CN104326006B - child umbrella handle vehicle - Google Patents

Abstract

The invention discloses a children's umbrella handle car, wherein the cart frame includes a front support, a push rod, a rear support, an upper support rod and a lower support rod. Connected to the front of the front bracket, the upper part of the upper brace is pivotally connected to the push rod, the lower part of the upper brace and the upper part of the rear bracket are respectively pivotally connected to the sliding assembly, the upper part of the lower brace is connected to the rear of the front bracket The upper part is pivotally connected, and the lower part of the lower brace is pivotally connected to the rear bracket. When the cart frame is unfolded, the front bracket, the push rod and the upper strut bracket form a triangular structure, and another triangular structure is formed between the front bracket, the rear bracket and the lower strut. When the cart frame is folded, the sliding assembly moves along the Sliding in the length direction of the front support drives the push rod, the upper support rod, the rear support and the lower support rod to move closer to the front support respectively. The children's umbrella handle car has a small number of rods, a simple and beautiful structure, convenient folding and unfolding operations, and a compact structure after folding.

Description

children's umbrella car

technical field

The invention relates to a children's umbrella handle car.

Background technique

The children's umbrella handle car in the prior art usually has a foldable cart frame, a wheel assembly located at the bottom of the cart frame, and a locking mechanism for locking the cart frame in an unfolded position. There are various structures of the frame, and correspondingly, the number of rods and the connection methods between the rods are also different, resulting in different folding and unfolding principles of each umbrella handle. How to reduce the number of rods on the umbrella handle, simplify the use and unfolding operation of the umbrella handle, and reduce the folded volume under the premise of ensuring the normal use performance of the umbrella handle is a constant challenge for those skilled in the art. The goal to pursue.

Contents of the invention

The object of the present invention is to provide a children's umbrella handle car with few rods, simple structure and easy operation.

In order to achieve the above object, the technical solution adopted by the present invention is: a children's umbrella handle car, including a foldable cart frame, a front wheel assembly arranged at the bottom front of the cart frame, and a front wheel assembly arranged at the bottom of the cart frame. The rear wheel assembly at the bottom rear of the cart frame and the locking mechanism for locking the cart frame in the unfolded state, the cart frame includes:

front bracket;

a push rod, the lower portion of which is pivotally connected to the front portion of the front bracket;

a sliding assembly, the sliding assembly is slidably arranged on the front support along the length extension direction of the front support;

an upper strut, the upper pivot of the upper strut is connected to the push rod, and the lower pivot of the upper strut is connected to the sliding assembly;

a rear bracket, the upper pivot of the rear bracket is connected to the sliding assembly;

a lower brace, the upper part of the lower brace is pivotally connected to the rear part of the front bracket, the lower part of the lower brace is pivotally connected to the rear bracket,

When the cart frame is unfolded, a triangular structure is formed between the front support, the push rod and the upper support bar, and another triangle structure is formed between the front support, the rear support and the lower support bar. Triangular structure, when the cart frame is folded, the sliding assembly slides along the length direction of the front support to drive the push rod, the upper support rod, the rear support and the lower support rod respectively to the The front brackets move closer to each other.

Preferably, the front bracket includes a front strut extending obliquely from bottom to top along the front-rear direction, and the front wheel assembly is arranged at the lower part of the front strut.

Further, the front bracket also includes a vertical rod fixedly connected with the front support rod and extending in the vertical direction, and a transfer portion extending from the top of the vertical rod to both sides, the transfer portion and the An adapter shaft is provided between the push rods, and the adapter shaft is inclined outward relative to the cart frame.

Further, the push rod includes a left push rod and a right push rod respectively located on the left and right sides, the upper stay includes a left upper stay whose upper end is pivotally connected to the left push rod, and whose upper end is pivotally connected to the left push rod. The right upper strut on the right push rod, the lower parts of the left upper strut and the right upper strut are respectively pivotally connected to the sliding assembly.

Furthermore, when the cart frame is unfolded, a U-shape is formed between the left upper strut, the right upper strut and the sliding assembly.

