JP2017196926A - Caster with brake and braking member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a caster with a brake which enables reduction of manufacturing costs, and to provide a braking member for the caster with the brake.SOLUTION: A caster with a brake of the invention includes: a frame 1; a wheel 3; and a braking member 5. The wheel 3 is held on the frame 1 so as to rotate around a rotation axis X2. The braking member 5 is provided at the frame 1 so as to swing around a swing axis X3 parallel to the rotation axis X2 and may be displaced between a non-braking position and a braking position. The wheel 3 has a first side surface 15b and a second side surface 15c. The braking member 5 has: a base part 50; and first and second wall parts 51, 52 integrated with the base part 50. A distance between the first wall part 51 and the second wall part 52 is formed so that the first wall part 51 is spaced away from the first side surface 15b and the second wall part 52 is spaced away from the second side surface 15c in the non-braking position and the first wall part 51 and the first side surface 15b contact with each other and the second wall part 52 and the second side surface 15c contact with each other in the braking position.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a caster with a brake and a braking member.

  Patent Document 1 discloses a conventional caster with a brake. The caster with brake includes a frame, wheels, and a braking mechanism.

  The frame has a pair of wheel support legs facing each other along the rotation axis. The wheel is held between the wheel support legs and is rotatable around the rotation axis. The wheel has a first side surface located on one side of the rotation axis and a second side surface located on the other side of the rotation axis.

  The braking mechanism includes a fixed plate, a flexible plate, a brake wire, a first wall, and a second wall. The fixing plate is fixed to the frame by being screwed to each wheel support leg. The flexible plate is held by the fixed plate in a state parallel to the rotation axis. The flexible plate is formed in a rectangular plate shape extending from one side of the rotation axis toward the other side. The brake wire is fixed to the central portion of the flexible plate. The brake wire extends outside the caster with brake while passing through the inside of the frame. The first wall is fixed to one end of the flexible plate and extends toward the first side surface of the wheel. The second wall is fixed to the other end portion of the flexible plate and extends toward the second side surface of the wheel.

  This caster with brake is attached to the lower end of a leg portion such as a stretcher. When the user tries to brake the wheel of the caster with brake, the user pulls the brake wire of the braking mechanism. Thereby, a flexible plate deform | transforms into convex shape so that a center part may leave | separate from a wheel, with the state hold | maintained at the fixed plate. For this reason, since the edge part of the one side and the edge part of the other side of a flexible plate approach mutually, it displaces so that a 1st wall and a 2nd wall may mutually approach. As a result, the first wall contacts the first side surface of the wheel, and the second wall contacts the second side surface of the wheel. Thus, the wheels of the brake casters are braked.

  On the other hand, when the user intends to release braking of the wheel of the caster with brake, the user stops towing the brake wire. Thereby, the deformation of the flexible plate is eliminated, and the first wall and the second wall are displaced so as to be separated from each other. For this reason, the first wall does not contact the first side surface of the wheel, and the second wall does not contact the second side surface of the wheel. Thus, the wheels of the caster with brake are allowed to rotate.

JP 2010-23801 A

  However, in the conventional caster with brake, a braking mechanism for braking the wheel is complicated. For this reason, the caster with brake has a large number of parts and is difficult to manufacture, so that the manufacturing cost increases.

  The present invention has been made in view of the above-described conventional situation, and an object to be solved is to provide a caster with a brake capable of realizing a reduction in manufacturing cost and a braking member therefor.

The caster with brake according to the present invention includes a frame,
Wheels held rotatably on the frame around a rotation axis;
A non-braking position provided on the frame so as to be swingable about a swing axis parallel to the rotation axis and allowing the wheel to rotate apart from the wheel; A brake member displaceable to a braking position for approaching and braking the rotation of the wheel,
The wheel has a first side surface located on one side of the rotation axis and the swing axis, and a second side surface located on the other side of the rotation axis and the swing axis,
The braking member includes a base portion that is swingably connected to the frame, a base wall that is integral with the base portion, a first wall that is located on one side of the rotating shaft and the rocking shaft, and a base that is integral with the base portion. A second wall located on the other side of the rotational axis and the pivot axis,
The distance between the first wall and the second wall is such that, in the non-braking position, the first wall and the first side face are separated from each other, and the second wall and the second side face are separated from each other. Then, the first wall and the first side surface are in contact with each other, and the second wall and the second side surface are in contact with each other.

