KR101172849B1 - Folding wheel - Google Patents

Abstract

PURPOSE: A foldable wheel is provided to adjust the size of a wheel simply by adjusting supports for a unit wheel. CONSTITUTION: A foldable wheel comprises a unit wheel(10), a main supporting shaft, a connecting member, an auxiliary supporting shaft, a wire(50), and an operation member. The unit wheel is composed of a plurality of wheel frame segments. The main supporting shaft is composed of an inner shaft(24) and an outer shaft(22). The connecting member connects the unit wheels. The auxiliary supporting shaft is fixed in the inner and outer portions of the unit wheel. The wire forms the circular shape of a wheel by coupling unit wheels. The operation member fixes the unit wheels not to be separated from each other.

Description

Folding Wheels {FOLDING WHEEL}

The present invention relates to a folding wheel, and more particularly, to divide the wheel into a plurality of unit wheels. As the unit wheel is divided by the rotation of the support shaft composed of the inner shaft and the outer shaft, the width decreases, and the unit wheel expands and returns to its original state as the support shaft contracts.

In general, wheels were invented before the four great inventions of mankind, the first of which was used by native humans to roll logs, and the wheels that fixed the wheels and wheel axles today were invented in the Mesopotamiya civilization thousands of years ago.

However, wheels today are used not only for rolling on the ground, but also for a variety of applications such as watches and cogs, and steering wheels.

Such wheels are widely used in the modern times by applying to rolling means such as cars, bicycles, wheelchairs.

The above-mentioned invention means the background art of the technical field to which the present invention belongs, and does not mean the prior art.

However, since the existing wheels are formed in a circular shape and have a maximum volume, there is an inconvenience in storage management. Therefore, there is a need to improve this.

The present invention is created by the above necessity, and divides the wheel into a plurality of unit wheels. As the unit wheel is divided and rotated as the support shaft consisting of the inner and outer shafts unfolds, the width and space volume are reduced. The purpose is to provide.

In addition, the present invention uses a wire provided with a adjustable length in the support shaft to connect the unit wheels by pulling or pushing each other, so that unit wheels are integrated to prevent the unit wheels from being separated even if the wheels are impacted. The purpose is to provide a wheel.

In addition, an object of the present invention is to provide a folding wheel that can be easily divided or united by the unit wheel having a connection member connected to each other receivable inside the unit wheel.

In addition, the present invention is to separate or combine the unit wheel groups by expanding or contracting the support shaft consisting of a plurality of inner and outer shafts formed on the outer periphery around the hub as an umbrella stand, a plurality of unit wheel groups fixed support shaft when contracted The object is to provide a folding wheel that can reduce the size of the wheel because it rotates.

Folding wheel according to an embodiment of the present invention to achieve the above object, the unit wheel made by dividing the wheel into a plurality; A main support shaft consisting of an inner shaft and an outer shaft fixed to each of the selected unit wheels to vary the connection form of the unit wheels according to length adjustment; A connection member interconnecting the unit wheels; An auxiliary support shaft whose one end is hinged inside the unit wheel and whose other end is hinged to the outer shaft and whose length is adjusted to support a circular wheel load; A wire connected to the unit wheel through the main support shaft to be pulled out when the main support shaft contracts to couple the unit wheels to maintain a circular wheel shape; And an operation member for additionally pulling the wire by rotation after the main support shaft contraction to restrain the unit wheels from being separated.

In addition, the unit wheel is characterized in that formed by dividing evenly.

In addition, the connection member is hinged to any one of the unit wheels, and is housed in a receiving groove formed in the other unit wheels adjacent to each other, the receiving grooves are provided on both sides with respect to the cross section of the unit wheel, respectively Features,

In addition, both sides of the unit wheel is formed with a projection-shaped teeth, characterized in that it is provided between the outer shaft and the inner shaft is provided with a coupling pin to be inserted into the through hole of the inner shaft to prevent separation.

In addition, the auxiliary support shaft is provided on both sides with respect to the main support shaft, the link shaft is folded or unfolded in a multi-stage rotation or sliding manner; And a cylinder shaft which is symmetrically formed on the link axis with respect to the center of the axle, and is provided on both sides at predetermined intervals about the main support shaft to vary the length of the rod with respect to the body.

In addition, the wires are interconnected between the unit wheels through the connection hole formed in the unit wheel, both ends of the wire are provided on the main support shaft in the state of winding the wheel once, the connection hole is the connection member It is disposed between, the connection hole is characterized in that a plurality of fixed rollers for supporting the movement of the wire is provided.

