Frame folding mechanism, frame locking mechanism, backrest lock release mechanism and stroller

Abstract

To provide a backrest lock releasing mechanism and a baby carriage.SOLUTION: A handle, a front leg, a seat part, and an interlock component of a frame folding mechanism configure a plane link mechanism. The handle and the front leg are driven to be rotated and folded toward a rear leg, and thus the seat part is rotated and folded in conjunction with the handle and the front leg. A frame lock mechanism is configured such that a slide component and a frame deployment lock component are slidably driven by a lock releasing drive mechanism, and thus the frame development lock mechanism is detached from a handle lock hole and a front leg lock hole, and a frame is released. As a result, the handle and the front leg can be rotated and folded toward the rear leg. A backrest lock component is disposed on a backrest lock releasing mechanism. The backrest lock component is slidably driven by the lock releasing drive mechanism, and thus the backrest lock component is released from engagement with the backrest to release the backrest. As a result, the backrest can be rotated and folded with respect to the frame.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to the technical field of baby products, and particularly to a frame folding mechanism, a frame locking mechanism, a backrest unlocking mechanism, and a baby stroller.

Background Art

[0002] As baby strollers become widely used, people's requirements for the functional requirements of baby strollers are getting higher and higher. A baby stroller is expected to not only make the baby feel comfortable and safe during use, but also be able to be folded into a small body when not in use, achieving the effects of being aesthetically pleasing, space-saving, and convenient to fold.

[0003] Existing baby strollers usually include a frame, a backrest arranged on the frame, and a seat part. When folding the baby stroller, usually, the frame, the backrest, and the seat part are operated separately to fold the frame, the backrest, and the seat part respectively. This folding method of the baby stroller has the problem that the operation is cumbersome and the folding is inconvenient.

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a folding mechanism for a baby stroller that can fold the frame and the seat part in联动.

[0005] Another object of the present invention is to provide a baby stroller having a folding mechanism for a baby stroller, and realizing the联动 folding of the frame and the seat part by the folding mechanism of the baby stroller.

[0006] Another object of the present invention is to provide a frame locking mechanism with a simple structure that can lock or unlock the frame.

[0007] Another object of the present invention is to provide a baby stroller having a frame locking mechanism, and realizing the locking of the frame by the frame locking mechanism. It should be noted that the "联动" in the original text is a Chinese term. If there is a more accurate English expression for it in the context of baby stroller mechanisms, it can be further refined. Here, a literal translation is provided first.

[0008] Another object of the present invention is to provide a backrest lock release mechanism that has a simple structure and can release the backrest.

[0009] An object of the present invention is to provide a stroller that has a backrest lock release mechanism, and that enables the release of the backrest by the backrest lock release mechanism. [Means for solving the problem]

[0010] The present invention is realized by the frame folding mechanism described in claim 1, the stroller described in claim 14, the frame locking mechanism described in claim 15, the stroller described in claim 28, the backrest lock release mechanism described in claim 30, and the stroller described in claim 42. Dependent claims relate to developments and improvements of the present invention.

[0011] As will become clearer from the following detailed description, the present invention provides a frame folding mechanism including a frame, a seat section, and a linkage component, the frame including a handle, a front leg, and a rear leg, the handle, the front leg, and the rear leg being pivotally connected coaxially to form a first center of rotation, the front leg being pivotally connected to the seat section to form a second center of rotation, one end of the linkage component being pivotally connected to the seat section to form a third center of rotation, the other end of the linkage component being pivotally connected to the handle, and the first, second, third, and fourth centers of rotation being distributed at intervals, the frame being rotated and folded, and the seat section being rotated and folded in conjunction with the linkage component.

[0012] Compared to conventional technology, in the present invention, the handle, front leg, and rear leg of the frame folding mechanism are coaxially pivot-connected, the front leg is pivot-connected to the seat, and the interlocking component is pivot-connected between the seat and the handle. As a result, the handle, front leg, seat, and interlocking component form a planar linkage mechanism, and the handle and front leg are driven to rotate and fold in the direction of the rear leg, causing the seat to rotate and fold in conjunction. Therefore, the frame folding mechanism in the present invention folds by rotating the frame and seat in conjunction, is easy and convenient to operate, and is suitable for a wide range of applications.

[0013] As will become clearer from the following detailed description, the present invention provides a stroller having the above-described frame folding mechanism, in which the wheels are pivotally connected to the bottom of the front and rear legs.

[0014] Compared to conventional technology, the stroller of the present invention has a frame folding mechanism, in which the handle, front legs, and rear legs of the frame folding mechanism are coaxially pivot-connected, the front legs are pivot-connected to the seat, and an interlocking component is pivot-connected between the seat and the handle. Thus, the handle, front legs, seat, and interlocking component form a planar linkage mechanism, and the handle and front legs are driven to rotate in the direction of the rear legs to fold, causing the seat to rotate in conjunction and fold. Therefore, the stroller of the present invention folds by rotating the frame and seat in conjunction, is easy and convenient to operate, and is suitable for a wide range of applications.

[0015] As will become clearer from the following detailed description, the frame lock mechanism in the present invention includes a frame, a sliding component, a frame deployment lock component, and a lock release drive mechanism, the frame includes a handle, a front leg, and a rear leg, the handle is provided with a handle lock hole, the front leg is provided with a front leg lock hole, the sliding component is slidably provided within the rear leg, the frame deployment lock component is provided on the sliding component, the frame deployment lock component engages with the handle lock hole and the front leg lock hole, the lock release drive mechanism is connected to the sliding component, and the lock release drive mechanism drives the sliding component and the frame deployment lock component to slide, thereby disengaging the frame deployment lock component from the handle lock hole and the front leg lock hole and releasing the frame.

[0016] Compared to conventional technology, the frame lock mechanism of the present invention provides a handle lock hole in the handle and a front leg lock hole in the front leg. By engaging the frame deployment lock component into the handle lock hole and the front leg lock hole, the handle and the front leg are locked, preventing them from being rotated and folded toward the rear leg, thus locking them to the frame. The lock release drive mechanism drives the sliding component and the frame deployment lock component to slide, disengaging the frame deployment lock component from the handle lock hole and the front leg lock hole, releasing the frame. This allows the handle and the front leg to be rotated and folded toward the rear leg. Thus, the frame lock mechanism of the present invention can lock and release the frame, has a simple structure, and low production costs.

