CN216139882U

CN216139882U - Supporting leg and child safety seat

Info

Publication number: CN216139882U
Application number: CN202121825865.3U
Authority: CN
Inventors: 冯博
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2022-03-29
Anticipated expiration: 2031-08-06

Abstract

The utility model discloses a supporting leg and a child safety seat, wherein the supporting leg comprises an outer tube, an inner tube arranged in the outer tube in a sliding manner along the vertical direction, and a one-way locking device arranged between the outer tube and the inner tube and used for limiting the shortening of the supporting leg, wherein the one-way locking device comprises a plurality of one-way tooth grooves sequentially arranged on the inner tube along the length extension direction of the inner tube and a locking piece which can be rotatably arranged on the outer tube, the locking piece is provided with a lock tongue, the lock tongue is matched with the one-way tooth grooves, and the lock tongue can be respectively clamped into each one-way tooth groove or can be separated from the one-way tooth groove. The locking mode of this supporting leg makes the span of the length adjustment of supporting leg less, and the supporting leg can realize infinitely variable control for this children's safety seat's suitability is wider, makes things convenient for children's safety seat's use. Moreover, the one-way tooth socket is arranged on the inner pipe, and the locking piece is arranged on the outer pipe, so that the size of the supporting leg is small, the occupied space size is small, and the child safety seat is convenient to mount.

Description

Supporting leg and child safety seat

Technical Field

The utility model relates to the technical field of children products, in particular to a supporting leg and a child safety seat.

Background

To ensure the safety of a child riding in a vehicle, children are recommended to use child safety restraint devices while riding in the vehicle. Currently, the main child safety restraint devices are child safety seats for securing to vehicles, and there are various types of child safety seats, such as infant seats, infant carriers, and child safety seats, depending on the age of the child seated therein and the manner of use. For a long time, various types of child safety seats are usually provided with supporting legs connected to a seat body of the child safety seat to play a supporting role, so that the child safety seat is prevented from falling or toppling over in the driving process.

At present, the supporting legs that set up among the child safety seat mostly adopt extending structure to can adjust the length of supporting leg, in order being applicable to the vehicle of difference. In order to fix the telescopic support leg at a certain length, the length of the support leg is usually locked by a locking device.

In the prior art, a locking device is generally that a lock pin is movably arranged on one leg constituting a supporting leg, a lock hole is arranged on the other leg constituting the supporting leg, when the lock pin is inserted into the lock hole, the length of the supporting leg is fixed, and when the lock pin is disengaged from the lock hole, the length of the supporting leg can be adjusted. In this locking device, although a plurality of locking holes may be provided so that the supporting leg can be locked at a plurality of length positions, the interval distance between the locking hole and the locking hole is relatively large in consideration of the strength of the supporting leg, so that the span of length adjustment of the supporting leg is also relatively large.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a supporting leg, wherein the length adjustment span of the supporting leg is smaller and is similar to stepless adjustment.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a supporting leg, includes the outer tube, can set up with sliding along upper and lower direction inner tube in the outer tube, the supporting leg is still including setting up the outer tube with be used for the restriction between the inner tube one-way locking device that the supporting leg shortened, one-way locking device includes the edge the length extending direction of inner tube sets up in proper order a plurality of one-way tooth's socket on the inner tube sets up with can rotating on the outer tube locking piece, the locking piece has the spring bolt, the spring bolt with one-way tooth's socket phase-match, the spring bolt can block respectively each in the one-way tooth's socket or follow deviate from in the one-way tooth's socket.

Preferably, the one-way locking device has a locking state and an unlocking state, when the one-way locking device is in the locking state, the bolt is clamped into one-way tooth groove, and when the one-way locking device is in the unlocking state, the bolt is disengaged from the one-way tooth groove.

Further, the supporting leg still including being used for ordering about the unlocking device of one-way locking device unblock under the locking state, unlocking device includes unlock button and driving piece, unlock button with the driving piece homoenergetic sets up with sliding on the outer tube, the driving piece respectively with unlock button with the locking piece cooperatees.

Furthermore, the unlock button can be followed upper and lower direction and set up with sliding on the outer tube, just the unlock button can also be relative along the horizontal direction the outer tube slides, works as the unlock button is relative along the horizontal direction the outer tube slides when, the slip direction of driving piece with the slip direction of unlock button is the same.

