CN211592679U

CN211592679U - Locking mechanism and baby carriage with same

Info

Publication number: CN211592679U
Application number: CN201922219744.3U
Authority: CN
Inventors: 李进彪; 刘祎敏
Original assignee: Shanghai Yuntong Children's Products Co ltd
Current assignee: Shanghai Yuntong Children's Products Co ltd
Priority date: 2019-12-07
Filing date: 2019-12-07
Publication date: 2020-09-29
Anticipated expiration: 2029-12-07

Abstract

The utility model discloses a locking mechanism and a baby carriage with the locking mechanism, wherein the locking mechanism comprises a fixed seat, a sliding seat, a locking part and an elastic part, the upper end of the sliding seat is fixedly connected with the supporting leg of the fixed seat, the sliding seat is connected with the supporting leg and can slide along the extending direction of the supporting leg, the locking part is pivoted with the upper side of the supporting leg or/and the fixed seat, a rod piece is arranged on the sliding seat, the lower end of the locking part is provided with a hook-shaped part, the elastic part is arranged between the fixed seat and the locking part, the baby carriage comprises a front foot, a first connecting piece and the locking part, the rear end of the front foot is pivoted with the fixed seat, the front end of the first connecting piece is pivoted with the front foot, the rear end is pivoted with the sliding seat, under the action of the elastic part, the hook-shaped part hooks, the baby carriage is stably locked in the unfolding state, and the safety of the baby carriage in the unfolding state is ensured.

Description

Locking mechanism and baby carriage with same

Technical Field

The utility model relates to an infant's product field especially relates to locking mechanical system and be equipped with this locking mechanical system's perambulator.

Background

Generally, a stroller is convertible between an unfolded state and a folded state, and a locking mechanism for locking the stroller in the unfolded state is provided to unlock the locking mechanism when the unfolded stroller is to be folded. The locking structure is different for different strollers.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a locking mechanical system and be equipped with this locking mechanical system's perambulator, locking mechanical system simple structure, and can lock the perambulator in the expansion state very stably.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a locking mechanical system, includes a fixing base, upper end fixed connection in the supporting legs of fixing base, connect in on the supporting legs and can along the gliding slide of extending direction of supporting legs, a locking piece, an elastic component, the locking piece with supporting legs upside or/and fixing base pin joint, be provided with on the slide with locking piece complex sticking department, the elastic component set up in between fixing base or supporting legs and the locking piece under the effect of elastic component, locking piece and sticking department cooperation, thereby the slide can not slide by the supporting legs relatively, locking mechanical system is in the lock-out condition.

The supporting leg comprises two branch pipes which are arranged at intervals, and the upper sides of the two branch pipes extend into the fixed seat and are fixedly connected with the fixed seat; the sliding seat comprises a body, two through holes are formed in two sides of the body at intervals for the two branch pipes to pass through respectively, the sliding seat further comprises a locking seat extending upwards from the middle of the body, the body is located outside the lower end of the fixed seat, the locking seat is located between the two branch pipes and extends upwards into the fixed seat, and the locking part is arranged on the locking seat; the locking piece is also arranged in the fixed seat.

When the locking mechanism is in a locking state, the upper end of the sliding seat body is abutted against the lower end of the fixed seat.

The locking piece lower extreme is provided with colludes the form portion, the sticking department sets up to supply collude the member that the form portion catches on, the member with the locking seat is connected.

The locking seat comprises two locking plates which are arranged at intervals, and two ends of the rod piece are respectively connected with the two locking plates.

The middle part of the locking piece is pivoted to the upper side of the supporting leg or/and the fixing seat, the hook-shaped part is arranged on one side of the lower end of the locking piece, the elastic piece is arranged between the fixing seat and the upper end of the locking piece, the elastic piece is arranged to be a spring, and the hook-shaped part, the rod piece and the spring of the locking piece are all positioned on the same side of the locking piece; or, the elastic part is set as a tension spring, the upper end of the locking part and the fixing seat are respectively connected with the two ends of the tension spring, and the tension spring and the rod piece are located on the opposite side of the locking part.

