JP2020196446A - Carriage truck - Google Patents

Abstract

To provide a carriage truck capable of grasping presence of a brake rapidly.SOLUTION: A carriage truck has a truck body and a rotation caster 2 mounted on a rear side of a corner part of the truck body. The rotation caster 2 has: a yoke 2c; a wheel 2a gripped rotatably by the yoke 2c; and a brake pedal 17 for fixing rotation of the wheel 2a. The brake pedal 17 has an operation part 18 depressed by foot in braking. When a brake is released and in a state in which the wheel 2a is directed in a cross direction, the operation part 18 is positioned on a rear side from the wheel 2a.SELECTED DRAWING: Figure 1

Description

The present invention relates to a transport trolley.

As a transport trolley on which luggage is placed and transported, the applicant has proposed a transport trolley capable of transporting and moving in a stable state even in a place with no flatness, as shown in the following patent document.
JP-A-2009-220653

This is a frame 6 made of square pipes made of iron or aluminum alloy and a base 7 which is a mounting plate made of iron or aluminum alloy joined to the upper part of the frame 6 as shown in FIGS. 10 to 12. A caster 2 having wheels 2a rotatably attached to a pedestal 2b is provided on the lower side of the main body of the trolley.

In the frame 6, square pipes are joined in the vertical and horizontal directions and formed in a grid pattern by welding, and the mounting plate of the caster 2 is formed on the lower surface of the grid-shaped frame 6 in a section 8 where the casters 2 are expected to be mounted. 9 is attached with a blind rivet 10. There are a total of 6 mounting locations for the mounting plate 9, excluding a total of 6 locations in the left and right central compartments 8.

In a transport trolley in which casters 2 are attached to at least four corners of the back surface of the trolley body in which the base 7 is attached on the frame 6 in this way, it is used inside the contour line connecting the turning casters 2 attached to the at least four corners. Two or more wheels of casters 2 were provided in a column in the same direction as the traveling direction of time. The casters 2 are swivel casters or fixed casters.

Next, a method of overcoming the groove α will be described with reference to FIG. In the figure, 3 is a push rod, and even if the left and right front wheels of the caster 2 are fitted in the groove α as shown in FIG. 13 (b) by pushing the transport trolley, in this state, the two casters 2 and the left and right in the central column behind the caster 2 are fitted. The dolly body can be supported in a stable state with a total of four wheels, including the rear two-wheel casters 2, and the dolly body does not tilt.

Further forward, when the position shown in FIG. 8C is reached and the front one of the two casters 2 in the central column fits into the groove α, the four casters 2 in the front, rear, left and right and the center column The dolly body can be supported in a stable state with a total of five wheels, the remaining one rear wheel, the caster 2.

Finally, even if the two casters 2 on the left and right rear wheels fit into the groove α, in this state, the two casters 2 in the center column in front of it and the two casters 2 on the left and right front wheels, for a total of four wheels. The dolly body can be supported in a stable state, and in either case, the dolly body does not tilt, and the groove α can be safely overcome in sequence.

Of the six-wheel casters 2, those arranged at the corners of the four corners of the bogie body have the corner members 5 for inserting the push rods 3 attached thereto, so that the push rods 3 and the corner members 5 are attached. It is attached to the inside of the bogie body from the hanging part by the amount of "turning eccentric radius + caster radius" so that it can be avoided and rotated.

On the other hand, in the caster with a brake, as shown in FIG. 14, a foot-operated brake pedal 33 is provided from the yoke 2c of the caster 2 connected to the mounting plate 9, and the presence of the brake pedal 33 is present in the bogie body. It was difficult to confirm its existence because it was on the lower side and hidden behind the dolly body.

An object of the present invention is to provide a transport trolley capable of quickly grasping the existence of a brake by eliminating the inconvenience of the conventional example.

In order to achieve the above object, the present invention is firstly a transport trolley having a trolley main body and a swivel caster attached to the back side of a corner portion of the trolley main body, and the swivel caster is a yoke and the yoke. The wheel has a wheel rotatably gripped by the wheel and a brake pedal for fixing the rotation of the wheel. The gist is that the operation unit is located on the rear side of the wheel when the wheel is facing the front-rear direction.

Secondly, the gist is that the operation unit is located so as to be exposed from the periphery of the bogie body.

Thirdly, the brake pedal is swingable, and when the brake is stepped on by the foot and the wheel is oriented in the front-rear direction in a plan view, the outer edge of the operation unit is viewed. The gist is that the wheel is located closer to the periphery of the bogie body than when the brake is released.

