阅读说明：本技术 一种能够及时报警并自主制动的学步车 (Baby walker capable of giving alarm in time and automatically braking ) 是由 不公告发明人 于 2021-08-27 设计创作，主要内容包括：本发明专利公开了一种能够及时报警并自主制动的学步车,包括支撑架和若干万向轮,支撑架包含支撑顶部结构和若干支撑连接腿,支撑连接腿的数量为四,万向轮与支撑顶部结构通过支撑连接腿活动连接,万向轮包含若干导向前轮和自主制动后轮。有益效果：能够对不同身材的小朋友使用,且不会对小朋友的上身造成挤压的碰撞,能够对小朋友的上身进行稳定支撑,能够防止用户在走路时发生侧翻,具有万向转动的效果,通过用户的移动速度能够带动抽拉杆的运动频率发生改变,从而使发生筒内的声音越来越急促,进而使本装置能够根据车速的快慢具有警告提醒的功能,具有一定的缓冲制动效果,节能环保,可重复使用,使用安全性高。(The invention discloses a walker capable of giving an alarm in time and braking automatically, which comprises a support frame and a plurality of universal wheels, wherein the support frame comprises a support top structure and a plurality of support connecting legs, the number of the support connecting legs is four, the universal wheels are movably connected with the support top structure through the support connecting legs, and the universal wheels comprise a plurality of front guide wheels and rear automatic braking wheels. Has the advantages that: can use the child of different statures, and can not cause the extruded collision to child's upper part of the body, can carry out the stable support to child's upper part of the body, can prevent that the user from taking place to turn on one's side when walking, universal pivoted effect has, the rate of movement that can drive the pull pole through user's travelling speed changes, thereby make the sound in the emergence section of thick bamboo more and more impatient, and then make this device can have the function that the warning was reminded according to the speed of a motor vehicle, certain buffering braking effect has, energy-concerving and environment-protective, and can be repeatedly used, and the safety in utilization is high.)

1. The utility model provides a can in time report to police and independently study car of braking which characterized in that, includes support frame (1) and a plurality of universal wheel (2), support frame (1) contains supports top structure (3) and a plurality of support and connects leg (4), the quantity of support connection leg (4) is four, universal wheel (2) with support top structure (3) and pass through support connection leg (4) swing joint, universal wheel (2) contain a plurality of leading front wheel (5) and independently brake rear wheel (5).

2. The baby walker capable of giving an alarm in time and braking automatically according to claim 1, wherein the supporting top structure (3) is provided with a supporting outer ring (6), an anti-skidding handrail (7) is arranged at the central position of one side of the supporting outer ring (6) close to the guide front wheels (5), a rubber cushion is arranged at the top of the anti-skidding handrail (7), a contracting supporting ring (8) is arranged at the central position of the supporting outer ring (6), a tightening telescopic belt (9) is arranged at the central position of the contracting supporting ring (8), and a tightening telescopic rope (10) is arranged at one end, away from the rubber cushion, of the tightening telescopic belt (9).

3. The walker capable of giving an alarm in time and automatically braking according to claim 1, wherein the number of the guide front wheels (5) is two, the guide front wheels (5) comprise a first guide support top cover (11) and a driving front wheel (12), the first guide support top cover (11) is movably arranged on the top of the driving front wheel (12), a plurality of support stabilizer bars (13) are movably arranged at the center position of the driving front wheel (12), a support center hole is formed at the intersection of the support stabilizer bars (13), a first support center shaft (14) is fixedly inserted in the support center hole, and the center positions of two sides of the first support center shaft (14) are movably connected with the first guide support top cover (11).

4. The walker capable of timely alarming and autonomous braking as claimed in claim 1, the top end of the first guide supporting top cover (11) is provided with a mud blocking supporting top cover (15), a universal supporting base (16) is arranged at the center of the top end of the mud blocking supporting top cover (15), a first supporting connecting rod (17) is movably arranged at the center of the top end of the universal supporting base (16), the top end of the first support connecting rod (17) is fixedly connected with the support connecting leg (4), the bottom ends of the two sides of the first guide supporting top cover (11) are respectively provided with a V-shaped supporting frame (18), the bottom end of the V-shaped support frame (18) is movably sleeved on two sides of the first support central shaft (14), and an alarm structure (19) is arranged on one side of the V-shaped support frame (18) far away from the anti-skidding handrail (7).

