CN205440485U - Children's trolley - Google Patents

Abstract

The utility model discloses a stroller for children, wherein the frame includes a push rod, a front bracket, a rear bracket, a front seat post, a rear seat post and a pull rod, the front part of the front seat post is pivotally connected to the front support and the rear part Has a front joint, the rear of the seat post is pivotally connected to the rear bracket and has a rear joint at the front, which is pivotally connected to the rear joint; the lower part of the tie rod is pivotally connected to the front of the seat post , at least one of the upper part of the front bracket and the lower part of the push rod is pivotally connected to the upper part of the tie rod; There is a backrest locking piece between the joints for locking the two, a frame locking piece for locking the two between the front joint and the rear joint, and a ground for unlocking the frame locking piece and linkage on the frame. Unlock the frame unlock for the backrest lock. The folding operation of the vehicle frame is very simple, and the structure of the vehicle frame after folding is also very compact.

Description

baby stroller

technical field

The utility model relates to a stroller for children.

Background technique

In the prior art, children's strollers usually include a frame with an unfolded state and a folded state, a wheel assembly arranged at the bottom of the frame, a locking mechanism for locking the frame in the unfolded state, a seat arranged on the frame components. At present, the structure of the vehicle frame is various, and the operating principles of folding and unfolding are also different accordingly, and the backrest angle of the seat assembly on most strollers cannot be adjusted, which cannot satisfy children's multi-angle sitting and lying postures. usage requirements.

Contents of the invention

The purpose of the utility model is to provide a children's stroller with a conveniently adjustable backrest angle and convenient folding operation.

In order to achieve the above object, the technical solution adopted by the utility model is: a children's stroller, which includes a foldable frame and a wheel assembly located at the bottom of the frame, and the frame includes a push rod, an upper part and the The lower part of the push rod is pivotally connected to the front bracket, and the upper part is pivotally connected to the rear bracket on the push rod. The vehicle frame also includes a front seat post and a rear seat post extending in the front-rear direction. pivotally connected to the front bracket, the rear of the front seat post has a front joint, the rear of the rear seat post is pivotally connected to the rear bracket, the front of the rear seat post has a rear joint, the front joint is pivotally connected to the rear joint, and the vehicle frame also includes a tie rod, the lower part of the tie rod is pivotally connected to the front part of the rear seat post, and the upper part of the front bracket at least one of the lower portion of the push rod is pivotally connected to the upper portion of the tie rod; the vehicle frame also includes a back bar pivotally connected to the rear seat post or the rear joint , a backrest locking piece for locking both is provided between the backrest bar and the rear joint, a frame locking piece for locking the two is provided between the front joint and the rear joint, the The vehicle frame is also provided with a vehicle frame unlocking part for unlocking the vehicle frame locking part and linkage unlocking the backrest locking part.

Preferably, the backrest locking member includes an elastically expandable lock tongue located at the lower part of the backrest bar, and a locking groove is provided on the rear joint. When the vehicle frame is in an unfolded state and the backrest locking member is locked, The lock tongue is correspondingly inserted into the lock groove so that the backrest bar is fixed relative to the rear seat post.

Further, the frame locking member includes a lock block that is movable left and right on the rear joint, the lock block is located between the front joint and the rear joint, and the lock block faces the front There are lock teeth on the end of the joint, and the end of the lock block facing the rear joint has a wedge-shaped surface. The front joint is provided with a locking groove for the corresponding insertion of the lock teeth. When the vehicle frame When the locking piece is in the locked state, the locking tooth is inserted into the locking groove so that the front joint and the rear joint are fixed to each other, and the wedge-shaped surface is separated from the locking tongue; When the direction moves toward the rear joint, the lock tooth disengages from the locking groove to unlock the frame lock, and at the same time, the wedge-shaped surface drives the lock tongue to disengage from the lock groove to unlock the backrest lock .

Furthermore, the lock slot includes at least one first lock slot located at the front of the rear joint, when the lock tongue is inserted into the first lock slot, the backrest bar and the rear seat There is an acute angle between the rods for leaning forward. The position of the wedge-shaped surface corresponds to the position of the first lock slot. When the frame lock is unlocked, the lock tongue is released from the first lock. Disengage from the groove so that the backrest locking member is unlocked synchronously, and the backrest bar is turned backwards to gradually move closer to the rear seat post.

