CN104057996A - Braking device of baby stroller - Google Patents

Abstract

The invention discloses a brake device for a baby stroller, which comprises a frame and a handlebar. The lower part of the frame is provided with a support frame, the support frame is connected with a connecting shaft through a bearing, the upper part of the support frame is connected with the handlebar, and the two sides of the connecting shaft are provided with There are rear wheels, the support frame between the rear wheels is provided with a brake mechanism, the handlebar is provided with a brake operating handle, the operating handle is connected to the rear end of the brake line, the front end of the brake line is connected to the brake mechanism, and the outer casing of the brake line It is connected with the brake wire support end arranged on the brake housing. The invention is easy to operate, actively brakes when the brake mechanism is in a parking state, avoids the car from slipping on a slope, has high braking reliability, and improves the safety of the trolley.

Description

Baby stroller brake device

technical field

The invention relates to the technical field of baby strollers, in particular to a baby stroller which is mostly a pedal brake device.

Background technique

Most of the baby strollers in the prior art are foot-operated brake devices. When parking, the brake device needs to be stepped on actively. The brake is inconvenient. Sometimes the user forgets to brake when parking, especially when parking on a slope, it is easy to slip the car. The safety is poor, and unsafe factors or even accidents are prone to occur. At the same time, the foot brake mechanism in the prior art is relatively small and inconvenient to operate.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned problems existing in the prior art, and to provide a braking device for baby strollers; the present invention is easy to operate, and has high braking reliability. slip car.

The technical scheme that the present invention solves technical problem is:

A brake device for a baby stroller, comprising a frame and a handlebar. The lower part of the frame is provided with a support frame, the support frame is connected to a connecting shaft through a bearing, the upper part of the support frame is connected to the handlebar, and rear wheels are provided on both sides of the connecting shaft. The support frame between the rear wheels is provided with a brake mechanism, the handlebar is provided with a brake operating handle, the operating handle is connected to the rear end of the brake line, the front end of the brake line is connected to the brake mechanism, and the outer sleeve of the brake line is connected to the brake line. The brake line support end of the housing is connected.

The brake mechanism includes a brake housing, which is connected to the support frame. The brake housing is a cylindrical groove with an opening at one axial end and a closed end face at one end. The axis of the cylindrical groove coincides with the axis of the rear wheel. The closed end face is provided with a first connection hole and a second connection hole with the axis as a symmetric line. The first connection hole is provided with a gear fixing shaft, and the second connection hole is provided with a camshaft. The camshaft protrudes from the end surface of the brake housing. The outer side of the brake line is connected to the rear end of the brake line connecting rod, and the front end of the brake line connecting rod is connected to the front end of the brake line. The inner cavity of the cylindrical groove is provided with an external gear, a first internal gear, and a second internal gear. The inner hole is connected with the connecting shaft, the external gear meshes with the first internal gear and the second internal gear, the first internal gear and the second internal gear are connected with the outer shell, and the first internal gear and the second internal gear It is a semi-cylindrical ring structure, the inner surface of the semi-cylindrical ring structure is provided with a protruding inner cylindrical surface, and the inner cylindrical surface is provided with internal teeth, and the first internal gear and the second internal gear are close to the semi-cylindrical ring. The axial positions of the side end surfaces are respectively provided with gear axial connection holes, and the gear axial connection holes are matched with the gear fixed shaft, and the other side end surfaces of the first internal gear and the second internal gear are connected with the cam surface of the camshaft. To cooperate, the first internal gear and the second internal gear are respectively provided with spring hooks near the end face and the end face, and the spring hooks on the same side are respectively connected with the two ends of a spring. The first internal gear, the second internal gear A radial clearance is provided between the outer cylindrical surface of the gear and the inner surface of the brake housing.

The axial boss of the external gear is provided with a threaded positioning hole, and the external gear is fixed to the connecting shaft through the positioning hole and the bolts matched with the positioning hole.

