CN110466400B - Child safety seat and chair back pitching angle adjusting mechanism - Google Patents
Child safety seat and chair back pitching angle adjusting mechanism Download PDFInfo
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- CN110466400B CN110466400B CN201910894384.9A CN201910894384A CN110466400B CN 110466400 B CN110466400 B CN 110466400B CN 201910894384 A CN201910894384 A CN 201910894384A CN 110466400 B CN110466400 B CN 110466400B
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- child safety
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- 230000007246 mechanism Effects 0.000 title claims abstract description 24
- 230000008878 coupling Effects 0.000 claims description 26
- 238000010168 coupling process Methods 0.000 claims description 26
- 238000005859 coupling reaction Methods 0.000 claims description 26
- 239000002184 metal Substances 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 230000006978 adaptation Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
- B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- General Health & Medical Sciences (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The invention discloses a child safety seat and a chair back pitching angle adjusting mechanism, which comprises a base and a chair body, wherein an arc-shaped track is arranged at the bottom of the chair body, a rotating frame with a U-shaped groove capable of sliding in the arc-shaped track is arranged in the arc-shaped track, a central shaft of the rotating frame is connected to the base, a gear control component for controlling the moving range of the rotating frame in the arc-shaped track is arranged between the base and the chair body, at least one U-shaped connecting part is fixedly arranged on the chair body, the U-shaped connecting part comprises a transverse connecting part and two end parts, the two end parts of the U-shaped connecting part are fixedly arranged on the chair body, a chute component which is used for the transverse connecting part to pass through and can enable the transverse connecting part to move is arranged on the rotating frame, and the front and back movable connection of the rotating frame and the chair body is realized only through the U-shaped connecting part and the rotating frame, and the chair body is transversely and longitudinally fixed.
Description
Technical Field
The invention relates to a child safety seat, in particular to a chair back pitching angle adjusting mechanism and a child safety seat.
Background
Child safety seats are typically mounted on car seats, and the vehicle provides two ISOFIX interfaces that connect with ISOFIX components on the child safety seat.
The utility model provides a 360 degrees rotatory children's safety seat of angle regulation of pitching of degree that China authorized bulletin number CN105034873B discloses, includes seat body and base, and the base of seat body is the cambered surface, is equipped with the arc spout on the cable face, and the slip is equipped with the arc fixed plate in the arc spout, and the bottom fixed connection of arc fixed plate is on above the rotary disk, and the rotary disk is fixed with the base, this internal pitch angle adjustment mechanism that is used for adjusting between seat body and the base that is equipped with of seat, angle adjustment mechanism includes regulation baffle, regulation baffle includes pressing part, articulated part and bulge, articulated part and seat body are articulated.
The utility model provides a back of chair pitch angle adjustment mechanism and children's safety seat that publication number is CN108128221A, including base and the chair body, be equipped with the headrest on the chair body, the chair body is equipped with the arc track that extends to the back of the chair direction including integrative seat support and back of the chair, the bottom of seat support, be equipped with the arc mount on the back of the chair of slidable installation in the arc track, the bottom of arc mount is equipped with the fixed axle of coupling in the base, realizes the pitch angle of back of the chair through removing the position of arc mount in the arc track.
The structure and the installation of the arc-shaped fixing frame on the chair back can increase the production cost of the child safety seat.
Disclosure of Invention
The invention aims to solve the technical problems of the child safety seat and the chair back pitching angle adjusting mechanism, which can reduce the production cost, and further provides the child safety seat with the chair back pitching angle adjusting mechanism.
The technical scheme provided by the invention for solving the technical problems is as follows: the chair back pitching angle adjusting mechanism of the child safety chair comprises a base and a chair body, wherein an arc-shaped track is arranged at the bottom of the chair body, a rotating frame with a U-shaped groove capable of sliding in the arc-shaped track is arranged in the arc-shaped track, a central shaft of the rotating frame is connected to the base, a gear control assembly for controlling the moving amplitude of the rotating frame in the arc-shaped track is arranged between the base and the chair body, at least one U-shaped connecting portion is fixedly arranged on the chair body, the U-shaped connecting portion comprises a transverse connecting portion and two end portions, the two end portions of the U-shaped connecting portion are fixed on the chair body, and a sliding groove assembly for allowing the transverse connecting portion to pass through and enabling the transverse connecting portion to move is arranged on the rotating frame.
