CN211417377U - Folding system of foldable trolley for children - Google Patents

Abstract

The utility model relates to a children's handcart technical field, specifically speaking relates to a folding system of folding handcart of children, including the support frame, be equipped with the seat on the support frame, one of them end of support frame is equipped with the push rod, and another end of support frame is equipped with the front wheel, still is equipped with the rear wheel mount on the support frame, still is equipped with the protection fence on the support frame, still is equipped with folding assembly between support frame and the push rod, and folding assembly includes joint and lower joint, goes up to rotate between joint and the lower joint to be connected, is equipped with the first recess that is linked together with the external world in going up the joint, is equipped with joint strutting arrangement in the first recess, still is equipped with grafting fixing device. The utility model discloses conveniently carry out folding operation, labour saving and time saving brings the facility for the user.

Description

Folding system of foldable trolley for children

Technical Field

The utility model relates to a children's handcart technical field, specifically speaking relates to a folding system of folding handcart of children.

Background

The child stroller is a stroller for children to take, at present, many foldable strollers are available in the market, and a corresponding folding system is generally installed on the foldable stroller, but the folding system on the general stroller is inconvenient to operate, and brings certain inconvenience to users.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a folding system of children's folding handcart to it is inconvenient to solve its operation of the folding system on the general shallow that proposes in the above-mentioned background art, when using, brings certain inconvenient problem for the user.

In order to achieve the above object, the utility model provides a following technical scheme:

the folding system of the folding trolley for children comprises a supporting frame, wherein a seat plate is arranged on the supporting frame, a push rod is arranged at one end of the supporting frame, a front wheel is arranged at the other end of the supporting frame, a rear wheel fixing frame is further arranged on the supporting frame, a protection fence is further arranged on the supporting frame, a folding assembly is further arranged between the supporting frame and the push rod, the folding assembly comprises an upper joint and a lower joint, and the upper joint is rotatably connected with the lower joint.

Preferably, a first groove communicated with the outside is formed in the upper joint, clamping grooves communicated with the outside are formed in the groove walls of the left side and the right side of the first groove, sliding grooves are formed in the groove walls of the left side and the right side of the first groove, which are close to the notch of the first groove, fixed blocks are further arranged on the groove walls of the first groove, which are close to the notch of the first groove, second grooves communicated with the first grooves are formed in the fixed blocks, and through holes communicated with the outside are formed in the groove walls of the front side of the second grooves.

Preferably, all be equipped with the lug on going up the left and right sides face of joint, be equipped with the third recess in the lug, there is semicircle cushion through nest nail fixed mounting in the third recess, form a complete through-hole between the cell wall of semicircle cushion and third recess, be equipped with the mounting groove on the lower joint, the fixed block is located in the mounting groove, all be equipped with the shaft hole that is linked together with the external world in the fixed block and the cell wall of mounting groove, rotate through the pivot between the cell wall of fixed block and mounting groove and be connected.

Preferably, be equipped with joint strutting arrangement in the first recess, joint strutting arrangement includes that fixed mounting glues the lid at the button on the first recess cell wall, the top that the lid was glued to the button is equipped with the bedplate locking piece of two mutual symmetries, be equipped with the inclined plane on the bedplate locking piece, the joint end of bedplate locking piece pass the draw-in groove and with the draw-in groove between the joint cooperation, two it has first reset spring, two still to closely weld between the bedplate locking piece the front side of bedplate locking piece still is equipped with the bedplate button, the bedplate button supports on the inclined plane along two plate body ends of button rubber cover length direction, and it is used for supporting on the bedplate button leading flank to carry out spacing self tapping screw to the bedplate button to go back threaded connection on the cell wall that first recess is close to its notch position.

Preferably, the lower joint is further provided with an inserting and fixing device, the inserting and fixing device comprises a lifting ring button arranged in the second groove, the bottom end of the lifting ring button is provided with a wedge block, the lifting ring button is further wound with a second reset spring, one end of the second reset spring is fixedly arranged on the lifting ring button, the other end of the second reset spring is fixedly arranged on the groove wall of the second groove, the front side of the lifting ring button is provided with a telescopic needle, a limit ring is arranged on the telescopic needle, the tail end of the telescopic needle penetrates through the through hole and is positioned in the mounting groove, the limit ring abuts against the front opening of the through hole, the telescopic needle is wound with a third reset spring, one end of the third reset spring is fixedly arranged on the groove wall of the second groove, the other end of the third reset spring is fixedly arranged on the telescopic needle, the lifting ring button is further provided with a lifting ring, the lifting ring is provided with a bolt, the bolt penetrates through the lifting ring button and can rotate in the lifting ring button, and the bolt further penetrates through the two sliding grooves and can slide in the sliding grooves.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a set up folding assembly, because support frame and lower joint are connected, the push rod is connected with last joint, through folding lower joint and last joint and can reach folding effect, and when folding, drag and draw the bail and make flexible needle break away from the mounting groove and can realize folding, convenient operation has solved its inconvenient operation of folding system on general shallow, when using, brings certain inconvenient problem for the user.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the folding assembly of the present invention;

fig. 3 is a schematic structural view of the upper joint of the present invention;

fig. 4 is an exploded view of the upper joint of the present invention;

fig. 5 is an exploded view of the folding assembly of the present invention;

