WO2022252448A1

WO2022252448A1 - Folding support leg retraction mechanism

Info

Publication number: WO2022252448A1
Application number: PCT/CN2021/120534
Authority: WO
Inventors: 程飞; 曹文勇; 管晨彬
Original assignee: 宁波宝贝第一母婴用品有限公司
Priority date: 2021-06-04
Filing date: 2021-09-26
Publication date: 2022-12-08
Also published as: CN113246821A; CN113246821B

Abstract

A folding support leg retraction mechanism, comprising a base (1) and a support leg (2), wherein a sliding assembly (3) is arranged on the base (1), and the sliding assembly (3) comprises a connector and a limiting portion (4), the connector being slidably connected to the base (1), and the limiting portion (4) limiting the movement of the support leg (2) such that the support provided by the support leg (2) is more stable. The support leg (2) can move again by means of a reset assembly (6), and the support leg (2) is thus reset; and the action of the reset assembly (6) is achieved by means of the rotation of the support leg (2).

Description

A retractable mechanism for folding supporting legs

technical field

The invention relates to the technical field of child safety seats, in particular to a retraction mechanism for folding support legs.

Background technique

A safety seat is a seat specially designed for children of different weights (or age groups), installed in a car, and can effectively improve the safety of children in a car; it is a seat that can be fixed to a motor vehicle and has an ISOFIX interface. A child safety protection system composed of seat belt components or flexible parts, adjustment mechanisms, accessories, etc. In the event of a car collision or sudden deceleration, it can reduce the impact on the child and limit the child's body movement so as to reduce the injury to them;

In the prior art, to support the safety seat through the support legs, it is necessary to set a limit mechanism for the support legs to prevent the support legs from sliding during use, causing dangerous situations. However, when the general limit mechanism is unlocked, The position-limiting mechanism needs to be manually unlocked before the supporting legs can be rotated and stored. The supporting legs and the position-limiting mechanism are relatively independent, which makes the process of storing the supporting legs more complicated.

Contents of the invention

In view of the deficiencies in the prior art, the purpose of the present invention is to provide a retracting mechanism for folding support legs, which facilitates the reduction of steps in the storage process of the support legs.

In order to achieve the above object, the present invention provides the following technical solution: a folding support leg retraction mechanism, including a base and a support leg, the base is provided with a sliding assembly, the sliding assembly includes a connecting piece and a limiting part, the The connecting piece is slidably connected to the base, and the limiting part is used to limit the sliding of the connecting piece;

A rotating part and a reset assembly are arranged between the supporting leg and the connecting part, the supporting leg is connected to the connecting part through the rotating part, and the supporting leg is turned toward the connecting part so that The reset component releases the limitation of the limiting part.

As a further improvement of the present invention, the connecting piece includes an inner slide rail and an outer slide rail, the outer slide rail is fixedly connected to the base, and the limiting part is located between the inner slide rail and the outer slide rail. In between, an upper casing is fixedly connected above the inner slide rail, a lower casing is fixedly connected below the inner slide rail, and the supporting legs are rotatably connected to the lower casing through the rotating part.

As a further improvement of the present invention, a positioning portion is provided between the upper housing and the outer sliding rail, and the positioning portion is used to limit the sliding distance of the inner sliding rail.

As a further improvement of the present invention, the positioning part includes a positioning hole opened on the upper casing, a locking member is fixedly connected to the positioning hole, a slide groove is opened on the outer slide rail, and the lock The stopper fits with the chute.

As a further improvement of the present invention, the limiting part includes a rotating rod, the rotating rod is rotatably connected to the lower housing, and several limiting blocks are fixedly connected to the rotating rod, and the upper housing is provided with There are two oppositely arranged first through holes, the first through holes correspond to the limit blocks one by one, and two oppositely arranged second through holes are opened on the outer slide rail, and the second through holes The holes are in one-to-one correspondence with the first through holes and communicate with each other. Two opposite third through holes are opened on the inner slide rail, and the third through holes correspond to the second through holes in a one-to-one manner. , and communicate with each other, the limiting block includes a protrusion, and an elastic member is arranged between the limiting blocks, so that the protrusion passes through the corresponding third through hole and the first through hole, And snap into the corresponding second through hole.

