JP7134500B2 - trolley - Google Patents

Description

The present invention relates to a carriage.

As a carriage for carrying a load, the applicant has proposed a carriage that can be transported and moved in a stable state even in a place with no flatness, as shown in the following patent document.
JP 2009-220653 A

As shown in FIGS. 10 to 12, this consists of 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. A caster 2 having wheels 2a rotatably attached to a pedestal 2b is provided on the lower side of the carriage body.

The frame 6 is formed by butt-welding square pipes in the vertical and horizontal directions to form a lattice. 9 are attached with blind rivets 10. The number of attachment points of the mounting plate 9 is six in total, excluding the six points in the left and right central sections 8 .

In this way, in the carrier trolley with the casters 2 attached to at least four corners of the periphery of the rear surface of the trolley body with the base 7 mounted on the frame 6, inside the contour line connecting the swivel casters 2 attached at least at the four corners, Two or more casters 2 are provided in a column in the same direction as the traveling direction of time. This caster 2 is a swivel caster or a fixed caster.

Next, a method for overcoming the groove α will be described with reference to FIG. Even if the left and right front wheels of the caster 2 fit into the groove α as shown in FIG. The trolley body can be supported in a stable state by a total of four wheels including casters 2 of the rear two wheels, and the trolley body will not tilt.

Further forward to reach the position of FIG. 8(c), and when the front one of the two casters 2 in the central column is fitted in the groove α, the four casters 2 on the front, back, left and right and the casters 2 in the central column The trolley body can be supported in a stable state by a total of five wheels including the remaining caster wheel 2 on the rear side.

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 on the front center column and the two casters 2 on the left and right front wheels are used. The trolley body can be supported in a stable state, and in any case the trolley body does not incline and can be safely climbed over the grooves α one by one.

Of the six casters 2, the ones that are placed at the four corners of the truck body are fitted with corner members 5 for inserting the push rods 3. It is attached to the inside of the truck 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, the brake-equipped caster has a foot-operated brake pedal 33 extending from the yoke 2c of the caster 2 connected to the mounting plate 9 as shown in FIG. It was difficult to confirm its existence because it was on the lower side and was hidden by the main body of the bogie.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a carriage which eliminates the inconveniences of the conventional example and which can quickly grasp the presence of a brake.

In order to achieve the above object, the present invention firstly provides a carrier having a substantially rectangular carrier body elongated in the front-rear direction and swivel casters attached to the rear side of the corner portion of the carrier body, the carrier comprising : The main body is constructed by joining the frames at the four corners of the bogie main body through corner members into which push rods are inserted from above, and the swivel casters are yokes and can be rotated by the yokes. and a brake pedal for fixing the rotation of the wheel. and an operation part that is pushed up by the foot when the brake is released, and when the brake is released and the wheel is oriented in the front-rear direction, the operation part is positioned behind the wheel , The corner members are located lower than the lower end of the corner member, which is lower than the frame, and when viewed in plan, the wheels overlap the carriage body without being exposed from the carriage body, and the operation portion is a foot. The gist of the invention is that the wheel is positioned in a central gap formed by the pair of metal plate portions and the operation portion when the brake is stepped on.

Secondly, when the wheel is oriented in the front-rear direction during braking by stepping on the operation part with the foot, the operation part is closer to the wheel than when the brake is released. The gist of the invention is that the wheels are visible on the rear side through the central gap.

Thirdly, when the brake is released and the wheel is oriented in the front-rear direction and viewed from the side, the metal plate portion has a dent in a part of the upper surface, and the dent and the bogie body are located behind the carriage body. The gist of the term "end" is that it is located above and below.

Fourthly, when the brakes are released and the wheels are oriented in the front-rear direction, the operating portion is positioned so as to protrude from the periphery of the bogie body.

Fifthly, the brake pedal is swingable, and when the brake pedal is stepped on with a foot and the wheels are oriented in the front-rear direction, the outer edge of the operation portion can be seen in a plan view. is positioned closer to the periphery of the bogie body than when the brake is released.

