Backrest release mechanism and stroller

Abstract

The application discloses a backrest release mechanism and a baby carriage. The backrest release mechanism comprises a seat part, a backrest part, a backrest locking piece and a backrest release driving mechanism. The backrest part is pivotally connected to the seat part. The backrest locking piece is engaged between the seat part and the backrest part. The backrest release driving mechanism is connected to the backrest locking piece. The backrest release driving mechanism drives the backrest locking piece to slide, so that the backrest locking piece is disengaged from the backrest part, thereby releasing the backrest part. The baby carriage comprises the backrest release mechanism.

Description

[0001] This application is a divisional application of Chinese invention patent application filed on January 10, 2020, entitled "Frame Folding Mechanism, Frame Locking Mechanism, Backrest Release Mechanism and Stroller", with applicant "Mingmen (China) Infant Products Co., Ltd." and application number 202010029319.2. Technical Field

[0002] This invention relates to the field of baby product technology, and more particularly to a back-locking mechanism and a stroller having the back-locking mechanism. Background Technology

[0003] With the widespread use of strollers, people have increasingly higher requirements for their functionality. They not only want strollers to make their babies feel comfortable and safe while in use, but also want them to be able to fold into a smaller size when not in use, achieving the effects of being aesthetically pleasing, space-saving, and easy to store.

[0004] Existing strollers typically consist of a frame and a backrest and seat mounted on the frame. When folding the stroller, it is usually necessary to operate the frame, backrest, and seat separately to fold them all. This method of folding strollers is cumbersome and inconvenient. Summary of the Invention

[0005] The first objective of this invention is to provide a stroller folding mechanism in which the frame and seat can be folded together.

[0006] A second objective of the present invention is to provide a stroller having a stroller folding mechanism, by which the stroller frame and seat are folded together.

[0007] The third objective of this invention is to provide a frame locking mechanism with a simple structure that can lock and unlock the frame.

[0008] A fourth objective of the present invention is to provide a stroller having a frame locking mechanism by means of which the frame is locked.

[0009] The fifth objective of this invention is to provide a simple, lockable, back-to-back release mechanism.

[0010] The sixth objective of the present invention is to provide a stroller having a back-to-back release mechanism by means of which the back-to-back release mechanism is used to achieve back-to-back release.

[0011] To achieve the aforementioned first objective, the present invention provides a frame folding mechanism, including a frame, a seat, and a linkage. The frame includes a handrail, a front leg, and a rear leg. The handrail, front leg, and rear leg are coaxially pivotally connected to form a first rotation center. The front leg is pivotally connected to the seat to form a second rotation center. One end of the linkage is pivotally connected to the seat to form a third rotation center, and the other end of the linkage is pivotally connected to the handrail to form a fourth rotation center. The first, second, third, and fourth rotation centers are spaced apart. The frame folds by rotating, causing the linkage to drive the seat to fold by rotating.

[0012] Compared with the prior art, the frame folding mechanism of the present invention has a unique feature: the rider's hand, front foot, and rear foot are coaxially pivotally connected; the front foot is pivotally connected to the seat; and the linkage is pivotally connected between the seat and the rider's hand. This forms a planar linkage mechanism, allowing the rider's hand, front foot, seat, and linkage to rotate and fold by driving the rider's hand and front foot to rotate towards the rear foot, thereby causing the seat to rotate and fold. Therefore, the frame folding mechanism of the present invention enables the frame and seat to fold together in a coordinated manner, making it simple and convenient to operate and suitable for widespread application.

[0013] Preferably, the rider's end is provided with a rider cover, the front foot end is provided with a front foot cover, and the rear foot end is provided with a rear foot cover. The rider cover, the front foot cover, and the rear foot cover are coaxially pivotally connected and form the first rotation center.

[0014] Preferably, the linkage is pivotally connected to the driver's cover body off-center from the first rotation center.

[0015] Preferably, the seat includes a seat folding drive and a seat body. One end of the seat folding drive is pivotally connected to the front foot, and the other end of the seat folding drive is pivotally connected to a linkage. The seat body is fixedly connected to the seat folding drive.

[0016] Preferably, the seat folding drive includes a first folding drive portion and a second folding drive portion formed by bending and extending from one end of the first folding drive portion, and the seat body is connected to the first folding drive portion and the second folding drive portion respectively.

[0017] Preferably, the seat body includes a front seat tube and a rear seat tube, the front seat tube is connected between a first retraction drive and a second retraction drive, and the front seat tube and the rear seat tube are pivotally connected.

[0018] Preferably, the pivot axis between the seat retraction drive and the linkage is the same as the pivot axis between the rear seat tube and the front seat tube.

[0019] Preferably, the rear seat tube is pivotally connected to the rear foot and forms a fifth rotation center, which is spaced apart from the first rotation center.

[0020] Preferably, the rider includes an upper hand and an lower hand, the upper hand and the lower hand are pivotally connected, and the front foot, the back foot and the lower hand are coaxially pivotally connected to form a first rotation center.

[0021] Preferably, the frame folding mechanism also includes a backrest section, which is pivotally connected to the seat section.

[0022] Preferably, the frame folding mechanism also includes an armrest, which is fixedly connected to the linkage.

