Brake device and baby carriage

Abstract

The utility model discloses a brake device and a baby carriage. The brake device comprises a wheel support assembly, two locking assemblies and a control assembly. The wheel support assembly comprises side frames and a connecting frame, the two side frames are arranged side by side left and right, the connecting frame is arranged between the two side frames, the two ends of the connecting frame are fixedly connected with the side frames on the corresponding sides, and wheels are rotationally arranged at the lower ends of the two side frames; the two locking assemblies are arranged on the two side frames correspondingly and can lock or unlock rotation of the two wheels. The control assembly comprises a pedal piece and two side push rods, and the two side push rods are movably arranged on the connecting frame in the left-right direction and can drive the two locking assemblies to lock or unlock rotation of the two wheels in a one-to-one correspondence mode. The pedal piece is rotationally arranged on the connecting frame and can drive the two side push rods to move in the left-right direction.

Description

Technical Field

[0001] The utility model relates to the field of baby carriages, in particular to a brake device and a baby carriage. Background Art

[0002] Strollers on the market are usually equipped with a brake device for locking or unlocking the wheels of the stroller. Some existing strollers have a brake device that can lock or unlock two wheels at once. The brake device includes a wheel support assembly, a locking assembly, and a control assembly. The wheel support assembly includes a connecting frame and two side frames. The two ends of the connecting frame are respectively rotatably connected to the two side frames. The lower ends of the two side frames are provided with wheels, and the middle part of the connecting frame is provided with a pedal. The connecting frame and the pedal also serve as control components. When the pedal drives the connecting frame to rotate, the locking assembly can be used to lock or unlock the wheels. However, in the above structure, the connection strength between the side frames and the connecting frame is insufficient, resulting in insufficient overall strength of the wheel support assembly. When the stroller is loaded, there is a risk of structural shaking, which affects the safety of the stroller. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a brake device that improves the overall strength of the wheel bracket assembly and improves the safety of the baby stroller.

[0004] The utility model also provides a baby carriage with the above-mentioned brake device.

[0005] According to the first embodiment of the present invention, the brake device includes a wheel support assembly, two locking assemblies, and a control assembly. The wheel support assembly includes a side frame and a connecting frame, wherein two side frames are provided and arranged side by side on the left and right sides, the connecting frame is provided between the two side frames, and both ends of the connecting frame are fixedly connected to the side frames on the corresponding sides, and wheels are rotatably provided at the lower ends of the two side frames; two locking assemblies are respectively provided on the two side frames and can lock or unlock the rotation of the two wheels; the control assembly includes a foot pedal and two side push rods, the two side push rods are movably provided on the connecting frame in the left and right directions and can correspondingly drive the two locking assemblies to lock or unlock the rotation of the two wheels, and the foot pedal is rotatably provided on the connecting frame and can drive the two side push rods to move in the left and right directions.

[0006] According to the braking device of the embodiment of the first aspect of the present invention, there are at least the following beneficial effects: the connecting frame is fixedly connected to the two side frames, and the control component drives the side push rod to move left and right through the rotation of the pedal member, so that the locking component locks or unlocks the rotation of the two wheels. Since the locking component is linked by providing a push rod instead of the connecting frame, the connecting frame can be fixedly connected to the side frame, thereby improving the overall strength of the wheel bracket assembly and improving the safety of the baby carriage.

[0007] The cam is secured to the outside of the chassis and is adapted to engage the driver for securing the chassis to the chassis, the cam being secured to the outside of the chassis and adapted to engage the driver for securing the chassis to the chassis.

[0008] According to some embodiments of the present invention, a first elastic member is provided between the side push rod and the connecting frame, and the first elastic member is used to apply a force to the side push rod toward the footrest member along the left and right directions.

[0009] According to some embodiments of the present invention, the locking assembly includes a locking plate, a locking member and a linkage mechanism. The locking plate is coaxially arranged on the wheel and the two rotate synchronously. A locking fitting portion is provided on the outer periphery of the locking plate. The locking member is movably arranged on the side frame and can stop or disengage from the locking fitting portion. When the side push rod moves in the left and right directions, the corresponding locking member can be linked to move through the linkage mechanism.

