Baby carriage with seat convenient to fold

Abstract

The utility model provides a baby carriage with a seat convenient to fold, which comprises a carriage frame and the seat arranged on the carriage frame, the carriage frame comprises a front wheel support and a hand push rod support which is rotatably folded relative to the front wheel support, and the seat comprises a seat backrest, a seat sitting part and a seat joint which enables the seat backrest and the seat sitting part to be mutually rotatably folded; the seat joint comprises a joint inner disc, a joint middle disc, a joint outer disc and a locking assembly, the joint middle disc and the joint outer disc are hinged to the joint inner disc in a pivot mode, the locking assembly is arranged between the joint middle disc and the joint outer disc, and the joint outer disc is fixed to the hand push rod support. The joint middle disc and the joint inner disc are respectively fixed on the seat backrest and the seat sitting part which correspond to each other; the hand push rod support drives the joint outer disc to drive the locking assembly to unlock in the process of rotating and folding towards the front face of the front wheel support, and the joint outer disc drives the joint middle disc to rotate relative to the joint inner disc after rotating by a certain angle.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of folding baby carriage, especially relates to a baby carriage with folding seat. BACKGROUND

[0002] Baby carriage is the "transportation tool" of baby, needs the person to assist to push or pull the car that can walk, is the necessary transportation tool of assisting parents to carry baby to go out, take a walk. With the development of baby carriage, its portable performance is valued by parents. Because the baby carriage is large in size when unfolded, the folding seat and the foldable frame are usually set to fold the baby carriage for convenient carrying, transportation or storage. Therefore, the folding mode and folding operation of the baby carriage are one of the selling points that attract consumers. However, in the prior art, the foldable frame and the foldable seat of the baby carriage are divided into two steps, and the operation needs to be performed in sequence during the folding process. In addition, both hands need to be used for operation, which is relatively complex and inconvenient to use. It is not suitable for the user to hold the baby and fold at the same time, which reduces the user experience. SUMMARY

[0003] The main purpose of the utility model is to provide a baby carriage with a folding seat, wherein the seat joint comprises: a joint inner disc, a joint middle disc and a joint outer disc which are pivotally connected to the joint inner disc, and a locking assembly arranged between the joint middle disc and the joint outer disc, the joint outer disc is fixed to the handrail support, and the joint middle disc and the joint inner disc are respectively fixed to the corresponding seat back and seat part; during the folding process, the handrail support rotates towards the front wheel support, driving the joint outer disc to drive the locking assembly to be unlocked, and after the joint outer disc rotates by a certain angle, the joint middle disc rotates relative to the joint inner disc, so that the seat back and the seat part can be folded by rotating relative to each other; by adopting the above scheme, the handrail support drives the joint outer disc to rotate relative to the joint inner disc, and the joint middle disc is folded, so that during the folding process of the handrail support relative to the front wheel support, the frame folding can also drive the seat folding, so that the user can complete the folding of the baby carriage with one hand, the folding operation of the baby carriage is relatively simple, the portability is improved, it is suitable for the user to hold the baby and fold at the same time, the user experience is improved, and the shortcomings of the traditional folding baby carriage, which needs two steps for folding and is relatively complex to operate, are overcome.

[0004] In order to solve the above technical problems, the utility model provides the following technical scheme:

[0005] A stroller with a folding seat, comprising: a frame, and a seat arranged on the frame, the frame comprising: a front wheel support, and a handle support foldable relative to the front wheel support, the seat comprising: a seat back, a seat bottom, and a seat joint enabling the seat back and the seat bottom to fold relative to each other, wherein the seat joint comprises: an inner joint disc, a middle joint disc pivotally connected to the inner joint disc, an outer joint disc pivotally connected to the middle joint disc, and a locking assembly arranged between the middle joint disc and the outer joint disc, the outer joint disc being fixed to the handle support, the middle joint disc and the inner joint disc being fixed to the seat back and the seat bottom respectively, in a folding process, the handle support is folded towards the front wheel support, the outer joint disc drives the locking assembly to be unlocked, and the outer joint disc rotates by a certain angle to drive the middle joint disc to rotate relative to the inner joint disc, so that the seat back and the seat bottom can fold relative to each other.

