Seat pocket mechanism and stroller

Abstract

The utility model discloses a seat pocket mechanism and children's push car, and it relates to the stroller technical field. Its technical scheme main points include folding joint, sit pole subassembly, handrail subassembly and backrest subassembly, and folding joint includes joint base, first joint, second joint, third joint, joint locking assembly, joint unlocking piece and angle adjusting assembly. The utility model is provided with joint locking assembly and angle adjusting assembly in folding joint respectively, and joint locking assembly and angle adjusting assembly are independent of each other, so that can realize that sit pole subassembly is unlocked to handrail subassembly and drives handrail subassembly to fold to backrest subassembly direction in the rotary folding process, can also adjust the angle of backrest subassembly alone, and the user experience is optimized, and sit pole subassembly drives the sliding contraction of umbrella pole subassembly through the connecting rod in the rotary folding process, can optimize the volume after folding, is convenient for storage, and the user experience is optimized.

Description

Technical Field

[0001] This utility model relates to the field of children's vehicle technology, and more specifically, to a seat mechanism and a children's stroller. Background Technology

[0002] A Chinese patent with authorization announcement number CN113511248B discloses a folding and locking mechanism that can be applied to a stroller frame. The stroller frame includes a backrest tube, a seat tube, a rear leg, a front leg, and a handlebar, which are connected to the folding and locking mechanism. When folding, the pivoting of the backrest tube relative to the seat tube simultaneously releases the pivoting of multiple links such as the seat tube, rear leg, front leg, and handlebar, thereby allowing multiple links to pivot freely when folding.

[0003] However, the stroller frame in the above patent still has the following problems: 1. It uses the backrest tube to start folding, which makes it impossible or difficult to adjust the angle of the backrest tube independently; 2. The handlebar tube on the stroller frame does not participate in the folding process. Folding the handlebar tube separately increases the folding action and affects the user experience. Utility Model Content

[0004] To address the shortcomings of existing technologies, one of the objectives of this utility model is to provide a seat mechanism that includes a joint locking component and an angle adjustment component within the folding joint. These components operate independently, allowing the seat post assembly to unlock the armrest assembly and fold it towards the backrest assembly during rotation and folding, while also enabling independent adjustment of the backrest assembly's angle, thus optimizing the user experience. Furthermore, during rotation and folding, the seat post assembly drives the canopy rod assembly to slide and retract via a connecting rod, optimizing the folded volume for convenient storage and further enhancing the user experience.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A seat mechanism includes a folding joint, a seat post assembly, an armrest assembly, and a backrest assembly. The folding joint includes a joint base, a first joint connected to the seat post assembly, a second joint connected to the armrest assembly, and a third joint connected to the backrest assembly. A joint locking assembly is provided between the second joint and the joint base, and a joint unlocking component is provided on the first joint; An angle adjustment component is provided between the third joint and the joint base.

[0006] Furthermore, the joint locking assembly includes a locking block and a first elastic element, a first locking groove is provided in the joint base to support the locking block and the first elastic element, and a second locking groove is provided in the second joint to cooperate with the locking block; Under the elastic force of the first elastic element, the locking block moves along the axial direction of the joint base from the first locking groove to the second locking groove, thereby achieving locking; The joint unlocking component drives the locking block to move out of the second locking slot, thereby unlocking the joint.

[0007] Furthermore, the second locking groove is provided with a movable block that contacts the locking block, and the joint unlocking component drives the locking block to move away from the second locking groove through the movable block to achieve unlocking.

[0008] Furthermore, the second locking groove is provided with a movable stop surface that cooperates with the movable block.

[0009] Furthermore, the end face of the second joint is provided with a first protrusion communicating with the second locking groove; the third joint is located between the second joint and the joint base, and the third joint is provided with a first clearance arc groove that cooperates with the first protrusion.

[0010] Furthermore, the joint unlocking component includes an unlocking plate fixedly disposed on the end face of the first joint, and the unlocking plate is provided with an unlocking drive ramp.