[0010] According to some embodiments of the present invention, the side frame includes an upper frame and a lower frame, the two upper frames are connected by the connecting frame, the two lower frames are rotatably arranged on the upper frame in a one-to-one correspondence, the lower frame can be locked or unlocked relative to the corresponding upper frame, the rotation axis of the lower frame is arranged vertically, and the lower frame is provided with the wheels; the linkage mechanism includes a tilted top member, a transmission slider, a traction rope, an unlocking elastic member and a locking elastic member, the transmission slider is slidably arranged on the lower frame, and the transmission slider is connected to the locking member through the traction rope. Then, the locking member is slidably arranged on the lower frame, the unlocking elastic member is arranged between the transmission slider and the lower frame and is used to apply a force to make the locking member move away from the locking matching part, the locking elastic member is arranged between the locking member and the lower frame and is used to apply a force to make the locking member approach the locking matching part, the elastic force of the unlocking elastic member is greater than the elastic force of the locking elastic member, the inclined top member is vertically slidably arranged on the upper frame, and the side push rod can push the transmission slider and compress the unlocking elastic member through the inclined top member.

[0011] According to some embodiments of the present invention, the inclined top piece is vertically slidably arranged on the upper frame and is located on the radial side of the rotation axis of the lower frame, and the transmission slider is vertically slidably arranged on the lower frame and is located on the radial side of the rotation axis of the lower frame. The lower frame can rotate relative to the upper frame to a position where the inclined top piece and the transmission slider are relative or staggered.

[0012] According to some embodiments of the present invention, the linkage mechanism further includes a second elastic member, which is disposed between the tilted lift member and the upper frame and is used to apply a force to move the tilted lift member away from the transmission slider.

[0013] According to some embodiments of the present invention, the lower frame includes a wheel frame, a shock-absorbing frame and a shock-absorbing structure, the wheel frame is rotatably connected to the lower part of the shock-absorbing frame, the wheel is rotatably connected to the wheel frame, the shock-absorbing structure is connected between the wheel frame and the shock-absorbing frame, the transmission slider and the unlocking elastic member are arranged on the shock-absorbing frame, the locking member and the locking elastic member are arranged on the wheel frame, the outer periphery of the traction rope is provided with a flexible tube, and the two ends of the flexible tube are respectively fixed to the shock-absorbing frame and the wheel frame.

[0014] According to some embodiments of the present invention, a first plug-in block is provided at one end of the flexible tube, a first slot is provided at the shock absorber frame, and the first plug-in block is inserted into the first slot; a second plug-in block is provided at the other end of the flexible tube, a second slot is provided at the wheel frame, and the second plug-in block is inserted into the second slot.

[0015] The baby carriage according to the second embodiment of the present invention includes the above-mentioned brake device.

[0016] The baby carriage according to the embodiment of the second aspect of the present utility model has at least the following beneficial effects: due to the adoption of the above-mentioned braking device, the overall strength and safety of the baby carriage are improved.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 This is a three-dimensional schematic diagram of a baby carriage according to an embodiment of the present invention;

[0020] Figure 2 For the embodiment of the utility model Figure 1 A local enlarged schematic diagram of point A;

[0021] Figure 3 For the embodiment of the utility model Figure 1 A cross-sectional schematic diagram in the BB direction;

[0022] Figure 4 A three-dimensional schematic diagram of a footrest member according to an embodiment of the present utility model;

[0023] Figure 5 This is an exploded schematic diagram of a partial structure of an embodiment of the present utility model.

[0024] Reference numerals:

[0025] Wheel support assembly 100, side frame 110, upper frame 111, lower frame 112, wheel frame 1121, shock absorbing frame 1122, shock absorbing structure 1123, second slot 1124, connecting frame 120, wheel 130;

[0026] Locking assembly 200, locking plate 210, locking mating portion 211, locking member 220, tilting member 230, transmission slider 240, traction rope 250, unlocking elastic member 260, locking elastic member 270, second elastic member 280, flexible tube 290, first plug block 291, second plug block 292;

[0027] Control assembly 300 , pedal member 310 , locking slot 311 , guide surface 312 , unlocking slot 313 , side push rod 320 , push block 321 , first elastic member 330 . DETAILED DESCRIPTION