In addition, the wire is a main wire for providing a main tension; And an auxiliary wire providing an auxiliary tension together with the main wire.

In addition, the operating member is a recessed groove formed on both sides of the inner shaft of the main support shaft; A moving roller fixed to an inner surface of the outer shaft so that the main wires fixed to the moving grooves are pulled while rotating the outer shaft; And a lever member disposed adjacent to the moving roller and hinged to the outer shaft to pull the auxiliary wire by the rotation of the rotating roller to further restrain the circular unit wheel.

In addition, the auxiliary groove is operated by the auxiliary wire tensioned by the rotation of the lever member has an auxiliary coupling for further binding the unit wheels, the auxiliary coupling portion is formed in the interior of the unit wheel; A fitting lever rotatably installed in the installation groove, and having a fitting protrusion inserted into a fitting groove of a unit wheel adjacent to the roller and the other end of which the auxiliary wire is caught at one end; And an elastic spring that provides an elastic force to the fitting lever.

In addition, a locking portion for constraining the cylinder shaft and the outer shaft of the main support shaft to maintain the circular state of the unit wheel, the locking portion is fixed to the outer portion to the outer shaft is pulled connected to the cylinder shaft wire; A winding roller installed on a rod of a cylinder shaft so that the pulling wire is wound and supported; An end of the pulling wire is fixed and is rotatably installed on the rod to pull or release the pulling wire; And a locking hook formed on the body to lock the locking lever to fix the body to the rod.

Folding wheel according to another embodiment of the present invention, the unit wheel made by dividing the wheel into a plurality; A main support shaft having one end connected to a link connected to a unit wheel located at a center by collecting the unit wheels as a set number of unit wheel groups, and the other end connected to a hub; A connection member coupled to interconnect the unit wheels of the unit wheel groups; A wire that extends or retracts the unit wheels of the unit wheel groups by mutually pulling or pushing each other; And an operating member slidably coupled to an outer side of the main support shaft to operate the wire.

In addition, the main support shaft is rotated to the side of the hub in the state that the unit wheels are arranged on both sides by the contraction movement in the center direction of the operating member, respectively, and the unit wheels are respectively supported on both sides. It is characterized by.

In addition, the hub is provided with a rotation cap rotatably installed to open or constrain the side hinge rotation of the main support shaft through an open groove, and the main support shaft is provided with a spring for pushing the operation member outwardly It is characterized by.

In addition, the operation member is provided with an elastic locking projection that is caught when the spring is pressed by the compression, the elastic locking projection is characterized in that the locking operation is provided on the main support shaft.

In addition, the outermost unit wheel of the unit wheel group is characterized in that it comprises a binding member for mutually binding with the neighboring unit wheel in accordance with the operation member and the wire in the main support shaft.

In addition, the binding member includes a plurality of recesses formed recessed to correspond to the unit wheel adjacent to the side of the unit wheel; A binding plate member inserted into each of the insertion grooves according to the unfolding operation of the wire to bind the unit wheel groups to each other; And it is characterized in that it comprises a pressure spring for pushing the binding plate in the separating operation.

In addition, the hub is formed with a guide slot to slide the main support shaft in the outward direction to release the binding of the binding member, the guide slot is inserted into the hinge shaft coupled to the main support shaft, The inlet of the guide slot is characterized in that the blocking member for preventing the separation of the hinge shaft is screwed.

As described above, the folding wheel according to the present invention divides the wheel into a plurality of unit wheels. As the unit wheel is divided and rotated as the support shaft consisting of the inner and outer shafts is unfolded, the width and the volume of the space are reduced, and the wheel size can be easily adjusted because the unit wheel is expanded and returned to its original state as the support shaft is contracted.

In addition, the present invention is connected to the unit wheels by using a wire provided with a adjustable length in the support shaft to pull or push the unit wheels can be integrated to prevent the unit wheels from being separated even if the wheels are integrated by integrating a plurality of unit wheels have.

In addition, the present invention is provided with a connection member that is connected to each other receivable inside the unit wheel can be easily divided or bound of the unit wheel.

In addition, the present invention is to separate or combine the unit wheel groups by expanding or contracting the support shaft consisting of a plurality of inner and outer shafts formed on the outer periphery around the hub as an umbrella stand, a plurality of unit wheel groups fixed support shaft when contracted Rotating stand can reduce the wheel size.