Sixthly, the brake pedal is swingable, and when the brake pedal is stepped on with the foot and the wheels are oriented in the front-rear direction, when viewed from above, the operation unit is configured to: The gist of the present invention is that it is positioned so as to overlap the bogie body without protruding from the periphery of the bogie body.

Seventh, the corner member is provided with a colored portion having a color different from that of the frame on the outer periphery, and when the brake is released and the wheel is oriented in the front-rear direction, the operating portion and the colored portion are positioned in the front and rear.

Eighth, the corner member is provided with a colored portion having a color different from that of the frame on the outer periphery, and when viewed from the side with the wheel facing forward and backward, the brake pedal and the colored portion are separated from each other. The gist of this is that they are positioned above and below.

According to the present invention, of the corners, the corners where the casters with brakes are provided on the back side are colored, so that by visually observing the coloring, it is possible to tell which casters under which corners are equipped with brakes. You can know immediately.

In addition, when viewed from the side in a direction orthogonal to the traveling direction of the carriage, the brake pedal can be seen below the coloring. Existence can be quickly grasped.

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

In addition, when the wheels face forward and backward, the brake pedal is visible from above because the operation unit is located behind the wheels, so that the presence of the brake can be quickly grasped.

As described above, the carriage of the present invention can quickly recognize the existence of the brake.

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a side view showing an embodiment of the carriage of the present invention when the brake is released, FIG. 2 is a plan view of the same, FIG. 3 is a side view of the brake, and FIG. 4 is a plan view of the same. A pedestal is placed below a substantially rectangular carriage body that is elongated in the front-rear direction and is composed of a frame 6 made of square pipes and a base 7 that is a mounting plate made of iron or aluminum alloy that is joined to the upper part of the frame 6. 2b is provided with casters 2 to which wheels 2a are rotatably attached.

As shown in FIGS. 2 and 3, it is composed of 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 and joined to the upper part of the frame 6. A caster 2 having wheels 2a rotatably attached to a pedestal 2b is provided on the lower side of the carriage body.

The frame 6 is formed by butt-welding square pipes in the vertical and horizontal directions to form a lattice. 9 are attached with blind rivets 10 (see FIG. 10). The number of attachment points of the mounting plate 9 is six in total, excluding the six points in the left and right central sections 8 .

In addition to the casters 2 attached to at least the four corners of the peripheral portion of the rear surface of the bogie body, the casters 2 are arranged in columns in the same direction as the traveling direction during use inside the outline connecting the swivel casters 2 attached at least to the four corners. A caster 2 that is more than a wheel is provided.

At the four corners of the bogie body, the vertical and horizontal square pipes forming the frame 6 are formed of extruded members of aluminum or the like, and joined with corner members 5 having an L-shaped plane as a whole.

The bogie body has a frame 6 and corner members 5 that join the frames 6 together at four corners of the bogie body. 8 and 9, the corner member 5 has a cylindrical insertion hole 12 with an arcuate outer peripheral surface into which the push rod 3 is inserted. Side wall members 13a and 13b, which face each other as mounting portions for the frame 6, are vertically protruded from 12 points in directions perpendicular to each other.

Out of the side wall members 13a and 13b, the side wall member 13b located on the outer side is continuous with 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, At the end, it is almost the same height as the frame 6, and the base is formed with an inclined portion 14. As shown in FIG.

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 is provided for this purpose.

To attach the corner member 5 to the frame 6 as described above, the frame 6 is inserted into the gap between the opposing side wall members 13a and 13b. In this case, since the space between the side wall members 13a and 13b is formed with openings on 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 located at the corner portions are opposite to this. A corner member 5 may be inserted into the frame 6 . Also, it can be inserted 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 rivets 15 or the like, it is not necessary for the frame 6 to be made of the same material as the corner member 5 made of aluminum.

In the carriage with the corner member 5 attached as described above, since the corner member 5 having an arc-shaped outer peripheral portion is attached to the corner portion that is likely to come into contact with other objects, the impact is absorbed and the corner member 5 is damaged. When the corner member 5 is to be replaced, it can be removed only by removing the rivet 15 or the like, and the new corner member 5 can be replaced simply by fixing it with the rivet 15.例文帳に追加

Further, an insertion hole 12 for the push rod 3 is formed in the corner member 5, 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 not only from contact with other objects but also from the inside as described above, it is effective to facilitate replacement of the corner member 5. be.

