CN104401380B - A kind of folding children's umbrella handle vehicle - Google Patents

Abstract

The invention relates to a foldable children's umbrella handle car, which includes a frame, a front wheel assembly and a rear wheel assembly. The rod, the front bracket, the rear bracket and the seat post are connected to each other to form a triangular three-bar linkage mechanism. Two of the three connections of these three parts are connected by rotation, and the other is connected by a sliding piece. One of the two connected parts can be slidably arranged along the length direction, and is connected with the other in rotation, and the umbrella handle car also includes a locking mechanism for relatively locking the sliding part and the rod part provided with the sliding part , the unlocking piece arranged on the sliding piece, and the folding operating piece whose two ends are respectively connected with the unlocking piece on both sides. By operating the folding operating piece, the unlocking piece can be driven to unlock the locking mechanism and slide the sliding piece so that the front bracket, the rear The bracket and seatpost fold together. The folding of the present invention is very convenient, and the structure is simple.

Description

A foldable children's umbrella handle car

technical field

The invention relates to a foldable children's cart, in particular to an umbrella handle cart.

Background technique

There are two main types of baby/child strollers on the market at present, one is an ordinary stroller, and the other is a lightweight umbrella handle stroller. Compared with ordinary carts, the umbrella cart is very convenient, and it is very small after folding, which is suitable for going out, especially when taking other means of transportation, such as a bus, which is very convenient.

In the prior art, the vehicle frame of a foldable umbrella handle usually includes side brackets on both sides, a bottom bracket and a rear bracket arranged between the side brackets on both sides, and each side bracket includes a front bracket, a lower part and a front bracket. The upper end of the push rod, the rear bracket and the connecting rod are rotatably connected, the upper end of the rear bracket is also rotatably connected with the push rod, the connecting rod is arranged between the front bracket and the rear bracket, and its front end rotates with the front bracket connected, the rear end is rotatably connected with the rear bracket, and generally extends along the horizontal direction. The existing umbrella handle car needs multi-step operations when it is folded, and it cannot realize "one-handle and fold", and the operation of closing the car is not convenient enough. At the same time, the existing umbrella handle car is often connected by plastic parts between the front bracket and the push rod. Coupled with the characteristics of the umbrella handle itself, it is easy to retract when the frame is loaded, which affects the safety and comfort of use. In addition, the existing umbrella handles must be arranged through connecting rods to strengthen the rigidity of the frame, and there are many rods.

Contents of the invention

The technical problem to be solved by the present invention is to provide a foldable children's umbrella handle car with simple structure and convenient folding operation.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

A foldable children's umbrella handle car, comprising a vehicle frame in an unfolded state and a folded state, a front wheel assembly and a rear wheel assembly, the vehicle frame includes side brackets on both sides, and is arranged between the side brackets on both sides and can be positioned horizontally The folded support frame, the side frame includes a front frame with the front wheel assembly at the bottom, a rear frame with the rear wheel assembly at the bottom, and a seatpost extending in the front-to-back direction, the front frame, the rear frame, the seat The three parts of the rod are connected to each other to form a triangular three-bar linkage mechanism. Two of the three connections of the three parts are connected by rotation, and the other is connected by a sliding piece. The length direction of one of the parts can be slidably set, and is connected with the other of the two connected parts in rotation, and the umbrella handle car also includes a sliding part and a sliding part for slidingly providing the sliding part. The locking mechanism for the relative locking of the rods, the unlocking piece arranged on the sliding piece for unlocking the locking mechanism, and the folding operating piece whose two ends are connected to the unlocking pieces on both sides respectively, can drive the unlocking piece to move The locking mechanism unlocks and slides the sliders so that the front bracket, rear bracket and seatpost fold together.

According to the present invention, there are no particular limitations on the locking mechanism. However, the locking mechanism is preferably arranged between the slide and the rod on which the slide is slidably provided.