5. The walker capable of timely alarming and autonomous braking as claimed in claim 1, the alarm structure (19) is provided with an alarm driving structure (20) and a sounding structure (21), the sounding structure (21) is arranged at the top end of the alarm driving structure (20), the alarm driving structure (20) is provided with a cross-shaped supporting underframe (22), the central position of the cross-shaped supporting underframe (22) is fixedly connected with the bottom of the V-shaped supporting frame (18), the center positions of the top ends of the two sides of the cross-shaped supporting underframe (22) are respectively provided with a supporting longitudinal rod (23), a supporting and connecting transverse rod (24) is sleeved at the central position of the supporting longitudinal rod (23), the other end of the supporting connecting cross rod (24) is fixedly connected with one side of the V-shaped supporting frame (18) far away from the anti-skid handrail (7), the top end of the supporting longitudinal rod (23) is fixedly provided with the sound production structure (21).

6. The walker capable of timely alarming and automatically braking as claimed in claim 1, wherein a cross-shaped support groove (25) is formed in a center position of the cross-shaped support chassis (22), a first linkage block (26) and a second linkage block (27) are movably arranged in the cross-shaped support groove (25), a first connecting rod (28) is movably arranged between the first linkage block (26) and the second linkage block (27), a first linkage shaft (29) is arranged in the center position of the first linkage block (26), the center position of one side of the first linkage shaft (29) is movably connected with the first connecting rod (28), a second connecting rod (30) is movably connected to one end, close to the first connecting rod (28), of the first linkage shaft (29), a third connecting rod (31) is movably arranged at the other end of the second connecting rod (30), the other end of the third connecting rod (31) is fixedly connected with one end of the first supporting central shaft (14).

7. The baby walker capable of giving an alarm in time and braking automatically according to claim 1, wherein the sounding structure (21) is provided with a sounding cylinder (32), a sounding air plug (33) is arranged at the center of the top end of the sounding cylinder (32), the interior of the sounding cylinder (32) is of a hollow structure, an air pumping piece (34) is movably arranged at the center of the sounding cylinder (32), a drawing rod (35) is fixedly arranged at the center of the bottom end of the air pumping piece (34), the drawing rod (35) is movably inserted into the center of the bottom end of the sounding cylinder (32), and the bottom end of the drawing rod (35) is fixedly arranged at the center of the top end of the second linkage block (27).

8. The walker capable of giving an alarm in time and braking automatically according to claim 1, wherein a second guiding supporting top cover (36) is arranged at the top end of the automatically braking rear wheel (5), a second supporting central shaft is arranged at the central position of the automatically braking rear wheel (5), a braking triggering structure (38) is arranged at one end of the second supporting central shaft, the structure of the second guiding supporting top cover (36) is the same as that of the second guiding supporting top cover (36), a braking structure (39) is arranged at one side of the second guiding supporting top cover (36), a braking supporting cover (40) is arranged on the braking structure (39), the top of the braking supporting cover (40) is fixedly connected with the second guiding supporting top cover (36), and a buffering supporting toothed ring (41) is movably embedded at the central position of the braking supporting cover (40), the fixed winding of lateral wall that the ring gear (41) was supported in the buffering is equipped with buffering clockwork spring (42), the other end of buffering clockwork spring (42) with the inner wall fixed connection of braking support cover (40), the inner wall that the ring gear (41) was supported in the buffering evenly is equipped with a plurality of braking teeth (43), braking trigger structure (38) activity is located the central point that the ring gear (41) was supported in the buffering puts.

