Children's wheel set brake device

Abstract

The present invention discloses a stroller wheel brake device, comprising a first braking mechanism, a second braking mechanism, and a traction member. The first braking mechanism is disposed on the first wheel of the stroller and is used to lock or release the first wheel. The second braking mechanism is disposed on the second wheel of the stroller and is used to lock or release the second wheel. The traction member is connected between the first braking mechanism and the second braking mechanism so that the first braking mechanism and the second braking mechanism are linked to each other when locking or releasing, and the operating direction when locking is the same as the operating direction when releasing. The stroller wheel brake device of the present invention can be braked by stepping on one side and released by stepping on the other side, without the need to lift the pedal with the instep, ensuring that the user's shoe surface is clean. The present invention also discloses another stroller wheel brake device.

Description

Technical Field

[0001] The present invention relates to a baby carriage, in particular to a baby carriage wheel set braking device. Background Art

[0002] Conventional stroller wheel brakes are typically installed on both rear wheels, each equipped with a pedal. When one pedal is stepped on, the other pedal is activated simultaneously via a traction member, thereby simultaneously braking both rear wheels. To release the brakes, the user simply lifts one pedal with the instep of their foot to simultaneously release both rear wheels. While conventional stroller brakes achieve a dual-brake effect with one foot, lifting the pedal with the instep often stains the user's shoe, forcing the user to clean the shoe after each release, which is unpleasant. Summary of the Invention

[0003] The object of the present invention is to provide a child wheel brake device which can be braked by stepping on one side and released by stepping on the other side without lifting the pedal with the foot.

[0004] Another object of the present invention is to provide a child wheel brake device that can be braked by stepping on one side and released by stepping on the same side again without lifting the pedal with the foot.

[0005] In order to achieve the above-mentioned purpose, the stroller wheel set braking device provided by the present invention includes a first braking mechanism, a second braking mechanism and a traction member. The first braking mechanism is arranged on the first wheel of the stroller and is used to lock or release the first wheel. The second braking mechanism is arranged on the second wheel of the stroller and is used to lock or release the second wheel. The traction member is connected between the first braking mechanism and the second braking mechanism so that the first braking mechanism and the second braking mechanism are linked to each other when locking or releasing, and the operating direction when locking is the same as the operating direction when releasing.

[0006] Compared to the prior art, the present invention provides a first brake mechanism on the first wheel and a second brake mechanism on the second wheel, and utilizes a traction member to connect the first and second brake mechanisms. Furthermore, the locking and releasing directions are in the same direction. This makes locking and releasing operations simple and convenient, eliminating the need to lift the pedal with the instep, ensuring a clean shoe surface.

[0007] When the first brake mechanism locks the first wheel, it drives the second brake mechanism to lock the second wheel via the traction member. When the second brake mechanism releases the second wheel, it drives the first brake mechanism to release the first wheel via the traction member. This allows both wheels to be braked simultaneously by stepping on one side to lock, and both wheels to be released simultaneously by stepping on the other side to unlock. This is simple and convenient operation, and there is no need to lift the pedal with your foot.

[0008] Preferably, the first braking mechanism comprises a first axle pin, the first axle pin locks or releases the first wheel, and the second braking mechanism comprises a second axle pin, the second axle pin locks or releases the second wheel.

[0009] Specifically, the first braking mechanism further includes a first driving member driving the first shaft pin, the second braking mechanism further includes a second driving member driving the second shaft pin, and the traction member is connected between the first driving member and the second driving member.

[0010] Specifically, the first driving member is rotatably arranged, and a first driving inclined surface is provided on the side of the first driving member. The first braking mechanism also includes a first elastic member, and the first axle pin is slidably arranged so as to be inserted into the first wheel through the pushing of the first driving inclined surface when the first driving member rotates, or to be withdrawn from the first wheel under the elastic force of the first elastic member.

[0011] Specifically, one end of the first driving inclined surface is provided with a locking position, and the other end is provided with a releasing position.

[0012] Specifically, the first driving member is provided with an arc-shaped guide hole for guiding its rotation.