When the unlocking button slides upwards or downwards relative to the outer pipe, the unlocking button is separated from the matching of the limiting part, and the limiting part is far away from the path of the unlocking button sliding relative to the outer pipe along the horizontal direction.

Furthermore, an end face of the unlocking button is abutted to an end face of the driving piece to establish matching, and the end faces of the unlocking button and the driving piece which are abutted to each other are straight faces.

Furthermore, the locking piece is provided with a matching part which is abutted and matched with the other end surface of the driving piece.

Furthermore, the upper end of outer tube and children's safety seat's seat body are connected, the lower tip of inner tube can support and locate the vehicle floor, the fixed fixing base that is provided with on the lower tip of outer tube, the locking piece unlock button with the driving piece all sets up in the fixing base, be provided with on the unlock button and press the splenium, be provided with the window on the fixing base, press the splenium follow stretch out in the window the outside of fixing base, one-way tooth's socket has last lateral wall and lower lateral wall, it sets up to go up the lateral wall slope, down the lateral wall level set up, the spring bolt have with go up lateral wall complex inclined plane, work as when one-way locking device is in lock state, go up the lateral wall with the inclined plane offsets and establishes the cooperation.

Furthermore, the supporting leg further comprises an elastic assembly for driving the locking piece, the unlocking button and the driving piece to reset from the unlocking state to the locking state.

The utility model also provides a child safety seat having a support leg as claimed in any one of the preceding claims.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the supporting leg realizes the unidirectional locking of the outer tube and the inner tube in a mode of matching the lock tongue with the unidirectional tooth groove, the locking mode ensures that the length adjustment span of the supporting leg is smaller, and the supporting leg can realize stepless adjustment, so that the child safety seat has wider applicability and is convenient to use. Moreover, the one-way tooth socket is arranged on the inner pipe, and the locking piece is arranged on the outer pipe, so that the size of the supporting leg is small, the occupied space size is small, and the child safety seat is convenient to install and use.

Drawings

FIG. 1 is a schematic front view of the support leg of the present embodiment (with the one-way locking mechanism in a locked state);

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1 (with the one-way locking mechanism in a locked condition);

FIG. 3 is a rear view of the support leg of the present embodiment (with the one-way locking mechanism in a locked condition);

FIG. 4 is an enlarged view of a portion of FIG. 2 at A;

FIG. 5 is a schematic elevational view of the support leg of the present embodiment (during extension of the support leg);

FIG. 6 is a schematic cross-sectional view taken along line A-A of FIG. 5 (during elongation of the support leg);

FIG. 7 is a rear view of the support leg of the present embodiment (during extension of the support leg);

FIG. 8 is an enlarged view of a portion of FIG. 6 at A;

FIG. 9 is a rear view of the support leg of the present embodiment (with the one-way locking mechanism in an unlocked state);

FIG. 10 is a schematic cross-sectional view taken along line A-A of FIG. 9 (with the one-way locking device in an unlocked state);

FIG. 11 is an enlarged view of a portion of FIG. 10 at A;

FIG. 12 is a partial structural view of the support leg of the present embodiment (with the fixing base removed);

FIG. 13 is a view showing the structure of the supporting leg according to the present embodiment in the mounted position of the locking member, the unlocking button and the driving member;

FIG. 14 is a second schematic structural view showing the mounted positions of the locking member, the unlocking button and the driving member of the support leg according to the present embodiment.

Wherein: 1. an outer tube; 11. a fixed seat; 111. a limiting part; 112. a window; 2. an inner tube; 21. a unidirectional tooth slot; 211. an upper sidewall; 212. a lower sidewall; 3. a locking member; 31. a latch bolt; 311. a bevel; 32. a fitting portion; 41. an unlock button; 411. a pressing part; 42. a drive member; 51. a second elastic member; 52. and a third elastic member.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the specific embodiments.

Child safety seats typically include a seat body and support legs disposed at the bottom of the seat body.

As shown in fig. 1 to 12, the support leg of the present invention includes an outer tube 1 and an inner tube 2 both extending in an up-down direction, the outer tube 1 having a lumen extending in a lengthwise direction thereof, the inner tube 2 being partially located in the lumen of the outer tube 1 and slidably disposed in the lengthwise extending direction of the lumen. The upper end of one of the two parts of the outer tube 1 and the inner tube 2 is connected to the bottom of the seat body 1, and the lower end of the other part is abutted against the bottom plate of the automobile when in use. In this embodiment, the upper end of the outer tube 1 is connected to the seat body 1, and the lower end of the inner tube 2 abuts against the floor of the vehicle when in use.

