CN104290794B - A kind of go-cart for double child and bracket assembly - Google Patents

Abstract

The invention relates to a double-person children's cart and a support frame assembly. The cart frame of the cart includes rear wheel brackets located on two sides, and the rear bracket located between the two rear wheel brackets is arranged on the rear bracket sequentially and slidably from top to bottom. The first sliding part, the second sliding part and the sliding pedal, the first cross strut and the second cross strut which are connected to the first sliding part and the rear wheel bracket at both ends respectively, and the two ends are respectively connected with the sliding pedal The third cross strut and the fourth cross strut that are rotatably connected to the foot and the rear wheel bracket, the first diagonal strut and the second diagonal strut that are rotatably connected to the second slider at the upper end respectively, and the lower ends of the two diagonal struts Parts are rotatably connected with the third cross strut and the fourth cross strut respectively. The pushcart of the present invention adopts a novel rear support frame assembly, and the pushcart can be opened or folded only once by stepping on or pulling it up, which is easy to operate; in addition, the present invention has a simple structure.

Description

A double stroller and support frame assembly

technical field

The invention relates to a double stroller and a support frame assembly.

Background technique

In the prior art, foldable double carts are either front and rear seat types, or left and right side by side seat structures. Wherein the vehicle frame of the pushcart of left and right side-by-side structure is locked separately, not only complicated to set up, and when carrying out unfolding or folding operation, need to operate the back brace of left and right sides, inconvenient to operate.

Contents of the invention

The technical problem to be solved by the present invention is to provide a double stroller for children that is easy to fold and open.

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

A double stroller for children, which includes a stroller frame with an unfolded state and a folded state, a front wheel assembly, and a rear wheel assembly, the stroller frame includes side brackets on both sides of the stroller, and a middle bracket between the two side brackets , a horizontally foldable rear support frame at the rear of the cart and a locking mechanism for locking the cart frame in an unfolded state, the side frame includes a front wheel bracket with a front wheel assembly at the bottom, and a rear wheel assembly at the bottom The rear wheel bracket and push handle of the assembly, the middle bracket includes a front bracket, a rear bracket whose upper end is connected to the upper end of the front bracket, wherein:

The rear bracket includes a first sliding piece, a second sliding piece and a sliding pedal which are sequentially arranged on the rear bracket from top to bottom and can slide along the length direction of the rear bracket. The first cross strut and the second cross strut, the third cross strut and the fourth cross strut that are respectively rotatably connected to the sliding pedal at one end, and the first diagonal strut that is respectively rotatably connected to the second sliding member at the upper end and the second diagonal strut, the other ends of the first horizontal strut, the second horizontal strut, the third horizontal strut, and the fourth horizontal strut are respectively connected with the rear wheel bracket on the same side in rotation, and the first diagonal strut 1. The lower end of the second diagonal strut is respectively rotatably connected with the third cross strut and the fourth cross strut.

Preferably, the first sliding member and the sliding foot are connected through a connecting rod.

Preferably, when the pushcart frame is in the unfolded state, a right triangle is formed between the first diagonal brace, the third cross brace and the rear bracket, and between the second diagonal brace, the fourth cross brace and the rear bracket.

Preferably, the locking mechanism includes a locking device for preventing the first sliding member from sliding upward, a limiting member arranged on the rear bracket for preventing the second sliding member from sliding downward, and an avoidance limit is provided on the sliding foot Parts escape groove.

Preferably, when the stroller frame is in the unfolded state, the lower side of the second sliding member abuts against the limiting member.

According to a specific aspect of the present invention: the locking mechanism includes a locking device for preventing the first sliding member from sliding upwards, the locking device includes a lock hole opened on the rear bracket, and is arranged to slide along the center line of the lock hole The deadbolt, the elastic member that is arranged between the deadbolt and the rear bracket to make the deadbolt move towards the direction of the lockhole, when the cart frame is in the unfolded state, the locking device is in the locked state, the deadbolt passes through the lockhole and Its lower side abuts against the upper side of the first slider.

Further, the locking mechanism further includes an unlocking device for unlocking the locking device. Preferably, the unlocking device is arranged on the rear bracket. According to a specific aspect: the unlocking device includes a handle arranged on the upper end of the rear bracket, and a drag cable connected to the handle and the lock tongue at both ends.