[0017] As will become clearer from the detailed description below, the present invention provides a stroller including the frame locking mechanism described above.

[0018] Compared to conventional technology, the stroller of the present invention has a frame locking mechanism, which provides a handle lock hole in the handle and a front leg lock hole in the front leg. By engaging a frame deployment lock component into the handle lock hole and the front leg lock hole, the handle and the front leg are locked, preventing the handle and the front leg from rotating and folding toward the rear leg, thus locking them to the frame. A lock release drive mechanism drives a sliding component and a frame deployment lock component to slide, disengaging the frame deployment lock component from the handle lock hole and the front leg lock hole, releasing the frame. This allows the handle and the front leg to rotate and fold toward the rear leg. Therefore, the stroller of the present invention can be locked and released from the frame, has a simple structure, and low production costs.

[0019] As will become clearer from the following detailed description, the present invention provides a backrest lock release mechanism, the backrest lock release mechanism comprising a frame, a backrest portion, a backrest lock component, and a lock release drive mechanism, wherein the backrest portion is pivotally connected to the frame, the backrest lock component is engaged between the frame and the backrest portion, the lock release drive mechanism is connected to the backrest lock component, and the lock release drive mechanism drives the backrest lock component to slide, thereby disengaging the backrest lock component from the backrest portion and releasing the backrest portion.

[0020] Compared to conventional technology, the present invention provides a backrest locking component in the backrest lock release mechanism, which engages between the frame and the backrest to lock the backrest to the frame. The lock release drive mechanism is connected to the backrest locking component, allowing the lock release drive mechanism to drive the backrest locking component to slide, which disengages the backrest locking component from the backrest, releasing the backrest and allowing the backrest to rotate relative to the frame and be folded. The structure is simple and production costs are low.

[0021] As will be more clearly understood from the following detailed description, the present invention provides a baby stroller having the above-mentioned backrest unlocking mechanism.

[0022] Compared with the prior art, the baby stroller in the present invention has a backrest unlocking mechanism, and a backrest locking component is provided in the backrest unlocking mechanism. By engaging the backrest locking component between the frame and the backrest part, the backrest is locked to the frame. Since the unlocking driving mechanism is connected to the backrest locking component, the unlocking driving mechanism can drive the backrest locking component to slide, causing the backrest locking component to disengage from the engagement with the backrest part, releasing the backrest part, and enabling the backrest part to rotate relative to the frame and fold. The structure is simple and the production cost is low.

Brief Description of the Drawings

[0023] [Figure 1] It is a schematic diagram of the three-dimensional structure of the baby stroller of the present invention at a first angle. [Figure 2] It is a schematic diagram of the three-dimensional structure when the baby stroller of the present invention is folded. [Figure 3] It is an enlarged view of part A in FIG. 2. [Figure 4] It is a schematic diagram of the structure in which the front foot cover of the baby stroller of the present invention is separated. [Figure 5] It is a schematic diagram of the structure of the frame locking mechanism of the baby stroller of the present invention. [Figure 6] It is a schematic diagram of the structure of the handle connecting component of the baby stroller of the present invention. [Figure 7] It is a schematic diagram of the three-dimensional structure of the baby stroller of the present invention at a second angle. [Figure 8] It is a schematic diagram of the structure of the backrest unlocking mechanism of the baby stroller of the present invention. [Figure 9] It is a schematic diagram of the three-dimensional structure of the baby stroller of the present invention at a third angle. [Figure 10] It is an enlarged view of part B in FIG. 9. [Figure 11] It is a schematic diagram of the structure of the handle, front feet and rear feet of the present invention. [Figure 12] This is a schematic diagram of the structure of the forefoot cover of the present invention. [Figure 13] This is a schematic diagram of the folded structure of the stroller according to the present invention. [Modes for carrying out the invention]

[0024] Further descriptions are provided below in conjunction with embodiments and accompanying drawings to illustrate in detail the technical content and structural features of the present invention.

[0025] Referring to Figures 1 to 5 and Figure 8, the stroller 100 in the present invention includes a frame 1, a seat 2, a backrest 4, a handrail 5, a frame folding mechanism 101, a frame lock mechanism 102, and a backrest lock release mechanism 103. The seat 2 is provided on the frame 1 and is used for the baby to sit on, the backrest 4 is provided on the seat 2 and is used for the baby to lean against, the frame folding mechanism 101 is provided between the frame 1 and the seat 2 and is used to fold the frame 1 and the seat 2 in conjunction, the frame lock mechanism 102 is provided inside the frame 1 and is used to lock or release the frame 1, and the backrest lock release mechanism 103 is provided between the backrest 4 and the seat 2 and is used to lock and release the backrest, thereby allowing the backrest to be rotated and folded.

[0026] Referring to Figures 1 to 3, the frame folding mechanism 101 includes an interlocking component 3. The frame 1 includes a handle 11, a front leg 12, and a rear leg 13. The handle 11, the front leg 12, and the rear leg 13 are pivotally connected to form a first rotation center D1. The front leg 12 and the seat 2 are pivotally connected to form a second rotation center D2. One end of the interlocking component 3 is pivotally connected to the seat 2 to form a third rotation center D3. The other end of the interlocking component 3 is pivotally connected to the handle 11 to form a fourth rotation center D4. The first, second, third, and fourth rotation centers are distributed at intervals from each other. By rotating and folding the frame 1, the interlocking component 3 rotates and folds the seat 2. As shown in Figure 3, D1 indicates a first center of rotation formed by the coaxial pivot connection of the handle 11, front leg 12, and rear leg 13; D2 indicates a second center of rotation generated by the pivot connection of the front leg 12 and the seat 2; D3 indicates a third center of rotation formed by the pivot connection of the interlocking component 3 and the seat 2; and D4 indicates a fourth center of rotation formed by the pivot connection of the interlocking component 3 and the handle 11. The handle 11, front leg 12, seat 2, and interlocking component 3 constitute a planar linkage mechanism, so that the handle 11 and front leg 12 are driven to rotate and fold in the direction of the rear leg 13, thereby rotating and folding the seat 2 in conjunction. Thus, when the frame 1 is rotated and folded, the seat 2 is folded in conjunction. Similarly, by rotating and folding the seat 2, the frame 1 can be folded in conjunction, and the folding method is not limited to this. Specifically, a handle cover 111 is provided at one end of the handle 11, a front leg cover 121 is provided at one end of the front leg 12, and a rear leg cover 131 is provided at one end of the rear leg 13. The handle cover 111, the front leg cover 121, and the rear leg cover 131 are pivotally connected coaxially to form a first center of rotation D1. The rear leg cover 131 is located between the front leg cover 121 and the handle cover 111, and the interlocking component 3 is pivotally connected to the handle cover 111, away from the first center of rotation.

