JP2016064028A - Brake device of caster - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brake device of a caster, which facilitates brake operation and release operation of the caster, and can reduce the size and weight of the caster.SOLUTION: A brake device of a caster comprises: a plurality of casters including brake casters that can be braked; a brake operation unit 5 which is manually operated to a brake operation position for braking the brake casters and a brake release operation position for releasing the braking, and moves brake wires in an axial direction according to the manual operation; a plurality of brake units 8a, 8b which are connected by outer tubes 7a, 7b covering the brake wires, brake the brake casters according to the movement of the brake wires in the axial direction, or release the braking; and first, second, and third brake wire adjustment devices 20, 21, 22 for adjusting the lengths of the brake wires by adjusting the lengths of the outer tubes 7a, 7b.SELECTED DRAWING: Figure 3

Description

  Embodiments described herein relate generally to a brake device that stops traveling of a caster.

  For a bag such as a suitcase in recent years, a carry back having a plurality of casters at the bottom is known. This type of suitcase is equipped with a brake device that can prevent unintentional movement due to factors such as rocking of the floor in a moving body such as an inclined ground or a train or a collision from an external force or that can stop traveling (See, for example, Patent Documents 1, 2, and 3).

Japanese Patent No. 4180642 Utility Model Registration No. 3122929 Utility Model Registration No. 3128217

  However, in such a conventional caster, a strong operation force is required to lock (brake) the wheel, so that the configuration of the brake operation unit and the brake drive mechanism is configured by a link mechanism or the like. As a result, there is a problem that the shape of parts is also complicated and large.

  For this reason, there is a problem that the cost is increased, the brake operation and the release operation are complicated and not easy to use, and the weight of the suitcase is increased.

  Furthermore, in the conventional example in which a foot type brake pedal is provided for each caster and the wheels of the caster are sequentially locked by stepping on these brake pedals, only by locking the wheel of one caster, There is a new problem that the suitcase does not stop, and that there is a possibility that the suitcase may rotate around a locked wheel by stepping off another stepping brake pedal.

  The problem to be solved by the embodiments of the present invention is to provide a brake device for casters that can be easily reduced in size and reduced in weight by simple brake operation and release operation of casters.

  The caster brake device according to the embodiment is manually operated to a plurality of casters including a brake caster configured to be capable of braking, a brake operation position for braking the brake caster, and a brake release operation position for releasing the brake. A brake operation unit that moves the brake wire in the axial direction according to a manual operation, and a plurality of brake wheels that are connected to the brake wire and brake the brake caster according to the movement of the brake wire in the axial direction or release the brake. A braking unit and a plurality of brake wire adjusting devices for adjusting the length of the brake wire are provided.

  According to the embodiment, since the braking operation force manually operated by the brake operation unit and the braking release operation force are transmitted to the braking unit via the brake wire, the manual operation force is transmitted from the link mechanism or the like. In addition, the configuration can be simplified and reduced in weight.

  In addition, since the brake operation unit, which is a main component other than the caster, and the brake unit are unitized, the workability when the brake device of the caster is attached to a bag or the like can be improved.

  In addition, since there are multiple brake wire adjustment devices, before the caster brake device is shipped from its manufacturing plant to the kite manufacturing plant, etc., and after shipping, when the caster brake device is attached to the kite at the kite manufacturing plant. The brake wire can be adjusted to the appropriate length. Thereby, the braking at the time of braking the caster can be appropriately adjusted by the braking unit.

The front view of the inner surface of a kite when the lid of the kite which attached the brake device of the caster concerning an embodiment was opened and it developed right and left. FIG. 3 is an external front view of the bag when the cover of the bag shown in FIG. 1 is opened and deployed left and right. The external appearance front view which shows the structure at the time of factory shipment of the brake device of the caster shown in FIG. FIG. 4 is an enlarged rear view of the operation unit shown in FIG. 3. FIG. 4 is an external front view mainly showing a pair of left and right second adjusting devices of the brake wire adjusting device shown in FIG. 3 and a pair of left and right braking casters to which a braking unit is attached. FIG. 6 is a schematic side view showing a configuration of a brake caster shown in FIG. 5 and the like. The perspective view which shows the structure of the principal part of the braking unit shown in FIG.1, FIG.5 etc. FIG. The longitudinal cross-sectional view of the 1st adjustment apparatus of the brake wire adjustment apparatus shown in FIG.3, FIG.4 etc. FIG. The longitudinal cross-sectional view of the 2nd adjustment apparatus of the brake wire adjustment apparatus shown in FIG.1 and FIG.3, FIG.5.