[0023] Ideally, the back foot should be positioned between the front foot and the rider.

[0024] Preferably, the rear leg has an elastic protrusion and the front leg has a locking groove, which can be folded or unfolded by rotating the frame to make the elastic protrusion engage or disengage from the locking groove.

[0025] To achieve the second objective mentioned above, the present invention provides a stroller that includes the aforementioned frame folding mechanism, with wheels pivotally connected to the bottom of both the front legs and the bottom of the rear legs.

[0026] Compared with the prior art, the stroller of the present invention has a frame folding mechanism in which the handrail, front leg and rear leg are coaxially pivotally connected, the front leg is pivotally connected to the seat, and the linkage is pivotally connected between the seat and the handrail. This forms a planar linkage mechanism, so that the handrail and front leg can be driven to rotate and fold towards the rear leg, thereby driving the seat to rotate and fold. Therefore, the stroller of the present invention can make the frame and seat fold together, which is simple and convenient to operate and suitable for widespread promotion.

[0027] To achieve the aforementioned third objective, the present invention provides a frame locking mechanism, including a frame, a sliding member, a frame deployment locking member, and a release drive mechanism. The frame includes a handbrake, a front foot, and a rear foot. The handbrake has a handbrake locking hole, and the front foot has a front foot locking hole. The sliding member is slidably disposed within the rear foot. The frame deployment locking member is disposed on the sliding member and engages with the handbrake locking hole and the front foot locking hole. The release drive mechanism is connected to the sliding member and drives the sliding member to slide together with the frame deployment locking member, thereby causing the frame deployment locking member to disengage from the handbrake locking hole and the front foot locking hole, thus releasing the frame.

[0028] Compared with the prior art, the frame locking mechanism of the present invention locks the rider and the front foot by providing a rider locking hole and a front foot locking hole, and engaging the frame unfolding locking member in the rider locking hole and the front foot locking hole, thereby locking the rider and the front foot and preventing the rider and the front foot from rotating and folding in the direction of the rear foot, thus achieving the locking of the frame; the release drive mechanism can drive the sliding member to slide together with the frame unfolding locking member, so that the frame unfolding locking member disengages from the rider locking hole and the front foot locking hole, thereby releasing the frame and allowing the rider and the front foot to rotate and fold in the direction of the rear foot. Therefore, the frame locking mechanism of the present invention can lock and release the frame, and has a simple structure and low production cost.

[0029] Preferably, the rider has a rider connector, and a rider locking hole is provided on the rider connector.

[0030] Preferably, the front foot is provided with a front foot connector, and the front foot locking hole is formed on the front foot connector.

[0031] Preferably, the rear foot is provided with a rear foot connector, and the rear foot connector is provided with a limiting groove, and the frame unfolding locking member is slidably inserted into the limiting groove.

[0032] Preferably, the release drive mechanism includes a release drive member slidably mounted on the handlebars. The release drive member is in contact with a sliding member, and the release drive member is driven to slide, thereby pushing the sliding member to slide.

[0033] Preferably, the driver has a sliding groove in which the release drive is slidably engaged.

[0034] Preferably, the release drive mechanism further includes a first traction member, the release drive member having a first inclined surface, the sliding member having a second inclined surface, the first inclined surface and the second inclined surface being connected in cooperation, the first traction member being connected to the release drive member, and the release drive member being pulled by the first traction member to drive the sliding member and the frame release locking member to slide together.

[0035] Preferably, the release drive mechanism further includes a release operation mechanism, which is disposed on the rider. The first traction member is connected to the release operation mechanism, and the first traction member is pulled by operating the release operation mechanism.

[0036] Preferably, the frame locking mechanism further includes a first elastic reset member for resetting the frame deployment lock member, the first elastic reset member being disposed between one of the frame deployment lock member and the sliding member and the rear foot.

[0037] Preferably, the sliding component is provided with slots for the pivot shafts of the rider, front foot, and rear foot to pass through.

[0038] Preferably, the rider's end is provided with a rider cover, the front foot end is provided with a front foot cover, and the rear foot end is provided with a rear foot cover, and the rider cover, the front foot cover and the rear foot cover are coaxially pivotally connected.

[0039] Preferably, the rear foot cover is located between the front foot cover and the driver cover.

[0040] Preferably, a decorative cover is attached to the outer side of the front foot cover.

[0041] To achieve the fourth objective mentioned above, the present invention provides a stroller that includes the aforementioned frame locking mechanism.

[0042] Compared with the prior art, the stroller of the present invention has a frame locking mechanism. This frame locking mechanism locks the stroller by providing a hand locking hole for the hand and a front foot locking hole for the front foot, and engaging the frame unfolding locking member in the hand locking hole and the front foot locking hole, thereby locking the hand and front foot and preventing them from rotating and folding in the direction of the rear foot, thus achieving the locking of the frame. The release drive mechanism can drive the sliding member to slide together with the frame unfolding locking member, causing the frame unfolding locking member to disengage from the hand locking hole and the front foot locking hole, thereby releasing the frame and allowing the hand and front foot to rotate and fold in the direction of the rear foot. Therefore, the stroller of the present invention can lock and release the frame, and has a simple structure and low production cost.