[0027] Referring to Figures 2 and 3, in this embodiment, the seat section 2 includes a seat folding drive component 21 and a seat body 22. One end of the seat folding drive component 21 is pivotally connected to the front leg 12, and the center of rotation between the seat folding drive component 21 and the front leg 12 is the second center of rotation D2. The other end of the seat folding drive component 21 is pivotally connected to the interlocking component 3, and the center of rotation between the seat folding drive component 21 and the interlocking component 3 is the third center of rotation D3. The seat body 22 is fixedly connected to the seat folding drive component 21. Specifically, the seat folding drive component 21 includes a first folding drive unit 211 and a second folding drive unit 212 formed by bending and extending from one end of the first folding drive unit 211. The seat body 22 is connected to the first folding drive unit 211 and the second folding drive unit 212, and the bent portion between the first folding drive unit 211 and the second folding drive unit 212 is pivotally connected to the front leg 12. Furthermore, the seat body 22 includes a front seat tube section 221 and a rear seat tube section 222. The front seat tube section 221 is connected to the first folding drive unit 211 and the second folding drive unit 212, respectively, and the front seat tube section 221 is pivotally connected to the rear seat tube section 222. When the handle 11 and front legs 12 are rotated toward the rear legs 13 to fold, the seat folding drive component 21 allows the front seat tube section 221 of the seat body 22 to rotate toward the rear seat tube section 222 to fold. Specifically, the pivot connection axis between the seat folding drive component 21 and the interlocking component 3 is the same as the pivot connection axis between the rear seat tube section 222 and the front seat tube section 221; that is, the center of rotation between the rear seat tube section 222 and the front seat tube section 221 is the third center of rotation. Furthermore, the rear seat tube section 222 is pivotally connected to the rear legs 13 to form a fifth center of rotation, and the fifth center of rotation and the first center of rotation are distributed with a gap between them, and as shown in Figure 3, D5 indicates the center of rotation between the rear seat tube section 222 and the rear legs 13. When the handle 11 and front legs 12 are rotated toward the rear legs 13 to fold the seat, the operation of the seat folding drive component 21 and the interlocking component 3 causes the front seat tube section 221 and the rear seat tube section 222 of the seat body 22 to rotate toward each other and fold, thereby folding the entire seat section 2.

[0028] Referring to Figure 1, in this embodiment, the handle 11 includes an upper handle portion 112 and a lower handle portion 113. The upper handle portion 112 is pivotally connected to the lower handle portion 113, and the front leg 12, rear leg 13, and lower handle portion 113 are pivotally connected coaxially to form a first center of rotation. The handle 11 can be folded by rotating the upper handle portion 112 toward the lower handle portion 113.

[0029] Referring to Figure 1, in this embodiment, the handrail section 5 is fixedly connected to the interlocking component 3. When the handle 11 and front legs 12 of the frame 1 are rotated toward the rear legs 13 to fold it, the interlocking component 3 swings, and the interlocking component 3 rotates the handrail section 5 to fold it. Specifically, wheels 14 are pivotally connected to the bottom of the front legs 12 and the bottom of the rear legs 13.

[0030] Referring to Figures 11 to 13, in this embodiment, an elastic boss 132 is provided on the rear leg cover 131 of the rear leg 13, and an engagement groove 122 is provided on the front leg cover 121 of the front leg 12. By rotating the frame 1 to fold or unfold it, the elastic boss 132 engages with the engagement groove 122 or disengages from the engagement groove 122. After the front leg 12 of the frame 1 is rotated toward the rear leg 13 and folded, the elastic boss 132 of the rear leg cover 131 engages with the engagement groove 122 of the front leg cover 121, locking the front leg 12 and the rear leg 13, and further locking the frame 1. When it is necessary to unfold the frame 1, the elastic boss 132 is elastic, so the front leg 12 is manipulated to rotate toward the rear leg 13 and unfold it. In this process, the elastic boss 132 of the rear leg cover 131 receives force and disengages from the engagement groove 122 of the front leg cover 121, releasing the front leg 12 and the rear leg 13.

[0031] Referring to Figures 4 to 6, the frame lock mechanism 102 includes a sliding part 6, a frame deployment lock part 7, and a lock release drive mechanism 8. A handle lock hole 114 is provided in the handle cover 111 of the handle 11, and a front leg lock hole 123 is provided in the front leg cover 121 of the front leg 12. The sliding part 6 is slidably provided within the rear leg 13, and the frame deployment lock part 7 is provided on the sliding part 6. The frame deployment lock part 7 engages with the handle lock hole 114 and the front leg lock hole 123. The sliding part 6 is provided with a slot hole 62 through which the pivot connection shafts of the handle 11, the front leg 12, and the rear leg 13 pass. The lock release drive mechanism 8 is connected to the sliding part 6, and the lock release drive mechanism 8 drives the sliding part 6 and the frame deployment lock part 7 to slide, thereby disengaging the frame deployment lock part 7 from the handle lock hole 114 and the front leg lock hole 123, and releasing the frame 1. Specifically, a handle connecting part 115 is provided on the handle 11, the handle connecting part 115 is fixedly connected to the handle cover 111, and a handle lock hole 114 is provided on the handle connecting part 115, where the handle connecting part 115 and the handle cover 111 belong to a part of the handle 11, a front leg connecting part 124 is provided on the front leg 12, the front leg connecting part 124 is fixedly connected to the front leg cover 121, and a front leg lock hole 123 is provided on the front leg connecting part 124, A decorative cover 125 is connected to the outside of the leg cover 121, where the front leg connecting part 124 and the front leg cover 121 belong to a part of the front leg 12, a rear leg connecting part 134 is provided on the rear leg 13, the rear leg connecting part 134 is fixedly connected to the rear leg cover 131, the rear leg connecting part 134 is provided with a position limiting groove 133, and the frame deployment lock part 7 slides through the position limiting groove 133, where the rear leg connecting part 134 and the rear leg cover 131 belong to a part of the rear leg 13.

