Chair body angle dual-mode adjusting structure and child safety seat

Abstract

The invention relates to the field of child safety seats, and discloses a seat body angle dual-mode adjusting structure and a child safety seat. The chair comprises a base module, an electric adjusting assembly and a manual adjusting assembly, a chair back is slidably arranged on the base module, the electric adjusting assembly comprises a sliding seat and an angle adjusting connecting plate, the sliding seat is slidably connected with the base module, the angle adjusting connecting plate and the sliding seat are connected and synchronously move, and the manual adjusting assembly is connected with the chair back. The manual adjusting assembly is suitable for being locked or unlocked with the angle adjusting connecting plate; after the manual adjusting assembly and the angle adjusting connecting plate are unlocked, the chair back can move relative to the angle adjusting connecting plate, and after the chair back moves relative to the angle adjusting connecting plate, the manual adjusting assembly and the angle adjusting connecting plate are suitable for being kept in the locked state again. The inclination angle of the chair back can be electrically adjusted and also can be manually adjusted; it is ensured that children can go out comfortably and safely in any state.

Description

Technical Field

[0001] The present invention relates to the technical field of child safety seats, and in particular to a dual-mode adjustment structure for a seat body angle and a child safety seat. Background Art

[0002] To improve the comfort of children, the backrest of a child seat can be adjusted relative to the base module. Some existing base modules are equipped with an electric adjustment mechanism for adjusting the backrest angle. However, if the electric adjustment mechanism is insufficiently powered or malfunctions, the backrest angle cannot be effectively adjusted. Summary of the Invention

[0003] In order to solve at least one aspect of the above problems, the present invention first provides a dual-mode adjustment structure for the chair body angle, including a base module, an electric adjustment component and a manual adjustment component, wherein a chair back is slidably provided on the base module, the electric adjustment component includes a sliding seat and an angle adjustment connecting plate, the sliding seat is slidably connected to the base module, the angle adjustment connecting plate is connected to the sliding seat and moves synchronously, the manual adjustment component is connected to the chair back and moves synchronously, and the manual adjustment component is suitable for locking or unlocking with the angle adjustment connecting plate; when the electric adjustment component is running and the manual adjustment component and the angle adjustment connecting plate are in a locked state, the sliding seat drives the angle adjustment connecting plate to drive the chair back to move; when the electric adjustment component is not running, the manual adjustment component and the angle adjustment connecting plate are manually driven to unlock the locking state, so that the chair back moves relative to the angle adjustment connecting plate, and after the chair back moves relative to the angle adjustment connecting plate, the manual adjustment component is suitable for maintaining the locked state with the angle adjustment connecting plate again.

[0004] Optionally, the electric adjustment assembly further includes a driving member and a transmission member, the driving member is connected to the base module, and the driving member and the sliding seat are both connected to the transmission member, the driving member is suitable for driving the transmission member to drive the sliding seat to move, and the driving member is in a self-locking state when not in operation.

[0005] Optionally, a slide rail fixing plate is fixedly mounted on the base module, a sliding groove is provided on the slide rail fixing plate, a connecting rod is provided on the chair back, and the connecting rod moves synchronously with the chair back; the connecting rod is inserted into the sliding groove to guide the tilt angle of the chair back after movement.

[0006] Optionally, a connecting shaft is provided on the sliding seat, and the connecting shaft moves synchronously with the sliding seat. A directional sliding groove is provided on the slide rail fixing plate, and the connecting shaft is inserted and slides in the directional sliding groove to drive the sliding seat to move in a directional manner.

[0007] Optionally, there are two angle adjustment connecting plates, which are respectively located on both sides of the sliding seat, and both ends of the connecting shaft protrude from the sliding seat and are connected to the two angle adjustment connecting plates. The connecting shaft is rotatably connected to the sliding seat, or the two angle adjustment connecting plates are rotatably connected to the connecting shaft.

[0008] Optionally, the manual adjustment assembly includes a manual fixing seat and a locking pin, the manual fixing seat is fixedly connected to the chair back, and the locking pin is located inside the manual fixing seat and is slidably connected to the manual fixing seat; the locking pin can extend or retract into the manual fixing seat to lock or unlock the manual fixing seat and the angle adjustment connecting plate.

