CN114348099A - A reversible seat 360° rotating retractable structure and children's vehicle - Google Patents

Abstract

The invention discloses a reversible seat 360° rotating retractable structure and a child carrier, comprising an unlocking operating member, a middle seat and an installation shaft. The middle seat includes an upper seat and a lower seat, the upper seat and the seat rotate synchronously around the installation shaft, and the lower seat and the lower seat rotate synchronously around the installation shaft. The seat is fixed on the mounting shaft and has a locking part for locking the front leg tube, the upper seat includes a pair of upper unlocking components, the lower seat includes a pair of lower unlocking components, and the pair of upper unlocking components and the pair of lower unlocking components are respectively connected to the mounting shaft It is axially symmetrical, and when the upper seat is rotated to the seat facing forward or backward, the upper unlocking component is connected to the lower unlocking component, and the unlocking operation member is operated to link the upper unlocking component and the lower unlocking component, and then the locking component is linked to unlock the front leg to realize the closing of the car. When the seat is turned to the forward or backward position, the vehicle can be retracted normally by unlocking the front leg tube, the car can be retracted without the seat in a fixed direction, the operation is convenient, the retracting efficiency is high, and the car can be retracted in a non-fixed direction. , the seat does not fold up well with the frame.

Description

A reversible seat 360° rotating retractable structure and children's vehicle

technical field

The invention relates to a reversible seat 360° rotating retractable structure that can be retracted when the seat is rotated to a forward or rearward position, and a child carrier including the reversible seat 360° retractable retractable structure.

Background technique

Children's vehicles provide convenience for children's outdoor activities, and it greatly reduces the burden of people when they go out. In order to facilitate carrying and transportation, the existing children's carriers are generally foldable to reduce the occupation of space.

General child carriers have fixed and reversible seats. 1. Fixed type, that is, the seat is fixed on the frame of the child carrier and the seat faces forward, and cannot be removed; 2. Reversible type, the seat can be reversed back and forth . For reversible children's vehicles, when closing the car, some need to remove the reversing seat to fold the frame, and some can fold the frame without removing the reversing seat, but the reversing seat The seat can only be fixed in one direction to fold the frame, which brings the problem of inconvenient operation; and when the reversing seat is folded in the other direction, the reversing seat will protrude abnormally from the frame, As a result, the reversing seat cannot be folded and fitted well with the frame, making it impossible to properly close the car.

SUMMARY OF THE INVENTION

The first object of the present invention is to provide a 360° rotating retractable structure for the reversible seat with convenient operation and high retracting efficiency.

The first object of the present invention is achieved through the following technical measures: a 360° rotating retractable seat structure, which includes an unlocking operating member, a middle seat and an installation shaft, the middle seat includes an upper seat and a lower seat, The upper seat and the seat can rotate synchronously around the installation shaft, the lower seat is fixed on the installation shaft and has a locking member for locking the front leg tube, the upper seat includes a pair of upper unlocking components, and the lower seat includes a pair of The lower unlocking assembly, the pair of upper unlocking assemblies and the pair of lower unlocking assemblies are respectively arranged axially symmetrically with respect to the installation axis, when the upper seat is rotated to the seat forward or rearward position, the upper unlocking assembly is connected to the lower unlocking assembly, and by operating the The unlocking operation member is linked with the upper unlocking component and the lower unlocking component, and then linked with the locking component, so as to unlock the front leg tube to realize the closing of the vehicle.

In the present invention, when the seat is rotated to the forward or backward position, the vehicle can be retracted normally by unlocking the front legs, and the vehicle can be retracted without the seat being in a fixed direction. Therefore, the present invention is convenient to operate, has high retraction efficiency, and avoids the need for In the prior art, when the vehicle is retracted in a non-fixed direction, the seat cannot be folded and fitted well with the vehicle frame, so that the vehicle cannot be retracted normally.

The upper unlocking component and the lower unlocking component of the present invention are provided with a snap-fit structure that can connect the two vertically and allow them to be disengaged in the circumferential direction, and the unlocking operating member can be linked to all the vertically connected components. The upper unlocking assembly and the lower unlocking assembly move upwards, and the lower unlocking assembly moves upwards to cancel its limit on the locking member and retract the locking member to unlock the front leg tube.

The upper seat of the present invention includes an upper cover, the upper cover is fixed on a vertically arranged U-shaped support pipe, the U-shaped support pipe is rotatably installed on the installation shaft, and the upper end of the U-shaped support pipe For installing the seat, the upper end of the upper unlocking assembly is connected to the upper cover, and the lower end passes through the U-shaped support pipe downward.