[0032] Referring to Figures 4 to 6, in this embodiment, the lock release drive mechanism 8 includes a lock release drive component 81 and a first traction component 82, the lock release drive component 81 is slidably mounted on the handle connecting component 115 of the handle 11, but is not limited thereto, and in other embodiments, the lock release drive component 81 may be slidably mounted at other positions on the handle 11, the lock release drive component 81 is provided with a first inclined surface 811, the slide component 6 is provided with a second inclined surface 61, the first inclined surface 811 is in contact with the second inclined surface 61, The first towing component 82 is connected to the lock release drive component 81, and when the first towing component 82 pulls the lock release drive component 81, the lock release drive component 81 slides, and the movement of the first inclined surface 811 and the second inclined surface 61 drives the sliding component 6 and the frame deployment lock component 7 to slide, causing the frame deployment lock component 7 to disengage from the handle lock hole 114 and the front leg lock hole 123, releasing the frame 1, thereby allowing the handle 11 and front legs 12 to rotate toward the rear legs 13 and be folded. The structure of the lock release drive mechanism 8 is not limited to this, and for example, the lock release drive mechanism 8 may be provided with only the lock release drive component 81, and one end of the lock release drive component 81 protrudes to the outside of the handle 11, and by directly driving the lock release drive component 81 to slide, the sliding component 6 and the frame deployment lock component 7 can be slid. Specifically, a slide groove 116 is provided in the handle connection part 115 of the handle 11, and the lock release drive part 81 is provided so as to be slidably engaged within the slide groove 116. When the first traction part 82 pulls the lock release drive part 81, the lock release drive part 81 slides along the slide groove 116, and the slide groove 116 also limits the position of the lock release drive part 81. Furthermore, the lock release drive mechanism 8 further includes a lock release operation mechanism 83, which is provided on the handle 11, and the first traction part 82 is connected to the lock release operation mechanism 83. The lock release operation mechanism 83 is operated to pull the first traction part 82. Since the lock release operation mechanism 83 is of prior art, its explanation is omitted here.

[0033] Referring to Figures 4 to 6, the lock release drive mechanism 8 includes a first elastic reset component 84 for resetting the frame deployment lock component 7, the first elastic reset component 84 being located between one of the frame deployment lock component 7 and the slide component 6 and the rear leg 13. In this embodiment, the first elastic reset component 84 is located between the slide component 6 and the rear leg 13, and when the lock release operation mechanism 83 pulls the first traction component 82, the first traction component 82 pulls the lock release drive component 81 to slide along the slide groove 116, thereby driving the slide component 6 to slide, the slide component 6 compresses the first elastic reset component 84, and when the lock release operation mechanism 83 is released, the slide component is reset by the elastic restorative force of the first elastic reset component 84. The configuration of the first elastic reset component 84 is not limited thereto.

[0034] Referring to Figures 7 to 10, the backrest lock release mechanism 103 includes a backrest lock component 9. The backrest portion 4 is pivotally connected to the frame 1, specifically, the backrest portion 4 is pivotally connected to the seat portion 2 of the frame 1, the backrest lock component 9 is engaged between the frame 1 and the backrest portion 4, the lock release drive mechanism 8 is connected to the backrest lock component 9, and the lock release drive mechanism 8 drives the backrest lock component 9 to slide, thereby disengaging the backrest lock component 9 from the backrest portion 4 and releasing the backrest portion 4, at which point the backrest lock component 9 remains engaged with the seat portion 2 of the frame 1.

[0035] Referring to Figures 7 to 10, in this embodiment, a positioning component 23 is provided on the seat portion 2 of the frame 1, the backrest portion 4 is pivotally connected to the positioning component 23, and the backrest lock component 9 engages between the positioning component 23 and the backrest portion 4. Here, the positioning component 23 is fixedly connected to the rear seat tube portion 222 of the seat portion 2. Specifically, a first internal gear 231 is provided inside the positioning component 23, a second internal gear 421 is provided inside the backrest portion 4, and an external gear 91 is provided on the backrest lock component 9, with the external gear 91 engaging and connecting to the first internal gear 231 and the second internal gear 421, respectively. The lock release drive mechanism 8 drives the backrest lock component 9 to slide in the direction of the first internal gear 231, thereby disengaging the backrest lock component 9 from the second internal gear 421, releasing the backrest 4, and allowing the backrest 4 to rotate relative to the seat 2 and be folded.

[0036] Referring to Figures 8 to 10, in this embodiment, the backrest portion 4 includes a backrest body 41 and a backrest fixing component 42. The backrest body 41 is fixedly connected to the backrest fixing component 42, the second internal gear 421 is provided inside the backrest fixing component 42, the backrest fixing component 42 is pivotally connected to the positioning component 23, and the pivot connection shaft between the backrest fixing component 42 and the positioning component 23 of the backrest portion 4 passes through the backrest lock component 9.