[0028] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of this utility model, "a plurality" means more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] Strollers on the market are often equipped with a brake device for locking or unlocking the stroller's wheels 130. Some existing strollers have brake devices that can lock or unlock two wheels 130 at once. These brake devices include a wheel support assembly 100, a locking assembly 200, and a control assembly 300. The wheel support assembly 100 includes a connecting frame 120 and two side frames 110. The connecting frame 120 is rotatably connected to the two side frames 110 at both ends. The lower ends of the two side frames 110 are provided with wheels 130, and the middle portion of the connecting frame 120 is provided with a footrest 310. The connecting frame 120 and the footrest 310 also function as the control assembly 300. When the footrest 310 rotates the connecting frame 120, the locking assembly 200 can be used to lock or unlock the wheels 130. However, with this structure, the connection strength between the side frames 110 and the connecting frame 120 is insufficient, resulting in insufficient overall strength of the wheel support assembly 100. This poses a risk of structural sway when the stroller is loaded, compromising safety.

[0033] Reference Figures 1 to 5 The brake device of an embodiment of the present invention includes a wheel support assembly 100, two locking assemblies 200, and a control assembly 300. The wheel support assembly 100 includes a side frame 110 and a connecting frame 120. Two side frames 110 are provided and arranged side by side on the left and right sides. The connecting frame 120 is arranged between the two side frames 110. The two ends of the connecting frame 120 are fixedly connected to the side frames 110 on the corresponding sides. The lower ends of the two side frames 110 are rotatably provided with wheels 130. The two locking assemblies 200 are respectively provided on the two side frames 110 and can lock or unlock the rotation of the two wheels 130. The control assembly 300 includes a footrest 310 and two side push rods 320. The two side push rods 320 are movably provided on the connecting frame 120 in the left-right direction and can correspondingly drive the two locking assemblies 200 to lock or unlock the rotation of the two wheels 130. The footrest 310 is rotatably provided on the connecting frame 120 and can drive the two side push rods 320 to move in the left-right direction.

[0034] The connecting frame 120 is fixedly connected to the two side frames 110. The control assembly 300 drives the side push rod 320 to move left and right by rotating the pedal 310, so that the locking assembly 200 locks or unlocks the rotation of the two wheels 130. Since the locking assembly 200 is linked by providing a push rod instead of the connecting frame 120, the connecting frame 120 can be fixedly connected to the side frame 110, thereby improving the overall strength of the wheel bracket assembly 100 and improving the safety of the stroller.

[0035] In the embodiment, the connecting frame 120 is a tube body arranged in the left and right directions, the side push rod 320 is slidably penetrated in the tube body, the side push rod 320 is provided with a push block 321, the tube wall of the tube body is provided with a first clearance through hole, the push block 321 is penetrated through the first clearance through hole and extends to the outside of the connecting frame 120, the pedal member 310 is rotatably sleeved on the outer periphery of the connecting frame 120, and the left and right sides of the pedal member 310 are sequentially provided with a locking groove 311, a guide surface 312 and an unlocking groove around its rotation axis. 313, the left-right distance between the two unlocking grooves 313 is smaller than the left-right distance between the two locking grooves 311, and the two side push rods 320 are respectively placed on the left and right sides of the foot pedal 310. The foot pedal 310 has a locking position and an unlocking position. In the locking position, the pushing block 321 is located in the corresponding locking groove 311; in the unlocking position, the pushing block 321 is located in the corresponding unlocking groove 313; the pushing block 321 can switch between the locking groove 311 and the unlocking groove 313 along the guide surface 312.

[0036] When the connecting frame 120 is fixedly connected to the side frame 110, the pedal member 310 mounted on the outer periphery of the connecting frame 120 is rotated by the user. Since the distance between the two unlocking grooves 313 is smaller than the distance between the two locking grooves 311, the rotation of the pedal member 310 can push the push block 321 through the guide surface 312 to drive the side push rod 320 to move left and right. In this way, when the connecting frame 120 is stationary, the rotation of the pedal member 310 can drive the side push rod 320 to move left and right, thereby controlling the locking or unlocking of the wheel 130 by the locking assembly 200. The structure is simple.

