JP6833192B2 - Transport trolley - Google Patents

Description

The present invention relates to a transport trolley.

Transport trolleys that attach casters to the loading platform using bolts and nuts are known. Patent Document 1 discloses an example of a transport trolley in which casters can be attached to a loading platform in this way.

Patent No. 3806251

In order to attach the casters to the loading platform, the operator needs to insert and tighten multiple bolts into the caster pedestal. For this reason, the number of parts of the transport trolley is large, and the work procedure for attaching the casters to the loading platform increases.

An object of the present invention is to provide a transport trolley in which casters can be easily attached to a loading platform.

The transport trolley that solves the above problems includes a loading platform having a mounting portion on which the pedestal of the casters can be mounted, and a lock member that fixes the casters to the loading platform. A first restricting portion that contacts the first end portion of the pedestal so that the pedestal arranged in the arrangement portion does not move away from the loading platform, and the first end portion of the pedestal. An insertion portion into which the lock member can be inserted is provided along a second end on the opposite side, and the lock member is provided so that the pedestal arranged in the arrangement portion does not move in a direction away from the loading platform. It includes a second regulating portion that comes into contact with the second end of the pedestal.

According to the transport trolley, the operator can fix the pedestal to the mounting portion of the loading platform by arranging the pedestal of the caster in the arranging portion and inserting the lock member into the inserting portion. Therefore, the casters can be easily attached to the loading platform.

In an example of a transport trolley, the mounting portion includes a first wall and a second wall facing each other through the space of the mounting portion, one end of the first wall, and one of the second wall. The first restricting portion is provided on the third wall, and the insertion portion is on the third wall side with respect to the space of the arrangement portion. It is provided on the opposite side.
According to the transport trolley, the first wall and the second wall can regulate the casters from moving in the direction along the loading platform.

In an example of a transport trolley, the mounting portion further includes a fourth wall that supports the lock member from a side opposite to the third wall side with respect to the lock member.
According to the transport trolley, the fourth wall supports the lock member against the force applied by the pedestal to the lock member due to the movement of the transport trolley, so that the possibility that the lock member is deformed is reduced.

In an example of a transport trolley, the pedestal includes a pedestal surface to which the wheels of the casters are attached and a pedestal back surface opposite to the pedestal surface, and the arrangement portion supports the pedestal back surface and the insertion portion. Is a first insertion portion provided on the side opposite to the third wall side with respect to the space of the mounting portion, and a third insertion portion provided on the side opposite to the pedestal side with respect to the arrangement portion. The lock member includes a portion, a second insertion portion that connects the first insertion portion and the third insertion portion, and the lock member includes a first portion that is inserted into the first insertion portion and the first portion. A third portion to be inserted into the third insertion portion, a second portion to connect the first portion and the third portion, and the second portion to be inserted into the second insertion portion are provided.
According to the transport trolley, the first insertion portion and the third insertion portion can restrict the casters from moving in the normal direction of the loading platform.

In an example of a transport trolley, the insertion portion is provided along the width direction of the loading platform, and includes an insertion port opened on the side surface of the loading platform so that the lock member can be inserted.
According to the transport trolley, the operator can easily insert the lock member into the loading platform as compared with the case where the insertion port opens toward the center side of the loading platform.

In the transport trolley of the present invention, casters can be easily attached to the loading platform.

The perspective view of the transport trolley of embodiment. The side view of the caster of FIG. An enlarged view of the first corner on the back surface of FIG. FIG. 3 is a sectional view taken along line 4-4 of FIG. Perspective view of the lock member. FIG. 6 is a cross-sectional view of line 4-4 in a state where casters are arranged in the arrangement portion. Sectional drawing of line 4-4 with a caster and a lock member inserted.

(Embodiment)
The configuration of the transport carriage 10 will be described with reference to FIG. The transport trolley 10 includes four casters 20, a loading platform 30, a mounting portion 40 (see FIG. 3), and a lock member 50. The loading platform 30 includes four corner members 37 and four connecting members 38. Each corner member 37 is connected by each connecting member 38 to form a loading platform 30. In one example, the material constituting the loading platform 30 and the lock member 50 is resin. The shape of the loading platform 30 in the plan view of the loading platform 30 is a rectangular shape in which the front-rear direction of the loading platform 30 corresponds to the longitudinal direction and the width direction orthogonal to the front-rear direction corresponds to the lateral direction.