[0043] Preferably, the frame includes a front foot, a rear foot, and a rider, the rider, the front foot, and the rear foot being coaxially pivotally connected, and wheels are pivotally connected to the bottom of the front foot and the bottom of the rear foot.

[0044] To achieve the fifth objective mentioned above, the present invention provides a backrest release mechanism, which includes a seat portion, a backrest portion, a backrest locking member, and a backrest release drive mechanism. The backrest portion is pivotally connected to the seat portion, the backrest locking member is engaged between the seat portion and the backrest portion, and the backrest release drive mechanism is connected to the backrest locking member. The backrest release drive mechanism drives the backrest locking member to slide, thereby causing the backrest locking member to disengage from the backrest portion and release the backrest portion.

[0045] Preferably, the back-locking mechanism further includes a first foot, a second foot, and a rider, wherein the first foot, the second foot, the rider, and the seat are configured to have a foldable structure and a folding-locking drive mechanism.

[0046] Preferably, the backrest release mechanism further includes a first foot, a second foot, and a rider, the first foot, the second foot, the rider, and the seat forming a foldable frame, the foldable frame having a folding release drive mechanism, the folding release drive mechanism including a first traction member.

[0047] Preferably, the release drive mechanism includes: a backrest retraction drive member that drives the backrest locking member to slide and disengage from the backrest portion; a second traction member that is connected to the backrest retraction drive member and can pull the backrest retraction drive member; and a release operation mechanism that is connected to both the first traction member and the second traction member, wherein by operating the release operation mechanism, the second traction member is pulled while the first traction member is pulled to release the frame.

[0048] Preferably, the seat portion is provided with a positioning member, the backrest portion is pivotally connected to the positioning member, and the backrest locking member is engaged between the positioning member and the backrest portion.

[0049] Preferably, the positioning member has a first internal gear on its inner side, the backrest has a second internal gear on its inner side, and the backrest locking member has an external gear, which engages with the first internal gear and the second internal gear respectively.

[0050] Preferably, the backrest includes a backrest body and a backrest fixing member, the backrest body and the backrest fixing member are fixedly connected, and the second internal gear is disposed on the inner side of the backrest fixing member.

[0051] Preferably, the pivot shaft between the backrest and the positioning member passes through the backrest locking member.

[0052] Preferably, the backrest retraction drive is in contact with the backrest locking member, and the backrest retraction drive slides and pushes the backrest locking member to move and disengage the backrest locking member from the backrest part.

[0053] Preferably, the backrest folding drive member is provided with a third inclined surface, and the backrest locking member is in contact with the third inclined surface. The backrest folding drive member can drive the backrest locking member to move through the third inclined surface.

[0054] Preferably, the release mechanism is located at the driver's position.

[0055] Preferably, the back-locking mechanism further includes a second elastic reset member for resetting the back-locking member.

[0056] To achieve the fifth objective mentioned above, the present invention also provides a backrest release mechanism, including a frame, a backrest portion, a backrest locking member, and a release drive mechanism. The backrest portion is pivotally connected to the frame, the backrest locking member is engaged between the frame and the backrest portion, and the release drive mechanism is connected to the backrest locking member. The release drive mechanism drives the backrest locking member to slide, thereby causing the backrest locking member to disengage from the engagement with the backrest portion, thereby releasing the backrest portion.

[0057] Compared with the prior art, the backrest release mechanism of the present invention is provided with a backrest locking member, which is engaged between the frame and the backrest, thereby locking the backrest to the frame. Since the release drive mechanism is connected to the backrest locking member, the backrest locking member can be driven to slide through the release drive mechanism, so that the backrest locking member is disengaged from the engagement with the backrest, thereby releasing the backrest, so that the backrest can rotate and fold relative to the frame. Moreover, the structure is simple and the production cost is low.

[0058] Preferably, the frame is provided with a positioning member, the backrest is pivotally connected to the positioning member, and the backrest locking member is engaged between the positioning member and the backrest.

[0059] Preferably, the positioning member has a first internal gear on its inner side, the backing part has a second internal gear on its inner side, and the backing locking member has an external gear, which engages with the first internal gear and the second internal gear respectively.

[0060] Preferably, the backrest includes a backrest body and a backrest fixing member, the backrest body and the backrest fixing member are fixedly connected, and the second internal gear is disposed on the inner side of the backrest fixing member.

[0061] Preferably, the pivot shaft between the backrest and the positioning member passes through the backrest locking member.

[0062] Preferably, the frame includes a seat section, and the positioning element is fixedly connected to the seat section.

[0063] Preferably, the release drive mechanism includes a back-retracting drive member, which is in contact with a back-locking member. The back-retracting drive member slides and pushes the back-locking member to move and disengage from the back-retracting part.

[0064] Preferably, the backrest retraction drive member is provided with a third inclined surface, and the backrest locking member is in contact with the third inclined surface. The backrest retraction drive member can drive the backrest locking member to move through the third inclined surface.

[0065] Preferably, the backrest locking member includes an engaging part and a fixing part. The engaging part engages between the frame and the backrest, and the engaging part and the fixing part are fixedly connected. The backrest retraction drive member is disposed between the engaging part and the fixing part, and the fixing part is in contact with the third inclined surface.

[0066] Preferably, the release drive mechanism further includes a second traction member, which is connected to and can pull the back-to-close drive member.