The present invention also provides a support frame assembly suitable for a double child stroller, the support frame assembly includes a support frame that can be folded laterally and a locking mechanism, the support frame includes side supports on both sides, side supports on both sides Intermediate struts between, where:

The support frame also includes a first sliding piece, a second sliding piece and a sliding pedal which are sequentially arranged on the middle pole from top to bottom and can slide along the length direction of the middle pole. The connected first cross strut and the second cross strut, one end of the third cross strut and the fourth cross strut connected with the sliding pedal respectively, and the upper end of the first diagonal connected with the second sliding piece respectively. The struts and the second diagonal struts, the other ends of the first horizontal struts, the second horizontal struts, the third horizontal struts, and the fourth horizontal struts are respectively rotatably connected to the side struts on the same side, and the first diagonal struts The lower ends of the struts and the second diagonal struts are respectively rotatably connected with the third cross struts and the fourth cross struts.

Preferably, the first sliding member and the sliding foot are connected through a connecting rod.

Preferably, when the support frame is in the unfolded state, a right triangle is formed between the first diagonal brace, the third cross brace and the middle brace, and between the second diagonal brace, the fourth cross brace and the middle brace. .

Preferably, the locking mechanism includes a locking device for preventing the first sliding member from sliding upward, a limiting member arranged on the middle support rod for preventing the second sliding member from sliding downward, and an escape limit is set on the sliding foot. Avoidance slot for parts.

According to a specific aspect of the present invention: the locking mechanism includes a locking device for preventing the first sliding member from sliding upwards, the locking device includes a lock hole opened on the middle pole, and slides along the center line of the lock hole The lock tongue that is arranged on the ground, the elastic member that is arranged between the lock tongue and the middle pole to make the lock tongue move toward the lock hole, when the cart frame is in the unfolded state, the locking device is in the locked state, and the lock tongue passes through The lock hole and its lower side are against the upper side of the first sliding piece.

Further, the locking mechanism further includes an unlocking device for unlocking the locking device. According to a specific aspect: the unlocking device includes a handle arranged on the upper end of the middle support rod, and a drag cable connected with the handle and the deadbolt at both ends.

Preferably, when the stroller frame is in the unfolded state, the lower side of the second sliding member abuts against the limiting member.

According to the present invention, the limiting member may be, for example, a limiting pin.

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

The trolley of the present invention adopts a novel rear support frame, and the trolley can be opened or folded only once by stepping on or pulling it up, which is easy to operate; in addition, the present invention has a simple structure.

Description of drawings

Fig. 1 is a three-dimensional schematic view (expanded state) of a support frame according to the present invention;

Fig. 2 is a three-dimensional schematic diagram (half-folded state) of the support frame according to the present invention;

Fig. 3 is a three-dimensional schematic view (folded state) of the support frame according to the present invention;

Fig. 4 is a three-dimensional schematic diagram (expanded state) of a double stroller using the support frame shown in Fig. 1;

Fig. 5 is a schematic rear view of Fig. 4 (expanded state);

Fig. 6 is an enlarged schematic diagram of place A in Fig. 5;

FIG. 7 is an enlarged schematic diagram of place B in FIG. 5;

Fig. 8 is a schematic rear view of Fig. 4 (folded state);

Among them: 1. Side support rod; 2. Middle support rod; 3. First sliding member; 4. Second sliding member; 5. Sliding foot; 6. First cross brace; 7. Second cross brace; 8. The third cross brace; 9. The fourth cross brace; 10. The first diagonal brace; 11. The second diagonal brace; 12. The front wheel assembly; 13. The rear wheel assembly; 14. The front wheel bracket; 15, rear wheel bracket; 16, push handle; 17, front bracket; 18, rear bracket; 19, limit piece; 20, lock hole; 21, deadbolt; 22, handle;

detailed description

This example provides a horizontally foldable support frame assembly and a double stroller including the support frame assembly. The support frame assembly includes a support frame and a locking mechanism.

As shown in Figures 1 to 3, the structure of the support frame is shown. The support frame includes side struts 1 on both sides, a middle strut 2 between the side struts 1 on both sides, arranged on the middle strut 2 from top to bottom and along the length direction of the middle strut 2 The first sliding member 3, the second sliding member 4 and the sliding pedal 5 that can slide, the first cross strut 6 and the second cross strut 7 that are respectively connected to the opposite sides of the first sliding member 3 in rotation at one end, One end of the third cross brace 8 and the fourth cross brace 9 that are rotatably connected to the opposite two sides of the sliding foot 5, and the upper end of the first diagonal brace that is rotatably connected to the opposite two sides of the second slider 4 10 and the second diagonal strut 11, the upper and lower ends of the connecting rod 23 connected with the first sliding member 3 and the sliding foot 5 respectively, the connecting rod 23, the first sliding member 3 and the sliding foot 5 can be integrally arranged, or can be Any two of them are integrally arranged or the three are arranged independently, and the other ends of the first cross brace 6, the second cross brace 7, the third cross brace 8, and the fourth cross brace 9 are connected with the side supports on the same side respectively. Rod 1 is rotatably connected, and the lower ends of the first slant brace 10 and the second slant brace 11 are rotatably connected with the third cross brace 8 and the fourth cross brace 9 respectively. The shafts are connected in rotation, and these pivots are parallel and extend along the horizontal direction. Both the first sliding member 3 and the second sliding member 4 are sliding sleeves, which are sleeved on the middle support rod 2 .

