Push rod of stroller and stroller

Abstract

The stroller push rod comprises a push rod vertical rod, a push handle rod and at least one pressure sensor capable of being connected with a controller, and further comprises a push handle holding body installed on the push handle rod, one end of the pressure sensor is fixed to the push handle rod, and the other end of the pressure sensor is fixed to the push handle holding body. In the pushing or pulling process of a pushing person, the pushing person applies force to the pushing handle holding body, so that the whole pushing handle holding body has potential energy of displacement relative to the pushing handle rod, all the pressure sensors between the pushing handle rod and the pushing handle holding body can accurately sense corresponding stress, and therefore the electric motor is effectively controlled to achieve effective auxiliary driving assistance.

Description

Technical Field

[0001] The utility model relates to a push rod for a child stroller and a child stroller. Background Art

[0002] Strollers provide great convenience for people to carry small children for outdoor activities, but they are mostly controlled by manpower to move forward or backward. When the load is heavy, such as when driving uphill or on gravel roads, it will be difficult to push the stroller; and when driving downhill, manpower is needed to overcome the acceleration of the stroller. With the development of the economy and the advancement of technology, people's demand for strollers has become diversified, and strollers driven by electric motors will surely become more and more popular in the market.

[0003] The technology of electric motor assisted driving of child strollers is already known, such as a child stroller disclosed in authorization announcement number CN 205554286 U, and a child stroller push rod and a child stroller disclosed in authorization announcement number CN 210478798 U. However, none of the above-mentioned public documents discloses a solution for ensuring that the force of the pusher is accurately and effectively sensed by the pressure sensor, and as a power-assisting function of electric assisted driving, it is very important to accurately and effectively sense the force of the pusher. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a push rod for a child stroller.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a push rod for a child stroller, including a push rod vertical rod, a push handle rod, at least one pressure sensor that can be connected to a controller, and also including a push handle body installed on the push handle rod, one end of the pressure sensor is fixed to the push handle rod, and the other end is fixed to the push handle body.

[0006] In some embodiments, the push handle body is sleeved on the push handle rod, and the pressure sensor is located between an outer wall of the push handle rod and an inner wall of the push handle body.

[0007] In some embodiments, the push handle body includes a first handle body with a cross-section that is wrapped around the push handle rod, and a second handle body that is assembled at the opening of the first handle body to wrap around the push handle rod. One end of each pressure sensor is fixed to the push handle rod, and the other end is fixed to the first handle body or the second handle body.

[0008] In some embodiments, the length extension directions of the first handle body and the second handle body are respectively consistent with the length extension directions of the push handle rod, the two edges of the groove of the first handle body respectively have first mounting parts, and the two side edges of the second handle body respectively have second mounting parts, one of the first mounting part and the second mounting part is a long groove, and the other is a convex edge, and the first handle body and the second handle body are fit together through the first mounting part and the second mounting part to form a tubular push handle body.

[0009] In some embodiments, the push handle rod includes a push handle cross bar extending left and right, a push handle transition bent rod located at both ends of the push handle cross bar and connected to the upper ends of the push rod vertical rods on both sides, and the push handle body includes a push-pull cross bar sleeve mounted on the corresponding push handle cross bar, and a push-pull bent rod sleeve located on both sides of the push-pull cross bar sleeve and respectively mounted on the corresponding push handle transition bent rods.

[0010] In some embodiments, the angle α of the push-pull bending rod sleeve is 40°-46°.

[0011] In some embodiments, a movable gap is formed between the push handle rod and the push handle body, one end of the pressure sensor is fixed to the outer surface of the push handle cross bar of the push handle rod through a first mounting block, and the other end is fixed to the inner wall groove of the push-pull cross bar sleeve of the push handle body through a second mounting block, and the pressure sensor and the first mounting block are located in the movable gap.

[0012] In some embodiments, the push handle body is relatively displaceably disposed on the push handle rod, and the pressure sensor is a strain gauge pressure sensor.

[0013] In some embodiments, the length extension direction of the push handle body is consistent with the length extension direction of the push handle rod, and the push handle rod and the push handle body are respectively made of hard materials.

[0014] The technical problem to be solved by the utility model is to provide a child stroller which can effectively sense the manpower of the stroller and thus accurately start the electric motor to assist.

[0015] In order to solve the above technical problems, the technical solution adopted by the utility model is: a child stroller, comprising a frame with a seat installed, the frame includes a child stroller push rod as described in any one of the above items, the child stroller also includes wheels arranged on the frame, at least one electric motor for controlling the wheels, and the controller arranged on the frame and connected to the pressure sensor and the electric motor respectively, and the controller controls the electric motor according to the signal collected by the pressure sensor.

