JPH0367905B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a mobile trolley for carrying and transporting a coffin, etc. containing an incapacitated sick person, elderly person, or dead person. The present invention relates to a mobile trolley configured to be extremely easily mounted on a car or a hearse.

(Prior Art) Conventionally, there has been a mobile trolley as disclosed in Japanese Patent Publication No. 56-53377, but the configuration of this conventional mobile trolley has front legs and rear legs at the front and rear of the lower part of the mounting frame, respectively. An operation in which the front and rear legs are provided so that they can rotate back and forth, and rolling wheels are attached to the lower ends of the front and rear legs, and a locking device is operated so that the front and rear legs can rotate rearward in front and behind the mounting frame. A lever was installed.

(Problems to be Solved by the Invention) In conventional mobile carts, people, coffins, etc. are placed on the mounting frame, and then the first one is placed on the car chassis from the front.
When loading the front gear by rotating it backwards as shown in the figure, you must use the operating lever to release the locking device so that the front legs can rotate and fold backwards, which is extremely troublesome. It was hot.

Therefore, in order to improve this, the applicant
On August 27, 2017, we filed an application for an improved mobile trolley. When the front end of the mounting frame was pushed into the chassis of the car, a detection device detected this and the locking device was automatically released so that the front legs could rotate. .

However, the mobile cart that the applicant himself improved also had the problem of the following unexpected situation occurring.

In other words, when a mobile trolley loaded on the chassis of a car is pulled out and lowered to the ground, both the front and rear legs are restored to a standing state by their own weight or by a spring that biases them backwards, and the locking device automatically operates to move the vehicle. However, if the front rolling wheels touch the ground with the front gear leaning backwards while the mounting frame is still supported on the chassis as shown in Figure 2, the front gears will fall backwards. Instead of restoring the vehicle, an unexpected situation occurred as shown in Figure 3, when the front end of the mounting frame separated from the chassis, the front legs folded under its own weight and the vehicle fell forward.

Incidentally, this problem also naturally existed in the conventional mobile carts before the improvement, and the operator could accidentally cause the rolling wheels at the lower end of the nose gear to rotate sufficiently forward and touch the ground in a normal state. If you pull out the carriage from the chassis without checking whether this is the case, you will end up in the unexpected situation shown in Figure 3.

(Technical means for solving the problems) In order to solve the above problems, the present invention takes the following technical means. That is, a front leg 4 whose base side is pivotally supported to be able to rotate back and forth is provided on the lower front side of the mounting frame 3, and a spring 48 is provided to bias the tip end of the front leg 4 forward to rotate. A rear leg 5 is provided on the rear side of the lower part of the frame 3, and the base side thereof is pivotably supported so as to be rotatable back and forth. 4 and the rear legs 5 can be switched between a state in which the rear legs 5 are allowed to rotate rearward from an upright position and fall down, and a state in which the rear legs 5 are not allowed to rotate rearward while remaining in the upright position. Stopping devices 11 and 17 are provided, and a rolling wheel 40 is attached to the tip side of the front leg 4 via a fork 39 that can freely rotate back and forth, and a rolling wheel 40 is attached to the tip side of the rear leg 5 via a caster metal fitting 51. A driving wheel 50 is provided on the lower side of the mounting frame 3 in front of the base position of the front leg 4.
When the mounting frame 3 is appropriately pushed into the chassis 53a of the transport vehicle 53 from the front and mounted, the chassis rolling wheels 24 that support and roll the mounting frame 3 and the mounting frame 3 are positioned on the chassis 53a. A detection device 27 for detecting that the locking device 1 is connected to the locking device 1 is provided.
1 constitutes a rotating mechanism for the front leg 4, which is configured to be interlocked so that the locking device 11 releases the vertical locking state of the front leg 4 when the detection device 27 detects that the front leg 4 is located above the vehicle chassis 53a. A locking rotation fitting 41 that rotates integrally with the fork 39 to which the front rolling wheel 40 is attached and has a locking recess, and a locking rod that is movably attached to the front leg 4 and acts on the locking recess. constitutes a locking state in which the fork 39 is locked and held in a downward direction at the tip end side of the front leg 4, and a locking mechanism R that releases this locked state and freely rotates the fork 39 to the rear side. , a lock is provided between the underframe 3 side to which the base side of the front leg 4 is pivotally attached and the front leg 4, which operates the locking rod by the forward and backward rotation of the front leg 4 to release the locked state by the lock mechanism R; The front leg 4 constitutes the release mechanism F, and the mounting frame 3
In a state in which the front leg 4 is tilted far forward compared to a state perpendicular to the horizontal plane, the lock release mechanism F does not work and the lock mechanism R) is maintained in the locked state, and from this locked state, the front legs 4 rotate rearward and load. The movable cart is configured to release the locked state when the mounting frame 3 approaches a state perpendicular to the horizontal plane.

