CN103661543B - A kind of children trolley - Google Patents

Abstract

<b>A kind of stroller for children, including a stroller frame, a front wheel assembly, a rear wheel assembly, a locking mechanism for locking the stroller frame in an unfolded position, set on the stroller The seat on the frame, the cart frame includes side brackets located on the left and right sides, and a connecting frame connected between the side brackets on both sides. When the cart frame is in the unfolded position, the push rod frame is inclined to the rear side of the cart frame. When it is necessary to fold the cart frame, turn the push rod frame so that the length direction of the push rod frame is kept in line with the length direction of the slide bar. Consistent, and push the push rod frame down to slide with the slide bar, when it slides to the bottom, the slide bar slides down relative to the slide bar frame, and in the process of sliding, under the action of the front and rear two four-bar linkages , so that the front lower bracket and the rear lower bracket are tilted up and close to the front upper bracket and the rear upper bracket respectively, and the front upper bracket and the rear upper bracket are respectively moved closer to the slide bar frame, and the cart frame is folded and gathered. </b>

Description

a stroller for children

technical field

The invention relates to a stroller for children.

Background technique

The children's stroller in the prior art includes a stroller frame with an unfolded position and a folded position, a front wheel assembly, a left rear wheel assembly, and a right rear wheel assembly for locking the stroller frame in the unfolded position The lower locking mechanism and the seat arranged on the cart frame. There are many types of existing trolley frames, the number of rods of the cart frame is different, and the connection relationship and connection position between the rods are different, so the folding principles and folding methods are different.

Contents of the invention

The technical problem to be solved by the present invention is to provide a stroller for children.

In order to solve the above technical problems, a technical solution adopted by the present invention is: a children's stroller, including a stroller frame with an unfolded position and a folded position, a front wheel assembly, a rear wheel assembly, The trolley frame is locked by the locking mechanism under the unfolded position, and the seat provided on the trolley frame. The trolley frame includes side brackets located on the left and right sides, and the said trolley frame connected to the two sides. The connecting frame between the side brackets, said cart frame on each side comprising:

a slide bar frame, the length of the slide bar frame extends along the up and down direction;

The front upper bracket, the front upper bracket is located on the front side of the slider frame;

The rear upper bracket, the rear upper bracket is located at the rear side of the slider frame, the upper part of the front upper bracket, the upper part of the slider bracket, and the upper part of the rear upper bracket are three parts Two of the parts are connected in rotation, and the third part is connected in rotation with one of the aforementioned two parts;

The front lower bracket, the upper part of the front lower bracket is connected with the lower part of the front upper bracket to rotate around the front two axes;

The rear lower bracket, the upper part of the rear lower bracket is connected to the lower part of the rear upper bracket by rotation around the rear two axes;

A front seat post frame, the front seat post frame is connected to the front upper bracket in rotation around the first three axes, and the first three axes are located above the first two axes;

The rear seat rod frame, the rear seat rod frame and the rear upper bracket are rotatably connected around the rear three axes, and the rear three axes are located above the rear two axes;

Slide bar, described slide bar can be arranged on the described slide bar frame by sliding down along the length direction of the described slide bar frame, the rear part of the described front seat post frame, the described rear seat post The rear part of the frame is rotatably connected to two of the three lower parts of the slide bar, and the third part is rotatably connected to one of the aforementioned two parts;

The push rod frame, the push rod frame and the upper part of the slide bar can be rotated around the seventh axis, and the push rod frame can be slid along the length direction of the slide bar;

The front connecting rod, the upper part of the front connecting rod is connected with the front seatpost frame around the first four axes, the lower part of the front connecting rod is connected with the upper part of the front lower bracket around the first five axes, The front upper bracket, the front lower bracket, the front connecting rod and the front seat post form a four-bar linkage mechanism;

Rear connecting rod, the upper part of the rear connecting rod is connected with the rear seat rod frame around the rear four-axis rotation, and the lower part of the rear connecting rod is connected with the upper part of the rear lower bracket around the rear five-axis rotation , the rear upper bracket, the rear lower bracket, the rear connecting rod and the rear seat post form a four-bar linkage mechanism.

In some embodiments, the locking mechanism is arranged between the lower part of the push rod frame and the upper part of the front upper bracket or between the upper part of the slider frame or with the rear upper The first locking mechanism between the upper part of the bracket, the second locking mechanism between the sliding bar and the sliding bar frame.

