Backrest adjusting mechanism of doll car

Abstract

The utility model discloses a backrest adjusting mechanism of a doll car. The backrest adjusting mechanism comprises a car body, a backrest, a locking structure and an operating piece, the backrest is rotatably connected to the vehicle body; the locking structure is arranged between the vehicle body and the backrest, and the locking structure is used for relatively fixing the vehicle body and the backrest or releasing the fixation between the vehicle body and the backrest; the operating part is movably arranged on the vehicle body or the backrest, the operating part is connected with the locking structure, and the locking state and the unlocking state of the locking structure can be switched when the operating part moves. According to the technical scheme, the backrest can be locked or unlocked through one-time operation of shifting the operation piece, the complexity of traditional multi-step adjustment can be effectively eliminated, the operation burden of a user is relieved, the operation efficiency of adjustment operation is improved, and therefore the backrest adjustment experience is remarkably optimized.

Description

Technical Field

[0001] This utility model relates to the field of strollers, and in particular to a stroller backrest adjustment mechanism. Background Technology

[0002] As is well known, existing chairs typically have a backrest that can rotate to adjust its support angle and effectiveness. Currently, backrest rotation adjustment is mainly achieved through mechanical levers or electric drives, but these methods are limited by cumbersome operation steps and low efficiency. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a stroller backrest adjustment mechanism that enables convenient and efficient adjustment.

[0004] According to a first aspect of the present invention, a stroller backrest adjustment mechanism includes: a vehicle body, a backrest, a locking structure, and an operating component; the backrest is rotatably connected to the vehicle body; the locking structure is disposed between the vehicle body and the backrest, and the locking structure is used to relatively fix or release the fixation between the vehicle body and the backrest; the operating component is movably disposed on the vehicle body or the backrest, the operating component is connected to the locking structure, and the operating component can switch the locked state and the unlocked state of the locking structure when it moves.

[0005] The stroller backrest adjustment mechanism according to this utility model embodiment has at least the following beneficial effects: When the backrest needs to be adjusted, the operating component can be moved to unlock the locking mechanism. Then, the backrest can be rotated relative to the stroller body, thereby achieving the purpose of adjusting the backrest. Finally, moving the operating component again will fix the backrest's position, thus completing the backrest adjustment operation.

[0006] The backrest can be locked or unlocked with a single operation of the toggle switch, effectively eliminating the complexity of traditional multi-step adjustments, thus reducing the user's workload and improving the efficiency of adjustment work, thereby significantly optimizing the backrest adjustment experience. Furthermore, in the unlocked state, the backrest can be freely rotated and adjusted to cover various backrest angle requirements, adapting to more usage scenarios and providing users with a better experience.

[0007] According to some embodiments of the present invention, the locking structure includes a locking tooth and a gear, one of the locking tooth and the gear being fixedly disposed on the vehicle body, and the other of the locking tooth and the gear being disposed on the backrest. The locking tooth can engage with the gear and thus fix the vehicle body and the backrest to each other.

[0008] According to some embodiments of the present invention, a clutch is provided between the toothed part and the gear, the clutch is provided with a clutch structure and can push the gear and the toothed part away from each other, and the operating member is connected to the clutch and can drive it to move.

[0009] According to some embodiments of the present invention, a return spring is provided between the vehicle body and the backrest, the return spring being used to push at least one of the gear and the locking tooth and to bring the gear and the locking tooth closer to each other.

[0010] According to some embodiments of the present invention, the clutch structure includes a curved surface boss and a curved surface groove, wherein the curved surface boss is movably installed in the curved surface groove; one of the curved surface boss and the curved surface groove is installed in the locking tooth portion and / or the gear, and the other of the curved surface boss and the curved surface groove is disposed in the clutch member; when the curved surface boss rotates relative to the curved surface groove, the curved surface boss and the curved surface groove push against each other through the inclined surface, causing the curved surface boss to gradually move into or gradually move out of the curved surface groove.

[0011] According to some embodiments of the present invention, the gear, the clutch, and the locking tooth are nested and connected to each other.

[0012] According to some embodiments of the present invention, the operating member is connected to a connecting rope, and the operating member is connected to the clutch member through the connecting rope and can drive it to move relative to the gear and / or the locking tooth.

[0013] According to some embodiments of the present invention, the backrest is provided with a rotating shaft, and the operating component is rotatably connected to the rotating shaft; the operating component is provided with a mounting part, and the connecting rope is provided with a first connector, the first connector being installed on the mounting part, and the mounting part being able to rotate around the rotating shaft.

