Brake operating system and baby carriage

Abstract

The utility model discloses a baby carriage brake operation system which comprises a carriage frame, a wheel assembly is arranged at the bottom of the carriage frame, the wheel assembly is provided with a brake assembly, an operation portion of the brake assembly is connected with an inhaul cable, the free end of the inhaul cable is connected with a lock pin, the lock pin is longitudinally arranged on the wheel assembly in a sliding mode, and a sliding rod and an operation block are arranged on the carriage frame. The sliding rod is horizontally arranged on the frame in a sliding mode, and the control block is longitudinally arranged on the frame in a sliding mode. One end of the sliding rod is in transmission connection with the lock pin, and the lock pin is configured to longitudinally ascend and descend along with horizontal reciprocating sliding of the sliding rod. The other end of the sliding rod makes contact with the control block, and the sliding rod is configured to horizontally slide in a reciprocating mode along with longitudinal lifting of the control block. The beneficial effects of the utility model are that the brake operation part is uniformly stressed and is not easy to damage; in the braking process, in-situ braking can be achieved only by applying force to the baby carriage in the longitudinal direction, the baby carriage cannot shake front and back and left and right, parents do not need to hold the baby carriage with hands for cooperation, and the braking operation process is simplified.

Description

Technical Field

[0001] The utility model relates to a manual trolley, in particular to accessories or components specifically applicable to baby carriages. Background Art

[0002] Baby carriages provide great convenience for the travel of infants and are recognized by many families. The basic structure of a baby carriage includes a frame, wheels and a seat; generally, there are four wheels, which are arranged at the bottom of the frame; the wheels can be fixed wheels or universal wheels. No matter which type of wheel it is, it should have a braking function.

[0003] The braking function of the wheels is realized by the braking components configured on themselves. In the prior art, there are various specific structures of the braking components. The fundamental purpose is to prevent the wheels from rotating by operating the braking components. The part that prevents the wheels from rotating is called the working part, and the part that can operate the braking components is called the operating part. After the braking components and the wheels are configured as a whole, they are installed on the frame, and then a braking operation system is configured on the frame to act on the operating part of the braking components so as to operate the brakes.

[0004] All the braking operation systems in the prior art adopt a rotary braking operation system. This system includes a rotating component that limits the rotation angle. When a parent operates (generally by foot) the rotating component to rotate reciprocally around its rotation center, the rotating component drives a series of transmission mechanism components to move, and finally drives the operating part of the braking components to move. And the part of the rotating component far from its rotation center is subjected to a larger torque, which leads to two defects:

[0005] ①. The rotating component is at risk of cracking and damage; especially for rotating components with less material and lower cost, this risk will be higher;

[0006] ②. During the rotation of the rotating component, it will inevitably generate component forces in the front-back direction or left-right direction on the baby carriage, which will make the baby carriage prone to shaking. When braking, the parent also needs to hold it by hand to cooperate, otherwise it is difficult to achieve in-situ braking; this is also not conducive to simplifying the braking operation process. Content of the Utility Model

[0007] To solve the above two technical problems, the utility model provides a braking operation system for a baby carriage, which includes a frame. A wheel assembly is configured at the bottom of the frame. The wheel assembly is configured with a braking component. The working part of the braking component acts on the wheel assembly. The key lies in:

[0008] The operating part of the brake assembly is connected with a cable, the free end of the cable is connected with a locking pin, the locking pin is longitudinally slidably arranged on the wheel assembly, and when the locking pin reciprocates, it drives the brake assembly to switch. A sliding rod and a control block are arranged on the frame, the sliding rod is horizontally slidably arranged on the frame, and the control block is longitudinally slidably arranged on the frame;

[0009] One end of the sliding rod is in transmission connection with the locking pin, and the locking pin is configured to longitudinally lift and lower as the sliding rod reciprocates horizontally;

[0010] The other end of the sliding rod contacts the control block, and the sliding rod is configured to reciprocate horizontally as the control block longitudinally lifts and lowers.