  In the caster with brake according to the present invention, the braking member is provided so as to be swingable on the frame around the swing axis parallel to the rotation axis. If the braking member is in the non-braking position, the first wall and the second wall are separated from the first side surface and the second side surface, respectively. Therefore, the braking member is separated from the wheel and allows the wheel to rotate. On the other hand, if the braking member is at a braking position closer to the wheel than the non-braking position, the first wall and the second wall abut against the first side surface and the second side surface, respectively. For this reason, a braking member brakes rotation of a wheel. Thus, in the caster with brake, the wheel can be braked by a simple braking member. For this reason, this caster with a brake has a small number of parts and is easy to manufacture.

  Therefore, according to the caster with a brake of the present invention, the manufacturing cost can be reduced.

  The frame may have a cylindrical portion that forms a swing axis and has a cylindrical surface with a center axis that is a rotation axis and a support axis that is orthogonal to the swing axis. Further, the base portion may have a pair of opposed portions that form a swing axis together with the cylindrical portion and sandwich the cylindrical portion on one side and the other side of the swing axis. And it is preferable that the concave part which aligns with a cylindrical surface in a non-braking position is formed in each opposing part.

  In this case, it is possible to easily provide the braking member on the frame by sandwiching the cylindrical portion between the opposing portions. And it becomes possible to position a braking member in a non-braking position by aligning the cylindrical surface of a cylinder part, and each concave groove. Further, when the braking member is in the braking position, each concave groove is not aligned with the cylindrical surface, and the frictional force between the cylindrical surface and each facing portion increases, so that the braking member is maintained at the braking position.

The braking member of the present invention includes a frame,
A braking member attached to a caster including a wheel rotatably supported around a rotation axis of the frame and constituting a caster with a brake;
The wheel has a first side surface located on one side of the rotation axis, and a second side surface located on the other side of the rotation axis,
The braking member is swingably provided on the frame around a swing axis parallel to the rotation axis, and is separated from the wheel to allow rotation of the wheel, and the non-brake position It is displaceable to a braking position that approaches the wheel rather than to brake the rotation of the wheel,
The braking member includes a base portion that is swingably connected to the frame, a base wall that is integral with the base portion, a first wall that is located on one side of the rotating shaft and the rocking shaft, and a base that is integral with the base portion. A second wall located on the other side of the rotational axis and the pivot axis,
The distance between the first wall and the second wall is such that, in the non-braking position, the first wall and the first side face are separated from each other, and the second wall and the second side face are separated from each other. Then, the first wall and the first side surface are in contact with each other, and the second wall and the second side surface are in contact with each other.

  By providing the braking member of the present invention on the frame, a caster with a brake can be easily configured. In particular, the braking member can be easily retrofitted to casters that do not have a braking function.

  Therefore, according to the braking member of the present invention, the manufacturing cost of the caster with brake can be reduced.

  According to the caster with a brake of the present invention, the manufacturing cost can be reduced. Moreover, according to the braking member of the present invention, the manufacturing cost of the caster with brake can be reduced.

