KR101626778B1 - Baby wagon with improved ease of use - Google Patents

Abstract

A baby wagon with improved user convenience is provided to solve problems of: having inconvenience of a driving operation as an existing baby wagon cannot be changed for different uses; being not fixated stably due to distortion in a frame in a folding operation of being folded or unfolded in the horizontal direction; having inconvenience during transportation by the shaking of a lateral frame; having the risk of an accident such as jamming of fingers; and shortening the service life as a rotary shaft is worn by repetitive folding operations. The baby wagon with improved user convenience comprises a main body frame, a wheel unit, a sheet unit, and a canopy and is able to: set a cart mode and a stroller mode in accordance with purposes when a user is going out with a baby or moving a load; facilitate the driving of the wagon by reducing a rotation radius by using a height difference between a front wheel and a rear wheel depending on the center of gravity based on a middle wheel; reduce the fatigue of a guardian by reducing a power loss of the guardian; and have a stable folding structure by preventing a distortion of a folding operation.

Description

BABY WAGON WITH IMPROVED EASE OF USE [0002]

The present invention can be used in various ways according to the use of the child wagon, and it is possible to facilitate the operation by reducing the turning radius using the difference in height between the front wheel and the rear wheel with respect to the center wheel according to the center of gravity of the wagon, The present invention relates to a baby wagon having a stable folding structure and improved usability.

The wagon-type baby wagon, which has a storage space more than a stroller and has the advantage of being able to go out with two or three infants alone, is rapidly becoming a universalized word-of-mouth for young children, As the demand increases, various kinds of baby wagons are on the market.

However, the existing infant wagon has a large radius of rotation due to the long length of the battlefield, which is difficult to control when the child is burned or loaded with heavy objects, and the arm of the protector has a lot of force. When the infant is physically mature There is a problem that the use of the wagon is lost and stored in a warehouse without being used.

In addition, due to the characteristics of a bulky wagon, it is stored in a folded state when not in use, but is not stably fixed due to a twist in the frame during folding or unfolding in forward and backward directions, There is a risk of inconveniences such as inconvenience and pinching of the fingers, and there is a problem that the rotating shaft is worn out due to the repeated frame twisting phenomenon in the folding operation, thereby shortening the life span.

In order to solve the above problems, according to the present invention, it is possible to set the cart mode and the stroller mode according to the use, such as loading and unloading a child wagon, By using the height difference of the wheels, it is possible to reduce the turning radius to facilitate the operation of the wagon, reduce the power loss of the protector to reduce the fatigue of the protector, and prevent the frame from twisting in the folding operation, And to provide a baby wagon having improved convenience.

In order to achieve the above object, the present invention provides a wig for a child,

A folding body frame, a wheel portion, a seat portion, and a canopy portion,

The foldable body frame

Shaped front frame standing upright on the front and rear ends and supporting the foldable main frame, and the upright left and right cylindrical frames are raised and lowered in the form of cylinders and the height is variable, A main frame made up of a main frame,

A frame having two frames formed in the forward and backward directions is symmetrically coupled axially by two frames horizontally laid in a forward and backward direction and supporting the bottom of the frame, A support frame folded or unfolded symmetrically according to the rising and falling of the central axis,

A side frame which is coupled to the left and right sides of the main frame so as to be coupled to each other in such a way that the triangular frame and the inverted triangular frame having the same height and formed symmetrically cross each other about the rotation pin ,

A front handle attached to the front main frame through a handle fixing clip, and a rotation control button coupled to a side of a rotating shaft formed at the left and right upper ends to control a step angle of the front angle adjusting handle Frame,

A rear control handle is coupled to a rear side of the main frame and is coupled to a rear main frame through a handle fixing clip. Frame is achieved.

As described above, according to the present invention, it is possible to set the cart mode and the stroller mode by detaching the middle wheel from the child wagon in accordance with the use such as loading and unloading the child wagon, Accordingly, it is possible to reduce the turning radius by using the small height difference through the elastic springs inside the front and rear wheels, thereby facilitating the operation of the wagon, reducing the power loss of the protector and reducing the fatigue of the protector, There is a good effect of having a stable folding structure by preventing the phenomenon.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an overall shape of a baby wagon having improved usability according to the present invention;
Fig. 2 is an exploded perspective view of the components of a baby wagon according to the present invention in an exploded view, Fig.
FIG. 3 is a partially enlarged view of a main frame, a base frame, and a side frame according to the present invention,
FIG. 4 is an exploded perspective view of the foldable main frame according to the present invention,
Fig. 5 shows an embodiment in which the basket frame according to the present invention is rotated in the up-and-down direction. Fig. 5 is a partially enlarged view showing an enlarged view of a portion fitted in the handle-
FIG. 6 shows components of the side frame according to the present invention, and shows an enlarged view of an engaging portion of an upper joint frame combined with a first inclined frame and a second inclined frame, An enlarged view of a portion of the lower joint frame,
Fig. 7 shows a first pinion gear and a second pinion gear engaged with a rack gear of an upper joint frame according to the present invention,
FIG. 8 is a diagram showing an embodiment in which the brake pad is pulled in the left-right direction by pulling the brake cable pulled on the handle brake formed on the angle adjusting handle according to the present invention,
FIG. 9 is an exploded perspective view of components of the main driving unit according to the present invention,
10 is a view showing a state in which an elastic spring is embedded in an upper shock absorbing frame according to the present invention, a lower end impact absorbing frame is inserted in a lower end direction, and an engagement pin is moved up and down within an engagement pin moving groove by an elastic spring ≪ / RTI >
11 is a side view showing a state in which the brake pad is separated in the left and right direction due to the pulling of the brake cable according to the present invention and a frictional force is generated in close contact with the friction control groove,
12 shows components of the front wheel part according to the present invention and also shows an embodiment in which the front wheel part is inserted and separated in the lower end direction of the lower three-
13 is a view showing an embodiment in which the front wheel rotation fixing device according to the present invention is vertically moved and rotationally coupled to and separated from the lower end of the lower support fixture,
14 shows components of the front wheel according to the present invention and also shows an embodiment in which the elastic spring incorporated in the impact absorbing frame is stretched and contracted,
15 is a perspective view showing the components of the canopy according to the present invention,
Fig. 16 is a view showing a state in which the canopy frame according to the present invention is folded,
17 shows a side view of a wagon according to the present invention, and an embodiment showing a state in which a middle wheel, a front wheel, and a rear wheel are in contact with the ground,
18 is a side view showing a state where an object is placed inside the wagon according to the present invention. As the center of gravity is located at the front, the front wheel and the middle wheel are in contact with the ground, In the embodiment shown in Fig.
FIG. 19 is a side view showing a folded body frame and a wheel part folded in a folded form according to the present invention. FIG.
20 is a side view showing a side surface of a wagon in which a middle wheel is detached according to the present invention,
Fig. 21 is a view showing a state in which the wagon according to the present invention is used in a baby mode,
22 shows a state in which the wagon according to the present invention is used in a cart mode, and a state in which the front and rear wheel attachment / detachment pins of the rotation fixing device are detached from the rotation stop insertion groove and rotated in the horizontal direction Also in one embodiment.
23 shows a state in which the wagon according to the present invention is used in a stroller mode, and in the embodiment in which the front wheel part and the rear wheel part are moved in the forward direction by the engagement of the detachment pin and the rotation stop insertion groove of the rotation fixing device .