The inner wall of one side of the fixed seat facing the upper end of the locking piece is convexly provided with two mutually spaced convex blocks, a gap is arranged between the two convex blocks, the spring is arranged in the gap, and one end of the spring is in contact with the upper end of the locking piece.

A baby carriage comprises a front foot, a first connecting piece and the locking mechanism, wherein the rear end of the front foot is pivoted to a fixed seat or/and a supporting leg of the locking mechanism, the front end of the first connecting piece is pivoted to the front foot, and the rear end of the first connecting piece is pivoted to a sliding seat of the locking mechanism.

The baby carriage further comprises a carriage handle and a second connecting piece, the lower end of the carriage handle is pivoted to the fixing seat or/and the supporting legs, the upper end of the second connecting piece is pivoted to the carriage handle, and the lower end of the second connecting piece is pivoted to the sliding seat.

The baby carriage further comprises a front wheel connected to the front lower part of the front foot and a rear wheel connected to the rear lower part of the supporting foot; the baby carriage is also provided with an unlocking device for unlocking the locking mechanism.

The utility model has the advantages that:

the utility model discloses locking mechanical system and perambulator so set up, locking mechanical system simple structure, low in manufacturing cost can lock the perambulator in the expansion state very steadily moreover to guarantee that the perambulator is in the security of using under the expansion state.

Drawings

Fig. 1 is a schematic plan view of the stroller of the present invention in an unfolded state;

fig. 2 is a schematic perspective view of the stroller of the present invention in an unfolded state;

fig. 3 is an exploded view of the locking mechanism (part a in fig. 2) of the present invention;

FIG. 4 is an enlarged schematic view of the slide carriage of the locking mechanism of the present invention;

FIG. 5 is an enlarged cross-sectional view taken along line B-B of FIG. 2;

FIG. 6 is an enlarged perspective view of a portion of the locking mechanism assembly of the present invention;

fig. 7 is a schematic plan view of the stroller of the present invention during the folding process;

fig. 8 is a schematic plan view of the stroller of the present invention in a folded state.

Detailed Description

As shown in fig. 1 to 6, the utility model discloses a locking mechanism, locking mechanism include a fixing base 1, upper end fixed connection in supporting legs 2 of fixing base 1, connect in on supporting legs 2 and can along the gliding slide 3 of the extending direction of supporting legs 2, a locking piece 4, an elastic component 5, locking piece 4 with supporting legs 2 upside or/and the pin joint of fixing base 1, be provided with on the slide 3 with locking piece 4 complex sticking department 31, elastic component 5 set up in between fixing base 1 and the locking piece 4 or set up between supporting legs 2 and locking piece 4 under the effect of elastic component 5, locking piece 4 and sticking department 31 cooperation, thereby slide 3 can not slide relative supporting legs 2, locking mechanism is in the locking state. With such an arrangement, the locking mechanism is simple in structure and low in manufacturing cost.

In this embodiment, the supporting leg 2 includes two branch pipes 21 arranged at intervals, and the upper sides of the two branch pipes 21 extend into the fixing base 1 and are fixedly connected with the fixing base; the sliding seat 3 comprises a body 32, two through holes 321 are formed in two sides of the body 32 at intervals, the two branch pipes 21 respectively penetrate through the through holes, the sliding seat 3 further comprises a locking seat 33 extending upwards from the middle of the body 32, the body 32 is located outside the lower end of the fixed seat 1, the locking seat 33 is located between the two branch pipes 21 and extends upwards into the fixed seat 1, and the locking part 31 is arranged on the locking seat 33; the locking member 4 is also disposed in the fixing base 1. Thus, the locking part 31 and the locking part 4 are both positioned in the fixed seat 1, so that after the locking part and the fixed seat are matched and locked, the unlocking caused by accidental collision of foreign objects can be avoided, and the stability of the locking state in the locking state is ensured.

The locking member 4 is provided with a hook-shaped portion 41 at a lower end thereof, the locking portion 31 is a rod member for hooking the hook-shaped portion 41, and the rod member is connected to the locking seat 33. Under the action of the elastic element 5, the lower end of the hook-shaped part 41 hooks the rod, so that the sliding seat 3 cannot move downwards, and the locking mechanism is in a locking state.

