CN204432728U - A kind of children trolley - Google Patents

Abstract

The utility model relates to a kind of children trolley, comprise and there is folding and the trolley rack of deployed condition and the lockout mechanism for trolley rack being locked in deployed condition, trolley rack comprises front-wheel support, upper end and the upper end of front-wheel support rotate the rear wheel support and push rod that are connected, push rod comprises the upper push-rod that the length direction along front-wheel support is slidably arranged in the lower push-rod on front-wheel support and is slidably arranged in along the length direction of lower push-rod on lower push-rod, lockout mechanism comprises for by upper push-rod and relatively-stationary first lockout mechanism of lower push-rod and be used for lower push-rod, rear wheel support, relatively-stationary second lockout mechanism of front-wheel support three, when trolley rack folds, upper push-rod is along lower push-rod slide downward, lower push-rod is along front-wheel support slide downward, front-wheel support and rear wheel support are drawn close mutually.This go-cart folding mode is simple, and volume after folding is little, is convenient for carrying.

Description

a stroller for children

technical field

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

Background technique

In the prior art, a children's stroller generally includes a stroller frame having an unfolded state and a folded state, a front wheel assembly and a rear wheel assembly, and the stroller frame is locked by a locking mechanism when it is in the unfolded state. At present, there are many structures that can make the stroller frame foldable, and how to make the folding operation of the stroller frame easier, more convenient to fold, and smaller in size after folding has always been the goal pursued in the field of children's strollers.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an improved stroller for children.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

A stroller for children, comprising a stroller frame with a folded and unfolded state, a front wheel assembly, a rear wheel assembly and a locking mechanism for locking the stroller frame in the unfolded state, the stroller frame includes a lower end device The front wheel support of the front wheel assembly, the rear wheel support of the rear wheel assembly and the push rod are arranged at the lower end, and the upper end of the front wheel support is rotatably connected with the upper end of the rear wheel support. The push rod includes a lower push rod slidably arranged on the front wheel bracket along the length direction of the front wheel bracket and an upper push rod slidably arranged on the lower push rod along the length direction of the lower push rod. The locking mechanism includes a first locking mechanism for relatively fixing the upper push rod and the lower push rod and a second locking mechanism for relatively fixing the lower push rod, the rear wheel bracket and the front wheel bracket. Locking mechanism, when the cart frame is folded, the upper push rod slides down along the lower push rod, the lower push rod slides down along the front wheel bracket, the front wheel bracket and the The rear wheel supports move closer to each other.

The second locking mechanism includes a locking piece that is slidably arranged on the rear wheel bracket and a matching portion that is arranged on the lower push rod and locks with the locking piece. When the rod slides downward, it can contact the locking part to separate the locking part from the matching part to realize the second locking and unlocking. After unlocking, the upper push rod and the lower push rod move along the front The wheel bracket slides down.

The locking part has a locking part that cooperates and locks with the matching part. At least one of the locking part and the lower end of the upper push rod is provided with an unlocking slope. The push rod slides down through the unlocking slope to drive the locking portion of the locking member away from the matching portion so as to unlock the second locking mechanism.

The unlocking slope is formed on one side of the locking part facing the upper push rod, and the lower end of the upper push rod has a matching surface capable of matching with the unlocking slope.

The lower push rod has a hollow inner cavity, the upper push rod is slidably arranged in the inner cavity of the lower push rod, the matching part is a lock hole opened on the lower push rod, when the push rod When the cart frame is in an unfolded state, the locking member is inserted into the locking hole; when the cart frame is in a folded state, the locking member is disengaged from the locking hole.

An elastic piece for making the locking piece tend to cooperate with the matching portion is provided between the locking piece and the rear wheel bracket.

The front wheel bracket includes a front wheel bracket body provided with the front wheel assembly at the lower end and a connecting sleeve fixedly arranged on the upper end of the front wheel bracket body, and the upper end of the rear wheel bracket passes through the connecting sleeve. The pivots are rotatably connected, and the lower push rod can slide through the connecting sleeve.

The stroller also includes a cloth cover capable of forming the backrest and the seat when the stroller is unfolded, and a connecting belt connecting the cloth cover with the rear wheel bracket, and the upper part of the backrest is connected with the upper push rod , the lower end is connected with the rear end of the seat part, and the front part of the seat part is fixedly connected with the front wheel bracket.

The stroller also includes a connecting belt whose two ends are respectively connected with the upper push rod and the rear wheel bracket.

