CN104986204B - stroller - Google Patents

Abstract

The invention discloses a baby stroller. A stroller frame comprises a front support, a rear support, a front connecting rod and a rear connecting rod, wherein the upper portion of the rear support is connected with the upper portion of the front support in a pivoted mode, and the front connecting rod and the rear connecting rod are arranged between the front support and the rear support. The front portion of the front connecting rod is connected to the front support in a pivoted mode. The rear portion of the rear connecting rod is connected to the rear support in a pivoted mode. The rear portion of the front connecting rod is connected with the front portion of the rear connecting rod in a pivoted mode. An elastic piece which can unfold the front connecting rod and the rear connecting rod relatively to extend the front connecting rod and the rear connecting rod in the same linear direction is arranged between the front connecting rod and the rear connecting rod. When the stroller frame is in the unfolded state, the front connecting rod and the rear connecting rod extend in the same linear direction under the effect of the elastic piece, and the front support, the rear support, the front connecting rod and the rear connecting rod form a triangular structure. When the stroller frame is in the folded state, the front connecting rod and the rear connecting rod overcome elasticity of the elastic piece to turn over relatively so as to get close and be folded between the front support and the rear support. The baby stroller is convenient to unfold and fold, and convenience is brought to daily use of a user.

Description

stroller

technical field

The invention relates to a stroller for children.

Background technique

In the prior art, children's strollers usually include a stroller frame with an unfolded state and a folded state, a wheel assembly arranged at the bottom of the stroller frame, and a locking mechanism for locking the stroller frame in the unfolded state. . At present, there are many types of children's strollers on the market, and the structures of their frames are also varied. Correspondingly, the number of rods and the connection methods between the rods are also different, resulting in different principles of folding and unfolding of each stroller. Each is different, and so is the ease of use.

Contents of the invention

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

In order to achieve the above object, the technical scheme adopted in the present invention is:

A stroller for children, comprising a stroller frame having an unfolded state and a folded state, a wheel assembly arranged at the bottom of the stroller frame, and a locking mechanism for locking the stroller frame in the unfolded state, The cart frame includes a front bracket, a rear bracket whose upper part is pivotally connected to the upper part of the front bracket, a front link and a rear link arranged between the front bracket and the rear bracket, the The front of the front link is pivotally connected to the front bracket, the rear of the rear link is pivotally connected to the rear bracket, and the rear of the front link is connected to the front of the rear link. The parts are pivotally connected, and an elastic member is provided between the front link and the rear link so that the two can be relatively expanded and extend along the same straight line. When the cart frame is in the unfolded state, the The front connecting rod and the rear connecting rod extend along the same linear direction under the action of the elastic member, and a triangular structure is formed between the front bracket, the rear bracket, the front connecting rod and the rear connecting rod; when the cart When the vehicle frame is in the folded state, the front connecting rod and the rear connecting rod overcome the elastic force of the elastic member and overturn relative to each other and are folded between the front bracket and the rear bracket.

Preferably, when the stroller frame is folded, the rear portion of the front link and the front portion of the rear link move upward to gradually approach each other.

Preferably, the elastic member is a torsion spring arranged between the front link and the rear link, and the two ends of the torsion spring respectively bear against the front link and the rear link.

Preferably, the locking mechanism includes a locking assembly arranged between the rear bracket and the rear connecting rod, the locking assembly includes a fixed block fixedly arranged on the rear bracket, along the rear connecting rod The length extension direction is slidably arranged on the slider on the rear connecting rod, one of the two parts of the fixed block and the slider is provided with a locking groove, and the other part is provided with a locking groove that can move forward and backward. The lock tongue is inserted into the lock slot in a directional fit. When the lock tongue is inserted into the lock slot, the lock piece is locked; when the lock tongue is disengaged from the lock slot, the lock piece unlock.

Further, the sliding member is a sliding sleeve slidably arranged on the rear connecting rod, the locking tongue is arranged at the front part of the sliding sleeve, the locking groove is opened on the fixing block, and the The rear connecting rod is also provided with an unlocking part for driving the sliding sleeve to slide back and forth to control the working state of the locking assembly.