[0013] Specifically, the first driving member is provided with a first operating member for driving the first driving member to rotate.

[0014] Specifically, the second driving member is rotatably arranged, and a second driving inclined surface is provided on the side of the second driving member. The second braking mechanism also includes a second elastic member. The second axle pin is slidably arranged so as to be inserted into the second wheel through the pushing of the second driving inclined surface when the second driving member rotates, or to be withdrawn from the second wheel under the elastic force of the second elastic member.

[0015] Specifically, the second driving member is provided with a driving inclined hole, and the second braking mechanism further includes a third elastic member and a second operating member. The second operating member has an axle pin, which is slidably inserted into the driving inclined hole. The third elastic member provides an elastic force to reset the second driving member.

[0016] Specifically, one end of the second driving inclined surface is provided with a locking position, and the other end is provided with a releasing position.

[0017] Specifically, when the first brake mechanism locks the first wheel, the first brake mechanism drives the second brake mechanism to lock the second wheel, or when the first brake mechanism releases the first wheel, the first brake mechanism drives the second brake mechanism to release the second wheel.

[0018] Specifically, the first braking mechanism also includes a locking hook, the first driving member is provided with a first guide groove and a second guide groove, and a locking position and a release position are provided between the first guide groove and the second guide groove. One end of the locking hook is fixed to the frame of the baby carriage, and the other end of the locking hook is slidably provided in either the first guide groove or the second guide groove; when the first driving member rotates and pushes the first axle pin to lock the first wheel, the locking hook slides from the first guide groove to the locking position, and when the first driving member rotates and pushes the first axle pin to release the first wheel, the locking hook slides from the locking position to the release position.

[0019] The frame of the baby carriage is provided with a fixing hole, and one end of the clamping hook is bent and inserted into the fixing hole. The fixing hole can not only limit the position of one end of the clamping hook, but also ensure that the clamping hook can rotate a certain angle when sliding in each guide groove, thereby enhancing the flexibility of the clamping hook.

[0020] Specifically, the first driving member is further provided with a third guide groove and a fourth guide groove, both ends of the third guide groove are connected to the first guide groove and the engaging position, and both ends of the fourth guide groove are connected to the engaging position and the second guide groove.

[0021] Specifically, a guide slope is provided between the fourth guide groove and the second guide groove to guide the engaging hook toward the second guide groove. Because the engaging hook may deform and the walls of the fourth guide groove may collapse when sliding upward in the fourth guide groove to release the lock, the provision of the guide slope allows the engaging hook to automatically and quickly slide into the second guide groove, thereby avoiding deformation of the engaging hook and collapse of the walls of the fourth guide groove, and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 1 is a structural diagram of a children's wheel set brake device according to a first embodiment of the present invention.

[0023] Figure 2 1 is a structural diagram of the first brake mechanism according to the first embodiment of the present invention.

[0024] Figure 3 2 is a structural diagram of the first driving member of the first embodiment of the present invention.

[0025] Figure 4 2 is a structural diagram of the second braking mechanism of the first embodiment of the present invention.

[0026] Figure 5 2 is a structural diagram of the second driving member of the first embodiment of the present invention.

[0027] Figure 6 This is a state diagram of the first brake mechanism of the first embodiment of the present invention during braking.

[0028] Figure 7 This is a structural diagram of the second brake mechanism of the first embodiment of the present invention when braking.

[0029] Figure 8 2 is a structural diagram of a children's wheel set brake device according to a second embodiment of the present invention.

[0030] Figure 9 2 is another structural diagram of the children's wheel set brake device according to the second embodiment of the present invention.

[0031] Figure 10 It is a perspective view of a first braking mechanism according to a second embodiment of the present invention.

[0032] Figure 11 It is a side view of a first brake mechanism according to a second embodiment of the present invention.

[0033] Figure 12 2 is a structural diagram of the first driving member of the second embodiment of the present invention.