The further preferable scheme of the invention is as follows: the U-shaped connecting part is a U-shaped metal strip, and two end parts of the U-shaped metal strip are fixed on the chair body.
The further preferable scheme of the invention is as follows: through holes for the U-shaped metal strips to pass through are formed in the thickness direction of the chair body, threads are formed at the end parts of the U-shaped metal strips, and nuts limited in the front of the chair body are screwed on the threads at the end parts so as to fix the U-shaped metal strips on the chair back.
The further preferable scheme of the invention is as follows: the screw cap is trapped in the concave area of the front surface of the chair body, and the outer surface of the screw cap is lower than the front surface of the chair body.
The further preferable scheme of the invention is as follows: the diameter of the U-shaped metal strip is 6-10mm.
The further preferable scheme of the invention is as follows: two chute components are arranged on the rotating frame, and each chute component corresponds to one U-shaped connecting part.
The further preferable scheme of the invention is as follows: the chute assembly includes chutes disposed on opposite sides of the rotating frame.
The further preferable scheme of the invention is as follows: the gear control assembly comprises a plurality of gear grooves on the rotating frame and gear shafts limited on the chair body, wherein the gear shafts fall into different gear grooves to limit the pitching angle of the base and the chair body.
The further preferable scheme of the invention is as follows: the gear control assembly comprises a gear plate with a handle and a limiting frame with a vertical groove, wherein the limiting frame is fixed on the chair body and provided with an inclined groove, the gear shaft simultaneously penetrates through the vertical groove and the inclined groove, and the gear plate moves to enable the gear shaft to move in the inclined groove and the vertical groove.
Another subject of the invention is: the child safety seat comprises the chair back pitching angle adjusting mechanism.
Compared with the prior art, the invention has the advantages that the two ends of the chute assembly on the rotating frame which can pass through the transverse connecting part of the U-shaped connecting part and enable the transverse connecting part to move are fixed on the chair body, so that the front and back movable connection of the rotating frame and the chair body can be realized, and the two ends of the chute assembly are transversely and longitudinally fixed, the structure is simple, the fittings are fewer, and the cost is lower.
Drawings
The invention will be described in further detail below in connection with the drawings and the preferred embodiments, but it will be appreciated by those skilled in the art that these drawings are drawn for the purpose of illustrating the preferred embodiments only and thus should not be taken as limiting the scope of the invention. Moreover, unless specifically indicated otherwise, the drawings are merely schematic representations, not necessarily to scale, of the compositions or constructions of the described objects and may include exaggerated representations.
FIG. 1 is a perspective view of a preferred embodiment of the present invention;
FIG. 2 is a schematic view showing the installation of a chair body according to a preferred embodiment of the present invention;
FIG. 3 is a second schematic view of the installation of a chair body according to a preferred embodiment of the present invention;
FIG. 4 is a schematic view showing the installation of a chair body and a headrest according to a preferred embodiment of the present invention;
FIG. 5 is a schematic view of a chair body according to a preferred embodiment of the present invention;
FIG. 6 is a second schematic view of a chair body according to a preferred embodiment of the present invention;
FIG. 7 is a third schematic view of a chair body according to a preferred embodiment of the present invention;
FIG. 8 is an enlarged view of a portion of FIG. 5;
FIG. 9 is a schematic view of a base of a preferred embodiment of the present invention;
FIG. 10 is a second schematic view of a base according to a preferred embodiment of the present invention;
FIG. 11 is a schematic view of a base of a preferred embodiment of the present invention;
FIG. 12 is a schematic view of a spin stand according to a preferred embodiment of the present invention;
FIG. 13 is a schematic view of a U-shaped coupling portion according to a preferred embodiment of the present invention;
FIG. 14 is a schematic view of a ring support according to a preferred embodiment of the present invention;
FIG. 15 is a schematic view of a ganged lock according to a preferred embodiment of the present invention;
FIG. 16 is a schematic view of a first locking lever of a preferred embodiment of the present invention;
FIG. 17 is a schematic view of a gear plate according to a preferred embodiment of the present invention;
FIG. 18 is a schematic view of a stop block according to a preferred embodiment of the present invention;
FIG. 19 is a schematic view of a headrest of a preferred embodiment of the present invention;
FIG. 20 is a schematic illustration of the connection of a first coupling member to a first stop member or a second coupling member to a second stop member in accordance with a preferred embodiment of the present invention;
FIG. 21 is a schematic view of a fixed block according to a preferred embodiment of the present invention;
FIG. 22 is a second schematic view of a fixed block according to a preferred embodiment of the present invention;
fig. 23 is an exploded view of a fixed block according to a preferred embodiment of the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative, exemplary, and should not be construed as limiting the scope of the invention.