The upper unlocking assembly of the present invention is mainly composed of a retracting pressure block and a sliding column, the unlocking operation member is movably mounted on the top cover and has a pressing portion, and the retracting pressure block is located between the U-shaped support tube and the top cover. The U-shaped support tube is provided with an opening for the sliding column to pass through. sliding connection; the lower unlocking assembly includes a retracting linkage rod, and the lower end of the retracting linkage rod cooperates with a locking member through an inclined surface, and the locking member utilizes the restoring force of a stretched first elastic member to retract the car When the linkage rod moves upward, it gradually retracts along the inclined plane.

The unlocking operating member of the present invention is a handle, both ends of the handle are hinged on both sides of the upper cover, and the pressing portion is the bottom surface of the end of the handle, on which a notch-shaped bayonet is opened, the The outer end of the car-receiving pressure block is a raised part, and the raised part is located in the bayonet. By turning the handle, the raised part moves to the pressing part along the bayonet wall relatively and is pressed down, so that the upper part of the car-receiving pressure block is pressed down. The inner end is moved up; the inner end of the closing pressure block is provided with a long sliding hole, and the upper end of the upper link rod is provided with a sliding column, and the sliding column is located in the sliding hole and can be pressed with the closing vehicle. The upward movement of the inner end of the block moves along the sliding hole to drive the upper link rod to move upward. The linkage rod can return to its original position under the action of the restoring force of the second elastic member.

The engaging structure of the present invention is located between the upper end of the retracting linkage rod and the lower end of the sliding column, and includes a T-shaped slot set at the lower end of the sliding column and an upper end of the retracting linkage rod The T-shaped clip is located in the T-shaped slot, so that the sliding column and the car-retracting linkage are connected vertically, and rotates with the sliding column, and the T-shaped slot is separated from the T-shaped clip.

The lower seat of the present invention includes an installation casing, the upper end of the installation casing has an annular guide groove, the upper linkage rod moves along the guide groove, and the lower linkage rod and the locking member are located at The lower part of the housing is installed, and the T-shaped clip of the lower link rod is located in the guide groove.

The lower end of the lower link rod of the present invention is a first inclined surface, and the locking member is mainly composed of a block body and a clamping column at the front end thereof. The second inclined surface is matched with the inclined surface, and the first elastic member is arranged between the rear end of the locking member and the installation housing.

The front side of the installation casing of the present invention is rotatably installed with the front leg tube, the rear side of the installation casing is fixedly installed with the rear leg tube, and the locking column of the locking member locks the front leg tube by restricting its rotation against the front leg tube.

The second object of the present invention is to provide a child carrier including the above-mentioned 360° rotating retractable structure for the reversible seat.

The second object of the present invention is achieved through the following technical measures: a child carrier, comprising the above-mentioned 360° rotating retractable structure for the reversible seat.

Compared with the prior art, the present invention has the following remarkable effects:

In the present invention, when the seat is rotated to the forward or backward position, the vehicle can be retracted normally by unlocking the front legs, and the vehicle can be retracted without the seat being in a fixed direction. Therefore, the present invention is convenient to operate, has high retraction efficiency, and avoids the need for In the prior art, when the vehicle is retracted in a non-fixed direction, the seat cannot be folded and fitted well with the vehicle frame, so that the vehicle cannot be retracted normally.

Description of drawings

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

1 is an exploded view of the overall structure of the present invention;

Fig. 2 is the three-dimensional structure diagram of the lower seat mounting shell of the present invention;

3 is a cross-sectional view of the assembly structure of the upper seat, the handle, the U-shaped support tube and the installation shaft of the present invention (in a locked state);

4 is a sectional view of the assembly structure of the lower seat, the installation shaft and the U-shaped support tube of the present invention (in a locked state);

Figure 5 is a sectional view of the overall structure of the present invention (in a locked state);

FIG. 6 is an exploded view of the assembly structure of the vehicle closing linkage rod and the locking component of the present invention;

7 is an exploded view of the assembly structure of the sliding column of the present invention and the car-retracting linkage rod;

8 is a front sectional view of the present invention in a locked state;

9 is a front sectional view of the present invention in an unlocked state;

Figure 10 is a side sectional view of the present invention in a locked state;

Figure 11 is a side sectional view of the present invention in an unlocked state;

Fig. 12 is a side cross-sectional view of the present invention when the front leg tube is in the unlocked state, and the front leg tube is close to the rear leg tube.

