KR20210146144A - Cart part - Google Patents

Abstract

A cart part is suggested. According to an embodiment of the present invention, the cart part includes a base forming a lower side, and a vertical part combined with the same. The base and the vertical part are combined to be rotatable by a folding part. The folding part includes a plurality of rotary parts placed to be opposed to each other. When an external force is applied to the vertical part, the plurality of rotary parts are rotated relatively such that the vertical part can be rotated toward the base. The folding part includes a control part and a stopper combination part. The control part is pressed to be lifted together with the stopper combination part. When the control part is pushed, a stopper is inserted into or withdrawn from a stopper insertion hole of the stopper combination part. In a state in which the stopper is withdrawn, when an external force is not applied, the control part and the stopper combination part are not randomly lifted. Accordingly, the cart part can be folded and safety can be improved.

Description

Cart part {Cart part}

The present invention relates to a cart part, and more particularly, to a cart part having a structure that can be easily folded while ensuring safety.

A stroller refers to a tool on which an infant or toddler can be seated and driven by a guardian.

The stroller may be provided with a seat portion having a space for a large infant to be seated, and a cart portion provided with wheels for driving the stroller. The guardian can drive the stroller by pressing or pulling the cart after the infant is seated on the seating unit.

A general stroller is formed to have a structure including the seating part and the cart part. In particular, in the case of the seating portion, it is formed large enough that the infant does not feel any discomfort while accommodated therein.

Therefore, in order to store a conventional stroller, it is common that an excessively sized space is required. In order to overcome this, recently, a stroller having a structure in which a seating part and a cart part can be removed has been developed.

However, even in the case of a stroller having a structure in which the seating portion and the cart portion are separated, the cart portion is formed with a lower side provided with wheels, etc., a center side provided with a member supporting the seating portion, and an upper side provided with a handle portion for a protector to grip. That is, there is a limit to reducing the volume of the stroller only by removing the seating portion.

Accordingly, in order to reduce the volume of the cart part, research on the cart part having a structure that can be folded is in progress.

However, the baby stroller has the highest priority to ensure the safety of the infant accommodated therein. Therefore, when the process for reducing the volume of the cart is performed in a single step, an unintentional folding process may be performed due to reasons such as a malfunction of a guardian or a malfunction of the cart. In this case, the safety of the seated infant cannot be guaranteed.

Korean Patent Publication No. 10-2015-0079615 discloses a folding stroller. Specifically, it discloses a foldable stroller having a structure capable of reducing the volume by using a folding mechanism including a plurality of rotating elements.

However, this type of folding stroller has a limitation in that it can be applied only to a skeleton structure having a front wheel assembly, a rear wheel assembly, and a handle bar assembly. That is, there is a step that is difficult to apply to a stroller in which the rotation direction of the structure constituting the skeleton of the stroller is limited.

In addition, the foldable stroller of the above type has to perform complicated steps to fold the stroller. Considering that the above process proceeds after the stroller disclosed in the prior document is separated from the seat, it is difficult for the user's convenience to be sufficiently improved.

Korean Patent Document No. 10-0887216 discloses a triple folding stroller. Specifically, a triple-folding stroller having a structure capable of forming a structure for forming a skeleton into a folded body and maintaining a folded state using a holding mechanism is disclosed.

However, this type of triple-folding stroller has a limitation in that it can be applied only to a stroller having a traditional structure like the above-mentioned prior literature. That is, there is a limit in that it is difficult to apply to a stroller having a structure in which the rotation direction of the structure constituting the skeleton of the stroller is limited.

Moreover, in the prior document, the folding operation is performed in a state in which the seat portion is coupled to the frame of the stroller. Therefore, when the seat portion of the stroller is formed of a hard material such as plastic rather than a soft material such as cloth, it is difficult to apply the structure disclosed in the preceding document.

Korean Patent Publication No. 10-2015-0079615 (2015.07.08.) Korean Patent Document No. 10-08897216 (2009.03.06.)

An object of the present invention is to provide a cart unit having a structure that can solve the above-described problems.

First, it aims to provide a cart unit having a structure that can reduce the space occupied during storage.

In addition, an object of the present invention is to provide a cart unit having a structure in which the process of reducing the space occupied during storage can be performed simply.

In addition, an object of the present invention is to provide a cart portion having a structure that can be stably maintained in a reduced space occupied state.

In addition, an object of the present invention is to provide a cart unit having a structure that can ensure the safety of a seated infant.

In order to achieve the above object, the present invention, the base; a vertical portion coupled to the base and extending upwardly; and a folding part coupled to the base and the vertical part, respectively, wherein the folding part includes: a base coupling part positioned between the vertical part and the base; a first rotating part coupled to a lower surface of the vertical part; a second rotating part coupled to an upper surface of the base coupling part; It provides a cart unit including a rotation pin rotatably coupled to each of the first rotation unit and the second rotation unit.

In addition, the lower surface of the vertical portion of the cart portion and the upper surface of the base coupling portion may be inclined so that the height of the front side and the height of the rear side are different from each other.

In addition, the first rotation part of the cart part is coupled to the lower surface of the vertical part, is formed in a plate shape, and includes a first rotation member having a first through hole through which one side of the rotation pin is penetrated therein. and a second rotation member coupled to the upper surface of the base coupling part and formed in a plate shape, and having a second through hole through which the other side of the rotation pin is penetrated therein. Each surface of the first rotation member and the second rotation member facing each other may be in contact with each other.

In addition, the base coupling part of the cart part is inclined so that the height of the front side of the upper side is low and the height of the rear side is low. It may be accommodated in the rotating part accommodating part.

In addition, when the second rotating member of the cart part is accommodated in the rotating part receiving part, one side of the second rotating member facing the first rotating member and the upper surface of the base coupling part may be located on the same surface have.

In addition, the base coupling part of the cart part may include a wiring accommodating part that is a space extending in the vertical direction therein, and an upper side of the wiring accommodating part may be in communication with the rotating part accommodating part.

In addition, the rotation pin of the cart unit is formed to extend in one direction, and includes a wiring coupling hole formed therein through, and is partially accommodated in the rotation unit accommodating part, and the upper side of the wiring accommodating part is formed with the wiring coupling hole and can be communicated.

In addition, the end portions of both sides from which the rotation pin of the cart part extends are formed to have a larger diameter than the other parts of the rotation pin, and one end of the rotation pin is accommodated in the upper side of the wiring receiving part, and the rotation pin is The other end may be disposed to face the one end of the rotation pin with the first rotation member interposed therebetween.

In addition, between the one end of the rotation pin of the cart part and the second rotation member, a return spring for elastically supporting the one end of the rotation pin is provided, and when the vertical part and the base coupling part are spaced apart, the A rotation pin may be moved toward the vertical portion while pressing the return spring.

In addition, the first rotation unit of the cart unit is positioned between the first rotation member and the second rotation member, and includes a first bracket coupled to the first rotation member, the second rotation unit, the second rotation member a second bracket positioned between the first bracket and the second rotation member, coupled to the second rotation member, and coupled to the first bracket.

In addition, the first bracket and the second bracket of the cart part include a plurality of teeth alternately formed along the outer periphery and a space portion formed between the teeth, the first bracket and the second bracket When the bracket is coupled, the tooth portion of any one of the first bracket and the second bracket may be inserted into the space portion of the other one of the first bracket and the second bracket.

In addition, when the vertical portion of the cart portion and the base coupling portion are spaced apart, the first bracket and the second bracket may be spaced apart.

In addition, the folding part of the cart part is located outside the base coupling part, and includes a manipulation part coupled to the base coupling part so as to be lifted up and down in the vertical direction, and the manipulation part, both the vertical part and the base coupling part It can be moved between a first position coupled to and a second position coupled only to the base coupling portion.

In addition, the folding part of the cart part is coupled to the inside of the operation part and moved together with the operation part, and includes a plurality of stopper coupling parts provided with a plurality of stopper insertion holes spaced apart in the vertical direction and formed with a plurality of stopper insertion holes, the operation part, A stopper including a pressing portion protruding in one direction, wherein the base coupling portion is movably coupled to the operation portion in a direction facing the operation portion and in a direction opposite to the operation portion, and is inserted or drawn out into any one of the plurality of stopper insertion holes may include

In addition, when the operation part of the cart part is located at the first position, the stopper is inserted and coupled to the stopper insertion hole located at a relatively lower side among the plurality of stopper insertion holes, and the operation unit is located at the second position In this case, the stopper may be inserted and coupled to the stopper insertion hole located at a relatively upper side among the plurality of stopper insertion holes.

According to an embodiment of the present invention, the following effects can be achieved.

First, the cart unit includes a folding unit. The folding part is provided between the base and the vertical part, and is coupled to the base and the vertical part, respectively. The folding unit includes a manipulation unit and a stopper coupling unit. The operation part and the stopper coupling part may be coupled to both the base coupling part and the vertical part of the folding part by a user's pressing operation, or may be coupled only to the base coupling part.