In some embodiments, the lower part of the push rod frame is provided with an unlocking drive block for controlling the transition of the second locking mechanism from the locked position to the unlocked position when sliding down to the bottom relative to the slide bar.

In some further embodiments, the unlocking drive block is slidably arranged on the slide bar along the vertical length direction of the slide bar, and the unlocking drive block is connected with the push rod frame The lower part is rotatably connected by the seventh shaft.

In some still further embodiments, the slide bar frame and the slide bar are pipe fittings respectively, the slide bar frame is sheathed on the slide bar, and the unlocking drive block is located on the In the lumen of the sliding rod, the tube body of the sliding rod is provided with a guide groove along its length direction, and the seventh shaft is inserted in the guide groove.

In some yet further embodiments, the second locking mechanism includes a lock tongue slidably disposed on the lower part of the slide bar, a lock hole opened on the slide bar frame, and a lock hole set on the slide bar frame. An elastic member between the lock tongue and the slide bar that allows the lock tongue to be stably inserted into the lock hole, the unlocking drive block and at least one of the two lock tongues A drive slope is provided to make the lock tongue withdraw from the lock hole through mutual conflict.

In some embodiments, the upper part of the front upper bracket is rotatably connected with the upper part of the slider bracket around the front axis, and the upper part of the rear upper bracket is rotated with the upper part of the slider bracket around the rear A shaft is connected in rotation, and the front shaft and the rear shaft are respectively located at the front and rear sides of the slide bar.

In some embodiments, the rear part of the front seat post frame is connected with the lower part of the slide bar to rotate around the front six axes, and the front part of the rear seat post frame is connected to the lower part of the slide bar around the front six axes. The rear six shafts are rotationally connected, and the front six shafts are located in front of the rear six shafts.

In some further embodiments, the front four-axis is located between the front three-axis and the first six-axis, and the rear four-axis is located between the rear three-axis and the rear six-axis between the axes.

In some embodiments, the front wheel assembly is arranged at the lower part of the front lower frame, and the rear wheel assembly is arranged at the lower part of the rear lower frame.

The orientation words such as up, down, front and back mentioned above are defined when the cart frame is in the unfolded position.

The scope of the present invention is not limited to technical solutions formed by a specific combination of the above technical features, but also covers other technical solutions formed by any combination of the above technical features or equivalent features. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Due to the application of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art: when the cart frame is used in the unfolded position, the push rod frame is inclined to the rear side of the cart frame, and it is necessary to move the cart frame When folding, turn the push rod frame so that its length direction is consistent with the length direction of the slide bar, and push down the push rod frame to slide with the slide bar. When sliding to the bottom, the slide bar slides downward relative to the slide bar frame. And in the process of sliding, under the action of the front and rear two four-bar linkages, the front lower bracket and the rear lower bracket are respectively tilted up and close to the front upper bracket and the rear upper bracket, and the front upper bracket and the rear upper bracket are connected to each other. The brackets move closer to the slide bar frame respectively, and the cart frame is folded and folded.

Description of drawings

Accompanying drawing 1 is the three-dimensional view of cart frame under the expanded position;

Accompanying drawing 2 is the side view of the cart frame in the unfolded position;

Accompanying drawing 3 is the state diagram one of cart frame in the folding process;

Accompanying drawing 4 is the state schematic diagram II of cart frame in the folding process;

Accompanying drawing 5 is the state schematic diagram three of cart frame in the folding process;

Accompanying drawing 6 is the three-dimensional schematic view of accompanying drawing 5 state;

Accompanying drawing 7 is the side view of the cart frame in the folded position;

Accompanying drawing 8 is A-A enlarged sectional view of accompanying drawing 1;

Accompanying drawing 9 is the enlarged section view of B-B of accompanying drawing 8;

Among them: 1. Cart frame; 2. Front wheel assembly; 3. Rear wheel assembly; 200, side bracket; 300, connecting frame; 201, slide bar frame; 202, slide bar; 203, push rod frame; 204, Push bar; 205, front upper bracket; 206, front lower bracket; 207, rear upper bracket; 208, rear lower bracket; 209, front seat rod frame; 210, rear seat rod frame; 211, front connecting rod; 212, rear Connecting rod; 213, guide groove;

