TWM564399U - Wheel device - Google Patents

Abstract

A caster device includes a wheel seat, an insert, an elastic member, a wheel axle, a wheel unit, and a card insertion unit. The wheel seat defines two left and right spaced apart jacks, and an opening space that extends downwardly and upwardly and communicates with the jacks. The insert is inserted into the insertion space, and is formed with a circulator which is connected to the left and right and communicates with the jacks. The elastic member is supported by the upper and lower seats between the wheel base and the insert. The axle is axially inserted into the jacks and the insertion channel. The runner unit is sleeved on the axle and is rotatable. The card insertion unit includes a card insertion group disposed on the wheel base, and an embedded card group disposed on the wheel unit and below the card assembly. The new model can provide a movable mode when the load is stopped/loadless.

Description

Caster device

The present invention relates to a member of a movable seat, a cart or a suitcase, and more particularly to a caster device.

Referring to Figures 1 to 3, a new type of M524290 discloses a caster device. The caster device is adapted to be mounted on an object having a moving demand through a connector (not shown). The object with mobile requirements, for example, can be a seat or a suitcase. In the following description, a seat (not shown) is taken as an example for illustration. The caster device includes a wheel base 11 formed with two left and right opposite insertion holes 111 (only one of which is shown in the perspective view), one of which is vertically inserted into the wheel base 11 and can be assembled with the connection seat. The insertion shaft 12, an insert 13 that is disposed in the wheel base 11 and formed with a spigot 131 that communicates with the insertion holes 111, a spring 14 that is supported between the wheel base 11 and the insert 13 and a spring An axle 15 that traverses the socket 111 and the insertion hole 131 to position the wheel seat 11 and the insert 13 and two wheels that are respectively sleeved at opposite ends of the axle 15 16. The wheel base 11 has two stop blocks 112 at the top end and projecting from the left and right sides to the wheels 16 respectively. Each of the wheels 16 has an inner race surface 161 that faces the axle 15 and is separably separable for each of the stop blocks 112.

Each of the stopper blocks 112 can be abutted against a stop position of the inner wheel surface 161 of each of the wheels 16 as shown in FIG. 2, and converted to a position as shown in FIG. Each of the wheels 16 is spaced apart by a spaced apart position. In the stop position, the spring 14 provides an elastic force to vertically open the wheel base 11 and the insert 13 so that each of the stop blocks 112 of the wheel base 11 abuts against the wheels 16 respectively. The one of the inner treads 161 is such that the wheels 16 cannot be rotated by the frictional force and the stopping effect is achieved. If the seat is subjected to a load, for example, a user rides thereon, the connecting seat and the insertion shaft 12 will press the wheel base 11 downward and compress the spring 14 so that each of the stoppers 112 Moving down to the spaced position to be spaced from the inner race surface 161 of each of the wheels 16 to allow the wheels 16 to freely rotate and to move the user on the seat to move The seat, and when the user leaves the seat, the stop block 112 will return to the stop position under the action of the spring 14, thereby preventing the seat from sliding freely.

Such a conventional caster device can provide a usage mode in which a load can be stopped when the load is movable/no load, but it cannot provide a movable mode when the load is stopped or no load, and the stop effect is poor. needs to be improved.

It is an object of the present invention to provide a caster device that overcomes at least one of the disadvantages of the prior art.

The caster device comprises a wheel base, an insert, an elastic member, an axle, a runner unit, and a card insertion unit.

The wheel base defines two left and right spaced and through holes, and an insertion opening that extends downwardly and upwardly and communicates with the jacks. The insert is inserted into the insertion space, and is formed with a circulator which is connected to the left and right and communicates with the jacks. The elastic member is supported up and down between the wheel base and the insert. The wheel shaft is axially inserted into the insertion hole and the insertion channel, and has a diameter smaller than an upper and lower width of the sockets, and allows the wheel base to move up and down relative to the wheel axle. The runner unit is sleeved on the axle and is rotatable to roll on the ground. The card insertion unit includes a card set that is disposed on the wheel base in a linked manner, and an embedded card set that is disposed on the wheel unit and is located below the card set. The card insert group can be driven by the wheel seat, and is spaced apart from the card set to allow the wheel unit to rotate relative to the wheel base, and is moved downward to be engaged with the card set without A latching position that allows the reel unit to rotate relative to the wheel mount.

The function of the caster device is that when the wheel seat moves downward due to the load, the card insert group can be engaged with the card set, so that the wheel unit can be prevented from rotating when the load is applied, so that the caster can be provided. The mode of use that the device cannot provide, and the card set and the card set are engaged with each other to provide a better stop effect.

Referring to Figures 4 through 6, an embodiment of the caster assembly of the present invention is adapted to be mounted to a moving object (not shown) through a connecting device 2. In the embodiment, the seat is taken as an example, but it is not limited thereto, and can also be other items with moving requirements. The connecting device 2 includes a connector (not shown) and a pin 21 that is inserted between the embodiment and the connector. Since the technique of designing the shaft 21 and the structure of the joint is a general knowledge, it will not be described here.

