Wheel quick release structure and luggage barrow

Abstract

The utility model discloses a wheel quick release structure and a luggage barrow, the wheel quick release structure is applied to the barrow, the barrow comprises a vertical rod, a connecting inner hole is formed in the vertical rod, and a through hole communicated with the connecting inner hole is formed in the side wall of the vertical rod; the wheel quick-release structure comprises a fixing clamp, a connecting inner hole and a connecting rod, wherein the fixing clamp is arranged in the connecting inner hole; the fixing clamp comprises a first clamp body and a second clamp body which are rotationally connected, and the ends, away from the clamp heads, of the first clamp body and the second clamp body are each provided with a pressing and holding part extending out of the through hole. The elastic piece is connected with the first clamp body and the second clamp body and is used for keeping the two pressing parts away from each other and driving the two chucks to approach each other; the wheels are provided with connecting rods, and the connecting rods are provided with limiting parts connected with the two chucks in a matched mode; and when the two pressing parts are pressed to be relatively close to a preset position, the limiting part is disconnected from the two chucks. The elastic piece is a spring; and the hold-down part is provided with a connecting hole for connecting the two ends of the spring.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of trolley devices, in particular to a quick dismounting structure of a wheel and a luggage trolley. BACKGROUND

[0002] Users who go on business trips, travel, go hiking outdoors, go camping outdoors, etc. often need to carry some luggage items for convenience. Traditional luggage carriers have limited carrying capacity, and large luggage carriers are not only unsightly but also laborious to carry. When encountering uneven road sections, the small wheels of the luggage carriers cannot pass through large potholes, making it difficult for people to carry them. Using a handcart, which can also be called a luggage trolley, can overcome the above-mentioned problem of not being able to pass through smooth roads well, but the wheels of the luggage trolley are easily damaged after being used outdoors multiple times and passing through many rugged and complex road surfaces. Often, this is because the connection between the wheels and the frame is not designed reasonably, not only is the wheel unstable and damaged in operation, but the frame connected to the wheel is also easily damaged.

[0003] Therefore, there is an urgent need for a new wheel connection structure that not only facilitates the replacement of wheels but also ensures the stable connection and operation of the wheels and the frame. CONTENT OF THE UTILITY MODEL

[0004] The utility model mainly aims at the above problems, and provides a quick dismounting structure of a wheel and a luggage trolley, which aims to solve the technical problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides a quick dismounting structure of a wheel, which is applied to a vehicle. The vehicle includes a vertical rod, the vertical rod is internally provided with a connecting inner hole, and the side wall of the vertical rod is provided with a through hole in communication with the connecting inner hole. The quick dismounting structure of the wheel includes:

[0006] A fixing clamp is arranged in the connecting inner hole. The fixing clamp includes a first clamp body and a second clamp body which are rotationally connected. The first clamp body and the second clamp body are both provided with a pressing part which protrudes out of the through hole at the end away from the clamp head.

[0007] An elastic member is connected to the first clamp body and the second clamp body, and is used for keeping the two pressing parts away from each other and driving the two clamp heads to be close to each other.

[0008] A wheel is provided with a connecting rod, and the connecting rod is provided with a limiting part matched with the two clamp heads. When the two pressing parts are pressed to be close to each other to a predetermined position, the limiting part is disconnected from the two clamp heads.

[0009] Further, a supporting sleeve is arranged in the connecting inner hole. The supporting sleeve includes a first connecting part connected with the vertical rod and a second connecting part rotationally connected with the first clamp body and the second clamp body.

[0010] Further, the limiting part is an annular groove arranged at the end of the connecting rod, and the clamping head is provided with a clamping block which can be inserted into the annular groove.

[0011] Further, the supporting sleeve is provided with a third connecting part extending out of the connecting inner hole, the sleeve cover plate is connected with the third connecting part and encloses the bearing, and the outer ring of the bearing is fixedly connected.

[0012] Further, the elastic member is a spring, and the pressing part is provided with a connecting hole connecting two ends of the spring.