It should be noted that: like reference numerals denote like items in the following figures, and thus once an item is defined in one figure, it may not be further defined and explained in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that the terms "first," "second," and the like, unless explicitly specified and defined otherwise, are merely for distinguishing the description and are not to be construed as indicating or implying relative importance, and that the specific meaning of the above terms in the present invention will be understood to those of ordinary skill in the art in the specific context.
As shown in fig. 1, the child safety seat includes a base 100, a seat body 200, and a headrest 300. The chair body 200 comprises a seat 201 and a back 202. The seat 201 of the seat body 200 is assembled to the base 100, and the headrest 300 is assembled inside the backrest 202 of the seat body 200.
As shown in fig. 2, the chair body 200 and the base 100 are connected by a rotational connection structure such that the chair body 200 can horizontally rotate with respect to the base 100, thereby facilitating multi-angle caretaking of a child seated in the child safety seat during use.
1-2 and 5-16, the chair body 200 is pivotally coupled to the base 100 by a longitudinal fixing shaft 01, so that the chair body 200 can rotate relative to the base 100.
An annular bracket 2 fixed on the chair body 200 is arranged below the chair body 200, and two opposite positioning holes 04 are distributed in the annular bracket 2. The number of the positioning holes 04 is at least one, and a plurality of pairs can be arranged along the annular bracket 2 according to the requirement for positioning the chair body 200 at different angles, so as to realize the switching of different gears of the rotation of the chair body 200.
The base 100 is provided with a linkage lock 3, the linkage lock 3 penetrates through the diameter direction of the annular bracket 2, and two ends of the linkage lock 3 are provided with a pair of locking rods which are in the same straight line with the fixed shaft 01, namely a first locking rod 31 and a second locking rod 32. When the chair body 200 rotates to the positioning holes 04 of the corresponding gear, the first locking rod 31 and the second locking rod 32 respectively penetrate into a pair of positioning holes 04 on the annular bracket 2 to fix the positions of the base 100 and the chair body 200, and when the chair body 200 needs to be rotated, the first locking rod 31 and the second locking rod 32 are unlocked and separated from the positioning holes 04. During the rotation of the chair body 200 relative to the base 100, the front end of the first locking rod 31 on the linkage lock 3 is propped against the inner wall 2a of the annular bracket 2, the front end of the second locking rod 32 on the linkage lock 3 is propped against the outer wall 2b of the annular bracket 2, and when the chair body rotates to the position of the next pair of positioning holes 04, the first locking rod 31 and the second locking rod 32 are automatically locked again.
Specifically, as shown in fig. 14, the ring-shaped bracket 2 is disposed at a middle position of the bottom of the seat 201, and is composed of two semicircular brackets, which are symmetrically distributed in front and rear directions. Preferably, the annular support 2 is made of plastic or metallic material.