[0009] Optionally, a plurality of angle shift holes are provided at intervals on the angle adjustment connecting plate, and the locking pin is suitable for being inserted into any one of the angle shift holes.

[0010] Optionally, the manual adjustment assembly further includes an adjustment handle, which is slidingly connected to the manual fixing seat and connected to the locking pin, and the adjustment handle is suitable for driving the locking pin to move.

[0011] Optionally, the locking latch is fixedly connected to an unlocking latch, the adjusting handle is provided with an unlocking slot, the unlocking latch is inserted into the unlocking slot, the unlocking slot is inclined, and the unlocking latch is inserted into the unlocking slot. When the adjusting handle moves relative to the manual fixing seat, the unlocking slot is suitable for driving the unlocking latch to drive the locking latch to move.

[0012] Compared with the prior art, the beneficial technical effects of the present invention are:

[0013] 1. The seat back tilt angle can be adjusted electrically through the electric adjustment component, and can also be adjusted manually through the manual adjustment component, forming a dual-mode adjustment. When the electric adjustment component fails to adjust the seat back tilt angle due to power shortage or other emergency situations, the user can adjust the seat back tilt angle through the manual adjustment component;

[0014] 2. If the seat back is directly fixed to the sliding seat, then manual adjustment requires that the drive component has no self-locking function. However, when the drive component is running, the angle adjustment connecting plate moves, and the seat back moves through the linkage relationship between the manual adjustment component and the angle adjustment connecting plate. When the drive component is not running or the power supply is insufficient, it can be in a self-locking state, so that the sliding seat and the angle adjustment connecting plate can remain stationary on the base module more stably. When the vehicle brakes suddenly, the seat back is not easy to overcome the restraining force of the electric adjustment component and move, thereby improving the stability of the seat back after the angle is manually adjusted.

[0015] In addition, the present invention provides a child safety seat, comprising the dual-mode adjustment structure for the seat body angle as described above.

[0016] Compared with the prior art, the child safety seat of the present invention and the above-mentioned dual-mode adjustment structure for the seat body angle have the same advantages over the prior art, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An exploded view of the base module, the electric adjustment assembly, and the manual adjustment assembly in an embodiment of the present invention;

[0018] Figure 2 This is a structural diagram of the base module, the slide rail fixing plate, and the electric adjustment assembly in an embodiment of the present invention;

[0019] Figure 3 An exploded view of an electric adjustment assembly according to an embodiment of the present invention;

[0020] Figure 4 This is a structural diagram of the angle adjustment connecting plate and the manual adjustment assembly in an embodiment of the present invention;

[0021] Figure 5 Schematic diagram of the seat back adjustment process by the electric adjustment assembly in an embodiment of the present invention;

[0022] Figure 6 An exploded view of a manual adjustment assembly in an embodiment of the present invention;

[0023] Figure 7 This is a structural diagram of a manual adjustment component in an embodiment of the present invention;

[0024] Figure 8 Schematic diagram of the chair back adjustment process by the manual adjustment assembly in an embodiment of the present invention.

[0025] Explanation of the accompanying drawings: 1. Base module; 11. Chair back; 111. Connecting rod; 12. Slide rail fixing plate; 121. Sliding groove; 122. Directional slide groove; 13. Fixed mounting seat; 14. Screw mounting seat; 2. Electric adjustment assembly; 21. Sliding seat; 211. Connecting shaft; 22. Angle adjustment connecting plate; 221. Angle gear hole; 23. Driving member; 24. Transmission member; 25. Linkage rod; 3. Manual adjustment assembly; 31. Manual fixing seat; 32. Locking pin; 33. Adjustment handle; 331. Unlocking slot; 34. Unlocking pin; 35. Spring. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following Figure 1-8 This application is described in further detail.

[0027] The drawings of the embodiments of the present invention are provided with a coordinate system XYZ, wherein the positive direction of the X axis represents the right, the negative direction of the X axis represents the left, the positive direction of the Y axis represents the front, the negative direction of the Y axis represents the back, the positive direction of the Z axis represents the top, and the negative direction of the Z axis represents the bottom.