FIG. 1 is a partial cross-sectional side view showing a state in which a braking member is in a non-braking position in a caster with a brake according to an embodiment. FIG. 2 is a front view showing a state where the braking member is in the non-braking position in the caster with brake according to the embodiment. FIG. 3 is a partial cross-sectional side view showing a state where the braking member is in the braking position in the caster with brake according to the embodiment. FIG. 4 is a top view showing a brake member, a cylindrical portion, and the like, according to the caster with brake of the embodiment. FIG. 5 is a cross-sectional view showing the AA cross section in FIG. FIG. 6 is a cross-sectional view taken along the line B-B in FIG. FIG. 7 is an enlarged cross-sectional view of a main part showing a state in which the cylindrical surface and the recessed groove are aligned with each other with respect to the caster with brake according to the embodiment. FIG. 8 is a main part enlarged top view showing a state in which the cylindrical surface and the concave groove are aligned with each other with respect to the caster with brake according to the embodiment. FIG. 9 is an enlarged cross-sectional view of a main part showing a state where the cylindrical surface and the recessed groove are not aligned, according to the caster with a brake according to the embodiment. FIG. 10 is an enlarged top view of a main part of the caster with brake according to the embodiment, showing a state where the cylindrical surface and the concave groove are not aligned. FIG. 11 is an enlarged cross-sectional view of a main part showing a state in which the rotation of the wheel is restricted by the braking member displaced to the braking position in the caster with brake according to the embodiment. FIG. 12 is an enlarged cross-sectional view of a main part illustrating a state in which the wheel is allowed to rotate by displacing the braking member to the non-braking position according to the caster with a brake according to the embodiment.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.

  As shown in FIGS. 1 to 3, the caster with brake according to the embodiment (hereinafter simply referred to as a caster) is attached to the lower end of the leg portion 100 a of the stretcher. The caster includes a frame 1, wheels 3, and a braking member 5. In this embodiment, the front-rear direction of the caster is defined with the right side of the paper surface of FIG. 1 being the front side of the caster and the left side of the paper surface being the rear side of the caster. 1 and 2 is defined as the upper side of the caster, and the lower side of the paper is defined as the lower side of the caster to define the vertical direction of the caster. Further, the right and left directions of the caster are defined with the right side of the paper surface of FIG. 2 being the right side of the caster and the left side of the paper surface being the left side of the caster. In FIG. 3 and subsequent figures, the front-rear direction, the up-down direction, and the left-right direction are displayed in correspondence with FIGS. The front-rear direction, the up-down direction, and the left-right direction are orthogonal to each other. In addition, the front-back direction in an Example is an example, The attitude | position of the caster of this invention is suitably changed according to the object employ | adopted. In FIG. 4 and subsequent figures, illustration of the leg portion 100a of the stretcher is omitted.

  The frame 1 includes a resin cylinder portion 7 and a pair of left and right wheel support legs 9 a and 9 b made of resin and integral with the cylinder portion 7. In FIG. 1 and FIG. 3, for ease of explanation, a part of the wheel support leg 9a is not shown by a broken line.

  The cylindrical portion 7 is formed in a cylindrical shape having a support axis X1 and is positioned above the frame 1 and extends in the vertical direction. A cylindrical surface 7 a is formed on the outer periphery of the cylindrical portion 7 with the support axis X1 as the center line. A resin holding member 11 that is cylindrical and extends in the vertical direction is fixed inside the cylinder portion 7. As shown in FIG. 4, a screw hole 13 that extends in the left-right direction from the cylindrical surface 7 a and penetrates the holding member 11 is formed in the cylindrical portion 7.

  As shown in FIG. 2, the wheel support leg 9 a is located on the left side of the frame 1. The wheel support leg 9 b is located on the right side of the frame 1. As shown in FIG. 1, each of the wheel support legs 9 a and 9 b is integral with the cylindrical portion 7 at the upper end, and extends downwardly so as to incline forward from the cylindrical portion 7. As shown in FIG. 2, a first through hole 91 extending in the left-right direction is formed at the lower end of the wheel support leg 9a. A second through hole 92 that is coaxial with the first through hole 91 and extends in the left-right direction is formed at the lower end of the wheel support leg 9b. The material and shape of the frame 1 can be changed as appropriate.

  As shown in FIGS. 1 and 3, the wheel 3 includes a resin wheel 17 and a synthetic rubber tire 15 attached to the outer periphery of the wheel 17. As shown in FIG. 2, the wheel 3 is set to a width L1.