9. The walker capable of giving an alarm in time and automatically braking according to claim 1, wherein a centrifugal spring (44) is arranged on the braking triggering structure (38), one end of the centrifugal spring (44) is fixedly connected with the second supporting central shaft, a triggering block (45) is fixedly arranged at the other end of the centrifugal spring (44), a triggering toothed plate (46) is clamped at two ends of the triggering block (45), a plurality of triggering teeth (37) are arranged on one side of the triggering toothed plate (46), and the triggering teeth (37) are matched with the braking teeth (43).

Technical Field

The invention relates to the technical field of a baby walker, in particular to a baby walker capable of giving an alarm in time and automatically braking.

Background

When a child just learns to walk, the child often pulls out legs to run due to curiosity of the surrounding world, surrounding risks cannot be avoided, particularly, an electric vehicle, a child rides and the like often exist in a city at present, hidden danger is brought to the child just learning to walk, so that adults need to constantly leave the child around the child, the safety of the child is guaranteed, the child cannot run too fast, the ordinary child small-sized scooter does not have an only braking function, the function is single, the safety is not high, meanwhile, the walker cannot adapt to users of different figures, the walker is not suitable for a two-child three-child family at the present stage, and the walker is thrown away after use, and resource waste is caused.

An effective solution to the problems in the related art has not been proposed yet.

SUMMARY OF THE PATENT FOR INVENTION

Aiming at the problems in the related art, the invention provides a baby walker capable of giving an alarm in time and automatically braking, so as to overcome the technical problems in the prior related art.

Therefore, the invention adopts the following specific technical scheme:

the utility model provides a can in time report to police and independently study car of braking, includes support frame and a plurality of universal wheel, the support frame contains support top structure and a plurality of support connection leg, the quantity of support connection leg is four, the universal wheel with support top structure passes through support connection leg swing joint, the universal wheel contains a plurality of leading front wheels and independently brakes the rear wheel.

Further, it is equipped with the support outer lane to support the top structure, it is close to support the outer lane one side central point of direction front wheel puts and is equipped with anti-skidding handrail, the top of anti-skidding handrail is equipped with the rubber cushion, the central point that supports the outer lane puts and is equipped with the shrink and supports the lasso, the central point that the shrink supported the lasso puts and is equipped with and tightens up the telescopic band, it keeps away from to tighten up the telescopic band the one end of rubber cushion is equipped with and tightens up the telescopic rope.

Furthermore, the number of the guide front wheels is two, the guide front wheels comprise a first guide support top cover and a drive front wheel, the first guide support top cover is movably arranged at the top of the drive front wheel, a plurality of support stabilizer bars are movably arranged at the center position of the drive front wheel, a support center hole is formed in the intersection of the support stabilizer bars, a first support center shaft is fixedly inserted in the support center hole, and the center positions of the two sides of the first support center shaft are movably connected with the first guide support top cover.

Further, the top of first direction support overhead guard is equipped with fender mud and supports the overhead guard, the top central point that fender mud supported the overhead guard puts and is equipped with universal support base, the top central point that universal support base put the activity and is equipped with first support connecting rod, the top of first support connecting rod with support connecting leg fixed connection, the both sides bottom that first direction supported the overhead guard all is equipped with the V-arrangement support frame, the bottom movable sleeve of V-arrangement support frame is located the both sides of first support center pin, the V-arrangement support frame is kept away from one side of anti-skidding handrail is equipped with alarm structure.

Further, alarm structure is equipped with alarm drive structure and sound production structure, sound production structure locates alarm drive structure's top, alarm drive structure is equipped with the cross and supports the chassis, the central point that the chassis was supported to the cross put with the bottom fixed connection of V-arrangement support frame, the central point that the chassis both sides top was supported to the cross puts and all is equipped with the support vertical pole, the central point that supports the vertical pole puts the cover and is equipped with the support and connects the horizontal pole, support the other end of connecting the horizontal pole with the V-arrangement support frame is kept away from one side fixed connection of anti-skidding handrail, the top of supporting the vertical pole is fixed to be equipped with sound production structure.