The second connection hole is provided with a bearing, and the camshaft is in interference fit with the inner hole of the bearing.

Beneficial effects of the present invention:

1. The brake device of the present invention is easy to operate, has high braking reliability and good safety, and the trolley needs to hold the brake operating handle tightly when it is running; loosen the brake operating handle, and the brake mechanism will automatically brake when it is in the parking state, avoiding the use of brakes on slopes. Get on the car. When the brake on the handlebar is held by hand and the cart is pushed hard, the brake line drives the camshaft to rotate, the camshaft overcomes the spring resistance, and the first internal gear and the second internal gear swing around the same gear fixed shaft for a predetermined angle, respectively. The first internal gear and the second internal gear open to the radial gap, and the meshing internal gear and the external gear are disengaged, and the trolley can move; when the brake is released, the camshaft returns to normal under the action of spring resilience. position, the first internal gear and the second internal gear are respectively restored to mesh with the external gear, the stroller is in a braking state and stops moving, realizing the active braking function of the baby stroller, which improves the safety of the baby stroller.

2. The axial boss of the external gear is provided with a threaded positioning hole. The external gear is fixed to the connecting shaft through the positioning hole and the bolt matched with the positioning hole. The external gear and the connecting shaft are fixed reliably and are easy to disassemble.

3. Bearings are arranged in the second connection hole, and the camshaft and the inner hole of the bearing are in interference fit, so that the installation and fixation are reliable, the rotation is flexible, and the operation is labor-saving.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the brake mechanism of the present invention and connection diagram;

Figure 3 is a schematic diagram of the connection of the brake mechanism.

Detailed ways

In order to better understand the present invention, the implementation manner of the present invention will be explained in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, a kind of baby stroller braking device comprises frame 24, handlebar 13, and frame bottom is provided with support frame 16, and support frame 16 is connected with connecting shaft 7 by bearing, and support frame 16 tops and car 13 is connected, rear wheels 12 are arranged on both sides of the connecting shaft 7, a brake mechanism is provided on the support frame between the rear wheels, and a brake operating handle 11 is provided on the handlebar 13, and the operating handle 11 is connected to the rear end of the brake line 10 , the front end of the brake line 10 is connected with the brake mechanism, and the outer sleeve of the brake line 10 is connected with the brake line support end 3 located at the brake housing; , the brake housing 1 is a cylindrical groove with an opening at one end in the axial direction and a closed end face at one end, the axis of the cylindrical groove coincides with the rear wheel axis, and the first connection with the axis as a line of symmetry is provided on the closed end face Hole 25, the second connection hole 26, the first connection hole is provided with gear fixed shaft 6, and the second connection hole is provided with camshaft 9, and described second connection hole is provided with bearing, and camshaft and bearing inner hole interference fit. The camshaft 9 is connected to the rear end of the brake line connecting rod 2 outside the end surface of the brake housing, and the front end of the brake line connecting rod 2 is connected to the front end of the brake line 10. The inner cavity 17 of the cylindrical groove is provided with an external gear 18, The first internal gear 19, the second internal gear 20, the inner hole of the external gear 18 is connected with the connecting shaft 7, the axial boss of the external gear 18 is provided with a threaded positioning hole, the external gear 18 passes through the positioning hole, and The bolt 15 matched with the positioning hole is fixed to the connecting shaft; the external gear 18 meshes with the first internal gear 19 and the second internal gear 20, and the first internal gear 19 and the second internal gear 20 are connected with the outer shell 1, The first internal gear 19 and the second internal gear 20 are semi-cylindrical ring structures, and the semi-cylindrical ring structure is provided with a protruding inner cylindrical surface 21 on the inner surface of the semi-cylindrical ring, and the inner cylindrical surface is provided with internal teeth. , the first internal gear and the second internal gear are respectively provided with gear axial connection holes at the axial positions close to the end face 28 on one side of the semi-cylindrical ring, and the gear axial connection holes are matched with the gear fixed shaft 6, and the The first internal gear 19 and the second internal gear 20 are connected to the brake housing 1 through the gear axial connection hole and the gear fixed shaft 6. The cam surface of the shaft 9 cooperates, and the first internal gear 19 and the second internal gear 20 are respectively provided with spring hooks 22 near the end face 28 and the end face 27, and the spring hooks 22 on the same side are connected with the two ends of a spring 5 respectively. connection, a radial gap 23 is provided between the outer cylindrical surface of the first internal gear, the second internal gear and the inner surface of the brake housing. Drive the camshaft 9 to rotate, the camshaft 9 overcomes the spring resistance, the first internal gear 19 and the second internal gear 20 respectively swing around the fixed shaft of the same gear at a predetermined angle, the meshing internal gear and the external gear are disengaged, and the trolley can move ; When the brake is released, the camshaft 9 returns to the normal position under the elastic force of the spring 5, the first internal gear 19 and the second internal gear 20 are respectively restored to mesh with the external gear 18, and the trolley is in the braking state. Stop moving, realize the active braking function of the baby stroller, and improve the safety of the baby stroller.