[0011] Furthermore, the angle adjustment assembly includes an adjustment block movably disposed within the third joint, the movement direction of the adjustment block being perpendicular to the pivot axis of the folding joint; the adjustment block is provided with an adjustment latch extending along the pivot axis and embedded in the joint base; The end face of the joint base is provided with an adjustment arc groove, and the inner circumferential side wall of the adjustment arc groove is provided with multiple slots that cooperate with the adjustment locking tongue.

[0012] Furthermore, the backrest assembly is provided with an unlocking wrench, and a cable located within the backrest assembly is provided between the unlocking wrench and the adjusting block; the angle adjusting assembly also includes a second elastic element acting on the adjusting block, the elastic force of the second elastic element causing the adjusting block to tend to remain within the slot.

[0013] Furthermore, the seat mechanism also includes a canopy rod assembly slidably disposed on the backrest assembly, and a connecting rod is provided between the first joint and the canopy rod assembly.

[0014] Another objective of this invention is to provide a stroller that includes the aforementioned seat mechanism.

[0015] In summary, this utility model has the following beneficial effects: 1. A joint locking component and an angle adjustment component are set inside the folding joint. The joint locking component and the angle adjustment component are independent of each other. This allows the seat post component to unlock the armrest component and drive the armrest component to fold towards the backrest component during the rotation and folding process. It also allows the angle of the backrest component to be adjusted independently, thus optimizing the user experience. 2. During the rotation and folding process, the seat post assembly drives the canopy rod assembly to slide and retract via a connecting rod, which optimizes the folded volume, facilitates storage, and improves the user experience; 3. A movable block is set between the unlocking plate and the locking block to transmit the driving force. This allows for control of the size of the unlocking drive ramp, which not only ensures smooth transmission of the driving force and avoids jamming due to excessive resistance, but also optimizes the rotation angle of the first joint during the unlocking process, thus achieving continuity in the rotation and folding process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the seat mechanism in Example 1. Figure 1 ; Figure 2 This is a schematic diagram of the seat mechanism in the unfolded state in Example 1; Figure 3 This is a schematic diagram of the seat mechanism in the middle folded state in Example 1; Figure 4 This is a schematic diagram of the seat mechanism in the folded state in Example 1; Figure 5 This is a schematic diagram of the folding joint in Example 1. Figure 1 ; Figure 6 This is a schematic diagram of the folding joint in Example 1. Figure 2 ; Figure 7 This is a schematic diagram of the structure of the second joint and the movable block in Example 1; Figure 8 This is a schematic diagram of the structure of the first joint and the joint unlocking component in Embodiment 1; Figure 9 This is a schematic diagram of the folding joint in Example 1. Figure 3 ; Figure 10 This is a schematic diagram of the angle adjustment component in Example 1.

[0017] In the diagram: 1. Folding joint; 11. Joint base; 111. First locking groove; 112. Adjusting arc groove; 113. Slot; 12. First joint; 121. Unlocking plate; 122. Unlocking drive ramp; 13. Second joint; 131. Second locking groove; 132. Third clearance arc groove; 133. Limiting groove; 134. First protrusion; 135. Second protrusion; 14. Third joint; 141. First clearance arc groove; 142. Second clearance arc groove; 143. Guide groove; 15. Locking block; 16. First elastic element; 17. Movable block; 171. Limiting rib; 18. Adjusting block; 181. Adjusting latch; 19. Second elastic element; 2. Seat post assembly; 3. Footrest assembly; 4. Armrest assembly; 5. Backrest assembly; 6. Canopy rod assembly; 7. Connecting rod; 8. Cable. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law. Example 1:

[0020] A seat mechanism, as shown in the figure Figures 1 to 10 It includes a folding joint 1, a seat post assembly 2, a footrest assembly 3, an armrest assembly 4, a backrest assembly 5, and a canopy rod assembly 6. The folding joint 1 includes a joint base 11, a first joint 12 connected to the seat post assembly 2, a second joint 13 connected to the armrest assembly 4, and a third joint 14 connected to the backrest assembly 5. The footrest assembly 3 is rotatably connected to the seat post assembly 2, and the canopy rod assembly 6 is slidably connected to the backrest assembly 5. A connecting rod 7 is provided between the first joint 12 and the canopy rod assembly 6. In addition, the footrest assembly 3 and the canopy rod assembly 6 can be rotated and adjusted independently.