Furthermore, a cross supporting groove is formed in the center of the cross supporting underframe, a first linkage block and a second linkage block are movably arranged in the cross supporting groove, a first connecting rod is movably arranged between the first linkage block and the second linkage block, a first linkage shaft is arranged at the center of the first linkage block, the center of one side of the first linkage shaft is movably connected with the first connecting rod, one end of the first linkage shaft, which is close to the first connecting rod, is movably connected with a second connecting rod, a third connecting rod is movably arranged at the other end of the second connecting rod, and the other end of the third connecting rod is fixedly connected with one end of the first supporting central shaft.

Furthermore, the sounding structure is provided with a sounding cylinder, the top center position of the sounding cylinder is provided with a sounding air plug, the inside of the sounding cylinder is of a hollow structure, the center position of the sounding cylinder is movably provided with an air pumping piece, the bottom center position of the air pumping piece is fixedly provided with a pulling rod, the pulling rod is movably inserted into the bottom center position of the sounding cylinder, and the bottom end of the pulling rod is fixedly arranged at the top center position of the second linkage block.

Furthermore, a second guide supporting top cover is arranged at the top end of the self-braking rear wheel, a second supporting central shaft is arranged at the central position of the self-braking rear wheel, one end of the second supporting central shaft is provided with a braking triggering structure, the structure of the second guiding supporting top cover is the same as that of the second guiding supporting top cover, one side of the second guide supporting top cover is provided with a braking structure, the braking structure is provided with a braking supporting cover, the top of the brake support cover is fixedly connected with the second guide support top cover, a buffer support toothed ring is movably embedded in the center of the brake support cover, the side wall of the buffer supporting gear ring is fixedly wound with a buffer spring, the other end of the buffer spring is fixedly connected with the inner wall of the brake supporting cover, the inner wall of the buffering supporting toothed ring is uniformly provided with a plurality of braking teeth, and the braking trigger structure is movably arranged at the central position of the buffering supporting toothed ring.

Further, the braking trigger structure is equipped with centrifugal spring, centrifugal spring's one end with second support center pin fixed connection, centrifugal spring's the other end is fixed and is equipped with the trigger block, the both ends of trigger block press from both sides and are equipped with the trigger pinion rack, one side of trigger pinion rack is equipped with a plurality of tooth that trigger, trigger tooth with the braking tooth cooperatees.

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

1. keep away from the flexible rope that tightens up that rubber cushion one end was equipped with through tightening up the telescopic band, can use repeatedly usable to the child of different statures, energy-concerving and environment-protective, and can not cause extruded collision to child's upper part of the body, can carry out the stable stay to child's upper part of the body.

2. Because the support connection leg has four and evenly locates the bottom that supports the outer lane, can improve the stability of whole device, prevent that the user from taking place to turn on one's side when walking.

3. The center positions of two sides of the first supporting center shaft are respectively movably connected with the first guiding supporting top cover, the driving front wheel can freely rotate below the first guiding top cover, the universal rotating effect is achieved, and the stability of the first guiding supporting top cover is improved through the arrangement of the V-shaped supporting frame.

4. Through the rotation of drive front wheel, drive first support center pin and rotate, thereby drive the third connecting rod and be circular motion, and then drive ground first linkage piece and be reciprocating motion in the transverse groove of cross support chassis, make second linkage piece reciprocating motion about the longitudinal trough of cross support chassis through setting up of first connecting rod, reciprocating motion through the second linkage piece drives the pull pole and carries out reciprocating motion from top to bottom, thereby make the inner atmospheric pressure of a section of thick bamboo change, send the sound through taking place the gas stopper, when drive front wheel rotational speed is increasingly fast, can drive the motion frequency increase of pull pole, thereby make the sound in the section of thick bamboo that takes place more and more rapid, and then make this device can have the function of warning according to the speed of a motor vehicle.