[0016] The scope of the utility model is not limited to the technical solutions formed by the specific combination of the above technical features, but also includes other technical solutions formed by any combination of the above technical features or their equivalent features. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

[0017] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art: during the process of pushing or pulling the cart, the pusher applies force to the cart handle body, causing the cart handle body as a whole to have potential energy for displacement relative to the push handle rod, so that all pressure sensors between the push handle rod and the cart handle body can accurately sense the corresponding force, thereby effectively controlling the electric motor to achieve effective auxiliary driving assistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional schematic diagram of the push rod of a child stroller after it is disassembled and exploded;

[0019] Figure 2 This is a front view of the push rod of a child stroller after it was disassembled and exploded;

[0020] Figure 3 This is a front view of the push rod of a child stroller;

[0021] Among them: 1. push rod; 1a. push handle rod; 1b. push rod vertical rod; 2. push handle body; 21. first handle body; 22. second handle body; 2a. push-pull horizontal rod sleeve; 2b. push-pull curved rod sleeve; 3. pressure sensor; 31. first mounting block; 32. second mounting block; 4. display screen. DETAILED DESCRIPTION

[0022] A baby stroller comprises a frame with a seat installed and wheels arranged on the frame.

[0023] The baby stroller can be a common baby stroller on the market, or a child umbrella handlebar stroller, a child pedal tricycle, a child pedal bicycle, etc. As long as a push rod of the baby stroller can be installed on the frame, and the push rod has a push handle for the pusher to hold by hand, it is applicable.

[0024] The stroller has a frame including a push rod 1 and at least one electric motor for controlling wheels. The push rod 1 is provided with a pressure sensor 3 for collecting the pressure applied by the pusher's hand. The frame is provided with a controller respectively connected to the pressure sensor 3 and the electric motor. The controller controls the electric motor according to the signal collected by the pressure sensor 3.

[0025] The following is a detailed description of the push rod for the child stroller in conjunction with the accompanying drawings:

[0026] like Figure 1-3 As shown, the push rod 1 of the child stroller comprises:

[0027] There are two push rod vertical rods 1b, located at the left and right sides respectively;

[0028] The push handle rod 1a is the grip section for the pusher to hold during pushing. It is connected between the upper ends of the push rod vertical rods 1b on both sides and is connected to the push rod brackets 1b on both sides to form a whole. The push handle rod 1a includes a push handle cross rod extending left and right, and a push handle transition bent rod located at both ends of the push handle cross rod and connected to the upper ends of the push rod vertical rods 1b on both sides.

[0029] The push rod 1 of the child stroller further comprises a push handle body 2. In this embodiment, the push handle body 2 is tubular and sleeved on the push handle bar 1a.

[0030] The push handle body 2, in terms of the installation structure, includes a first grip body 21 with a C-shaped cross section wrapped around the push handle rod 1a, and a second grip body 22 assembled at the opening of the first grip body 21 to wrap around the push handle rod 1a. The detailed assembly structure is: the two edges of the C-shaped notch of the first grip body 21 respectively have relatively protruding convex edges along the length direction, and the two side edges of the second grip body 22 respectively have long grooves along the length direction. The first grip body 21 and the second grip body 22 are inserted into the corresponding long grooves through the convex edges to fit together to form a tubular push handle body 2, that is, the first grip body 21 and the second grip body 22 are assembled to form a rigid tube sleeve that is sleeved on the push handle rod 1a.

[0031] In terms of its shape and structure, the handle body 2 includes a push-pull cross bar sleeve 2a which is sleeved on the outside of the corresponding push handle cross bar for the pusher to hold, so as to accurately sense the push and pull force in the front and rear directions. It also includes a push-pull curved rod sleeve 2b which is located on both sides of the push-pull cross bar sleeve and is respectively sleeved on the corresponding push handle transition curved rods for the pusher to hold at the corner of the push rod, so as to facilitate the pressure sensor 3 to accurately sense the push and pull force in the left and right directions and the front and rear directions. In this embodiment, the angle α of the push-pull curved rod sleeve 2b is 43°, which is convenient for installation.

[0032] In this embodiment, two pressure sensors 3 are provided, and each pressure sensor 3 is respectively arranged in the movable gap on the left and right sides between the push handle cross bar of the push handle rod 1a and the push-pull cross bar sleeve 2a of the push handle body 2. The movable gap allows the push handle body 2 to have space for overall displacement relative to the push handle rod 1a. Another possibility is that the inner surface of the push handle body 2 is a sponge layer made of a flexible material. In this case, there is no gap between the push handle body 2 and the push handle rod 1a, but the sponge layer also allows the push handle body 2 to have space for overall displacement relative to the push handle rod 1a.

[0033] One end of the pressure sensor 3 is fixed to the outer surface of the push handle cross bar of the push handle rod 1a through a first mounting block 31 , and the other end is fixed to the inner wall of the push-pull cross bar sleeve 2a of the push handle body 2 through a second mounting block 32 .

[0034] In this embodiment, the second mounting block 32 is embedded in the inner wall mounting groove of the second handle body 22, and the pressure sensor 3 and the first mounting block 31 are located in the movable gap between the push handle cross bar and the push-pull cross bar sleeve 2a. In this embodiment, a strain gauge pressure sensor is used, and the two pressure sensors 3 are respectively connected to the controller.