The embodiment includes a wheel base 3 for inserting the insertion shaft 21, an insert 4 inserted into the wheel base 3, a spring member 5 disposed between the wheel base 3 and the insert 4, and a wearer. An axle 6 disposed on the wheel base 3 and the insert 4, a runner unit 7 sleeved on the axle 6, and a latching unit 8 disposed on the wheelbase 3 and the runner unit 7.

The wheel base 3 is substantially semi-circular and defines a slot 31 which is recessed from top to bottom and which is inserted into the plug shaft 21, and two centrally located left and right spaced sockets 32 (auxiliary reference FIG. 7), and An opening 33 that extends downwardly and extends from the bottom to the top and communicates between the receptacles 32 (see Figure 7). Each of the jacks 32 extends vertically upward and downward.

Referring to Figures 4, 6, and 7, the insert 4 has an insertion portion 41 that is inserted into the insertion space 33, and a projection 42 that projects downwardly from the insertion portion 41. A cylindrical portion 43 projecting upward from the top end of the insertion portion 41 and capable of arranging the elastic member 5.

The insertion portion 41 has a central portion 411 located at the center and having a substantially circular cross section, and an extension portion extending from the front and rear ends of the central portion 411 and having a left and right width W1 smaller than the width W2 of the central portion 411 412. The central section 411 is formed with a shed 413 that penetrates the left and right and communicates with the receptacles 32. The protruding portion 42 has a substantially rectangular cross section and an area smaller than an area of the cross section of the insertion portion 41.

The elastic member 5 is disposed on the central portion 411 of the insert 4 and sleeved on the cylindrical portion 43 of the insert 4. The upper end abuts the wheel base 3, and the lower end abuts the top surface of the central portion 411. Supported between the wheel base 3 and the insert 4.

Referring to FIGS. 4, 5, and 7, the axle 6 is axially inserted into the insertion hole 32 and the insertion hole 413, and the diameter D1 of the axle 6 is smaller than the upward and downward direction of each of the insertion holes 32. Hole width W3.

The wheel unit 7 includes two wheels 71 that are respectively sleeved on the left and right ends of the axle 6 and rotatable. Each of the wheels 71 has an outer race 711 that is capable of abutting against the ground to roll on the ground, and an inner race 712 that is radially spaced from the outer race 711 and that surrounds the hub.

The card insertion unit 8 includes a locking group 81 that is disposed on the wheel base 3 in a linked manner, and a card group 82 that is disposed on the wheel unit 7 and is located below the card group 81. The card insertion group 81 includes two protruding members 811 which are respectively extended from the upper left and right opposite bottom sides of the wheel base 3 from the top to the bottom. The teeth 811 are connected to the wheel base 3 in the same body. The card set 82 has two ring teeth 821 respectively disposed on the wheels 71 and spaced apart from the teeth 811, respectively. Each of the ring-shaped teeth 821 is connected to the inner wheel surface 712 of each of the wheels 71, and can be separately detachably engaged with the one of the teeth 811.

The protruding members 811 of the card insertion group 81 can be changed to a position as shown in FIGS. 9 and 10 and displayed in a position as shown in FIGS. 7 and 8 and the seat is not provided for a user to ride. The position of the card for the user to ride.

Referring to Figures 4, 7, and 8, in the spaced position, the elastic member 5 vertically supports the wheel base 3 and the insert 4 such that the axle 6 inserted into the insert 4 is located in each of the receptacles 32. The bottom portion of the gear member 811 disposed on the wheel base 3 is spaced above the ring gear member 821, respectively. At this time, the wheels 71 of the wheel unit 7 are freely rotatable relative to the wheel base 3 and are rotatable on the ground for the seat to move.

When the user provides a load on the seat, the connecting device 2 is pushed down against the wheel base 3, so that the protruding members 811 are respectively moved downward toward the ring gears 821, so that the card is inserted. Group 81 comes to the snap position from the spaced position.

Referring to Figures 4, 9, and 10, in the engaged position, the wheel base 3 cooperates with the insert 4 to compress the elastic member 5, so that the elastic member 5 stores the elastic force, and the axle 6 is located at the jack 32. The top teeth of each of the teeth 811 respectively engage the ring gear members 821. At this time, the wheels 71 of the runner unit 7 are restricted by the teeth 811, so that they cannot be rotated relative to the wheel base 3, thereby generating the effect of avoiding the arbitrary movement of the seat. If the user gets up from the seat, the elastic member 5 will release the elastic force to open the wheel base 3 and the insert 4 up and down, return the card set 81 to the spaced position, and allow the wheels again. 71 is free to rotate relative to the wheel base 3.

In other embodiments of the present invention, the protrusions 811 are not connected to the wheel base 3, and the ring gears 821 are not connected to the wheels 71, as long as the ring gears 821 are connected to the wheels 71. The teeth 811 are interlocked with the wheel base 3, and the ring gears 821 are interlocked with the wheels 71. The protruding members 811 project downwardly from each other toward the ring members 821, and are preferably engaged with the ring members 821 and provide a better stopping effect.