(Operations and Effects of the Invention) According to the present invention, a coffin or the like containing an incapacitated sick person, an elderly person, or a dead person placed on a stretcher or the like is transported by placing the entire stretcher or the entire coffin on the mounting frame 3. The vehicle is transported to an automobile 53 and placed on the chassis 53a of the automobile 53 in the order shown in FIGS. 8 and 9.

That is, when the movable trolley 3 is pushed onto the chassis 53a from the front end side, the detection rolling wheels 27a detect the chassis 53a and automatically release the locking state of the locking device 11, and the front legs 4 are moved at the rear end of the chassis 53a. It is pushed backwards into the state shown in FIG. 9, and then the operator who is pushing the movable trolley 1 releases the rear locking device 17 so that the rear legs 5 can be rotated backwards. Similar to the front legs 4, the rear legs 5 also fall backwards, and as shown in FIG.
Loaded onto 3a.

After transporting it to the destination, the chassis 53a
Pull out the mobile cart 1 from above and lower it to the ground. At this time, the rolling wheels 50 on the rear leg 5 side are brought into contact with the ground while the rear of the mounting frame 3 is lifted by a person, so that the rear leg 5 does not fall back and touch the ground. If the height of the chassis 53a of the automobile 53 is low or the ground is locally high, the rolling wheels 40 on the front landing gear 4 side may fall back and touch the ground, causing the locking device 11 to fail. The mounting frame 3 remains on the vehicle platform 53a.
There are times when I deviate from this, but at this time,
This front rolling wheel 40 is mounted on the mounting frame 3 on the chassis 53a.
Even if the front leg 4 hangs down due to its own weight and the rolling wheels 40 touch the ground while still falling backwards, the locking mechanism R is activated by the unlocking mechanism F to prevent the rolling wheels 40 from moving upward. Since it becomes free, it automatically moves up even with the ground pressure, and the front leg 4 moves to the rolling wheel 4.
0, it rotates forward unhindered and reaches the state shown in Fig. 10, and then the mounting frame 3 comes off the chassis 53a and remains in the state shown in Fig. 11, and the front gear 4 unexpectedly falls backwards. As it is, the mounting frame 3 is placed on the chassis 53.
This prevents the front legs 4 from falling off as shown in FIG.

Therefore, according to the present invention, when a mobile trolley carrying a coffin containing an incapacitated sick person, an elderly person, or a dead person is pushed and carried to a car and the entire mobile trolley is placed on the chassis of the automobile, the moving trolley is simply placed on the chassis. When you push it into the vehicle, the front gear with the front rolling wheels attached to it will automatically fall backwards, making loading extremely easy. After being locked by the locking device, it touches the ground and is pulled out backwards, and then the front legs rotate forward and the front rolling wheels are pulled out, but at this time, the mounting frame is still on the chassis. If the front rolling wheel touches the ground and the front gear cannot rotate forward, the front rolling wheel will automatically move upwards and no longer prevent the front gear from rotating forward. , the front leg rotates forward from the vertical line of the upper end pivot point of the front leg, and then the mounting frame separates from the vehicle chassis, and the lower end of the front leg touches the ground with the front leg becoming slightly shorter. do. This eliminates the need for the movable dolly to be unloaded from the chassis in an unexpected state where the entire front leg rotates backwards and folds, unlike in the past, and the objects placed on the movable dolly may fall unexpectedly or cause a large shock. You can definitely lower it without having to worry about it.

(Example) An example of the present invention will be described in detail based on the drawings. In Figures 4 and 5, 1 is a moving trolley,
2 is a stretcher that is removably placed on the mobile cart 1.

The mounting frame 3 of the mobile cart 1 has a pair of left and right vertical frames 3.
a, 3b are partially connected by several horizontal frames 3c, and U-shaped lower frames 3d, 3e for attaching legs are integrally attached to the front and rear intermediate parts of the left and right vertical frames 3a, 3b. There is.

