CN210554333U

CN210554333U - Automobile safety seat

Info

Publication number: CN210554333U
Application number: CN201920738741.8U
Authority: CN
Inventors: 周育德; 侯仁恩; 罗红华; 唐瑞铭; 宋绍龙
Original assignee: Dorel France SAS
Current assignee: Shanghai Le Ruiying Ltd; Zhongshan Lemeida Baby Products Co ltd
Priority date: 2017-08-17
Filing date: 2018-08-17
Publication date: 2020-05-19
Anticipated expiration: 2028-08-17
Also published as: CN109050357B; CN109050357A; CN209096539U; CN107499198A

Abstract

The utility model discloses an automobile safety seat, which comprises a base which can be fixed by a safety belt, an automobile seat body and a headrest, wherein the automobile seat body can be arranged on the base in the front direction or the back direction, the headrest is arranged on the automobile seat body and can be adjusted in a first height interval and a second height interval, and the first height interval is higher than the second height interval; still including installing in the backstop piece between two high intervals, the second on first interference piece on the base and the vapour seat body interferes the piece, the backstop piece, the second interferes the piece, form the interlock relation in proper order between first interference and the safety belt, with the help of the position of the first interference piece of safety belt control, thereby whether produce the interference effect between further control first interference piece and the second interference piece, use the safety belt unable adjustment base with this warning head of parents, promptly under the condition that needs to use safety belt unable adjustment base, must use safety belt unable adjustment base, just can adjust the head rest to specific height, in order to avoid appearing forgetting the condition of using safety belt unable adjustment base, guarantee children safety by bus.

Description

Automobile safety seat

The application is a divisional application of a vehicle safety seat with application number 201821327005.5 on the day of 08 and 17 in 2018.

Technical Field

The utility model relates to a children's safety device especially relates to a car safety seat.

Background

In daily life, children are generally held by adults when riding in vehicles, especially cars. Under the condition of automobile sudden braking or automobile collision, the head of a child easily bumps into the back of a front-row seat, and even more, the child falls off from the seat under the action of inertia, so that the personal safety of the child is greatly threatened.

As shown in fig. 1 and 2, the car safety seat 100 includes a base 10, a car seat body 20 and a headrest 30, the headrest 30 is installed on a backrest 22 of the car seat body 20, the base 10 is fixed on a back seat of a car, and the installation position and orientation of the base are fixed and generally adopt a manner defined by an industry standard: ISOFIX or LATCH, the car seat body 20 is mounted on the base 10 by a LATCH of the base 10 and/or a safety belt of the car itself.

The automobile seat body generally has two mounting modes: the other is a backward installation mode (the automobile seat body is back to the front of the automobile, see fig. 1), the backrest of the automobile safety seat is opposite to the backrest of the automobile seat, for a newborn, the automobile seat body of the automobile safety seat adopts the backward installation mode, and at the moment, the safety requirement can be met only by connecting the automobile seat body with a bolt on the base. Another is a forward mounting (the car seat body faces forward of the car, see fig. 2) where the back of the car safety seat abuts the back of the car seat.

The prior automobile safety seat has the following obvious defects: when adopting to the preceding mounting means, to the infant within certain weight (generally be under three years old), because 0 ~ 3 year old child weight is lighter, when using safety seat, safety seat relies on ISOFIX to fix on car seat, just enough guarantees 0 ~ 3 year old child's safety, consequently need not to use on-vehicle safety belt to tie up safety seat. For a child or a child with a heavy weight, when the automobile is impacted, the anchoring ring connected with the ISOFIX in the automobile may be broken due to the heavy impact of the weight of the child on the ISOFIX, so that for the child at this age, the base of the automobile safety seat needs to be fixed by the automobile-mounted safety belt. In the actual use process, the situation that the automobile safety seat is forgotten to be fixed by using the automobile-mounted safety belt exists, and the existing automobile safety seat does not have a related reminding function.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a car safety seat, when forward installation, must use safety belt unable adjustment base, just can adjust specific height with the head rest to avoid appearing forgetting the condition of using safety belt unable adjustment base, in order to guarantee children's safety.

The above object of the present invention is achieved by the following technical measures: the utility model provides an automobile safety seat, includes fixed base, vapour seat body of accessible safety belt and headrest, vapour seat body mainly comprises pedestal and back, vapour seat body can install on the base forward or backward through the pedestal, the headrest is installed on vapour seat body's back and can be in first height interval and the interval adjustment of second height in order to adjust its height, first height interval is higher than the interval of second height, its characterized in that, automobile safety seat still includes:

the stop block is arranged between the first height interval and the second height interval, is switched between a stop position and a release position, blocks the headrest from rising at the stop position, and does not block the headrest at the release position;

the first interference piece is arranged on the base and can be switched between a third position and a fourth position under the linkage of the safety belt;

the second interference piece is arranged on the steam seat body, is switched between a first position and a second position, and is used for connecting the stop block to be switched between a stop position and a release position which respectively correspond to the first position and the second position;

when the steam seat body is arranged on the base in the forward direction, the second interference piece corresponds to the first interference piece, the first interference piece located at the fourth position limits the second interference piece to enable the second interference piece to be located at the first position, the stop block is located at the stop position, and the headrest is prevented from rising to the first height section from the second height section; the safety belt controls the first interference piece to be switched to the third position, the second interference piece is relieved from being limited by the second interference piece, the stop block is switched to the release position, the stop of the headrest is relieved, and the headrest is allowed to rise from the second height interval to the first height interval.

The utility model discloses when preceding to the installation, whether use on-vehicle safety belt reinforcement to associate with the altitude mixture control of head rest and base, specifically bring the position of the first interference of control with the help of safety ingeniously, thereby whether produce the interference effect between the first interference of further control and the second interference, remind the head of a family to use safety belt unable adjustment base with this, promptly under the condition that needs use safety belt unable adjustment base (the great infant of weight or for three years to six years's children), must use safety belt unable adjustment base, just can adjust the head rest to specific height, thereby avoid appearing forgetting the condition of using safety belt unable adjustment base, guarantee children safety by bus.

The first interference piece is telescopically arranged, and is positioned at the fourth position when extending out, and is positioned at the third position when retracting.

The second interference piece articulates in the pedestal of vapour seat body and has the second elastic component that resets, the second elastic component that resets provides the effort that switches back the second position from the first position for the second interference piece, and the second interference piece takes place to rotate and makes the backstop piece be in the release position at the in-process that switches back the second position from the first position, and the spacing second interference piece of first interference piece makes its antiport and make the backstop piece be in the backstop position.

First interference piece is vertical to be installed on the base top surface, first interference piece upwards stretches out to support and holds the second interference piece and carry out spacing or indentation downwards to it in order to withdraw spacing to the second interference piece.

First interference piece has first elastic component that resets, first elastic component that resets extends in vertical and makes first interference piece stretch out and for first interference piece provides the effort of switching back the fourth position by the third position by oneself, or first elastic component that resets is followed the in-process that first position switched back the second position at the second interference piece and is taken place to rotate and compressed and make first interference piece indentation when pushing down first interference piece.

The base has the installation cavity set up the butt piece that has the third elastic component that resets in the installation cavity, the butt piece can switch between fifth position and sixth position, when the butt piece was in the fifth position, it made first interference piece keep at the fourth position with first interference piece conflict cooperation, when the butt piece was in the sixth position, it broke away from with first interference piece and allowed first interference piece to switch to the third position, safety belt linkage butt piece switches to the sixth position by the fifth position, the third elastic component that resets provides the effort that the butt piece switched back the fifth position by the sixth position by oneself.

The butt piece takes place the interlock through the drive mechanism who locates in the installation cavity and safety belt, drive mechanism mainly comprises the support body and drives the body, the drive body is for following vertical setting and mobilizable microscler part, and its front end is relative with the support body to with the safety belt centre gripping between the two and produce the displacement, the butt piece is located the rear end of taking the kinetoplast and is even as an organic whole and can follow the motion of drive body with it and remove, so that after the safety belt was removed, the drive body can return to the normal position under the effect of third elastic component that resets, the butt piece is located first interference piece under, just the butt piece has convex part and the concave part of adjacent setting, works as when the drive body is in the normal position, the convex part is relative with first interference piece about with top contact first interference piece with it spacing in the fourth position, works as when the drive body produced the displacement, the butt piece moves thereupon and makes its concave part and first interference piece relative with top contact about with it to be right first interference piece cancel first interference The first interference piece is pressed downwards to retract when the second interference piece rotates, and the concave part provides a required accommodating space for the first interference piece.