As shown in fig. 2, 5 and 14, a notch is formed in the middle position of each semicircular bracket, the opening direction of the notch faces to the base 100, and a first pair of positioning holes, namely a first positioning hole 04a and a second positioning hole 04b, are formed in the notch. A convex mounting part 05 is arranged above the notch provided with the first positioning hole 04a and the second positioning hole 04b. In addition, the fixing portion 07 protruding toward the center of the arc is provided inside the mounting portion 05, and two side-by-side longitudinal holes, which are through holes, are provided in the fixing portion 07.
Preferably, the free ends of the two semicircular brackets are spaced apart by a distance to form a notch as another pair of positioning holes of the ring-shaped bracket 2, namely, the third positioning hole 04c and the fourth positioning hole 04d, so that the chair body 200 can be positioned in the left-right direction.
As shown in fig. 5 and 8-12, an arc-shaped rotating frame 1 is further arranged below the chair body 200, namely at the bottom of the seat 201, the arc-shaped concave surface 1a faces the chair body 200, and the convex surface 1b faces the base 100. The rotating frame 1 extends in the front-rear direction, and both ends thereof are fixed to a fixing portion 07 of the ring frame 2. The center of the convex surface 1b of the rotating frame 1 is provided with a cylindrical fixing shaft 01, and the fixing shaft 01 is inserted into a shaft hole 02 adapted to the base 100, so that the chair body 200 can rotate 360 degrees around the fixing shaft 01.
The two ends of the convex surface 1b of the rotating frame 1 are provided with U-shaped fixing pieces 03, the two ends of the U-shaped fixing pieces 03 respectively penetrate through two holes in the fixing portion 07 of the annular support 2 and then penetrate through the through holes in the rotating frame 1 and are fixed by fasteners, and the matching mode of the U-shaped fixing pieces 03 and the holes of the fixing portion 07 is a tight matching mode, so that the rotating frame 1 is fixedly bridged on the annular support 2, and meanwhile, the connection between the annular support 2 and the chair body 200 is further reinforced.
Further, the transverse section of the U-shaped fixing member 03 is far away from the lower edge of the fixing portion 07, so that the U-shaped fixing member 03 and the fixing portion 07 enclose to form a hole structure, and the hole structure is opposite to the notch in the middle of the annular bracket 2, and the hole structure and the notch form a first positioning hole 04a or a second positioning hole 04b together.
As shown in fig. 9 to 14, the middle area of the upper surface of the base 100 has a concave area T, an annular groove 08 matching with the annular bracket 2 is provided in the concave area T, the annular groove 08 becomes a track for rotating the annular bracket 2, and when the chair body 200 and the base 100 are assembled, the annular bracket 2 is embedded into the annular groove 08, thus playing a role in positioning and supporting the annular bracket 2, preventing horizontal micro-offset and longitudinal inclination during rotation, and enabling the rotation to be smoother and more stable.
The middle position of the concave area T is provided with an axle seat 09 with an axle hole 02, the axle seat 09 protrudes out of the concave area T, the height of the axle seat 09 is related to the distance between the rotating frame 1 and the base 100, preferably, the height of the axle seat 09 is lower than the protruding height of the annular bracket 2 after being assembled to the annular groove 08, after the fixing axle 01 is inserted into the axle hole 02, the upper surface of the axle seat 09 is not contacted with the convex surface 1b of the rotating frame 1, so that the upper surface of the axle seat 09 and the convex surface are prevented from being rubbed with each other, and the blocking phenomenon is caused to the rotation of the chair body 200.
As shown in fig. 1-2, 9-10 and 15-16, the linkage lock 3 on the base 100 is arranged along the front-back direction, and comprises a pull plate 003 with a rectangular frame, one end of the pull plate 003 continues to extend to form a handle 30, and an inward protruding part is integrally injection-molded on the pull plate 003 at one end of the handle 30, and the protruding part is a second locking rod 32, so that the size of the protruding part is adapted to the size of four positioning holes 04. The other end of the pulling plate 003 is fixed with a metal locking bar having a diameter adapted to the four positioning holes 04, i.e., a first locking bar 31. The protruding direction of the first locking lever 31 coincides with the protruding direction of the second locking lever 32, and all faces the rear end of the base 100.
