JP3122929U - Casters for suitcases - Google Patents

Abstract

A caster for use in a suitcase that has a reliable braking effect and is convenient for operation.
A ring seat 40 fixed to a suitcase and having an upper through hole, a bracket 50 pivotally connected to the wheel seat 40 and a lower through hole 52, and a rotating portion 82 pivotally connected to the bracket 50 and installed coaxially. A braking device including a ring body 80 in which the diameter of the rotating portion 82 is larger than the diameter of the stopping portion 84, a switching member 91, a driven rod 92, and a brake member 96. It is pivotable between the wheel seat 40 and can swing between a first position and a second position, and has a contact end and a drive end. The contact end appears outside the wheel seat 40, and a driven rod 92. Is formed in the upper through hole of the wheel seat 40 and the lower through hole 52 of the bracket 50, the top end of the driven rod 92 is pivotally connected to the drive end of the switching member 91, and the brake member 96 is connected to the bottom end of the driven rod 92. And a braking device having a stop stop.
[Selection] Figure 2

Description

  The present invention relates to a suitcase, and more particularly, to a caster used for a suitcase having a brake structure.

The suitcase is provided with a plurality of casters that can be moved by being pushed or pulled on the bottom side so that the suitcase can be easily transported. Such a type of suitcase is further provided with a brake device capable of stopping the rotation of the caster in order to prevent the suitcase from moving due to factors such as a slope or a collision from an external force. .
FIG. 1 shows a caster 1 of a certain type of suitcase, which has a wheel seat 11, a bracket 12, a ring body 13, a contact piece 14, and a switching member 15. The wheel seat 11 is coupled to the main body 10 of the suitcase, the bracket 12 is pivotally connected to the wheel seat 11, the wheel body 13 is pivotally connected to the bracket 12, and one end of the contact piece 14 is fixed to the bracket 12 and the other end is in contact. An end 141 is formed, one end of the switching member 15 pivots with the bracket 12, the other end forms a pressing end 151, and the switching member 15 forms a contact portion 152 between the pressing end 151 and one end pivoting. . When the pressing member 151 is used to swing the switching member 15 while being pivoted downward, the contact portion 152 simultaneously contacts the contact piece 14 until the contact end 141 of the contact piece 14 contacts the ring surface of the ring body 13. Is depressed to produce a braking effect on the wheel body 13.

In the above-described coupling, the contact friction area between the contact end 141 of the contact piece 14 and the ring surface of the ring body 13 is small, the contact end 141 and the ring surface of the ring body 13 are contacted by “points”, and the contact point Is located on the side away from the rotational center position of the ring body 13. Therefore, the installation method described above is applied only when the rotation of the ring body 13 is limited to one direction. The state shown in the drawing is a state in which the ring body 13 that rotates clockwise is suitable for producing a braking effect. On the other hand, when the ring body 13 rotates in the counterclockwise direction, the contact end 141 of the contact piece 14 is insufficient to resist the rotation of the ring body 13, and the suitcase 10 receives the action of external force and moves. Will result.
Further, since the switching member 15 for controlling the brake is connected to the bracket 12 rotated at the original position, the switching member 15 is not placed at the fixed position, and the user tries to control the ring body 13 so as not to rotate. First, the pressing end 151 of the switching member 15 is searched and then used, which is inconvenient in the guidance operation.

  The main object of the present invention is to provide a caster for use in a suitcase, and to provide a caster for use in a suitcase having advantages of having a reliable braking effect and being convenient in operation.

  In order to achieve the above-described object, a caster used in a suitcase provided by the present invention includes a wheel seat, a bracket, a wheel body, and a braking device. The wheel seat is fixed to the suitcase and has an upper through hole. The bracket pivots with the wheel seat and has a lower through hole. The wheel seat is pivotally connected to the bracket and has a rotating portion coaxially installed and at least one restraining portion, and the diameter of the rotating portion is larger than the diameter of the restraining portion. The braking device includes a switching member, a driven rod, and a brake member. The switching member is pivotally connected to the wheel seat and can swing between the first position and the second position, and has a contact end and a drive end. The contact end appears outside the wheel seat, the driven rod is drilled in the upper through hole of the wheel seat and the lower through hole of the bracket, the top end of the driven rod is pivotally connected to the drive end of the switching member, and the brake The member is connected to the bottom end of the driven rod and has a stop portion. When the switching member is in the first position, the driven rod moves in the first direction, causing the stopping portion of the brake member to abut against the stopping portion of the ring body. When the switching member is in the second position, the follower rod moves in a second direction opposite to the first direction, and the stop portion of the brake member is made to correspond to the stop portion of the wheel body and separated.

