Seat height adjustment mechanism, seat portion, and seat

Abstract

A seat height adjustment mechanism, a seat portion, and a seat. The seat height adjustment mechanism is configured to adjust the height of a seating surface (A220) of a seat portion (A10) of a child safety seat relative to a mounting surface (A500) of the seat portion (A10). The seat height adjustment mechanism comprises: a first adjustment surface (A350), a second adjustment surface (A360), and an adjustment member (A400). The first adjustment surface (A350) and the second adjustment surface (A360) are located on the bottom side of the seat portion (A10), and have different heights relative to a seating surface (B111); and the adjustment member (A400) is arranged on the bottom side of the seat portion (A10) and has a first position and a second position, wherein in the first position, the adjustment member (A400) abuts against the first adjustment surface (A350), and in the second position, the adjustment member (A400) abuts against the second adjustment surface (A360), and the adjustment member (A400) is switchable between the first position and the second position.

Description

Seat height adjustment mechanism, seat body and seat Technical Field

[0001] This application relates to the field of child vehicle technology, and in particular to a seat height adjustment mechanism, a seat portion having the seat height adjustment mechanism, and a seat. Background Technology

[0002] Child safety seats provide safety for children's travel and riding. To meet the needs of infants and toddlers of different ages and heights, related technologies design child safety seats to be height-adjustable. However, the height adjustment structure of child safety seats is relatively complex and costly. In addition, the connection strength between the height adjustment structure and the seat body is not strong enough, resulting in insufficient support for the child safety seat and a risk of breakage of the height adjustment structure.

[0003] In addition, among the related technologies, child safety seats also suffer from the problem of complex operation of the seat height adjustment structure. Summary of the Invention

[0004] According to various embodiments of this application, a seat height adjustment mechanism, a seat portion, and a seat are proposed.

[0005] This application provides a seat height adjustment mechanism for adjusting the height of the seating surface of a child safety seat relative to the seat mounting surface. The seat height adjustment mechanism includes:

[0006] A first adjustment surface and a second adjustment surface, located on the bottom side of the seat portion and at different heights relative to the seating surface; and

[0007] An adjustment element is provided on the underside of the seat portion and has a first position and a second position.

[0008] In the first position, the adjusting member abuts against the first adjusting surface; in the second position, the adjusting member abuts against the second adjusting surface, and the adjusting member can switch between the first position and the second position.

[0009] In some embodiments, in the first position, the adjustment member is housed within the housing of the seat portion.

[0010] In some embodiments, in the second position, the adjustment member extends beyond the underside of the seat portion toward the mounting surface.

[0011] In some embodiments, the first adjustment surface and the second adjustment surface extend along the lateral central axis in the left-right direction or the longitudinal central axis in the front-back direction of the seat portion.

[0012] In some embodiments, the adjustment member is movably positioned across or across the underside of the seat relative to the seat portion.

[0013] In some embodiments, the first adjustment surface includes two first sub-adjustment surfaces arranged symmetrically with respect to an axis on a horizontal plane, and the second adjustment surface includes two second sub-adjustment surfaces arranged symmetrically with respect to an axis on another horizontal plane.

[0014] In some embodiments, the two second sub-adjustment surfaces are located outside the two first sub-adjustment surfaces, respectively.

[0015] In some embodiments, the seat height adjustment mechanism is provided with two adjustment members, which are symmetrically arranged between opposite sidewalls on the bottom side of the seat portion with respect to the axis, for abutting against a corresponding first sub-adjustment surface in a first position and against a corresponding second sub-adjustment surface in a second position, respectively.

[0016] In some embodiments, the adjustment member has:

[0017] The support body extends along the longitudinal direction of the adjusting member to abut against the first adjusting surface at a first position and against the second adjusting surface at a second position.

[0018] In some embodiments, the adjustment member has:

[0019] Connecting columns are located at both longitudinal ends of the support body, and adjusting components can be movably installed onto the opposite sidewalls via the connecting columns.

[0020] In some embodiments, the adjusting member further has a support arm that extends substantially vertically from both ends of the support body in the longitudinal direction, and a connecting post is disposed at the free end of the support arm.

[0021] In some embodiments, the surface of the adjusting member that abuts against the adjusting surface has a complementary shape to the adjusting surface.

[0022] In some embodiments, a pair of sliding grooves are provided on each of the opposite sidewalls. The pair of sliding grooves are inclined relative to the mounting surface and symmetrically positioned relative to the axis for mounting the connecting posts of the two adjustment members, so that the two adjustment members can slide in their respective sliding grooves through their connecting posts, thereby moving between a first position and a second position.

[0023] In some embodiments, the adjusting member further includes a first positioning member, which protrudes from the surface of the supporting body for abutting against the first sub-adjusting surface or the second sub-adjusting surface. Correspondingly, a first positioning hole is provided at a corresponding position on the first sub-adjusting surface, and a second positioning hole is provided at a corresponding position on the second sub-adjusting surface. A second positioning member is provided in the first positioning hole and the second positioning hole respectively, so that the first positioning member can be released and engaged in the first positioning hole in the first position, and the first positioning member can be released and engaged in the second positioning hole in the second position.

[0024] In some embodiments, a pair of connecting holes are provided on each of the opposite sidewalls, the pair of connecting holes being symmetrically positioned relative to the axis for mounting connecting posts of two adjusting members, such that the two adjusting members can switch between a first position and a second position by rotating the connecting posts in the connecting holes.

[0025] In some embodiments, the adjustment member further comprises:

[0026] A first positioning element protrudes from the surface of the supporting body to abut against a first or second sub-adjustment surface. Correspondingly, a second positioning hole is provided at a corresponding position on the second sub-adjustment surface, and a second positioning element is disposed within the second positioning hole, so that the first positioning element can be releasably engaged in the second positioning hole at a second position.

[0027] The protruding post protrudes outward from each arm, and correspondingly, a positioning recess is provided on each of the opposite sidewalls, so that in a first position, the protruding post can be released and engaged in the positioning recess by means of the elastic deformation of the opposite sidewalls.

[0028] In some embodiments, the seat height adjustment mechanism further includes a third adjustment surface located on the bottom side of the seat portion and having a third height relative to the seating surface. The adjustment member also has a third position, in which the adjustment member abuts against the third adjustment surface, and the adjustment member is switchable between a first position, a second position, and a third position.

[0029] In some embodiments, the third adjustment surface includes two third sub-adjustment surfaces arranged symmetrically with respect to the axis on another horizontal plane. The two third sub-adjustment surfaces are located outside the two second sub-adjustment surfaces and are at the same horizontal distance from their adjacent second sub-adjustment surfaces. The two adjustment members abut against the corresponding third sub-adjustment surfaces in the third position.

[0030] In some embodiments, each adjusting member is rectangular rod-shaped and has at least one first positioning member. The first positioning member protrudes outward from the surface of the adjusting member that abuts against the adjusting surface. Correspondingly, a first positioning hole is provided at a corresponding position on the first sub-adjusting surface, a second positioning hole is provided at a corresponding position on the second sub-adjusting surface, and a third positioning hole is provided at a corresponding position on the third sub-adjusting surface. A second positioning member is provided in the first positioning hole, the second positioning hole, and the third positioning hole, so that the first positioning member can be released and engaged in the first positioning hole in the first position, the first positioning member can be released and engaged in the second positioning hole in the second position, and the first positioning member can be released and engaged in the third positioning hole in the third position.

[0031] The present application provides a seat portion, on the bottom side of which is provided a seat height adjustment mechanism as described above.

[0032] In some embodiments, the seat portion includes:

[0033] The upper housing of the seat has a seating surface formed on its upper surface;

[0034] The lower housing of the seat is formed below the upper housing of the seat, and the seat height adjustment mechanism is disposed in a recessed portion formed on the lower surface of the lower housing of the seat.

[0035] In some embodiments, armrests are provided on both sides of the seat portion, and the armrests are C-shaped members with an opening facing forward, having:

[0036] The lower section extends backward and upward at the midpoint of each of the longitudinal sides of the seating surface to serve as a seat belt guide surface.

[0037] The vertical portion extends vertically upwards from the rear end of the lower section; and

[0038] The upper section extends forward from the top of the vertical section.

[0039] In some embodiments, the seat portion also includes a seat back, disposed at the rear edge of the seating surface.

[0040] In some embodiments, the seat portion as described above is the seat portion of a child safety seat.

[0041] This application provides a seat with a height direction, including: a seat portion; an adjustment portion movably connected to the seat portion and used to support the seat portion; and an adjustment mechanism including: a pusher rotatably disposed on the seat portion; a pusher connected to the adjustment portion; the pusher and the pusher are connected to movably connect the adjustment portion to the seat portion; and a drive assembly connected to the pusher, the drive assembly being able to drive the pusher to rotate, and when the pusher rotates, it drives the pusher to move along the height direction, so as to drive the adjustment portion to move relative to the seat portion along the height direction, so as to adjust and position the height of the seat portion.

[0042] In some embodiments, the seat portion is provided with at least two pushers, the adjustment portion is provided with at least two pushers, the at least two pushers are spaced apart, each pusher is connected to a pusher, and both pushers are driven connected to a drive assembly.

[0043] In some embodiments, the first driving member and the pushing member are gear-shaped structures, and the outer diameter of the first driving member is larger than the outer diameter of the pushing member.

[0044] In some embodiments, the driving component includes a first driving member and a second driving member, the first driving member being driven to a push member, and the second driving member being driven to the first driving member. When the second driving member is driven, the second driving member drives the first driving member to rotate so as to drive the push member to rotate.

[0045] In some embodiments, the first driving member and the pushing member are gear-shaped structures, and the outer diameter of the first driving member is larger than the outer diameter of the pushing member.

[0046] In some embodiments, the drive assembly further includes a transmission member, which is coaxially connected to the first drive member and drively connected to the second drive member. The second drive member is used to drive the transmission member to rotate, and the transmission member drives the first drive member to rotate.

[0047] In some embodiments, the drive assembly further includes a connector and a power component. One end of the connector is connected to the second drive component, and the other end of the connector is fixedly connected to the power component. The power component is used to provide driving force to drive the second drive component to rotate.

[0048] In some embodiments, the power component is a drive motor or a manual knob.

[0049] In some embodiments, the projection of the seat portion onto a projection plane perpendicular to the height direction covers the projection of the adjustment portion onto that projection plane.

[0050] In some embodiments, the seat portion has an installation space, and the pusher and drive assembly are disposed in the installation space.

[0051] In some embodiments, the seat portion includes a seat top cover and a seat bottom cover, the seat top cover and the seat bottom cover overlapping each other to define an installation space, and a pusher is disposed through the seat bottom cover to extend one end of the pusher into the installation space and connect to the pusher.