The rectangular frame of the pulling plate 003 is sleeved outside the shaft seat 09, so that the linkage lock 3 can be horizontally pushed back and forth in the diameter direction of the annular bracket 2. It should be noted that the front end of the base 100 is provided with a first opening 1A through which the handle 30 is exposed, and when the handle 30 is pulled out, the first locking lever 31 and the second locking lever 32 are withdrawn from the positioning hole 04, so that the base 100 is unlocked from the chair body 200.
After unlocking, the first locking rod 31 is retracted to the inner wall 2a of the annular bracket 2, the second locking rod 32 is retracted to the outer wall 2b of the annular bracket 2, and when the chair body 200 is rotated, the front end of the first locking rod 31 on the linkage lock 3 is propped against the inner wall 2a of the annular bracket 2, and the front end of the second locking rod 32 on the linkage lock 3 is propped against the outer wall 2b of the annular bracket 2. A return spring is arranged between the pull plate 003 and the base 100, and when the handle 30 is released, the return force of the return spring enables the linkage lockset 3 to always keep the force of backward movement. When rotating, the first locking rod 31 and the second locking rod 32 of the linkage lock 3 are blocked by the annular bracket 2, so that the linkage lock 3 cannot move backwards; when the chair body 200 is rotated to the position of the next pair of positioning holes 04, the blocking of the backward movement of the linkage lock 3 by the annular bracket 2 disappears, and the first locking bar 31 and the second locking bar 32 are automatically locked again.
Preferably, the base 100 is further provided with a fixing lock hole 010, which includes a first fixing lock hole 010a located at the inner side of the annular bracket 2 and a second fixing lock hole 010b located at the outer side of the annular bracket 2, and the first locking rod 31 passes through the first fixing lock hole 010a and then passes through the positioning hole 04 to be finally inserted into the second fixing lock hole 010 b. The fixing locking hole 010 not only makes the positioning of the base 100 and the chair body 200 more stable, but also provides a track for the first locking lever 31 to move in sequence, avoiding the deflection thereof.
As shown in fig. 3, the present embodiment can achieve the tilt angle adjustment of the seatback 202 of the safety seat by the forward and backward movement of the swivel stand 1.
As shown in fig. 5 to 6, the bottom of the chair body 200 is provided with an arc-shaped rail 4 along the installation direction of the arc-shaped rotating frame 1, the size of the arc-shaped rail 4 is matched with that of the rotating frame 1, and the rotating frame 1 can slide on the arc-shaped rail 4.
As shown in fig. 2, 5, 8-9, 12-13, both side edges of the concave surface 1a of the rotating frame 1 are provided with side plates 012, thereby forming a U-shaped groove. Opposite long-strip-shaped sliding grooves 011 are formed at the front and rear ends of the opposite side plates 012, and the opposite long-strip-shaped sliding grooves 011 form a sliding groove assembly for the U-shaped connecting part 5 to pass through so as to connect the rotating frame 1 and the chair body 200.
Specifically, as shown in fig. 13, the U-shaped coupling portion 5 is a U-shaped metal strip, preferably having a uniform diameter of 6-10mm throughout. The U-shaped coupling part 5 includes a lateral coupling part 51 and two end parts 52, the lateral coupling part 51 passes through the chute assembly, and the two end parts 52 are provided with threads and are fixed to the bottom of the chair body 200 by screw connection. The rotating frame 1 can move back and forth due to the movable connection of the U-shaped connecting part 5 and the chute assembly.
The chair body 200 and the base 100 are firmly connected in the vertical direction by the connection of the U-shaped connection part 5 to the rotating frame 1, the shaft connection of the rotating frame 1 and the base 100, and the jogging of the annular bracket 2 and the annular groove 08.
And, as shown in fig. 5 to 7, through holes through which both end portions 52 of the U-shaped metal bar pass are formed in the thickness direction of the chair body 200, and nuts defined at the front of the chair body 200 are screwed on the end portions 52 to fix the U-shaped metal bar to the chair back 202. The connecting mode has the advantages of few accessories, simple structure, lower cost and strong reliability of connection.