The support leg further includes a one-way locking device having locked and unlocked states. When the unidirectional locking device is in a locking state, the relative positions of the outer pipe 1 and the inner pipe 2 are fixed in a unidirectional mode, the inner pipe 2 can only slide in the direction of extending out of the outer pipe 1 and cannot slide in the direction of retracting into the outer pipe 1, and therefore the supporting legs can only extend and cannot be shortened. The supporting leg can still extend when the one-way locking device is in a locking state, so that the child safety seat is convenient to mount, namely the length of the supporting leg does not need to be adjusted by experience before mounting, and only the inner tube 2 needs to extend out towards the direction of the bottom plate of the automobile when mounting; and the supporting leg of the one-way locking device can not shorten under the locking state, so that when the automobile is in a collision accident or emergency brake, the supporting leg can ensure that the supporting leg can form a good supporting effect on the seat body, and the personal injury to the seated child can be reduced. When the one-way locking device is in an unlocking state, the outer pipe 1 and the inner pipe 2 can freely slide relatively, namely, the inner pipe 2 can slide in the direction of extending out of the outer pipe 1 and can also slide in the direction of retracting into the outer pipe 1, so that the length of the supporting leg can be freely adjusted.

The unidirectional locking device comprises a plurality of unidirectional tooth grooves 21 sequentially arranged on the inner pipe 2 along the length extension direction of the inner pipe 2 and a locking piece 3 rotatably arranged on the outer pipe 1, wherein the locking piece 3 is provided with a locking tongue 31, the locking tongue 31 is matched with the unidirectional tooth grooves 21, and the locking tongue 31 can be respectively clamped into each unidirectional tooth groove 21 or pulled out of each unidirectional tooth groove 21. When the one-way locking device is in a locking state, the bolt 31 is clamped into one of the one-way tooth grooves 21, as shown in fig. 2 and 4; when the one-way locking means is in the unlocked state, the latch tongue 31 is disengaged from the one-way spline 21, as shown in fig. 10 and 11.

The one-way slot 21 has an upper side wall 211 and a lower side wall 212 which are oppositely arranged, the upper side wall 211 is obliquely arranged, the latch bolt 31 has an inclined surface 311 matched with the upper side wall 211, and the lower side wall 212 is horizontally arranged. When the one-way locking device is in a locked state, the latch bolt 31 is clamped between the upper side wall 211 and the lower side wall 212, the upper side wall 211 is matched with the inclined surface 311 of the latch bolt 31, and the lower side wall 212 is blocked below the latch bolt 31, as shown in fig. 2 and 4. Thus, the inner tube 2 cannot slide upward due to the blockage of the lower sidewall 212. When the inner tube 2 is pulled downward, the locking member 3 is driven to rotate relative to the outer tube 1 by the engagement of the upper sidewall 211 with the inclined surface 311, so that the latch tongue 31 is released from the one-way slot 21, as shown in fig. 6 and 8.

The supporting leg still includes the unlocking means that is used for driving one-way locking device to unblock under the locking state, and is concrete, and unlocking means includes unblock button 41 and driving piece 42, and unblock button 41 and driving piece 42 all can set up on outer tube 1 slidably, and driving piece 42 cooperatees with unblock button 41 and locking piece 3 respectively.

In this embodiment, the lower end of the outer tube 1 is fixedly provided with a fixing seat 11, and the locking member 3, the unlocking button 41 and the driving member 42 are all disposed in the fixing seat 11. The unlocking button 41 is provided with a pressing portion 411, the fixing base 11 is provided with a window 112, and the pressing portion 411 extends out of the window 112 to the outside of the fixing base 11, so that the unlocking button can be operated by a person.

The unlock button 41 is provided on the outer tube 1 so as to be slidable in the up-down direction, and the unlock button 41 is also slidable in the horizontal direction with respect to the outer tube 1. When the unidirectional locking device is in a locked state, after the unlocking button 41 is operated to slide upwards or downwards for a certain distance relative to the outer tube 1, the unlocking button 41 can slide along the horizontal direction, when the unlocking button 41 slides along the horizontal direction, the driving piece 42 can be driven to slide along the direction which is the same as the sliding direction of the unlocking button 41 through the matching of the driving piece 42 and the unlocking button 41, when the driving piece 42 slides, the locking piece 3 can be driven to rotate relative to the outer tube 1 through the matching of the driving piece 42 and the locking piece 3, so that the bolt 31 of the locking piece 3 is disengaged from the unidirectional tooth groove 21, and the unidirectional locking device is unlocked.