[0006] As a preferred solution of the stroller with a folding seat, the locking assembly comprises: a locking pin, a locking gear, a first return spring, and an abutting pressure rod, the locking gear is clamped between the middle joint disc and the outer joint disc, the middle joint disc and the outer joint disc are provided with gear grooves at positions corresponding to the locking gear, the gear grooves can engage with the locking gear, the first return spring is clamped between the middle joint disc and one side of the locking gear, the abutting pressure rod abuts the other side of the locking gear, and the locking pin is arranged in the outer joint disc and extends towards the front wheel support, in a locking state, the first return spring abuts the locking gear, the locking gear is clamped with the gear grooves of the middle joint disc and the outer joint disc, the other side of the locking gear abuts the abutting pressure rod, and the abutting pressure rod abuts the locking pin, in an unlocking state, the locking pin is driven to abut the abutting pressure rod, the abutting pressure rod abuts the locking gear to drive the locking gear into the gear groove of the middle joint disc, and the first return spring is compressed.

[0007] As a preferred solution of the stroller with a folding seat, the outer joint disc is provided with an abutting protrusion, the middle joint disc is provided with an arc-shaped guide groove, and the abutting protrusion can slide into the arc-shaped guide groove and abut the arc-shaped guide groove, when the abutting protrusion slides in the arc-shaped guide groove, the outer joint disc rotates relative to the middle joint disc, and when the abutting protrusion abuts the arc-shaped guide groove, the outer joint disc can drive the middle joint disc to rotate.

[0008] As a preferred solution of the stroller with the folding seat, the locking assembly further comprises a second reset spring; the outer joint disc is provided with a locking pin hole, and an abutting plate is arranged in the locking pin hole; the locking pin is provided with a guide groove; the abutting plate can extend into the guide groove to guide the movement of the locking pin; and the second reset spring is clamped between the abutting plate and the locking pin to reset the locking pin.

[0009] As a preferred solution of the stroller with the folding seat, the front wheel support is provided with an arc-shaped driving groove at a position corresponding to the locking pin; the groove depth of the arc-shaped driving groove decreases in the direction of rotation of the outer joint disc; and the arc-shaped driving groove drives the locking pin towards the abutting pressure rod during the sliding of the locking pin relative to the arc-shaped driving groove in the direction of decreasing depth.

[0010] As a preferred solution of the stroller with the folding seat, the outer joint disc extends towards the inner joint disc to form a hinged rotating shaft; the hinged rotating shaft extends through the locking gear, the middle joint disc and then into the inner joint disc to be pivotally hinged; the hinged rotating shaft is provided with a locking pin accommodating groove; a pressure rod guide groove is arranged in the direction of the locking pin accommodating groove; the abutting pressure rod extends through the pressure rod guide groove and can move in the direction of the pressure rod guide groove; and the end of the locking pin close to the outer joint disc can extend into the locking pin accommodating groove to abut against the abutting pressure rod.

[0011] As a preferred solution of the stroller with the folding seat, the locking assembly further comprises a driving pin block; the driving pin block is sleeved on the hinged rotating shaft and clamped between the locking gear and the outer joint disc; the locking gear is provided with a pin block accommodating groove; the groove bottom of the pin block accommodating groove is provided with a guide inclined block; the side of the driving pin block close to the pin block accommodating groove is provided with a guide inclined groove; after the driving pin block is accommodated in the pin block accommodating groove, the guide inclined block is embedded in the guide inclined groove; in the locked state, the first reset spring abuts against the locking gear to tightly press the locking gear against the driving pin block; in the unlocked state, the driving pin block is driven to rotate in the direction of rotation of the outer joint disc; the guide inclined groove guides the guide inclined block, so that the locking gear compresses the first reset spring and then completely extends into the gear groove of the middle joint disc.