[0037] In this embodiment, a first elastic member 330 is disposed between the side push rods 320 and the connecting frame 120. The first elastic member 330 is used to apply a force in the left-right direction to the side push rods 320 toward the footrest 310. Specifically, the first elastic member 330 is a spring. When the wheels 130 are unlocked, the push blocks 321 of the two side push rods 320 are both located in the unlocking slots 313. When the user needs to lock the wheel 130, the pedal 310 is rotated, the pushing block 321 disengages from the unlocking groove 313 and is pushed by the guide surface 312, causing the two side push rods 320 to move away from each other, ultimately causing the locking assembly 200 to lock the corresponding wheel 130. During this period, the first elastic member 330 is elastically compressed, and finally the pushing block 321 enters and remains in the locking groove 311, and the wheel 130 remains locked. When the user needs to unlock the wheel 130, the pedal 310 is rotated in the opposite direction, the pushing block 321 can disengage from the locking groove 311, and the first elastic member 330 relaxes, pulling the two pushing rods closer together, causing the pushing block 321 to move along the guide surface 312 into the unlocking groove 313, and finally linking to the locking assembly 200, at this time, the wheel 130 remains unlocked. The above structure requires the cooperation of the pushing surface and the first elastic member 330 to enable the side push rod 320 to complete the left and right sliding, which is effective and simple and labor-saving. It is conceivable that the pedal member 310 can also use other methods to make the side push rod 320 slide left and right. For example, the pedal member 310 is provided with a strip hole, and the two ends of the strip hole respectively form a locking groove 311 and an unlocking groove 313, and the middle section of the strip hole forms a guide surface 312. By rotating the pedal member 310, the middle section of the strip hole pushes the pushing block 321 to drive the side push rod 320 to complete the left and right movement, and the structure is relatively simple; or the pedal member 310 is provided with an internal thread groove, and the pushing block 321 is slidably set in the internal thread groove. When the pedal member 310 rotates, the side wall of the internal thread groove pushes the pushing block 321 to make the side push rod 320 slide left and right.

[0038] Specifically, the side push rod 320 is slidably mounted on the connecting frame 120 to achieve left and right movement. It is conceivable that the connecting rod can also be sleeved on the outer periphery of the connecting frame 120 to achieve left and right movement by sliding; or the side push rod 320 is mounted on the connecting frame 120, and a ball bearing is provided between the side push rod 320 and the connecting frame 120, so that the side push rod 320 is rollingly connected to the connecting frame 120; or the connecting frame 120 is provided with a slide groove along the left and right direction, and the side push rod 320 is slidably connected to the slide groove.

[0039] It is conceivable that the first elastic member 330 may also be a spring, a silicone block or other elastic structure, and those skilled in the art may configure the structure according to actual needs.

[0040] In this embodiment, the locking assembly 200 includes a locking plate 210, a locking member 220, and a linkage mechanism. The locking plate 210 is coaxially mounted on the wheel 130, and the two rotate synchronously. A locking engagement portion 211 is provided on the outer periphery of the locking plate 210. The locking member 220 is movably mounted on the side frame 110 and can engage or disengage the locking engagement portion 211. When the side push rod 320 moves in the left and right directions, the corresponding locking member 220 can be linked to the movement of the linkage mechanism. Compared to methods that use friction braking on the wheel 130, this structure provides a more stable locking effect. When the wheel 130 is locked, external thrust will not cause the wheel 130 to rotate. Specifically, the locking member 220 is provided with a locking pin, and the locking engagement portion 211 is a retaining groove. When the locking member 220 moves until the locking pin engages the retaining groove, the wheel 130 is locked. When the locking pin disengages the retaining groove, the wheel 130 and the locking plate 210 can rotate normally.

[0041] Specifically, a plurality of locking engagement portions 211 are arranged around the outer periphery of the locking plate 210, so that the wheel 130 can be locked by the locking member 220 at almost any rotation. The number of locking engagement portions 211 can be three or more, and those skilled in the art can configure the specific configuration according to actual needs.

[0042] It is conceivable that the locking member 220 and the locking disk 210 can also be other structures. For example, the locking member 220 is provided with a limiting groove, and a locking pin is provided on the periphery of the locking disk 210, and the locking pin can be inserted into or disengaged from the limiting groove, which can also achieve the same function, or the locking member 220 is provided with a tooth, and the locking disk 210 is provided with a limiting groove, and the tooth can be inserted into or disengaged from the limiting groove.