[0067] Preferably, the release drive mechanism further includes a release operation mechanism, which is disposed on the rider and used to operate the release frame. The release operation mechanism is connected to the second traction member, and the second traction member is pulled by operating the release operation mechanism.

[0068] Preferably, the backrest release mechanism further includes a second elastic reset member for resetting the backrest locking member, the second elastic reset member being disposed between the backrest locking member and the vehicle frame.

[0069] To achieve the sixth objective mentioned above, the present invention provides a stroller that includes the aforementioned backrest release mechanism.

[0070] Compared with the prior art, the stroller of the present invention has a backrest release mechanism, which is provided with a backrest locking member. The backrest locking member is engaged between the frame and the backrest, thereby locking the backrest to the frame. Since the release drive mechanism is connected to the backrest locking member, the backrest locking member can be driven to slide through the release drive mechanism, so that the backrest locking member is disengaged from the engagement with the backrest, thereby releasing the backrest. This allows the backrest to rotate and fold relative to the frame. The structure is simple and the production cost is low.

[0071] Preferably, the frame includes a front leg, a rear leg, and a rider, with the rider, front leg, and rear leg pivotally connected coaxially, and wheels pivotally connected to the bottom of both the front leg and the rear leg. Attached Figure Description

[0072] Figure 1 This is a three-dimensional structural diagram of the stroller of the present invention from a first angle.

[0073] Figure 2 This is a three-dimensional structural diagram of the stroller of the present invention when folded.

[0074] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0075] Figure 4 This is a schematic diagram of the structure of the stroller after the front foot cover of the present invention has been separated.

[0076] Figure 5 This is a schematic diagram of the frame locking mechanism of the stroller of the present invention.

[0077] Figure 6 This is a schematic diagram of the structure of the stroller's handlebar connector of the present invention.

[0078] Figure 7 This is a three-dimensional structural diagram of the stroller of the present invention from a second angle.

[0079] Figure 8 This is a schematic diagram of the back-locking mechanism of the stroller of the present invention.

[0080] Figure 9 This is a three-dimensional structural diagram of the stroller of the present invention from a third angle.

[0081] Figure 10 yes Figure 9 Enlarged view of point B in the middle.

[0082] Figure 11 This is a schematic diagram of the structure between the rider, front foot, and rear foot in this invention.

[0083] Figure 12 This is a schematic diagram of the structure of the front foot cover of the present invention.

[0084] Figure 13 This is a schematic diagram of the stroller structure after folding. Detailed Implementation

[0085] To illustrate the technical content and structural features of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0086] Please see Figures 1 to 5 ,as well as Figure 8 The stroller 100 of the present invention includes a frame 1, a seat 2, a backrest 4, an armrest 5, a frame folding mechanism 101, a frame locking mechanism 102, and a backrest release mechanism 103. The seat 2 is disposed on the frame 1 and is used for an infant to sit on. The backrest 4 is disposed on the seat 2 and is used for an infant to lean against. The frame folding mechanism 101 is disposed between the frame 1 and the seat 2, and the stroller 100 folding mechanism is used to fold the frame 1 and the seat 2 together. The frame locking mechanism 102 is disposed inside the frame 1 and is used to lock or unlock the frame 1. The backrest release mechanism 103 is disposed between the backrest 4 and the seat 2 and is used to release the backrest, so that the backrest can be rotated and folded.

[0087] Please see Figures 1 to 3 The frame folding mechanism 101 includes a linkage 3. The frame 1 includes a handlebar 11, a front leg 12, and a rear leg 13. The handlebar 11, front leg 12, and rear leg 13 are coaxially pivotally connected to form a first rotation center D1. The front leg 12 is pivotally connected to the seat 2 to form a second rotation center D2. One end of the linkage 3 is pivotally connected to the seat 2 to form a third rotation center D3, and the other end of the linkage 3 is pivotally connected to the handlebar 11 to form a fourth rotation center D4. The first, second, third, and fourth rotation centers are spaced apart. The frame 1 rotates and folds, causing the linkage 3 to drive the seat 2 to rotate and fold. Figure 3As shown, D1 represents the first rotation center formed by the coaxial pivoting of the rider 11, front foot 12, and rear foot 13; D2 represents the second rotation center formed by the pivoting of the front foot 12 and the seat 2; D3 represents the third rotation center formed by the pivoting of the linkage 3 and the seat 2; and D4 represents the fourth rotation center formed by the pivoting of the linkage 3 and the rider 11. The rider 11, front foot 12, seat 2, and linkage 3 form a planar linkage mechanism. Therefore, by driving the rider 11 and front foot 12 to rotate and fold towards the rear foot 13, the seat 2 will rotate and fold. Thus, when the frame 1 rotates and folds, the seat 2 will also fold. Similarly, by rotating and folding the seat 2, the frame 1 will also fold. The specific folding method is not limited to this. Specifically, one end of the rider 11 is provided with a rider cover 111, one end of the front foot 12 is provided with a front foot cover 121, and one end of the rear foot 13 is provided with a rear foot cover 131. The rider cover 111, the front foot cover 121 and the rear foot cover 131 are coaxially pivotally connected to form a first rotation center D1. The rear foot cover 131 is located between the front foot cover 121 and the rider cover 111. The linkage 3 is pivotally connected to the rider cover 111 off from the first rotation center.