Specifically, the fixing seat 11 is provided with a limiting portion 111, when the one-way locking device is in a locking state, the unlocking button 41 abuts against the limiting portion 11 to be matched, the limiting portion 111 blocks a path along which the unlocking button 41 slides relative to the outer tube 1 in the horizontal direction, and at this time, the unlocking button 41 cannot slide along the horizontal direction and can only slide upwards or downwards. When the unlocking button 41 slides upwards or downwards relative to the outer tube 1 to disengage the unlocking button 41 from the limiting part 111, the limiting part 111 is far away from the path of the unlocking button 41 sliding relative to the outer tube 1 along the horizontal direction, and at the moment, the unlocking button 41 can slide along the horizontal direction. In this embodiment, when the unlocking button 41 slides upward relative to the fixing base 11 when the one-way locking device is in the locked state, the engagement between the unlocking button 41 and the limiting portion 111 can be disengaged.

In this embodiment, as shown in fig. 13 and 14, an end surface of the unlocking button 41 abuts against and is matched with an end surface of the driving member 42, and end surfaces of the unlocking button 41 and the driving member 42 which abut against each other are straight surfaces.

As shown in fig. 13 and 14, the locking member 3 is provided with an engaging portion 32, and the engaging portion 32 is engaged with the other end surface of the driver 42. Specifically, the fitting portion 32 may be a cylinder provided on the locking member 3.

The support leg further comprises a resilient assembly for urging the locking member 3, the unlocking button 41 and the actuating member 42 to return from the unlocked to the locked condition.

Specifically, the elastic assembly includes a first elastic member, two end portions of the first elastic member are respectively disposed on the fixing base 11 and the locking member 3, and an elastic force of the first elastic member is used for driving the locking member 3 to rotate and reset in a direction in which the locking tongue 31 is clamped into the one-way tooth groove 21. In this embodiment, the first elastic member is a torsion spring.

The elastic assembly further includes a second elastic member 51, two end portions of the second elastic member 51 are respectively disposed on the fixing base 11 and the unlocking button 41, and an elastic force of the second elastic member 51 is used for driving the unlocking button 41 to slide downwards relative to the fixing base 11 for resetting. In this embodiment, the second elastic member 51 is a compression spring.

The elastic assembly further includes a third elastic member 52, two end portions of the third elastic member 52 are respectively disposed on the fixing base 11 and the driving member 42, and an elastic force of the third elastic member 52 is used for driving the driving member 42 to reversely slide and reset along the horizontal direction relative to the fixing base 11. In this embodiment, the third elastic member 52 is a compression spring.

When the child safety seat is not used, most of the inner tube 2 is retracted into the outer tube 1, so that the occupied space size of the child safety seat is small, the one-way locking device is in a locking state at the moment, and the lock tongue 31 is clamped into the one-way tooth groove 21 at the lowest part, as shown in fig. 1-4.

When the child safety seat needs to be installed on an automobile seat for use, the seat body is placed on the automobile seat and connected with the automobile seat, the inner tube 2 is pulled downwards to slide towards the direction extending out of the outer tube 1, when the inner tube 2 slides downwards, the locking piece 3 can be driven to rotate relative to the fixing seat 11 through the matching of the upper side wall 211 and the inclined plane 311, so that the bolt 31 is separated from the one-way tooth groove 21, as shown in fig. 5-8, until the lower end part of the inner tube 2 is abutted to the bottom plate of the automobile, the locking piece 3 reversely rotates and resets relative to the fixing seat 11 under the action of the elastic force of the first elastic piece, so that the bolt 31 is inserted into different one-way tooth grooves 21, and the one-way locking device is locked again.

When the length of the supporting leg needs to be freely adjusted, the pressing part 411 of the unlocking button 41 is pressed to enable the unlocking button 41 to slide upwards relative to the fixing seat 11 until the unlocking button 41 is disengaged from the limiting part 111, the pressing part 411 is continuously pressed to enable the unlocking button 41 to slide along the horizontal direction, the driving piece 42 also slides along the direction the same as the sliding direction of the unlocking button 41, the locking piece 3 is driven to rotate relative to the outer tube 1, the bolt 31 of the locking piece 3 is enabled to be disengaged from the one-way tooth groove 21, the one-way locking device is unlocked, the inner tube 2 can freely slide relative to the outer tube 1, and therefore the length of the supporting leg is adjusted.

During the operation of the unlock button 41 to unlock the one-way lock device, the first, second, and third elastic members 51 and 53 are all elastically deformed. When supporting leg length is adjusted to required length, release the release button 41, the driving piece 42 resets along the reverse slip of horizontal direction promptly under the effect of the elastic force of third elastic component 52, it resets also to drive the release button 41 along the reverse slip of horizontal direction, when the back that puts in place of driving piece 42 reverse slip, the release button 41 resets under the effect of the elastic force of second elastic component 51 that slides downwards, in the in-process that the driving piece 42 reverse slip resets, locking piece 3 resets relative to fixing base 11 reverse rotation under the effect of the elastic force of first elastic component, until one-way locking device is in the locking condition again.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a supporting leg, includes the outer tube, can set up along upper and lower direction with sliding inner tube in the outer tube which characterized in that: the supporting leg is still including setting up the outer tube with be used for the restriction between the inner tube one-way locking device that the supporting leg shortened, one-way locking device includes the edge the length extending direction order of inner tube sets up a plurality of one-way tooth's socket on the inner tube with can set up with rotating locking piece on the outer tube, the locking piece has the spring bolt, the spring bolt with one-way tooth's socket phase-match, the spring bolt can block into each respectively in the one-way tooth's socket or follow deviate from in the one-way tooth's socket.

2. The support leg according to claim 1, wherein: the one-way locking device has a locking state and an unlocking state, when the one-way locking device is in the locking state, the spring bolt is clamped into one-way tooth groove, and when the one-way locking device is in the unlocking state, the spring bolt is separated from the one-way tooth groove.

3. The support leg according to claim 2, wherein: the supporting leg still including being used for ordering about the unlocking device of one-way locking device unblock under the locking state, unlocking device includes unlock button and driving piece, unlock button with the driving piece homoenergetic sets up with sliding on the outer tube, the driving piece respectively with unlock button with the locking piece cooperatees.

4. The support leg according to claim 3, wherein: the unlocking button can be arranged on the outer tube in a sliding mode in the up-down direction, the unlocking button can also be arranged on the outer tube in a sliding mode in the horizontal direction, and when the unlocking button is arranged on the outer tube in the sliding mode in the horizontal direction, the sliding direction of the driving piece is the same as the sliding direction of the unlocking button.

5. The support leg according to claim 4, wherein: the outer tube is provided with a limiting portion, when the one-way locking device is in a locking state, the unlocking button abuts against the limiting portion to be matched, the limiting portion blocks the unlocking button to be opposite to the outer tube in the horizontal direction in a sliding path, when the unlocking button slides upwards or downwards relative to the outer tube to enable the unlocking button to be disengaged from the limiting portion in a matching mode, the limiting portion is far away from the unlocking button to be opposite to the outer tube in the horizontal direction in the sliding path.

6. The support leg according to claim 3, wherein: an end face of the unlocking button is abutted to an end face of the driving piece to be matched, and the unlocking button and the end face of the driving piece are abutted to each other to be a straight face.

7. The support leg according to claim 3, wherein: the locking piece is provided with a matching part, and the matching part is abutted against the other end face of the driving piece to be matched.

8. The support leg according to claim 3, wherein: the upper end of outer tube and children's safety seat's seat body coupling, the lower tip of inner tube can support and locate the vehicle floor, the lower tip of outer tube is the fixed fixing base that is provided with on, the locking piece the release button with the driving piece all sets up in the fixing base, be provided with on the release button and press the splenium, be provided with the window on the fixing base, press the splenium to follow stretch out in the window the outside of fixing base, one-way tooth's socket has last lateral wall and lower lateral wall, it sets up to go up the lateral wall slope, the lateral wall level sets up down, the spring bolt have with go up lateral wall complex inclined plane, work as when one-way locking device is in the lock state, go up the lateral wall with the cooperation is established in the inclined plane counterbalance.

9. The support leg according to claim 3, wherein: the supporting leg further comprises an elastic assembly for driving the locking piece, the unlocking button and the driving piece to reset from the unlocking state to the locking state.

10. A child safety seat, characterized by: the support leg of any one of claims 1 to 9.