By the way, the casters 2 include casters with brakes and casters without brakes, and the casters with brakes are provided on both the front and rear or either one of the four corners of the truck body, and on both the left and right or one of the corners. be done.

In the present invention, of the four corners of the bogie body on which the casters are provided, the corners on which casters with brakes are provided on the back side are colored (for example, red or green), and a colored portion 1 is provided.

For example, when the corner portion is made of an aluminum alloy material, the coloring portion 1 is formed by baking or the like. Apply.

In this manner, one corner portion is provided with an insertion hole 12 into which a push rod is inserted from above, and colored portions extending from the portion where the insertion hole 12 is formed along the side surfaces of the frame in directions perpendicular to each other. will be established.

The brake-equipped caster comprises a yoke (gripping body) 2c, wheels 2a, brake shoes 16, and a brake pedal 17, as shown in FIGS.

The yoke (gripping body) 2c is made by bending a metal plate and is attached below the mounting plate 9, and the brake shoe 16 is made by bending a metal plate and has a brake lining (Fig. not shown).

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

The brake pedal 17 consists of a U-shaped arm with the operation portion 18 at one end closed and a gap 19 formed in the center. formed to jump up.

The operating portion 18 is positioned so as to protrude from the rear end of the truck body, and is positioned lower than the lower end of the corner member 5 when viewed from the side.

In this manner, when the brake pedal 17 is released and the wheels are oriented in the front-rear direction, the brake pedal 17 is tilted downward from one supported end toward the other end. , and then jumps upward.

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

Further, the operating portion 18 formed to be flipped up is provided with a foot piece 20 protruding forward. The foot pieces 20 are substantially plate-shaped and protrude in a direction away from the carriage body.

As shown in FIGS. 1 and 2, when the wheels 2a of the brake pedal 17 are oriented in the front-rear direction when the brake is released, the operation portion 18 appears from the rear end of the bogie body in plan view. I assumed. In this case, as shown in FIGS. 1 and 2, when the wheels 2a are oriented in the front-rear direction and viewed from above, the wheels 2a do not protrude from the rear end of the bogie body. overlaps with

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

As shown in FIG. 2, the swivel casters with brakes are attached to the carriage body via mounting plates 9, and when the carriage is viewed in plan, the casters are mounted through the gap between the frame 6 and the mounting plate 9. A portion of the brake pedal 17 is visible.

When the brake pedal 17 is depressed, the brake shoe 16 is pressed against the wheel 2a to fix the wheel 2a.To release the brake, the brake pedal 17 is pushed up. , the engagement of the brake shoe 16 with the wheel 2a is released.

When the brake is released and the wheels face forward and backward, the operating portion of the brake pedal 17 is located behind the wheels as shown in FIG. It is located even lower than the lower end, which is located lower than

When the casters with brakes are attached to at least one of the four corners of the periphery of the rear surface of the truck body, corner members 5 for inserting the push rod 3 are attached to the four corners, so the push rod 3 and the corner member It is attached to the inside of the bogie main body from the hanging part by the amount of "turning eccentric radius + caster radius" so that it can be rotated while avoiding 5.

As a result, the position of the brake pedal 17 is hidden behind the body of the bogie and the position of the brake pedal 17 is not known depending on the direction of the wheels 2a and the braking state. That is, the position of the brake pedal 17 is hidden behind the body of the bogie when the wheels are oriented or when the brakes are applied. When the state is viewed in a plan view, the operation portion is positioned so as to overlap the carriage body without being exposed from the periphery of the carriage body.

Therefore, with the colored portion 1, out of the four corners of the trolley body where the casters are installed, the corners where the casters with brakes are installed on the back side can be grasped. Since the brake pedal 17 protrudes from the periphery of the truck body when 2a is oriented in the front-rear direction, the brake can be reliably applied.