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing a general shape of a child wagon having improved usability according to the present invention. The foldable body frame 100, the wheel part 200, the seat part 300, the canopy 400, .

First, the foldable main body frame 100 according to the present invention will be described.

The foldable main body frame 100 is formed in a rectangular parallelepiped shape so as to support the entire body of the baby wagon 1 and to change its shape by folding or spreading the center portion with respect to the longitudinal direction.

As shown in FIG. 2, the main frame 110, the support frame 120, the side frame 130, the front handle frame 140, and the rear handle frame 150 are formed.

First, the main frame 110 according to the present invention will be described.

The main frame 110 supports the foldable main frame in a frame shape erected upright at the front and rear ends of the main frame 110. The upright left and right cylindrical frames are raised and lowered in the form of a cylinder, And comprises a variable front main frame and a rear main frame.

In the folding mode, the main frame 110 according to the present invention is raised in accordance with the user's needs, in accordance with the rotation of the inverted triangular frame coupled to the upper two-axis support fixture 111 in the upper direction, in the inner cylindrical frame 110a-1 In the wagon-use mode, the inner cylindrical frame 110a-1 is lowered in accordance with the rotation of the reverse osmosis frame coupled to the upper two-shaft support fixture 111 in the lower direction of the outer cylindrical frame 110a-2, So that it is inserted into the outer cylindrical frame 110a-2.

As shown in FIG. 3, the upper two-axis support fixture 111, the lower three-axis support fixture 112, the handle fixing clip 113, and the canopy fixing pole 114 are formed.

The upper biaxial support fixture 111 is symmetrically fixed to the left and right ends of the upper end of the inner cylindrical frame of the main frame formed in the forward and backward directions, The fixing hole 111a is formed and is engaged with the upper and lower ends of the inverted triangular frame 132 to facilitate rotation.

The upper two-axis support fixture 111 penetrates the lower end of the pole insertion hole 111a so that the canopy fixing pole 114 can be inserted into the main frame 110, A pole inserting fixed thread 114a formed at an upper end of the canopy fixing pole 114 through a threaded hole of the canopy 114 and a pole projection fixing thread 114b formed at a lower end.

When the canopy 400 is detached, the pole fixing fixation hole 111a is fixed to the upper end of the main frame by fixing the pole protrusion fixing screw 114b located at the lower end of the canopy fixing pole when the canopy 400 is installed, The pole inserting set screw 114a located at the upper end of the pole is fixed so that the canopy fixed pole is inserted and fixed in the main frame.

Accordingly, the canopy fixing pole 114 can not be fixed when it is stored and moved in the folding state of the infant wagon, so that it is possible to prevent the damage of the frame and the risk of injury of the user.

The lower triaxial support fixture 112 is fixedly coupled to left and right ends of the bottom of the outer cylindrical frame of the main frame formed in the front and rear directions in a 'T' shape, and is connected to the lower end of the triangular- And a wheel coupling pin insertion groove is formed at one side of the lower end surface to support the front wheel portion and the rear wheel portion, respectively.

This is because the push type detachment button 112a is formed at the front center of the lower three-axis holding fixture located at the front and the rear center of the lower three-axis holding fixture at the rear side, The rotation stop insertion groove 112b is formed.

The depressing / releasing button 112a of the lower three-axis supporting fixture 112 located at the front side has a coupling pin groove 221a-1 of a cylindrical wheel coupling pin 221a whose inside is located at the upper end of the front wheel fixing frame, So that the left and right front wheel portions are respectively detached.

At this time, when the push type depressing button is pressed, the inner pin of the protruding type detachable button hooked to the coupling pin groove 221a-1 is separated to enable the wheel coupling pin 221a to be disengaged, and when the push type detachment button is released, So that the front wheel can be fixed.

The depressing / releasing button 112a of the lower three-axis supporting fixture 112 located at the rear side has an engaging pin groove 231a-1 of a cylindrical wheel engaging pin 231a whose inside is located at the upper end of the rear wheel fixing frame, So that the left and right rear wheel portions are respectively detached.

At this time, pressing the push type detachment button releases the inner pin of the protruding type detachable button that is hooked to the coupling pin groove 231a-1, thereby enabling the wheel coupling pin 231a to be disengaged. When the push type detachment button is released, So that the rear wheel portion can be fixed.

The handle fixing clip 113 covers and secures one side of the lower end of the front handle frame 140 and the rear handle frame 150 and one side of the lower end of the main frame 110. The handle fixing clip 113 includes a front handle frame, It is possible to easily control even if the protector alone moves by minimizing the loss of power when the protector grips the handle frame and moves or changes direction by the pushing or pulling force, and unnecessary power loss can be reduced.

The handle fastening clips 113 formed on the upper left and right sides of the front face are provided with fixing pin insertion holes 113a formed in the inner side of the guide rails for transferring the fixing angle of the basket frame 115 on both inner sides thereof, The basket frame receiving bar 113c is formed.