The insertion portion 41 of the insert 4 has a design of the central portion 411 and the extensions 412 to ensure stability of the insert 4 in the wheel mount 3. In addition, the design of the protruding portion 42 of the insert 4 that is smaller than the insertion portion 41 and protrudes has the advantage that the insert 4 can be taken during assembly and maintenance.

In summary, the effect of the caster device of the present invention is that when the wheel base 3 moves downward due to the weight, the card assembly 81 can be moved downward to engage with the embedded card group 82 located below, thereby enabling When the load is applied, the rotation of the reel unit 7 is prevented, and the use mode that the conventional caster device cannot provide can be provided, and the design of the engagement group 81 and the embedding group 82 can be engaged with each other, compared with the conventional friction. Dynamic design also provides better stop effects.

The above description is only an embodiment of the present invention, and the scope of the patent application of the present invention cannot be limited thereto. Equivalent changes and modifications made in accordance with the scope of this new patent application and the new specification are still covered by this new patent.

2‧‧‧Connecting device
21‧‧‧ Inserted shaft
3‧‧·wheel seat
31‧‧‧ slots
32‧‧‧ jack
33‧‧‧Interposed space
4‧‧‧ plugin
41‧‧‧Internal Department
411‧‧‧Central section
412‧‧‧Extension
413‧‧‧Introduction
42‧‧‧Protruding
43‧‧‧Cylinder
5‧‧‧Arms
6‧‧‧Axle
7‧‧‧runner unit
71‧‧‧ Wheels
711‧‧‧Outer tread
712‧‧‧ inner tread
8‧‧‧Card unit
81‧‧‧ card embedded group
811‧‧‧ protruding parts
82‧‧‧ embedded card group
821‧‧‧ ring gear
D1‧‧‧ diameter
Width around W1‧‧
Width around W2‧‧
W3‧‧‧ hole width

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is an exploded perspective view of a conventional caster device; Figure 2 is a cross-sectional view of an incomplete section , which shows that one of the stop blocks of the caster device is in a stop position; FIG. 3 is a combined sectional view similar to FIG. 2, illustrating that one of the stop blocks is in a spaced position; FIG. 4 is an exploded perspective view of the present invention; An embodiment of the novel caster device; Fig. 5 is a side elevational view showing the relative insertion relationship of a wheel base and an axle of the embodiment; Fig. 6 is a perspective view showing an insert of the embodiment; A combined cross-sectional view illustrating the left and right cut configuration of the embodiment, and a snap-in group of the embodiment is in a spaced position; FIG. 8 is a combined cross-sectional view illustrating the front and rear cut configuration of the embodiment, and the clip set In this spaced position; FIG. 9 is a combined cross-sectional view similar to FIG. 7 illustrating the card set in a latched position; and FIG. 10 is a view similar to FIG. Co-sectional view illustrating the card fitted in the card set position is embedded.

Claims (6)

A caster device comprising: a wheel base defining two left and right spaced through holes, and an insertion opening extending downwardly and upwardly and communicating with the jacks; a plug-in inserted in The insertion space is formed with a circulator which is connected to the left and right and communicates with the jacks; a resilient member is supported between the wheel base and the insert; and an axle is axially inserted a socket and the insertion channel, and having a diameter smaller than a hole width of the jacks up and down, allowing the wheel base to move up and down relative to the wheel axle; and a runner unit sleeved on the axle and capable of rotating on the ground Scrolling; a card insertion unit comprising a card set disposed in linkage with the wheel base, and an embedded card set that is disposed on the wheel unit and below the card set, and the card set can Driven by the wheel seat, by an interval spaced from the card set to allow the wheel unit to rotate relative to the wheel block, moving downward to change to engage with the card set without allowing the wheel unit Card clamping position relative to the rotation of the wheel seat . The caster device of claim 1, wherein the runner unit comprises two wheels respectively sleeved on the left and right ends of the wheel axle, the card set having two ring teeth respectively disposed on the inner wheel faces of the wheels The card assembly includes two protruding members disposed on the wheel base and projecting downwardly toward the ring teeth. In the spaced position, the protruding members are respectively spaced from the ring members. In the engaged position, the protruding teeth are respectively engaged with the ring teeth. The caster device of claim 2, wherein the protruding members extend from top to bottom. The caster device according to any one of claims 1 to 3, wherein the insert has an insertion portion that is inserted into the insertion space and is formed with the insertion channel, and a projection portion that protrudes downward from the insertion portion A protrusion that protrudes from the insertion space and has an area of a cross section smaller than an area of a cross section of the insertion portion. The caster device according to claim 4, wherein the elastic member is a spring, and the insert further has a cylindrical portion projecting upward from the top end of the insertion portion and capable of being sleeved by the elastic member. The caster device of claim 5, wherein the insertion portion has a central portion at the center and having a circular cross section, and the front and rear ends of the central portion are extended in opposite directions and the left and right widths are smaller than the central portion. The extension of the left and right width.