CN210478715U - Folding push-and-pull vehicle - Google Patents

Abstract

The utility model belongs to the technical field of the handcart, a foldable push-and-pull car is provided, including the first base that is provided with directional wheel and the second base that is provided with the universal wheel, still include first pull rod mechanism and second pull rod mechanism, first pull rod mechanism includes two first pull rod pipes and first pull rod hand (hold), first pull rod pipe includes that first body and cover establish second body in the first body, the both ends of first body respectively with first base with the second base is connected, the one end of second body with first pull rod hand (hold) is connected, second pull rod mechanism include one end with second base articulated second pull rod pipe and with the second pull rod hand (hold) that the other end of second pull rod pipe is connected. The utility model discloses a foldable push-and-pull car has multiple user state, and simple structure.

Description

Folding push-and-pull vehicle

Technical Field

The utility model relates to a handcart technical field, concretely relates to foldable push-and-pull car.

Background

The trolley is a trolley which is convenient for transporting a small amount of goods in a short distance, and is increasingly popularized in our lives, particularly products which can not be taken away for leisure, traveling, shopping, delivering goods, loading and unloading goods and taking care of children, and the trolley indeed provides more convenience for people.

The inventor of this application has applied for a luggage van that authorizes bulletin number is CN 206107279U in 2016.08.19, and this luggage van has realized that the bottom plate is scalable, has increased the area of bottom plate, and the pull rod can be accomodate in the second guide slot, can fix the pull rod, has reduced the volume, more conveniently carries, and in addition, the pull rod height-adjustable is applicable to the people of different heights, makes the trip more convenient. However, the luggage cart can be used only when the floor panel is parallel or substantially parallel to the ground, and cannot be used when the floor panel is inclined with respect to the ground, i.e., in a single use state.

The utility model with the publication number of CN 208216770U discloses a foldable multi-form convertible hand-push pull cart which can be used under the above two conditions, but the structure of the push-pull cart is complex.

SUMMERY OF THE UTILITY MODEL

To overcome the drawbacks of the prior art, the present invention provides a foldable push-pull cart, which has a plurality of usage states and a simple structure.

In order to achieve the above object, the utility model provides a foldable push-and-pull car, including the first base that is provided with directional wheel and the second base that is provided with the universal wheel, still include first pull rod mechanism and second pull rod mechanism, first pull rod mechanism includes two first pull rod pipes and first pull rod hand (hold), first pull rod pipe includes that first body and cover establish second body in the first body, the both ends of first body respectively with first base with the second base is connected, the one end of second body with first pull rod hand (hold) is connected, second pull rod mechanism include one end with second base articulated second pull rod pipe and with the second pull rod hand (hold) that the other end of second pull rod pipe is connected.

Further, a locking device for locking the second pull rod pipe is arranged on the second base.

Further, the locking device includes:

the pivot is fixedly arranged on the second base;

the first connecting piece is rotatably sleeved on the pivot and is connected with the first pipe body;

the second connecting piece is rotatably sleeved on the pivot, and one end of the second connecting piece is connected with the first connecting piece in a sliding manner along the axial direction of the pivot;

the locking piece is fixedly arranged on the second base, and when the other end of the second connecting piece moves to a position matched with the locking piece, the locking piece locks the rotation of the second connecting piece;

the resetting piece is used for enabling the other end of the second connecting piece to have a tendency of keeping being matched with the locking piece;

the transmission part is sleeved on the pivot or arranged on the second base and can slide along the axial direction of the pivot, one end of the transmission part is abutted against the second connecting piece, and the other end of the transmission part is provided with a protruding part; and

the adjusting piece is rotatably sleeved on the pivot and provided with an end face, the end face is provided with a concave part matched with the convex part, and the convex part and the concave part can be separated from each other by the rotation of the adjusting piece on the pivot.

Further, the second connecting piece is a spline housing, the spline housing is provided with an external spline, and the first connecting piece and the second connecting piece are provided with an internal spline groove matched with the external spline.

Furthermore, the adjusting part is provided with a handle part, a limiting groove is formed in the second base, and the handle part moves in the limiting groove.

Further, the first base is provided with a tray in a hinged mode, and the tray can swing to a longitudinal position, wherein an included angle of 90 degrees is formed between the tray and the first base, from a transverse position attached to the first base.

Furthermore, the first base is provided with a containing groove for containing the second pull rod pipe and the second pull rod handle.

Furthermore, the device also comprises a reinforcing rod, and two ends of the reinforcing rod are respectively connected with the first base and the second base.