[0012] As a preferred solution of the stroller with the folding seat, the locking assembly further comprises a driving plate and a driving cable, a slot wall of the pin block accommodating slot is provided with a cable through slot, the driving plate is installed on the seat back, the driving cable is arranged in the seat back, one end of the driving cable is installed on the driving pin block after passing through the cable through slot, the other end of the driving cable is installed on the driving plate, and the driving plate drives the driving cable to drive the driving pin block to rotate in the direction of the joint outer disc.

[0013] As a preferred solution of the stroller with the folding seat, the inner side of the driving pin block is provided with a limiting protrusion, an inner slot wall of the pin block accommodating slot is provided with a limiting recess, the limiting protrusion extends into the limiting recess and can slide in the limiting recess, and the limiting recess is used for limiting the rotation angle of the driving pin block.

[0014] As a preferred solution of the stroller with the folding seat, the stroller with the folding seat further comprises a rear wheel support rotatably installed on the front wheel support, the rear wheel support comprises a hand pushing rod, and the hand pushing rod support comprises a linkage support, one end of the linkage support is rotatably installed in the hand pushing rod support, the other end of the linkage support extends into the rear wheel support, the other end of the linkage support is provided with a guide linkage through slot, the rear wheel support is provided with a guide linkage rod at a position corresponding to the guide linkage through slot, the guide linkage rod can slide in the guide linkage through slot after extending into the guide linkage through slot, in the folding process, the hand pushing rod support links the rear wheel support through the linkage support, the rear wheel support is rotated and folded from the back of the front wheel support to the front wheel support, the hand pushing rod support and the rear wheel support further approach the front wheel support to be folded by relying on gravity through upward lifting of the hand pushing rod.

[0015] The utility model discloses the beneficial effect is:

[0016] In the utility model, a stroller with a folding seat is provided, comprising: a frame, and a seat arranged on the frame, the frame comprising: a front wheel support, and a handrail support pivotally folded relative to the front wheel support, the seat comprising: a seat back, a seat bottom, and a seat joint enabling the seat back and the seat bottom to be pivotally folded relative to each other; wherein the seat joint comprises: an inner joint disc, an intermediate joint disc pivotally connected to the inner joint disc, and an outer joint disc, and a locking assembly arranged between the intermediate joint disc and the outer joint disc, the outer joint disc is fixed to the handrail support, the intermediate joint disc and the inner joint disc are respectively fixed to the corresponding seat back and seat bottom; in the folding process, the handrail support is folded towards the front face of the front wheel support, driving the outer joint disc to drive the locking assembly to be unlocked, the outer joint disc is rotated by a certain angle, driving the intermediate joint disc to rotate relative to the inner joint disc, so that the seat back and the seat bottom can be pivotally folded relative to each other; by the above scheme, the handrail support drives the outer joint disc to drive the intermediate joint disc to rotate and fold relative to the inner joint disc, so that in the folding process of the handrail support relative to the front wheel support, the frame can also drive the seat to fold, so that the user can complete the folding of the stroller with one hand, the folding operation of the stroller is relatively simple, the portability is improved, and the stroller is suitable for being folded by the user while holding the baby, improving the use experience of the user, overcoming the defects that the traditional folding stroller needs two steps to fold and the operation is relatively complex. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating labor, and all belong to the protection range of the utility model, wherein:

[0018] Figure 1 It is the structure schematic view of the stroller with a folding seat shown in the utility model;

[0019] Figure 2 It is Figure 1 It is the structure schematic view of the alternative embodiment of the stroller with a folding seat shown in the utility model;

[0020] Figure 3 It is Figure 1 It is the partial enlarged view of the sectional view of the seat joint of the stroller with a folding seat shown in the utility model;

[0021] Figure 4 It is Figure 1 It is the structure schematic view of the seat of the stroller with a folding seat shown in the utility model;

