CN101716949B

CN101716949B - Wheel structure of baby stroller

Info

Publication number: CN101716949B
Application number: CN200910266273XA
Authority: CN
Inventors: 李伟琼
Original assignee: SUZHOU VIGORKIDS CHILD PRODUCTS CO Ltd
Current assignee: Kunshan Weikai Children Products Co Ltd
Priority date: 2009-12-24
Filing date: 2009-12-24
Publication date: 2011-08-17
Anticipated expiration: 2029-12-24
Also published as: CN101716949A

Abstract

The invention discloses a wheel structure of a baby stroller, which comprises wheels and wheel forks, wherein the wheels are installed on the wheel forks through wheel shafts. Both sides of each wheel forks are respectively pivoted with a connecting rod, and a brake step tread is arranged between the two connecting rods. Each wheel fork is provided with a connecting part which extends upwards, a brake shoe is sleeved on the connecting part, and a spring is connected between the brake shoe and the connecting part. An adapting part with an inclined plane is formed at the inner side of the brake step tread, a contact part placed above the inclined plane of the adapting part is convexly arranged on the brake shoe, and a limit part is convexly arranged at the lower part of the brake shoe. Each wheel is provided with a brake disc, and a plurality of brake slots are arranged at intervals on the periphery of the brake disc. The brake step tread can drive the brake shoe to move upwards and downwards through the inclined plane so as to enable the limit part of the brake shoe to insert or retreat the brake slots of the brake disc for braking or de-braking. The brake step tread is connected to the two sides of each wheel, so that brake failure due to the separation of the brake shoe and the wheels caused by the distortion of the brake step tread is avoided.

Description

The car wheel structure of doll carriage

Technical field

The present invention relates to a kind of car wheel structure of doll carriage.

Background technology

Doll carriage in the market, its brake gear comprise brake mount, wheel and the brake tooth that is installed on the axletree, and each between cog of brake tooth is formed with a plurality of brake grooves, and with the brake step of brake mount pivotal joint, the brake step is provided with the brake pin.When the user press down brake the time, brake is sold and to be embedded into the brake groove, and wheel can not be rotated; When lifting the brake step on the user, the brake pin withdraws from the brake groove, and wheel can freely be rotated.

But in the past single-wheel brake just adds the brake step in a side of wheel, and does not link to each other with an other side of wheel, and disadvantage is exactly as when braking the step torsional deflection, brake shoes meeting so break away from wheel and brake inefficacy.

Summary of the invention

The present invention seeks to: the car wheel structure that a kind of doll carriage is provided, its brake step connects the both sides of wheel, the brake step is on the both sides of the middle upper part operation wheel of wheel, monolaterally just can brake, avoid simultaneously losing efficacy because of the brake that distorting of brake step causes the brake shoes separating wheel to be caused.

Technical scheme of the present invention is: a kind of car wheel structure of doll carriage, comprise wheel and wheel fork, wheel is installed on wheel by wheel shaft and sticks, described wheel fork both sides are articulated with connecting rod respectively, be provided with the brake step between two connecting rods, described wheel fork has a upwardly extending connecting portion, be arranged with brake shoes on the connecting portion, be connected with spring between brake shoes and the connecting portion, described brake step inboard is formed with a mating part with inclined-plane, the top of described brake shoes convexes with a contact part that places the inclined-plane top of mating part, the bottom of brake shoes convexes with limiting section, and described wheel is provided with the brake disc that circumferential interval is furnished with a plurality of brake grooves, and the brake step can be rotated by the inclined-plane of mating part and be driven on the brake shoes, move down, so that the limiting section of brake shoes inserts or withdraw from the brake groove of brake disc, realize brake or un-brake.

The upper end of described brake step has a stampeding section that is upturned, and the direction of tilt on the inclined-plane of described mating part and the direction of tilt of stampeding section are roughly the same, and during the un-brake state, it is high-end that the contact part of brake shoes and the contact point of mating part are positioned at the inclined-plane of mating part.

Described car wheel structure also comprises vertical shaft and wheel seat, and described wheel seat is fixed in the lower end of vertical shaft, wheel seat be located at wheel fork top and and wheel fork between be connected with vibration damping spring.Wheel seat and wheel, when wheel fork relatively rotates, vibration damping spring can play the purpose of shock-absorbing.

Advantage of the present invention is:

1. brake step of the present invention connects the both sides of wheel, and the brake step is on the both sides of the middle upper part operation wheel of wheel, monolaterally just can brake, and has avoided the brake inefficacy that causes the brake shoes separating wheel to be caused because of distorting of brake step simultaneously.

2. the brake step can so that the limiting section of brake shoes inserts or withdraw from the brake groove of brake disc, realize braking or un-brake by upper and lower the moving of inclined-plane rotation drive brake shoes among the present invention, and simple in structure, easy to operate, productive costs is also lower.

3. be connected with vibration damping spring between wheel seat and the wheel fork among the present invention, wheel seat and wheel, when wheel fork relatively rotates, vibration damping spring can play the purpose of shock-absorbing.

4. the existing brake function of the present invention has incabloc function again, and is regardless of front and back wheel, all can use.

Description of drawings

Fig. 1 is the block diagram of un-brake state of the present invention;

Fig. 2 is the front view of un-brake state of the present invention;

Fig. 3 is the cutaway view of Fig. 2;

Fig. 4 is the A-A cutaway view of Fig. 2;

Fig. 5 is the birds-eye view of un-brake state of the present invention;

Fig. 6 is the B-B cutaway view of Fig. 5;

Fig. 7 is the block diagram of braking state of the present invention;

Fig. 8 is the cutaway view of braking state of the present invention.