As a further improvement of the present invention, the rotating part includes a rotating shaft, the reset assembly includes a connecting part and two oppositely arranged cams, the supporting legs are fixedly connected between the two cams, and the rotating shaft and The cams are rotatably connected, and the two ends of the rotating shaft respectively extend the corresponding cams, and when the supporting legs rotate toward the side of the lower housing, the cams pass through the connecting parts, so that The limiting block rotates and disengages from the corresponding second through hole.

As a further improvement of the present invention, the connecting part includes a cross bar and a slider, the cross bar is fixedly connected between the two limit blocks, the slider is slidably connected in the lower housing, and the The slider includes an inclined plane and two opposite arc-shaped ends, the arc-shaped ends correspond to the cams one by one and abut against the cam, and the inclined plane abuts against the cross bar.

As a further improvement of the present invention, the slider is provided with two opposite grooves, and the elastic member passes through the grooves.

As a further improvement of the present invention, a clamping slot is provided at the bottom of the base, and the clamping slot is used to place the supporting legs, and a clamping part is provided in the clamping slot, and the clamping part is used to clamp the Support the legs.

As a further improvement of the present invention, the clamping portion includes two ribs, and the ribs are respectively provided on the inner walls of the opposite sides of the slot.

As a further improvement of the present invention, the material of the inner slide rail and the outer slide rail is metal.

Beneficial effects of the present invention: the present invention is provided with a limiting part, a rotating part and a reset assembly, and the limiting part restricts the movement of the supporting leg, making the support of the supporting leg more stable, and the supporting leg can be moved again through the reset assembly, and the The support legs are reset, and the action of the reset assembly is realized by the rotation of the support legs. The operation is convenient, so that when the operator stores the support legs, he only needs to directly rotate the support legs, and there is no need to additionally unlock the support legs. The relative linkage between the supporting leg and the limit part reduces the steps of unlocking the supporting leg first, making the storage of the supporting leg faster. The card slot is used to place the supporting leg, which is convenient for the storage of the supporting leg and realizes the complete hiding of the supporting leg. Can reduce storage space.

Description of drawings

Fig. 1 is a schematic diagram of an explosion structure of the present invention;

Fig. 2 is a structural schematic diagram of the installation of the inner slide rail and the lower casing of the present invention;

Fig. 3 is a schematic view of the bottom structure of the base of the present invention;

Fig. 4 is a schematic diagram of an enlarged structure at A in Fig. 2 of the present invention.

Reference signs: 1, base; 2, supporting legs; 3, sliding assembly; 31, inner slide rail; 311, upper shell; 312, lower shell; 32, outer slide rail; 4, limit part; 41, Rotating rod; 42, limit block; 43, first through hole; 44, second through hole; 45, elastic member; 46, third through hole; 5, rotating part; 51, rotating shaft; 6, reset assembly; 61. Connecting part; 611. Crossbar; 612. Slider; 613. Groove; 62. Cam; 7. Positioning part; 71. Positioning hole; 72. Locking piece; 73. Slide groove; 8. Card slot; 9. Convex ribs.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. Wherein the same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "bottom" and "top "Face", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.

