CN210174891U

CN210174891U - Shopping cart

Info

Publication number: CN210174891U
Application number: CN201920516938.7U
Authority: CN
Inventors: 陈曙光
Original assignee: Yongkang Meijiajing Household Goods Factory
Current assignee: Yongkang Meijiajing Household Goods Factory
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-03-24
Anticipated expiration: 2029-04-16

Abstract

A shopping cart comprises a frame, a storage basket arranged on the frame, a front wheel arranged on the frame and a rear wheel arranged on the frame, wherein the front wheel comprises a support frame, a roller body rotatably arranged on the support frame, an end cover arranged above the support frame and a plurality of balls arranged between the end cover and the support frame; the end cover is provided with a first sliding groove for the movement of the ball; a gap is formed between the end cover and the supporting frame; the utility model has the advantages that the steering of the front wheel is more flexible and the front wheel can bear larger weight by arranging the plurality of balls and the plurality of rolling bodies; through the setting in end cover and support frame clearance for be convenient for refuel the maintenance to ball and cylinder, avoid ball and cylinder to rust in the use, thereby guarantee that the turning to of front wheel is nimble.

Description

Shopping cart

Technical Field

The utility model belongs to the technical field of the shopping cart technique and specifically relates to a shopping cart is related to.

Background

Shopping carts are widely used in homes nowadays, and a shopping cart is indispensable in a common home to be used as a tool for buying vegetables and transporting goods, so that the shopping cart is popular among consumers and is used for purchase.

The inventor finds that the front wheel of the existing shopping cart is not heavy in bearing weight during use, and a front wheel bearing is easy to rust when the shopping cart is used in a humid environment, so that the shopping cart is inflexible in steering and short in service life.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome prior art not enough, provide a bearing weight is big, be difficult for rustting, turn to nimble shopping cart.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a shopping cart comprises a frame, a storage basket arranged on the frame, a front wheel arranged on the frame and a rear wheel arranged on the frame, wherein the front wheel comprises a support frame, a roller body rotatably arranged on the support frame, an end cover arranged above the support frame and a plurality of balls arranged between the end cover and the support frame; the end cover is provided with a first sliding groove for the movement of the ball; a gap is formed between the end cover and the supporting frame; through the arrangement of the plurality of balls, the friction force between the end cover and the support frame is reduced, so that the support frame can rotate more flexibly, and the support frame is connected with the roller body, so that the support frame can drive the roller body to rotate more flexibly; the balls can roll in the first sliding groove and the second sliding groove through the arrangement of the first sliding groove and the second sliding groove, the first sliding groove and the second sliding groove play a role in limiting the balls, the balls are prevented from sliding out of the end cover and the supporting frame, the end cover can be prevented from inclining due to the arrangement of the plurality of balls in the sliding grooves, the balls can better disperse pressure from the end cover, and therefore the front wheel can bear articles with larger weight; the arrangement of the gap between the end cover and the support frame is convenient for oiling and maintaining the balls, and the balls are prevented from rusting in the using process, so that the steering flexibility of the front wheel is ensured.

The support frame below is equipped with the backup pad, is equipped with a plurality of rolling elements between this backup pad and the support frame, through set up the rolling element between backup pad and support frame, can further improve the steering flexibility ratio of front wheel.

The supporting frame is provided with a third sliding chute for the rolling body to move, and the supporting plate is provided with a fourth sliding chute for the rolling body to move; through the setting of third spout and fourth spout for the rolling element can roll in third spout and fourth spout, and third spout and fourth spout play the limiting displacement to the rolling element, avoid the rolling element from the roll-off between backup pad and the support frame.

The end cover is connected with the supporting plate through a stud, a through hole for the stud to pass through is formed in the supporting frame, and the stud can rotate relative to the through hole; the setting of through-hole for only need toward adding antirust oil between end cover and the support frame, antirust oil can get into the backup pad through the through-hole on, and then carries out anti-rust treatment to a plurality of rolling elements in the backup pad, need not the substep and maintains, and is simple high-efficient.

A limit nut is fixedly arranged on the stud, and the lower part of the limit nut abuts against the end cover; through the arrangement of the nut, the end cover and the support plate move towards the center, so that the contact of the ball and the rolling body to the support frame is ensured, and a good sliding effect is realized; and the stud is fixedly connected with the limiting nut, so that the loosening of the limiting nut can be avoided, and the ball and the rolling body can not fall out of the sliding groove.