Further, a supporting plate is arranged between the first base and the second base.

Further, the support plate includes a plurality of base plates disposed on the first pipe body and/or the reinforcing rod.

The utility model has the advantages that: the utility model provides a foldable push-and-pull car through setting up the second pull rod mechanism that can rotate, and the push-and-pull car just has two kinds of user states like this. When the first pull rod mechanism works, the base of the push-pull vehicle inclines with the ground, so that the push-pull vehicle carries the goods to move in an overall inclined posture. When the first pull rod mechanism is folded and the second pull rod mechanism works, the base of the push-pull vehicle is parallel or approximately parallel to the ground, so that the push-pull vehicle can carry goods to move in an overall horizontal posture. In addition, the utility model provides a foldable push-and-pull car constitutes spare part less, simple structure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a perspective view of a foldable push-pull cart according to an embodiment of the present disclosure;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a cross-sectional view taken along plane A-A of FIG. 2;

FIG. 4 is a perspective view of the second base and a portion of the locking device when assembled together;

FIG. 5 is a perspective view of the second base and locking device assembled together;

FIG. 6 is a perspective view of the adjustment member;

fig. 7 is a schematic structural view of a foldable push-pull cart including a support plate according to an embodiment of the present invention.

Reference numerals:

10-a first base, 11-a directional wheel, 12-a containing groove, 20-a second base, 21-a universal wheel, 22-a limiting groove, 30-a first pull rod mechanism, 31-a first pull rod pipe, 311-a first pipe body, 312-a second pipe body, 32-a first pull rod handle, 40-a second pull rod mechanism, 41-a second pull rod pipe, 42-a second pull rod handle and 50-a locking device, 51-pivot, 52-first connecting piece, 53-second connecting piece, 54-locking piece, 55-resetting piece, 56-transmission piece, 561-convex part, 57-adjusting piece, 571-end surface, 572-concave part, 573-handle part, 60-tray, 70-reinforcing rod, 80-supporting plate and 81-base plate.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

In the description of the present application, 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," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience of description and simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.

Furthermore, the terms "first", "second", etc. 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. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 7, the present embodiment provides a foldable push-pull cart, which includes a first base 10, a second base 20, a first pull rod mechanism 30 and a second pull rod mechanism 40, wherein the first base 10 and the second base 20 are disposed opposite to each other, two directional wheels 11 are disposed on the first base 10, and at least one universal wheel 21, typically 1 to 2 universal wheels 21, are disposed on the second base 20.

The first link mechanism 30 includes two first link pipes 31 and a first link handle 32, and the two first link pipes 31 are arranged in parallel. The first pull rod tube 31 includes a first tube body 311 and a second tube body 312 sleeved in the first tube body 311, and two ends of the first tube body 311 are respectively fixedly connected to the first base 10 and the second base 20. One end of the second tube 312 is connected to the first handle 32, and the other end is slidably connected to the end of the first tube 311 that is fixedly connected to the second base 20. Preferably, one end of the first tube 311 fixedly connected to the second base 20 passes through the second base 20 or is inserted into the second base 20, and the second tube 312 is inserted into the one end of the first tube 311, so as to conveniently realize the sliding connection between the second tube 312 and the first tube 311. The second draw bar mechanism 40 includes a second draw bar tube 41 having one end hinged to the second base 20 and a second draw bar handle 42 connected to the other end of the second draw bar tube 41. The second drawbar tube 41 is telescopic as the first drawbar tube 31.

In this embodiment, the push-pull cart has two states of use by providing the second link mechanism 40 that can be rotated. When the first link mechanism 30 is operated, the base of the push-pull cart is inclined with respect to the ground, so that the push-pull cart moves with the goods in an overall inclined posture. When the second pull rod mechanism 40 is operated after the first pull rod mechanism 30 is folded, the base of the push-pull vehicle is parallel or approximately parallel to the ground, so that the push-pull vehicle moves with the goods in an overall horizontal posture. In addition, the push-pull cart in the embodiment has fewer components and simple structure.

In one embodiment, a locking device 50 for locking the second pull rod pipe 41 is disposed on the second base 20, and the locking device 50 may be a screw or the like that can lock the rotation center. In one embodiment, the locking device 50 includes a pivot 51, a first link 52, a second link 53, a locking member 54, a reset member 55, a transmission member 56, and an adjustment member 57.