[0043] Specifically, in this embodiment, the locking plate 210 is integrally formed with the wheel 130, which provides a strong connection between the locking plate 210 and the wheel 130 and reduces assembly difficulty. It is conceivable that in other embodiments, the locking plate 210 and the wheel 130 may be connected in other ways, such as being screwed to the wheel 130 or welded to the wheel 130. Those skilled in the art can configure the connection based on actual needs.

[0044] In the embodiment, the side frame 110 includes an upper frame 111 and a lower frame 112. The two upper frames 111 are connected by a connecting frame 120. The two lower frames 112 are rotatably arranged on the upper frame 111 in a one-to-one correspondence. The lower frames 112 can be locked or unlocked relative to the corresponding upper frames 111. The rotation axis of the lower frames 112 is arranged vertically. The lower frames 112 are provided with wheels 130. The linkage mechanism includes a tilting member 230, a transmission slider 240, a traction rope 250, an unlocking elastic member 260 and a locking elastic member 270. The transmission slider 240 is slidably arranged on the lower frame 112. The transmission slider 240 is connected to the locking member 260 through the traction rope 250. 20 connection, the locking member 220 is slidably set on the lower frame 112, the unlocking elastic member 260 is set between the transmission slider 240 and the lower frame 112 and is used to apply a force to make the locking member 220 away from the locking matching part 211, the locking elastic member 270 is set between the locking member 220 and the lower frame 112 and is used to apply a force to make the locking member 220 close to the locking matching part 211, the elastic force of the unlocking elastic member 260 is greater than the elastic force of the locking elastic member 270, the inclined top member 230 is vertically slidably set on the upper frame 111, and the side push rod 320 can push the transmission slider 240 and compress the unlocking elastic member 260 through the inclined top member 230. The lower frame 112 can rotate relative to the upper frame 111, allowing the user to push the stroller in different directions. The lower frame 112 and wheels 130 can adaptively rotate to the corresponding direction. The aforementioned linkage mechanism can also be applied to this type of side frame 110, allowing the side push rod 320 to control the position of the locking member 220, thereby controlling the locking or unlocking of the wheel 130. This is relatively convenient to use and has a relatively simple structure. Specifically, the unlocking elastic member 260 and the locking elastic member 270 are both springs, and the spring rate of the unlocking elastic member 260 should be greater than the spring rate of the locking elastic member 270.

[0045] When the side push rod 320 compresses the unlocking elastic member 260 through the inclined top member 230 and the transmission slider 240, the traction rope 250 allows the locking member 220 to slide close to the locking fitting part 211. At this time, the locking elastic member 270 relaxes and causes the locking member 220 to stop the locking fitting part 211 of the locking plate 210, thereby locking the wheel 130; when the side push rod 320 and the inclined top member 230 are reset, the unlocking elastic member 260 relaxes, and the inclined top member 230 is pulled out of the locking plate 210 through the transmission slider 240 and the traction rope 250, and at the same time, the locking elastic member 270 is compressed, so that the wheel 130 is unlocked.

[0046] It is understandable that the unlocking elastic member 260 and the locking elastic member 270 may also be elastic structures such as springs, and those skilled in the art may configure them specifically according to actual needs.

[0047] It is understandable that in other embodiments, the side frame 110 may also be an integrated structure to meet the requirements of different stroller specifications.

[0048] In the embodiment, the tilted lift member 230 is vertically slidably disposed on the upper frame 111 and is located on one radial side of the rotation axis of the lower frame 112. The transmission slider 240 is vertically slidably disposed on the lower frame 112 and is located on one radial side of the rotation axis of the lower frame 112. The lower frame 112 can rotate relative to the upper frame 111 to a position where the tilted lift member 230 and the transmission slider 240 are opposite or offset. When the lower frame 112 rotates to a specified position relative to the upper frame 111, that is, when the tilted lift member 230 and the transmission slider 240 are opposite, the side push rod 320 can control the wheel 130 to unlock or lock by pushing the transmission slider 240 through the tilted lift member 230. When the lower frame 112 rotates to a non-specified position relative to the upper frame 111, that is, when the tilted lift member 230 and the transmission slider 240 are offset, the side push rod 320 cannot control the wheel 130 to unlock or lock by pushing the transmission slider 240 through the tilted lift member 230, thereby preventing the brake device from being accidentally locked.