[0028] In the first aspect, the embodiment of the present invention provides a dual-mode adjustment structure for the chair body angle, referring to Figure 1 The dual-mode adjustment structure of the chair body angle includes a base module 1, an electric adjustment component 2 and a manual adjustment component 3. A seat back 11 is slidably provided on the top of the base module 1. The electric adjustment component 2 is connected to the base module 1. The electric adjustment component 2 is suitable for driving the seat back 11 to move on the base module 1 to adjust the tilt angle. The manual adjustment component 3 is connected to the seat back 11. The manual adjustment component 3 can be locked or unlocked with the electric adjustment component 2. When the electric adjustment component 2 adjusts the tilt angle of the chair body, the manual adjustment component 3 and the electric adjustment component 2 are in a locked state to achieve linkage, thereby enabling the seat back 11 to move. When the chair body tilt angle is adjusted by the manual adjustment component 3, the manual adjustment component 3 and the electric adjustment component 2 are unlocked, and then the seat back 11 is driven to move relative to the electric adjustment component 2 and the base module 1; after the seat back 11 is moved and adjusted, the manual adjustment component 3 can be locked with the electric adjustment component 2 again. In this way, a dual-mode adjustment of electric and manual is formed. When the electric adjustment component 2 cannot adjust the tilt angle of the chair back 11 due to insufficient power or other conditions, the user can adjust the tilt angle of the chair back 11 through the manual adjustment component 3.

[0029] The front end of the base module 1 is equipped with an adjustment button, which allows the user to adjust the tilt angle of the seat back 11 through the electric adjustment component 2. In addition, the user can also control the operation of the electric adjustment component 2 to adjust the tilt angle of the seat back 11 through the corresponding app on the mobile phone or the vehicle terminal.

[0030] Reference Figure 1 and Figure 2 Two rail fixing plates 12 are bolted to the base module 1. These two rail fixing plates 12 are spaced and symmetrically arranged along the left and right sides of the base module 1. These rail fixing plates 12 are adapted to drive the seat back 11 to tilt at a predetermined angle relative to the base module 1. These rail fixing plates 12 are inserted into the interior of the seat back 11. Both rail fixing plates 12 have identical structures, and the following description will use the structure of one rail fixing plate 12 as an example.

[0031] The slide rail fixing plate 12 is provided with two sliding grooves 121 spaced apart in the front-to-back direction. Both sliding grooves 121 are inclined arcuate grooves. Since each slide rail fixing plate 12 is provided with two sliding grooves 121, two connecting rods 111 are installed on the seat back 11 at intervals. The two connecting rods 111 move synchronously with the seat back 11. The two connecting rods 111 are respectively inserted into the two sliding grooves 121. Therefore, after the seat back 11 moves, the connecting rods 111 cooperate with the sliding grooves 121 to guide the tilt of the seat back 11, causing the seat back 11 to tilt at a certain angle relative to the base module 1 after movement.

[0032] Reference Figures 1 to 3 The electric adjustment assembly 2 is located between the two slide rail fixing plates 12 and includes a sliding seat 21, an angle adjustment connecting plate 22, a driver 23, and a transmission member 24. The driver 23 is fixedly connected to the base module 1. Both the driver 23 and the sliding seat 21 are connected to the transmission member 24. The driver 23 is adapted to drive the transmission member 24 to move the sliding seat 21 relative to the base module 1. The angle adjustment connecting plate 22 is connected to the sliding seat 21 and moves synchronously. The angle adjustment connecting plate 22 is adapted to be locked or unlocked with the manual adjustment assembly 3. When the electric adjustment assembly 2 is in operation and the manual adjustment assembly 3 is locked with the angle adjustment connecting plate 22, the sliding seat 21 drives the angle adjustment connecting plate 22 to move the seat back 11. When the electric adjustment assembly 2 is not in operation, the manual adjustment assembly 3 is manually unlocked from the angle adjustment connecting plate 22, allowing the seat back 11 to move relative to the angle adjustment connecting plate 22. After the seat back 11 moves relative to the angle adjustment connecting plate 22, the manual adjustment assembly 3 is adapted to be locked with the angle adjustment connecting plate 22 again.