  Hereinafter, the present embodiment will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or an equivalent part in several drawing.

  FIG. 1 is a front view of an inner surface when a lid of a suitcase 2 equipped with a brake device 1 for a caster according to the present embodiment is opened and deployed left and right, and FIG. 2 is an external front view of the bag.

  As shown in FIGS. 1 and 2, a suitcase 2 that is an example of a bag is on one side (left side in FIG. 1) of a bottomed rectangular tube-shaped case body 2 a that is an example of a bag. One side part (right side part in FIG. 1) of the case lid 2b having substantially the same shape and the same size is provided so as to be opened and closed by a hinge or the like (not shown).

  The suitcase 2 is a normal caster that is not configured to be brakeable on the outer surfaces of the left and right corners in FIG. 1 at the bottom of the case body 2a, and is provided with free casters 3a and 3b that are examples of non-braking casters, respectively. ing.

  Further, the case lid 2b is provided with brakeable casters 4a and 4b on the outer surfaces of the left and right corners in FIG.

  As shown in FIG. 2, the case main body 2a is provided with an operation unit 5 of a caster brake device 1 at the upper part in the figure, and a knob 5a which is an operation portion of the operation unit 5 is provided on the outer surface of the case main body 2a. It is arranged.

  The knob 5a is configured to be manually pivotable between a braking operation position for braking the braking casters 4a and 4b and a braking releasing position for releasing the braking so that the vehicle can run. The position is away from the required rotation angle, for example 45 ° or 90 °.

  As shown in FIG. 1, the operation unit 5 has its back side open end, that is, the inner surface side open end of the case body 2a closed by the back cover 5b.

  As shown in FIG. 3, the operation unit 5 is closed by providing a unit cover 5d at the inner opening end of the unit case 5c inside the back cover 5b. FIG. 3 shows a state of the caster brake device 1 when the caster brake device 1 is shipped from a factory that manufactures the caster brake device 1 to a bag factory that assembles the caster brake device 1 to the suitcase 2. That is, in the manufacturing plant of the brake device 1 for casters, a pair of left and right outer tubes 7a and 7b are disposed between one operation unit 5 and a pair of left and right braking units 8a and 8b. Shipped to a bag factory where the brake device 1 is attached to a bag such as a suitcase 2. However, the pair of left and right outer tubes 7a, 7b can be inserted around the braking unit 8a, 8b without being fixed at the insertion end thereof, and can be rotated around the central axis. It is configured.

  FIG. 4 shows the back of the operation unit 5 after the back cover 5b and the unit cover 5d are removed, and a yoke 5e is accommodated in the unit case 5c so as to be movable up and down in the figure.

  The yoke 5e accommodates a cam 5h, which is fixed to the rotation operation shaft 5g of the knob 5a shown in FIG. A pair of left and right brake wires 6a and 6b in the figure connected to the lower end of the yoke 5e in the figure by a yoke 5e that moves up and down in the figure by the rotation of the cam 5h around the central axis of the rotation operation shaft 5g. It is configured to reciprocate in the middle and up and down directions.

  That is, each time the knob 5a of the operation unit 5 is manually operated to the braking operation position and the braking release operation position, the pair of left and right brake wires 6a and 6b move in the vertical direction in FIG. The manual operation force of the knob 5a can be transmitted.

  The pair of left and right brake wires 6a and 6b are formed of, for example, an elastic metal wire or the like, and the outer surfaces thereof can be moved in the axial direction by a pair of left and right outer tubes 7a and 7b made of elastic synthetic resin or the like. It is covered.

  As shown in FIGS. 1 to 3, the pair of left and right outer tubes 7a and 7b are disposed between the operation unit 5 and the pair of left and right braking units 8a and 8b, and are disposed inside the outer tubes 7a and 7b. Has inserted a pair of left and right brake wires 6a, 6b movably in the axial direction. The pair of left and right brake wires 6a and 6b connect the operation unit 5 and the pair of left and right braking units 8a and 8b.