In this embodiment, the locking seat 33 includes two locking plates 331 spaced apart from each other, and the two ends of the rod are connected to the two locking plates 331 respectively. Therefore, the stress uniformity of the rod piece can be ensured, and the locking effect of the locking mechanism is not influenced by the fact that the rod piece is not easy to deform.

In this embodiment, 4 middle parts of locking piece pin joint in 2 upside of supporting legs or fixing

base

1, 4 lower extreme one sides of locking piece are provided with collude form portion 41, the elastic component set up in between

fixing base

1 and 4 upper ends of locking piece, elastic component 5 sets up to the spring, just 4 collude form portion 41, member and spring of locking piece and all lie in the same one side of locking piece 4, so, form to seesaw formula, under the effect of spring, 4 upper ends of locking piece are toward the one side rotary motion who deviates from the spring to 4 lower extremes of locking piece collude form portion 41 toward one side rotary motion of member and collude the member.

For the unblock locking mechanical system, be provided with an unlocking mechanism on the fixing base 1, unlocking mechanism can be a button (not shown), button one end extends elasticity finger, and is corresponding, fixing base 1 sets up the jack in the corresponding position that locking piece 4 upper end deviates from one side of spring, the elasticity finger of button inserts through the jack wall portion around the jack in fixing base 1 and back-off, under the effect of spring, 4 upper ends of locking piece deviate from one side of spring with elasticity finger contact. When the locking mechanism is to be unlocked, the button is pressed, so that the upper end of the locking piece 4 rotates towards one side of the spring and compresses the spring, and the hook-shaped part 41 at the lower end of the locking piece 4 rotates towards one side far away from the rod piece and is separated from the hook buckle of the rod piece according to the seesaw principle, at the moment, the locking mechanism is unlocked, and the sliding seat 3 can slide up and down relative to the support frame.

In this embodiment, preferably, when the locking mechanism is in the locked state, the upper end of the sliding seat body 32 abuts against the lower end of the fixed seat 1. With such an arrangement, after the locking mechanism is unlocked and the button is released from being pressed, when the sliding base 3 moves upwards to contact with the lower end of the fixed base 1 and cannot slide upwards any more, under the action of the spring, the locking member 4 automatically rotates to enable the hook-shaped portion 41 to hook the rod member again, so that the locking mechanism is automatically locked. That is, only the upper end of the sliding seat body 32 abuts against the lower end of the fixed seat 1, it means that the locking mechanism may be in the locking state, and when the upper end of the sliding seat body 32 does not abut against the lower end of the fixed seat 1, it means that the locking mechanism is not locked, and the sliding seat can also slide relative to the supporting foot 2. Therefore, the locking state of the locking mechanism is more visual, an operator can conveniently observe the locking mechanism, the situation that the locking is not in place is avoided, and the reliability and the safety of the locking mechanism in the locking state are ensured.

In this embodiment, the inner wall of the fixing base 1 facing the upper end of the locking member is convexly provided with two mutually spaced protrusions 11, a gap 111 is formed between the two protrusions 11, the spring is disposed in the gap 111, one end of the spring is in contact with the upper end of the locking member 4, and the other end of the spring is in contact with the inner wall of the fixing base. With the arrangement, the spring is not easy to displace, so that the state that the hook-shaped part 41 of the locking piece 4 always hooks the rod piece in the locking state is maintained, and the stability and the reliability of the locking mechanism in the locking state are ensured. Preferably, the gap 111 is set to be wide in the middle and narrow at the upper and lower sides, the spring is located in the wide part in the middle of the gap 111, and the width of the gap at the upper and lower sides is smaller than the outer diameter of the spring, so that the spring can only move up and down in the wide part in the middle of the gap, and the spring is further ensured not to shift. Preferably, a boss 42 is extended from the upper end of the locking member 4 to one side facing the spring, and the boss 42 is clamped into one end of the spring, so as to ensure that the elastic force of the spring can always force the locking member 4 to be in a locking state hooking the rod member.

