Stair-climbing hand-pulling secondary folding luggage barrow

Abstract

The utility model discloses a stair-climbing hand-pulling secondary folding luggage barrow, relates to the technical field of luggage barrows, and aims to solve the problems of large occupied space, inconvenience in use and the like caused by linkage folding of trundles and a loading plate of an existing luggage barrow. The luggage barrow comprises a trundle folding assembly, a bottom plate, a loading plate, a pull rod and a trundle set, the trundle folding assembly is engaged and locked with a clamping block of an unlocking block through a clamping groove in a basic shaft, a spring is compressed when a lifting part of the unlocking block is pulled, the clamping block is separated from the clamping groove, and a trundle frame rotates around the basic shaft to complete folding. The trundle set can be folded independently, the loading area of the loading plate is adjusted through the side plates, and the telescopic structure is arranged in the pull rod to adapt to different heights. Secondary independent folding of the trundles and the loading plate is achieved, the occupied space is reduced after folding, operation is completed with one hand, locking is stable, and portability and practicability are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of trolley, concretely relates to a stair climbing hand pulling twice folding trolley. BACKGROUND

[0002] The trolley in prior art usually adopts the folding structure of the linkage of the loading plate and the caster, and the caster and the loading plate need to be folded simultaneously. However, when the user loads the goods, the trolley cannot fold the caster alone, and occupies a large space. If the caster is forced to fold, the loading plate will be folded, and the goods will be clamped or dumped, which is very inconvenient to use. In addition, the loading plate of the existing trolley is of fixed size and cannot be adjusted, and is easy to deviate or dump during the transportation of the loading wheeled trolley case. Therefore, a trolley capable of realizing the independent folding of the caster and the loading plate, convenient operation and wider applicability is needed to meet the needs of users for space saving and functional flexibility. SUMMARY

[0003] The utility model solves the technical problem in the prior art, and provides a stair climbing hand pulling twice folding trolley.

[0004] To achieve the purpose, the utility model adopts the following technical scheme:

[0005] A stair climbing hand pulling twice folding trolley, comprising a caster folding assembly, the caster folding assembly comprising a base shaft, a rotating member and an unlocking block;

[0006] The base shaft is provided with a base at the bottom and a ratchet at the top, and the base is provided with a clamping groove above;

[0007] The rotating member comprises a shaft sleeve and a wheel carrier, one end of the wheel carrier is integrally formed with the outer side of the shaft sleeve, and the shaft sleeve is arranged outside the base shaft between the base and the ratchet; the shaft sleeve and the wheel carrier are provided with a mounting groove, and the wheel carrier on the top of the mounting groove is provided with a spring groove and a through hole;

[0008] The unlocking block is arranged in the mounting groove, the unlocking block comprises a pulling part and a clamping part integrally formed on the side of the pulling part, the pulling part penetrates through the through hole and extends to the outside of the through hole, the clamping part is recessed with a spring groove, a spring is arranged between the spring groove on the wheel carrier and the spring groove in the clamping part, the bottom of the clamping part is protruded with a clamping block, and the clamping block can enter or move out of the clamping groove;

[0009] When the pulling part is pulled upward, the spring is compressed, the clamping block moves out of the clamping groove, and the wheel carrier and the base shaft are unlocked at this time, and the wheel carrier can rotate around the base shaft to complete the folding action.

[0010] As preferred, the luggage cart further comprises a bottom plate, a loading plate, a support, a pull rod and a set of casters, the caster folding assembly is arranged above both sides of the bottom plate, the loading plate is arranged on one side of the bottom plate and can be flipped forward, the support is installed at both ends of the top of the base shaft through the cooperation of the ratchet teeth, the pull rod is inserted into both ends of the top of the support, and the set of casters is installed at one end of the wheel frame away from the shaft sleeve.

[0011] As preferred, the bottom plate is provided with universal wheels at both ends of the bottom, and the loading plate is provided with universal wheels at both sides of the end away from the bottom plate.

[0012] As preferred, the loading plate comprises a main plate and two side plates, and the two side plates are installed on both sides of the main plate through hinges.

[0013] As preferred, the main plate is provided with a support bar above.

[0014] As preferred, the pull rod is further provided with a U-shaped telescopic rod which can be telescoped, and the U-shaped telescopic rod is provided with a handle at the middle part.

[0015] As preferred, the triangular support is connected to one end of the wheel frame away from the shaft sleeve.

[0016] The utility model discloses the beneficial effect:

[0017] The utility model discloses the unlocking block and spring cooperation in the caster folding assembly, realize the secondary independent folding of caster and loading plate. User can independently fold the caster to save the space, and the loading plate keeps the unfolded state, avoids the goods to dump, and significantly improves the use convenience. The clamping groove on the base shaft and the clamping block of the unlocking block cooperate and design, and the spring reset mechanism is combined, and the stable locking under the use and folding state is ensured, accidental unfolding is prevented, simultaneously, when needing to fold the caster, just need to pull the unlocking block upward, and the operation is simple, and the folding and unfolding action can be completed by one hand. The bottom plate and loading plate are provided with universal wheels and set up telescopic U-shaped telescopic rod, and the luggage cart is convenient for 360 degrees conversion direction and convenient for adjusting the length of pull rod, and the side plate of loading plate is unfolded or folded through the hinge, adjusts the load area, satisfies the transportation demand of goods of different sizes and wheel pull rod box. ACCURATE DRAWING

[0018] In order to easily illustrate, the utility model is described in detail by the following specific implementation and drawing.