[0013] A luggage trolley comprising the wheel quick-release structure as described above, and further comprising a connecting member, a frame and a chassis, wherein the frame and the chassis are connected through the connecting member, the vertical rod is arranged on the frame or the chassis, and the frame and the chassis enclose a storage space.

[0014] Further, the trolley further comprises a mop, wherein the mop is rotatably connected with any one of the connecting member, the frame and the chassis, and a torsional spring is arranged at the rotatable connection, and the mop is telescopically adjustable along its length direction.

[0015] The mop comprises a handle, an adjusting member, a telescopic rod and a connecting frame, two ends of the telescopic rod are respectively connected with the handle and the connecting frame, the connecting frame is rotatably connected with any one of the connecting member, the frame and the chassis, and a torsional spring is arranged at the rotatable connection, the telescopic rod comprises at least two telescopic sections which are telescopically connected, a limiting sleeve is arranged between the telescopic sections, at least two positioning holes are arranged on the side wall of the telescopic section, the adjusting member comprises a mounting cover connected with the outer wall of the telescopic section, an adjusting pin which extends out of the mounting cover, and a spring arranged in the mounting cover and connected with the adjusting pin, and the spring is used for keeping the adjusting pin inserted into the positioning hole.

[0016] Further, the trolley further comprises a conversion accessory, wherein the conversion accessory is any one of a table board set, a top cover and a luggage fixing member, and the upper end of the frame is provided with a mounting part, and the conversion accessory is detachably connected with the mounting part.

[0017] Further, the vertical rod is arranged on the frame, the frame comprises a luggage bag and a cross rod connected with the vertical rod, the luggage bag encloses the frame structure formed by the vertical rod and the cross rod and covers the chassis, and the luggage bag comprises a luggage bag main body, a side wall and a bottom wall, the luggage bag main body is provided with a detachable connecting member, and the side wall and the bottom wall of the luggage bag are detachably connected with the luggage bag main body through the detachable connecting member.

[0018] Further, the chassis is telescopically adjustable along its length and / or width direction.

[0019] Further, the extension tail plate is rotatably connected with the connecting piece, the frame and the chassis, and the rotation angle of the extension tail plate relative to the frame is adjusted by the limiting holder.

[0020] Further, a side bag is connected with the frame and / or the extension tail plate.

[0021] Further, the table board set comprises a height increasing rod connected with the mounting part, an extension rod connected with the height increasing rod, a floor support connected with the extension tail plate, and a table board mounted on the upper end of the extension rod.

[0022] Further, a fastener is arranged on any one of the frame, the luggage bag and the extension tail plate, and the extension tail plate is kept against the frame by the fastener when the extension tail plate is against the frame.

[0023] Further, the chassis comprises a front disc holder, a rear disc holder and a moving support, the moving support is mounted on the front disc holder, the front disc holder is provided with a receiving tube adjacent to one end of the rear disc holder, the rear disc holder is provided with a plug-in tube extending into the hole of the receiving tube and slidably connected with the receiving tube, the receiving tube is slidably connected with the moving support, the plug-in tube is connected with the rear disc holder by a plug-in tube fixing piece, the receiving tube and the plug-in tube are provided with at least two limiting holes along the length direction thereof, the hole of the plug-in tube is provided with an elastic fixing pin, and when the plug-in tube moves relative to the receiving tube and the limiting holes of the two are aligned, the elastic fixing pin extends out of the limiting hole to fix the plug-in tube and the receiving tube.

[0024] Further, the two ends of the chassis are rotatably connected with the connecting piece, the chassis is provided with a folding support, a fixing frame and a connecting pin, the end of the receiving tube away from the plug-in tube is detachably connected with the fixing frame by the connecting pin, the fixing frame is connected with the folding support, the folding support is rotatably connected with the front disc holder, and when the rear disc holder and the front disc holder are unfolded relative to each other, the folding support prevents the folding support from continuing to rotate relative to the front disc holder in the direction of concave downward to the rotation connection position, the end of the rear disc holder adjacent to the front disc holder is provided with a dismounting hole, and the folding support is provided with a combination hole corresponding to the dismounting hole, and when the rear disc holder and the front disc holder are folded by the folding support, the connecting pin of the receiving tube and the fixing frame is pulled out, and the dismounting hole and the combination hole are plugged in by the connecting pin.