[0022] Figure 5 It isFigure 4 EXPLoded view of the seat joint and locking assembly of the stroller with easy folding seat shown;

[0023] Figure 6 is Figure 5 EXPLoded view of the locking pin of the stroller with easy folding seat shown;

[0024] Figure 7 is Figure 5 EXPLoded view of one angle of the outer joint disc of the stroller with easy folding seat shown;

[0025] Figure 8 is Figure 7 EXPLoded view of another angle of the outer joint disc of the stroller with easy folding seat shown;

[0026] Figure 9 is Figure 5 EXPLoded view of the drive pin block of the stroller with easy folding seat shown;

[0027] Figure 10 is Figure 5 EXPLoded view of the locking gear of the stroller with easy folding seat shown.

[0028] Figure 11 is Figure 5 EXPLoded view of the seat back, seat bottom, middle joint disc and inner joint disc of the stroller with easy folding seat shown;

[0029] Figure 12 is Figure 1 EXPLoded view of the seat back, seat bottom, middle joint disc and inner joint disc of the stroller with easy folding seat shown;

[0030] Figure 13 is Figure 12 EXPLoded view of the seat back, seat bottom, middle joint disc and inner joint disc of the stroller with easy folding seat shown;

[0031] Figure 14 is EXPLoded view of the stroller with easy folding seat shown in the process of folding;

[0032] Figure 15 EXPLoded view of the stroller with easy folding seat shown after folding is completed. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0034] In the description of the utility model, it also needs to be explained that, unless there is explicit provision and limitation, the terms "arrangement", "installation", "connection", "connection" should be broadly understood, for example, it can be fixed connection, it can also be rotatable connection, or integrally connected, it can be mechanical connection, it can also be electrical connection, it can be directly connected, it can also be indirectly connected through intermediate medium, it can be the communication inside two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] The child car is the "transportation tool" of the baby, and the car that needs to be pushed or pulled by someone can walk. It is the necessary transportation tool for parents to carry babies to go out, walk. With the development of child car, its portability is valued by parents. Because the child car is relatively large in size when unfolded, the folding frame and the folding seat are usually set to fold and fold to facilitate carrying, transportation or storage. Therefore, the folding mode and folding operation of the child car product are also one of the selling points of consumers. However, in the prior art, the foldable frame and the foldable seat of the child car are divided into two steps, and need to be operated in sequence during folding, and also need to be operated with both hands, which is relatively complex and inconvenient to use, not suitable for the user to hold the baby and fold at the same time, reducing the user's experience.

[0036] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the utility model embodiment provides a child car with a folding seat, which comprises a frame 10 and a seat 20 arranged on the frame 10, the frame 10 comprises a front wheel support 11, a hand push rod support 12 and a rear wheel support 13 which are rotatably folded relative to the front wheel support 11, and the seat 20 comprises a seat back 21, a seat part 22 and a seat joint 23 which enables the seat back 21 and the seat part 22 to be rotatably folded relative to each other.

[0037] The seat joint 23 comprises an intra-joint disc 231, an inter-joint disc 232 and an extra-joint disc 233 which are pivotally connected with each other, and a locking assembly 234 arranged between the inter-joint disc 232 and the extra-joint disc 233, the extra-joint disc 233 is fixed to the handle bar support 12, the inter-joint disc 232 and the intra-joint disc 231 are respectively fixed to the seat back 21 and the seat bottom 22.

[0038] During the folding process, the handle bar support 12 rotates towards the front wheel support 11, and drives the extra-joint disc 233 to drive the locking assembly 234 to be unlocked, and the extra-joint disc 233 rotates by a certain angle and drives the inter-joint disc 232 to rotate relative to the intra-joint disc 231, so that the seat back 21 and the seat bottom 22 can rotate and fold.