4 is the front leg, 5 is the hind leg, and each is shown in the lower frame 3 below.
It is pivotally attached to the front and rear sides of d and 3e via brackets 6 and 7 and pins 8 and 9 for free rotation.
10 is a connecting frame that connects the upper ends of the left and right front legs 4, 4, and the left and right rear legs 5, 5 are similarly connected.

Reference numeral 11 denotes a front locking device, and as shown in FIGS. 6 and 7, a metal fitting 12 is integrated with the front leg 4.
A deep locking recess A and shallow locking recesses B, B, etc. are formed in the arc-shaped portion of the fan-shaped metal fitting 13 fixed to the holder.
is pivotally connected to a bracket 15 connecting the vertical frame 3a and the lower frame 3d of the mounting frame 3 with a pin 16.

Reference numeral 17 denotes a rear locking device, which consists of a locking pawl 18 pivotally connected to the lower frame 3d via a bracket, and a fan-shaped metal fitting 19 having a locking recess integral with the rear leg 5 on its circumferential surface. The locking pawl 18 and the lever 20 are interlocked by a rod 21 so that the locking pawl 18 is operated by a lever 20 attached to the rear part of the mounting frame 3.

22 and 23 are springs, and the locking devices 11 and 17
The locking pawl is provided so as to be biased in the direction of constant engagement with the locking recess.

Reference numeral 24 denotes an undercarriage rolling wheel, which is attached to the left and right vertical frames 3a, 3b of the above-mentioned mounting underframe 3 via brackets 25, 26, and rolls when it comes into contact with the undercarriage when loading the undercarriage frame 3 onto the undercarriage of an automobile. It is set up so that

27 is a detection device that detects the vehicle chassis, and in the example shown,
A detection rolling wheel 27a is pivotally connected to the bracket 26 via an arm 27b and a shaft 28 that is fixed to the arm 27b, and a wheel 30 with a pin 29 is attached eccentrically to the shaft 28, as described above. A rod 32 pivoted to a swinging rod 31 freely swingable on the front side of the vertical frame 3a of the mounting frame 3 is connected to the pin 29 through an elongated hole 33, and swings with the locking pawl 14. The rod 31 is connected to the rod 34, and when the detection rolling wheel 27a is pushed up by the chassis as shown by the imaginary line in FIGS. 4 and 6, the wheel 30 eccentrically rotates and the pin 29
7, the rod 32 is pulled, the swinging rod 31 is made to swing, and the rod 34 is pulled to remove the retaining pawl 14 from the retaining recess 1 of the fan-shaped metal fitting 13, as shown in FIG.

Reference numeral 35 denotes a lever, the base of which is fixed to the swinging rod 31, and is provided so that the swinging rod 31 can be manually swung and the locking device 11 can be engaged or disengaged as desired.

36a, 36b are made of metal, and are attached to the lower ends of the left and right front legs 4, 4.
a and 36b are connected by a U-shaped pipe 37.

Reference numeral 38 is a rotation support shaft, which is connected to the metals 36a and 36b.
The front rolling wheels 40, 40 are attached to both the left and right ends of the front rolling wheels 39 via forks 39, respectively.

Reference numeral R denotes a locking mechanism, which is composed of a locking rotation metal fitting 41, a locking rod 42, etc. To explain this in detail, 41 is a locking rotation metal fitting, which is integrally fixed to the rotation support shaft 38. , locking projections C and D are provided at both ends of the arcuate outer periphery centered on the support shaft 38, and a locking recess H is provided in front of the projection D.

Reference numeral 42 denotes a locking rod, which has a cylindrical body 43 fixed to the front leg 4.
The rod 42 is inserted through the rod 42 and is pushed downward by a spring 44 so that the tip of the rod 42 comes into contact with the arcuate outer periphery of the locking rotation fitting 41, and the lower end of the rod 42 can be inserted into the locking recess ``H''. The rotation support shaft 38 on which the rolling wheel 40 is attached is settable so as not to allow rotation.

Reference numeral F denotes a lock release mechanism, which is composed of a cam body 45, a cam floor 46, etc. To explain this in detail, 45 is a cam body, and both front and rear ends of the iron plate are fixed to the U-shaped lower frame 3d and are pushed downward. It is formed in an arc shape, and the front and rear middle portions of the arc shape are formed into straight portions with the front side facing downward. A cam floor 46 is engaged with the thick plate part of the cam body 45 vertically, and the cam floor 46 and the locking rod 42
are connected. 47 is a guide tool that guides the cam floor 46 so that it can slide only in the vertical direction.

