CN201371843Y - Baby carriage framework folding structure - Google Patents

Abstract

The utility model discloses a baby carriage skeleton structure of folding up, it includes hand push frame, preceding foot rest, back foot rest, mount, support frame and locking mechanism, and this locking mechanism includes location sliding sleeve and drive location group. The utility model discloses a through utilizing remote control mechanism control locking of locking mechanism to pull and release, the expansion and the folding up of skeleton can be realized to operable simple ground. When the framework is unfolded, the framework is firmly unfolded by locking the locking mechanism, and the framework cannot be folded accidentally; when the framework is folded, the folding positioning mechanism ensures that the framework cannot be automatically unfolded, thereby ensuring the safety of the baby. Meanwhile, due to the unfolding auxiliary mechanism, the hand push frame can automatically bounce upwards for a certain height when being unfolded, so that the unfolding operation is simpler and more convenient.

Description

Folding structure of a stroller frame

technical field

The utility model relates to a skeleton structure of a baby carriage, in particular to a folding structure of the skeleton of a baby carriage which can be unfolded and folded through a remote control mechanism.

Background technique

As we all know, traditional baby trolleys are mainly used to carry babies. In order to facilitate storage and transportation, the skeleton of the baby stroller usually has two states: unfolded and folded, and the folded structure is often used to realize these two states. Therefore, various folding structures have emerged as the times require. As disclosed in U.S. Patent No. 5,876,057, the traditional folding structure usually includes an upper joint arranged on the handle tube and a lower joint fixed at the end of the front leg tube and having a positioning groove on the end surface, wherein the handle tube and the lower joint The joints are pivotally connected, and a positioning rod that can be moved by the pull rod is arranged on the handle tube. The positioning rod is kept in the positioning groove by means of the elastic component, and a latching fixed state can be formed; when the skeleton is to be folded , the positioning rod can be pulled by the pull rod to make it break away from the positioning groove, thereby forming a released and folded state.

In this traditional skeleton folding structure, the joint group used to control the fixation and release is arranged between the front leg tube and the hand push rod, and can make the upper and lower joints expand or merge. When a stroller with this structure encounters an obstacle, the hand push rod must be pressed down to raise the front wheel, which will increase the stress on the joint group and easily cause damage or failure of the joint group or pinch injury At the same time, the skeleton of this baby carriage is prone to the danger of being folded accidentally.

Utility model content

In order to overcome the above-mentioned defects in the prior art, the purpose of this utility model is to provide a novel folding structure for the skeleton of the baby carriage, through which the folding and unfolding of the skeleton of the baby carriage can be conveniently operated, and the skeleton does not Accidental collapsing or not unfolding automatically after folding makes the stroller safe and secure to use.

The above-mentioned purpose of the utility model is achieved by adopting the following technical solutions:

The utility model provides a folding structure of a stroller skeleton, which comprises a hand push frame provided with a remote control mechanism; a rear foot frame pivotally connected with the hand push frame through a pivot seat; and a lock mechanism, which is arranged on Between the push frame and the rear foot frame, there is a positioning sliding sleeve and a driving positioning group. The positioning sliding sleeve is slidably installed on the rear foot frame. It has a positioning position and a folded position. The driving positioning group can be driven by the push frame The positioning sliding sleeve is moved from the positioning position to the folded position; the front foot frame, the upper end of the front foot frame is connected with the positioning sliding sleeve; the fixing frame, the fixing frame is connected between the front foot frame and the rear foot frame; and the support frame, the support The frame is connected between the push frame and the positioning sliding sleeve. When the positioning sliding sleeve moves from the positioning position to the folded position, the positioning sliding sleeve is driven through the support frame and the front foot frame is folded towards the rear foot frame.

The beneficial effect of the utility model is that the utility model realizes the unfolding and folding of the skeleton by using the remote control mechanism to control the locking and releasing of the locking mechanism, and the utility model is easy to operate and easy to use. When the skeleton is in the unfolded state, the locking mechanism makes the skeleton unfold firmly without accidental folding, thus ensuring the safety of the baby. When the frame is in the folded state, the folded positioning mechanism prevents the frame from automatically unfolding, which is conducive to carrying safety when traveling. At the same time, the frame of the collapsible stroller has an auxiliary unfolding mechanism, which enables the push frame to automatically bounce up to a certain height when unfolded, making the unfolding operation more concise and convenient.

