Baby stroller convenient to brake

Abstract

The utility model discloses a baby stroller convenient to brake, which comprises a rear leg, a front leg and a handlebar, the rear leg, the front leg and the handlebar are pivoted, and the handlebar can be reversed between a backward position and a forward position. The lower sides of the front feet and the rear feet are respectively connected with a front wheel set and a rear wheel set which can rotate horizontally, brake mechanisms are arranged on the front wheel set and the rear wheel set, and brake driving devices are arranged on the front feet and the rear feet; when the handlebar rotates to the backward position, the rear wheel set is located at a first angle position and is oriented; at the moment, the brake mechanism on the rear wheel set is in a state of being matched with the brake driving device on the rear foot, and the brake driving device on the rear foot can be driven to brake; when the handlebar rotates to the forward position, the front wheel set is located at the second angle position relative to the front foot and is oriented, and at the moment, the brake mechanism on the front wheel set is in the state of being capable of being matched with the brake driving device on the front wheel to drive the brake driving device on the front foot to brake; therefore, the brake operation is very convenient.

Description

Technical Field

[0001] The utility model relates to the field of infant products, in particular to a child stroller with convenient braking. Background Art

[0002] A stroller can be used to carry infants and young children. The infants and young children sit on the seats of the stroller, and the parents push the stroller forward, thereby reducing the hardship of the parents in holding the children. Therefore, strollers are widely used in families with children.

[0003] In order to make it more convenient to look after children, the handlebars of some child strollers are arranged to be able to rotate back and forth between a forward position and a rearward position. When the handlebars rotate from the forward position, the child in the child stroller faces the parents; when the handlebars rotate to the rearward position, the child in the child stroller faces forward like the parents. This arrangement makes it more convenient for parents to look after their children.

[0004] In order to meet the needs of use, general child strollers are equipped with corresponding brake devices on the front feet or the rear feet. However, general child strollers only have the brake device on one of the front feet and the rear feet. When braking, the brake can only be applied to the side where the brake device is provided, and the wheel seat on the lower side of the front foot or the rear foot where the brake device is provided must be rotated to a brakeable position first, so the braking operation is inconvenient. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a child stroller with convenient braking. The front and rear parts are both provided with brake mechanisms and brake unlocking devices. Moreover, no matter whether the rider is in the forward position or the rearward position, the brake mechanism located at the side of the operator is just in a matching state with the corresponding brake driving device, so that the brakes can be applied only by operating the brake driving device, and no additional operation is required to rotate the front wheel group / rear wheel group to a just matching state, thereby making the braking operation particularly convenient.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A child stroller with convenient braking, comprising a rear foot, a rider, and a front foot pivotally connected to the rear foot at the rear side, wherein the lower side of the rider is pivotally connected to the rear foot or / and the front foot, and the rider is arranged to be rotatable and switchable between a rearward position and a forward position; the lower sides of the front foot and the rear foot are respectively connected to a horizontally rotatable front wheel group and a rear wheel group, and when the rider rotates to the rearward position, the rear wheel group is linked to be converted to a directional state, and the rear wheel group is at a first angle position relative to the rear foot; when the rider rotates to the forward position, the front wheel group is linked to be converted to a directional state, and the front wheel group is at a second angle position relative to the front foot. ; The front wheel group and the rear wheel group are both provided with brake mechanisms, and the front foot and the rear foot are both provided with brake driving devices; when the rear wheel group is at a first angle position relative to the rear foot, the brake mechanism on the rear wheel group is in a state that can cooperate with the brake driving device on the rear foot, and driving the brake driving device on the rear foot can put the brake mechanism on the rear wheel group into a braking state; when the front wheel group is at a second angle position relative to the front foot, the brake mechanism on the front wheel group is in a state that can cooperate with the brake driving device on the front wheel, and driving the brake driving device on the front foot can put the brake mechanism into a braking state.

[0008] Because the utility model adopts the above technical solution, it has the following beneficial effects:

[0009] 1. Braking mechanisms and brake unlocking devices are provided at the front and rear, and no matter the rider is in the forward or rearward position, the braking mechanism at the side of the rider is in a matching state with the corresponding brake drive device, so that the brake can be applied by operating the brake drive device only, without the need for additional operation to rotate the front wheel group / rear wheel group to a matching state; thus, the braking operation is particularly convenient;

[0010] 2. Regardless of whether the rider is in the forward or rearward position, when the parents push the stroller forward through the rider, the front wheels in the forward direction of the stroller can rotate horizontally, while the rear wheels cannot rotate horizontally. Therefore, when the stroller is moving forward, if there is a slight obstruction on the road, the front wheels can rotate horizontally to avoid it, while the rear wheels maintain the original direction of travel, making the stroller move more smoothly and safely. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a three-dimensional diagram of the child stroller in the unfolded state when the rider is in the rearward position. Figure 1 ;

[0012] Figure 2 The utility model is a three-dimensional diagram of the child stroller in the unfolded state when the rider is in the rearward position. Figure 2 ;

[0013] Figure 3It is a plan view of the utility model baby stroller in an unfolded state when the rider is in a forward position;

[0014] Figure 4 It is an exploded and enlarged schematic diagram of some functional components of the child stroller of the utility model when the rider is in the rearward position;

[0015] Figure 5 It is an enlarged schematic diagram of the rear wheel assembly and rear wheel directional member of the child stroller of the present invention;

[0016] Figure 6 Based on Figure 1 Enlarged schematic diagram of the cross section in the CC direction;

[0017] Figure 7 Based on Figure 1 A magnified diagram of the explosion of part A;

[0018] Figure 8 Based on Figure 7 An exploded and enlarged schematic diagram of some components in the middle;

[0019] Fig. 9 It is an exploded and enlarged schematic diagram of the matching member and the second brake transmission member;

[0020] Fig.10 It is an enlarged stereoscopic schematic diagram of the rear foot portion when viewed from above;

[0021] Fig.11 Based on Figure 1 A schematic diagram of the cross section enlarged along the BB direction;

[0022] Fig.12 Based on Fig.11 A magnified schematic diagram of the middle H section;

[0023] Fig.13 Based on Fig.11 Enlarged schematic diagram of part I.

[0024] Fig.14 It is an exploded and enlarged schematic diagram of the front foot part, the front wheel seat and the brake mechanism;

[0025] Fig.15 Based on Figure 2 A schematic diagram of the cross section enlarged in the FF direction;

[0026] Fig.16 For the rearward position of the driver, Figure 4 A schematic diagram of the enlarged plane of the G portion;

[0027] Fig.17 It is an enlarged schematic diagram of the actuating member, the front wheel driving member and the rear wheel driving member at another angle when the driver is in the rearward position;

[0028] Fig.18 It is another enlarged schematic diagram of the actuating member, the front wheel driving member and the rear wheel driving member at another angle when the rider is in the rearward position;

[0029] Fig.19 For the driver in the forward position Figure 4 A schematic diagram of the enlarged plane of the G portion;

[0030] Fig. 20 It is an enlarged schematic diagram of the actuating member, the front wheel driving member and the rear wheel driving member at another angle when the driver is in the rearward position;

[0031] Fig.21 When the stroller is folded, Figure 4 A schematic diagram of the enlarged plane of the G portion;

[0032] Fig. 22 It is an enlarged schematic diagram of the actuating member, the front wheel actuating member and the rear wheel actuating member at another angle when the stroller is folded;

[0033] Fig.23 Based on Figure 1 A schematic diagram of the cross section enlarged in the EE direction;

[0034] Fig.24 Based on Figure 1 The exploded enlarged schematic diagram of the D part in the middle;

[0035] Fig.25 is an enlarged schematic diagram of a second driving member;

[0036] Fig.26 It is an enlarged schematic diagram of the working parts;

[0037] Fig. 27 Based on Figure 1 Another exploded and enlarged diagram of the D part in the middle;

[0038] Fig.28 It is a three-dimensional schematic diagram of another embodiment of the utility model. DETAILED DESCRIPTION

[0039] like Figures 1 to 15As shown, the utility model discloses a child stroller with convenient braking, which can be switched between an unfolded state and a folded state. The child stroller comprises a rear foot 1, a rider 2, and a front foot 3 pivotally connected to the rear foot 1 at the rear side. The lower side of the rider 2 is pivotally connected to the rear foot 1 or / and the front foot 3, and the rider 2 is arranged to be rotatable and switchable between a rearward position and a forward position; the lower sides of the front foot 3 and the rear foot 1 are respectively connected to a front wheel group and a rear wheel group that can rotate horizontally; when the rider rotates to the rear position, the rear wheel group is linked to switch to a directional state, the rear wheel group cannot rotate horizontally relative to the rear foot, and the rear wheel group is at a first angle position relative to the rear foot; when the rider rotates to the forward position, the front wheel group is linked to switch to In the directional state, the front wheel group cannot rotate horizontally relative to the front foot, and the front wheel group is in a second angle position relative to the front foot; the front wheel group and the rear wheel group are both provided with brake mechanisms, and the front foot and the rear foot are both provided with brake drive devices; when the rear wheel group is in a first angle position relative to the rear foot, the brake mechanism on the rear wheel group is in a state that can cooperate with the brake drive device on the rear foot, and driving the brake drive device on the rear foot can put the brake mechanism on the rear wheel group in a braking state; when the front wheel group is in a second angle position relative to the front foot, the brake mechanism on the front wheel group is in a state that can cooperate with the brake drive device on the front wheel, and driving the brake drive device on the front foot can put the brake mechanism in a braking state.