The folding unit includes a first rotating unit, a second rotating unit, and a rotation pin rotatably coupled through each rotating unit. In a state where the operation unit and the stopper coupling part are coupled only to the base coupling part, the first rotating part coupled to the vertical part may be rotated relative to the second rotating part coupled to the base coupling part.

Accordingly, the vertical portion may be rotated torsionally with respect to the base coupling portion and folded toward the base. As a result, the space occupied by the cart unit is reduced, and the smart stroller can be easily stored.

In addition, the user may press the manipulation unit to move the manipulation unit and the stopper coupling unit. The manipulation unit is provided with a pressing unit protruding toward the user. The user may move the manipulation unit and the stopper coupling unit by pressing the pressing unit with a foot or hand. In the above process, the user can easily identify the relative height of the manipulation unit with the naked eye.

When the operation part and the stopper coupling part are coupled only to the base coupling part by the pressing operation, the vertical part can be folded by pulling the vertical part upward and then twisting the vertical part.

Accordingly, the user can check the state of the folding part in real time with the naked eye to easily proceed with the process for folding the vertical part.

In addition, the handle portion, which is a portion gripped by the user, is rotatably coupled to the upper side of the vertical portion. When the vertical portion is folded towards the base, the handle portion is positioned adjacent the front side end of the base. The user may rotate the handle portion to fit the handle portion onto the front end of the base.

Accordingly, the vertical portion is arbitrarily rotated and the folded state is not released. Accordingly, the folded state of the vertical portion may be stably maintained.

In addition, in order for the vertical part to rotate, at least two steps must be performed. That is, first, the operation part and the stopper coupling part are pressed to release the vertical part. In addition, in order for the first bracket and the second bracket to be spaced apart from each other, the vertical part must be moved in a direction away from the base coupling part, that is, upward, so that the vertical part can be torsionally rotated.

Therefore, even if a user's erroneous operation or malfunction of the folding part occurs, the folding part is not arbitrarily folded. Accordingly, the safety of the infant seated in the smart stroller may be improved.

1 is a perspective view showing a cart unit according to an embodiment of the present invention.
FIG. 2 is a perspective view illustrating a folding unit provided in the cart unit of FIG. 1 .
3 is an exploded perspective view illustrating the folding part of FIG. 2 .
4 to 8 are partially enlarged perspective views illustrating a process in which the first rotating unit and the second rotating unit provided in the cart of FIG. 1 are rotated.
9 to 12 are side views illustrating a process in which the folding part of the cart part of FIG. 1 is manipulated to fold the vertical part.

Hereinafter, a cart unit according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the following description, in order to clarify the characteristics of the present invention, descriptions of some components may be omitted.

Hereinafter, a cart unit according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the following description, in order to clarify the characteristics of the present invention, descriptions of some components may be omitted.

1. Definition of terms

The term “front side” used in the following description refers to a direction in which the smart stroller 1 travels forward. It will be understood that in the embodiment shown in FIG. 1 , the front side means the left side.

The term "rear side" used in the following description refers to a direction in which the smart stroller 1 travels in reverse. It will be understood that in the embodiment shown in FIG. 1 , the rear side means the right side.

The term "upper side" used in the following description means the direction in which the smart stroller 1 is opposite to the ground. In the embodiment shown in FIG. 1 , the upper side will be understood to mean a direction in which the handle unit 300 is positioned.

The term "downward" used in the following description refers to the direction in which the smart stroller 1 faces the ground. In the embodiment shown in FIG. 1 , the lower side will be understood to mean a direction in which the base 100 is positioned.

The terms "left" and "right" used in the following description are used based on the front side of the smart stroller 1 when viewed from the front.

The term "infant" used in the following description means a child of any age who cannot walk independently or can walk independently even though it is capable. In one embodiment, the infant may be less than 1 year of age.

The term "infant" used in the following description means a child of any age who cannot walk independently, or who can be transported using a vehicle or the like even if it is able to walk independently. In an embodiment, the infant may be between 1 and 6 years of age.

In the following description, "infant" and "infant" will be collectively referred to as "infant".

The term “seat unit” used in the following description refers to an object in which a space in which an infant or infant can be accommodated is formed. In an embodiment, the seat unit may be detachably coupled to a cradle unit provided in a vehicle or a cart unit capable of independently driving.

The term “conductive connection” used in the following description means that one or more members are connected to transmit an electrical signal, power, or the like. The connection may be established in a wired or wireless manner.

2. Description of the configuration of the smart stroller 1 according to an embodiment of the present invention

Referring to FIG. 1 , a smart stroller 1 according to an embodiment of the present invention is shown. In the illustrated embodiment, the cart unit 10 is detachably coupled to the seat unit 20 . Accordingly, the smart stroller 1 according to the embodiment of the present invention can be formed.

The detachable coupling between the cart unit 10 and the seat unit 20 may be formed by an elastic member (not shown) or the like. When the cart unit 10 and the seat unit 20 are coupled, the cart unit 10 and the seat unit 20 may be electrically connected to each other.

The seat portion 20 is formed in a sphere shape with an open upper side as a whole. The lower side and the front side of the seat portion 20 are formed to be rounded.

The upper side of the seat portion 20 is open. An infant may be accommodated in the seat unit 20 through the open portion.

A predetermined space is formed inside the seat portion 20 . A child can be accommodated in the space. The front side and the lower side of the predetermined space may be provided with a cushion formed of a soft material.

In the illustrated embodiment, the seat portion 20 has a left-right symmetrical shape. Accordingly, the user can use the seat portion 20 without considering the left and right directions of the seat portion 20 . Accordingly, the user's convenience can be increased.

The seat unit 20 may be detachably coupled to the cart unit 10 . When the seat unit 20 is coupled to the cart unit 10 , the seat unit 20 may be electrically connected to the cart unit 10 .

This is due to the premise that the seat unit 20 is moved in a state in which the infant is seated. That is, in order to reduce the weight of the seat unit 20 , it is preferable that a battery for energization is provided in the cart unit 10 .

In addition, an air cover unit (not shown) may be detachably coupled to the seat unit 20 . The air cover unit (not shown) may filter the air flowing into the inner space of the seat unit 20 by physical and electrostatic attraction.

Accordingly, air from which fine dust has been removed is introduced into the inner space of the seat unit 20, so that the infant can inhale clean air.

The cart unit 10 may be driven indoors or outdoors. The cart unit 10 may be driven indoors or outdoors by rotating the main wheel 110 and the sub wheel 120 by the force applied to the handle unit 300 by the user.

The seat unit 20 may be detachably coupled to the cart unit 10 . Specifically, the seat part 20 is detachably coupled to the seat support part 210 of the cart part 10 .

A battery (not shown) may be provided in the cart unit 10 . The battery (not shown) supplies power for the cart unit 10 to operate. In an embodiment, the battery (not shown) may be utilized to drive a motor accommodated therein according to a signal applied to the display unit 240 positioned adjacent to the handle unit 300 .

In addition, the battery (not shown) may supply power to the seat unit 20 coupled to the cart unit 10 to be energized. Accordingly, an air cleaning module (not shown) or an LED (not shown) provided in the seat unit 20 may emit light.

In the illustrated embodiment, the cart unit 10 includes a base 100 , a vertical unit 200 , and a handle unit 300 and a folding unit 400 . Hereinafter, each configuration of the cart unit 10 will be described in detail, but the folding unit 400 will be described as a separate clause.

The base 100 forms a frame in the horizontal direction of the lower side of the cart unit 10 . The base 100 extends in a direction toward and away from the vertical portion 200 , in the front-rear direction in the illustrated embodiment.

In one embodiment, the base 100 may extend horizontally with respect to the ground. Accordingly, the user can seat small items such as a bag on the base 100 .

The base 100 may be formed in a plate shape. In the illustrated embodiment, the base 100 is formed so that the front side edge and the rear side edge are rounded, respectively. The shape of the base 100 is coupled to the vertical part 200 , and the main wheel 110 and the sub wheel 120 may be provided in any shape capable of being rotatably coupled.

Each corner of the base 100 may be formed to be chamfered or rounded. Accordingly, the user is not injured by the edge of the base 100 .

The vertical part 200 is coupled to one side of the base 100 facing the vertical part 200 and to the rear side of the upper side in the illustrated embodiment.

The main wheel 110 is rotatably coupled to the other side of the base 100 opposite to the vertical portion 200, and to the lower rear side in the illustrated embodiment. In addition, the sub wheel 120 is rotatably coupled to the other side of the base 100, the lower front side in the illustrated embodiment.

The base 100 includes a main wheel 110 and a sub wheel 120 .

The main wheel 110 is rotatably coupled to the rear of the lower side of the base 100 . The main wheel 110 supports the cart unit 10 from the rear side.