  As shown in FIGS. 1 and 3, the wheel 17 is provided with a plurality of spokes 170 that extend radially from the center side toward the outer peripheral side. As shown in FIG. 2, on the center side of the wheel 17, a first support portion 17a that protrudes to the left side toward the wheel support leg 9a, and a second support portion 17b that protrudes to the right side toward the wheel support leg 9b, Is formed. The wheel 17 is formed with a third insertion hole 171 extending in the left-right direction and penetrating from the first support portion 17a to the second support portion 17b.

  As shown in FIG. 2, the tire 15 has an annular shape. The tire 15 has a rolling surface 15a, a first side surface 15b, and a second side surface 15c. The first side surface 15b is located on the left side of the tire 15, that is, on one side of a rotation axis X2 described later, and extends toward the center of the tire 15 while continuing to the rolling surface 15a. The second side surface 15c is located on the right side of the tire 15, that is, on the other side of the rotational axis X2, and extends toward the center of the tire 15 while continuing to the rolling surface 15a. The material and shape of the wheel 17 and the tire 15 can be changed as appropriate.

  The wheel 3 is disposed between the wheel support leg 9a and the wheel support leg 9b. In this state, the bolt 3 is inserted into the wheel 3 from the wheel support leg 9a side or the wheel support leg 9b side. A nut 21 is screwed onto the tip of the shaft portion of the bolt 19. Thus, the wheel 3 is held by the frame 1 and can rotate about the rotation axis X2 extending from one side to the other side in the left-right direction. One side of the rotation axis X2 is the left side of the rotation axis X2, and the other side of the rotation axis X2 is the right side of the rotation axis X2. The rotation axis X2 is orthogonal to the support axis X1.

  As shown in FIGS. 4 to 6, the braking member 5 is made of resin. The braking member 5 includes a base 50, a first wall 51, a second wall 52, a first facing portion 53, and a second facing portion 54. The 1st opposing part 53 and the 2nd opposing part 54 are equivalent to the opposing part in this invention. The material of the braking member 5 can be changed as appropriate.

  As shown in FIG. 4, the base 50 is formed in a substantially rectangular shape extending in the front-rear direction and the left-right direction. Further, as shown in FIG. 5, the base 50 includes an upper surface 50a and a lower surface 50b that extend horizontally in the front-rear direction, and a tread surface 50c that is continuous with the upper surface 50a and is inclined downward toward the front. Have. Further, a buffer member 23 made of synthetic rubber is attached to the front end of the lower surface 50b. The buffer member 23 is formed to have the same length as the width of the base portion 50 in the left-right direction.

  The first wall 51 is formed integrally with the lower surface 50 b of the base 50 and is located at the left end of the base 50. The second wall portion 52 is also formed integrally with the lower surface 50 b of the base portion 50 and is located at the right end of the base portion 50. The first wall 51 has a right side surface 51a and a left side surface 51b. The second wall portion 52 also has a left side surface 52a and a right side surface 52b.

  As shown in FIG. 5, the second wall portion 52 is formed in a substantially rectangular shape, and extends downward from the base portion 50 and extends from the rear side to the front side of the base portion 50. The second wall portion 52 gradually extends to the lower side as it extends from the rear side to the front side of the base portion 50. And the 2nd wall part 52 is extended horizontally in the front-back direction from the vicinity which reached the downward direction of the tread 50c of the base 50. As shown in FIG. The length of the second wall 52 in the front-rear direction is shorter than the length of the base 50 in the front-rear direction. The first wall portion 51 has the same shape as the second wall portion 52.

  As shown in FIG. 6, the left side surface 51 a of the first wall portion 51 extends vertically from the left end of the lower surface 50 b of the base portion 50. Similarly, the right side surface 52b of the second wall portion 52 extends vertically from the right end of the lower surface 50b in the vertical direction. On the other hand, the right side surface 51b of the first wall portion 51 extends in the vertical direction while inclining to the left side so as to gradually approach the left side surface 51a as the distance from the lower surface 50b increases. Further, the left side surface 52a of the second wall portion 52 extends in the vertical direction while being inclined to the right side so as to gradually approach the right side surface 52b as the distance from the lower surface 50b increases.