  As shown in FIG. 3, the pair of left and right braking units 8a and 8b are disposed at the left and right end portions inside the bottom of the case lid 2b, so the pair of left and right brake wires 6a and 6b and the outer tubes 7a and 7b are Attached along the inner surfaces of the case main body 2a and the case lid 2b, and wired so as to straddle the case main body 2a and the case lid 2b.

  As shown in FIGS. 1 and 5, the pair of left and right braking units 8a and 8b are respectively mounted on a pair of brake casters 4a and 4b that can be braked, and are used to move the pair of left and right brake wires 6a and 6b in the axial direction. Accordingly, the brake casters 4a and 4b are braked by moving the brake pins 9 of the pair of left and right brake casters 4a and 4b in the vertical direction in the figure.

  As shown in FIG. 6, each of the braking casters 4a and 4b includes a base portion 10 and a wheel 11 that are fixed to the left and right corners of the case lid 2b by screws or the like. A pivot shaft 12 is provided.

  The swivel shaft 12 has a straight rod-like brake pin 9 inserted in the hollow portion so as to be movable in the axial direction (movable up and down).

  The brake pin 9 is arranged so that the lower end portion in the drawing faces the tread surface (tread surface) of the tire 11a of the wheel 11 with a predetermined gap, and the lower end portion of the brake pin 9 faces the tread surface (tread surface) of the tire 11a. When pressed with a predetermined pressure, the wheel 11 is locked and a brake is applied.

  In FIG. 6, reference numeral 13 denotes a bearing that rotates the base portion 10 around the turning shaft 12, and 14 denotes a pair of left and right forks that rotatably support both ends of the axle 11 b of the wheel 11. The axle 11b is in an eccentric position with respect to the turning shaft 12.

  FIG. 7 schematically shows the configuration of the braking units 8a and 8b mounted on the braking casters 4a and 4b. The braking units 8a and 8b are provided in a unit case (not shown) in a torsion spring 15 and a brake pin 9. Of the upper part of the house.

  The brake pin 9 has its lower end inserted through a through hole (not shown) of the bottom plate 16 of the unit case and has a predetermined gap on the tread surface of the tire 11a of the wheel 11 of the brake casters 4a and 4b as described above. Is placed facing each other.

  The brake pin 9 is provided with a pressing spring 17 of a tapered truncated cone-shaped coil spring at the upper part in the figure on the outer periphery between a pair of left and right locking shafts 9a, 9b protruding from the upper end of the brake pin 9 and the bottom plate 16 of the unit case. It fits with some play. Thus, the push spring 17 constantly biases the brake pin 9 upward so as to always bias the wheel 11 in the unlocking direction, and the lower end portion of the brake pin 9 is pressed against the tire 11 a of the wheel 11. Thus, relaxation adjustment is performed so that the pressing force when locking the wheel 11 does not become excessive.

  The torsion spring 15 is a coil portion 15a wound in a coil shape, and the coil portion 15a integrally protrudes from both axial ends of the coil portion 15a (one end on the front surface side and the other end on the back surface in FIG. 7) to the right side in the drawing. The vertical U-shaped pin-side locking ends 15b and 15c locked to the pair of left and right locking shafts 9a and 9b of the pin 9 and the lower ends of the brake wires 6a and 6b are inserted downward in the figure. The planar U-shaped wire-side locking end 15d that locks the small ball 18 connected to the insertion tip is integrally formed. That is, the small balls 18 connected to the lower ends of the brake wires 6a and 6b are locked by the wire side locking end 15d of the torsion spring 15, so that the braking units 8a and 8b having the torsion spring 15 are 6a and 6b are connected to the yoke 5e of the operation unit 5.

  Further, the torsion spring 15 has a support shaft 19 horizontally inserted between a pair of opposing walls of a unit case (not shown) inserted in the coil portion 15a, and a lever (leverage lever) having the support shaft 19 as a fulcrum. ).