Preferably, the cart frame is further provided with a folding hook for locking the cart frame in the folded state, and when the cart frame is in the folded state, the folding hook hooks Hanging between at least two rods in the front bracket, the rear bracket, the front connecting rod and the rear connecting rod.

Further, the rear support includes rear support rods located on the left and right sides respectively, and a cross bar connected between the rear support rods on both sides, the rear connecting rod is U-shaped with the opening facing forward, and the folding One end of the hook is connected to the rear portion of the rear link, and when the cart frame is in a folded state, the other end of the folding hook is fixedly hooked on the cross bar.

Preferably, the rear part of the rear link has a folding operation part extending backwards, when the cart frame is folded, it acts on the folding operation part to drive the rear link to turn over relative to the rear bracket to make It gradually moves closer to the front support rod and drives the front support and rear support to gradually move closer together in the front-to-back direction; when the cart frame is folded, step down on the rear part of the rear basket rod to realize the Folding of the stroller frame.

Further preferably, the front connecting rod is a front basket rod, and the rear connecting rod is a rear basket rod. When the cart frame is in the unfolded state, the front basket rod and the rear basket The rods extend in a front-to-rear direction to form a basket frame; when the stroller frame is folded, the rear portion of the rear basket rod is stepped down to effect the folding of the stroller frame.

Preferably, the cart frame further includes a push rod, the push rod is slidably connected to the front support along the length extension direction of the front support, and there is a function between the push rod and the front support. For the push rod lock that locks both.

Further, the push rod includes push rod rods located on the left and right sides respectively, and push handles arranged on the upper ends of the push rod rods on both sides, and the front bracket includes front support rods respectively located on the left and right sides, so On each side of the cart frame, the push rod rods are respectively slidably inserted in the rod cavities of the front struts.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art: when the cart is folded up, only the locking mechanism needs to be unlocked, and then the front connecting rod and the rear connecting rod are forced to overcome the elastic force of the elastic member. Flip over to make the front bracket, rear bracket, front link and rear link gradually close together to realize the folding of the cart frame; when the cart needs to be unfolded for use, only need to release the folded lock, then The front connecting rod and the rear connecting rod are automatically deployed under the elastic acting force of the elastic member, so that the cart frame is automatically deployed. The baby stroller has good stability in the unfolded state, the unfolding and folding operations of the stroller frame are very simple, and the folded structure is very flat, which brings convenience to the daily use of the user.

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 the side view of the children's stroller of the present invention 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 stroller of the present invention in a folded state;

Accompanying drawing 5 is the perspective view of the children's stroller of the present invention in a folded state;

Accompanying drawing 6 is the enlarged schematic diagram of part A in Fig. 5;

Accompanying drawing 7 is the enlarged schematic diagram of part B in Fig. 5;

Among them: 100, cart frame; 1, front support; 11, front support rod; 2, rear support; 21, rear support rod; 22, cross bar; 23, hanging column; 3, front connecting rod (front basket rod); 3a, front connector; 34, rotating shaft; 4, rear connecting rod (rear basket rod); 4a, rear connector; 5, push rod; 51, push rod rod; 52, push handle; 6, Elastic part (torsion spring); 7. Locking assembly; 71. Slider (sliding sleeve); 72. Fixed block; 73. Lock tongue; 74. Lock groove; 8. Unlocking part (unlocking pedal); 9. Folding hook; 10, front wheel; 20, rear wheel; 200, seat assembly.

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 Figures 1 to 5, it includes a stroller frame 100 in an unfolded state and a folded state, and a wheel assembly located at the bottom of the stroller frame 100 for locking the stroller frame in the unfolded state. down locking mechanism.