48 is a spring that connects the upper part of the front leg 4 to the pivot pin 8.
A portion of the front leg 4 is extended upwardly, and this extended portion is provided so as to hang backward, and serves to bias the front leg 4 so that it always rotates forward.

Reference numeral 49 denotes a coil spring, one end of which is locked to the metal 36a, and the middle end is wrapped around the support shaft 38 so that the fork 39 of the rolling wheel 40 always rotates forward. The biasing force of the spring 49 is made weaker than the force of the spring 48 to raise the front leg.

A rear rolling wheel 50 is attached to the lower end of the rear leg 5 via a caster metal fitting 51.

In addition, 52 is a leg for the stand. Reference numeral 53 indicates an automobile as a transport vehicle, and 53a indicates a chassis of the automobile.

Next, the operation of the above example will be explained.

First, an incapacitated sick or elderly person is placed on a stretcher 2 and placed on the mounting frame 3 of the mobile cart 1. Then, the movable trolley 1 is pushed from the rear and carried to the transport vehicle 53 (automobile), and the movable trolley 1 is pushed onto the chassis 53a as shown in FIGS. 4, 8, and 9.

At this time, the chassis rolling wheels 24 move forward above the chassis, followed by the detection rolling wheels 27a as the detection device 27, which collide with the chassis 53a and are pushed up to move backward as shown in FIGS. 4 and 6. Rotate upward. The rod 32 is pulled through the wheel 30 and the pin 29, and the locking pawl 1 of the locking device 11 is pulled through the rod 34.
4 around the pin 16 to release the lock from the locking recess A of the fan-shaped metal fitting 13 as shown in FIG. Therefore, the front leg 4 becomes able to rotate rearward, and the front leg 4 hits the rear end of the chassis 53a and the ninth
As shown in the figure, the moving bogie 1 is swung up to the rear side, and at this time, the chassis rolling wheels 24 come into contact with the chassis 53a, and the movable bogie 1
It rolls under the front load of , and is pushed into the chassis 53a without difficulty.

Next, the rear leg 5 side hits the rear end of the chassis 53a, but at this time, rotate the lever 20 upward to release the locking state of the locking device 17, and push it further while supporting it with your hand. Leg 5 also rotates backwards and upwards to form the 12th leg.
As shown in the figure, the trolley 1 is moved easily to the car 53.
is loaded with people on stretcher 2.

Then, the user drives the car 53 and transports it to the destination.

Next, when arriving at the destination and unloading the person on the stretcher 2 and the movable trolley 1 all at once, the movable trolley 1 may be pulled back.

That is, when the rear end side of the mounting frame 3 is grasped and pulled out from above the chassis 53a while being supported by hand, the rear legs 5 are rotated forward by their own weight and rotated forward. Then, the locking device 17 works and the rear leg 5 is locked. In this state, the rear rolling wheels 50 are brought into contact with the ground and pulled out further rearward. Then, the front leg 4 gradually rotates forward due to its own weight and the spring 48, reaching a grounded state. In this case, if the chassis 53a is sufficiently high from the ground and the front rolling wheels 4
When the chassis rolling wheels 24 contact the chassis and are pulled out without touching the ground, they are rotated forward all at once, so the locking device 11 is rotated forward while maintaining the configuration as shown in FIG. is in working condition. When the chassis rolling wheels 24 eventually come off the chassis 53a, the locking device 11 operates as shown in FIG. 6, resulting in a stable state.

However, when the ground is raised high or the height of the chassis 53a of the automobile 53 is low,
The rolling wheels 40 touch the ground first, making it impossible for the front legs 4 to rotate forward as shown in FIG. At this time, the locking rod 42 is pulled upward against the spring 44 by the linear portion of the cam body 45 and is pulled out from the recess of the locking rotation fitting 41, so that the rolling wheel 40 overcomes the coil spring 49 and is rotated forward and upward together with the rotation support shaft 38. Since the tension of the spring 48 is stronger than the coil spring 49, the front leg 4 is sufficiently rotated forward, and in this state, the chassis rolling wheel 24 is removed from the chassis 53a. Therefore, the front leg 4 and the locking device 11 are in the locked state shown in FIG. 6, and the rolling wheel 40 portion at the lower end of the front leg 4 is in the state shown in FIG.
is dropped to the ground. At this time, the U-shaped pipe 37 is grounded, and the movable trolley 1 is maintained in a stable state. That is, the stable state shown in FIG. 11 is reached through the state shown in FIG. 10.