1 is a circular state diagram of a folding wheel according to an embodiment of the present invention.
Figure 2 is a folding state of the folding wheel according to an embodiment of the present invention.
3 is an enlarged view of the upper side of FIG. 2.
Figure 4 is an exploded perspective view of the unit wheel according to an embodiment of the present invention.
5 is a view showing a rotation and coupling state of the connection member according to an embodiment of the present invention.
Figure 6 is a plan sectional view of the operating state of the operating member according to an embodiment of the present invention.
7 is a cross-sectional view of the operating state of the operating member according to an embodiment of the present invention.
Figure 8 is a side view of the operating state of the operating member according to an embodiment of the present invention.
9 is an operating state of the locking unit according to an embodiment of the present invention.
10 is a circular state diagram of a folding wheel according to another embodiment of the present invention.
Figure 11 is a folding state of the folding wheel according to another embodiment of the present invention.
12 is a standing state of the folding wheel according to another embodiment of the present invention.
Figure 13 is an exploded perspective view of the unit wheel and the binding member according to another embodiment of the present invention.
Figure 14 is an exploded perspective view of the restraint cap and hub according to another embodiment of the present invention.
15 is an enlarged view of an operating member according to another embodiment of the present invention.
Figure 16 is a release state of the binding member according to another embodiment of the present invention.

Hereinafter, a folding wheel according to an embodiment of the present invention will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is a circular state diagram of a folding wheel according to an embodiment of the present invention, Figure 2 is a folding state diagram of a folding wheel according to an embodiment of the present invention.

Figure 3 is an enlarged state diagram of the upper side of Figure 2, Figure 4 is an exploded perspective view of the unit wheel according to an embodiment of the present invention, Figure 5 is a view showing a rotating member and the coupling state according to an embodiment of the present invention.

6 is a plan sectional view of an operating state of the operating member according to an embodiment of the present invention, Figure 7 is a cutaway view of the operating state of the operating member according to an embodiment of the present invention, Figure 8 is an embodiment of the present invention 9 is a side view of an operating state of the operating member according to the present invention, and FIG. 9 is an operating state diagram of the locking unit according to an exemplary embodiment of the present disclosure.

1 to 9, the folding wheel according to an embodiment of the present invention, the unit wheel 10, the main support shaft 20, the connecting member 30, the auxiliary support shaft 40, the wire 50 ) And an operating member 60.

The unit wheel 10 is formed by dividing the wheel into a plurality of pieces.

Since the unit wheel 10 is formed by dividing the circular wheel for each area, it is preferable that the unit wheel 10 is formed evenly for each unit wheel 10, but in some cases, the size may be configured differently.

In this embodiment, the unit wheel 10 is shown to be formed by dividing evenly.

The main support shaft 20 is composed of the inner shaft 24 and the outer shaft 22 fixed to the selected unit wheel 10, respectively, varying the connection form of the unit wheel 10 according to the length adjustment, the inner shaft 24 ) Is provided with a rotating shaft 28.

The inner shaft 24 is configured to be stored in a sliding manner in the hollow portion of the outer shaft 22.

Between the outer shaft 22 and the inner shaft 24 is provided with a binding pin 100 is fitted into the through-hole 102 of the inner shaft 24 to prevent separation.

The binding pin 100 may be pulled out of the through-hole 102 by the user to pull out the protruding portion to the outside, and then slide the outer shaft 22 in the inner shaft 24.

The rotary shafts 26 are configured to penetrate both side walls of the inner shaft 24 and to be supported by bearings, respectively.

On both sides of the outer shaft 22, one side of the outer shaft 22 is opened and cut in a U shape to prevent the outer shaft 22 from hitting the rotating shaft 26 fixed to the inner shaft 24 when the inner shaft 24 is received. The guide space 23 is provided.

Since the guide space portion 23 is formed only in a part of the outer shaft 22, it does not weaken the supporting strength.

The connecting member 30 interconnects the unit wheels 10.

The inner part of the unit wheel 10 may be made of a rim, and the outer part of the unit wheel 10 may be made of a tire. Of course, the inside and the outside of the unit wheel 10 may be integrally made of the same material.

The connecting members 29 and 30 may be configured such that both ends are hinged, or only one end is hinged, and the other end is receivably connected.

The connection members 29 and 30 are preferably configured to be connected to the inside of the unit wheel 10.