5, when the basket fixing pin 115a is inserted into the fixing pin insertion hole 113a at the rear end of the guide rail formed diagonally as shown in FIG. 5, the basket frame 115 is inserted into the main frame The basket frame 143 is supported by the basket frame support bar 113c at the lower end of the basket frame to be in the basket use mode. When the basket fixing pin 115a is inserted into the fixing pin insertion hole at the upper end of the guide rail, The basket is folded up while standing upright to be horizontal with the main frame.

The basket frame 115 is vertically rotated with respect to the basket fixing pin 115a to match the angle of the guide rail formed along the outer periphery of the fixing pin insertion hole 113a of the handle fixing clip 113, 115 are pulled or pushed in, the basket fixing pin 115a is moved along the guide rail 113b to be able to be attached and detached.

The canopy fixing pole 114 is connected to the lower end of the pole fixing part 413 and is upright and is located on the left and right sides of the upper support frame in the front and rear direction and has a circular rod shape A pole protrusion fixing screw 114b formed at the lower end of the threaded bore of the pole insertion fixing hole 111a formed at the upper end of the upper two shaft support fixture 111 inserted in the upper direction of the main frame 110, And a pole inserting fixed thread 114a is selectively fixed.

When the canopy is installed, the pole protrusion fixing screw 114b at the lower end is fixed to the pole inserting hole 111a at the upper inner surface of the upper two-shaft supporting fixture 111, and in the canopy separation and folding mode, The pole inserting fixed thread 114a is fixed to the pole inserting hole 111a on the upper inner surface of the upper two-shaft supporting fixture 111. [

The canopy fixing pole 114 can be stably fixed in the canopy separation mode and the folding mode in which the canopy fixing pole 114 is inserted into the upright canopy as well as the upper direction of the main frame 110, Prevents the damage such as warp caused by protruding canopy fixed pole, user's safety accident, and prevents it from being lost and lost.

Second, the support frame 120 according to the present invention will be described.

The supporting frame 120 is a striped combined frame that forms a lower end face and supports the lower ends of the two frames that are laid horizontally in the forward and backward directions. The frame ends are symmetrically formed in the front and rear directions, And is symmetrically folded or unfolded according to the upward and downward movement of the lower center shaft axially coupled to the base frame 121 and the support frame 122 .

Here, the receiving front frame 121 forms a front surface of the receiving frame and is formed in a horizontal striped shape, and the left and right rear ends of the receiving frame are coupled to the receiving center axis.

Here, the back frame 122 is formed as a rear-side surface of the back frame and is formed as a horizontally laid-out stripe-like shape, and the left and right front ends thereof are engaged with the back frame.

Here, the support center shaft 123 is symmetrically located on the right and left sides of the lower center of the foldable main frame, the support frame is axially coupled to the support frame in the front-rear direction, and the center shaft hook 123a, Is coupled to and supported by the ring groove 132c-2 in the inner side of the lower articulation frame.

In this mode, the front and rear frames are formed horizontally with respect to the center axis in the use mode of the infant wagon, thereby forming a space in which the seat portion 400 can be unfolded. In the folding mode, Is folded into a symmetrical shape of the 'V' shape to reduce the volume.

Third, the side frame 130 according to the present invention will be described.

The side frames 130 are coupled to the left and right sides of the main frame, respectively. The side frames 130 are formed by symmetrically forming a triangular frame 131 and an inverted triangular frame 132, And are joined in a shape crossing the fins.

It consists of a triangular frame 131 and an inverted triangular frame 132.

The triangular-shaped frame 131 is a rod-like frame, and includes a first inclined frame 131a inclined frontward in the lower end direction and coupled with three axes of a center axis and both end rotation axes;

A second inclined frame 131b formed symmetrically with the first inclined frame and inclined rearward in the downward direction and coupled to the three axes of the center axis and the both-end rotation axis;

And an upper joint frame 131c which is formed in an elliptical shape and supports the upper rotary shaft of the first inclined frame and the upper inclined frame in the horizontal direction before and after the upper inclined frame and the upper inclined frame and connects them to each other.

Here, the upper joint frame 131c is formed so as to face the lower end in the horizontal direction on one side of the upper side of the inner side, and includes a first pinion gear 131a-1 formed around the rear end of the first oblique frame, The rack gear 131c-1 is engaged with the second pinion gear 131b-1 formed around the front end of the pinion gear to change the rotational motion of the pinion gear in the forward and backward directions into a linear motion.

The upper joint frame 131c according to the present invention stably supports the first pinion gear and the second pinion gear through the rack gear and is rotated at the same speed and interval so that the first inclined frame 131a and the second inclined frame 131b So that the second inclined frame 131b is symmetrically rotated at the same speed and angle.

Here, when the foldable main body frame 100 is unfolded, the first pinion gear 131a-1 engaged with the rack gear 131c-1 and the second pinion gear 131b-1 rotate in opposite directions to each other, The first pinion gear 131a-1 and the second pinion gear 131b-1 are opposed to each other when the foldable main body frame 100 is folded, It rotates in the viewing direction, and the shaft interval is narrowed, and it is raised while maintaining the front and rear direction horizontal.

Thus, in the folding operation, the first inclined frame and the second inclined frame are rotated at the same speed and spacing, and the upper joint frame has a stable folding structure that always keeps horizontal. Thus, It is possible to prevent accidents such as pinching of the fingers due to shaking of the frame when the wagon is transported and to prevent the rotating shaft from being worn down due to repetitive shaking to shorten the service life.

The reverse ovoid-shaped frame 132 is a bar-shaped frame, and includes a third inclined frame 132a which is inclined frontward in the upper direction and engaged with the upper end of the front main frame, and which is coupled with the three axes of the central axis and the both-

A fourth inclined frame 132b symmetrically formed with the third inclined frame, the rear inclined in the upper direction to be coupled with the upper end of the rear main frame, and coupled with the three axes of the center axis and both end rotation axes;

And a lower joint frame 132c which is formed in an elliptical shape and connects the lower rotary shaft of the third inclined frame and the lower rotary shaft of the fourth inclined frame to each other in the horizontal direction.