Description of drawings

Fig. 1 is a schematic diagram of the unfolded state of the folding structure of the stroller skeleton according to a preferred embodiment of the present invention;

Fig. 2 is a schematic side view of the folded structure of the stroller frame shown in Fig. 1 in the unfolded state (the positioning sliding sleeve is in the positioning position);

3 is an exploded perspective view of components of the locking device;

Fig. 4 is a three-dimensional schematic view of the folding structure of the stroller skeleton shown in Fig. 1 during the folding operation;

Fig. 5 is a schematic side view of the folding structure of the stroller skeleton shown in Fig. 1 during the folding operation;

Fig. 6 is a schematic diagram of the operation of driving the positioning group by pushing the trolley;

Fig. 7 is a schematic side view of the folding structure of the stroller frame shown in Fig. 1 in the folded and positioned state, in which the frame of the baby carriage is fixed by the latch of the folded positioning mechanism, and the positioning sliding sleeve is in the folded position;

Fig. 8 is a three-dimensional schematic diagram of the folding structure of the stroller skeleton shown in Fig. 1 in a folded and positioned state;

Fig. 9 is an exploded schematic diagram of components of the drive positioning group and the deployment assistance mechanism;

Fig. 10 is a schematic diagram of the operation of using the push frame to push the pivot piece to rotate, and then push the linkage to move;

Fig. 11 is a schematic diagram of the state of the auxiliary mechanism unfolded when the folding structure of the stroller skeleton shown in Fig. 1 is in the folded and positioned state;

Fig. 12 is a schematic diagram of the movement of pulling the pushing frame upwards to a certain height after the pulling force of the stretching spring of the unfolding auxiliary mechanism drives the return rotary piece after the folding positioning mechanism is released; and

Fig. 13 is a schematic diagram of the movement of the push frame moving upwards to a certain height after the folding positioning mechanism of the stroller framework shown in Fig. 1 is released.

Reference signs:

2 remote control mechanism; 3 locking mechanism; 4 pivot seat; 5 drive positioning group;

6 folding positioning mechanism; 7 unfolding auxiliary mechanism;

10 stroller skeleton; 11 front foot frame; 12 rear foot frame; 13 push frame; 14 support frame; 15 buckle slot; 16 fixed frame;

33 folding position; 34 connecting part; 35 crossbar; 36 pivot joint; 41 upper seat; 42 lower seat;

51 pivoting piece; 52 linking piece; 53 positioning pin; 54 elastic assembly; 55 homing rotary piece;

61 fixing seat; 62 clamping bolt; 63 elastic component; 64 fixing groove; 71 connector;

72 elastic components; 100 expanded fixed state; 110 front wheels; 120 rear wheels;

121 kit; 131 group socket; 132 inner tube; 133 outer tube; 134 push end;

135 elastic component; 136 pole; 200 folded state; 310 positioning slot;

521 is pushed end; 522 driving slope; 551 long arc groove.

Detailed ways

Preferred embodiments of the present utility model will be described in detail below according to the accompanying drawings.

Figures 1 and 2 show a foldable structure of the stroller frame according to a preferred embodiment of the present invention, which is placed on the stroller frame 10 for maintaining and controlling the stroller frame 10 in an unfolded and fixed state 100, or in a folded state. folded state 200 (as shown in FIG. 8 ).

As shown in FIGS. 3 to 5 , the stroller frame 10 includes a front foot frame 11 , a rear foot frame 12 , a push frame 13 , a support frame 14 , a fixing frame 16 , a remote control mechanism 2 and a locking mechanism 3 .

In this embodiment, the front leg frame 11 is a substantially inverted U-shaped frame, the lower end of which is connected to the front wheel set 110 , and the upper end is connected to the locking mechanism 3 .

In addition, the lower end of the rear foot frame 12 is connected with the rear wheel set 120, and its upper end is pivotally connected with the lower end of the push frame 13 through the pivot seat 4, and the pivot seat 4 includes an upper seat 41 and a lower seat 42 which are pivotally connected to each other. The upper seat 41 and the lower seat 42 are connected to the ends of the hand push frame 13 and the rear foot frame 12 respectively, so that the hand push frame 13 can be expanded or folded relative to the rear foot frame 12 .

