CN118004318B - Children bicycle brake and speed limiting structure thereof - Google Patents

Abstract

The invention discloses a brake for a children's bicycle and a speed limiting structure thereof, and relates to the technical field of non-motor vehicle accessories. Nowadays, the brake of a bicycle utilizes friction force to brake the vehicle, and a braking device is also provided on a children's bicycle. When braking, these braking devices need to use a large force to brake and stop the vehicle, but a child's finger strength is insufficient, and it is difficult to brake the vehicle when the vehicle speed is fast, which may cause certain safety risks. The invention brakes the brake disc through a brake ring by combining a brake convex block and a brake disc, and at the same time, brakes by fitting with one side of the back of the brake disc. First, multi-directional braking is achieved in braking. In addition, in order to avoid the riding speed of the children's bicycle being too fast, a speed limiting structure is provided on the brake, and braking can be automatically performed when the vehicle speed is fast to reduce the vehicle speed. The brake is equipped on the children's bicycle, so that the safety of children's riding is higher.

Description

A children's bicycle brake and speed limiting structure thereof

Technical Field

The invention relates to the technical field of non-motor vehicle accessories, in particular to a children's bicycle brake and a speed limiting structure thereof.

Background technique

Bicycle brakes are devices used to control the speed and stop a bicycle. Common bicycle brakes include two types: disc brakes and V brakes. V brakes are a common bicycle brake that achieves braking effect by clamping the brake pads on the wheel with two brake arms that open upward. It consists of a brake handle, brake cable, brake arm, and brake pad. When the brake handle is pulled, the brake cable pulls the brake arm, causing the brake pad to clamp the wheel, generating friction braking force.

In this regard, Chinese patent publication number: CN202851741U discloses a bicycle spiral disc brake, which belongs to the field of brake technology. It solves the problem of poor braking effect of existing bicycle brakes. The bicycle spiral disc brake includes a shell with an inner cavity, brake pads are respectively arranged on both sides of the inner cavity, and friction pads are respectively fixedly installed on the two brake pads. An adjustment device is installed on one side of the shell, and the other side has an inner cavity and a drive shaft is penetrated. The inner end of the drive shaft is located in the inner cavity and has an outer step, and the outer end is located outside the shell. A rocker arm structure, a reset structure and a drive disk are sleeved on the drive shaft. The drive disk abuts between the inner cavity wall and the outer step side wall of the rotating shaft. The outer step side wall of the drive shaft and the working surface of the drive disk abutting against the outer step side wall of the drive shaft are respectively provided with a corresponding number of equal pitch spiral grooves, and steel balls are arranged in the corresponding two equal pitch spiral grooves on the outer step side wall of the drive shaft and the working surface of the drive disk. The brake has the advantage of good braking effect.

Nowadays, bicycle brakes use friction to brake the vehicle. Some children's vehicles are also equipped with braking devices. These braking devices require a large force to stop the vehicle. However, children's finger strength is insufficient, and it is difficult to stop the vehicle when the vehicle is moving at a high speed. This poses a certain safety risk.

In view of the above problems, a children's bicycle brake and a speed limiting structure thereof are proposed.

Summary of the invention

The purpose of the present invention is to provide a brake for a children's bicycle and a speed limiting structure thereof, which solves the problem in the background art that the brake application force is small and it is difficult to stop the vehicle.

To achieve the above object, the present invention provides the following technical solution: a brake for a children's bicycle, comprising a wheel, a transmission shaft is embedded in the wheel, a brake housing is provided on one side of the transmission shaft, and the transmission shaft is embedded in the brake housing;

A brake cover is provided on one side of the brake housing, and a speed limiting assembly is arranged inside the brake housing. The speed limiting assembly includes a brake disc, a brake disc is embedded in the interior of the brake housing, and a brake assembly is set on the outer surface of the brake disc. The brake assembly includes a brake bump, and the outer surface of the brake disc is fixedly connected with the brake bump. A brake ring is installed on the inner wall of the brake housing, and the brake ring and a traction spring can brake the bicycle in cooperation. A traction plate is also installed on the inner wall of the brake housing, and a locating pin is embedded in the interior of the traction plate. The traction plate is installed in the interior of the brake housing through the locating pin. A brake line is also installed on the top of the traction plate, and the brake line extends from the interior of the brake housing to the outside of the brake housing. The interior of the brake housing is connected to a deflection strip through a longitudinal plug rod, and the brake pad is connected to one side of the deflection strip, and the other side of the deflection strip corresponds to the push block fixedly connected to the traction plate.