[0019] Figure 1 It is the unfolded state structure schematic view of the caster set and loading plate of the embodiment;

[0020] Figure 2 It is the folding state structure schematic view of the caster set of the embodiment;

[0021] Figure 3 It is the caster folding assembly assembly structure schematic view of the embodiment;

[0022] Figure 4 This is a schematic diagram showing the installation of the unlocking block, base shaft, and base in this embodiment;

[0023] Figure 5 This is a schematic diagram of the base shaft and base structure in this embodiment;

[0024] Figure 6 This is a schematic diagram of the rotating component structure in this embodiment;

[0025] Figure 7 This embodiment presents a schematic diagram of the unlocking block structure.

[0026] In the picture:

[0027] 100-Cassette folding assembly; 110-Base shaft; 120-Rotating component; 121-Shaft sleeve; 122-Wheel frame; 123-Mounting slot; 124-Through hole; 130-Unlocking block; 131-Lifting part; 132-Snap-fit ​​part; 133-Snap-fit ​​block; 140-Base; 141-Snap-fit ​​groove; 150-Ratchet; 160-Spring groove; 170-Spring;

[0028] 200-Base plate; 300-Loading plate; 310-Main board; 320-Side plate; 330-Hinge; 340-Support bar; 400-Bracket; 500-Tie rod; 600-Cast set; 610-Triangular bracket; 620-Cast; 700-Swivel caster; 800-U-shaped telescopic rod; 810-Handle. Detailed Implementation

[0029] The following are specific embodiments of the present invention described in conjunction with the accompanying drawings, further illustrating the technical solution of the present invention. However, the present invention is not limited to these embodiments. Specific details such as particular configurations and components are provided in the following description merely to aid in a comprehensive understanding of the embodiments of the present invention. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.

[0030] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0031] like Figures 1-7 As shown, this embodiment provides a stair-climbing, hand-pulled, foldable luggage cart, including a caster folding assembly 100, a base plate 200, a loading plate 300, a bracket 400, a pull rod 500, and a caster assembly 600.

[0032] The caster folding assembly 100 comprises a base shaft 110, a rotating member 120 and an unlocking block 130; the bottom of the base shaft 110 is provided with a base 140, and the top is provided with a ratchet 150; the base 140 is provided with a clamping groove 141; the rotating member 120 comprises a shaft sleeve 121 and a wheel bracket 122, one end of the wheel bracket 122 is integrally formed with the outer side of the shaft sleeve 121, and the shaft sleeve 121 is sleeved outside the base shaft 110 between the base 140 and the ratchet 150; the shaft sleeve 121 and the wheel bracket 122 are provided with a mounting groove 123, and the wheel bracket 122 on the top of the mounting groove 123 is provided with a spring groove 160 and a through hole 124; the unlocking block 130 is arranged in the mounting groove 123, and the unlocking block 130 comprises a pulling part 131 and a clamping part 132 integrally formed on the side of the pulling part 131; the pulling part 131 penetrates through the through hole 124 and extends out of the through hole 124, the clamping part 132 is concave with a spring groove 160, a spring 170 is arranged between the spring groove on the wheel bracket 122 and the spring groove in the clamping part 132, the bottom of the clamping part 132 protrudes a clamping block 133, and the clamping block 133 can enter or move out of the clamping groove 141; when an upward pulling force is applied to the pulling part 131, the spring 170 is compressed, the clamping block 133 moves out of the clamping groove 141, and the wheel bracket 122 is unlocked with the base shaft 110, so that the wheel bracket 122 can rotate around the base shaft 110 to complete the folding action.

[0033] The caster folding assembly 100 is arranged on the two sides above the bottom plate 200, one side of the bottom plate 200 is provided with a loadable plate 300 which can be flipped forward, the ratchets at the two ends of the support 400 are matched and installed with the ratchets at the top of the base shaft 110, the pull rod 500 is inserted into the top of the support 400 at the two ends, and the caster set 600 is installed at the end of the wheel bracket 122 away from the shaft sleeve 121.

[0034] Universal wheels 700 are arranged at the two ends of the bottom of the bottom plate 200, and universal wheels 700 are arranged at the two sides of the end of the bottom of the loadable plate 300 away from the bottom plate 200; the loadable plate 300 comprises a main plate 310 and two side plates 320, the two side plates 320 are installed on the two sides of the main plate 310 through hinges 330; the top of the main plate 310 is provided with a supporting strip 340.