[0025] Further, a folding limiting device is arranged, the chassis comprises a front disc holder and a rear disc holder, the frame body structure is divided into a front frame body and a rear frame body corresponding to the front disc holder and the rear disc holder, the front frame body is connected with the front disc holder by the folding limiting device, and the rear frame body is connected with the rear disc holder by the folding limiting device.

[0026] Compared with the prior art, the quick dismounting structure and the luggage cart provided by the utility model can install, replace and maintain the wheels without additional tools, are convenient and fast, and can fully stabilize the wheels, balance stress, avoid damaging the connection between the wheels and the vertical rod, and prolong the service life. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a luggage cart structure schematic diagram of the application.

[0028] Figure 2 It is a structure schematic diagram of the application after removing part of the side wall of the luggage cart.

[0029] Figure 3 It is a structure schematic diagram of the application after removing part of the side wall of the luggage cart. Figure 2 It is a structure schematic diagram of the application after removing part of the side wall of the luggage cart.

[0030] Figure 4 It is a structure schematic diagram of the application after removing part of the side wall of the luggage cart. Figure 1 It is a structure schematic diagram of the application after removing part of the side wall of the luggage cart.

[0031] Figure 5 It is a structure schematic diagram of the application after removing part of the side wall of the luggage cart.

[0032] Figure 6 It is a structure schematic diagram of the application after removing part of the side wall of the luggage cart. Figure 3 It is a structure schematic diagram of the application after removing part of the side wall of the luggage cart.

[0033] Figure 7 It is a structure schematic diagram of the application after removing part of the side wall of the luggage cart.

[0034] Figure 8 It is a structure schematic diagram of the application after removing part of the side wall of the luggage cart.

[0035] Figure 9 It is a structure schematic diagram of the application after removing part of the side wall of the luggage cart.

[0036] Figure 10 It is a structure schematic diagram of the application after removing part of the side wall of the luggage cart.

[0037] Figure 11 It is a structure schematic diagram of the application after removing part of the side wall of the luggage cart.

[0038] Figure 12 It is a structure schematic diagram of the application after removing part of the side wall of the luggage cart.

[0039] Figure 13 It is a structure schematic diagram of the application after removing part of the side wall of the luggage cart.

[0040] Figure 14A partial component structure exploded view of a wheel quick release structure of the present application.

[0041] Figure 15 A partial component structure exploded view of a mop structure of the present application.

[0042] Figure 16 A connection component structure view of the present application.

[0043] The reference signs shown in the figure: 1, connection component; 110, alignment hole; 2, frame; 210, vertical rod; 211, connection inner hole; 212, through hole; 220, mounting portion; 230, luggage bag; 231, luggage bag body; 2311, detachable connection component; 232, side wall; 233, bottom wall; 240, cross rod; 3, bottom plate; 310, rear plate frame; 311, insertion pipe; 315, limiting hole; 316, elastic fixing pin; 320, front plate frame; 321, accommodation pipe; 322, dismounting hole; 330, folding support; 331, combined hole; 340, fixing frame; 350, connection insertion pin; 360, linear bearing; 370, moving support; 380, insertion pipe fixing component; 4, fixing clamp; 410, first clamp body; 415, pressing portion; 4151, connection hole; 416, clamp head; 417, clamping block; 420, second clamp body; 5, elastic component; 6, wheel; 610, connecting rod; 620, limiting portion; 7, support sleeve; 710, first connecting portion; 720, second connecting portion; 730, third connecting portion; 740, alignment block; 8, sleeve cover plate; 9, bearing; 910, bearing gasket; 10, mop; 1010, handle; 1021, mounting cover; 1022, adjustment insertion pin; 1023, spring; 1030, telescopic section; 1031, positioning hole; 1040, connecting frame; 1050, limiting sleeve; 11, torsion spring; 1210, height increasing rod; 1220, extension rod; 1230, floor support; 1240, tabletop plate; 13, top cover; 14, luggage fixing component; 15, extended tail plate; 16, limiting retaining component; 17, side bag; 18, fastening component; 19, folding limiting component. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application. It can be understood that the drawings are only provided for reference and illustration, and are not used to limit the present application. The connection relationship shown in the drawings is only for clear description, and does not limit the connection mode.