Preferably, the brake bumps are provided in two groups, the two groups of brake bumps are symmetrically arranged on the outer surface of the brake disc, and the brake ring is wrapped around the brake bumps and the outer surface of the brake disc.

Preferably, the traction plate has three protruding edges, the protruding edge at the top of the traction plate is connected to a brake bump, the protruding edge at the left side of the bottom end of the traction plate is connected to a positioning pin, and the protruding edge at the right side of the bottom end of the traction plate is connected to a brake ring, wherein the connection between the traction plate and the brake ring is a movable connection.

Preferably, a push block is fixedly connected to one side of the back side of the traction piece, the surface of the push block is an inclined surface, and the thickness of the push block increases continuously from the top end to the bottom end.

Preferably, one end of the deflection strip close to the traction plate is attached to the push block, and the push block pushes the deflection strip to deflect along the axis point, pushing the brake plate to attach to the back side of the brake disc.

The present invention also provides a speed limiting structure for a children's bicycle brake as described above, wherein a speed limiting disc is arranged inside the brake disc, and the speed limiting disc is connected to the inner wall of the brake housing through a fixing rod, and a hanging opening is arranged on the inner wall of the speed limiting disc, and an installation disc is also installed inside the brake disc, and a hook is installed on the top surface of the installation disc, a traction spring is fixedly connected to one side of the hook, a counterweight is fixedly connected to the outer surface of the hook, and a positioning ring is installed on the top surface of the hook.

Preferably, the traction spring and the counterweight are installed between the mounting plate and the positioning ring, the mounting plate is used to fix the counterweight, the counterweight is movably connected to the mounting plate through an axial rod, and the transmission shaft is embedded in the interior of the brake housing and connected to the mounting plate and the positioning ring.

Preferably, one end of the traction spring is movably connected to the positioning ring, and the other end is connected to the hook. The traction spring is arranged along the tangent direction of the positioning ring, and the traction spring is used to pull the hook position.

Preferably, the hooks are provided in three groups, and the hooks correspond to the hanging openings, and the two are used in conjunction with each other.

Preferably, the mounting disc is embedded in the interior of the brake disc, the transmission shaft is embedded in the interior of the mounting disc and the positioning ring, the portion of the transmission shaft connected to the mounting disc is provided with a friction plate, and the friction coefficient between the transmission shaft and the mounting disc is greater than the friction coefficient between the brake ring and the brake disc.

Compared with the prior art, the present invention has the following beneficial effects:

The present invention provides a brake for a children's bicycle and a speed limiting structure thereof. Firstly, on the brake, a brake lug and a brake disc are combined, and the brake disc is braked by a brake ring. At the same time, the brake is braked by a method of fitting with one side of the back of the brake disc. Firstly, multi-directional braking is achieved in the brake. Secondly, the brake lug and the brake ring can be used to brake within a smaller range of the brake ring. The force applied during braking is smaller, and the braking effect is better. In addition, in order to avoid the riding speed of the children's bicycle being too fast, a speed limiting structure is provided on the brake, and the brake can be automatically applied when the vehicle speed is fast to reduce the vehicle speed. The brake is equipped on the children's bicycle, so that the safety of children's riding is higher.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a schematic structural diagram of a brake housing and a brake cover of the present invention;

FIG3 is a schematic diagram of the structure of the brake disc and the brake cam of the present invention;

FIG4 is a schematic diagram of the structure of the brake housing and the traction pad of the present invention;

FIG5 is a schematic diagram of the structure of the positioning ring and the speed limiting disk of the present invention;

FIG6 is a schematic diagram of the structure of the traction piece and the positioning pin of the present invention;

FIG7 is a schematic diagram of the structure of the brake disc and the hook of the present invention;

FIG8 is a schematic diagram of the exploded structure of the brake disc and brake lug of the present invention;

FIG9 is a schematic diagram of the structure of the speed limit plate and the hanging port of the present invention;

FIG10 is a schematic diagram of the structure of a traction spring and a positioning ring of the present invention;

FIG. 11 is a schematic diagram of the structure of the push block and the deflection strip of the present invention.