  For this reason, when the operation unit 5 is braked and the brake wires 6a and 6b are pulled upward in the drawing, the wire side locking end 15d of the torsion spring 15 locked to the small ball 18 is shown in the drawing. Pulled down.

  As a result, the torsion spring 15 acts as a lever (lever) having the support shaft 19 as a fulcrum, so that the brake pin 9 resists the spring force of the push spring 17 by the pin side locking ends 15b and 15c of the torsion spring 15. Then it is pushed down in the figure.

  For this reason, the lower end portion of the brake pin 9 is pressed against the tire 11a of the wheel 11 of the braking casters 4a and 4b with a predetermined pressure, the wheel 11 is locked, and the brake is applied.

  Therefore, when the facing gap g between the lower end portion of the brake pin 9 and the tire 11a of the wheel 11 is too shorter than an appropriate predetermined interval, the lower end portion of the brake pin 9 is pressed against the tire 11a of the wheel 11. There is a possibility that the pressing force becomes excessive and the wheel 11 stops suddenly or the brake pin 9 breaks.

  On the other hand, when the facing gap g between the lower end portion of the brake pin 9 and the tire 11a of the wheel 11 is too long, the lower end portion of the brake pin 9 may not reach the tire 11a of the wheel 11 and the brake may not work. is there.

  For this purpose, it is necessary to adjust the lengths of the pair of left and right brake wires 6a and 6b so that the facing gap g between the lower end portion of the brake pin 9 and the tire 11a of the wheel 11 can be maintained at an appropriate predetermined interval. The pair of left and right braking units 8a and 8b has an insertion portion for inserting the distal end portions (lower end portions in FIG. 7) of the pair of left and right outer tubes 7a and 7b shown in FIG. The unit case is omitted.

  By the way, in a factory that manufactures a brake device 1 for casters, as shown in FIG. 3, a brake wire 6a in which an operation unit 5 and a pair of left and right braking units 8a and 8b are covered with a pair of left and right outer tubes 7a and 7b. , 6b, and connected to the bag factory where the caster brake device 1 is attached to the bag of the suitcase 2 and the like.

  For this reason, when the caster brake device 1 is shipped from the factory, the pair of left and right outer tubes 7a and 7b and the brake wire are arranged so that the opposing gap g between the lower end of the brake pin 9 and the tire 11a can maintain an appropriate distance. The lengths 6a and 6b are adjusted in advance.

  However, since there are slight variations in the dimensions of the brake device 1 itself of the casters and slight variations in the mounting positions of the brake casters 4a and 4b on the suitcase 2, the length of the brake wires 6a and 6b is also on the side of the factory. Need to be tweaked.

  In addition, when the suitcase 2 is large, the lengths of the brake wires 6a and 6b are also increased, so that the length to be adjusted is increased accordingly.

  Also, as shown in FIG. 3, when the brake device 1 of the caster is shipped from the factory, the brake wires 6a and 6b are already covered with the outer tubes 7a and 7b, so that only the brake wires 6a and 6b are in this state. The length cannot be adjusted.

  Therefore, in the brake device 1 of the caster, the first brake wire adjusting device 20 as the first adjusting device is disposed in the vicinity of the operation unit 5, and the first brake wire adjusting device 20 in the vicinity of the pair of left and right braking units 8a and 8b. Second and third brake wire adjusting devices 21 and 22 which are two adjusting devices are provided.

  These first, second and third brake wire adjusting devices 20 to 22 adjust the lengths of the outer tubes 7a and 7b at the time of factory shipment of the caster brake device 1 shown in FIG. Thus, the lengths of the brake wires 6a and 6b are relatively adjusted.

  As shown in FIGS. 4 and 8, the first brake wire adjustment device 20 includes a pair of left and right first adjustment screws 23a and 23b, a pair of left and right first lock nuts 24a and 24b, and a pair of left and right first lock screws. 2 lock nuts 25a and 25b.

  The pair of left and right outer tubes 7a and 7b are respectively divided in the radial direction in the vicinity of the pair of left and right insertion holes 5j and 5k formed in the lower wall (fixed wall) 5i of the unit case 5c of the operation unit 5. A pair of split ends 7c, 7d, 7e, 7f are formed.