[0052] In some embodiments, a first guide portion is provided on the bottom side of the seat portion, and a second guide portion is provided on the adjustment portion corresponding to the first guide portion, and the first guide portion and / or the second guide portion extend along the height direction, and the first guide portion and the second guide portion are slidably connected.

[0053] In some embodiments, the first guide portion is a groove with an opening facing the lower side of the seat portion, and the groove extends circumferentially along the seat portion; the second guide portion is a rib protruding from the upper side of the adjustment portion, and the rib extends circumferentially along the adjustment portion; wherein, when the adjustment mechanism drives the adjustment portion to move relative to the seat portion, the rib moves along the groove.

[0054] In some embodiments, the adjusting part is provided with a fixing part, the fixing part is provided with a limiting part, the pushing member is provided with an anti-rotation part, the pushing member is connected to the fixing part, and the anti-rotation part is engaged with the limiting part to restrict the pushing member from rotating relative to the adjusting part.

[0055] In some embodiments, the seat portion is provided with at least one set of support portions, each set of support portions including at least three support portions spaced apart, and the line connecting the at least three support portions in the same set is a polygonal structure, and the pusher is rotatably disposed in the area defined by the at least three support portions in the same set; the adjustment mechanism further includes at least one positioning member, the positioning member being connected to the at least three support portions in the same set, and the pusher being connected to the positioning member to position it and abutting against the pusher to position the pusher on the seat portion.

[0056] In some embodiments, the adjustment mechanism further includes a blocking member disposed on the end of the push member away from the adjustment portion, the blocking member being used to abut against the side of the positioning member opposite to the push member.

[0057] In some embodiments, the seat is a child safety seat.

[0058] The above description is an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0059] To more clearly illustrate the technical solutions in the embodiments of this application or conventional technology, the drawings used in the description of the embodiments or conventional technology will be briefly introduced below. Obviously, the drawings described below are embodiments of this application. For those skilled in the art, other drawings can be obtained based on the disclosed drawings without creative effort. In the drawings:

[0060] Figure 1 is a perspective view of the seat portion of a child safety seat according to some embodiments of this application.

[0061] Figure 2 is a side perspective perspective view of the seat shown in Figure 1, in which the adjustment component is located in the first position.

[0062] Figure 3 is a side perspective perspective view of the seat shown in Figure 1, in which the adjustment component is located in the second position.

[0063] Figure 4 is a three-dimensional view of the seat shown in Figure 1 from below, with the adjustment component located in the first position.

[0064] Figure 5 is a bottom-view perspective view of the seat shown in Figure 1, with the adjustment component located in the second position.

[0065] Figures 6 and 7 are perspective views of the adjustment components according to some embodiments of this application, viewed from different perspectives.

[0066] Figure 8 is a longitudinal sectional view of the seat portion shown in Figure 4, taken along line AA, with the adjustment component located in the first position.

[0067] Figure 9 is a longitudinal sectional view of the seat portion shown in Figure 5, taken along line BB, with the adjustment component located in the second position.

[0068] Figure 10 is a longitudinal cross-sectional view of the seat portion shown in Figure 4, taken along its longitudinal central axis CC, wherein the adjusting member is located in the first position, and the first positioning member of the adjusting member is engaged with the first positioning hole.

[0069] Figure 11 is a side perspective view of the seat portion of a child safety seat according to some other embodiments of the present application, wherein the adjustment member is located in a first position.

[0070] Figure 12 is a side perspective view of the seat portion shown in Figure 11, with the adjustment component located in the second position.

[0071] Figure 13 is a bottom-view perspective view of the seat portion shown in Figure 11, with the adjustment component located in the first position.

[0072] Figure 14 is a bottom-view perspective view of the seat shown in Figure 11, with the adjustment component located in the second position.

[0073] Figure 15 is a three-dimensional schematic diagram of the seat shown in Figure 13 with an adjustment component removed.

[0074] Figures 16 and 17 are perspective views of the adjustment components according to other embodiments of this application, viewed from different perspectives.

[0075] Figures 18-20 are side perspective views of the seat portion of a child safety seat according to some embodiments of the present application, wherein the adjustment member is located in the first position, the second position and the third position, respectively.

[0076] Figures 21-23 are perspective views of the seat portion shown in Figures 18-20 from below, with the adjustment components located in the first, second, and third positions respectively.

[0077] Figure 24 is a bottom-view perspective view of the seat shown in Figure 18, with the adjustment components removed.

[0078] Figure 25 is a structural schematic diagram of an adjustment component according to some embodiments of this application.

[0079] Figure 26 is a three-dimensional structural schematic diagram of a seat according to some embodiments of this application.

[0080] Figure 27 is a top view of a seat according to some embodiments of this application.

[0081] Figure 28 is a perspective view of the seat adjustment section in a first position according to some embodiments of the present application.

[0082] Figure 29 is a left view of the seat adjustment section in a first position according to some embodiments of this application.

[0083] Figure 30 is a perspective view of the adjustment part of the seat in a second position according to some embodiments of the present application.

[0084] Figure 31 is a left view of the seat adjustment part in a second position according to some embodiments of this application.

[0085] Figure 32 is a partial structural schematic diagram of the adjustment part of the seat in a second position according to some embodiments of the present application.

[0086] Figure 33 is a partial structural schematic diagram of the adjustment part of the seat in a second position according to some other embodiments of the present application.

[0087] Figure 34 is a partial structural schematic diagram of the adjustment part of the seat in a second position according to some other embodiments of the present application.

[0088] Figure 35 is a partial structural schematic diagram of the adjustment part of the seat in a second position according to some other embodiments of the present application.

[0089] Figure 36 is a partial structural schematic diagram of the adjustment part of the seat in a first position according to some other embodiments of the present application.

[0090] Figure 37 is a sectional view of section AA in Figure 27.

[0091] Figure 38 is a sectional view of section BB in Figure 27, in which the adjustment part is in the first position.

[0092] Figure 39 is a schematic diagram of the internal structure of a seat according to some embodiments of this application, wherein the adjustment part is in the second position.

[0093] Figure 40 is a schematic diagram of the structure of the adjustment part according to some embodiments of this application.

[0094] Figure 41 is a structural schematic diagram of the seat portion according to some embodiments of this application.

[0095] Figure 42 is a sectional view of section CC in Figure 31.

[0096] Figure 43 is a partial structural schematic diagram of the seat adjustment part in a first position according to some other embodiments of the present application.

[0097] Figure 44 is a perspective structural diagram of a seat according to some other embodiments of this application.

[0098] Explanation of reference numerals in the attached drawings: A10, Seat seat; A100, Armrest; A200, Upper housing of seat; A210, Seat belt guide surface; A220, Seating surface; A300, Lower housing of seat; A310, First positioning hole; A320, Second positioning hole; A330, Third positioning hole; A334, Second positioning element; A335, Side wall; A340, Sliding groove; A350, First adjustment surface; A360, Second adjustment surface; A370, Third adjustment surface; A380, Connecting hole; A390, Positioning recess; A400, Adjusting element; A410, Connecting column; A420, First positioning element; A430, Protruding column; A450, Support body; A460, Support arm; A500, Mounting surface; a, First height; b, Second height; c, Third height; B100, Seat; B1, Seat section; B10, Installation space; B11, Seat cover; B111, Seating surface; B12, Seat cover; B121, Mounting groove; B122, Support section; B123, Connecting ring; B124, Connecting post; B13, First guide section; B2, Adjustment section; B21, Second guide section; B22, Fixing section; B221, Limiting section; B222, Connecting hole; B3, Adjustment mechanism; B31, Pushing element; B311, External gear; B3 2. Pushing component; B321. Anti-rotation part; B322. Insertion hole; B33. Drive assembly; B331. First drive component; B3311. Limiting groove; B332. Second drive component; B333. Transmission component; B3331. Limiting protrusion; B334. Connecting component; B335. Power component; B336. Bracket; B34. Positioning component; B35. Blocking component; B36. Gasket; B371. First button; B372. Second button; B4. Handrail; B5. Fastener. Detailed Implementation

[0099] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0100] In the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used for the convenience of describing this application 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 application.

[0101] Furthermore, in the description of this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc. The terms "installed," "connected," "attached," "fixed," etc., should be interpreted broadly. For example, an element referred to as "fixed to" or "set on" another element may be directly on another element or may be located in an intermediate element. It can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements or an interaction between two elements, unless otherwise expressly defined. However, specifying a direct connection indicates that the two connected entities do not establish a connection relationship through a transitional structure, but are connected only through a connecting structure to form a whole. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0102] Figures 1-25 schematically illustrate several embodiments and variations of this application, but are used to illustrate the technical concept of this application and are not intended to limit the scope of protection of this application.

[0103] Referring to Figures 1-5, 8-15 and 18-20, the seat portion A10 of a child safety seat may include an armrest A100, an upper seat housing A200 and a lower seat housing A300.

[0104] The upper seat housing A200 is located above the lower seat housing A300. The upper seat housing A200 can be integrally formed with the lower seat housing A300, or it can be connected and fastened by fasteners, etc., which is not limited to this application. The upper surface of the upper seat housing A200 can be formed with a seating surface A220. The seating surface A220 can be a horizontal plane at the rear of the seat housing A10, and a convex arc surface at the front of the seat housing A10 (as shown in Figures 8-10). In other words, the seating surface A220 forms a concave seating space, which can increase the safety of infants and young children. Seat cloths, cushions, etc. (not shown) can be provided on the seating surface A220 to provide infants and young children with a more comfortable seating experience.

[0105] Armrests A100 are disposed on two longitudinal sides of the upper seat housing A200 and near the rear of the upper seat housing A200. Armrests A100 may be integrally formed with the upper seat housing A200 or may be fastened by fasteners, etc., and this application is not limited thereto. In one embodiment, armrest A100 may be a C-shaped member with an opening facing forward. The lower section of armrest A100 extends obliquely upward and backward at the midpoint of each longitudinal side of the seating surface A220 to serve as a seat belt guide surface A210. Armrest A100 may also have a vertical section extending vertically upward from the rear end of the lower section. Armrest A100 may also have an upper section extending forward from the top of the vertical section for infants and young children to hold or lean against. That is, a seat belt guide surface A210 is formed between the armrest A100 and the seat upper housing A200 in the vertical direction (i.e., the up-down or height direction of the seat A10). The seat belt can pass through the seat belt guide surface A210 along the lateral direction of the seat A10 (i.e., the left-right direction of the seat A10) to securely fasten the seat A10 to the car seat. In some embodiments, the seat belt guide surface A210 can be formed above the longitudinal sides of the rear portion of the seat upper housing A200 and is vertically higher than the seating surface A220 portion between the two seat belt guide surfaces A210 (as shown in Figures 2-3, 8-12, and 18-20) to more advantageously guide the seat belt through the seat A10. The seat belt guide surface A210 can be formed as a slope or an arc surface with a gradually decreasing height from the rear to the front of the seat portion A10, or it can be formed as other shapes, which are not limited to this application.