[0033] In this embodiment, the driving member 23 is preferably a motor; the transmission member 24 is preferably a rotating screw, thereby achieving higher transmission accuracy. In another embodiment, the driving member 23 may be a gear motor and the transmission member 24 may be a rack. A fixed mounting seat 13 is provided on the outside of the driving member 23, and the fixed mounting seat 13 is fixed to the base module 1 by bolts, thereby fixing the driving member 23 to the base module 1. The length direction of the rotating screw is the front-to-back direction of the base module 1. The motor is located behind the rotating screw. A coupling is installed on the motor shaft of the motor, and the other end of the coupling is connected to the rotating screw, thereby driving the rotating screw to rotate. The front end of the rotating screw (the end away from the motor) is connected to the screw mounting seat 14, which is fixedly connected to the base module 1 by bolts, thereby enabling the rotating screw to transmit stably. The sliding seat 21 is sleeved on the rotating screw and is rotatably connected to the rotating screw. The rotating screw can drive the sliding seat 21 to move.

[0034] Among them, in this embodiment, the motor is a motor with a self-locking function. Therefore, when the motor is not running or the power is insufficient or the angle of the seat back 11 is manually adjusted, the motor is in a locked state, so that the sliding seat 21 and the angle adjustment connecting plate 22 remain relatively stable on the base module 1. When the vehicle brakes suddenly, the seat back 11 is not easy to overcome the restraining force of the motor and the rotating screw and move, which improves the stability of the seat back 11 after the angle is manually adjusted.

[0035] Reference Figures 1 to 3 A connecting shaft 211 is inserted into the sliding seat 21. The axial direction of the connecting shaft 211 is perpendicular to the axial direction of the rotating screw, that is, the axial direction of the connecting shaft 211 is the left and right direction of the base module 1. The left and right ends of the connecting shaft 211 protrude from the sliding seat 21. The two slide rail fixing plates 12 are each provided with a directional sliding groove 122. The extension direction of the directional sliding groove 122 is consistent with the axial direction of the rotating screw. The two ends of the connecting shaft 211 are respectively inserted into the two directional sliding grooves 122. When the rotating screw drives the sliding seat 21 to move, the sliding seat 21 does not rotate relative to the rotating screw under the cooperation of the connecting shaft 211 and the directional sliding groove 122, but moves stably and directional along the extension direction of the directional sliding groove 122.

[0036] Reference Figures 2 to 5 There are two angle adjustment connecting plates 22, which are respectively located on the left and right sides of the sliding seat 21, and the two angle adjustment connecting plates 22 are located between the two slide rail fixing plates 12. The two angle adjustment connecting plates 22 are both sleeved on the connecting shaft 211, so when the sliding seat 21 moves, the two angle adjustment connecting plates 22 can move synchronously with the sliding seat 21. The connecting shaft 211 can be rotatably connected to the sliding seat 21, and the angle adjustment connecting plate 22 is fixedly connected to the connecting shaft 211; or the connecting shaft 211 is fixedly connected to the sliding seat 21, and the angle adjustment connecting plate 22 is rotatably connected to the connecting shaft 211; or the connecting shaft 211 is rotatably connected to the sliding seat 21, and the angle adjustment connecting plate 22 is rotatably connected to the connecting shaft 211. In this way, after the chair back 11 is tilted, the end of the angle adjustment connecting plate 22 locked with the manual adjustment component 3 can swing, which can ensure smoother movement of the chair back 11. In this embodiment, the connecting shaft 211 is preferably rotatably connected to the sliding seat 21 , while the angle adjustment connecting plate 22 is fixedly connected to the connecting shaft 211 .

[0037] In order to ensure the linkage of the two angle adjustment connecting plates 22 during rotation, a linkage rod 25 is provided between the two angle adjustment connecting plates 22 , and both ends of the linkage rod 25 are plug-connected to the two angle adjustment connecting plates 22 respectively.

[0038] Reference Figure 1 and Figure 4The manual adjustment assembly 3 is located at the bottom of the front end of the seat back 11 and between the two angle adjustment connecting plates 22, making it easier for the user to manually adjust the seat. A mounting slot is provided at the bottom of the front end of the seat back 11, and the manual adjustment assembly 3 is installed in the mounting slot. This makes the bottom of the front end of the seat back 11 relatively flat, without adding extra volume to the seat back 11 and interfering with its movement. When adjusting the tilt angle of the seat back 11, the seat back 11 can move more smoothly than if the manual adjustment assembly 3 were not provided.