When folding, after unlocking the locking mechanism, lift the sliding foot 5 upwards with your feet, the first sliding part 3, the second sliding part 4 and the sliding footing 5 slide upwards on the middle support rod 2 as a whole, and each cross brace The rods and the diagonal struts rotate around their respective pivot points to move closer to the middle support rod 2 and drive the side support rods 1 to move closer to the middle, to the state shown in Figure 3, and the folding operation is very convenient. The support frame assembly is particularly suitable for double strollers.

This is shown in Figures 4 to 8, which show the construction of a two-person stroller. The double stroller includes a pushcart frame with an expanded state and a folded state, a front wheel assembly 12, and a rear wheel assembly 13. The pushcart frame includes side supports on both sides of the pushcart, a middle support in the middle of the pushcart, and a middle support in the middle of the pushcart. Rear laterally stowable rear frame and locking mechanism for locking the stroller frame in the unfolded position. The side support includes a front wheel support 14 with the front wheel assembly 12 at the bottom, a rear wheel support 15 and a push handle 16 with the rear wheel assembly 13 at the bottom, and the middle support includes a front support 17, an upper end and a front support 17. The rear support 18 that the upper end of the connection is connected. The rear wheel support 15 on both sides, the combination of the rear support 18 and the rear support frame are the support frames described above. The frame corresponds to the rest of the support frame, and will not be described in detail here.

In this example, the locking mechanism includes a locking device for preventing the first sliding member 3 from sliding upward, a limiter 19 arranged on the rear bracket 18 for preventing the second sliding member 4 from sliding downward, and a locking device for unlocking the locking device. The unlocking device of the sliding pedal 5 is provided with an avoidance groove for avoiding the limiter 19, so the limiter 19 can pass freely. The limiting member 19 is specifically a limiting pin.

Specifically, the locking device includes a lock hole 20 opened on the rear bracket 18, a lock tongue 21 slidably arranged along the centerline direction of the lock hole 20, and a lock tongue 21 arranged between the lock tongue 21 and the rear bracket 18 for making the lock tongue 21 is an elastic member (not shown) that moves in the direction of the lock hole 20. When the cart frame is in the unfolded state, the locking device is in a locked state, and the lock tongue 21 passes through the lock hole 20 and its lower side is in contact with the first slide The upper side of part 3 is offset. The lower side of the second slider 4 is against the stopper 19, between the first diagonal brace 10, the third cross brace 8 and the rear bracket 18, the second diagonal brace 11, the fourth cross brace 9 A stable right-angled triangle structure is respectively formed between the rear bracket 18 and the back bracket 18.

Specifically, the unlocking device includes a handle 22 disposed on the upper end of the rear bracket 18 , and a drag cable (not shown in the figure) connected to the handle 22 and the lock tongue 21 at both ends.

In addition, a handle 24 is provided on the upper end of the rear bracket 18 for easy operation.

In this example, the settings of other components of the double stroller are conventional settings in the field, and will not be described in detail here.

The opening method of the stroller of this embodiment is as follows: pull the handle 24, step on the sliding foot 5 downwards, the first sliding part 3 and the second sliding part 4 slide down along the rear bracket 18 as a whole, and at the same time, the four horizontal braces The rod is propped up, and the rear wheel support 15 is supported to both sides of the rear support 18. When the first sliding part 3 slides through the lock hole 20, the dead bolt 21 pops up and blocks the upper side of the first sliding part 3. At this time, The first slider 3 cannot slide upwards; at the same time, the second slider 4 reaches the position of the stopper 19 and cannot slide downwards. The distance between the points no longer changes, forming two stable rigid right-angled triangles, and the cart frame is locked and in an open state, as shown in Figure 5.

The folding method of the stroller of this embodiment is as follows: pull the handle 22, make the deadbolt 21 shrink into the tube body of the rear bracket 18, use the feet to stir up the sliding foot 5, the first sliding part 3, the second sliding part 4 And the sliding pedal 5 slides upwards on the rear bracket 18, and all the cross struts and diagonal struts rotate around their respective turning points to move closer to the rear bracket 18 and drive the rear wheel bracket 15 to move closer to the middle, in a folded state, as shown in Figure 8 shown.