The frame is provided with a front wheel rod, the front wheel is connected with the front wheel rod through a connecting piece, the connecting piece is provided with a through hole corresponding to the stud, and the stud and the connecting piece are fixed through a nut; through the mode of threaded connection, the front wheel which is most easily damaged can be disassembled, assembled and replaced at any time, so that the service life of the shopping cart is effectively prolonged; the front wheel is in threaded connection with the locking piece, and the connecting piece is sleeved on the stud, so that the front wheel is simple to disassemble and assemble, the threaded wheel can be used in other shopping carts, and the application range of the threaded wheel is expanded.

The connecting piece is provided with a slotted hole for clamping the nut; due to the arrangement of the slotted hole, the locking nut can be effectively prevented from being separated, and the connection firmness of the locking nut is improved.

A counter bore is formed in the top of the nut, and a gasket is arranged in the counter bore; through the setting of gasket for produce a normal pressure that does not change along with external force between double-screw bolt and the nut, in order to produce one and to stop double-screw bolt nut relative pivoted frictional force, avoid in the use, double-screw bolt and nut take place to become flexible, strengthen the stability and the fastness that the front wheel is connected.

The storage basket comprises a base and a basket body arranged on the base, the base is connected with the basket body through a fixing piece, and the fixing piece comprises a connecting part which can be rotatably arranged on the basket body, a clamping part which can be buckled on the base and a pulling part which is arranged on a buckle; the clamping part is provided with a first positioning groove, and the base is provided with a first positioning block matched with the first positioning groove; the clamping part can rotate up and down within a certain range through the arrangement of the connecting part, so that the clamping action of the clamping part on the base is realized; through the setting of first constant head tank and first locating piece for the chucking action of card portion to the base is more firm, avoids card portion to drop from the base, makes the space more stable that base and basket formed.

A rod body pad piece is arranged between the front wheel rod and the base, the rod body pad piece is provided with a first groove matched with the base, and a second groove perpendicular to the first groove is also arranged on the rod body pad piece; through the arrangement of the rod body cushion piece, the direct friction between the front wheel rod and the frame bracket can be avoided, and the damage caused by the friction is avoided; the first groove is formed in the rod body pad, so that the rod body pad can be attached to a frame, and the rotation of the rod body pad after being stressed is avoided; and set up the second recess for after first recess became invalid, the body of rod pad takes place to rotate and can realize fixing through the second recess, improves the life of body of rod pad.

In summary, the utility model, through the arrangement of the plurality of balls and the plurality of rolling bodies, the steering of the front wheel is more flexible and can bear larger weight; through the setting in end cover and support frame clearance for be convenient for refuel the maintenance to ball and cylinder, avoid ball and cylinder to rust in the use, thereby guarantee that the turning to of front wheel is nimble.

Drawings

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

FIG. 2 is an exploded view of the front wheel of the present invention;

FIG. 3 is an enlarged schematic view at B of FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 2 at C;

FIG. 5 is a schematic perspective view of a rod body pad according to the present invention;

Detailed Description

As shown in fig. 1-5, a shopping cart comprises a frame, a storage basket disposed on the frame, a front wheel disposed on the frame, and a rear wheel 105 disposed on the frame, wherein the front wheel comprises a support frame 3, a roller body 4, an end cover 5, a ball 6, a support plate 9, and a rolling body 10, the support frame 3 is a U-shaped bending member, the roller body is a commercially available roller, the roller body is disposed in an opening of the U-shaped bending member, a rotating shaft is disposed through the center of the roller body 4, and two ends of the rotating shaft are drivingly disposed through the support frame 3, such that the roller body 4 can rotate on the support frame 3; a first sliding groove 7 is concavely arranged at the closed position of the support frame 3 in a circular ring shape, and the ball 6 can roll in the sliding groove; the end cover 5 is arranged above the balls 6, the contact part of the end cover 5 and the balls 6 protrudes upwards to form a second chute 8, the first chute 7 and the second chute 8 play a role in limiting the balls 6 together, the balls 6 are prevented from falling off, meanwhile, the balls 6 can better play a role in supporting the end cover, an annular gap exists between the lower surface of the end cover 5 and the upper surface of the support frame 3, the balls are convenient to refuel and maintain, the balls are prevented from rusting in the use process, and therefore the steering flexibility of the front wheel is guaranteed; a third sliding groove 11 is formed at the closed position of the support frame 3 and protrudes upwards in a circular ring shape, the rolling body 10 can roll in the sliding groove, and the rolling body 10 can roll in the sliding groove; the supporting plate 9 is arranged below the rolling body 10, a contact part of the supporting plate 9 and the rolling body 10 is sunken downwards to form a fourth sliding groove 12, and the third sliding groove 11 and the fourth sliding groove 12 play a limiting role on the rolling body 10 together to prevent the rolling body 10 from falling out from between the supporting plate 9 and the rolling body 10.