The support body is the block body be equipped with vertical draw-in groove on the support body and the relative wall of drive body, the drive body is the lamellar body of vertical setting, and its front end has vertical section, vertical section has relative both sides limit, one of them side with thereby the draw-in groove is relative by this side with vertical safety belt bend and compress tightly in the draw-in groove, opposite side limit is connected the third one end of elastic component that resets, and its other end is fixed.

The top of the wall surface of the supporting body opposite to the driving body is provided with a flange for preventing the safety belt from being separated.

The utility model is also provided with a groove-shaped mounting rack which is arranged along the longitudinal direction in the mounting cavity, the supporting body is arranged on the front part of the mounting rack, a long hole is arranged on the bottom plate of the mounting rack and close to the abutting body, the belt moving body mainly comprises a front end vertical section, a middle section and a rear end vertical section, the middle section extends longitudinally along the lower surface of the mounting rack bottom plate, obliquely upwards passes through the elongated hole and upwards to form the rear end vertical section, a supporting block is arranged on the mounting rack and behind the driving body, the abutting block is a frame body which is horizontally arranged, the butt joint block is arranged on the top surface of the supporting block and can move along the longitudinal direction, the hollow part of the butt joint block is a concave part, the convex part is arranged on the frame body edge at the front end of the convex part, the first interference part is connected to the top surface of the supporting block through a first reset elastic part positioned in the concave part, and the rear end vertical section of the driving body is connected with the front end of the abutting block.

The support body can follow longitudinal sliding articulated on the lateral wall of mounting bracket have platelike operation portion, operation portion passes through connecting rod structure and supports the body and links to each other, turns over the operation portion on, supports and holds the body and takes place the displacement and make support the body and drive the clearance that produces between the body and supply the safety belt to pass by connecting rod structure drive, through closing operation portion down, supports the body and removes and push down by operation portion and fix a position so that the safety belt bends it and compresses tightly in the draw-in groove of supporting the body under the effect that the body received the third elastic component that resets at the driving body to opposite direction.

The utility model discloses an observe the state of binding of safety belt more directly perceivedly, drive mechanism still includes the display part, and this display part has first display part and second display part, first display part is a cavity block body and is located the rear of butt piece, open the top surface of first display part has the opening, the rear end of butt piece penetrates first display part, the second display part is located in the opening of first display part, just the second display part articulates on first display part and makes it remove along with the butt piece and take place to rotate with butt piece interlock, it has the display window to open on the top surface of base, the display window is corresponding with the display part to observe the state of binding of safety belt.

Drive mechanism still includes a display and in the display window of base top surface setting, the display window corresponds with the display, receives the drive of safety belt down, observes the display and switches different demonstration contents through the display window.

The utility model discloses form one between the pedestal of vapour seat body and base and dodge the groove, so that vapour seat body is to when installing on the base, for first interference is located the fourth position and provides required accommodation space in the time of outstanding in the base top surface.

As another embodiment of the present invention, the second interference piece is installed in the seat body of the car seat body and has a fourth elastic reset piece, the fourth elastic reset piece provides the acting force for the second interference piece to switch from the second position to the first position, the second interference piece can be driven by the stop block in the release position and move to make it be in the second position, the spacing second interference piece of the first interference piece makes it unable to move to make it be in the first position.

The pedestal bottom of vapour seat body has and holds the chamber, it is equipped with the through-hole on the bottom surface in chamber to hold, the second interference piece is the flat block body that has the jack, the second interference piece sets up and just can wherein remove and make jack and through-hole stagger and make to return to the normal position and make jack and through-hole corresponding in order to open the through-hole and make it be in the first position under the effect of fourth reset elastic component in holding the chamber and in order to close the through-hole with the through-hole messenger, first interference piece is vertical to be installed on the base top surface, works as when first interference piece is in the fourth position, first interference piece upwards passes in the through-hole stretches into the jack of second interference piece and carries on spacingly to it, works as when first interference piece is in the third position, first interference piece is retracted downwards in order to withdraw from spacing to the second interference piece.

The base of the utility model is provided with an installation cavity, a driving mechanism is arranged in the installation cavity, the driving mechanism mainly comprises a support frame with a fifth reset elastic piece and a safety belt detecting piece, the support frame is slidably arranged in the installation cavity along the longitudinal direction and can be restored under the action of the fifth reset elastic piece, and the first interference piece is movably arranged on the support frame and can be driven by the support frame to extend upwards or retract downwards when the first interference piece is restored; the safety belt detection piece is hinged in the base and located behind the supporting frame, in a home position state, the top surface of the safety belt detection piece is exposed out of the base, when the safety belt penetrates through the base and is pressed down on the top surface of the safety belt detection piece to enable the safety belt detection piece to rotate so as to push the supporting frame to move, or after the safety belt is removed, the safety belt detection piece is pushed by the supporting frame in the process of returning to the home position and returns to the home position.

The support frame has the chute that is located vertical plane, spanes the support frame and is fixed with a setting element of falling the U-shaped be equipped with the trompil on the top surface of setting element, first interference piece is the cylindricality body and passes the trompil of setting element downwards and support in the chute and can follow the chute slip so that first interference piece rises and stretch out or descend and the indentation, and the piece promotes and takes place the displacement by the safety belt when the support frame, first interference piece moves down and the indentation makes it be in the third position along the chute, and restores to the normal position when the support frame, first interference piece stretches out along chute rebound and makes it be in the fourth position.

The utility model discloses still be equipped with on the base and be used for pushing down the safety belt and press and move the safety belt and listen a pivoted safety belt oppression mechanism.

Safety belt oppression mechanism includes safety belt compelling piece and safety belt buckle closure, be equipped with the recess on the top surface of base, the top surface of piece is listened to the safety belt upwards stretches out in the recess, safety belt compelling piece and safety belt buckle closure set up relatively and articulate respectively on the cell wall of recess, the bottom surface of safety belt compelling piece is salient downwards, be equipped with buckle structure between safety belt compelling piece and the safety belt buckle closure, buckle the safety belt compelling piece and make the bottom surface of safety belt compelling piece push down vehicle-mounted safety belt and safety belt detection and make the safety belt detect the piece and take place to rotate when safety belt buckle closure buckle.

The pedestal bottom of vapour seat body is an independent angle adjustment seat that sets up, the pedestal of vapour seat body passes through angle adjustment seat links to each other with the base, promptly the chamber that holds of installing the second interference piece is located in the angle adjustment seat.

The second interference piece is connected with the stop block through a linkage piece to generate linkage.

The backstop piece has hinged end and the free end who articulates on vapour seat body back, be equipped with head rest adjustment structure between the back of head rest and vapour seat body, head rest adjustment structure is including setting up head rest adjustment part on the head rest and setting up the back adjustment part on back upper portion, head rest adjustment part realizes the head through sliding on back adjustment part and leans on the high regulation between second height interval and first height interval, the free end and the head rest adjustment part of backstop piece contact, and when the backstop piece was in the backstop position, the spacing head rest adjustment part of backstop piece made the head rest can not upwards be transferred to first height interval, and when the backstop piece was in the release position, upwards adjusted the head rest, the rotation took place under the circumstances that withdraws of backstop piece, and its free end no longer backstop head rest.

The utility model provides an automobile safety seat, includes fixed base, vapour seat body of accessible safety belt and headrest, vapour seat body mainly comprises pedestal and back, vapour seat body can install on the base forward or backward through the pedestal, the headrest is installed on vapour seat body's back and can be in first height interval and the interval adjustment of second height in order to adjust its height, first height interval is higher than the interval of second height, its characterized in that, automobile safety seat still includes:

when the steam seat body is arranged on the base in a forward direction, the second interference piece is aligned with the first interference piece, at the moment, if the headrest is located in the first height interval, the headrest abuts against the stop block to the release position, the stop block drives the second interference piece to move to the second position, and the steam seat body cannot be arranged on the base due to the fact that the second interference piece and the first interference piece are mutually pushed and cannot be arranged due to the fact that the safety belt is not arranged on the base.

Compared with the prior art, the utility model discloses the effect that is showing as follows has:

the utility model discloses when preceding to the installation, whether use on-vehicle safety belt reinforcement to associate with the altitude mixture control of head rest and base, specifically bring the position of the first interference of control with the help of safety ingeniously, thereby whether produce the interference effect between the first interference of further control and the second interference, remind the head of a family to use safety belt unable adjustment base with this, promptly under the condition that needs use safety belt unable adjustment base (the great infant of weight or for three years to six years's children), must use safety belt unable adjustment base, just can adjust the head rest to enough height, thereby avoid appearing forgetting the condition of using safety belt unable adjustment base, guarantee children safety by bus.

Drawings

The present invention will be described in further detail with reference to the following drawings and specific embodiments.

