JP7080656B2 - Serving car - Google Patents

Description

The present invention relates to a serving car.

As a conventional serving vehicle, for example, those described in Patent Document 1 and Patent Document 2 are known.

The serving car described in Patent Document 1 is a four-wheel serving car, and includes a main body having a heat insulating structure in the shape of a rectangular box. A pair of left and right free wheels that can be freely changed are arranged on the rear side of the bottom surface of the main body so as to be rotatable, and a pair of left and right drive wheels are arranged on the front side of the bottom surface of the main body. It is rotatably arranged. Further, a pedal lock for braking the movement of the serving car is arranged between the free wheels.

The serving car described in Patent Document 2 is a six-wheeled serving car, and includes a storage chamber main body made of a rectangular heat insulating box body. On the bottom of the main body, a pair of left and right free wheels are provided at both front and rear ends, and a pair of left and right fixed rings are provided at an intermediate position between the front and rear free wheels. Further, a pedal lock is provided between the free wheels on the rear side to brake the movement of the serving car.

Japanese Unexamined Patent Publication No. 2009-274501 JP-A-2015-199395

When the serving wheel (four wheels) described in Patent Document 1 turns, the fixed wheel on the front side becomes the center of the turn, so that the turning radius becomes large and it is difficult to make a small turn when passing through a narrow passage. be. On the other hand, when the serving wheel (six wheels) described in Patent Document 2 turns, the turning radius becomes smaller than that of the serving wheel described in Patent Document 1 because the central fixed wheel is the center of turning.

However, when the serving car is braked by the pedal lock, since the pedal lock is generally provided with play, the rear side of the serving car swings in the left-right direction around the fixed wheel. At this time, in the case of the serving wheel (four wheels) described in Patent Document 1, since the fixed wheel on the front side of the serving wheel serves as the rotation axis, the swing width on the front side is suppressed with respect to the swing width on the rear side. On the other hand, in the serving car (6 wheels) described in Patent Document 2, since the central fixed wheel serves as the axis of rotation, when the rear side of the vehicle body swings in the left-right direction, the serving vehicle on the front side of the vehicle body also uses the central fixed wheel as a fulcrum. There is a problem that the swing width is the same as the swing width on the rear side, and the swing is large in the left-right direction. In addition, when a foldable side table is provided in front of the storage chamber, the distance from the side table to the fixed wheel is longer than the distance from the fixed wheel to the free wheel on the rear side. However, there was a problem that the shaking width became even larger and the soup meal placed on the side table was easily spilled.

The present invention has been made in view of the above circumstances, and one of the objects of the present invention is to provide a catering vehicle capable of suppressing the shaking of the front side of the vehicle body at the time of pedal lock while reducing the turning radius.

In order to solve the above problems, the serving car of the present invention is a serving car having a storage chamber, and is arranged on the chassis on which the storage chamber is loaded and the front side where the direction of the wheels can be changed. The free wheel, the rear free wheel arranged on the rear side of the chassis and capable of changing the direction of the wheel, and the free wheel arranged between the front free wheel and the rear free wheel of the chassis, and the direction of the wheel is A fixed fixed ring is provided, and the fixed ring is arranged at a position closer to the front free wheel than the rear free wheel.

When the serving car turns, it turns with the fixed wheel as a fulcrum, and the fixed wheel is arranged between the front free wheel and the rear free wheel. As a result, the fixed wheel is located at the rear compared to the configuration in which the fixed wheel is arranged on the front side and the free wheel is arranged on the rear side as in the conventional four-wheel specification serving car, so that the turning radius of the serving car is set. Can be made smaller.
In addition, when the catering vehicle is moved to the wall, it is generally easier to operate the fixed wheel, which is the fulcrum of turning, when the position of the fixed wheel is in the front, but the fixed wheel is located closer to the front free wheel. It is arranged in. As a result, the fixed wheel is located in the front as compared with the configuration in which the fixed wheel is arranged in the center between the front free wheel and the rear free wheel as in the conventional 6-wheel specification serving car. , Width adjustment and other operations are easier to perform.