[0106] In some embodiments, the seat belt guide surface A210 may be formed as part of the seat upper housing A200, and may be integrally formed with the seat upper housing A200, or connected and fastened to the seat upper housing A200 by fasteners or the like. In some embodiments, the armrest A100 may be omitted.

[0107] The height of the seat A10 can be adjusted by a seat height adjustment mechanism. The height of the seat A10 can be represented by the height between the apex of the seating surface A220 of the seat A10 and the mounting surface A500 formed when the bottom surface of the seat A10 is placed on a horizontal plane (see Figures 2-3, 8-12, and 18-20). For example, the height of the seat A10 is a in Figure 2, b in Figure 3, and c in Figure 20.

[0108] The seat height adjustment mechanism can be located on the lower surface of the seat lower housing A300. For example, the adjustment surface of the seat height adjustment mechanism can be located in a recessed portion formed on the lower surface of the seat lower housing A300.

[0109] The seat height adjustment mechanism may include an adjustment surface and an adjustment member A400, which can adjust the height of the seat portion A10 through the interaction of the adjustment surface and the adjustment member A400. The adjustment member A400 is movably disposed on the seat portion A10, which includes at least two adjustment surfaces. When the adjustment member A400 is in different positions, it abuts against different adjustment surfaces, resulting in different seat heights. For example, the adjustment surface of the seat height adjustment mechanism may be disposed in a recessed portion formed on the lower surface of the seat lower housing A300. In some embodiments, the seat height of the child safety seat is different when the adjustment member is disposed on different adjustment surfaces.

[0110] In some embodiments, the seat height adjustment mechanism may include a first adjustment surface A350, a second adjustment surface A360, and at least one adjustment element A400.

[0111] In some embodiments, the first adjustment surface A350 and the second adjustment surface A360 are located on the bottom side of the seat portion A10 and have different heights from the bottom surface of the seat portion A10.

[0112] As shown in Figures 4 and 5, the first adjustment surface A350 is closer to the center of the bottom side of the seat portion A10 in the horizontal direction than the second adjustment surface A360. That is, the second adjustment surface A360 is closer to the side of the seat portion A10 that is parallel to the adjustment surface than the first adjustment surface A350.

[0113] The first adjustment surface A350 and the second adjustment surface A360 can be formed as rectangular planes extending in the lateral direction along the seat portion A10.

[0114] The seat height adjustment mechanism may include two adjustment elements A400. A first adjustment surface A350 may include two first sub-adjustment surfaces located on the same horizontal plane. A second adjustment surface A360 may include two second sub-adjustment surfaces located on the same horizontal plane. As previously described, the first adjustment surface A350 and the second adjustment surface A360 are located on different horizontal planes.

[0115] The two first sub-adjustment surfaces can be symmetrically arranged with respect to the transverse central axis of the bottom surface of the seat A10, and the two second sub-adjustment surfaces can be symmetrically arranged with respect to the transverse central axis.

[0116] The first adjustment surface A350 and the second adjustment surface A360 can be set at intervals, that is, the two second sub-adjustment surfaces are located on the longitudinal outer side of the two first sub-adjustment surfaces in the horizontal direction, and are respectively at the same horizontal distance from their adjacent first sub-adjustment surfaces.

[0117] In some embodiments, the seat height adjustment mechanism may further include a sliding groove A340, which is inclined relative to each adjustment surface.

[0118] The bottom surface of the seat portion A10 has a pair of opposing sidewalls A335 extending longitudinally, and a pair of sliding grooves A340 are respectively provided on each of the pair of sidewalls A335. The pair of sliding grooves A340 are inclined relative to the first adjustment surface A350 and the second adjustment surface A360, and are symmetrically positioned relative to the transverse central axis.

[0119] Referring to Figures 6 and 7, the adjusting member A400 is generally U-shaped. The adjusting member A400 may have a supporting body A450, a support arm A460, a connecting post A410, and a first positioning member A420. The supporting body A450 may extend along the longitudinal direction of the adjusting member A400. The supporting body A450 may abut against a first adjusting surface A350 (as shown in Figure 4), and the supporting body A450 may also abut against a second adjusting surface A360 (as shown in Figure 5). The support arm A460 extends substantially perpendicularly from both ends of the supporting body A450. The surface of the adjusting member A400 that abuts against the adjusting surface has a matching shape with the corresponding adjusting surface; for example, the abutting surfaces of the supporting body A450 and the support arm A460 match either the first adjusting surface A350 or the second adjusting surface A360. The connecting post A410 may be located at both ends of the supporting body A450; for example, the connecting post A410 may be located at the free end of the support arm A460. Adjustment component A400 can be mounted to sliding groove A340 on sidewall A335 via connecting post A410. Connecting post A410 may have a shape that matches the inner contour of sliding groove A340 and may slide along the inner contour of sliding groove A340 (described in detail below).

[0120] A first positioning element A420 is provided on the support body A450, and a second positioning element A334 is correspondingly provided on the adjustment surface. The first positioning element A420 can be releasably engaged with the corresponding second positioning element A334 on the adjustment surface (described in detail below). The first positioning element A420 can be formed at the longitudinal midpoint of the support body A450.

[0121] In some embodiments, the first positioning member A420 protrudes from the surface of the support body A450 that abuts against the adjustment surface, and when the adjustment member A400 engages with the adjustment surface, the first positioning member A420 can be received in a corresponding positioning hole on the adjustment surface.

[0122] A first positioning hole A310 is provided on each of the two first sub-adjustment surfaces, and a second positioning hole A320 is provided on each of the two second sub-adjustment surfaces. The first positioning hole A310 and the second positioning hole A320 can be located on the longitudinal central axis and are symmetrically distributed with respect to the transverse central axis.

[0123] Referring again to Figures 4 and 5, the adjusting member A400 can be disposed on the bottom side of the seat portion A10. As shown in Figure 4, the two adjusting members A400 can respectively engage with the two first sub-adjusting surfaces of the first adjusting surface A350, at which time the adjusting member A400 is in the first position. As shown in Figure 5, the two adjusting members A400 can respectively engage with the two second sub-adjusting surfaces of the second adjusting surface A360, at which time the adjusting member A400 is in the second position.

[0124] In some embodiments, when the adjusting member A400 is in the first position, the vertex of the seating surface A220 of the seat portion A10 has a first height a relative to the mounting surface A500 (see FIG. 2); when the adjusting member A400 is in the second position, the vertex of the seating surface A220 of the seat portion A10 has a second height b relative to the mounting surface A500 (see FIG. 3), wherein the second height b is greater than the first height a.

[0125] When the adjusting member A400 is in the first position, in embodiments where the adjusting member A400 can be completely housed within the lower housing A300 of the seat portion A10, the bottom side of the lower housing A300 of the seat portion A10 is formed as a mounting surface A500. In some embodiments, the two second sub-adjusting surfaces may be configured to be flush with the bottom side of the lower housing A300 of the seat portion A10 to provide stable support for the seat portion A10.

[0126] When the adjusting member A400 is in the first position, in embodiments where the adjusting member A400 extends downward beyond the bottom side of the lower housing A300 of the seat portion A10, the bottom side of the adjusting member A400 forms a mounting surface A500. In some embodiments, the support body A450 of each of the two adjusting members A400 in the first position abuts against the two first sub-adjustment surfaces, and the opposite side forms the mounting surface A500. In some embodiments, the sum of the widths of the two adjusting members A400 in the longitudinal direction of the seat portion A10 may be greater than one-third of the longitudinal length of the seat portion A10, in order to provide a stable support force for the seat portion A10.

[0127] When the adjusting member A400 is in the second position, the adjusting member A400 extends downward beyond the bottom side of the lower housing A300 of the seat portion A10. At this time, the bottom side of the adjusting member A400 forms a mounting surface A500. The vertex of the seating surface A220 of the seat portion A10 has a second height b relative to the mounting surface A500 (see Figure 3), wherein the second height b is greater than the first height a.

[0128] In some embodiments, the support body A450 of each of the two adjustment members A400 in the second position shown in FIG3 abuts against the two second sub-adjustment surfaces on one side, and the opposite side forms a mounting surface A500. The two adjustment members A400 may be close to the longitudinal edge of the lower housing A300 of the seat. In some embodiments, the sum of the widths of the two adjustment members A400 in the longitudinal direction of the seat A10 may be greater than one-third of the longitudinal length of the seat A10, so as to provide a stable support force for the seat A10.

[0129] When the adjusting member A400 is in the first position and the second position, it abuts against the first adjusting surface and the second adjusting surface with the same side.

[0130] The connecting post A410 of the adjusting member A400 can slide within the sliding groove A340, and the adjusting member A400 can move between a first position and a second position by sliding the connecting post A410 within the sliding groove A340.

[0131] Figures 8 and 9 illustrate the engagement relationship between the adjusting member A400 and the sliding groove A340 when A400 is in the first and second positions, respectively. In some embodiments, as shown in Figure 8, the connecting post A410 of the adjusting member A400 is located at the upper end of the sliding groove A340. In this case, the adjusting member A400 is in the first position, and it abuts against the first adjusting surface A350, thereby making the height of the seat portion A10 a first height a. As shown in Figure 9, the connecting post A410 of the adjusting member A400 is located at the lower end of the sliding groove A340. In this case, the adjusting member A400 is in the second position, and it abuts against the second adjusting surface A360, thereby making the height of the seat portion A10 a second height b, which is greater than the first height a.

[0132] Figure 10 is a cross-sectional view of the engagement portion of the adjusting member A400 and the adjusting surface. The first positioning member A420 of the adjusting member A400 can protrude outward from the surface of the supporting body A450. The adjusting member A400 shown in Figure 10 is in a first position, in which the adjusting member A400 abuts and engages with the first adjusting surface A350. In some embodiments, the supporting bodies A450 of the two adjusting members A400 can respectively abut against the two first adjusting surfaces A350, and the first positioning members A420 of the two adjusting members A400 can respectively engage with the two first positioning holes A310. For example, the first positioning hole A310 has a second positioning member A334 formed on its sidewall for engaging with the first positioning member A420 of the adjusting member A400. The first positioning member A420 of the adjusting member A400 can enter the first positioning hole A310 and engage with the second positioning member A334. When it is necessary to move the adjusting member A400, pull down the adjusting member A400 forcefully. The adjusting member A400 can rotate within the sliding groove A340 via the connecting column A410, causing the first positioning member A420 to disengage from the second positioning member A334 of the first positioning hole A310, and then disengage from the first positioning hole A310. Continue to pull the adjusting member A400, and the position of the adjusting member A400 can be adjusted by sliding the connecting column A410 within the sliding groove A340.