A plurality of surfaces are formed on the loading platform 30. The plurality of surfaces include a deck surface 31, a back surface 32, a first side surface 33, a second side surface 34, a third side surface 35, and a fourth side surface 36. The deck surface 31 is a surface on which luggage (not shown) is placed. An example of luggage is a container. The back surface 32 is a surface formed on the side opposite to the deck surface 31. The first side surface 33 is a surface formed on one end 30A of the loading platform 30 in the front-rear direction. The second side surface 34 is a surface formed on the other end 30B of the loading platform 30 in the front-rear direction. The third side surface 35 is a surface formed on one end 30C in the width direction of the loading platform 30. The fourth side surface 36 is a surface formed on the other end portion 30D in the width direction of the loading platform 30.

The loading platform 30 includes a first corner 30E, a second corner 30F, a third corner 30G, and a fourth corner 30H. The first corner 30E is an area located between the first side surface 33 and the third side surface 35. The second corner 30F is an area located between the first side surface 33 and the fourth side surface 36. The third corner 30G is a region located between the second side surface 34 and the third side surface 35. The fourth corner 30H is a region located between the second side surface 34 and the fourth side surface 36.

Mounting portions 40 are provided at the first corner 30E, the second corner 30F, the third corner 30G, and the fourth corner 30H of the back surface 32, respectively. By inserting the lock member 50 into each mounting portion 40, the pedestal 23 of each caster 20 is fixed to the loading platform 30. The casters 20 include flexible casters 20A and fixed casters 20B. The universal casters 20A are attached to the first corner 30E and the second corner 30F of the back surface 32. The fixed casters 20B are attached to the third corner 30G and the fourth corner 30H of the back surface 32. The number of casters 20 provided on the transport trolley 10, the mounting positions of the casters 20, and the like can be arbitrarily changed.

FIG. 2 is a side view of the universal caster 20A. The free caster 20A includes wheels 21, arms 22, and a pedestal 23. The pedestal 23 includes a first pedestal 24 having a thickness T1 and a second pedestal 25. The arm 22 rotatably supports the wheel 21. The wheels 21 are rotatable about the rotation center shaft 21A and movably support the loading platform 30. The pedestal 23 has a substantially rectangular shape and supports the arm 22. The second pedestal 25 is provided between the first pedestal 24 and the arm 22. For example, a ball bearing is built in between the second pedestal 25 and the arm 22 of the universal caster 20A. Therefore, the second pedestal 25 can rotatably support the arm 22. The traveling direction of the transport trolley 10 is changed by rotating the arm 22 of the free caster 20A around an axis along the normal line of the back surface 32. Further, the fixed caster 20B does not form the second pedestal 25.

The first pedestal 24 includes a first end 24A and a second end 24B. The second end 24B is provided on the opposite side of the first end 24A. The second pedestal 25 includes a pedestal surface 26. Wheels 21 of casters 20 are attached to the pedestal surface 26. The first pedestal 24 includes a pedestal back surface 27. The pedestal back surface 27 is provided on the opposite side of the pedestal surface 26.

FIG. 3 shows the first corner 30E of the back surface 32 before the casters 20 and the lock member 50 are attached. Ribs 32A are provided on the back surface 32 to improve the strength of the back surface 32. The direction in which the rib 32A extends is, for example, the front-rear direction, the width direction, or the oblique direction of the loading platform 30. In another example, the back surface 32 is not provided with the rib 32A.

Ribs 30I (see FIG. 1) are provided on the third side surface 35 to improve the strength of the third side surface 35. The location where the rib 30I is provided can be changed arbitrarily. In the first example, ribs 30I are provided on at least one of each side surface 33-36. In the second example, the ribs 30I are not provided on the side surfaces 33 to 36.

The mounting portion 40 includes an arranging portion 46. The arranging portion 46 is provided on a part of the back surface 32, and the first pedestal 24 can be arranged. The arrangement portion 46 supports the back surface 27 of the pedestal. In the example shown in FIG. 4, the arrangement portion 46 is a virtual region formed by the rib 32A.

The mounting portion 40 includes a first wall 41, a second wall 42, and a third wall 43. The first wall 41 and the second wall 42 face each other via the space 48 of the mounting portion 40. The third wall 43 connects one end 41A of the first wall 41 and one end 42A of the second wall 42.

The mounting portion 40 includes a first regulating portion 45 and an inserting portion 47. The first regulation unit 45 is provided on the third wall 43. The first regulating portion 45 comes into contact with the first end portion 24A of the first pedestal 24 so that the pedestal 23 arranged in the arranging portion 46 does not move in the direction away from the loading platform 30.

The insertion portion 47 is a part of the attachment portion 40 into which the lock member 50 can be inserted along the second end portion 24B of the first pedestal 24 with the casters 20 arranged on the arrangement portion 46. The insertion portion 47 is provided along the width direction of the loading platform 30 on the side opposite to the third wall 43 side with respect to the space 48 of the mounting portion 40. Since the moving direction of the transport trolley 10 and the insertion direction of the lock member 50 are different, the lock member 50 is difficult to come off from the insertion portion 47.