Here, the lower joint frame 132c is formed so as to face the upper end of the lower side of the inner side in the horizontal direction, and includes a third pinion gear 132a-1 formed along the rear end of the third inclined frame 132a, And a rack gear 132c-1 that engages with the fourth pinion gear formed around the rotational axis of the pinion gears 132b-1 and 132b-1 and changes the rotational motion of the pinion gear in the forward and backward directions into a linear motion.

The lower joint frame 132c according to the present invention stably supports the third pinion gear and the fourth pinion gear through the rack gear and is rotated at the same speed and interval so that the third inclined frame 132a So that the fourth oblique frame 132b is symmetrically rotated at the same speed and angle.

Here, when the foldable main body frame 100 is unfolded, the third pinion gear 132a-1 and the fourth pinion gear 132b-1 engaged with the rack gear 132c-1 rotate in opposite directions to each other, The third pinion gear 132a-1 and the fourth pinion gear 132b-1 are opposed to each other when the foldable main body frame 100 is folded, It is rotated in the viewing direction, and the shaft interval is narrowed, and it is lowered while maintaining the front and rear direction horizontal.

This prevents the frame from being twisted, prevents accidents such as pinching of the fingers due to shaking of the frame when the wagon is transported, worn the rotating shaft due to repetitive shaking, Can be prevented from being shortened.

Fourth, the front handle frame 140 according to the present invention will be described.

The front handle frame 140 is erected on the left and right sides of the front face of the main frame and is coupled to the front main frame 110a through a handle fixing clip 113. A rotation control button And controls the angle of the front angle adjusting handle 142 in steps.

In this case, the front angle adjusting handle 142 is adjustable in steps of a button-controlled rotation, and the handle angle can be set according to the user's selection by pressing the left and right front handle rotation button 141.

At this time, the front handle is horizontally aligned with the front support frame and can be rotated in 10 steps from the folded 0 ° to the 180 ° upright in the opposite direction.

It rotates at an angle of 18 ° when it rotates in one step, and it can minimize the force acting on the arm by varying the angle according to the user's height, arm height, uphill and downhill, dragging or pushing forward In folding mode, the front handle and the front support frame are leveled to minimize volume.

In addition, when the front handle angle is set to be vertical when pushing the front handle frame, the gap between the protector's foot and the baby wagon is maximized, thereby preventing a kickback phenomenon in which the forward foot hits the infant wagon, Comfortable walking is possible, and the ride comfort of the infant also increases.

Fifth, the rear handle frame 150 according to the present invention will be described.

The rear handle frame 150 is erected on the left and right sides of the rear surface of the main frame and is coupled to the rear main frame 110b through a handle fixing clip 113. A rotation control button And controls the angle of the rear angle adjusting handle 152 in steps.

In this case, the rear angle adjusting handle 152 can be adjusted in a stepwise manner by a button adjustable rotation, and the handle angle can be set according to the user's selection while pressing the left and right rear handle rotation buttons.

At this time, the rear handle is horizontally aligned with the rear support frame and can be rotated in ten steps from 0 ° in the folded state to 180 ° in the upright direction in the opposite direction.

It rotates at an angle of 18 ° when it rotates in one step, and it can minimize the force acting on the arm by varying the angle according to the user's height, arm height, uphill and downhill, dragging or pushing forward In folding mode, the rear handle and rear support frame are leveled to minimize volume.

In addition, when the rear handle frame is pushed and moved, when the angle of the rear handle is set to be vertical, the gap between the protector's foot and the infant wagon is maximized to prevent a kickback phenomenon in which the forward foot hits the infant wagon, Comfortable walking is possible, and the ride comfort of the infant also increases.

The rear handle frame 150 of the present invention is connected to the left and right symmetrically formed brake pads by a brake cable and is formed with a handle brake 153 for transmitting frictional force to the middle wheel by adjusting the interval of the brake pads through pulling and releasing movements .

Here, when the handle is pulled, a pair of brake pads symmetrically connected to the brake cable are pulled in the left and right direction, and the grip brake 153 is closely contacted with the friction control groove 215b to suppress the rotational force of the middle wheel A pair of brake pads symmetrically connected to the brake cable are restored and the gap is narrowed in the left and right directions, and the frictional control The groove 215b is spaced apart so that the middle wheel is rotated.

At this time, when the handle brake 153 is pulled in the direction of the rear handle frame, the handle brake lock button 153a formed on the upper outer surface of the rotary shaft of the handle brake rises and the brake pad is operated, The knob brake 153 is returned to its original position and the brake pad 214a is separated from the friction control groove so that the rotation of the middle wheel 215 It is done freely.

This allows the guardian to control the brakes of the infant wagon with his or her hand. When the vehicle is moving at a high speed from the ground or when passing through a slope, it pulls the handle brake to gradually reduce the speed to improve the ride comfort of the infant on the wagon, Compared with the seated foot brake, it can respond quickly and prevent safety accidents.

Next, the wheel part 200 according to the present invention will be described.

The wheel part 200 is fastened to the lower end of the foldable main frame in the front-rear direction to move the baby wagon.

As shown in FIG. 17, this includes a middle drive part 210, a front wheel part 220, and a rear wheel part 230.

First, the middle-wheel drive unit 210 according to the present invention will be described.

The middle wheel driving unit 210 is coupled to the lower end of the center of the supporting frame, and strikes the ground, and stably supports the lower end of the child wagon and provides driving force for moving and stopping the child wagon.

This is constituted by an upper shock absorber frame 211, a lower shock absorber frame 212, a middle wheel fixing frame 213, a brake pad 214 and a middle wheel 215.

The upper shock absorber frame 211 is an elliptical frame in the form of a hollow groove which is symmetrically coupled to the lower end of the support center shaft formed on the left and right sides of the support frame and hollow inside the lower end surface, An engaging pin moving groove 211a through which the pin can be moved in the up and down direction is formed and an elastic spring 211b is inserted into the lower end face.