Detailed ways

As shown in Figures 1 to 12, it is a 360° rotating retractable seat structure of the present invention, which includes an unlocking operating member, a middle seat and an installation shaft 1, the middle seat includes an upper seat 2 and a lower seat 3, and the lower seat 3 Below the upper seat 2, the upper seat 2 can rotate synchronously with the seat (not shown in the figure) around the mounting shaft 1, the lower seat 3 is fixed on the mounting shaft 1 and has a locking member 19 for locking the front leg tube 4, the upper seat 2 Including a pair of upper unlocking components, the lower seat 3 includes a pair of lower unlocking components, the pair of upper unlocking components and the pair of lower unlocking components are respectively arranged with the installation shaft 1 in axisymmetric manner, when the upper seat 2 is rotated to the seat forward or rearward position When , the upper unlocking component is connected to the lower unlocking component, and the upper unlocking component and the lower unlocking component are linked by operating the unlocking operation member, and then the locking component is linked to unlock the front leg tube 4 to realize the closing of the vehicle.

The upper seat includes an upper cover 5 and an upper unlocking assembly. The upper cover 5 is fixed on the middle of a vertically arranged flat U-shaped support tube 11. The upper end of the U-shaped support tube 11 is used to install the seat. It is rotatably installed on the installation shaft 1 , specifically, a rotating shaft 16 is fixedly connected to the middle of the U-shaped support tube 11 , and the rotating shaft 16 is rotatably installed in the installation shaft 1 . The unlocking operating member is a handle 8, the two ends of the handle 8 are hinged on both sides of the upper cover 5 through the handle latch 9, the two ends of the handle 8 have a pressing portion 33, and the pressing portion 33 is the bottom surface of the end of the handle 8, on which the upper A notched bayonet 10 is provided.

The upper unlocking assembly is mainly composed of a closing pressure block 6 and an upper linkage rod 7 . The holes 34 pass downwardly through the U-shaped support tube 11 . The closing pressure block 6 is hinged on the upper cover 5 through the pressure block latch 12, the outer end of the vehicle closing pressure block 6 is a raised part 13, and the raised part 13 is located in the bayonet; the inner end of the vehicle closing pressure block 6 is connected to the upper The upper end of the linkage rod 7 is slidably connected, specifically: the retracting pressure block 6 is a U-shaped block part with a raised portion 13, and the inner ends of its two arms are provided with a pair of long sliding holes 14, and the upper linkage rod The upper end of 7 is provided with a pair of sliding posts 15, the sliding posts 15 are located in the sliding holes 14, and by rotating the handle 8 from the horizontal to the vertical state, the raised portion 13 is moved relatively along the wall of the bayonet 10 to the pressing portion 33 to be lowered. Press to make the inner end of the retracting pressure block 6 move upward. With the upward movement of the inner end of the retracting pressure block 6 , the sliding column 15 moves along the sliding hole and drives the upper linkage rod 7 to move upward, see FIG. 8 . A second elastic member is provided between the top end of the upper link rod 7 and the upper cover 5 , specifically a second spring 29 is used. Corresponding to the upper end of the second spring 29 , there is a positioning column for positioning the second spring 29 , the external force applied to the handle 8 is cancelled, and the upper link rod 7 can return to its original position under the restoring force of the second spring 29 .

The lower seat includes a mounting shell 17 and a lower unlocking assembly. The upper end of the mounting shell 17 has an annular guide groove 18 . The upper linkage rod 7 moves along the guide groove 18 . The locking member 19 and the lower unlocking assembly are located in the mounting shell 17 . In the lower part, the lower unlocking assembly includes a lower interlocking rod 20, and between the upper end of the lower interlocking rod 20 and the lower end of the upper interlocking rod 7, there is a connecting rod that can connect the two in the vertical direction and allow them to be disengaged in the circumferential direction. The snap-fit structure includes a T-shaped slot 21 located at the lower end of the upper link rod 7 and a T-shaped clip 22 set at the upper end of the lower link rod 20. The T-shaped clip 22 passes through the positioning hole 36 and is located in the guide groove In 18, the T-shaped chuck 22 is engaged in the T-shaped slot 21 so that the upper link rod 7 and the lower link rod 20 are connected vertically. At this time, the lower link rod 20 can be driven by the upper link rod 7. upward movement. And with the rotation of the upper link rod 7 , the T-shaped slot 21 is separated from the T-shaped head 22 .