[0034] Stroller wheel assembly brake device 100, first rear wheel 101, second rear wheel 102, first rear wheel seat 103, second rear wheel seat 104, first braking mechanism 1, second braking mechanism 2, traction member 3, first axle pin 11, first driving member 12, first elastic member 13, second axle pin 21, second driving member 22, second elastic member 23, second operating member 24, third elastic member 25, first driving inclined surface 121, locking position 122, release position 123, arc-shaped guide hole 124, first operating member 125, driving inclined hole 221, second driving inclined surface 222, locking position 223, release position 224, axle pin 241.

[0035] A baby wheel set brake device 100', a first brake mechanism 1', a second brake mechanism 2', a pulling member 3', a first axle pin 11', a first driving member 12', a locking hook 13', a first elastic member 14', a first guide groove 121', a second guide groove 122', a locking position 123', a release position 124', a third guide groove 125', a fourth guide groove 126', a first driving inclined surface 127', and a pedal 128'. DETAILED DESCRIPTION

[0036] In order to explain the technical content, structural features and achieved effects of the present invention in detail, the following is a detailed description in conjunction with the embodiments and the accompanying drawings.

[0037] like Figure 1 As shown in the figure, the structure of the children's wheel set brake device 100 according to the first embodiment of the present invention is shown.

[0038] The present invention relates to a stroller wheel assembly brake device 100, which is mounted on the rear side of a stroller. The device comprises a first brake mechanism 1, a second brake mechanism 2, and a traction member 3. The first brake mechanism 1 is mounted on a first rear wheel seat 103 of the stroller frame and is used to lock the first rear wheel 101. The second brake mechanism 2 is mounted on a second rear wheel seat 104 of the stroller frame and is used to release the second rear wheel 102. The traction member 3 is connected between the first brake mechanism 1 and the second brake mechanism 2, so that the first and second brake mechanisms are linked when locking or releasing the wheel. When the first brake mechanism 1 locks the first rear wheel 101, the second brake mechanism 2 is driven to lock the second rear wheel 102, or when the second brake mechanism 2 releases the second rear wheel 102, the first brake mechanism 1 is driven to release the first rear wheel 101. The first brake mechanism 1 operates in the same direction when locking as the second brake mechanism 2 when releasing the wheel.

[0039] like Figures 2 to 4 As shown, the first brake mechanism 1 includes a first axle pin 11, a first driving member 12 that drives the first axle pin 11, and a first elastic member 13, which is a compression spring. The first axle pin 11 is used to lock the first rear wheel 101. The second brake mechanism 2 includes a second axle pin 21 and a second driving member 22 that drives the second axle pin 21, which is used to lock the second rear wheel 102. The traction member 3 is connected between the first driving member 12 and the second driving member 22. Specifically, the first driving member 12 is rotatably mounted on the first rear wheel seat 103, and a first driving inclined surface 121 is provided on the side of the first driving member 12. The first axle pin 11 is slidably mounted on the first rear wheel seat 103, with one end slidably abutting the first driving inclined surface 121. The first elastic member 13 is disposed within the first rear wheel seat 103 and provides an elastic force that forces the first axle pin 11 into the first rear wheel 101. When the first driving member 12 rotates, the first axle pin 11 can be pushed into the first rear wheel 101 by the first driving inclined surface 121, or can be released from the first rear wheel 101 due to the elastic force of the first elastic member 13. One end of the first driving inclined surface 121 is provided with a locking position 122, and the other end is provided with a release position 123. When the first driving member 12 is positioned horizontally, the locking position 122 is located at the upper position of the first driving member 12, while the release position 123 is located at the lower position of the first driving member 12. When one end of the first axle pin 11 is inserted into the first rear wheel 101, the other end of the first axle pin 11 is located at the locking position 122. When one end of the first axle pin 11 is released from the first rear wheel 101, the other end of the first axle pin 11 is located at the release position 123. The first driving member 12 is provided with an arcuate guide hole 124 to guide its rotation. A guide post is provided within the first rear wheel seat 103 and slides into the arcuate guide hole 124. The first driving member 12 is further provided with a first operating member 125 for the convenience of the user stepping on it.