Furthermore, the lock slot also includes a second lock slot located at the rear of the rear joint, when the lock tongue is inserted into the second lock slot, the gap between the backrest bar and the front seat post There is an acute angle between them and can be leaned against in the opposite direction. The first lock slot and the second lock slot are respectively provided with one or more, and all the first lock slots and the second lock slots are in the rear The joints are arranged sequentially along the front and rear directions, and the backrest bar is also provided with a backrest unlocking part for unlocking the backrest locking part to adjust the inclination state of the backrest bar.

As a specific implementation, the backrest bar is pivotally connected to the rear joint through a pin shaft, and all the first lock slots and second lock slots are pivoted around the pin shaft on the rear joint. The arc directions of the heart lines are distributed in sequence.

As a specific implementation manner, there are multiple first lock grooves arranged sequentially along the front and rear directions, and correspondingly, there are also multiple wedge-shaped surfaces, and the multiple wedge-shaped surfaces are combined with the multiple first lock grooves. There is a one-to-one correspondence between the positions of the lock slots.

Further, the frame unlocking member includes an unlocking handle for driving the lock block to move in the left and right directions, the unlocking handle is pivotally connected to the rear joint through a first shaft and is located at the same position as the front joint. On the different side of the rear joint, the lock block has a connecting shaft extending in the left and right direction, the connecting shaft passes through the rear joint and is pivotally connected to the unlocking handle through a second shaft. The first shaft is arranged parallel to the axis of the second shaft, and the connecting shaft part is further provided with an elastic member for providing elastic restoring force of the locking block along its moving direction.

Furthermore, the upper end of the unlocking handle is pivotally connected to the rear joint through the first shaft, the first shaft is located above the second shaft, when the lower end of the unlocking handle is turned upwards The frame lock is driven to be unlocked synchronously with the backrest lock.

Preferably, the upper part of the front bracket, the lower part of the push rod and the upper part of the pull rod are pivotally connected at the same place.

Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art: In the children's stroller of the utility model, the frame unlocking part can unlock the backrest locking part in linkage when unlocking the frame locking part. The rods on the rear frame can be automatically moved together, and can be folded in one lift, so that the folding operation of the frame is very convenient, and the folded frame has a compact structure and takes up less space.

Description of drawings

Accompanying drawing 1 is the three-dimensional view that the children's stroller of the present invention is in the unfolded state;

Accompanying drawing 2 is the side view of the children's stroller of the present utility model in the unfolded state;

Accompanying drawing 3 is the side view of the children's stroller of the present invention in a half-folded state;

Accompanying drawing 4 is the side view of the children's stroller of the present utility model in a folded state;

Accompanying drawing 5 is the schematic diagram of the connection of the front and rear seat posts and the backrest bar of the children's stroller of the present invention;

Accompanying drawing 6 is the structural decomposition diagram of accompanying drawing 5;

Accompanying drawing 7 is the enlarged schematic diagram of part A in Fig. 6;

Accompanying drawing 8 is the structural representation after removing the joint in accompanying drawing 5;

Accompanying drawing 9 is the enlarged schematic diagram of part B in Fig. 8;

Accompanying drawing 10 is the side view of accompanying drawing 5, wherein the back bar can be leaned forward;

Accompanying drawing 11 is the schematic diagram in the conversion process of backrest bar angle in accompanying drawing 10;

Accompanying drawing 12 is the schematic diagram after the backrest bar angle conversion in accompanying drawing 11;

Accompanying drawing 13 is the schematic view after removing the front seatpost and the front connector in the accompanying drawing 5, wherein the frame lock is locked;

Accompanying drawing 14 is the side view of accompanying drawing 13;

Accompanying drawing 15 is along the C-C in Fig. 14, the sectional structure enlarged view;

Accompanying drawing 16 is a schematic diagram after removing the front seat post and the front joint in the accompanying drawing 5, wherein the frame lock is unlocked;

Accompanying drawing 17 is the side view of accompanying drawing 16;