[0011] The cable can be selected as a wire rope, which is convenient for routing and layout on the wheel assembly; and the locking pin should be of a hard structure for easy operation, and the cable and the locking pin are fixedly connected;

[0012] The control block cooperates with the sliding rod to convert the longitudinal sliding of the control block into the horizontal sliding of the sliding rod, and the sliding rod then cooperates with the locking pin to convert the horizontal sliding of the sliding rod into the longitudinal sliding of the locking pin, so as to operate the brake mechanism to brake;

[0013] After the control block is longitudinally slidably arranged, the parent only needs to apply a longitudinal force to it to operate the brake. The stroller will not be subjected to component forces in the front-back and left-right directions, the stroller will not shake, and there is no need for the parent to hold it by hand to achieve in-situ braking, which simplifies the brake operation process; and the control block is evenly stressed and is relatively not easy to be damaged. Brief Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the stroller of the present invention;

[0015] Figure 2 is a three-dimensional structural diagram of the wheel assembly B;

[0016] Figure 3 is a sectional structural diagram of the wheel assembly B;

[0017] Figure 4 is a three-dimensional schematic diagram of the cooperation relationship among the control block 2, the sliding rod 1, and the locking pin E;

[0018] Figure 5 is a sectional schematic diagram of the cooperation relationship among the control block 2, the sliding rod 1, and the locking pin E;

[0019] Figure 6 is a schematic diagram of the push-button self-locking structure arranged on the control block 2. Detailed Description of the Embodiment

[0020] The present invention will be further described below in conjunction with the embodiments and the drawings.

[0021] As shown Figure 1-6 in the figure, a braking operation system for a baby stroller includes a frame A, and four wheel assemblies B are arranged at the bottom of the frame A. Two of the wheel assemblies B are located at the front of the frame A as front wheels, and two of the wheel assemblies B are located at the rear of the frame A as rear wheels;

[0022] Each of the wheel assemblies B is respectively provided with a brake assembly C. The working part of the brake assembly C acts on the wheel assembly B. The operating part of the brake assembly C is connected with a cable D. The free end of the cable D is connected with a locking pin E. The locking pin E is longitudinally slidably arranged on the wheel assembly B. When the locking pin E reciprocates, it drives the brake assembly C to switch on and off;

[0023] A specific structure and installation method of a wheel assembly B and a brake assembly C are as follows:

[0024] The wheel assembly B includes a wheel axle B1, wheel spokes B2, a tire B3 and a wheel fork B4;

[0025] The center of the wheel spokes B2 is fixed on the outer wall of the wheel axle B1, and the tire B3 is sleeved on the outer ring of the wheel spokes B2; the wheel fork B4 includes a fork seat and two fork arms. The two fork arms are arranged in parallel and facing each other. The two fork arms are arranged vertically (or vertically inclined). The upper ends of the two fork arms are fixedly connected to the fork seat at the same time; the wheel spokes B2 and the tire B3 are between the two fork arms, and both ends of the wheel axle B1 are respectively installed on the fork arms through bearings.

[0026] The brake assembly C includes a brake block C1. The brake block C1 is slidably assembled on the fork arm. Preferably, the brake block C1 is slidably assembled along the radial direction of the wheel spokes B2; a plurality of brake grooves are circumferentially arranged on the outer wall of the wheel axle B1. A clamping portion is arranged on the brake block C1. When the clamping portion falls into any one of the brake grooves, braking can be achieved; according to the position where the brake block C1 is arranged, a relief opening can be correspondingly arranged on the fork arm. The free part of the brake block C1 is connected with the cable D. The part of the brake block C1 in contact with the brake groove (i.e., the clamping portion) is regarded as its working part, and any other free part of the brake block C1 connected with the cable D is regarded as its operating part.

[0027] The upper end face of the fork seat extends longitudinally downward to form a lock pin assembly hole, and the lock pin E is arranged in the lock pin assembly hole. The lock pin E can be of one-piece or segmented type. The bottom of the lock pin assembly hole is also connected with a cable perforation extending towards the brake block C1. A part of the cable perforation is located within the fork seat, and the other part is located within the fork arm. The opening position, shape, and orientation of the cable perforation can be in various forms, mainly to keep the cable internal and not exposed. The lower end of the lock pin E is connected to the cable D.