[0037] Referring to Figures 8 to 10, in this embodiment, the lock release drive mechanism 8 further includes a backrest folding drive component 85, which is in contact with the backrest lock component 9, and the sliding of the backrest folding drive component 85 pushes the backrest lock component 9, causing the backrest lock component 9 to move and disengage from the backrest 4. Specifically, the backrest folding drive component 85 is provided with a third inclined surface 851, the backrest lock component 9 is in contact with the third inclined surface 851, and the backrest folding drive component 85 drives the backrest lock component 9 to move using the third inclined surface 851, thereby disengaging the backrest lock component 9 from the backrest 4. Here, the backrest lock component 9 may be provided on a fourth inclined surface, and the fourth inclined surface is connected to the third inclined surface 851 of the backrest folding drive component 85. However, it is not limited to this, for example, the backrest folding drive component 85 may be provided on the backrest fixing component 42, and by pushing the backrest folding drive component 85, the backrest folding drive component 85 pushes and moves the backrest lock component 9, disengaging it from the backrest 4. Specifically, the backrest lock component 9 includes an engaging portion 92 and a fixing portion 93, the engaging portion 92 is engaged between the frame 1 and the backrest 4 and is fixedly connected to the fixing portion 93, the backrest folding drive component 85 is provided between the engaging portion 92 and the fixing portion 93 and the fixing portion 93 is in contact with the third inclined surface 851. The sliding of the backrest folding drive component 85 pushes the fixing portion 93 of the backrest lock component 9, which moves the fixing portion 93 and the engaging portion 92, thereby disengaging the engaging portion 92 from the second internal gear 421 of the backrest fixing component 42.

[0038] Referring to Figures 8 to 10, in this embodiment, the lock release drive mechanism 8 further includes a second towing component 86, the second towing component 86 being connected to the backrest folding drive component 85 and able to pull the backrest folding drive component 85. Pulling the second towing component 86 pulls the backrest folding drive component 85 so that it moves. Furthermore, the lock release operation mechanism 83 is connected to the second towing component 86, the second towing component 86 passing through a hole in the rear seat tube section 222 and connected to the backrest folding drive component 85, and the lock release operation mechanism 83 is operated to pull the second towing component 86. Specifically, a steel wire is provided in the lock release operating mechanism 83, and one end of the steel wire is divided into two, one of which is the first traction part 82 and the other is the second traction part 86. By operating the other end of the steel wire, the first traction part 82 and the second traction part 86 are pulled, releasing the frame 1 by the frame lock mechanism 102 and releasing the backrest part 4 by the backrest lock release mechanism 103. The front legs 12 and handle 11 of the frame 1 can be rotated toward the rear legs 13 to fold it, the seat part 2 can be rotated in conjunction to fold it, and the backrest part 4 can be operated to rotate and fold it, thereby folding the entire stroller 100. Furthermore, the lock release drive mechanism 8 further includes a second elastic reset part 87 for resetting the backrest lock part 9, and the second elastic reset part 87 is provided between the backrest lock part 9 and the frame 1. Specifically, the second elastic reset component 87 is provided between the fixing portion 93 and the positioning component 23 of the backrest lock component 9. When the second traction component 86 is pulled, the second traction component 86 pulls the backrest folding drive component 85, which pushes the backrest lock component 9 to move. This causes the engaging portion 92 of the backrest lock component 9 to move and disengage from the second internal gear 421 of the backrest fixing component 42, compressing the second elastic reset component 87. When the second traction component 86 is released, the engaging portion 92 of the backrest lock component 9 is reset by the action of the second elastic reset component 87, and the engaging portion 92 of the backrest lock component 9 re-engages with the second internal gear 421, locking the backrest 4.

[0039] Referring to Figures 1 to 13, the principle of operation of the stroller 100 in this invention is as follows.

[0040] When the stroller 100 needs to be folded, the lock release operating mechanism 83 pulls the first towing part 82, which in turn pulls the lock release drive part 81 to slide along the slide groove 116, which in turn drives the slide part 6 to slide using the first inclined surface 811, and the sliding of the slide part 6 causes the frame deployment lock part 7 to disengage from the handle lock hole 114 and the front leg lock hole 123, releasing the frame 1, which in turn allows the handle 11 and front legs 12 to rotate toward the rear legs 13 and be folded. When the handle 11 and front legs 12 can be rotated toward the rear legs 13 and folded, the seat folding drive part 21 and the interlocking part 3 operate to rotate the front seat tube section 221 and the rear seat tube section 222 of the seat body 22 toward each other and fold them, folding the entire seat section 2. When the lock release mechanism 83 is operated to pull the first traction part 82, the lock release mechanism 83 also pulls the second traction part 86, and the second traction part 86 pulls the backrest folding drive part 85. As a result, the third inclined surface 851 of the backrest folding drive part 85 pushes and moves the fixing part 93 of the backrest lock part 9, and the fixing part 93 of the backrest lock part 9 moves the engaging part 92, causing the engaging part 92 to disengage from the second internal gear 421 of the backrest fixing part 42, releasing the backrest part 4, which can then be rotated and folded. The handle can also be folded by rotating the upper handle part 112 of the handle 11 toward the lower handle part 113. Finally, the entire stroller 100 can be rotated and folded to the state shown in Figure 13.

[0041] As described above, the stroller 100 in the present invention has a frame folding mechanism 101, and the handle 11, front legs 12 and rear legs 13 of the frame folding mechanism 101 are pivotally connected coaxially, the front legs 12 are pivotally connected to the seat 2, and the interlocking part 3 is pivotally connected between the seat 2 and the handle 11, and the handle 11, front legs 12, seat 2 and interlocking part 3 form a planar link mechanism, so that by driving the handle 11 and front legs 12 to rotate in the direction of the rear legs 13 to fold, the seat 2 can be rotated in conjunction and folded, so the stroller 100 in the present invention can fold the frame 1 and the seat 2 in conjunction, is easy and convenient to operate and has a wide range of applications. The stroller 100 in the present invention has a frame lock mechanism 102, which has a handle lock hole 114 on the handle 11 and a front leg lock hole 123 on the front leg 12. By engaging the frame deployment lock component 7 into the handle lock hole 114 and the front leg lock hole 123, the handle 11 and the front leg 12 are locked, preventing the handle 11 and the front leg 12 from rotating toward the rear leg 13 to fold, thus achieving a lock on the frame 1. The lock release drive mechanism 8 drives the slide component 6 and the frame deployment lock component 7 to slide, causing the frame deployment lock component 7 to disengage from the handle lock hole 114 and the front leg lock hole 123, releasing the frame 1, and allowing the handle 11 and the front leg 12 to rotate toward the rear leg 13 to fold. Therefore, the stroller 100 in the present invention can lock and release the frame 1, has a simple structure, and low production costs. The stroller 100 in the present invention has a backrest lock release mechanism 103, and a backrest lock component 9 is provided on the backrest lock release mechanism 103. The backrest lock component 9 engages between the frame 1 and the backrest 4, thereby locking the backrest to the frame 1. A lock release drive mechanism 8 is connected to the backrest lock component 9. By driving the backrest lock component 9 to slide using the lock release drive mechanism 8, the backrest lock component 9 disengages from the backrest 4, releasing the backrest 4, which can then be rotated relative to the frame 1 and folded. The structure is simple and production costs are low.