When the cart frame is in the unfolded state, the lower end of the upper push rod is located at the upper part of the lower push rod, and the lower end of the lower push rod is located at the upper part of the front wheel support; when the cart When the frame is in the folded state, the lower end of the upper push rod is located at the lower part of the lower push rod, and the lower end of the lower push rod is located below the lower end of the front wheel bracket.

When the children's stroller of the present invention is folded, the upper push rod can be slid down along the lower push rod first, and then the upper push rod and the lower push rod can be slid down along the front wheel bracket together; Slide the wheel bracket down, then slide the upper push rod down along the lower push rod.

Due to the application of the above-mentioned technical solutions, the utility model has the following advantages compared with the prior art:

When the children's stroller of the utility model is folded, the upper push rod slides downward along the lower push rod, and the lower push rod slides downward along the front wheel bracket.

Description of drawings

Fig. 1 is a perspective view of the stroller when it is unfolded (cloth cover and connection belt are not shown);

Figure 2 is the front view of the stroller when it is in the unfolded state (cloth cover and connecting belt are not shown);

Fig. 3 is a side view when the stroller is in an unfolded state;

Fig. 4 is a longitudinal partial sectional view of the stroller when it is in the unfolded state (cloth cover and connecting belt are not shown);

Figure 5 is an enlarged view of A in Figure 4 (the second locking mechanism is in an unlocked state);

Fig. 6 is a side view of the stroller when the upper push rod of the stroller slides into the lower push rod (cloth cover and connecting belt are not shown);

Figure 7 is a side view of the stroller when it is in a folded state (cloth cover and connecting belt are not shown);

In the figure: 1, front wheel assembly; 2, rear wheel assembly; 3, front wheel bracket; 31, front wheel bracket body; 32, connecting sleeve; 4, rear wheel bracket; 5, push rod; 51, upper push rod; 52. Lower push rod; 6. Locking piece; 7. Cloth cover; 71. Backrest; 72. Seat part; 8. Connecting belt; 9. Elastic part; 10. Keyhole; ; 13. Limiting part; a. Unlocking slope; b. Cooperating surface.

Detailed ways

The utility model is further described below in conjunction with the accompanying drawings of the description:

As shown in Figures 1 to 7, a children's stroller includes a stroller frame with folded and unfolded states, a front wheel assembly 1, a rear wheel assembly 2, and a locking mechanism for locking the stroller frame in an unfolded state. The vehicle frame includes a front wheel bracket 3 with a front wheel assembly 1 at the lower end, a rear wheel bracket 4 with a rear wheel assembly 2 at the lower end, and a push rod 5. The lower push rod 52 on the front wheel bracket 3 and the upper push rod 51 that is slidably arranged on the lower push rod 52 along the length direction of the lower push rod 52, the locking mechanism includes a mechanism for making the upper push rod 51 and the lower push rod 52 relatively The fixed first locking mechanism and the second locking mechanism for relatively fixing the lower push rod 52, the rear wheel bracket 4, and the front wheel bracket 3, when the cart frame is folded, the upper push rod 51 moves along the lower push rod 52. Sliding downwards, the lower push rod 52 slides down along the front wheel bracket 3, and the front wheel bracket 3 and the rear wheel bracket 4 move closer to each other.

The second locking mechanism includes a locking piece 6 that is slidably arranged on the rear wheel bracket 4 and a matching portion that is arranged on the lower push rod 52 and locks with the locking piece 6. When the upper push rod 51 slides downward along the lower push rod 52, it can be connected The locking part 6 contacts to separate the locking part 6 from the mating part to unlock the second locking mechanism. After unlocking, the upper push rod 51 and the lower push rod 52 slide down along the front wheel bracket 3 together.

The locking part 6 has a locking part that cooperates with the matching part to lock. At least one of the locking part and the lower end of the upper push rod 51 is provided with an unlocking slope a, and the upper push rod 51 slides down along the lower push rod 52 to pass through the unlocking process. The slope a drives the locking portion of the locking member 6 away from the matching portion so as to unlock the second locking mechanism.

In this example, an unlocking slope a is provided on the locking portion of the locking member 6 . Specifically, the unlocking slope a is formed on one side of the locking portion of the locking member 6 facing the upward push rod 51 , and the lower end of the upper push rod 51 has a mating surface b capable of cooperating with the unlocking slope a.

The lower push rod 52 has a hollow inner cavity, and the upper push rod 51 is slidably arranged in the inner cavity of the lower push rod 52. The matching part is the lock hole 10 provided on the lower push rod 52. When the cart frame is in the unfolded state, the locking member The locking part of 6 is inserted into the locking hole 10; when the cart frame is in the folded state, the locking part of the locking part 6 is out of the locking hole 10.