As mentioned above, the double stroller of the present invention is not only simple in structure, but also very convenient to fold and open.

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 kind of go-cart for double child, it includes the trolley rack with deployed condition and folded state, front component, rear wheels Part, the trolley rack includes the side stand positioned at stroller both sides, the intermediate support between side stand described in two, positioned at stroller Rear portion can horizontal folding back pole-bracket and the locking mechanism for the trolley rack to be locked in deployed condition, the side stand The rear wheel support and handle of the wheel assembly are provided with including front-wheel support of the bottom provided with the front component, bottom, it is described Intermediate support includes the after-poppet that fore-stock, upper end are connected with the upper end of the fore-stock, it is characterised in that：

The back pole-bracket includes being successively set on from top to bottom on the after-poppet and along the length direction energy of the after-poppet Enough the first sliding parts for sliding, the second sliding part and slip are foot-operated, and one end rotates what is be connected with first sliding part respectively First singletree and the second singletree, one end rotate the 3rd singletree and the 4th horizontal stroke being connected with described slip step respectively Strut, upper end rotates the first hound and the second hound that are connected, and upper and lower side with the second described sliding part respectively The connecting rod that portion is connected with first sliding part and the slip step respectively, wherein the first described singletree, the second stull Bar, the 3rd singletree, the other end of the 4th singletree rotate with the rear wheel support of homonymy be connected respectively, the first described diagonal brace Bar, the bottom of the second hound rotate with the 3rd described singletree and the 4th singletree be connected respectively, the locking mechanism Including being used to prevent second from sliding for preventing the locking device of the first sliding part upward sliding, being arranged on the after-poppet The locating part of moving part slide downward and the tripper for unlocking locking device.

2. go-cart for double child according to claim 1, it is characterised in that：First sliding part and slip step pass through Connecting rod is connected.

3. go-cart for double child according to claim 1, it is characterised in that：It is described when trolley rack is in deployed condition The first hound, between the 3rd described singletree and after-poppet, second hound, the 4th described singletree and after Right angled triangle is respectively constituted between support.

4. go-cart for double child according to claim 1, it is characterised in that：Avoidance institute is offered in described slip step State the escape groove of locating part.

5. go-cart for double child according to claim 4, it is characterised in that：It is described when trolley rack is in deployed condition The following side of the second sliding part be against on the locating part.

6. go-cart for double child according to claim 1, it is characterised in that：Described locking device is described including being opened in Lockhole on after-poppet, the dead bolt slidably set along the centerline direction of the lockhole, be arranged on the dead bolt with it is described It is used for the elastic component for making dead bolt be moved towards the direction of lockhole, when the trolley rack is in deployed condition, institute between after-poppet State locking device to be in the lock state, described dead bolt passes through the lockhole and its following side and the first described sliding part Upper lateral part offsets.

7. go-cart for double child according to claim 1, it is characterised in that：The tripper is arranged on the after-poppet On.

8. a kind of bracket assembly suitable for go-cart for double child, support frame as described above component include can horizontal folding support frame And locking mechanism, support frame as described above include positioned at both sides side pole, the middle support rod between the side pole of the both sides, It is characterized in that：

Support frame as described above also includes being successively set on from top to bottom on the middle support rod and along the length of the middle support rod The first sliding part, the second sliding part and the slip that direction can be slided are foot-operated, and one end is rotated with first sliding part respectively First singletree and the second singletree of connection, the 3rd singletree that one end is connected with described slips step rotation respectively and 4th singletree, upper end rotates the first hound and the second hound being connected with the second described sliding part respectively, and The connecting rod that upper and lower end parts are connected with first sliding part and the slip step respectively, wherein the first described singletree, Two singletrees, the 3rd singletree, the other end of the 4th singletree rotate with the side pole of homonymy be connected respectively, and described first Hound, the bottom of the second hound rotate with the 3rd described singletree and the 4th singletree be connected respectively；The locking Mechanism includes being used to prevent for preventing the locking device of the first sliding part upward sliding, being arranged on the middle support rod The locating part of second sliding part slide downward and the tripper for unlocking locking device.

9. bracket assembly according to claim 8, it is characterised in that：First sliding part and slip step pass through even Bar is connected.

10. bracket assembly according to claim 8 or claim 9, it is characterised in that：Avoidance is offered in described slip step The escape groove of the locating part.