[0040] The front wheel assembly includes a front wheel seat 31 connected to the front leg 3 for relative horizontal rotation and a front wheel 32 connected to the front wheel seat 31 , and the rear wheel assembly includes a rear wheel seat 13 connected to the rear leg 1 for relative horizontal rotation and a rear wheel 14 connected to the rear wheel seat 13 . The brake mechanism on the front wheel group or the rear wheel group includes a brake hole 141, 321 arranged on the front wheel 32 or the rear wheel 14, a first functional cavity 130 opened upwardly and arranged on the front wheel seat 31 or the rear wheel seat 13, a brake member 132 movably connected in the first functional cavity 130, and a brake elastic member 133 arranged between the brake member 132 and the front wheel seat 31 or the rear wheel seat 13, wherein a brake pin (not shown) is arranged on the lower side of the brake member 132 on the side facing the front wheel 32 or the rear wheel 14; a through hole (not shown) is arranged on the side wall of the first functional cavity on the side facing the front wheel 32 or the rear wheel 14, and under the action of the brake elastic members 312, 140, the brake member 132 moves relative to the front wheel seat 31 or the rear wheel seat 13, and the brake pin is separated from the brake hole; the upper side of the brake member 132 is driven to move relative to the front wheel seat 31 or the rear wheel seat 13, and the brake pin on the lower side of the brake member 132 can be linked to pass through the through hole and extend into the brake hole to brake.

[0041] When the rider 3 is in the backward position, the first functional cavity 130 on the rear wheel seat 13 is vertically opposite to the lower side of the brake driving device on the rear foot 1, so that the brake driving device can be driven to extend downward into the first accommodating cavity 130 to drive the upper side of the brake member 132 to move relative to the rear wheel seat 13, thereby linking the brake pin to relatively pass through the through hole to extend into the brake hole 141 of the rear wheel 14 to achieve braking. Similarly, when the rider 3 is in the forward position, the first functional cavity on the front wheel seat 31 is vertically opposite to the lower side of the brake driving device on the front foot 3, so that the brake driving device can be driven to extend downward into the first accommodating cavity 130 to drive the upper side of the brake member 132 to move relative to the front wheel seat 31, thereby linking the brake pin to relatively pass through the through hole to insert into the brake hole 321 of the front wheel to achieve braking.

[0042] The brake device on the front foot 3 or the rear foot 1 includes a brake driving member 300, 133 movably connected to the front foot 3 or the rear foot 1, a first brake transmission member 301, 134 connected to the front foot 3 or the rear foot 1 and movable left and right, and a second brake transmission member 135 connected to the front foot 3 or the rear foot 1 and movable up and down. The brake driving member is arranged in cooperation with the opposite side of the first brake transmission member, and the upper side of the second brake transmission member 135 is arranged in cooperation with the side of the first brake transmission member away from the brake driving member; only when the rear wheel group is in a first angular position relative to the rear foot 1, the lower side of the second brake transmission member 135 of the brake device on the rear foot 1 faces the first functional cavity of the rear wheel seat. In this way, when the brake driving member 133 on the rear foot 1 is driven to move relative to the rear foot 1, the first brake transmission member 134 connected to the rear foot 1 is pushed to move toward the second brake transmission member 135, thereby driving The second brake transmission member 135 is moved downward and extended into the first functional cavity 130 to drive the upper side of the brake member 132 to move relative to the wheel seat, thereby linking the brake pin on the lower side of the brake member 132 to pass through the through hole and extend into the brake hole 141 of the rear wheel 14 to brake; only when the front wheel group is in the second angular position relative to the front foot 3, the lower side of the second brake transmission member 135 of the brake device on the front foot 3 faces the first functional cavity of the front wheel seat 32. In this way, when the brake driving member 300 on the front foot 3 is driven to move relative to the front foot 3, the first brake transmission member 133 on the front foot 3 is pushed to move toward the first brake transmission member 134, thereby driving the second brake transmission member 135 to move downward and extend into the first functional cavity 130 to drive the upper side of the brake member 132 to move relative to the front wheel seat 13, thereby linking the brake pin on the lower side of the brake member 132 to pass through the through hole and engage in the brake hole of the front wheel 32 to brake. Only when the rear wheel assembly rotates horizontally relative to the rear leg 1 to a non-first angle position, the lower side of the second brake transmission member 135 of the brake device on the rear leg 1 is misaligned with the first functional cavity of the rear wheel seat, so that the second brake transmission member 135 cannot extend into the first functional cavity, that is, the braking operation cannot be performed.

[0043] In this embodiment, the brake member 132 is pivotally connected to the first functional cavity 130, and the upper side and the lower side of the brake member 132 are linked to the wheel seat in a seesaw-like manner. That is, under the action of the brake elastic member 312, the upper side of the brake member 132 rotates toward the corresponding front wheel 32 or rear wheel 14, and the lower side of the brake member 132 rotates away from the front wheel 32 or rear wheel 14, thereby disengaging from the brake hole; the upper side of the brake member 132 is driven to move away from the front wheel 32 or rear wheel 14, and the lower side of the brake member 132 rotates toward the front wheel 32 or rear wheel 14, and the brake pin passes through the through hole and is inserted into the brake hole of the front wheel 32 or rear wheel 14, so that the brake mechanism is in a braking state.

[0044] Preferably, the side of the first brake transmission member facing away from the brake driving member and the upper side of the second brake transmission member are respectively provided with a third inclined surface and a fourth inclined surface 1351 that match each other. The upper side of the brake member 132 is provided with a sixth inclined surface 1320 toward the corresponding front wheel 32 or rear wheel 14, and correspondingly, the lower side of the second brake transmission member 135 is provided with a fifth inclined surface 1352 that can match the sixth inclined surface 1320.

[0045] The lower sides of the front foot 3 and the rear foot 1 are both provided with a second functional cavity 1360 with an opening facing downwards, and the second brake transmission member 135 is connected to the second functional cavity 1360 so as to be relatively movable up and down; the second functional cavity 1360 is provided with a first notch 1361 for inserting the first brake transmission member into the first functional cavity 1360 at a position facing the first brake transmission member; only when the front wheel assembly is at the second angle position relative to the front foot 3, the second functional cavity 1360 on the front foot 3 is vertically connected with the first functional cavity of the front wheel seat 31; when the rear wheel assembly is at the second angle position relative to the rear foot 1, the second functional cavity 1360 on the rear foot 1 is vertically connected with the first functional cavity of the rear wheel assembly wheel seat. Similarly, when the front wheel assembly 1 is horizontally rotated to a non-second angle position relative to the front foot 3, the second functional cavity 1360 on the front foot 3 is misaligned with the first functional cavity of the front wheel seat 31, so that the second brake transmission member cannot extend into the first functional cavity, that is, the braking operation cannot be performed.

[0046] In this embodiment, the lower sides of the front foot 3 and the rear foot 1 are both provided with a receiving cavity 137 opening downward, the receiving cavity 137 is connected with a receiving seat 136, the receiving seat 136 is provided with the second functional cavity 1360, and the wall of the receiving cavity 137 is provided with a second notch 1371 at a position facing the first brake transmission member.

[0047] Preferably, a first transmission elastic member capable of driving the first brake transmission member to move toward the brake transmission member is provided between the front foot 3, the rear foot 1 and the first brake transmission member connected thereto, thereby facilitating the resetting of the first brake transmission member. A second transmission elastic member capable of driving the second brake transmission member 135 to move upward is provided between the front foot 3, the rear foot 1 and the second brake transmission member 302 connected thereto, thereby facilitating the resetting of the first brake transmission member.

[0048] In this embodiment, the child stroller includes two left and right 1000, each 1000 includes the front foot 3, the rider 3, the rear foot 1, the front wheel group, and the rear wheel group, and the front wheel group and the rear wheel group of each 1000 are provided with the brake mechanism, and the front foot 3 and the rear foot 1 of each 1000 are provided with the receiving seat 136 and the second brake transmission device. Preferably, the lower sides of the rear feet 1 of the two 1000 are connected by the rear connecting member 1330, the brake driving member is movably connected to the rear connecting member 1330, and the first brake transmission member is provided with two left and right parts, which are connected to the rear connecting member 1330 and are respectively located on both sides of the brake driving member. Correspondingly, the lower sides of the front feet 3 of the two 1000 are connected by the front connecting member 30, the brake driving member on the front foot 3 is movably connected to the front connecting member 30, and the first brake transmission member is provided with two left and right parts, which are connected to the front connecting member 30 and are respectively located on both sides of the brake driving member. Therefore, when the brake operation is enabled, the two front wheels 32 or the two rear wheels 14 can be driven at once by the brake drive device to brake or unlock the brake.

[0049] In one embodiment, in combination Figures 7 to 13 As shown, the brake driver 133 is arranged to be connected to the front foot 3 or the rear foot 1 so as to be relatively movable up and down, and the brake driver 133 and the first brake transmission member 134 are respectively provided with a first inclined surface and a second inclined surface 1341 that match each other on opposite sides. Preferably, an elastic reset member (not shown) is arranged between the brake driver 133 and the front foot 3 or the rear foot 1, so as to facilitate the elastic reset of the brake driver 133.

[0050] For easier installation, the rear connecting member 1330 is provided with a connecting cavity 1333 opening downward and extending left and right, and the two sides of the connecting cavity are respectively connected to the second notches 1371 on the two rear legs 1; a reinforcing member 1332 is fixedly connected to the connecting cavity 1333, and the first brake transmission member 134 is connected to the reinforcing member 1332 so as to be movable left and right. The brake driving member 133 is connected to the rear connecting member 1330 and the reinforcing member 1332 so as to be relatively movable up and down, and a hole 1331 is provided on the top wall of the connecting cavity for the brake driving member 133 to extend upward, so as to facilitate stepping on the brake driving member 133.