  By passing through the braking device, the switching member can be reliably operated between the first position and the second position so that the positioning can be performed. It is possible to achieve the purpose of ensuring the braking effect regardless of whether the ring is rotated clockwise or counterclockwise. In addition, when the pulling member is in the fixed position, it does not rotate and move according to the movement of the ring body or the bracket, providing convenience in operation. As described above, the present invention has an advantage that the braking effect is reliably achieved and the operation is convenient.

In order to explain the structure, features, and effects of the present invention in detail, the following two preferred embodiments will be described with reference to the drawings.
2 to 7, the caster 30 used in the suitcase according to the first embodiment of the present invention includes a wheel seat 40, a bracket 50, a shaft sleeve 60, a bearing 70, a ring body 80, and a braking device. 90.

The wheel seat 40 is fixed to the suitcase and has an upper through hole 42 and an opening 44.
The bracket 50 is located below the wheel seat 40 and includes a top plate 51, two pivot ears 54, a shaft pin 56, and a screw 58. The top plate 51 has a lower through hole 52, and the two pivotal ears 54 are connected to both sides of the top plate 51. Each pivot ear 54 further has a through hole 55.

  The shaft sleeve 60 is a circular tube having a shaft hole 62, and is simultaneously drilled into the upper through hole 42 of the wheel seat 40 and the lower through hole 52 of the bracket 50. The bottom end of the shaft sleeve 60 is It extends straight outward and forms the upper stop edge 64. As shown in FIG. 3, the upper restraining edge 64 abuts on a spacer 65 installed inside the wheel seat 40, and the bottom end of the shaft sleeve 60 extends straight outward, and the lower restraining edge. 66, and the lower restraining end 66 contacts the inner surface of the bracket 50. Thus, the bracket 50 is pivotally connected to the wheel seat 40 and can rotate corresponding to the wheel seat 40. In addition, the shaft sleeve 60 has an inner convex edge 63 in the shaft hole 62.

  The bearing 70 includes a ring piece 72 and a plurality of balls 74, and the ring piece 72 is located between the wheel seat 40 and the bracket 50 and has a center hole 76 and a plurality of support holes 78. The support holes 78 are distributed around the center hole 76 and are used to install the balls 74. The top edge of each ball 74 abuts on the spacer 67, and the bottom edge contacts the top end surface of the bracket 50.

  The ring body 80 includes a rotating portion 82, two restraining portions 84, and a through hole 86 that are installed coaxially. The diameter of the rotating part 82 is larger than the diameter of the restraining part 84, and the two restraining parts 84 are each formed in a concave shape from both side surfaces of the rotating part 82, and further, an outer convex piece 841 arranged so as to surround a plurality of , And a concave groove 842 positioned between adjacent outer convex pieces 841. The shaft pin 56 of the bracket 50 penetrates the through hole 55 of the two pivotal ears 54 and the through hole 86 of the ring body 80, and is screwed and fixed to the screw 58. Pivot 50.

The braking device 90 includes a switching member 91, a driven rod 92, a shaft cap 93, a shaft rod 94, two springs 95, and a brake member 96.
The switching member 91 has a substantially plate-like body, is drilled by a shaft pin 911, and is pivotally connected to the wheel seat 40. Further, it is possible to swing between the first position P1 (see FIG. 3) and the second position P2 (see FIG. 6), and both ends of the switching member 91 become a contact end 912 and a drive end 913, respectively. . The contact end 912 is pierced from the opening 44 of the wheel seat 40 and appears outside the wheel seat 40. FIG. 4 shows that the drive end 913 is composed of two parallel protruding ears 913a.

