CN107444460B - Safety protector for baby carriage - Google Patents
Safety protector for baby carriage Download PDFInfo
- Publication number
- CN107444460B CN107444460B CN201710795186.8A CN201710795186A CN107444460B CN 107444460 B CN107444460 B CN 107444460B CN 201710795186 A CN201710795186 A CN 201710795186A CN 107444460 B CN107444460 B CN 107444460B
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- China
- Prior art keywords
- shell
- limiting
- swing arm
- transmission shaft
- cam disc
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- 230000001012 protector Effects 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 210000000078 claw Anatomy 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
- B62B9/08—Braking mechanisms; Locking devices against movement
- B62B9/087—Braking mechanisms; Locking devices against movement by locking in a braking position
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
- Handcart (AREA)
Abstract
The invention relates to the technical field of bassinet safety, and discloses a bassinet safety protector, which comprises a shell, wherein a transmission shaft is arranged in the shell, two ends of the transmission shaft penetrate through the shell to be rotationally connected with the shell, and a positioning bracket is arranged on the outer side of the shell; the transmission shaft is provided with a cam disc and a limiting disc, the cam disc and the limiting disc are fixedly connected with the transmission shaft, a plurality of bosses are uniformly arranged on the circumferential surface of the cam disc, and limiting teeth are uniformly arranged on the circumferential surface of the limiting disc; the edge that lies in the cam disc in the casing is equipped with the pivot, is equipped with the swing arm in the pivot, and the one end of swing arm is equipped with the spacing claw that corresponds with spacing tooth, and the other end of swing arm is equipped with the balancing weight, and the balancing weight is equipped with the extension spring with the circumference butt of cam disc between balancing weight and the casing. The invention has the advantage of safer use.
Description
Technical Field
The invention relates to the technical field of bassinet safety, in particular to a bassinet safety protector.
Background
The baby carrier is a large door class in the toys for children, and comprises five main classes of children's bicycles, children's carts, baby walker, children's tricycles and children's electric vehicles. Among the many strollers, child strollers are popular, and parents put their children in the strollers and push the strollers out when they go out. The conventional children's barrow generally comprises a frame and a seat, wherein the frame is provided with front wheels and rear wheels, the front wheels are universal wheels, namely, the front wheels can be steered, the rear wheels cannot be steered, the rear wheels are connected with the frame through rear wheel shafts, the rear end of the frame is also provided with a handle, and a stroller is pushed to move forwards by a stroller operator holding the handle. However, in some cases, the stroller has a safety hidden trouble, for example, when pushing the stroller down a slope, the stroller needs to hold the handle, if the stroller inadvertently releases the handle, the stroller will accelerate downward along the slope, the front wheels can freely turn, the whole stroller body can move onto the motor vehicle lane to cause accidents, and the stroller can also collide with obstacles to cause personal injury of the stroller, so that the life of the stroller is threatened.
Disclosure of Invention
The invention aims to solve the problems of the children's barrow in the prior art, and provides the safety protector for the children's barrow, which can automatically lock the rear wheels by self when a user accidentally releases the handle of the children's barrow in a downhill, so that the children's barrow stops moving, and the safety protector is safer and more reliable to use.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the safety protector for the baby carrier comprises a shell, wherein a transmission shaft is arranged in the shell, two ends of the transmission shaft penetrate through the shell and are in rotary connection with the shell, and a positioning bracket is arranged on the outer side of the shell; the transmission shaft is provided with a cam disc and a limiting disc, the cam disc and the limiting disc are fixedly connected with the transmission shaft, a plurality of bosses are uniformly arranged on the circumferential surface of the cam disc, and limiting teeth are uniformly arranged on the circumferential surface of the limiting disc; the cam is characterized in that a rotating shaft is arranged at the edge of the cam disc in the shell, a swing arm is arranged on the rotating shaft, a limit claw corresponding to the limit tooth is arranged at one end of the swing arm, a balancing weight is arranged at the other end of the swing arm, the balancing weight is abutted to the circumferential surface of the cam disc, and a tension spring is arranged between the balancing weight and the shell.
