CN220363381U - stroller - Google Patents

Abstract

The utility model discloses a children handcart, which comprises a frame with an unfolding state and a folding state, and a wheel assembly arranged at the bottom of the frame, wherein the frame at least comprises a foldable bottom bracket assembly, a push rod assembly and a handrail assembly, the wheel assembly is arranged at the bottom of the bottom bracket assembly, the push rod assembly comprises an upper push rod frame and a lower push rod frame, the handrail assembly comprises a connecting frame and a handrail frame, the frame is folded in the folding state, the upper push rod frame, the connecting frame, the handrail frame, the lower push rod frame and the bottom bracket assembly are mutually folded, and the frame also comprises a linkage mechanism, wherein the linkage mechanism is linked in the process of relatively rotating and folding the upper push rod frame and the lower push rod frame so that the handrail frame and the connecting frame are mutually folded. The folding principle of the child stroller is simple, and the folding operation is easy.

Description

stroller

Technical field

The utility model relates to the field of children's products, in particular to a children's stroller.

Background technique

The armrest assembly of most strollers often cannot be folded together with the frame. Usually, the armrest assembly needs to be detached from the frame before folding the frame. After the frame is folded, the armrest assembly can be folded together with the folding frame. The rear frames are placed together, which makes the folding operation of the stroller cumbersome and causes great inconvenience to the user.

Contents of the invention

The purpose of this utility model is to provide a new children's stroller.

In order to achieve the above object, the technical solution adopted by the present utility model is: a children's stroller, including a frame with an unfolded state and a folded state, and a wheel assembly provided at the bottom of the frame. The frame at least includes a retractable The foldable bottom bracket assembly, the push rod assembly and the armrest assembly, the wheel assembly is located at the bottom of the bottom bracket assembly, the push rod assembly includes an upward push rod that extends in the up and down direction when the frame is in an unfolded state. Rod frame and push-down rod frame, the lower part of the push-rod frame is rotatably connected to the bottom bracket assembly, the upper part of the push-rod frame is rotatably connected to the lower part of the push-rod frame;

The armrest assembly includes a connecting frame and an armrest frame each extending in the front-rear direction when the vehicle frame is in an unfolded state. The front part of the connecting frame is rotationally connected to the bottom bracket assembly, and the rear part of the connecting frame is rotatably connected to the bottom bracket assembly. The front part of the armrest frame is rotatably connected to the lower push rod frame, the front part of the armrest frame is rotatably connected to the connecting frame, the rear part of the armrest frame is rotatably connected to a sliding member, and the sliding member can move along the The length extension direction of the downward push rod frame is slidably provided on the downward push rod frame;

When the vehicle frame is in a folded state, the bottom bracket assembly is folded, and the upper push rod frame, the connecting frame, the armrest frame, the lower push rod frame and the bottom bracket assembly are retracted to each other. The vehicle frame further includes a linkage mechanism configured to link the armrest frame and the connecting frame to retract each other during the relative rotation and folding process of the upper push rod frame and the lower push rod frame.

Preferably, the linkage mechanism includes a linkage frame, one end of the linkage frame is rotatably connected to the upper push rod frame around the first rotation center line, and the other end of the linkage frame is rotatably connected to the upper push rod frame. On the sliding member, the lower part of the upper push rod frame and the upper part of the lower push rod frame are rotationally connected around the second rotation center line. Along the length extension direction of the upper push rod frame, the first rotation center The line is located below the second center line of rotation.

Preferably, the rear part of the connecting frame is rotatably connected to the lower push rod frame around the third rotation center line, and the sliding member is located below the third rotation center line on the lower push rod frame. .

Further, during the process of converting the vehicle frame from the unfolded state to the folded state, the sliding member slides upward along the lower push rod frame, and the front part of the armrest frame rotates downward toward the connecting frame.

Further, when the vehicle frame is in an unfolded state, the connecting frame extends obliquely upward from front to back, and the armrest frame extends obliquely downward from front to back.

Preferably, the connecting frame has two connecting rods respectively located on the left and right sides and extending in the front and rear direction. The two connecting rods are located on the outermost side of the frame in the left and right direction.