[0021] Reference Figures 1 to 10 The first joint 12, the second joint 13, the third joint 14 and the joint base 11 are arranged sequentially along the axial direction, and the first joint 12, the second joint 13 and the third joint 14 can rotate around the same pivot axis respectively; the seat mechanism is connected to the frame through the joint base 11, so the joint base 11 of the seat mechanism is fixed during the folding process.

[0022] Reference Figures 1 to 10In this embodiment, a joint locking component is provided between the second joint 13 and the joint base 11, and a joint unlocking component is provided on the first joint 12; that is, when the first joint 12 rotates, it drives the joint unlocking component to rotate, and the joint unlocking component drives the joint locking component to unlock, so that the second joint 13 can rotate; an angle adjustment component is provided between the third joint 14 and the joint base 11, so that the angle of the backrest component 5 can be adjusted.

[0023] Reference Figures 1 to 10 In this embodiment, a joint locking component and an angle adjustment component are respectively provided in the folding joint 1. The joint locking component and the angle adjustment component are independent of each other. This allows the seat post component 2 to unlock the armrest component 4 and drive the armrest component 4 to fold towards the backrest component 5 during the rotation and folding process. It also allows the angle of the backrest component 5 to be adjusted independently, thus optimizing the user experience. Moreover, during the rotation and folding process, the seat post component 2 drives the canopy rod component 6 to slide and retract through the connecting rod 7, which can optimize the folded volume, facilitate storage, and optimize the user experience.

[0024] Reference Figures 1 to 10 Specifically, in this embodiment, the joint locking assembly includes a locking block 15 and a first elastic member 16. A first locking groove 111 is provided in the joint base 11 to support the locking block 15 and the first elastic member 16. The first locking groove 111 extends along the pivot axis of the folding joint, so the locking block 15 can move axially along the first locking groove 111. The first elastic member 16 is a spring, one end of which contacts the locking block 15, and the other end contacts the inner end face of the first locking groove 111. The first locking groove 111 has an end face opening, so the elastic force of the first elastic member 16 makes the locking block 15 tend to extend out of the end face opening.

[0025] Reference Figures 1 to 10 The second joint 13 is provided with a second locking groove 131 that cooperates with the locking block 15. When the locking block 15 extends out from the first locking groove 111 and is embedded in the second locking groove 131, the locking block 15 is simultaneously located in the first locking groove 111 and the second locking groove 131, thereby achieving locking and preventing the second joint 13 from rotating relative to the joint base 11.

[0026] Reference Figures 1 to 10 If the third joint 14 is located between the second joint 13 and the joint base 11, then the locking block 15 needs to pass through the third joint 14. In order to avoid interference, the third joint 14 is provided with a first clearance arc groove 141.

[0027] Reference Figures 1 to 10In this embodiment, the joint unlocking component includes an unlocking plate 121 fixedly disposed on the end face of the first joint 12. The unlocking plate 121 is arc-shaped and has an unlocking drive inclined surface 122. Preferably, in this embodiment, a movable block 17 that contacts the locking block 15 is also disposed in the second locking groove 131.

[0028] Reference Figures 1 to 10 The seat post assembly 2 drives the first joint 12 to rotate upward in a clockwise direction to fold. After the unlocking drive ramp 122 rotates to contact the movable block 17, the seat post assembly 2 continues to rotate, and the unlocking drive ramp 122 drives the movable block 17 and the locking block 15 to move axially. After the locking block 15 moves to disengage from the second locking groove 131, the second joint 13 can be unlocked and can rotate upward in a clockwise direction relative to the joint base 11 to fold.