  Thus, in the first wall portion 51 and the second wall portion 52, the thickness in the left-right direction is t1 at the portion continuous with the lower surface 50b, whereas the thickness in the left-right direction is the portion farthest from the base portion 50. Is t2. That is, as the first wall portion 51 and the second wall portion 52 move away from the base portion 50, the thickness in the left-right direction gradually decreases from t1 to t2. For this reason, in the place farthest from the base 50, between the first wall 51 and the second wall 52, more specifically, the right side surface 51b of the first wall 51 and the left side of the second wall 52. A space L2 is provided between the surface 52a. And as it approaches the base part 50, the space between the right side surface 51b of the first wall part 51 and the left side surface 52a of the second wall part 52 is gradually narrowed. Here, the distance L2 is wider than the width L1 of the wheel 3 shown in FIG. On the other hand, the interval L3 shown in FIG. 6 is narrower than the width L1 of the wheel 3 shown in FIG.

  As shown in FIG. 4, the first facing portion 53 is formed integrally with the rear end of the base portion 50 and is located at the left end of the base portion 50. The second facing portion 54 is formed integrally with the rear end of the base portion 50 and is located at the left end of the base portion 50. The first facing portion 53 and the second facing portion 54 extend in parallel with the upper surface 50a of the base portion 50 from the base portion 50 toward the rear while facing each other. As a result, the braking member 5 has a housing portion 55 formed between the rear end of the base portion 50, the first facing portion 53, and the second facing portion 54.

  The first facing portion 53 is formed with a first through hole 53a extending in the left-right direction. The first facing portion 53 is formed with a semi-circular first groove 53b. On the other hand, the second opposing portion 54 is formed with a second through hole 54a that is coaxial with the first through hole 53a and extends in the left-right direction. The second facing portion 54 is formed with a semicircular second groove 54b. As shown in FIG. 5, the second concave groove 54b is formed to have a smaller diameter than the second through hole 54a. The second concave groove 54b extends in the vertical direction of the second facing portion 54 while the second through hole 54a and the second concave groove 54b are orthogonal to each other. The first concave groove 53b has the same configuration as the second concave groove 54b.

  In this caster, the braking member 5 is attached to the frame 1 as follows. First, as shown in FIG. 4, the cylindrical portion 7 is disposed in the accommodating portion 55 while the cylindrical portion 7 is sandwiched between the first opposing portion 53 and the second opposing portion 54. At this time, the first concave groove 53b and the second concave groove 54b are aligned with the outer peripheral surface 7a of the cylindrical portion 7 (see FIGS. 7 and 8). Thereby, the 1st through-hole 53a, the screw hole 13, and the 2nd through-hole 54a align in the left-right direction. In this state, the first mounting screw 25 is screwed into the first through hole 53 a and the screw hole 13 from the left side of the braking member 5. Similarly, the second mounting screw 27 is screwed into the second through hole 54 a and the screw hole 13 from the right side of the braking member 5. The lengths of the first and second mounting screws 25 and 27 are adjusted so that the tips of the first and second mounting screws 25 and 27 are not exposed on the inner peripheral surface of the holding member 11 when the first and second mounting screws 25 and 27 are attached to the braking member 5 and the cylindrical portion 7. Thus, the swing axis X3 extending in the left-right direction is formed. As shown in FIG. 2, the swing axis X3 is parallel to the rotation axis X2. Further, the swing axis X3 is orthogonal to the support axis X1. Thus, the braking member 5 is attached to the frame 1 and can swing around the swing axis X3 in the direction D1 shown in FIG. 1 and the direction D2 shown in FIG.