[0049] Specifically, when the lower frame 112 rotates relative to the upper frame 111 to the point where it can push the stroller forward and backward, the inclined lift piece 230 is opposite to the transmission slider 240; when the lower frame 112 rotates to other positions relative to the upper frame 111, the inclined lift piece 230 is staggered with the transmission slider 240.

[0050] Specifically, one end of the tilted lift member 230 can be inserted into the guide hole where the transmission slider 240 is located, thereby locking the lower frame 112 relative to the upper frame 11. When one end of the tilted lift member 230 is completely separated from the lower frame 112, the direction of the lower frame 112 relative to the upper frame 11 can be adjusted. It is understood that the direction of the lower frame 112 relative to the upper frame 11 can also be locked or unlocked by other means, such as using a latch structure to lock or unlock the direction of the lower frame 112 relative to the upper frame 11.

[0051] In this embodiment, the linkage mechanism further includes a second elastic member 280, which is disposed between the tilting member 230 and the upper frame 111 and is used to apply a force to the tilting member 230 away from the transmission slider 240. The second elastic member 280 facilitates the automatic reset of the tilting member 230 away from the transmission slider 240, thereby facilitating ease of use.

[0052] Specifically, the second elastic member 280 is a spring. It is understandable that the second elastic member 280 can also be a spring or other elastic structure, and those skilled in the art can configure it according to actual needs.

[0053] Specifically, one end of the side push rod 320 is provided with an inclined surface, and the inclined lift member 230 is also provided with an inclined surface. The side push rod 320 uses the inclined surface to push the inclined lift member 230 to slide vertically, thereby causing the transmission slider 240 to slide vertically. When the side push rod 320 is reset, the inclined lift member 230 is reset by the second elastic member 280. It is conceivable that the side push rod 320 can also be provided with an inclined strip hole, and the inclined lift member 230 is provided with a latch that slides in the strip hole. When the side push rod 320 moves left and right, it pushes the inclined lift member 230 up and down through the wall of the strip hole.

[0054] In an embodiment, the lower frame 112 includes a wheel frame 1121, a shock absorber frame 1122 and a shock absorber structure 1123. The wheel frame 1121 is rotatably connected to the lower part of the shock absorber frame 1122, the wheel 130 is rotatably connected to the wheel frame 1121, the shock absorber structure 1123 is connected between the wheel frame 1121 and the shock absorber frame 1122, the transmission slider 240 and the unlocking elastic member 260 are arranged on the shock absorber frame 1122, the locking member 220 and the locking elastic member 270 are arranged on the wheel frame 1121, and the outer periphery of the traction rope 250 is provided with a flexible tube 290, and the two ends of the flexible tube 290 are respectively fixed to the shock absorber frame 1122 and the wheel frame 1121. The above structure enables the side frame 110 to have a better shock-absorbing effect, and when the wheel frame 1121 swings relative to the shock-absorbing frame 1122 for shock absorption, due to the presence of the flexible tube 290, the length of the traction rope 250 is limited to remain basically unchanged, so that the locking member 220 will not loosen, avoiding the risk of the locking member 220 accidentally locking the wheel 130 during shock absorption.

[0055] Specifically, the flexible tube 290 can be a spring sleeve having a minimum length so that the length of the traction rope 250 does not exceed the minimum length of the spring sleeve. It is understood that the flexible tube 290 can also be made of other materials or structures, such as a metal braided hose or a flexible plastic tube.

[0056] Specifically, the shock absorbing structure 1123 is a spring. It is understandable that the shock absorbing structure 1123 can also be a spring or other elastic structure, or a pneumatic structure for shock absorption. Those skilled in the art can configure it according to actual needs.