[0029] Reference Figures 1 to 10 In this embodiment, a movable block 17 is provided between the unlocking plate 121 and the locking block 15. The movable block 17 is used to transmit the driving force, which allows the size of the unlocking driving ramp 122 to be controlled. This ensures that the driving force can be transmitted smoothly, avoiding jamming due to excessive resistance, and also optimizes the rotation angle of the first joint 12 during the unlocking process, achieving continuity in the rotation and folding process. Of course, in other optional embodiments, the unlocking driving ramp can also be in direct contact with the unlocking block, which is not a limitation here.

[0030] Reference Figures 1 to 10 Preferably, the end face of the second joint 13 is provided with a first protrusion 134 communicating with the second locking groove 131, and the first protrusion 134 is embedded in the first clearance arc groove 141; that is, the second locking groove 131 extends from the second joint 13 to the first protrusion 134; by using the first protrusion 134 to extend the second locking groove 131 to be close to and dock with the first locking groove 111, it can not only increase the contact length between the locking block 15 and the second locking groove 131 and improve the stability of locking, but also facilitate the locking block 15 to be quickly inserted into the second locking groove 131 during the reset process and relock.

[0031] Reference Figures 1 to 10 Preferably, the sidewalls of the movable block 17 are symmetrically provided with limiting ribs 171, and the inner sidewall of the second locking groove 131 is provided with a limiting groove 133 that cooperates with the limiting ribs 171; one end of the limiting groove 133 is open and the other end is closed, and the closed inner end face forms a moving stop surface; under the elastic force of the first elastic member 16, the locking block 15 drives the movable block 17 to move until the limiting ribs 171 contact the moving stop surface; that is, when the seat mechanism is in the unfolded state, the limiting ribs 171 contact the moving stop surface, thereby maintaining stability.

[0032] Reference Figures 1 to 10Specifically, the end face of the second joint 13 is provided with a third clearance arc groove 132 that cooperates with the unlocking plate 121, and the third clearance arc groove 132 communicates with the second locking groove 131; the unlocking plate 121 is embedded into the third clearance arc groove 132, thereby contacting the movable block 17 in the second locking groove 131 and driving the movable block 17 to move; preferably, the end face of the second joint 13 is provided with a second protrusion 135 that communicates with the third clearance arc groove 132, and the third joint 14 is provided with a second clearance arc groove 142 that cooperates with the second protrusion 135, and the second clearance arc groove 142 communicates with the first clearance arc groove 141.

[0033] Reference Figures 1 to 10 When the first joint 12 rotates, the unlocking plate 121 rotates along the third clearance arc groove 132. After the unlocking drive inclined surface 122 contacts the movable block 17, it drives the movable block 17 to move to achieve unlocking. When the unlocking plate 121 contacts the end face of the third clearance arc groove 132, the second joint 13 has already been unlocked. Then the unlocking plate 121 drives the second joint 13 to rotate and fold, realizing the linkage of the folding process. In addition, the contact between the unlocking plate 121 and the end face of the third clearance arc groove 132 also plays a limiting role, preventing the seat post assembly 2 and the armrest assembly 4 from getting too close after folding.

[0034] Reference Figures 1 to 10 In this embodiment, the angle adjustment component includes an adjustment block 18 disposed within the third joint 14, and a guide groove 143 that cooperates with the adjustment block 18 is disposed within the third joint 14; that is, the adjustment block 18 can move linearly along the guide groove 143, and the direction of movement of the adjustment block 18 is perpendicular to the pivot axis of the folding joint; the adjustment block 18 extends into the backrest rod of the backrest assembly 5, and a second elastic element 19 is disposed between the adjustment block 18 and the backrest rod; the second elastic element 19 is a spring, and the elastic force of the spring causes the adjustment block 18 to tend to move downward toward the inner end face of the guide groove 143.

[0035] Reference Figures 1 to 10 The adjusting block 18 is provided with an adjusting latch 181 extending along the pivot axis and embedded in the joint base 11; the end face of the joint base 11 is provided with an adjusting arc groove 112, and the inner circumferential side wall of the adjusting arc groove 112 is provided with a plurality of slots 113 that cooperate with the adjusting latch 181.