The stroller frame 100 includes a front support 1, a rear support 2, a front link 3, a rear link 4 and a push rod 5, and the wheel assembly includes front wheels 10 respectively positioned at the bottom of the front support 1 and front wheels 10 located at the bottom of the rear support 2 respectively. Rear wheels 20 on both sides. The upper part of the front bracket 1 is pivotally connected to the upper part of the rear bracket 2, the front part of the front link 3 is pivotally connected to the front bracket 1, and the rear part of the rear link 4 is pivotally connected to the rear bracket 2. The rear portion of the rod 3 is pivotally connected to the front portion of the rear link 4, so that a four-bar linkage mechanism is formed between the front support 1, the rear support 2, the front link 3 and the rear link 4, wherein the front link 3 An elastic member 6 is provided between the rear connecting rod 4 and enables the two to expand relative to each other and extend along the same straight line. When the cart frame 100 is unfolded, under the elastic force of the elastic member 6, the front link 3 and the rear link 4 extend along the same straight line, so that the front bracket 1, the rear bracket 2, the front link 3 and the rear link A triangular structure is formed between the rods 4; when the cart frame 100 is folded, the front link 3 and the rear link 4 overcome the elastic force of the elastic member 6 and move closer relative to each other, so that the front link 3 and the rear The connecting rod 4 is folded between the front bracket 1 and the rear bracket 2 .

In this embodiment, the elastic member 6 is a torsion spring 6 disposed between the front link 3 and the rear link 4 . Referring to Fig. 2, the rear part of the front link 3 is fixed with a front joint part 3a, and the front part of the rear link 4 is fixed with a rear joint part 4a, and a rotating shaft 34 is passed between the front joint part 3a and the rear joint part 4a. They are pivotally connected, and the torsion spring 6 is sheathed on the rotating shaft 34, and the two ends of the torsion spring 6 are respectively resisted on the inner cavity walls of the front joint part 3a and the rear joint part 4a.

Referring to the drawings, on the stroller frame 100 , the locking mechanism includes a locking assembly 7 arranged between the rear bracket 2 and the rear connecting rod 4 . Referring to Fig. 5 and Fig. 6, the locking assembly 7 includes a fixed block 72 fixedly arranged on the rear bracket 2, a sliding piece 71 arranged on the rear link 4 to slide along the length extension direction of the rear link 4, One of the two parts of the slider 71 and the fixed block 72 is provided with a lock groove 74, and the other part is provided with a dead bolt 73 that can be inserted into the lock groove 74 along the front and rear directions. When the dead bolt 73 is inserted into the lock When the lock tongue 73 is in the slot 74, the locking assembly 7 is locked; when the lock tongue 73 is disengaged from the lock slot 74, the locking assembly 7 is unlocked. Here, the sliding member 71 is a sliding sleeve 71 slidably sleeved on the rear connecting rod 4, the locking tongue 73 is fixed on the front end of the sliding sleeve 71, and the locking groove 74 is arranged on the fixing block 72 with its notch facing backward. , when the stroller frame 100 is unfolded, the sliding sleeve 71 slides forward along the rear link 4 so that the lock tongue 73 can be inserted into the lock groove 74 forward, so that the front bracket 1, the rear bracket 2, the front link 3 and the The rear connecting rods 4 are mutually locked to form a stable triangular structure; and when the sliding sleeve 71 slides backward along the rear connecting rod 4, the locking tongue 73 can be disengaged from the locking groove 74 to unlock the locking assembly 7, thereby making the front The four-link mechanism formed between the support 1, the rear support 2, the front connecting rod 3 and the rear connecting rod 4 can be turned over and folded in an active state. In specific setting, the above-mentioned locking assembly 7 should be provided with an elastic component so that the lock tongue 73 can be inserted into the lock slot 74 stably, so that the locking assembly 7 can be stably kept in the locked state.

Referring to the drawings, the rear connecting rod 4 is also provided with an unlocking member 8 for driving the sliding sleeve 71 to slide back and forth to control the working state of the locking assembly 7, where the unlocking member 8 is rotatably arranged at the rear end of the rear connecting rod 4 Unlocking pedal 8, the unlocking pedal 8 is connected with the sliding sleeve 71 on both sides of the rear connecting rod 4 through a traction cable, under no external force, the dead bolt 73 cooperates with the lock groove 74 to realize the unlocking of the locking assembly, and When unlocking is required, the operator only needs to step on the unlocking pedal 8 at the rear of the cart frame 100 to drive the sliding sleeve 71 to slide backward along the rear link 4 to unlock the locking assembly 7 .