The lower end of the lower link rod 20 is a first inclined surface 23, the locking member 19 is mainly composed of a block body 25 and a clamping column 24 at the front end thereof. 23 The matching second slope (not shown in the figure). The mounting housing 17 includes baffles 30 , which are located on both sides of the mounting housing 17 and are connected to the main body of the mounting housing through screws 31 . The shutters 30 can press the locking member 19 for fixing. A stretched first elastic member is provided between the rear end of the block body 25 and the installation housing 17 , and a first spring 26 is used. , when the front leg tube 4 is unlocked, the lower linkage rod 20 moves upward, the first inclined surface 23 of the lower linkage rod 20 moves up along the second inclined surface of the locking member 19, and the locking member 19 acts on the restoring force of the first spring 26 Moving downwards and backwards means retracting, that is, driving the clamping column 24 to retract.

The front side of the mounting case 17 is rotated to install the front leg tube 4 , the rear side of the mounting case 17 is fixedly installed with the rear leg tube 27 , and the locking post 24 of the locking member 19 locks the front leg tube 4 by restraining its rotation against the front leg tube 4 . The front leg tube 4 and the rear leg tube 27 are both tubular bodies with a triangular cross-section, and the rear side mounting hole of the mounting shell 17 is a triangular hole suitable for the rear leg tube 27, and the rear leg tube 27 is installed on the rear side. The seat spring 32 is fixedly mounted on the mounting housing 17; the front mounting hole of the mounting housing 17 is a circular hole, and the front leg tube 4 is rotatably mounted on the mounting housing 17 through the snap fixing seat 28 mounted on it. The locking seat 28 is provided with a locking hole 35. In the locked state, the locking column 24 extends into the locking hole 35 and presses against the front leg tube 4 so that it cannot rotate. The clamping hole 35 is released, and the restriction on the front leg tube 4 is released. At this time, the front leg tube 4 can be rotated in the A direction (counterclockwise direction) to move closer to the rear leg tube 27 to realize the closing of the vehicle.

A child carrier using the above-mentioned reversible seat 360° rotating retractable structure, which includes a reversible seat, a 360° reversible seat swivel retractable structure, front leg tubes, rear leg tubes and wheels, and the reversible seat is installed On the upper end of the U-shaped support tube, the front leg tube is rotatably mounted on the front side of the lower seat mounting shell, the rear leg tube is fixedly mounted on the rear side of the lower seat mounting shell, and the wheels are mounted on the lower ends of the front leg tube and the rear leg tube.

The use process of the present invention is as follows:

1. To close the car: lift the handle 8 upward by hand (rotate it from the horizontal state to the vertical state), at this time, the bottom surface (pressing part 33) of the handle 8 presses the raised part 13 of the closing pressure block 6, and the car is closed The pressure block 6 uses the pressure block plug 12 as the hinge shaft to move the inner end of the vehicle receiving pressure block 6 upward, and at the same time, the sliding column 15 on the upper link rod 7 moves upward along the sliding hole 14, thereby driving the upper link rod 7 upward. Movement; when the upper link rod 7 moves upward, it will pull the lower link rod 20, and when the lower link rod 20 moves upward, the first slope of the lower link rod 20 slides in the chute of the locking member Slope), cooperate with the second slope, under the action of the restoring force of the first spring 26, through the reaction force of the slope, the locking member 19 is moved backward, and the clamping column 24 is separated from the clamping hole 35 of the clamping fixed seat 28. , so that it can be unlocked, the front leg tube 4 can be rotated in the direction A, and the front leg tube 4 can be moved closer to the rear leg tube 27, so as to realize the function of closing the car, see Figures 7-11.

The external force exerted on the handle 8 is cancelled, the upper link rod 7 returns to its original position under the action of the restoring force of the second spring 29 , and at the same time, the first inclined surface of the lower link rod 20 moves downward along the inclined groove of the locking member 19 , so that the locking member 19 moves forward, at this time, the first spring 26 is stretched, and the clamping post 24 abuts on the engaging and fixing seat 28 .

2. Show car: separate the front leg tube 4 and the rear leg tube 27, that is, rotate the front leg tube 4 in a clockwise direction until the clamping hole 35 on the locking seat 28 corresponds to the clamping column 24 of the locking member 19, and the clamping column 24 extends Insert into the card hole 35, press the front leg tube 4, and lock the front leg tube to lock the platform, so as to realize the function of displaying the car.