Preferably, the screw cap is caught in a recess of the front surface of the seat body 200, and the outer surface of the screw cap is lower than the front surface of the seat body 200 so as not to affect the comfort of the child using the safety seat.
As shown in fig. 3 and 12, the shift control assembly includes a plurality of first shift grooves 013 on the swivel frame 1 and first shift shafts 014 defined on the chair body 200, the first shift shafts 014 falling into different first shift grooves 013 to define the tilt angles of the base 100 and the chair body 200.
Specifically, a first shift groove 013 is provided between the two slide grooves 011 of the side plate 012 of the rotating frame 1, and the plurality of first shift grooves 013 are open at the upper ends and communicate with each other, so that the first shift shaft 014 can switch between the first shift grooves 013.
As shown in fig. 3, 12, 17-18, the shift control assembly further includes a shift plate 6 with a handle 60 and a stopper 7 with a vertical groove 7a fixed to the chair body 200. Preferably, the handle 60 is exposed from the second opening 1B at the front end of the chair body 200, and the gear plate 6 can be controlled by operating the handle 60. The shift plate 6 is a U-shaped member with an opening facing rearward, and two pairs of side portions 61 thereof are fitted outside the side plates 012 of the rotating frame 1. The two pairs of side portions 61 are provided with inclined grooves 6a, and the inclined grooves 6a are inclined from low to high from front to rear.
The limit frame 7 is arranged between the gear plate 6 and the rotating frame 1. The vertical groove 7a is always opposite to a part of the inclined groove 6a, and the gear shaft penetrates into the gear groove of the rotating frame 1 after penetrating through the vertical groove 7a and the inclined groove 6a at the same time. Pulling the handle 60 forward or pushing the handle 60 backward may push the first gear shaft 014 up and down, so that the first gear shaft 014 moves in the diagonal grooves 6a and the vertical grooves 7a and switches in the first gear groove 013 of the rotary rack 1. Specifically, the handle 60 is forward, and the first gear shaft 014 is inclined upward along the inclined groove 6a and is separated from the first gear groove 013, so that the chair body can slide relative to the base.
As shown in fig. 4, a height adjusting mechanism is provided between the headrest 300 and the seatback 202 of the seat body 200. The headrest 300 can move up and down relative to the chair body 200 through the adjusting mechanism so as to adapt to the riding requirements of children with different heights.
As shown in fig. 1 and 3-7, a gear groove group 8 and two first guide grooves 9 are longitudinally distributed on a chair back 202 on the inner side of the chair body 200, and the gear groove group 8 is arranged in a strip-shaped groove recessed in the middle of the chair back 202 and consists of a plurality of second gear grooves 015 longitudinally and linearly distributed. The first guide grooves 9 are symmetrically distributed on two sides of the gear groove group 8 and are longitudinally extending strip-shaped through holes parallel to the gear groove group 8. The upper part of the seat back 202 is provided with a second coupling member 10, and the second coupling member 10 is positioned right above the gear groove group 8, is a screw penetrating from the rear side inwards from the second coupling hole 11 of the seat back 202, and is oriented substantially perpendicular to the inner surface of the seat back 202.
As shown in fig. 1, 7, 19 to 20, a second guide groove 13 is provided in the middle of the headrest 300 at a position corresponding to the shift position groove group 8. And two first coupling holes 14 horizontally arranged side by side are arranged below the second guide groove 13, the horizontal position of the first coupling holes 14 corresponds to the first guide groove 9 of the chair back 202, and the first coupling pieces 15 pass through the first coupling holes 14.
Further, the first coupling member 15 passes through the first guide groove 9 of the seat body 200 and is laterally restrained by the first restraining member 16, and the second coupling member 10 fixed to the upper portion of the seatback 202 passes through the second guide groove 13 of the headrest 300 and is laterally restrained by the second restraining member 17; when the headrest 300 moves upward with respect to the seat body 200, the first link 15 moves upward along the first guide groove 9, and the second link 10 and the second guide groove 13 are displaced relatively; conversely, when the headrest 300 moves downward with respect to the seat body 200, the first link 15 moves downward along the first guide groove 9, and the second link 10 moves relative to the second guide groove 13.