The lower end of the trolley frame 13 is connected with the upper seat 41 of the pivot seat 4, and is provided with an assembly seat 131, through which a seat, a basket or a baby car safety seat can be detachably installed on the stroller frame 10. Seats and other baby carriers (not shown in the figure). In addition, the hand push frame 13 includes an inner tube 132 and an outer tube 133 which are socketed with each other, and a remote control mechanism 2 is installed on the inner tube 132. In this embodiment, the remote control mechanism 2 is a release mechanism. The remote control mechanism 2 can be used to control the stretching and fixing of the inner tube 132 relative to the outer tube 133, so that the push frame 13 can be used by operators of different heights. The lower end of the inner tube 132 is provided with a pushing end 134 for pushing the locking mechanism 3 to move so as to realize the folding of the stroller frame 10 . A pivot seat 20 is further fixedly sleeved on the lower side of the trolley frame 13 , which is connected to the upper end of the support frame 14 for fixing the upper end of the support frame 14 when the stroller frame 10 is unfolded or collapsed.

The fixing frame 16 is connected between the lower side of the front leg frame 11 and the rear leg frame 12 .

3 and 6, the locking mechanism 3 is arranged between the push frame 13 and the rear foot frame 12, and includes a drive positioning group 5 and a positioning sliding sleeve 31 that can slide along the rear foot frame 12, and the positioning sliding The sleeve 31 is provided with a positioning groove 310 . The driving positioning group 5 can move under the push action of the push frame 13, and through the control of the driving positioning group 5, the positioning groove 310 on the positioning sliding sleeve 31 can be engaged with the driving positioning group 5 to be in the unfolded positioning position 32 or Released to move to the stowed position 33 .

A connecting portion 34 is arranged between the positioning sliding sleeves 31 on both sides of the stroller frame 10, and the connecting portion 34 is connected to the upper end of the front foot frame 11, so that the positioning sliding sleeve 31 can be linked with the expansion of the front foot frame 11 when moving. and folding, and a cross bar 35 is connected between the connecting parts 34, which is used to keep the positioning sliding sleeves 31 on both sides of the stroller frame 10 to slide synchronously, so as to realize the unfolding and folding of the stroller frame 10 smoothly. .

The support frame 14 is pivotally connected between the pivot seat 20 of the hand push frame 13 and the pivot joint 36 of the positioning sliding sleeve 31, and is used for turning the hand push frame 13 toward the rear foot frame 12 to close and fold, and can pass through the support frame. 14 to push the positioning sliding sleeve 31 to move from the positioning position 32 to the folding position 33, and then realize the folding of the stroller frame 10.

As shown in FIGS. 1 and 8 , by utilizing the arrangement of the various components of the stroller frame 10 , when the stroller frame 10 is in the unfolded and fixed state 100 , the positioning sliding sleeve 31 is located at the positioning position 32 . When the operator wants to fold the framework 10, the pushing end 134 of the inner tube 132 of the push frame 13 can be pushed to move the driving positioning group 5 by operating the remote control mechanism 2, thereby releasing the driving positioning group 5 to the positioning sliding sleeve 31. In the buckled state, the operator can push the hand push frame 13 and approach the rear foot frame 12 with the pivot seat 4 as the axis. At the same time, the positioning sliding sleeve 31 is driven through the support frame 14, and the positioning sliding sleeve 31 is linked The front leg frame 11 moves the positioning sliding sleeve 31 from the positioning position 32 to the folded position 33 , thereby making the rods overlap each other, so that the stroller frame 10 forms the folded state 200 .

As shown in Figures 3 and 6, the driving and positioning group 5 of the locking mechanism 3 includes a pivoting piece 51, a link 52, a positioning pin 53 and an elastic assembly 54, wherein the pivoting piece 51 is pivotally connected to the pivoting seat 4. Inside; the linkage 52 is movably arranged inside the rear foot frame 12, and includes a pushed end 521 and a driving slope 522; the positioning pin 53 is movably arranged in the sleeve 121 in the rear foot frame 12, and is located and arranged on The position opposite to the driving slope 522 at the lower end of the linkage member 52 . In an alternative embodiment, the rear foot frame 12 is provided with a buckle groove 15 for the end of the positioning pin 53 to pass through, and the elastic assembly arranged between the linkage 52 and the positioning pin 53 54 keeps the locking of the positioning pin 53 on the positioning sliding sleeve 31 , thereby keeping the positioning sliding sleeve 31 at the positioning position 32 .