Although the specific implementation of the invention has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present invention. On the basis of the technical solution of the present invention, those skilled in the art can make various Modifications or variations are still within the protection scope of the present invention.

Claims (4)

1. A brake device for a baby stroller, comprising a frame and a handlebar, characterized in that the bottom of the frame is provided with a support frame, the support frame is connected with a connecting shaft, the upper part of the support frame is connected with the handlebar, and the two connecting shafts The side is provided with rear wheels, the support frame between the rear wheels is provided with a brake mechanism, the handlebar is provided with a brake operating handle, the operating handle is connected with the rear end of the brake line, the front end of the brake line is connected with the brake mechanism, and the brake line The outer sleeve is connected with the brake line support end arranged on the brake housing. 2. The baby stroller braking device as claimed in claim 1, wherein the braking mechanism comprises a brake housing, the brake housing is connected to the support frame, and the brake housing is provided with an opening at one axial end, One end is a cylindrical groove with a closed end surface, the axis of the cylindrical groove coincides with the axis of the rear wheel, and the closed end surface is provided with a first connecting hole and a second connecting hole with the axis as a line of symmetry, and the first connecting hole is provided with a gear for fixing Shaft, the second connection hole is provided with a camshaft, the camshaft is connected to the rear end of the brake line connecting rod outside the end face of the brake housing, the front end of the brake line connecting rod is connected to the front end of the brake line, and the inner cavity of the cylindrical groove An external gear, a first internal gear, and a second internal gear are provided, the inner hole of the external gear is connected to the connecting shaft, the external gear meshes with the first internal gear and the second internal gear, and the first internal gear, The second internal gear is connected with the outer shell, the first internal gear and the second internal gear are semi-cylindrical ring structures, the inner surface of the semi-cylindrical ring structure is provided with a protruding inner cylindrical surface, and the inner cylindrical surface is provided with Internal teeth, the first internal gear and the second internal gear are respectively provided with gear axial connection holes at the axial positions close to the end surface of the semi-cylindrical ring, and the gear axial connection holes are matched with the gear fixed shaft. The other side end faces of the first internal gear and the second internal gear cooperate with the cam surface of the camshaft. The first internal gear and the second internal gear are respectively provided with spring hooks near the end faces and the end faces. The spring hooks on the same side They are respectively connected to two ends of a spring, and radial gaps are provided between the outer cylindrical surfaces of the first internal gear and the second internal gear and the inner surface of the brake housing. 3. The baby stroller brake device according to claim 2, wherein the axial boss of the external gear is provided with a threaded positioning hole, and the external gear is connected to the positioning hole through the positioning hole and the bolts matched with the positioning hole. The shaft is fixed. 4. The baby stroller brake device according to claim 2, wherein the second connecting hole is provided with a bearing, and the camshaft is in interference fit with the inner hole of the bearing.