5. Support the overhead guard through the second direction and can make the universal rotation of autobrake rear wheel, carry out supporting role to autobrake rear wheel simultaneously, because the fixed winding of lateral wall that the cushion supported the ring gear is equipped with the buffering clockwork spring, the other end of buffering clockwork spring and the inner wall fixed connection that the cover was supported in the braking make the cushion support the ring gear and have certain buffering effect through setting up of buffering the clockwork spring, avoid sudden braking to take place the rollover phenomenon.

6. Cooperate with the braking tooth through triggering tooth, can drive the second when independently braking the rear wheel and rotate and support the center pin and rotate, owing to receive the effect of centrifugal force, centrifugal spring takes place the displacement, after triggering tooth and colliding the braking tooth, trigger the piece and can support ring gear in close contact with the buffering, and drive the buffering and support ring gear and rotate, receive the pulling force of buffering clockwork spring, the buffering supports the slow deceleration of ring gear, drive the braking of trigger block simultaneously, can avoid the danger that downhill path section or user's moving speed brought too fast, the safety in utilization is high.

Drawings

In order to more clearly illustrate the embodiments of the patent of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the patent of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a walker capable of alarming and braking autonomously in time according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of the front wheel of the drive according to the present invention;

FIG. 3 is a side view of a cross support chassis according to the present invention;

fig. 4 is a side view of a braking structure according to the present invention.

In the figure:

1. a support frame; 2. a universal wheel; 3. supporting a roof structure; 4. supporting the connecting leg; 5. autonomously braking the rear wheel; 6. a support outer ring; 7. anti-skid handrails; 8. retracting the support collar; 9. tightening the telescopic belt; 10. tightening the telescopic rope; 11. a first guide support canopy; 12. driving the front wheel; 13. a support stabilizer bar; 14. a first support center shaft; 15. a mud-guard supporting top cover; 16. a universal support base; 17. a first support link; 18. a V-shaped support frame; 19. an alarm structure; 20. an alarm drive structure; 21. a sound producing structure; 22. a cross support chassis; 23. supporting the longitudinal rod; 24. supporting and connecting the cross rod; 25. a cross support slot; 26. a first linkage block; 27. a second linkage block; 28. a first connecting rod; 29. a first linkage shaft; 30. a second connecting rod; 31. a third connecting rod; 32. a sound generating cylinder; 33. a sounding air plug; 34. an air pumping sheet; 35. a pull rod; 36. a second guide support canopy; 37. triggering the teeth; 38. a brake triggering mechanism; 39. a braking structure; 40. a brake support housing; 41. a buffer support toothed ring; 42. buffering the spring; 43. braking teeth; 44. a centrifugal spring; 45. a trigger block; 46. trigger the pinion rack.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to explain, by reference, other possible embodiments and advantages of the invention.

Example one

As shown in fig. 1-3:

the invention provides a structural schematic diagram of a walker capable of giving an alarm in time and braking autonomously, which comprises a support frame 1 and a plurality of universal wheels 2, wherein the support frame 1 comprises a support top structure 3 and a plurality of support connecting legs 4, the universal wheels 2 are movably connected with the support top structure 3 through the support connecting legs 4, the universal wheels 2 comprise a plurality of guide front wheels 5 and autonomous braking rear wheels 5, the support top structure 3 is provided with a support outer ring 6, the support outer ring 6 is provided with an anti-skidding handrail 7 at the central position of one side close to the guide front wheels 5, the top of the anti-skidding handrail 7 is provided with a rubber cushion, the arrangement of the rubber cushion can prevent a child from being rubbed by a palm when the child runs quickly, the safety of the walker is improved, the central position of the support outer ring 6 is provided with a retractable support ferrule 8, the central position of the retractable support ferrule 8 is provided with a tightening retractable belt 9, the one end that tightens up telescopic band 9 and keep away from the rubber cushion is equipped with tightens up telescopic rope 10, can use the child of different statures, and can not cause extruded collision to child's upper part of the body, can carry out the stable support to child's upper part of the body, the quantity of guide front wheel 5 is two, guide front wheel 5 contains first direction support overhead guard 11 and drive front wheel 12, first direction support overhead guard 11 activity is located the top of drive front wheel 12, the central point of drive front wheel 12 puts the activity and is equipped with a plurality of support stabilizer bars 13, the cross department of support stabilizer bar 13 is equipped with the support centre bore, the fixed first support center axle 14 that alternates in the support centre bore, the both sides central point of first support center axle 14 all with first direction support overhead guard 11 swing joint can make drive front wheel 12 in the below free rotation of first direction overhead guard, and has the effect of universal rotation, the top end of the first guiding supporting top cover 11 is provided with a mud blocking supporting top cover 15, the top central position of the mud blocking supporting top cover 15 is provided with a universal supporting base 16, the top central position of the universal supporting base 16 is movably provided with a first supporting connecting rod 17, the top end of the first supporting connecting rod 17 is fixedly connected with the supporting connecting leg 4, the bottom ends of the two sides of the first guiding supporting top cover 11 are respectively provided with a V-shaped supporting frame 18, the stability of the first guiding supporting top cover 11 is improved through the arrangement of the V-shaped supporting frame 18, the bottom end of the V-shaped supporting frame 18 is movably sleeved on the two sides of the first supporting central shaft 14, one side of the V-shaped supporting frame 18, which is far away from the anti-skid handrail 7, is provided with an alarm structure 19, the alarm structure 19 is provided with an alarm driving structure 20 and a sounding structure 21, the sounding structure 21 is arranged on the top end of the alarm driving structure 20, the alarm driving structure 20 is provided with a cross support chassis 22, the center position of the cross support chassis 22 is fixedly connected with the bottom of the V-shaped support frame 18, the center positions of the top ends of the two sides of the cross support chassis 22 are both provided with support longitudinal rods 23, the center position of the support longitudinal rods 23 is sleeved with a support connecting cross rod 24, the other end of the support connecting cross rod 24 is fixedly connected with one side of the V-shaped support frame 18 away from the anti-skid handrail 7, the top end of the support longitudinal rod 23 is fixedly provided with the sound production structure 21, the center position of the cross support chassis 22 is provided with a cross support groove 25, a first linkage block 26 and a second linkage block 27 are movably arranged in the cross support groove 25, a first connecting rod 28 is movably arranged between the first linkage block 26 and the second linkage block 27, a first linkage shaft 29 is arranged at the center position of the first linkage block 26, the center position of one side of the first linkage shaft 29 is movably connected with the first connecting rod 28, one end of the first linkage shaft 29 close to the first connecting rod 28 is movably connected with a second connecting rod 30, the other end of the second connecting rod 30 is movably provided with a third connecting rod 31, the other end of the third connecting rod 31 is fixedly connected with one end of the first supporting central shaft 14, the first supporting central shaft 14 is driven to rotate by the rotation of the driving front wheel 12, so as to drive the third connecting rod 31 to do circular motion, further drive the first linkage block 26 to do reciprocating motion in the transverse groove of the cross supporting underframe 22, the second linkage block 27 does up-and-down reciprocating motion in the longitudinal groove of the cross supporting underframe 22 by the arrangement of the first connecting rod 28, the sounding structure 21 is provided with a sounding cylinder 32, and the center position of the top end of the sounding cylinder 32 is provided with a sounding air plug 33, the interior of the sound generating cylinder 32 is of a hollow structure, the central position of the sound generating cylinder 32 is movably provided with an air extracting piece 34, the bottom central position of the air extracting piece 34 is fixedly provided with a drawing rod 35, the drawing rod 35 is movably inserted into the bottom central position of the sound generating cylinder 32, the bottom end of the drawing rod 35 is fixedly arranged at the top central position of the second linkage block 27, the drawing rod 35 is driven to do up-and-down reciprocating motion through the reciprocating motion of the second linkage block 27, so that the air pressure at the inner end of the sound generating cylinder is changed, sound is generated through the air plug, when the rotating speed of the front driving wheel 12 is faster and faster, the moving frequency of the drawing rod 35 can be driven to increase, so that the sound in the sound generating cylinder is rapid, and the device can have the function of warning and reminding more and more according to the speed of the vehicle.