Further, the locking mechanism includes a locking piece slidably provided on the sliding piece, and a matching part which is arranged on the rod piece slidably provided with the sliding piece and cooperates with the locking piece to lock. The unlocking piece is driven by the folding operation piece The lock piece can be slid to be engaged with or disengaged from the fitting portion.

Further, the matching portion may be, for example, a lock hole or a lock slot.

Further, the unlocking part is rotatably arranged on the sliding part, and the unlocking part is also rotatably connected with the locking part. When the unlocking part rotates relative to the sliding part, it will drive the locking part to slide, so as to cooperate with or separate from the matching part.

According to a specific aspect, the unlocking member is rotatably connected to the sliding member through a first pivot, and is rotatably connected to one end of the locking member through a second pivot, the first pivot and the second pivot are parallel, and the locking member and The opposite end of the one end cooperates and locks with the matching portion. Preferably, the first pivot is closer to said lever slidably provided with the slider than the second pivot.

Further, preferably, a return torsion spring is provided between the sliding member and the unlocking member. Specifically, both ends of the returning torsion spring can be respectively connected to the sliding member and the unlocking member or sleeved on the rotating shaft between them. Setting the reset torsion spring can make the locking mechanism automatically convert from the unlocked state to the locked state, which is convenient for operation.

Further, the upper end of the rear bracket is connected to the front bracket, and the front and rear ends of the seatpost are respectively connected to the front bracket and the rear bracket. Where the bracket, seatpost and rear bracket join.

According to a specific and preferred aspect, the rear support and the front support are connected through the sliding piece, and the sliding piece is slidably arranged on the front support, and the sliding piece is rotatably connected with the rear support through a pivot. More preferably, when folded, the slider slides upwards along the front support.

According to yet another specific aspect, the seatpost is connected to the rear bracket or the front bracket through the slider, and the slider is slidably arranged on the rear bracket or the front bracket, and the slider and the seatpost are rotatably connected through a pivot .

Preferably, the above-mentioned sliding member is a sliding sleeve, which is sheathed on the corresponding component.

Preferably, the folding operating member is in the shape of a belt.

Preferably, both ends of the folding operation member are respectively connected to the unlocking members on both sides.

Further, the support frame includes a horizontally foldable bottom bracket arranged between the front brackets on both sides and the rear brackets on both sides, and a horizontally foldable rear bracket arranged between the rear brackets on both sides. shelf. The bottom bracket and the rear bracket can adopt any structural form in the field without any special limitation. For example, the bottom support frame can be a common cross support frame, and the rear support frame can be a common parent-child support form.

According to a specific aspect of the present invention, the bottom brace includes a first bottom brace and a second bottom brace that intersect and are rotatably connected at the intersection, and the front ends of the first bottom brace and the second bottom brace are respectively connected to The front supports on both sides are rotatably connected, and the rear ends are respectively rotatably connected to the rear supports on both sides.

The rear brace includes a longitudinal connecting rod, a connecting seat slidably arranged on the longitudinal connecting rod, an upper cross brace, a lower cross brace located below the upper cross brace, a first diagonal brace, a second diagonal brace Rod, the upper cross brace includes a first strut and a second strut whose outer ends are rotatably connected to the rear brackets on both sides, the inner ends of the first strut, the second strut and the upper end of the longitudinal link connected in rotation, the lower cross brace includes a third pole and a fourth pole whose outer ends are respectively rotationally connected to the rear brackets on both sides, and the lower ends of the third pole, the fourth pole and the longitudinal link The upper ends of the first diagonal strut and the second diagonal strut are respectively connected to the opposite sides of the connecting base in rotation, and the lower ends are respectively connected to the outer ends of the third strut and the fourth strut. Turn to connect. Further, pedals are provided at the joints of the longitudinal link, the third pole and the fourth pole.

According to a specific aspect of the present invention, the seat of the children's umbrella handle car is formed by setting a cloth cover on the seat post. The cloth cover has a first part and a second part, the first part is sleeved on the seat post to form a seat plate, and the upper part of the second part is connected with the front brackets on both sides to form a backrest.