  As shown in FIGS. 1 to 3, in the caster configured as described above, the leg portion 100 a of the stretcher is inserted from above into the holding member 11 of the cylindrical portion 7 in a state parallel to the support axis X <b> 1. . A nut 29 is screwed into the frame 1 at the lower end of the leg 100a. Thus, the caster is attached to the stretcher, allowing the stretcher to move.

  In a state where the braking of the wheel 3 is released, as shown in FIG. 1, the user pushes the front end of the base 50 upward through the buffer member 23. Therefore, the braking member 5 swings in the direction D1 around the swing axis X3 and is displaced from the braking position to the non-braking position. For this reason, the braking member 5 is moving away from the wheel 3 as shown in FIG. For this reason, the distance L2 between the right side surface 51b and the left side surface 52a of the second wall 52 at the position farthest from the base 50 is wider than the width L1 of the wheel 3, and the right side surface 51b and the first side surface 15b Are separated from each other, and the left side surface 52a and the second side surface 15c are separated from each other. Thus, the braking member 5 allows the wheel 3 to rotate.

  In this state, as shown in FIG. 7, the first and second opposing portions 53 and 54 are in a horizontal state in the longitudinal direction of the caster, and the first and second concave grooves 53b and 54b extend vertically in the vertical direction. . For this reason, the first and second concave grooves 53b and 54b are parallel to the support axis X1. For this reason, as shown in FIG. 8, the first and second concave grooves 53 b and 54 b are aligned with the cylindrical surface 7 a of the cylindrical portion 7. For this reason, the braking member 5 is positioned at the non-braking position.

  On the other hand, when the user tries to brake the rotation of the wheel 3, the user steps on the tread surface 50c of the base 50 from above. As a result, as shown in FIG. 3, the braking member 5 swings in the direction D2 around the swing axis X3 and is displaced from the non-braking position to the braking position. At this time, as shown in FIG. 11, the right side surface 51 b of the first wall portion 51 and the first side surface 15 b of the tire 15 gradually approach in the left-right direction. Similarly, the left side surface 52a of the second wall 52 and the second side surface 15c of the tire 15 gradually approach in the left-right direction. For this reason, while the right side surface 51b and the 1st side surface 15b contact | abut, the left side surface 52a and the 2nd side surface 15c contact | abut. Thus, the braking member 5 regulates the rotation of the wheel 3 by the frictional force between the right side surface 51b and the first side surface 15b and the frictional force between the left side surface 52a and the second side surface 15c.

  In this state, as shown in FIG. 9, the first and second opposing portions 53 and 54 are inclined downward with respect to the longitudinal direction of the caster, and the first and second concave grooves 53b and 54b are formed in the support shaft X1. It will be in the state inclined with respect to it. For this reason, as shown in FIG. 10, the first and second concave grooves 53 b and 54 b are not aligned with the cylindrical surface 7 a of the cylindrical portion 7. For this reason, since the frictional force between the cylindrical surface 7a and the first and second opposing portions 53 and 54 increases, the braking member 5 is maintained at the braking position.

  Thus, in this caster, the wheel 3 can be braked by the simple braking member 5. For this reason, this caster has a small number of parts and is easy to manufacture.

  Therefore, according to this caster, the manufacturing cost can be reduced.

  Further, the braking member 5 is provided on the frame 1 so that a caster with a brake can be easily configured. In particular, the braking member 5 can be easily retrofitted to a caster that does not have a braking function.

  Therefore, according to this braking member 5, the manufacturing cost of a caster with a brake can be reduced.

  While the present invention has been described with reference to the embodiments, it is needless to say that the present invention is not limited to the above-described embodiments and can be appropriately modified and applied without departing from the spirit thereof.

  For example, in the caster of the embodiment, when the braking member 5 is displaced to the non-braking position, the upper surface 50a and the lower surface 50b of the base 50 and the first and second opposing portions 53 and 54 are in a horizontal state in the front-rear direction of the caster. ing. However, the present invention is not limited to this, and when the braking member 5 is displaced to the non-braking position, the upper surface 50a, the lower surface 50b and the first and second opposing portions 53, 54 of the base portion 50 are inclined upward with respect to the longitudinal direction of the caster. It is good also as a state. In this case, the first and second concave grooves 53b and 54b are previously inclined at a constant angle with respect to the vertical direction of the first and second opposing portions 53 and 54 so as to be aligned with the cylindrical surface 7a at the non-braking position. Formed with.