[0051] In another embodiment, if Fig.14 , 15 As shown, the brake driving member 300 is configured to be connected to the front foot 3 or the rear foot 1 so as to be rotatable relative to each other up and down, an arc-shaped driving portion 302 is provided on one side of the brake driving member 300, the upper end surface of the driving portion 301 is provided as a driving inclined surface 303, and a locking groove 304 is provided at one end of the driving portion 301 facing the second brake transmission member; a second inclined surface 3011 matching the driving inclined surface 303 is provided on the side of the first brake transmission member away from the second brake transmission member 135, and the top wall of the locking groove 304 is also provided as an inclined surface.

[0052] When the brake mechanism is in the unlocked state, the second inclined surface 3011 leans against the driving inclined surface 303 , so that the second inclined surface cooperates with the driving inclined surface 303 .

[0053] The driving portion 301 is designed to be arc-shaped, so that when the brake driving member rotates downward, before the brake mechanism brakes, the second inclined surface always remains in a state of leaning against the driving inclined surface 303, that is, the two will not separate, thereby ensuring that the rotating brake driving member can indeed push the first brake transmission member 301 to move in the direction of the second brake transmission member 135.

[0054] The positioning groove 304 is configured such that when the brake mechanism is in a braking state, one end of the first brake transmission member 301 away from the second brake transmission member 135 is inserted into the positioning groove 304. In this way, the brake driver 300 will not rotate, thereby enabling the brake mechanism to remain in a braking state.

[0055] In this embodiment, preferably, a matching space 3001 is provided on one side of the brake driver 300, and the arc-shaped driving part 302 is provided in the matching space 3001. The first brake transmission member 301, which is away from the second brake transmission member 135, extends into the matching space and matches with the driving inclined surface 303 on the upper end surface of the arc-shaped driving part 302. Corresponding to the left and right first brake transmission members 301, two matching spaces 3001 facing each other are provided on one side of the brake driver 300.

[0056] In this embodiment, a receiving member 305 is relatively fixedly connected to the lower side of the front connecting member 30, and the middle part of the receiving member 305 is arranged in a connecting space 3051. One side of the brake driving member 300 can be relatively rotated up and down and pivoted in the connecting space 3051; and one side of the receiving member 305 is provided with cavities 306 on both sides of the connecting space for the two first brake transmission members 301 to be movably connected. The other side of the receiving member 305 is provided with pivoting spaces 307 on both sides of the connecting space 3051, and the two sides of a transfer tube 308 are relatively fixedly connected in the pivoting spaces, and the brake driving member 300 is pivoted to the transfer tube 308.

[0057] The brake drive member on the front foot 3 of the utility model adopts the following Fig.14 , 15 The design is that the brake driving member is connected to the rear foot 1 so that it can rotate up and down relatively, and the brake driving member on the rear foot 1 is connected to the rear foot 1 so that it can move up and down relatively. In other embodiments, they can be interchangeable or the same design can be adopted.

[0058] The brake holes 141 and 321 of the front wheel 32 and the rear wheel 14 can be disposed on the wheel hub. This is a conventional design and will not be described in detail herein.

[0059] When there is no external force, under the action of the brake elastic member 312, the lower side of the brake member 132 rotates away from the front wheel 32 or the rear wheel 14, the brake pin disengages from the brake hole of the wheel hub, and the brake mechanism is in an unlocked state, so that the front wheel 32 or the rear wheel 14 can rotate, and the child stroller of the utility model can move.

[0060] When the rider 3 rotates to the backward position, the rear wheel group is in a directional state, and the rear wheel group is in a second angular position relative to the rear foot 1; at this time, the second functional cavity 1360 in the rear foot 1 is aligned with the first functional cavity on the rear wheel seat so as to be connected with each other. At this time, the brake driving member 133 on the rear foot 1 can be stepped on downward, and the first inclined surfaces on both sides of the brake driving member 133 interact with the second inclined surfaces 1341 of the two first brake transmission members 134 respectively, so that the two first brake transmission members 134 move away from each other, that is, both move toward the direction of the second brake transmission 135, and as the first brake transmission member 134 moves in this way, the third inclined surface 1342 on the side away from the brake driving member 133 and the fourth inclined surface 1351 on the upper side of the second brake transmission member 135 The second brake transmission member 135 moves downward, and the lower side of the second brake transmission member 135 extends from the second functional cavity 1360 into the first functional cavity 130. As the second brake member 132 moves downward, the fifth inclined surface 1352 on the lower side contacts and interacts with the sixth inclined surface 1320 on the upper side of the brake member 132, thereby pushing the upper side of the brake member 132 to rotate away from the rear wheel 14, thereby rotating the lower side of the brake member 132 toward the side where the rear wheel 14 is located. When any brake hole 141 on the hub of the rear wheel 14 is aligned with the brake pin on the lower side of the brake member 132, the brake pin is inserted into the brake hole, and the brake mechanism is in a braking state, and the rear wheel 14 is braked and cannot rotate, so that the child stroller of the utility model cannot move forward. When the brake mechanism is in a braking state, the brake drive member is also in a positioning state and cannot move up and down, so that the brake mechanism can be maintained in a braking state.

[0061] When the brake mechanism is to be unlocked, continue to press down on the brake driving member to make the brake driving member move upward in the opposite direction. In this way, under the action of the brake elastic member 312, the first transmission elastic member and the second transmission elastic member 137, the brake member 132, the first brake transmission member 134 and the second brake transmission member 135 move in the opposite direction, that is, the second brake transmission member 135 moves upward, the first brake transmission member 134 moves toward the brake driving member 133, the upper side of the brake member 132 moves toward the direction where the rear wheel 14 is located, and the lower side moves away from the rear wheel 14, so that the brake pin disengages from the brake hole 141, the brake mechanism is unlocked, the rear wheel 14 can rotate freely, and the child stroller of the utility model can move forward.

[0062] The brake drive member can be connected to the rear foot 1 or the front foot 3 so as to be relatively movable up and down to realize the above-mentioned operation function. The specific connection method can be any known and feasible structure, and it does not mention the inventive point of the utility model, so it will not be repeated here.

[0063] When the rider 3 rotates to the forward position, the linked front wheel assembly is switched to the positioning state, and the front wheel assembly is at a second angle position relative to the front foot 3. At this time, the second functional cavity 1360 in the front foot 3 is aligned with the first functional cavity on the front wheel seat 31 so as to be connected with each other. The brake drive member 300 is rotated downward, and the first brake transmission member 301 moves toward the second brake transmission member 135 through the interaction between the second inclined surface 3011 and the driving inclined surface 303. The third inclined surface 3012 of the first brake transmission member interacts with the fourth inclined surface on the upper side of the second brake transmission member, so that the second brake transmission member 135 moves downward, and the lower side of the second brake member 132 extends from the second functional cavity 1360 into the first functional cavity, and contacts and interacts with the fifth inclined surface on the upper side of the brake member 132 through the fourth inclined surface on the lower side, thereby pushing the upper side of the brake member 132 to rotate away from the front wheel 32, thereby causing the lower side of the brake member 132 to rotate toward the side where the front wheel 32 is located. When any brake hole 321 on the hub of the front wheel 32 is aligned with the brake pin on the lower side of the brake member 132, the brake pin is inserted into the brake hole, and the brake mechanism is in a braking state. The front wheel 32 is braked and cannot rotate, so that the child stroller of the utility model cannot move. When the brake drive member rotates until the brake mechanism is in a braking state, the opposite sides of the two first brake transmission members 301 also respectively pass over the driving inclined surface 303 on the upper side of the driving part 301 of the brake drive member and align with the locking groove 304 of the driving part 301. Under the action of the first transmission elastic member, the two first brake transmission members 301 will move toward each other, so that the opposite sides of the two first brake transmission members 301 will be respectively inserted into the locking grooves 304 of the driving parts 301 on both sides of the brake drive member, so that the brake drive member 300 is also in a positioning state and cannot rotate up and down. Because the distance that the two first brake transmission members 3011 move toward each other and insert into the corresponding side locking grooves 304 is relatively short, basically only the end of the first brake transmission member is inserted into the locking groove 304. Therefore, even if the second brake transmission member 134 moves upward a certain distance due to the movement of the first brake transmission member 3011, the brake pin still remains in the state of being inserted into the brake hole 321, that is, the brake mechanism is still in a braking state.

[0064] When the brake mechanism is to be unlocked, the brake drive member is rotated upward, and the first brake transmission member 301 is pushed toward the second brake transmission member 135 through the inclined surface of the top wall of the locking groove 304. When the first brake transmission member moves to disengage from the locking groove 304, under the action of the first elastic member, the two first brake transmission members 301 move relative to each other, and under the action of the second elastic member and the third elastic member, the brake member 132, the first brake transmission member, and the second brake transmission member move in opposite directions, that is, the second brake transmission member moves upward, the upper side of the brake member 132 moves toward the direction where the front wheel 32 is located, and the lower side moves away from the front wheel 32, so that the brake pin disengages from the brake hole, the brake mechanism is unlocked, the front wheel 32 can rotate freely, and the child stroller of the utility model can move forward.