Fig. 1 is a schematic structural view of a rear-mounted car seat body in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of the front mounting of the car seat body in embodiment 1 of the present invention;

fig. 3 is a schematic structural view of a base according to embodiment 1 of the present invention;

fig. 4 is a schematic view of a headrest adjusting structure according to embodiment 1 of the present invention;

FIG. 5 is a schematic view of a second interference piece of embodiment 1 of the present invention mounted on a car seat body;

fig. 6 is a schematic structural view illustrating that the first interference member abuts against the second interference member after the headrest is arranged at the second height interval and the seat body is mounted on the base in the front direction in embodiment 1 of the present invention;

fig. 7 is a schematic view of the embodiment 1 of the present invention, in which the stop block is located at the stop position to block the headrest from being adjusted to the first height interval;

fig. 8 is a schematic view of the car seat body of embodiment 1 of the present invention installed to the base in the forward direction, and the first interference member and the second interference member released from abutting against each other when the base is fixed by the safety belt;

fig. 9 is a schematic view of the embodiment 1 of the present invention in which the stopper is located at the release position to release the blocking of the headrest to the first height section;

fig. 10 is an exploded view of the driving mechanism of embodiment 1 of the present invention;

fig. 11 is a schematic sectional view of the driving mechanism of the embodiment 1 of the present invention when the seat belt is not bound to the base;

fig. 12 is a schematic sectional view of the driving mechanism when the seat belt is fastened on the base according to embodiment 1 of the present invention;

fig. 13 is a schematic view showing that the first interference member and the second interference member are pushed against each other when the headrest is located in the first height interval and the car seat body is mounted on the base in advance in the forward direction according to embodiment 1 of the present invention;

fig. 14 is a schematic sectional view of the rear mounting of the car seat body according to embodiment 1 of the present invention;

fig. 15 is an exploded view of the structure of embodiment 2 of the present invention;

fig. 16 is an exploded view of the base structure of embodiment 2 of the present invention;

fig. 17 is an assembly structure diagram of the driving mechanism and the first interference member according to embodiment 2 of the present invention;

fig. 18 is a schematic structural view of the seat belt detecting member according to embodiment 2 of the present invention mounted on the upper cover of the base;

fig. 19 is a second schematic structural view of the seat belt detecting member according to embodiment 2 of the present invention mounted on the upper cover of the base;

fig. 20 is a schematic cross-sectional view of a base in embodiment 2 of the present invention (without a vehicle seat belt installed);

fig. 21 is a schematic cross-sectional view of a base (with a vehicle seat belt installed) according to embodiment 2 of the present invention;

fig. 22 is an exploded view of the angle adjustment base according to embodiment 2 of the present invention (showing the first interference member);

fig. 23 is an assembly view of the angle adjustment base according to embodiment 2 of the present invention (showing the first interference member at the fourth position);

fig. 24 is a schematic sectional view of the whole structure of embodiment 2 of the present invention;

fig. 25 is a schematic structural view of the body case according to embodiment 2 of the present invention.

The reference numerals in the drawings denote the following, respectively:

10-base, 13-front end, 14-rear end, 15-side wall, 16-safety belt groove, 100-automobile safety seat, 131-supporting leg, 132-first interference piece, 133-first reset elastic piece, 134-inclined plane, 20-automobile seat body, 21-seat body, 22-backrest, 211-second interference piece, 212-avoidance groove, 213-second reset elastic piece, 214-clamping protrusion, 221-headrest adjusting structure, 222-stop block, 223-linkage piece, 224-clamping tooth, 30-headrest, 40-driving mechanism, 41-operating part, 42-connecting rod structure, 43-supporting body, 44-driving body, 45-abutting block, 46-supporting block, 47-mounting rack and 48-display piece, 49-a first reset elastic piece, 481-a first display part, 482-a second display part, 483-a display window, 431-a wall surface, 432-a clamping groove, 433-a blocking edge, 451-a convex part, 452-a concave part, 50-a safety belt, H1-a first height section, H2-a second height section, 1-a base lower cover, 1 a-a positioning piece mounting column, 1 b-a support frame mounting column, 1 c-a return spring baffle, 1 d-a baffle, 2-a support frame, 2 a-U-shaped groove, 2 b-a return spring mounting column, 2 c-a rear end surface, 2 d-a chute, 3-a safety belt detection piece, 3 a-a front end surface, 3 b-a clamping hole column, 3 c-a top surface, 4-a safety belt pressing block, 4 a-hole pressing block, 4 a-a hole mounting column, 4 b-bottom surface, 5-linkage steel rope, 5 a-steel rope head, 6-linkage rotating piece, 6 a-limit surface, 6 b-second round hole, 6 c-clamp shaft, 7-headrest adjusting piece, 7 a-step surface, 8-body, 9-limit block, 9 a-jack, 9 b-cylinder, 9 c-first round hole, 10 ' -mode switching button, 10 a-third round hole, 10 b-top surface, 11-return spring, 12-base upper cover, 12 a-second clamp hole, 12 b-square hole, 12 c-third clamp hole, 12 d-fourth clamp hole, 12 e-first side hole, 12 f-groove, 12 g-second side hole, 13 ' -positioning screw, 14 ' -safety belt buckle cover, 14 a-clamping column, 15 '-compression spring, 16' -angle adjusting seat, 16 a-accommodating cavity, 16 b-through hole, 16 c-rear wall surface, 16 d-square hole, 17-positioning piece, 17 a-opening hole, 17 b-fourth round hole, 18-headrest component, 19-fixing screw, 20-supporting rod, 21-reinforcing iron support, 22-vehicle-mounted safety belt, 23-body shell, 23 a-first clamping hole and 101-mounting structure.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings, which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Example 1

As shown in fig. 1 to 3, the car seat of the present invention includes a base 10 fixed by a safety belt 50, a seat body 20 and a headrest 30. The base 10 is fixed to a vehicle seat by a seat belt 50 and/or a fastening mechanism (ISOFIX) (not shown) of the vehicle. The seat body 20 may be installed on the base 10 in a forward or backward direction. Referring to fig. 4, the headrest 30 is mounted on the backrest 22 of the car seat body 20 and is adjustable between a first height interval H1 (corresponding to the height of children over three years old) and a second height interval H2 (corresponding to the height of children under three years old), wherein the first height interval H1 is higher than the second height interval H2.

Referring to fig. 3, in an actual production process, the base 10 is generally formed by combining an upper cover body and a lower cover body by a screw connection or the like. The base 10 includes a front end 13, a rear end 14 and two sidewalls 15 connecting the front end 13 and the rear end 14, respectively. The front end 13 is provided with a supporting leg 131, and the supporting leg 131 abuts against the floor of the automobile to assist in supporting the whole automobile safety seat. A belt groove 16 is formed through both side walls 15 of the base 10 so that the belt 50 is inserted therethrough. The car seat body comprises a seat body 21 and a backrest 22 connected with the seat body, wherein the backrest 22 is installed towards the rear end 14 of the base 10, namely the front installation of the car safety seat, and the reverse installation is the rear installation. The car safety seat of the present embodiment is suitable for both forward and rearward mounting. When a child of a younger age sits on the front-mounted car seat body 20, the headrest 30 is adjusted to the second height interval H2, and it is not a necessary condition for normal use whether the base 10 is fastened to the car seat by the safety belt 50.

The car safety seat still includes: the stop block 222 is arranged between the first height interval H1 and the second height interval H2, and is switched between a stop position and a release position, the stop block stops the headrest 30 from rising at the stop position, and the stop block stops the headrest 30 at the release position; a first interference member 132 mounted on the base 10 and capable of being switched between a third position and a fourth position by the interlocking of the seat belt 50; the second interference piece 211 is arranged on the steam seat body 20, is switched between a first position and a second position, and is used for connecting the stop block 222 to be switched between a stop position and a release position which respectively correspond to the first position and the second position; when the steam seat body 20 is installed on the base 10 in the forward direction, the second interference piece 211 corresponds to the first interference piece 132, the first interference piece 132 located at the fourth position limits the second interference piece 211 to be located at the first position, and enables the stop block 222 to be located at the stop position, so that the headrest 30 is prevented from rising from the second height interval H2 to the first height interval H1; the safety belt 50 controls the first interference piece 132 to switch to the third position to release the second interference piece 211 so that the second interference piece 211 is in the second position, and the stop block 222 is switched to the release position to release the stop of the headrest 30, allowing the headrest 30 to rise from the second height interval H2 to the first height interval H1.