The lower impact-absorbing frame 212 is inserted into the inner groove in the lower end direction of the impact-absorbing frame 211 by an elliptic frame formed to have the same circumference as the circumference of the inner surface of the upper shock- An engaging pin 212a which is fixed by supporting the lower end of the elastic spring 211b and is inserted into the engaging pin moving groove 211a at the front and rear of the left and right side surfaces is formed.

10, the upper end impact-absorbing frame 211 and the lower end impact-absorbing frame 212 are maximally spaced apart from each other by the elastic force of the elastic spring, as shown in FIG. 10, , The height of the elastic spring inserted inside increases in proportion to the external impact or the internal weight of the wagon.

The middle wheel fixing frame 213 is inserted into the inner groove 211c of the impact absorbing frame 211 symmetrically formed on the left and right sides to balance and support the left and right directions.

The brake pads 214 are symmetrically coupled to the disc-shaped outer surface of the brake pads 214 in a semicircular strip-shaped brake pad 214a connected with a handle brake 153 and a brake cable 214c. And the wheel coupling shaft 214b is protruded.

The brake pads 214 according to the present invention are coupled to the lower end of the lower shock absorber frame to transmit frictional force to the middle wheel by adjusting the intervals of the brake pads with the brake handles.

At this time, when the handle brake 153 is pulled out, the gap of the semicircular belt-shaped brake pads formed symmetrically by the brake cable is widened and the circumferential surface is brought into close contact with the friction control groove 215b of the middle wheel, When the handle brake 153 is returned to its original position, the spacing of the symmetrically formed semicircular belt-shaped brake pads is narrowed, and the circumferential surface is separated from the friction control groove 215b of the middle wheel so that the middle wheel is smoothly driven.

The middle wheel 215 is located on the outer side of the brake pads and has an inner hole inserted into the middle wheel coupling shaft and is always in contact with the ground to support the baby wagon. And a friction control groove 215b.

Here, the wheel release button 215a is formed at the center of the outer side rotation shaft and engages with the engagement jaw of the middle wheel coupling shaft 214b in the form of a click-and-hold button inserted and protruded inward.

Accordingly, the middle wheel 215 having a large protruding portion and a large volume in the folding mode can be separated from the brake pad portion 214, thereby reducing the volume and improving the space utilization of the baby wagon 1 and facilitating storage thereof .

Here, the friction control groove 215b is a circular groove protruding in the inner side direction, and a surface formed along the inner circumference is closely contacted with or spaced from the brake pad to control the driving force of the middle wheel.

Second, the front wheel unit 220 according to the present invention will be described.

The front wheel part 220 is coupled to the lower left and right ends of the front main frame to support the front lower end of the wagon, selectively sets rotation and fixing in the horizontal direction, and absorbs external impact in the wagon front direction .

This is constituted by a front wheel fixing frame 221, a shock absorbing frame 222 and a front wheel 223.

The front wheel fixing frame 221 is cylindrical in shape symmetrically coupled to the lower ends of the three-axis supporting fixtures in the front direction, and has a cylindrical wheel coupling pin 221a having a coupling pin groove 221a-1 formed at the center of the upper end thereof, And the front wheel rotation fixing device 221b coupled to the front wheel rotation fixing device 221b is formed to be rotatable in the vertical direction by the side rotation shaft and the rotation stop insertion groove 112b is formed in the inner center of the front wheel rotation fixing device 221b And a detachment pin 221b-1 to be engaged is formed.

The insertion / removal pin 221b-1 is inserted into and detached from the rotation stop insertion groove 112b formed on the lower end surface of the lower three-axis support fixture 112 to control the direction of the front wheel in the horizontal direction.

At this time, when the deflection pin 221b-1 is inserted into the rotation stop insertion groove 112b, the front wheel rotation fixing device 221b is coupled to the lower three-axis support fixture to block the horizontal rotation of the front wheel fixing frame 221 The front wheel rotation fixing device 221b is separated from the lower three-shaft support fixture when the front wheel 223 is rotated only in the straight direction and the detachment pin 221b-1 is detached from the rotation stop insertion groove 112b, (223) is rotated 360 degrees in the horizontal direction.

In this way, the cart mode 200b and the stroller mode 200c can be set by controlling the horizontal rotation of the front wheel 223.

The shock absorbing frame 222 is coupled to the lower end of the front wheel fixing frame 221 and has a rotary shaft insertion hole 222a for insertion of a rotary shaft 223a formed on the left and right sides of the rotary shaft of the front wheel 223, And an elastic spring 222b for absorbing an external impact is built in the upper end inside of the rotary shaft insertion slot.

Here, the rotary shaft insertion elongated hole 222a moves the rotary shaft 223a in the vertical direction through the reaction of the elastic spring 222b against the external impact applied to the front surface of the wagon when the wagon internal load or the uneven ground moves, It improves the ride comfort of infants.

Through this, when the middle wheel and the rear wheel are lowered by the elastic spring due to the impact generated through the road or the slope which is not smooth surface, it comes into contact with the ground temporarily to assist the movement and assist the movement.

In addition, the elastic spring rises and falls according to the center of gravity of the inner load of the wagon with respect to the middle wheel 215, thereby controlling the fine ascending and descending of the front wheel.

Specifically, as shown in FIG. 14, when the center of gravity is located at the rear with respect to the center wheel, the rotational axis of the front wheel moves to the lower end of the long hole as shown on the left, And when the center of gravity is located at the front, the rotational axis of the front wheel moves in the upper direction of the long hole as shown on the right side, and the elastic spring is kept in the state of being contracted in the upper direction.

17 and 18, when the load is not loaded in the wagon, the front wheel is brought into close contact with the ground, and when the center of gravity of the wagon is shifted toward the front direction of the wagon, the rotational axis of the front wheel moves in the upper direction of the long hole , And the rear wheel on the opposite side is raised and separated from the ground by a fine height (h).

By this, the wheels of one of the front wheel and the rear wheel can be raised slightly to be separated from the ground to reduce the turning radius in half, thereby facilitating the rotation control and allowing the protector to easily control the rotation.

When the wagon 1 is positioned so as to be horizontal on the ground, the front wheel 223 is rotated in the direction of rotation of the front wheel 223, And is supported horizontally with the lower end surfaces of the wheels 215 and the rear wheels 233 and serves to assist the movement of the front of the wagon.