[0014] According to some embodiments of this utility model, both sides of the backrest are connected to the vehicle body, and there are two locking structures respectively disposed between the two sides of the backrest and the vehicle body; there are two connecting ropes and they are connected to the locking structures one by one, and both connecting ropes are connected to the operating component.

[0015] According to some embodiments of this utility model, the operating component is installed in the middle of the backrest, and the two connecting ropes are of the same length.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the stroller backrest adjustment mechanism according to an embodiment of the present utility model;

[0019] Figure 2 for Figure 1 The diagram shown is a schematic of the stroller's backrest adjustment mechanism before backrest adjustment.

[0020] Figure 3 for Figure 1 The diagram shown illustrates the backrest adjustment mechanism of the stroller after backrest adjustment.

[0021] Figure 4 for Figure 1 A schematic diagram of the backrest adjustment mechanism of the stroller is shown.

[0022] Figure 5 for Figure 1 A schematic diagram of the locking structure of the stroller backrest adjustment mechanism is shown.

[0023] Figure 6 for Figure 1 A schematic diagram of the locking teeth of the stroller backrest adjustment mechanism is shown;

[0024] Figure 7 for Figure 1 A schematic diagram of the clutch component of the stroller's backrest adjustment mechanism is shown.

[0025] Figure 8 for Figure 1 The diagram shows the connection of the operating components of the stroller backrest adjustment mechanism;

[0026] Reference numerals: Vehicle body 100; Locking structure 300; Clutch 330; Inclined groove 335; Gear 350; Return spring 370; Clutch structure 390; Operating component 500; Rotating shaft 530; Mounting part 550; Connecting rope 700; First connector 750; Second connector 770; Backrest 900; Clamping tooth part 930; Inclined boss 950; Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Reference Figure 1 A stroller backrest adjustment mechanism includes: a stroller body 100, a backrest 900, a locking structure 300, and an operating component 500. The backrest 900 is rotatably connected to the stroller body 100. The locking structure 300 is disposed between the stroller body 100 and the backrest 900, and is used to fix or unlock the stroller body 100 and the backrest 900. The operating component 500 is movably disposed on the stroller body 100 or the backrest 900, and is connected to the locking structure 300. When the operating component 500 moves, it can switch the locked and unlocked states of the locking structure 300. When the backrest 900 needs to be adjusted, the operating component 500 can be moved to unlock the locking mechanism. Then, the backrest 900 can be rotated relative to the stroller body 100, thereby achieving the purpose of adjusting the backrest 900. Finally, moving the operating component 500 again can fix the state of the backrest 900, thus completing the adjustment operation of the backrest 900. The backrest 900 can be locked or unlocked with a single operation of the toggle switch 500, effectively eliminating the complexity of traditional multi-step adjustments, thus reducing the user's operational burden and improving the efficiency of adjustment operations. This significantly optimizes the adjustment experience of the backrest 900. Furthermore, in the unlocked state, the backrest 900 can be freely rotated and adjusted to cover various different backrest angle requirements, thereby adapting to more usage scenarios and providing users with a better experience.

[0032] In some embodiments, reference is made to Figure 5 The locking structure 300 includes a locking tooth portion 930 and a gear 350. One of the locking tooth portion 930 and the gear 350 is fixedly disposed on the vehicle body 100, and the other of the locking tooth portion 930 and the gear 350 is disposed on the backrest 900. The locking tooth portion 930 can engage with the gear 350 to fix the vehicle body 100 and the backrest 900 to each other. Since one of the locking tooth portion 930 and the gear 350 is fixed to the vehicle body 100, after the gear 350 and the locking tooth portion 930 are engaged, both will be in a fixed state relative to the vehicle body 100, thereby keeping the backrest 900 and the vehicle body 100 in a relatively fixed state and fixing the adjusted backrest 900.

[0033] It is conceivable that the locking structure 300 could also be other structures, such as using grippers to clamp or release the backrest 900 to fix it in place. The specific implementation method is not unique and can be adjusted according to the actual situation; no restrictions are placed here.