[0133] When the adjusting member A400 is in the second position, the adjusting member A400 can abut and engage with the second adjusting surface A360 in a manner similar to that of the first adjusting surface A350. That is, the second positioning hole A320 on the second adjusting surface A360 has a second positioning member A334 formed on its side wall, which is used to engage with the first positioning member A420 of the adjusting member A400. This will not be described in detail here.

[0134] In some embodiments, the seat height adjustment mechanism may include a first adjustment surface A350, a second adjustment surface A360, a connecting hole A380, a positioning recess A390, and two adjustment members A400. The differences or necessary aspects of this seat height adjustment mechanism compared to the seat height adjustment mechanism in the above embodiments will be described in detail below; other similar or identical aspects will not be repeated.

[0135] Referring to Figures 13-15, the first adjustment surface A350 can be formed as a single plane. The first adjustment surface A350 can be located at the center of the bottom surface of the seat portion A10 and has a central axis coinciding with the bottom surface of the seat portion A10. The first adjustment surface A350 and the second adjustment surface A360 can be spaced apart, that is, the two second sub-adjustment surfaces are located horizontally on the two longitudinal outer sides of the first adjustment surface A350, and are respectively at the same horizontal distance from the first adjustment surface A350. No positioning holes are required on the first adjustment surface A350. The bottom surface of the seat portion A10 has sidewalls around its perimeter. On each of a pair of longitudinally extending opposing sidewalls A335, a pair of connecting holes A380 and a pair of positioning recesses A390 are respectively provided. The pair of connecting holes A380 are symmetrically positioned relative to the transverse central axis, and the pair of positioning recesses A390 are also symmetrically positioned relative to the transverse central axis, so that the distance between the corresponding connecting holes A380 and positioning recesses A390 is the same.

[0136] Referring to Figures 16 and 17, the adjusting component A400 can be roughly formed into a U-shape. In addition to the supporting body A450, the support arm A460, the connecting post A410, and the first positioning component A420, the adjusting component A400 may also have a protruding post A430. The supporting body A450 can abut against the first adjusting surface A350 (as shown in Figure 13), and the supporting body A450 can also abut against the second adjusting surface A360 (as shown in Figure 14). In some embodiments, the protruding post A430 may be disposed at one longitudinal end of the support body A450 and protrude outward from the support arm A460, that is, each adjusting member A400 may have one protruding post A430. For example, the protruding post A430 may be configured to be on the same side of the adjusting member A400 as the connecting post A410, and the distance between the protruding post A430 and the connecting post A410 on the same side matches the distance between the connecting hole A380 and the positioning recess A390 on the front or rear part of the same sidewall A335. In some embodiments, the protruding post A430 may be disposed at both longitudinal ends of the support body A450, that is, each adjusting member A400 may have two protruding posts A430. The adjusting member A400 can be mounted to the connecting hole A380 on the sidewall A335 through the connecting post A410, and the connecting post A410 can rotate within the connecting hole A380.

[0137] Referring again to Figures 13-15, the adjusting member A400 can be disposed on the bottom side of the seat portion A10. As shown in Figure 13, the two adjusting members A400 can respectively engage with the first adjusting surface A350, at which time the adjusting member A400 is in the first position. As shown in Figure 14, the two adjusting members A400 can respectively engage with the two second sub-adjusting surfaces of the second adjusting surface A360, at which time the adjusting member A400 is in the second position. When the adjusting member A400 is in the first position, the adjusting member A400 can be completely housed within the housing of the seat portion A10, at which time the seating surface A220 of the seat portion A10 has a first height a relative to the mounting surface A500 (see Figure 11). When the adjusting member A400 is in the second position, the adjusting member A400 extends downward beyond the bottom side of the seat portion A10, and the seating surface A220 of the seat portion A10 has a second height b relative to the mounting surface A500 (see Figure 12), wherein the second height b is greater than the first height a. The two adjusting members A400 can be switched between a first position and a second position by rotating the connecting post A410 in the connecting hole A380. In the first position, the protruding post A430 can be released and engaged in the positioning recess A390 on the side wall A335 by means of the elastic deformation of the side wall A335, thereby holding the adjusting member A400 in the first position.

[0138] When the adjusting member A400 is in the first position, its first surface abuts against the first adjusting surface A350; when the adjusting member A400 is in the second position, its second surface abuts against the second adjusting surface A360.

[0139] In some embodiments, the seat height adjustment mechanism may include a first adjustment surface A350, a second adjustment surface A360, a third adjustment surface A370, and two adjustment members A400. The differences or necessary aspects of this seat height adjustment mechanism compared to the seat height adjustment mechanism in the above embodiments will be described in detail below; other similar or identical aspects will not be repeated.

[0140] Referring to Figures 21-24, the third adjustment surface A370, the first adjustment surface A350, and the second adjustment surface A360 are all located on the bottom side of the seat portion A10 and have different heights from the bottom surface of the seat portion A10. The second adjustment surface A360 is closer to the center of the bottom side of the seat portion A10 in the horizontal direction than the third adjustment surface A370; that is, the third adjustment surface A370 is closer to the side of the seat portion A10 parallel to the adjustment surface than the second adjustment surface A360. The third adjustment surface A370, the first adjustment surface A350, and the second adjustment surface A360 can be formed as rectangular planes extending along the lateral direction of the seat portion A10. In some embodiments, the first adjustment surface A350 may include two first sub-adjustment surfaces, which are symmetrically arranged with respect to the lateral central axis of the bottom surface of the seat portion A10 and located on the same horizontal plane. In some embodiments, the first adjustment surface A350 can be formed as a single plane. The first adjustment surface A350 can be located at the center of the bottom surface of the seat portion A10 and has a central axis coinciding with the bottom surface of the seat portion A10. The third adjustment surface A370 can include two third sub-adjustment surfaces, which are symmetrically arranged with respect to the transverse central axis and located on the same horizontal plane. As mentioned above, the third adjustment surface A370, the first adjustment surface A350, and the second adjustment surface A360 are located on different horizontal planes. The third adjustment surface A370 and the second adjustment surface A360 can be spaced apart, that is, the two third sub-adjustment surfaces are respectively located on the longitudinal outer side of the two second sub-adjustment surfaces in the horizontal direction, and are respectively at the same horizontal distance from their adjacent second sub-adjustment surfaces. A third positioning hole A330 is provided on each of the two third sub-adjustment surfaces. The third positioning hole A330, the first positioning hole A310, and the second positioning hole A320 can be located on the longitudinal central axis and are symmetrically distributed with respect to the transverse central axis.

[0141] Referring to Figure 25, the adjusting member A400 is generally rectangular in shape and has at least one first positioning member A420. The adjusting member A400 can abut against a first adjusting surface A350 (as shown in Figure 21), a second adjusting surface A360 (as shown in Figure 22), and a third adjusting surface A370 (as shown in Figure 23). The surfaces of the adjusting member A400 that abut against the adjusting surfaces have matching shapes. The first positioning member A420 can be formed at the longitudinal midpoint of the adjusting member A400 and protrude from the surface of the adjusting member A400. The first positioning member A420 can releasably engage with a corresponding positioning hole.

[0142] Referring again to Figures 21-24, adjusting member A400 can be disposed on the bottom side of seat portion A10. As shown in Figure 21, the two adjusting members A400 can respectively engage with the first adjusting surface A350, at which time adjusting member A400 is in the first position. As shown in Figure 22, the two adjusting members A400 can respectively engage with the two second sub-adjusting surfaces of the second adjusting surface A360, at which time adjusting member A400 is in the second position. As shown in Figure 23, the two adjusting members A400 can respectively engage with the two third sub-adjusting surfaces of the third adjusting surface A370, at which time adjusting member A400 is in the third position. When the adjusting member A400 is in the first position, it can be completely retracted into the housing of the seat portion A10. At this time, the seating surface A220 of the seat portion A10 has a first height a relative to the mounting surface A500 (see Figure 18). When the adjusting member A400 is in the second position, it extends downwards from the bottom side of the seat portion A10. At this time, the bottom surface of the adjusting member A400 forms the mounting surface A500, and the seating surface A220 of the seat portion A10... The apex of the seat A10 has a second height b relative to the mounting surface A500 (see Figure 19). When the adjustment member A400 is in the third position, the adjustment member A400 extends further below the bottom side of the seat A10, and the bottom surface of the adjustment member A400 forms the mounting surface A500. The apex of the seating surface A220 of the seat A10 has a third height c relative to the mounting surface A500 (see Figure 20), where the third height c is greater than the second height b and greater than the first height a. In some embodiments, the two adjustment members A400 shown in Figures 19 and 20, in the second or third position, abut one side against the two second sub-adjustment surfaces, and the other side opposite to them forms the mounting surface A500. The two adjustment members A400 can be located near the longitudinal edge of the lower housing A300 of the seat, and the sum of the widths of the two adjustment members A400 in the longitudinal direction of the seat A10 can be greater than one-quarter of the longitudinal length of the seat A10, so as to provide a stable support force for the seat A10. Among them, the two adjustment members A400 in the third position are closer to the longitudinal edge of the lower housing A300 of the seat than the two adjustment members A400 in the second position. Therefore, even if the third height c of the seat A10 in the third position is greater than the second height b of the seat A10 in the second position, the adjustment members A400 still have a good support effect on the seat A10 in the third position.

[0143] In some embodiments, the first adjustment surface A350, the second adjustment surface A360, and the third adjustment surface A370 can be formed as planes extending along the longitudinal direction of the seat portion A10. The arrangement and positional relationship of the first positioning hole A310, the second positioning hole A320, the third positioning hole A330, the side wall A335, the sliding groove A340, the connecting hole A380, the positioning recess A390, and the adjusting member A400 corresponding to the first adjustment surface A350, the second adjustment surface A360, and the third adjustment surface A370 can also be adjusted accordingly. The resulting seat height adjustment mechanism can also achieve the inventive effect of adjusting seat height described in this application, and will not be repeated here.

[0144] When in use, the seat portion A10 of the child safety seat may also have other components and accessories such as seat cloth, seat cushion, seat back, seat support legs, and ISOFIX interface, or may be used in conjunction with other components or accessories; this application does not limit this.

[0145] Furthermore, the seat portion A10 of this application can also be applied to other scenarios, such as safety baskets, and this application does not limit it.