[0039] In the utility model, the opening of the seat 20 for placing the baby faces forward, the intra-joint disc 231 is installed on the seat bottom 22, the inter-joint disc 232 is installed on the back of the seat 20, and the folding of the frame 10 can drive the folding of the frame 10; in alternative embodiments of the utility model, the opening of the seat 20 for placing the baby faces the user, the intra-joint disc 231 is installed on the seat back 21, the inter-joint disc 232 is installed on the seat bottom 22, and the folding of the frame 10 can also drive the folding of the frame 10, which is not limited in the utility model; since the structures of the parts used in the opening of the seat 20 for placing the baby faces forward and the opening of the seat 20 for placing the baby faces the user are the same, the opening of the seat 20 for placing the baby faces forward is taken as an example in the following description.

[0040] In the utility model, the above scheme is adopted, the handle bar support 12 drives the extra-joint disc 233 to drive the inter-joint disc 232 to rotate relative to the intra-joint disc 231 to fold, so that during the folding process of the handle bar support 12 relative to the front wheel support 11, the folding of the frame 10 can also drive the folding of the seat 20, so that the user can complete the folding of the baby carriage with one hand, the folding operation of the baby carriage is relatively simple, the portability is improved, the user can fold the baby carriage while holding the baby, the use experience of the user is improved, and the shortcomings that the folding of the traditional folding baby carriage needs two steps and the operation is relatively complex are overcome.

[0041] As Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 ,Figure 12 , Figure 13 , Figure 14 and Figure 15 As shown, in order to assemble the locking assembly 234, the locking assembly 234 includes: a locking pin 2341, a locking gear 2342, a first return spring 2343, and an abutment rod 2344;

[0042] The locking gear 2342 is sandwiched between the joint middle plate 232 and the joint outer plate 233. The joint middle plate 232 and the joint outer plate 233 are provided with gear grooves 2321 and 2331 at positions corresponding to the locking gear 2342. The gear grooves 2321 and 2331 can mesh with the locking gear 2342.

[0043] The first return spring 2343 is clamped between one side of the joint middle plate 232 and the locking gear 2342, the abutting rod 2344 abuts against the other side of the locking gear 2342, and the locking pin 2341 is located in the joint outer plate 233 and extends toward the front wheel bracket 11;

[0044] In the locked state, the first return spring 2343 abuts against the locking gear 2342, so that the locking gear 2342 is engaged with the gear grooves 2321 and 2331 of the joint middle plate 232 and the joint outer plate 233. The other side of the locking gear 2342 abuts against the abutting rod 2344, and the abutting rod 2344 abuts against the locking pin 2341.

[0045] In the unlocked state, the locking pin 2341 is driven to abut against the abutting rod 2344, and the abutting rod 2344 abuts against the locking gear 2342, driving the locking gear 2342 fully into the gear groove 2321 of the joint disc 232, and the first return spring 2343 is compressed.

[0046] In order for the outer joint disc 233 to drive the middle joint disc 232 to rotate, the outer joint disc 233 is provided with an abutting protrusion 2332, and the middle joint disc 232 is provided with an arc-shaped guide groove 2322. The abutting protrusion 2332 can slide into the arc-shaped guide groove 2322 and abut against the arc-shaped guide groove 2322. When the abutting protrusion 2332 slides in the arc-shaped guide groove 2322, the outer joint disc 233 rotates freely relative to the middle joint disc 232. When the abutting protrusion 2332 abuts against the arc-shaped guide groove 2322, the outer joint disc 233 can drive the middle joint disc 232 to rotate.

[0047] In order to facilitate the reset of the locking pin 2341, the locking assembly 234 further comprises a second reset spring 2345; the outer joint disc 233 is provided with a locking pin hole 2333, and the locking pin hole 2333 is provided with an abutting plate 2334; the locking pin 2341 is provided with a guide groove 23411, and the abutting plate 2334 can extend into the guide groove 23411 to guide the movement of the locking pin 2341; and the second reset spring 2345 is clamped between the abutting plate 2334 and the locking pin 2341 to reset the locking pin 2341.

