface of the chassis l, and penetration holes 64 and 64 into which the bosses 63 are fitted are provided in the connecting plate P.
64 is recessed and is configured so that when the wagon is connected to the self-propelled device T and travels, the wagon moves up and down integrally with the self-propelled device T, so that the self-propelled device The driving force of T acts effectively.

The vehicle indicated by the symbol W is a wagon manufactured for the delivery of medicines, and like conventional wagons, it has large and small extractor and storage parts 71a and 71b for sorting and storing drip bottles, ampoules, and other medicines.・71c..., etc., and it can be moved freely by moving forward, backward, pushing and pulling to the right or left using a hand-pushed or hand-towed system like before (1st
(see figure).

Next, what is denoted by the symbol C in FIG. 1 is an operation port attached to the handrail 72 at the rear of the wagon W, and is connected to a control box 8 built into the self-propelled device T via wiring (not shown). The electric system of the self-propelled device T is controlled by button operation, and the motor 5 and the electromagnetic brake 52 are driven to control the operation of the wagon W. In addition, the symbol V in the figure is panteri,
Further, V is an outlet for charging the battery.

(How to use the device of this embodiment) To operate the wagon W using the device T of this embodiment, the following procedure may be performed.

That is, the outward hook 6 of the connecting plate P on the front of the wagon ton W
At the same time, the bosses 63, 63 are inserted into the penetration holes 64, 64, and then the operating handle 44 is turned to lower the lift mechanism to lower the drive wheel. 3 in the direction of contact with the ground.

Then, when the front wheels of the wagon W are set in a state where the front wheels of the wagon W are lifted up, and a button is pressed on the operation board C, the motor 5 is driven, and the self-propelled device T tows the wagon W and runs. start. In this case, the route of the towed wagon W can be freely changed by pushing the wagon W to the left when you want to turn to the right, and to the right when you want to turn to the left, as with conventional hand-pushed wagons. Needless to say, it is possible to perform steering operations.

[Example of design change]

Although the configuration of the embodiment of the present invention is generally as described above, the present invention is by no means limited to the above-mentioned embodiment.
“Various design changes are possible within the scope of claim j, and for example, regarding the lift mechanism that raises and lowers the drive shaft 2 and the drive wheels 3 relative to the chassis l, (1) No. 9 to A system is adopted in which a compression coil bar 245 as shown in FIG. 10 and a fluid pressure cylinder 46a that raises and lowers the drive shaft 2 and drive wheels 3 by varying the compression amount of this compression cylinder 45a, (2) FIG. As shown in FIG.
(3) As shown in FIG. 12, the first worm 45c is attached to the drive shaft 2, and the first worm 45c is rotated by a second ohm 46c to move it up and down, or (4) as shown in FIG. 13, a tapered member 46d is provided on the bottom plate of the chassis l to be moved forward and backward by the operation of the handle 45d. This taber member 46d
Needless to say, a design change such as adopting a method of raising and lowering the drive shaft 2 and the drive wheels 3 depending on the contact positional relationship with the drive shaft 2 and the drive wheel 3 belongs to the technical scope of the present invention.

Regarding the joint mechanism for connecting the device T of this embodiment to the wagon W, (1) As shown in FIG. The connection plate P of the W is provided with bag hooks 62, 62, etc., which are opened at the bottom corresponding to the above-mentioned upward hooks, and the drive wheels 3 are lowered with the rear surface of the chassis L and the wagon W in contact with each other. (2) As shown in Fig. 15, the rear side of the chassis l At the same time, the connecting plate P of the wagon W is provided with side-opening bag hooks 62, 62 corresponding to the spring hooks, so that the rear surface of the chassis L and the wagon W are connected. The spring hooks 61, 61... and the bag hooks 62, 62... with the metal plates aligned and leveled.
(3) As shown in Figure 16, it is configured as a drop-in latch type, (4) As shown in Figures 17-18, it is configured as a rotating hook type. (51 As shown in Figs. 19 to 21, a walking rail 62 is pivotally supported at the lower front of the wagon W, and this walking rail 6
When the auxiliary wheel 12 is fitted into the pawl at the rear end of the auxiliary wheel 12, the walking rail 62 rotates and floats due to its weight, making the auxiliary wheel 12 longer together with the hook plate 61. It must be said that such matters naturally fall within the technical scope of the present invention.

[Effects of the present invention] As described below with reference to the embodiments and their modifications,
The self-propelled device manufactured using the present invention can be separated from the wagon and kept on standby when not in use, and can be easily connected to the wagon when transport is required, keeping the driving wheels grounded. By setting the appropriate settings, the person in charge of transportation can move the wagon easily, and at that time, the i! ! ! You only need to pay attention to
This makes the work much easier and lighter than before.

In addition, in the device of the invention, the drive mechanism is compactly integrated in the vertical direction on the chassis, so the ground contact area is small, so it is extremely space-saving, and does not get in the way during storage or when driving.

Furthermore, the device of the present invention can be connected to an existing wagon by using a simple attachment, which is very convenient as it can provide a self-propelled function to the vehicle.

As described above, according to the present invention, the work of transporting medicines and meals in hospitals, etc., which was conventionally considered hard labor, can be extremely streamlined, and since the self-propelled device can be attached and detached very easily, it is possible to use the self-propelled device when it returns home. Since it is possible to reconnect to a wagon waiting to be loaded and make a turnaround, the wagon can be operated economically with a minimum number of vehicles.

[Brief explanation of the drawing]

Figures 1 to 8 show embodiments of the present invention. Figure 1 is a rear perspective view of the device of this embodiment connected to a wagon, and Figure 2 is a rear perspective view of the device of this embodiment connected to a wagon. 3 is a partial side view of the device of this embodiment with the side plate removed; FIG. 4 is a front view of the device of this embodiment;
FIG. 5 is a front view of the device shown in FIG. 4 with the front plate removed; FIGS. 6 and 7 are enlarged explanatory views showing the front and rear aspects of the lifting mechanism in the device of this embodiment; FIG. 8 is a perspective explanatory view showing the joint mechanism in the device of this embodiment,
9 to 13 are explanatory views showing modified examples of the lift mechanism in the present invention, and FIGS. 14 to 21 are explanatory views showing modified examples of the joint mechanism in the present invention. 1.--Chassis, 2.-Driven Yaft, 3.--
Drive wheel, (41・42・43・44)---Lift mechanism, 5・-
Motor, (61, 62)--Stained mechanism. P--Connection plate, T--Self-propelled device, W--Wagon vehicle. Patent Applicant Sakase Chemical Industry 4G Agent Patent Attorney Koji Togawa Figure 2 Figure 3 National Affairs. figure
Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] A drive shaft 2 is vertically installed on a longitudinally elongated chassis 1 so that it can be raised and lowered; and a drive wheel that is mounted on the lower end of the shaft 2 via an axle 22 so that it can be raised and lowered, and that is raised and lowered in response to the upward or downward movement of the shaft 2. 3; connected to both the chassis 1 and the drive shaft 2;
a lift mechanism (41, 42, 43, 44) that raises or lowers the drive shaft 2 relatively; a motor 5 that is connected to the drive shaft 2 and applies rotational driving force to the shaft; A self-propelled wagon vehicle device comprising a joint mechanism (61, 62) for removably connecting a chassis 1 to the front or rear portion of a wagon W.