The safety protector of the baby carrier is arranged on the rear wheel of the baby carrier, the transmission shaft is fixedly connected with the rear wheel shaft coaxially, the positioning bracket is connected with the frame of the baby carrier, when the rear wheel rotates, the transmission shaft and the rear wheel shaft synchronously rotate, and the shell is connected with the frame without rotating; when the baby carrier descends, a baby carrier is controlled to move forwards by holding the handle by a baby carrier driver, at the moment, the speed of the baby carrier is consistent with the walking speed of the baby carrier driver, the rotating speed of the rear wheel is lower, the rear wheel shaft drives the cam plate and the limiting plate to synchronously rotate, the balancing weight always keeps abutting with the cam plate under the action of the tension spring, the center distance between the limiting claw and the limiting plate is larger, the limiting claw cannot be clamped into the limiting teeth, and the rear wheel can normally move forwards; when the handle is loosened by a cart person due to various accidents or emergency conditions, the cart is accelerated to move along a downhill slope under the action of gravity, the speed is far greater than the walking speed of the cart person, the rotating speed of a rear wheel is increased, the rotating speed of a rear wheel shaft, a transmission shaft and a cam disc is synchronously increased, the kinetic energy of the cam disc is increased, the swing amplitude of a swing arm is increased when a lug on the cam disc impacts a balancing weight, the balancing weight is separated from the cam disc, the center distance between a limiting claw and the limiting disc is reduced, the limiting claw is clamped into a limiting tooth to limit, the rear wheel is self-locked and stops rotating, and the cart stops after moving a small distance along the downhill slope, so that the safety protection function is achieved.
Preferably, the shell comprises a left shell and a right shell, the centers of the inner sides of the left shell and the right shell are respectively provided with a bearing seat, bearings are respectively arranged in the bearing seats, and the transmission shaft is rotationally connected with the bearings; the transmission shaft is provided with a flange, and the cam plate and the limiting plate are fixedly connected with the flange through bolts. Compact structure, small volume, stable and reliable connection and convenient installation.
Preferably, the positioning bracket comprises a positioning rod and a U-shaped clamping block, one end of the positioning rod is provided with a connecting flange, the connecting flange is connected with the shell through a bolt, and the U-shaped clamping block is connected with the other end of the positioning rod through a bolt. The U-shaped clamping block is connected with the frame, so that the frame is limited and stable, and the connection and the disassembly are very convenient.
Preferably, an arc-shaped guide groove is arranged between two adjacent bosses on the cam plate. The arc guide slot plays a guiding role on the balancing weight, and when the balancing weight moves along the arc guide slot, the limiting claw can be prevented from being blocked into the limiting teeth.
Preferably, the balancing weight is cylindrical, a concave cavity is formed in the balancing weight, an end cover is arranged at the opening end of the concave cavity, and balancing weight powder is filled in the concave cavity. The powder with different densities can be replaced to change the weight of the balancing weight, so that the minimum rotating speed of the rear wheel during self-locking can be adjusted.
Preferably, the inner side of the shell is provided with a sliding seat, a sliding rod is arranged in the sliding seat, the axis of the sliding rod is vertical to the axis of the transmission shaft, the side surface of the sliding seat is provided with a long slot hole, the rotation shaft penetrates through the long slot hole and is vertically and fixedly connected with the side surface of the sliding rod, the upper end of the sliding rod is connected with a brake cable, the outer end of the brake cable extends out of the shell, the outer end of the brake cable is connected with a brake handle, and a reset spring sleeved on the brake cable is arranged between the upper end of the sliding rod and the shell. The cart is pushed by the cart person to play outdoors, the condition of raining is met, or the condition that the bus needs to be driven when the cart person goes out to play is met, at the moment, the cart person can push the cart to run, the rotating speed of the rear wheels is far greater than the normal walking speed of the cart person, and the rear wheels can be self-locked by the safety protector; when the user needs to accelerate and does not need rear wheel self-locking, the brake handle needs to be pulled down, the brake handle pulls the slide bar to move upwards through the brake cable, the distance between the limiting claw and the limiting teeth is increased, even if the speed of the rear wheel is increased, the rear wheel cannot be self-locked, the brake handle is released, and the slide bar is reset under the action of the reset spring.
Preferably, a swing arm limiting rod is arranged at the lower end of the sliding rod; when the brake handle is pressed down, the brake cable pulls the slide bar to slide upwards, the swing arm is limited by the swing arm limiting rod, and the balancing weight is separated from the cam disc. When a child needs to be pushed in an accelerating way, a brake handle is pressed down, a swing arm limiting rod moves along with the movement of a slide rod, a balancing weight is limited by the swing arm limiting rod and is completely separated from a cam disc, a rear wheel cannot collide with the balancing weight no matter how fast, the cam disc can effectively prevent the rear wheel from self-locking, and abnormal sound generated by high-speed collision between the cam disc and the balancing weight can be prevented.