[0048] In order to drive the extension and retraction of the locking pin 2341, the front wheel support 11 is provided with an arc-shaped driving groove 111 at a position corresponding to the locking pin 2341, and the groove depth of the arc-shaped driving groove 111 decreases in the direction of rotation of the outer joint disc 233; during the sliding of the locking pin 2341 relative to the arc-shaped driving groove 111 in the direction in which the depth decreases, the arc-shaped driving groove 111 drives the locking pin 2341 towards the abutting pressure rod 2344.

[0049] In order to limit the rotation of the abutting pressure rod 2344, the outer joint disc 233 extends towards the joint disc 232 to form a hinged pivot shaft 2335, the hinged pivot shaft 2335 extends through the locking gear 2342, the joint disc 232 and then extends into the inner joint disc 231 to be pivotally hinged; the hinged pivot shaft 2335 is provided with a locking pin accommodating groove 23351, and a pressure rod guide groove 23352 is arranged in the direction of the locking pin accommodating groove 23351; the abutting pressure rod 2344 extends through the pressure rod guide groove 23352 and can move in the direction of the pressure rod guide groove 23352, thereby avoiding the rotation of the abutting pressure rod 2344 relative to the locking gear 2342; and one end of the locking pin 2341 close to the outer joint disc 233 can extend into the locking pin accommodating groove 23351 to abut against the abutting pressure rod 2344.

[0050] In order to be able to fold the seat 20 individually, the locking assembly 234 further comprises a driving pin block 2346, which is sleeved on the hinged pivot shaft 2335 and clamped between the locking gear 2342 and the outer joint disc 233.

[0051] The locking gear 2342 is provided with a pin block accommodating groove 23421, and the groove bottom of the pin block accommodating groove 23421 is provided with a guide inclined block 23422; one side of the driving pin block 2346 close to the pin block accommodating groove 23421 is provided with a guide inclined groove 23461; after the driving pin block 2346 is accommodated in the pin block accommodating groove 23421, the guide inclined block 23422 is embedded in the guide inclined groove 23461.

[0052] In the locked state, the first return spring 2343 abuts against the locking gear 2342, and the locking gear 2342 abuts against the driving pin block 2346;

[0053] In the unlocked state, the driving pin block 2346 is driven to rotate in the direction of rotating the joint outer disc 233, the guide inclined groove 23461 guides the guide inclined block 23422, so that the locking gear 2342 is fully inserted into the gear groove 2321 of the joint inner disc 232 after compressing the first return spring 2343;

[0054] Therefore, driving the driving pin block 2346 alone can also complete the locking and unlocking of the seat 20, so that the folding and unfolding effects of the seat 20 can be achieved.

[0055] In order to drive the driving pin block 2346, the locking assembly 234 further comprises a driving plate 2347 and a driving cable 2348, the groove wall of the pin block containing groove 23421 is provided with a cable passing groove 23423; the driving plate 2347 is installed on the seat back 21, the driving cable 2348 is arranged in the seat back 21, one end of the driving cable 2348 passes through the cable passing groove 23423 and is installed on the driving pin block 2346, the other end of the driving cable 2348 is installed on the driving plate 2347, the driving plate 2347 drives the driving cable 2348 to drive the driving pin block 2346 to rotate in the direction of rotating the joint outer disc 233.

[0056] In order to limit the rotation angle of the driving pin block 2346, the inner side of the driving pin block 2346 is provided with a limiting protrusion 23462, the inner groove wall of the pin block containing groove 23421 is provided with a limiting groove 23424, the limiting protrusion 23462 extends into the limiting groove 23424 and can slide in the limiting groove 23424, and the limiting groove 23424 is used to limit the rotation angle of the driving pin block 2346.

[0057] In order to make the seat 20 detachable, the joint outer disc 233 comprises an outer disc body 2336 and an outer disc base 2337; the outer disc body 2336 is provided with a plug-in groove 23361, the outer disc base 23371 is provided with a plug-in protrusion 23371, the plug-in protrusion 23371 is detachably plugged into the plug-in groove 23361, so that the seat 20 is detachable relative to the vehicle frame 10.

[0058] In order to install the rear wheel support 13, the rear wheel support 13 is rotatably installed on the front wheel support 11, and the rear wheel support 13 comprises a hand-held rod 131;

[0059] The hand pushing rod support 12 comprises a linkage support 121, one end of which is rotatably installed in the hand pushing rod support 12, and the other end of which extends into the rear wheel support 13;

[0060] The other end of the linkage support 121 is provided with a guiding linkage through slot 1211, and the rear wheel support 13 is provided with a guiding linkage rod 132 at a position corresponding to the guiding linkage through slot 1211, which extends into the guiding linkage through slot 1211 and can slide along the guiding linkage through slot 1211;

[0061] In the folding process, the hand pushing rod support 12 is linked with the rear wheel support 13 by the linkage support 121, and is folded by rotating from the back of the front wheel support 11 towards the front wheel support 11, and by lifting the hand pushing rod 131 upwards, the hand pushing rod support 12 and the rear wheel support 13 will further fold towards the two sides of the front wheel support 11 by gravity.

[0062] The utility model has been described in detail above in combination with the drawings, but the utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and still fall within the protection scope of the utility model.

Claims

1. A stroller with a conveniently foldable seat, characterized in that, include: A frame and a seat mounted on the frame, the frame including: a front wheel bracket and a push rod bracket that rotates and folds relative to the front wheel bracket, the seat including: a seat back, a seat part, and a seat joint that allows the seat back and the seat part to rotate and fold relative to each other; The seat joint includes: an inner joint disc, a middle joint disc and an outer joint disc pivotally hinged to the inner joint disc, and a locking assembly disposed between the middle joint disc and the outer joint disc. The outer joint disc is fixed to the push rod bracket, and the middle joint disc and the inner joint disc are respectively fixed to the corresponding seat back and the seat. During the folding process, the push rod bracket rotates towards the front of the front wheel bracket, driving the outer joint disc to unlock the locking component. After the outer joint disc rotates at a certain angle, it drives the middle joint disc to rotate relative to the inner joint disc, thereby enabling the seat back and the seat to rotate and fold relative to each other.

2. The stroller with a convenient folding seat as described in claim 1, characterized in that, The locking assembly includes: a locking pin, a locking gear, a first return spring, and an abutment rod; The locking gear is clamped between the joint middle plate and the joint outer plate. Both the joint middle plate and the joint outer plate are provided with gear grooves at positions corresponding to the locking gear, and the gear grooves can mesh with the locking gear. The first return spring is clamped between the joint middle plate and one side of the locking gear, the abutting rod abuts against the other side of the locking gear, and the locking pin is located inside the joint outer plate and extends toward the front wheel bracket; In the locked state, the first return spring abuts against the locking gear, causing the locking gear to engage with the gear grooves of both the joint middle plate and the joint outer plate. The other side of the locking gear abuts against the abutting rod, and the abutting rod abuts against the locking pin. In the unlocked state, the locking pin is driven to abut against the abutting rod, and the abutting rod abuts against the locking gear, driving the locking gear fully into the gear groove of the joint disc, and the first return spring is compressed.

3. The stroller with a convenient folding seat as described in claim 1, characterized in that, The outer joint disc is provided with an abutting protrusion, and the middle joint disc is provided with an arc-shaped guide groove. The abutting protrusion can slide into the arc-shaped guide groove and abut against the arc-shaped guide groove. When the abutting protrusion slides within the arc-shaped guide groove, the outer joint disc rotates relative to the middle joint disc. When the abutting protrusion abuts against the arc-shaped guide groove, the outer joint disc can drive the middle joint disc to rotate.