In the figure: 11, wheel; 12, transmission shaft; 13, brake housing; 14, brake cover; 15, brake line; 2, brake assembly; 21, brake ring; 22, traction plate; 23, positioning pin; 24, brake bump; 25, push block; 26, deflection strip; 27, brake pad; 3, speed limit assembly; 31, speed limit disc; 32, mounting disc; 33, positioning ring; 34, traction spring; 35, brake disc; 36, hook; 37, hanging mouth; 38, counterweight.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

1 to 11 , a children's bicycle brake of the present invention includes a wheel 11, a transmission shaft 12 is embedded in the wheel 11, a brake housing 13 is provided on one side of the transmission shaft 12, and the transmission shaft 12 is embedded in the brake housing 13;

A brake cover 14 is provided on one side of the brake housing 13, and a speed limiting component 3 is provided inside the brake housing 13. The speed limiting component 3 includes a brake disc 35, and a brake disc 35 is embedded inside the brake housing 13. Two groups of brake protrusions 24 are provided, and the two groups of brake protrusions 24 are symmetrically arranged on the outer surface of the brake disc 35. The brake ring 21 is wrapped around the outer surface of the brake protrusions 24 and the brake disc 35. During the braking process of the non-motor vehicle, the traction plate 22 is firstly rotated along the positioning pin 23 by pulling the brake line 15. During the rotation process, the traction plate 22 will pull the brake ring 21, and under the action force, the brake ring 21 is continuously approached to the brake disc 35 until the brake ring 21 is attached to the surface of the brake disc 35. At this time, the rotation of the brake disc 35 is suppressed, and the braking effect can be achieved;

The outer surface of the brake disc 35 is provided with a brake assembly 2, and the brake assembly 2 includes a brake protrusion 24. The outer surface of the brake disc 35 is fixedly connected with the brake protrusion 24. The inner wall of the brake housing 13 is installed with a brake ring 21. The brake ring 21 and the traction spring 34 can brake the bicycle. The inner wall of the brake housing 13 is also installed with a traction plate 22. The traction plate 22 has three protruding edges. The protruding edge at the top of the traction plate 22 is connected with the brake protrusion 24, the protruding edge at the left side of the bottom end of the traction plate 22 is connected with a positioning pin 23, and the protruding edge at the right side of the bottom end of the traction plate 22 is connected with the brake ring 21. The connection between the traction plate 22 and the brake ring 21 is a movable connection. The locating pin 23 is embedded in the interior of the traction plate 22. During the braking process, in order to better brake, the brake protrusion 24 is firstly provided on the outer surface of the brake disc 35. When the brake protrusion 24 is connected, the brake disc 35 and the brake protrusion 24 The combination forms an irregular shape, in which the brake protrusion 24 is in a state of protruding outward. During the braking process, the brake ring 21 will continuously rub against the brake disc 35. When the brake ring 21 rubs against the upper surface of the brake protrusion 24, since the brake protrusion 24 protrudes outward, when the brake ring 21 contacts the brake protrusion 24, due to the large left and right span of the protrusion 24, the brake ring 21 will preferentially contact the protrusion 24 and make the protrusion 24 abut against the inner wall of the brake ring 21, making the brake ring more closely attached. In this way, the friction between the brake ring 21 and the protrusion 24 is also greater, thereby better suppressing the rotation of the brake protrusion 24. It only needs the brake ring 21 to shrink a little bit to contact the brake protrusion 24. Later, as the brake ring 21 and the brake disc 35 rotate, the brake ring 21 is continuously wrapped around the brake disc 35, and the rotation of the brake disc 35 is suppressed at this time. Therefore, under the applied force, the braking effect is good;

The traction piece 22 is installed inside the brake housing 13 through the positioning pin 23, and a brake line 15 is also installed on the top of the traction piece 22. The brake line 15 extends from the inside of the brake housing 13 to the outside of the brake housing 13. The inside of the brake housing 13 is connected with a deflection strip 26 through a longitudinal plug rod, and a brake piece 27 is connected to one side of the deflection strip 26. The other side of the deflection strip 26 corresponds to the push block 25 fixedly connected to the traction piece 22. The back side of the traction piece 22 is fixedly connected with the push block 25. The surface of the push block 25 is an inclined surface, and the thickness of the push block 25 increases continuously from the top to the bottom. The end of the deflection strip 26 close to the traction piece 22 is attached to the push block 25, and the push block 25 pushes the deflection strip 26 to deflect along the axis point, so as to push the brake piece 27 to attach to the back side of the brake disc 35.