For example, a connection member connecting the unit wheel 10 fixed directly to the outer shaft 22 and the inner shaft 24 and neighboring unit wheels 10 connected to both sides of the unit wheel 10, respectively. 29 is configured so that both ends are hinged respectively. In this case, it is preferable that both sides of the unit wheel 10 are formed.

One end of the other connecting member 30 is pivotally connected to one of the unit wheels 10, and the other end of the other connecting member 30 is supported to be housed in a receiving groove 32 formed in another neighboring unit wheel 10. .

The receiving grooves 32 are provided at both sides with respect to the cross section of the unit wheel 10, respectively.

As shown in FIG. 5, the connecting member 30 is formed of a curved plate, and when the unit wheels 10 are closely coupled to each other in a circular shape, the connecting member 30 hinged to one of the unit wheels 10 is fixed. Since the other end of the) is inserted into the receiving groove 32 of the other unit wheel 10 adjacent to the receiving groove 32 is supported on the wall serves to restrain each other so that the circular wheel is rotated without shaking.

On the contrary, when the coupling of the unit wheels 10 is released, the other end of the connecting member 30 hinged to one unit wheel 10 is separated from the receiving groove 32 of the other unit wheel 10 neighboring. The unit wheels 10 are separated from each other. At this time, the connection member 30 is preferably not completely separated from the receiving groove (32).

In the case where the circular wheels, which are coupled to the unit wheels 10, are used as wheels for electric bicycles, the gears 15 of the unit wheels 10 are formed on both sides of the unit wheels 10, and the gears of the electric motors may be engaged. .

The tooth 15 is shown only in FIG. 4 and in the remaining drawings, the tooth 15 is omitted so that the other configuration can be clearly understood.

The auxiliary support shaft 40 is hinged to one end of the inner wheel 10, the other end is fixed to the outer shaft 22 is adjusted in length to support the circular wheel load.

Auxiliary support shaft 40 is provided on both sides of the main support shaft 20 on both sides of the link axis 42, 43 and the link shaft 42, 43, which is folded or unfolded in multiple stages, based on the axle center. Is formed symmetrically, and is provided on each side at a predetermined interval around the main support shaft 20 includes a cylinder shaft 44 which is variable in length of the rod 48 with respect to the body 46.

In the present embodiment, the link shafts 42 and 43 are shown to be folded in three stages, but it is possible to configure a variety of folding stages as necessary.

The link shafts 42 and 43 may be formed in a rotating folding method or a sliding folding method depending on a position installed based on the main support shaft 20.

Rotating folding type link shaft 42 is configured to rotate by the hinge axis, the slide folding type link shaft 43 is configured to vary in length as the hinge axis moves along the guide slot.

Cylinder shaft 44 may be applied to the three-stage cylinder to the portion where the shrinkage is much. Two-stage cylinders can be applied to areas of low shrinkage. Of course, the cylinder shaft 44 can be applied in various configurations depending on the length.

The wire 50 is connected to the unit wheel 10 through the main support shaft 20 and is pulled out when the main support shaft 20 contracts to maintain the circular wheel shape by combining the unit wheels 10.

The wire 50 is interconnected between the unit wheels 10 through the connection hole 56 formed in the unit wheel 10, both ends of the wire 50 is the main support shaft 20 in the state of winding the wheel once It is provided in each.

The wire 50 is applied to a bicycle brake, etc., and applies a steel wire made by twisting the core wire, so that the wire 50 can be well bent while being pulled or pushed to have sufficient self rigidity.

The connection hole 56 is disposed between the connection member 30, and a plurality of fixing rollers 58 are provided in the connection hole 56 to support the movement of the wire 50.

The wire 50 includes a main wire 52 providing a main tension and an auxiliary wire 54 providing an auxiliary tension in addition to the main wire 52.

The connection hole 56 may be configured so that the main wire 52 and the auxiliary wire 54 are moved at the same time, or two may be moved separately from each other. In the present embodiment, the connection hole 56 has a state of one.

The operation member 60 additionally pulls the wire 50 by rotation after contraction of the main support shaft 20 to restrain the unit wheels 10 from being separated.

6 to 8, the operation member 60 includes a moving groove 62, a moving roller 64, a lever member 66, and an auxiliary coupling part 70.

The moving groove 62 is recessed on both sides of the inner shaft 24.

The moving groove 62 is shown in a hemispherical shape on both sides of the inner shaft 24, but may be configured to have a variety of shapes as needed.