[0040] See also Figure 4 and Figure 5The second driving member 22 is rotatably mounted on the second rear wheel seat 104 and is provided with a driving inclined hole 221. The second braking mechanism 2 further includes a third elastic member 23 and a second operating member 24. The second operating member 24 includes an axle pin 241 that is slidably inserted into the driving inclined hole 221. The third elastic member 23 is disposed between the second rear wheel seat 104 and the second driving member 22 and provides an elastic force that causes the second driving member 22 to rotate and return to its original position. The third elastic member 23 is a compression spring. Specifically, a second driving inclined surface 222 is provided on the side of the second driving member 22. The second braking mechanism 2 further includes a second elastic member 25. The second axle pin 21 is slidably mounted on the second rear wheel seat 104. The second elastic member 25 is disposed on the second rear wheel seat 104 and is sleeved on the second axle pin 21 to provide an elastic force that causes the second axle pin 21 to return to its original position. The second axle pin 21 can be inserted into the second rear wheel 102 by being pushed by the second driving inclined surface 222 when the second driving member 22 rotates, or can be withdrawn from the second rear wheel 102 due to the elastic force of the second elastic member 25. More specifically, the second driving inclined surface 222 has a locking position 223 at one end and a release position 224 at the other end. When the second driving member 22 is positioned horizontally, the locking position 223 is located at the upper position of the second driving member 22, while the release position 224 is located at the lower position of the second driving member 22. When one end of the second axle pin 21 is inserted into the second rear wheel 102, the other end of the second axle pin 21 is located at the locking position 222. When one end of the second axle pin 21 is withdrawn from the second rear wheel 102, the other end of the second axle pin 21 is located at the release position 223.

[0041] Combining the above and Figure 6 and Figure 7 The working principle of the children's wheel set brake device 100 of this embodiment is described in detail below:

[0042] When braking is required, the pedal on the first driving member 12 is depressed downward, causing the first driving member 12 to rotate. The first driving bevel 121 then slides relative to the first axle pin 11, causing the first axle pin 11 to slide from the release position 123 along the first driving bevel 121 to the lock position 122. During this process, the first driving bevel 121 drives the first axle pin 11 into the first rear wheel 101, thereby braking the first rear wheel 101. As the first driving member 12 rotates, the first driving member 12 pulls the traction member 3, which in turn rotates the second driving member 22. The second driving bevel 222 of the second driving member 22 drives the second axle pin 21 into the second rear wheel 102, and the second axle pin 21 slides from the release position 224 along the second driving bevel 222 to the lock position 223. At this point, the first and second rear wheels 101, 102, are simultaneously locked.

[0043] To release the wheel, the user presses down on the second operating member 24 on the other side, causing it to move downward. The pin 241 on the second operating member 24 slides in the inclined drive hole 221, driving the second driving member 22 to rotate. This in turn causes the second driving inclined surface 222 to rotate, and under the elastic force of the second elastic member 25, the second pin 21 slides from the locked position 223 to the unlocked position 224. The other end of the second pin 21 exits the second rear wheel 102. Simultaneously, the second driving member 22 rotates the first driving member 12 via the traction member 3, causing the first driving inclined surface 121 to rotate. Under the elastic force of the first elastic member 13, the first pin 11 slides from the locked position 122 to the unlocked position 123. The other end of the first pin 11 exits the first rear wheel 101. At this point, the first and second rear wheels 101, 102, are simultaneously unlocked.

[0044] Compared with the prior art, the present invention provides a first brake mechanism 1 on the first rear wheel 101, a second brake mechanism 2 on the second rear wheel 102, and connects the first brake mechanism 1 and the second brake mechanism 2 by a traction member 3. Thus, when the first brake mechanism 1 locks the first rear wheel 101, the second brake mechanism 2 can be driven to lock the second rear wheel 102, or when the second brake mechanism 2 releases the second rear wheel 102, the first brake mechanism 1 can be driven to release the first rear wheel 101, thereby achieving the effect of braking both rear wheels at the same time by stepping on one side to lock, and releasing both rear wheels at the same time by stepping on the other side to unlock. The operation is simple and convenient, and there is no need to lift the pedal with the instep, thereby ensuring that the user's shoe surface is clean.