[0065] Because the caregiver usually pushes the child stroller forward by pushing the rider 3, and the child stroller of the utility model is provided with a brake mechanism and a brake unlocking device at the front and rear. When the rider 3 is in the rear position, the caregiver stands on the side of the rear wheel 14, and the second functional cavity in the rear foot 1 is aligned with the first functional cavity on the corresponding side wheel seat so as to communicate with each other; when the rider 3 is in the forward position, the caregiver stands on the side of the front wheel 32, and the second functional cavity in the front foot 3 is aligned with the first functional cavity on the corresponding side wheel seat so as to communicate with each other. Therefore, no matter whether the rider 3 is in the forward position or the rear position, the brake mechanism located on the operator's side is just in a state that can cooperate with the corresponding brake drive device, so that the brake can be applied by operating the brake drive device, without the need for additional operation to rotate the front wheel group / rear wheel group to a state that can cooperate. In this way, the brake operation is particularly convenient.

[0066] A front wheel orientation mechanism and a rear wheel orientation mechanism capable of limiting the relative horizontal rotation of the two are respectively arranged between the front foot 3 and the front wheel group, and between the rear foot 1 and the rear wheel group, that is, a front wheel orientation mechanism capable of limiting the relative horizontal rotation of the two is arranged between the front foot 3 and the front wheel group, and a rear wheel orientation mechanism capable of limiting the relative horizontal rotation of the two is arranged between the rear foot 1 and the rear wheel group; when the rider rotates to the rear position, the rear wheel orientation mechanism can be linked to be converted into a locked state, and the front wheel orientation mechanism can be linked to be converted into an unlocked state, so that the rear wheel group is in an oriented state, the rear wheel group cannot rotate horizontally relative to the rear foot, and the front wheel can rotate horizontally relative to the front foot; when the rider rotates to the forward position, the front wheel orientation mechanism can be linked to be converted into a locked state, and the rear wheel orientation mechanism can be linked to be converted into an unlocked state, so that the front wheel group is in an oriented state, the front wheel group cannot rotate horizontally relative to the front foot, and the rear wheel group can rotate horizontally relative to the rear foot 1.

[0067] The front-wheel orientation mechanism comprises a front-wheel orientation piece 33 connected to the lower side of the front foot 3 so as to be movable up and down relatively, a first matching portion arranged on the front-wheel seat 31 and capable of matching with the front-wheel orientation piece 33, and a sixth elastic piece 37 is provided between the front-wheel orientation piece 33 and the front foot 3 and capable of driving the front-wheel orientation piece 33 to move downward; when the front-wheel orientation piece 33 moves downward and matches with the first matching portion, the front-wheel orientation mechanism is in a locked state, and the front wheel assembly cannot rotate horizontally relative to the front foot 3; when the front-wheel orientation piece 33 is disengaged from the first matching portion, the front-wheel orientation mechanism is unlocked, and the front wheel assembly can rotate horizontally relative to the front foot 3.

[0068] In this embodiment, the first matching portion is a directional hole 311 (such as Figure 4 , 5 As shown), the directional hole 311 is the first matching part; when the lower side of the front wheel directional member 33 extends into the directional hole 1 311, the front wheel directional mechanism is in a locked state, and the front wheel seat 31 cannot rotate horizontally relative to the front foot 3; when the front wheel directional member 33 moves upward and disengages from the directional hole 1 311, the front wheel directional mechanism is unlocked, and the front wheel seat 31 can rotate horizontally relative to the front foot 3.

[0069] The rear-wheel orientation mechanism comprises a rear-wheel orientation piece 15 connected to the lower side of the rear foot 1 so as to be movable up and down relatively, a second matching part arranged on the rear wheel assembly and matching with the rear-wheel orientation piece 15, the lower side of the seventh connecting piece is connected to the rear-wheel orientation piece 15, and an eighth elastic piece 19 is arranged between the rear-wheel orientation piece 15 and the rear foot 1 and can drive the rear-wheel orientation piece 15 to move downward; when the rear-wheel orientation piece 15 moves downward and matches with the second matching part, the rear-wheel orientation mechanism is in a locked state, and the rear wheel assembly cannot rotate horizontally relative to the front foot 3; when the rear-wheel orientation piece 15 moves upward and disengages from the second matching part, the rear-wheel orientation mechanism is unlocked, and the rear wheel assembly can rotate horizontally relative to the rear foot 1.

[0070] The second matching portion is a second directional hole 131 that opens upward and is disposed on the rear wheel seat 13. The second directional hole 131 is configured as the second matching portion. When the lower side of the rear wheel directional member 15 extends into the second directional hole 131, the rear wheel directional mechanism is in a locked state, and the rear wheel seat 13 cannot rotate horizontally relative to the rear foot 1 (such as Figure 4 , 5 , 6), when the rear wheel orientation member 15 moves upward and disengages from the second orientation hole 131, the rear wheel orientation mechanism is unlocked, and the rear wheel seat 13 can rotate horizontally relative to the rear foot 1.

[0071] The lower side of the rear foot 1 is provided with a receiving hole 100 which opens downwards, and the upper side of the rear wheel orientation member 15 can be relatively moved up and down in the receiving hole 100. Specifically, the receiving hole 100 is provided in the receiving seat 136, and the eighth elastic member 19 is placed between the top wall of the receiving cavity 137 and the rear wheel orientation member 15. Similarly, the front foot 3 and the front wheel orientation member 33 and the sixth elastic member 37 can also adopt this setting. The front foot and the rear foot adopt the design of connecting the receiving seat in the receiving cavity, which is more convenient for assembling the rear wheel orientation member 15, the eighth elastic member 19, the front wheel orientation member 33, the sixth elastic member 37, the second brake transmission member and the second elastic.

[0072] Combination Figures 16 to 22 As shown, in this embodiment, the driver 2 is connected to a working member 8 that can rotate with the driver 2, and a front wheel linkage device and a rear wheel linkage device are respectively arranged between the front wheel orientation mechanism, the rear wheel orientation mechanism and the working member 8; the working member 8 includes a body 81, and the body 81 is arranged in a cam shape, and the front wheel linkage device and the rear wheel linkage device are in contact with the outer surface of the cam-shaped body 81 on one side facing the working member 8. During the rotation and reversing process of the driver 2, the contact position of the front wheel linkage device and the rear wheel linkage device with the outer surface of the cam-shaped body 81 changes in rotation, thereby changing the unlocking state or locking state of the front wheel orientation mechanism and the rear wheel orientation mechanism in linkage. That is, if the front wheel orientation mechanism and the rear wheel orientation mechanism are in a locked state before the driver changes, they are changed to an unlocked state, and if they are in an unlocked state before the driver changes, they are changed to a locked state, thereby changing the state of whether the front wheel group and the rear wheel group can rotate horizontally.

[0073] When the rider 2 rotates to a rearward position, the rear wheel orientation mechanism can be linked to a locked state through a rear wheel linkage device, and the front wheel orientation mechanism can be linked to an unlocked state through a front wheel linkage device, so that the rear wheel group cannot rotate horizontally relative to the rear foot 1, and the front wheel group can rotate horizontally relative to the front foot 3; when the rider 2 rotates to a forward position, the rear wheel orientation mechanism can be linked to an unlocked state through a rear wheel linkage device, and the front wheel orientation mechanism can be linked to a locked state through a front wheel linkage device, so that the rear wheel group can rotate horizontally relative to the rear foot 1, and the front wheel group cannot rotate horizontally relative to the front foot 3.

[0074] The front wheel linkage device includes a front wheel driving member 34 that can move relative to the front foot and / or the rear foot 1, a fifth elastic member 35 arranged between the front wheel driving member 34 and the front foot 3 and capable of driving the front wheel driving member 34 to move toward the direction of the action member 8, and a fourth connecting member 36 connected to the front wheel driving member 34 on the upper side, and the fourth connecting member 36 is connected to the front wheel directing member 33 on the lower side, and the front wheel driving member 34 is in contact with the outer surface of the cam-shaped body 81.

[0075] The rear wheel linkage device includes a rear wheel driving member 16 that can move up and down relative to the rear foot 1, a seventh elastic member 17 arranged between the rear wheel driving member 16 and the rear foot 1 and capable of driving the rear wheel driving member 16 to move toward the action member 8, and a fifth connecting member 18 connected to the rear wheel driving member 16 on the upper side, and the lower side of the fifth connecting member 18 is connected to the rear wheel directing member 15; the rear wheel driving member 16 is in contact with the outer surface of the cam-shaped body 81.

[0076] Under the action of the fifth elastic member 35 and the seventh elastic member 17, the front wheel guide member 34 and the rear wheel guide member 16 are always kept in contact with the outer surface of the cam-shaped body 81. Therefore, when the rider 2 rotates between the forward position and the rearward position to drive the cam-shaped body 81 to rotate, the contact position between the outer surface of the cam-shaped body 81 and the front wheel guide member 34 and the rear wheel guide member 16 rotates and changes, and the front wheel guide member 34 and the rear wheel guide member 16 move.

[0077] In this embodiment, the radius of the base circle of the cam-shaped body 81 is smaller than the straight-line distance between the center of the base circle and the outer surface of the non-base circle portion. Figures 16 to 18 As shown, when the rider 2 is in the rearward position, one side of the front wheel linkage device (specifically, the front wheel guide member 34) contacts the outer surface of the base circle of the cam-shaped body 81 of the action member, and the rear wheel linkage device (specifically, the rear wheel guide member 16) contacts the outer surface of the non-base circle of the cam body 81, and the seventh elastic member 17 is in a compressed state. When the rider rotates to the forward position, the rear wheel linkage device (rear wheel guide member 16) contacts the outer surface of the base circle of the cam-shaped body, the front wheel linkage device (i.e., the front wheel guide member 34) contacts the outer surface of the non-base circle of the cam-shaped body, and the fifth elastic member is in a compressed state.