In this embodiment, the first interference member 132 is a substantially rectangular block located at the rear end 14 of the base 10, and the first interference member 132 is vertically telescopically mounted on the top surface of the base 10. Specifically, the first interference member 132 can be switched back and forth between the third position and the fourth position by the interlocking action of the seat belt 50. When the first interference member 132 is located at the third position, it can be retracted into the base 10, and when the first interference member 132 is located at the fourth position, it is limited to protrude from the upper cover of the base 10. The seat belt 50 drives the first interference element 132 to switch between the third position and the fourth position through the actuator 40, and the actuator 40 is described in detail below.

Referring to fig. 5, the seat body 21 is provided with a second interference piece 211 and an avoiding groove 212 corresponding to the first interference piece 132, and the second interference piece 211 and the avoiding groove 212 are respectively located at two ends of the seat body 21. The escape slot 212 is used to provide a receiving space for the first interference member 132 to protrude above the base 10 in the fourth position when mounted in the rearward direction. Obviously, the escape groove 212 is not necessarily provided in the seat body 21, and may be formed in a gap between the automobile seat body 20 and the base 10 when the automobile seat body 20 is mounted on the base 10 in the rear direction.

Referring to fig. 4 to 6, in the present embodiment, the second interference element 211 is hinged in the seat body 21 of the car seat body 20 and has a second elastic return element 213, the second elastic return element 213 provides a force for the second interference element to switch from the first position to the second position, the second interference element 211 rotates to move the stop block 222 to the release position in the process of switching from the first position to the second position, and when the first interference element 132 limits the second interference element 211 to make it rotate reversely to move the stop block 222 to the stop position. Specifically, the second interference piece 211 is a flat block, one end of which is hinged to the base 21, the second elastic return piece 213 is a torsion spring and is installed at the hinged end, the other end of the second interference piece 211 is a free end capable of interfering with the first interference piece 132, the free end is a clamping protrusion 214 extending obliquely downward, the top surface of the first interference piece 132 is preferably an inclined surface 134 matched with the clamping protrusion, and when the first interference piece 132 is located at the fourth position, the inclined surface 134 abuts against the clamping protrusion 214 to limit the second interference piece 211 so as to prevent it from rotating; the first interference member 132 retracts downward to unseat the second interference member 211.

The second interference element 211 is connected to the stop block 222 through a linking element 223 to generate linking action, in this embodiment, the linking element 223 is a steel wire. The lower end of the steel wire is fixed on the second interference piece 211 and close to the hinged part thereof, the stop block 222 is substantially strip-shaped, one end of the stop block is a hinged end hinged on the backrest 22 of the steam seat body 20, the other end of the stop block is a free end, the upper end of the steel wire is fixed on the stop block 222 and close to the hinged end thereof, a headrest adjusting structure 221 is arranged between the headrest 30 and the backrest 22 of the steam seat body 20, and the height of the headrest 30 is adjusted on the backrest 22 through the headrest adjusting structure 221. The headrest adjusting structure 221 includes a headrest adjusting part disposed on the headrest 30 and a backrest adjusting part disposed on the upper portion of the backrest 22, wherein the headrest adjusting part adjusts the height of the headrest 30 in a second height interval H2 and a first height interval H1 by sliding on the backrest adjusting part, specifically, the first height interval H1 and the second height interval H2 are disposed on the upper portion of the backrest 22, and the stop block 222 is located between the first height interval H1 and the second height interval H2, the free end of the stop block 222 is in contact with the headrest adjusting part, when the stop block 222 is in the stop position, the stop block 222 limits the headrest adjusting part so that the headrest cannot be adjusted upward, and when the stop block 222 is in the release position, the headrest 30 is adjusted upward, the stop block 222 rotates under the condition that the limit is removed, the free end of the headrest adjusting part no longer stops the headrest 30, when the headrest 30 is located in the first height interval H1, the headrest adjustment member is also held in the release position against the stop block 222. The second interference piece 211 has a first position and a second position, and when the second interference piece 211 is located at the first position, the second interference piece 211 is linked with the stop block 222 to move to the stop position; when the second interference piece 211 is switched to the second position, the interlocking stopper 222 moves to the release position.

The headrest adjusting structure 221 has the following specific structure: the backrest adjusting part is of a frame structure, a plurality of rows of latch 224 are arranged on the back of the frame structure along the height direction, a hollowed-out part is arranged on the frame structure, the headrest adjusting part is an adjusting slide block, the adjusting slide block is fixed on the back of the headrest through a connecting rod penetrating through the hollowed-out part, a groove 225 is formed in the adjusting slide block, and the adjusting slide block is clamped on the latch 224 of different rows through the groove 225 to realize height adjustment of the headrest 30.

Referring to fig. 9 and 13, when the headrest 30 is located in the first height interval H1 to mount the steam seat body 20 on the base 10 in a forward direction, the headrest 30 abuts against the stop block 222 to move to the release position (fig. 9), and accordingly, the second interference member 211 is kept at the second position (fig. 13) by the pulling of the linkage member 223. And the first interference member 132 remains in the fourth position because the seat belt 50 is not installed on the base 10. The second interference member 211 in the second position is aligned with and forms a mutual pushing with the first interference member 132 in the fourth position, and the car seat body cannot be mounted on the base frame 10 due to the pushing of the two. At this time, if the seat belt 50 is tied up on the base 10, the seat belt 50 drives the first interference member 132 to switch from the fourth position to the third position through the driving mechanism 40, and the seat body can be smoothly installed on the base 10 in the forward direction without being kept above the upper cover and pushed against the second interference member 211 in the second position.

Referring to fig. 6 to 9, when the headrest 30 is located in the second height interval H2 and the seat body has been successfully mounted on the base 10 in the forward direction, the second interference element 211 is aligned with the first interference element 132 (fig. 6). If the base 10 is not tied by the safety belt 50, the first interference member 132 is located at the fourth position and protrudes above the upper cover of the base 10, keeps the second interference member 211 at the first position, and locks the stop block 222 at the stop position (fig. 7), thereby blocking the headrest 30 from being adjusted upward. The parent finds that the headrest 30 cannot be adjusted upward, knows that the safety belt 50 is not bound, and then fixes the base 10 with the safety belt 50. The safety belt 50 is driven by the driving mechanism 40, allowing the first interference element 132 to switch from the fourth position to the third position, retracting under the upper cover (fig. 8), no longer holding the second interference element 211 in the first position, the second interference element 211 being no longer locked to switch to the second position, pulling the linkage 223 to switch the stop block 222 to the release position (fig. 9), unblocking the headrest 30, allowing it to adjust upward.

Referring to fig. 10, the base 10 has a mounting cavity, and a driving mechanism 40 is disposed in the mounting cavity, the driving mechanism 40 includes an operating portion 41, a link structure 42, a supporting body 43, a driving body 44 having a third elastic restoring element 49, a supporting block 45, a supporting block 46, and a mounting frame 47. The mounting frame 47 is groove-shaped and is longitudinally arranged in the mounting cavity, the abutting body 43 is a block-shaped body, the abutting body 43 is longitudinally slidably mounted on the front portion of the mounting frame 47, a vertical clamping groove 432 is formed in a wall surface 431 of the abutting body 43 opposite to the driving body 44, and a blocking edge 433 for preventing the safety belt 50 from being separated is arranged at the top of the wall surface. A plate-shaped operating portion 41 is hinged to a side wall of the mounting bracket 47, the operating portion 41 is connected to the abutting body 43 through a link structure 42, the operating portion 41 is turned up, the abutting body 43 is driven by the link structure 42 to displace, so that a gap is formed between the abutting body 43 and the driving body 44, the safety belt 50 is inserted into the gap, and the abutting body 43 is moved in the opposite direction through the closing operation portion 41 and is pressed down by the operating portion to be positioned, so that the safety belt 50 is bent and pressed into a slot 432 of the abutting body 45 by the restoring force of the third restoring elastic member 49 under the driving body 44 (in order to reduce the drawing difficulty of the drawing, the state that the safety belt 50 is bent by the slot 432 is not shown in fig. 10). When the base 10 is bound by the safety belt 50, the operating portion 41 can hold the safety belt 50 in the strap structure 40 to prevent the escape.

When the webbing 50 is inserted into the webbing slot 16, the webbing 50 closely contacts the wall surface 431, and the webbing 50 covering the catching groove 432 and the abutting body 43 push the driving body 44 to operate; on the other hand, when the seat belt 50 is not inserted, the urging body 44 cannot be pushed by the abutting body 43 due to the presence of the engaging groove 432. The driving body 44 is a vertically arranged long member in the form of a sheet, and is slidably mounted on the mounting frame 47, the front end of the driving body 44 has a vertical section, the vertical section has two opposite sides, one of the two sides is opposite to the engaging groove 432, so that the vertical safety belt 50 is bent and pressed in the engaging groove 432 by the side, the other side is connected to one end of the third restoring elastic member 49, and the other end is fixed.