In an embodiment, the main wheel 110 may be connected to a motor member (not shown). The motor member (not shown) may be rotated according to a control signal input by the user or the direction and strength of the user pushing or pulling the handle unit 300 . The motor member (not shown) may be rotated according to a situation in which the cart unit 10 is running.

Specifically, when the cart unit 10 travels uphill, the motor member (not shown) may be operated to rotate the main wheel 110 in a direction toward the front side. In addition, when the cart unit 10 travels downhill, the motor member (not shown) may be operated to rotate the main wheel 110 in a direction toward the rear side.

Accordingly, the strength of the force required for the user to drive the cart unit 10 can be reduced. Furthermore, a safety accident that may occur as the cart unit 10 is driven arbitrarily can be prevented.

A plurality of main wheels 110 may be provided. In the illustrated embodiment, the main wheel 110 includes a pair of main wheels 110 disposed to face each other.

The main wheel 110 provides power for the cart unit 10 to run. Accordingly, the main wheel 110 may be referred to as a “power wheel”.

The sub wheel 120 is rotatably coupled to the front of the lower side of the base 100 . The sub wheel 120 supports the cart unit 10 from the front side.

A plurality of sub wheels 120 may be provided. In the illustrated embodiment, the sub-wheel 120 includes a pair of sub-wheels 120 disposed to face each other.

The sub wheel 120 may be rotated in a horizontal direction with respect to the base 100 , that is, in a left and right direction. Accordingly, the user may adjust the direction of the sub wheel 120 to adjust the driving direction of the cart unit 10 . Accordingly, the sub wheel 120 may be referred to as a “steering wheel”.

The vertical part 200 forms a skeleton in the vertical direction of the cart part 10 . The vertical portion 200 extends in a direction toward and away from the ground, that is, in the vertical direction in the illustrated embodiment.

The vertical portion 200 may extend in the vertical direction while forming a predetermined inclination with respect to the ground. In one embodiment, the vertical portion 200 may extend obliquely toward the rear side in the direction in which the guardian grips the handle portion 300 , in the illustrated embodiment.

Accordingly, the vertical portion 200 is inclined toward the protector, the user's convenience can be improved.

The vertical portion 200 may be formed in a polygonal prism shape having a predetermined thickness. In the illustrated embodiment, the vertical portion 200 is formed in a rectangular prism shape having a cross-section in which the length in the front-rear direction is longer than the length in the left-right direction.

Each corner of the vertical portion 200 may be chamfered or rounded. Accordingly, the user is not injured by the vertical portion 200 .

One side of the vertical portion 200 facing the ground, the base 100 is coupled to the lower side in the illustrated embodiment.

In the cart unit 10 according to an embodiment of the present invention, the vertical portion 200 may be folded toward the base 100 . Accordingly, when the cart unit 10 is to be stored, the space occupied by the cart unit 10 can be minimized. A detailed description thereof will be provided later.

One end of the vertical portion 200 facing the base 100, the lower end in the illustrated embodiment may be formed to be inclined. In the illustrated embodiment, the lower end of the vertical portion 200 is formed so that the height of the front side is lower than the height of the rear side.

That is, the height of the lower end of the vertical portion 200 is increased in a direction from the front side to the rear side. The shape of the lower end of the vertical part 200 may be changed according to the shape of the upper end of the outer housing 430 and the base coupling part 470 .

As will be described later, in the cart part 10 according to an embodiment of the present invention, the vertical part 200 is torsionally rotated with respect to the outer housing 430 and the base coupling part 470 and may be folded toward the base 100 . . A detailed description thereof will be provided later.

The other side of the vertical part 200 opposite to the ground, the handle part 300 is coupled to the upper side in the illustrated embodiment. In one embodiment, the handle part 300 may be rotatably coupled to the vertical part 200 .

Accordingly, the handle unit 300 may be rotated according to the user's various body types and adjusted to an angle that is most easily gripped by the user.

The seat support unit 210 is a portion in which the seat unit 20 is detachably coupled to the cart unit 10 . The seat support part 210 supports the seat part 20 from the lower side.

The seat support 210 is electrically connected to the seat 20 . The seat part 20 seated on the seat support part 210 may conduct electricity with the cart part 10 .

The seat support unit 210 is electrically connected to a battery (not shown) provided in the cart unit 10 . The connection may be formed by a conducting wire member (not shown) or the like.

Accordingly, power supplied by the battery (not shown) may be transmitted to the seat unit 20 through the seat support unit 210 .

The seat support part 210 is located on one side of the vertical part 200 opposite to the handle part 300 , on the front side in the illustrated embodiment. That is, the seat part 20 seated on the seat support part 210 may be located on the front side of the user who operates the cart part 10 .

Accordingly, the user may operate the cart unit 10 while recognizing the state of the infant accommodated in the seat unit 20 .

The seat support part 210 is coupled to the vertical part 200 by a coupling member (not shown). In an embodiment not shown, the coupling member (not shown) may be rotated in a direction toward the vertical part 200 .

Accordingly, the seat support 210 may also be rotated toward the vertical portion 200 . As a result, when the cart unit 10 is to be stored, the space occupied by the cart unit 10 can be reduced.

The seat support 210 may be formed of a light-weight and high-rigidity material. In one embodiment, the sheet support 210 may be formed of reinforced plastic.

The seat support part 210 may be provided in any shape capable of stably supporting the seated seat part 20 . In the illustrated embodiment, the seat support 210 is formed as a portion of a spherical surface, which is convex downwardly.

This is due to the lower side of the seat portion 20 seated on the seat support portion 210 is formed in a spherical shape. That is, the shape of the sheet support 210 may be changed according to the shape of the lower side of the sheet 20 .

The handle unit 300 is a part gripped by the user to drive the cart unit 10 . The user may move the cart unit 10 forward or backward by pushing or pulling the handle unit 300 .

The handle part 300 is positioned on the vertical part 200 . Specifically, the handle part 300 is located on one side of the vertical part 200 opposite to the base 100 , and on the upper side in the illustrated embodiment.

The handle part 300 may be rotatably coupled to the vertical part 200 . Accordingly, the user can easily hold the handle unit 300 by rotating it according to the height. In addition, when the cart unit 10 is to be stored, the volume of the cart unit 10 may be reduced by rotating the handle unit 300 toward the front side of the vertical unit 200 .

At one position of the vertical part 200 positioned between the base 100 and the handle part 300 , a lifting part (not shown) connected to the seat support part 210 is through-coupled.

In a state coupled to the vertical portion 200 , the lifting unit may be moved in a direction toward the handle portion 300 or in a direction away from the handle portion 300 . In other words, the lifting unit may be moved in the vertical direction while being coupled to the vertical unit 200 .

Accordingly, the user can adjust the height of the seat unit 20 by adjusting the height of the lifting unit.

3. Description of the folding unit 400 according to an embodiment of the present invention

The cart unit 10 according to an embodiment of the present invention includes a folding unit 400 . The folding part 400 is respectively connected to the vertical part 200 and the base 100 . The folding part 400 may be rotated in a direction toward the base 100 or in a direction away from the base 100 .

Accordingly, the vertical portion 200 connected to the folding portion 400 may also be folded in a direction toward the base 100 . In addition, the vertical portion 200 in the folded state may be unfolded in a direction opposite to the base 100 .

In this case, the folding unit 400 may be folded by performing at least two steps. That is, the folding unit 400 is not folded by a single step. Accordingly, even when the user mismanages the folding unit 400 or the folding unit 400 malfunctions, the folding unit 400 is folded only when at least two steps are performed.

Accordingly, the safety of the infant seated on the seat unit 20 can be ensured.

Hereinafter, the folding unit 400 according to an embodiment of the present invention will be described in detail with reference to FIGS. 2 to 3 .

In the illustrated embodiment, the folding unit 400 includes a manipulation unit 410 , a stopper coupling unit 420 , an outer housing 430 , a first rotating unit 440 , a second rotating unit 450 , a rotating pin 460 , It includes a base coupling part 470 and a wiring member 480 .

(1) Description of the operation unit 410

The manipulation unit 410 is operated by a user to perform a preceding step for operating the folding unit 400 . The manipulation unit 410 is movably coupled to the vertical unit 200 in the vertical direction.

Specifically, the manipulation unit 410 may be slidably moved between the upper and lower sides of the portion where the vertical unit 200 and the base coupling unit 470 are connected.

As the manipulation unit 410 is pressed and moved downward, the stopper coupling unit 420 coupled to the manipulation unit 410 is also moved downward. Accordingly, the stopper coupling part 420 is moved after being coupled with a stopper (not shown) at different positions sequentially, and the vertical part 200 may be released from the operation part 410 and the stopper coupling part 420 . . Accordingly, the vertical portion 200 may be rotated with respect to the base coupling portion 470 .

The manipulation unit 410 may be formed of a light-weight and high-rigidity material. In one embodiment, the manipulation unit 410 may be formed of reinforced plastic.

The manipulation unit 410 is coupled to the stopper coupling unit 420 . When the manipulation unit 410 is pressed, the manipulation unit 410 may slide in a direction toward the base 100 together with the stopper coupling unit 420 , that is, downward.