Fourth, when the brake pedal is swingable and the state in which the wheels are oriented in the front-rear direction is viewed in a plan view when the brake is stepped on by the foot, the operation unit is described. The gist is that it is located so as not to be exposed from the periphery of the bogie body and to overlap with the bogie body.

Fifth, the dolly body has a frame, and the corner portion is provided with a colored portion having a color different from that of the frame on the outer periphery, and the state in which the wheel faces the front-rear direction when the brake is released is a flat surface. The gist is that the operating portion and the colored portion are located in the front-rear direction when viewed visually.

Sixth, when the dolly body has a frame, the corners are provided with colored portions having a color different from that of the frame on the outer periphery, and the wheels are facing in the front-rear direction when viewed from the side. The gist is that the brake pedal and the colored portion are located vertically.

According to the present invention, among the corners, the corners where the casters with brakes are provided on the back side are colored, and by visually observing this coloring, it is possible to determine which casters under the corners have brakes. You can know immediately.

Further, when the brake pedal is viewed from the side, which is a direction orthogonal to the traveling direction of the transport carriage, the brake pedal is visually recognized under the coloring, so that the brake can be colored in response to the coloring of the corner portion. You can quickly grasp the existence.

Further, since the outer circumference of the colored portion is located outside the side surface of the frame, it can be made conspicuous.

Further, when the wheels are facing in the front-rear direction, the operation unit is located on the rear side of the wheels, so that the brake pedal can be visually recognized from above, so that the presence of the brake can be quickly grasped.

As described above, the transport trolley of the present invention can quickly grasp the existence of the brake.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view when the brake is released, FIG. 2 is a plan view of the same as above, FIG. 3 is a side view of the same as above, and FIG. 4 is a plan view of the same as above, showing an embodiment of the carrier of the present invention, made of iron or aluminum alloy. Wheels 2a can be rotatably mounted on a pedestal 2b under a bogie body composed of a frame 6 made of a square pipe and a base 7 which is a mounting plate made of iron or aluminum alloy joined to the upper part of the frame 6. It is provided with the attached casters 2.

As shown in FIGS. 2 and 3, the frame 6 is made of a square pipe made of iron or aluminum alloy, and the base 7 is a mounting plate made of iron or aluminum alloy joined to the upper part of the frame 6. A caster 2 having wheels 2a rotatably attached to a pedestal 2b was provided on the lower side of the bogie body.

In the frame 6, square pipes are joined in the vertical and horizontal directions and formed in a grid pattern by welding, and the mounting plate of the caster 2 is formed on the lower surface of the grid-shaped frame 6 in a section 8 where the casters 2 are expected to be mounted. 9 is attached with a blind rivet 10 (see FIG. 10). There are a total of 6 mounting locations for the mounting plate 9, excluding a total of 6 locations in the left and right central compartments 8.

The casters 2 are attached to at least four corners of the back surface of the back surface of the bogie body, and inside the contour line connecting the turning casters 2 attached to at least the four corners, 2 in a column in the same direction as the traveling direction during use. A caster 2 having a ring or more was provided.

At the corners of the four corners of the bogie body, the vertical and horizontal square pipes constituting the frame 6 are formed of an extruded shape material such as aluminum, and are joined by corner members 5 having an L-shaped flat surface as a whole.

The bogie body has a frame 6 and a corner member 5 that joins the frames 6 to each other at four corners of the bogie body. The details of the corner member 5 are shown in FIGS. 8 and 9. An insertion hole 12 having a tubular shape and an arcuate outer peripheral surface into which the push rod 3 is inserted is formed in an L-shaped corner portion, and the insertion hole is formed. The side wall members 13a and 13b facing each other as mounting portions of the frame 6 were vertically projected from the 12 positions in the directions orthogonal to each other.

Of the side wall members 13a and 13b, the side wall member 13b located on the outer side is coupled to the outer peripheral portion of the insertion hole 12, and has the same height as the insertion hole 12 at the connection portion with the insertion hole 12. The end portion has substantially the same height as the frame 6, and the base portion is formed on the inclined portion 14.

The corner member 5 is provided with an insertion hole 12 in which the push rod 3 inserted from above is supported at a position lower than the lower end of the frame 6, and the bottom of the insertion hole 12 prevents the push rod 3 from falling off. A support plate 12a for the purpose is provided.

In order to attach the corner member 5 to the frame 6 as described above, the frame 6 is inserted into the gap between the side wall members 13a and 13b facing each other. In this case, since the side wall members 13a and 13b are formed with openings at both the top and bottom, even if the frame 6 is inserted between the side wall members 13a and 13b, the vertical and horizontal positions are located at the corners on the contrary. The corner member 5 may be inserted into the frame 6. In addition, the insertion direction can be from either the top or the bottom.