The abutting block 45 is located at the rear end of the driving body 44, is connected with the driving body 44 into a whole and can move along with the driving body 44, the abutting block 45 is located below the first interference piece 132, and the abutment block 45 has a convex portion 451 and a concave portion 452 disposed adjacently, the abutment block 45 has a fifth position and a sixth position, when the driving body 44 is at the original position (the driving body 44 is not pushed by the safety belt 50), it is at the fifth position, and the protrusion 451 is opposite to the first interference element 132 up and down to contact the first interference element 132 to limit it at the fourth position (fig. 11), when the driving body 44 is displaced (the driving body 44 is pushed by the safety belt 50), the abutting block 45 is driven to slide to the sixth position, and the concave portion 452 is opposite to the first interference member 132 up and down to release the position limitation of the first interference member 132 (the convex portion 451 is separated from the first interference member 132) so as to be retracted downwards (the concave portion 452 provides a space for the first interference member 132 to switch to the third position) (fig. 12). The first resilient return element 133 is compressed when the second interference element 211 rotates to press the first interference element 132 during the process of switching from the first position to the second position, so that the first interference element 132 retracts, and the recess 452 provides a required accommodating space for the first interference element 132.

On the bottom plate of mounting bracket 47 and be close to support body 43 and open there is the elongated hole, it mainly comprises front end vertical section, interlude and rear end vertical section to drive body 44, the interlude passes the elongated hole upwards again and becomes its rear end vertical section along the lower surface longitudinal extension of mounting bracket 47 bottom plate and slant, the rear that just is located the driving body on mounting bracket 47 is provided with supporting shoe 46, the butt piece 45 passes through supporting shoe 46 and installs on mounting bracket 47, supporting shoe 46 plays the effect of bed hedgehopping assembly. The abutting block 45 is a horizontally arranged frame body, the abutting block 45 is installed on the top surface of the supporting block 46 and can move longitudinally, the hollow part of the abutting block 45 is a concave part 452, the convex part 451 is arranged on the frame body edge at the front end of the abutting block, the first interference part 132 is connected to the top surface of the supporting block 46 through the first reset elastic part 133 positioned in the concave part 452, the first reset elastic part 133 extends vertically to enable the first interference part 132 to extend out and provide acting force for the first interference part 132 to be switched from retracting into the base 10 to protruding out of the top surface of the base 10, so that under the condition that the safety belt 50 is removed, the convex part 451 of the abutting block 45 can be abutted against the bottom end of the first interference part 132 again, and the top end of the vertical section at the rear end of the driving body 44 is connected with the front end of the abutting block 45. The abutting block 45 and the driving body 44 may be integrally formed or combined into a whole, and the third return elastic member 49 provides the abutting block 45 with an acting force for automatically switching from the sixth position to the fifth position through the driving body 44.

It is understood that the abutment block 45 may not be provided with the recess 452, but the entire abutment block 45 may be designed in a trapezoidal or triangular shape, the upper portion of which interferes with the first interference member 132 to be locked in the fourth position. When the abutment block 45 is carried by the safety belt 50 so that the oblique side thereof is aligned with the first interference member 132, the first interference member 132 is guided by the oblique side to release the interference and can be switched to the third position.

In addition, the driving mechanism 40 is not limited to the above structure, for example, the driving mechanism 40 can directly drive the first interference element 132 to switch from the fourth position to the third position.

Further, in order to more intuitively observe the binding state of the safety belt 50, the actuator 40 further includes a display. Through the display piece, the parent can know whether the seat belt 50 is bound to the base 10 and whether the seat belt 50 is bound tightly according to the display content. The display device has a first display portion 481 and a second display portion 482, which respectively display different content information and can be switched to display by the driving of the seat belt 50. The first display portion 481 is a hollow block-shaped body arranged on the rear portion of the supporting block 46 and located behind the abutting block 45, a through opening is formed in the top surface of the first display portion 481, the rear end of the abutting block 45 penetrates into the first display portion 481, the second display portion 482 is located in the through opening of the first display portion 481, and the second display portion 482 is hinged to the first display portion 481 and is linked with the abutting block 45 to enable the second display portion to rotate along with the movement of the abutting block 45, so that the display part can switch display under the driving of the abutting block 45. In order to facilitate the observation of the display information of the display member, a display window 483 is provided at a position corresponding to the upper cover of the base 10. The first display portion 481 and the second display portion 482 may be switched to each other in a sliding manner. The first display section 481 may be omitted as it is, and information of different contents may be provided on the second display section 482 in its entirety, and different information contents may be displayed in different positions of the display window 483 by switching.

Referring to fig. 11 and 12, it can be understood that when the car seat body is installed in the forward direction, the seat belt 50, the driving body 44, the abutting block 45, the first interference member 132, the second interference member 211 and the stopping block 222 will generate the following linkage and position relationship:

①, the safety belt 50 does not penetrate into the safety belt groove 16, the driving body 44 is not pushed, the abutting block 45 keeps at the fifth position to abut against the first interference piece 132, the first interference piece 132 keeps at the fourth position to abut against the second interference piece 211, the second interference piece 211 keeps at the first position to strain the interlocking piece 223, and the stopping block 222 is locked at the stopping position to block the headrest 30 to be adjusted;

②, the safety belt 50 penetrates into the safety belt groove 16, the driving body 44 is pushed, the abutting block 45 slides to the sixth position to release the interference on the first interference piece 132, the first interference piece 132 is switched to the third position to release the interference on the second interference piece 211, the second interference piece 211 is switched to the second position to release the interlocking piece 223, and the stopping block 222 enters the releasing position to not block the headrest 30 from being adjusted upwards.

From above, according to the height of the headrest 30 and whether the car seat body is installed forward or backward, there are the following 4 use states:

i. the steam seat body is installed backwards, and the headrest 30 is positioned at any position. Referring to fig. 14, at this time, the first interference member 132 is not aligned with the second interference member 211 but is accommodated in the escape slot 212, so that the base 10 can be normally used without binding the safety belt 50;

the seat body is mounted forward with the headrest 30 in the second height interval H2. For the child in this use situation, since the headrest 30 does not need to be raised toward the first height interval H1, the stopper 222 is located at the stopping position, and accordingly, the second interference piece 211 is located at the first position and is interfered by the first interference piece 132 located at the fourth position to be locked, the base 10 can be normally used without tying the safety belt 50;

the seat body is mounted forward in advance, with the headrest 30 located in the first height interval H1. Because the headrest 30 is at the first height interval H1, the stop block 222 is abutted against the release position, the linkage 223 is pulled to lock the second interference piece 211 at the second position, so that the second interference piece 211 and the first interference piece 132 are pushed against each other, and the car seat body cannot be mounted on the base 10 in the forward direction. The seat belt 50 is now strapped to the base 10 and the seat belt 50 unlocks the first interference member 132 in the fourth position so that it can be switched to the third position retracted within the base 10. The second interference piece 211 and the first interference piece 132 are not pushed against each other any more, and the automobile seat body can be smoothly and forwardly mounted on the base 10;

the steam seat body is installed forward, the headrest 30 is raised to the first height interval H1 in advance. Referring to ii, to raise the headrest 30 to the first height interval H1, the locking of the stopper 222 at the stop position must be released. The seat belt 50 is now strapped to the base 10 and the seat belt 50 unlocks the first interference member 132 locked in the fourth position so that it can be switched to the third position retracted within the base 10. The second interference element 211 is no longer held by the first interference element 132, and the second elastic reset element 213 switches from the first position to the second position. Accordingly, the stop block 222 can be switched to the release position, no longer blocking the headrest 30 from rising to the first height interval H1.

Example 2

As shown in fig. 15 to 25, the present embodiment is different from embodiment 1 in that: the interference piece and the structure of the driving mechanism are used for reminding parents of using the safety belt to fix the automobile safety seat.

Referring to fig. 15, 16 and 19, the seat body includes a body 8, a body case 23 and an angle adjusting seat 16’The body 8 is arranged on the body shell 23 and passes through the angle adjusting seat 16’Is arranged on the base. The base is formed by combining a base upper cover 12 and a base lower cover 1 into a whole in a screw connection mode and the like. The upper cover 12 of the base is concave, and the front and the rear parts of the upper cover are respectively provided with an angle adjusting seat 16’The mounting structure 101 of (1). The base upper cover 12 has a first side hole 12e, a recess 12f and a second side hole 12g, and when the vehicle-mounted seat belt 22 is used, the vehicle-mounted seat belt 22 passes through the first side hole 12e, the recess 12f and the second side hole 12g of the base upper cover 12.