[0035] When the pusher applies force to the push handle body, the push handle body is displaced as a whole relative to the push handle rod in the front-to-back direction and / or left-to-right direction within the range of the movable gap, and the second mounting block of the pressure sensor moves into or away from the gap, so that the strain gauge of the pressure sensor is deformed so that the corresponding force can be accurately sensed. That is, even if the user only applies force to the straight section or the curved part of the push rod, it can affect the entire push handle body 2, thereby causing the pressure sensor to generate strain, which can also be effectively sensed, thereby effectively controlling the electric motor to achieve effective auxiliary driving assistance.

[0036] In this embodiment, a display screen 4 is installed on the push handle cross bar of the push handle rod 1a through the push handle body 2, and the display screen 4 is electrically connected to the controller.

[0037] In this embodiment, the first grip body 21 and the second grip body 22 are assembled into one body through convex edges and long grooves, which is convenient for installation, and the push handle body 2 is made of hard materials, such as assembled hard plastic sleeves, stainless steel sleeves, etc. As a push-pull sheath component with stable shape and rigidity, the push handle body 2 not only covers the push handle crossbar of the push rod, but also covers part of the push handle transition curved rods on both sides.

[0038] When the user pushes or pulls the push handle body 2 at any position, the push handle body 2 as a whole can generate potential energy relative to the push handle rod 1a and shift as a whole, thereby causing the strain gauge on the pressure sensor to generate strain, so that the pressure sensor can sense it quickly, accurately and effectively, thereby effectively controlling the electric motor to achieve effective auxiliary driving assistance.

[0039] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A push rod for a child stroller, comprising a push rod vertical rod (1b), a push handle rod (1a), and at least one pressure sensor (3) that can be connected to a controller, characterized in that: It also includes a push handle body (2) mounted on the push handle rod (1a), one end of the pressure sensor (3) being fixed on the push handle rod (1a), and the other end being fixed on the push handle body (2).

2. The push rod for a child stroller according to claim 1, characterized in that: The push handle body (2) is sleeved on the push handle rod (1a), and the pressure sensor (3) is located between the outer side wall of the push handle rod (1a) and the inner side wall of the push handle body (2).

3. The push rod for a child stroller according to claim 2, characterized in that: The push handle body (2) comprises a first handle body (21) having a C-shaped cross section and wrapped around the push handle rod (1a), and a second handle body (22) assembled at the opening of the first handle body (21) and wrapping around the push handle rod (1a). One end of each of the pressure sensors (3) is fixed to the push handle rod (1a), and the other end is fixed to the first handle body (21) or the second handle body (22).

4. The push rod for a child stroller according to claim 3, characterized in that: The length extension direction of the first handle body (21) and the second handle body (22) are respectively consistent with the length extension direction of the push handle rod (1a); the two edges of the C-shaped notch of the first handle body (21) are respectively provided with first mounting parts, and the two side edges of the second handle body (22) are respectively provided with second mounting parts; one of the first mounting part and the second mounting part is a long groove, and the other is a convex edge; the first handle body (21) and the second handle body (22) are fitted together through the first mounting part and the second mounting part to form a tubular push handle body (2).

5. The push rod for a child stroller according to claim 1, characterized in that: The push handle rod (1a) comprises a push handle horizontal rod extending left and right, and a push handle transition curved rod located at both ends of the push handle horizontal rod and connected to the upper ends of the push handle vertical rods (1b) on both sides; the push handle body (2) comprises a push-pull horizontal rod sleeve (2a) sleeved on the outside of the corresponding push handle horizontal rod, and a push-pull curved rod sleeve (2b) located on both sides of the push-pull horizontal rod sleeve and sleeved on the corresponding push handle transition curved rods.

6. The push rod for a child stroller according to claim 5, characterized in that: The angle α of the push-pull curved rod sleeve (2b) is 40°-46°.

7. The push rod for a child stroller according to claim 5, characterized in that: An active gap is formed between the push handle rod (1a) and the push handle body (2); one end of the pressure sensor (3) is fixed to the outer surface of the push handle cross bar of the push handle rod (1a) via a first mounting block (31); the other end is fixed to the inner wall groove of the push-pull cross bar sleeve (2a) of the push handle body (2) via a second mounting block (32); the pressure sensor (3) and the first mounting block (31) are located in the active gap.

8. The push rod for a child stroller according to claim 1, characterized in that: The push handle body (2) is relatively displaceably arranged on the push handle rod (1a), and the pressure sensor (3) is a strain gauge pressure sensor.

9. The push rod for a child stroller according to claim 1, characterized in that: The length extension direction of the push handle body (2) is consistent with the length extension direction of the push handle rod (1a), and the push handle rod (1a) and the push handle body (2) are respectively made of hard materials.

10. A baby stroller, characterized in that: The invention comprises a frame with a seat installed, the frame including a push rod (1) of any one of claims 1 to 9, the stroller also comprising wheels arranged on the frame, at least one electric motor for controlling the wheels, and a controller arranged on the frame and respectively connected to the pressure sensor (3) and the electric motor, wherein the controller controls the electric motor according to a signal collected by the pressure sensor (3).

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