11. Front one axis; 12. Front two axes; 13. Front three axes; 14. Front four axes; 15. Front five axes; 16. Front six axes; 21. Rear one axis; 22. Rear two axes; 23. Rear three-axis; 24, rear four-axis; 25, rear five-axis; 26, rear six-axis; 37, seventh axis;

401, the unlocking drive block; 402, the lock bolt; 403, the lock hole; 404, the elastic member.

detailed description

As shown in the accompanying drawings, a stroller for children includes a stroller frame 1 with an unfolded position and a folded position, a front wheel assembly 2, and a rear wheel assembly 3 for locking the stroller frame 1 in the unfolded position. The locking mechanism, the seat arranged on the stroller frame 1, the stroller frame 1 includes side brackets 200 located on the left and right sides, and a connecting frame 300 connected between the side brackets 200 on both sides. The connecting frame 300 is a plurality of horizontal connecting rods fixed between the side frames 200 on both sides.

The cart frame 1 on each side consists of:

The slide bar frame 201, the length of the slide bar frame 201 extends along the up and down direction;

The front upper bracket 205, the front upper bracket 205 is located at the front side of the slide bar frame 201;

Back upper bracket 207, rear upper bracket 207 is positioned at the rear side of slide bar frame 201, two parts in the upper part of front upper bracket 205, the top of slide bar frame 201, the upper part of rear upper bracket 207 are rotatably connected, The third part is rotatably connected with one of the aforementioned two parts. In this embodiment, the top of the front upper bracket 205 is rotatably connected with the top of the slide bar frame 201 around the front shaft 11, and the top of the rear upper bracket 207 is connected with the slider. The upper part of the rod frame 201 is rotatably connected around the rear shaft 21, and the front shaft 11 and the rear shaft 21 are respectively located on the front and rear sides of the slide bar 202;

Front lower bracket 206, the top of front lower bracket 206 is connected with the bottom of front upper bracket 205 around the front two shafts 12;

Rear lower bracket 208, the top of rear lower bracket 208 is connected with the bottom of rear upper bracket 207 around the rear two shafts 22;

Front seat post frame 209, front seat post frame 209 and front upper bracket 205 are rotatably connected around the front three shafts 13, and the front three shafts 13 are located above the front two shafts 12;

Rear seat rod frame 210, the rear seat rod frame 210 and the rear upper bracket 207 are rotatably connected around the rear three-axis 23, and the rear three-axis 23 is located above the rear two-axis 22;

Slide bar 202, slide bar 202 can slide down along the length direction of slide bar frame 201 and be arranged on slide bar frame 201, the rear portion of front seat post frame 209, the rear portion of rear seat post frame 210 and slide bar 202 Two of the three lower parts are rotatably connected, and the third part is rotatably connected to one of the aforementioned two parts;

The push rod frame 203, the upper part of the push rod frame 203 and the slide bar 202 can be rotated around the seventh axis 37, and the push rod frame 203 can be slidably set along the length direction of the slide bar 202;

Front connecting rod 211, the top of front connecting rod 211 is rotatably connected with front seat post frame 209 around front four-axis 14, and the bottom of front connecting rod 211 is rotatably connected with the top of front lower bracket 206 around front five-axis 15, front upper bracket 205, The front lower bracket 206, the front connecting rod 211 and the front seat post frame 209 form a four-bar linkage mechanism;

Rear connecting rod 212, the top of rear connecting rod 212 is rotatably connected with rear seat bar frame 210 around rear four-axis 24, the bottom of rear connecting rod 212 is rotatably connected with the top of rear lower bracket 208 around rear five-axis 25, and rear upper bracket 207 , the rear lower bracket 208, the rear connecting rod 212 and the rear seat rod frame 210 constitute a four-bar linkage mechanism.

The rear part of the front seat post frame 209 is connected with the bottom of the slide bar 202 around the front six shafts 16. The front part of the rear seat post frame 210 is connected with the bottom of the slide bar 202 around the rear six shafts 26. The front six shafts 16 are located at the rear six shafts. in front of the shaft 26. The front four-axis 14 is located between the front three-axis 13 and the front six-axis 16 , and the rear four-axis 24 is located between the rear three-axis 23 and the rear six-axis 26 .

The front wheel assembly 2 is arranged on the lower part of the front lower bracket 206 , and the rear wheel assembly 3 is arranged on the lower part of the rear lower bracket 208 .