[0078] When the contact position between the front wheel driving member 34 or the rear wheel driving member 16 and the outer surface of the main body 81 rotates from the non-base circle outer surface to the base circle outer surface, the front wheel driving member 34 or the rear wheel driving member 81 moves in the direction away from the corresponding front wheel or rear wheel, thereby pulling the corresponding fourth connecting member or the fifth connecting member and linking the corresponding front wheel orientation mechanism or the rear wheel orientation mechanism to unlock; when the contact position between the front wheel driving member 34 or the rear wheel driving member 16 and the outer surface of the main body 81 rotates from the base circle outer surface to the non-base circle outer surface, the front wheel driving member 34 or the rear wheel driving member 81 moves in the direction toward the corresponding front wheel or rear wheel, thereby releasing the pulling on the corresponding fourth connecting member or the fifth connecting member, and the corresponding front wheel orientation mechanism or the rear wheel orientation mechanism can be in a locked state.

[0079] In the process of rotating the rider 2 in the rearward position forward, the contact surface between the cam-shaped body 81 and the front wheel guide member 34 rotates from the outer surface of the base circle to the outer surface of the non-base circle part, and the contact surface between the cam-shaped body 81 and the rear wheel guide member 16 rotates from the outer surface of the non-base circle part to the outer surface of the base circle. In this way, the front wheel guide member 34 is driven by the action member 8 to move downward, thereby releasing the pull on the fourth connecting member 36. At this time, under the action of the sixth elastic member 27, when the directional hole 1 311 is aligned with the front wheel directional member 33, the front wheel directional member 33 moves downward, and its lower side moves into the directional hole 1 311 of the front wheel seat 31, so that the front wheel directional mechanism is in a locked state; similarly, as the contact surface between the cam-shaped body 81 and the rear wheel guide member 16 changes from the outer surface of the non-base circle to the outer surface of the base circle part, under the action of the seventh elastic member 17, the rear wheel guide member 16 moves upward relative to the rear foot, so that the rear wheel directional member 15 can be pulled upward from the directional hole 2 131 of the rear wheel seat 13 through the fifth connecting member 18. When the rider 2 rotates to the forward position, as shown in FIG. Fig.19 , 20 As shown, the rear wheel driving member 16 contacts the outer surface of the base circle of the cam-shaped body 81, and the front wheel directional member 33 contacts the outer surface of the non-base circle of the cam-shaped body 81. In this state, the lower side of the rear wheel directional member 15 is completely separated from the directional hole 2 131 of the rear wheel seat 13, the rear wheel directional mechanism is unlocked, and the rear wheel group can rotate horizontally, that is, the rear wheel 14 can rotate horizontally; while the rear side of the front wheel directional member 33 extends into the directional hole 1 311 of the front wheel seat 31, the front wheel directional mechanism is unlocked, and the front wheel group cannot rotate horizontally, that is, the front wheel 32 cannot rotate horizontally.

[0080] When the driver 2 wants to rotate backward from the forward position to the rearward position, the above-mentioned actions are performed in reverse, and the principle is the same.

[0081] As described above, when the rider 2 is in the backward position, the front wheel orientation mechanism is in the unlocked state, and the rear wheel orientation mechanism is in the locked state, so that the rear wheel 14 cannot rotate horizontally, and the front wheel 32 can rotate horizontally; when the rider 2 is in the forward position, the front wheel orientation mechanism is in the locked state, and the rear wheel orientation mechanism is in the unlocked state, so that the original front wheel 32 cannot rotate horizontally, and the original rear wheel 14 can rotate horizontally. That is to say, no matter where the rider 2 is, when the parents push the child stroller forward through the rider 2, the wheel set on the front side in the forward direction of the child stroller can rotate horizontally, and the wheel set on the rear side cannot rotate horizontally. In this way, when the child stroller moves forward, if there are slight obstacles on the road, such as small stones, the wheel set on the front side can rotate horizontally to avoid them, while the wheel set on the rear side maintains the original direction of travel, which can make the child stroller move more smoothly and safely. Moreover, to achieve the above functions, no additional operation is required, and the rotation of the rider 2 can automatically achieve the linkage with the relevant components, so that the operation is very simple.

[0082] Further, such as Fig.21 , 22 As shown, the cam-shaped body 81 and the front wheel linkage device, the rear wheel linkage device, the front wheel orientation mechanism, and the rear wheel orientation mechanism are configured such that, during the folding process of the stroller of the utility model, the front wheel orientation mechanism and the rear wheel orientation mechanism are always kept in the state when the rider 2 is in the rearward position, that is, the rear wheel assembly is always kept in the state where it cannot rotate horizontally relative to the rear foot 1, and the front wheel assembly seat 31 can rotate horizontally relative to the front foot 3. During the folding process of the stroller, the rider rotates backward from the rearward position.

[0083] To achieve the above purpose, in this embodiment, the body 81 includes a first cam 811 and a second cam 812 coaxially arranged on one side of the first cam 811, the second cam 812 has the same base circle diameter as the first cam 811; and the base circle portions of the first cam 811 and the second cam 812 overlap left and right (such as Fig.26 810), the non-base circle parts of the first cam 811 and the second cam 812 extending forward from the overlapped base circle parts are also overlapped left and right (as shown in FIG. Fig.26 8100), the portion of the first cam 811 extending from the overlapped base circle portion to the rear side is a non-base circle (as shown in FIG. Fig.26 8101), the portion of the second cam 812 extending from the overlapped base circle portion to the rear side is the base circle, and the base circle of the second cam 812 is located on the non-base circle portion of the first cam 811; when the rider 3 is in the rearward position, the front wheel orientation member 34 only contacts the outer surface of the base circle of the second cam 812, and the rear wheel orientation member 16 only contacts the outer surface of the non-base circle of the first cam 811 (as shown in FIG. Figures 7 to 9 shown).

[0084] like Fig.21 , 22As shown, because the above arrangement is adopted, when the child stroller of the utility model is folded, as the rider 2 and the action member 8 rotate backward from the rearward position, the change of the contact surface between the action member body 81 and the front wheel guide member 34 is only the rotation change of the specific position of the outer surface of the base circle of the second cam 812, specifically, it is rotated from the outer surface of the part where the base circle of the first cam 811 and the base circle of the second cam 812 overlap to the outer surface of the base circle of the first cam 811 located on the non-base circle part of the second cam 812, that is, the side of the front wheel guide member 34 facing the action member 8 is also moved to the side of the non-base circle part of the second cam 812. In this way, the front wheel guide member 34 will not move up and down relative to the front foot or the rear foot, so that the front wheel orientation mechanism is always kept in the unlocked state, that is, the front wheel is always kept in a state of being able to rotate relative to the front foot 3. The change in the contact surface between the actuator body 81 and the rear wheel driving member 16 is only a rotational change in the specific position of the outer surface of the non-base circle part of the first cam 811. Therefore, the rear wheel driving member 16 will not move up and down relative to the front foot or the rear foot, so that the rear wheel orientation mechanism is always maintained in a locked state, that is, the rear wheel is always kept in a state where it cannot rotate horizontally relative to the rear foot 1.

[0085] As configured above, when the stroller of the utility model is folded, the front wheel 32 can rotate relative to the front leg 3 to an angle that does not interfere with the rear leg 1 and the rear wheel 14, so that the stroller can be flatter and smaller in size after being folded.

[0086] The rear foot 1 is provided with a receiving cavity 10, and the main body 81 of the action member 8 is placed in the receiving cavity 10. The front wheel guide member 34 and the rear wheel guide member 16 extend into the receiving cavity 10 toward one side of the action member 8 and contact the outer surface of the cam-shaped main body 81.

[0087] In this embodiment, the rear foot 1 is provided with a first slide groove and a second slide groove (not shown) with one end communicating with the accommodating cavity 10, and the first slide groove and the second slide groove are respectively used for the front wheel guide member 16 and the rear wheel guide member 34 to be relatively movably placed. The rear foot 1 is connected with a cover plate 12, and the first slide groove is formed between the cover plate 12 and the rear foot 1. When installing, the cover plate 12 is first opened, and after the front wheel guide member 16 and the rear wheel guide member 34 are assembled, the cover plate 12 is fixedly connected to the rear foot 1.

[0088] The front wheel driving member 34 includes a first section 341 and a second section 342 extending from the first section 341 toward the side of the actuator 8, the second section 342 is thinner than the first section 341, and the second section 342 faces the outer surface of the second cam 812. Preferably, a blocking portion 340 is convexly provided on the side wall of the second slide slot, one side of the first section 341 contacts the side wall of the second slide slot, and the same side of the second section 342 contacts the blocking portion 340. In this way, it can be further ensured that the second section 342 only contacts the outer surface of the second cam 812.

[0089] The rear foot 1 is provided with a limiting structure that cooperates with the operating member 8, and the limiting structure is configured so that when the rider 2 rotates forward from the rearward position to the forward position, the cooperation between the operating member 8 and the limiting structure prevents the rider 2 from rotating forward any further. In this way, the operating member 8 can not only drive the front and rear wheels to change their horizontal rotation state, but also can be used to locate the forward position of the rider 2.

[0090] The bottom wall of the accommodating cavity 10 is provided with an arc-shaped limiting groove 101 which is not connected at the head and tail, and the limiting groove 101 is set as the limiting structure; the action member 8 also includes a limiting portion 82 extending from the body 81 to the side of the bottom wall of the accommodating cavity, that is, the limiting portion 82 is arranged on the side of the second cam 812 facing the bottom wall of the accommodating cavity; the limiting portion 82 can be relatively rotatably placed in the arc-shaped limiting groove 101, when the rider 2 is in the forward position, the limiting portion 82 abuts against one end of the limiting groove 101, so that the rider 2 can no longer rotate forward. The limiting groove 101 is not connected at the head and tail, that is, the limiting groove 101 is not arranged in a full circle.