The moving roller 64 is fixed to the inner surface of the outer shaft 22 so that the main wire 52 fixed to the moving groove 62 is pulled while rotating the outer shaft 22.

When the moving roller 64 contracts and moves the outer shaft 22 to the inner shaft 24, the moving roller 64 pulls the main wire 52 by half the moving distance of the outer shaft 22.

For example, if the outer shaft 22 is moved 20cm, the main wire 52 is fixed to the inner shaft 24 is pulled only 10cm, which is exactly half in consideration of the moving distance. This is the same as the pulley principle.

The lever member 66 is disposed adjacent to the moving roller 64, hinged to the outer shaft 22 and pulled by the rotation of the rotating roller 68 to further restrain the circular unit wheel. If the rotation roller 68 moves by the movement distance L, the end of the auxiliary wire 54 is pulled about half the movement distance L like the main wire 52 because it is fixed to the inner shaft 24. .

At this time, since the rotating roller 68 formed at the end of the lever member 66 directly fixes the auxiliary wire 54, the auxiliary wire 54 can be configured to secure the pulling distance as it is, if necessary. Accordingly, it is possible to appropriately adjust the amount of pulling of the auxiliary wire 54 according to the rotation of the lever member 66 by configuring the configuration of the lever member 66 in various ways.

The lever member 66 does not penetrate the center of the outer shaft 22 and is hinged to both sides only.

The auxiliary coupling part 70 is operated by the auxiliary wire 54 which is fixed to the outside of the outer shaft 22 by the rotation of the rotation roller 68 fixed to the end of the lever member 66 and is tensioned. (10) Add them together.

3 to 5, the auxiliary coupling part 70 is rotatably installed in the installation groove part 72 and the installation groove part 72 formed inside the unit wheel 10 and covered by the cover 84. The fitting lever 74 and the fitting lever formed with a roller 76 on which the auxiliary wire 54 is caught at one end and a fitting protrusion 78 inserted into the fitting groove 80 of the unit wheel 10 adjacent to the other end thereof. 74, an elastic spring 82 for providing an elastic force.

The fitting groove 80 constrains the left and right flow and movement of the unit wheel 10 in the center direction while the fitting protrusion 78 is fitted.

The elastic spring 82 provides a contracting elastic force and thus, when the tension of the auxiliary wire 54 is not provided, the fitting lever 74 rotates counterclockwise.

In this way, the auxiliary wire 54 is pulled down to the connecting hole 56 as the main wire 52 by the roller 76 fixed to the end by the rotation of the lever member 66.

The rollers 76 of the fitting lever 74 are rotated in a clockwise direction so that the fitting protrusions 78 of the fitting lever 74 are in contact with each other while being inserted into the fitting grooves 80 of the neighboring unit wheel 10. It is to bind the unit wheels (10) to each other.

The connection hole 56 is formed as a small hole in the inlet portion of the unit wheel 10, but is formed in a predetermined large space therein so as not to limit the operation of the main wire 52 and the auxiliary wire 54, installation It is comprised so that it may communicate with the groove part 72.

Referring to FIG. 9, the folding wheel of the present invention locks between the cylinder shaft 44 and the outer shaft 22 of the main support shaft 20 to maintain the circular state of the unit wheel 10. ).

The locking portion 90 is fixed to the outer portion of the outer shaft 22, the pull wire 92 is connected to the cylinder shaft 44, the rod 48 of the cylinder shaft 44 so that the pull wire 92 is wound The end of the winding roller 94, the pulling wire 92 is installed in the fixed, rotatably installed on the rod 48, the locking lever 96 and the locking lever 96 for pulling or releasing the pulling wire 92 It includes a hook hook 98 is formed in the body 46 so as to restrain the body 46 to the rod 48.

In this way, in the state in which the outer shaft 22 is contracted to the inner shaft 24, after the operation of the operating member 60, the locking lever 96 of the locking portion 90 is hinged to rotate the locking formed on the body 46 When the hook 98 is hooked, the pull wire 92 is pulled by the winding roller 94 and pulls in the direction in which the outer shaft 22 is contracted, so that the contracted state of the main support shaft 20 can be further firmly maintained. have.

10 is a circular state diagram of a folding wheel according to another embodiment of the present invention, Figure 11 is a folding state diagram of a folding wheel according to another embodiment of the present invention, Figure 12 is a folding wheel according to another embodiment of the present invention It is a state figure built.