Third, the rear wheel unit 230 according to the present invention will be described.

The rear wheel portion 230 is coupled to the lower left and right ends of the rear main frame to support the rear lower end of the wagon, selectively set the rotation and fixing in the horizontal direction, and absorb the external impact in the rear direction of the wagon .

It consists of a rear wheel fixed frame 231, a shock absorbing frame 232, and a rear wheel 233.

The rear wheel fixing frame 221 has a cylindrical wheel coupling pin 231a formed in a cylindrical shape symmetrically coupled to the lower end of the three-axis supporting fixture in the rear direction and having a coupling pin groove 231a-1 formed at the center of the upper surface thereof, And the rear wheel rotation fixing device 231b coupled to the rear wheel rotation fixing device 231b is formed to be rotatable in the vertical direction by the side rotation shaft and the rotation stop insertion groove 112b is formed in the inner center of the rear wheel rotation fixing device 231b And a detachment pin 231b-1 to be engaged is formed.

This allows the detachment pin 231b-1 to be inserted into and detached from the rotation stop insertion groove 112b formed in the lower end surface of the lower three-axis support fixture 112 to control the direction of the rear wheel in the horizontal direction.

At this time, when the deflection pin 231b-1 is inserted into the rotation stop insertion groove 112b, the rear wheel rotation fixing device 221b is coupled to the lower three-axis support fixture to block the horizontal rotation of the rear wheel fixing frame 231 The rear wheel rotation fixing device 231b is separated from the lower three-shaft support fixture when the rear wheel 223 is rotated only in a straight direction and the detachment pin 231b-1 is detached from the rotation stop insertion groove 112b, (223) is rotated 360 degrees in the horizontal direction.

Thus, the cart mode 200b and the stroller mode 200c can be set by controlling the horizontal rotation of the rear wheel 233.

The shock absorbing frame 232 is coupled to the lower end of the front wheel fixing frame 231 and has a rotary shaft insertion hole 232a for insertion of a rotary shaft 233a formed on the left and right sides of the rotary shaft of the rear wheel 223, An elastic spring 232b for absorbing an external impact is built in the upper end inside of the rotary shaft insertion slot.

In this case, the rotary shaft insertion elongated hole 232a moves the rotary shaft 233a in the vertical direction through the reaction of the elastic spring 232b with the external impact applied to the front surface of the wagon when the wagon internal load or the uneven ground moves, It improves the ride comfort of infants.

Through this, when the middle wheel and the rear wheel are lowered by the elastic spring due to the impact generated through the road or the slope which is not smooth surface, it comes into contact with the ground temporarily to assist the movement and assist the movement.

In addition, the elastic spring rises and falls according to the center of gravity of the inner load of the wagon with reference to the middle wheel 215, thereby controlling the fine ascending and descending of the rear wheel.

Specifically, as shown in FIG. 14, when the center of gravity is located rearward with respect to the center wheel, the rotational axis of the rear wheel moves to the lower end of the long hole as shown on the left, When the center of gravity is located at the front, the rotation axis of the rear wheel moves in the upper direction of the long hole as shown on the right side, and the elastic spring is maintained in the state of being contracted in the upper direction.

17 and 18, when the load is not loaded inside the wagon, the rear wheel is brought into close contact with the ground surface, and when the center of gravity of the rear wheel moves toward the rear of the wagon, the rotational axis of the rear wheel moves in the upper direction of the long hole , And the front wheel, which is the opposite side, is raised and separated from the ground by a fine height (h).

By this, the wheels of one of the front wheel and the rear wheel can be raised slightly to be separated from the ground to reduce the turning radius in half, thereby facilitating the rotation control and allowing the protector to easily control the rotation.

When the wagon 1 is positioned so as to be horizontal on the ground, the rear wheel 233 is rotated in the direction of the center of the vehicle, The wheels 215 and the front wheels 223 are supported horizontally to support the movement of the rear side of the wagon.

In the present invention, the symmetrically formed front wheel and rear wheel are raised and lowered along the center of gravity of the inside of the wagon, thereby reducing the distance between the axes of the wagon for the child by half, facilitating the change of direction, The lower end surfaces of the middle wheel, the front wheel and the rear wheel come into contact with the ground when the inside of the wagon 1 is positioned horizontally with respect to the ground, , If the center of gravity is formed on either the front or rear side, the wheel opposite to the center of gravity will be raised by 1 to 2 cm from the ground.

At this time, when the height of the symmetrically formed front wheel and rear wheel is located at a height of 1 cm or less than the height of the middle wheel, the middle wheel driving portion, the front wheel portion and the rear wheel portion are raised and lowered by the elastic spring, , The number of times the front wheel part and the rear wheel part touch the ground at the same time increases and the advantage of reducing the power loss of the protector is easily faded due to the reduction of the axial distance to half. When the front and rear wheel parts are raised and lowered in a seesaw shape and one side touches the ground, a difference of more than 4cm, which is twice as high as the opposite side, occurs, and even if the impact is mitigated by the elastic spring, the rattling is detected, Occurs.

The wheel part according to the present invention is configured by selectively forming one mode of the wagon mode 200a, the cart mode 200b, and the stroller mode 200c according to the fixed form of the wheel.

In the child wagon mode 200a, a middle wheel is coupled to the lower center of the foldable main body frame, and the front wheel and the rear wheel are symmetrically coupled with the center wheel as a center.

As shown in FIG. 21, when the center of gravity is inclined forward or backward with respect to the center of gravity with respect to the center wheel, the wheels in the opposite direction to the center of gravity are raised finely and the distance between the axes is reduced to half, Thereby lowering the energy consumption of the arm.

The cart mode 200b is detachably mounted on the lower end of the folding main frame frame and is supported by the front wheels and the rear wheels so that the detachable pins 221b-1 of the front wheel rotation fixing device and the detachment pins 231b-1 are detached from the rotary device insertion groove 112b, so that four wheels constituting the front wheel and the rear wheel can be linearly rotated and freely switched in the horizontal direction.