[0045] like Figures 8 to 12 As shown in the figure, the structure of a children's wheel set brake device 100' according to the second embodiment of the present invention is shown.

[0046] See also Figures 8 to 10 The stroller wheel set brake device 100' of this embodiment includes a first brake mechanism 1', a second brake mechanism 2' and a traction member 3'. The first brake mechanism 1' is provided on the first rear wheel 101 of the stroller and is used to lock or release the first rear wheel 101. The second brake mechanism 2' is provided on the second rear wheel seat 104 of the stroller frame and is used to lock or release the second rear wheel 102. The traction member 3' is connected between the first brake mechanism 1' and the second brake mechanism 2', so that the first brake mechanism 1' and the second brake mechanism 2' are linked to each other when locking or releasing. When the first brake mechanism 1' locks the first rear wheel 101, it drives the second brake mechanism 2' to lock the second rear wheel 102. When the first brake mechanism 1' releases the first rear wheel 101, it drives the second brake mechanism 2' to release the second rear wheel 102. The operating direction of the first brake mechanism 1' when locking is the same as the operating direction of the first brake mechanism 1' when releasing. Specifically,

[0047] For example Figures 9 to 12 As shown, the first brake mechanism 1' includes a first axle pin 11', a first drive member 12' that drives the first axle pin 11', and a locking hook 13'. The first axle pin 11' is used to lock or release the first rear wheel 101. The second brake mechanism 2' includes a second axle pin and a second drive member that drives the second axle pin. The second axle pin and the second drive member that drive the second axle pin in this embodiment are similar in structure to the first axle pin 11 and the first drive member 12 in the first embodiment, and their description will not be repeated here. The second axle pin is used to lock or release the second rear wheel 102. The traction member 3' is connected between the first drive member 12' and the second drive member. The first drive member 12' is provided with a first guide groove 121' and a second guide groove 122'. A locking position 123' and a release position 124' are provided between the first guide groove 121' and the second guide groove 122'. The first driving member 12' further includes a third guide slot 125' and a fourth guide slot 126'. The third guide slot 125''s ends connect to the first guide slot 121' and the engaging portion 123', while the fourth guide slot 126'''s ends connect to the engaging portion 123' and the second guide slot 122'. The first guide slot 121', third guide slot 125', engaging portion 123', fourth guide slot 126', second guide slot 122', and release portion 124' are sequentially connected to form a closed loop. A V-shaped structure is formed between the third guide slot 125', engaging portion 123', and fourth guide slot 126' to prevent the engaging hook 13' from accidentally disengaging from the engaging portion 123'. One end of the hook 13' is fixed to the first rear wheel seat 103 of the stroller, and the other end of the hook 13' can slide sequentially through the first guide slot 121', the third guide slot 125', the engaging position 123', the fourth guide slot 126', the second guide slot 122', and the release position 124'. When the first driving member 12' rotates and pushes the first axle pin 11' to lock the first rear wheel 101, the hook 13' slides from the first guide slot 121' to the engaging position 123'. When the first driving member 12' rotates and pushes the first axle pin 11' to release the first rear wheel 101, the hook 13' slides from the engaging position 123' to the release position 124'. Furthermore, the first rear wheel seat 103 of the stroller frame is provided with a fixing hole 1031, into which one end of the hook 13' is bent and inserted. The fixing hole 1031 can not only limit one end of the locking hook 13 ′, but also ensure that the locking hook 13 ′ can rotate a certain angle when sliding in each guide groove, thereby enhancing the flexibility of the locking hook 13 ′ and preventing the locking hook 13 ′ from being deformed.

[0048] In addition, Figure 11As shown, a guide slope 129' is provided between the fourth guide groove 126' and the second guide groove 122' to guide the engaging hook 13' toward the second guide groove 122'. Since the engaging hook 13' may deform when sliding upward in the fourth guide groove 126' to release the lock, and the groove wall of the fourth guide groove 126' may also be crushed, the provision of the guide slope 129' allows the engaging hook 13' to automatically and quickly slide into the second guide groove 122', thereby avoiding deformation of the engaging hook 13' and crushing of the groove wall of the fourth guide groove 126' and extending its service life.