Further, the rear side free wheels may be provided in pairs on the left and right, the fixed wheels may be provided in pairs on the left and right, and the front side free wheels may be arranged in the center in the left-right direction.

By adopting a five-wheel configuration in which the number of front flexible wheels is one, the ground contact area of the front flexible wheels is reduced and the serving is served, as compared with the configuration in which there are a pair of left and right front flexible wheels as in the conventional six-wheel configuration. It is possible to reduce the load applied when starting the car. Further, since the number of front free wheels is one, the number of parts can be reduced.

Further, a braking mechanism for braking the vehicle body by coming into contact with the ground contact surface of the serving car may be provided, and the braking mechanism may be arranged between the pair of rear free wheels.

When the vehicle body is braked by a braking mechanism (for example, a pedal lock) arranged between a pair of rear free wheels, the pedal lock is generally provided with a play, so that the rear side of the serving car is It will swing in the left-right direction. At this time, the rear side of the serving car sways in the left-right direction with the pair of fixed wheels as fulcrums, but since the pair of fixed wheels are arranged at a position close to the front free wheel, the front side of the vehicle body sways. The width is smaller than the swing width on the rear side of the vehicle body. Thereby, for example, it is possible to prevent the meal of the soup arranged on the front side of the upper surface of the storage chamber from spilling due to shaking.

Further, the front universal wheel is detachably attached to the chassis, and the pair of the fixed wheels are detachably attached to the pair of first attachment portions provided on the chassis. When the front free wheel is removed and the pair of fixed wheels are removed from the first mounting portion, the chassis is provided with a pair of second mounting portions to which the removed pair of fixed wheels can be mounted. The pair of second mounting portions may be provided and may be arranged in front of the pair of first mounting portions.

Generally, when the position of the fixed wheel serving as the fulcrum of turning is on the front side, it is easier to perform operations such as adjusting the width of the catering vehicle. Therefore, by configuring as described above, for example, by removing the front free wheel and replacing the pair of fixed wheels from the first mounting portion to another second mounting portion, the fixed wheel can be changed from the five-wheel configuration. It is possible to change the position of to a four-wheeled serving car that is further forward. This makes it possible to change to a four-wheel configuration as appropriate when operations such as width adjustment are required.

Further, the front free wheel may be configured to be located above the fixed wheel and the rear free wheel.

Since the front free wheel is located above the fixed wheel and the rear free wheel, the ground pressure of the front free wheel is the fixed wheel and the rear free wheel when the serving wheel is placed on a flat surface. It will be lower than the ground pressure of. As a result, the load applied when the serving vehicle is started is reduced, and the load applied when the serving vehicle is turned back is also reduced. Further, when the serving car approaches the ascending inclined surface S, the fixed wheel easily touches the ascending inclined surface S, so that only the front side free wheel and the rear side free wheel touch the ground, and the serving car can freely move forward, backward, left and right. It suppresses the movement.

According to the present invention, it is possible to provide a catering vehicle that suppresses shaking on the front side of the vehicle body when the pedal lock is locked while reducing the turning radius.

Front perspective view of the serving car Perspective view from the bottom side of the serving car Rear perspective view of the serving car Side view of the serving car when installed on a flat surface Side view of the serving car on the slope Bottom view of the serving car Rear view of the serving car Enlarged view of the vicinity of the front free wheel in FIG. Rear view of the serving car when the pedal lock is locked Exploded view of the wheel in FIG. Perspective view from the bottom side of the serving car when four wheels are set Exploded view of the wheel in FIG.