Accompanying drawing 18 is the enlarged view of the sectional structure along D-D in Fig. 17;

Among them: 1. Front bracket; 2. Rear bracket; 3. Push rod; 4. Front seat post; 5. Rear seat post; 6. Pull rod; 7. Front joint; 7a, locking groove; 8. Rear joint; A lock slot; 8b, second lock slot; 9, backrest rod; 10, frame unlocking piece (unlocking handle); 11, backrest unlocking piece; 12, lock tongue; 13, lock block; 13a, lock teeth; 13b, wedge-shaped surface; 13c, connecting shaft; 14, elastic member (spring); 15, pin shaft; 16, first shaft; 17, second shaft.

detailed description

The technical solution of the present utility model will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

Referring to the accompanying drawings, a stroller for children includes a foldable vehicle frame and a wheel assembly arranged at the bottom of the vehicle frame. The vehicle frame includes a front bracket 1, a rear bracket 2, and a push rod 3. The top of the front bracket 1 is pivotally connected to the bottom of the push rod 3, and the top of the rear bracket 2 is pivotally connected to the push rod 3.

The vehicle frame also includes a front seat post 4 extending in the front-rear direction, a rear seat post 5, and a pull rod 6 extending in the up-down direction. Connected on the rear bracket 2, the rear of the front seat post 4 has a front joint 7, and the rear of the rear seat post 5 has a rear joint 8, the front joint 7 and the rear joint 8 are pivotally connected, and the lower part of the tie rod 6 is pivoted Connected on the rear seat post 5, at least one of the upper part of the front bracket 1 and the lower part of the push rod 3 is pivotally connected with the upper part of the pull rod 6. In this embodiment, the upper part of the pull rod 6 is connected to the front bracket. The upper part of 1 and the lower part of push rod 3 are pivotally connected to the same place. Like this, a four-bar linkage mechanism is formed between the front support 1, the front seat post 4, the rear seat post 5 and the pull rod 6, and another four-bar linkage mechanism is formed between the pull bar 6, the rear seat post 5, the rear support 2 and the push rod 3. , by locking one of the four-bar linkages, the two four-bar linkages can be locked at the same time, so that the front bracket 1, the rear bracket 2, the push rod 3, the front seat post 4, the rear seat post 5, and the tie rod 6 Mutual locking, that is, the locking of the main body of the frame is realized.

The vehicle frame also includes a back bar 9 pivotally connected to the rear seat post 5 or the rear joint 8 , and in this embodiment the back bar 9 is pivotally connected to the rear joint 8 through a pin 15 . A backrest locking piece for locking the two is provided between the back bar 9 and the rear joint 8, a vehicle frame locking piece for locking the two is provided between the front joint 7 and the rear joint 8, and a vehicle frame is also provided for locking the two. A vehicle frame unlocking part that unlocks the vehicle frame locking part and can unlock the backrest locking part in conjunction. In this way, when the vehicle frame unlocking part is operated, the vehicle frame locking part and the backrest locking part can be unlocked synchronously, so that the vehicle frame can be folded.

Specifically, as shown in Fig. 5 to Fig. 12, the backrest locking member includes an elastically expandable lock tongue 12 located at the bottom of the backrest rod 9, and a locking groove is provided on the rear joint 8. When the vehicle frame is in the unfolded state and the backrest locking member is locked , the lock tongue 12 is correspondingly inserted into the lock groove so that the backrest bar 9 is fixed relative to the rear seat post 5 . Referring to Fig. 5 to Fig. 9, Fig. 13 to Fig. 18, the frame locking member includes a lock block 13 which is movable left and right and is arranged on the rear joint 8. The lock block 13 is located between the front joint 7 and the rear joint 8, and the lock The end of the block 13 facing the front joint 7 has locking teeth 13a, the end of the locking block 13 facing the rear joint 8 has a wedge-shaped surface 13b, and the front joint 7 is provided with a locking groove 7a for corresponding insertion of the locking teeth 13a. When the frame is unfolded and the frame lock is in the locked state, the locking teeth 13a are correspondingly inserted into the locking grooves 7a so that the front joint 7 and the rear joint 8 are fixed to each other, and at this time the wedge-shaped surface 13b is separated from the lock tongue 12; When the lock block 13 moves toward the rear joint 8 in the left and right direction, the lock tooth 13a gradually moves away from the front joint 7 and breaks away from the locking groove 7a, so that the frame lock is unlocked, and at the same time, the wedge surface 13b can gradually resist the bottom of the lock tongue 12 and The locking tongue 12 is driven to shrink elastically and gradually break away from the locking groove, thereby realizing the linkage unlocking of the backrest locking member.