FIG. 6 is an exploded view of the clamping support device of the present invention;

fig. 7 is an exploded view of the insertion fixing device of the present invention;

FIG. 8 is a partial cross-sectional view of the clamping support device and the inserting fixture of the present invention;

fig. 9 is a partial structural sectional view of the insertion fixing device of the present invention;

fig. 10 is an enlarged view of a portion a in fig. 9 according to the present invention.

The meaning of the individual reference symbols in the figures is:

1. a support frame;

2. a seat plate;

3. a push rod;

4. a front wheel;

5. a folding assembly; 50. an upper joint; 501. a first groove; 5011. a card slot; 5012. a chute; 502. a fixed block; 503. a second groove; 5031. a through hole; 504. a bump; 505. a third groove; 506. a semicircular cushion block; 51. the lower joint; 511. a shaft hole; 512. mounting grooves; 52. clamping the supporting device; 521. a button rubber cover; 522. a seat plate locking block; 523. a bevel; 524. a first return spring; 525. a seat plate button; 526. self-tapping screws; 53. a plug-in fixing device; 531. a bail button; 532. a wedge block; 533. a second return spring; 534. a needle is retracted; 535. a limiting ring; 536. a third return spring; 537. lifting a ring; 538. a bolt;

6. a rear wheel fixing frame;

7. and (4) a protection fence.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 10, the present invention provides a technical solution:

a folding system of a folding trolley for children comprises a support frame 1, wherein a seat plate 2 is arranged on the support frame 1, a push rod 3 is arranged on one tail end rod body of the support frame 1, a front wheel 4 is arranged on the other tail end rod body of the support frame 1, a rear wheel fixing frame 6 is also arranged on the support frame 1, and a corresponding rear wheel is arranged on the rear wheel fixing frame 6, so that the device can normally move; the support frame 1 is also provided with a protective fence 7, a folding component 5 is arranged between the support frame 1 and the push rod 3, the folding component 5 comprises an upper joint 50 and a lower joint 51, the upper joint 50 is rotatably connected with the lower joint 51, the support frame 1 is matched with the sliding grooves in the lower joint 51 in an inserting way and is fixed by using a socket nail, the push rod 3 is fixedly connected with the upper joint 50 by the socket nail, the upper joint 50 is internally provided with a first groove 501 communicated with the outside, the left and right groove walls of the first groove 501 are respectively provided with a clamping groove 5011 communicated with the outside, the left and right groove walls of the first groove 501 close to the notch position are respectively provided with a sliding groove 5012, the groove wall of the first groove 501 close to the notch position is also integrally formed with a fixed block 502, the fixed block 502 is internally provided with a second groove 503 communicated with the first groove 501, the front groove wall of the second groove 503 is provided with a through hole 5031 communicated with, the left side surface and the right side surface of the upper joint 50 are respectively provided with a convex block 504, a third groove 505 is arranged in the convex block 504, a semicircular cushion block 506 is fixedly arranged in the third groove 505 through a socket nail, a complete through hole is formed between the semicircular cushion block 506 and the groove wall of the third groove 505, the lower joint 51 is provided with a mounting groove 512 communicated with the outside, the fixed block 502 is positioned in the mounting groove 512, shaft holes 511 communicated with the outside are respectively arranged in the fixed block 502 and the groove wall of the mounting groove 512, the shaft holes 511 are positioned at the positions, close to the bottom end, of the fixed block 502, a rotating shaft is arranged in the shaft holes 511, the fixed block 502 is rotatably connected with the groove walls of the mounting groove 512 through the rotating shaft, the upper joint 50 and the lower joint 51;