6 and 7, when the operator wants to fold the frame 10, the inner tube 132 of the push frame 13 can be moved to the lowermost position under the control of the remote control mechanism 2 . Then, the operator continues to push the inner tube 132 of the hand push frame 13, so that the pushing end 134 pushes the pivot piece 51 to rotate through the support rod 136 sleeved with the elastic assembly 135, and after the pivot piece 51 rotates, pushes The pushed end 521 of the linkage 52 makes the linkage 52 slide downward to produce a displacement, and drives the positioning pin 53 to retract laterally through the driving slope 522 , thereby releasing the locking state of the positioning sliding sleeve 31 . Afterwards, the operator pushes down the trolley frame 13 , and the interlocking support frame 14 , the front leg frame 11 and the rear leg frame 12 pivot with each other, so as to realize folding. At this time, the positioning sliding sleeve 31 has slid from the positioning position 32 to the folded position 33 .

As shown in FIG. 9 , the driving positioning group 5 further includes a return rotating piece 55, which is pivotally connected to the pivot seat 4 and is pivotally connected to the same shaft as the pivot piece 51, and one end of it It is connected with the push frame 13 and can be driven by the push frame 13 to rotate. The return rotating piece 55 includes a long arc slot 551 and is pivotally connected to the pivoting piece 51 through the long arc slot 551 . When the inner tube 132 pushes the pivoting piece 51 to rotate to release the positioning pin 53 , the pivoting piece 51 rotates within the range of the long arc slot 551 , while the return turning piece 55 does not move. When the push frame 13 is folded downwards and rotated, the return rotating piece 55 rotates in the direction opposite to the movement of the pivoting piece 51, and after idling in the long arc groove 551, it further drives the pivoting piece 51 to rotate to The original pushed position.

Continuing to refer to Fig. 3 and Fig. 9, in order to prevent the stroller frame from being pulled apart again in the folded state 200, the utility model is further provided with a folded positioning mechanism 6, which includes a fixing seat 61, a latch 62 and an elastic Assembly 63 , wherein the fixing seat 61 is fixed on one side of the front leg 11 and includes a fixing slot 64 ; the latch 62 is movably arranged on the upper side of the rear leg 12 . When the stroller frame 10 is in the folded state 200, the front foot frame 11 and the rear foot frame 12 are in an overlapping state inside and outside, and the end of the latch 62 automatically enters the fixing groove 64 of the fixing seat 61 through the elastic force of the elastic component 63 and is locked. Buckled therein, the front and rear legs 11 and 12 are thus restricted from being in a fixed state and cannot be pivoted and unfolded from each other, thereby achieving the purpose of firmly folding the frame 10 . When unfolding the stroller frame 10 , the operator can pull the latch 62 to disengage its end from the fixing groove 64 , and then pull the hand push frame 13 upwards, thereby unfolding the stroller frame 10 to the unfolded state.

As shown in Figures 8 and 9, when the stroller frame 10 is in the collapsed state 200, the push frame 13 overlaps the top of each rod, and the operator can pull the push frame 13 upward to affect the pivoting of each rod frame. to present the expanded state 100 . In addition, in order to automatically rotate the trolley frame 13 to a certain height after the folding positioning mechanism 6 is released, so as to facilitate the operator to hold it, the stroller frame 10 of this embodiment further includes an unfolding auxiliary mechanism 7, and the unfolding auxiliary mechanism 7 It includes a connecting piece 71 and an elastic assembly 72, wherein the connecting piece 71 is connected between the pivot piece 51 and the elastic assembly 72, and the elastic assembly 72 is a tension spring, one end of which is fixed on the lower end of the rear foot frame 12, and the other end is connected to the Part 71 is connected.

Referring to Figures 10 to 13, when the operator pushes down the push frame 13 to fold the frame 10, the pivoting piece 51 is pulled back to its original position by the return rotating piece 55, thereby pulling the elastic component 72 through the connecting piece 71 , so that when the stroller frame 10 is in the folded and positioned state 200, the tension spring 72 remains stretched and has an elastic state of returning to its original shape. And when the operator removes the restriction to the folding positioning mechanism 6, the hand push frame 13 is in a rotatable state, and at this time, by the elasticity of the original position of the tension spring 72, the pivoting piece 51 is pulled in the opposite direction, and then Drive the return rotating piece 55 to rotate, thereby pulling the push frame 13 to move, so that the push frame 13 bounces upwards for a certain distance or height, so that the operator pulls the push frame 13 and unfolds the skeleton 10 .