An elastic member 9 for making the locking portion of the locking member 6 tend to cooperate with the locking hole 10 is provided between the locking member 6 and the rear wheel bracket 4 .

The front wheel bracket 3 of the pushcart of the present utility model comprises the front wheel bracket body 31 that is provided with the front wheel assembly 1 at the lower end and the connecting sleeve 32 that is fixedly arranged on the upper end of the front wheel bracket body 31, and the upper end of the rear wheel bracket 4 is connected to the front wheel bracket body 31. The sleeve 32 is rotatably connected by a pivot, and the lower push rod 52 can slide through the connecting sleeve 32 .

The lower push rod 52 is provided with a limiting portion 13 for preventing the lower push rod 52 from detaching from the connection sleeve 32 .

The utility model children's stroller also includes a cloth cover 7 that can form a backrest 71 and a seat 72 when the stroller is unfolded, and a connecting belt 8 that connects the cloth cover 7 and the rear wheel bracket 4. The upper part of the backrest 71 and the upper The push rod 51 is connected, the lower end is connected with the rear end of the seat part 72, and the front part of the seat part 72 is fixedly connected with the front wheel bracket 3, and the cloth cover 7 is opened by pulling the upper push rod 51 and sliding upward along the length direction of the lower push rod 52. , and then drive and straighten the connecting belt 8, so that the rear wheel bracket 4 is launched.

The children's stroller of the utility model can also directly connect the two ends of the connection belt 8 to the upper push rod 51 and the rear wheel bracket 4 respectively, and slide the connection belt upwards along the length direction of the lower push rod 52 by pulling the upper push rod 51 8, making the rear wheel bracket 4 unfold.

When the stroller frame of the children's stroller of the utility model is in the unfolded state, the lower end of the upper push rod 51 is positioned at the top of the lower push rod 52, and the lower end of the lower push rod 52 is positioned at the top of the front wheel bracket 3; state, the lower end of the upper push rod 51 is positioned at the bottom of the lower push rod 52, and the lower end of the lower push rod 52 is positioned below the lower end of the front wheel bracket 3.

In practical application, a handrail bar 11 and a tent bar 12 etc. will be added on the stroller frame of the children's stroller, as shown in Figure 4 .

The folding and unfolding principle of the children's stroller of the utility model:

As shown in Figures 1 to 4, the baby stroller is in the unfolded state, the lower end of the upper push rod 51 is located on the upper part of the lower push rod 52, and the lower end of the lower push rod 52 is located on the upper part of the front wheel bracket 3, the first locking mechanism will The upper push rod 51 and the lower push rod 52 are relatively locked, and the second locking mechanism relatively locks the lower push rod 52, the rear wheel bracket 4, and the front wheel bracket 3, and the whole vehicle is in a locked state. , to unlock the first locking mechanism, push the upper push rod 51 to slide downward in the lower push rod 52, and when the upper push rod 51 slides to the matching surface b at its lower end to match the unlocking slope a on the locking member 6, continue to push downward Push up the push rod 51, then the upper push rod 51 will push the locking portion of the locking part 6 out of the lock hole 10 on the lower push rod 52, and the second locking mechanism will be unlocked. After unlocking, continue to push the upper push rod 51 downward to drive the lower The push rod 52 slides downward along the front wheel bracket 3 until the lower end of the lower push rod 52 slides below the lower end of the front wheel bracket 3 and cannot continue to slide. Move closer to the front wheel support 3 under the action of gravity to complete the folding. Referring to Fig. 7, after folding, the lower end of the upper push rod 51 is positioned at the bottom of the lower push rod 52, and the lower end of the lower push rod 52 is positioned below the lower end of the front wheel bracket 3, and the rear wheel bracket 4 is close to the front wheel bracket 3. The folding volume of the whole vehicle is small.

When the cart needs to be unfolded, the upper push rod 51 is pulled upwards so that the upper push rod 51 slides upwards along the lower push rod 52, and the lower push rod 52 is driven to slide upwards along the front wheel bracket 3, and at the same time, the cloth cover 7 is driven to unfold, and the cloth cover 7 is unfolded. The expansion of the cover 7 drives the connecting belt 8 to straighten, and then drives the rear wheel support 4 to unfold. After the rear wheel support 4 is fully unfolded, the lower push rod 52, the rear wheel support 4 and the front wheel support 3 are pushed down by the second locking mechanism. Relatively locked, then use the first locking mechanism to relatively lock the upper push rod 51 and the lower push rod 52, and the deployment is completed, as shown in Figures 1-4.