In the illustrated embodiment, the manipulation unit 410 includes an outer peripheral portion 411 , a pressing portion 412 and a hollow portion 413 .

The outer peripheral part 411 forms the outer shape of the operation part 410 . The outer peripheral portion 411 is a portion to which the manipulation unit 410 is exposed to the outside. The shape of the outer peripheral portion 411 may be determined according to the shapes of the vertical portion 200 and the outer housing 430 .

That is, in the illustrated embodiment, the vertical portion 200 and the outer housing 430 have a length in the left-right direction shorter than a length in the front-rear direction, and have a rod shape extending in the vertical direction. Accordingly, the outer peripheral portion 411 may also have a length in the left and right directions that is shorter than a length in the front and rear directions, and may be formed in a columnar shape extending in the vertical direction.

One side of the outer peripheral portion 411, a pressing portion 412 is formed to protrude from the rear side in the illustrated embodiment.

The pressing unit 412 is a part in which the user presses and manipulates the operation unit 410 using a hand or foot. The pressing portion 412 is formed to protrude by a predetermined length from one side of the outer peripheral portion 411, the rear side in the illustrated embodiment. In other words, the pressing portion 412 is formed to protrude in the direction in which the protector who operates the cart portion 10 is located.

Accordingly, the guardian can easily press the manipulation unit 410 at a position in which the cart unit 10 is driven without changing the person's position.

In an embodiment, the pressing unit 412 may be integrally formed with the manipulation unit 410 .

The hollow part 413 is a space formed inside the manipulation unit 410 . A stopper coupling part 420 is inserted into the hollow part 413 .

The hollow portion 413 is formed to penetrate along the extending direction of the manipulation unit 410 . In the illustrated embodiment, the hollow portion 413 is formed through the inside of the manipulation unit 410 in the vertical direction. The hollow portion 413 is partially surrounded by the inner surface of the outer peripheral portion 411 .

(2) Description of the stopper coupling part 420

A stopper (not shown) is inserted into or withdrawn from the stopper coupling part 420 . When a stopper (not shown) is inserted into the stopper coupling part 420 , the stopper coupling part 420 does not move arbitrarily unless an external force is applied.

Accordingly, the stopper (not shown) is withdrawn from the stopper coupling portion 420 only when the guardian applies an external force to press the operation unit 410 . As a result, arbitrary elevation of the manipulation unit 410 and the stopper coupling unit 420 is prevented, and the safety of infants can be ensured.

The stopper coupling part 420 is coupled to the operation part 410 . Specifically, the stopper coupling part 420 is inserted through the hollow part 413 of the operation part 410 .

The stopper coupling part 420 may be raised and lowered integrally with the operation part 410 . When the manipulation unit 410 is pressed upward or downward, the stopper coupling unit 420 may also be lifted upward or downward.

In order to firmly maintain the coupling state between the stopper coupling part 420 and the operation part 410, a separate fastening member (not shown) may be provided. Alternatively, the stopper coupling portion 420 may be integrally formed with the operation portion 410 in the manner of insert injection molding.

The stopper coupling portion 420 may be formed of a light-weight and high-rigidity material. In one embodiment, the stopper coupling portion 420 may be formed of reinforced plastic.

The vertical part 200 or the outer housing 430 is coupled through the inside of the stopper coupling part 420 . That is, before the operation part 410 is pressed downward, the vertical part 200 and the outer housing 430 are coupled through the inside of the stopper coupling part 420 . When the operation unit 410 is pressed downward and the stopper coupling unit 420 is moved downward, the outer housing 430 is coupled through the inside of the stopper coupling unit 420 .

Accordingly, the vertical part 200 may be released from the operation part 410 and the stopper coupling part 420 , and may be rotated toward the base 100 . A detailed description thereof will be provided later.

In the illustrated embodiment, the stopper coupling portion 420 includes a body portion 421 , a stopper insertion hole 422 and a space portion 423 .

The body portion 421 forms the outer shape of the stopper coupling portion 420 . The body portion 421 is a portion to which the stopper coupling portion 420 is exposed to the outside. The shape of the body part 421 may be determined according to the shape of the hollow part 413 of the manipulation part 410 and the shape of the vertical part 200 and the outer housing 430 .

That is, in the illustrated embodiment, the hollow portion 413 , the vertical portion 200 , and the outer housing 430 have a length in the left and right directions that is shorter than a length in the front and rear directions, and have a bar shape extending in the vertical direction. Accordingly, the body portion 421 may also have a length in the left-right direction that is shorter than a length in the front-rear direction, and may be formed in a columnar shape extending in the vertical direction.

In one embodiment, the body portion 421 may extend to have the same height as the manipulation unit 410 . In the above embodiment, the stopper coupling part 420 is not exposed to the outside of the hollow part 413 .

A stopper insertion hole 422 is formed through a pair of side surfaces of the body portion 421 facing each other, left and right sides in the illustrated embodiment.

The stopper insertion hole 422 is a space into which a stopper (not shown) is inserted. As the stopper coupling part 420 moves up and down, the stopper (not shown) may be inserted into or withdrawn from the stopper insertion hole 422 .

When a stopper (not shown) is inserted into the stopper insertion hole 422 , the stopper (not shown) is not arbitrarily drawn out from the stopper insertion hole 422 unless an external force is applied. Accordingly, the stopper coupling portion 420 is not lifted up and down in the vertical direction, so that the state of the cart portion 10 can be maintained.

A plurality of stopper insertion holes 422 may be formed. The plurality of stopper insertion holes 422 may be positioned to be spaced apart from each other in the direction in which the stopper coupling part 420 is lifted, that is, in the vertical direction in the illustrated embodiment.

In the illustrated embodiment, the stopper insertion hole 422 includes a first stopper insertion hole 422a positioned at a lower side and a second stopper insertion hole 422b positioned at an upper side.

The first stopper insertion hole 422a is a space into which the stopper (not shown) is inserted when the operation unit 410 is not pressed or pressed by a small amount of force. The first stopper insertion hole 422a is positioned lower than the second stopper insertion hole 422b.

When a stopper (not shown) is inserted into the first stopper insertion hole 422a , the stopper coupling part 420 is coupled to both the vertical part 200 and the external housing 430 . Accordingly, the rotation of the vertical part 200 is limited by the stopper coupling part 420 .

The second stopper insertion hole 422b is a space into which the stopper (not shown) is inserted when the operation unit 410 is sufficiently pressed. The second stopper insertion hole 422b is located above the first stopper insertion hole 422a.

That is, a stopper (not shown) may be inserted into the second stopper insertion hole 422b only when the manipulation unit 410 and the stopper coupling unit 420 have sufficiently moved downward.

When a stopper (not shown) is inserted into the second stopper insertion hole 422b, the stopper coupling part 420 is coupled only to the outer housing 430 . That is, the vertical portion 200 is released from the stopper coupling portion 420 . Accordingly, the vertical portion 200 may be rotated in a direction toward the base 100 .

The space portion 423 is a space formed inside the stopper coupling portion 420 . The vertical part 200 or the external housing 430 is inserted and coupled to the space part 423 .

Specifically, when the position of the stopper coupling part 420 is relatively upper, that is, in a state in which the rotation of the vertical part 200 is restricted, the space part 423 has the vertical part 200 and the external housing ( 430) is insertedly coupled.

In addition, when the position of the stopper coupling portion 420 is relatively lower, that is, in a state in which rotation of the vertical portion 200 is allowed, the outer housing 430 is inserted and coupled to the space portion 423 .

The space portion 423 is formed through the stopper coupling portion 420 in the extending direction. In the illustrated embodiment, the space portion 423 is formed through the inside of the stopper coupling portion 420 in the vertical direction. The space portion 423 is partially surrounded by the inner surface of the body portion 421 .

(3) Description of the outer housing 430

The outer housing 430 surrounds the base coupling portion 470 from the outside. Specifically, the base coupling part 470 is inserted through the accommodating part 431 which is a space formed inside the outer housing 430 .

Accordingly, the base coupling portion 470 is not exposed to the outside. As a result, the outer appearance of the cart unit 10 may be beautiful.

For stable coupling between the outer housing 430 and the base coupling part 470 , a separate fastening member (not shown) may be provided.

The outer housing 430 is coupled to the manipulation unit 410 and the stopper coupling unit 420 . Specifically, the outer housing 430 is inserted through the space portion 423, which is a space formed inside the stopper coupling portion 420 .

The manipulation unit 410 and the stopper coupling unit 420 may slide in the vertical direction of the outer housing 430 .

The outer housing 430 may be formed of a light-weight and high-rigidity material. In one embodiment, the outer housing 430 may be formed of reinforced plastic.

One end of the outer housing 430 facing the vertical portion 200, the upper end in the illustrated embodiment may be formed to be inclined.