  Then, the pair of left and right divided ends, that is, 7c and 7e, 7d and 7f are coaxially connected to both ends of the cylindrical first adjusting screws 23a and 23b in the axial direction by caulking, adhesive, or the like. It is stuck.

  Each of the first adjusting screws 23a and 23b has a central hole 23a1 and 23b1 formed coaxially in the axial center thereof, and the brake wires 6a and 6b are respectively inserted in the central holes 231 and 23b1 in the axial direction. ing.

  Further, the first adjusting screws 23a and 23b are formed with screw portions 23a2 and 23b2 having a required structure over substantially the entire length of the outer peripheral surface thereof. A pair of left and right first lock nuts 24a and 24b and a pair of left and right second lock nuts 25a and 25b are screwed to these screw portions 23a2 and 23b2, respectively, on both sides of the lower wall 5i of the main body case 5c. Fastened and fixed to the lower wall 5i.

  That is, the pair of left and right first adjustment screws 23a and 23b are inserted into the pair of left and right insertion holes 5j and 5k of the lower wall 5i, respectively. The insertion positions of the pair of left and right outer tubes 7a and 7b can be fixed by tightening the second lock nuts 24a, 25a, 24b and 25b to the first adjustment screws 23a and 23b, respectively.

  Accordingly, the first and second lock nuts 24a, 25a, 24b, and 25b are fastened with the insertion positions of the pair of left and right outer tubes 7a and 7b that are inserted through the lower wall 5i closer to the operation unit 5 side. , 7b can be shortened, and accordingly, the lengths of the pair of left and right brake wires 6a, 6b inserted through the outer tubes 7a, 7b can be adjusted to be relatively long.

  On the contrary, by adjusting the insertion position of the pair of left and right outer tubes 7a and 7b in a direction away from the operation unit 5, the length of the pair of left and right outer tubes 7a and 7b is increased, and the brake wire 6a and Each of the lengths 6b can be adjusted to be relatively short.

  The pair of left and right second and third brake wire adjusting devices 21 and 22 which are the second adjusting devices shown in FIGS. 3 and 5 and the like have the same configuration as shown in FIG. A pair of fourth and fifth adjustment screws 26 and 27, an adjustment nut 28 and a third lock nut 29 are provided.

  The pair of left and right outer tubes 7a, 7b are divided in the radial direction in the vicinity of the braking units 8a, 8b, respectively, and in the drawing of the cylindrical fourth adjusting screw 26 at the left divided end 7g in FIG. The left end is fixed coaxially by caulking or adhesive.

  Further, the right end portion 7h of the cylindrical fifth adjusting screw 27 is fixed to the right end portion 7h of the outer tube 7a, 7b in a coaxial manner by caulking, an adhesive, or the like. Yes.

  The fourth and fifth adjustment screws 26 and 27 have center holes 26a and 27a formed coaxially in the axial center thereof, and the brake wires 6a and 6b are inserted into the center holes 26a and 27a in the axial direction. ing.

  The fourth and fifth adjusting screws 26 and 27 are formed with screw portions 26b and 27b having a required structure on substantially the entire length of the outer peripheral surface, respectively. An adjusting nut 28 is screwed to the outer periphery of these screw portions 26b and 27b.

  The adjustment nut 28 has an axial length sufficiently longer than that of the third lock nut 29, and can sufficiently adjust the length of the outer tubes 7a and 7b, that is, the length of the brake wires 6a and 6b. Have

  The third lock nut 29 is screwed to a required position on the fourth adjustment screw 26 at one end side in the axial direction of the adjustment nut 28 (left end in FIG. 9) and fixed by a nylock or the like, and fixed to the required position. Is done.

  For this reason, the fourth adjustment screw 26 is configured as a fixed screw that does not move in the axial direction even when the adjustment nut 28 rotates. On the other hand, the fifth adjustment screw 27 is screwed to the right end portion in FIG. 9 of the screw portion 28 a of the adjustment nut 28 and fixed by Nylock or the like. It is composed of a movable screw that moves in the direction.