In this embodiment, the lock grooves include a plurality of first lock grooves 8a located at the front of the rear connector 8, and a plurality of second lock grooves 8b located at the rear of the rear connector 8, and all the first lock grooves 8a are connected with the second lock grooves. The slots 8b are arranged sequentially along the front and rear directions, and are arranged in sequence in the arc direction around the axis of the pin shaft 15, so that when the back bar 9 rotates around the pin shaft 15, the lock tongue 12 can be inserted into one of the first lock slots 8a or One of the second lock slots 8b. When the lock tongue 12 is inserted in the first lock groove 8a, the backrest bar 9 and the rear seat post 5 form an acute angle and can be leaned forward, so that the seat can be used in a forward sitting position, as shown in Figures 10 to 12 ; When the deadbolt 12 is inserted in the second lock groove 8b, an acute angle is formed between the backrest bar 9 and the front seat post 4, which can be used for reverse leaning, so that the seat can be used in a reverse sitting position. The backrest rod 9 is also provided with a backrest unlocking part 11 for unlocking the backrest locking part. The backrest unlocking part 11 can use components such as a traction cable and a spring to drive the elastic expansion and contraction of the deadbolt 12, so that the deadbolt 12 can be inserted into the lock groove or disengaged. lock slot. In this way, when the vehicle frame is in the unfolded state, the backrest locking member can be unlocked by operating the backrest unlocking member 11, so that the lock tongue 12 can be transformed between a plurality of first lock grooves 8a and a plurality of second lock grooves 8b, thereby adjusting The forward and reverse leaning state of the backrest bar 9 and the inclination angle of the backrest bar 9 make the seat on the vehicle frame available for forward and reverse use and leaning against at different angles under the forward and reverse use state.

Referring to Fig. 5 to Fig. 9, Fig. 13 to Fig. 18, in this embodiment, there are multiple wedge-shaped surfaces 13b on the lock block 13, the number of which corresponds to the number of the first lock slots 8a, and this number The positions of each wedge-shaped surface 13b correspond to the positions of the plurality of first lock grooves 8a one-to-one. When the vehicle frame is in the unfolded state and the back bar 9 is leaning forward, that is, when the lock tongue 12 is correspondingly inserted in one of the first lock slots 8a, the lock block 13 is driven to move toward the rear joint 8 in the left and right directions. , the lock teeth 13a will gradually disengage from the locking groove 7a to unlock the frame lock, and at the same time the wedge-shaped surface 13b cooperates with the lock tongue 12 to make the lock tongue 12 disengage from the first lock groove 8a to realize the linkage unlocking of the backrest lock. After the backrest lock is unlocked, the backrest bar 9 can be turned back automatically due to its own gravity and draws closer to the rear seat post 5 .

Referring to Fig. 5 to Fig. 9 and Fig. 13 to Fig. 18, the frame unlocking member includes an unlocking handle 10 arranged on the rear joint 8 for driving the lock block 13 to move in the left and right direction, and the unlocking handle 10 passes through the first shaft 16 The pivot is connected to the rear joint 8, and the unlocking handle 10 and the front joint 7 are respectively located on different sides of the rear joint 8. The lock block 13 has a connecting shaft portion 13c extending in the left-right direction. The connecting shaft portion 13c passes through the rear joint 8 and is pivotally connected to the unlocking handle 10 through the second shaft 17. The axes of the first shaft 16 and the second shaft 17 The connecting shaft 13c is also provided with an elastic member for providing the elastic restoring force of the locking block 13 along its moving direction. Here, the elastic member is a spring 14 sleeved on the connecting shaft 13c. When the frame lock is locked, the elastic force of the spring 14 makes the locking tooth 13a stably in the locking groove 7a so that the frame lock remains in a stable locked state, when the unlocking handle 10 is turned to drive the lock block 13 towards the rear When the joint 8 moves, the locking block 13 overcomes the elastic force of the spring 14 to disengage the locking tooth 13 a from the locking groove 7 a and at the same time disengage the locking tongue 12 from the first locking groove 8 a.