The serving car 10 of the present embodiment will be described with reference to FIGS. 1 to 12. In the following description, the X direction in FIG. 1 is forward, the Z direction is upward, and the Y direction is right.
As shown in FIG. 1, the serving car 10 includes a storage chamber 12 of a heat-insulating box body capable of accommodating meals, and a chassis 26 on which the storage chamber 12 is loaded.

As shown in FIG. 1, the storage chamber 12 is composed of a refrigerating chamber 14 arranged on the front side for cooling meals and a heating chamber 16 arranged on the rear side for heating meals. Further, below the refrigerating chamber 14, a machine room 18 is provided in which refrigerating equipment for cooling the inside of the refrigerating chamber 14 is housed.

As shown in FIG. 1, a plate-shaped top plate 20 is provided on the upper surface of the storage chamber 12, and a handle 22 is provided on the rear end side of the top plate 20. While holding the handle 22 by hand, the user pushes or pulls the handle 22 to drive the serving wheel 10. A foldable side table 24 is provided on the front surface of the refrigerator compartment 14.

As shown in FIG. 2, the chassis 26 has a rectangular plate shape, and on the lower surface of the chassis 26, a universal wheel 30 whose wheel direction can be changed, a fixed wheel 36 whose wheel direction is fixed, and a fixed wheel 36, , A pedal lock (braking mechanism) 38 of a treading type capable of braking the serving wheel 10 is provided. The serving wheel 10 has a five-wheel configuration including three free wheels 30 and two fixed wheels 36.

As shown in FIG. 2, the free wheels 30 are arranged on the front side of the lower surface of the chassis 26, and the front free wheels 32 located in the center in the left-right direction and a pair of left and right wheels arranged on the rear side of the lower surface of the chassis 26. It is composed of a rear universal wheel 34. A pair of left and right fixed wheels 36 are provided between the front free wheel 32 and the rear free wheel 34. As shown in FIG. 6, the pair of fixed wheels 36 are arranged closer to the front free wheel 32 than the pair of rear free wheels 34, and are located between the front free wheel 32 and the rear free wheel 34. Assuming that the length in the front-rear direction is L1 and the length in the front-rear direction between the fixed wheel 36 and the rear free wheel 34 is L2, L2 is about 3/4 of the length of L1. In this way, by arranging the pair of fixed wheels 36 at a position closer to the front free wheel 32 than the rear free wheel 34, the pair of fixed wheels 36 are fixed to the center between the front free wheel and the rear free wheel as in the conventional case. Compared to a 6-wheel specification serving car with wheels, it is easier to perform operations such as width adjustment. Further, since the number of front free wheels 32 is only one, the number of parts can be reduced as compared with the conventional 6-wheel specification serving car.

As shown in FIG. 4, the front free wheel 32 is located slightly above the pair of fixed wheels 36 and the pair of rear free wheels 34. As a result, when the serving wheel 10 is placed on the plane F, the ground contact pressure of the front free wheel 32 becomes lower than the ground pressure of the pair of fixed wheels 36 and the pair of rear free wheels 34, and the serving wheel 10 is served. The load applied when the vehicle 10 is started and the load when the serving vehicle 10 is turned are reduced. Further, as shown in FIG. 5, when the serving wheel 10 approaches the ascending inclined surface S, the fixed wheel 36 easily comes into contact with the inclined surface S, so that the fixed wheel 36 does not come into contact with the front free wheel 32 and the front free wheel 32. Only the rear universal wheel 34 touches the ground, and the serving wheel 10 is suppressed from moving back and forth and left and right.

As shown in FIG. 10, the free wheel 30 and the fixed wheel 36 are detachably attached to a mounting portion 50 composed of four screw holes provided on the lower surface of the chassis 26. The mounting portion 50 can be mounted with a pair of first mounting portions 52 to which a pair of fixed wheels 36 can be mounted, a third mounting portion 56 to which a front free wheel 32 can be mounted, and a pair of rear free wheels 34. It is composed of a pair of fourth mounting portions 58 and a pair of second mounting portions 54 arranged in front of the pair of first mounting portions 52 and used when changing to a four-wheel configuration described later. ing.