The insertion portion 47 includes an insertion port 47D. The insertion port 47D is a portion opened on the side surfaces 33 to 36 of the loading platform 30 so that the lock member 50 can be inserted. Since the insertion port 47D opens to the side surfaces 33 to 36 of the loading platform 30, the lock member 50 can be easily inserted into the insertion port 47D.

The mounting portion 40 includes a fourth wall 44 and a mounting engaging portion 49. The fourth wall 44 connects the other end 42B of the second wall 42 with the insertion slot 47D. The third wall 43 and the fourth wall 44 face each other through the space 48 of the mounting portion 40. The fourth wall 44 supports the lock member 50 from the side opposite to the third wall 43 side with respect to the lock member 50 inserted into the insertion portion 47.

The mounting engaging portion 49 includes a first mounting engaging portion 49A, a second mounting engaging portion 49B, and a third mounting engaging portion 49C. The first mounting engagement portion 49A is a groove formed in the mounting portion 40. The second mounting engagement portion 49B is a hole penetrating the second wall 42 or a recess provided in the second wall 42. The third mounting engagement portion 49C is a hole penetrating the second wall 42 or a recess provided in the second wall 42.

The loading platform 30 is formed by injecting resin between the upper mold and the lower mold (both not shown) of the mold. The portion of the upper mold of the mold that forms the mounting portion 40 can be moved along the front-rear direction of the loading platform 30. The resin is injected, and the upper mold forming the mounting portion 40 is moved from the first regulating portion 45 side toward the center side of the arranging portion 46 along the front-rear direction of the loading platform 30, and the mold is pulled out up and down.

As shown in FIG. 4, the insertion portion 47 includes a first insertion portion 47A, a second insertion portion 47B having a thickness T2, and a third insertion portion 47C. The first insertion portion 47A is provided on the side opposite to the third wall 43 side with respect to the space 48 of the mounting portion 40. The third insertion portion 47C is provided on the side opposite to the pedestal 23 side with respect to the arrangement portion 46. The second insertion portion 47B connects the first insertion portion 47A and the third insertion portion 47C.

The distance D between the third insertion portion 47C and the arrangement portion 46 is the same as the difference between the thickness T2 of the second insertion portion 47B and the thickness T1 of the first pedestal 24 (see FIG. 2). In another example, the distance D between the third insertion portion 47C and the arrangement portion 46 is shorter than the difference between the thickness T2 of the second insertion portion 47B and the thickness T1 of the first pedestal 24.

As shown in FIG. 5, the lock member 50 includes a first portion 51, a second portion 52, a third portion 53, and a second regulating portion 54. The first portion 51 is inserted into the first insertion portion 47A. The third portion 53 is inserted into the third insertion portion 47C. The second portion 52 connects the first portion 51 and the third portion 53 and is inserted into the second insertion portion 47B. The second regulating portion 54 is provided in the first portion 51 and comes into contact with the second end portion 24B of the pedestal 23 so that the pedestal 23 arranged in the arranging portion 46 does not move in the direction away from the loading platform 30.

The lock member 50 includes a lock engaging portion 55. The lock engaging portion 55 includes a first lock engaging portion 55A, a second lock engaging portion 55B, and a third lock engaging portion 55C. An example of the first lock engaging portion 55A is a claw. The first lock engaging portion 55A can be engaged with the first mounting engaging portion 49A of the mounting portion 40. An example of the second lock engaging portion 55B is a protrusion. The second lock engaging portion 55B is provided at the tip of the first portion 51 and can be engaged with the second mounting engaging portion 49B of the mounting portion 40. An example of the third lock engaging portion 55C is a protrusion. The third lock engaging portion 55C is provided at the tip of the third portion 53 and can be engaged with the third mounting engaging portion 49C of the mounting portion 40.

The lock member 50 includes a plane P. The plane P is a virtual plane. The first portion 51, the second portion 52, the third portion 53, and the lock engaging portion 55 are each configured symmetrically with respect to the plane P. The second regulatory unit 54 includes a fourth portion 54A and a fifth portion 54B. The fourth portion 54A and the fifth portion 54B are symmetrical with respect to the plane P. When the locking member 50 is inserted into the first corner 30E and the fourth corner 30H, the fourth portion 54A comes into contact with the first pedestal 24. When the locking member 50 is inserted into the second corner 30F and the third corner 30G, the fifth portion 54B comes into contact with the first pedestal 24. Since the fourth portion 54A and the fifth portion 54B are symmetrical with respect to the plane P, the same lock member 50 can be inserted into each of the corners 30E to 30H.