The detailed usage and function of the first embodiment: the user is put into the telescopic support ring, the inner diameter of the telescopic tightening belt 9 is adapted to the stature of the user by tightening or expanding the telescopic tightening rope 10, the upper body armpit area of the user can be supported and protected by tightening the telescopic tightening belt 9, the collision between the user and the support outer ring 6 due to unstable standing in the walking process is avoided, the use safety of the device is improved, the support connecting legs 4 are four and are uniformly arranged at the bottom end of the support outer ring 6, the stability of the whole device can be improved, the side turning of the user in the walking process is prevented, when the user walks, the front wheel 12 can be pushed and driven to rotate, so that the first support central shaft 14 rotates, and the first support central shaft 14 is fixedly connected with the third connecting rod 31, so that the third connecting rod 31 is driven to do circular motion, and the first linkage block 26 is driven to do reciprocating motion in the transverse groove of the cross support chassis 22, the second linkage block 27 is driven to do up-and-down reciprocating motion in the longitudinal groove of the cross-shaped support chassis 22 through the arrangement of the first connecting rod 28, the bottom end of the drawing rod 35 is fixed at the top center position of the second linkage block 27, the drawing rod 35 is driven to do up-and-down reciprocating motion through the reciprocating motion of the second linkage block 27, accordingly, the air pressure at the inner end of the generating cylinder changes, the air plug generates sound, when the rotation speed of the front driving wheel 12 is faster and faster, the movement frequency of the drawing rod 35 can be increased, and the sound in the generating cylinder is accelerated and more rapidly, so that the device can have the function of warning and reminding according to the speed of the vehicle.

Example two

As shown in fig. 1 and 4:

the invention provides a structural schematic diagram of a walker capable of giving an alarm in time and braking automatically, which comprises a support frame 1 and a plurality of universal wheels 2, wherein the support frame 1 comprises a support top structure 3 and a plurality of support connecting legs 4, the number of the support connecting legs 4 is four, the universal wheels 2 are movably connected with the support top structure 3 through the support connecting legs 4, the universal wheels 2 comprise a plurality of guide front wheels 5 and an automatic braking rear wheel 5, the top end of the automatic braking rear wheel 5 is provided with a second guide support top cover 36, the automatic braking rear wheel 5 can rotate in a universal direction through the second guide support top cover 36 and simultaneously support the automatic braking rear wheel 5, a second support central shaft is arranged at the central position of the automatic braking rear wheel 5, one end of the second support central shaft is provided with a brake triggering structure 38, the structure of the second guide support top cover 36 is the same as that of the second guide support top cover 36, one side that the second direction supported the overhead guard 36 is equipped with braking structure 39, braking structure 39 is equipped with braking support cover 40, the top of braking support cover 40 with second direction supports overhead guard 36 fixed connection, the central point of braking support cover 40 puts the activity and inlays and be equipped with buffering support ring gear 41, the fixed winding of lateral wall that buffering support ring gear 41 is equipped with buffering clockwork spring 42, the other end of buffering clockwork spring 42 with the inner wall fixed connection of braking support cover 40, the setting through buffering clockwork spring 42 makes buffering support ring gear 41 have certain buffering effect, the inner wall that buffering support ring gear 41 evenly is equipped with a plurality of braking teeth 43, braking trigger structure 38 activity is located the central point of buffering support ring gear 41 puts, braking trigger structure 38 is equipped with centrifugal spring 44, centrifugal spring 44's one end with second support center pin fixed connection, the other end of the centrifugal spring 44 is fixedly provided with a trigger block 45, two ends of the trigger block 45 are provided with trigger toothed plates 46 in a clamping manner, one side of each trigger toothed plate 46 is provided with a plurality of trigger teeth 37, each trigger tooth 37 is matched with the corresponding brake tooth 43, when the self-braking rear wheel 5 rotates, the second support central shaft can be driven to rotate, due to the action of centrifugal force, the centrifugal spring 44 displaces and can perform circular motion around the second support central shaft, when the rotation speed of the self-braking rear wheel 5 is high, the larger the motion displacement of the trigger block 45 is, when the trigger teeth 37 collide with the brake teeth 43, the trigger block 45 can be in close contact with the buffer support toothed ring 41 and drive the buffer support toothed ring 41 to rotate, and due to the tensile force of the buffer support toothed ring 42, the buffer support toothed ring 41 slowly slows down, meanwhile, the trigger block 45 is driven to brake, so that the danger caused by the fact that a downhill road section or the moving speed of a user is too high can be avoided, and the use safety is high.