Figure 13 is an exploded perspective view of the unit wheel and the binding member according to another embodiment of the present invention, Figure 14 is an exploded perspective view of the restraint cap and the hub according to another embodiment of the present invention, Figure 15 is another embodiment of the present invention Figure 16 is an enlarged view of the operation member, Figure 16 is a release state diagram of the binding member according to another embodiment of the present invention.

10 to 16, the folding wheel according to another embodiment of the present invention, the unit wheel 110, the main support shaft 120, the connecting member 130, the wire 50 and the operating member 160 It is made, including.

In another embodiment of the present invention will be replaced with the above description for the same configuration as the embodiment.

The unit wheel 110 is formed by dividing the wheel into a plurality.

Since the unit wheel 110 is formed by dividing the circular wheel for each region, it is preferable that the unit wheel 110 is formed evenly for each unit wheel 10, but in some cases, the size may be configured differently.

In this embodiment, the unit wheel 110 is formed by dividing evenly.

The main support shaft 120 gathers the unit wheels 110 as a set number of unit wheel group 111, one end is connected to each of the links 122 connected to the plurality of unit wheels 110 located in the center, the other end of the hub 126 is connected.

In this embodiment, the unit wheel group 111 is a state in which four are installed on each side of the two main support shaft 120 is shown in two, the unit wheel group 111 is both sides of the main support shaft 120 as necessary. The number of unit wheels 110 may be provided in various ways.

Although the main support shaft 120 is formed to form four, it is shown a state arranged at intervals of 90 °. It is possible to vary the installation angle and installation number which are arrange | positioned as needed.

The main support shaft 120 is supported by the unit wheel 110 is arranged on both sides by the contraction movement in the center direction of the operating member 160, respectively.

The main support shaft 120 is rotated to the side of the hub 126 in a state in which the unit wheels 110 are arranged and supported on both sides, the wheel rotation shaft is provided in the center of the hub 126.

Referring to FIG. 14, the hub 126 is rotatably installed with the restriction cap 128 to open or restrain the side hinge rotation of the main support shaft 120 through the opening groove 129.

After matching the guide slot 180 of the hub 126 and the opening groove 129 of the restraint cap 128, and rotating the four main support shafts 120 to stand vertically, the size of the circular wheel is greatly reduced, Provide convenience.

And, if you want to reduce the side of the wheel, after turning the four main support shafts 120 that were standing vertically to the original state, by rotating the restraint cap 128 in the hub 126 open groove 129 Since the guide slot 180 and the offset are disposed to prevent the main support shaft 120 is rotated.

The main support shaft 120 has a spring 124 that pushes the operation member 160 outwardly.

The connection member 130 is coupled between the rims to connect the unit wheels 110 of the unit wheel groups 111.

As in the embodiment, the connection member 130 may be configured such that both ends are hinged, or only one end is hinged, and the other end is receivably connected.

The wire 150 extends or retracts the unit wheels 110 of the unit wheel groups 110 by pulling or pushing each other.

The wire 150 operates as a sliding movement in the main support shaft 120 of the operation member 160, and applies the principle that the umbrella rod is unfolded or retracted.

The wire 150 is applied to a bicycle brake and the like, and applies a steel wire made by twisting a plurality of core wires, so that the wire 150 has a characteristic of being well bent while pulling or pushing.

The wire 150 is configured to move along the connection hole 156 formed inside the unit wheel 110.

The connection hole 156 is disposed between the binding plate member 174 of the binding member 170, and a plurality of fixing rollers 158 supporting the movement of the wire 150 are provided in the connection hole 156.

The operation member 160 is slidably coupled to the outside of the main support shaft 120 to operate the wire 150.

The operation member 160 includes an elastic locking protrusion 162 that is caught upon contraction by pressing the spring 124, and the elastic locking protrusion 162 is provided on the main support shaft 120 to operate.

The elastic locking projection 162 is formed in an arc shape so that the entry is guided and hooked when the entry is completed. The elastic locking protrusion 162 may be configured to interlock with an operation button (not shown).

The outermost unit wheel 110 of the unit wheel group 111 is a binding member that binds to the neighboring unit wheel 110 in accordance with the operation member 160 and the wire 150 in the main support shaft 120 ( 170).

Referring to FIGS. 11 and 13, the binding member 170 has a plurality of recessed insertion grooves 172 and wires 150 to correspond to the unit wheels 110 adjacent to the side of the unit wheels 110. According to the insertion groove 172, respectively, the binding plate member 174 for binding the unit wheel group 111 to each other and a pressing spring 176 for pushing the binding plate member 174 during the separating operation.