[0035] The pull rod 500 is further provided with a U-shaped telescopic rod 800 which can be telescoped, and the U-shaped telescopic rod 800 is provided with a handle 810 at the middle part.

[0036] The caster set 600 comprises a triangular support 610 and three casters 620 rotatably arranged on the triangular support 610, and the triangular support 610 is connected with the end of the wheel bracket 122 away from the shaft sleeve 121.

[0037] The folding principle of the caster group is as follows: the user pulls up the pulling part 131 of the unlocking block 130, the clamping part 132 compresses the spring 170 in the spring slot 160, and the clamping block 133 is separated from the clamping slot 141; at this time, the wheel frame 122 is unlocked and rotates 90° inward around the base shaft 110, driving the caster group 600 to fold, forming a folded state; then release the pulling part 131, the spring 170 resets and pushes the clamping part 132 downward, and the clamping block 133 reenters the clamping slot 141, ensuring the stability of the folded state. The unfolding process of the caster group is the same, and will not be repeated here.

[0038] The loading plate adjustment: the side plate 320 is unfolded through the hinge 330 to keep the same plane with the main plate 310, forming an expanded loading surface; when loading a trolley, the side plate 320 is folded inward, and the side plate 320 is above the support strip 340 to keep horizontal, the trolley body is placed above the side, and the wheels are on both sides of the main plate 310; meet the transportation needs of different goods, and have wide application range.

[0039] It is to be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, work, device, component and / or their combination.

[0040] In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "up", "down" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0041] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

Claims

1. A stair climbing hand operated two foldable trolley luggage, characterized in that, The luggage trolley comprises a caster folding assembly (100), the caster folding assembly (100) comprising a base shaft (110), a rotating member (120) and an unlocking block (130); The base shaft (110) is provided with a base (140) at the bottom and a ratchet (150) at the top, and the base (140) is provided with a clamping groove (141); The rotating member (120) comprises a shaft sleeve (121) and a wheel frame (122), one end of the wheel frame (122) is integrally formed with the outer side of the shaft sleeve (121), and the shaft sleeve (121) is sleeved on the outside of the base shaft (110) between the base (140) and the ratchet (150); the shaft sleeve (121) and the wheel frame (122) are provided with a mounting groove (123) at the joint, and the wheel frame (122) at the top of the mounting groove (123) is provided with a spring groove (160) and a through hole (124); The unlocking block (130) is arranged in the mounting groove (123), the unlocking block (130) comprises a pulling part (131) and a clamping part (132) integrally formed on the side of the pulling part (131), the pulling part (131) penetrates through the through hole (124) and extends out of the through hole (124), the clamping part (132) is concave with a spring groove (160), the spring groove (160) on the wheel frame (122) and the spring groove (160) in the clamping part (132) are provided with a spring (170), the bottom of the clamping part (132) is provided with a clamping block (133), and the clamping block (133) can enter or move out of the clamping groove (141); When an upward pulling force is applied to the pulling part (131), the spring (170) is compressed, the clamping block (133) moves out of the clamping groove (141), at this time, the wheel frame (122) is unlocked with the base shaft (110), and the wheel frame (122) can rotate around the base shaft (110) to complete the folding action.

2. The stair climbing hand propelled two-folded trolley suitcase according to claim 1, wherein, The luggage trolley further comprises a bottom plate (200), a loading plate (300), a support (400), a pull rod (500) and a caster group (600), the caster folding assembly (100) is arranged above both sides of the bottom plate (200), one side of the bottom plate (200) is provided with a loading plate (300) which can be flipped forward, the ratchets (150) at both ends of the support (400) are installed in cooperation with the ratchets (150) at the top of the base shaft (110), the pull rod (500) is inserted into the top of the support (400), and the caster group (600) is installed at one end of the wheel frame (122) away from the shaft sleeve (121).

3. The hand propelled stair climbing foldable trolley of claim 2 wherein, Universal wheels (700) are arranged at both ends of the bottom of the bottom plate (200), and universal wheels (700) are arranged at both sides of the end of the bottom of the loading plate (300) away from the bottom plate (200).

4. The hand propelled stair climbing foldable trolley of claim 2, wherein, The loading plate (300) comprises a main plate (310) and two side plates (320), and the two side plates (320) are installed on both sides of the main plate (310) through hinges (330).

5. The hand propelled stair climbing foldable trolley of claim 4 wherein, A supporting strip (340) is arranged above the main plate (310).

6. The hand propelled two-folded stair climbing trolley according to claim 2, wherein, The pull rod (500) is internally provided with a telescopic U-shaped telescopic rod (800), and the middle part of the U-shaped telescopic rod (800) is provided with a handle (810).

7. The hand propelled two-folded stair climbing trolley according to claim 2, wherein, The trolley group (600) comprises a triangular support (610) and three trolleys (620) rotatably arranged on the triangular support (610), and the triangular support (610) is connected to the end of the wheel frame (122) away from the shaft sleeve (121).

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