[0042] The above disclosures are merely preferred examples of the present invention and cannot be used to limit the scope of the rights of the present invention. Accordingly, equivalent modifications made in accordance with the claims of the present invention fall within the scope of the present invention. [Additional note 1] A frame folding mechanism (101) including a frame (1), a seat (2), and a connecting part (3), The frame (1) includes a handle (11), a front leg (12), and a rear leg (13). The handle (11), the front leg (12), and the rear leg (13) are pivotally connected coaxially to form a first center of rotation (D1). The front leg (12) is pivotally connected to the seat (2) to form a second center of rotation (D2). One end of the interlocking component (3) is pivotally connected to the seat (2) to form a third center of rotation (D3). The other end of the interlocking component (3) is pivotally connected to the handle (11) to form a fourth center of rotation (D4). The first center of rotation (D1), the second center of rotation (D2), the third center of rotation (D3), and the fourth center of rotation (D4) are distributed at intervals from each other. By rotating and folding the frame (1), the interlocking component (3) rotates and folds the seat (2). A frame folding mechanism (101) characterized by the following. [Additional note 2] A handle cover (111) is provided at one end of the handle (11), a front foot cover (121) is provided at one end of the front foot (12), and a rear foot cover (131) is provided at one end of the rear foot (13). The handle cover (111), the front foot cover (121), and the rear foot cover (131) are coaxially pivot-connected to form the first center of rotation (D1). The frame folding mechanism (101) described in Appendix 1, characterized by the features described herein. [Additional note 3] The interlocking component (3) is pivotally connected to the handle cover (111) at an angle to the first rotation center (D1). The frame folding mechanism (101) described in Appendix 2, characterized by the features described herein. [Additional note 4] The seat section (2) includes a seat folding drive component (21) and a seat body (22). One end of the seat folding drive component (21) is pivotally connected to the front leg (12), the other end of the seat folding drive component (21) is pivotally connected to the interlocking component (3), and the seat body (22) is fixedly connected to the seat folding drive component (21). The frame folding mechanism (101) described in Appendix 1, characterized by the features described herein. [Additional note 5] The seat folding drive component (21) includes a first folding drive unit (211) and a second folding drive unit (212) formed by bending and extending from one end of the first folding drive unit (211), and the seat body (22) is connected to the first folding drive unit (211) and the second folding drive unit (212), respectively. The frame folding mechanism (101) described in Appendix 4, characterized by the above. [Additional note 6] The seat body (22) includes a front seat tube section (221) and a rear seat tube section (222), the front seat tube section (221) is connected between the first folding drive unit (211) and the second folding drive unit (212), and the front seat tube section (221) is pivotally connected to the rear seat tube section (222). The frame folding mechanism (101) described in Appendix 4, characterized by the above. [Additional note 7] The pivot connection shaft between the seat folding drive component (21) and the interlocking component (3) is the same as the pivot connection shaft between the rear seat tube section (222) and the front seat tube section (221). The frame folding mechanism (101) described in Appendix 6, characterized by the above. [Additional note 8] The rear seat tube section (222) is pivotally connected to the rear leg (13) to form a fifth center of rotation, and the fifth center of rotation and the first center of rotation (D1) are distributed with a gap between them. The frame folding mechanism (101) described in Appendix 6, characterized by the above. [Additional note 9] The handle (11) includes an upper handle portion (112) and a lower handle portion (113), the upper handle portion (112) being pivotally connected to the lower handle portion (113), and the front leg (12), the rear leg (13), and the lower handle portion (113) being coaxially pivotally connected to form the first center of rotation (D1). The frame folding mechanism (101) described in Appendix 1, characterized by the features described herein. [Additional Note 10] Further including the backrest (4), The backrest portion (4) is pivotally connected to the seat portion (2). The frame folding mechanism (101) described in Appendix 1, characterized by the features described herein. [Additional Note 11] Further including the handrail section (5), The handrail portion (5) is fixedly connected to the interlocking component (3). The frame folding mechanism (101) described in Appendix 1, characterized by the features described herein. [Additional Note 12] The aforementioned rear leg (13) is located between the front leg (12) and the handle (11). The frame folding mechanism (101) described in Appendix 1, characterized by the features described herein. [Additional Note 13] An elastic boss (132) is provided on the rear leg (13), and an engagement groove (122) is provided on the front leg (12). By rotating and folding or unfolding the frame (1), the elastic boss (132) engages with the engagement groove (122), or the elastic boss (132) disengages from the engagement groove (122). The frame folding mechanism (101) described in Appendix 1, characterized by the features described herein. [Additional Note 14] A stroller including a frame folding mechanism (101) as described in any one of the appendices 1 to 13, Wheels (14) are pivotally connected to the bottom of the front leg (12) and the bottom of the rear leg (13). A stroller characterized by the following features. [Additional Note 15] A frame lock mechanism (102) comprising a frame (1), a sliding part (6), a frame deployment lock part (7), and a lock release drive mechanism (8), The frame (1) includes a handle (11), a front leg (12), and a rear leg (13), the handle (11) is provided with a handle lock hole (114), the front leg (12) is provided with a front leg lock hole (123), the sliding part (6) is slidably mounted within the rear leg (13), the frame deployment lock part (7) is provided on the sliding part (6), the frame deployment lock part (7) is engaged with the handle lock hole (114) and the front leg lock hole (123), the lock release drive mechanism (8) is connected to the sliding part (6), and the lock release drive mechanism (8) drives the sliding part (6) and the frame deployment lock part (7) to slide, thereby disengaging the frame deployment lock part (7) from the handle lock hole (114) and the front leg lock hole (123) and releasing the frame. A frame locking mechanism (102) characterized by the following. [Additional Note 16] A handle connecting part (115) is provided on the handle (11), and the handle lock hole (114) is provided on the handle connecting part (115). The frame lock mechanism (102) described in Appendix 15, characterized by the above. [Additional Note 17] A foreleg connecting part (124) is provided on the foreleg (12), and a foreleg locking hole (123) is provided on the foreleg connecting part (124). The frame lock mechanism (102) described in Appendix 15, characterized by the above. [Additional Note 18] A rear leg connecting component (134) is provided on the rear leg (13), a position-limiting groove is provided on the rear leg connecting component (134), and the frame deployment lock component (7) is provided so as to slide through the position-limiting groove. The frame lock mechanism (102) described in Appendix 15, characterized by the above. [Additional Note 19] The lock release drive mechanism (8) includes a lock release drive component (81), which is slidably mounted on the handle (11), and is in contact with the slide component (6). By driving the lock release drive component (81) to slide, the lock release drive component (81) pushes and slides the slide component (6). The frame lock mechanism (102) described in Appendix 15, characterized by the above. [Additional Note 20] The handle (11) is provided with a slide groove (116), and the lock release drive component (81) is provided so as to be slidably engaged within the slide groove (116). The frame lock mechanism (102) described in Appendix 19, characterized by the above. [Additional Note 21] The lock release drive mechanism (8) further includes a first traction component (82), the lock release drive component (81) having a first