Referring to Fig. 1 to Fig. 4, a folding support leg retraction mechanism of this embodiment includes a base 1 and a support leg 2, a sliding assembly 3 is arranged on the base 1, and the sliding assembly 3 includes a connecting piece and a limiting part 4, The connecting piece is slidably connected with the base 1, and the limiting part 4 is used to limit the sliding of the connecting piece;

A rotating part 5 and a reset assembly 6 are arranged between the supporting leg 2 and the connected part, the supporting leg 2 is connected to the connecting part through the rotating part 5, and the supporting leg 2 is rotated toward the connecting part so that the reset assembly 6 releases the limit part 4, the connector includes an inner slide rail 31 and an outer slide rail 32, the outer slide rail 32 is fixedly connected to the base 1, the limit part 4 is located between the inner slide rail 31 and the outer slide rail 32, and above the inner slide rail 31 An upper housing 311 is fixedly connected, and a lower housing 312 is fixedly connected below the inner slide rail 31. The supporting legs 2 are rotationally connected with the lower housing 312 through the rotating part 5 to realize the support of the supporting legs 2 to the base 1, and the supporting legs 2 During the process of supporting the base 1, the stopper 4 restricts the movement of the support leg 2, making the support of the support leg 2 more stable, and the support leg 2 can be moved again through the reset component 6, and the support leg 2 is reset , and the action of the reset assembly 6 is realized by the rotation of the support leg 2, which is easy to operate, so that when the operator stores the support leg 2, it can be realized by directly rotating the support leg 2 without additionally unlocking the support leg 2. The relative linkage between the supporting leg 2 and the limiting part 4 reduces the step of unlocking the supporting leg 2 first, making the storage of the supporting leg 2 faster; the limiting part 4 includes a rotating rod 41, which is connected with the lower casing 312 rotation connection, the rotating rod 41 is fixedly connected with several limit blocks 42, two limit blocks 42 are provided, and are arranged oppositely, and two first through holes 43 oppositely arranged are opened on the upper housing 311, the second A through hole 43 is in one-to-one correspondence with the limit block 42, and the outer slide rail 32 is provided with two opposite second through holes 44, and the second through hole 44 is in one-to-one correspondence with the first through hole 43 and communicates with each other. The inner slide rail 31 is provided with two oppositely arranged third through holes 46 , the third through holes 46 correspond to the second through holes 44 one by one, and communicate with each other. Open the first waist-shaped hole to meet the rotation requirements of the stop block 42, so that the convex part can break away from the second through hole 44, and an elastic member 45 is arranged between the two stop blocks 42, and the elastic member 45 can be set as a spring. The rotating rod 41 passes through the spring, and due to the restoring force of the spring, the convex part is located in the first through hole 43. During the sliding process of the inner slide rail 31, the convex part is against the inner side of the outer sliding rail 32, and then the restoring force of the spring The protrusion is snapped into the second through hole 44, thereby restricting the sliding of the inner slide rail 31, so that the support rod cannot move, improving safety, so that the protrusion passes through the corresponding third through hole 46 and the first through hole 43, and snap into the corresponding second through hole 44. The rotating part 5 includes a rotating shaft 51, and the reset assembly 6 includes a connecting part 61 and two oppositely arranged cams 62. The arrangement of the cams 62 allows the supporting leg 2 to limit the range of rotation of the supporting leg 2 during the rotation process. The top of 62 is a plane, because the gap between the upper housing 311 and the lower housing 312 is small, it can limit the rotation of the support leg 2 away from the lower housing 312 side, and can be on the upper housing 311 and the inner housing 31. A second waist-shaped hole is provided to meet the rotation requirement of the support leg 2 towards the side of the lower housing 312. The support leg 2 is fixedly connected between the two cams 62, the rotation shaft 51 is connected to the cam 62 in rotation, and the rotation shaft 51 Corresponding cams 62 are respectively extended from both ends. When the supporting leg 2 rotates towards the side of the lower housing 312, the cams 62 pass through the connecting portion 61. The connecting portion 61 includes a cross bar 611 and a slider 612. The cross bar 611 is fixedly connected to the two sides. Between the two limiting blocks 42, the sliding block 612 is slidably connected in the lower housing 312. The sliding block 612 includes an inclined surface and two opposite arc-shaped ends. The rod 611 is in contact with each other so that the stop block 42 rotates and breaks away from the corresponding second through hole 44. When the support leg 2 rotates, the cam 62 rotates and pushes the slider 612 to move, so that the cross bar 611 is pushed by the inclined plane and rotates around the The rod 41 rotates as the central axis, so that the convex part is separated from the second through hole 44, so that the inner slide rail 31 can slide again, and the process for the operator to receive the support leg 2 is very convenient; The slot 8 is used to place the support leg 2, which is convenient for the storage of the support leg 2 and can reduce the storage space. The clamping part is arranged in the slot 8, and the clamping part is used to clamp the support leg 2 to prevent the weight of the support leg 2 from As a result, the supporting leg 2 is disengaged from the slot 8, resulting in damage to the supporting leg 2. The clamping part includes two protruding ribs 9, and protruding ribs 9 are respectively provided on the inner walls of the opposite sides of the slot 8, and the supporting legs 2 are clamped by the elastic deformation of the protruding ribs 9, which is convenient for the operator to remove the supporting legs 2. put.