According to the present invention, the front bracket is preferably composed of one rod, and may also be composed of two or more rods fixedly connected. Preferably, a handle is provided on the upper end of the front support for easy operation.

The rotational connections between the two components in the present invention are preferably rotationally connected through pivots.

Due to the implementation of the above technical solutions, the present invention has the following advantages compared with the prior art:

The folding of the present invention is very convenient, only need to pull the folding operating part to unlock the frame and drive the entire frame to fold, with the effect of carrying and folding; in addition, the structure of the present invention is simple, compared with the umbrella handle car of the prior art There is no need to set a connecting rod, but it can also maintain good rigidity, and the frame will not retract after loading.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram (in the unfolded state) of the foldable children's umbrella handle car of embodiment 1;

Fig. 2 is a schematic side view of Fig. 1;

Fig. 3 is another three-dimensional schematic diagram of the foldable children's umbrella handle car of embodiment 1 (in the unfolded state);

Fig. 4 is a three-dimensional schematic diagram of the umbrella handle car in Fig. 1 (in the process of folding);

Fig. 5 is a three-dimensional schematic diagram of the umbrella handle car in Fig. 1 (in a folded state);

Fig. 6 is a schematic structural view of the slider in embodiment 1 when it is in a locked state;

Fig. 7 is a schematic structural view of the slider in embodiment 1 when it is in a locked state;

Fig. 8 is a schematic structural diagram of the foldable children's umbrella handle car of embodiment 2 (in the unfolded state);

Fig. 9 is a schematic structural diagram of the foldable children's umbrella handle car of embodiment 2 (during the folding process);

Fig. 10 is a schematic structural diagram of the foldable children's umbrella handle car of Embodiment 2 (in the folded state);

Fig. 11 is a schematic structural diagram of the foldable children's umbrella handle car of embodiment 3 (in the unfolded state);

Fig. 12 is a schematic structural diagram of the foldable children's umbrella handle car of embodiment 3 (during the folding process);

Fig. 13 is a schematic structural diagram of the foldable children's umbrella handle car of embodiment 3 (in the folded state);

Among them: 1. Front wheel assembly; 2. Rear wheel assembly; 31. The first part; 32. The second part; 4. Side support; 40. Front support; 40a, keyhole; 41. Rear support; 42. Seat post; 43. Handle; 5. Pedal; 60. Sliding part; 61. Locking part; 62. Unlocking part; 7. Folding operation part; Rod; 9, rear support frame; 90, longitudinal connecting rod; 91, connecting seat; 92, first diagonal strut; 93, second diagonal strut; 94, first strut; 95, second strut; 96 , the third pole; 97, the fourth pole; a, the first pivot; b, the second pivot.

detailed description

Example 1

Referring to FIG. 1 to FIG. 7 , this example provides a foldable children's umbrella handle car, which includes a frame with an unfolded state and a folded state, a front wheel assembly 1 , and a rear wheel assembly 2 . The vehicle frame specifically includes symmetrical side brackets 4 located on both sides, and a laterally foldable support frame arranged between the side brackets 4 on both sides.

Further, the side bracket 4 includes a front bracket 40 which is composed of a rod and is provided with the front wheel assembly 1 at the bottom, a rear bracket 41 with the rear wheel assembly 2 at the bottom, a seatpost 42 extending in the front-to-rear direction, and a seat post 42 arranged at the front The handle 43 on the upper end of the bracket 40 . The front bracket 40, the rear bracket 41, and the seat post 42 form a triangular three-link mechanism. Specifically, the front bracket 40 and the rear bracket 41 are connected by a sliding piece 60 . The upper end of the rear bracket 41 is pivotally connected to the slider 60 . The front and rear ends of the seatpost 42 are pivotally connected to the lower part of the front bracket 40 and the middle and lower part of the rear bracket 41 respectively. The junction with the front bracket 40, the seat post 42 and the rear bracket 41.