[0146] Referring to Figures 26 to 37, Figure 26 shows a perspective view of the seat in some embodiments of this application; Figure 27 shows a top view of the seat in some embodiments of this application; Figure 28 shows a perspective view of the seat adjustment part in a first position in some embodiments of this application; Figure 29 shows a left view of the seat adjustment part in a first position in some embodiments of this application; Figure 30 shows a perspective view of the seat adjustment part in a second position in some embodiments of this application; Figure 31 shows a left view of the seat adjustment part in a second position in some embodiments of this application; Figure 32 shows a partial structural diagram of the seat adjustment part in a second position in some embodiments of this application; Figure 33 shows a partial structural diagram of the seat adjustment part in a second position in some other embodiments of this application; Figure 34 shows a partial structural diagram of the seat adjustment part in a second position in yet another embodiment of this application; Figure 35 shows a partial structural diagram of the seat adjustment part in a second position in yet another embodiment of this application; Figure 36 shows a partial structural diagram of the seat adjustment part in a first position in yet another embodiment of this application; and Figure 37 shows a cross-sectional view of section AA in Figure 27.

[0147] According to some embodiments of this application, a seat B100 is provided. The seat B100 includes a seat portion B1, the top of the seat portion B1 is provided with a seating surface B111 for a passenger to sit on, and the bottom opposite the seating surface B111 is used to support the seat portion B1 to stably place the seat portion B1.

[0148] As shown in Figures 26, 28, and 30, seat B100 has a length direction X, a width direction Y, and a height direction Z. The length direction X of seat B100 represents the direction the occupant faces and faces away from when seated, with the facing direction being positive and the facing direction negative. The width direction Y of seat B100 is perpendicular to the length direction X and the height direction Z, with the left-hand direction being positive and the right-hand direction negative. The height direction Z of seat B100 has an upward direction positive and a downward direction negative.

[0149] This application does not limit the shape of the seat portion B1 and the seating surface B111. For example, the seat portion B1 can be plate-shaped, boss-shaped, recessed, etc., and the seating surface B111 can be flat, inclined, or curved, etc., as long as it can be used by a passenger. In some embodiments, the seat B100 may also include armrests B4, which are connected to the top of the seat portion B1. For example, two armrests B4 may be arranged on opposite sides of the seat portion B1 along the width direction Y of the seat B100. In some embodiments, the seat portion B1 and the armrests B4 are integral. In some embodiments not shown, the seat B100 may also include a backrest connected to the seat portion B1. In some embodiments, the backrest is pivotally connected to the rear side of the seat portion B1 to achieve an adjustable backrest angle; or, the backrest may be detachably connected to the seat portion B1 by pivoting or inserting.

[0150] Referring to Figures 28 to 31, the seat B100 also includes an adjustment section B2, which is movably connected to the seat section B1 and supports the seat section B1. The adjustment section B2 is connected to the bottom of the seat section B1. When in use, the seat B100 can be supported on the ground or a vehicle seat by the adjustment section B2. The height of the seat B100 is the distance between the bottom surface of the adjustment section B2 and the seating surface B111 of the seat section B1. In some embodiments, the adjustment section B2 and the seat section B1 can move relative to each other along the height direction Z of the seat B100. For example, the adjustment section B2 can be slidably and telescopically connected to the bottom of the seat section B1, and the adjustment section B2 has a first position and a second position. As shown in Figures 28 and 29, the adjustment section B2 can move along the height direction Z to the first position, at which point most of the adjustment section B2 extends beyond the bottom of the seat section B1, the distance between the bottom surface of the adjustment section B2 and the seating surface B111 of the seat section B1 is at its maximum, and the height of the seat B100 is at its highest. As shown in Figures 30 and 31, the adjustment part B2 can move along the height direction Z to the second position. At this position, the adjustment part B2 is mostly retracted into the seat part B1, the distance between the bottom surface of the adjustment part B2 and the seating surface B111 of the seat part B1 is minimized, and the height of the seat B100 is at its lowest. In some embodiments, the adjustment part B2 can also be connected to the side of the seat part B1. For example, the adjustment part B2 can be connected to the left, right, or rear side of the seat part B1, as long as its bottom can be used to support the seat part B1. The specific location where it is connected to the seat part B1 is not limited.

[0151] In some embodiments, the adjustment part B2 also has other positions besides the first position and the second position to accommodate the needs of different passengers. This application uses the first position and the second position as two relatively different height references, and is not limited to the first position and the second position being the highest position and the lowest position, respectively.

[0152] Referring to Figures 30 to 32, the seat B100 also includes an adjustment mechanism B3. The adjustment mechanism B3 is connected to the seat portion B1 and the adjustment portion B2, and is used to adjust and position the relative position of the seat portion B1 and the adjustment portion B2 along the height direction Z, thereby adjusting the height of the seat B100. For example, the adjustment mechanism B3 can be disposed between the seat portion B1 and the adjustment portion B2. The adjustment mechanism B3 drives the adjustment portion B2 to move relative to the seat portion B1 along the height direction Z, thereby adjusting and positioning the relative position between the seat portion B1 and the adjustment portion B2 along the height direction Z.

[0153] As shown in Figures 32 to 37, the adjustment mechanism B3 includes at least one pusher B31, at least one pusher B32, and a drive assembly B33. The pusher B31 is rotatably mounted on the seat portion B1. The pusher B32 is connected to the adjustment portion B2, and the pusher B31 is connected to the pusher B32 to movably connect the adjustment portion B2 to the seat portion B1. The drive assembly B33 is connected to the pusher B31 and can drive the pusher B31 to rotate. When the pusher B31 rotates, it drives the pusher B32 to move along the height direction Z, thereby causing the adjustment portion B2 to move relative to the seat portion B1 along the height direction Z, so as to adjust and position the height of the seat portion B1. In some embodiments, the pusher B32 is fixedly connected to the adjustment portion B2, or detachably connected to the adjustment portion B2 through some connecting parts, as long as the adjustment portion B2 can be driven to move when the pusher B32 moves.

[0154] This application does not limit the specific structure of the pusher B31 and the pusher B32, as long as the pusher B31 can drive the pusher B32 to move along the height direction Z of the seat B100 when it rotates, and the pusher B31 can lock the position of the pusher B32 in the height direction Z of the seat B100 when it stops rotating. For example, the pusher B32 can be a screw, which is fixedly connected to the adjusting part B2 and extends along the height direction Z. The pusher B31 is a nut component threadedly connected to the screw. When the nut component rotates, it drives the screw to move along the height direction Z. Alternatively, the pusher B32 can be a rack, which is fixedly connected to the adjusting part B2 and extends along the height direction Z. The pusher B31 is a gear meshing with the rack. When the gear rotates, it drives the rack to move along the height direction Z. Alternatively, the pusher B32 can be a worm, which is fixedly connected to the adjusting part B2 and extends along the height direction Z. The pusher B31 is a worm wheel, which drives the worm to move along the height direction Z when it rotates.

[0155] This application does not limit the number of pusher B31 and pusher B32. For example, as shown in Figure 32, there may be one pusher B31 and one pusher B32. As shown in Figure 33, there may be two pushers B31 and two pushers B32. As shown in Figure 34, there may be three pushers B31 and three pushers B32. As shown in Figures 35 and 36, there may be four pushers B31 and four pushers B32.

[0156] This application does not limit the structure of the drive assembly B33. For example, the drive assembly B33 may include a worm gear that drives the pusher B31 to rotate; or, the drive assembly B33 may also include a gear that drives the pusher B31 to rotate.

[0157] When the height of seat B100 is adjusted, drive assembly B33 drives pusher B31 to rotate. As pusher B31 rotates, it causes pusher B32 to move along the height direction Z of seat B100. Pusher B32 then causes adjustment part B2 to move relative to seat part B1 along the height direction Z, thereby adjusting the relative position between seat part B1 and adjustment part B2, and thus adjusting the height of seat B100. When seat B100 is adjusted to the desired height, drive assembly B33 stops driving. At this time, drive assembly B33 locks the rotation of pusher B31. Because pusher B31 and pusher B32 are meshed together, pusher B31, pusher B32, and drive assembly B33 can self-lock, thereby locking the relative position between seat part B1 and adjustment part B2, and thus locking the height of seat B100.

[0158] In some embodiments, when one pusher B31 and one pusher B32 are each provided, the pusher B31 and the pusher B32 can be positioned at the center of the seat portion B1. This provides more balanced support for the seat portion B1 with the pusher B32, allowing it to stably support and move the seat portion B1 up and down. The seat portion B1 is less prone to collapse under stress, and adjusting the height of the seat B100 is easier, which helps extend the service life of the pusher B32.

[0159] The seat B100 of this embodiment, by setting an adjustment part B2 movably connected to the seat part B1 and setting an adjustment mechanism B3 to adjust and position the relative position between the seat part B1 and the adjustment part B2 along the height direction Z, can adjust the height of the seat B100 to meet the usage needs of passengers of different heights or the needs of different passengers for different sitting postures, thus making it more versatile. By setting a drive component B33 to drive the pusher B31 to rotate, and the pusher B31 to drive the pusher B32 to move along the height direction Z when it rotates, the structure for adjusting the height of the seat B100 is simple and compact, saving space, and is easy and convenient to operate, thus improving the user experience.

[0160] In some embodiments, seat B100 may be a child safety seat, which provides a comfortable and safe sitting or reclining space for children when traveling in a vehicle.

[0161] In some embodiments, the projection of the seat portion B1 onto a projection plane perpendicular to the height direction Z covers the projection of the adjustment portion B2 onto that projection plane. That is, the entire projection of the adjustment portion B2 onto that projection plane lies within the range of the projection of the seat portion B1 onto that projection plane. This allows the seat portion B1 to have a larger seating surface B111, facilitating passenger comfort and improving seating comfort. Furthermore, it allows the adjustment portion B2 to easily retract into the seat portion B1, resulting in a more compact structure, reducing the space occupied by the seat B100, and facilitating storage and transportation.

[0162] Referring to Figures 32 to 37, in some embodiments, the drive assembly B33 includes a first drive member B331 and a second drive member B332. The first drive member B331 is driven to the push member B31, and the second drive member B332 is driven to the first drive member B331. When the second drive member B332 is driven, the second drive member B332 drives the first drive member B331 to rotate, thereby driving the push member B31 to rotate.

[0163] The first driving member B331 is used to drive the pusher B31 to rotate. In some embodiments, the first driving member B331 is rotatably disposed on the seat portion B1. This application does not limit the structure of the first driving member B331. For example, the first driving member B331 may be a gear or a worm gear, etc., and the first driving member B331 is meshed with the pusher B31.