To sum up, when the push rod 51 of the utility model is pushed down, the folding of the stroller can be completed, and when the push rod 51 is pulled up, the push rod can be unfolded. , The folding and unfolding operation is simple, and it can be folded and opened with one hand. After folding, it is small in size and easy to carry. After folding, the rear wheel assembly 2 and the lower push rod 52 are used to support the ground, so that the cart can be folded and self-supporting, which is convenient for practical application.

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

Claims (10)

1. a children trolley, comprise the trolley rack with folding and deployed condition, front component, wheel assembly and the lockout mechanism for described trolley rack being locked in deployed condition, described trolley rack comprises the front-wheel support that bottom is provided with described front component, bottom is provided with rear wheel support and the push rod of described wheel assembly, the upper end of described front-wheel support rotates with the upper end of described rear wheel support and is connected, it is characterized in that: the length direction that described push rod comprises along described front-wheel support is slidably arranged in the lower push-rod on described front-wheel support and is slidably arranged in the upper push-rod on described lower push-rod along the length direction of described lower push-rod, described lockout mechanism comprises for by described upper push-rod and relatively-stationary first lockout mechanism of lower push-rod and be used for described lower push-rod, rear wheel support, relatively-stationary second lockout mechanism of front-wheel support three, when described trolley rack folds, described upper push-rod is along described lower push-rod slide downward, described lower push-rod is along described front-wheel support slide downward, described front-wheel support and described rear wheel support are drawn close mutually.

2. children trolley according to claim 1, it is characterized in that: described second lockout mechanism comprises the locking piece that is slidably arranged on described rear wheel support and is arranged on described lower push-rod and coordinates with described locking piece the auxiliary section locked, described locking piece and described mating part lock unlock from realizing described second along contacting with described locking piece during described lower push-rod slide downward by described upper push-rod, after unblock, described upper push-rod and described lower push-rod are together along described front-wheel support slide downward.

3. children trolley according to claim 2, it is characterized in that: described locking piece has and coordinates with described auxiliary section the locking part locked, at least one in two, the bottom of described locking part, described upper push-rod is provided with unblock inclined-plane, and described upper push-rod drives the described locking part of described locking piece away from described auxiliary section along described lower push-rod slide downward by described unblock inclined-plane thus described second lockout mechanism is unlocked.

4. children trolley according to claim 3, is characterized in that: described unblock inclined-plane is formed in the side towards described upper push-rod of described locking part, and the bottom of described upper push-rod has the fitting surface that can match with described unblock inclined-plane.

5. children trolley according to claim 2, it is characterized in that: described lower push-rod has hollow cavity, described upper push-rod is slidably arranged in the inner chamber of described lower push-rod, described auxiliary section is be opened in the lockhole on described lower push-rod, when described trolley rack is in deployed condition, described locking piece is plugged in described lockhole; When described trolley rack is in folded state, described locking piece departs from described lockhole.

6. children trolley according to claim 2, is characterized in that: described locking piece be provided with between rear wheel support for making described locking piece tend to the elastic component coordinated with described auxiliary section.

7. children trolley according to claim 1, it is characterized in that: described front-wheel support comprises bottom and is provided with the front-wheel support body of described front component and is fixedly installed on the adapter sleeve of described front-wheel support body upper end, the upper end of described rear wheel support and described adapter sleeve are rotated by pivot and are connected, and described lower push-rod can slidably pass through described adapter sleeve.

8. children trolley according to claim 1, it is characterized in that: described go-cart is also included in the cloth cover that can to form back-rest and seat portion when go-cart is in expansion and described cloth is overlapped the connecting band be connected with rear wheel support, the top of described back-rest is connected with described upper push-rod, lower end is connected with the rear end of described seat portion, and the front portion of described seat portion is fixedly connected with described front-wheel support.

9. children trolley according to claim 1, is characterized in that: described go-cart also comprises the connecting band that two ends are connected with rear wheel support with described upper push-rod respectively.

10. the children trolley any one of claim 1 ~ 9 described in claim, it is characterized in that: when described trolley rack is in deployed condition, the lower end part of described upper push-rod is in the top of described lower push-rod, and the lower end part of described lower push-rod is in the top of described front-wheel support; When described trolley rack is in folded state, the lower end part of described upper push-rod is in the bottom of described lower push-rod, and the lower end part of described lower push-rod is in the below of described front-wheel support bottom.