The second interference piece is installed on the angle adjustment seat 16’The first interference piece limits the second interference piece, so that the second interference piece cannot move and is located at the first position.

In the present embodiment, please refer to fig. 15 and 22 to 24, the second interference member is a stopper 9, the stopper is a linked rotation member 6, and the first interference member is a columnar mode switching button 10'. Angle adjusting seat 16’Has a receiving cavity 16a, and a through hole 16b is provided on the bottom surface of the receiving cavity 16 a. The limiting block 9 is a flat block body with a jack 9a, the limiting block 9 and a fourth reset elastic part are arranged in the accommodating cavity 16a together, and the fourth reset elastic part adopts a compression spring 15’。

The specific installation is as follows: the rear end of the limiting block 9 is provided with a cylinder 9b and a compression spring 15’One end is installed on cylinder 9b, and the other end is installed on the back wall 16c who holds chamber 16a, and stopper 9 links to each other with interlock rotating member 6 through the interlock. The linkage piece is a linkage steel rope 5, and the linkage steel rope 5 passes through a compression spring 15’The steel rope head 5a is arranged in a first round hole 9c on the limiting block 9, and the other end of the steel rope head 5a penetrates through the angle adjusting seat 16’The square hole 16d on the rear end surface is connected to the second round hole 6b on the interlocking rotary member 6. One end of the linkage rotating piece 6 is provided with a clamping shaft 6c, the end is hinged in the first clamping hole 23a of the body shell 23 through a clamping shaft 6c, and the other end of the linkage rotating piece 6 is a free end. The headrest adjusting part 7 is positioned on the headrest, the headrest adjusting part 7 is fixed on the headrest assembly 18, and the headrest adjusting part 7 is driven to move up and down through a headrest up-down adjusting structure between the headrest adjusting part and the backrest of the body 8.

The headrest adjusting structure of the present embodiment is substantially the same as that of embodiment 1 in structure, and both the height adjustment of the headrest at the first height interval H1 and the first height interval H2 can be realized.

Referring to fig. 24, when the linkage rotating member 6 is at the stop position, the step surface 7a of the headrest adjusting member 7 contacts with the limiting surface 6a (free end) of the linkage rotating member 6, and the linkage rotating member 6 limits the headrest adjusting member 7 located in the second height interval H2 to move upward continuously. When the linkage rotating piece 6 is at the releasing position, the headrest adjusting piece 7 moves upwards to drive the linkage rotating piece 6 to rotate, and the linkage steel rope 5 is synchronously pulled upwards. The limiting block 9 can move to the second position in the accommodating cavity 16a to make the insertion hole 9a and the through hole 16b staggered to close the through hole, at this time, the interlocking rotating member 6 is in the release position, or the limiting block 9 returns to the first position under the action of the compression spring 15' to make the insertion hole 9a and the through hole 16b correspond to open the through hole.

Referring to fig. 20 and 21, the mode switch button 10 ' is vertically and telescopically mounted on the base, and when the mode switch button 10 ' is located at the fourth position, the mode switch button 10 ' upwardly passes through the through hole 16b and extends into the insertion hole 9a of the stopper 9 to limit the same, so that the stopper 9 is located at the first position, and at this time, the interlocking rotating member 6 is located at the stopping position. When the mode switching button 10 'is at the third position, the mode switching button 10' retracts downwards to withdraw from the insertion hole 9a and the through hole 16b, so as to withdraw the limit of the limit block 9, and the limit block 9 is at the second position, at this time, the linkage rotating member 6 is at the releasing position.

Referring to fig. 15 to 21 and 24, an installation cavity is provided between the upper base cover 12 and the lower base cover 1, a driving mechanism is provided in the installation cavity, and the vehicle-mounted safety belt 22 is linked with the driving mechanism, and drives the mode switching button 10' to extend and retract up and down through the driving mechanism. In this embodiment, the driving mechanism mainly comprises a support frame 2 with a fifth elastic restoring element, a safety belt detecting element 3 and a positioning element 17. The support frame 2 is provided with a U-shaped groove 2a extending in the front-rear direction, and a set screw 13' is inserted into the U-shaped groove 2a and fixed to the base lower cover 1 to guide the movement of the support frame 2 on the base lower cover 1 in the front-rear direction. The set screws 13' and the matched U-shaped grooves 2a can be preferably two sets, which are respectively arranged at the front end and the rear end of the support frame 2. The fifth elastic reset piece adopts a return spring 11, the front end of the support frame 2 is provided with a return spring mounting post 2b, one end of the return spring 11 is mounted on the return spring mounting post 2b, the other end of the return spring is fixed on a return spring baffle 1c arranged on the base lower cover 1, and the support frame 2 can be reset under the action of the return spring 11.

The mode switching button 10' is movably mounted on the supporting frame 2 and can be driven by the supporting frame 2 to extend upward out of the top surface of the upper cover 12 of the base, or retract downward below the top surface of the upper cover 12 of the base when the supporting frame 2 is restored, and the specific structure is as follows: the supporting frame 2 is provided with a chute 2d positioned on a vertical plane, the positioning piece 17 is in an inverted U shape and spans the supporting frame 2, and the positioning piece 17 passes through a fourth round hole 17b on the positioning piece 17 through a fixing screw 19 and extends into the positioning piece mounting column 1a to be fixed on the base lower cover 1; an opening 17a is formed on the top surface of the positioning member 17, the mode switching button 10 'is inserted into the opening 17a of the positioning member 17, and the support rod 20 is supported in the inclined slot 2d after passing through the third circular hole 10a at the bottom thereof and can slide along the inclined slot 2d to enable the mode switching button 10' to rise and extend or descend for retraction. When the vehicle-mounted safety belt 22 is not used for fixing the base, the support frame 2 is located at the original position, and the positioning piece 17 limits the mode switching button 10 'to move only up and down in the vertical direction, so that the mode switching button 10' moves upwards along the inclined groove 2d and extends out of the upper base cover 12, passes through the through hole 16b of the angle adjusting seat 16 and the insertion hole 9a of the limiting block 9, and clamps the limiting block 9; at this time, the limit block 9 limits the linkage rotating piece 6 at the stop position through the linkage steel rope 5, and the headrest assembly 18 can not adjust the height upwards any more.

The safety belt detecting piece 3 is arranged behind the support frame 2, the safety belt detecting piece 3 is provided with a clamping hole column 3b, and the clamping hole column 3b is arranged in a second clamping hole 12a on the base upper cover 12 to realize that the safety belt detecting piece 3 is hinged in the base. The top surface of the base is provided with a groove 12f, and in the home position state, the top surface 3c of the safety belt detection member 3 is exposed in the groove 12 f. When the vehicle-mounted seat belt 22 passes through the base and presses down on the top surface 3c of the seat belt detecting member 3, the seat belt detecting member rotates to push the support frame 2 to move forward; after the vehicle-mounted seat belt 22 is removed, the seat belt detector 3 is returned to the original position by being pushed by the support frame 2 moving backward in the process of returning to the original position.

A seat belt pressing mechanism for pressing down the seat belt to rotate the seat belt detecting member 3 is further provided on the base upper cover 12, and the seat belt pressing mechanism is installed in the groove 12 f. The safety belt pressing mechanism comprises a safety belt pressing block 4 and a safety belt buckle cover 14 ', wherein the safety belt pressing block 4 and the safety belt buckle cover 14' are oppositely arranged and are respectively hinged on the groove wall of the groove 12 f; wherein, the safety belt fastening block 4 is hinged in a third clamping hole 12c on the base upper cover 12 through the holes 4a at two ends of the reinforcing iron support 21. The reinforcing iron support 21 is a U-shaped rod member and is installed in the belt tightening block 4, so that the strength of the belt tightening block 4 can be enhanced. The bottom surface 4b of the belt packing 4 protrudes downward, and the belt buckle cover 14' is installed in the fourth catching hole 12d of the base upper cover 12 through the catching column 14a to be rotatable. A buckle structure is arranged between the safety belt fastening block 4 and the safety belt buckle cover 14 ', when the safety belt fastening block 4 is buckled with the safety belt buckle cover 14 ', the safety belt buckle cover 14 ' is buckled with the safety belt fastening block 4 for fixing, so that the bottom surface of the safety belt fastening block 4 presses the vehicle-mounted safety belt 22 and the safety belt detecting piece 3 downwards to enable the safety belt detecting piece 3 to rotate.

Still be equipped with baffle 1d and return spring baffle 1c along horizontal setting on base lower cover 1, return spring baffle 1c is located the place ahead of baffle 1d, and support frame 2 can move between return spring baffle 1c and baffle 1 d. The front end of the belt detector 3 is located in front of the flap 1d, so that the flap 1d restricts the rotation angle of the belt detector 3.