In addition to those attached to at least four corners of the peripheral portion of the rear surface of the carriage body, the carriage is mounted inside the contour line that connects the swivel casters 2 attached to at least the four corners in the same direction as the traveling direction during use. Although it is assumed that two or more casters are provided in tandem, it is not limited to this. In a transport truck in which three swivel casters 2 are attached to each of the three wheels in a vertical row, the caster in the middle of the three casters is arranged outside the two swivel casters on the front and rear wheels, or the trolley body It can be applied to various types, such as those provided with casters only at least at the four corners of the peripheral portion of the back surface.

It is a side view at the time of brake release showing one embodiment of the carriage of the present invention. 1 is a plan view showing one embodiment of a carrier of the present invention when a brake is released; FIG. FIG. 2 is a side view of one embodiment of the carrier of the present invention during braking. FIG. 2 is a plan view showing one embodiment of the carrier of the present invention during braking. It is a side view of the caster with a brake used by this invention. It is a front view of the caster with a brake used by this invention. It is a bottom view of the caster with a brake used by this invention. It is a top view of a corner member. FIG. 4 is a side view of a corner member; It is a bottom view of a carrier. It is a top view of a carrier. It is a side view of a carrier. It is explanatory drawing which shows the use condition of a carrier. It is a side view of the conventional caster with a brake.

1 colored part 2 caster 2a wheel 2b base 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 portion 15 rivet 16 Brake shoe 17 Brake pedal 18 Operation part 19 Gap 20 Foot piece 33 Brake pedal

Claims (8)

Roughly rectangular shaped A transport trolley having a trolley body and swivel casters attached to the back side of corner portions of the trolley body,
The trolley body is configured by joining frames at four corners of the trolley body via corner members into which push rods are inserted from above,
The swivel caster includes a yoke and a wheel rotatably gripped by the yoke;
a brake pedal for fixing the rotation of the wheel;
The brake pedal is connected to a pair of metal plate portions and one end of the pair of metal plate portions, respectively, so that the brake pedal can be stepped on with a foot during braking.push up with your foot when the brake is released.and an operation unit,
When the brake is released and the wheels are oriented in the front-rear direction, the operation unit is positioned rearward of the wheels.In addition, the corner member is positioned further lower than the lower end of the corner member positioned lower than the frame, and the wheel overlaps the carriage body without being exposed from the carriage body when viewed in a plan view,
A carrier according to claim 1, wherein said wheel is positioned in a center gap formed by said pair of metal plate portions and said operating portion when braking is performed by stepping on said operating portion. When the wheel is oriented in the front-rear direction when the brake is applied by stepping on the operation unit, the operation unit is positioned closer to the wheel than when the brake is released. 2. The trolley according to claim 1, wherein said wheel protruding rearward through said center gap is visible. When the brake is released and the wheel is oriented in the front-rear direction and viewed from the side, the metal plate portion has a dent in a part of the upper surface, and the dent and the rear end of the bogie body are vertically aligned. 3. A carriage according to claim 1 or claim 2, characterized in that it is located in the . When the brake is released and the wheels face forward and backward, 4. The carrier according to any one of claims 1 to 3, wherein the operating portion is positioned so as to protrude from the periphery of the carrier body. The brake pedal is swingable, and when the brake pedal is stepped on with a foot and the wheels are oriented in the front-rear direction in a plan view, the outer edge of the operation portion is positioned when the brake is released. 5. The transport trolley according to any one of claims 1 to 4, wherein the transport trolley is located closer to the periphery of the trolley body than the carriage body. The brake pedal is swingable, and when the brake pedal is stepped on with the foot and the wheels are oriented in the front-rear direction, the operating portion is positioned around the bogie body when viewed from above. 6. The carrier according to any one of claims 1 to 5, wherein the carrier is positioned so as to overlap with the carrier body without protruding from the body. The corner member is provided with a colored portion having a color different from that of the frame on the outer periphery thereof, and when the brake is released and the wheel is oriented in the front-rear direction, the operation portion and the colored portion are arranged in plan view. 7. The carrier according to any one of claims 1 to 6, wherein and are located in front and rear. The corner member is provided with a colored portion having a color different from that of the frame on its outer periphery, and when viewed from the side with the wheel facing forward and backward, the brake pedal and the colored portion are vertically positioned. 7. The carrier according to any one of claims 1 to 6, characterized in that:

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