[0039] Reference Figures 4 to 6 The manual adjustment assembly 3 includes a manual fixing seat 31, a locking latch 32, an adjustment handle 33 and an unlocking latch 34. The manual fixing seat 31 is fixedly connected to the chair back 11 by bolts, and the locking latch 32 is fixedly connected to the unlocking latch 34, and both the locking latch 32 and the unlocking latch 34 are slidably arranged inside the manual fixing seat 31. The locking latch 32 can be extended from the manual fixing seat 31 and plugged into the angle adjustment connecting plate 22 to achieve locking; the locking latch 32 can also be retracted into the manual fixing seat 31 to release the locking relationship with the angle adjustment connecting plate 22. The adjustment handle 33 is slidably connected to the manual fixing seat 31, and the unlocking latch 34 cooperates with the adjustment handle 33. After the adjustment handle 33 moves, it can drive the unlocking latch 34 to drive the locking latch 32 to move, so as to achieve locking or unlocking with the angle adjustment connecting plate 22. In another embodiment, the adjustment handle 33 and the unlocking pin 34 may not be provided, but a pull rope may be directly fixedly connected to the locking pin 32, with one end of the pull rope located outside the manual fixing seat 31, and the user may directly pull the locking pin 32 to move by the pull rope.

[0040] Reference Figures 4 to 7 Since there are two angle adjustment connecting plates 22, there are two locking pins 32 and unlocking pins 34. Each locking pin 32 and unlocking pin 34 constitute a locking unit, and the two locking units are respectively located on the left and right sides of the manual fixing seat 31. The two locking units cooperate with the two angle adjustment connecting plates 22. There are through holes on the left and right sides of the manual fixing seat 31. The two locking pins 32 are respectively inserted into the two through holes and protrude out of the through holes. A plurality of angle gear holes 221 are spaced apart on the angle adjustment connecting plate 22. After the locking pin 32 passes through the through holes, it is suitable for being inserted into any angle gear hole 221, thereby maintaining a locking relationship between the manual fixing seat 31 and the angle adjustment connecting plate 22; at the same time, after manually adjusting the tilt angle of the chair back 11, the locking pin 32 can be inserted into the corresponding angle gear hole 221.

[0041] The adjustment handle 33 is a plate-like structure positioned above the locking latch 32. The top of the unlocking latch 34 protrudes beyond the locking latch 32. A unlocking slot 331 extends through the top of the adjustment handle 33, extending obliquely. The unlocking slot 331 is inserted into the unlocking slot 331. When a forward pulling force is applied to the adjustment handle 33, the unlocking latch 34, under the action of the unlocking slot 331, drives the locking latch 32 toward the manual fixing base 31, thereby disengaging the locking latch 32 from the angle position hole 221, thereby unlocking the lock.

[0042] Reference Figures 4 to 7 A spring 35 is also provided inside the manual fixing seat 31 and is located between the two locking pins 32. A convex plate is fixed to the adjustment handle 33 and is located inside the manual fixing seat 31. One end of the spring 35 abuts against the convex plate, and the other end abuts against the inside of the manual fixing seat 31. Since a pulling force is applied to the adjustment handle 33 to move forward to unlock it, the spring 35 applies a driving force to move the adjustment handle 33 backward. When no force is applied to the adjustment handle 33, the adjustment handle 33 moves backward under the action of the spring 35, driving the locking pin 32 to insert into the angle shift hole 221 to maintain a continuous locked state, thereby improving the stability of the manual fixing seat 31 and the angle adjustment connecting plate 22 after the locking connection. In another embodiment, the spring 35 can be replaced with a V-shaped spring.

[0043] Combine Figure 1 Reference Figures 5 to 8 , among which the manual adjustment component 3 and the electric adjustment component 2 can be switched at will. If the stroke set by the electric adjustment component 2 is not greater than twice the stroke of the sliding groove 121 on the slide rail fixing plate 12 for the sliding angle of the chair back 11, there may be an extreme mode. In this extreme mode, the chair back 11 is in the most upright state under the adjustment of the electric adjustment component 2; it is in the most inclined position under the adjustment of the manual adjustment component 3. At this time, the angle of the chair back 11 needs to be manually adjusted to a relatively upright position before the electric angle mechanism adjustment is started.