The driven rod 92 is provided with a ring groove 921 at a portion close to the top end and a ring 922 at the bottom end.
The shaft cap 93 is fixed to the top end of the driven rod 92 and is positioned between the two convex ears 913a. The shaft cap 93 has a lateral hole 931.
The shaft rod 94 passes through the two convex ears 913a and the through hole 931 of the shaft cap 93 at the same time, and pivotally connects the top end of the driven rod 92 and the switching member 91.

One end of the two springs 95 is in contact with the two convex ears 913a of the switching member 91, and the other end is in contact with the inner wall surface of the wheel seat 40, so that the switching member 91 is securely in the first position P1. Alternatively, it is used to provide an acting force for positioning to the second position P2.
The brake member 96 includes a top plate 961 and a side plate 962 extending downward from both ends of the top plate 961. The top plate 961 has a through hole 961a, and the diameter of the through hole 961a is a ring. It is smaller than the diameter of 922. Therefore, after the driven rod 92 penetrates the through hole 961a, the ring 922 and the inner surface of the top plate 961 come into contact with each other. The inner surfaces of the two side plates 962 have a stop portion constituted by a protruding stop piece 963, and the stop piece 963 has a substantially triangular pyramid shape.

The above describes the caster 30 structure according to the first embodiment of the present invention. The brake control method for the caster 30 will be described below.
3 to 5 show a process in which the contact end 912 of the switching member 91 is pulled down to the first position P1. When the restraining piece 963 of the brake member 962 is dropped into the concave groove 842 of the ring body 80 and the top plate 961 and the inner convex edge 63 of the shaft sleeve 60 come into contact with each other, the upward movement starts to stop. Then, a braking effect is created for the ring body 80, which helps to prevent the ring body 80 from rotating again regardless of whether the ring body 80 is clockwise or counterclockwise.

  In order to release the brake state, the user only has to pull up the contact end 912 of the switching member 91. As shown in FIGS. 6 and 7, the contact end 912 of the switching member 91 is located at the second position P2 from the first position P1. At this time, the follower rod 92 moves downward in the second direction D2, and the restraining piece 963 of the brake member 96 is disengaged corresponding to the concave groove 842 of the ring body 80. In this way, the ring body 80 is restored to a freely rotatable state, and the suitcase can be pulled by the rotation of the caster 30. As described above, fixing the position of the switching member 91 of the caster 30 of the first embodiment is useful for the user to quickly perform the brake operation and the release operation.

8 and 9 show a second embodiment of the present invention. The caster 30a has the same structure and operating principle as the caster 30 in the first embodiment, but the second embodiment is different. The restraining piece 963a of the caster 30a is a point having a substantially cylindrical shape.
The above is described only as a more preferable embodiment of the present invention, and the configurations and modifications having the same effect obtained by applying the specification of the present invention and the claims of the utility model registration are almost the same as the present invention. Must be included within the scope of the claims.

It is a structure figure of the caster of the conventional suitcase. 1 is an exploded perspective view of a caster according to a first embodiment of the present invention. It is sectional drawing of the caster by 1st Example of this invention, and shows the state which has a switching member in a 1st position. FIG. 4 is a top view of FIG. 3. It is sectional drawing of the caster by 1st Example of this invention, and shows the state which has a switching member in a 1st position. It is sectional drawing of the caster by 1st Example of this invention, and shows the state which has a switching member in a 2nd position. It is sectional drawing of the caster by 1st Example of this invention, and shows the state which has a switching member in a 2nd position. It is sectional drawing of the caster by 2nd Example of this invention. It is sectional drawing of the caster by 2nd Example of this invention.