Furthermore, the left upper strut is pivotally connected to the sliding assembly through a first shaft, the lower part of the right upper strut is pivotally connected to the sliding assembly through a second shaft, and the first shaft, The axis line of the second shaft is arranged obliquely.

Further, the rear support includes a left rear support rod and a right rear support rod respectively located on the left and right sides and pivotally connected to the sliding assembly, and the lower support rod includes an upper part and a front support rod respectively. The left lower strut and the right lower strut are pivotally connected at the upper part, the lower part of the left lower strut is pivotally connected to the left rear strut, and the lower part of the right lower strut is pivotally connected to the right rear On the strut, when the cart frame is unfolded, a triangular structure is formed between the front strut, the right rear strut, and the right lower strut, and the front strut, the left rear strut , A triangular structure is also formed between the left lower struts.

Further, the left rear support rod is pivotally connected to the sliding assembly through a third shaft, the right rear support rod is pivotally connected to the sliding assembly through a fourth shaft, and the third shaft is connected to the sliding assembly The axis line of the fourth axis is arranged obliquely.

As a specific implementation, the sliding assembly is a sliding sleeve assembly slidably sleeved on the front bracket, the lower part of the upper strut and the upper part of the rear bracket are respectively pivotally connected to the sliding Set the upper and lower sides of the assembly.

Preferably, the push rod can be folded along its own length, and the push rod includes a lower push rod, an upper push rod whose lower part is pivotally connected to the upper part of the lower push rod, and the upper support rod The upper pivot is connected to the lower push rod.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art: the children's umbrella handle car of the present invention has a small number of rods on the cart frame, and the structure is simple and beautiful. It is only necessary to drive the sliding assembly to slide down along the front bracket, so that the push rod, upper support rod, rear bracket and lower support rod are respectively moved closer to the front bracket. The operation is very convenient. The folded cart frame is very compact and occupies less Small space, easy to store and carry.

Description of drawings

Accompanying drawing 1 is the perspective view when children's umbrella handle car of the present invention is expanded;

Accompanying drawing 2 is the structure exploded schematic diagram of children's umbrella handle car of the present invention;

Accompanying drawing 3 is the perspective view after the push rod on the children's umbrella handle car of the present invention is folded;

Accompanying drawing 4 is the perspective view when children's umbrella handle car of the present invention is in half-folded state;

Accompanying drawing 5 is the three-dimensional view that children's umbrella handle car of the present invention is in the folded state;

in:

1. Front bracket; 11. Front pole; 12. Vertical bar; 13. Adapter; 14. Adapter shaft;

2. Push rod; 21. Left push rod; 211. Left lower push rod; 212. Left upper push rod; 22. Right push rod; 221. Right lower push rod; 222. Right upper push rod;

3. Rear bracket; 31. Left rear support rod; 32. Right rear support rod;

4. Upper strut; 41. Left upper strut; 42. Right upper strut;

5. Lower strut; 51. Left lower strut; 52. Right lower strut;

6. Sliding assembly (sliding sleeve assembly); 6a, first connecting part; 6b, second connecting part; 6c, third connecting part; 6d, fourth connecting part;

7. First shaft; 8. Second shaft; 9. Third shaft; 10. Connector; 20. Front wheel assembly; 30. Rear wheel assembly.

Detailed ways

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

The following definitions of directions are based on the directions observed by children sitting and standing on the umbrella handle when the children’s umbrella handle is in use, and the front and rear directions refer to the left and right directions in the drawings , where the left is the front, the right is the back, and the left and right directions refer to the left and right directions observed when the child sits and stands on the stroller and faces forward.

Referring to the children's umbrella car shown in Figures 1 to 5, it includes a foldable stroller frame, a front wheel assembly 20 located at the bottom front of the stroller frame, and a rear wheel assembly located at the bottom rear of the stroller frame 30. A locking mechanism (not shown) for locking the stroller frame in the unfolded state.