[0028] In this embodiment, a slide bar 1 and an operating block 2 are arranged on the vehicle frame A. The slide bar 1 is horizontally slidably arranged on the vehicle frame A, and one end of the slide bar 1 is in transmission connection with the upper end of the lock pin E. The lock pin E is configured to longitudinally lift and lower along with the horizontal reciprocating sliding of the slide bar 1;

[0029] The operating block 2 is longitudinally slidably arranged on the vehicle frame A. The other end of the slide bar 1 contacts the operating block 2. The slide bar 1 is configured to horizontally reciprocate along with the longitudinal lifting and lowering of the operating block 2.

[0030] Thus, parents can brake by longitudinally and linearly operating the operating block 2.

[0031] A specific way to realize that the lock pin E is configured to longitudinally lift and lower along with the horizontal reciprocating sliding of the slide bar 1 is: a first wedge mechanism is arranged between one end of the slide bar 1 and the lock pin E, and the slide bar 1 and the lock pin E are in transmission connection through the first wedge mechanism; at this time, in order to enable the lock pin E to automatically reset and contact the brake, the lock pin E is configured with a first elastic resetting member (such as a spring). The first elastic resetting member acts on the lock pin E, and the acting direction of the first elastic resetting member is the same as the sliding direction of the lock pin E (referring to the structure of the above-mentioned brake assembly C and the orientation of the lock pin E, the acting direction of the first elastic resetting member should be upward, and at this time, the first elastic resetting member can adopt a compression spring).

[0032] A specific way to realize that the slide bar 1 is configured to horizontally reciprocate along with the longitudinal lifting and lowering of the operating block 2 is: a second wedge mechanism is arranged between one end of the slide bar 1 and the operating block 2, and the slide bar 1 and the operating block 2 are in transmission connection through the second wedge mechanism; at this time, in order to enable the operating block 2 to automatically reset, the operating block 2 is configured with a second elastic resetting member (such as a spring). The second elastic resetting member acts on the operating block 2, and the acting direction of the second elastic resetting member is the same as the sliding direction (longitudinal) of the operating block 2.

[0033] To maintain the two states of the braking state and the release of the brake, the operating block 2 is further configured with a push-button self-locking structure, which can switch the operating block 2 between two designed positions in the longitudinal sliding direction and keep it in the pressed state or the popped-up state. There are various specific structures of the push-button self-locking structure in the prior art, and the names of each specific structure may be different. For example, it is called a push-push switch, a self-locking switch, etc. As a basic structure, it is widely used in fields such as the pressing mechanism of a ballpoint pen tip and electrical switches. Generally speaking, this structure has the function of switching and maintaining the first state after being pressed once, and then switching and maintaining the second state after being pressed again, and the first and second states can be cyclically switched. A more specific example is that the push-button self-locking structure includes a circular groove formed by sequentially connecting four track grooves end to end. A hook pin is arranged in the circular groove. The size of each track groove is designed so that the hook pin can only move unidirectionally in the circular groove, and the hook pin can stay at the connecting part of two adjacent track grooves. Other components, structures, connection methods, etc. that match the circular groove and the hook pin are all prior art and will not be elaborated here.

[0034] A cross tube A1 is arranged at the bottom of the frame A. The sliding rod 1 is assembled in the cross tube A1, and the operating block 2 is assembled on the tube wall of the cross tube A1. The cross tube A1 can strengthen the strength of the frame and hide the sliding rod 1 and the operating block 2.

[0035] To further simplify the operation, the two front wheels can be designed to brake simultaneously, and the two rear wheels can also be designed to brake simultaneously. Wheel assemblies B are respectively arranged on the frame A near both ends of the cross tube A1. A sliding rod 1 is respectively arranged in the cross tube A1 corresponding to each wheel assembly B, and the operating block 2 is in transmission connection with each sliding rod 1 in the corresponding cross tube A1.