When the push rod frame 203 is rotated so that its length direction is consistent with the length direction of the slide bar 202, the push rod frame 203 can be pushed down to slide with the slide bar 202. Now the push rod frame 203, the slide bar 202 and the slide bar frame 201 constitutes a structure similar to a three-section umbrella handle.

The locking mechanism includes a first locking mechanism disposed between the lower part of the push rod frame 203 and the upper part of the sliding rod frame 201 , and a second locking mechanism between the sliding rod 202 and the sliding rod frame 201 . The specific structure of the first locking mechanism is not the gist of the present invention, as long as it can lock between the two parts, so that the bottom of the push rod frame 203 cannot rotate around the seventh axis 37, the knot can be applicable here, such as a spring pin 1. The cooperative locking between the lock holes, such as the cooperative locking between the lock hook and the lock pin.

The second locking mechanism is a locking structure for locking the sliding bar 202 and the sliding bar frame 201 , generally any structure capable of locking the two sliding parts can be used here.

However, the bottom of the push rod frame 203 has an unlocking drive block 401 for controlling the second locking mechanism from the locked position to the unlocked position when sliding down to the bottom relative to the slide bar 202. , as long as the first locking mechanism is unlocked, the second locking mechanism will be automatically unlocked during the folding process. The unlocking drive block 401 is slidably arranged on the slide bar 202 along the vertical length direction of the slide bar 202 , and the unlocking drive block 401 is rotationally connected with the lower part of the push rod frame 203 through the seventh shaft 37 . The slide bar frame 201 and the slide bar 202 are pipe fittings respectively, the slide bar frame 201 is sleeved on the slide bar 202, the unlocking drive block 401 is located in the lumen of the slide bar, and the tube body of the slide bar 202 is set on a guide along its length direction. Slot 213 , the seventh shaft 37 is inserted in the guide slot 213 .

In this embodiment, the second locking mechanism includes a lock tongue 402 slidably arranged at the lower part of the slide bar 202 , a lock hole 403 opened on the slide bar frame 201 , and a locking lock arranged between the lock tongue 402 and the slide bar 202 . The tongue 402 is stably inserted into the elastic member 404 in the lock hole 403 , and at least one of the unlocking drive block 401 and the lock tongue 402 is provided with a drive slope that makes the lock tongue 402 withdraw from the lock hole 403 by mutual conflict.

As mentioned above, we have fully described according to the purpose of the present invention, but the present invention is not limited to the above-mentioned embodiments and implementation methods. Practitioners in the relevant technical fields may make various changes and implementations within the scope permitted by the technical ideas of the present invention.

Claims (10)