[0049] See also Figure 9 and Figure 12 More specifically, the first braking mechanism 1' further includes a first elastic member 14', which is a compression spring. The first elastic member 14' is disposed in the first rear wheel seat 103 and is sleeved on the first axle pin 11'. A first driving inclined surface 127' is provided on the side of the first driving member 12'. The first axle pin 11' is slidingly disposed in the first rear wheel seat 103 so that when the first driving member 12' rotates, it is pushed into the first rear wheel 101 by the first driving inclined surface 127', or withdraws from the first rear wheel 101 under the elastic force of the first elastic member 14'. The first driving inclined surface 127' of this embodiment also has a structure similar to the locking position 122 at one end and the unlocking position 123 at the other end of the first driving inclined surface 121 of the first embodiment, thereby positioning the first axle pin 11', which will not be repeated here. The first driving member 12' is also provided with a pedal 128' for stepping on.

[0050] The second braking mechanism also includes a second elastic member and a third elastic member. The specific structure of the second braking mechanism of the second embodiment is not shown in the drawings, but its structure is the same as that of the first embodiment, and reference can be made to the drawings of the first embodiment. The third elastic member is disposed within the second rear wheel seat 104 and can provide an elastic force to rotate and reset the second driving member. The second elastic member is a compression spring and is sleeved on the second axle pin. A second driving inclined surface is provided on the side of the second driving member, and the second axle pin is slidably disposed on the second rear wheel seat 104 so that when the second driving member rotates, it is pushed into the second rear wheel 102 by the second driving inclined surface, or withdrawn from the second rear wheel 102 under the elastic force of the second elastic member. More specifically, one end of the second driving inclined surface is provided with a locking position, and the other end is provided with a release position 124'. When the second driving member is placed horizontally, the locking position is located at the high position of the second driving member, and the release position 124' is at the low position of the second driving member; when one end of the second axle pin is inserted into the second rear wheel 102, the other end of the second axle pin is located at the locking position, and when one end of the second axle pin is withdrawn from the second rear wheel 102, the other end of the second axle pin is located at the release position 124'.

[0051] Combining the above and Figures 8 to 12The working principle of the baby wheel set brake device 100' of this embodiment is described in detail below:

[0052] When braking is required, the pedal on the first driving member 12' is pressed downward, causing the first driving member 12' to rotate. The engaging hook 13' then slides from the first guide slot 121' to the third guide slot 125', and then from the third guide slot 125' to the locked engagement position 123'. During this process, the first driving bevel 127' slides relative to the first axle pin 11', causing the first axle pin 11' to slide from the unlocked position 124' along the first driving bevel 127' to the locked position. Simultaneously, the first driving bevel 127' drives the first axle pin 11' to insert into the first rear wheel 101, thereby braking the first rear wheel 101. Furthermore, as the first driving member 12' rotates, the first driving member 12' pulls the traction member 3', which in turn rotates the second driving member. The second driving bevel of the second driving member drives the second axle pin to insert into the second rear wheel 102, and the second axle pin slides from the unlocked position 124' along the second driving bevel to the locked position. At this time, the first rear wheel 101 and the second rear wheel 102 are in a locked state at the same time.

[0053] To release the lock, the user steps downward on the pedal of the first driving member 12' again, causing the first driving member 12' to rotate. The engaging hook 13' then moves from the engaging position 123' to the fourth guide slot 126'. The engaging hook 13' then enters the guide slope 129' from the fourth guide slot 126'. Guided by the guide slope 129', the engaging hook 13' slides toward the second guide slot 122' and from there to the release position 124'. During this process, the first driving member 12' rotates the first driving slope 127', and under the elastic force of the first elastic member 14', the first axle pin 11' slides from the locking position to the release position 124'. The other end of the first axle pin 11' then exits the first rear wheel 101. At the same time, the first driving member 12' drives the second driving member to rotate via the traction member 3'. The second driving member then drives the second driving inclined surface to rotate. Under the elastic force of the second elastic member, the second axle pin slides from the locked position to the unlocked position 124'. The other end of the second axle pin is now clear of the second rear wheel 102. At this point, the first rear wheel 101 and the second rear wheel 102 are simultaneously unlocked.