Therefore, the invention has overspeed safety protection function, and the rear wheel can be self-locked when the baby carrier is overspeed; especially when downhill, the handcart person accidentally loosens the handle, and the rear wheel is auto-lock through bassinet safety protector, uses safelyr.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the states of the cam plate, the limiting plate and the swing arm when the baby carriage moves normally.
Fig. 3 is a schematic view of the states of the cam plate, the limiting plate and the swing arm when the baby carrier overspeed.
Fig. 4 is a schematic view showing the states of the swing arm and the cam plate when the brake handle is pulled down.
Fig. 5 is a schematic connection diagram of the swing arm and the sliding seat.
Fig. 6 is a top view of the swing arm of fig. 5.
FIG. 7 is a schematic illustration of the present invention in connection with a single rear wheel.
FIG. 8 is a schematic illustration of the present invention in connection with a dual rear wheel.
In the figure: the brake device comprises a shell 1, a left shell 100, a right shell 101, a bearing 102, a transmission shaft 2, a flange 200, a positioning bracket 3, a positioning rod 300, a U-shaped clamping block 301, a connecting flange 302, a cam disc 4, a boss 40, an arc-shaped guide groove 41, a limiting disc 5, limiting teeth 50, a sliding seat 6, a sliding rod 7, a swing arm limiting rod 8, a long slot hole 9, a rotating shaft 10, a swing arm 11, a limiting claw 110, a balancing weight 111, a concave cavity 112, an end cover 113, a tension spring 12, a brake cable 13, a brake handle 14, a return spring 15, a rear wheel 16, a coupler 17, a rear wheel shaft 18 and a frame 19.
Detailed Description
The invention is further described with reference to the drawings and detailed description which follow:
the safety protector for the baby carrier as shown in fig. 1 and 2 comprises a shell 1, wherein a transmission shaft 2 is arranged in the shell, two ends of the transmission shaft penetrate through the shell to be rotationally connected with the shell, and a positioning bracket 3 is arranged on the outer side of the shell; the shell 1 comprises a left shell 100 and a right shell 101, the centers of the inner sides of the left shell and the right shell are respectively provided with a bearing seat, bearings 102 are respectively arranged in the bearing seats, and a transmission shaft is rotationally connected with the bearings; the positioning bracket 3 comprises a positioning rod 300 and a U-shaped clamping block 301, one end of the positioning rod is provided with a connecting flange 302, the connecting flange is connected with the shell through a bolt, and the U-shaped clamping block is connected with the other end of the positioning rod through a bolt.
The transmission shaft 2 is provided with a cam disc 4 and a limit disc 5, the cam disc and the limit disc are fixedly connected with the transmission shaft, a plurality of bosses 40 are uniformly arranged on the circumferential surface of the cam disc 4, an arc-shaped guide groove 41 is arranged between two adjacent bosses on the cam disc, and limit teeth 50 are uniformly arranged on the circumferential surface of the limit disc 5; the transmission shaft 2 is provided with a flange 200, and the cam plate and the limiting plate are fixedly connected with the flange through bolts;
as shown in fig. 1 and 5, a sliding seat 6 is arranged on the inner side of a right shell 101, a sliding rod 7 is arranged in the sliding seat, a swing arm limiting rod 8 is arranged at the lower end of the sliding rod, the axis of the sliding rod is vertical to the axis of a transmission shaft, a long slot 9 is arranged on the side surface of the sliding seat, a rotating shaft 10 penetrates through the long slot and is vertically and fixedly connected with the side surface of the sliding rod, a swing arm 11 is arranged at the outer end of the rotating shaft 10, a limiting claw 110 corresponding to a limiting tooth is arranged at one end of the swing arm, a balancing weight 111 is arranged at the other end of the swing arm, the balancing weight is abutted with the circumferential surface of a cam disc, and a tension spring 12 is arranged between the balancing weight and the shell; as shown in fig. 6, the balancing weight 111 is cylindrical, a concave cavity 112 is arranged in the balancing weight, an end cover 113 is arranged at the opening end of the concave cavity, and the concave cavity is filled with balancing weight powder, so that a technician can select balancing weight powder with different densities according to actual needs, and the quality of the balancing weight is changed; the upper end of the sliding rod is connected with a brake cable 13, the outer end of the brake cable extends out of the shell, the outer end of the brake cable is connected with a brake handle 14, and a reset spring 15 sleeved on the brake cable is arranged between the upper end of the sliding rod and the shell; as shown in fig. 4, when the brake handle is pressed down, the brake cable pulls the slide bar to slide upwards, the swing arm is limited by the swing arm limiting rod, and the balancing weight is separated from the cam disc.