That is, in the illustrated embodiment, the upper end of the outer housing 430 is formed so that the height of the front side is lower than the height of the rear side. That is, the height of the upper end of the outer housing 430 is increased in a direction from the front side to the rear side.

Accordingly, the vertical portion 200 coupled to the outer housing 430 does not rotate in a direction toward the rear side. In addition, the vertical portion 200 may be smoothly torsionally rotated with respect to the outer housing 430 and folded toward the base 100 . A detailed description thereof will be provided later.

In the illustrated embodiment, the outer housing 430 includes a receiving portion 431 .

The accommodating part 431 is a space formed inside the outer housing 430 . The base coupling part 470 is coupled through the receiving part 431 .

The receiving part 431 is formed to extend in the extending direction of the outer housing 430 inside the outer housing 430 . In the illustrated embodiment, the accommodating part 431 extends in the vertical direction like the outer housing 430 .

Although not shown, the outer housing 430 may include a stopper coupling hole (not shown). The stopper coupling hole (not shown) may be formed through a pair of surfaces facing the receiving portion 431 of the outer housing 430 interposed therebetween, respectively, on the left and right sides of the illustrated embodiment.

The stopper coupling hole (not shown) accommodates the stopper (not shown). The stopper (not shown) may be moved outside, that is, in a direction opposite to the base coupling part 470 and toward the base coupling part 470 in a state inserted into the stopper coupling hole (not shown).

When the stopper (not shown) moves in a direction opposite to the base coupling part 470 , the stopper (not shown) may be inserted into any one of the plurality of stopper insertion holes 422 of the stopper coupling part 420 .

When the stopper (not shown) is moved in the direction toward the base coupling part 470 , the stopper (not shown) is accommodated in the stopper coupling hole (not shown), and may be located inside the outer surface of the outer housing 430 . .

Accordingly, the manipulation unit 410 and the stopper coupling unit 420 may be lifted up and down in the vertical direction. In addition, the movement of the stopper (not shown) may be achieved by vertical movement of the manipulation unit 410 and the stopper coupling unit 420 . A detailed description thereof will be provided later.

The receiving part 431 communicates with the stopper coupling hole (not shown). A stopper (not shown) coupled to the base coupling part 470 may be exposed to the outside of the outer housing 430 through a stopper coupling hole (not shown).

(4) Description of the first rotating part 440

The first rotation unit 440 may be rotated relative to the second rotation unit 450 . Accordingly, the vertical portion 200 may be rotated relative to the base coupling portion 470 and the outer housing 430 to be folded toward the base 100 .

The first rotating part 440 is coupled to the vertical part 200 . Specifically, the first rotating part 440 is fixedly coupled to one end of the vertical part 200 facing the base 100 , the surface of the lower end in the illustrated embodiment.

As described above, the lower end of the vertical portion 200 is formed so that the height of the front side is lower than the height of the rear side. That is, the lower end of the vertical portion 200 is formed to be inclined.

Accordingly, it will be understood that the first rotating part 440 fixedly coupled to the lower end of the vertical part 200 will also be inclined with respect to the base 100 or the ground.

At this time, in order to prevent the first rotating part 440 coupled to the lower end of the vertical part 200 from being unnecessarily exposed to the outside, a groove (not shown) is formed on the surface of the lower end of the vertical part 200 . A depression may be formed. The first rotating part 440 may be inserted and coupled to the groove (not shown).

In an embodiment in which the groove (not shown) is formed, the shape of the groove (not shown) may be determined to correspond to the shape of the first rotating part 440 .

The first rotating part 440 is rotatably coupled to the base coupling part 470 . The coupling is achieved by the rotation pins 460 that are respectively through-coupled to the first rotation part 440 and the second rotation part 450 .

In the illustrated embodiment, the first rotation unit 440 includes a first rotation member 441 and a first bracket 442 .

The first rotation member 441 forms a body of the first rotation unit 440 . The first rotating member 441 is coupled to the surface of the lower end of the vertical portion 200 .

In the illustrated embodiment, the first rotation member 441 extends obliquely in one direction, that is, in the front-rear direction, and is provided in the form of a plate having both ends in the extension direction rounded and a cross-section having a predetermined thickness.

The shape of the first rotating member 441 may be any shape capable of being fixedly coupled to the surface of the lower end of the vertical part 200 and rotatably coupled to the second rotating member 450 .

A first through hole 441a is formed through the inside of the first rotation member 441 .

The first through hole 441a is coupled to the rotation pin 460 . Specifically, the rotation pin 460 is rotatably through-coupled to the first through hole 441a. When the rotation pin 460 is through-coupled to the first through-hole 441a , the wiring coupling hole 461 communicates with the wiring receiving part 471 of the base coupling part 470 .

A wiring member 480 is inserted through the first through hole 441a. That is, the rotation pin 460 is through-coupled to the inside of the first through hole 441a , and the wiring member 480 is through-coupled to the wiring coupling hole 461 formed through the inside of the rotation pin 460 .

As will be described later, the wiring member 480 sequentially passes through the wiring receiving part 471 , the second through hole 451a , the wiring coupling hole 461 , and the first through hole 441a of the base coupling part 470 . can be extended by

Accordingly, each component of the battery (not shown) and the cart unit 10 and the seat unit 20 may be electrically connected to each other. A detailed description thereof will be provided later.

The first bracket 442 rotatably supports the first rotation member 441 . The first bracket 442 is positioned between the first rotation member 441 and the second rotation member 451 .

The first bracket 442 is coupled to the first rotation member 441 . The first bracket 442 may be rotated together with the first rotation member 441 .

In an embodiment, the first bracket 442 may be connected to the return spring 453 . When the first bracket 442 is rotated together with the first rotation member 441 , the return spring 453 is deformed in shape to store a restoring force (ie, an elastic force).

Accordingly, when the vertical portion 200 is torsionally rotated, the return spring 453 applies an elastic force in a direction opposite to the direction in which the vertical portion 200 is rotated. Accordingly, since the vertical portion 200 is torsionally rotated under a predetermined reaction force, the folding process of the vertical portion 200 may be stably performed.

The first bracket 442 is coupled to the second bracket 452 . As long as no external force is applied, the first bracket 442 may maintain a coupled state with the second bracket 452 .

Accordingly, as long as the protector does not apply an external force, any rotation of the vertical portion 200 can be prevented. As a result, since the situation in which the vertical part 200 is arbitrarily folded is prevented, the safety of the seated infant can be ensured.

A rotation pin 460 is coupled through the first bracket 442 . To this end, a rotation pin receiving portion may be formed through the inside of the first bracket 442 .

(5) Description of the second rotating part 450

The second rotation unit 450 may be rotated relative to the first rotation unit 440 . Accordingly, the vertical portion 200 may be rotated relative to the base coupling portion 470 and the outer housing 430 to be folded toward the base 100 .

The second rotating part 450 is coupled to the base coupling part 470 . Specifically, the second rotating part 450 is fixedly coupled to one end of the base coupling part 470 facing the vertical part 200, and the surface of the upper end in the illustrated embodiment.

As will be described later, the upper end of the base coupling part 470 is formed so that the height of the front side is lower than the height of the rear side. That is, the upper end of the base coupling part 470 is formed to be inclined.

Accordingly, it will be understood that the second rotating part 450 fixedly coupled to the surface of the upper end of the base coupling part 470 will also be inclined with respect to the base 100 or the ground.

Accordingly, the first rotation unit 440 and the second rotation unit 450 may be disposed to face each other. In an embodiment, the first rotation unit 440 and the second rotation unit 450 may be disposed parallel to each other.

In addition, as will be described later, the base coupling part 470 is fixedly coupled to the base 100 . Accordingly, the relative rotation of the first rotating unit 440 and the second rotating unit 450 is achieved by rotating the first rotating unit 440 and the vertical unit 200 coupled thereto.

The second rotating part 450 is rotatably coupled to the vertical part 200 . The coupling is achieved by the rotation pins 460 that are respectively through-coupled to the first rotation part 440 and the second rotation part 450 .

In the illustrated embodiment, the second rotation unit 450 includes a second rotation member 451 , a second bracket 452 , a return spring 453 , and a sealing member 454 .

The second rotation member 451 forms a body of the second rotation unit 450 . The second rotation member 451 is coupled to the surface of the upper end of the base coupling part 470 .

In the illustrated embodiment, the second rotation member 451 extends obliquely in one direction, that is, in the front-rear direction, and is provided in a plate shape having both ends in the extension direction rounded and a cross-section and a predetermined thickness.

The shape of the second rotation member 451 may be any shape capable of being fixedly coupled to the surface of the upper end of the base coupling part 470 and rotatably coupled to the first rotation member 440 .

In an embodiment, the second rotation member 451 may have the same shape as the first rotation member 441 .

The second rotating member 451 is accommodated in the rotating part receiving part 472 recessed in the upper end surface of the base coupling part 470 . As described above, the first rotation member 441 may be accommodated in a recess formed in the lower end surface of the vertical portion 200 .