[0044] The dual-mode angle adjustment structure for the chair body of the present application is implemented as follows: when the handle 33 is not adjusted and tension is applied, the locking pin 32 is inserted into the angle shift hole 221, locking the angle adjustment connecting plate 22 and the manual fixing seat 31 to achieve a linkage. When the driving member 23 drives the sliding seat 21 to move, the sliding seat 21 can drive the angle adjustment connecting plate 22 to move. The angle adjustment connecting plate 22 drives the manual fixing seat 31 to move the chair back 11. After movement, the chair back 11 tilts to a certain angle under the action of the connecting rod 111 and the sliding slot 121. When the driving member 23 is not in operation or the power supply is insufficient and manual adjustment is required, the driving member 23 enters a self-locking state, and the sliding seat 21 and the angle adjustment connecting plate 22 are all in a self-locking state. Manual adjustment does not destroy the self-locking state of the driving member 23, the sliding seat 21, and the angle adjustment connecting plate 22, allowing the chair back 11 to remain stably stationary relative to the base module 1. If the vehicle brakes suddenly, when the driving member 23 is in a self-locking state, the seat back 11 is not easy to overcome the restraining force of the driving member 23 and the transmission member 24 to move, and the electric adjustment function fails, thereby improving the safety of the seat back 11 after manual adjustment.

[0045] In addition, when adjusting manually, you only need to pull the adjustment handle 33 forward to disengage the locking pin 32 from the angle gear hole 221. After manually adjusting the inclination angle of the chair back 11, you only need to release the adjustment handle 33. The locking pin 32 will be inserted into the corresponding angle gear hole 221 under the action of the spring 35, so that the angle adjustment connecting plate 22 and the chair back 11 maintain a locked relationship. The operation is simple and convenient.

[0046] In a second aspect, another embodiment of the present invention provides a child safety seat equipped with the dual-mode adjustment structure for the seat body angle in the first aspect.

[0047] Equivalently, the components included in the "assembly," "mechanism," and "device" of the present disclosure can also be flexibly combined. They can be modularly produced according to actual conditions and assembled as a separate module; or they can be assembled separately to form a module in the present device. The division of the above components in the present disclosure is only one embodiment, for ease of reading, and not to limit the scope of protection of the present disclosure. As long as the above components are included and have the same functions, it should be understood that they are equivalent technical solutions of the present disclosure.

[0048] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present disclosure.

[0049] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first," "second," etc., may explicitly or implicitly include at least one such feature. Throughout the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0050] In this disclosure, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise expressly limited. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0051] In this disclosure, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0052] It should be noted that when an element is referred to as being “fixed to,” “disposed on,” “fixed on,” or “installed on” another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be “connected to another element,” it may be directly connected to the other element or there may be an intermediate element at the same time. Furthermore, when an element is considered to be “fixedly connected” to another element, the two may be fixed in a detachable connection manner or in a non-detachable connection manner, such as socketing, snap-fitting, integral molding, welding, etc., which can be achieved in traditional technologies and will not be repeated here.

[0053] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, 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.

[0054] The above embodiments merely illustrate several implementations of the present disclosure, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the inventive concept of the present disclosure, and all such variations and improvements fall within the scope of protection of the present disclosure.

Claims

1. A dual-mode adjustment structure for a chair body angle, characterized by: The invention comprises a base module (1), an electric adjustment component (2) and a manual adjustment component (3); a chair back (11) is slidingly provided on the base module (1); the electric adjustment component (2) comprises a sliding seat (21) and an angle adjustment connecting plate (22); the sliding seat (21) is slidingly connected to the base module (1); the angle adjustment connecting plate (22) is connected to the sliding seat (21) and moves synchronously; the manual adjustment component (3) is connected to the chair back (11) and moves synchronously; the manual adjustment component (3) is suitable for locking or unlocking with the angle adjustment connecting plate (22); when the electric adjustment component (2) is in operation, When the manual adjustment component (3) and the angle adjustment connecting plate (22) are in a locked state, the sliding seat (21) drives the angle adjustment connecting plate (22) to drive the chair back (11) to move; when the electric adjustment component (2) is not in operation, the manual adjustment component (3) and the angle adjustment connecting plate (22) are manually driven to release the locked state so that the chair back (11) moves relative to the angle adjustment connecting plate (22). After the chair back (11) moves relative to the angle adjustment connecting plate (22), the manual adjustment component (3) is adapted to maintain the locked state with the angle adjustment connecting plate (22) again.