[0091] Because the body 21 is placed in the accommodating cavity 10, and the base circle of the second cam 812 is located on the non-base circle portion of the first cam 811, a portion of the first cam 811 facing the second cam 812 is exposed outside the second cam 812, so that a gap 813 is formed between the portion of the first cam 811 exposed outside the second cam 812 and the bottom wall of the accommodating cavity 10. During the folding process of the child stroller, the side of the front wheel guide member 34 facing the action member 8 (i.e., the side of the second section 342 facing the action member 8) extends into the gap 813 and contacts the outer surface of the base circle of the second cam 812.

[0092] The accommodating chamber 10 is arranged on the side of the rear foot 1 away from the rider 2, and a through hole is arranged on the bottom wall of the accommodating chamber 10 to communicate with the rider 2. The through hole is arranged coaxially with the base circle of the cam-shaped body 81, and the lower side of the rider 2 is connected to the action member 8 through the through hole. The limiting groove 101 is arranged around the outside of the through hole, so that when the rider 2 rotates, the limiting part can always rotate in the limiting groove 101.

[0093] The outer surface of the stopper 82 is configured not to extend beyond the outer surface of the base circle of the second cam 812. In this configuration, the stopper 82 and the cam-shaped body 81 do not interfere with each other, so that the front and rear rotation orientation of the rider 2 and the rotation locking and unlocking of the front wheel seat 31 and the rear wheel seat 13 do not interfere with each other; and the assembly of the action member 8 and the accommodating chamber 10 is more convenient. In this embodiment, preferably, the outer surface of the stopper 82 and the outer surface of the base circle of the second cam 812 are on the same outer diameter.

[0094] The first assembly part 222 is provided on the side of the rider facing the action member 8, and the action member 8 is also provided with a matching platform 83 on the side of the main body facing the rider. One of the first assembly part 222 and the matching platform 8 has a matching square hole recessed on the side facing the other, and the other is set in a square shape, and the other extends into the matching square hole. In this embodiment, the first assembly part 222 is provided on the side of the rider facing the action member 8, and the first assembly part 222 has a matching square hole recessed on the side facing the action member 8; correspondingly, the action member 8 is also provided with a square matching platform 83 on the side of the main body 81 facing the rider 2, and the square matching platform 83 extends into the matching square hole 223. In this way, when the rider 2 rotates, the limiter can rotate synchronously with the rider 2.

[0095] Preferably, a limiting groove 224 is provided on the inner wall of the matching square hole 223, and a corresponding limiting protrusion 831 is provided on the outer wall of the square matching platform 83, and the limiting protrusion 831 extends into the limiting groove 224. Such a configuration not only enables the rotation of the driver 2 to drive the action member 8 more synchronously when the driver 2 rotates, but also facilitates the assembly and positioning of the driver 2 and the action member 8.

[0096] Furthermore, the action member 8 further includes a main body 84 extending from the second cam 812 toward the side of the rider 2, the main body 84 is coaxially arranged with the base circle of the body 81, the limiting portion 82 is convexly arranged on the outer circle of the main body 84, and the main body 84 penetrates the through hole; the square matching platform 83 extends from the main body 84 toward the rider. In this test, the diameter of the main body 84 is adapted to the diameter of the through hole, so that the action member 8 and the rider 2 can rotate more smoothly relative to the rear foot 1.

[0097] Combination Figures 23 to 27 As shown, a second locking mechanism for limiting the relative rotation between the lower side of the rider 2 and the opposite side of the rear foot 1 is provided. In this embodiment, the second locking mechanism comprises a first tooth groove 22 and a second tooth groove 12 respectively provided on the opposite side of the rider 2 and the rear foot 1, a gear 71 provided in the first tooth groove 22 and the second tooth groove 12 so as to be relatively movable left and right, and a second elastic member provided between the bottom wall of the second tooth groove 12 and the gear 71; under the action of the second elastic member, the gear 71 is meshed with the first tooth groove 22 and the second tooth groove 12 at the same time, the second locking mechanism is in a locked state, and the rider 2 cannot rotate relative to the rear foot 1.

[0098] The second tooth groove 12 is arranged on the side of the rear foot away from the accommodating cavity, and the base circle of the through hole is arranged coaxially with the second tooth groove 12. Because the accommodating cavity 10 and the second tooth groove 12 are respectively arranged on different sides of the rear foot 1, the interference of the second locking mechanism on the cooperation of the action member, the front wheel guide member 34, and the rear wheel guide member 16 can be avoided.

[0099] The first assembly portion 222 extends from the bottom wall of the first tooth groove 22 toward the side facing the working member. In the present embodiment, the rear foot 1 is provided with a hollow assembly member 121 coaxially arranged with the through hole on the bottom wall of the second tooth groove 12 in the direction facing the driver 2, and the through hole 11 and the hollow assembly member 121 together form an installation space 122; the first assembly portion 222 extends into the installation space 122 toward the side of the working member 8 and is connected to the square mating platform 83. Such a configuration makes the assembly of the driver 1 and the working member 8 more stable, and can also completely avoid interference with the gear 71. The main body 84 and the square mating platform 83 extend into the installation space 122, and the first assembly portion 222 also extends into the installation space 122 toward the side of the working member 8 and is connected to the square mating platform 83.

[0100] The action member 8 is also provided with a connecting hole 80 which is coaxial with the base circle and penetrates through it; during assembly, the square matching platform 83 extends into the matching square hole 223 of the first assembly part 222, and passes through the rider 2 and the action member 8 through a connecting shaft 120, so that the rider 2, the rear foot 1 and the action member 8 are connected, and the rider 2 and the action member 8 can rotate synchronously relative to the rear foot.

[0101] Combination Figures 18 to 20 As shown, a second unlocking device for unlocking the second locking mechanism is provided between the rider 2 and the second locking mechanism. The second unlocking device includes a second driving member 73 which is relatively rotatable and relatively movable left and right and arranged between the bottom wall of the first tooth groove 22 and the gear 71; the bottom wall of the first tooth groove 22 and the opposite side of the second driving member 73 are respectively provided with a mating active part and a driven part, and when the second driving member 73 rotates, the second driving member 73 moves toward the direction of the gear 71 while rotating through the mating of the active part and the driven part.

[0102] In this embodiment, the active part and the driven part are respectively a boss 221 and a groove 731 arranged on the bottom wall of the first tooth groove 22 and on the opposite side of the second driving member 73, and the boss 221 and the groove 731 are respectively provided with matching active inclined surfaces 2211 and driven inclined surfaces 7311.

[0103] The gear 71 is relatively movable leftward and rightward around the periphery of the hollow assembly 121, the second driving member 73 is arranged around the periphery of the first assembly portion 222, and the boss 221 surrounds the periphery of the first assembly portion 222, so as not to interfere with each other. In other embodiments, the hollow assembly 121 may not be provided, and the accommodating cavity and the second tooth groove 12 are directly connected through the through hole to facilitate the connection between the driver and the action member 8.

[0104] The second unlocking device also includes a second drive group 76 movably connected to the rider 2, and the second drive group 76 is connected to the second drive member 73. The second drive group 76 is driven to move, and the second drive member 73 is pulled to rotate. When the second drive member 73 rotates, the second drive member 73 simultaneously moves in the direction of the gear 71 through the cooperation of the active inclined surface 2211 and the driven inclined surface 7311, thereby pushing the gear 71 to move in the direction of the second tooth groove 12. When the gear 71 is disengaged from the first tooth groove 22 and only meshes with the second tooth groove 12, the second locking mechanism is unlocked, and the rider 2 can rotate relative to the rear foot 1. After the third drive member 74 is released, under the action of the second elastic member, the gear 71 and the second drive member 73 move in the direction of the first tooth groove 22. Through the cooperation of the active inclined surface 2211 and the driven inclined surface 7311, the second drive member 73 rotates in the opposite direction, thereby pulling the third drive member 74 to move downward through the third connecting member 77.

[0105] In this embodiment, the second drive group 76 is configured as an unlocking member connected to the driver 2 so as to be relatively movable upward and downward. By moving the unlocking member 76 upward, the third drive member 74 can be pulled upward through the third connecting member 77. In other embodiments, the second drive group 76 can also be other known and feasible technologies, and the connection between the second drive group 76 and the second drive member 73 can also be any known and feasible structure, which is not the focus of the present invention and will not be described in detail here.

[0106] When the rider 2 in the rearward position is to be rotated to the forward position, the second locking mechanism is unlocked by the second driving device, and then the rider 2 is rotated forward, the operating member 8 rotates together with the rider 2, and the limiting portion 82 on the operating member 8 rotates in the arc-shaped limiting groove 101. When the limiting portion 82 rotates to contact one end of the arc-shaped limiting groove 101, the limiting portion 82 cannot rotate forward any further, that is, the operating member 8 and the rider 2 cannot rotate forward any further, that is, the rider 2 rotates to the forward position; at this time, the gear 71 moves under the action of the second elastic member and is again simultaneously engaged in the first tooth groove 22 and the second tooth groove 12, so that the rider 2 is locked in the forward position.

[0107] Similarly, when the rider 2 in the forward position is to be rotated to the rearward position, the second locking mechanism is unlocked by the second driving device, and then the rider is rotated backward to the rearward position.

