CN105584513B - Children trolley - Google Patents

Abstract

The invention discloses a stroller for children, wherein the vehicle frame includes a front bracket, a rear bracket, a seat post, a basket rod, and a push rod assembly, and the push rod assembly includes a push rod pivotally connected to the rear bracket, and slides up and down. The slide bar arranged on the push rod is used to provide the elastic restoring force required for the slide bar to slide down relative to the push rod. The lower part of the slide bar is pivotally connected with the front part of the basket rod or the rear part of the seat post. When the frame is in the unfolded state, the locking mechanism is locked, the slide bar and the push rod are locked to each other, and the elastic member is compressed to be in an energy storage state; when the frame is folded, the locking mechanism is unlocked, and the slide bar moves downward under the elastic force of the elastic member. Slide down and drive the front bracket, rear bracket, seat post, basket rod and push rod to automatically fold. The baby stroller has a small number of rods and a simple structure. It can realize semi-automatic folding and fully automatic unfolding. The operation is very convenient. The compact structure of the folded frame takes up less space, which brings great convenience to the daily use of users. .

Description

stroller

technical field

The invention relates to a stroller for children.

Background technique

In the prior art, the structures of children's strollers are various, and the connection structures of the rods on the frame are also various. Correspondingly, the working principles of folding and unfolding of the frame are also different. At present, most of the children's strollers need to rely on human hands to operate when folding and unfolding. Inconvenient to use.

Contents of the invention

The object of the present invention is to provide a baby stroller with simple structure and simple folding and unfolding operations.

In order to achieve the above object, the technical solution adopted by the present invention is: a children's stroller, including a vehicle frame with an unfolded state and a folded state, a locking mechanism for locking the vehicle frame in the expanded state, and the vehicle frame including a front bracket, a rear bracket having an upper portion pivotally connected to an upper portion of the front bracket, a seatpost having a front portion pivotally connected to the front bracket, a front portion pivotally connected to a rear portion of the seatpost, and The rear part is pivotally connected to the basket rod on the rear bracket, and the vehicle frame also includes a push rod assembly, and the push rod assembly includes a push rod pivotally connected to the rear bracket, and is slidably arranged on the The slide bar on the push rod, the elastic member used to provide the elastic restoring force required for the slide bar to slide down relative to the push rod, the lower part of the slide bar and the front part of the basket rod or the seat The rear part of the rod is pivotally connected, when the vehicle frame is in the unfolded state and the locking mechanism is locked, the sliding rod and the push rod are mutually locked, and the elastic member is compressed to be in an energy storage state; When the frame is folded, the locking mechanism is unlocked, and the sliding bar slides downward under the elastic force of the elastic member and drives the front bracket, rear bracket, seat post, basket rod and push rod to automatically close up.

Preferably, the push rod includes a lower push rod, an upper push rod that is telescopic relative to the lower push rod, and a push rod driver arranged between the upper push rod and the lower push rod for driving the two to relatively stretch , wherein the lower push rod is pivotally connected to the rear bracket, when the vehicle frame is in a folded state, the upper push rod shrinks relative to the lower push rod, and the upper push rod and the The sliding rods are locked, and the elastic member is compressed; when the vehicle frame is unfolded, the push rod driver drives the upper push rod upward, and the sliding rod moves upward accordingly and drives the front bracket, The rear bracket, seat post, basket rod and push rod are relatively spread out.

Further, the slide bar is arranged in the push rod to slide up and down, and the slide bar is located between the upper push rod and the lower push rod.

Furthermore, the elastic member is a spring sleeved on the upper push rod, and the upper push rod has an annular flange, and the spring is located between the annular flange and the top end of the slide bar. between.

Furthermore, the locking mechanism includes a locking piece arranged between the upper push rod and the sliding bar for locking the two, and the locking piece includes a locking piece fixed at the bottom of the upper push rod Seat, the locking piece swingably arranged on the locking piece seat, the locking piece has a locking part, and the sliding bar is provided with a locking groove. When the locking piece is locked, the locking part is inserted into In the locking groove; when the locking piece is unlocked, the locking piece swings to make the locking part disengage from the locking groove.

Furthermore, the upper push rod is provided with an unlocking member for unlocking the locking member, and the unlocking member includes a slider slidably arranged in the upper push rod and located above the lock piece seat, The operating part used to drive the sliding block upwards, the locking plate is provided with a waist-shaped groove, the length direction of the waist-shaped groove is inclined to the length direction of the upper push rod, and the sliding block is provided with a stop pin, the stop pin is slidably inserted in the waist-shaped groove, when the slider slides up, the stop pin slides along the waist-shaped groove and drives the locking plate to swing to realize the locking the unlocking of the file.

As a specific implementation manner, the operating member includes an unlocking handle provided on the upper push rod, and a traction cable is fixedly connected between the unlocking handle and the slider.

Preferably, a folding hook assembly for locking both is provided between the upper push rod and the lower push rod, and the driving part of the push rod is a gas spring. After the folding hook assembly is unlocked, the The gas spring drives the upper push rod to slide up relative to the lower push rod so that the vehicle frame is automatically deployed.

Further, the folding hook assembly includes a hook seat fixed on the top of the lower push rod, a hook rotatably arranged on the hook seat, and a push handle end fixed on the upper push rod. The end of the push handle has a hook-shaped portion protruding outward, and the hook has a slot for the corresponding insertion of the hook-shaped portion. When the upper push rod is shrunk and folded relative to the lower push rod, the The hook-shaped portion is clamped in the slot so that the upper push rod and the lower push rod are relatively fixed.

Further, the lower part of the sliding rod is pivotally connected to the front part of the basket rod, or the lower part of the sliding rod, the front part of the basket rod and the rear part of the seat post are connected through the same rotating shaft. pivotally connected, and the vehicle frame is locked in an unfolded state by the locking member.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art: In the children's stroller of the present invention, when the frame is unlocked, the slide bar slides down relative to the push rod to realize the automatic folding of the frame. When the push rod slides up, the frame can be automatically unfolded. The number of rods is small, the structure is simple, and the operation is very convenient. After folding, the structure of the frame is compact and occupies less space, which brings great benefits to the daily use of users. convenience.

Description of drawings

Accompanying drawing 1 is the perspective view of the children's stroller of the present invention in the unfolded state;

Accompanying drawing 2 is a schematic side view of the children's stroller of the present invention in an unfolded state;

Accompanying drawing 3 is the enlarged schematic diagram of part A in Fig. 2;

Accompanying drawing 4 is the enlarged schematic diagram of part B in Fig. 2;

Accompanying drawing 5 is the schematic side view of the children's stroller of the present invention after it is initially folded;

Accompanying drawing 6 is the enlarged schematic diagram of part C in accompanying drawing 5;

Accompanying drawing 7 is the schematic side view of the fully folded children's stroller of the present invention;

Among them: 1. Front bracket; 2. Rear bracket; 3. Seat post; 4. Basket rod; 5. Push rod; 51. Lower push rod; 52. Upper push rod; 52a. Ring flange; 53. Push rod Rod driver (gas spring); 6, slide bar; 6a, lock groove; 7, elastic part (spring); 8, locking part; 81, locking piece seat; 82, locking piece; 82a, locking part; Type slot; 9, unlocking part; 91, slide block; 91a, retaining pin; 92, unlocking handle; 93, traction rope; 10, hook seat; 11, hook; 12, push handle end;

detailed description

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to the children's stroller shown in Fig. 1 to Fig. 7, it includes a vehicle frame with an expanded state and a folded state, and a locking mechanism for locking the vehicle frame in the expanded state. The vehicle frame comprises a front bracket 1, a rear bracket 2 whose upper part is pivotally connected to the upper part of the front bracket 1, a seatpost 3 whose front part is pivotally connected to the front bracket 1, and a front part which is pivotally connected to the rear part of the seatpost 3. The shaft is connected and the rear pivot is connected to the basket rod 4 on the rear support 2.

The vehicle frame also includes a push rod assembly, which includes a push rod 5 that is pivotally connected to the rear bracket 2, a slide rod 6 that slides up and down on the push rod 5, and is used to provide the push rod 6 with respect to the push rod 5. The elastic member 7 with the required elastic recovery force for sliding down, the lower part of the slide bar 6 is pivotally connected with the front part of the basket rod 4 or the rear part of the seat post 3 . In this way, when the vehicle frame is unfolded and the locking mechanism is locked, the slide bar 6 and the push rod 5 are fixed and the elastic member 7 is compressed to be in an energy storage state. Under force, slide downward relative to the push rod 5 and drive the front bracket 1, the rear bracket 2, the seat post 3, the basket rod 4 and the push rod 5 to automatically gather.

Referring to the accompanying drawings, the push rod 5 includes a lower push rod 51, an upper push rod 52 that is telescopic relative to the lower push rod 51, and an upper push rod 52 that is arranged between the upper push rod 52 and the lower push rod 51 to drive the two to be relatively telescopic. The push rod driver 53, wherein the lower push rod 51 is pivotally connected to the rear support 2, and the pivot connection point between the lower push rod 51 and the rear support 2 is located at the pivot between the basket rod 4 and the rear support 2 above the connection point. When the vehicle frame is in the folded state, the upper push rod 52 is shrunk relative to the lower push rod 51, and simultaneously the upper push rod 52 and the slide bar 6 are locked, so that the elastic member 7 is compressed, so that when the push rod driver 53 drives When the upper push rod 52 goes up, the slide bar 6 will go up together with the upper push rod 52 to drive the front bracket 1, the rear bracket 2, the seat post 3, the basket rod 4 and the push rod 5 to expand relatively, thereby realizing the automatic movement of the cart. Expand.

Referring to the drawings, in this embodiment, the sliding rod 6 is disposed in the push rod 5 to slide up and down, and the sliding rod 6 is located between the upper push rod 52 and the lower push rod 51 . What the elastic part 7 adopts is a spring, as shown in Figure 4, the spring is sleeved on the upper push rod 52, and the upper push rod 52 has an annular flange 52a, and the spring 7 is sleeved on the upper push rod 52 and is located in the ring. Between the shaped flange 52a and the top end of the slide bar 6.

Referring to the accompanying drawings, the locking mechanism includes a locking piece 8 arranged between the upper push rod 52 and the slide bar 6 for locking the two. As shown in Figures 3 and 6, the locking piece includes a The locking plate seat 81 at the bottom of the push rod 52, the locking plate 82 swingably arranged on the locking plate seat 81, the locking plate 82 has a locking portion 82a, and the slide bar 6 is provided with a chute (not shown in the figure), When the locking part 8 is locked, the locking part 82a is inserted into the locking groove 6a, and when the locking part is unlocked, the locking plate 82 swings so that the locking part 82a breaks away from the locking groove 6a on the slide bar 6, so that the slide bar 6 can be relatively The push rod 52 slides up and down.

The upper push rod 52 is provided with an unlocking member 9 for unlocking the locking member 8. The unlocking member 9 includes a slide block 91 slidably arranged in the upper push rod 52 and positioned above the lock plate seat 81, and is used to drive the slide block 91. The operating part that slides up is an unlocking handle 92 disposed on the upper push rod 52 , and the unlocking handle 92 is fixedly connected to the slider 91 through a traction cable 93 . A waist-shaped groove 82b is provided on the locking piece 82, and the length direction of the waist-shaped groove 82b is inclined to the length direction of the upper push rod 52. A stop pin 91a is provided on the slider 91, and the stop pin 91a is slidably inserted in the waist-shaped groove. 82b. When the unlocking handle 92 is operated, the traction rope 93 pulls the slider 91 to slide upward along the upper push rod 52, and the stop pin 91a slides upward along the waist-shaped groove 82b so that the locking piece 82 swings inward, so that the locking part 82a is released from the sliding rod 6. The upper lock slot 6a is disengaged to realize the unlocking of the locking member 8.

Referring to the accompanying drawings, there is also a folding hook assembly for locking the two between the upper push rod 52 and the lower push rod 51. The folding hook assembly includes a hook seat 10 fixed on the top of the lower push rod 51, a rotating The hook 11 that is located on the hook seat 10, the push handle end 12 that is fixed on the upper push rod 52, the push handle end 12 has a hook-shaped portion 12a that protrudes outwards, and the hook 11 has a hook-shaped portion. part 12a corresponds to the card slot (not shown in the figure), when the upper push rod 52 is shrunk and folded relative to the lower push rod 51, the hook-shaped part 12a can be locked in the above-mentioned card slot so that the upper push rod 52 and the lower push rod The rod 51 is relatively fixed. What the push rod driver 53 adopts is a gas spring, and when the upper push rod 52 shrinks and folds relative to the lower push rod 51, the folding hook assembly locks both; Under the action of the spring, it automatically expands relative to the lower push rod 51, thereby driving the vehicle frame to automatically expand. During this process, since the spring 7 is in a compressed state, the gas spring 53 does not need to overcome the force of the spring 7, so only a small force is required. The upper push rod 52 can be driven to slide and unfold relative to the lower push rod 51 .

Referring to the accompanying drawings, in this embodiment, the lower part of the slide bar 6 is pivotally connected to the front portion of the basket bar 4, so that when the vehicle frame is unfolded, only the slide bar 6 and the push rod 6 need to be connected by the locking piece 8. Locking between the rods 5 can make the vehicle frame locked in a stable unfolded state. Likewise, the lower part of the slide bar 6, the rear part of the seatpost 3 and the front part of the basket rod 4 can also be pivotally connected via the same rotating shaft.

Of course, it is also possible to pivotally connect the lower part of the slide bar 6 to the rear of the seatpost 4, but in this connection, in addition to the need to set a locking piece between the slide bar 6 and the push bar 5, other locks need to be added. Parts to make the frame as a whole locked in the unfolded state.

The working process of the present embodiment is set forth below in detail:

Referring to Fig. 1 and Fig. 2, the vehicle frame is in the unfolded state, the locking member 8 is locked so that the sliding rod 6 and the upper push rod 52 are locked, the elastic member 7 is compressed between the upper push rod 52 and the sliding rod 6, and the gas spring 53 so that the upper push rod 52 and the lower push rod 51 are relatively expanded; when the vehicle frame needs to be folded, the unlocking handle 92 is first operated to unlock the locking member 8, and under the elastic force of the elastic member 7, the sliding rod 6 is relative to the upper push rod 52 slides down, thereby driving the front bracket 1, the rear bracket 2, the seat post 3, the basket rod 4 and the push rod 5 to automatically draw in, as shown in Figure 5 . Then, press the upper push rod 52 to make it shrink relative to the lower push rod 51, and the upper push rod 52 slides down until the locking portion 82a of the locking piece 82 at its lower end snaps into the lock groove 6a of the slide bar 6, and the locking member 8 is re-locked so that The upper push rod 52 is fixed to the slide bar 6, and at this moment, the elastic member 7 is compressed and is in an energy storage state. Finally, continue to press the upper push rod 52 until the end of the push rod 12 is fixedly hooked with the hook 11 so that the upper push rod 52 and the lower push rod 51 are fixed in the retracted state, and the frame is folded, as shown in FIG. 7 .

When the vehicle frame needs to be unfolded, the operator only needs to rotate the hook 12 to unlock the folding hook assembly. Under the action of the gas spring 53, the upper push rod 52 automatically slides upward relative to the lower push rod 51, and the sliding rod 6 follows the upper push rod 52 Sliding up drives the front bracket 1, the rear bracket 2, the seat post 3, the basket rod 4 and the push rod 5 to rotate relative to each other, so that the vehicle frame is automatically unfolded.