[0034] In some embodiments, reference is made to Figure 5 A clutch 330 is provided between the locking tooth portion 930 and the gear 350. The clutch 330 is provided with a clutch structure 390 and can push the gear 350 and the locking tooth portion 930 away from each other. The operating member 500 is connected to the clutch 330 and can drive its movement. After the operating member 500 drives the clutch 330 to move, and the clutch 330 pushes the gear 350 and the locking tooth portion 930 away from each other, the meshing and locking effect between them will be canceled, so that the locking tooth portion 930 can rotate relative to the gear 350, thereby allowing the backrest 900 to rotate and adjust smoothly.

[0035] In some embodiments, reference is made to Figure 5 A return spring 370 is provided between the body 100 and the backrest 900. The return spring 370 pushes at least one of the gear 350 and the locking tooth 930, bringing the gear 350 and the locking tooth 930 closer together. When the operating element 500 resets, the push spring will promptly drive the clutch 330 to return to its original position, thereby restoring the gear 350 and the locking tooth 930 to their engaged state. Therefore, after the user adjusts the backrest 900, the backrest 900 can automatically fix its state under the elastic force of the return spring 370, reducing the user's operational burden.

[0036] In some embodiments, reference is made to Figure 6 and Figure 7The clutch structure 390 includes a curved surface boss 950 and a curved surface groove 335. The curved surface boss 950 is movably installed within the curved surface groove 335. One of the curved surface boss 950 and the curved surface groove 335 is installed in the locking tooth portion 930 and / or the gear 350, and the other is disposed in the clutch member 330. When the curved surface boss 950 rotates relative to the curved surface groove 335, the curved surface boss 950 and the curved surface groove 335 push against each other through the inclined surfaces, causing the curved surface boss 950 to gradually move into or out of the curved surface groove 335. When the operating member 500 drives the clutch member 330 to rotate, the clutch member 330 will rotate relative to the locking tooth portion 930 and the gear 350, causing relative movement between the curved surface boss 950 and the curved surface groove 335. During this process, the inclined surface boss 950 will gradually leave the inclined surface groove 335 under the pushing action of the inclined surface, and push at least one of the clutch 330, the toothed part 930, and the gear 350 away from each other, thereby directly and effectively achieving the effect of separating the toothed part 930 and the gear 350, so that the backrest 900 can be rotated and adjusted.

[0037] Specifically, the inclined curved surface boss 950 is provided on the toothed part 930, and the inclined curved surface groove 335 is provided on the clutch part 330.

[0038] In some embodiments, reference is made to Figure 4 The gear 350, clutch 330, and locking tooth 930 are nested together. The nesting effect between the gear 350, clutch 330, and locking tooth 930 effectively reduces the total space occupied by the three components, thereby making the connection between the backrest 900 and the body 100 tighter and more reliable.

[0039] In some embodiments, reference is made to Figure 2 and Figure 3 The operating element 500 is connected to a connecting rope 700. The operating element 500 is connected to the clutch element 330 via the connecting rope 700 and can drive it to move relative to the gear 350 and / or the locking tooth part 930. The connecting rope 700 can connect the operating element 500 and the clutch element 330 over a long distance, so that the operating element 500 is not limited by the distance required for connection, but can be freely set on the backrest 900 or the indicated part on the body 100, thereby facilitating the user to operate the operating element 500.

[0040] In some embodiments, reference is made to Figure 8The backrest 900 is provided with a pivot 530, and the operating member 500 is rotatably connected to the pivot 530. The operating member 500 is provided with a mounting part 550, and the connecting rope 700 is provided with a first connector 750. The first connector 750 is mounted on the mounting part 550, and the mounting part 550 can rotate around the pivot 530. The pivot 530 can determine the rotation center of the operating member 500, thereby ensuring that the position of the mounting part 550 changes when the operating member 500 rotates, and thus ensuring that the mounting part 550 can drive the connecting rope 700 to move. Therefore, the clutch member 330 can be smoothly driven through the connecting rope 700.

[0041] Specifically, a second connector 770 is provided at the end of the connecting rope 700 away from the operating member 500. The second connector 770 is connected to the clutch member 330 and can drive it to rotate.

[0042] In some embodiments, reference is made to Figure 1 The backrest 900 is connected to the body 100 on both sides. Two locking structures 300 are respectively located between the backrest 900 and the body 100 on both sides. Two connecting ropes 700 are connected to each locking structure 300, and both connecting ropes 700 are connected to the operating component 500. Because the backrest 900 is connected to the body 100 on both sides, the connection between the backrest 900 and the body 100 is more stable and balanced. The locking structures 300 lock both the backrest 900 and the body 100 on both sides. When the operating component 500 moves, it simultaneously locks or unlocks the locking structures 300 via the connecting ropes 700. This ensures that the backrest 900 and the body 100 can be easily fixed in place and unlocked for adjustment.