[0108] The child stroller further comprises a connecting tube 45, the lower side of which is also pivotally connected to the rear leg 1. Preferably, the lower side of the connecting tube 45 is pivotally connected to the rear leg 1 around the first rotation axis, and the lower side of the rider 2 is pivotally connected to the rear leg 1 around the second rotation axis, and the first rotation axis is arranged parallel to the second rotation axis, or the first rotation axis and the second rotation axis are the same rotation axis, or the first rotation axis and the second rotation axis are on the same straight line. In this way, during the folding process of the child stroller of the utility model, the rider 2 and the connecting tube 45 can rotate at the same angle, so that the folding operation is smoother.

[0109] In this embodiment, the lower side of the rider 2 is located on the side of the action member 8 away from the rider 2, and the lower side of the connecting tube 45, the action member 8, the rear foot 1, and the rider 2 are coaxially arranged through the rotating shaft 120. In this way, assembly is more convenient and the overall structure is more compact.

[0110] The child stroller also includes a linkage folding device arranged between the rear foot 1, the front foot 3, and the connecting tube 45. The linkage folding device is configured so that when the rider 2 rotates backward and downward from the rear position, the linkage folding device can drive the front foot 3 and the rear foot 1 to rotate relative to each other.

[0111] In this embodiment, the linkage folding device includes a first linkage member 41, a second linkage member 42, and a third linkage member 5. The front side of the first linkage member 41 is pivoted to the front foot 3, and the rear side of the second linkage member 42 is pivoted to the rear foot 1. The upper side of the third linkage member 5 is pivoted to the connecting tube 45, and the lower side is coaxially pivoted to the rear side of the first linkage member 41 and the front side of the second linkage member 42, or two of them are pivoted, and the third is pivoted to any one of the two.

[0112] When the stroller of the utility model is in the unfolded state, the pivotal position between the upper side of the third linkage member 5 and the connecting tube 45 is located on the upper side of the pivotal position between the connecting tube 45 and the rear leg 1; the pivotal position between the front side of the first linkage member 41 and the front leg 3 is located on the lower side of the pivotal position between the front leg 3 and the rear leg 1; the pivotal position between the rear side of the second linkage member 42 and the rear leg 1 is located on the lower side of the pivotal position between the rear leg 1 and the rider 2 or / and the front leg 3.

[0113] In this embodiment, the first linking member 41 is a front seat portion of a seat, and the second linking member 42 is a rear seat portion of the seat, that is, the first linking member 41 and the second linking member 42 are both part of the seat portion of a seat. Fig.28 As shown in FIG. 1 , the first linkage member 41-1 can be set as a seat portion of a seat, that is, the first linkage member 41 is a seat portion of a seat. The connecting pipe 45 can be used to connect to the periphery of the front side of a seat fabric, and the seat fabric is also connected to the seat portion of the seat. The connection method of the seat fabric, the connecting pipe, and the seat can be any known and feasible structure, which is not the invention point of the utility model and will not be described here.

[0114] The first linkage member 41 and the second linkage member 42 together form a seat portion for supporting a child to sit on. Therefore, when the child stroller of the utility model is folded, the seat is folded together, making the folding operation simpler and more convenient as a whole.

[0115] Those skilled in the art should understand that the directions or positional relationships indicated by the above-mentioned terms "upper", "lower", "left", "right", "front", "rear", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings. As described above, the front is where the front wheel is, the rear is where the rear wheel is, the top is where the rider is, and the bottom is where the front and rear wheels are. The rider and the seat back tube are located on the left and right sides of the rear foot, respectively. The above description is only for the convenience of describing the embodiments of the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. When the visual observation changes, the above-mentioned direction or positional relationship will also change accordingly, and therefore cannot be understood as a limitation to the present invention.

Claims

1. A child stroller with convenient braking, comprising a rear foot, a rider, and a front foot pivotally connected to the rear foot at the rear side, wherein the lower side of the rider is pivotally connected to the rear foot or / and the front foot, and the rider is arranged to be rotatable between a rearward position and a forward position; the lower sides of the front foot and the rear foot are respectively connected to a front wheel group and a rear wheel group that can rotate horizontally, Features: When the rider rotates to the backward position, the rear wheel group is linked to be converted to the directional state, and the rear wheel group is in a first angle position relative to the rear foot; when the rider rotates to the forward position, the front wheel group is linked to be converted to the directional state, and the front wheel group is in a second angle position relative to the front foot; the front wheel group and the rear wheel group are both provided with brake mechanisms, and the front foot and the rear foot are both provided with brake drive devices; the brake drive device and the brake mechanism are configured so that when the front wheel group is in the directional state, when the front wheel group is in the second angle position relative to the front foot, the brake mechanism on the front wheel group is in a state that can be matched with the brake drive device on the front wheel, and driving the brake drive device on the front foot can put the brake mechanism in a braking state; when the rear wheel group is in the directional state, when the rear wheel group is in the first angle position relative to the rear foot, the brake mechanism on the rear wheel group is in a state that can be matched with the brake drive device on the rear foot, and driving the brake drive device on the rear foot can put the brake mechanism on the rear wheel group in a braking state.

2. The child stroller with convenient braking according to claim 1, Features: The front wheel group includes a front wheel seat connected to the front foot and rotatable relative to the horizontal direction, and a front wheel connected to the front wheel seat, and the rear wheel group includes a rear wheel seat connected to the rear foot and rotatable relative to the horizontal direction, and a rear wheel connected to the rear wheel seat; the brake mechanism on the front wheel group or the rear wheel group includes a brake hole arranged on the front wheel or the rear wheel, a first functional cavity opened upwardly arranged on the front wheel seat or the rear wheel seat, a brake member movably connected in the first functional cavity, and a brake elastic member arranged between the brake member and the front wheel seat or the rear wheel seat, and a brake pin is arranged on the lower side of the brake member on the side facing the front wheel or the rear wheel; a through hole is arranged on the side wall of the first functional cavity facing the side facing the front wheel or the rear wheel, and under the action of the brake elastic member, the brake member moves relative to the front wheel seat or the rear wheel seat, and the brake pin is disengaged from the brake hole; the upper side of the brake member is driven to make it move relative to the front wheel seat or the rear wheel seat, and the brake pin on the lower side of the brake member can be linked to pass through the through hole and extend into the brake hole to brake.

3. The child stroller with convenient braking according to claim 2, Features: When the rider is in the rearward position, the first functional cavity on the rear wheel seat is vertically opposite to the lower side of the brake driving device on the rear foot, so that the brake driving device can be driven to extend downward into the first accommodating cavity to drive the upper side of the brake member to move relative to the rear wheel seat to brake; When the rider is in the forward position, the first functional cavity on the front wheel seat is vertically opposite to the lower side of the brake drive device on the front foot, so that the brake drive device can be driven downward into the first accommodating cavity to drive the upper side of the brake member to move relative to the front wheel seat, thereby achieving braking.

4. The child stroller with convenient braking according to claim 3, Features: The brake device on the front foot or the rear foot includes a brake driving member movably connected to the front foot or the rear foot, a first brake transmission member connected to the front foot or the rear foot so as to be relatively movable left and right, and a second brake transmission member connected to the front foot or the rear foot so as to be relatively movable up and down. The brake driving member is cooperated with the opposite side of the first brake transmission member, and the upper side of the second brake transmission member is cooperated with the side of the first brake transmission member away from the brake driving member. Only when the rear wheel group is at a first angular position relative to the rear foot, the lower side of the second brake transmission member of the brake device on the rear foot faces the first functional cavity of the rear wheel seat, and only when the front wheel group is at a second angular position relative to the front foot, the lower side of the second brake transmission member of the brake device on the front foot faces the first functional cavity of the front wheel seat.

5. The child stroller with convenient braking according to claim 4, Features: The brake driving member is connected to the front foot or the rear foot so as to be movable up and down relatively or rotatable up and down relatively.

6. The child stroller with convenient braking according to claim 5, Features: When the brake driving member is configured to be connected to the front foot or the rear foot so as to be rotatable relative to each other up and down, an arc-shaped driving portion is provided on one side of the brake driving member, and the upper end surface of the driving portion is provided as a driving inclined surface. A second inclined surface matching the driving inclined surface is provided on the side of the first brake transmission member away from the second brake transmission member, and the driving portion is designed to be arc-shaped, so that when the brake driving member rotates downward, the second inclined surface is always kept in a state of leaning against the driving inclined surface before the brake mechanism brakes.

7. The child stroller with convenient braking according to claim 6, Features: The driving part is provided with a locking groove at one end facing the second brake transmission member, and the top wall of the locking groove is also provided with an inclined surface; the locking groove is configured so that when the brake mechanism is in a braking state, the end of the first brake transmission member facing away from the second brake transmission member is inserted into the locking groove.

8. The child stroller with convenient braking according to any one of claims 4 to 7, Features: A first transmission elastic member capable of driving the first brake transmission member to move toward the brake transmission member is arranged between the front foot, the rear foot and the first brake transmission member connected thereto.

9. The child stroller with convenient braking according to claim 8, Features: A second transmission elastic member capable of driving the second brake transmission member to move upward is arranged between the front foot, the rear foot and the second brake transmission member connected thereto.