Preferably, the bottom bracket assembly at least includes a front support frame and a rear support frame. When the vehicle frame is in an unfolded state, the front support frame and the rear support frame each extend in the front direction, and the front support frame of the connecting frame The front part of the front support frame is rotatably connected to the front part of the front support frame, the rear part of the front support frame is rotatably connected to the front part of the rear support frame, and the rear part of the rear support frame is connected to the lower push rod frame. The lower part is rotationally connected.

Further, the bottom bracket assembly also includes a front bracket and a rear bracket. When the vehicle frame is in an unfolded state, the front bracket tilts and extends backward from bottom to top, and the rear bracket tilts and extends forward from bottom to top. , wherein the rear bracket includes an upper bracket and a lower bracket slidingly connected in the up and down direction, the front support bracket is fixed on the upper part of the front bracket, the front part of the front support bracket or the upper part of the front bracket It is rotatably connected to the upper part of the upper bracket, and the lower part of the lower push rod frame or the rear part of the rear support frame is rotatably connected to the lower bracket.

Further, the front support frame, the upper part of the upper support frame and the lower part of the connecting frame are jointly connected to rotate around a rotation center line, and the lower part of the lower push rod frame, the rear part of the rear support frame and The lower brackets are jointly connected to rotate around another rotation center line.

Further preferably, the upper bracket at least includes a cross bar extending in the left and right direction, and the front support frame, the connecting frame and the upper portion of the upper bracket are rotatably connected together around the axis of the cross bar, When the vehicle frame is in an unfolded state, the cross bar, the front support frame and the rear support frame together form a seat for children to sit and stand.

Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art: the children's stroller of the present utility model is provided with a linkage mechanism. When the upper push rod frame rotates and folds relative to the lower push rod frame, the linkage mechanism The mechanism can be linked to make the armrest assembly retract relative to the push rod assembly, which simplifies the folding operation. The user only needs to flip forward and press down on the push rod frame to fold the entire frame, making the folding operation simple.

Description of the drawings

Figure 1 is a schematic three-dimensional structural diagram of a children's stroller according to a specific embodiment of the present invention;

Figure 2 is a schematic diagram of the explosion in Figure 1;

Figure 3 is a longitudinal section schematic diagram of Figure 1;

Figure 4 is a schematic front view of Figure 1;

Figure 5 is a schematic top view of Figure 1;

Figure 6 is a schematic three-dimensional structural diagram of the stroller in Figure 1 during the folding process;

Figure 7 is a longitudinal section schematic diagram of Figure 6;

Figure 8 is a schematic three-dimensional structural diagram of the stroller of Figure 1 in a folded state;

Figure 9 is a schematic side view of Figure 8;

Figure 10 is a schematic front view of Figure 8;

Among them: 100, frame; 200, wheel assembly; 201, front wheel assembly; 202, rear wheel assembly;

1. Bottom bracket assembly; 11. Front support frame; 111. Front support rod; 12. Rear support frame; 121. Connecting seat; 121a, first connection part; 121b, second connection part; 122, rear support rod; 13 , front bracket; 131, front strut; 14, rear bracket; 141, upper bracket; 141a, cross bar; 141b, upper strut; 142, lower bracket; 142a, lower strut; 142b, connecting rod; 2. push Rod assembly; 21. Upper push rod frame; 211. Upper push rod; 211a, lower connector; 212. Push handle bar; 22. Lower push rod bracket; 221. Lower push rod; 3. Handrail assembly; 31. Connecting frame ; 311. Connecting rod; 32. Armrest frame; 321. Armrest rod; 322. Slider; 4. Linkage mechanism; 41. Linkage frame; 411. Linkage rod;

X1, the first rotation center line; X2, the second rotation center line; X3, the third rotation center line; X4, the fourth rotation center line; X5, the fifth rotation center line; X6, the sixth rotation center line.

Detailed ways

The following descriptions of the directions involved in up, down, left, right, front, back, inside, and outside are defined based on the directions observed by the pusher pushing the stroller when it is in the unfolded state. , the purpose is only to clearly explain the relative positional relationship between the various rods and components on the stroller.