Specifically, the end cover 5 is connected with the support plate 9 through a stud 13, a through hole for the stud 13 to pass through is formed in the support frame 3, the stud 13 upwardly passes through the through hole to connect the end cover 5 and the support plate 9 in series, and the stud 13 can rotate relative to the through hole, so that the support frame 3 can rotate relative to the stud 13 to realize the steering function of the front wheel; a limit nut 14 is fixedly arranged on the stud 13, and the lower part of the limit nut 14 is abutted against the end cover 5, so that the end cover 5 and the support plate 9 move towards the center, thereby ensuring the contact of the ball 6 and the rolling body 10 to the support frame 3 and realizing a good sliding effect; and the stud 13 is fixedly connected with the limit nut 14, so that the looseness of the limit nut 14 can be avoided, and the ball and the rolling body can not fall out of the sliding groove.

Be equipped with preceding wheel pole 15 on the frame, this preceding wheel pole 15 top cover is equipped with connecting piece 16, and connecting piece 16 is made by plastics, links firmly with preceding wheel pole 15 through the riveting, avoids connecting piece 16 to take place to slide for wheel pole 15 before relatively, be equipped with the through-hole that corresponds with double-screw bolt 13 on the connecting piece 16, and double-screw bolt 13 upper end is connected a nut 17 after passing this through-hole, realizes fixing between double-screw bolt 13 and the connecting piece 16 through this nut, is equipped with the slotted hole 23 that supplies nut 17 card to go into on the connecting piece, and the shape, the size of this slotted hole 23 are corresponding with the nut, and preferred setting is the hexagon shape, effectively prevents lock nut and breaks.

Specifically, the top of the nut 17 is recessed downwards to form a circle of annular counter bores, and annular pad pieces 61 are arranged in the counter bores.

A rod body cushion piece 21 is arranged between the front wheel rod 15 and the base 18, a first groove 211 matched with the base 18 is inwards recessed in the rod body cushion piece 21, the first groove 211 is attached to the cambered surface of the base 18, and the phenomenon that the rod body cushion piece rotates after being stressed is avoided; and this body of rod pad 21 is last still to be equipped with the second recess 212 mutually perpendicular with first recess, and sets up the second recess for after the first recess became invalid, the body of rod pad takes place to rotate and can realize fixing through the second recess, improves the life of body of rod pad.

The storage basket comprises a base 18 and a basket body 19, the frame comprises a push rod 22, a front wheel rod 15 and a bottom frame, the position, close to the bottom end, of the push rod 22 is hinged to a rear frame of the base 18, a rear frame of the basket body 19 is hinged to the push rod 22, a first connecting rod 24 is hinged to a front frame of the basket body 19, and therefore the storage basket can be converted between a shopping cart and a shelf cart, and the storage basket can be used as a shopping cart with a frame and a frameless cart.

The base 18 is connected with the basket 19 through a fixing piece 20, the fixing piece 20 comprises a connecting portion 201, a clamping portion 202 and a pulling portion 203, the connecting portion 201, the clamping portion 202 and the pulling portion 203 are integrally formed, the connecting portion 201 is provided with two connecting portions 201, the two connecting portions 201 are hinged to a first connecting rod 24, the fixing piece can rotate in a certain range relative to the first connecting rod 24, the connecting portions 201 can drive the clamping portion 202 to rotate, an open slot is formed in the inner side of the clamping portion 202, the shape of the open slot is the same as that of the front side of the base 18, the clamping portion 202 can be clamped with the front side of the base 18 when rotating clockwise, and the space formed by the base 18 and the basket 19 is more stable; the clamping action of the clamping part 202 on the base 18 can be realized by turning over the wrench part 203, the operation is simple, and time and labor are saved; first positioning groove 204 is formed in the clamping portion, and first positioning block 181 matched with first positioning groove 204 is arranged on base 18, so that when clamping portion 202 is clamped with base 18, first positioning groove 204 and first positioning block 181 can be clamped, clamping action of the clamping portion on the base is firmer, and the clamping portion is prevented from falling off from the base.