The cart mode 200b is supported by the front wheels and the rear wheels by detaching the middle wheel at the lower center of the foldable main frame frame and the detachable pin 221b-1 of the front wheel rotation lock device is detached from the rotating device insertion groove 112b And the detachment pin 231b-1 of the rear wheel rotation fixing device is engaged with the rotation device insertion groove 112b so that the front wheel is rotated in the linear direction and the horizontal direction and the rear wheel is rotated in the linear direction only .

As shown in FIG. 22, the front wheel is free to rotate in the horizontal direction as well as in the linear direction, so that it is easy to change the direction. The rear wheel supports the front wheel in the moving direction, Enabling multi-directional operation control.

As a result, it is possible to facilitate control in a space where the flow population is large or the direction is changed frequently like a shopping mall, and the setting can be changed according to the position of the guardian.

That is, when the protector is positioned in front of the wagon, the rear wheel is rotated in the horizontal direction, the front wheel is set in such a way that the horizontal rotation is blocked, and when the protector is positioned behind the wagon, And the rear wheel is set to be blocked from rotating in the horizontal direction.

The stroller mode 200c is supported by the front wheels and the rear wheels by detaching the middle wheel at the lower center of the foldable main frame and is supported by the detachable pins 221b-1 of the front wheel rotation lock device, The four wheels constituting the front wheel and the rear wheel are rotated in the linear direction only by inserting them into the rotary device insertion groove 112b so that they are not rotated in the horizontal direction.

As shown in FIG. 23, the front wheel and the rear wheel are rotated in a linear direction in the front-rear direction so that the protector can perform comfortable driving control when moving a long distance in a straight direction such as forward and backward.

Thus, even if there is an imbalance in the force between the left and right sides, such as a pushing control from the side, it is possible to move in the linear direction without turning the direction so that the protector can easily control the operation in the linear direction.

Next, the seat portion 300 according to the present invention will be described.

The seat portion 300 is fixedly coupled to the inner periphery and the lower end of the foldable main body frame in a rectangular basket shape by a snap button, a buckle, and a Velcro, thereby providing a space in which the infant can comfortably rest in the infant wagon .

Here, the thickness of the seat portion is 5 mm to 10 mm, and a folding crest is formed at a folded portion according to the folding mode of the foldable body frame, so that folding is performed, and a folding ring is formed in the center of the inner surface of the seat portion.

When the thickness of the seat portion is less than 5 mm, the seat portion is difficult to perform the cushioning function properly. Therefore, the shake and impact are directly transmitted to the infant during the movement. If the thickness is 10 mm or more, the folding body frame is not smoothly folded, A problem arises.

A five-point safety belt is formed so as to face the inside and outside of the seat according to the present invention so that both shoulders, waist and both thighs of the infant are not shaken.

The 5-point combination seat belt covers all the upper body, allowing infants and children of various ages from infants to children who have difficulty keeping up.

Next, the canopy 400 according to the present invention will be described.

The canopy 400 has a rectangular side surface, a roof is formed in a quadrangular pyramid shape, and is coupled to an upper end of the foldable main frame to be detachably attached. The canopy 400 protects infants from the sun, rain, wind, It consists of a canopy frame 410 and a canopy sheet 420.

The canopy frame 410 is formed in such a shape that a central axis frame 411 of 'X' shape is horizontally laid at the center of the upper part, and a canopy supporting rod 412 is axially coupled to a central axis frame extending in four directions, And a pole fixing part 413 which can be fixed to the upper end of the canopy fixing pole is formed at an end of each canopy supporting rod.

The upper end of the canopy support rod 412 is axially coupled to the respective ends of the central shaft frame 411 and the lower end of the canopy support shaft 412 is axially coupled with one end of the upper end of the pole fixing portion, It is important to maintain the shape of

The pole fixing part 413 is axially coupled between the lower end of the canopy supporting rod 412 and the upper end of the canopy fixing pole 114 to axially rotate and support the pole fixing part 413, And a canopy fixed pole 114 is inserted and axially coupled to the lower end of the canopy frame 410 to serve as a joint of the canopy frame 410.

15, the canopy frame 410 is radially expanded in the canopy frame 410 with the center shaft frame 411 as a reference, and the canopy frame 410 is installed in the canopy frame 410, The canopy frame is uprighted by the pole fixing portion 413 with the canopy fixing pole inserted into the end of the canopy support rod to keep the shape of the upper end and in the folding state of the canopy portion 400, The canopy supporting rod 412 is erected in the lower direction with respect to the central axis frame 411 and the canopy fixing pole 114 is erected in the reverse direction of the upper end and the horizontal So as to minimize the volume of the canopy portion 400.

The canopy seat 420 is fixed to the upper end of the canopy frame 410 in the outer direction so as to cover the top of the infant wagon so as not to be exposed to the outside, So that the Velcro tape can be stably fixed.

Hereinafter, a specific operation process of the baby wagon with improved usability according to the present invention will be described.

First, the middle wheel coupling shaft is inserted and coupled to the shaft insertion groove of the separately stored middle wheel, and the gap between the front main frame and the rear main frame of the folding mode wagon is expanded.

In this case, the inner cylindrical frame of the main frame descends and is inserted into the outer cylindrical frame. In the folding mode, the support frame having the " V "shape is horizontally unfolded and the triangular- And it unfolds.

Next, the rotation control button formed on the left and right sides of the front handle frame and the rear handle frame is pressed and the angle of the handle frame is adjusted to set a handle angle suitable for the extension of the protector, and then the rotation control button is restored and fixed .

Next, the canopy fixing pole is installed on the upper part of the main frame, and the canopy is fitted and fitted.

Next, a 5-point combination seat belt should be used to keep the baby's shoulders, waist, and both thighs from shaking.

Next, the baby wagon is moved and controlled.

At this time, when the protector pulls forward the baby wagon from the front or moves forward from the rear, the rear direction is lowered with respect to the middle wheel, the middle wheel and the rear wheel touch the ground and the front wheel is driven away from the ground, It is easy to change the direction and the power loss of the protector can be reduced.