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

Referring to Figure 1, a children's stroller is shown, which includes a frame 100 with an unfolded state and a folded state, and a wheel assembly 200 located at the bottom of the frame 100. The frame 100 includes a foldable bottom bracket assembly 1, The push rod assembly 2 and the armrest assembly 3, and the wheel assembly 200 are located at the bottom of the bottom bracket assembly 1. The push rod assembly 2 includes an upper push rod frame 21 and a lower push rod frame each extending in the up and down direction when the frame 100 is in an unfolded state. 22. The lower part of the lower push rod frame 22 is rotatably connected to the bottom bracket assembly 1, and the upper part of the lower push rod frame 22 is rotatably connected to the lower part of the upper push rod frame 21.

The armrest assembly 3 includes a connecting frame 31 and an armrest frame 32 each extending in the front-rear direction when the vehicle frame 100 is in an unfolded state. The front part of the connecting frame 31 is rotatably connected to the bottom bracket assembly 1, and the rear part of the connecting frame 31 is rotatably connected to the bottom bracket assembly 1. Connected to the lower push rod frame 22, the front part of the armrest frame 32 is rotatably connected to the connecting frame 31, and the rear part of the armrest frame 32 is rotationally connected to a sliding member 322. The sliding member 322 can move along the length of the lower push rod frame 22. The extension direction is slidably provided on the lower push rod frame 22 .

When the frame 100 is in a folded state, the bottom bracket assembly 1 is folded, the upper push rod frame 21, the connecting frame 31, the armrest frame 32 and the lower push rod frame 22 are retracted with the bottom bracket assembly 1. The frame 100 also includes a linkage mechanism 4 , during the process of relative rotation and folding of the upper push rod frame 21 and the lower push rod frame 22, the linkage mechanism 4 can be linked to cause the armrest frame 32 and the connecting frame 31 to retract each other.

In this embodiment, the linkage mechanism 4 includes a linkage frame 41. One end of the linkage frame 41 is rotatably connected to the upper push rod frame 21 around the first rotation center line X1, and the other end of the linkage frame 41 is rotatably connected to the sliding member. 322, the lower part of the upper push rod frame 21 and the upper part of the lower push rod frame 22 are rotationally connected around the second rotation center line X2. Along the length extension direction of the upper push rod frame 21, the first rotation center line X1 is located at the second Turn below the center line X2.

Referring to FIGS. 1 to 3 , the upper push rod frame 21 includes two upper push rods 211 that are arranged on the left and right sides and extend in the up and down direction, and extend in the left and right direction and are connected between the upper ends of the two upper push rods 211 . Push handle bar 212, in this embodiment, the upper push bar frame 21 is provided integrally, and in the unfolded state, it is a U-shaped bar with an opening facing downward.

In this embodiment, the lower push rod frame 22 includes two lower push rods 221 which are respectively arranged on the left and right sides and extend along the up and down direction. The linkage frame 41 includes two linkage rods 411 which are respectively arranged on the left and right sides and extend along the up and down direction. The lower end of the upper push rod 211 is also provided with a lower connecting head 211a extending downward along the length direction of the upper push rod 211. In the unfolded state, located on the left and right sides of the frame 100, the upper part of the lower push rod 221 and the lower part of the upper push rod 211 are rotationally connected around the second rotation center line X2, and the upper end of the linkage rod 411 and the lower connecting head 211a are connected around the second rotation center line A rotational center line X1 is connected rotationally. The first rotation center line X1 and the second rotation center line X2 are parallel to each other and extend horizontally along the left and right directions.

As shown in FIG. 1 , the rear portion of the connecting frame 31 is connected to the lower push rod frame 22 to rotate around the third rotation center line X3 , and the sliding member 322 is located below the third rotation center line X3 on the lower push rod frame 22 . Specifically, the armrest frame 32 includes two armrest poles 321 that are arranged on the left and right sides and extend along the front and rear directions. In this embodiment, the front ends of the two armrest poles 321 are bent toward each other along the left and right directions and connected together. Each armrest is A sliding member 322 is rotatably connected to the rear end of the rod 321. The sliding member 322 is specifically a sliding sleeve. The two sliding sleeves are slidably sleeved on the two lower push rods 221 respectively. The connecting frame 31 has two connecting rods 311 respectively located on the left and right sides and extending in the front and rear direction. The two connecting rods 311 are located on the outermost side of the frame 100 in the left and right direction. Located on the left and right sides of the frame 100, the rear end of the connecting rod 311 is connected to the middle part of the lower push rod 221 to rotate around the third rotation center line X3, and the middle part of the connecting rod 311 and the armrest bar 321 rotate around the fourth rotation center line X4. The rear end of the armrest rod 321, the sliding member 322, and the lower end of the linkage rod 411 are jointly connected to rotate around the fifth rotation center line X5. The third rotation center line X3, the fourth rotation center line X4, and the fifth rotation center line X5 are parallel to each other and extend horizontally along the left and right directions. Along the length extension direction of the lower push rod 221, the third rotation center line X3 is located at the fourth Above the rotation center line X4, the third rotation center line X3 and the fourth rotation center line X4 are both located below the first rotation center line X1.