The first limiting member 16 and the second limiting member 17 are a pair of nuts for fixing the two ends of the first coupling member 15 or the second coupling member 10, and the outer diameter of the nuts is larger than the width of the corresponding first guide groove 9 or second guide groove 13 and is also larger than the diameter of the first coupling hole 14 or the second coupling hole 11. It should be noted that the first stopper 16 and the second stopper 17 fix the first link 15 or the second link 10 in the thickness direction of the seat body 200, but should leave an appropriate gap for the relative sliding of the headrest 300 and the seat body 200, preventing the headrest 300 from being unable to move due to over tightening.
As shown in fig. 3 and 21-23, a fixed block 18 with a holding cavity 018 is fixedly installed in front of the middle second guide groove 13 of the headrest 300, that is, the horizontal position of the fixed block 18 corresponds to the gear groove group 8 of the chair body 200, and a sliding block 19 and a clamping block 20 are arranged in the holding cavity 018 of the fixed block 18.
The sliding block 19 is connected with a strip-shaped soft drawstring 400 which penetrates from the upper end of the accommodating cavity 018 of the fixed block 18, extends upwards, penetrates through the second guide groove 13 and exposes out of the upper part of the headrest 300, and forms a holding part for pushing and pulling. The sliding block 19 can be driven to move by pulling the flexible pull tape 400. The flexible pull strap 400 is located in the gap between the headrest 300 and the chair body 200, preferably, the flexible pull strap 400 is located in front of the gear groove group 8 and shields the second coupling member 10 and the nut fastening the second coupling member 10, and does not interfere with the sliding of the second coupling member 10 in the second guide groove 13.
The lock block 20 is provided above the slide block 19, and the lock block 20 has a second gear shaft 016 protruding inward. And the fixed block 18 is provided with a through hole that can be penetrated by the second gear shaft 016, and the second gear shaft 016 can be extended backward through the fixed block 18 and the end can be higher than the outer surface of the headrest 300.
The sliding block 19 is provided with a first inclined surface 19a, the first inclined surface 19a inclines from the inner side of the chair back 202 to the outer side from low to high, the clamping block 20 is provided with a second inclined surface 19b, and the first inclined surface 19a and the second inclined surface 19b are matched with each other. A first return spring 21 is provided between the lock block 20 and the fixed block 18. When the sliding block 19 is moved upward by pulling the flexible strap 400, the positioning block 20 is displaced in the direction of the headrest 300, the first return spring 21 is compressed and deformed, the second gear shaft 016 on the positioning block 20 leaves the corresponding second gear groove 015, and no lock is provided between the headrest 300 and the chair body 200, so that the headrest 300 can be moved relative to the chair body 200 by pushing.
Further, a second return spring is arranged between the sliding block 19 and the inner wall of the fixed block 18, when the sliding block 19 moves upwards, the second return spring is stretched and deformed, and when the soft pull belt 400 is not pulled, the sliding block 19 is reset under the action of the second return spring, at this time, the first return spring 21 also resets the clamping block 20, and the second gear shaft 016 extends backwards and can fall into the gear groove, so that the headrest 300 and the chair body 200 are locked.