Accordingly, the lower end surface of the vertical part 200 and the upper end surface of the base coupling part 470 may be in direct contact. Accordingly, in a state in which the vertical portion 200 is not folded, a state in which the vertical portion 200 and the base coupling portion 470 are in contact and coupled may be stably maintained.

A second through hole 451a is formed through the inside of the second rotation member 451 .

The second through hole 451a is coupled to the rotation pin 460 . Specifically, the rotation pin 460 is rotatably through-coupled to the second through hole 451a. When the rotation pin 460 is coupled through the second through hole 451a , the wiring coupling hole 461 communicates with the wiring receiving part 471 of the base coupling part 470 .

A wiring member 480 is inserted through the second through hole 451a. That is, the rotation pin 460 is through-coupled to the inside of the second through hole 451a , and the wiring member 480 is through-coupled to the wiring coupling hole 461 formed through the inside of the rotation pin 460 .

As will be described later, the wiring member 480 sequentially passes through the wiring receiving part 471 , the second through hole 451a , the wiring coupling hole 461 , and the first through hole 441a of the base coupling part 470 . can be extended by

Accordingly, each component of the battery (not shown) and the cart unit 10 and the seat unit 20 may be electrically connected to each other. A detailed description thereof will be provided later.

The second bracket 452 supports the second rotation member 451 . The second bracket 452 is positioned between the first rotation member 441 and the second rotation member 451 .

The second bracket 452 is coupled to the second rotation member 451 . In this case, the second rotation member 451 is fixedly coupled to the base coupling part 470 . Accordingly, the second bracket 452 also does not rotate together with the second rotation member 451 .

The second bracket 452 is coupled to the first bracket 442 . As long as no external force is applied, the second bracket 452 may maintain a coupled state with the first bracket 442 .

In one embodiment, the first bracket 442 and the second bracket 452 may be engaged with each other. That is, each of the first bracket 442 and the second bracket 452 includes teeth alternately disposed along the outer periphery thereof and a space formed between the teeth.

At this time, the teeth of any one of the first bracket 442 and the second bracket 452 may be inserted into the space portion of the other of the first bracket 442 and the second bracket 452 .

Therefore, in order for the protector to twist and rotate the vertical part 200 , the process of separating the first bracket 442 and the second bracket 452 by pulling the vertical part 200 upward should be preceded.

As a result, as long as the protector does not apply an external force, any rotation of the vertical portion 200 can be prevented. As a result, since the situation in which the vertical part 200 is arbitrarily folded is prevented, the safety of the seated infant can be ensured.

A rotation pin 460 is coupled through the second bracket 452 . To this end, a rotating pin receiving portion may be formed through the inside of the second bracket 452 .

The return spring 453 is deformed in shape and stores restoring force when the vertical portion 200 is torsionally rotated and folded. In addition, the return spring 453 transmits the restoring force to the first rotating part 440 or the vertical part 200 .

The return spring 453 may be provided in any form capable of storing restoring force (ie, elastic force) by shape deformation and transmitting the stored restoring force to another member. In one embodiment, the return spring 453 may be provided in the form of a coil spring.

The return spring 453 is coupled to the rotation pin 460 . Specifically, in the embodiment in which the return spring 453 is provided as a coil spring, the rotation pin 460 is inserted through the hollow portion formed through the return spring 453 in the longitudinal direction.

At this time, as will be described later, the rotation pin 460 is formed at each end of the extending direction, a coupling portion formed with a larger diameter than the other portion. One end of the return spring 453 opposite to the second rotation member 451 is supported by the coupling portion.

The return spring 453 may be accommodated in the inner space of the base coupling part 470 . The return spring 453 may be accommodated in the space of the base coupling part 470 and be covered by the second rotation member 451 . That is, the other end of the return spring 453 is supported by the second rotation member 451 .

Accordingly, when the guardian pulls the vertical portion 200 and the first bracket 442 coupled thereto upward, the rotation pin 460 is moved while compressing the return spring 453 . Accordingly, a restoring force may be stored in the return spring 453 .

In addition, when the vertical portion 200 is torsionally rotated, the return spring 453 may also be rotated together. Accordingly, the restoring force stored by the return spring 453 is formed in a direction for pressing the vertical portion 200 toward the base coupling portion 470 .

The sealing member 454 is inserted and coupled to the second through hole 451a. A rotation pin 460 is coupled through the space formed inside the sealing member 454 . That is, the sealing member 454 is formed to surround the outer periphery of the rotation pin 460 .

Accordingly, the rotation pin 460 is not freely swinging in the radial direction in a state in which the rotation pin 460 is through-coupled to the second through hole 451a.

The sealing member 454 may be formed of a material having a predetermined elasticity. In an embodiment, the sealing member 454 may be formed of a rubber or synthetic resin material.

(6) Description of the rotating pin 460

The rotation pin 460 rotatably couples the first rotation part 440 and the second rotation part 450 . The rotation pin 460 is rotatably coupled to the first rotation unit 440 and the second rotation unit 450 , respectively.

The rotation pin 460 is formed to extend in one direction, in the front-rear direction in the illustrated embodiment, and has a circular cross-section. The shape of the rotation pin 460 may be provided in any shape capable of rotatably coupling the first rotation part 440 and the second rotation part 450 .

The rotation pin 460 is rotatably coupled through the first rotation part 440 . Specifically, the rotation pin 460 is through-coupled to the first bracket 442 and the first through hole 441a, respectively.

The rotation pin 460 is rotatably coupled through the second rotation part 450 . Specifically, the rotation pin 460 is through-coupled to the second bracket 452 , the sealing member 454 , the second through hole 451a , and the return spring 453 , respectively.

A portion of the rotation pin 460 is accommodated in the base coupling portion 470 . In addition, the remaining portion of the rotation pin 460 is exposed to the outside of the base coupling portion (470). In the illustrated embodiment, the rear side portion of the rotary pin 460 is accommodated in the base coupling portion 470 , and the front side portion of the rotary pin 460 is exposed to the outside of the base coupling portion 470 .

The rotation pin 460 may be formed so that the diameter of each end in the extending direction is larger than the diameter of the remaining portion. In the illustrated embodiment, the rotation pin 460 is formed so that the diameter of the front side end and the rear side end is larger than the diameter of the other parts.

The diameter of each end of the rotation pin 460 is the diameter of the first through hole 441a, the diameter of the inner space of the first bracket 442, the diameter of the second through hole 451a, the second bracket 452 ) may be formed to be larger than the diameter of the inner space and the inner hollow diameter of the return spring 453 .

Similarly, the diameter of the remaining parts other than the respective ends of the rotation pin 460 is the diameter of the first through hole 441a, the diameter of the inner space of the first bracket 442, the diameter of the second through hole 451a, The diameter of the inner space of the second bracket 452 and the inner hollow of the return spring 453 may be formed to be the same as or smaller than the diameter.

In this case, the front end of the rotation pin 460 is located outside the first through hole 441a of the first rotation member 441 . That is, the front side end of the rotation pin 460 is supported by the outer surface of the first rotation member 441 , the front side surface in the illustrated embodiment.

In addition, the rear side end of the rotation pin 460 is located inside the space inside the base coupling portion 470 , the end of the return spring 453 , the rear side end in the illustrated embodiment. That is, the rear end of the rotation pin 460 is elastically supported by the end of the return spring 453 , in the illustrated embodiment, the rear end.

Accordingly, when the vertical portion 200 is pulled away from the base coupling portion 470 , the rotation pin 460 is moved together with the first rotation member 441 coupled to the vertical portion 200 . At this time, the rotation pin 460 is moved while pressing the return spring 453 .

Accordingly, the return spring 453 may be compressed to store restoring force. A detailed description of the process will be described later.

The rotation pin 460 includes a wiring coupling hole 461 .

The wiring coupling hole 461 is a space formed inside the rotation pin 460 . The wiring coupling hole 461 is formed through the inside of the rotation pin 460 . The wiring coupling hole 461 may extend in the same direction as the rotation pin 460 . In the illustrated embodiment, the wiring coupling hole 461 is formed to extend in the front-rear direction.

The wire coupling hole 461 communicates with the outside of the wire receiving part 471 and the base coupling part 470 .

A wiring member 480 is through-coupled to the wiring coupling hole 461 . The wiring member 480 passing through the wiring receiving part 471 of the base coupling part 470 may extend toward the vertical part 200 through the wiring coupling hole 461 .

(7) Description of the base coupling part 470

The base coupling part 470 is a part where the folding part 400 is coupled to the base 100 . The base coupling part 470 forms a lower side of the folding part 400 .

The base coupling part 470 is fixedly coupled to the outer housing 430 . Specifically, the base coupling portion 470 is coupled through the receiving portion 431 of the outer housing 430 . A separate fastening member (not shown) may be provided for stable coupling between the base coupling part 470 and the outer housing 430 .