The handle is arranged on the push rod 22 and comprises a first hand-held part, a second hand-held part 102 and two fixing parts 103, the two fixing parts 103 are respectively arranged at two ends of the first hand-held part, the second hand-held part 102 is rotatably connected with the first hand-held part, and the second hand-held part 102 rotates relative to the first hand-held part along the axial lead of the first hand-held part; the second handheld portion 102 is provided with a plurality of fifth grooves 104 which are recessed inwards, so that the hanging rope can be hung in the fifth grooves 104 when not used, and the hook cannot move left and right in the grooves, and the condition that the hanging rope is shaken on the second handheld portion 102 in a mess during the movement process is avoided.

The rear wheel 105 is a three-blade hub which is respectively arranged at the bottom of the push rod 22, and the shopping cart can move more conveniently when climbing stairs or going downstairs.

Claims

1. A shopping cart comprises a cart frame, a storage basket arranged on the cart frame, a front wheel arranged on the cart frame and a rear wheel (105) arranged on the cart frame; the method is characterized in that: the front wheel comprises a support frame (3), a roller body (4) which can be rotatably arranged on the support frame, an end cover (5) arranged above the support frame and a plurality of balls (6) arranged between the end cover and the support frame; a first sliding chute (7) for moving the balls is arranged on the supporting frame, and a second sliding chute (8) for moving the balls is arranged on the end cover; a gap is arranged between the end cover and the supporting frame.

2. The shopping cart as claimed in claim 1, wherein: a supporting plate (9) is arranged below the supporting frame (3), and a plurality of rolling bodies (10) are arranged between the supporting plate (9) and the supporting frame (3).

3. The shopping cart as claimed in claim 2, wherein: the supporting frame (3) is provided with a third sliding chute (11) for the rolling body to move, and the supporting plate is provided with a fourth sliding chute (12) for the rolling body (10) to move.

4. The shopping cart as claimed in claim 1, wherein: the end cover (5) is connected with the support plate (9) through a stud (13), a through hole for the stud (13) to pass through is formed in the support frame (3), and the stud (13) can rotate relative to the through hole.

5. The shopping cart as claimed in claim 4, wherein: and a limit nut (14) is fixedly arranged on the stud (13), and the lower part of the limit nut (14) is abutted against the end cover (5).

6. The shopping cart as claimed in claim 4, wherein: the bicycle frame is provided with a front wheel rod (15), the front wheel is connected with the front wheel rod (15) through a connecting piece (16), the connecting piece (16) is provided with a through hole corresponding to the stud (13), and the stud (13) and the connecting piece (16) are fixed through a nut (17).

7. The shopping cart as claimed in claim 6, wherein: the connecting piece is provided with a slotted hole (23) for the nut (17) to be clamped in.

8. The shopping cart as claimed in claim 6, wherein: the top of the nut (17) is provided with a counter bore, and a pad piece (61) is arranged in the counter bore.

9. The shopping cart as claimed in claim 1, wherein: the storage basket comprises a base (18) and a basket body (19) arranged on the base (18), the base (18) is connected with the basket body (19) through a fixing piece (20), and the fixing piece (20) comprises a connecting part (201) which can be rotatably arranged on the basket body, a clamping part (202) which can be buckled on the base and a pulling part (203) arranged on a buckle; a first positioning groove (204) is formed in the clamping portion, and a first positioning block (181) matched with the first positioning groove (204) is arranged on the base (18).

10. The shopping cart as claimed in claim 9, wherein: a rod body pad piece (21) is arranged between the front wheel rod (15) and the base (18), a first groove (211) matched with the base is formed in the rod body pad piece (21), and a second groove (212) perpendicular to the first groove is further formed in the rod body pad piece (21).