The first installation mode of the invention is shown in fig. 7, the rear wheel 16 of the baby carrier in fig. 7 is a single rear wheel, one side of the shell is provided with a positioning bracket 3, one end of the transmission shaft is connected with a rear wheel shaft 18 through a coupling 17, and then the positioning bracket 3 is connected with a frame 19; the second installation mode of the invention is shown in fig. 8, the rear wheels of the baby carriage in fig. 8 are double rear wheels, the two sides of the shell are provided with the positioning brackets 3, the two ends of the transmission shaft are respectively connected with the rear wheel shafts of the two rear wheels through the couplings 17, and then the two positioning brackets are correspondingly connected with the frame one by one.
The principle of the invention is as follows, in combination with the accompanying drawings: the invention is connected with the rear wheel of the baby carrier according to the state shown in fig. 7 or 8, and the brake handle is connected with the handle of the baby carrier; when a cart is normally pushed, the speed of the cart is consistent with the walking speed of the cart, the rotating speed of the rear wheels is slower, the rear wheels rotate to drive the axles to rotate, the axles drive the cam disc and the limiting disc to synchronously rotate, the balancing weights are always kept in abutting connection with the cam disc under the action of the tension springs, the center distance between the limiting claw and the limiting disc is large, the limiting claw cannot be clamped into the limiting teeth, at the moment, the states of the swing arm, the cam disc and the limiting disc are shown as in fig. 2, and when the cart is moved forwards, the rotating directions of the cam disc and the limiting disc are shown as directions shown by arrows in the drawing;
when the stroller descends, a handle is loosened by various accidents or sudden conditions, the stroller accelerates along the descending slope under the action of gravity, the speed is far greater than the walking speed of the stroller, the rotating speed of the rear wheel is increased, the rotating speed of the rear wheel shaft, the rotating shaft and the cam disc is synchronously increased, the kinetic energy of the cam disc is increased, the swing amplitude of the swing arm is increased when the bump on the cam disc impacts the balancing weight, the balancing weight is separated from the cam disc, the center distance between the limiting claw and the limiting disc is reduced, the limiting claw is clamped into the limiting teeth to limit, the rear wheel is self-locked and stops rotating, and the stroller stops after moving a small distance along the descending slope, so that the safety protection function is realized;
when the stroller is actively required to increase the speed of the stroller, for example, a user rains to push the stroller to run home or go out to play with a catch-up, in this case, the user needs to accelerate and does not need rear wheel self-locking, only by pulling down the brake handle, the brake handle pulls the slide bar to move upwards through the brake wire, the balancing weight is completely separated from the cam disc, the limiting claw and the limiting teeth are completely separated due to the increase of the distance, as shown in fig. 4, even if the speed of the rear wheel is increased, the rear wheel is not self-locked, the brake handle is released, and the slide bar is reset under the action of the reset spring.
Claims (7)
1. The safety protector for the baby carrier comprises a shell and is characterized in that a transmission shaft is arranged in the shell, two ends of the transmission shaft penetrate through the shell and are in rotary connection with the shell, and a positioning bracket is arranged on the outer side of the shell;
the transmission shaft is provided with a cam disc and a limiting disc, the cam disc and the limiting disc are fixedly connected with the transmission shaft, a plurality of bosses are uniformly arranged on the circumferential surface of the cam disc, and limiting teeth are uniformly arranged on the circumferential surface of the limiting disc;
the cam is characterized in that a rotating shaft is arranged at the edge of the cam disc in the shell, a swing arm is arranged on the rotating shaft, a limit claw corresponding to the limit tooth is arranged at one end of the swing arm, a balancing weight is arranged at the other end of the swing arm, the balancing weight is abutted to the circumferential surface of the cam disc, and a tension spring is arranged between the balancing weight and the shell.