The umbrella handle car also includes a locking mechanism for locking the sliding part 60 and the front bracket 40 relative to each other, an unlocking part 62 arranged on the sliding part 60 to unlock the locking mechanism, and a folding operation part 7 connected with the unlocking part 62 . Specifically, the folding operation member 7 is in the shape of a belt, and its two ends are respectively connected to the unlocking members 62 on both sides. The sliding member 60 is specifically a sliding sleeve, which is sleeved on the front bracket 40 . When folding, pull the folding operating part 7 upwards to drive the unlocking part 62 to unlock the locking mechanism and make the sliding part 60 slide upward along the front bracket 40, so that the front bracket 40, the rear bracket 41 and the seat post 42 are folded closer.

Further, the supporting frame includes a horizontally foldable bottom frame 8 arranged between the front frame 40 and the rear frame 41 and a laterally foldable rear frame 9 arranged between the rear frames 41 on both sides.

In this example, the bottom brace 8 includes a first bottom brace 80 and a second bottom brace 81 that intersect and are rotatably connected at the intersection. The front ends of the first bottom brace 80 and the second bottom brace 81 are respectively It is rotatably connected with the front brackets 40 on both sides, and the rear end is rotatably connected with the rear brackets 41 on both sides respectively.

In this example, the rear brace 9 includes a longitudinal link 90, a connecting seat 91 slidably arranged on the longitudinal link 90, an upper cross brace, a lower cross brace below the upper cross brace, a first diagonal brace Rod 92, the second diagonal strut 93, the upper cross strut includes the first strut 94 and the second strut 95 whose outer ends are respectively connected to the rear brackets 41 on both sides in rotation, the first strut 94, the second strut The inner end of the rod 95 is rotatably connected to the upper end of the longitudinal link 90. The lower cross brace includes a third strut 96 and a fourth strut 97 whose outer ends are respectively rotatably connected to the rear brackets 41 on both sides. The inner ends of the three struts 96 and the fourth strut 97 are rotatably connected with the lower end of the longitudinal link 90, and the upper ends of the first slanting strut 92 and the second slanting strut 93 are respectively connected to two opposite sides of the connecting seat 91. The side is rotationally connected, and the lower end is rotationally connected with the outer ends of the third pole 96 and the fourth pole 97 respectively. A foot pedal 5 is provided at the junction of the longitudinal link 90 , the third strut 96 and the fourth strut 97 .

In this example, the seat of the children's umbrella handle car is formed by setting a cloth cover on the seat post 42 . The cloth cover has a first part 31 and a second part 32 . The first part 31 is sheathed on the seat post 42 to form a seat plate, and the upper part of the second part 32 is connected with the front brackets 40 on both sides to form a backrest.

The present invention is not particularly limited to the above-mentioned locking mechanism, and those arrangements commonly used in the art can be used. Specifically in this example, the locking mechanism is preferably provided between the slider 60 and the front bracket 40 . Specifically, referring to Fig. 6 and Fig. 7, the locking mechanism includes a locking member 61 slidably arranged on the sliding member 60, a lock hole 40a or a lock groove which is arranged on the front bracket 40 and can be locked with the locking member 61 or other capable When the locking part 61 is inserted into the locking hole 40a, the locking mechanism is locked, and the sliding part 60 is locked and cannot slide. When the locking part 61 is out of the locking hole 40a, the locking mechanism is unlocked. The slider 60 can slide. The unlocking member 62 is rotatably connected to the sliding member 60 and the locking member 61 through parallel first pivots a and second pivots b, wherein the first pivot a is closer to the front bracket 40 than the second pivot b. When the unlocking member 62 rotates around the first pivot a, it can drive the locking member 61 to slide and engage with or disengage from the locking hole 40a. When turning toward the F direction shown in FIG. 6 , the locking member 61 is driven by the unlocking member 62 to slide away from the locking hole 40a so as to break away from the locking hole 40a to realize unlocking. When turning in the direction of rotation, the locking member 61 is driven by the unlocking member 62 to slide toward the direction close to the locking hole 40a so that the locking member 61 is inserted into the locking hole 40a to achieve locking. In addition, between the sliding piece 60 and the unlocking piece 62 , a return torsion spring whose two ends are respectively connected to the sliding piece 60 and the unlocking piece 62 is provided. Under the action of the return torsion spring, the locking mechanism can automatically switch from the unlocked state to the locked state. The unlocking parts 62 on both sides are connected by the folding operating part 7, and the folding operating part 7 is lifted upwards. The unlocking part 62 rotates along the F direction with the first pivot a as the axis, and drives the locking part 61 to slide and open from the lock hole 40a. Slide out the middle, so that both sides are unlocked simultaneously, and then drive the sliding member 60 to slide together. The locking mechanism and unlocking member 62 of this example are not only simple in structure but also easy to operate.