2. The dual-mode chair body angle adjustment structure according to claim 1, characterized in that: The electric adjustment assembly (2) further comprises a driving member (23) and a transmission member (24), wherein the driving member (23) is connected to the base module (1), and the driving member (23) and the sliding seat (21) are both connected to the transmission member (24), and the driving member (23) is suitable for driving the transmission member (24) to drive the sliding seat (21) to move, and the driving member (23) is in a self-locking state when not in operation.

3. The dual-mode chair body angle adjustment structure according to claim 1, characterized in that: A slide rail fixing plate (12) is fixedly mounted on the base module (1), a slide rail fixing plate (12) is provided with a slide groove (121), a connecting rod (111) is provided on the chair back (11), and the connecting rod (111) moves synchronously with the chair back (11); the connecting rod (111) is inserted into the slide groove (121) to guide the tilt angle of the chair back (11) after movement.

4. The dual-mode chair body angle adjustment structure according to claim 3, characterized in that: The sliding seat (21) is provided with a connecting shaft (211), and the connecting shaft (211) moves synchronously with the sliding seat (21). The slide rail fixing plate (12) is provided with a directional sliding groove (122), and the connecting shaft (211) is inserted and slides in the directional sliding groove (122) to drive the sliding seat (21) to move in a directional manner.

5. The dual-mode chair body angle adjustment structure according to claim 4, characterized in that: Two angle adjustment connecting plates (22) are provided, and the two angle adjustment connecting plates (22) are respectively located on both sides of the sliding seat (21). Both ends of the connecting shaft (211) protrude from the sliding seat (21) and are connected to the two angle adjustment connecting plates (22). The connecting shaft (211) is rotatably connected to the sliding seat (21), or the two angle adjustment connecting plates (22) are rotatably connected to the connecting shaft (211).

6. The dual-mode chair body angle adjustment structure according to any one of claims 1 to 5, characterized in that: The manual adjustment assembly (3) comprises a manual fixing seat (31) and a locking pin (32), wherein the manual fixing seat (31) is fixedly connected to the chair back (11), and the locking pin (32) is located inside the manual fixing seat (31) and is slidably connected to the manual fixing seat (31); the locking pin (32) can extend or retract into the manual fixing seat (31) to lock or unlock the manual fixing seat (31) and the angle adjustment connecting plate (22).

7. The dual-mode chair body angle adjustment structure according to claim 6, characterized in that: A plurality of angle shift holes (221) are spaced apart on the angle adjustment connecting plate (22), and the locking pin (32) is suitable for being inserted into any one of the angle shift holes (221).

8. The dual-mode chair body angle adjustment structure according to claim 6, characterized in that: The manual adjustment assembly (3) further comprises an adjustment handle (33), the adjustment handle (33) being slidably connected to the manual fixing seat (31), and the adjustment handle (33) being connected to the locking pin (32), and the adjustment handle (33) being suitable for driving the locking pin (32) to move.

9. The dual-mode chair body angle adjustment structure according to claim 8, characterized in that: The locking latch (32) is fixedly connected to an unlocking latch (34); an unlocking slot (331) is provided on the adjusting handle (33); the unlocking latch (34) is inserted into the unlocking slot (331); the unlocking slot (331) is tilted; the unlocking latch (34) is inserted into the unlocking slot (331); when the adjusting handle (33) moves relative to the manual fixing seat (31), the unlocking slot (331) is suitable for driving the unlocking latch (34) to drive the locking latch (32) to move.

10. A child safety seat, characterized in that: It includes a dual-mode adjustment structure for the chair body angle as described in any one of claims 1-9.

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