Claims (10)

1. A reversible seat 360° rotating retractable structure is characterized in that: it comprises an unlocking operating member, a middle seat and an installation shaft, the middle seat comprises an upper seat and a lower seat, and the upper seat and the seat can surround the installation shaft Synchronous rotation, the lower seat is fixed on the installation shaft and has a locking part for locking the front leg tube, the upper seat includes a pair of upper unlocking components, the lower seat includes a pair of lower unlocking components, the pair of upper unlocking components and the pair of lower unlocking assemblies are respectively arranged axially symmetrically with respect to the installation shafts. When the upper seat is rotated to the seat facing forward or backward position, the upper unlocking assembly is connected to the lower unlocking assembly, and the upper unlocking assembly is linked by operating the unlocking operating member. and the lower unlocking component, and then the locking component is linked to unlock the front leg tube to realize the closing of the car. 2. The 360° rotatable retractable seat structure according to claim 1, wherein the upper unlocking assembly and the lower unlocking assembly are provided with a vertical connection between the upper unlocking assembly and the lower unlocking assembly and in a circumferential direction The upper locking structure allows disengagement, and the unlocking operation member can move upward in conjunction with the upper unlocking assembly and the lower unlocking assembly that are vertically connected, and at the same time, the upward movement of the lower unlocking assembly can cancel its restriction on the locking member. position and retract the locking member to unlock the foreleg. 3 . The 360° rotating retractable structure of the reversible seat according to claim 2 , wherein the upper seat comprises an upper cover, and the upper cover is fixed on a vertically arranged U-shaped support pipe, and the The U-shaped support tube is rotatably mounted on the installation shaft, the upper end of the U-shaped support tube is used to install the seat, the upper end of the upper unlocking assembly is connected to the upper cover, and the lower end passes through the U-shaped support downward. Tube. 4. The 360° rotating car retracting structure of the reversible seat according to claim 3, wherein the upper unlocking assembly is mainly composed of a retracting pressure block and an upper linkage rod, and the unlocking operating member is movably installed on the The upper cover is provided with a pressing part, the U-shaped support tube is provided with an opening for the upper link rod to pass through, the retracting pressure block is hinged on the upper cover, and its outer end is matched with the pressing part , the inner end is slidably connected with the upper end of the upper linkage rod; the lower unlocking assembly includes a lower linkage rod, and the lower end of the lower linkage rod is matched with the locking member through the inclined surface, and the locking member uses a stretched first The restoring force of the elastic piece gradually retracts along the inclined plane when the lower link rod moves upward. 5 . The 360° rotating retractable structure for the reversible seat according to claim 4 , wherein the unlocking operation member is a handle, and both ends of the handle are hinged on both sides of the upper cover, and the pressing The upper part is the bottom surface of the end of the handle, on which a notch-shaped bayonet is opened. The outer end of the car-receiving pressure block is a raised part, and the raised part is located in the bayonet, and the raised part can be raised by turning the handle. The inner end of the closing pressure block moves up; the inner end of the closing pressure block is provided with an elongated sliding hole, and the upper link rod The upper end is provided with a sliding column, which is located in the sliding hole and can drive the upper linkage rod to move upward along with the upward movement of the inner end of the receiving pressure block along the sliding hole. A second elastic piece is arranged between the upper covers to cancel the external force exerted on the handle, and the upper linkage rod can return to its original position under the action of the restoring force of the second elastic piece. 6 . The 360° rotating retractable seat structure according to claim 5 , wherein the engaging structure is located between the upper end of the lower link rod and the lower end of the upper link rod, and it comprises: 6 . The T-shaped card slot located at the lower end of the upper link rod and the T-shaped clip head located at the upper end of the lower link rod, the T-shaped clip head is located in the T-shaped card slot so that the upper link rod and the lower link rod are connected. The moving rod is connected vertically, and rotates with the upper connecting rod, and the T-shaped slot is separated from the T-shaped head. 7 . The 360° rotating retractable seat structure according to claim 6 , wherein the lower seat comprises a mounting shell, the upper end of the mounting shell has an annular guide groove, and the upper connecting The moving rod moves along the guide groove, the lower link rod and the locking part are located in the lower part of the installation housing, and the T-shaped clip of the lower link rod is located in the guide groove. 8 . The 360° rotating retractable seat structure according to claim 7 , wherein the lower end of the lower linkage rod is a first inclined surface, and the locking member is mainly composed of a block body and a front end thereof. 9 . The block body is provided with an inclined groove, the inclined groove has a second inclined surface matched with the first inclined surface, and the first elastic member is provided at the rear end of the locking member and the installation housing. between. 9 . The 360° rotatable retractable seat structure according to claim 8 , wherein the front side of the installation shell is rotated to install the front leg pipe, and the rear side of the installation shell is fixedly installed with the rear leg pipe, 10 . The locking column of the locking member locks the front leg tube by restraining its rotation against the front leg tube. 10. A child carrier, comprising the reversible seat 360° rotating retractable structure according to any one of claims 1 to 9.

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