With the frame 6 inserted between the side wall members 13a and 13b, the corner member 5 is fixed to the frame 6 with rivets 15 or bolts. Since the connection with the frame 6 uses a rivet 15 or the like, the frame 6 does not have to be made of the same material as the aluminum corner member 5.

In the transport trolley to which the corner member 5 is attached as described above, since the corner member 5 having an arcuate outer circumference is attached to the corner portion that easily comes into contact with other objects, the impact is absorbed and the corner member 5 is damaged. When it is replaced by rivet 15 or the like, it can be removed by simply removing the rivet 15, and the new corner member 5 can be easily replaced because it is only necessary to fix it with the rivet 15.

Further, the corner member 5 is formed with an insertion hole 12 for the push rod 3, and an excessive moment from the push rod 3 is applied to the insertion port here. Considering that the corner member 5 has a portion that is easily deformed from the inside as well as contact with other objects, it is effective to make it easy to replace the corner member 5. is there.

By the way, the casters 2 include casters with brakes and casters without brakes, and casters with brakes are provided on both front and rear or one of the four corners of the bogie body, and on both the left and right sides or one of them. Be done.

In the present invention, among the four corners of the bogie main body provided with the casters, the corners provided with the casters with brakes on the back side are colored (for example, red or green) to provide the colored portions 1.

As an example, when the corner portion is made of an aluminum alloy material, the colored portion 1 is performed by baking or the like, and the entire surface of the side wall member 13b located on the outer side of the side wall members 13a and 13b of the corner member 5 forming the corner portion Give.

In this way, the one corner portion is provided with an insertion hole 12 into which the push rod is inserted from above, and a colored portion extending from the formed portion of the insertion hole 12 in a direction orthogonal to the side surface of the frame. It will be provided.

As shown in FIGS. 5 to 7, the caster with a brake includes a yoke (grip body) 2c, wheels 2a, a brake shoe 16, and a brake pedal 17.

The yoke (grip body) 2c is formed by bending a metal plate and is attached below the mounting plate 9, and the brake shoe 16 is formed by bending a metal plate and has a brake lining (FIG. FIG. (Not shown) is provided.

The brake pedal 17 is formed by bending a metal plate, and by stepping on an operation portion 18 at one end to swing the brake pedal 17, the brake shoe 16 is pressed against the wheel 2a to fix the wheel 2a.

The brake pedal 17 is composed of a U-shaped arm having an operating portion 18 at one end as a closed end and a gap 19 formed in the center. The arm is gently curved so as to draw a concave shape, and the operating portion 18 is an end. Was formed to flip up.

The operation unit 18 is located so as to be exposed from the rear end of the bogie main body, and when viewed from the side, the operation unit 18 is located lower than the lower end of the corner member 5.

In this way, when the brake pedal 17 is viewed from the side when the brake is released and the wheels are oriented in the front-rear direction, the brake pedal 17 is tilted downward from one end supported by the axle toward the other end. After that, it has a shape that jumps upward.

Further, when the brake is stepped on by the foot, the wheel 2a is positioned so that the wheel is located in the central gap of the U-shaped arm and enters the gap 19 of the brake pedal 17.

Further, the operating portion 18 formed so as to be flipped up is provided with the foot tread piece 20 protruding forward. The foot tread piece 20 has a substantially plate-like shape protruding in a direction away from the bogie body.

Then, as shown in FIGS. 1 and 2, when the wheel 2a faces the front-rear direction when the brake is released, the operation unit 18 is exposed from the rear end of the bogie body in a plan view. I made it. As shown in FIGS. 1 and 2, in this case, when the state in which the wheels 2a are oriented in the front-rear direction is viewed in a plan view, the wheels 2a do not appear from the rear end of the bogie body and the bogie body. Overlap with.

When the traveling direction of the transport trolley is the longitudinal direction of the transport trolley, the brake pedal 17 is visually recognized under the colored portion when viewed along the traveling direction of the transport trolley.

As shown in FIG. 2, the swivel caster with a brake is attached to the bogie body via a mounting plate 9, and when the transport bogie is viewed in a plan view, it passes through a gap between the frame 6 and the mounting plate 9. A part of the brake pedal 17 is visually recognized.

When the brake pedal 17 is stepped on, the brake pedal 17 is pushed down, the brake shoe 16 is pressed against the wheel 2a to fix the wheel 2a, and the brake pedal 17 is pushed up with the foot to release the brake. , The engagement of the brake shoe 16 with the wheel 2a is released.