[0045] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or a middle component can exist at the same time. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. It should also be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The terms used in the specification of the utility model herein are only for the purpose of describing the specific embodiments, and are not intended to limit the utility model.

[0046] It should also be noted that in the description of the utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not intended to 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 limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0047] Please refer to Figure 1 - Figure 15 The embodiment provides a quick release structure of a wheel, which is applied to a vehicle, the vehicle comprises a vertical rod 210, the vertical rod 210 is internally provided with a connecting inner hole 211, and the side wall of the vertical rod 210 is provided with a through hole 212 in communication with the connecting inner hole 211; the quick release structure of the wheel comprises:

[0048] A fixing clamp 4 is arranged in the connecting inner hole 211; the fixing clamp 4 comprises a first clamp body 410 and a second clamp body 420 which are rotationally connected, and the first clamp body 410 and the second clamp body 420 are both provided with a pressing part 415 protruding out of the through hole 212 at an end away from a clamp head 416 thereof;

[0049] An elastic member 5 is connected between the first clamp body 410 and the second clamp body 420, and is used for keeping the two pressing parts 415 away from each other and driving the two clamp heads 416 to be close to each other;

[0050] The wheel 6 is provided with a connecting rod 610, which is provided with a limiting part 620 matched with the two clamping heads 416; when the two pressing parts 415 are pressed to be relatively close to the predetermined position, the limiting part 620 is disconnected with the two clamping heads 416.

[0051] In some embodiments, the first clamping body 410 and the second clamping body 420 of the fixing clamp 4 are rotationally connected through a rotating shaft (not shown), and the rotating shaft penetrates the stand rod 210, so that the fixing clamp 4 is fixed relative to the stand rod 210 in one degree of freedom. The first clamping body 410 and the second clamping body 420 can be a cross hinged structure or a non-cross rotational connection structure as shown.

[0052] When the wheel 6 needs to be replaced, the user can simultaneously operate the pressing parts 415 of the first clamping body 410 and the second clamping body 420 to overcome the elastic force of the elastic member 5, so that the first clamping body 410 and the second clamping body 420 are relatively rotated, the two pressing parts 415 are relatively close, the two clamping heads 416 are relatively far away, and the limiting part 620 is disconnected with the two clamping heads 416, so that the connecting rod 610 can be pulled out of the connecting inner hole 211.

[0053] When the wheel 6 needs to be connected with the stand rod 210, the user can simultaneously operate the pressing parts 415 of the first clamping body 410 and the second clamping body 420 to overcome the elastic force of the elastic member 5, so that the first clamping body 410 and the second clamping body 420 are relatively rotated, the two pressing parts 415 are relatively close, the two clamping heads 416 are relatively far away and expanded, the space of the two clamping heads 416 is convenient for the connecting rod 610 to be inserted into the connecting inner hole 211, the limiting part 620 is located between the two clamping heads 416, the pressing parts 415 are relatively far away after the pressing is released, the two clamping heads 416 are relatively close under the elastic force of the elastic member 5, the limiting part 620 is firmly clamped, and the wheel 6 is prevented from being separated from the stand rod 210.

[0054] Through the quick disassembly structure, the user can install, replace and maintain the wheel 6 without additional tools, which is convenient and fast. The wheel 6 is connected with the stand rod 210 through the fixing clamp 4 and the elastic member 5, is fully stable, is balanced in force, avoids damaging the connection between the stand rod 210 and the wheel 6, and prolongs the service life.

[0055] Please refer to Figure 12 - Figure 14 , including a supporting sleeve 7 provided in the connecting inner hole 211, and the supporting sleeve 7 includes a first connecting part 710 connected with the stand rod 210 and a second connecting part 720 rotationally connected with the first clamping body 410 and the second clamping body 420.