Referring to FIG. 1 , FIG. 2 and FIG. 4 , a positioning portion 7 is provided between the upper housing 311 and the outer slide rail 32 , and the positioning portion 7 is used to limit the sliding distance of the inner slide rail 31 . The positioning part 7 includes a positioning hole 71 provided on the upper casing 311, a locking member 72 is fixedly connected to the positioning hole 71, and a slide groove 73 is provided on the outer slide rail 32. When the locking member 72 pushes against the sliding groove 73, At one end, the convex part of the limit block 42 just snaps into the person's through hole, preventing the limit block 42 from moving too far and failing to snap into the second through hole 44, and it is convenient for the operator to move the support For the leg 2, the locking piece 72 is adapted to the slide groove 73, and the locking piece 72 can be selected as a limit screw or a limit stud.

Referring to Fig. 1, Fig. 2 and Fig. 4, there are two oppositely arranged grooves 613 on the slider 612, the elastic member 45 passes through the grooves 613, and the setting of the grooves 613 can avoid the deviation when the spring is installed , it can prevent the slider 612 from pushing the crossbar 611 to rotate along the rotating rod 41, the situation that the protrusion cannot be disengaged from the second through hole 44 due to the small rotation distance, the material of the inner slide rail 31 and the outer slide rail 32 is metal , when an accident occurs, the supporting legs will be transmitted between the inner slide rail 31 and the outer slide rail 32 after being stressed, and the inner slide rail 31 will give an upward force to the outer slide rail 32. The setting of the metal material will increase the inner slide rail 31 and the stress intensity of outer slide rail 32.

Working principle: The operator disengages the supporting leg 2 from the card slot 8, and then moves the supporting leg 2 so that the inner slide rail 31 slides on the outer sliding rail 32, and when the stop screw is in contact with one end of the slide groove 73, the supporting leg is rotated 2. Implement the rotation of the side of the support leg 2 away from the lower housing 312, so that the convex part is inserted into the second through hole 44 through the first through hole 43 and the third through hole 46, and the sliding of the inner slide rail 31 is restricted, so that the support The legs 2 cannot be moved to increase safety. When the support legs 2 are stored, the support legs 2 are rotated so that the support legs 2 rotate toward the lower housing 312 side. At this time, the cam 62 rotates and pushes the slider 612 to move , so that the slider 612 pushes the cross bar 611 to rotate with the rotating rod 41 as the central axis, thereby driving the stop block 42 to rotate, so that the convex part can be disengaged from the second through hole 44, so that the inner slide rail 31 can slide again, and then Put the support leg 2 into the card slot 8 to complete the storage.

The above are only preferred implementations of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention should also be regarded as the protection scope of the present invention.