Referring to shown in each accompanying drawing, this cart frame comprises the following structures:

The front support 1, the front support 1 includes a front support rod 11, the front support rod 11 extends obliquely from bottom to top along the front and rear direction, and the front support 1 also includes a Vertical bar 12, and two transfer parts 13 respectively extending to both sides from the top of vertical bar 12, and front wheel assembly 20 is arranged at the lower part of vertical bar 12;

Push rod 2, this push rod 2 comprises left push rod 21 and right push rod 22 respectively positioned at left and right sides, and left push rod 21 comprises left lower push rod 211, the upper left push rod that the lower part is pivotally connected with the top of left lower push rod 211 Rod 212, right push rod 22 comprises right lower push rod 221, the upper right push rod 222 that the bottom is pivotally connected with the top of right lower push rod 221, the pivot joint between left lower push rod 211 and left upper push rod 212 and The pivot joints between the lower right push rod 221 and the upper right push rod 222 are respectively locked by locking pieces (not shown in the figure), so that when the locking pieces are locked, the left push rod 21 and the right push rod 22 are unfolded respectively, When the lock is unlocked, the left push rod 21 and the right push rod 22 can be folded respectively along their own length direction, and the bottoms of the left lower push rod 211 and the right lower push rod 221 are pivotally connected to the two sides through the adapter shaft 14 respectively. On the adapter part 13, the axis lines of the adapter shafts 14 on both sides are inclined to each other and are inclined outward relative to the cart frame;

The sliding assembly 6, the sliding assembly 6 can be a combination of a plurality of sliding pieces slidably arranged on the front strut 11, or can be an integral part. The sliding assembly 6 here is a sliding sleeve assembly, and the sliding sleeve assembly 6 is slidably sleeved on the front strut 11 along the length extension direction of the front strut 11;

The rear bracket 3 includes a left rear strut 31 and a right rear strut 32 respectively located on the left and right sides, and the upper part of the left rear strut 31 and the upper part of the right rear strut 32 are pivotally connected to the sliding sleeve assembly 6 respectively. The upper part of the rear strut 31 and the lower part of the right rear strut 32 are respectively equipped with a rear wheel assembly 30;

The upper strut 4 includes a left upper strut 41 and a right upper strut 42. The upper part of the left upper strut 41 is pivotally connected to the left lower push rod 211, and the lower part of the left upper strut 41 is pivotally connected to the sliding sleeve assembly 6. The right upper strut The upper part of the rod 42 is pivotally connected to the lower right push rod 221, the lower part of the upper right strut 42 is pivotally connected to the sliding sleeve assembly 6, the lower left push rod 211, the upper left strut 41, the front strut 11 and the sliding sleeve assembly 6, between the right lower push rod 221, the right upper strut 42, the front strut 11 and the sliding sleeve assembly 6 respectively constitute a slider crank mechanism;

The lower strut 5 includes a left lower strut 51 and a right lower strut 52. The rear portion of the front strut 11 is fixedly provided with a connecting piece 10, and the upper parts of the left lower strut 51 and the right lower strut 52 are respectively pivotally connected to the connecting piece. 10, the lower pivot of the left lower strut 51 is connected to the left rear strut 31, the lower pivot of the right lower strut 52 is connected to the right rear strut 32, the front strut 11, the left rear strut 31, the lower left strut Between the strut 51 and the sliding sleeve assembly 6 , between the front strut 11 , the right rear strut 32 , the right lower strut 52 and the sliding sleeve assembly 6 respectively form a slider crank mechanism.

In the above cart frame, the sliding sleeve assembly 6 has four connecting parts, which are the first connecting part 6a and the second connecting part 6b on the upper side, the third connecting part 6c and the fourth connecting part on the lower side, respectively. 6d, these four connecting parts are distributed on the circumference of the sliding sleeve assembly 6 at intervals, for correspondingly connecting the left upper strut 41, the right upper strut 42, the left rear strut 31 and the right rear strut 32 respectively.

The bottom of the left upper strut 41 is connected on the first connecting portion 6a by the first shaft 7, and the bottom of the right upper strut 42 is connected on the second connecting portion 6b by the second shaft 8. When the cart frame is launched, the left upper strut A U-shape is formed between the rod 41 , the upper right strut 42 and the sliding sleeve assembly 6 . The axes of the first shaft 7 and the second shaft 8 are inclined to each other, and the two should not be collinear or parallel to ensure that when the cart frame is folded, the upper struts on both sides can be rotatably folded toward the middle.

The upper part of the left rear strut 31 is connected on the third connecting part 6c through the third shaft 9, the upper part of the right rear strut 32 is connected on the fourth connecting part 6d through the fourth shaft (not shown in the figure), and the third The axis lines of the shaft 9 and the fourth shaft are inclined to each other, and the two should not be collinear or parallel so as to ensure that when the cart frame is folded, the rear struts on both sides can rotate and move closer to the middle.

In this embodiment, the locking mechanism is provided between the sliding sleeve assembly 6 and the front strut 11 to lock the two.

When the cart frame is unfolded, as shown in Figure 1, the left push rod 21 and the right push rod 22 in the push rod 2 are in the unfolded state, the locking mechanism is locked, the sliding sleeve assembly 6 is fixed relative to the front bracket 1, and the left lower push rod 211 1. A triangular structure is formed between the left upper strut 41 and the front strut 11, and a triangular structure is also formed between the right lower push rod 221, the right upper strut 42 and the front strut 11; the front strut 11, the left rear strut 31, the lower left strut A triangular structure is formed between the struts 51, a triangular structure is also formed between the front strut 11, the right rear strut 32, and the right lower strut 52, and the cart frame is in a stable unfolded state.

When the stroller frame needs to be folded up, as shown in Figure 3, first the push rod 2 is folded, that is, the upper left push rod 212 and the upper right push rod 222 are turned down respectively, so that the left push rod 21 and the right push rod 22 are folded separately. Then the locking mechanism is unlocked so that the sliding sleeve assembly 6 can slide on the front strut 6, and then the top of the push rod is pressed down so that the push rod 2 acts on the upper struts 4 on both sides, as shown in Figure 4, the upper The support rod 4 rotates relative to the push rod 2, and the lower part of the upper support rod 4 drives the sliding sleeve assembly 6 to slide down along the front support rod 11; the sliding sleeve assembly 6 slides down along the front support rod 11 and drives the rear support rods on both sides ( The upper parts of the left rear strut 31 and the right rear strut 32) respectively move forward and downward along the front strut 11, which simultaneously drives the lower struts 5 on both sides to rotate relative to the front strut 11 and the rear struts on both sides. Gradually move closer to forward strut 11, finally, left push rod 21, right push rod 22, left upper strut 41, right upper strut 42, left lower strut 51, right lower strut 52, left rear strut 31 and right rear support The rods 32 and the front poles 11 are respectively close to each other to form a structure as shown in FIG. 5 . The folded stroller frame has a compact structure, takes up less space, and is easy to store and carry.

When the cart frame needs to be unfolded for use, the push rod 2 can be unfolded first, and then the push rod 2 can be pulled upward, so that the push rod 2 can act on the upper support rod 5 and drive the sliding sleeve assembly 6 along the front support rod 11. Sliding upwards in the lengthwise direction, the rear bracket 3 and the lower strut 5 are rotated relative to the front strut 11 to gradually unfold. After the cart frame is fully expanded, the locking mechanism is locked, and the cart frame can be stably in the unfolded state as shown in FIG. 1 .

In summary, the children's umbrella handle car of the present invention has a small number of rods in the cart frame, a simple structure, and a beautiful appearance when unfolded. The unfolding and folding operations of the cart frame only need to be carried out by pulling or pressing down. The push rod 2 can be realized, and the operation is very convenient, and the rods of the cart frame can be closely moved together after being folded, and the folded structure is very compact, takes up less space, and is convenient for storage and carrying.

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

Claims (10)

1. A children's umbrella handle car, comprising a foldable cart frame, a front wheel assembly located at the bottom front portion of the cart frame, a rear wheel assembly located at the bottom rear portion of the cart frame, The locking mechanism for locking the cart frame in the unfolded state is characterized in that the cart frame includes: A front bracket, the front bracket includes a front strut, and the front strut extends obliquely from bottom to top along the front-rear direction, and the rear part of the front strut is fixedly provided with a connecting piece; a push rod, the lower portion of which is pivotally connected to the front portion of the front bracket; a sliding assembly, the sliding assembly is slidably arranged on the front support along the length extension direction of the front support; an upper strut, the upper pivot of the upper strut is connected to the push rod, and the lower pivot of the upper strut is connected to the sliding assembly; a rear bracket, the upper pivot of the rear bracket is connected to the sliding assembly; a lower brace, the upper part of the lower brace is pivotally connected to the connecting piece on the front bracket, the lower part of the lower brace is pivotally connected to the rear bracket, When the cart frame is unfolded, a triangular structure is formed between the front support, the push rod and the upper support bar, and another triangle structure is formed between the front support, the rear support and the lower support bar. Triangular structure, when the cart frame is folded, the sliding assembly slides away from the connecting piece along the length direction of the front bracket and drives the push rod, the upper support rod, the rear bracket and the The lower struts are respectively close to the front brackets. 2. The umbrella handle car for children according to claim 1, characterized in that: the front wheel assembly is arranged at the lower part of the front pole. 3. The children's umbrella handle car according to claim 2, characterized in that: the front bracket further includes a vertical rod fixedly connected with the front support rod and extending in the vertical direction, and a vertical rod extending from the top of the vertical rod An adapter portion extending to both sides, an adapter shaft is provided between the adapter portion and the push rod, and the adapter shaft is inclined outward relative to the cart frame. 4. The umbrella handle car for children according to claim 2, characterized in that: the push rod includes a left push rod and a right push rod respectively located on the left and right sides, and the upper support rod includes an upper end pivotally connected to the The left upper strut on the left push rod and the upper right strut on the right push rod are pivotally connected, and the lower parts of the left upper strut and the right upper strut are respectively pivotally connected to the sliding assembly. 5 . The umbrella handle car for children according to claim 4 , wherein when the stroller frame is unfolded, a U-shape is formed between the left upper strut, the right upper strut and the sliding assembly. 6 . 6. The umbrella handle car for children according to claim 4, characterized in that: the left upper strut is pivotally connected to the sliding assembly through a first shaft, and the lower part of the right upper strut is pivoted through a second shaft Connected to the sliding assembly, the axes of the first shaft and the second shaft are arranged obliquely. 7. The umbrella handle car for children according to claim 2, characterized in that: the rear support includes a left rear strut and a right rear strut respectively located on the left and right sides and pivotally connected to the sliding assembly, The lower strut includes a left lower strut and a right lower strut whose upper parts are respectively pivotally connected to the upper part of the front strut, and the lower part of the left lower strut is pivotally connected to the left rear strut, so The lower part of the right lower support rod is pivotally connected to the right rear support rod. When the cart frame is unfolded, the front support rod, the right rear support rod and the right lower support rod form a Triangular structure, the front strut, the left rear strut, and the left lower strut also form a triangular structure. 8. The umbrella handle car for children according to claim 7, characterized in that: the left rear support rod is pivotally connected to the sliding assembly through a third shaft, and the right rear support rod is pivoted through a fourth shaft Connected to the sliding assembly, the third shaft is arranged obliquely to the axis of the fourth shaft. 9. The children's umbrella handle car according to any one of claims 1 to 8, characterized in that: the sliding assembly is a sliding sleeve assembly slidably sleeved on the front bracket, the lower part of the upper strut, The upper part of the rear bracket is respectively pivotally connected to the upper and lower sides of the sliding sleeve assembly. 10. The umbrella handle car for children according to claim 1, characterized in that: the push rod can be folded along its own length, and the push rod includes a lower push rod, a lower part and an upper part of the lower push rod The upper push rod is pivotally connected, and the upper part of the upper support rod is pivotally connected to the lower push rod.