The invention has been described in detail with reference to the child safety seat and chair back pitch angle adjustment mechanism provided by the present invention, and specific examples are used herein to illustrate the principles and embodiments of the invention, and the above examples are only for aiding in understanding the invention and core idea. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (10)
1. The chair back pitching angle adjusting mechanism of the child safety chair is characterized by comprising a base and a chair body, wherein an annular bracket fixed on the chair body is arranged below the chair body, and an arc-shaped rotating frame with a U-shaped groove is arranged below the chair body;
the rotating frame extends along the front-back direction, two ends of the rotating frame are fixed on the fixing part of the annular bracket, the center of the convex surface of the rotating frame is provided with a fixed shaft, and the fixed shaft is inserted into a shaft hole matched with the base, so that the chair body can rotate around the fixed shaft;
the bottom of the chair body is provided with an arc-shaped track along the installation direction of the arc-shaped rotating frame, and the rotating frame can slide on the arc-shaped track;
the chair comprises a base, a chair body, a rotating frame, a gear control assembly, a sliding groove assembly and a sliding groove assembly, wherein the gear control assembly is used for controlling the movement range of the rotating frame in an arc-shaped track, at least one U-shaped connecting part is fixedly arranged on the chair body, the U-shaped connecting part comprises a transverse connecting part and two end parts, the two end parts of the U-shaped connecting part are fixedly arranged on the chair body, and the sliding groove assembly is arranged on the rotating frame and used for allowing the transverse connecting part to pass through and enabling the transverse connecting part to move.
2. The reclining angle adjustment mechanism of a child safety seat according to claim 1, wherein the U-shaped coupling portion is a U-shaped metal bar, and both ends of the U-shaped metal bar are fixed to the seat body.
3. The reclining mechanism of a child safety seat according to claim 2, wherein a through hole through which the U-shaped metal bar passes is formed in a thickness direction of the seat body, a screw thread is formed at an end portion of the U-shaped metal bar, and a nut defined at a front of the seat body is screwed on the screw thread at the end portion to fix the U-shaped metal bar to the seat back.
4. A chair back pitch angle adjustment mechanism for child safety seats according to claim 3, wherein said nut is trapped in a recess in the front surface of the chair body and the outer surface of the nut is lower than the front surface of the chair body.
5. The reclining chair back angle adjustment mechanism of child safety seat according to claim 2, wherein the U-shaped metal strip has a diameter of 6-10mm.
6. The reclining chair back angle adjustment mechanism of child safety seat according to claim 1, wherein two chute assemblies are provided on said swivel frame, each chute assembly corresponding to a U-shaped coupling portion.
7. The child safety seat back pitch angle adjustment mechanism according to claim 1, wherein the chute assembly comprises chutes disposed on opposite sides of the swivel frame.
8. The child safety seat back pitch angle adjustment mechanism according to claim 1, wherein the shift control assembly comprises a plurality of shift slots on the swivel mount and a shift shaft defined on the seat body, the shift shaft falling into different shift slots to define a pitch angle of the base and the seat body.
9. The reclining mechanism of a child safety seat according to claim 8, wherein the gear control assembly comprises a gear plate with a handle and a limiting frame with a vertical groove fixed on the seat body, the gear plate is provided with an oblique groove, the gear shaft passes through the vertical groove and the oblique groove at the same time, and the gear plate moves to enable the gear shaft to move in the oblique groove and the vertical groove.
10. Child safety seat, characterized in that it comprises a seat back pitch angle adjustment mechanism according to any one of claims 1-9.
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| CN201910894384.9A CN110466400B (en) | 2019-09-20 | 2019-09-20 | Child safety seat and chair back pitching angle adjusting mechanism |
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| CN201910894384.9A CN110466400B (en) | 2019-09-20 | 2019-09-20 | Child safety seat and chair back pitching angle adjusting mechanism |
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| CN110466400B true CN110466400B (en) | 2024-03-22 |
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| CN113071390B (en) * | 2021-05-19 | 2022-07-05 | 安徽永驰婴童智能科技有限公司 | Chair body rotation and pitch angle adjusting mechanism and child safety seat |
| JP7270316B1 (en) * | 2021-07-15 | 2023-05-10 | コンビ株式会社 | child seat |
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| CN110466400A (en) | 2019-11-19 |
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Address after: 246121 Liren West Road, industrial park, Huaining County, Anqing City, Anhui Province Applicant after: Anhui Yongchi Infant Technology Co.,Ltd. Address before: 246121 Liren West Road, industrial park, Huaining County, Anqing City, Anhui Province Applicant before: ANHUI YONGCHI BABY SAFETY TECHNOLOGY Co.,Ltd. |
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