Referring to fig. 18, 19 and 21, when the vehicle-mounted seat belt 22 is used, the vehicle-mounted seat belt 22 passes through the first side hole 12e, the groove 12f and the second side hole 12g of the upper cover 12 of the base, and covers the seat belt packing 4 and the seat belt buckle cover 14'; at this time, the vehicle-mounted seat belt 22 is located between the bottom surface 4b of the seat belt tightening block 4 and the top surface 3c of the seat belt detecting member 3, the seat belt detecting member 3 rotates around the clamping hole 12a, the front end surface 3a of the seat belt detecting member contacts with the rear end surface 2c of the support frame 2 to push the support frame 2 to move forward, and the mode switching button 10 'moves vertically downward along the inclined groove 2d under the limitation of the positioning member 17, so that the top surface 10b of the mode switching button 10' moves downward along the square hole 12b on the base upper cover 12. At this time, the mode switching button 10' does not extend into the insertion hole 9a of the stopper 9, the interlocking rotating member 6 is in the release position, the headrest assembly 18 is not limited, and the interlocking rotating member 6 can rotate along with the rising of the headrest assembly 18, so that the headrest can be adjusted to the first height interval H1.

Referring to fig. 18, 19 and 20, when the seatbelt 22 is not used, the top surface 10b of the mode switching knob 10' protrudes out of the square hole 12b by the return spring 11. At this time, if the height of the headrest is in the second height interval H2, the stopper 9 returns to the original position under the action of the compression spring 15 'so that the insertion hole 9a corresponds to the through hole 16b to open the through hole 16b, the top surface 10b of the mode switching button 10' passes through the through hole 16b of the angle adjustment seat 16 and then passes through the insertion groove 9a to block the stopper 9, and the headrest cannot be adjusted up to the first height interval H1.

If the headrest height is in the first height interval H1, the insertion hole 9a is offset from the through hole 16b to close the through hole 9 a. In the case where the vehicle-mounted seat belt is not installed, since the mode switching knob 10 'protrudes from the base upper cover 12, the top surface 10b of the mode switching knob 10' cannot penetrate into the insertion hole 9a, but is pushed against the body 8, so that the body 8 is not fitted into the base. After the headrest height is adjusted to the second height interval H2, the insertion hole 9a of the limiting block 9 is relatively communicated with the through hole 16b, the top surface 10b of the mode switching button 10' can pass through the insertion hole 9a, and the body 8 can be installed on the base. Or use on-vehicle safety belt 22 to tie up and tie up on the base, mode switch button 10 'downstream does not have protruding base upper cover 12, and body 8 can be installed on the base to reach the mesh that needs to use on-vehicle safety belt 22 of warning older children, guarantee this age group children's safety.

In other embodiments, the interlocking rotating member 6 may be omitted, and one end of the interlocking steel wire 5 is fixed to the headrest assembly 18, so that the headrest assembly 18 can be lifted.

The vehicle-mounted seat belt 22, the seat belt detecting member 3, the supporting frame 2, the limiting block 9, the mode switching button 10' and the rotating connecting member 6 of the present embodiment generate the following linkage and position relationship:

firstly, the vehicle-mounted safety belt 22 is not installed, the safety belt detecting piece 3 is not pressed, the support frame 2 is not pushed by the safety belt detecting piece 3 and is positioned in a fourth position, the mode switching button 10' penetrates into the jack of the limiting block 9, so that the limiting block 9 is positioned in a first position, the limiting block 9 is kept in the first position, the steel rope is tensioned, and the rotary connecting piece 6 is locked in a stopping position to prevent the headrest from being adjusted upwards;

and secondly, the vehicle-mounted safety belt 22 is installed, the safety belt detecting piece 3 is pressed, the support frame 2 is pushed to move, the mode switching button 10' is driven to be switched to the third position and withdrawn from the jack of the limiting block 9, the limiting block 9 is switched to the second position, at the moment, the rotary connecting piece 6 enters the releasing position, and the rotary connecting piece 6 does not block the headrest from being adjusted upwards.

From above, according to the height of the headrest, there are the following 3 use states:

i. the headrest height is in the second height interval H2, if the vehicle-mounted safety belt 22 is not used, the mode switching button 10 'is located at the fourth position, the mode switching button 10' blocks the limiting block 9, and the headrest cannot be adjusted to the first height interval H1 any more.

if the headrest height is in the first height interval H2, the mode switching button 10 'is located at the fourth position and the stop block 9 is located at the second position under the condition that the seatbelt is not installed, and the mode switching button 10' cannot clamp the stop block 9 to abut against the body 8, so that the body 8 cannot be mounted on the base. Need with the headrest altitude mixture control to be fit for 0 ~ 3 year child's high back, mode switch button 10' just can block stopper 9, and body 8 just can install on the base.

if the headrest height is in the first height interval H2, the mode switching button 10 'is located at the fourth position and the limit block 9 is located at the second position under the condition that the vehicle-mounted safety belt is not installed, and the mode switching button 10' cannot clamp the limit block 9 to abut against the body 8, so that the body 8 cannot be installed on the base. At this time, the body 8 may be mounted on the base, using the vehicle-mounted seat belt 22 bound to the base, and the mode switching button 10' moved downward to be located at the third position.

Claims

1. The utility model provides an automobile safety seat, includes fixed base, vapour seat body of accessible safety belt and headrest, vapour seat body mainly comprises pedestal and back, vapour seat body can install on the base forward or backward through the pedestal, the headrest is installed on vapour seat body's back and can be in first height interval and the interval adjustment of second height in order to adjust its height, first height interval is higher than the interval of second height, its characterized in that, automobile safety seat still includes:

when the steam seat body is arranged on the base in the forward direction, the second interference piece corresponds to the first interference piece, the first interference piece located at the fourth position limits the second interference piece to enable the second interference piece to be located at the first position, the stop block is located at the stop position, and the headrest is prevented from rising to the first height section from the second height section; the safety belt controls the first interference piece to be switched to a third position, the second interference piece is relieved from being limited, the second interference piece is located at the second position, the stop block is switched to a release position, the stop of the headrest is relieved, and the headrest is allowed to rise from the second height interval to the first height interval;

the first interference piece is telescopically arranged, and is in a fourth position when the first interference piece extends out and is in a third position when the first interference piece retracts; the second interference piece is hinged in the seat body of the automobile seat body and provided with a second reset elastic piece, the second reset elastic piece provides acting force for the second interference piece to switch from the first position to the second position, the second interference piece rotates in the process of switching from the first position to the second position to enable the stop block to be in the release position, and when the first interference piece limits the second interference piece to enable the second interference piece to rotate reversely to enable the stop block to be in the stop position.

2. The car safety seat according to claim 1, wherein: the first interference piece is vertically installed on the top surface of the base, and the first interference piece extends upwards to abut against the second interference piece to limit the second interference piece or retracts downwards to withdraw the limit of the second interference piece.

3. The car safety seat according to claim 2, wherein: the first interference piece is provided with a first reset elastic piece, the first reset elastic piece extends in the vertical direction to enable the first interference piece to extend out to provide acting force for the first interference piece to switch from the third position to the fourth position, or the first reset elastic piece is compressed when the second interference piece rotates in the process of switching from the first position to the second position and presses down the first interference piece to enable the first interference piece to retract.

4. The car safety seat according to claim 2, wherein: the base is provided with a mounting cavity, a butting block with a third reset elastic piece is arranged in the mounting cavity, the butting block can be switched between a fifth position and a sixth position, when the butting block is at the fifth position, the butting block is in interference fit with the first interference piece to keep the first interference piece at the fourth position, when the butting block is at the sixth position, the butting block is separated from the first interference piece to allow the first interference piece to be switched to the third position, the safety belt is connected with the butting block to be switched from the fifth position to the sixth position, and the third reset elastic piece provides acting force for the butting block to be automatically switched from the sixth position to the fifth position.

5. The car safety seat according to claim 4, wherein: the butting block is linked with the safety belt through a driving mechanism arranged in the installation cavity, the driving mechanism mainly comprises a butting body and a driving body, the driving body is a long component which is arranged along the longitudinal direction and can move, the front end of the driving body is opposite to the butting body so as to clamp the safety belt between the butting body and the driving body to generate displacement, the butting block is positioned at the rear end of the driving body, is connected with the driving body into a whole and can move along with the driving body so as to return to the original position under the action of a third reset elastic piece after the safety belt is removed, the butting block is positioned right below the first interference piece and is provided with a convex part and a concave part which are arranged adjacently, when the driving body is positioned at the original position, the convex part is vertically opposite to the first interference piece so as to butt against the first interference piece to limit the first interference piece at a fourth position, and when the driving body generates displacement, the butting block moves along with the driving body so as to vertically opposite to enable the concave part to be vertically opposite to the first interference piece so as to limit the first interference piece, so that the first interference piece is pressed downwards to retract when the second interference piece rotates, and the concave part provides a required accommodating space for the first interference piece.