[0088] Please see Figure 2 and Figure 3In this embodiment, the seat portion 2 includes a seat folding drive 21 and a seat body 22. One end of the seat folding drive 21 is pivotally connected to the front leg 12, and the rotation center between the seat folding drive 21 and the front leg 12 is a second rotation center D2. The other end of the seat folding drive 21 is pivotally connected to a linkage 3, and the rotation center between the seat folding drive 21 and the linkage 3 is a third rotation center D3. The seat body 22 is fixedly connected to the seat folding drive 21. Specifically, the seat folding drive 21 includes a first folding drive portion 211 and a second folding drive portion 212 formed by bending and extending from one end of the first folding drive portion 211. The seat body 22 is connected to both the first folding drive portion 211 and the second folding drive portion 212, and the bend between the first folding drive portion 211 and the second folding drive portion 212 is pivotally connected to the front leg 12. Furthermore, the seat body 22 includes a front seat tube 221 and a rear seat tube 222. The front seat tube 221 is connected to the first folding drive unit 211 and the second folding drive unit 212, respectively, and the front seat tube 221 is pivotally connected to the rear seat tube 222. When the rider 11 and front foot 12 rotate and fold towards the rear foot 13, the front seat tube 221 of the seat body 22 can be rotated and folded relative to the rear seat tube 222 by the seat folding drive unit 21. More specifically, the pivot axis between the seat folding drive unit 21 and the linkage 3 is the same as the pivot axis between the rear seat tube 222 and the front seat tube 221, that is, the rotation center between the rear seat tube 222 and the front seat tube 221 is also the third rotation center. Furthermore, the rear seat tube 222 is pivotally connected to the rear foot 13 and forms a fifth rotation center. The fifth rotation center and the first rotation center are spaced apart, such as... Figure 3 As shown, D5 represents the rotation center between the rear seat tube 222 and the rear foot 13. When the rider 11 and the front foot 12 rotate and fold towards the rear foot 13, with the assistance of the seat folding drive 21 and the linkage 3, the front seat tube 221 and the rear seat tube 222 of the seat body 22 rotate and fold towards each other, thereby folding the entire seat 2 together.

[0089] Please see Figure 1 In this embodiment, the rider 11 includes an upper hand 112 and a lower hand 113. The upper hand 112 and the lower hand 113 are pivotally connected. The front foot 12, the rear foot 13, and the lower hand 113 are coaxially pivotally connected and form a first rotation center. The rider 11 can be folded together by rotating and folding the upper hand 112 toward the lower hand 113.

[0090] Please continue reading. Figure 1In this embodiment, the armrest 5 is fixedly connected to the linkage 3. When the handlebar 11 and front foot 12 of the frame 1 rotate and fold towards the rear foot 13, the linkage 3 can be driven to swing, thereby driving the armrest 5 to rotate and fold through the linkage 3. Specifically, wheels 14 are pivotally connected to the bottom of the front foot 12 and the bottom of the rear foot 13.

[0091] Please see Figures 11 to 13 In this embodiment, the rear foot cover 131 of the rear foot 13 is provided with an elastic protrusion 132, and the front foot cover 121 of the front foot 12 is provided with a slot 122. By rotating and folding or unfolding the frame 1, the elastic protrusion 132 can engage or disengage from the slot 122. After the front foot 12 of the frame 1 is rotated and folded towards the rear foot 13, the elastic protrusion 132 on the rear foot cover 131 can engage in the slot 122 on the front foot cover 121, thereby locking the front foot 12 and the rear foot 13, and thus locking the frame 1. When it is necessary to unfold the frame 1, since the elastic protrusion 132 is elastic, the user can operate the front foot 12 to rotate and unfold relative to the rear foot 13. During this process, the elastic protrusion 132 of the rear foot cover 131 is subjected to force and disengages from the slot 122 of the front foot cover 121, thereby releasing the front foot 12 and the rear foot 13.

[0092] Please see Figures 4 to 6The frame locking mechanism 102 includes a sliding member 6, a frame unfolding locking member 7, and a release drive mechanism 8. The rider 11's rider cover 111 has a rider locking hole 114, and the front foot cover 121 of the front foot 12 has a front foot locking hole 123. The sliding member 6 is slidably disposed in the rear foot 13. The frame unfolding locking member 7 is disposed on the sliding member 6 and engages in the rider locking hole 114 and the front foot locking hole 123. The sliding member 6 has a slot 62 for the pivot shafts of the rider 11, the front foot 12, and the rear foot 13 to pass through. The release drive mechanism 8 is connected to the sliding member 6. The release drive mechanism 8 drives the sliding member 6 to slide together with the frame unfolding locking member 7, so that the frame unfolding locking member 7 exits the rider locking hole 114 and the front foot locking hole 123, thereby releasing the frame 1. Specifically, the rider 11 is provided with a rider connector 115, which is fixedly connected to the rider cover 111. A rider locking hole 114 is formed on the rider connector 115. Both the rider connector 115 and the rider cover 111 are part of the rider 11. The front foot 12 is provided with a front foot connector 124, which is fixedly connected to the front foot cover 121. A front foot locking hole 123 is formed on the front foot connector 124. The outer side of 121 is connected to a cover 125, wherein the front foot connector 124 and the front foot cover 121 are both part of the front foot 12; the rear foot 13 is provided with a rear foot connector 134, which is fixedly connected to the rear foot cover 131. The rear foot connector 134 is provided with a limiting groove 133, and the frame unfolding locking member 7 is slidably inserted into the limiting groove 133. The rear foot connector 134 and the rear foot cover 131 are both part of the rear foot 13.