Referring to FIG. 14, the hub 126 is formed with a guide slot 180 to slidably move the main support shaft 120 outward to release the binding of the binding member 170.

In the guide slot 180, a hinge shaft coupled to the main support shaft is inserted and moved.

The blocking member 184 is screwed to the inlet of the guide slot 180 to prevent the hinge shaft 182 from being separated.

Thus, looking at the operation of the folding wheel according to another embodiment, in the state shown in Figure 11 the elastic engaging projection to walk the operation member 160 to unfold the operation member 160 with respect to the main support shaft 120 When 162 is pressed directly or by pressing an operation button (not shown), the operation member 160 is pushed radially to the wire 150 while being released under the elastic force of the spring 124 while the engagement is released.

In addition, the unit wheels 110 of the unit wheel groups 111 are spread out to both sides with respect to the two links 122 connected to the main support shaft 120 under tension of the wire 150 to be unfolded.

Subsequently, two binding plate members 174 of the binding member 170 provided at the outermost unit wheel 110 of the unit wheel groups 111 and coupled to the wire 150 are connected to the outer spring in the opposite direction. The unit wheel groups 111 are firmly bound to each other while being inserted into the insertion grooves 172 of the neighboring unit wheels 110 while being cross-moved by the elastic force.

On the other hand, if you want to fold the wheel, as shown in Figure 16, pulling the main support shaft 120 to the outside while the hinge shaft 182 is moved along the guide slot 180 of the hub 126 Since the main support shaft 120 moves in the circumferential direction, the binding plate member 174 of the binding member 170 is separated from the insertion groove 172 of the neighboring unit wheel 110.

Subsequently, when the operation member 160 is pulled toward the center of the hub 126 along the main support shaft 120 while overcoming the elastic force of the spring 124, the elastic locking protrusion 162 returns to its original state while receiving the elastic force of the spring. Hang the operating member (160).

At this time, the wire 150 is also pulled in accordance with the movement of the operating member 160, the unit wheel 110 of the unit wheel group 111 is folded by the link 122 and the connecting member 130 as shown in FIG. After maintaining, by rotating the restraint cap 128 to match the opening of the opening groove 129 and the guide slot 180, the vertical support of the main support shaft 120 to reduce the space.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

10,110: unit wheel 111: unit wheel group
20,120: Main support shaft 22: External shaft
24: internal shaft 29, 30, 130: connecting member
40: auxiliary support shaft 42,43: link shaft
44: cylinder shaft 50, 150: wire
52: main wire 54: auxiliary wire
56,156: Connecting hole 58,158: Fixed roller
60, 160: operating member 64: moving roller
66: lever member 70: auxiliary coupling portion
74: fitting lever 78: fitting protrusion
80: fitting groove 82: elastic spring
90: locking portion 92: pulling wire
94: winding roller 96: locking lever
100: binding pin 126: hub
128: restraint cap 129: open groove
170: binding member 172: insertion groove
174: binding plate 176: pressure spring
180; Guide Slot 182: Hinge Shaft

Claims (17)