The lower side of the base coupling part 470 is fixedly coupled to the base 100 . Specifically, the base coupling part 470 is coupled to the upper side of the rear of the base 100 . A fastening member (not shown) may be provided for coupling the base coupling part 470 and the base 100 .

The base coupling part 470 may be formed of a light-weight and high-rigidity material. In an embodiment, the base coupling part 470 may be formed of reinforced plastic.

In the illustrated embodiment, the base coupling part 470 includes a wire receiving part 471 and a rotating part receiving part 472 .

The wiring accommodating part 471 is a space formed inside the base coupling part 470 . In the illustrated embodiment, the wiring receiving part 471 is located on the rear side of the base coupling part 470 .

The wiring member 480 is accommodated in the wiring accommodating part 471 . The wiring member 480 may extend toward the vertical portion 200 through the wiring receiving portion 471 .

The wiring accommodating part 471 communicates with an opening (not shown) formed under the base coupling part 470 . The wiring member 480 connected to an external battery (not shown) to be energized may extend to the wiring receiving part 471 through the opening (not shown).

The wiring accommodating part 471 communicates with the wiring coupling hole 461 . The wiring member 480 passing through the wiring receiving part 471 may pass through the wiring coupling hole 461 and extending to the outside of the base coupling part 470 .

In the illustrated embodiment, the wiring accommodating part 471 communicates with the first part and the first part extending in the vertical direction, and extends obliquely from the upper side of the first part to the surface of the upper end of the base coupling part 470 . and a second part being

A return spring 453 and a rear side portion of the rotation pin 460 may be accommodated in the second portion.

In order to accommodate the return spring 453 and the rotation pin 460 , the diameter of the wire receiving portion 471 is preferably equal to or larger than the outer diameter of the return spring 453 .

The rotating part accommodating part 472 accommodates the second rotating member 451 . The second rotation member 451 may be accommodated in the rotation unit accommodating part 472 , and may be fixedly coupled to the base coupling part 470 .

The rotating part receiving part 472 is formed on one end of the base coupling part 470 facing the vertical part 200, on the surface of the upper end in the illustrated embodiment. The rotating part accommodating part 472 is recessed in the surface of the upper end of the base coupling part 470 .

In the illustrated embodiment, the rotating part accommodating part 472 is formed in a shape corresponding to the second rotating member 451 . The recessed depth of the rotating part receiving part 472 is preferably formed to correspond to the thickness of the second rotating member 451 .

The rotating part accommodating part 472 communicates with the wiring accommodating part 471 . The wiring member 480 passing through the wiring receiving part 471 may extend through the wiring coupling hole 461 of the rotation pin 460 coupled to the second rotation member 451 .

Although not shown, a stopper (not shown) may be provided on the base coupling part 470 .

A stopper (not shown) is inserted or drawn out into the stopper insertion hole 422 of the stopper coupling part 420 . When a stopper (not shown) is inserted into the stopper coupling unit 420 , the manipulation unit 410 and the stopper coupling unit 420 do not move downward unless an external force is applied.

As a result, the stopper (not shown) restricts any movement of the operation unit 410 and the stopper coupling unit 420 in the downward direction of the, thereby preventing any rotation of the vertical unit 200 .

A stopper (not shown) may be coupled to the base coupling part 470 . A plurality of stoppers (not shown) may be provided. For example, two stoppers (not shown) may be provided and respectively positioned on the left and right sides of the base coupling part 470 .

The stopper (not shown) may be elastically supported. For elastic support of the stopper (not shown), a separate elastic member (not shown) may be provided. Accordingly, the stopper (not shown) may be moved in a direction toward the inside of the base coupling portion 470 when an external force is applied.

In the above example, a stopper (not shown) located on the left side of the base coupling part 470 may be moved to the right side of the base coupling part 470 . In addition, a stopper (not shown) positioned on the right side of the base coupling part 470 may be moved to the left side of the base coupling part 470 .

The stopper (not shown) may be moved toward the inside of the base coupling part 470 by the vertical movement of the stopper coupling part 420 . That is, the stopper coupling part 420 slides downward or upward, and presses the stopper (not shown) to the inside of the base coupling part 470 .

In a state in which the stopper (not shown) is not pressurized, that is, in a state in which it is not moved to the inside of the base coupling part 470 , the stopper (not shown) is a stopper coupling hole (not shown) and a stopper insertion hole of the outer housing 430 . 422 may be inserted.

When the stopper (not shown) is pressed, the stopper (not shown) may be withdrawn from the stopper insertion hole 422 and inserted only into the stopper coupling hole (not shown).

Accordingly, the manipulation unit 410 and the stopper coupling unit 420 may slide vertically along the outer surface of the outer housing 430 . A detailed description of this process will be provided later.

The stopper (not shown) may be formed to have a tapered outer periphery so that the stopper (not shown) can be smoothly pressed by the vertical movement of the manipulation unit 410 and the stopper coupling unit 420 .

(8) Description of the wiring member 480

The wiring member 480 connects the outside and the inside of the cart unit 10 to be energized. In addition, the wiring member 480 connects the cart unit 10 and the seat unit 20 coupled thereto to be energized.

In one embodiment, the cart unit 10 may be provided with a battery (not shown). In the above embodiment, the wiring member 480 may connect the battery (not shown) and various components provided in the cart unit 10 and the seat unit 20 to be energized. Accordingly, power for operating the smart stroller 1 may be supplied.

The wiring member 480 connects the battery (not shown) provided in the cart unit 10 or an external power source and each component of the cart unit 10 and the seat unit 20 to be energized.

In an embodiment, a battery (not shown) may be located below the base 100 . Accordingly, one end of the wiring member 480 may extend with the lower side of the base 100 .

The wiring member 480 may extend from the battery (not shown) toward the vertical portion 200 . The wiring member 480 may be accommodated in the base coupling part 470 . Specifically, the wiring member 480 may be accommodated in the wiring accommodating part 471 and extend toward the vertical part 200 .

As described above, in the cart portion 10 according to an embodiment of the present invention, the vertical portion 200 may be folded toward the base 100 .

At this time, the wiring member 480 is extended through the wiring coupling hole 461 formed inside the rotation pin 460 that functions as a central axis of relative rotation of the vertical portion 200 and the base coupling portion 470 .

That is, the wiring member 480 is not folded or twisted despite the relative rotation of the vertical portion 200 and the base coupling portion 470 .

4. Description of the folding process of the cart unit 10 according to an embodiment of the present invention

In the cart unit 10 according to an embodiment of the present invention, the vertical portion 200 may be folded toward the base 100 . Specifically, the vertical portion 200 may be torsionally rotated and folded toward the base 100 . Accordingly, when the smart stroller 1 is stored, the space occupied is reduced, thereby reducing user convenience.

In addition, in one embodiment, the seat portion 20 may be detachably coupled to the cart (10). At this time, when the vertical portion 200 is arbitrarily folded toward the base 100, it is difficult to ensure the safety of the infant seated on the seat portion 20.

Accordingly, in the cart part 10 according to an embodiment of the present invention, the vertical part 200 can be folded toward the base 100, and the vertical part 200 can be rotated only when the guardian performs a plurality of steps. do.

Accordingly, the safety of the infant seated on the seat unit 20 can be ensured while the convenience of the guardian is improved.

In addition, after the vertical part 200 is folded toward the base 100 , the handle part 300 and the base 100 may be coupled. Accordingly, the folded state of the cart unit 10 may be stably maintained.

Hereinafter, a process in which the vertical part 200 of the cart part 10 according to an embodiment of the present invention is folded will be described in detail with reference to FIGS. 4 to 12 .

4 to 8 , the relative rotation process of the first rotating unit 440 and the second rotating unit 450 of the folding unit 400 according to an embodiment of the present invention is illustrated. For convenience of understanding, illustration of the vertical portion 200 is omitted.

Referring to FIG. 4 , the first rotation member 441 and the second rotation member 451 are disposed to face each other. In one embodiment, the first rotation member 441 and the second rotation member 451 may be positioned parallel to each other.

In addition, in the embodiment shown in FIG. 4 , the first rotation member 441 and the second rotation member 451 are disposed to be spaced apart from each other. That is, in the above state, after the manipulation unit 410 and the stopper coupling unit 420 are pressed by the protector and moved downward, the vertical unit 200 is pulled in the opposite direction to the base coupling unit 470 , that is, upward. state will be understood.

In a state in which the above process is not preceded, that is, in a state in which the operation part 410 and the stopper coupling part 420 are both coupled to the vertical part 200 and the base coupling part 470, the first rotating member 441 and the second It will be understood that the rotating members 451 are in contact with each other.

As the first rotation member 441 and the second rotation member 451 are spaced apart, the first bracket 442 and the second bracket 452 that are engaged with each other are also separated.

That is, each tooth portion of the first bracket 442 and the second bracket 452 is drawn out from each space portion of the first bracket 442 and the second bracket 452 . Accordingly, the first bracket 442 is in a state in which it can be rotated relatively with respect to the second bracket 452 .