At the same time, in order to better achieve the braking effect, when the brake line 15 is pulled, the traction plate 22 is driven to rotate along the positioning pin 23. After the rotation, the push block 25 on the back of the traction plate 22 will resist the deflection bar 26, and the deflection bar 26 will rotate along the axis under the resistance. After the rotation, the deflection bar 26 will press the brake pad 27, and the pressed brake pad 27 contacts the back side of the brake disc 35. At this time, the braking contact surface can be increased, and the friction force can be improved, so that the bicycle can be better stopped.

When riding a bicycle, it is not only the braking force that affects the braking distance, but also the speed;

When minors ride non-motorized vehicles, they have poor restraint ability and ride too fast. When an emergency occurs, they cannot brake immediately, which causes certain injuries to minors. In order to avoid this problem, a speed limit structure is added to the brake to suppress the speed of bicycle riding.

A speed limiting structure for a children's bicycle brake, wherein a speed limiting disc 31 is arranged inside a brake disc 35, the speed limiting disc 31 is connected to the inner wall of a brake housing 13 through a fixing rod, a hanging opening 37 is arranged on the inner wall of the speed limiting disc 31, a mounting disc 32 is also installed inside the brake disc 35, a hook 36 is installed on the top surface of the mounting disc 32, a traction spring 34 is fixedly connected to one side of the hook 36, a counterweight 38 is fixedly connected to the outer surface of the hook 36, a positioning ring 33 is installed on the top surface of the hook 36, and the traction spring 34 is fixedly connected to the outer surface of the hook 36. 4 and the counterweight 38 are installed between the mounting plate 32 and the positioning ring 33. The mounting plate 32 is used to fix the counterweight 38. The counterweight 38 is movably connected to the mounting plate 32 through a shaft rod. The transmission shaft 12 is embedded in the interior of the brake housing 13 and is connected to the mounting plate 32 and the positioning ring 33. One end of the traction spring 34 is movably connected to the positioning ring 33, and the other end is connected to the hook 36. The traction spring 34 is set along the tangent direction of the positioning ring 33, and the traction spring 34 is used to pull the position of the hook 36.

There are three groups of hooks 36, and the hooks 36 correspond to the hanging openings 37, and the two are used in conjunction with each other. The mounting disc 32 is embedded in the interior of the brake disc 35, and the transmission shaft 12 is embedded in the interior of the mounting disc 32 and the positioning ring 33. The portion of the transmission shaft 12 connected to the mounting disc 32 is provided with a friction plate, and the friction coefficient between the transmission shaft 12 and the mounting disc 32 is greater than the friction coefficient between the brake ring 21 and the brake disc 35.

When the bicycle is ridden at a high speed, the rotation speed of the wheel 11 is fast, and the transmission shaft 12 rotates fast synchronously therewith, wherein the mounting plate 32 and the positioning ring 33 installed on the transmission shaft 12, as well as the brake disc 35 and the brake lug 24 also rotate accordingly. When braking is required, the brake disc 35 is wrapped by the brake ring 21, and the brake pad 27 and the brake disc 35 are in contact with each other to achieve braking;

When the bicycle is running at a high speed, the rotation speed of the brake disc 35 is also fast, and the rotation speeds of the mounting disc 32 and the positioning ring 33 are also fast. At this time, the centrifugal force generated by the rotation becomes larger. When the centrifugal force becomes large enough to make the hook 36 contact the hanging hole 37 and snap into the inside of the hanging hole 37, and because the speed limiting disc 31 is fixed by the brake housing 13, the speed limit is achieved. The specific operation is as follows:

When the mounting plate 32 and the positioning ring 33 rotate, the centrifugal force forces the traction spring 34 to extend, and the centrifugal force will act on the hook 36. The counterweight block 38 located at the front end of the hook 36 will move to the outside under the support of the centrifugal force. When the hook 36 is unfolded, the hook 36 will be buckled inside the hanging mouth 37. At this time, the speed limit plate 31 can inhibit the rotation of the mounting plate 32 and the positioning ring 33. At the same time, the rotation of the brake disc 35 will also be restricted. In order to avoid rollover during emergency braking, a friction plate is provided between the positioning ring 33 and the transmission shaft 12. During overspeed braking, the positioning ring 33 and the transmission shaft 12 will slip, thereby avoiding rollover. The friction plate located between the positioning ring 33 and the transmission shaft 12 is only used for emergency braking to play a buffering role. Under normal circumstances, the friction force is sufficient to support the relationship between the positioning ring 33 and the transmission shaft 12, so that the positioning ring 33 and the transmission shaft 12 can rotate synchronously.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. A children's bicycle brake, comprising a wheel (11), characterized in that: a transmission shaft (12) is embedded in the wheel (11), a brake shell (13) is arranged on one side of the transmission shaft (12), and the transmission shaft (12) is embedded in the brake shell (13);