a clamping support device 52 is arranged in the first groove 501, the clamping support device 52 comprises a button rubber cover 521 fixedly mounted on the groove wall of the first groove 501, two seat plate locking blocks 522 which are symmetrical to each other are arranged above the button rubber cover 521, inclined planes 523 are arranged on the seat plate locking blocks 522, clamping ends of the seat plate locking blocks 522 penetrate through the clamping grooves 5011 and are in clamping fit with the clamping grooves 5011, a first return spring 524 is tightly welded between the two seat plate locking blocks 522, two ends of the first return spring 524 are respectively tightly welded on the two seat plate locking blocks 522, a seat plate button 525 is further arranged on the front side of the two seat plate locking blocks 522, the seat plate button 525 abuts against the inclined planes 523 along the tail ends of the two plate bodies in the length direction of the button rubber cover 521, when the seat plate button 525 is pushed towards the direction of the seat plate locking blocks 522, the two plate bodies of the button 525 can move forwards along the inclined planes 523, and the distance between the end parts of the two inclined, the seat plate button 525 will press the two seat plate locking blocks 522 towards the middle position, so that the clamping ends of the seat plate locking blocks 522 can move a certain distance towards the clamping slots 5011; still threaded connection is used for supporting on the cell wall of its notch position of first recess 501 and comes to carry out spacing self tapping screw 526 to bedplate button 525 on bedplate button 525 front side, and the terminal protruding cap of self tapping screw 526 is located bedplate button 525's front side, and is spacing bedplate button 525, guarantees that bedplate button 525 can keep in contact with inclined plane 523 all the time along two plate body ends of button gum cover 521 length direction, avoids bedplate button 525 to drop from first recess 501.

In this embodiment, bedplate locking piece 522 and bedplate button 525 are located between the roof of button gluey lid 521 and first recess 501, the bottom plate that utilizes the roof of first recess 501 and button gluey lid 521 supports bedplate locking piece 522 and bedplate button 525, guarantee that bedplate locking piece 522 and bedplate button 525 can not drop, bedplate locking piece 522 and bedplate button 525 can slide in the clearance department between the roof of first recess 501 and the bottom plate of button gluey lid 521 simultaneously, guarantee can artificial extrusion bedplate button 525.

The lower joint 51 is further provided with an inserting fixing device 53, the inserting fixing device 53 comprises a lifting ring button 531 arranged in the second groove 503, a wedge block 532 is integrally formed at the bottom end of the lifting ring button 531, a second return spring 533 is further wound on the lifting ring button 531, one end of the second return spring 533 is fixedly arranged on the lifting ring button 531, the other end of the second return spring 533 is fixedly arranged on the groove wall of the second groove 503, a telescopic needle 534 is arranged on the front side of the lifting ring button 531, a limit ring 535 is arranged on the telescopic needle 534, the tail end of the telescopic needle 534 passes through a through hole 5031 and is positioned in the mounting groove 512, the limit ring 535 abuts against a front side hole of the through hole 5031 far away from the lower joint 51, a third return spring 536 is wound on the telescopic needle 534, one end of the third return spring 536 is fixedly arranged on the groove wall of the second groove 503, the other end of the third return spring 536 is fixedly arranged on the telescopic needle 534, when the second return spring 533 is in a normal state, the inclined plane of the wedge block 532 abuts against the inclined plane at the end of the telescopic needle 534, and the telescopic needle 534 abuts against the direction of the mounting groove 512, so that the end of the telescopic needle 534 passes through the through hole 5031 and is stably inserted into the mounting groove 512, at this time, the third return spring 536 is in a compressed state, and since the telescopic needle 534 is inserted into the mounting groove 512 from the through hole 5031, part of the column of the telescopic needle 534 is located in the second groove 503, and the remaining part of the column of the telescopic needle 534 is located in the mounting groove 512, thereby fixing the lower joint 51 and the upper joint 50, and at this time, the lower joint 51 and the upper joint 50 cannot rotate;

the lift ring button 531 is further provided with a lift ring 537, the lift ring 537 is provided with a latch 538, the lift ring button 531 is provided with a through hole for the latch 538 to pass through, the latch 538 passes through the through hole in the lift ring button 531 and can rotate in the through hole in the lift ring button 531, the latch 538 simultaneously passes through two sliding slots 5012 and can slide in the sliding slot 5012, when the lower joint 51 and the upper joint 50 are folded, the lift ring 537 is pulled towards the sliding slot 5012, the lift ring 537 moves towards the sliding slot 5012 to drive the lift ring button 531 to move towards the sliding slot 5012, at this time, the wedge 532 also starts to move towards the sliding slot 5012, the acting force of the wedge 532 against the telescopic pin 534 becomes smaller and smaller, and the third return spring 536 needs to be restored, the telescopic pin 534 is pushed towards the second groove 503 to move the end of the telescopic pin 534 from the mounting groove 512 to the through hole 5031, at this time, the tail end of the telescopic needle 534 is not positioned in the mounting groove 512, the lower joint 51 is not limited, the lower joint 51 and the upper joint 50 can rotate, the folding is realized, the folding effect is achieved, and the operation is convenient;

when the lower joint 51 and the upper joint 50 are unfolded, the above operation of lifting and pulling the lifting ring 537 is repeated to ensure that the end of the telescopic pin 534 is located at the position of the through hole 5031, and then the lower joint 51 is rotated until the included angle between the lower joint 51 and the upper joint 50 is 180 degrees, and finally the lifting ring 537 is released, at this time, the acting force of the second return spring 533 which returns to the original state is greater than the acting force of the third return spring 536 which returns to the original state, so as to drive the lifting ring button 531 to continue to move in the opposite direction of the chute 5012, at this time, the acting force of the wedge 532 which abuts against the telescopic pin 534 is increasingly greater, so as to press the telescopic pin 534 to move the telescopic pin 534 in the direction of the mounting groove 512, at this time, part of the telescopic pin 534 is still inserted into the mounting groove 512 along the through hole 5031, thereby realizing the limiting of the lower joint 51 and the upper joint 50, and ensuring that the lower joint 51 and the.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (5)