[0054] Compared with the prior art, the present invention provides a first brake mechanism 1' on the first rear wheel 101, a second brake mechanism 2' on the second rear wheel 102, and connects the first brake mechanism 1' and the second brake mechanism 2' using a traction member 3', so that when the first brake mechanism 1' locks the first rear wheel 101, the second brake mechanism 2' can be driven to lock the second rear wheel 102, or when the first brake mechanism 1' releases the first rear wheel 101, the second brake mechanism 2' can be driven to release the second rear wheel 102, thereby achieving the effect of locking or releasing the two rear wheels at the same time by stepping on one side. The operation is simple and convenient, and there is no need to lift the pedal with the instep, ensuring that the user's shoe surface is clean.

[0055] The above disclosure is merely a preferred embodiment of the present invention and certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A children's wheel brake device, characterized by: The invention comprises a first braking mechanism, a second braking mechanism and a traction member, wherein the first braking mechanism is provided on a first wheel of the baby carriage and is used to lock or release the first wheel, and the second braking mechanism is provided on a second wheel of the baby carriage and is used to lock or release the second wheel; the traction member is connected between the first braking mechanism and the second braking mechanism so that the first braking mechanism and the second braking mechanism are linked to each other when locking or releasing, and the operating direction when locking is the same as the operating direction when releasing. When the first brake mechanism locks the first wheel, the first brake mechanism drives the second brake mechanism to lock the second wheel through the traction member; when the second brake mechanism releases the second wheel, the second brake mechanism drives the first brake mechanism to release the first wheel through the traction member. The second braking mechanism includes a second axle pin, the second axle pin locks or releases the second wheel, and the second braking mechanism also includes a second driving member that drives the second axle pin. The second driving member is rotatably provided, a second driving inclined surface is provided on the side of the second driving member, and the second shaft pin is slidably provided so as to be inserted into the second wheel by being pushed by the second driving inclined surface when the second driving member rotates. In which, the second driving member is provided with a driving inclined hole, and the second braking mechanism also includes a second operating member, the second operating member has an axle pin, and the axle pin is slidably inserted into the driving inclined hole, so that when the second operating member moves downward, the axle pin on the second operating member slides in the driving inclined hole and drives the second driving member to rotate.

2. The children's wheel brake device according to claim 1, characterized in that: The first braking mechanism includes a first axle pin, and the first axle pin locks or releases the first wheel.

3. The braking device for a baby wheel set according to claim 2, characterized in that: The first braking mechanism further includes a first driving member for driving the first shaft pin, and the traction member is connected between the first driving member and the second driving member.

4. The children's wheel brake device according to claim 3, characterized in that: The first driving member is rotatably arranged, and a first driving inclined surface is provided on the side of the first driving member. The first braking mechanism also includes a first elastic member. The first axle pin is slidably arranged so as to be inserted into the first wheel through the pushing of the first driving inclined surface when the first driving member rotates, or to be withdrawn from the first wheel under the elastic force of the first elastic member.

5. The braking device for a baby wheel set according to claim 4, characterized in that: One end of the first driving inclined surface is provided with a locking position, and the other end is provided with a releasing position.

6. The braking device for a baby wheel set according to claim 4, characterized in that: The first driving member is provided with an arc-shaped guide hole for guiding its rotation.

7. The braking device for a baby wheel set according to claim 4, characterized in that: The first driving member is provided with a first operating member for driving the first driving member to rotate.

8. The braking device for a baby wheel set according to claim 1, characterized in that: The second braking mechanism further includes a second elastic member, and the second axle pin can withdraw from the second wheel under the elastic force of the second elastic member.

9. The children's wheel brake device according to claim 1, characterized in that: The second braking mechanism further includes a third elastic member, which provides an elastic force to reset the second driving member.

10. The braking device for a baby wheel set according to claim 8, characterized in that: One end of the second driving inclined surface is provided with a locking position, and the other end is provided with a releasing position.

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