[0057] In this embodiment, a first plug-in block 291 is provided at one end of the flexible tube 290, and a first slot is provided on the shock absorber frame 1122, into which the first plug-in block 291 is inserted. A second plug-in block 292 is provided at the other end of the flexible tube 290, and a second slot 1124 is provided on the wheel frame 1121, into which the second plug-in block 292 is inserted. This plug-in connection secures the ends of the flexible tube 290 to the shock absorber frame 1122 and the wheel frame 1121, respectively, resulting in a simple structure and ease of implementation. It is also conceivable that the ends of the flexible tube 290 could be secured to the shock absorber frame 1122 and the wheel frame 1121, respectively, by screws or adhesive.

[0058] It is conceivable that the side push rod 320 can also control the locking member 220 to lock or unlock the wheel 130 through other structures. For example, the side push rod 320 and the locking member 220 are directly connected by a traction rope 250. When the two side push rods 320 move away from each other, the traction rope 250 allows the locking member 220 to approach the locking fitting portion 211; when the two side push rods 320 approach each other, the traction rope 250 pulls the locking member 220 out of the locking fitting portion 211.

[0059] The utility model also discloses a baby carriage adopting the brake device. Due to the adoption of the brake device, the overall structural strength of the baby carriage is higher, thereby improving the safety of the baby carriage.

[0060] Specifically, the stroller of the present invention has two braking devices, that is, the stroller has two wheel support assemblies 100 distributed front and rear, and each wheel support assembly 100 is equipped with two locking assemblies 200 and a control assembly 300. The user can control the two front and rear locking assemblies 200 to respectively determine whether the front and rear wheel support assemblies 100 of the stroller are in the braking state, which makes the stroller more user-friendly and has a wider range of applications.

[0061] It is understandable that in other embodiments, the stroller may also be provided with the above-mentioned braking device, that is, the stroller may be provided with a wheel bracket assembly 100 on the front side, and a wheel bracket assembly 100, a locking assembly 200 and a control assembly 300 on the rear side, and the entire stroller may be put into a braking or unlocking state by making the wheel bracket assembly 100 on the rear side enter the braking or unlocking state; similarly, the wheel bracket assembly 100, the locking assembly 200 and the control assembly 300 may be provided on the front side, and a wheel bracket assembly 100 may be provided on the rear side, and the entire stroller may be put into a braking or unlocking state by making the wheel bracket assembly 100 on the front side enter the braking or unlocking state.

[0062] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0063] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A braking device, characterized in that: include: A wheel support assembly (100) includes a side frame (110) and a connecting frame (120), wherein two side frames (110) are provided and arranged side by side on the left and right sides, and the connecting frame (120) is arranged between the two side frames (110), and both ends of the connecting frame (120) are fixedly connected to the side frames (110) on the corresponding sides, and wheels (130) are rotatably provided at the lower ends of the two side frames (110); Two locking assemblies (200), respectively disposed on the two side frames (110) and capable of locking or unlocking the rotation of the two wheels (130); The control assembly (300) includes a pedal member (310) and two side push rods (320). The two side push rods (320) are movably arranged on the connecting frame (120) in the left-right direction and can drive the two locking assemblies (200) to lock or unlock the rotation of the two wheels (130) in a one-to-one correspondence. The pedal member (310) is rotatably arranged on the connecting frame (120) and can drive the two side push rods (320) to move in the left-right direction.

2. The brake device according to claim 1, characterized in that: The connecting frame (120) is a tube body arranged in the left-right direction, the side push rod (320) is slidably arranged in the tube body, the side push rod (320) is provided with a push block (321), the tube wall of the tube body is provided with a first clearance hole, the push block (321) is passed through the first clearance hole and extends to the outside of the connecting frame (120), the pedal member (310) is rotatably sleeved on the outer periphery of the connecting frame (120), and the left and right sides of the pedal member (310) are sequentially provided with a locking groove (311), a guide surface (312) and an unlocking groove (313) around its rotation axis. The two The left-right distance between the unlocking grooves (313) is smaller than the left-right distance between the two locking grooves (311); the two side push rods (320) are respectively arranged on the left and right sides of the pedal member (310); the pedal member (310) has a locking position and an unlocking position; in the locking position, the pushing block (321) is located in the corresponding locking groove (311); in the unlocking position, the pushing block (321) is located in the corresponding unlocking groove (313); the pushing block (321) can switch between the locking groove (311) and the unlocking groove (313) along the guide surface (312).