  In addition, although the caster of an Example is employ | adopted as the stretcher, it is not restricted to this, You may employ | adopt as a wheelchair, various trolley | bogies, etc.

  The present invention can be used for various carts in addition to stretchers and wheelchairs.

DESCRIPTION OF SYMBOLS 1 ... Frame 3 ... Wheel 5 ... Braking member 7 ... Cylindrical part 7a ... Cylindrical surface 15b ... 1st side surface 15c ... 2nd side surface 50 ... Base part 51 ... 1st wall part 52 ... 2nd wall part 53 ... 1st opposing part ( Opposite part)
53b ... 1st ditch | groove (concave groove)
54. Second opposing part (opposing part)
54b ... second concave groove (concave groove)
X1 ... support axis X2 ... rotation axis X3 ... oscillation axis

Claims (4)

Frame,
Wheels held rotatably on the frame around a rotation axis;
A non-braking position provided on the frame so as to be swingable about a swing axis parallel to the rotation axis and allowing the wheel to rotate apart from the wheel; A brake member displaceable to a braking position for approaching and braking the rotation of the wheel,
The wheel has a first side surface located on one side of the rotation axis and the swing axis, and a second side surface located on the other side of the rotation axis and the swing axis,
The braking member includes a base portion that is swingably connected to the frame, a base wall that is integral with the base portion, a first wall that is located on one side of the rotating shaft and the rocking shaft, and a base that is integral with the base portion. A second wall located on the other side of the rotational axis and the pivot axis,
The distance between the first wall and the second wall is such that, in the non-braking position, the first wall and the first side face are separated from each other, and the second wall and the second side face are separated from each other. Then, the caster with a brake is characterized in that the first wall and the first side surface are in contact with each other, and the second wall and the second side surface are in contact with each other. The frame includes a cylindrical portion that forms the swing axis, and has a cylindrical surface that has a center line that is a support axis that is orthogonal to the rotation axis and the swing axis.
The base portion has a pair of opposing portions that form the swing axis together with the tube portion, and sandwich the tube portion on one side and the other side of the swing shaft center,
The caster with a brake according to claim 1, wherein a concave groove that is aligned with the cylindrical surface at the non-braking position is formed in each of the facing portions. Frame,
A braking member attached to a caster including a wheel rotatably supported around a rotation axis of the frame and constituting a caster with a brake;
The wheel has a first side surface located on one side of the rotation axis, and a second side surface located on the other side of the rotation axis,
The braking member is swingably provided on the frame around a swing axis parallel to the rotation axis, and is separated from the wheel to allow rotation of the wheel, and the non-brake position It is displaceable to a braking position that approaches the wheel rather than to brake the rotation of the wheel,
The braking member includes a base portion that is swingably connected to the frame, a base wall that is integral with the base portion, a first wall that is located on one side of the rotating shaft and the rocking shaft, and a base that is integral with the base portion. A second wall located on the other side of the rotational axis and the pivot axis,
The distance between the first wall and the second wall is such that, in the non-braking position, the first wall and the first side face are separated from each other, and the second wall and the second side face are separated from each other. Then, the brake member is formed so that the first wall and the first side surface are in contact with each other, and the second wall and the second side surface are in contact with each other. The frame includes a cylindrical portion that forms the swing axis, and has a cylindrical surface that has a center line that is a support axis that is orthogonal to the rotation axis and the swing axis.
The base portion has a pair of opposing portions that form the swing axis together with the tube portion, and sandwich the tube portion on one side and the other side of the swing shaft center,
The braking member according to claim 3, wherein each of the opposing portions is formed with a concave groove that aligns with the cylindrical surface at the non-braking position.

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