[0164] The second driving member B332 is used to drive the first driving member B331 to rotate. This application does not limit the structure of the second driving member B332. For example, the second driving member B332 can also be a gear or a worm gear, etc., and when the second driving member B332 rotates, it drives the first driving member B331 to rotate.

[0165] The rotation axis of the second driving member B332 can be the same as or different from that of the first driving member B331, depending on actual needs. Correspondingly, the position of the second driving member B332 can also be arranged according to actual needs. For example, the rotation axis of the second driving member B332 can be set perpendicular to the rotation axis of the first driving member B331, and the second driving member B332 can be arranged above the first driving member B331. In this way, the structure of the driving assembly B33 is more compact and saves space.

[0166] By setting the first driving component B331 and the second driving component B332, the first driving component B331 and the second driving component B332 can be arranged according to actual needs, making the layout of the driving component B33 more flexible, and achieving a more compact structure while driving the rotation of the driving component B31, thus saving space.

[0167] Referring again to Figures 32 to 37, in some embodiments, the first driving member B331 and the pushing member B31 are gear-shaped structures. For example, an external gear B311 may be fixedly provided on the outer periphery of the pushing member B31. In some embodiments, the external gear B311 and the pushing member B31 are integral structures. For example, the first driving member B331 may be a gear, and the first driving member B331 meshes with the external gear B311 of the pushing member B31, thereby driving the first driving member B331 to the pushing member B31. When the height of the seat B100 is adjusted, the second driving member B332 drives the first driving member B331 to rotate. When the first driving member B331 rotates, it drives the pushing member B31 to rotate through the meshing external gear B311. When the pushing member B31 rotates, it drives the pushing member B32 to move along the height direction Z of the seat B100. The pushing member B32 drives the adjusting part B2 to move relative to the seat part B1 along the height direction Z. When seat B100 is adjusted to the desired height, the first drive component B331 stops rotating. At this point, due to the meshing engagement between the first drive component B331 and the push component B31, a self-locking mechanism is achieved, thus locking the height of seat B100. By designing the first drive component B331 and the push component B31 as a gear-like structure, self-locking is achieved between them, making operation simple and convenient, eliminating the need for an additional locking structure, further simplifying the structure of the adjustment mechanism B3, and saving costs.

[0168] Referring again to Figures 32 to 37, in some embodiments, the outer diameter of the first driving member B331 is larger than the outer diameter of the pushing member B31. Thus, when the first driving member B331 rotates, it requires less effort to drive the pushing member B31 to rotate, and the rotation is more stable, which helps improve the stability when adjusting the height of the seat B100.

[0169] Referring again to Figures 32 to 37, in some embodiments, the drive assembly B33 further includes a transmission member B333. The transmission member B333 is coaxially connected to the first drive member B331 and is drively connected to the second drive member B332. The second drive member B332 is used to drive the transmission member B333 to rotate, and the transmission member B333 drives the first drive member B331 to rotate.

[0170] In this embodiment, the second driving member B332 is connected to the first driving member B331 via a transmission member B333. Of course, in other embodiments, the second driving member B332 and the first driving member B331 can also be directly connected; for example, the second driving member B332 can be a worm gear, and the first driving member B331 can be a gear, with the worm gear meshing with the gear.

[0171] This application does not limit the structure of the transmission member B333. For example, the transmission member B333 can be a bevel gear, a pulley, or a sprocket. In some embodiments, when the transmission member B333 is a bevel gear, the rotation axis of the second drive member B332 is perpendicular to the rotation axis of the first drive member B331. In some embodiments, the outer diameter of the transmission member B333 is smaller than the outer diameter of the first drive member B331. In this case, the second drive member B332 can be arranged above or below the first drive member B331, thereby reducing the space occupied by the adjustment mechanism B3 in the length direction X and / or width direction Y of the seat B100. In some embodiments, the transmission member B333 is fixedly connected to the first drive member B331, or detachably connected to the first drive member B331 through some connecting parts, as long as the first drive member B331 can be driven to move when the transmission member B333 moves.

[0172] Thus, by setting a transmission component B333 that is coaxially connected to the first driving component B331, it is beneficial to optimize the transmission structure between the first driving component B331 and the second driving component B332, so that the structure of the adjustment mechanism B3 is more compact, thereby saving space.

[0173] In some embodiments, the diameter of the transmission member B333 is smaller than the diameter of the first drive member B331.

[0174] Referring again to Figures 32 to 37, in some embodiments, the drive assembly B33 further includes a connector B334 and a power component B335. One end of the connector B334 is connected to the second drive component B332, and the other end of the connector B334 is fixedly connected to the power component B335. The power component B335 is used to provide driving force to drive the second drive component B332 to rotate.

[0175] This application does not limit the structure of the connector B334. For example, the connector B334 may be a connecting rod, which is coaxially and fixedly connected to the second drive member B332.

[0176] This application does not limit the type of the power component B335. For example, the power component B335 can be a manually operable knob or handle, or an automatically controlled electric motor, as long as it can provide the driving force to drive the second drive component B332 to rotate.

[0177] Referring again to Figures 32 to 37, in some embodiments, the drive assembly B33 further includes a bracket B336, which is fixedly connected to the seat portion B1. A connector B334 is rotatably supported on the bracket B336. The second drive member B332 and the power member B335 are located on opposite sides of the bracket B336. The bracket B336 is used to position and mount the second drive member B332, the connector B334, and the power member B335 of the drive assembly B33.

[0178] Referring again to Figures 32 to 37, in some embodiments, the power component B335 can be a manual knob. When the height of the seat B100 needs to be adjusted, the manual knob is rotated. The manual knob drives the second drive component B332 (e.g., a second bevel gear) to rotate via the connecting member B334. The second drive component B332 drives the transmission component B333 (e.g., a first bevel gear) to rotate. The transmission component B333 drives the first drive component B331 to rotate. The first drive component B331 drives the pusher component B31 to rotate. The rotating pusher component B31 drives the pusher component B32 to move along the height direction Z. The pusher component B32 causes the adjusting part B2 to slide relative to the seat part B1, thereby realizing the height adjustment of the seat B100. In some embodiments, as shown in Figures 32 to 37, the manual knob can be located on the front side of the seat part B1 for easy manual operation by the user. By setting a manually operable knob as the power component B335, the structure is simple, easy to use and operate, and cost-effective.

[0179] Referring to Figures 33 to 37, in some embodiments, the seat portion B1 is provided with at least two pushers B31, and the adjustment portion B2 is provided with at least two pushers B32. The at least two pushers B31 are spaced apart, each pusher B31 is connected to one pusher B32, and both pushers B31 are driven connected to the drive assembly B33.

[0180] For example, in some embodiments, as shown in FIG33, two pushers B31 and two pushers B32 may be provided, and the two pushers B31 are symmetrically arranged with respect to the rotation axis of the first drive member B331 and both engage with the first drive member B331; each pusher B32 is connected to one pusher B31 and is fixedly connected to the adjustment part B2. In some embodiments, the two pushers B31 are respectively provided on opposite sides of the seat part B1 along the width direction Y of the seat B100. In other embodiments, as shown in FIG34, three pushers B31 and three pushers B32 may be provided, and the three pushers B31 are distributed around the first drive member B331 and all engage with the first drive member B331; each pusher B32 is correspondingly connected to one pusher B31 and is fixedly connected to the adjustment part B2. In some other embodiments, as shown in Figures 35 and 36, four pushers B31 and four pushers B32 may be provided, with the four pushers B32 located at the four corners of the seat portion B1, and the four pushers B31 distributed around the first drive member B331, with all four pushers B31 engaging with the first drive member B331.

[0181] The drive assembly B33 drives at least two pushers B31 to rotate simultaneously. Each pusher B31 drives its corresponding pusher B32 to move synchronously along the height direction Z. All pushers B32 together drive the adjustment part B2 to move relative to the seat part B1 along the height direction Z.

[0182] Thus, by setting at least two pushing members B31 and at least two pushing members B32, the force is distributed and evenly distributed, and the adjustment mechanism B3 provides more stable support for the seat part B1, which is beneficial to improving the stability when adjusting the height of the seat B100, and also helps to improve the load-bearing capacity of the seat B100.

[0183] Referring to Figures 37 to 39, Figure 38 shows a cross-sectional view of section BB in Figure 27, wherein the adjustment part B2 is in a first position; Figure 39 shows a schematic diagram of the internal structure of the seat B100 according to some embodiments of this application, wherein the adjustment part B2 is in a second position. In some embodiments, the seat part B1 is provided with an installation space B10, and the pusher B31 and the drive assembly B33 are disposed in the installation space B10. The seat part B1 can provide an installation space B10 for the adjustment mechanism B3, so that at least a part of the structure of the adjustment mechanism B3 is disposed inside the seat part B1. In this way, the adjustment mechanism B3 is avoided from being exposed, which is beneficial to improving the safety and aesthetics of the seat B100, and the structure is compact and saves space.

[0184] Referring again to Figures 36 to 39, in some embodiments, the seat portion B1 includes an upper seat cover B11 and a lower seat cover B12, which overlap each other and together define an installation space B10. The seat portion B1 can adopt various structures. For example, the lower seat cover B12 can be a hollow structure with one open end, forming an installation groove B121. The upper seat cover B11 can be a plate-like structure, covering the open side of the lower seat cover B12, so that the upper seat cover B11 and the lower seat cover B12 together define the installation space B10. Alternatively, both the upper seat cover B11 and the lower seat cover B12 can be hollow structures with one open side, with the open side of the upper seat cover B11 covering the open side of the lower seat cover B12. Of course, the seat portion B1 formed by the upper seat cover B11 and the lower seat cover B12 can be of various shapes, such as a cylinder or a cuboid. The seating surface B111 of the seat portion B1 is provided on the side of the upper seat cover B11 that is opposite to the lower seat cover B12.

[0185] Referring to Figures 37 to 39, in some embodiments, the pusher B32 passes through the seat cover B12, with one end of the pusher B32 extending into the mounting space B10 and connecting to the pusher B31. The other end of the pusher B32 is fixedly connected to the adjustment part B2. Thus, the pusher B32 extends into the mounting space B10, allowing the pusher B31 to connect smoothly with the pusher B32, and the structure is compact, saving space.