Claims

A folding support leg retraction mechanism, comprising a base (1) and a support leg (2), characterized in that a sliding assembly (3) is provided on the base (1), and the sliding assembly (3) includes a connecting piece and A limiting part (4), the connecting piece is slidably connected to the base (1), and the limiting part (4) is used to limit the sliding of the connecting piece;

A rotating part (5) and a reset assembly (6) are arranged between the supporting leg (2) and the connecting part, and the supporting leg (2) is connected to the connecting part in rotation through the rotating part (5) , the supporting leg (2) rotates toward one side of the connecting piece so that the reset assembly (6) releases the limitation of the limiting part (4).
A retractable mechanism for folding support legs according to claim 1, characterized in that: the connecting piece comprises an inner slide rail (31) and an outer slide rail (32), and the outer slide rail (32) is fixedly connected to the On the base (1), the limit part (4) is located between the inner slide rail (31) and the outer slide rail (32), and an upper shell is fixedly connected above the inner slide rail (31) body (311), the lower housing (312) is fixedly connected under the inner slide rail (31), and the supporting leg (2) is rotationally connected with the lower housing (312) through the rotating part (5) .
The folding support leg retraction mechanism according to claim 2, characterized in that: a positioning part (7) is provided between the upper casing (311) and the outer slide rail (32), and the positioning part (7) is used to limit the sliding distance of the inner sliding rail (31).
A folding support leg retraction mechanism according to claim 3, characterized in that: the positioning part (7) includes a positioning hole (71) opened on the upper casing (311), and the positioning hole ( 71) is fixedly connected with a locking piece (72), and the outer slide rail (32) is provided with a sliding groove (73), and the locking piece (72) is adapted to the sliding groove (73).
A retractable mechanism for folding support legs according to claim 4, characterized in that: the limiting part (4) includes a rotating rod (41), and the rotating rod (41) is connected to the lower casing (312) connected by rotation, the rotating rod (41) is fixedly connected with several limit blocks (42), and the upper housing (311) is provided with two opposite first through holes (43). A through hole (43) is in one-to-one correspondence with the limiting block (42), and two second through holes (44) opposite to each other are provided on the outer slide rail (32), and the second through hole ( 44) Corresponding to the first through holes (43) one by one and communicating with each other, the inner slide rail (31) is provided with two opposite third through holes (46), the third through holes (46) are in one-to-one correspondence with the second through holes (44) and communicate with each other, the limit block (42) includes a convex part, and elastic pieces (45) are arranged between the limit blocks (42) so that the protrusion passes through the corresponding third through hole (46) and the first through hole (43), and snaps into the corresponding second through hole (44).
The folding support leg retraction mechanism according to claim 5, characterized in that: the rotating part (5) includes a rotating shaft (51), and the reset assembly (6) includes a connecting part (61) and two opposite The provided cam (62), the support leg (2) is fixedly connected between the two cams (62), the rotation shaft (51) is connected to the cam (62) in rotation, and the rotation shaft The corresponding cams (62) extend from both ends of (51), and when the supporting legs (2) turn toward the lower housing (312), the cams (62) pass through the connection part (61), so that the limit block (42) rotates and disengages from the corresponding second through hole (44).
A folding support leg retraction mechanism according to claim 6, characterized in that: the connecting part (61) includes a cross bar (611) and a slider (612), and the cross bar (611) is fixedly connected to two Between the two limiting blocks (42), the slider (612) is slidably connected in the lower housing (312), the slider (612) includes a slope and two opposite arc-shaped ends, The arc-shaped ends correspond to the cams (62) one by one and are in contact with each other, and the slope is in contact with the cross bar (611).
A retractable mechanism for folding support legs according to claim 7, characterized in that: two opposite grooves (613) are opened on the slider (612), and the elastic member (45) passes through the the groove (613).
A retractable mechanism for folding supporting legs according to claim 7, characterized in that: the bottom of the base (1) is provided with a card slot (8), and the card slot (8) is used to place the supporting legs (2 ), a clamping part is arranged in the clamping groove (8), and the clamping part is used for clamping the support leg (2).
The folding support leg retraction mechanism according to claim 9, characterized in that: the clamping part comprises two convex ribs (9), and the inner walls of the opposite sides of the clamping groove (8) are respectively provided with Describe convex tendon (9).
The retractable mechanism for folding supporting legs according to claim 9, wherein the material of the inner sliding rail and the outer sliding rail is metal.