[0056] The support sleeve 7 is generally a hollow cylindrical structure with a certain wall thickness. The connecting rod 610 first passes through the inner hole of the support sleeve 7, and the limiting part 620 is then connected to the two clamps 416.

[0057] In some embodiments, the first connecting part 710 is a threaded hole, and the upright 210 is provided with a through hole corresponding to the threaded hole. A screw passes through the through hole and the threaded hole to secure the support sleeve 7 to the upright 210. The second connecting part 720 is a rotating hole structure. Both the first clamp 410 and the second clamp 420 are provided with a rotating shaft that is rotatably connected to the rotating hole. Thus, any bumps or vibrations from the wheel 6 during operation are first transmitted to the support sleeve 7, which in turn reinforces the upright 210. Furthermore, it is connected to the separate first clamp 410 and second clamp 420 as a single unit, serving multiple purposes and demonstrating ingenious design.

[0058] Please refer to Figure 12 - Figure 14 The limiting part 620 is an annular groove provided at the end of the connecting rod 610, and the clamp 416 is provided with a locking block 417 that can be inserted into the annular groove;

[0059] After the limiting part 620 is inserted into the support sleeve 7, the locking block 417 will lock the limiting part 620, and there will be a certain gap between the two. The limiting part 620 will rotate with the wheel 6. After the locking block 417 reaches a certain wear life, the locking block 417 parts will be replaced.

[0060] The locking block 417 is matched with an annular groove. It is a block with an arc surface, which is fully stable and has a balanced force, avoiding damage to the connection between the upright 210 and the wheel 6, and improving service life.

[0061] Please refer to Figure 12 - Figure 14 It includes a sleeve cover plate 8 and a bearing 9; the support sleeve 7 is provided with a third connecting part 730 extending out of the connecting inner hole 211; the sleeve cover plate 8 is connected to the third connecting part 730 and surrounds the bearing 9, fixing the outer ring of the bearing 9; the connecting rod 610 passes through the inner hole of the bearing 9.

[0062] In some embodiments, the third connecting part 730 is a barb structure, and the sleeve cover plate 8 is provided with a buckle hole that matches the barb structure. The sleeve cover plate 8 is engaged with the support sleeve 7.

[0063] Please refer to Figure 13 , Figure 16 Preferably, the support sleeve 7 is provided with an alignment block 740 near the third connecting part 730, and the connector 1 is provided with an alignment hole 110 structure corresponding to the alignment block 740, so that when the support sleeve 7 and the fixing clamp 4 are integrally installed into the connecting inner hole 211, the pressing part 415 of the first clamp 410 and the second clamp 420 can be smoothly aligned and extended out of the through hole 212.

[0064] The sleeve cover plate 8 is mainly used to fix the bearing 9 to the end of the support sleeve 7, through the bearing 9, so that the wheel 6 can rotate stably relative to the vertical rod 210.

[0065] When the bearing 9 is a simplified bearing structure composed of only a ball tray and balls, a bearing pad 910 also needs to be used.

[0066] Please refer to Figure 12 - Figure 14 The elastic member 5 is a spring; the pressing part 415 is provided with a connecting hole 4151 connecting both ends of the spring.

[0067] This structure is stable for spring connection.

[0068] Please refer to Figure 1 - Figure 16 A luggage trolley, comprising a wheel quick release structure as described above; further comprising a connecting piece 1, a frame 2, a chassis 3; the frame 2 and the chassis 3 are connected through the connecting piece 1; the vertical rod 210 is arranged on the frame 2 or the chassis 3; the frame 2 and the chassis 3 enclose a storage space.

[0069] The luggage trolley using the wheel quick release structure described above naturally also has the advantages of the wheel quick release structure.

[0070] The chassis 3 is mainly used to support the bottom of the items in the storage space, and the frame 2 corresponds to the outer periphery of the items. When the frame 2 is connected to the top cover 13, the storage space is a closed cavity.

[0071] Please refer to Figure 1 and Figure 15 Comprising a mop 10; the mop 10 is rotatably connected with any one of the connecting piece 1, the frame 2, and the chassis 3, and a torsional spring 11 is arranged at the rotatable connection; the mop 10 can be telescopically adjusted along its length direction.