On the contrary, when the protector pushes the baby wagon forward or moves backward from the backward direction, the frontal direction is lowered with respect to the middle wheel, the middle wheel and the front wheel touch the ground, and the rear wheel is driven away from the ground, It can be reduced by half, which makes it easy to turn and reduce the power loss of the protector.

In addition, elastic springs are embedded in the middle-wheel drive section, the front wheel section, and the rear wheel section, respectively, so as to mitigate the impact, thereby improving the riding comfort of the infants.

At this time, when the inclined surface is moved, the brake pad is brought into close contact with or spaced from the friction control groove through pulling and loosening of the handle brake, thereby making it possible to control the speed to be reduced.

Finally, after using the infant wagon, move the infant to a safe place, detach the canopy, insert and fix the canopy fixed pole into the main frame, pull the one-touch folding ring formed at the center of the seat, After pressing the wheel release button, remove the coupled wheel on the left and right sides and store.

100: foldable body frame 110: main frame
120: supporting frame 130: side frame
140: front handle frame 150: rear handle frame
151: Handle brake 200:
210: a middle drive part 211: an upper shock absorbing frame
212: lower shock absorbing frame 213: middle wheel fixing frame
214: Brake pad portion 215: Middle wheel
220: front wheel portion 230: rear wheel portion
300: seat portion 400: canopy

Claims (5)

A baby wagon which is composed of a foldable body frame 100, a wheel part 200, a seat part 300, and a canopy part 400 and serves as a moving means of a baby,
The foldable main body frame 100
Shaped front frame standing upright on the front and rear ends and supporting the foldable main frame, and the upright left and right cylindrical frames are raised and lowered in the form of cylinders and the height is variable, A main frame 110 made of a main frame,
A frame having two frames formed in the forward and backward directions is symmetrically coupled axially by two frames horizontally laid in a forward and backward direction and supporting the bottom of the frame, A support frame 120 which is folded or unfolded symmetrically according to the rising and falling of the central axis,
A triangular frame 131 and an inverted triangular frame 132, which are symmetrically formed on the left and right sides of the main frame, respectively, A side frame 130 coupled to the frame 130,
And a rotation control button is coupled to a side of a rotation shaft formed at the left and right upper ends of the front main frame 110a, A front handle frame 140 for controlling a step angle of the front handle frame 140,
And a rotation control button is coupled to a side of a rotation shaft formed at the left and right upper ends of the main frame to connect the rear angle adjustment handle 152 And a rear handle frame 150 for controlling a step angle of the rear handle frame 150,
The side frame (130)
A first oblique frame 131a having a rod-like frame and inclined frontward in the lower end direction and coupled to the three axes of the center axis and both end rotation axes;
A second inclined frame 131b formed symmetrically with the first inclined frame and inclined rearward in the downward direction and coupled to the three axes of the center axis and the both-end rotation axis;
A triangular frame 131 formed in an elliptical shape and coupled with an upper joint frame 131c for supporting the upper rotary shaft of the first bevel frame and the second bevel frame in the horizontal direction before and after the upper frame,
A third oblique frame 132a which is inclined forward in the upper direction by the bar-shaped frame and engaged with the upper end of the front main frame, and which is coupled with the three axes of the central axis and the both-end rotational axis;
A fourth inclined frame 132b symmetrically formed with the third inclined frame, the rear inclined in the upper direction to be coupled with the upper end of the rear main frame, and coupled with the three axes of the center axis and both end rotation axes;
And an inverted triangular frame 132 formed in an elliptical shape and coupled with a lower joint frame 132c connecting the lower inclination frame of the fourth inclined frame and the lower inclined frame 132c in the horizontal direction before and after the use In a baby wagon having improved convenience,
The upper joint frame 131c
A first pinion gear formed to face the lower end in the horizontal direction on one side of the upper side of the inner side surface and formed along the rear end axis of the first tilted frame and a second pinion gear formed along the rotation axis of the second tilted frame, And a rack gear for changing the rotational motion of the gear in the up-and-down direction to the rectilinear movement in the forward-backward direction.
delete delete The wheel assembly (200) according to claim 1,
A center wheel is coupled to a lower central portion of the folding main body frame, and a front wheel wheel and a rear wheel wheel are symmetrically coupled with a center wheel as a center. When the center wheel is inclined forward or rearward with respect to the center of gravity, A wagon mode 200a for allowing the user to easily control the operation by reducing the distance between axes by half,
The middle wheel at the lower center of the main body of the folding main frame is detached and supported by the front wheels and the rear wheels so that the detachment pin 221b-1 of the front wheel rotation fixing device is detached from the rotation device insertion groove 112b, A cart mode 200b in which the detachable pin 231b-1 is coupled to the rotator insertion slot 112b so that the front wheel is rotated in the linear direction and in the horizontal direction and the rear wheel is rotated only in the linear direction,
The detachment pin 221b-1 of the front wheel rotation fixing device and the detachment pin 231b-1 of the rear wheel rotation fixing device are rotatably supported by the front wheels and the rear wheels, respectively, A stroller mode 200c inserted into the device insertion groove 112b and fixed so as not to be rotated horizontally so that four wheels constituting the front wheel and the rear wheel are rotated only in a linear direction, Wherein the wiggle is formed of a wig.
The wheel assembly (200) according to claim 1,
A cylindrical wheel coupling pin 221a having a coupling pin groove 221a-1 formed at the center of the upper end surface and symmetrically coupled to the lower end of the front-side three-axis support fixture is formed, And a detachable pin 221b-1 formed to be rotatable in the vertical direction by a side rotating shaft and fitted to the center of the inner side of the front wheel rotation fixing device 221b in the rotation stopping insertion groove 112b, A front wheel fixing frame 221 formed with a front wheel,
A rotary shaft insertion elongated hole 222a for inserting a rotary shaft 223a formed on the left and right sides of the rotary shaft of the front wheel 223 is formed at the lower end of the front wheel fixing frame 221, A shock absorbing frame 222 in which an elastic spring 222b for absorbing the impact of the impact absorbing frame 222 is embedded,
And a front wheel (223) for supporting the movement of the front face of the wagon, wherein the left and right rotary shafts are coupled with the rotary shaft insertion holes of the shock absorbing frame and rotated.

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