Unless otherwise specified, the rotational connections between the above two components are all rotational connections through pivots.

The folding process of the children's umbrella handle car in this example is as follows: Referring to Figure 3, first unlock the rear bracket 9 in the upward direction, that is, the D direction, and then move the folding operation part 7 in the upward direction to unlock the sliding part 6, and then the sliding part 6 Sliding along the direction A (along the upward direction of the front bracket 40), the rear bracket 41 and the seat post 42 are driven to rotate relative to the front bracket 40 and gradually move closer to the front bracket 40, and the rear bracket 9 is gradually retracted along the left and right directions, driving the bottom bracket 8 is folded along the left and right directions, as shown in Figure 4, and finally folded to form the state shown in Figure 5.

To sum up, compared with the existing umbrella handle car, the folding operation of this umbrella handle car is very convenient, and it can be folded at the same time. At the same time, the structure is simpler, the setting is more convenient, the rigidity of the whole car is good, and the frame will not Adduction.

Example 2

This example provides a foldable children's umbrella handle car, see Figures 8-10, which is basically the same as Example 1, the difference is that the front end of the seat post 42 is connected to the lower part of the front bracket 40 through a sliding piece 60, and the seat Between the rod 42 and the rear support 41 , between the front support 40 and the rear support 41 are respectively rotatably connected by pivots. The sliding member 60 can slide along the extending direction of the front bracket 40 , and is rotatably connected with the seatpost 42 through a pivot.

In this example, when the umbrella handle is folded, after the rear bracket is unlocked, the folding operating part is pulled to unlock the locking mechanism, and then the sliding part 60 is pulled to slide upward along the front bracket 40 to drive the seat post 42 to rotate relative to the rear bracket 40 and gradually move backward. Bracket 41 draws close, drives rear bracket 41 to rotate relative to front bracket 40 and moves closer to front bracket 40 gradually at the same time, rear bracket draws in gradually along the left and right directions, drives bottom bracket to draw in along left and right directions, and finally folds to form the state shown in Figure 10. The umbrella handle car of this example also has the effect of "one-carrying and folding".

Example 3

This example provides a foldable children's umbrella handle car, see Figures 11-13, which is basically the same as Embodiment 1, the difference is that the rear end of the seatpost 42 is connected to the rear bracket 41 through a slider 60, and the seatpost 42 and the front bracket 40, and between the front bracket 40 and the rear bracket 41 are respectively rotatably connected by pivots. The sliding member 60 can slide along the extension direction of the rear bracket 41 and is connected to the seat post 42 through a pivot. A locking mechanism is provided between the sliding member 60 and the rear bracket 41 to lock the two relative to each other. The structure and principle of the locking mechanism are the same as those in the first embodiment.

In this example, when the umbrella handle is folded, after the rear bracket is unlocked, the folding operating part is pulled to drive the unlocking part to unlock the locking mechanism. Afterwards, the sliding part 60 is pulled to slide downward along the rear bracket 41, driving the rear bracket 41 and the seat post 42 to face each other. The front bracket 40 rotates and gradually moves closer to the front bracket 40 , and the rear bracket gradually draws in along the left and right directions, and finally folds to form a state as shown in FIG. 13 . The umbrella handle car of this example also has the effect of "one-carrying and folding".