The bottom bracket assembly 1 includes a front support frame 11 and a rear support frame 12. When the vehicle frame 100 is in an unfolded state, the front support frame 11 and the rear support frame 12 each extend in the front direction. The front part of the connecting frame 31 and the front support frame 11 The front part is rotatably connected, the rear part of the front support frame 11 is rotatably connected with the front part of the rear support frame 12 , and the rear part of the rear support frame 12 is rotatably connected with the lower part of the lower push rod frame 22 .

The bottom bracket assembly 1 also includes a front bracket 13 and a rear bracket 14. When the vehicle frame 100 is in the unfolded state, the front bracket 13 tilts and extends backward from bottom to top, and the rear bracket 14 tilts and extends forward from bottom to top, wherein the rear bracket 14 includes an upper bracket 141 and a lower bracket 142 that are slidably connected in the up and down direction. The front support bracket 111 is fixed on the upper part of the front bracket 13. The front part of the front support bracket 11 or the upper part of the front bracket 13 rotates with the upper part of the upper bracket 141. connection, the lower part of the lower push rod frame 22 or the rear part of the rear support frame 12 is rotatably connected to the lower bracket 142 . In this embodiment, the front support frame 11, the upper part of the upper bracket 141 and the lower part of the connecting frame 31 are jointly connected to rotate around a rotation center line. The lower part of the lower push rod frame 22, the rear part of the rear support frame 12 and the lower bracket 142 They are jointly connected to rotate around another rotation center line.

Referring to Figures 1 to 5, the front support frame 11 includes two front support rods 111 located on the left and right sides and extending in the front and rear direction. The front bracket 13 includes two front support rods 111 located on the left and right sides and extending in the up and down direction. Support rods 131, two front support rods 11 are respectively fixed on the upper parts of the two front support rods 311; the rear support frame 12 includes two connection seats 121 respectively located on the left and right sides, each connection seat 121 includes two connection seats along the front and rear directions. The extended first connecting part 121a and the second connecting part 121b bent downwardly from the rear end of the first connecting part 121a are located on the left and right sides of the frame 100, and the rear part of the front support rod 111 rotates around the sixth The center line Two, two upper support rods 141b are arranged in parallel, and the upper ends of the two upper support rods 141b are fixedly connected to the left and right parts of the cross bar 141a respectively; the lower bracket 142 includes two components, which are respectively provided on the left and right sides and extend in the up and down direction. There are two lower struts 142a. The lower strut 142a is provided with a lumen extending along its length direction. The two upper struts 141b are respectively inserted into the lumens of the two lower struts 142a in a sliding fit. The rear bracket 14 also has a connecting rod 142b extending in the left and right direction. The upper parts of the two lower support rods 142a are respectively fixedly connected to the left and right sides of the connecting rod 142b, and the left and right ends of the connecting rod 142b are both facing in the left and right direction. The lower bracket 142 extends outward and protrudes.

Located on the left and right sides of the frame 100, the cross bar 141a is connected between the two front support rods 111 to rotate around its own axis. The front ends of the front support rod 111 and the connecting rod 311 rotate around the axis of the cross bar 141a. ground, so that the front support frame 111, the connecting frame 31 and the upper part of the upper bracket 141 are jointly connected to rotate around the axis of the cross bar 141a. The connecting rod 142b is connected between the lower ends of the second connecting parts 121b on both sides so as to rotate around its own axis. The lower end of the lower push rod 221 and the lower end of the second connecting part 121b are connected around the axis of the connecting rod 142b. Rotationally connected together, so that the rear support frame 12, the lower part of the lower push rod frame 22, and the lower bracket 142 are rotationally connected together around the axis of the connecting rod 142b.