[0072] The mop 10 comprises a handle 1010, an adjusting member, a telescopic rod, a connecting frame 1040, the telescopic rod is connected with the handle 1010 and the connecting frame 1040 at two ends respectively, the connecting frame 1040 is rotationally connected with any one of the connecting member 1, the frame 2 and the chassis 3, and a torsional spring 11 is arranged at the rotationally connected position, the telescopic rod comprises at least two telescopic sections 1030 which are connected in a sleeved and sliding mode, a limiting sleeve 1050 is arranged between the telescopic sections 1030, at least two positioning holes 1031 are arranged on the side wall of the telescopic section 1030, the adjusting member comprises a mounting cover 1021 connected with the outer wall of the telescopic section 1030, an adjusting pin 1022 which is arranged on one end of the mounting cover 1021 and extends out of the mounting cover 1021, and a spring 1023 arranged in the mounting cover 1021 and connected with the adjusting pin 1022, the spring 1023 is used for keeping the adjusting pin 1022 inserted into the positioning hole 1031.

[0073] In some embodiments, the number of adjusting members is two, and the adjusting member is connected with the telescopic section 1030 having the largest outer diameter. When the length of the mop 10 needs to be adjusted, the adjusting pin 1022 is operated to pull out away from the positioning hole 1031, the telescopic section 1030 is slid relative to the telescopic section 1030, the length of the mop 10 is adjusted, the telescopic section 1030 and the telescopic section 1030 are aligned, the adjusting pin 1022 is released, and the adjusting pin 1022 is kept inserted into the positioning hole 1031 under the elastic force of the spring 1023, so that the telescopic section 1030 and the telescopic section 1030 do not slide relative to each other.

[0074] The limiting sleeve 1050 is used for limiting the telescopic section 1030 from moving relative to the telescopic section 1030 to the limit position and being disengaged. The mounting cover 1021 is a split structure, two half shells are fixed by screws, and the adjusting pin 1022 is aligned with the positioning hole 1031. The telescopic section 1030 connected with the connecting frame 1040 is also provided with the limiting sleeve 1050.

[0075] The torsional spring 11 is used for keeping the mop 10 at a certain angle relative to the chassis 3, the mop 10 can be rotated, has flexibility, and can provide a buffering function for inertia when a user operates the trolley, thereby improving the user experience.

[0076] The telescopic adjusting function structure of the mop 10 can be realized by using the prior art.

[0077] Please refer to Figure 1 , Figure 7 and Figure 9 , which comprise a change type accessory, the change type accessory is any one of a table board kit, a top cover 13 and a luggage fixing member 14, and the change type accessory is detachably connected with the mounting portion 220 arranged on the upper end of the frame 2.

[0078] In some embodiments, the luggage fastener 14 is a spanner screw, also known as a hand screw, and the mounting portion 220 can be provided at the end of the vertical rod 210 away from the wheel 6. The mounting portion 220 is preferably a threaded hole that can be connected with a bolt for expansion.

[0079] The luggage bag body 231 is provided with a mounting hole corresponding to the mounting portion 220. The luggage bag 230 is fixed to the frame 2 by passing the luggage fastener 14 through the mounting hole and the mounting portion 220.

[0080] The table board kit, as the name implies, can make the luggage trolley become a table by matching the table board kit, which is convenient for users to use outdoors and can reduce the need to carry a dedicated table, thereby improving the user experience.

[0081] In some embodiments, the top cover 13 is a rectangular cloth with a rollable structure, which is convenient for storage when the top cover 13 is not needed.

[0082] Please refer to Figure 1 - Figure 6 The vertical rod 210 is provided on the frame 2, and the connecting piece 1 also sleeves the outer wall of the vertical rod 210. The frame 2 includes a luggage bag 230 and a cross rod 240 connected to the vertical rod 210. The luggage bag 230 encloses the frame structure formed by the vertical rod 210 and the cross rod 240 and covers the chassis 3. The luggage bag 230 includes a luggage bag body 231, a side wall 232, and a bottom wall 233. The luggage bag body 231 is provided with a detachable connecting piece 2311. The side wall 232 and the bottom wall 233 of the luggage bag 230 are detachably connected to the luggage bag body 231 through the detachable connecting piece 2311.