Wherein: 1 wheel; 2 wheel forks; 21 connecting portions; 3 wheel shafts; 4 connecting rods; 5 brake steps; 51 mating parts; 52 inclined-planes; 53 stampeding sections; 6 brake shoes; 61 contact parts; 62 limiting sections; 7 springs; 8 brake discs; 81 brake grooves; 9 vertical shafts; 10 wheel seats; 11 vibration damping springs.

The specific embodiment

Below in conjunction with drawings and Examples the present invention is further described:

Embodiment: extremely shown in Figure 8 as Fig. 1, a kind of car wheel structure of doll carriage, comprise wheel 1 and wheel fork 2, wheel 1 is installed on the wheel fork 2 by wheel shaft 3, described wheel fork 2 both sides are articulated with connecting rod 4 respectively, in the present embodiment, described pivot is above-mentioned wheel shaft 3, be provided with brake step 5 between two connecting rods 4, described wheel fork 2 has a upwardly extending connecting portion 21, be arranged with brake shoes 6 on the connecting portion 21, be connected with spring 7 between brake shoes 6 and the connecting portion 21, described brake step 5 inboards are formed with a mating part 51 with inclined-plane 52, and the top of described brake shoes 6 convexes with a contact part 51 that places 52 tops, inclined-plane of mating part 51, and the bottom of brake shoes 5 convexes with limiting section 52, described wheel 1 is provided with the brake disc 8 that circumferential interval is furnished with a plurality of brake grooves 81, brake step 5 can be rotated by the inclined-plane 52 of mating part 51 and be driven on the brake shoes 6, move down,, realize brake or un-brake so that the limiting section 62 of brake shoes 6 inserts or withdraw from the brake groove 91 of brake disc 8.

The upper end of described brake step 5 has a stampeding section that is upturned 53, the direction of tilt on the inclined-plane 62 of described mating part 51 and the direction of tilt of stampeding section 53 are roughly the same, during the un-brake state, it is high-end that the contact point of the contact part of brake shoes 6 61 and the mating part 51 of brake step 5 is positioned at the inclined-plane of mating part 51.

As shown in Figure 3, when wheel 1 is in the un-brake state, conter clockwise applies a power in brake step 5, and brake step 5 and connecting rod 4 rotate counterclockwise around wheel shaft 3, and inclined-plane 52 rotates thereupon, the contact part 61 of brake shoes 6 and inclined-plane 52 relative unclamping, this moment, brake shoes 6 moved down under the effect of spring 7, and limiting section 52 falls in the brake groove 81 of brake disc 8, realize brake, see Fig. 8.

As shown in Figure 8, when wheel 1 is in braking state, cw applies a power in brake step 5, brake step 5 and connecting rod 4 clockwise rotate around wheel shaft 3, inclined-plane 52 rotates thereupon, moves on the contact part 61 of inclined-plane 52 drive brake shoes 6, and limiting section 62 withdraws from the brake groove 81 of brake disc 8, realize un-brake, see Fig. 3.

In the present embodiment, described wheel 1 is a cardan wheel, and described car wheel structure also comprises vertical shaft 9 and wheel seat 1, and described wheel seat 10 is fixed in the lower end of vertical shaft 9, wheel seat 10 be located at wheel fork 2 top and and wheel fork 2 between be connected with vibration damping spring 11.Wheel seat 9 is with wheel 1, when wheel fork 2 relatively rotates, and vibration damping spring 11 can play the purpose of shock-absorbing.

The existing brake function of the present invention has incabloc function again, and is regardless of front and back wheel, all can use.The present invention is on the universal basis of single-wheel, and brake step 5 is on the both sides of the middle upper part of wheel 1 operation wheel 1, monolaterally just can brake, and avoid the brake inefficacy that causes brake shoes 6 separating wheels 1 to be caused because of distorting of brake step 5.

Claims

1. the car wheel structure of a doll carriage, comprise wheel (1) and wheel fork (2), wheel (1) is installed on the wheel fork (2) by wheel shaft (3), it is characterized in that: described wheel fork (2) both sides are articulated with connecting rod (4) respectively, be provided with brake step (5) between two connecting rods (4), described wheel fork (2) has a upwardly extending connecting portion (21), be arranged with brake shoes (6) on the connecting portion (21), be connected with spring (7) between brake shoes (6) and the connecting portion (21), described brake step (5) inboard is formed with a mating part (51) with inclined-plane (52), the top of described brake shoes (6) convexes with a contact part (61) that places inclined-plane (52) top of mating part (51), the bottom of brake shoes (6) convexes with limiting section (62), described wheel (1) is provided with the brake disc (8) that circumferential interval is furnished with a plurality of brake grooves (81), the inclined-plane (52) that brake step (5) can be passed through mating part (51) rotates on the drive brake shoes (6), move down, so that the limiting section (62) of brake shoes (6) inserts or withdraw from the brake groove (81) of brake disc (8), realize brake or un-brake.

2. the car wheel structure of doll carriage according to claim 1, it is characterized in that: the upper end of described brake step (5) has a stampeding section that is upturned (53), the direction of tilt on the inclined-plane (52) of described mating part (51) and the direction of tilt of stampeding section (53) are roughly the same, during the un-brake state, the contact part (61) of brake shoes (6) is high-end with the inclined-plane (52) that the contact point of mating part (51) is positioned at mating part (51).

3. the car wheel structure of doll carriage according to claim 1 and 2, it is characterized in that: described car wheel structure also comprises vertical shaft (9) and wheel seat (10), described wheel seat (10) is fixed in the lower end of vertical shaft (9), wheel seat (10) be located at wheel fork (2) top and and wheel fork (2) between be connected with vibration damping spring (11).