The detailed application method and function of the second embodiment: when the user moves, drive autonomic braking rear wheel 5 and rotate, thereby make the second support center pin rotate, when autonomic braking rear wheel 5 rotational speed crescent, the rotational speed of second support center pin also crescent, thereby make the centrifugal force that trigger block 45 received bigger and bigger, the motion displacement that drives trigger block 45 is bigger, after trigger tooth 37 collides braking tooth 43, trigger block 45 can with buffering support ring gear 41 in close contact with, and drive buffering support ring gear 41 and rotate, receive the pulling force of buffering clockwork spring 42, buffering support ring gear 41 slows down, drive trigger block 45 braking simultaneously, avoid sudden braking to take place the turnover phenomenon, can avoid the danger that downhill path or user's moving speed brought too fast simultaneously, high safety in utilization.

In conclusion, by means of the technical scheme of the invention, the rubber cushion is arranged to prevent hands of children from being rubbed when the children run quickly, so that the safety of the device is improved, the children with different figures can be used by tightening the telescopic ropes arranged at the ends of the telescopic belts far away from the rubber cushion, the upper bodies of the children cannot be extruded and collided, the upper bodies of the children can be stably supported, the device is reusable, energy-saving and environment-friendly, the stability of the whole device can be improved due to the fact that the four supporting connecting legs are uniformly arranged at the bottom end of the supporting outer ring, the user can be prevented from turning on one side when the user walks, the center positions of the two sides of the first supporting central shaft are movably connected with the first guiding supporting top cover, and the driving front wheels can freely rotate below the first guiding top cover, the device has the effect of universal rotation, the stability of the first guide support top cover is improved through the arrangement of the V-shaped support frame, the first support central shaft is driven to rotate through the rotation of the drive front wheel, so as to drive the third connecting rod to do circular motion, further drive the first linkage block to do reciprocating motion in the transverse groove of the cross support underframe, the second linkage block does reciprocating motion up and down in the longitudinal groove of the cross support underframe through the arrangement of the first connecting rod, the drawing rod is driven to do reciprocating motion up and down through the reciprocating motion of the second linkage block, so that the air pressure at the inner end of the generating cylinder is changed, the generating air plug generates sound, when the rotation speed of the drive front wheel is faster and faster, the movement frequency of the drawing rod can be driven to increase, so that the sound in the generating cylinder is more and more rapid, and the device has the function of warning and reminding according to the speed of the vehicle, the self-braking rear wheel can rotate universally through the second guide supporting top cover, the self-braking rear wheel is supported, the buffer spring is fixedly wound on the side wall of the buffer supporting toothed ring, the other end of the buffer spring is fixedly connected with the inner wall of the braking supporting cover, the buffer supporting toothed ring has a certain buffer effect through the arrangement of the buffer spring, the phenomenon of overturning caused by sudden braking is avoided, the trigger teeth are matched with the braking teeth, the second supporting central shaft can be driven to rotate when the self-braking rear wheel rotates, the centrifugal spring is displaced under the action of centrifugal force, when the trigger teeth collide with the braking teeth, the trigger block can be in close contact with the buffer supporting toothed ring and drive the buffer supporting toothed ring to rotate, the buffer supporting toothed ring slowly decelerates under the action of the tensile force of the buffer spring, and the trigger block is driven to brake at the same time, the danger caused by the too fast moving speed of a downhill road section or a user can be avoided, the use safety is high.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.