[0083] In some embodiments, the luggage bag 230 is made of cloth. The detachable connecting piece 2311 is a zipper, and the side wall 232 and the bottom wall 233 are also provided with corresponding zipper structures for detachable connection. In addition, the zipper is surrounded by a magic tape connecting plate. Each time the zipper is operated, the magic tape connecting plate can be lifted first, and then the zipper can be pulled to prevent the zipper from being opened by mistake and to protect the zipper.

[0084] In addition to the above-mentioned luggage fastener 14, the outer wall of the luggage bag 230 can also be provided with a binding rope and a magic tape structure to connect with the frame 2 and the chassis 3.

[0085] The chassis 3 can be telescopic and adjustable in the length and / or width direction.

[0086] Please refer to Figure 2 and Figure 3, including an extended tail plate 15, a limit retaining member 16; the extended tail plate 15 is rotatably connected with the connecting member 1, the frame 2, the chassis 3; the limit retaining member 16 is used to adjust the rotation angle of the extended tail plate 15 relative to the frame 2.

[0087] The length of the luggage cart can be extended by the extended tail plate 15, and the storage space can be expanded. Preferably, when the extended tail plate 15 is rotated to be parallel to the chassis 3, the limit retaining member 16 prevents the extended tail plate 15 from continuing to rotate relative to the frame 2. The limit retaining member 16 can also be used to incline the extended tail plate 15 at a desired angle relative to the chassis 3 and maintain the angle.

[0088] When the extended tail plate 15 is used, the corresponding side wall 232 can be removed by the detachable connecting member 2311, so that the load bearing area of the extended tail plate 15 is in communication with the load bearing area of the chassis 3.

[0089] In some embodiments, the extended tail plate 15 is connected with the connecting member 1, and the mop 10 is connected with the connecting member 1. The extended tail plate 15 and the mop 10 are symmetrically distributed at the front and rear ends of the luggage cart, respectively, so that the connecting member 1 on the front and rear sides can adopt a unified structure, and different structures of the connecting member 1 do not need to be designed and manufactured separately.

[0090] Please refer to Figure 2 - Figure 4 , including a side bag 17 connected to the outside of the frame 2 and / or the extended tail plate 15.

[0091] Please refer to Figure 7 , the table board set includes a height increasing rod 1210 connected with the mounting portion 220, an extension rod 1220 connected with the height increasing rod 1210, a floor stand 1230 connected with the extended tail plate 15, and a table board 1240 mounted on the upper end of the extension rod 1220.

[0092] The frame structure composed of these rods supports the table board 1240, so that the luggage cart has the function of a table, is multi-purpose, and improves the user experience.

[0093] Please refer to Figure 3 , including a fastener 18 arranged at any one of the frame 2, the luggage bag 230, and the extended tail plate 15; when the extended tail plate 15 abuts against the frame 2, the fastener 18 is used to keep the extended tail plate 15 abutting against the frame 2.

[0094] In some embodiments, the fastener 18 can be any one of a binding rope, a magic tape, and a zipper.

[0095] Please refer to Figure 5 and Figure 6 、 Figure 8, the chassis 3 comprises a rear disc frame 310, a front disc frame 320, a moving bracket 370; the moving bracket 370 is installed on the rear disc frame 310; the front disc frame 320 is provided with a receiving tube 321 at one end adjacent to the rear disc frame 310, and the rear disc frame 310 is provided with a plug-in tube 311 which extends into the hole of the receiving tube 321 and is in sliding connection with the receiving tube 321; the plug-in tube 311 is connected with the rear disc frame 310 through a plug-in tube fixing member 380; the receiving tube 321 and the plug-in tube 311 are provided with at least two limiting holes 315 along the length direction thereof; the hole of the plug-in tube 311 is provided with an elastic fixing pin 316; when the plug-in tube 311 moves relative to the receiving tube 321 and the limiting holes 315 of the two are aligned, the elastic fixing pin 316 extends out of the limiting hole 315 to fix the plug-in tube 311 and the receiving tube 321. The receiving tube 321 and the moving bracket 370 are in sliding connection through a linear bearing 360.