[0036] Reference Figures 1 to 10Under the elastic force of the second elastic element 19, the adjusting latch 181 is inserted into one of its slots 113, so that the backrest assembly 5 cannot rotate relative to the joint base 11 and the backrest angle is fixed. The backrest assembly 5 is provided with an unlocking wrench (not shown in the figure), and a cable 8 located inside the backrest assembly 5 is provided between the unlocking wrench and the adjusting block 18. The driving force of the unlocking wrench is transmitted to the adjusting block 18 through the cable, so that the adjusting block 18 moves upward until the adjusting latch 181 disengages from the slot 113 and is located in the adjusting arc groove 112. The adjusting arc groove 112 provides a clearance stroke, so that the backrest assembly 5 can rotate relative to the joint base 11, thereby adjusting the backrest angle. After the backrest assembly 5 is rotated by a certain angle, the adjusting block 18 moves downward to reset under the action of the elastic force, so that the adjusting latch 181 is inserted into the corresponding slot 113, thereby maintaining the angle of the backrest assembly 5.

[0037] Reference Figures 1 to 10 In this embodiment, three slots 113 are provided, so the backrest assembly 5 has three adjustable angles; in other optional embodiments, the number of slots 113 can be adjusted as needed, and there is no limitation here; the third joint 14 is provided with a first clearance arc groove 141 and a second clearance arc groove 142, so in the unlocked state, the third joint 14 can rotate relative to the joint base 11 and independently adjust the backrest angle without being affected by other joints and components. Example 2:

[0038] A type of stroller, referring to Figures 1 to 10 It includes the seat mechanism in Embodiment 1.

Claims

1. A seat mechanism, comprising a folding joint, a seat post assembly, an armrest assembly, and a backrest assembly, wherein the folding joint comprises a joint base, a first joint connected to the seat post assembly, a second joint connected to the armrest assembly, and a third joint connected to the backrest assembly; Its features are: A joint locking assembly is provided between the second joint and the joint base, and a joint unlocking component is provided on the first joint; An angle adjustment component is provided between the third joint and the joint base.

2. The seat mechanism according to claim 1, characterized in that: The joint locking assembly includes a locking block and a first elastic element. The joint base is provided with a first locking groove that supports the locking block and the first elastic element. The second joint is provided with a second locking groove that cooperates with the locking block. Under the elastic force of the first elastic element, the locking block moves along the axial direction of the joint base from the first locking groove to the second locking groove, thereby achieving locking; The joint unlocking component drives the locking block to move out of the second locking slot, thereby unlocking the joint.

3. The seat mechanism according to claim 2, characterized in that: The second locking groove is provided with a movable block that contacts the locking block. The joint unlocking component unlocks the locking block by driving it to move away from the second locking groove through the movable block.

4. The seat mechanism according to claim 3, characterized in that: The second locking groove is provided with a movable stop surface that cooperates with the movable block.

5. The seat mechanism according to claim 1, characterized in that: The joint unlocking component includes an unlocking plate fixedly disposed on the end face of the first joint, and the unlocking plate is provided with an unlocking drive ramp.

6. The seat mechanism according to claim 1, characterized in that: The angle adjustment component includes an adjustment block disposed within the third joint, and the adjustment block is provided with an adjustment latch embedded in the joint base; The end face of the joint base is provided with an adjustment arc groove, and the inner circumferential side wall of the adjustment arc groove is provided with multiple slots that cooperate with the adjustment locking tongue.

7. The seat mechanism according to claim 6, characterized in that: The backrest assembly is equipped with an unlocking lever, and a cable located inside the backrest assembly is provided between the unlocking lever and the adjusting block.

8. The seat mechanism according to claim 1, characterized in that: The seat mechanism further includes a canopy rod assembly slidably disposed on the backrest assembly, and a connecting rod is provided between the first joint and the canopy rod assembly.

9. A child stroller, characterized in that: Includes the seat mechanism according to any one of claims 1-8.

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