In other embodiments, the elastic member 5 may be a tension spring, one end of the tension spring is connected to the upper end of the locking member 4, the other end of the tension spring is fixedly connected to the locking member, and the tension spring and the rod member are respectively located on opposite sides of the locking member 4 (not shown). Under the action of the tension spring, the upper end of the locking member 4 rotates towards one end facing the tension spring, and the hook-shaped part 41 rotates towards one side facing the rod piece to hook the rod piece.

The hook-shaped portion 41 may be a straight hook, an arc hook, or a hook with other shapes.

In other embodiments, the locking portion 31 may be configured as a groove, the hook portion 41 hooks the groove, and the locking mechanism is in a locking state.

The utility model also discloses a baby carriage, baby carriage includes preceding foot 6, first connecting piece 7 and above-mentioned locking mechanical system, preceding foot 6 rear end pin joint in locking mechanical system's fixing base 1 or supporting legs 2, first connecting piece 7 front end pin joint in preceding foot 6, the rear end pin joint in locking mechanical system's slide 3. When the locking mechanism is in a locked state, the sliding seat 3 cannot move downwards relative to the supporting leg 2, so that the front leg 6 and the supporting leg 2 cannot rotate relatively to approach each other, and the stroller is stably locked in a unfolded state.

The utility model discloses the perambulator still includes car hand 8, second connecting

piece

9, 8 lower extreme pin joints of car hand in fixing base 1 or supporting

legs

2, 9 upper end pin joints of second connecting piece in car hand 8, the lower extreme pin joint in slide 3. When the locking mechanism is in the locked state, the sliding seat 3 cannot move downwards relative to the supporting foot 2, and therefore the rider 8 and the second connecting piece 9 cannot relatively rotate to approach the front foot 6 and the first connecting piece 7, namely the baby carriage is still stably locked in the unfolded state.

The unlocking mechanism may also be configured in other structures, for example, the locking mechanism includes an operating element connected to the upper side of the push handle, and a steel wire (not shown) having an upper end connected to the operating mechanism, the lower end of the steel wire is horizontally routed and connected to the upper end of the locking element 4, the operating mechanism is driven to drive the steel wire to pull the locking element 4 toward one side of the spring, so that the hook-shaped portion 41 at the lower end of the locking element 4 is separated from the rod, and at this time, the locking mechanism is unlocked, and the components of the frame can rotate relatively.

That is, the stroller is further provided with an unlocking device for unlocking the locking mechanism.

The unlocking mechanism can also be any other known and feasible mechanism, and is not the key point of the invention, so the details are not described herein.

When the baby carriage is to be folded, the locking mechanism needs to be unlocked firstly, the baby carriage 8 rotates and moves backwards and downwards, the second connecting piece 9 can be forced to rotate and move downwards, so that the sliding seat 3 is driven to move downwards along the supporting leg 2, and then the rear end of the first connecting piece 7 is driven to rotate and move downwards along with the sliding seat 3, therefore, the front end of the first connecting piece 7 can pull the front leg 6 to rotate backwards and move towards the rear supporting leg (as shown in fig. 7), until the baby carriage is folded when the baby carriage 8, the front leg 6, the supporting leg 2, the first connecting piece 7 and the second connecting piece 9 are relatively close together (as shown in fig. 8).

The baby carriage further comprises a push handle rod 10 with the lower end pivoted to the upper end of the handle 8, so that after the locking mechanism is unlocked, the push handle rod 10 is rotated forwards, the lower end of the push handle rod 10 rotates backwards and downwards, the baby carriage can be driven to rotate backwards and downwards, the handle 8 can be driven to rotate backwards and downwards, and the push handle rod 10 is also drawn close to the handle 8 after the baby carriage is folded.

The utility model discloses the perambulator still including connect in front wheel 20 of lower part before preceding forefoot 6, connect in lower part's rear wheel 30 behind supporting legs 2, when above-mentioned locking mechanical system is in the locking state, the perambulator passes through front wheel 20 and rear wheel 30 and stably supports in ground.