The pivot 51 is fixedly disposed on the second base 20, and the first connecting member 52 and the second connecting member 53 are rotatably disposed on the pivot 51. The first connecting member 52 is detachably connected to the first tube 311, and the second connecting member 53 is also movable in the axial direction of the pivot 51, and has one end slidably connected to the first connecting member 52 during the movement.

The locking member 54 is fixedly disposed on the second base 20, and the locking member 54 locks the rotation of the second connecting member 53 when the other end of the second connecting member 53 moves to a position where it is engaged with the locking member 54 as the second connecting member 53 moves.

A return member 55 for tending to keep the other end of the second coupling member 53 engaged with the locking member 54, the return member 55 preferably being a spring.

The transmission member 56 is sleeved on the pivot 51 or disposed on the second base 20, and can slide along the axial direction of the pivot 51. Preferably, the transmission member 56 is directly sleeved on the pivot 51, and the transmission member 56 can only move along the axial direction of the pivot 51 and can not rotate around the axis of the pivot 51. One end of the transmission member 56 abuts against the second link 53, and the other end thereof has a projection 561.

The adjusting member 57 is rotatably disposed on the pivot 51, and preferably, the adjusting member 57 can only rotate around the pivot 51 and cannot move along the axial direction of the pivot 51. The adjuster 57 has an end surface 571, the end surface 571 has a recess 572 cooperating with the projection 561, and rotation of the adjuster 57 on the pivot 51 disengages the projection 561 from the recess 572.

When the recess 572 of the adjusting member 57 is disengaged from the protrusion 561 of the transmission member 56, the transmission member 56 slides on the pivot 51, so as to drive the second link 53 to slide together, the second link 53 leaves the position engaged with the locking member 54, and when the protrusion 561 of the transmission member 56 abuts against the plane portion of the end surface 571 except the recess 572, the transmission member 56 does not slide, so that the second link 53 is maintained at the position not engaged with the locking member 54, i.e., at the unlocking position, and the first link 52 can rotate around the pivot 51, so as to drive the second rod mechanism 40 to rotate.

When the second rod mechanism 40 rotates to a proper angle, the adjusting member 57 is rotated, and under the action of the reset member 55, the concave portion 572 on the adjusting member 57 is engaged with the convex portion 561 on the transmission member 56 again, at this time, the second connecting member 53 moves to a position matched with the locking member 54, the locking member 54 locks the rotation of the second connecting member 53, and the second connecting member 53 is slidably connected with the first connecting member 52, so that the rotation of the first connecting member 52 is also locked, and in this case, the second rod mechanism 40 cannot rotate.

Since there are two second rod tubes 41, in the above-described lock device 50, it is preferable that the number of the adjusting members 57 is one, and both end surfaces thereof are provided with the above-described recesses 572, and accordingly, the number of the other components in the lock device 50 is correspondingly set to two.

By providing the locking device 50, the second link mechanism 40 can be maintained at a proper inclination angle, thereby allowing the push-pull cart and the goods thereon to be pulled more easily.

In one embodiment, the second connector 53 is a splined hub having external splines and the first connector 52 and the second connector 53 have internal splined grooves that mate with the external splines. This structure facilitates the engagement of the second coupling member 53 with the first coupling member 52 and the locking member 54.

In one embodiment, the adjusting member 57 has a handle portion 573, the second base 20 has a limiting groove 22, and the handle portion 573 moves in the limiting groove 22. The handle portions 573 are rotated, and when the handle portions 573 are located at the extreme positions at both ends of the stopper groove 22, respectively, the second link mechanism 40 is in both rotatable and non-rotatable states. A handle portion 573 is provided to facilitate adjustment. The second base 20 is provided with a limiting groove 22 for limiting the adjusting member 57 to rotate only around the pivot 51.

In one embodiment, a tray 60 is hinged on the first base 10, and the tray 60 can swing from a horizontal position attached to the first base 10 to a longitudinal position forming an angle of 90 ° with the first base 10. When the first pull rod mechanism 30 works, the tray 60 is unfolded to swing to a longitudinal position forming an included angle of 90 degrees with the first base 10, at this time, the tray 60 can hold goods such as a luggage case, and the problems of trouble, time consumption and the like caused by fixing in a rope or belt mode are avoided.

In one embodiment, the first base 10 is provided with a receiving groove 12 for receiving the second draw bar pipe 41 and the second draw bar handle 42. By the arrangement, the structure is more compact. In the case where the locking device 50 is not provided, the receiving groove 12 may also lock the second handle pipe 41 and the second handle bar 42, thereby preventing the second handle bar mechanism 40 from being arbitrarily moved in the non-operating state.