[0043] In some embodiments, reference is made to Figure 1 The operating element 500 is installed in the middle of the backrest 900, and the two connecting ropes 700 are of the same length. The operating element 500, located in the middle of the backrest 900, allows the user to conveniently operate it from both sides of the backrest 900. Furthermore, because the connecting ropes 700 are of the same length, it effectively ensures that the locking structures 300 on both sides of the backrest 900 can lock or unlock simultaneously, ensuring smooth adjustment of the backrest 900 and allowing the user to easily fix the backrest 900 in its current position.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A stroller backrest adjustment mechanism, characterized in that, include: Vehicle body (100); A backrest (900) is rotatably connected to the vehicle body (100); A locking structure (300) is disposed between the vehicle body (100) and the backrest (900), and the locking structure (300) is used to fix or release the vehicle body (100) and the backrest (900) relative to each other; An operating element (500) is movably disposed on the vehicle body (100) or the backrest (900). The operating element (500) is connected to the locking structure (300). When the operating element (500) moves, it can switch the locked state and the unlocked state of the locking structure (300).

2. The stroller backrest adjustment mechanism as described in claim 1, characterized in that: The locking structure (300) includes a locking tooth (930) and a gear (350). One of the locking tooth (930) and the gear (350) is fixedly disposed on the vehicle body (100), and the other of the locking tooth (930) and the gear (350) is disposed on the backrest (900). The locking tooth (930) can engage with the gear (350) to fix the vehicle body (100) and the backrest (900) to each other.

3. The stroller backrest adjustment mechanism as described in claim 2, characterized in that: A clutch (330) is provided between the toothed part (930) and the gear (350). The clutch (330) is provided with a clutch structure (390) and can push the gear (350) and the toothed part (930) away from each other. The operating member (500) is connected to the clutch (330) and can drive it to move.

4. The stroller backrest adjustment mechanism as described in claim 3, characterized in that: A return spring (370) is provided between the vehicle body (100) and the backrest (900). The return spring (370) is used to push at least one of the gear (350) and the locking tooth (930) and bring the gear (350) and the locking tooth (930) closer to each other.

5. The stroller backrest adjustment mechanism as described in claim 3, characterized in that: The clutch structure (390) includes a curved surface boss (950) and a curved surface groove (335), wherein the curved surface boss (950) is movably installed in the curved surface groove (335); One of the inclined curved surface boss (950) and the inclined curved surface groove (335) is installed on the toothed part (930) and / or the gear (350), and the other of the inclined curved surface boss (950) and the inclined curved surface groove (335) is disposed on the clutch (330). When the inclined surface boss (950) rotates relative to the inclined surface groove (335), the inclined surface boss (950) and the inclined surface groove (335) push against each other through the inclined surface, causing the inclined surface boss (950) to gradually move into or out of the inclined surface groove (335).

6. The stroller backrest adjustment mechanism as described in claim 3, characterized in that: The gear (350), the clutch (330), and the locking tooth (930) are nested and connected to each other.

7. The stroller backrest adjustment mechanism as described in claim 3, characterized in that: The operating element (500) is connected to a connecting rope (700), and the operating element (500) is connected to the clutch element (330) through the connecting rope (700) and can drive it to move relative to the gear (350) and / or the locking tooth part (930).

8. The stroller backrest adjustment mechanism as described in claim 7, characterized in that: The backrest (900) is provided with a pivot (530), and the operating member (500) is rotatably connected to the pivot (530); the operating member (500) is provided with a mounting part (550), and the connecting rope (700) is provided with a first connector (750), the first connector (750) is mounted on the mounting part (550), and the mounting part (550) can rotate around the pivot (530).

9. The stroller backrest adjustment mechanism as described in claim 8, characterized in that: Both sides of the backrest (900) are connected to the vehicle body (100). There are two locking structures (300) respectively located between the two sides of the backrest (900) and the vehicle body (100). There are two connecting ropes (700) connected to the locking structures (300) one by one. Both connecting ropes (700) are connected to the operating component (500).

10. The stroller backrest adjustment mechanism as described in claim 9, characterized in that: The operating element (500) is installed in the middle of the backrest (900), and the two connecting ropes (700) are of the same length.

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