As shown in FIGS. 2 and 7, the pedal lock 38 is arranged between the pair of rear free wheels 34, and has a mounting plate 40 that can be mounted on the lower surface of the chassis 26 and projects downward from the mounting plate 40. A cylindrical tubular portion 42, a rod 44 fitted in the tubular portion 42, and a pedaling portion 48 protruding rearward from the tubular portion 42 and rotatably attached to the tubular portion 42 in the vertical direction. I have. When the treading portion 48 is stepped on, as shown in FIG. 9, the rod 44 advances downward, and the disk-shaped pressing plate 46 provided at the tip of the rod 44 comes into contact with the flat surface F and presses the flat surface F. .. As a result, the rear portion of the vehicle body of the serving vehicle 10 is lifted, and the serving vehicle 10 is braked. When the treading portion 48 is stepped on again in this state, the rod 44 retracts upward and the braking of the serving wheel 10 is released.

In a state where the serving wheel 10 is braked by the pedal lock 38, generally, between the outer surface of the rod 44 and the inner surface of the tubular portion 42, the inner surface of the rod 44, and the connecting portion of the treading portion 46 and the rod 44. As shown in FIG. 9, the serving wheel 10 swings in the left-right direction because a gap is created between the serving wheel and the outer surface. Further, when the rod 44 is advanced downward, the rod 44 is likely to bend, so that the serving wheel 10 swings greatly. At this time, as shown in FIG. 6, the rear end side of the serving wheel 10 swings in the left-right direction with an amplitude A1 with the pair of fixed wheels 36 as fulcrums, and the front end side of the serving wheel 10 is a pair of fixed wheels. With 36 as a fulcrum, it is assumed that it swings in the left-right direction with an amplitude A2. The magnitude of the amplitude A2 on the front end side of the serving wheel 10 is such that the pair of fixed wheels 36 are arranged closer to the front free wheel 32 than the rear free wheel 34, so that the rear end portion of the serving wheel 10 is located. It is smaller than the amplitude A1 on the side. Thereby, for example, even if the soup meal is placed on the side table 24 with the side table 24 standing on the front side of the top plate 20 or in front of the storage chamber 12, the amplitude A2 is suppressed to be smaller than the amplitude A1. Therefore, the spillage of food due to shaking is suppressed.

The serving car 10 can be changed from the five-wheel configuration shown in FIG. 2 to the four-wheel configuration shown in FIG. When changing from the 5-wheel configuration to the 4-wheel configuration, first, as shown in FIG. 10, the front free wheel 32 is removed from the third mounting portion 56. Next, the pair of fixed wheels 36 are removed from the first mounting portion 52. Next, as shown in FIGS. 10 and 11, the pair of fixed wheels 36 are attached to the second attachment portion 54. As a result, the serving car 10 is changed from the five-wheel configuration to the four-wheel configuration. As described above, when changing from the five-wheel configuration to the four-wheel configuration, the four-wheel configuration can be changed without newly preparing the free wheel 30 or the fixed wheel 36. In addition, the chassis 26 can be changed to a four-wheel configuration without newly drilling screw holes.

As shown in FIG. 6, the turning radius when the serving wheel 10 having a five-wheel configuration is turned is equal to the length L3 from the pair of fixed wheels 36 to the rear end of the serving wheel 10. On the other hand, the turning radius of the serving wheel 10 in the four-wheel configuration is larger than the turning radius in the five-wheel configuration because the second mounting portion 54 is arranged in front of the first mounting portion 52. However, since the position of the fixed wheel 36 is arranged in front of the serving wheel 10 having a five-wheel configuration, it becomes easier to perform operations such as width adjustment. As described above, if it is desired to keep the turning radius of the serving wheel 10 small, a five-wheel configuration can be used, and if there are many operations such as width adjustment, a four-wheel configuration can be used.