2. The safety protector for children's vehicle according to claim 1, wherein the said body includes left body, right body, the inboard center of left body, right body has bearing blocks, there are bearings in the bearing block, the said drive shaft is connected with bearing rotation; the transmission shaft is provided with a flange, and the cam plate and the limiting plate are fixedly connected with the flange through bolts.
3. The safety protector for children's vehicle according to claim 1, wherein the positioning bracket comprises a positioning rod and a U-shaped clamping block, one end of the positioning rod is provided with a connecting flange, the connecting flange is connected with the shell through a bolt, and the U-shaped clamping block is connected with the other end of the positioning rod through a bolt.
4. A child car safety protector according to claim 1, wherein the cam plate is provided with arcuate guide grooves between two adjacent bosses.
5. A safety protector for a baby carrier according to claim 1, 2, 3 or 4, wherein the weight is cylindrical, a cavity is provided in the weight, an end cap is provided at an open end of the cavity, and weight powder is filled in the cavity.
6. The safety protector for children's vehicle according to claim 1, wherein the inner side of the casing is provided with a sliding seat, a sliding rod is arranged in the sliding seat, the axis of the sliding rod is vertical to the axis of the transmission shaft, the side surface of the sliding seat is provided with a long slot hole, the rotation shaft penetrates through the long slot hole to be vertically and fixedly connected with the side surface of the sliding rod, the upper end of the sliding rod is connected with a brake cable, the outer end of the brake cable extends out of the casing, the outer end of the brake cable is connected with a brake handle, and a reset spring sleeved on the brake cable is arranged between the upper end of the sliding rod and the casing.
7. The safety protector for children's vehicle according to claim 6, wherein the lower end of the slide bar is provided with a swing arm limiting rod; when the brake handle is pressed down, the brake cable pulls the slide bar to slide upwards, the swing arm is limited by the swing arm limiting rod, and the balancing weight is separated from the cam disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710795186.8A CN107444460B (en) | 2017-09-06 | 2017-09-06 | Safety protector for baby carriage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710795186.8A CN107444460B (en) | 2017-09-06 | 2017-09-06 | Safety protector for baby carriage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107444460A CN107444460A (en) | 2017-12-08 |
| CN107444460B true CN107444460B (en) | 2024-03-22 |
Family
ID=60494962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710795186.8A Active CN107444460B (en) | 2017-09-06 | 2017-09-06 | Safety protector for baby carriage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107444460B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107928923B (en) * | 2017-12-22 | 2020-01-07 | 蒋斌 | Sickbed frame with slope self-locking function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5149113A (en) * | 1991-04-05 | 1992-09-22 | Alldredge Rodney H | Convertible stroller and car seat |
| CN203358656U (en) * | 2013-07-24 | 2013-12-25 | 张永海 | Automatic braking safety device of baby carriage |
| CN204567739U (en) * | 2015-05-05 | 2015-08-19 | 南通职业大学 | A kind of perambulator of novel anti-slip structure |
| CN207535970U (en) * | 2017-09-06 | 2018-06-26 | 青岛乐悠悠童车有限公司 | Perambulator protector |
-
2017
- 2017-09-06 CN CN201710795186.8A patent/CN107444460B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5149113A (en) * | 1991-04-05 | 1992-09-22 | Alldredge Rodney H | Convertible stroller and car seat |
| CN203358656U (en) * | 2013-07-24 | 2013-12-25 | 张永海 | Automatic braking safety device of baby carriage |
| CN204567739U (en) * | 2015-05-05 | 2015-08-19 | 南通职业大学 | A kind of perambulator of novel anti-slip structure |
| CN207535970U (en) * | 2017-09-06 | 2018-06-26 | 青岛乐悠悠童车有限公司 | Perambulator protector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107444460A (en) | 2017-12-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 2601, room 18, 2888 Binhai Avenue, Huangdao District, Qingdao, Shandong Applicant after: Qingdao Leyou home furnishing Co.,Ltd. Applicant after: Yu Ruimei Address before: No. 2601, room 18, 2888 Binhai Avenue, Huangdao District, Qingdao, Shandong Applicant before: QINGDAO LEYOUYOU BABY CARRIER CO. Applicant before: Yu Ruimei |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |