CN112339835A - Seat of baby carriage - Google Patents

Abstract

The invention discloses a seat of a baby carriage, which is called as a seat below and comprises a frame, a backrest, a turning plate, connecting plates, a slot frame, a button, a wedge-shaped block, a nut, an ejector rod, a hook spring, a set screw and a hook, wherein the frame is a main body supporting structure of the seat, the turning plate is rotatably connected with the frame through the two connecting plates, the backrest can slide up and down and be positioned at the rear end of the frame, when the backrest is positioned at the lowest end position, the turnover plate turns forwards to enable the bottom of the seat to form a flat plane for the infant to lie down and play, the turnover plate turns backwards to enable the seat to become a protective vehicle for the infant to learn to walk, the upper end of the slot frame and the upper end of the rear side of the frame form a revolute pair, the lower end of the slot frame adjusts the pitching inclination angle of the seat through an adjusting mechanism consisting of a wedge block, a nut and an ejector rod, and the modular quick-inserting structure consisting of the slot frame, a button, a hook spring, a set screw and a hook can realize the efficient and quick connection and separation of the seat and a frame mechanism.

Description

Seat of baby carriage

Technical Field

The invention relates to the field of a baby carriage, in particular to a seat of the baby carriage.

Background

The baby carriage is a walking tool for babies, and the space in the baby carriage body can be used for the babies to sit, lie and the like, so that the baby carriage greatly facilitates the traveling activities of parents carrying the babies, and provides comfortable sitting and growing space for the babies; when the baby is small, the baby still needs to lie down when going out, and the baby carriage with the soft shock absorption and the high carriage style is more convenient for parents to take care of the baby; when the baby is large, the baby can eat certain baby meals, high dining chairs are often used for feeding the baby conveniently, a safety vehicle for assisting the baby to walk is needed for the baby in the learning and walking stage, the activity amount is large at the moment, and therefore the baby carriage with a lower gravity center needs to be used for preventing the baby carriage from overturning or falling down to cause large damage; in the process of using the baby carriage, some babies face parents to have a sense of safety, and other babies face forwards to facilitate observation of fresh things along the way, so that the baby carriage is required to have a function of adjusting the direction of the seat; the existing baby carriage has single function, and generally becomes an idle product due to the fact that the service life of the baby carriage can not meet the growth requirements of infants about one year; moreover, most of the existing baby carriages do not have the function of a cradle, and parents can only hold the baby to shake when the baby cries due to the emotions of fussy or boring, so that the crying of the baby can be stopped, which can increase the physical burden of the parents and the inconvenience in movement.

For satisfying the different demands of each growing stage of infant, purchase different perambulator and supplementary chair can lead to the family to purchase the expense increase, cause the waste of resource, also occupy more indoor parking space, along with life style's change, diversified demand also appears in the consumer to the perambulator, and the product of function singleness can not satisfy people to the diversified demand of perambulator.

The invention patent with publication number CN102616263A discloses a cradle type multifunctional baby carriage, wherein the lower end of the basket body is provided with a basket body seat, the upper side of the basket plate is provided with a basket body groove, and the basket body seat can rotate in the basket body groove, so as to realize the cradle function of the longitudinal swing of the basket body; in addition, because the cradle swings longitudinally, the infant can have a head-foot high state when using the cradle, and the infant can show different degrees of tension or fear in the state, which can generate adverse effects on the fragile psychology of the infant.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a baby carriage seat which is novel in structure, rich in functions and convenient to operate.

The technical scheme adopted by the invention is as follows: the utility model provides a seat of perambulator, is following to call the seat, includes frame, back, turns over board, even board, slot frame, button, wedge, nut, ejector pin, couple spring, holding screw, couple, its characterized in that: the frame is a main body supporting structure of the chair, the turning plate is rotationally connected with the frame through two connecting plates, the backrest can slide up and down and be positioned at the rear end of the frame, so that infants with different body types and heights can be adjusted to comfortable sitting postures, when the backrest is at the lowest end position, the turning plate turns forwards to form a flat plane at the bottom of the seat for the infant to lie and play, the turning plate turns backwards to form a protective vehicle for the infant to learn to walk, the upper end of the slot frame and the upper end of the rear side of the frame form a revolute pair, the lower end of the slot frame adjusts the pitching inclination angle of the seat through an adjusting mechanism consisting of a wedge block, a nut and an ejector rod, so that the seat can bring comfortable riding experience for infants with different preferences, and the modular quick-insertion structure consisting of the slot frame, the button, the hook spring, the set screw and the hook can realize the high-efficiency and quick connection and separation of the seat and the frame mechanism.

Preferably, the two sides of the frame are provided with mesh barriers with good ventilation effect, the front end of the frame is provided with a transverse handrail and an upright baffle for protecting the safety of infants, the bottom side of the frame is longitudinally provided with two rectangular square holes with round corners, a nylon woven belt is longitudinally arranged in the middle of the rectangular square hole at the front end of the frame and used for protecting the infants from falling injury in the process of learning and walking, the two connecting plates, the turning plate and the frame form a revolute pair, the turning plate and the frame form a rotary connection, two guide rods are arranged inside the rear end of the frame, two guide holes arranged on the rear side of the backrest are matched and installed with the two guide rods, the backrest can slide up and down relative to the frame, and the shape and the size of a seat plate arranged at the bottom end of the backrest are the same as those of.

In the initial state, the turning plate is turned forwards to cover the rectangular square hole in the front end of the frame, and the backrest is at the lowest position to enable the seat plate to cover the rectangular square hole in the rear end of the frame, so that the bottom of the seat forms a flat plane for the infant to lie down and play.

Preferably, the rear side of the frame is provided with a mandril base, the upper end of the left side of the slot frame and the upper end of the rear side of the frame form a revolute pair, the upper end of the right side of the slot frame is provided with a rectangular groove, the upper end of the rectangular groove is provided with two rectangular jacks, the lower end of the slot frame is internally provided with a hook cavity and a transverse button hole, the hook is arranged in the hook cavity, the hook can slide up and down in the hook cavity, the upper end of the hook is provided with an inclined plane structure, the middle position of the hook is provided with a rectangular opening, the lower side of the button is provided with an inclined plane, the button penetrates through the rectangular opening in the middle of the hook and is installed in the button hole of the slot frame, the lower end of the slot frame is provided with two threaded holes communicated with the hook cavity, the two set screws are installed in the two threaded holes respectively, the two hook springs are arranged between the two set screws and the hook respectively, the left end of the ejector rod and the ejector rod seat form a revolute pair, and the threaded structure of the right end, the two wedge blocks.

In an initial state, under the action of the elastic force of a hook spring, the hook is positioned at the upper end of the hook cavity, the inclined plane structure at the upper end of the hook extends into the rectangular groove at the upper end of the right side of the slot frame, and the inclined plane at the lower side of the button is pressed leftwards to push the hook to move downwards so that the inclined plane structure at the upper end of the hook retracts into the hook cavity; after the press of the button is released, the hook returns to the initial position under the action of the elastic force of the hook spring.

The set screw and the slot framework are connected in a thread pair mode, the compression amount of the hook spring can be changed by adjusting the position of the set screw, and therefore the button pressing and resilience force can be adjusted.

The adjustment of the pitch angle of the seat can be realized by adjusting the positions of the two nuts on the mandril: the two nuts move leftwards on the ejector rod, then the front end of the seat inclines downwards, and the two nuts move rightwards on the ejector rod, then the front end of the seat inclines upwards.

The invention has the beneficial effects that:

the seat and the frame can be quickly and stably connected through the modularized connecting mechanism, so that the assembly efficiency is improved, other seats adopting the same connecting module can be quickly and conveniently replaced according to actual needs, and the interchangeability of the baby carriage is improved.

Secondly, the pitching inclination angle of the seat can be adjusted according to the preference of the infant, so that the sitting comfort of the seat is improved.

The seat is adjusted to a proper position, the turning plate is turned backwards for 180 degrees, the baby carriage can become a protective carriage for the baby to learn walking, and the parents control the moving speed and direction of the baby carriage through the armrest frame, so that the baby carriage has stronger autonomy, the baby carriage can be prevented from falling and being injured, and the baby carriage is far away from dangerous areas and environments.

Drawings

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

Figure 2 is a schematic view of the seat facing backwards.

Fig. 3 is a schematic view of protecting infants from learning to walk.

Fig. 4 is an exploded schematic view of the seat.

Fig. 5 is a schematic view showing a state after the seat plate is lifted.

Fig. 6 is a schematic view showing a state where the seat is lowered.

Fig. 7 is an exploded view of the frame mechanism.

Fig. 8 is a schematic view showing a functional locking state of the cradle.

Fig. 9 is a schematic view showing a functional opening state of the cradle.

Fig. 10 is a schematic view of the rotation-locked state of the first column.

Fig. 11 is a schematic view of the first column in a rotatable state.

Fig. 12 is a schematic view of the rotation-locked state of the third column.

Fig. 13 is a schematic view of the third column in a rotatable state.

Fig. 14 is an overall structural schematic diagram of the chassis mechanism.

Fig. 15 is an overall schematic view of the brake mechanism.

Fig. 16 is an exploded view of the braking mechanism.

Fig. 17 is a schematic view of a brake mechanism released state.

FIG. 18 is a schematic view of the brake mechanism locking the rotation of the left rear wheel.

Fig. 19 is a schematic structural view of the top hook.

Reference numerals: 1 seat, 101 frame, 101.1 lower catch wheel, 101.2 guide rod, 101.3 ratchet bar, 101.4 upper catch wheel, 101.5 ejector rod seat, 102 back, 102.1 seat plate, 103 turning plate, 104 connecting plate, 105 pressure spring screw, 106 ejector ball spring, 107 ejector ball, 108 spring plate, 109 ejector hook, 109.1 front top surface, 109.2 rear top surface, 110 locating rack, 111 slot rack, 112 button, 113 wedge block, 114 nut, 115 ejector rod, 116 hook spring, 117 set screw and 118 hook;

2, a frame mechanism, a 201 swing rod, a 201.1 inserting plate, a 202 top cover, a 203 first upright post, a 204 first sliding sleeve, a 205 first spring, a 206 second upright post, a 207 pneumatic rod switch, a 208 lower connecting rod, a 209 upper connecting rod, a 210 pneumatic rod, a 211 fixed upright post, a 212 second spring, a 213 second sliding sleeve, a 214 third upright post, a 215 locking wrench, a 216 cradle inserting rod, a 217 inserting rod spring, a 218 top swinging sleeve and a 219 tail swinging sleeve;

3 chassis mechanism, 301 bottom plate, 302 first elastic rod, 303 first upper link, 304 first lower link, 305 left rear leg rod, 305.1 brake frame, 306 left rear wheel, 306.1 left brake disc, 307 brake releasing plate, 308 brake plate, 309 right rear wheel, 310 right rear leg rod, 311 second lower link, 312 second upper link, 313 second elastic rod, 314 third elastic rod, 315 third upper link, 316 third lower link, 317 right front leg rod, 318 right front wheel, 319 fourth elastic rod, 320 fourth upper link, 321 fourth lower link, 322 left front leg rod, 323 left front wheel, 324 brake inserting rod, 325 brake spring, 326 sliding shaft, 327 sliding shaft spring, 328 brake sleeve, 329 brake lower link, 330 brake upper link, 331 rotation shaft;

4 handrail frame.

Detailed Description

The present invention will be further described with reference to specific examples, which are illustrative of the invention and are not to be construed as limiting the invention.

As shown in fig. 1, a multifunctional baby carriage comprises a seat 1, a frame mechanism 2, a chassis mechanism 3 and an armrest frame 4, and is characterized in that: the chair 1 can adjust the pitching inclination angle, can provide a comfortable sitting and lying space for infants, the interior of the chair can form a flat plane to facilitate the infants to lie and play, the seat plate for the infants can adjust the height to keep the infants at a comfortable sitting posture, the chair 1 can also be a protective vehicle for the infants when the infants learn to walk after being adjusted by the components in the chair, the upper end of the frame mechanism 2 and the rear end of the chair 1 can be connected and separated through a modularized quick-insertion structure, the frame mechanism 2 adopts a multi-connecting-rod structure, the adjustment of the height, the direction and the position of the chair 1 can be conveniently realized, the chair has great flexibility and convenience, meanwhile, the transverse cradle function of the chair 1 can also be realized according to the pendulum effect, the lower end of the frame mechanism 2 is fixedly connected with the chassis mechanism 3, the lower end of the armrest frame 4 is fixedly connected with the chassis mechanism 3, four wheels arranged under the chassis mechanism 3 are independently suspended, the damping performance and the passing performance of the chassis mechanism 3 are improved, a more comfortable riding environment is provided for infants, and parents can control the baby carriage more easily through the armrest frame 4.

As shown in fig. 1 and 4, the seat 1 includes a frame 101, a backrest 102, a flap 103, a link plate 104, a pressure spring screw 105, a ball spring 106, a ball 107, a spring plate 108, a hook 109, a front top surface 109.1, a rear top surface 109.2, a positioning frame 110, a slot frame 111, a button 112, a wedge 113, a nut 114, a push rod 115, a hook spring 116, a set screw 117, and a hook 118, the frame 101 is a main supporting structure of the seat 1, the flap 103 is rotatably connected with the frame 101 through the two link plates 104, the backrest 102 can slide down on the rear end of the frame 101, and the position adjustment and positioning of the backrest 102 are realized through a positioning mechanism composed of the pressure spring screw 105, the ball spring 106, the ball 107, the spring plate 108, the hook 109, and the positioning frame 110, so that infants with different sizes and heights can be adjusted to a comfortable sitting posture, when the backrest 102 is at the lowermost position, the flap 103 is turned forward to form a flat plane at the bottom of the seat 1, the infant sleeping and playing protection chair is characterized in that an infant can lie and play, the seat 1 can become a protection vehicle for the infant when the infant learns to walk by turning the turnover plate 103 backwards, a revolute pair is formed by the upper end of the slot frame 111 and the upper end of the rear side of the frame 101, the pitching inclination angle of the seat 1 is adjusted by the adjusting mechanism formed by the wedge-shaped block 113, the nut 114 and the ejector rod 115 at the lower end of the slot frame 111, so that the seat 1 can bring comfortable sitting experience for the infants with different preferences, and the modular quick-insertion structure formed by the slot frame 111, the button 112, the hook spring 116, the set screw 117 and the hook 118 can realize efficient and quick connection and separation of the seat 1 and the frame mechanism.

As shown in fig. 1 and 4, mesh enclosure with good ventilation effect is arranged on two sides of the frame 101, a transverse handrail and an upright baffle are arranged at the front end of the frame 101 for protecting the safety of infants, two rectangular square holes with round corners are longitudinally arranged on the bottom side of the frame 101, nylon woven tapes are longitudinally arranged in the middle of the rectangular square holes at the front end of the frame for protecting the infants from falling injuries in the process of learning and walking, two connecting plates 104, a turning plate 103 and the frame 101 form a revolute pair, so that the turning plate 103 and the frame 101 form a rotary connection, two guide rods 101.2 are arranged in the rear end of the frame 101, two guide holes arranged on the rear side of the backrest 102 are matched with the two guide rods 101.2, the backrest 102 can slide up and down relative to the frame 101, and the shape and size of a seat plate 102.1 arranged at the bottom end of the backrest 102 are the same as the rectangular square holes at.

In the initial state, the flap 103 is turned forward to cover the rectangular square hole at the front end of the frame 101, and the backrest 102 is at the lowest position to make the seat plate 102.1 cover the rectangular square hole at the rear end of the frame 101, so that the bottom of the seat 1 forms a flat plane for the infant to lie down and play.

As shown in fig. 4 and 5, a top rod seat 101.5 is arranged at the rear side of the frame 101, a revolute pair is formed by the upper end of the left side of the slot frame 111 and the upper end of the rear side of the frame 101, a rectangular groove is arranged at the upper end of the right side of the slot frame 111, two rectangular insertion holes are arranged at the upper end of the rectangular groove, a hook cavity and a transverse button hole are arranged in the lower end of the slot frame 111, a hook 118 is arranged in the hook cavity and can slide up and down in the hook cavity, an inclined plane structure is arranged at the upper end of the hook 118, a rectangular opening is arranged at the middle position, an inclined plane is arranged at the lower side of the button 112, the button 112 passes through the rectangular opening at the middle of the hook 118 and is arranged in the button hole of the slot frame 111, two threaded holes communicated with the hook cavity are arranged at the lower end of the slot frame 111, two fastening screws 117 are respectively arranged, the threaded structure at the right end together with the two wedge blocks 113 and the two nuts 114 clamps the lower end of the slot housing 111.

As shown in fig. 6, in an initial state, under the action of the elastic force of the hook spring 116, the hook 118 is located at the upper end of the hook cavity, the inclined surface structure at the upper end of the hook 118 extends into the rectangular groove at the upper end of the right side of the slot frame 111, and the button 112 is pressed leftward, and the inclined surface at the lower side thereof pushes the hook 118 to move downward, so that the inclined surface structure at the upper end of the hook 118 retracts into the hook cavity; after releasing the pressing of the button 112, the hook 118 is restored to the original position by the elastic force of the hook spring 116.

The set screw 117 and the slot frame 111 form a thread pair connection, and the compression amount of the hook spring 116 can be changed by adjusting the position of the set screw 117, so that the pressing and rebounding force of the button 112 can be adjusted.

Adjustment of the pitch angle of seat 1 can be achieved by adjusting the position of two nuts 114 on bar 115: two nuts 114 move leftward on the carrier bar 115 so that the front end of the seat 1 is inclined downward, and two nuts 114 move rightward on the carrier bar 115 so that the front end of the seat 1 is inclined upward.

As shown in fig. 4, 5, 6 and 19, a cavity structure is arranged at the rear end of a frame 101, a rotatable lower catch wheel 101.1 is arranged at the lower end of the front side of the cavity structure, a ratchet bar 101.3 is longitudinally arranged at the rear side of the cavity structure, a rotatable upper catch wheel 101.4 is arranged at the upper end of the ratchet bar 101.3, a positioning frame 110 is fixedly connected with a backrest 102 through a screw, a front top surface 109.1 is arranged at the front side of a top hook 109, a rear top surface 109.2 is arranged at the lower end of the rear side, the top hook 109 is arranged in the positioning frame 110 and forms a revolute pair, two spring pieces 108 are arranged between the positioning frame 110 and the top hook 109, the top hook 109 has a tendency of counterclockwise rotation under the elastic force of the spring pieces 108, a threaded hole is arranged at the top end of the positioning frame 110, a top ball 107 is arranged at the lower end of the threaded hole and extends downwards, a pressure spring 105 is, the compression amount of the ball ejecting spring 106 can be changed by adjusting the position of the pressure spring screw 105 in the threaded hole, so that the resilience of the ball ejecting spring 107 is adjusted, and the lower end of the ejecting hook 109 can be meshed with the teeth of the ratchet bar 101.3, so that the height position of the backrest 102 is positioned.

As shown in fig. 5, in the initial state, under the elastic force of the spring plate 108, the top end of the top hook 109 is located at the left side of the top bead 107; when the height of the seat plate 102.1 needs to be adjusted, the backrest 102 is pulled upwards, the lower end of the top hook 109 can bounce from bottom to top between the teeth of the ratchet bar 101.3, the upper end of the top hook 109 is always positioned in the left area of the top bead 107 in the process, the backrest 102 stops being pulled upwards after the seat plate 102.1 moves to a proper height position, the lower end of the top hook 109 is clamped between the teeth of the corresponding ratchet bar 101.3 and cannot move downwards, and therefore the height adjustment and the positioning of the seat plate 102.1 are completed.

When it is desired to lower the height of the seat plate 102.1, as shown in fig. 6, the backrest 102 is pulled upwardly to the uppermost position, during this process the front top surface 109.1 of the top hook 109 will move upwards and contact the upper catch wheel 101.4, under the push of the upper catch wheel 101.4, the top hook 109 will rotate clockwise, so that its upper end compresses and goes over the top bead 107, to the right section of the top bead 107, the upper end of the top hook 109 can not spontaneously cross the top bead 107 to reach the left region under the blocking action of the top bead 107, at the moment, the lower end of the top hook 109 is disengaged from the ratchet bar 101.3, so that the seat plate 102.1 can smoothly slide downwards, when the seat plate 102.1 slides to the lowest end position, the lower catch wheel 101.1 will push against the rear top surface 109.2 of the top hook 109, under the thrust of the lower catch wheel 101.1, the top hook 109 will rotate counterclockwise, the upper end of the spring compresses and passes over the top bead 107 to the left region, so that the initial state is restored and the seat plate 102.1 can be adjusted to the proper height.

As shown in fig. 1 and 2, the frame mechanism 2 includes a swing link 201, a top cover 202, a first upright 203, a first sliding sleeve 204, a first spring 205, a second upright 206, a pneumatic rod switch 207, a lower link 208, an upper link 209, a pneumatic rod 210, a fixed upright 211, a second spring 212, a second sliding sleeve 213, a third upright 214, a locking wrench 215, a cradle insert rod 216, an insert rod spring 217, a top swing sleeve 218 and a tail swing sleeve 219, the frame mechanism 2 can be modularly connected with the seat 1 through the swing link 201 and can enable the seat 1 to realize a transverse cradle function based on a pendulum effect, the locking wrench 215 at the top end position of the first upright 203 can realize locking of the cradle function of the seat 1 through the cradle insert rod 216, the first upright 203 can rotate relative to the second upright 206 and can be locked at the rotation position by the first sliding sleeve 204, the lower link 208 and the upper link 209 are installed between the second upright 206 and the third upright 214, the fourth one forms a parallelogram structure, the air pressure rod 210 is installed between the lower link 208 and the upper link 209 through a top swing sleeve 218 and a tail swing sleeve 219 for adjusting the height of the second upright 206, the lower end of the fixed upright 211 is fixedly connected with the chassis mechanism 3, the third upright 214 can rotate relative to the fixed upright 211, and the rotation position is locked by the second sliding sleeve 213.

As shown in fig. 1, 2, and 7, the left end of the swing rod 201 is a rectangular plate structure having the same size as the rectangular groove at the upper end of the right side of the slot frame 111, two insertion plates 201.1 are disposed at the upper end of the rectangular plate structure, the right end of the swing rod 201 is a circular shaft structure, a circular hole is vertically disposed on the circular shaft structure, the circular shaft structure and the upper end of the first upright 203 form a revolute pair through a bearing, a stepped circular hole is vertically disposed at the upper end of the first upright 203, a cradle insertion rod 216 is coaxially mounted in the stepped circular hole and forms a sliding pair, an insertion rod spring 217 is mounted between the upper end of the first upright 203 and the cradle insertion rod 216, a revolute pair is formed between the lower end of the locking wrench 215 and the upper end of the cradle.

The left end rectangular plate structure of the swing rod 201 can be embedded into the rectangular groove of the slot frame 111, two slots 201.1 at the upper end of the rectangular plate structure are inserted into two rectangular insertion holes at the upper end of the rectangular groove of the slot frame 111, and the hook 118 can hook the lower edge of the rectangular plate structure, so that the modular connection of the seat 1 and the frame mechanism 2 is realized; pressing the button 112 retracts the hook 118, thereby releasing the connection between the seat 1 and the frame mechanism 2.

As shown in fig. 8 and 9, in an initial state, the locking wrench 215 is in a vertical state, the cradle insert bar 216 is inserted downward into the circular hole at the upper side of the circular shaft structure at the right end of the swing rod 201 by the elastic force of the insert bar spring 217, so as to lock the cradle function of the seat 1, and after the locking wrench 215 is pulled rightward to a horizontal state, the cradle insert bar 216 moves upward and is separated from and held in the circular hole at the upper side of the circular shaft structure at the right end of the swing rod 201, so that the seat 1 can restore the cradle function.

As shown in fig. 7 and 10, the lower end of the first upright 203 is provided with an external spline, the upper end of the second upright 206 forms a revolute pair with the lower end of the first upright 203 through two deep groove ball bearings and a thrust ball bearing, the position of the second upright 206 near the upper end is provided with an external spline, the upper end and the lower end inside the first sliding sleeve 204 are both provided with internal splines, the internal splines at the lower end of the first sliding sleeve cooperate with the external splines on the second upright 206 to form a sliding pair, so that the first sliding sleeve 204 can slide on the second upright 206 but cannot rotate, the internal splines at the upper end inside the first sliding sleeve 204 can cooperate with the external splines at the lower end of the first upright 203, and a first spring 205 is arranged between the lower end of the first sliding sleeve.

As shown in fig. 10 and 11, in an initial state, the internal spline at the upper end of the first sliding sleeve 204 is always engaged with the external spline at the lower end of the first upright 203 under the action of the elastic force of the first spring 205, so that the rotation of the first upright 203 relative to the second upright 206 is locked; when the first upright 203 needs to be rotated, the first sliding sleeve 204 can be pressed downwards, so that the inner spline at the upper end of the first sliding sleeve is separated from the matching with the outer spline at the lower end of the first upright 203, the first upright 203 can be rotated to a proper angle, then the pressing of the first sliding sleeve 204 is released, so that the inner spline at the upper end of the first sliding sleeve is matched with the outer spline at the lower end of the first upright 203, and the position of the first upright 203 is locked.

As shown in fig. 7 and 12, the lower end of the third upright 214 is provided with an external spline, the upper end of the fixed upright 211 forms a revolute pair with the lower end of the third upright 214 through two deep groove ball bearings and a thrust ball bearing, the position of the fixed upright 211 near the upper end is provided with an external spline, the upper end and the lower end inside the second sliding sleeve 213 are both provided with internal splines, the internal spline at the lower end of the second sliding sleeve 213 is matched with the external spline on the fixed upright 211 to form a sliding pair, so that the second sliding sleeve 213 can slide on the fixed upright 211 but cannot rotate, the internal spline at the upper end inside the second sliding sleeve 213 can be matched with the external spline at the lower end of the third upright 214, and a second spring 212 is arranged between.

As shown in fig. 12 and 13, in the initial state, the internal spline at the upper end of the second sliding sleeve 213 is always engaged with the external spline at the lower end of the third upright column 214 under the action of the elastic force of the second spring 212, so as to lock the rotation of the third upright column 214 relative to the fixed upright column 211; when the third upright 214 needs to be rotated, the second sliding sleeve 213 can be pressed downwards, so that the internal spline at the upper end of the second sliding sleeve is separated from the matching with the external spline at the lower end of the third upright 214, the third upright 214 can be rotated to a proper angle, then the pressing on the second sliding sleeve 213 is released, so that the internal spline at the upper end of the second sliding sleeve is matched with the external spline at the lower end of the third upright 214, and the position of the third upright 214 is locked.

As shown in fig. 2, after the second sliding sleeve 213 is pressed downward and the third upright 214 is rotated 180 °, the pressing of the second sliding sleeve 213 is released, so as to lock the position of the third upright 214, so that the seat 1 can be changed from a forward direction to a backward direction, and the infant can be changed from a state of facing away from the parent to a state of facing the parent.

As shown in fig. 1 and 7, the left ends of the upper link 209 and the lower link 208 and the third upright 214 form a revolute pair, the right ends of the upper link 209 and the second upright 206 form a revolute pair, the upper link 209 is installed on the upper side of the lower link 208, the upper link 209, the lower link 208, the second upright 206 and the third upright 214 form a parallelogram structure, the upper end of the air pressure rod 210 and the upper link 209 form a revolute pair through the top swing sleeve 218, the lower end of the air pressure rod 210 and the lower link 208 form a revolute pair through the tail swing sleeve 219, the air pressure rod switch 207 is installed at the top end of the air pressure rod 210 and forms a revolute pair with the upper link 209, and when the seat 1 is in an unloaded state, the air pressure rod switch 207 is pulled downwards to extend the air pressure rod 210 to raise the position of the second upright 206; in the state of pulling the air pressure bar switch 207 downwards, the seat 1 is pressed downwards, the air pressure bar 210 is contracted, the seat 1 is lowered, the length of the air pressure bar 210 can be locked by releasing the air pressure bar switch 207, and the height position of the seat 1 can be locked.

As shown in fig. 3, when the infant learns to walk, the second sliding sleeve 213 is pressed downward and the third upright post 214 is rotated 180 °, the pressing on the second sliding sleeve 213 is released to lock the position of the third upright post 214, the first sliding sleeve 204 is pressed downward and the first upright post 203 is rotated 180 °, the pressing on the first sliding sleeve 204 is released to lock the position of the first upright post 203, the air pressure bar switch 207 is pulled downward and the seat 1 is pressed downward to a proper height, the air pressure bar switch 207 is released to lock the height of the seat 1, the turning plate 103 is turned over 180 ° backward, the rectangular square hole and the nylon cloth strap under the turning plate are exposed, the infant is placed in the rectangular square hole and the legs of the infant are placed on the two sides of the nylon cloth strap and the feet of the infant are placed on the ground, the parent can control the moving speed and direction of the stroller through the armrest frame 4, not only enables the infant to have strong autonomy, but also prevents the infant from falling, and can keep the infant away from hazardous areas and environments.

As shown in fig. 14, the chassis mechanism 3 includes a base plate 301, a first elastic rod 302, a first upper link 303, a first lower link 304, a left rear leg 305, a left rear wheel 306, a right rear wheel 309, a right rear leg 310, a second lower link 311, a second upper link 312, a second elastic rod 313, a third elastic rod 314, a third upper link 315, a third lower link 316, a right front leg 317, a right front wheel 318, a fourth elastic rod 319, a fourth upper link 320, a fourth lower link 321, a left front leg 322, a left front wheel 323, and a brake mechanism, the base plate 301 is a support main body of the chassis mechanism 3, the left front wheel 323 is a universal wheel structure and is independently suspended by the left front leg 322, the fourth lower link 321, the fourth upper link 320, the fourth elastic rod 319, the right front wheel is a universal wheel structure and is independently suspended by the right front leg 317, the third lower link 316, the third upper link 315, the third elastic rod 314, the left rear wheel 306 has a brake mechanism, the left rear leg rod 305, the first lower connecting rod 304, the first upper connecting rod 303 and the first elastic rod 302 form independent suspension, the right rear wheel 309 is provided with a brake mechanism, the right rear leg rod 310, the second lower connecting rod 311, the second upper connecting rod 312 and the second elastic rod 313 form independent suspension, and the four-wheel independent suspension improves the damping performance and the passing performance of the chassis mechanism 3, provides a more comfortable riding environment for infants and enables parents to more easily realize the control of the baby carriage.

As shown in fig. 14, the front end of the left front leg rod 322 and the upper end of the left front wheel 323 form a rotation pair, the rear end of the left front leg rod and the left side of the front end of the bottom plate 301 form a rotation pair, the rear end of the fourth upper connecting rod 320 and the left side of the front end of the bottom plate 301 form a rotation pair, the upper end of the fourth lower connecting rod 321 and the front end of the fourth upper connecting rod 320 form a rotation pair, the lower end of the fourth lower connecting rod and the left front leg rod 322 form a rotation pair, the fourth elastic rod 319 is internally provided with a spring, the rear end of the fourth elastic rod and the upper side of the bottom plate 301 form a rotation pair; the front end of the right front leg bar 317 and the upper end of the right front wheel 318 form a revolute pair, the rear end of the right front leg bar 317 and the right side of the front end of the bottom plate 301 form a revolute pair, the rear end of the third upper link 315 and the right side of the front end of the bottom plate 301 form a revolute pair, the upper end of the third lower link 316 and the front end of the third upper link 315 form a revolute pair, the lower end of the third lower link 316 and the right front leg bar 317 form a revolute pair, the rear end of the third elastic bar 314 is provided with a spring, the rear end of the third elastic bar and the upper side of the bottom plate 301.

The front end of the left rear leg rod 305 and the left side of the rear end of the bottom plate 301 form a revolute pair, the upper side of the rear end of the left rear leg rod 305 is provided with a brake frame 305.1, the lower side of the brake frame 305.1 is provided with a set of brake mechanism, the lower side of the rear end of the left rear leg rod 305 and the left rear wheel 306 form a revolute pair, the right side of the left rear wheel 306 is provided with a left brake disc 306.1, eighteen jacks are uniformly arranged on the left brake disc 306.1 in the circumferential direction, the brake mechanism can lock the left brake disc 306.1 so as to lock the rotation of the left rear wheel 306, the front end of the first upper connecting rod 303 and the left side of the rear end of the bottom plate 301 form a revolute pair, the upper end of the first lower connecting rod 304 and the rear end of the first upper connecting rod 303 form a revolute pair, the lower end of the first elastic rod 305 and the upper side of the; the front end of the right rear leg rod 310 and the right side of the rear end of the bottom plate 301 form a revolute pair, the upper side of the rear end of the right rear leg rod 310 is provided with a brake frame, the lower side of the rear end of the right rear leg rod 310 and the right rear wheel 309 form a revolute pair, the left side of the right rear wheel 309 is provided with a right brake disc, eighteen insertion holes are uniformly formed in the circumferential direction of the right brake disc, the brake mechanism can lock the right brake disc so as to lock the rotation of the right rear wheel 309, the front end of the second upper connecting rod 312 and the right side of the rear end of the bottom plate 301 form a revolute pair, the upper end of the second lower connecting rod 311 and the rear end of the second upper connecting rod 312 form a revolute pair, a spring is arranged in the second elastic rod 313, the front end of the second elastic rod and the upper.

As shown in fig. 15 and 16, the brake mechanism includes a brake releasing plate 307, a brake plate 308, a brake inserting rod 324, a brake spring 325, a sliding shaft 326, a sliding shaft spring 327, a brake shaft sleeve 328, a brake lower connecting rod 329, a brake upper connecting rod 330, and a rotating shaft 331, wherein the upper end of the brake shaft sleeve 328 is tightly connected with the brake frame 305.1, the sliding shaft 326 is coaxially installed inside the brake shaft sleeve 328 and forms a sliding pair, the sliding shaft spring 327 is installed between the two, the brake inserting rod 324 is coaxially installed at the lower end of the sliding shaft 326 and forms a sliding pair, the brake spring 325 is installed between the two, the left end of the brake releasing plate 307 is of a pedal structure, the upper end of the right end of the brake releasing plate forms a rotating pair with the brake shaft sleeve 328, the lower end of the right end of the brake lower connecting rod 329 forms a rotating pair with the left end of the brake lower connecting rod 329, the left end of the brake plate 308 is of a, the lower end of the brake lower connecting rod 329, the right end of the brake plate 308 form a coaxial rotating pair through a rotating shaft 331.

As shown in fig. 17, in the initial state, the brake mechanism is in the released state, the slide shaft 326 is located at the uppermost position inside the brake sleeve 328 under the elastic force of the slide shaft spring 327, the brake inserting rod 324 is located at the lowermost position of the slide shaft 326 under the elastic force of the brake spring 325, and the brake inserting rod 324 is not in contact with the left brake disc 306.1, so that the left end of the brake plate 308 is located at the upper position and the left end of the brake release plate 307 is located at the lower position.

As shown in fig. 18, when the left rear wheel 306 needs to be braked, the left end of the brake plate 308 is stepped downwards, the sliding shaft 326 moves downwards until the rotating shaft 331 contacts and abuts against the outer side surface of the brake sleeve 328, in the process, the brake inserting rod 324 is inserted into the inserting hole on the left brake disc 306.1, the left end of the brake releasing plate 307 moves to the upper position, and the brake process of the left rear wheel 306 is completed by releasing the brake plate 308 in the lower position.

When the brake of the left rear wheel 306 needs to be released, the left end of the brake releasing plate 307 is stepped downwards, the rotating shaft 331 is pushed away from the brake shaft sleeve 328 through the brake lower connecting rod 329, the sliding shaft 326 is pushed to the uppermost position under the action of the elastic force of the sliding shaft spring 327, the brake inserting rod 324 is pulled away from the inserting hole of the left brake disc 306.1, the brake plate 308 moves from the low position to the high position, the brake releasing plate 307 moves to the low position, and the action of releasing the brake of the left rear wheel 306 is completed.

The braking and brake release principles of the right rear wheel 309 are the same as the left rear wheel 306.

The references to "front", "back", "left", "right", etc., are to be construed as references to orientations or positional relationships based on the orientation or positional relationship shown in the drawings or as orientations and positional relationships conventionally found in use of the product of the present invention, and are intended to facilitate the description of the invention and to simplify the description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Claims (3)

1. The utility model provides a seat of perambulator, hereinafter calls seat (1), includes frame (101), back (102), turns over board (103), link board (104), slot frame (111), button (112), wedge (113), nut (114), ejector pin (115), couple spring (116), holding screw (117), couple (118), its characterized in that: the frame (101) is a main body supporting structure of the seat (1), the turning plate (103) is rotatably connected with the frame (101) through two connecting plates (104), the backrest (102) can slide up and down and be positioned at the rear end of the frame (101) so that infants with different body sizes and heights can be adjusted to comfortable sitting postures, when the backrest (102) is at the lowest end position, the turning plate (103) is turned forwards so that the bottom of the seat (1) forms a flat plane for the infants to lie and play, the turning plate (103) is turned backwards so that the seat (1) becomes a protective vehicle for the infants to learn to walk, the upper end of the slot frame (111) and the upper end of the rear side of the frame (101) form a rotating pair, the lower end of the slot frame (111) adjusts the pitching angle of the seat (1) through an adjusting mechanism formed by a wedge block (113), a nut (114) and a mandril (115), so that the seat (1) can bring comfortable sitting experience of the infants with different preferences, the modular quick-insertion structure consisting of the slot frame (111), the button (112), the hook spring (116), the set screw (117) and the hook (118) can realize the efficient and quick connection and separation of the seat (1) and the frame mechanism (2).

2. A stroller seat according to claim 1, characterized in that: the two sides of the frame (101) are provided with mesh barriers with good ventilation effect, the front end of the frame is provided with a transverse handrail and a vertical baffle for protecting the safety of infants, the bottom side of the frame (101) is longitudinally provided with two rectangular square holes with round corners, wherein the middle position of the rectangular square hole at the front end is longitudinally provided with a nylon cloth belt for protecting infants from falling injury in the process of learning and walking, the two connecting plates (104) form a revolute pair with the turning plate (103) and the frame (101), thereby the turning plate (103) and the frame (101) form a rotary connection, two guide rods (101.2) are arranged in the rear end of the frame (101), two guide holes arranged at the rear side of the backrest (102) are matched and installed with the two guide rods (101.2), the backrest (102) can slide up and down relative to the frame (101), and the shape and the size of a seat plate (102.1) arranged at the bottom end of the backrest (102) are the same as those of a rectangular square hole at the rear end of the bottom side of the frame (101);

in an initial state, the turning plate (103) is turned forwards to cover the rectangular square hole at the front end of the frame (101), and the backrest (102) is at the lowest position to enable the seat plate (102.1) to cover the rectangular square hole at the rear end of the frame (101), so that the bottom of the seat (1) forms a flat plane for an infant to lie down and play.

3. A stroller seat according to claim 1, characterized in that: the rear side of the frame (101) is provided with a mandril base (101.5), the upper end of the left side of the slot frame (111) and the upper end of the rear side of the frame (101) form a revolute pair, the upper end of the right side of the slot frame (111) is provided with a rectangular groove, the upper end of the rectangular groove is provided with two rectangular jacks, the lower end of the slot frame (111) is internally provided with a hook cavity and a transverse button hole, a hook (118) is arranged in the hook cavity and can slide up and down in the hook cavity, the upper end of the hook (118) is provided with an inclined plane structure, the middle position is provided with a rectangular open hole, the lower side of the button (112) is provided with an inclined plane, the button (112) passes through the rectangular open hole in the middle of the hook (118) and is arranged in the button hole of the slot frame (111), the lower end of the slot frame (111) is provided with two threaded holes communicated with the hook cavity, the two set screws (117, the left end of the ejector rod (115) and the ejector rod seat (101.5) form a rotating pair, and the threaded structure at the right end, the two wedge-shaped blocks (113) and the two nuts (114) clamp the lower end of the slot frame (111) together;

in an initial state, under the action of the elastic force of a hook spring (116), a hook (118) is positioned at the upper end of a hook cavity, an inclined plane structure at the upper end of the hook (118) extends into a rectangular groove at the upper end of the right side of a slot frame (111), and an inclined plane at the lower side of a button (112) is pressed leftwards to push the hook (118) to move downwards, so that the inclined plane structure at the upper end of the hook (118) retracts into the hook cavity; after the press of the button (112) is released, the hook (118) is restored to the initial position under the action of the elastic force of the hook spring (116);

the set screw (117) and the slot frame (111) form a thread pair connection, and the compression amount of the hook spring (116) can be changed by adjusting the position of the set screw (117), so that the pressing and rebounding force of the button (112) can be adjusted;

the adjustment of the pitch angle of the seat (1) can be realized by adjusting the positions of the two nuts (114) on the mandril (115): the two nuts (114) move leftwards on the ejector rod (115) so that the front end of the seat (1) inclines downwards, and the two nuts (114) move rightwards on the ejector rod (115) so that the front end of the seat (1) inclines upwards.

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