  For this purpose, the third lock nut 29 is fixedly held, the adjustment nut 28 is rotated, and the fourth adjustment screw 26 is moved (reciprocated) in the axial direction, whereby the fourth and fifth The opposing gap ga between the adjusting screws 26 and 27 is adjusted. Thereby, the length of the pair of left and right outer tubes 7a and 7b can be adjusted as appropriate. That is, the length of the pair of outer tubes 7a and 7b can be increased or decreased according to the rotation direction of the adjusting nut 28. The pair of left and right outer tubes 7a and 7b fixed to the fifth adjusting screw 27 can rotate the distal end portions of the respective braking units 8a and 8b around the axis in the braking units 8a and 8b. Since it is inserted, its length can be adjusted while rotating.

  Next, an example of a method for adjusting the lengths of the pair of left and right brake wires 6a and 6b using the first, second and third brake wire adjusting devices 20, 21, and 22 will be described.

  First, after assembling the caster brake device 1 as shown in FIG. 3 on the factory side of the caster brake device 1 as shown in FIG. 1 is adjusted so that the pair of left and right outer tubes 7a and 7b are closest to the operation unit 5 side.

  Thereby, the brake wires 6a and 6b in the pair of left and right outer tubes 7a and 7b are adjusted relatively long. For this reason, as shown in FIG. 7, in the braking units 8a and 8b, the locking position between the small ball 18 connected to the tip of the brake wires 6a and 6b and the wire side locking end 15d of the torsion spring 15 is slightly lowered. To do.

  After that, the brake device 1 of this caster is shipped to the bag manufacturing factory. In this bag manufacturing plant, after the brake device 1 of this caster is attached to the suitcase 2 as shown in FIG. 1, the second and second adjustments are mainly performed contrary to the adjustment of the first brake wire adjusting device 20. 3 is adjusted in the direction in which the length of the pair of left and right outer tubes 7a, 7b is increased. At that time, the adjustment operator repeatedly performs the braking operation and the brake releasing operation of the operation unit 5 while visually checking the gap between the tread surface of the tire 11a of the wheel 11 of the braking casters 4a and 4b and the lower end portion of the brake pin 9. A flat measuring jig having a predetermined thickness (not shown) is inserted into the gap between the tire 11a and the lower end of the brake pin 9, and the second and second ends are brought into contact with the lower end of the brake pin 9. 3 brake wire adjusting devices 22 and 23 are adjusted.

  When the measurement jig cannot be inserted into the gap between the lower end portion of the brake pin 9 and the tire 11a, the gap is too narrow and the pressure with which the brake pin 9 is pressed against the tire 11a becomes excessive, causing a sudden stop. There is a risk of doing.

  On the other hand, if the gap between the lower end of the brake pin 9 and the tire 11a is too wide, the braking casters 4a and 4b may not be braked.

  Therefore, according to the brake device 1 of this caster, the brake wires 6a and 6b can be adjusted to an appropriate length without being disassembled even after being assembled.

  Moreover, since the first to third brake wire adjusting devices 20 to 22 are provided in the vicinity of the operation unit 5 and in the vicinity of the pair of left and right braking units 8a and 8b, respectively, The lengths of the brake wires 6a and 6b can be adjusted to appropriate lengths at the bag manufacturing plant side where the caster brake device 1 is attached to the suitcase 2 to manufacture the suitcase 2.

  Moreover, even if the length of the brake wires 6a and 6b is increased due to an increase in the size of the suitcase 2, etc., there are a plurality of brake wire adjusting devices 20 to 22 that adjust the lengths. The length can be easily adjusted.

  Since the suitcase 2 is provided with two pairs of brake casters 4a and 4b on one side of the suitcase 2, for example, on the case lid 2b, the pair of free casters 3a and 3b is provided on the case body 2a. 1. Even when the brake casters 4a and 4b are locked and the lock release operation is forgotten, the suitcase 2 is tilted toward the case body 2a, and the brake casters 4a and 4b are floated in the air so as to run by so-called two-wheel pulling. be able to.

  In the above embodiment, the case where the operation unit 5 is provided on the case body 2a of the suitcase 2 and the braking units 8a and 8b are provided on the case lid 2b has been described. However, the present invention is not limited to this. On the contrary, for example, the operation unit 5 may be provided on the case lid 2b, and the braking units 8a and 8b may be provided on the case body 2a.