To sum up, the utility model provides a foldable stroller frame, which is easy to use, does not unfold automatically after being folded, and is safe and reliable.

The above disclosures are only preferred embodiments of the present utility model, and certainly cannot be used to limit the protection scope of the present utility model. It can be understood that equivalent changes made according to the essence and scope defined in the appended claims of the present invention still belong to the scope covered by the present invention.

Claims (10)

1. a perambulator skeleton folding structure is characterized in that, comprising:

Be provided with the hand push frame of Long-distance Control mechanism;

Rear leg by pivot block and the pivot joint of described hand push frame;

Lock the mechanism of pulling, the described lock mechanism of pulling is arranged between described hand push frame and the described rear leg, comprise locating slide sleeve and drive the location group, described locating slide sleeve is installed on the described rear leg slidably, it has position location and collapsed position, and described driving location group can be driven by described hand push frame and make locating slide sleeve move to described collapsed position from described position location;

Preceding foot rest, the upper end of described preceding foot rest is connected with described locating slide sleeve;

Fixed mount, described fixed mount are connected between described preceding foot rest and the described rear leg; And

Bracing frame, support frame as described above is connected between described hand push frame and the described locating slide sleeve, when described locating slide sleeve when described position location moves to described collapsed position, via support frame as described above drive described locating slide sleeve and interlock described before foot rest draw close to described rear leg folding.

2. perambulator skeleton folding structure as claimed in claim 1, it is characterized in that described hand push frame comprises outer tube and interior pipe, described Long-distance Control mechanism be installed on described on the pipe, be used to control described in pipe flexible and fixing with respect to described outer tube, and then make the hand push frame obtain different height.

3. perambulator skeleton folding structure as claimed in claim 2 is characterized in that, the lower end of described interior pipe is provided with the promote-side that is used to promote described driving location group.

4. perambulator skeleton folding structure as claimed in claim 1 is characterized in that, described driving location group comprises:

Be articulated in the in-to-in pivot sheet of described pivot block, described pivot sheet is positioned at the downside end of described hand push frame;

Be arranged at the in-to-in moving part of described rear leg movably, described moving part comprises and is pushed the moved end and drives the inclined-plane that the described lower end that is pushed moved end and described pivot sheet is close to;

Be arranged at the inside of described rear leg movably and be positioned at the locating dowel pin of the relative position on described driving inclined-plane, described locating dowel pin is used for the described locating slide sleeve of clip, so that described locating slide sleeve remains on described position location; And

Be arranged on the described locating dowel pin, be used to make described locating dowel pin to keep elastic parts the clip of described locating slide sleeve.

5. perambulator skeleton folding structure as claimed in claim 4, it is characterized in that, described driving location group further comprises and is articulated in described pivot block in-to-in playback rotor, described playback rotor comprises the long arc groove that is used to articulate described pivot sheet, one end of described playback rotor is connected with described hand push frame, when described hand push frame launches, return back to original position by the described pivot sheet of described playback rotor interlock.

6. perambulator skeleton folding structure as claimed in claim 1 is characterized in that, is provided with between described preceding foot rest and the described rear leg to be used to keep described perambulator skeleton to be in the folding detent mechanism of stationary state when folding.

7. perambulator skeleton folding structure as claimed in claim 6 is characterized in that, described folding detent mechanism comprises:

Be fixed in the permanent seat on the described preceding foot rest, include hold down groove on the described permanent seat;

Be arranged at the snib of the upper end position of described rear leg movably; And

Be arranged between described snib and the described rear leg, be used to keep the elastic parts of end anchors in the hold down groove of described permanent seat of described snib.

8. as claim 1 or 4 described perambulator skeleton folding structures, it is characterized in that, between described rear leg and described hand push frame, be provided with the expansion auxiliary mechanism that can make described hand push frame upwards bounce up certain altitude automatically.

9. perambulator skeleton folding structure as claimed in claim 8 is characterized in that, comprises in described expansion auxiliary mechanism:

One end and described pivot sheet bonded assembly attaching parts;

Be connected in the elastic parts of the lower end of described attaching parts and described rear leg.

10. perambulator skeleton folding structure as claimed in claim 9 is characterized in that described elastic parts is an extension spring, and when described perambulator skeleton was in the folding positioning states, described extension spring was in the state that is stretched.

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