The rear portion of the rear link 4 has a folding operation part extending backwards, so that when folding, the operator acts on the folding operation part at the rear of the cart so that the rear link 4 is turned over relative to the rear bracket 2, and the front link 3 can be turned over. It turns over relative to the rear connecting rod 4 and gradually moves closer, and drives the front support 1 and the rear support 2 to gradually move closer together along the front and rear directions, so as to realize the folding of the stroller frame 100 . In this embodiment, when the stroller frame 100 is folded, the rear portion of the front link 3 and the front portion of the rear link 4 move upwards at the same time and gradually move closer to each other, so that not only can the folded stroller frame 100 All the rods can be close together, which can also make the stroller frame 100 have a good load-bearing capacity when unfolded.

Here, referring to Fig. 1 to Fig. 5, the front connecting rod 3 is a front basket rod, the rear connecting rod 4 is a rear basket rod, the front basket rod 3 is U-shaped with the opening facing backward, and the rear basket rod 4 is a U-shaped opening facing forward. The front bracket 1 includes front struts 11 respectively located on the left and right sides, the rear bracket 2 comprises rear struts 21 respectively located on the left and right sides, a cross bar 22 fixedly connected between the rear struts 21 on both sides, and the front basket rod Both sides of the front part of 3 are pivotally connected to the front struts 11 on both sides respectively, and both sides of the rear part of the rear basket rod 4 are pivotally connected to the rear struts 21 on both sides respectively. Both sides of the front basket rod 3 and the rear basket rod 4 are respectively connected to extend along the front and rear directions, so as to form a basket frame when the stroller frame 100 is unfolded. The part of the rear basket rod 4 behind the rear bracket 2 forms the above-mentioned folding operation part, and the unlocking pedal 8 is arranged at the end of the rear basket rod 4 . In this way, when the operator steps on the unlocking pedal 8, while unlocking the locking assembly 7, the rear portion of the rear basket rod 4 is also driven downward to overturn the rear basket rod 4, and the front portion of the rear basket rod 4 is upwardly moved, so that the front basket The basket rod 3 and the rear basket rod 4 overcome the elastic force of the torsion spring 6 to overturn relative to each other, and the rear part of the front basket rod 3 and the front part of the rear basket rod 4 move upwards and gradually move closer together. Gather it between the front support 1 and the rear support 2.

Referring to the accompanying drawings, on the trolley frame 100, the push rod 5 can be slidably connected to the front support 1 along the length extension direction of the front support 1. or locked push rod lock (not shown in the figure), in this embodiment, the push rod 5 includes push rod rods 51 respectively located on the left and right sides, and push rods located on the upper parts of the push rod rods 51 on both sides. 52 , on each side of the stroller frame 100 , the push rod rods 51 are slidably inserted in the rod cavities of the front strut 11 . When the stroller frame 100 is unfolded, the push rod rod 51 protrudes from the rod cavity of the front strut 11, and when the stroller frame 100 is folded, the push rod rod 51 is retracted into the rod cavity of the front strut 11 .

5 and 7, the cart frame 100 is also provided with a folding locking structure for locking the cart frame 100 in the folded state, where the folding locking structure is a folding hook 9, when the cart When the frame 100 is in the folded state, the folding hook 9 is hooked between at least two rods in the front bracket 1, the rear bracket 2, the front connecting rod 3 and the rear connecting rod 4 along the front and rear direction, so that the four rods It cannot be rotated relative to each other and is kept in a folded state stably. In this embodiment, the rear end of the folding hook 9 is rotatably arranged at the rear of the rear link 4. When the cart frame 100 is folded, the front of the folding hook 9 can be fixedly hooked to the rear bracket 2. On the cross bar 22 , here the cross bar 22 is fixedly provided with a position-limiting hanging post 23 , and the front portion of the folding hook 9 can be hooked on the hanging post 23 cooperatively.