1. A children's stroller, comprising a stroller frame (1) with an unfolded position and a folded position, a front wheel assembly (2), a rear wheel assembly (3), and a pushchair frame (1) for ) locked in the locking mechanism under the unfolded position, the seat provided on the cart frame (1), the cart frame (1) includes side brackets (200) on the left and right sides, connecting The connecting frame (300) between the side brackets (200) on both sides is characterized in that: Said cart frame (1) on each side comprises: A slide bar frame (201), the length of the slide bar frame (201) extends along the up-down direction; The front upper bracket (205), the front upper bracket (205) is located at the front side of the slider frame (201); Back upper support (207), described rear upper support (207) is positioned at the rear side of described slide bar frame (201), the top of described front upper support (205), described slide bar frame (201 ) and two parts in the upper three parts of the rear upper bracket (207) are rotatably connected, and the third part is rotatably connected with one of the aforementioned two parts; The front lower bracket (206), the upper part of the front lower bracket (206) and the lower part of the front upper bracket (205) are rotatably connected around the front two shafts (12); The rear lower bracket (208), the upper part of the rear lower bracket (208) is rotatably connected with the lower part of the rear upper bracket (207) around the rear two shafts (22); The front seat post frame (209), the front seat post frame (209) is connected with the front upper bracket (205) around the front three shafts (13), and the front three shafts (13) are located at the front The top of the two shafts (12); Rear seat rod frame (210), described rear seat rod frame (210) and described rear upper bracket (207) are rotated and connected around the rear three-axis (23), and described rear three-axis (23) is located at the Above the rear two axles (22); Slide bar (202), described slide bar (202) can slide down along the length direction of described slide bar frame (201) and be arranged on the described slide bar frame (201), described front seat The rear portion of the rod frame (209), the rear portion of the rear seat rod frame (210) are rotationally connected with two of the three lower parts of the slide bar (202), and the third part is connected with the aforementioned One of the two parts is rotationally connected; The push rod frame (203), the upper part of the push rod frame (203) and the slide bar (202) can be rotated around the seventh axis (37), and the push rod frame (203) can be arranged along the Slidingly set along the length direction of the slide bar (202); Front connecting rod (211), the top of described front connecting rod (211) is connected with the described front seat post frame (209) around front four-axis (14) rotation, the bottom of described front connecting rod (211) is connected with The upper part of the front lower bracket (206) is rotatably connected around the front five shafts (15), the front upper bracket (205), the front lower bracket (206), the front connecting rod (211) Constitute a four-bar linkage with the described front seat post frame (209); Rear connecting rod (212), the upper part of the described rear connecting rod (212) is connected with the described rear seat post frame (210) around the rear four-axis (24), and the lower part of the described rear connecting rod (212) The upper part of the rear lower bracket (208) is rotated around the rear five-axis (25), and the rear upper bracket (207), the rear lower bracket (208), and the rear connecting rod (212 ) constitutes a four-bar linkage with the described rear seat rod frame (210). 2. A stroller for children according to claim 1, characterized in that: said locking mechanism comprises a lower part of said push rod frame (203) and an upper part of said front upper bracket (205) The first locking mechanism between the upper part of the slider frame (201) or the upper part of the rear upper bracket (207), is arranged between the slider (202) and the slider Secondary locking mechanism between rod holders (201). 3. A child stroller according to claim 2, characterized in that: the lower part of the push rod frame (203) has a device for controlling the push rod when sliding down to the bottom relative to the slide rod (202). The second locking mechanism is an unlocking drive block (401) that switches from a locked position to an unlocked position. 4. A stroller for children according to claim 3, characterized in that: said unlocking drive block (401) is slidably arranged on said slide bar (202) along the up and down length direction of said slide bar (202). On the rod (202), the unlocking drive block (401) is rotationally connected with the lower part of the push rod frame (203) through the seventh shaft (37). 5. A children's stroller according to claim 4, characterized in that: said slide bar frame (201) and said slide bar (202) are pipe fittings respectively, and said slide bar frame (201) Sleeved on the sliding rod (202), the unlocking drive block (401) is located in the lumen of the sliding rod, and the tube body of the sliding rod (202) is provided along its length direction There is a guide groove (213), and the seventh shaft (37) is inserted in the guide groove (213). 6. A stroller for children according to claim 3, characterized in that: said second locking mechanism comprises a lock tongue (402) slidably arranged at the lower part of said slide bar (202), and The lock hole (403) on the slide bar frame (201) is set between the lock tongue (402) and the slide bar (202) so that the lock tongue (402) can be inserted stably. In the elastic member (404) in the lock hole (403), at least one of the unlocking drive block (401) and the lock tongue (402) is provided with a structure that makes the lock tongue (402) A drive ramp withdrawn from the lock hole (403). 7. A stroller for children according to claim 1, characterized in that: the upper part of the front upper bracket (205) and the upper part of the slider frame (201) rotate around the front axis (11) connection, the upper part of the rear upper bracket (207) is connected with the upper part of the slider frame (201) around the rear shaft (21), and the front shaft (11) is connected with the rear shaft (11). The shafts (21) are respectively located on the front and rear sides of the slide bar (202). 8. A stroller for children according to claim 1, characterized in that: the rear part of the front seat post frame (209) and the lower part of the slide bar (202) rotate around the front six axes (16) connected, the front part of the rear seat rod frame (210) is connected with the lower part of the slide bar (202) around the rear six shafts (26), and the front six shafts (16) are located at the rear The front of the six axles (26). 9. A stroller for children according to claim 8, characterized in that: said front four shafts (14) are located between said front three shafts (13) and said front six shafts (16) , said rear four-axle (24) is located between said rear three-axle (23) and said rear six-axle (26). 10. A stroller for children according to claim 1, characterized in that: the front wheel assembly (2) is arranged at the lower part of the front lower bracket (206), and the rear wheel assembly (3 ) is arranged on the bottom of the rear lower bracket (208).