The rear support frame 12 is also provided with a rear support rod 122. In the unfolded state, the rear support rod 122 is U-shaped and opens forward. The left and right ends of the rear support rod 122 are respectively connected to the first connection portion on the same side. 121a rear fixed connection.

The wheel assembly 200 includes a front wheel assembly 201 and a rear wheel assembly 202. The front wheel assembly 201 and the rear wheel assembly each include two groups located on the left and right sides. The two groups of front wheel assemblies 201 are respectively provided at the bottom of the two front struts 131. , two sets of rear wheel assemblies 202 are respectively provided at the bottoms of the two lower struts 142a.

When the vehicle frame 100 is in an unfolded state, as shown in Figures 3 to 5, the upper push rod frame 21 and the lower push rod frame 22 extend along the same length direction, the upper bracket 141 and the lower bracket 142 are relatively unfolded along the length direction, and the connecting frame 31 The armrest frame 32 extends upward from front to back, and the armrest frame 32 extends downward from front to back. Viewed from the side of the frame 100, the front bracket 13 and the connecting frame 31 curve and extend upward along a smooth arc from front to back, which looks simple and beautiful. The support rod 111 and the first connecting portion 121a extend along the same length direction. The cross rod 141a, the front support frame 11 and the rear support frame 12 together form a seat for children to sit and stand. A seat board or flexible cloth cover can be provided above the seat, and a backrest can be provided on the push-down frame 22. The child can sit on the seat board or the cloth cover and lean back on the backrest. The armrest frame 32 is located in front of the child and It can be grasped by the child's hands to maintain body balance, and the handrail frame 32 can prevent the child from falling forward. In this state, the caregiver can drive the stroller forward by pushing the push handle 212 forward.

During the process of converting the frame 100 from the unfolded state to the folded state, as shown in Figures 6 and 7, the upper push rod frame 21 is flipped forward around the second rotation center line The rod frame 21 and the lower push rod frame 22 are folded toward each other and folded together behind the rear bracket 14; during this process, the upper push rod frame 21 drives the linkage frame 41 to move upward along the length direction of the lower push rod frame 22, and the linkage frame The lower part of 41 drives the sliding member 322 to slide upward along the lower push rod 211. The sliding member 322 drives the front part of the armrest frame 32 to rotate downward toward the connecting frame 31; the lower push rod frame 22 drives the connecting frame 31 during its downward movement. Flip backward together with the armrest frame 32, and the lower part of the push rod frame 22 drives the lower bracket 142 to slide relative to the upper bracket 141 along the length direction to shorten the distance. When the lower bracket 142 slides relative to the upper bracket 141, the rear support frame 12 is driven around the connecting rod. The axis line 142b rotates backward, and the rear support frame 12 drives the front support frame 13 to close relative to the rear support frame 14 through the front support frame 11 .

When the vehicle frame 100 is in a folded state, as shown in Figures 8 to 10, the front bracket 13, the rear bracket 14, the lower push rod frame 22, the armrest frame 32, and the upper push rod frame 21 are folded together in sequence from front to back. In the left and right direction, the connecting frame 31 is folded outside the lower push rod frame 22, and the rear wheel assembly 202 is folded in the middle of the front wheel assembly 201 and supported on the ground together with the lower connecting head 211a of the upper push rod 211.

In summary, the folding principle of the children's stroller in this embodiment is simple. It only needs to be flipped forward and the push rod frame 21 is pressed down to realize the folding of the entire stroller, which provides greater convenience to the user and improves the user's convenience. experience.