When the cart frame 100 is in the expanded state, the front link 3 and the rear link 4 are relatively expanded under the force of the torsion spring 6 and extend along the front and rear directions, and the locking tongue 73 in the locking assembly 7 is correspondingly inserted into the lock groove. In 74, the rear bracket 2 and the rear connecting rod 4 are mutually fixed, so that a stable triangular structure is formed between the front bracket 1, the rear bracket 2, the front connecting rod 3 and the rear connecting rod 4; at the same time, the push rod 5 The rod part 51 protrudes from the front support rod 11 and unfolds relative to the front bracket 1, and the push rod 5 and the front bracket 1 are locked by the push rod locking member, and the cart frame is in a stable unfolded state, see Fig. 1, Fig. 2.

When the stroller frame 100 needs to be folded up, first unlock the push rod locking part and put the push rod part 51 of the push rod 5 into the rod cavity of the front support rod 11, so that the push rod 5 is folded relative to the front support 1 Then, the operator steps on the unlocking pedal 8 from the rear of the cart frame 100, and the unlocking pedal 8 drives the sliding sleeve 71 to slide backwards along the rear connecting rod 4, so that the dead bolt 73 on the sliding sleeve 71 is gradually released from the fixed block. 72 in the lock groove 74 to unlock the locking assembly 7; continue to step on the unlocking pedal 8, the rear part of the rear link 4 descends and gradually overturns relative to the rear bracket 3, and the front part of the rear link 4 moves upwards, making the front The connecting rod 3 and the rear connecting rod 4 overcome the elastic force of the torsion spring 6 and turn over relatively. The rear part of the front connecting rod 3 and the front part of the rear connecting rod 4 both move upward and gradually move closer together, and at the same time drive the front bracket 1 It gradually moves closer to the rear bracket 2 along the front and rear directions, as shown in Figure 3 . Finally, the front bracket 1, the rear bracket 2, the front connecting rod 3 and the rear connecting rod 4 are close together, and the front connecting rod 3 and the rear connecting rod 4 are folded between the front bracket 1 and the rear bracket 2 until the rear connecting rod 4. When the folding hook 9 at the rear end is hooked to the hanging column 23 on the cross bar 22, the cart frame 100 is stabilized to the folded state, and the folding operation is completed. The folded cart is shown in FIGS. 4 and 5 .

When the cart frame 100 is unfolded for use, the operator can first unfold the push rod 5 relative to the front bracket 1 from the rear of the cart frame 100, and then use the feet to apply the external force of the folding hook 9 so that the folding hook 9 is aligned with the horizontal The rods 22 are disengaged, so that under the elastic force of the torsion spring 6, the front connecting rod 3 and the rear connecting rod 4 are relatively rotated and gradually unfolded, and the front bracket 1 and the rear bracket 2 are gradually deployed along the front and rear directions until the front After the connecting rod 3 and the rear connecting rod 4 are deployed to extend in the front-rear direction, the locking tongue 73 of the sliding sleeve 71 is inserted into the locking groove 74 on the fixing block 72 to lock the locking assembly 7, and the stroller frame 100 is stably unfolded, as shown in the figure 1. As shown in Figure 2.

The children's stroller also includes a child's seat 200 located on the stroller frame 100, the child's seat 200 is installed on the front bracket 1, and the child's seat 200 does not move when the stroller frame 100 is unfolded and folded. It can be unfolded and folded together with the stroller frame 100 .

To sum up, the children's stroller of the present invention has a simple structure, and is very convenient to unfold and fold. The folded structure is very flat and the volume is small, which brings great convenience to the daily use of users.