4. The stroller with a convenient folding seat as described in claim 2, characterized in that, The locking assembly further includes: a second return spring; The outer disc of the joint is provided with a locking pin through hole, and an abutment plate is provided in the locking pin through hole. The locking pin is provided with a guide groove, and the abutment plate can extend into the guide groove to guide the movement of the locking pin. The second return spring is clamped between the abutment plate and the locking pin for the reset of the locking pin.

5. The stroller with a convenient folding seat as described in claim 4, characterized in that, The front wheel bracket has an arc-shaped drive groove at the position corresponding to the locking pin. The depth of the arc-shaped drive groove decreases sequentially along the direction of rotation of the outer disc of the joint. During the sliding process of the locking pin relative to the arc-shaped drive groove in the direction of decreasing depth, the arc-shaped drive groove drives the locking pin toward the abutting pressure rod.

6. The stroller with a convenient folding seat as described in claim 5, characterized in that, The outer joint disc extends toward the middle joint disc to form a hinge shaft, which passes through the locking gear and the middle joint disc in sequence and then extends into the inner joint disc for pivot hinge. The hinge shaft is provided with a locking pin receiving groove, and a pressure rod guide groove is provided along the direction of the locking pin receiving groove. The abutting pressure rod passes through the pressure rod guide groove and can move along the direction of the pressure rod guide groove. The end of the locking pin near the outer disk of the joint can extend into the locking pin receiving groove to abut the abutting pressure rod.

7. The stroller with a convenient folding seat as described in claim 6, characterized in that, The locking assembly further includes a drive pin block, which is sleeved on the hinge shaft and clamped between the locking gear and the joint outer disk; The locking gear is provided with a pin block receiving groove, and a guide inclined block is provided at the bottom of the pin block receiving groove. The driving pin block is provided with a guide inclined groove on the side near the pin block receiving groove. After the driving pin block is received in the pin block receiving groove, the guide inclined block is embedded in the guide inclined groove. In the locked state, the first return spring abuts against the locking gear, pressing the locking gear against the drive pin block; In the unlocked state, the drive pin block is driven to rotate in the direction of rotation of the outer joint disk, and the guide groove guides the guide block, so that the locking gear compresses the first reset spring and fully extends into the gear groove of the middle joint disk.

8. The stroller with a convenient folding seat as described in claim 7, characterized in that, The locking assembly further includes: a drive plate and a drive cable, wherein the groove wall of the pin block receiving groove is provided with a cable through groove; The drive plate is installed on the seat back, the drive cable is located inside the seat back, one end of the drive cable passes through the cable slot and is installed on the drive pin block, and the other end of the drive cable is installed on the drive plate. The drive plate drives the drive cable to drive the drive pin block to rotate in the direction of rotation of the outer disc of the joint.

9. The stroller with a convenient folding seat as described in claim 8, characterized in that, The inner side of the drive pin block is provided with a limiting protrusion, and the inner wall of the pin block receiving groove is provided with a limiting groove. The limiting protrusion extends into the limiting groove and can slide along the limiting groove. The limiting groove is used to limit the rotation angle of the drive pin block.

10. The stroller with a convenient folding seat as described in claim 1, characterized in that, The stroller with the convenient folding seat also includes: a rear wheel bracket rotatably mounted on the front wheel bracket, the rear wheel bracket including: a carrying handle; The push rod bracket includes: a linkage bracket, one end of which is rotatably mounted inside the push rod bracket, and the other end of which extends into the rear wheel bracket; The other end of the linkage bracket is provided with a guide linkage slot, and the rear wheel bracket is provided with a guide linkage rod at the position corresponding to the guide linkage slot. After the guide linkage rod extends into the guide linkage slot, it can slide along the guide linkage slot. During the folding process, the push rod bracket, through the linkage bracket, drives the rear wheel bracket to rotate and fold from the back of the front wheel bracket toward the front wheel bracket. By lifting the handle upwards, the push rod bracket and the rear wheel bracket will fold further toward the front wheel bracket by gravity.

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