In one embodiment, a reinforcing rod 70 is further included, and both ends of the reinforcing rod are respectively connected to the first base 10 and the second base 20, and the reinforcing rod 70 can share the weight of the cargo, thereby reducing the supporting burden of the first pipe 311.

As shown in fig. 7, in one embodiment, a support plate 80 is disposed between the first chassis 10 and the second chassis 20. The support plate 80 may be a one-piece plate having both ends fixed to the first base 10 and the second base 20, respectively, or directly detachably fixed to the first pipe or the reinforcing bar 70. In one embodiment, the support plate 80 includes a plurality of base plates 81 disposed on the first tube 311 and/or the reinforcing rod 70. Regardless of whether the support plate 80 is one piece or multiple pieces, the support plate 80 has a slot that also receives the second pull rod tube 41. The supporting plate 80 is arranged, so that goods can be placed more stably, and the problem that small goods are easy to leak is solved.

In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (10)

1. A foldable push-pull cart comprising a first base (10) provided with orienting wheels (11) and a second base (20) provided with universal wheels (21), characterized in that: still include first pull rod mechanism (30) and second pull rod mechanism (40), first pull rod mechanism (30) includes two first pull rod pipes (31) and first pull rod hand (32), first pull rod pipe (31) are established including first body (311) and cover second body (312) in first body (311), the both ends of first body (311) respectively with first base (10) with second base (20) are connected, the one end of second body (312) with first pull rod hand (32) are connected, second pull rod mechanism (40) include one end with second base (20) articulated second pull rod pipe (41) and with second pull rod hand (42) that the other end of second pull rod pipe (41) is connected.

2. The foldable push-pull cart according to claim 1, wherein: the second base (20) is provided with a locking device (50) for locking the second pull rod pipe.

3. The foldable push-pull cart according to claim 2, wherein: the locking device (50) comprises:

a pivot (51) fixedly arranged on the second base (20);

the first connecting piece (52) is rotatably sleeved on the pivot (51) and is connected with the first pipe body (311);

the second connecting piece (53) is rotatably sleeved on the pivot (51), and one end of the second connecting piece is connected with the first connecting piece (52) in a sliding manner along the axial direction of the pivot (51);

a locking member (54) fixedly arranged on the second base (20), when the other end of the second connecting member (53) moves to a position matched with the locking member (54), the locking member (54) locks the rotation of the second connecting member (53);

a return element (55) for causing said other end of said second connecting element (53) to have a tendency to remain engaged with said locking element (54);

the transmission piece (56) is sleeved on the pivot (51) or arranged on the second base (20) and can slide along the axial direction of the pivot (51), one end of the transmission piece (56) is abutted against the second connecting piece (53), and the other end of the transmission piece is provided with a protruding part (561); and

the adjusting piece (57) is rotatably sleeved on the pivot (51), the adjusting piece (57) is provided with an end face (571), the end face (571) is provided with a concave part (572) matched with the convex part (561), and the convex part (561) can be disengaged from the concave part (572) by the rotating of the adjusting piece (57) on the pivot (51).

4. The foldable push-pull cart according to claim 3, wherein: the second connecting piece (53) is a spline sleeve, the spline sleeve is provided with an external spline, and the first connecting piece (52) and the second connecting piece (53) are provided with an internal spline groove matched with the external spline.

5. The foldable push-pull cart according to claim 3, wherein: the adjusting piece (57) is provided with a handle part (573), the second base (20) is provided with a limiting groove (22), and the handle part (573) moves in the limiting groove (22).

6. The foldable push-pull cart according to claim 1, wherein: articulated on first base (10) be provided with a tray (60), tray (60) can by with the horizontal position swing of first base (10) laminating to with first base (10) are the longitudinal position of 90 contained angles.

7. The foldable push-pull cart according to claim 1, wherein: the first base (10) is provided with a storage groove (12) for storing the second pull rod pipe (41) and the second pull rod handle (42).

8. The foldable push-pull cart according to claim 1, wherein: and the reinforcing rod (70) is connected with the first base (10) and the second base (20) at two ends respectively.

9. The foldable push-pull cart according to claim 8, wherein: a supporting plate (80) is arranged between the first base (10) and the second base (20).

10. The foldable push-pull cart according to claim 9, wherein: the support plate (80) comprises a plurality of base plates (81) arranged on the first tubular body (311) and/or on the reinforcing bar (70).

Images