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 (11)

1. A child stroller comprising a stroller frame having an unfolded state and a folded state, a wheel assembly disposed at the bottom of the stroller frame, a locking mechanism for locking the stroller frame in the unfolded state mechanism, characterized in that: the trolley frame includes a front bracket, a rear bracket whose upper part is pivotally connected to the upper part of the front bracket, a front link and a front link arranged between the front bracket and the rear bracket a rear link, the front of the front link is pivotally connected to the front bracket, the rear of the rear link is pivotally connected to the rear bracket, the rear of the front link is connected to the The front part of the rear link is pivotally connected, and an elastic member is provided between the front link and the rear link so that the two can be relatively expanded and extend along the same straight line. When the cart frame When in the unfolded state, the front link and the rear link extend along the same straight line under the action of the elastic member, and the front bracket, the rear bracket, the front link and the rear link form a triangular structure ; When the cart frame is in the folded state, the front link and the rear link overcome the elastic force of the elastic member and turn over relative to each other and are folded between the front bracket and the rear bracket. 2. The children's stroller according to claim 1, wherein when the stroller frame is folded, the rear part of the front link and the front part of the rear link move upward and gradually mutually move closer. 3. The stroller according to claim 1, wherein the elastic member is a torsion spring arranged between the front link and the rear link, and the two ends of the torsion spring resist On the front link and the rear link. 4. The stroller according to claim 1, wherein the locking mechanism comprises a locking assembly arranged between the rear bracket and the rear link, and the locking assembly includes a locking assembly fixedly arranged on the The fixed block on the rear bracket, the sliding piece that is slidably arranged on the rear connecting rod along the length extension direction of the rear connecting rod, one of the two parts of the fixed block and the sliding piece There is a lock slot, and the other part is provided with a lock tongue that can be matedly inserted into the lock slot along the front and back direction. When the lock tongue is inserted into the lock slot, the locking piece is locked; when the lock The locking member is unlocked when the tongue is disengaged from the locking groove. 5. The children's stroller according to claim 4, wherein the sliding member is a sliding sleeve slidably arranged on the rear connecting rod, the locking tongue is arranged at the front of the sliding sleeve, The lock groove is opened on the fixed block, and the rear link is also provided with an unlocking member for driving the sliding sleeve to slide back and forth to control the working state of the locking assembly. 6. The children's stroller according to claim 1, characterized in that: the stroller frame is also provided with a folding hook for locking the stroller frame in a folded state, when the stroller When the frame is in the folded state, the folding hook is hooked between at least two rods of the front bracket, the rear bracket, the front connecting rod and the rear connecting rod along the front and rear directions. 7. The children's stroller according to claim 6, characterized in that: the rear support includes rear support rods located on the left and right sides respectively, and a cross bar connected between the rear support rods on both sides, the rear support rods The connecting rod is U-shaped with an opening facing forward, and one end of the folding hook is connected to the rear of the rear connecting rod. When the cart frame is in the folded state, the other end of the folding hook is fixedly Hooked on the crossbar. 8. The children's stroller according to claim 1, characterized in that: the rear part of the rear link has a folding operation part extending backward, and acts on the folding operation when the stroller frame is folded The part drives the rear connecting rod to turn over relative to the rear bracket so that it gradually moves closer to the front support rod and drives the front bracket and rear bracket to gradually move closer together along the front-rear direction. 9. The stroller according to claim 8, characterized in that: the front link is a front basket rod, and the rear link is a rear basket rod, when the stroller frame is in the expanded state When the cart frame is folded, the front basket rod and the rear basket rod extend along the front-rear direction to form a basket frame; when the cart frame is folded, the rear part of the rear basket rod is stepped down to realize the Describe the folding of the stroller frame. 10. The stroller according to any one of claims 1 to 9, characterized in that: the stroller frame further comprises a push rod, and the push rod is slidably connected to the On the front bracket, a push rod locking piece for locking the two is also provided between the push rod and the front bracket. 11. The children's stroller according to claim 10, characterized in that: the push rod comprises push rod rods respectively located on the left and right sides, push handles arranged at the upper ends of the push rod rods on both sides, The front bracket includes front struts respectively located on the left and right sides, and on each side of the cart frame, the push rod rods are respectively slidably inserted into the rod cavities of the front struts.