According to this embodiment, the following actions and effects are exhibited.
The serving car 10 of the present embodiment is a serving car 10 having a storage chamber 12, and is a chassis 26 for loading the storage chamber 12 and a front side universal wheel 32 arranged on the front side of the chassis 26 and capable of changing the direction of the wheels. And, it is arranged on the rear side of the chassis 26 and is arranged between the rear free wheel 34 which can change the direction of the wheel, and the front free wheel 32 and the rear free wheel 34 of the chassis 26, and the direction of the wheel is fixed. The fixed ring 36 is provided, and the fixed ring 36 is arranged at a position closer to the front free wheel 32 than the rear free wheel 34.

According to the present embodiment, when the serving wheel 10 turns, it turns with the fixed wheel 36 as a fulcrum, but the fixed wheel 36 is arranged between the front free wheel 32 and the rear free wheel 34. There is. As a result, the fixed wheel 36 is located at the rear as compared with the configuration in which the fixed wheel is arranged on the front side and the free wheel is arranged on the rear side as in the conventional four-wheel specification serving car. The turning radius can be reduced.
Further, when the serving wheel 10 is brought closer to the wall, it is generally easier to operate the fixed wheel 36 which is the fulcrum of turning when the position of the fixed wheel 36 is in the front, but the fixed wheel 36 is a front free wheel. It is located close to 32. As a result, the fixed wheel 36 is located in the front as compared with the configuration in which the fixed wheel is arranged in the center between the front free wheel and the rear free wheel as in the conventional 6-wheel specification serving car. Therefore, operations such as width adjustment can be easily performed.

Further, the rear universal wheels 34 may be provided in pairs on the left and right, the fixed wheels 36 may be provided in pairs on the left and right, and the front flexible wheels 32 may be provided in the center in the left-right direction.

By adopting a five-wheel configuration in which the number of front free wheels 34 is one, the ground contact area of the front free wheels 34 is reduced as compared with a configuration in which there are a pair of left and right front free wheels as in the conventional six-wheel configuration. , It is possible to reduce the load applied at the start of the serving vehicle 10. Further, since the number of front free wheels 34 is one, the number of parts can be reduced.

Further, a pedal lock (braking mechanism) 38 that brakes the vehicle body by coming into contact with the ground contact surface of the serving wheel 10 is provided, and the pedal lock (braking mechanism) 38 is arranged between the pair of rear free wheels 34. It may be configured as such.

When the vehicle body is braked by the pedal lock (braking mechanism) 38 arranged between the pair of rear free wheels 34, the pedal lock (braking mechanism) 38 is generally provided with play, so that the serving car is served. The rear side of 10 will swing in the left-right direction. At this time, the rear side of the serving wheel 10 swings in the left-right direction with the pair of fixed wheels 36 as fulcrums, but since the pair of fixed wheels 36 are arranged at a position close to the front free wheel 32, The swing width on the front side of the vehicle body is smaller than the swing width on the rear side of the vehicle body. Thereby, for example, it is possible to prevent the meal of the soup arranged on the front side of the top plate (upper surface) 20 of the storage chamber 12 from spilling due to shaking.

Further, the front universal wheel 32 is detachably attached to the chassis 26, and the pair of fixed wheels 36 are detachably attached to the pair of first attachment portions 52 provided on the chassis 26. When the front free wheel 32 is removed from the chassis 26 and the pair of fixed wheels 36 are removed from the first mounting portion 52, the pair of second mounting portions 54 to which the removed pair of fixed wheels 36 can be mounted are attached. Is separately provided, and the pair of second mounting portions 54 may be arranged in front of the pair of first mounting portions 52.