3. The brake device according to claim 2, characterized in that: A first elastic member (330) is provided between the side push rod (320) and the connecting frame (120), and the first elastic member (330) is used to apply a force to the side push rod (320) toward the footrest member (310) in the left and right directions.

4. The brake device according to claim 1, wherein: The locking assembly (200) comprises a locking plate (210), a locking member (220) and a linkage mechanism. The locking plate (210) is coaxially arranged on the wheel (130) and the two rotate synchronously. A locking fitting portion (211) is provided on the outer periphery of the locking plate (210). The locking member (220) is movably arranged on the side frame (110) and can stop or disengage from the locking fitting portion (211). When the side push rod (320) moves in the left and right directions, the corresponding locking member (220) can be linked to move by the linkage mechanism.

5. The brake device according to claim 4, characterized in that: The side frame (110) includes an upper frame (111) and a lower frame (112), the two upper frames (111) are connected by the connecting frame (120), the two lower frames (112) are rotatably arranged on the upper frame (111) in a one-to-one correspondence, the lower frames (112) can be locked or unlocked relative to the corresponding upper frames (111), the rotation axis of the lower frame (112) is arranged vertically, and the lower frame (112) is provided with the wheel (130); the linkage mechanism includes a tilting member (230), a transmission slider (240), a traction rope (250), an unlocking elastic member (260) and a locking elastic member (270), the transmission slider (240) is slidably arranged on the lower frame (112), and the transmission slider (240) is connected to the locking member (220) through the traction rope (250). The locking member (220) is slidably arranged on the lower frame (112), the unlocking elastic member (260) is arranged between the transmission slider (240) and the lower frame (112) and is used to apply a force to make the locking member (220) move away from the locking fitting portion (211), the locking elastic member (270) is arranged between the locking member (220) and the lower frame (112) and is used to apply a force to make the locking member (220) move close to the locking fitting portion (211), the elastic force of the unlocking elastic member (260) is greater than the elastic force of the locking elastic member (270), the inclined top member (230) is vertically slidably arranged on the upper frame (111), and the side push rod (320) can push the transmission slider (240) and compress the unlocking elastic member (260) through the inclined top member (230).

6. The brake device according to claim 5, characterized in that: The inclined top member (230) is vertically slidably arranged on the upper frame (111) and is located on a radial side of the rotation axis of the lower frame (112); the transmission slider (240) is vertically slidably arranged on the lower frame (112) and is located on a radial side of the rotation axis of the lower frame (112); the lower frame (112) can rotate relative to the upper frame (111) to a position where the inclined top member (230) and the transmission slider (240) are relative to or staggered with each other.

7. The brake device according to claim 5, characterized in that: The linkage mechanism further comprises a second elastic member (280), which is arranged between the inclined lift member (230) and the upper frame (111) and is used to apply a force to move the inclined lift member (230) away from the transmission slider (240).

8. The brake device according to claim 5, characterized in that: The lower frame (112) comprises a wheel frame (1121), a shock absorbing frame (1122) and a shock absorbing structure (1123); the wheel frame (1121) is rotatably connected to the lower part of the shock absorbing frame (1122); the wheel (130) is rotatably connected to the wheel frame (1121); the shock absorbing structure (1123) is connected between the wheel frame (1121) and the shock absorbing frame (1122); the transmission slider (240) and the unlocking elastic member (260) are arranged on the shock absorbing frame (1122); the locking member (220) and the locking elastic member (270) are arranged on the wheel frame (1121); the outer periphery of the traction rope (250) is provided with a flexible tube (290); the two ends of the flexible tube (290) are respectively fixed to the shock absorbing frame (1122) and the wheel frame (1121).

9. The brake device according to claim 8, characterized in that: One end of the flexible tube (290) is provided with a first plug-in block (291), the shock-absorbing frame (1122) is provided with a first slot, and the first plug-in block (291) is inserted into the first slot; the other end of the flexible tube (290) is provided with a second plug-in block (292), the wheel frame (1121) is provided with a second slot (1124), and the second plug-in block (292) is inserted into the second slot (1124).

10. A baby carriage, characterized in that: A brake device comprising the brake device according to any one of claims 1 to 9.

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