A unit wheel made up of a plurality of wheels;
A main support shaft consisting of an inner shaft and an outer shaft fixed to each of the selected unit wheels to vary the connection form of the unit wheels according to length adjustment;
A connection member interconnecting the unit wheels;
An auxiliary support shaft whose one end is hinged inside the unit wheel and whose other end is hinged to the outer shaft and whose length is adjusted to support a circular wheel load;
A wire connected to the unit wheel through the main support shaft to be pulled out when the main support shaft contracts to couple the unit wheels to maintain a circular wheel shape; And
And an actuating member which additionally pulls the wire by rotation after the main support shaft contraction and restrains the unit wheels from being separated.
The method of claim 1,
The unit wheel is folding wheels, characterized in that formed by dividing evenly.
The method of claim 1,
The connecting member is hinged to any one of the unit wheels, and is supported to be received in the receiving groove formed in the other unit wheel neighboring,
The receiving groove is a folding wheel, characterized in that each provided on both sides based on the cross section of the unit wheel.
The method of claim 1,
Protruding teeth are formed on both side surfaces of the unit wheel,
Folding wheel, characterized in that between the outer shaft and the inner shaft having a binding pin that is inserted into the through hole of the inner shaft to prevent separation.
The method of claim 1,
The auxiliary support shaft is provided on both sides with respect to the main support shaft, respectively, the link shaft folded or unfolded in a multi-stage rotation or sliding manner; And
Folding wheels, characterized in that the link shaft is formed symmetrically with respect to the center of the axle, the cylinder shaft is provided on both sides at predetermined intervals around the main support shaft to vary the length of the rod with respect to the body.
The method of claim 1,
The wires are interconnected between the unit wheels through connection holes formed in the unit wheels, and both ends of the wires are provided on the main support shafts in a state where the wheels are wound once,
The connecting hole is disposed between the connecting member, the folding wheel, characterized in that a plurality of fixed rollers for supporting the movement of the wire is provided in the connecting hole.
The method according to claim 1 or 6,
The wire is main wire to provide a main tension; And
A folding wheel, characterized in that it comprises an auxiliary wire for providing an auxiliary tension with the main wire.
The method of claim 7, wherein the operating member
A moving groove recessed in both sides of an inner shaft of the main support shaft;
A moving roller fixed to an inner surface of the outer shaft so that the main wires fixed to the moving grooves are pulled while rotating the outer shaft; And
And a lever member disposed adjacent to the moving roller and hinged to the outer shaft to pull the auxiliary wire by the rotation of the rotating roller to further restrain the circular unit wheels.
The method of claim 8,
It is provided with an auxiliary coupling for operating by the auxiliary wire tensioned by the rotation of the lever member to further bind the unit wheels,
The auxiliary coupling portion is an installation groove formed in the interior of the unit wheel;
A fitting lever rotatably installed in the installation groove, and having a fitting protrusion inserted into a fitting groove of a unit wheel adjacent to the roller and the other end of which the auxiliary wire is caught at one end; And
Folding wheel, characterized in that it comprises an elastic spring to provide an elastic force to the fitting lever.
6. The method of claim 5,
Locking unit for restraining the circular shape of the unit wheel by restraining the cylinder shaft and the outer shaft of the main support shaft mutually,
The locking portion is connected to the cylinder shaft is fixed to the outer portion to the outer shaft;
A winding roller installed on a rod of a cylinder shaft so that the pulling wire is wound and supported;
An end of the pulling wire is fixed and is rotatably installed on the rod to pull or release the pulling wire; And
And a locking hook formed on the body to lock the locking lever to fix the body to the rod.
A unit wheel made up of a plurality of wheels;
A main support shaft having one end connected to a link connected to a unit wheel located at a center by collecting the unit wheels as a set number of unit wheel groups, and the other end connected to a hub;
A connection member coupled to interconnect the unit wheels of the unit wheel groups;
A wire that extends or retracts the unit wheels of the unit wheel groups by mutually pulling or pushing each other;
And an actuating member slidably coupled to an outer side of the main support shaft to actuate the wire.
12. The method of claim 11,
The main support shaft is the unit wheel is supported on both sides by the contraction movement in the center direction of the operating member, respectively
The main support shaft is a folding wheel, characterized in that rotated to the side of the hub in the state in which the unit wheels are respectively supported on both sides.
13. The method of claim 12,
The hub is rotatably installed to the restriction cap to open or restrain the side hinge rotation of the main support shaft through the opening groove,
The main support shaft is a folding wheel, characterized in that it has a spring for pushing the operation member to the outside to operate.
The method of claim 13,
The actuating member is provided with an elastic locking projection to be caught when the spring is pressed by the contraction, the elastic locking projection is provided on the main support shaft folding wheels, characterized in that the locking operation.
12. The method of claim 11,
The outer wheel of the unit wheel group is a folding wheel, characterized in that provided in the main support shaft and the binding member for mutually engaging with the neighboring unit wheel in accordance with the operation member and the wire linkage.
The method of claim 15, wherein the binding member
A plurality of recesses formed in the recess to correspond to the unit wheels adjacent to the side of the unit wheels;
A binding plate member inserted into each of the insertion grooves according to the unfolding operation of the wire to bind the unit wheel groups to each other; And
Folding wheel comprising a pressing spring for pushing the binding plate during the separation operation.
16. The method of claim 15,
The hub is formed with a guide slot to slide the main support shaft in the outward direction to release the binding of the binding member,
The guide slot is moved by inserting the hinge shaft coupled to the main support shaft,
Folding wheel, characterized in that the blocking member is screwed to the entrance of the guide slot to prevent the departure of the hinge shaft.

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