inclined surface (811), the slide component (6) having a second inclined surface (61), the first inclined surface (811) being connected to the second inclined surface (61), the first traction component (82) being connected to the lock release drive component (81), and the first traction component (82) pulling the lock release drive component (81) thereby driving the slide component (6) and the frame deployment lock component (7) to slide. The frame lock mechanism (102) described in Appendix 19, characterized by the above. [Additional Note 22] The lock release drive mechanism (8) further includes a lock release operation mechanism (83), the lock release operation mechanism (83) being mounted on the handle (11), the first towing component (82) being connected to the lock release operation mechanism (83), and the first towing component (82) being pulled by operating the lock release operation mechanism (83). The frame lock mechanism (102) described in Appendix 21, characterized by the features described herein. [Additional note 23] The system further includes a first elastic reset component (84) for resetting the frame deployment lock component (7), the first elastic reset component (84) being provided between the frame deployment lock component (7) and one of the slide component (6) and the rear leg (13). The frame lock mechanism (102) described in Appendix 15, characterized by the above. [Additional note 24] The sliding component (6) is provided with a slot hole (62) through which the pivot connection shaft between the handle (11), the front leg (12), and the rear leg (13) passes. The frame lock mechanism (102) described in Appendix 15, characterized by the above. [Additional note 25] A handle cover (111) is provided at one end of the handle (11), a front leg cover (121) is provided at one end of the front leg (12), and a rear leg cover (131) is provided at one end of the rear leg (13). The handle cover (111), the front leg cover (121), and the rear leg cover (131) are coaxially pivot-connected. The frame lock mechanism (102) described in Appendix 15, characterized by the above. [Additional note 26] The rear foot cover (131) is located between the front foot cover (121) and the handle cover (111). The frame lock mechanism (102) described in Appendix 25, characterized by the features described herein. [Additional note 27] A decorative cover (125) is attached to the outside of the front leg cover (121). The frame lock mechanism (102) described in Appendix 26, characterized by the above. [Additional note 28] Includes a frame lock mechanism (102) as described in any one of the appendices 15 to 27. A stroller characterized by the following features. [Additional note 29] The frame (1) includes a front leg (12), a rear leg (13), and a handle (11). The handle (11), the front leg (12), and the rear leg (13) are coaxially pivot-connected, and wheels (14) are pivot-connected to the bottom of the front leg (12) and the bottom of the rear leg (13). A stroller as described in Appendix 28, characterized by the features described herein. [Additional note 30] A backrest lock release mechanism comprising a frame (1), a backrest portion (4), a backrest lock component (9), and a lock release drive mechanism (8), The backrest portion (4) is pivotally connected to the frame (1), the backrest lock component (9) is engaged between the frame (1) and the backrest portion (4), the lock release drive mechanism (8) is connected to the backrest lock component (9), and the lock release drive mechanism (8) drives the backrest lock component (9) to slide, thereby disengaging the backrest lock component (9) from the backrest portion (4) and releasing the backrest portion (4). A backrest lock release mechanism characterized by the following: [Additional Note 31] A positioning component (23) is provided on the frame (1), the backrest (4) is pivotally connected to the positioning component (23), and the backrest locking component (9) engages between the positioning component (23) and the backrest (4). The backrest lock release mechanism described in Appendix 30, characterized by the above. [Additional note 32] A first internal gear (231) is provided inside the positioning component (23), a second internal gear (421) is provided inside the backrest portion (4), and an external gear (91) is provided on the backrest locking component (9), the external gear (91) is engaged with and connected to the first internal gear (231) and the second internal gear (421), respectively. The backrest lock release mechanism described in Appendix 31, characterized by the features described herein. [Additional note 33] The backrest portion (4) includes a backrest body (41) and a backrest fixing part (42), wherein the backrest body (41) is fixedly connected to the backrest fixing part (42), and the second internal gear (421) is provided inside the backrest fixing part (42). The backrest lock release mechanism described in Appendix 32, characterized by the features described herein. [Additional note 34] The pivot connection shaft between the backrest portion (4) and the positioning component (23) passes through the backrest locking component (9). The backrest lock release mechanism described in Appendix 31, characterized by the features described herein. [Additional note 35] The frame (1) includes a seat portion (2), and the positioning component (23) is fixedly connected to the seat portion (2). The backrest lock release mechanism described in Appendix 31, characterized by the features described herein. [Additional note 36] The lock release drive mechanism (8) includes a backrest folding drive component (85), the backrest folding drive component (85) is in contact with the backrest lock component (9), and the sliding of the backrest folding drive component (85) pushes the backrest lock component (9), thereby moving the backrest lock component (9) and disengaging it from the backrest portion (4). The backrest lock release mechanism described in Appendix 30, characterized by the above. [Additional note 37] The backrest folding drive component (85) is provided with a third inclined surface (851), and the backrest lock component (9) is in contact with the third inclined surface (851). The backrest folding drive component (85) can move the backrest lock component (9) using the third inclined surface (851). The backrest lock release mechanism described in Appendix 36, characterized by the features described herein. [Additional note 38] The backrest lock component (9) includes an engaging portion (92) and a fixing portion (93), the engaging portion (92) is engaged between the frame (1) and the backrest portion (4), the engaging portion (92) is fixedly connected to the fixing portion (93), the backrest folding drive component (85) is provided between the engaging portion (92) and the fixing portion (93), and the fixing portion (93) is in contact with the third inclined surface (851). The backrest lock release mechanism described in Appendix 37, characterized by the features described herein. [Additional note 39] The lock release drive mechanism (8) further includes a second towing component (86), which is connected to the backrest folding drive component (85) and can pull the backrest folding drive component (85). The backrest lock release mechanism described in Appendix 36, characterized by the features described herein. [Additional note 40] The lock release drive mechanism (8) further includes a lock release operating mechanism (83), the lock release operating mechanism (83) being provided on the handle (11) and used to release the frame (1), the lock release operating mechanism (83) being connected to the second towing component (86), and the lock release operating mechanism (83) being operated to pull the second towing component (86). The backrest lock release mechanism described in Appendix 39, characterized by the above. [Additional note 41] The system further includes a second elastic reset component (87) for resetting the backrest lock component (9), the second elastic reset component (87) being provided between the backrest lock component (9) and the frame (1). The backrest lock release mechanism described in Appendix 30, characterized by the above. [Additional note 42] Includes a backrest lock release mechanism as described in any one of the appendices 30 to 41. A stroller characterized by the following features. [Additional note 43] The frame (1) includes a front leg (12), a rear leg (13), and a handle (11). The handle (11), the front leg (12), and the rear leg (13) are coaxially pivot-connected, and wheels (14) are pivot-connected to the bottom of the front leg (12) and the bottom of the rear leg (13). A stroller as described in Appendix 42, characterized by the features described herein.