6. The car safety seat according to claim 5, wherein: the supporting body is a block-shaped body, a vertical clamping groove is formed in the wall surface of the supporting body opposite to the driving body, the driving body is a vertically arranged sheet-shaped body, a vertical section is arranged at the front end of the driving body, the vertical section is provided with two opposite side edges, one side edge of the vertical section is opposite to the clamping groove, so that the vertical safety belt is bent and pressed in the clamping groove by the side edge, the other side edge of the vertical section is connected with one end of the third resetting elastic piece, and the other end of the third resetting elastic piece is fixed.

7. The car safety seat according to claim 6, wherein: and a flange for preventing the safety belt from being separated is arranged at the top of the wall surface of the abutting body opposite to the driving body.

8. The car safety seat according to claim 7, wherein: a groove-shaped mounting rack arranged along the longitudinal direction is also arranged in the mounting cavity, the abutting body is arranged on the front part of the mounting rack, a long hole is arranged on the bottom plate of the mounting rack and close to the abutting body, the belt moving body mainly comprises a front end vertical section, a middle section and a rear end vertical section, the middle section extends longitudinally along the lower surface of the mounting rack bottom plate, obliquely upwards passes through the elongated hole and upwards to form the rear end vertical section, a supporting block is arranged on the mounting rack and behind the driving body, the abutting block is a frame body which is horizontally arranged, the butt joint block is arranged on the top surface of the supporting block and can move along the longitudinal direction, the hollow part of the butt joint block is a concave part, the convex part is arranged on the frame body edge at the front end of the convex part, the first interference part is connected to the top surface of the supporting block through a first reset elastic part positioned in the concave part, and the rear end vertical section of the driving body is connected with the front end of the abutting block.

9. The car safety seat according to claim 8, wherein: the supporting body can slide along the longitudinal direction, a plate-shaped operating part is hinged to the side wall of the mounting frame, the operating part is connected with the supporting body through a connecting rod structure, the operating part is turned upwards, the supporting body is driven by the connecting rod structure to move, so that a gap for a safety belt to pass through is formed between the supporting body and the driving body, and the supporting body moves towards the opposite direction and is pressed downwards by the operating part through the lower closing operating part to be positioned, so that the safety belt is bent and pressed in a clamping groove of the supporting body under the action of the third resetting elastic piece on the driving body.

10. The car safety seat according to claim 9, wherein: the driving mechanism further comprises a display part, the display part is provided with a first display part and a second display part, the first display part is a hollow block-shaped body and is located behind the abutting block, the top surface of the first display part is provided with a through opening, the rear end of the abutting block penetrates into the first display part, the second display part is located in the through opening of the first display part, the second display part is hinged to the first display part and can move along with the abutting block to rotate in a linkage mode, the top surface of the base is provided with a display window, and the display window corresponds to the display part so that the binding state of the safety belt can be observed.

11. The car safety seat according to claim 10, wherein: the driving mechanism further comprises a display piece and a display window arranged on the top surface of the base, the display window corresponds to the display piece, and under the driving of the safety belt, the display piece is observed through the display window to switch different display contents.

12. The car safety seat according to claim 11, wherein: an avoiding groove is formed between the seat body of the automobile seat body and the base, so that when the automobile seat body is arranged on the base in the rear direction, a required accommodating space is provided for the first interference piece to be positioned at the fourth position and protrude out of the top surface of the base.

13. The car safety seat according to claim 1, wherein: the second interference piece is arranged in a seat body of the automobile seat body and is provided with a fourth reset elastic piece, the fourth reset elastic piece provides acting force for switching the second interference piece from the second position to the first position, the second interference piece can be driven by the stop block at the release position to move so as to be positioned at the second position, and the first interference piece limits the second interference piece so as to enable the second interference piece not to move so as to enable the second interference piece to be positioned at the first position.

14. The car safety seat according to claim 13, wherein: the bottom of the seat body of the steam seat body is provided with an accommodating cavity, the bottom surface of the accommodating cavity is provided with a through hole, the second interference piece is a flat block body with a jack, the second interference piece is arranged in the accommodating cavity and can move in the accommodating cavity to enable the jack and the through hole to be staggered so as to seal the through hole and enable the second interference piece to be located at the second position, or the second interference piece returns to the original position under the action of a fourth reset elastic piece so as to enable the jack and the through hole to correspond to each other and open the through hole and enable the through hole to be located at the first position, the first interference piece is vertically arranged on the top surface of the seat, when the first interference piece is located at the fourth position, the first interference piece upwards penetrates through the through hole and extends into the jack of the second interference piece to limit the jack, and when the first interference piece is located at the third position, the first interference piece retracts downwards to withdraw from.

15. The car safety seat according to claim 14, wherein: the base is provided with an installation cavity, a driving mechanism is arranged in the installation cavity, the driving mechanism mainly comprises a support frame with a fifth reset elastic piece and a safety belt detecting piece, the support frame is longitudinally slidably installed in the installation cavity and can restore to the original position under the action of the fifth reset elastic piece, and the first interference piece is movably installed on the support frame and can be driven by the support frame to extend upwards or retract downwards when the first interference piece restores to the original position; the safety belt detection piece is hinged in the base and located behind the supporting frame, in a home position state, the top surface of the safety belt detection piece is exposed out of the base, when the safety belt penetrates through the base and is pressed down on the top surface of the safety belt detection piece to enable the safety belt detection piece to rotate so as to push the supporting frame to move, or after the safety belt is removed, the safety belt detection piece is pushed by the supporting frame in the process of returning to the home position and returns to the home position.

16. The automotive safety seat according to claim 15, characterized in that: the support frame is provided with a chute positioned on a vertical plane, an inverted U-shaped positioning piece is fixed on the support frame in a crossing mode, an opening is formed in the top surface of the positioning piece, the first interference piece is a columnar body and penetrates through the opening of the positioning piece downwards, the support rod on the positioning piece is supported in the chute and can slide along the chute to enable the first interference piece to ascend, extend out or descend and retract, when the support frame is pushed by the safety belt detection piece to be displaced, the first interference piece moves downwards along the chute and retracts to enable the first interference piece to be located at a third position, and when the support frame returns to the original position, the first interference piece moves upwards along the chute and extends out to enable the first interference piece to be located at a fourth position.

17. The automotive safety seat according to claim 16, characterized in that: the base is also provided with a safety belt pressing mechanism for pressing the safety belt downwards to press the safety belt detection piece to rotate.

18. The car safety seat according to claim 17, wherein: the safety belt compression mechanism comprises a safety belt compression block and a safety belt buckle cover, a groove is formed in the top surface of the base, the top surface of the safety belt detection piece is located in the groove, the safety belt compression block and the safety belt buckle cover are oppositely arranged and hinged to the groove wall of the groove respectively, the bottom surface of the safety belt compression block protrudes downwards, a buckle structure is arranged between the safety belt compression block and the safety belt buckle cover, and when the safety belt buckle cover buckles the safety belt compression block, the bottom surface of the safety belt compression block presses the vehicle-mounted safety belt and the safety belt detection piece down to enable the safety belt detection piece to rotate.

19. The car safety seat according to claim 18, wherein: the bottom of the seat body of the steam seat body is an independently arranged angle adjusting seat, the seat body of the steam seat body is connected with the base through the angle adjusting seat, namely, the accommodating cavity provided with the second interference piece is positioned in the angle adjusting seat.

20. The car safety seat according to claim 1 or claim, wherein: the second interference piece is connected with the stop block through a linkage piece to generate linkage.

21. The automotive safety seat according to claim 20, characterized in that: the utility model discloses a high back of vapour seat body, including back adjustment part, backstop piece, back adjustment part, backstop piece are including setting up the head rest adjustment part on the head rest and setting up the back adjustment part on back upper portion, the head rest adjustment part is through the high regulation that the head leaned on second height interval and first height interval of sliding realization on back adjustment part, the free end of backstop piece contacts with head rest adjustment part, and when the backstop piece was in the backstop position, the spacing head rest adjustment part of backstop piece made the head rest can not upwards be transferred to first height interval, and when the backstop piece was in the release position, upwards adjusted the head rest, and the rotation takes place under the spacing condition of withdrawal to the backstop piece, and its free end no longer rests the head.