Next, when the operator turns forward and lifts the front side of the mounting frame 3, the rolling wheel 40 is moved by the coil spring 4.
9, the locking rod 42 is rotated forward and locked in the locking recess E of the locking rotation fitting 41, resulting in the state shown in FIG. 6, and the mobile cart 1 can move freely.

Therefore, the ground is mounded, and cars53
Even when the chassis 53a is low, the chassis 53a
It is extremely safe because it can be lowered from above without introducing unexpected situations like the conventional mobile trolley 1.

In the embodiment, a configuration in which the rolling wheels 40 are moved upward in a rotational manner is adopted, but the present invention is not limited to this, and it goes without saying that any other configuration such as a sliding upward movement method may be used.

[Brief explanation of drawings]

Figures 1 to 3 are simplified explanatory diagrams illustrating the problems of conventional mobile trolleys, Figure 4 is an overall side view of the combination of the mobile trolley and stretcher according to the present invention, and Figure 5 is the mobile trolley. FIGS. 6 and 7 are side views showing the operating state of the main parts of the present invention, and FIGS. 8 to 12 are simplified side views illustrating the operation of the present invention. Symbols in the figure: 1 is a moving trolley, 2 is a stretcher, 3 is a mounting frame, 4 is a front leg, 5 is a rear leg, 11 and 17 are locking devices for the front and rear sides, respectively, 24 is a chassis rolling wheel, 2
7 is a detection device, 40 and 50 are front and rear rolling wheels, 53 is a transport vehicle (automobile), and 53a is a chassis.

Claims (1)

[Claims] 1. A front leg 4 whose base side is pivotally supported so as to be rotatable back and forth is provided on the lower front side of the mounting frame 3, and a spring 48 is provided to bias the front end side of the front leg 4 in a forward rotational direction. A rear leg 5 is provided on the rear side of the lower part of the front leg 3, and the base side of the rear leg 5 is pivoted so as to be rotatable back and forth.
The front legs 4 and the rear legs 5 are placed between the base side of the rear legs 5 and the above-mentioned mounting frame 3, and are allowed to rotate rearward from a state in which the front legs 4 and the rear legs 5 are erected and fall down. Locking devices 11 and 17 are provided that can be switched to a state in which the front leg 4 does not rotate rearward and does not allow rearward rotation, and a fork 39 that can freely rotate back and forth is provided on the tip side of the front leg 4.
A rolling wheel 40 is attached to the tip of the rear leg 5 via a caster metal fitting 51.
is provided on the lower side of the mounting frame 3 forward of the base position of the front leg 4, when the mounting frame 3 is appropriately pushed into the chassis 53a of the transport vehicle 53 from the front position and mounted. 3 and a detection device 27 that detects that the mounting frame 3 is positioned on the chassis 53a, and the detection device 27 and the locking device 11 are connected to the detection device 27 and the locking device 11. When the device 27 detects that the device 27 is located on the upper part of the vehicle chassis 53a, the locking device 11 constitutes a rotation mechanism for the front leg 4 which is configured to be interlocked to release the front leg 4 from the upright locked state, and the front rolling wheel 40 is attached. A locking rotation fitting 4 that rotates integrally with the fork 39 and has a locking recess.
1 and a locking rod movably attached to the front leg 4 and acting on the locking recess, the fork 39 is locked and held in a downward direction at the tip side of the front leg 4; and this locked state. Release the fork 3
A locking mechanism R is configured to freely rotate the front leg 9 to the rear side, and on the other hand, between the front leg 4 and the underframe 3 side to which the base side of the front leg 4 is pivoted, the front leg 4 is rotated back and forth. A lock release mechanism F is configured to release the locked state by the lock mechanism R by operating a locking bar, and the lock is released when the front leg 4 is tilted far forward from the state where it is perpendicular to the horizontal plane of the mounting frame 3. The locking mechanism R is maintained in a locked state without the mechanism F working, and the locking state is released when the front leg 4 rotates rearward from this locked state and approaches a state perpendicular to the horizontal plane of the mounting frame 3. A mobile trolley.