[0093] Please continue reading. Figures 4 to 6In this embodiment, the release drive mechanism 8 includes a release drive member 81 and a first traction member 82. The release drive member 81 is slidably disposed on the rider connector 115 of the rider 11, but is not limited thereto. In other embodiments, the release drive member 81 may also be slidably disposed on other positions of the rider 11. The release drive member 81 is provided with a first inclined surface 811, and the sliding member 6 is provided with a second inclined surface 61. The first inclined surface 811 and the second inclined surface 61 cooperate and abut against each other. The first traction member 82 is connected to the release drive member 81. The release drive member 81 is pulled by the first traction member 82, causing the release drive member 81 to slide. Under the cooperation of the first inclined surface 811 and the second inclined surface 61, the sliding member 6 is driven to slide together with the frame unfolding locking member 7, so that the frame unfolding locking member 7 exits the rider locking hole 114 and the front foot locking hole 123, thereby releasing the frame 1, so that the rider 11 and the front foot 12 can rotate and fold in the direction of the rear foot 13. However, the structure of the release drive mechanism 8 is not limited to this. For example, the release drive mechanism 8 may only have a release drive member 81, with one end of the release drive member 81 protruding from the outside of the rider 11. The release drive member 81 can be directly driven to slide, thereby causing the sliding member 6 and the frame unfolding locking member 7 to slide together. Specifically, the rider connector 115 of the rider 11 has a sliding groove 116, and the release drive member 81 is slidably engaged in the sliding groove 116. The first traction member 82 pulls the release drive member 81, causing the release drive member 81 to slide along the sliding groove 116. At the same time, the sliding groove 116 can limit the release drive member 81. Furthermore, the release drive mechanism 8 also includes a release operation mechanism 83, which is disposed on the rider 11. The first traction member 82 is connected to the release operation mechanism 83, and the first traction member 82 is pulled by operating the release operation mechanism 83. Since the release mechanism 83 is existing technology, it will not be elaborated here.

[0094] Please continue reading Figures 4 to 6 The release drive mechanism 8 further includes a first elastic reset member 84 for resetting the frame deployment locking member 7. The first elastic reset member 84 is disposed between one of the frame deployment locking member 7 and the sliding member 6 and the rear foot 13. In this embodiment, the first elastic reset member 84 is disposed between the sliding member 6 and the rear foot 13. When the first traction member 82 is pulled by the release operation mechanism 83, the first traction member 82 pulls the release drive member 81 to slide along the sliding groove 116, thereby driving the sliding member 6 to slide, and the sliding member 6 compresses the first elastic reset member 84. When the release operation mechanism 83 is released, the sliding member can be reset under the action of the elastic restoring force of the first elastic reset member 84. However, the placement of the first elastic reset member 84 is not limited to this.

[0095] Please see Figures 7 to 10The backrest release mechanism 103 includes a backrest locking member 9. The backrest part 4 is pivotally connected to the frame 1. Specifically, the backrest part 4 is pivotally connected to the seat part 2 on the frame 1. The backrest locking member 9 is engaged between the frame 1 and the backrest part 4. The release drive mechanism 8 is connected to the backrest locking member 9. The release drive mechanism 8 drives the backrest locking member 9 to slide, so that the backrest locking member 9 disengages from the engagement with the backrest part 4, thereby releasing the backrest part 4. At this time, the backrest locking member 9 is still engaged with the seat part 2 of the frame 1.

[0096] Please continue reading. Figures 7 to 10 In this embodiment, a positioning member 23 is provided on the seat portion 2 of the frame 1, and the backrest portion 4 is pivotally connected to the positioning member 23. A backrest locking member 9 is engaged between the positioning member 23 and the backrest portion 4. The positioning member 23 is fixedly connected to the rear seat tube portion 222 of the seat portion 2. Specifically, a first internal gear 231 is provided on the inner side of the positioning member 23, a second internal gear 421 is provided on the inner side of the backrest portion 4, and an external gear 91 is provided on the backrest locking member 9. The external gear 91 is engaged with both the first internal gear 231 and the second internal gear 421. The backrest locking member 9 is driven to slide towards the first internal gear 231 by the release drive mechanism 8, thereby releasing the backrest portion 4 from its engagement with the second internal gear 421 and allowing the backrest portion 4 to rotate and fold relative to the seat portion 2.

[0097] Please see Figure 8 and Figure 10 In this embodiment, the backrest part 4 includes a backrest body 41 and a backrest fixing member 42. The backrest body 41 and the backrest fixing member 42 are fixedly connected. The second internal gear 421 is disposed on the inner side of the backrest fixing member 42. The backrest fixing member 42 is pivotally connected to the positioning member 23. The pivot shaft between the backrest fixing member 42 and the positioning member 23 of the backrest part 4 passes through the backrest locking member 9.

