KR-20260064270-A - Pushchair with automatic braking function

Abstract

The present invention relates to a stroller that automatically brakes when a user releases their grip, comprising: a main body unit that supports both sides of a seat portion enabling seating and is connected to a handle held by a user, and is rotatably coupled to a pair of first wheels positioned on the front side of the handle and a pair of second wheels positioned on the rear side of the handle to enable movement; a frame unit having a first reinforcing frame positioned between each first wheel and a second reinforcing frame positioned between each second wheel; and a braking unit having a switch portion installed on the handle and generating a switching signal when the user releases their grip on the handle, and a brake portion provided on the second reinforcing frame and including a locking bar that is driven according to the switching signal and is inserted between the spokes of each second wheel to enable braking of the second wheel.

Inventors

• 이주연
• 백민욱
• 최지훈
• 김인웅
• 허성진
• 임장군

Assignees

• 전주비전대학교산학협력단

Dates

Publication Date

20260507

Application Date

20241031

Claims (3)

1. This relates to a stroller that automatically brakes when the user releases the grip. A main body unit that supports both sides of a seat portion enabling seating, is connected to a handle held by a user, and is rotatably coupled to a pair of first wheels positioned on the front side of the handle and a pair of second wheels positioned on the rear side of the handle to enable movement; A frame unit having a first reinforcing frame positioned between each first wheel and a second reinforcing frame positioned between each second wheel; and A stroller having an automatic braking function comprising: a braking unit including a switch portion installed on the handle and generating a switching signal when the user releases the handle, and a brake portion provided on the second reinforcing frame and including a locking bar that is driven according to the switching signal and inserted between the spokes of each second wheel to enable braking of the second wheel.
2. In paragraph 1, The brake section of the above braking unit is, A power generating means comprising a motor that generates rotational force according to the above switching signal, and a gear provided on the rotation shaft of the motor and having a plurality of grooves formed along the circumferential direction on the outer side; A first moving bar having an end connected to a catch bar and protrusions formed along the longitudinal direction to mesh with the gear, and which moves linearly toward one of the second wheels when the gear rotates in one direction, thereby causing the catch bar to be drawn between the spokes; and A stroller having an automatic braking function comprising: a second moving bar positioned on the opposite side of the first moving bar with the gear between them, with protrusions formed along the length direction to mesh with the gear, and which allows the locking bar connected to the end to be inserted between the spokes provided on another second wheel while moving linearly in the opposite direction to the first moving bar when the gear rotates in one direction.
3. In paragraph 2, The locking bar of the above-mentioned brake part is, A connecting part fixed to the end of the first moving bar and the second moving bar facing each second wheel; and A stroller having an automatic braking function, comprising: a structure protruding toward the second wheel from the center side of the above-mentioned connecting part, and a locking part that is inserted between the spokes during the linear movement of the first moving bar and the second moving bar.

Description

Pushchair with automatic braking function The present invention relates to a stroller having an automatic braking function, and more specifically, to a stroller having an automatic braking function with an improved structure so that it can automatically brake when the stroller is released on a sloped road. A stroller refers to a carrying device operated by a guardian for infants who are unable to walk or toddlers who have difficulty walking continuously. Generally, a stroller (1) comprises a seat (11) that enables the infant to sit, a main body (12) that supports the seat, wheels (13) that are rotatably installed on the main body and enable the movement of the main body, and a handle (14) provided on the main body and held by a user. The stroller enables the movement of the main body (12) by rotating the wheels (13) through the movement of a user holding the handle (14), thereby allowing the infant sitting or lying down in the seat (11) to be moved easily. Conventional strollers have the effect of enabling the movement of infants while reducing the user's physical exertion, but they have the problem that if the user lets go of the handle on a sloping road or sidewalk, braking does not occur, which can cause an accident. Prior art includes Published Patent Application No. 10-2016-0039047. FIG. 1 is a drawing for explaining a stroller according to the prior art. FIG. 2 is a drawing illustrating a stroller having an automatic braking function according to an embodiment of the present invention. FIG. 3 is a drawing for explaining a braking unit employed in an embodiment of the present invention. FIG. 4 is a drawing illustrating the state before the braking unit employed in one embodiment of the present invention is driven. FIG. 5 is a drawing illustrating the state in which a stroller is braked by a braking unit employed in an embodiment of the present invention. FIG. 6 is a drawing illustrating a braking unit employed in another embodiment of the present invention, for explaining a stroller having an automatic braking function according to another embodiment of the present invention. In order to clarify the understanding of the present invention in the following description, descriptions of known technologies regarding the features of the present invention will be omitted. The following embodiments are detailed descriptions to aid in understanding the present invention and are not intended to limit the scope of the rights of the present invention. Accordingly, equivalent inventions that perform the same function as the present invention will also fall within the scope of the rights of the present invention. Furthermore, in the following description, identical identification symbols denote identical configurations, and unnecessary redundant descriptions and descriptions of known technologies are omitted. Additionally, descriptions of each embodiment of the present invention below that overlap with the description of the technology forming the background of the invention are also omitted. Hereinafter, a stroller having an automatic braking function according to an embodiment of the present invention will be described in detail with reference to the attached drawings. FIG. 2 is a drawing illustrating a stroller having an automatic braking function according to an embodiment of the present invention, FIG. 3 is a drawing for explaining a braking unit employed in an embodiment of the present invention, FIG. 4 is a drawing illustrating the state before the braking unit employed in an embodiment of the present invention is driven, and FIG. 5 is a drawing illustrating the state in which the stroller is braked by the braking unit employed in an embodiment of the present invention. As illustrated in these drawings, a stroller with an automatic braking function according to one embodiment of the present invention relates to a stroller that automatically brakes when the user's grip is released, and comprises a main body unit (100), a frame unit (200), and a braking unit (300). The stroller according to this embodiment can not only enable movement while infants and toddlers are seated, but also enable movement for people with mobility impairments. As shown in FIG. 2, the main body unit (100) supports both sides of a seat portion (20) that enables seating for infants and people with disabilities, and a handle (30) that is grasped by a user is connected to the upper side relative to the seat portion. The main body unit (100) allows a pair of first wheels (40) and a pair of second wheels (50) to be installed on the lower side relative to the seat portion (20). Here, the first wheels (40) are formed as a pair, positioned on the front side of the handle (30) relative to the handle, and are rotatably installed on the lower side of the main body unit (100). In addition, the second wheel (50) is positioned on the rear side of the handle (30) with respect to the handle, and is spaced apart from the first wheel (40) to form a gap, an