Claims

1. A backrest lock release mechanism comprising a frame (1), a backrest portion (4), a backrest lock component (9), and a lock release drive mechanism (8), The backrest portion (4) is pivotally connected to the frame (1), the backrest lock component (9) is engaged between the frame (1) and the backrest portion (4), the lock release drive mechanism (8) is connected to the backrest lock component (9), and the lock release drive mechanism (8) drives the backrest lock component (9) to slide, thereby disengaging the backrest lock component (9) from the backrest portion (4) and releasing the backrest portion (4). The lock release drive mechanism (8) includes a backrest folding drive component (85), the backrest folding drive component (85) is in contact with the backrest lock component (9), and the sliding of the backrest folding drive component (85) pushes the backrest lock component (9), thereby moving the backrest lock component (9) and disengaging it from the backrest portion (4). The backrest folding drive component (85) is provided with a third inclined surface (851), the backrest lock component (9) is in contact with the third inclined surface (851), and the backrest folding drive component (85) can move the backrest lock component (9) using the third inclined surface (851). The backrest lock component (9) includes an engaging portion (92) and a fixing portion (93), the engaging portion (92) is engaged between the frame (1) and the backrest portion (4), the engaging portion (92) is fixedly connected to the fixing portion (93), the backrest folding drive component (85) is provided between the engaging portion (92) and the fixing portion (93), and the fixing portion (93) is in contact with the third inclined surface (851). A backrest lock release mechanism characterized by the following:

2. A positioning component (23) is provided on the frame (1), the backrest (4) is pivotally connected to the positioning component (23), and the backrest locking component (9) engages between the positioning component (23) and the backrest (4). The backrest lock release mechanism according to feature 1.

3. A first internal gear (231) is provided inside the positioning component (23), a second internal gear (421) is provided inside the backrest portion (4), and an external gear (91) is provided on the backrest locking component (9), the external gear (91) is engaged with and connected to the first internal gear (231) and the second internal gear (421), respectively. The backrest lock release mechanism according to feature 2.

4. The backrest portion (4) includes a backrest body (41) and a backrest fixing component (42), wherein the backrest body (41) is fixedly connected to the backrest fixing component (42), and the second internal gear (421) is provided inside the backrest fixing component (42). The backrest lock release mechanism according to feature 3.

5. The pivot connection shaft between the backrest portion (4) and the positioning component (23) passes through the backrest locking component (9). The backrest lock release mechanism according to feature 2.

6. The frame (1) includes a seat portion (2), and the positioning component (23) is fixedly connected to the seat portion (2). The backrest lock release mechanism according to feature 2.

7. The lock release drive mechanism (8) further includes a second towing component (86), which is connected to the backrest folding drive component (85) and can pull the backrest folding drive component (85). The backrest lock release mechanism according to feature 1.

8. The lock release drive mechanism (8) further includes a lock release operating mechanism (83), the lock release operating mechanism (83) being provided on the handle (11) of the frame (1) and used to release the frame (1), the lock release operating mechanism (83) being connected to the second towing component (86), and the lock release operating mechanism (83) being operated to pull the second towing component (86). The backrest lock release mechanism according to feature 7.

9. The system further includes a second elastic reset component (87) for resetting the backrest lock component (9), the second elastic reset component (87) being provided between the backrest lock component (9) and the frame (1). The backrest lock release mechanism according to feature 1.

10. Includes the backrest lock release mechanism described in any one of Claims 1 to 9 A stroller characterized by the following features.

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