  Further, the operation unit 5 may be provided on the upper end or upper side surface of the case main body 2a or the case lid 2b, or on the outer surface of the case lid 2b.

  Further, the operation unit 5 has been described with respect to a configuration in which a brake operation or a brake release operation is performed by rotating the knob 5a. However, a brake operation or a brake release is performed by moving the knob vertically or laterally. You may comprise so that it may operate.

  As mentioned above, although several embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of this invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the present invention. These embodiments and modifications thereof are included in the scope and gist of the present invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Caster brake device, 2 ... Suitcase, 2a ... Case main body, 2b ... Case cover body, 3a, 3b ... Free caster (non-braking caster), 4a, 4b ... Braking caster, 5 ... Operation unit, 5j, 5k ... a pair of left and right insertion holes, 6a, 6b ... a pair of left and right brake wires, 7a, 7b ... a pair of left and right outer tubes, 7c, 7d, 7e, 7f, 7g, 7h ... a split end, 8a, 8b ... a pair of left and right Brake unit, 9 ... brake pin, 11 ... wheel, 20 ... first brake wire adjusting device, 21 ... second brake wire adjusting device, 22 ... third brake wire adjusting device, 23a, 23b ... 1st adjustment screw, 23a1, 23b1 ... center hole, 23a2, 23b2 ... screw part, 24a, 24b ... a pair of left and right first lock nuts, 25a 25b ... right pair of second lock nut, 26, 27 ... fourth, fifth adjustment screws, 26a, 27a ... screw part, 28 ... adjustment nut 29 ... third locking nut.

Claims (5)

A plurality of casters including a brake caster configured to be brakeable;
A brake operation unit that is manually operated to a brake operation position for braking the brake caster and a brake release operation position for releasing the brake, and moves a brake wire in an axial direction in accordance with the manual operation;
A plurality of braking units connected to the brake wire and braking the braking caster according to the axial movement of the brake wire, or releasing the braking;
A plurality of brake wire adjusting devices for adjusting the length of the brake wire;
A caster brake device comprising: The brake wire connects the brake operation unit and the braking unit, and covers the outer surface with an outer tube having elasticity,
The caster according to claim 1, wherein the brake wire adjusting device is configured to relatively adjust the length of the brake wire by adjusting the length of the outer tube. Brake device. The plurality of casters are disposed at one end of a heel provided with a lid body that can be opened and closed on the heel body. The plurality of casters are provided on one of the heel body and the lid body, and the other can be braked. Provide a plurality of non-braking casters that are not configured,
The caster brake device according to claim 1 or 2, wherein the brake wire adjusting device is disposed on the bag main body and the lid body, respectively. The scissors are provided with a brake operation unit on one of the scissors main body and the lid, and on the other side a brake unit is disposed, and the brake wire is disposed so as to straddle the scissors main body and the lid. The caster brake device according to claim 3, wherein the caster brake device is provided. The brake wire adjusting device is
A fixed wall having a through-hole formed in the inner surface of the flange and penetrating in the wall thickness direction;
The outer tube is divided in the radial direction to connect a pair of opposed end portions opposed to each other at a predetermined interval in the axial direction, and an insertion hole through which the brake wire is inserted is formed inside, while a screw portion is formed on the outer surface A first adjusting screw forming
First and second lock nuts that are screwed on both sides of the fixed wall to the threaded portion of the first adjustment screw that is inserted into the through hole of the fixed wall, and sandwiches both sides of the fixed wall. And a first adjusting device disposed in the vicinity of the brake operation unit,
While the outer tube is divided in the radial direction and disposed at a pair of opposed end portions opposed to each other at a predetermined interval in the axial direction, an insertion hole through which the brake wire is inserted is formed. Second and third adjusting screws each having a threaded portion formed on the outer surface;
An adjustment nut having a screw portion screwed to the screw portion of the second adjustment screw and a fixing portion fixed to the third adjustment screw;
A third lock nut fixed to the threaded portion of the second adjustment screw at one end of the adjustment nut;
A second adjusting device disposed in the vicinity of the braking unit;
The caster brake device according to claim 3 or 4, further comprising:

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