Generally, when the position of the fixed wheel 36, which is the fulcrum of turning, is on the front side, it is easier to perform operations such as adjusting the width of the serving wheel 10. Therefore, by configuring as described above, for example, by removing the front free wheel 32 and replacing the pair of fixed wheels 36 from the first mounting portion 52 to another second mounting portion 54, a five-wheel configuration is performed. Therefore, it is possible to change the position of the fixed wheel 36 to a four-wheel serving serving vehicle further forward. This makes it possible to change to a four-wheel configuration as appropriate when many operations such as width adjustment are required.

Further, the front free wheel 32 may be configured to be located above the fixed wheel 36 and the rear free wheel 34.

Since the front free wheel 32 is located above the fixed wheel 36 and the rear free wheel 34, the ground pressure of the front free wheel 32 is fixed when the serving wheel 10 is placed on the plane F. It is lower than the contact pressure of the ring 36 and the rear universal wheel 34. As a result, the load applied when the serving vehicle 10 is started is reduced, and the load applied when the serving vehicle 10 is turned back is also reduced. Further, when the serving wheel 10 approaches the ascending inclined surface S, the fixed wheel 36 easily touches the ascending inclined surface S, so that only the front free wheel 32 and the rear free wheel 34 touch the ground, and the serving wheel 10 makes contact. It suppresses the ability to move freely back and forth and left and right.

<Other embodiments>
The present invention is not limited to the embodiments described above and the drawings, and for example, the following embodiments are also included in the technical scope of the present invention.
(1) In the present embodiment, the length L2 between the fixed wheel 36 and the rear free wheel 34 is about 3/4 of the length L1 between the front free wheel 32 and the rear free wheel 34. Although the length is set, the position of the fixed wheel 36 may be arranged at any position as long as it is arranged closer to the front free wheel 32 than to the rear free wheel 34.
(2) In the present embodiment, the configuration for changing from the five-wheel configuration to the four-wheel configuration is shown. For example, the front free wheel 32 of the third mounting portion 56 is removed from the five-wheel configuration, and the pair of second wheels is removed. By mounting a pair of front free wheels on the mounting portion 54, the configuration may be changed to a 6-wheel configuration.

10 ... Serving car 12 ... Storage room 26 ... Chassis 32 ... Front free wheel 34 ... Rear free wheel 36 ... Fixed wheel 38 ... Pedal lock (braking mechanism)
52 ... First mounting portion 54 ... Second mounting portion

Claims (3)

It is a serving car with a storage room,
The chassis on which the storage room is loaded and
A front free wheel that is arranged on the front side of the chassis and can change the direction of the wheels,
Rear free wheels that are arranged on the rear side of the chassis and can change the direction of the wheels,
A fixed wheel arranged between the front free wheel and the rear free wheel of the chassis and having a fixed wheel orientation is provided.
The fixed ring is arranged at a position closer to the front free wheel than the rear free wheel.
It is possible to convert between a 5-wheel configuration and a 4-wheel configuration.
In the five-wheel configuration,
A pair of left and right rear universal wheels are provided.
A pair of left and right fixed wheels are provided.
One front free wheel is arranged in the center in the left-right direction, and is detachably attached to the chassis.
The pair of fixed wheels are detachably attached to a pair of first mounting portions provided on the chassis.
When the front free wheel is removed and the pair of fixed wheels are removed from the first mounting portion, the chassis has a pair of second mounting portions to which the removed pair of fixed wheels can be mounted. It is provided separately,
The pair of second mounting portions is arranged in front of the pair of first mounting portions .
In the four-wheel configuration,
The front free wheel is removed, the pair of fixed wheels are removed from the first mounting portion, and the removed pair of fixed wheels is attached to the pair of second mounting portions.
A serving car with a foldable side table on the front of the storage room . Equipped with a braking mechanism that brakes the vehicle body by contacting the ground plane of the serving car.
The serving wheel according to claim 1, wherein the braking mechanism is arranged between the pair of rear free wheels. The serving wheel according to claim 1 or 2, wherein the front free wheel is located above the fixed wheel and the rear free wheel.

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