[0098] Please continue reading. Figure 8 and Figure 10In this embodiment, the release drive mechanism 8 further includes a back-retracting drive member 85, which is in contact with the back-locking member 9. The back-retracting drive member 85 slides and pushes the back-locking member 9, causing the back-locking member 9 to move and disengage from the back-retracting part 4. Specifically, the back-retracting drive member 85 has a third inclined surface 851, and the back-locking member 9 is in contact with the third inclined surface 851. The back-retracting drive member 85 can drive the back-locking member 9 to move through the third inclined surface 851, causing the back-locking member 9 to disengage from the back-retracting part 4. The back-locking member 9 may also have a fourth inclined surface, which engages with the third inclined surface 851 of the back-retracting drive member 85. However, this is not a limitation. For example, the backrest retraction drive 85 can be disposed on the backrest fixing member 42. By pressing the backrest retraction drive 85, the backrest retraction drive 85 pushes the backrest locking member 9 to move and disengage from its engagement with the backrest part 4. More specifically, the backrest locking member 9 includes an engaging part 92 and a fixing part 93. The engaging part 92 engages between the frame 1 and the backrest part 4, and the engaging part 92 is fixedly connected to the fixing part 93. The backrest retraction drive 85 is disposed between the engaging part 92 and the fixing part 93, and the fixing part 93 is in contact with the third inclined surface 851. By sliding the backrest retraction drive 85 to push the fixing part 93 of the backrest locking member 9, the fixing part 93 moves together with the engaging part 92, thereby causing the engaging part 92 to disengage from its engagement with the second internal gear 421 of the backrest fixing member 42.

[0099] Please continue reading Figure 8 and Figure 10In this embodiment, the release drive mechanism 8 further includes a second traction member 86, which is connected to and can pull the backrest retraction drive member 85. By pulling the second traction member 86, the backrest retraction drive member 85 is moved. Further, the release operation mechanism 83 is connected to the second traction member 86, which passes through a hole in the rear seat tube portion 222 and is connected to the backrest retraction drive member 85. By operating the release operation mechanism 83, the second traction member 86 is pulled. Specifically, the release mechanism 83 can be equipped with a steel wire, one end of which is divided into two parts: a first traction member 82 and a second traction member 86. By operating the other end of the steel wire, the first traction member 82 and the second traction member 86 can be pulled simultaneously. This causes the frame locking mechanism 102 to release the frame 1, while the backrest release mechanism 103 releases the backrest 4. This allows the front legs 12 and handlebars 11 of the frame 1 to rotate and fold towards the rear legs 13, and also causes the seat 2 to rotate and fold. At the same time, the operable backrest 4 also rotates and folds, thereby folding the entire stroller 100. Furthermore, the release drive mechanism 8 also includes a second elastic reset member 87 for resetting the backrest locking member 9. The second elastic reset member 87 is disposed between the backrest locking member 9 and the frame 1. Specifically, the second elastic reset member 87 is disposed between the fixing part 93 and the positioning member 23 of the backrest locking member 9. When the second traction member 86 is pulled, the second traction member 86 pulls the backrest retraction drive member 85, thereby pushing the backrest locking member 9 to move, so that the engaging part 92 of the backrest locking member 9 moves out of engagement with the second internal gear 421 of the backrest fixing member 42 and compresses the second elastic reset member 87. When the second traction member 86 is released, the engaging part 92 of the backrest locking member 9 can be reset under the action of the second elastic reset member 87, so that the engaging part 92 of the backrest locking member 9 re-engages with the second internal gear 421, thereby locking the backrest part 4.

[0100] Combination Figures 1 to 13 The specific working principle of the stroller 100 of the present invention is as follows:

[0101] When the stroller 100 needs to be folded, the first traction member 82 is pulled by the release mechanism 83. The first traction member 82 pulls the release drive member 81 to slide along the sliding groove 116, so that the release drive member 81 drives the sliding member 6 to slide through the first inclined surface 811. The sliding member 6 drives the frame unfolding locking member 7 to disengage from the handrail locking hole 114 and the front foot locking hole 123, thereby releasing the frame 1, so that the handrail 11 and the front foot 12 can be rotated and folded in the direction of the rear foot 13. When the handrail 11 and the front foot 12 can be rotated and folded in the direction of the rear foot 13, with the assistance of the seat folding drive member 21 and the linkage member 3, the front seat tube 221 and the rear seat tube 222 of the seat body 22 rotate and fold in a direction closer to each other, thereby folding the entire seat part 2 together. While the release mechanism 83 pulls the first traction member 82, it also pulls the second traction member 86. The second traction member 86 pulls the backrest folding drive member 85, causing it to push the fixing part 93 of the backrest locking member 9 through the third inclined surface 851. The fixing part 93 of the backrest locking member 9 drives the engaging part 92 to move, causing the engaging part 92 to disengage from the second internal gear 421 of the backrest fixing member 42, thereby releasing the backrest part 4 and allowing it to be rotated and folded. Furthermore, the upper handle 112 of the stroller 11 can be rotated and folded towards the lower handle 113, further folding the stroller together. Finally, the entire stroller 100 can be rotated and folded to... Figure 13 The state shown.