For the baby carriage of the utility model, the locking mechanism is arranged between the supporting leg 2 and the sliding seat 3, and the position is not easy to be touched by foreign objects, so that the locking mechanism is not easy to be unlocked by misoperation, thus ensuring the stability and reliability of the baby carriage in the locking state, namely ensuring the use safety of the baby carriage in the unfolding state; and after the unlocking, other components of the baby carriage can relatively rotate and move, so that the baby carriage is easy to fold.

Claims

1. A locking mechanism, characterized by: including a fixing base, upper end fixed connection in the supporting legs of fixing base, connect in on the supporting legs and can along the gliding slide of extending direction of supporting legs, a locking piece, an elastic component, the locking piece with supporting legs upside or/and fixing base pin joint, be provided with on the slide with locking piece complex sticking department, the elastic component set up in between fixing base and the locking piece or set up in between supporting legs and the locking piece under the effect of elastic component, locking piece and sticking department cooperation, thereby the supporting legs slides relatively to the slide, locking mechanical system is in the lock-out condition.

2. The locking mechanism of claim 1, wherein: the supporting leg comprises two branch pipes which are arranged at intervals, and the upper sides of the two branch pipes extend into the fixed seat and are fixedly connected with the fixed seat; the sliding seat comprises a body, two through holes are formed in two sides of the body at intervals for the two branch pipes to pass through respectively, the sliding seat further comprises a locking seat extending upwards from the middle of the body, the body is located outside the lower end of the fixed seat, the locking seat is located between the two branch pipes and extends upwards into the fixed seat, and the locking part is arranged on the locking seat; the locking piece is also arranged in the fixed seat.

3. The locking mechanism of claim 2, wherein: when the locking mechanism is in a locking state, the upper end of the sliding seat body is abutted against the lower end of the fixed seat.

4. The locking mechanism of claim 2 or 3, wherein: the locking piece lower extreme is provided with colludes the form portion, the sticking department sets up to supply collude the member that the form portion catches on, the member with the locking seat is connected.

5. The locking mechanism of claim 4, wherein: the middle part of the locking piece is pivoted to the upper side of the supporting leg or/and the fixed seat, the hook-shaped part is arranged on one side of the lower end of the locking piece, the elastic piece is arranged between the fixed seat and the upper end of the locking piece, the elastic piece is arranged to be a spring, and the hook-shaped part, the rod piece and the spring of the locking piece are all positioned on the same side of the locking piece; or, the elastic part is set as a tension spring, the upper end of the locking part and the fixing seat are respectively connected with the two ends of the tension spring, and the tension spring and the rod piece are located on the opposite side of the locking part.

6. The locking mechanism of claim 5, wherein: the inner wall of one side of the fixed seat facing the upper end of the locking piece is convexly provided with two mutually spaced convex blocks, a gap is arranged between the two convex blocks, the spring is arranged in the gap, and one end of the spring is in contact with the upper end of the locking piece.

7. The locking mechanism of claim 4, wherein: the locking seat comprises two locking plates which are arranged at intervals, and two ends of the rod piece are respectively connected with the two locking plates.

8. The locking mechanism of claim 5 or 6, wherein: the locking seat comprises two locking plates which are arranged at intervals, and two ends of the rod piece are respectively connected with the two locking plates.

9. A stroller, characterized in that: comprising a front foot, a first connecting piece and a locking mechanism according to any one of claims 1 to 8, wherein the rear end of the front foot is pivoted to a fixed seat or/and a supporting foot of the locking mechanism, the front end of the first connecting piece is pivoted to the front foot, and the rear end is pivoted to a sliding seat of the locking mechanism.

10. The stroller of claim 9, wherein: still include driver, second connecting piece, the pivot joint of driver lower extreme in fixing base or/and supporting legs, second connecting piece upper end pivot joint in the driver, the lower extreme pivot joint in the slide.

11. The stroller of claim 9 or 10, wherein: further comprises a front wheel connected with the front lower part of the front foot and a rear wheel connected with the rear lower part of the supporting foot.

12. The stroller of claim 11, wherein: the baby carriage is also provided with an unlocking device for unlocking the locking mechanism.