In this embodiment, as shown in Figures 15 and 18, the upper end of the unlocking handle 10 is pivotally connected to the rear joint 8 through the first shaft 16, and the first shaft 16 is located above the second shaft 17. When the unlocking handle 10 is When the lower end is turned upwards, the vehicle frame locking part and the backrest locking part can be unlocked synchronously. In this way, a carrying strap is set between the unlocking handles 10 on both sides of the vehicle frame, and when the carrying strap is pulled up, the unlocking handles 10 on both sides can be turned up synchronously, so that the vehicle frame locking parts on both sides and the backrest locking parts Unlock to enable folding of the frame.

When the stroller of this embodiment is unfolded, as shown in Fig. 1 and Fig. 2, the frame lock is locked so that the front seat post 4 and the rear seat post 5 are locked, so that the front bracket 1, the rear bracket 2, and the push rod 3 , the front seat post 4, the rear seat post 5, and the pull rod 6 are locked to each other, and the main body of the vehicle frame is in a stable unfolded state. At this time, the user can unlock the backrest locking part by operating the backrest unlocking part 11, and rotate the backrest post 9. Lock again, thereby adjust the inclination angle of backrest bar 9 and forward and reverse leaning state.

When the vehicle frame needs to be folded up, it is necessary to adjust the backrest bar 9 to the forward leaning state. The operator only needs to pick up the straps (not shown) between the unlocking handles 10 on both sides. The lock block 13 slides towards the rear joint 8 at the same time to unlock the frame lock, and at the same time makes the lock tongue 12 disengage from the first lock groove 8a to realize the synchronous unlocking of the backrest lock. In this way, the backrest bar 9 gradually moves closer to the rear seat post 5 due to the automatic backturn of gravity, and the push rod 3 gradually moves closer to the rear bracket 2 due to the backturn of its own weight. Under the action of the belt, it moves upwards gradually, so that the front bracket 1 and the rear bracket 2 gradually move closer together along the front and rear directions, as shown in FIG. 3 . Finally, the front bracket 1, the rear bracket 2, the push rod 3, the front seat post 4, the rear seat post 5 and the back bar 9 are close together, and the folded vehicle frame is shown in Figure 4, which has a compact structure and takes up less space , the folding operation process is simple, and it can be folded in one carry.

To sum up, the structure of the children's stroller of the present utility model is simple, and the seat on the frame has a positive sitting posture use state and a reverse sitting posture use state. When the seat is in the forward sitting posture use state, operating the unlocking handle 10 can make The locking part of the frame and the locking part of the backrest are unlocked synchronously, so that the rods on the frame are automatically moved together, and the folding operation is very convenient.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present utility model, and its purpose is to enable those familiar with this technology to understand the content of the present utility model and implement it accordingly, and not to limit the protection scope of the present utility model. All equivalent changes or modifications made according to the spirit of the utility model shall fall within the protection scope of the utility model.

Claims (10)