In summary, the children's stroller of the present invention has a small number of rods and a simple structure, which can realize semi-automatic folding and fully automatic unfolding, and is very convenient to operate. Brings great convenience.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. A child stroller, comprising a vehicle frame with an unfolded state and a folded state, and a locking mechanism for locking the vehicle frame in the unfolded state, characterized in that: the vehicle frame includes a front bracket, an upper part and the The upper portion of the front frame is pivotally connected to the rear frame, the seat post is pivotally connected to the front frame, the front portion is pivotally connected to the rear portion of the seat post and the rear portion is pivotally connected to the The basket rod on the rear bracket, the vehicle frame also includes a push rod assembly, the push rod assembly includes a push rod pivotally connected to the rear bracket, a sliding slide provided on the push rod up and down Rod, an elastic member used to provide the elastic restoring force required for the slide bar to slide relative to the push rod, the lower part of the slide bar is pivoted with the front part of the basket rod or the rear part of the seat post connected, when the vehicle frame is in the unfolded state and the locking mechanism is locked, the slide bar and the push rod are mutually locked, and the elastic member is compressed to be in an energy storage state; when the vehicle frame is folded, The locking mechanism is unlocked, and the sliding bar slides downward under the elastic force of the elastic member to drive the front bracket, rear bracket, seat post, basket rod and push rod to automatically fold. 2. The baby stroller according to claim 1, wherein the push rod includes a lower push rod, an upper push rod that is telescopic relative to the lower push rod, and is arranged on the upper push rod and the lower push rod. The push rod driving member used to drive the two relative telescoping, wherein, the lower push rod is pivotally connected to the rear bracket, when the vehicle frame is in the folded state, the upper push rod is relatively The lower push rod shrinks, and the upper push rod is locked with the slide bar, and the elastic member is compressed; when the frame is unfolded, the push rod driver drives the upper push rod upward, The slide bar then goes up and drives the front bracket, the rear bracket, the seat post, the basket rod and the push rod to expand relatively. 3 . The stroller for children according to claim 2 , wherein the slide bar is disposed in the push rod so as to slide up and down, and the slide bar is located between the upper push rod and the lower push rod. 4 . 4. The children's stroller according to claim 3, characterized in that: the elastic member is a spring sleeved on the upper push rod, and the upper push rod has an annular flange, and the spring is located at Between the annular flange and the top end of the sliding rod. 5. The children's stroller according to claim 3, wherein the locking mechanism includes a locking piece arranged between the upper push rod and the sliding bar for locking the two, and the locking piece It includes a locking plate seat fixed on the bottom of the upper push rod, and a locking plate swingably arranged on the locking plate seat. The locking plate has a locking part, and a locking groove is opened on the sliding rod. When the locking part is locked, the locking part is inserted into the locking slot; when the locking part is unlocked, the locking piece swings to make the locking part disengage from the locking slot. 6. The children's stroller according to claim 5, characterized in that: the upper push rod is provided with an unlocking member for unlocking the locking member, and the unlocking member includes a The slider located in the center and above the lock piece seat is used to drive the slider to slide up. The lock piece is provided with a waist-shaped groove, and the length direction of the waist-shaped groove is inclined to the push-up In the length direction of the rod, the slider is provided with a stop pin, and the stop pin is slidably inserted in the waist-shaped groove. When the slider slides up, the stop pin slides along the waist-shaped groove. sliding and driving the locking piece to swing to realize the unlocking of the locking piece. 7. The children's stroller according to claim 6, wherein the operating member includes an unlocking handle arranged on the upper push rod, and a traction handle is fixedly connected between the unlocking handle and the slider. search. 8. The children's stroller according to claim 2, wherein a folding hook assembly for locking the upper push rod and the lower push rod is provided between the upper push rod and the lower push rod, and the push rod driver is A gas spring, after the folding hook assembly is unlocked, the gas spring drives the upper push rod to slide upward relative to the lower push rod so that the vehicle frame is automatically unfolded. 9. The stroller according to claim 8, characterized in that: the folding hook assembly comprises a hook seat fixed on the top of the lower push rod, a hook rotatably arranged on the hook seat, The end of the push handle on the upper push rod, the end of the push handle has a hook-shaped portion protruding outward, and the hook has a card slot for the corresponding insertion of the hook-shaped portion. After the upper push rod is shrunk and folded relative to the lower push rod, the hook-shaped portion is locked in the engaging groove so that the upper push rod and the lower push rod are relatively fixed. 10. The stroller according to any one of claims 2 to 9, characterized in that: the lower part of the sliding rod is pivotally connected to the front part of the basket rod, or the lower part of the sliding rod, the The front portion of the basket rod and the rear portion of the seat post are pivotally connected by the same shaft, and the vehicle frame is locked in the unfolded state by the locking member.