[0036] Embodiment 2:

[0037] As Figure 1-6 shown, a baby carriage includes the baby carriage braking operation system described in Embodiment 1. A seat is further arranged on the frame A; a push handle is arranged on the upper part of the frame A; and an armrest is arranged in the middle of the frame A.

[0038] Beneficial effects: By adopting the technical solution of the present utility model, the braking operation component (operating block) is uniformly stressed and not easily damaged; during the braking process, only longitudinal force needs to be applied to the baby carriage to achieve in-situ braking. The baby carriage will not shake forward and backward or left and right, and there is no need for the parent to hold it by hand for cooperation, which simplifies the braking operation process.

[0039] Finally, it should be noted that the above description is only the preferred embodiment of the present utility model. Under the inspiration of the present utility model, those of ordinary skill in the art can make various similar representations without violating the purpose and claims of the present utility model. Such transformations all fall within the protection scope of the present utility model.

Claims

1. A brake operating system, comprising a frame (A), a wheel assembly (B) being arranged at the bottom of the frame (A), the wheel assembly (B) being arranged with a brake assembly (C), a working part of the brake assembly (C) acting on the wheel assembly (B), characterized in that: The operating part of the brake assembly (C) is connected to a cable (D), the free end of the cable (D) is connected to a lock pin (E), the lock pin (E) is longitudinally slidably arranged on the wheel assembly (B), and the lock pin (E) drives the brake assembly (C) to switch when it slides back and forth; A slide bar (1) and a control block (2) are arranged on the frame (A); the slide bar (1) is arranged on the frame (A) in a horizontal sliding manner, and the control block (2) is arranged on the frame (A) in a longitudinal sliding manner; One end of the slide bar (1) is in driving connection with the lock pin (E), and the lock pin (E) is configured to rise and fall longitudinally as the slide bar (1) slides back and forth horizontally; The other end of the slide bar (1) is in contact with the operating block (2), and the slide bar (1) is configured to slide back and forth horizontally as the operating block (2) moves vertically upward or downward.

2. The brake operating system according to claim 1, characterized in that: A first inclined wedge mechanism is provided between one end of the slide bar (1) and the lock pin (E), and the slide bar (1) and the lock pin (E) are transmission-connected via the first inclined wedge mechanism; The locking pin (E) is provided with a first elastic reset member, which acts on the locking pin (E), and the action direction of the first elastic reset member is consistent with the sliding direction of the locking pin (E).

3. The brake operating system according to claim 1 or 2, characterized in that: A second inclined wedge mechanism is provided between one end of the slide bar (1) and the operating block (2), and the slide bar (1) and the operating block (2) are connected in transmission via the second inclined wedge mechanism; The operating block (2) is provided with a second elastic return member, which acts on the operating block (2), and the action direction of the second elastic return member is consistent with the sliding direction of the operating block (2).

4. The brake operating system according to claim 1 or 2, characterized in that: The operating block (2) is also provided with a push-and-press self-locking structure, which enables the operating block (2) to maintain a pressed state or an upward state.

5. The brake operating system according to claim 1, characterized in that: A transverse tube (A1) is arranged at the bottom of the frame (A), the slide bar (1) is mounted in the transverse tube (A1), and the control block (2) is mounted on the tube wall of the transverse tube (A1).

6. The brake operating system according to claim 5, characterized in that: The wheel assemblies (B) are respectively arranged on the frame (A) near the two ends of the transverse tube (A1), and the sliding rod (1) is respectively arranged in the transverse tube (A1) corresponding to each wheel assembly (B), and the control block (2) is drivingly connected to each sliding rod (1) in the corresponding transverse tube (A1).

7. A baby stroller, characterized in that: Comprising the brake operating system as described in any one of claims 1-6.

8. The baby stroller according to claim 7, characterized in that: The frame (A) is also provided with a seat.

9. The baby stroller according to claim 7, characterized in that: A push handle is disposed on the upper portion of the frame (A).

10. The baby stroller according to claim 7, characterized in that: A handrail is arranged in the middle of the frame (A).

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