[0186] In some embodiments, as shown in Figures 35 to 39, the first driving member B331 is rotatably connected to the center of the mounting groove B121 of the seat cover B12. The first driving member B331 is a gear; the transmission member B333 is a first bevel gear, which is coaxially fixedly connected to the first driving member B331 so that the first driving member B331 can rotate with the rotation of the first bevel gear; the pushing member B31 is a nut with an external gear B311, and four nuts are rotatably disposed at the four corners of the mounting groove B121, and the four nuts are distributed around the first driving member B331 and simultaneously mesh with the first driving member B331; the pushing member B32 is a screw, and the four screws are threadedly connected to the four nuts one-to-one, that is, the nuts are sleeved. The four pushers B32 are connected to the screw, so that they are located at the four corners of the seat section B1. The lower end of the pusher B32 is fixedly connected to the adjustment section B2, and the upper end of the pusher B32 extends through the lower seat cover B12 into the installation space B10. The second drive member B332 is a second bevel gear, which is fixedly connected to the power member B335 through the connector B334, which is a connecting rod. The power member B335 is a manual knob. The second bevel gear meshes with the first bevel gear. At this time, the rotation axis of the second drive member B332 is perpendicular to the rotation axis of the first drive member B331. The bracket B336 is fixedly connected in the mounting groove B121 and is used to position the second bevel gear, the connecting rod, and the manual knob. When adjusting the height of seat B100, rotate the manual knob. The manual knob drives the second bevel gear to rotate via the connecting rod. The second bevel gear drives the first bevel gear to rotate. The first bevel gear drives the first drive component B331 to rotate. The first drive component B331 drives the four nuts to rotate simultaneously. Since the nuts are threadedly connected to the screws, the rotating nuts drive the screws to move along the height direction Z. The four screws together drive the adjusting part B2 to slide relative to the seat part B1 along the height direction Z, thereby adjusting the height of seat B100.

[0187] Referring to Figures 32 to 36 and 38, in some embodiments, the seat portion B1 is provided with at least one set of support portions B122. Each set of support portions B122 includes at least three support portions B122 spaced apart, and the lines connecting the at least three support portions B122 in the same set form a polygonal structure. The push member B31 is rotatably disposed in the area defined by the at least three support portions B122 in the same set. The adjustment mechanism B3 further includes at least one positioning member B34, which is connected to the at least three support portions B122 in the same set and abuts against the push member B31 to position the push member B31 on the seat portion B1. The positioning member B34 abuts against the push member B31 mainly to position the push member B31 without affecting the normal rotation of the push member B31.

[0188] At least three support portions B122 of the same group can define a positioning area on the seat portion B1 for mounting the pusher B31, facilitating quick assembly of the pusher B31 to the seat portion B1; and the positioning member B34 is connected to the seat portion B1 via the at least three support portions B122 of the same group, forming at least a three-point connection between the positioning member B34 and the seat portion B1. For example, the number of support portions B122 can be three, four, five or more. In some embodiments, the support portion B122 can be a pillar disposed in a mounting groove B121 on the seat cover B12 of the seat portion B1.

[0189] Positioning member B34 is used to position pushing member B31 on seat portion B1. The shape of positioning member B34 may be, but is not limited to, sheet-like, plate-like, or block-like. The projected outline of positioning member B34 on a projection plane perpendicular to the height direction Z may be, but is not limited to, triangular, quadrilateral, circular, or elliptical, as long as positioning member B34 can limit pushing member B31 on seat portion B1. The material of positioning member B34 may be, but is not limited to, metal, engineering plastic, or composite material. For example, metal may be iron, stainless steel, or aluminum alloy, and composite material may be carbon fiber, glass fiber, etc. In some embodiments, push member B32 may be connected to positioning member B34 to position push member B32.

[0190] In some embodiments, as shown in Figures 32 to 36, each set of support portions B122 on the seat portion B1 has three support portions B122 arranged in a triangular pattern. The positioning member B34 can be a triangular iron piece, with its three corners connected to the three support portions B122, thereby connecting the positioning member B34 to the seat portion B1 at three points. The pushing member B31 is rotatably mounted within the space defined by the seat portion B1, the three support portions B122 of the same set, and the positioning member B34. By providing the support portions B122 and the positioning member B34 connected to the support portions B122, and with the positioning member B34 abutting against the pushing member B31, the pushing member B31 can be quickly installed and positioned on the seat portion B1. Moreover, the positioning member B34 is connected to the seat portion B1 at least at three points, ensuring a firm and reliable connection, effectively improving the limiting effect on the pushing member B31, thereby enhancing the stability and reliability of the adjustment mechanism B3.

[0191] Referring to Figure 37, in some embodiments, a connecting post B124 is provided on the seat portion B1. A first driving member B331 is sleeved on a transmission member B333, and the transmission member B333 is sleeved on the connecting post B124, so as to rotatably connect the first driving member B331 and the transmission member B333 to the seat portion B1. At the same time, the stepped surface on the lower side of the transmission member B333 blocks and limits the first driving member B331 on the seat portion B1. A gasket B36 is connected to the top of the connecting post B124 by a fastener B5. The gasket B36 blocks the side of the transmission member B333 away from the seat portion B1, which can prevent the transmission member B333 from detaching from the seat portion B1, thereby achieving vertical positioning of the transmission member B333 to limit the transmission member B333 on the seat portion B1.

[0192] Referring to FIG38, in some embodiments, the seat portion B1 is provided with a connecting protrusion B123, the connecting protrusion B123 is located between at least three support portions B122, and the pusher B31 is sleeved on the connecting protrusion B123 to rotatably connect the pusher B31 to the seat portion B1.

[0193] In some embodiments, the connecting ring B123 has a through hole penetrating the bottom of the seat portion B1, and the pusher B32 passes through the through hole of the connecting ring B123 so that the end of the pusher B32 away from the adjustment portion B2 extends into the seat portion B1. The pusher B31 and the positioning member B34 are sleeved on the pusher B32, and the positioning member B34 is also used to position the pusher B32 relative to the seat portion B1.

[0194] Referring again to Figure 38, in some embodiments, the adjustment mechanism B3 further includes a blocking member B35. The blocking member B35 is disposed on the end of the pushing member B32 away from the adjustment portion B2. The blocking member B35 abuts against the side of the positioning member B34 opposite to the pushing member B31. The blocking member B35 prevents the pushing member B32 from continuing to move downwards towards the seat portion B1, thereby limiting the movement position of the pushing member B32 along the height direction Z, and thus restricting the relative position between the adjustment portion B2 and the seat portion B1. In some embodiments, when the blocking member B35 abuts against the positioning member B34, the adjustment portion B2 is in a first position extending the maximum distance beyond the seat portion B1. This application does not limit the shape and structure of the blocking member B35. For example, the blocking member B35 can be a stop, a baffle, or a post, as long as it can abut against the positioning member B34 to prevent the pushing member B32 from continuing to move. In some embodiments, as shown in FIG38, a blocking member B35 is provided on one end of the push member B32 that extends into the mounting space B10 of the seat portion B1. By providing a blocking member B35 on the push member B32, the blocking member B35 abuts against the positioning member B34, which limits the distance by which the adjusting part B2 extends out of the seat portion B1, preventing the adjusting part B2 from disengaging from the seat portion B1 and improving the reliability of the adjusting mechanism B3.

[0195] Referring to Figures 37 to 39, in some embodiments, a first guide portion B13 is provided on the bottom side of the seat portion B1, and a second guide portion B21 is provided on the adjustment portion B2 corresponding to the first guide portion B13. The first guide portion B13 and / or the second guide portion B21 extend along the height direction Z, and the first guide portion B13 and the second guide portion B21 are slidably connected.

[0196] The first guide section B13 and the second guide section B21 are used to guide and limit the movement of the adjustment section B2 relative to the seat section B1. For example, the first guide portion B13 can extend along the height direction Z, and the second guide portion B21 can be slidably connected to the first guide portion B13. When the pusher B32 drives the adjustment portion B2 to move relative to the seat portion B1, the second guide portion B21 slides along the first guide portion B13, which can guide the adjustment portion B2 to move along the height direction Z. Alternatively, the second guide portion B21 can extend along the height direction Z, and the first guide portion B13 can be slidably connected to the second guide portion B21. When the pusher B32 drives the adjustment portion B2 to move relative to the seat portion B1, the first guide portion B13 slides along the second guide portion B21, which can guide the adjustment portion B2 to move along the height direction Z. Alternatively, both the first guide portion B13 and the second guide portion B21 can extend along the height direction Z. When the pusher B32 drives the adjustment portion B2 to move relative to the seat portion B1, the first guide portion B13 and the second guide portion B21 slide relative to each other, which can guide the adjustment portion B2 to move along the height direction Z.

[0197] This application does not limit the shape or structure of the first guide portion B13 and the second guide portion B21. For example, one of the first guide portion B13 and the second guide portion B21 may be a guide groove or a guide rail, and the other may be a rib or a slider. The rib or slider slides along the guide groove or guide rail, thereby guiding and limiting the movement of the adjustment portion B2 relative to the seat portion B1.

[0198] By setting the first guide part B13 and the second guide part B21 with sliding fit connection, the movement of the adjustment part B2 relative to the seat part B1 can be guided and limited, and the movement of the adjustment part B2 relative to the seat part B1 in the height direction Z is not easily deviated, thereby improving the stability of the height of the adjustable seat B100.

[0199] Referring to Figures 37 to 41, Figure 40 shows a schematic diagram of the structure of the adjustment part B2 in some embodiments of this application, and Figure 41 shows a schematic diagram of the structure of the seat part B1 in some embodiments of this application. In some embodiments, the first guide part B13 is a groove with an opening facing the lower side of the seat part B1, and the groove extends circumferentially along the seat part B1; the second guide part B21 is a rib protruding from the upper side of the adjustment part B2, and the rib extends circumferentially along the adjustment part B2; when the adjustment mechanism B3 drives the adjustment part B2 to move relative to the seat part B1, the rib moves along the groove to adjust the height of the seat part B1. For example, as shown in Figures 37 to 39, the rib of the adjustment part B2 is slidably disposed in the groove of the seat part B1 along the height direction Z, thereby realizing the sliding connection between the adjustment part B2 and the seat part B1. Since the groove extends circumferentially along the seat portion B1, the groove is formed into an annular groove; similarly, the rib of the adjustment portion B2 is an annular rib; the annular rib is slidably connected in the annular groove, which can restrict the relative movement between the adjustment portion B2 and the seat portion B1 in the circumferential direction of the seat portion B1, so that the adjustment portion B2 can only move relative to the seat portion B1 in the height direction Z.

[0200] In some embodiments, as shown in FIG39, when the adjusting part B2 is in the second position retracted into the seat part B1, the protruding rib of the adjusting part B2 can abut against the bottom of the groove of the seat part B1, thereby limiting the retracted position of the adjusting part B2. This enhances the guiding and limiting effect of the first guide part B13 and the second guide part B21 on the movement of the adjusting part B2 relative to the seat part B1, making the movement of the adjusting part B2 relative to the seat part B1 more stable and less prone to wobbling. This effectively improves the stability of the height of the adjustable seat B100, thereby enhancing the user experience.