1. A folding system of a child folding stroller, comprising a support frame (1), characterized in that: the seat board is arranged on the support frame (1), a push rod (3) is arranged at one end of the support frame (1), a front wheel (4) is arranged at the other end of the support frame (1), a rear wheel fixing frame (6) is further arranged on the support frame (1), a protection fence (7) is further arranged on the support frame (1), a folding assembly (5) is further arranged between the support frame (1) and the push rod (3), the folding assembly (5) comprises an upper joint (50) and a lower joint (51), and the upper joint (50) is rotatably connected with the lower joint (51).

2. The folding system for a child folding stroller of claim 1, wherein: the joint is characterized in that a first groove (501) communicated with the outside is arranged in the upper joint (50), clamping grooves (5011) communicated with the outside are formed in the groove walls of the left side and the right side of the first groove (501), sliding grooves (5012) are formed in the groove walls of the left side and the right side of the first groove (501) close to the notch position of the first groove, a fixing block (502) is further arranged on the groove wall of the first groove (501) close to the notch position of the first groove, a second groove (503) communicated with the first groove (501) is formed in the fixing block (502), and a through hole (5031) communicated with the outside is formed in the groove wall of the front side of the second groove (503).

3. The folding system for a child folding stroller of claim 2, wherein: go up all to be equipped with lug (504) on the left and right sides face of joint (50), be equipped with third recess (505) in lug (504), there is semicircle cushion (506) through nest nail fixed mounting in third recess (505), form a complete through-hole between the cell wall of semicircle cushion (506) and third recess (505), be equipped with mounting groove (512) on lower joint (51), fixed block (502) are located in mounting groove (512), all be equipped with shaft hole (511) that are linked together with the external world in fixed block (502) and the cell wall of mounting groove (512), rotate through the pivot and be connected between the cell wall of fixed block (502) and mounting groove (512).

4. A folding system for a child folding stroller according to claim 3, wherein: be equipped with joint strutting arrangement (52) in first recess (501), joint strutting arrangement (52) are including button glue lid (521) of fixed mounting on first recess (501) cell wall, the top of button glue lid (521) is equipped with two bedplate locking pieces (522) of mutual symmetry, be equipped with inclined plane (523) on bedplate locking piece (522), the joint end of bedplate locking piece (522) pass draw-in groove (5011) and with draw-in groove (5011) between the joint cooperation, two still closely weld between bedplate locking piece (522) has first reset spring (524), two the front side of bedplate locking piece (522) still is equipped with bedplate button (525), bedplate button (525) support on inclined plane (523) along two plate body ends of button glue lid (521) length direction, it is used for supporting on bedplate button (525) leading flank to carry out spacing self tapping screw to bedplate button (525) on first recess (501) is close to its notch position on the cell wall still threaded connection have and is used for supporting bedplate button (525) leading flank (526).

5. The folding system for a child folding stroller of claim 4, wherein: the lower joint (51) is further provided with an inserting fixing device (53), the inserting fixing device (53) comprises a lifting ring button (531) arranged in the second groove (503), the bottom end of the lifting ring button (531) is provided with a wedge-shaped block (532), the lifting ring button (531) is further provided with a second reset spring (533) in a winding manner, one end of the second reset spring (533) is fixedly installed on the lifting ring button (531), the other end of the second reset spring (533) is fixedly installed on the groove wall of the second groove (503), the front side of the lifting ring button (531) is provided with a telescopic needle (534), the telescopic needle (534) is provided with a limit ring (535), the tail end of the telescopic needle (534) penetrates through the through hole (5031) and is located in the installation groove (512), the limit ring (535) abuts against the front side hole of the through hole (5031), and the telescopic needle (534) is provided with a third reset spring (536) in a winding manner, one end fixed mounting of third reset spring (536) is on the cell wall of second recess (503), the other end fixed mounting of third reset spring (536) is on telescopic needle (534), still be equipped with on carrying ring button (531) and carry ring (537), be equipped with bolt (538) on carrying ring (537), bolt (538) pass carry ring button (531) and can be at the interior rotation of carrying ring button (531), bolt (538) still pass two simultaneously spout (5012) and can slide in spout (5012).

Images