The work of attaching the casters 20 will be described with reference to FIGS. 3, 6, and 7. First, the operator inserts the pedestal 23 into the space 48 from the vertical direction of the loading platform 30. Next, the operator moves the pedestal 23 along the front-rear direction of the loading platform 30 to bring the second pedestal 25 into contact with the first regulating portion 45. In another example, the operator brings the first pedestal 24 into contact with the third wall 43. In this way, the operator arranges the pedestal 23 on the arrangement portion 46.

FIG. 6 is a cross-sectional view of a state in which the pedestal 23 is arranged on the arrangement portion 46 of the first corner 30E. Since the first pedestal 24 is in contact with the first wall 41 and the second wall 42 (both see FIG. 3), the pedestal 23 is restricted from moving along the width direction of the loading platform 30.

Next, the operator inserts the lock member 50 into the insertion port 47D from the third side surface 35, which is the side surface of the loading platform 30. The operator moves the lock member 50 along the width direction of the loading platform 30 to bring it into contact with the second wall 42.

FIG. 7 is a cross-sectional view of a state in which the lock member 50 is inserted. The first portion 51 is inserted into the first insertion portion 47A (see FIG. 6). Therefore, the movement of the pedestal 23 in the front-rear direction of the loading platform 30 is restricted.

The second portion 52 is inserted into the second insertion portion 47B (see FIG. 6) and the third portion 53 is inserted into the third insertion portion 47C (see FIG. 6). The first regulating portion 45 provided on the third wall 43 contacts the first end portion 24A of the pedestal 23, and the second regulating portion 54 provided on the first portion 51 is the second of the pedestal 23. Contact the end 24B of. Therefore, the movement of the pedestal 23 in the vertical direction of the loading platform 30 is restricted.

Further, the first lock engaging portion 55A (see FIG. 5) of the lock member 50 engages with the first mounting engaging portion 49A (see FIG. 3) of the mounting portion 40. The claw of the first lock engaging portion 55A is caught by the first mounting engaging portion 49A, and the lock member 50 is less likely to come off from the mounting portion 40.

Further, the second lock engaging portion 55B (see FIG. 5) of the lock member 50 engages with the second mounting engaging portion 49B (see FIG. 3) of the mounting portion 40. The protrusion of the second lock engaging portion 55B is inserted into the hole of the second mounting engaging portion 49B, and the lock member 50 is more stably fixed.

When removing the lock member 50, the operator inserts a tool from the deck surface 31 into the first mounting engagement portion 49A (see FIG. 1), and the first lock engaging portion 55A of the mounting portion 40 The claw is pushed in with a tool to disengage the lock member 50 from the first lock engaging portion 55A. An example of a tool is a flat-blade screwdriver. In another example, the operator inserts the first mounting engagement portion 49A with a finger without using a tool, and pushes the claw of the first lock engaging portion 55A of the mounting portion 40 with the finger to lock. The member 50 is disengaged from the first lock engaging portion 55A.

Also for the mounting portion 40 of the second corner 30F (see FIG. 1), the mounting portion 40 of the third corner 30G (see FIG. 1), and the mounting portion 40 of the fourth corner 30H (see FIG. 1). , The same work is performed, and the caster 20 is attached to the back surface 32 of the loading platform 30.

(Modification example)
The description of the above embodiment is an example of a form that can be taken by a transport trolley according to the present invention, and is not intended to limit the form. The transport trolley according to the present invention may take, for example, a modification of the above embodiment shown below and a combination of at least two modifications that do not contradict each other.

The configurations of the mounting engaging portion 49 and the lock engaging portion 55 can be arbitrarily changed.
In the first example, the first mounting engagement portion 49A is a claw, and the first lock engaging portion 55A is a recess that can engage with the first mounting engaging portion 49A.

In the second example, the second mounting engagement portion 49B includes a protrusion that can engage the second lock engaging portion 55B. The second lock engaging portion 55B includes a recess provided in the lock member 50 or a hole penetrating the lock member 50. The third mounting engagement portion 49C includes a protrusion capable of engaging with the third lock engaging portion 55C. The third lock engaging portion 55C includes a recess provided in the lock member 50 or a hole penetrating the lock member 50.

In the third example, the lock engaging portion 55 does not include a second lock engaging portion 55B. The second mounting engagement portion 49B is a protrusion protruding from the second wall 42 toward the space 48. The second mounting engagement portion 49B can engage with the tip of the first portion 51. The lock engaging portion 55 does not include a third lock engaging portion 55C. The third mounting engagement portion 49C is a protrusion protruding from the second wall 42 toward the space 48. The third mounting engagement portion 49C is engageable with the tip of the third portion 53.