One side of the brake housing (13) is provided with a brake cover body (14), the inside of the brake housing (13) is provided with a speed limiting assembly (3), the speed limiting assembly (3) comprises a brake disc (35), the brake disc (35) is embedded in the inside of the brake housing (13), the outer surface of the brake disc (35) is provided with a brake assembly (2), the brake assembly (2) comprises a brake lug (24), the outer surface of the brake disc (35) is fixedly connected with the brake lug (24), the inner wall of the brake housing (13) is provided with a brake ring (21), the brake ring (21) and a traction spring (34) are matched to brake a bicycle, the inner wall of the brake housing (13) is also provided with a traction piece (22), a locating pin (23) is embedded in the inside of the traction piece (22), a brake wire (15) is further installed on the top end of the traction piece (22) through the locating pin (23), the brake wire (15) is connected with a brake bar (26) extending from the inside of the brake housing (13) to the inside of the brake housing (13) through a deflection bar (26), the other side of the deflection strip (26) corresponds to a pushing block (25) fixedly connected with the traction piece (22);

the two groups of brake lugs (24) are symmetrically arranged on the outer surface of the brake disc (35), and the brake ring (21) wraps the outer surfaces of the brake lugs (24) and the brake disc (35);

The traction piece (22) is provided with three protruding edges, the protruding edge at the top end of the traction piece (22) is connected with a braking lug (24), the protruding edge at the left side of the bottom end of the traction piece (22) is connected with a positioning pin (23), the protruding edge at the right side of the bottom end of the traction piece (22) is connected with a braking ring (21), and the traction piece (22) and the braking ring (21) are connected in a movable mode.

2. A children's bicycle brake according to claim 1, wherein: the traction piece (22) is fixedly connected with a push block (25) on one side of the back surface, the surface of the push block (25) is an inclined surface, and the thickness from the top end to the bottom end of the push block (25) is continuously increased.

3. A children's bicycle brake according to claim 2, wherein: one end of the deflection strip (26) close to the traction piece (22) is attached to the pushing block (25), the deflection strip (26) is pushed to deflect along an axial point through the pushing block (25), and the brake piece (27) is pushed to be attached to one side of the back face of the brake disc (35).

4. The speed limiting structure of a children's bicycle brake of claim 1, wherein: the inside of brake disc (35) is provided with speed limit dish (31), speed limit dish (31) are connected on the inner wall of stopper shell (13) through the dead lever, be provided with on the inner wall of speed limit dish (31) and hang mouth (37), install dish (32) still in the inside of brake disc (35), install couple (36) on the top surface of installation dish (32), one side fixedly connected with drag spring (34) of couple (36), fixedly connected with balancing weight (38) on the lateral surface of couple (36), locating ring (33) are installed to the top surface of couple (36).

5. The speed limiting structure of a children's bicycle brake of claim 4, wherein: the traction spring (34) and the balancing weight (38) are installed between the installation disc (32) and the positioning ring (33), the installation disc (32) is used for fixing the balancing weight (38), the balancing weight (38) is movably connected to the installation disc (32) through a shaft rod, and the transmission shaft (12) is embedded into the brake shell (13) and connected with the installation disc (32) and the positioning ring (33).

6. The speed limiting structure of a children's bicycle brake of claim 5, wherein: one end of the traction spring (34) is movably connected to the positioning ring (33), the other end of the traction spring is connected with the hook (36), the traction spring (34) is arranged along the tangential direction of the positioning ring (33), and the traction spring (34) is used for traction of the position of the hook (36).

7. The speed limiting structure of a children's bicycle brake of claim 6, wherein: the hooks (36) are provided with three groups, and the hooks (36) are corresponding to the hanging openings (37) and are matched with each other for use.

8. The speed limiting structure of a children's bicycle brake of claim 7, wherein: the mounting disc (32) is embedded in the brake disc (35), the transmission shaft (12) is embedded in the mounting disc (32) and the positioning ring (33), a friction plate is arranged on the portion, connected with the mounting disc (32), of the transmission shaft (12), and the friction coefficient between the transmission shaft (12) and the mounting disc (32) is larger than that between the brake ring (21) and the brake disc (35).