In this case, the first rotation member 441 is moved in a direction away from the second rotation member 451 , and the rotation pin 460 is also moved in the same direction. Accordingly, the return spring 453 is pressed by one side of the rotation pin 460 opposite to the first rotation member 441 , the rear end in the illustrated embodiment.

5 to 8 , a process in which the first rotation member 441 is relatively rotated with respect to the second rotation member 451 is illustrated. In the illustrated embodiment, the first rotation member 441 is rotated in a clockwise direction with respect to the second rotation member 451, but it will be understood that the rotation may be reversed.

In an embodiment, the first rotation member 441 may be rotated by 180° with respect to the second rotation member 451 . Accordingly, the vertical portion 200 may also be rotated by 180° with respect to the base coupling portion 470 .

As described above, each end of the vertical portion 200 and the base coupling portion 470 facing each other is formed to be inclined, and the height thereof is increased in the direction from the front side to the rear side.

Accordingly, the vertical portion 200 may be twisted and rotated with respect to the base coupling portion 470 .

Referring to FIGS. 9 to 12 , an example in which the vertical part 200 is torsionally rotated with respect to the base coupling part 470 by the above process and the folding process to be adjacent to the base 100 is viewed from the side is shown.

Referring to FIG. 9 , the manipulation unit 410 and the stopper coupling unit 420 are positioned to be spaced apart from the base 100 . In the above state, it will be understood that the manipulation unit 410 and the stopper coupling unit 420 are both coupled to the vertical unit 200 and the base coupling unit 470 , thereby limiting the rotation of the vertical unit 200 .

In addition, it will be understood that in the illustrated embodiment, a stopper (not shown) is inserted into the first stopper insertion hole 442a positioned at a relatively lower side.

Referring to FIG. 10 , a state in which the guardian presses the manipulation unit 410 and the stopper coupling unit 420 is shown. The manipulation unit 410 is moved downward by the pressure. In the above state, it will be understood that the stopper (not shown) is inserted into the second stopper insertion hole (not shown) positioned at the relatively upper side.

Referring to FIG. 11 , a state in which the vertical part 200 is folded toward the base 100 is shown.

As described above, each surface of the vertical portion 200 and the base coupling portion 470 facing each other is formed to be inclined. In addition, the outer housing 430 coupled to the base coupling part 470 is also inclined so that the upper end thereof increases from the front side to the rear side, similar to the base coupling part 470 .

Accordingly, the vertical portion 200 is torsionally rotated with respect to the base coupling portion 470 and the outer housing 430 and is moved toward the base 100 .

In the illustrated embodiment, the vertical portion 200 is twisted and rotated counterclockwise with respect to the protector located on the rear side of the cart portion 10 and is folded toward the base 100 . It will be understood that the torsional rotation of the vertical portion 200 may also be performed in the opposite direction.

Referring to FIG. 12 , a state in which the vertical part 200 is folded toward the base 100 is shown. In the above state, it will be understood that the first rotation member 441 is rotated by 180 degrees with respect to the second rotation member 451 .

On the other hand, the handle portion 300 held by the guardian is rotatably coupled to a position adjacent to the upper end of the vertical portion (200).

Accordingly, after the folding process of the vertical part 200 is completed, the handle part 300 may be rotated to be coupled to one side of the base 100, and to the front end in the illustrated embodiment.

Accordingly, the vertical portion 200 is not arbitrarily rotated in a direction away from the base 100 . As a result, safety accidents caused by arbitrary rotation of the vertical part 200 can be prevented.

Although the above has been described with reference to the preferred embodiment of the present invention, those of ordinary skill in the art can variously modify and change the present invention within the scope without departing from the spirit and scope of the present invention described in the claims below. You will understand that you can.

1: Smart Stroller
10: cart
20: seat portion
100: base
110: main wheel
120: sub wheel
200: vertical
210: seat support
300: handle part
400: folding (folding) unit
410: control panel
411: outsider
412: press
413: hollow
420: stopper coupling portion
421: body part
422: stopper insertion hole
422a: first stopper insertion hole
422b: second stopper insertion hole
423: space part
430: outer housing
431: receptacle
440: first rotating part
441: first rotation member
441a: first through hole
442: first bracket
450: second rotating part
451: second rotation member
451a: second through hole
452: second bracket
453: return spring
454: sealing member
460: rotation pin
461: wiring joiner
470: base coupling part
471: wiring receiving part
472: rotating part receiving part
480: wiring member

Claims (15)

Base;
a vertical portion coupled to the base and extending upwardly; and
It includes a folding (folding) portion coupled to the base and the vertical portion, respectively,
The folding part,
a base coupling part positioned between the vertical part and the base;
a first rotating part coupled to a lower surface of the vertical part;
a second rotating part coupled to an upper surface of the base coupling part;
Containing a rotation pin rotatably coupled to each of the first rotation portion and the second rotation portion,
cart. According to claim 1,
The lower surface of the vertical portion and the upper surface of the base coupling portion,
Is formed to be inclined so that the height of the front side and the height of the rear side are different,
cart. According to claim 1,
The first rotation unit,
A first rotation member coupled to the lower surface of the vertical portion, formed in a plate shape, and having a first through hole through which one side of the rotation pin is penetrated therein is formed,
The second rotation unit,
and a second rotation member coupled to the upper surface of the base coupling portion, formed in a plate shape, and having a second through hole through which the other side of the rotation pin is coupled therethrough,
Each surface of the first rotation member and the second rotation member facing each other is in contact with each other,
cart. 4. The method of claim 3,
The base coupling part,
The upper surface is formed to be inclined so that the height of the front side is low and the height of the rear side is low, and includes a rotating part receiving part recessed in the upper surface,
The second rotating member is accommodated in the rotating unit accommodating portion,
cart. 5. The method of claim 4,
When the second rotating member is accommodated in the rotating unit receiving portion,
One side of the second rotating member facing the first rotating member and the upper surface of the base coupling portion are located on the same surface,
cart. 5. The method of claim 4,
The base coupling part,
It includes a wiring accommodating part that is a space extending in the vertical direction therein,
The upper side of the wire accommodating part is in communication with the rotating part accommodating part,
cart. 7. The method of claim 6,
The rotation pin is formed to extend in one direction, and includes a wiring coupling hole formed therein through, and is partially accommodated in the rotation unit receiving portion,
The upper side of the wiring receiving part is in communication with the wiring coupling hole,
cart. 8. The method of claim 7,
Ends on both sides from which the rotation pin extends are formed to have a larger diameter than other parts of the rotation pin,
One end of the rotation pin is accommodated on the upper side of the wire receiving part, and the other end of the rotation pin is disposed to face the one end of the rotation pin with the first rotation member interposed therebetween,
cart. 9. The method of claim 8,
Between the one end of the rotation pin and the second rotation member, a return spring for elastically supporting the one end of the rotation pin is provided,
When the vertical part and the base coupling part are spaced apart, the rotation pin presses the return spring and moves toward the vertical part,
cart. 4. The method of claim 3,
The first rotation unit,
a first bracket positioned between the first rotation member and the second rotation member and coupled to the first rotation member;
The second rotation unit,
a second bracket positioned between the first bracket and the second rotation member, coupled to the second rotation member, and coupled to the first bracket;
cart. 11. The method of claim 10,
The first bracket and the second bracket,
It includes a plurality of teeth alternately formed along the outer periphery and a space formed between the teeth,
When the first bracket and the second bracket are coupled,
The toothed portion of any one of the first bracket and the second bracket is inserted into the space portion of the other one of the first bracket and the second bracket,
cart. 12. The method of claim 11,
When the vertical portion and the base coupling portion are spaced apart, the first bracket and the second bracket are spaced apart,
cart. According to claim 1,
The folding part,
It is located on the outside of the base coupling part and includes a manipulation part coupled to the base coupling part so as to be lifted up and down in the vertical direction,
The operation unit,
Moving between a first position coupled to both the vertical portion and the base coupling portion and a second position coupled only to the base coupling portion,
cart. 14. The method of claim 13,
The folding part,
It is coupled to the inside of the manipulation unit and moves together with the manipulation unit, and includes a plurality of stopper coupling units provided with a plurality of stopper insertion holes spaced apart in the vertical direction and formed therein;
The manipulation unit includes a pressing unit protruding in one direction,
The base coupling part,
A stopper that is movably coupled in a direction toward the manipulation unit and a direction opposite to the manipulation unit, and is inserted into or withdrawn from any one of the plurality of stopper insertion holes, comprising:
cart. 15. The method of claim 14,
When the manipulation unit is located in the first position,
The stopper is inserted and coupled to the stopper insertion hole located at a relatively lower side of the plurality of stopper insertion holes,
When the manipulation unit is located in the second position,
The stopper is inserted and coupled to the stopper insertion hole located at the relatively upper side of the plurality of stopper insertion holes,
cart.

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