When the caster with a brake is attached to at least one of the four corners of the peripheral portion of the back surface of the bogie body, the corner member 5 for inserting the push rod 3 is attached to the four corners, so that the push rod 3 and the corner member are attached. It is attached to the inside of the bogie body from the hanging part by the amount of "turning eccentric radius + caster radius" so that it can rotate while avoiding 5.

As a result, in the direction of the wheel 2a and the braking state, the position of the brake pedal 17 is not known because it is hidden behind the bogie body. That is, the brake pedal 17 is hidden behind the bogie body and the position of the brake pedal cannot be known depending on the direction of the wheels and the braking state, and the wheels face the front-rear direction even when the brake is stepped on by the foot. When the state is viewed in a plan view, the operation unit is positioned so as not to be exposed from the periphery of the bogie body and to overlap the bogie body.

Therefore, among the four corners of the bogie body on which the casters are provided, the colored portion 1 can grasp the corners where the casters with brakes are provided on the back side, thereby recognizing the existence of the casters with brakes and the wheels when the brakes are released. When 2a faces in the front-rear direction, the brake pedal 17 is exposed from the periphery of the bogie body, so that the brake can be applied reliably.

The transport trolley is attached to at least four corners of the back surface of the trolley body, and is inside the contour line connecting the swivel casters 2 attached to at least the four corners, in the same direction as the traveling direction during use. It is assumed that two or more wheels are provided in columns, but the present invention is not limited to this. For example, as described in Japanese Patent Application Laid-Open No. 2009-227042, both left and right sides of a flat rectangular carriage body in the longitudinal direction. In a transport trolley with three slewing casters 2 mounted in columns, the caster in the middle of the three trolleys is placed outside the front and rear two slewing casters, or the trolley body. It can be applied to various types such as those having casters provided only at least four corners of the peripheral portion of the back surface.

It is a side view at the time of brake release which shows one Embodiment of the transport trolley of this invention. It is a top view at the time of brake release which shows one Embodiment of the transport trolley of this invention. It is a side view at the time of braking which shows one Embodiment of the transport trolley of this invention. It is a top view at the time of braking which shows one Embodiment of the transport trolley of this invention. It is a side view of the caster with a brake used in this invention. It is a front view of the caster with a brake used in this invention. It is a bottom view of the caster with a brake used in this invention. It is a top view of the corner member. It is a side view of a corner member. It is a bottom view of a transport trolley. It is a top view of a transport trolley. It is a side view of a transport trolley. It is explanatory drawing which shows the use state of the transport trolley. It is a side view of the conventional caster with a brake.

1 Colored part 2 Caster 2a Wheel 2b Pedestal 2c Yoke 3 Push rod 5 Corner member 6 Frame 7 Base 8 Section 9 Mounting plate 10 Blind rivet 11 Bolt and nut 12 Insertion hole 12a Support plate 13a, 13b Side wall member 14 Inclined part 15 Rivet 16 Brake shoe 17 Brake pedal 18 Operation part 19 Void 20 Foot tread 33 Brake pedal

Claims (6)

A transport trolley having a trolley body and a swivel caster attached to the back side of a corner portion of the trolley body, wherein the swivel caster includes a yoke, wheels rotatably gripped by the yoke, and rotation of the wheels. The brake pedal has an operation unit for stepping on with a foot when braking, and when the brake is released and the wheels are facing in the front-rear direction, the operation unit has a brake pedal for fixing the wheel. , A transport trolley characterized in that it is located on the rear side of the wheels. The transport trolley according to claim 1, wherein the operation unit is located so as to be exposed from the periphery of the trolley body. The brake pedal is swingable, and when the brake is stepped on by the foot and the wheel is facing the front-rear direction in a plan view, the outer edge of the operation portion is released from the brake. The transport trolley according to claim 1 or 2, wherein the trolley is located closer to the periphery of the trolley body. The brake pedal is swingable, and when the brake is stepped on by the foot and the wheel is oriented in the front-rear direction in a plan view, the operation unit is around the bogie body. The transport trolley according to any one of claims 1 to 3, wherein the transport trolley is located so as to overlap the trolley main body without being exposed from the above. The bogie body has a frame, and the corner portion is provided with a colored portion having a color different from that of the frame on the outer periphery, and a state in which the wheels are oriented in the front-rear direction when the brake is released is viewed in a plan view. The transport trolley according to any one of claims 1 to 4, wherein the operating portion and the colored portion are located in the front-rear direction. The bogie body has a frame, and the corner portion is provided with a colored portion having a color different from that of the frame on the outer periphery thereof, and when the wheel is oriented in the front-rear direction when viewed from the side, the brake pedal and the brake pedal are provided. The transport trolley according to any one of claims 1 to 5, wherein the colored portion is located vertically.