[0201] Referring to Figures 38 and 40 to 42, Figure 42 shows a cross-sectional view of section CC in Figure 31. In some embodiments, the adjusting part B2 is provided with a fixing part B22, and the fixing part B22 is provided with a limiting part B221; the pushing member B32 is provided with an anti-rotation part B321. The pushing member B32 is connected to the fixing part B22, and the anti-rotation part B321 is engaged with the limiting part B221 to restrict the rotation of the pushing member B32 relative to the adjusting part B2. This application does not limit the connection structure between the fixing part B22 and the pushing member B32, as long as the pushing member B32 can be fixedly connected to the adjusting part B2. For example, the fixing part B22 can be a fixing post, a fixing hole, or a fixing groove, and the pushing member B32 can be correspondingly provided with a fixing groove, a fixing hole, or a fixing post. This application does not limit the structure of the limiting part B221 and the anti-rotation part B321, as long as the pushing part B32 can prevent the pushing part B32 from rotating relative to the adjusting part B2 after it is connected to the fixing part B22. For example, one of the limiting part B221 and the anti-rotation part B321 can be a limiting groove or a limiting hole, etc., and the other can be a corresponding anti-rotation rib or anti-rotation protrusion, etc.

[0202] In some embodiments, as shown in Figures 38, 40, and 42, the fixing part B22 may be a fixing post protruding from the adjusting part B2, and the limiting part B221 may be a limiting groove formed on the outer periphery of the fixing post, extending along the height direction Z of the fixing post; the top of the fixing post may also have a connecting hole B222. As shown in Figures 38, 41, and 42, the bottom end of the pushing member B32 may have a insertion hole B322, and the anti-rotation part B321 may be an anti-rotation rib protruding from the inner sidewall of the insertion hole B322. The bottom of the insertion hole B322 is connected to a fastener B5, such as, but not limited to, a screw or bolt. When the jacking component B32 is installed with the adjusting part B2, the jacking component B32 is inserted into the fixed column through the insertion hole B322. Simultaneously, the anti-rotation rib in the insertion hole B322 is slidably engaged with the limiting groove on the fixed column. The fastener B5 is securely connected to the connecting hole B222 at the top of the fixed column, thus fixing the jacking component B32 and the adjusting part B2 together. By setting the limiting part B221 on the fixed part B22 to engage with the anti-rotation part B321 on the jacking component B32, rotation of the jacking component B32 relative to the adjusting part B2 can be prevented. This ensures that when the pushing component B31 rotates, it can drive the jacking component B32 to move along the height direction Z, improving the reliability of the adjusting mechanism B3.

[0203] Referring to Figure 42, in some embodiments, the first driving member B331 is provided with a limiting groove B3311, and the transmission member B333 is provided with a limiting protrusion B3331. The limiting protrusion B3331 and the limiting groove B3311 are connected to each other so that the transmission member B333 can drive the first driving member B331 to rotate synchronously when it rotates.

[0204] Referring to Figure 43, which shows a partial structural schematic diagram of the adjustment part B2 of the seat B100 in a first position according to some other embodiments of the present application, in some embodiments, the power component B335 can be a drive motor. The drive motor can be mounted on the lower seat cover B12 of the seat part B1 via a bracket B336. The drive motor is connected to the second drive component B332 via a connector B334. The drive motor drives the second drive component B332 to rotate, thereby realizing the electric adjustment of the height of the seat B100.

[0205] In some embodiments, as shown in FIG44, which illustrates a perspective structural schematic diagram of the seat B100 according to other embodiments of this application, the adjustment mechanism B3 may further include an electric adjustment button. The electric adjustment button may be disposed on the seat portion B1 and electrically connected to the drive motor. The electric adjustment button can control the adjustment mechanism B3 to automatically adjust the height of the seat B100. In some embodiments, the electric adjustment button may include a first button B371 and a second button B372. One of the first button B371 and the second button B372 is used to raise the height of the seat B100, and the other is used to lower the height of the seat B100. For example, the first button B371 may be a raise button, and the second button B372 may be a lower button. When the height of the seat B100 needs to be adjusted, pressing the first button B371 or the second button B372 will cause the drive motor to drive the second drive member B332 to rotate, thereby adjusting the height of the seat B100. By setting the drive motor as the power component B335, the height of the seat B100 can be adjusted electrically by the adjustment mechanism B3. No manual operation is required, making it simple and convenient to use, saving time and effort, and improving the user experience.

[0206] 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.

[0207] The embodiments described above illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A seat height adjustment mechanism for adjusting the height of the seating surface of a child safety seat relative to the mounting surface of the seat, the seat height adjustment mechanism comprising: A first adjustment surface and a second adjustment surface are located on the bottom side of the seat portion and have different heights relative to the seating surface; as well as An adjustment member is provided on the underside of the seat portion and has a first position and a second position. In the first position, the adjusting member abuts against the first adjusting surface; in the second position, the adjusting member abuts against the second adjusting surface, and the adjusting member is capable of switching between the first position and the second position.

2. The seat height adjustment mechanism of claim 1, wherein, The first adjustment surface and the second adjustment surface extend along the transverse central axis in the left-right direction or the longitudinal central axis in the front-back direction of the seat portion. The first adjustment surface includes two first sub-adjustment surfaces symmetrically arranged with respect to the axis on a horizontal plane, and the second adjustment surface includes two second sub-adjustment surfaces symmetrically arranged with respect to the axis on another horizontal plane.

3. The seat height adjustment mechanism of claim 2, wherein, The seat height adjustment mechanism is provided with two adjustment members, which are symmetrically arranged between opposite side walls on the bottom side of the seat with respect to the axis, so as to abut against the corresponding first sub-adjustment surface at the first position and against the corresponding second sub-adjustment surface at the second position.

4. The seat height adjustment mechanism of claim 2, wherein, The adjusting member has: The support body extends along the longitudinal direction of the adjustment member to abut against the first adjustment surface at the first position and against the second adjustment surface at the second position.

5. The seat height adjustment mechanism of claim 4, wherein, The adjusting member has: Connecting columns are provided at both longitudinal ends of the support body, and the adjusting member can be movably installed on the opposite side wall through the connecting columns.

6. The seat height adjustment mechanism of claim 5, wherein, The adjusting component also has a support arm that extends substantially vertically from both ends of the longitudinal direction of the supporting body, and the connecting post is disposed at the free end of the support arm.

7. The seat height adjustment mechanism of claim 1, wherein, The surface of the adjusting member that abuts against the adjusting surface has a complementary shape to the adjusting surface.

8. The seat height adjustment mechanism of claim 6, wherein, A pair of sliding grooves are provided on each of the opposite sidewalls. The pair of sliding grooves are inclined relative to the mounting surface and symmetrically positioned relative to the axis to install the connecting posts of the two adjusting members respectively, so that the two adjusting members can slide in their respective sliding grooves through their connecting posts, thereby moving between the first position and the second position.

9. The seat height adjustment mechanism of claim 2, wherein, The seat height adjustment mechanism further includes a third adjustment surface located on the bottom side of the seat portion and having a third height relative to the seating surface. The adjustment member also has a third position. When in the third position, the adjustment member abuts against the third adjustment surface, and the adjustment member can switch between the first position, the second position, and the third position.

10. A seat portion, wherein a seat height adjustment mechanism as described in any one of claims 1-9 is provided on the bottom side of the seat portion; the seat portion comprises: The upper housing of the seat portion forms the seating surface on its upper surface; The lower housing of the seat is formed below the upper housing of the seat, and the seat height adjustment mechanism is disposed in a recessed portion formed on the lower surface of the lower housing of the seat.

11. The seat bottom of Claim 10 wherein, The seat portion is provided with armrests on both sides, each armrest being a C-shaped component with an opening facing forward, and having the following characteristics: The lower section extends backward and upward at the midpoint of each of the longitudinal sides of the seating surface to serve as a seat belt guide surface; A vertical portion, extending vertically upward from the rear end of the lower section; and The upper section extends forward from the top of the vertical section.

12. A seat, having a height orientation, comprising: Seating area; An adjustment section is movably connected to the seat section and is used to support the seat section; as well as Adjustment agencies include: A pusher is rotatably disposed on the seat portion; A pusher is connected to the adjusting part; the pusher is connected to the pusher to movably connect the adjusting part to the seat part; and A drive assembly is connected to the pusher, which can drive the pusher to rotate. When the pusher rotates, it drives the pusher to move along the height direction, thereby causing the adjustment part to move relative to the seat part along the height direction, so as to adjust and position the height of the seat part.

13. The seat of claim 12, wherein, The seat portion is provided with at least two of the aforementioned push members, and the adjustment portion is provided with at least two of the aforementioned push members. The at least two push members are spaced apart, each of the aforementioned push members is connected to one of the aforementioned push members, and at least two of the aforementioned push members are driven connected to the drive assembly.

14. The seat of claim 12, wherein, The driving assembly includes a first driving member and a second driving member. The first driving member is driven to the push member, and the second driving member is driven to the first driving member. When the second driving member is driven, the second driving member drives the first driving member to rotate so as to drive the push member to rotate.

15. The seat of claim 14, wherein, The drive assembly further includes a transmission component, which is coaxially connected to the first drive component and drively connected to the second drive component. The second drive component drives the transmission component to rotate, and the transmission component drives the first drive component to rotate.

16. The seat of claim 12, wherein, The projection of the seat portion onto a projection plane perpendicular to the height direction overlaps the projection of the adjustment portion onto that projection plane.

17. The seat of claim 12, wherein, The seat portion includes an upper seat cover and a lower seat cover, which overlap each other to define an installation space. The pusher is inserted through the lower seat cover to extend one end of the pusher into the installation space and connect with the pusher.

18. The seat of claim 12, wherein, The bottom side of the seat is provided with a first guide portion, and the adjustment portion is provided with a second guide portion corresponding to the first guide portion. The first guide portion and / or the second guide portion extend along the height direction, and the first guide portion and the second guide portion are slidably connected.

19. The seat of claim 12, wherein, The adjusting part is provided with a fixing part, the fixing part is provided with a limiting part, and the pushing member is provided with an anti-rotation part. The pushing member is connected to the fixing part, and the anti-rotation part is connected with the limiting part to restrict the pushing member from rotating relative to the adjusting part.

20. The seat of claim 12, wherein, The seat portion is provided with at least one set of support portions, each set of support portions including at least three support portions spaced apart, and the line connecting the at least three support portions in the same set is a polygonal structure. The pusher is rotatably disposed in the area defined by the at least three support portions in the same set. The adjustment mechanism also includes at least one positioning member, which is connected to the at least three support portions in the same set. The pusher can be connected to the positioning member to position it and abuts against the pusher to position the pusher on the seat portion.

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