10. The child stroller with convenient braking according to claim 9, Features: The lower sides of the front foot and the rear foot are both provided with a receiving cavity opening downwards, a receiving seat is connected to the receiving cavity, a second functional cavity opening downwards is provided in the receiving seat, and the second brake transmission member is connected to the second functional cavity so as to be relatively movable up and down; only when the front wheel assembly is at the second angular position relative to the front foot, the second functional cavity on the front foot is connected to the first functional cavity of the front wheel seat up and down; when the rear wheel assembly is at the second angular position relative to the rear foot, the second functional cavity on the rear foot is connected to the first functional cavity of the rear wheel assembly seat up and down; the second functional cavity wall and the receiving cavity wall are respectively provided with a first notch and a second notch at the position facing the first brake transmission member.

11. The child stroller with convenient braking according to any one of claims 1 to 7 and 9, Features: A front wheel orientation mechanism and a rear wheel orientation mechanism are respectively arranged between the front foot and the front wheel group and between the rear foot and the rear wheel group, which can limit the relative horizontal rotation of the two. When the rider rotates to the rear position, the rear wheel orientation mechanism can be linked to switch to a locked state, and the front wheel orientation mechanism can be linked to switch to an unlocked state; when the rider rotates to the forward position, the front wheel orientation mechanism can be linked to switch to a locked state, and the rear wheel orientation mechanism can be linked to switch to an unlocked state.

12. The child stroller with convenient braking according to claim 11, Features: The front wheel orientation mechanism comprises a front wheel orientation piece connected to the lower side of the front foot so as to be relatively movable up and down, a first matching portion arranged on the front wheel seat and capable of matching with the front wheel orientation piece, and a sixth elastic piece which can drive the front wheel orientation piece to move downward is arranged between the front wheel orientation piece and the front foot; when the front wheel orientation piece moves downward and matches with the first matching portion, the front wheel orientation mechanism is in a locked state; when the front wheel orientation piece is disengaged from the first matching portion, the front wheel orientation mechanism is unlocked.

13. The child stroller with convenient braking according to claim 12, Features: The rear-wheel orientation mechanism comprises a rear-wheel orientation piece connected to the lower side of the rear foot so as to be relatively movable up and down, a second matching part arranged on the rear wheel assembly and capable of matching with the rear-wheel orientation piece, and an eighth elastic piece is arranged between the rear-wheel orientation piece and the rear foot and capable of driving the rear-wheel orientation piece to move downward; when the rear-wheel orientation piece moves downward and matches with the second matching part, the rear-wheel orientation mechanism is in a locked state; when the rear-wheel orientation piece moves upward and disengages from the second matching part, the rear-wheel orientation mechanism is unlocked.

14. The child stroller with convenient braking according to claim 10, Features: A front wheel orientation mechanism and a rear wheel orientation mechanism are respectively arranged between the front foot and the front wheel group and between the rear foot and the rear wheel group, which can limit the relative horizontal rotation of the two. When the rider rotates to the rear position, the rear wheel orientation mechanism can be linked to switch to a locked state, and the front wheel orientation mechanism can be linked to switch to an unlocked state; when the rider rotates to the forward position, the front wheel orientation mechanism can be linked to switch to a locked state, and the rear wheel orientation mechanism can be linked to switch to an unlocked state.

15. The child stroller with convenient braking according to claim 14, Features: The front wheel orientation mechanism comprises a front wheel orientation piece connected to the lower side of the front foot so as to be relatively movable up and down, a first matching portion arranged on the front wheel seat and capable of matching with the front wheel orientation piece, and a sixth elastic piece which can drive the front wheel orientation piece to move downward is arranged between the front wheel orientation piece and the front foot; when the front wheel orientation piece moves downward and matches with the first matching portion, the front wheel orientation mechanism is in a locked state; when the front wheel orientation piece is disengaged from the first matching portion, the front wheel orientation mechanism is unlocked.

16. The child stroller with convenient braking according to claim 15, Features: The rear-wheel orientation mechanism comprises a rear-wheel orientation piece connected to the lower side of the rear foot so as to be relatively movable up and down, a second matching part arranged on the rear wheel assembly and capable of matching with the rear-wheel orientation piece, and an eighth elastic piece is arranged between the rear-wheel orientation piece and the rear foot and capable of driving the rear-wheel orientation piece to move downward; when the rear-wheel orientation piece moves downward and matches with the second matching part, the rear-wheel orientation mechanism is in a locked state; when the rear-wheel orientation piece moves upward and disengages from the second matching part, the rear-wheel orientation mechanism is unlocked.

17. The child stroller with convenient braking according to claim 16, Features: The receiving seat is provided with a accommodating hole which opens downwards, and the upper sides of the rear wheel directional component and the front wheel directional component can be placed in the corresponding accommodating holes so as to be relatively movable up and down.

18. The child stroller with convenient braking according to any one of claims 13, 16-17, Features: The driver's lower side is connected to an actuating member that can rotate together with the driver, and a front wheel linkage device and a rear wheel linkage device are respectively arranged between the front wheel orientation mechanism, the rear wheel orientation mechanism and the actuating member; the actuating member includes a body, and the body is arranged in a cam shape, and the front wheel linkage device and the rear wheel linkage device are in contact with the outer surface of the cam-shaped body on one side facing the actuating member; during the driver's rotation and reversing process, the contact positions of the front wheel linkage device and the rear wheel linkage device with the outer surface of the cam-shaped body rotate and change, thereby changing the unlocking state or locking state of the front wheel orientation mechanism and the rear wheel orientation mechanism in a linkage manner.

19. The child stroller with convenient braking according to claim 18, Features: When the rider rotates to the rearward position, the rear wheel directional mechanism is linked to the locked state through the rear wheel linkage device, and the front wheel directional mechanism is linked to the unlocked state through the front wheel linkage device; when the rider rotates to the forward position, the rear wheel directional mechanism is linked to the unlocked state through the rear wheel linkage device, and the front wheel directional mechanism is linked to the locked state through the front wheel linkage device.

20. The child stroller with convenient braking according to claim 19, Features: The cam-shaped body and the front wheel linkage device and the rear wheel linkage device are configured so that, during the folding process of the child stroller, the rear wheel orientation mechanism remains in a locked state and the front wheel orientation mechanism remains in an unlocked state.

21. The child stroller with convenient braking according to claim 18, Features: The radius of the base circle of the cam-shaped body is smaller than the straight-line distance between the center of the base circle and the outer surface of the non-base circle part. When the rider is in a rearward position, one side of the front wheel linkage device contacts the outer surface of the base circle of the cam-shaped body, and the rear wheel linkage device contacts the outer surface of the non-base circle of the cam-shaped body; when the rider rotates to a forward position, the rear wheel linkage device contacts the outer surface of the base circle of the cam-shaped body, and the front wheel linkage device contacts the outer surface of the non-base circle of the cam-shaped body.

22. The child stroller with convenient braking according to claim 19, Features: The radius of the base circle of the cam-shaped body is smaller than the straight-line distance between the center of the base circle and the outer surface of the non-base circle part. When the rider is in a rearward position, one side of the front wheel linkage device contacts the outer surface of the base circle of the cam-shaped body, and the rear wheel linkage device contacts the outer surface of the non-base circle of the cam-shaped body; when the rider rotates to a forward position, the rear wheel linkage device contacts the outer surface of the base circle of the cam-shaped body, and the front wheel linkage device contacts the outer surface of the non-base circle of the cam-shaped body.

23. The child stroller with convenient braking according to claim 20, Features: The radius of the base circle of the cam-shaped body is smaller than the straight-line distance between the center of the base circle and the outer surface of the non-base circle part. When the rider is in a rearward position, one side of the front wheel linkage device contacts the outer surface of the base circle of the cam-shaped body, and the rear wheel linkage device contacts the outer surface of the non-base circle of the cam-shaped body; when the rider rotates to a forward position, the rear wheel linkage device contacts the outer surface of the base circle of the cam-shaped body, and the front wheel linkage device contacts the outer surface of the non-base circle of the cam-shaped body.

24. The child stroller with easy braking according to any one of claims 19 to 23, Features: The front wheel linkage device includes a front wheel driving member that can move relative to the front foot and / or the rear foot, a fifth elastic member arranged between the front wheel driving member and the front foot and capable of driving the front wheel driving member to move in the direction of the action member, a fourth connecting member connected to the front wheel driving member on the upper side, the fourth connecting member being connected to the front wheel directing member on the lower side, and the front wheel driving member being in contact with the outer surface of the cam-shaped body.

25. The child stroller with convenient braking according to claim 24, Features: The rear wheel linkage device includes a rear wheel driving member that can move up and down relative to the rear foot, a seventh elastic member arranged between the rear wheel driving member and the rear foot and capable of driving the rear wheel driving member to move in the direction of the action member, and a fifth connecting member connected to the rear wheel driving member on the upper side, and the lower side of the fifth connecting member is connected to the rear wheel directing member; the rear wheel driving member is in contact with the outer surface of the cam-shaped body.

26. The child stroller with convenient braking according to claim 25, Features: When the contact position between the front wheel driving member or the rear wheel driving member and the outer surface of the body rotates from the non-base circle outer surface of the cam-shaped body to the base circle outer surface, the front wheel driving member or the rear wheel driving member moves in the direction away from the corresponding front wheel or rear wheel, thereby pulling the corresponding fourth connecting member or the fifth connecting member and linking the corresponding front wheel orientation mechanism or the rear wheel orientation mechanism to unlock; when the contact position between the front wheel driving member or the rear wheel driving member and the outer surface of the body rotates from the base circle outer surface to the non-base circle outer surface, the front wheel driving member or the rear wheel driving member moves in the direction toward the corresponding front wheel or rear wheel, thereby releasing the pulling on the corresponding fourth connecting member or the fifth connecting member, and the corresponding front wheel orientation mechanism or the rear wheel orientation mechanism can be in a locked state.

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