[0102] In summary, since the stroller 100 of the present invention has a frame folding mechanism 101, the handlebar 11, front leg 12, and rear leg 13 of the frame folding mechanism 101 are coaxially pivotally connected, the front leg 12 is pivotally connected to the seat 2, and the linkage 3 is pivotally connected between the seat 2 and the handlebar 11, so that the handlebar 11, front leg 12, seat 2, and linkage 3 form a planar linkage mechanism. Therefore, by driving the handlebar 11 and front leg 12 to rotate and fold towards the rear leg 13, the seat 2 is driven to rotate and fold. Therefore, the stroller 100 of the present invention allows the frame 1 and seat 2 to be folded together, making it simple and convenient to operate and suitable for widespread use. Since the stroller 100 of the present invention has a frame locking mechanism 102, this mechanism locks the frame 11 and the front legs 12 by providing a handrail locking hole 114 on the handrail 11 and a front leg locking hole 123 on the front legs 12, and by engaging the frame unfolding locking member 7 within the handrail locking hole 114 and the front leg locking hole 123. The inability to rotate and fold towards the rear foot 13 locks the frame 1. The release mechanism 8 drives the sliding member 6, along with the frame unfolding locking member 7, to slide, causing the frame unfolding locking member 7 to disengage from the handrail locking hole 114 and the front foot locking hole 123, thereby releasing the frame 1. This allows the handrail 11 and front foot 12 to rotate and fold towards the rear foot 13. Therefore, the stroller 100 of this invention can lock and unlock the frame 1, and its structure is simple and its production cost is low. Because the stroller of this invention... The 100 has a backrest release mechanism 103, which is provided with a backrest locking member 9. The backrest locking member 9 is engaged between the frame 1 and the backrest part 4, thereby locking the backrest to the frame 1. Since the release drive mechanism 8 is connected to the backrest locking member 9, the backrest locking member 9 can be driven to slide through the release drive mechanism 8, so that the backrest locking member 9 is disengaged from the engagement with the backrest part 4, thereby releasing the backrest part 4. This allows the backrest part 4 to rotate and fold relative to the frame 1. The structure is simple and the production cost is low.

[0103] The above-disclosed examples are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are within the scope of the present invention.

Claims

1. A backrest release mechanism for releasing a backrest of a stroller, characterized in that The backrest release mechanism includes a backrest locking member and a backrest release drive mechanism. The backrest is pivotally connected to the seat of the stroller. The backrest locking member engages between the seat and the backrest. The backrest release drive mechanism is connected to the backrest locking member, and drives the backrest locking member to slide, causing the backrest locking member to disengage from the backrest, thereby releasing the backrest. The stroller's release drive mechanism for releasing the frame is connected to the back release mechanism, thereby simultaneously driving the back release mechanism to release the back part when the release drive mechanism releases the frame.

2. The backrest release mechanism of claim 1, wherein The stroller also includes a first foot, a second foot, and a handrail, wherein the first foot, the second foot, the handrail, and the seat are configured to have a foldable structure and the release drive mechanism.

3. The backrest release mechanism of claim 1, wherein The stroller also includes a first foot, a second foot, and a handrail. The first foot, the second foot, the handrail, and the seat form a foldable frame. The foldable frame has the release drive mechanism, which includes a first traction member.

4. The backrest release mechanism of claim 3, wherein The release drive mechanism includes: The backrest retraction drive unit drives the backrest locking unit to slide and disengage from the engagement with the backrest part; A second traction member, which is connected to and capable of pulling the backrest retraction drive member; and The release mechanism is connected to both the first traction member and the second traction member. By operating the release mechanism, the second traction member is pulled while the first traction member is pulled to release the frame.

5. The backrest release mechanism of claim 1, wherein The seat portion is provided with a positioning member, the backrest portion is pivotally connected to the positioning member, and the backrest locking member is engaged between the positioning member and the backrest portion.

6. The backrest release mechanism of claim 5, wherein The positioning member has a first internal gear on its inner side, the backrest has a second internal gear on its inner side, and the backrest locking member has an external gear. The external gear engages with the first internal gear and the second internal gear respectively.

7. The backrest release mechanism of claim 6, wherein The backrest includes a backrest body and a backrest fixing member. The backrest body is fixedly connected to the backrest fixing member, and the second internal gear is disposed on the inner side of the backrest fixing member.

8. The backrest release mechanism of claim 5, wherein The pivot shaft between the backrest and the positioning member passes through the backrest locking member.

9. The backrest release mechanism of claim 4, wherein The backrest retraction drive is in contact with the backrest locking member. The backrest retraction drive slides and pushes the backrest locking member to move and disengage the backrest locking member from the backrest part.

10. The backrest release mechanism of claim 4, wherein The backrest folding drive has a third inclined surface, and the backrest locking member is in contact with the third inclined surface. The backrest folding drive can drive the backrest locking member to move through the third inclined surface.

11. The backrest release mechanism of claim 4, wherein The release mechanism is located on the driver.

12. The backrest release mechanism of claim 4, wherein It also includes a second resilient reset member for resetting the back-locking member.

13. A stroller, characterized in that Includes the back-locking mechanism according to any one of claims 1 to 12.

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