Explanation of symbols

  30, 30a Casters used for suitcases, 40 wheel seats, 42 upper through holes, 44 openings, 50 brackets, 51 top plate, 52 lower through holes, 54 pivot ears, 55 through holes, 56 shaft pins, 58 screws, 60 Shaft sleeve, 62 Shaft hole, 63 Inner convex edge, 64 Upper restraining edge, 65 Upper spacer, 66 Lower restraining edge, 67 Lower spacer, 70 Bearing, 72 Ring piece, 74 Ball, 76 Center hole, 78 Support hole, 80 ring body, 82 rotating portion, 84 stop portion, 841 outer convex piece, 842 concave groove, 86 through hole, 90 brake device, 91 switching member, 911 shaft pin, 912 contact end, 913 drive end, 913a convex ear, 92 Follower rod, 921 Ring groove, 922 ring, 93 axle cap, 931 Lateral through hole, 94 axle rod, 95 spring, 96 brace Members, 961 top plate, 961a penetration hole 962 side plate, 963,963A stop piece, D1 a first direction, D2 second direction, P2 first position, P2 second position

Claims (7)

In casters used for suitcases,
A ring seat fixed to the suitcase and having an upper through hole;
A bracket pivotally connected to the wheel seat and having a lower through hole;
A rotating part pivotally connected to the bracket and installed coaxially;
A ring having at least one restraining part, wherein the diameter of the rotating part is larger than the diameter of the restraining part;
A braking device having a switching member, a driven rod, and a brake member, wherein the switching member is pivotally connected to the wheel seat and can swing between a first position and a second position. An end and a drive end, the contact end appears outside the wheel seat, the driven rod is drilled in the upper through hole of the wheel seat and the lower through hole of the bracket, and the top end of the driven rod is switched Pivotally connected to the drive end of the member, the brake member is connected to the bottom end of the driven rod, further has a stop, and when the switching member is in the first position, the driven rod moves in the first direction; The stop portion of the brake member is caused to abut against the stop portion of the ring body, and when the switching member is in the second position, the driven rod moves in a second direction opposite to the first direction, A braking device for causing the stop portion of the brake member to correspond to the stop portion of the ring and separating the brake member;
A caster used for a suitcase characterized by comprising: The follower rod is provided with a ring groove in a portion near its top end,
The drive end of the switching member is composed of two parallel protruding ears,
The braking device includes a shaft cap and a shaft rod, the shaft cap is fixed to the top end of the follower rod, and is positioned between the two convex ears, and the shaft rod is simultaneously the two convex ears. The caster used for a suitcase according to claim 1, wherein the caster penetrates through a portion and the shaft cap, and the shaft bar is formed in a ring groove of the driven rod.   The braking device further includes at least one spring, one end of the spring abuts the convex ear of the switching member, the other end abuts the inner wall surface of the wheel seat, and the spring pushes the switching member. The caster used for a suitcase according to claim 2, wherein the caster is surely positioned to the first position or the second position. The ring body includes two restraining portions, each of the two restraining portions being formed in a concave shape from both side surfaces of the rotating portion, and a plurality of outer convex pieces arranged so as to surround each other and adjacent outer convex pieces. Having a concave groove located at
The brake member has a top plate and a side plate extending downward from both ends of the top plate, the top plate and the bottom end of the driven rod are connected, and the two side plates are the two restraining plates. Each side plate has a stop piece, the stop piece constitutes the stop portion, and when the switching member is in the first position, the follower rod moves upward, The caster used for a suitcase according to claim 1, wherein the restraining piece of each side plate of the brake member is dropped into a corresponding concave groove.   5. The top plate has a through hole, the bottom end of the driven rod penetrates the through hole, and a ring is provided, and the diameter of the ring is larger than the diameter of the through hole. Caster used for the suitcase described in 1.   A shaft sleeve provided in the upper through hole of the wheel seat and the lower through hole of the bracket and having a shaft hole provided for penetrating the driven rod is provided, and the top of the wheel seat is provided at the top end of the shaft sleeve. By providing an upper stop edge that contacts the inner surface, and by providing a lower stop edge that contacts the inner surface of the bracket at the bottom end of the shaft sleeve, the bracket and the wheel seat are pivotally connected to correspond to the wheel seat. The caster used for a suitcase according to claim 1, wherein the caster can rotate. A bearing having a ring piece and a plurality of balls;
The ring piece is located between the shaft sleeve and the bracket, and has a central hole for penetrating the driven rod,
The caster used for a suitcase according to claim 6, wherein a plurality of support holes are distributed around the center hole in order to contain the ball.

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