1. A children's stroller, comprising a foldable vehicle frame, a wheel assembly located at the bottom of the vehicle frame, the vehicle frame comprising a push rod, a front bracket whose upper part is pivotally connected to the lower part of the push rod, The rear bracket whose upper part is pivotally connected to the push rod is characterized in that the vehicle frame also includes a front seat post and a rear seat post extending in the front-to-rear direction, and the front part of the front seat post is pivotally connected to the front seat post. On the bracket, the rear portion of the front seat post has a front joint, the rear portion of the rear seat post is pivotally connected to the rear bracket, the front portion of the rear seat post has a rear joint, and the front joint is connected to the The rear joints are pivotally connected, the vehicle frame also includes a tie rod, the lower part of the tie rod is pivotally connected to the front part of the rear seat post, and the upper part of the front bracket is connected to the lower part of the push rod. at least one of the two is pivotally connected to the upper portion of the tie rod; the vehicle frame also includes a back bar pivotally connected to the rear seat post or the rear joint A backrest lock for locking the two is provided between the rear joints, a frame lock for locking the two is provided between the front joint and the rear joint, and a lock for unlocking is provided on the frame. The frame locking part is linked to unlock the frame unlocking part of the backrest locking part. 2. The children's stroller according to claim 1, characterized in that: the backrest locking member includes an elastically expandable lock tongue located at the lower part of the backrest bar, and a locking groove is provided on the rear joint, and the backrest lock is provided on the backrest bar. When the vehicle frame is in the unfolded state and the backrest locking member is locked, the lock tongue is correspondingly inserted into the lock slot so that the backrest bar is fixed relative to the rear seat post. 3. The children's stroller according to claim 2, wherein the frame locking member includes a lock block that is movable left and right on the rear joint, and the lock block is located between the front joint and the rear joint. Between the rear joints, the lock block has lock teeth on the end facing the front joint, and the end of the lock block facing the rear joint has a wedge-shaped surface. The locking teeth are correspondingly inserted into the locking slots. When the frame lock is in the locked state, the locking teeth are inserted into the locking slots so that the front joint and the rear joint are fixed to each other. The wedge when the lock block moves toward the rear joint in the left and right direction, the lock tooth disengages from the locking groove to unlock the frame lock, and at the same time, the wedge-shaped surface drives the The lock tongue breaks away from the lock groove so that the backrest locking piece is unlocked in linkage. 4. The children's stroller according to claim 3, wherein the lock slot includes at least one first lock slot located at the front of the rear connector, when the lock tongue is inserted into the first lock When in the slot, the backrest bar and the rear seat post form an acute angle for leaning forward, the position of the wedge-shaped surface corresponds to the position of the first lock slot, when the frame lock When unlocking, the lock tongue is disengaged from the first lock groove so that the backrest locking member is unlocked synchronously, and the backrest bar is turned backwards to gradually approach the rear seat post. 5. The children's stroller according to claim 4, wherein the lock slot further includes a second lock slot located at the rear of the rear connector, when the lock tongue is inserted into the second lock slot When in the middle position, the backrest bar and the front seat post form an acute angle and can be leaned against in the opposite direction. The first lock slot and the second lock slot are respectively provided with one or more, and all the first The lock groove and the second lock groove are arranged sequentially along the front-to-rear direction on the rear joint, and the backrest bar is also provided with a backrest unlocking part for unlocking the backrest locking part to adjust the inclination state of the backrest bar . 6. The children's stroller according to claim 5, wherein the backrest bar is pivotally connected to the rear joint through a pin shaft, and all the first lock grooves and the second lock grooves are in the The arc directions around the axis of the pin shaft on the rear joint are distributed sequentially. 7. The children's stroller according to claim 4, wherein there are multiple first locking slots arranged sequentially along the front and rear directions, correspondingly there are multiple wedge-shaped surfaces, and the multiple said The positions of the wedge-shaped surface and the plurality of first locking grooves correspond one-to-one. 8. The children's stroller according to claim 3, wherein the frame unlocking member includes an unlocking handle for driving the lock block to move in the left and right directions, and the unlocking handle is pivotally connected by a first shaft On the rear joint and on the different side of the rear joint from the front joint, the lock block has a connecting shaft portion extending in the left and right direction, and the connecting shaft portion passes through the rear joint and passes through the second joint. The two shafts are pivotally connected to the unlocking handle, the first shaft is arranged parallel to the axis of the second shaft, and the connecting shaft is provided with a spring for providing the lock block with elasticity along its moving direction. Resilient elastic member. 9. The children's stroller according to claim 8, wherein the upper end of the unlocking handle is pivotally connected to the rear joint through the first shaft, and the first shaft is located on the second shaft When the lower end of the unlocking handle is turned up, the frame lock is unlocked synchronously with the backrest lock. 10 . The stroller for children according to claim 1 , wherein the upper part of the front bracket, the lower part of the push rod and the upper part of the pull rod are pivotally connected at the same place. 11 .