The above embodiments are only for illustrating the technical concepts and characteristics of the present invention. Their purpose is to enable those familiar with the technology to understand the contents of the present invention and implement them accordingly. They cannot limit the scope of protection of the present invention. All equivalent changes or modifications based on the spirit and essence of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. A children's stroller, including a frame with an unfolded state and a folded state, and a wheel assembly located at the bottom of the frame, characterized in that: the frame at least includes a foldable bottom bracket assembly and a push rod. assembly and armrest assembly, the wheel assembly is located at the bottom of the bottom bracket assembly, the push rod assembly includes an upper push rod frame and a lower push rod frame each extending in the up and down direction when the frame is in an unfolded state, The lower part of the lower push rod frame is rotationally connected to the bottom bracket assembly, and the upper part of the lower push rod frame is rotationally connected to the lower part of the upper push rod frame; The armrest assembly includes a connecting frame and an armrest frame each extending in the front-rear direction when the vehicle frame is in an unfolded state. The front part of the connecting frame is rotationally connected to the bottom bracket assembly, and the rear part of the connecting frame is rotatably connected to the bottom bracket assembly. The front part of the armrest frame is rotatably connected to the lower push rod frame, the front part of the armrest frame is rotatably connected to the connecting frame, the rear part of the armrest frame is rotatably connected to a sliding member, and the sliding member can move along the The length extension direction of the downward push rod frame is slidably provided on the downward push rod frame; When the vehicle frame is in a folded state, the bottom bracket assembly is folded, and the upper push rod frame, the connecting frame, the armrest frame, the lower push rod frame and the bottom bracket assembly are retracted to each other. The vehicle frame further includes a linkage mechanism configured to link the armrest frame and the connecting frame to retract each other during the relative rotation and folding process of the upper push rod frame and the lower push rod frame. 2. The children's stroller according to claim 1, characterized in that: the linkage mechanism includes a linkage frame, one end of the linkage frame is connected to the upper push rod frame to rotate around the first rotation center line, The other end of the linkage frame is rotatably connected to the sliding member, and the lower part of the upper push rod frame and the upper part of the lower push rod frame are rotationally connected around the second rotation center line. In the length extension direction of the rod frame, the first rotation center line is located below the second rotation center line. 3. The children's stroller according to claim 1, wherein the rear part of the connecting frame is rotatably connected to the lower push rod frame around the third rotation center line, and the sliding member is on the lower push rod frame. The push rod frame is located below the third rotation center line. 4. The children's stroller according to claim 1, characterized in that: during the process of converting the frame from the unfolded state to the folded state, the sliding member slides upward along the lower push rod frame, and the armrest frame The front part rotates downward toward the connecting frame. 5. The children's stroller according to claim 4, characterized in that: when the frame is in an unfolded state, the connecting frame extends obliquely upward from front to back, and the armrest frame extends obliquely downward from front to back. 6. The children's stroller according to claim 1, characterized in that: the connecting frame has two connecting rods located on the left and right sides and extending in the front and rear directions, and the two connecting rods are on the frame. The upper edge is located at the outermost side in the left-right direction. 7. The children's stroller according to any one of claims 1 to 6, wherein the bottom bracket assembly at least includes a front support frame and a rear support frame. When the frame is in an unfolded state, the front support frame The frame and the rear support frame each extend in the front direction, the front part of the connecting frame is rotationally connected to the front part of the front support frame, and the rear part of the front support frame is connected to the front part of the rear support frame. The rear portion of the rear support frame is rotatably connected to the lower portion of the lower push rod frame. 8. The children's stroller according to claim 7, wherein the bottom bracket assembly further includes a front bracket and a rear bracket, and when the frame is in an unfolded state, the front bracket tilts backward from bottom to top. Extend, the rear bracket extends tilted forward from bottom to top, wherein the rear bracket includes an upper bracket and a lower bracket that are slidably connected in the up and down direction, and the front support bracket is fixed on the upper part of the front bracket, so The front part of the front support frame or the upper part of the front support is rotationally connected to the upper part of the upper bracket, and the lower part of the lower push rod frame or the rear part of the rear support frame is rotationally connected to the lower bracket. superior. 9. The children's stroller according to claim 8, characterized in that: the front support frame, the upper part of the upper bracket and the lower part of the connecting frame are jointly connected to rotate around a rotation center line, and the downward pusher The lower part of the rod frame, the rear part of the rear support frame and the lower bracket are jointly connected to rotate around another rotation center line. 10. The children's stroller according to claim 9, characterized in that: the upper bracket at least includes a cross bar extending in the left and right directions, and the upper part of the front support frame, the connecting frame and the upper bracket is around The axis lines of the cross bars are rotationally connected together. When the frame is in an unfolded state, the cross bars, the front support frame and the rear support frame together form a seat for children to sit and stand.