In the fourth example, the transport trolley 10 is a set of a first mounting engagement portion 49A and a first lock engaging portion 55A, a set of a second mounting engaging portion 49B and a second lock engaging portion 55B. , Or at least one set of a third mounting engagement 49C and a third lock engagement 55C.

In the fifth example, the transport trolley 10 is a set of a first mounting engagement portion 49A and a first lock engaging portion 55A, a set of a second mounting engaging portion 49B and a second lock engaging portion 55B. Or, neither of the set of the third mounting engaging portion 49C and the third lock engaging portion 55C is included.

-The configuration of the insertion portion 47 can be arbitrarily changed. In the first example, the insertion portion 47 is provided along the front-rear direction of the loading platform 30.
The configuration of the insertion slot 47D can be arbitrarily changed. In the first example, the insertion port 47D opens toward the center side in the front-rear direction or the width direction of the loading platform 30.

-The configuration of the fourth wall 44 can be arbitrarily changed. In the first example, the mounting portion 40 does not include a fourth wall 44. The second insertion portion 47B and the second portion 52 regulate the first portion 51 from moving the pedestal 23 along the front-rear direction of the loading platform.

The configuration of the lock member 50 can be arbitrarily changed. In the first example, the first portion 51 does not extend toward the fourth wall 44 side, but extends toward the third wall 43 side. In the second example, the third portion 53 does not extend toward the fourth wall 44 side, but extends toward the third wall 43 side. In the third example, the third portion 53 does not extend toward the third wall 43 side, but extends toward the fourth wall 44 side.

-The configuration of the loading platform 30 can be arbitrarily changed. In the first example, the corner member 37 and the connecting member 38 are formed separately. In the second example, the corner member 37 and the connecting member 38 are integrally formed. In the third example, the loading platform 30 has a plate shape.

10 ... transport trolley, 20 ... casters, 21 ... wheels, 23 ... pedestal, 24A ... first end, 24B ... second end, 26 ... pedestal surface, 27 ... pedestal back, 30 ... loading platform, 40 ... mounting Part, 41 ... 1st wall, 41A ... end, 42 ... second wall, 42A ... end, 43 ... 3rd wall, 44 ... 4th wall, 45 ... 1st regulatory part, 46 ... Arrangement part, 47 ... Insertion part, 47A ... First insertion part, 47B ... Second insertion part, 47C ... Third insertion part, 47D ... Insertion port, 48 ... Space, 50 ... Lock member, 51 ... First Part, 52 ... 2nd part, 53 ... 3rd part, 54 ... 2nd regulatory part.

Claims (3)

A loading platform with a mounting part to which the caster pedestal can be mounted,
A lock member for fixing the casters to the loading platform is provided.
The mounting portion is a first restriction in which the mounting portion is in contact with an arrangement portion on which the pedestal can be arranged and a first end portion of the pedestal so that the pedestal arranged in the arrangement portion does not move in a direction away from the loading platform. A portion, an insertion portion into which the lock member can be inserted along a second end opposite to the first end of the pedestal, a first wall facing the mounting portion through a space, and A second wall and a third wall connecting one end of the first wall and one end of the second wall are provided.
The first regulatory section is provided on the third wall.
The lock member includes a second regulating portion that contacts the second end of the pedestal so that the pedestal arranged in the arrangement portion does not move away from the loading platform .
The insertion portion is provided on the side opposite to the third wall side with respect to the space of the arrangement portion.
The pedestal includes a pedestal surface to which the wheels of the casters are attached and a back surface of the pedestal opposite to the pedestal surface.
The arrangement portion supports the back surface of the pedestal and
The insertion portion is provided on a side opposite to the pedestal side with respect to the arrangement portion and a first insertion portion provided on the side opposite to the third wall side with respect to the space of the mounting portion. It is provided with a third insertion portion and a second insertion portion that connects the first insertion portion and the third insertion portion.
The lock member includes a first portion inserted into the first insertion portion, a third portion inserted into the third insertion portion, and the first portion and the third portion. connecting the second of the second portion and the transport carriage Ru with a to be inserted into the insertion portion. The transport trolley according to claim 1 , wherein the mounting portion further includes a fourth wall that supports the lock member from a side opposite to the third wall side with respect to the lock member. The carrier according to claim 1 or 2 , wherein the insertion portion is provided along the width direction of the loading platform and includes an insertion port opened on the side surface of the loading platform so that the lock member can be inserted.

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