The present invention has been described in detail above, and its purpose is to allow those familiar with this field to understand the content of the present invention and implement it, and can not limit the scope of protection of the present invention. Effect changes or modifications should be covered within the protection scope of the present invention.

Claims (10)

1. A foldable children's umbrella handle car, comprising a vehicle frame, a front wheel assembly and a rear wheel assembly with an unfolded state and a folded state, the vehicle frame includes side supports positioned at both sides, side brackets located at the two sides A support frame that can be folded laterally between the brackets, the side bracket includes a front bracket with the front wheel assembly at the bottom, a rear bracket with the rear wheel assembly at the bottom, a seat post extending in the front-rear direction, cloth The sleeve is characterized in that: the three parts of the front bracket, the rear bracket and the seat post are connected to each other to form a triangular three-link mechanism, two of the three connections of the three parts are rotational connections, and the other Connected by a sliding piece, the sliding piece can be slidably arranged along the length direction of one of the two connected parts, and is rotatably connected with the other of the two connected parts, and the cloth cover It has a first part and a second part, the first part is sleeved on the seatpost to form a seat plate, the upper part of the second part is connected with the front brackets on both sides to form a backrest, and the umbrella handle cart also includes a The sliding member and the locking mechanism that is slidably provided with the rod member that is slidably locked relative to each other, the unlocking member that is provided on the sliding member for unlocking the locking mechanism, and the two ends and the two sides respectively The folding operation part connected with the unlocking part, the folding operation part is located at the rear side of the backrest, and by operating the folding operation part, the unlocking part can be driven to unlock the locking mechanism and make the sliding part slide so that the The front bracket, the rear bracket and the seat post are folded close together. 2. The foldable children's umbrella handle car according to claim 1, characterized in that: the locking mechanism includes a locking piece slidably arranged on the sliding piece, a rod piece set on the sliding piece and connected to The locking part cooperates with the locked matching part, and the unlocking part can make the locking part cooperate with or separate from the matching part driven by the folding operating part. 3. The foldable children's umbrella handle car according to claim 2, wherein the matching part is a lock hole or a lock groove. 4. The foldable children's umbrella handle car according to claim 2, characterized in that: the unlocking part is rotatably arranged on the sliding part, and the unlocking part is also rotatably connected to the locking part. 5. The foldable children's umbrella handle car according to claim 4, characterized in that: the unlocking member is rotatably connected to the sliding member through a first pivot, and connected to one end of the locking member through a second pivot Rotationally connected, the first pivot and the second pivot are parallel, and the end of the locking member opposite to the one end cooperates and locks with the matching portion. 6. The foldable children's umbrella handle car according to any one of claims 1 to 5, wherein the upper end of the rear bracket is connected to the front bracket, and the front and rear ends of the seat post The parts are respectively connected with the front bracket and the rear bracket. When the vehicle frame is in the unfolded state, the joints of the front bracket and the rear bracket are higher than the joints of the seat post and the front bracket, and the joints of the seat post and the rear bracket . 7. The foldable children's umbrella handle car according to claim 6, characterized in that: the rear bracket and the front bracket are connected by the sliding piece, and the sliding piece is slidably arranged on the front bracket, sliding The part is rotatably connected with the rear support through a pivot. 8. The foldable children's umbrella handle car according to claim 6, characterized in that: said seatpost is connected to said rear bracket or front bracket through said sliding piece, and the sliding piece is slidably arranged on said On the rear bracket or the front bracket, the slider is pivotally connected to the seat post through a pivot. 9. The foldable children's umbrella handle car according to claim 1, wherein the folding operation member is in the shape of a belt. 10. The foldable children's umbrella handle car according to claim 1 or 9, characterized in that: the front bracket is composed of one rod, or two or more rods are fixedly connected.