[0096] In some embodiments, the receiving tube 321 and the plug-in tube 311 are in sliding connection through the moving bracket 370. The plug-in tube fixing member 380 is a three-way pipe connector structure.

[0097] When the area of the chassis 3 is adjusted through such an extension structure, the corresponding side wall 232 and bottom wall 233 of the luggage bag 230 can also be replaced and adapted.

[0098] When the plug-in tube 311 is in a fixed relationship with the receiving tube 321, and the extension amount of the chassis 3 needs to be adjusted again, the elastic fixing pin 316 can be pressed manually to cancel the extension of the limiting hole 315, and without the elastic button on the elastic fixing pin 316 blocking, the plug-in tube 311 can slide relative to the receiving tube 321 for adjustment until the limiting holes 315 of the two are aligned again.

[0099] Please refer to Figure 5 and Figure 6 、 Figure 8 and Figure 10, the bottom disc 3 is rotatably connected with the connecting piece 1 at both ends; the bottom disc 3 is provided with a folding support 330, a fixing frame 340 and a connecting bolt 350; the accommodation tube 321 is detachably connected with the fixing frame 340 at an end away from the plug-in tube 311 through the connecting bolt 350; the fixing frame 340 is connected with the folding support 330; the folding support 330 is rotatably connected with the front disc frame 320, and when the rear disc frame 310 and the front disc frame 320 are flatly arranged opposite to each other, the folding support 330 prevents the folding support 330 from continuously rotating to the direction of being concave to the rotating connection position relative to the front disc frame 320; one end of the rear disc frame 310 adjacent to the front disc frame 320 is provided with a dismounting hole 322, and the folding support 330 is provided with a combination hole 331 corresponding to the dismounting hole 322; when the rear disc frame 310 and the front disc frame 320 are folded through the folding support 330, the connecting bolt 350 connecting the accommodation tube 321 and the fixing frame 340 is pulled out, and the dismounting hole 322 and the combination hole 331 are plugged in through the connecting bolt 350.

[0100] In some embodiments, when the rear disc frame 310 and the front disc frame 320 are relatively close to the shortest distance, the connecting bolt 350 is connected with the dismounting hole 322 and the folding support 330. When the area of the bottom disc 3 is expanded for use, the accommodation tube 321 is connected with the fixing frame 340 through the connecting bolt 350. When the connecting bolt 350 at this position is pulled out, the rear disc frame 310 and the front disc frame 320 are in a split structure. Then the accommodation tube 321 is pushed away from the front disc frame 320, the accommodation tube 321 is sleeved with the plug-in tube 311 for storage, the folding support 330 is rotated to a suitable angle relative to the front disc frame 320, the rear disc frame 310 is rotatably folded through the rear frame body connected with the connecting piece 1, the front disc frame 320 is rotatably folded through the front frame body connected with the connecting piece 1, and the dismounting hole 322 and the combination hole 331 are plugged in through the connecting bolt 350, so that the rear disc frame 310 and the front disc frame 320 are restored to be connected, forming a folding integrated luggage cart.

[0101] Please refer to Figure 3 and Figure 11 , the bottom disc 3 comprises a front disc frame 320 and a rear disc frame 310; the frame body structure of the frame 2 is divided into a front frame body and a rear frame body corresponding to the front disc frame 320 and the rear disc frame 310; the front frame body is connected with the front disc frame 320 through the folding and unfolding limiter 19; the rear frame body is connected with the rear disc frame 310 through the folding and unfolding limiter 19.

[0102] In some embodiments, the folding and unfolding limiter 19 is a limiting folding hinge, which is used to limit the unfolding angle of the frame 2 relative to the bottom disc 3, and it is appropriate that the front frame body is perpendicular to the front disc frame 320 and the rear frame body is perpendicular to the rear disc frame 310.

[0103] In some embodiments, the luggage trolley has four wheels 6 in total, two wheels in each group, and the wheels 6 in the group located at the rear disc frame 310 are directional wheels, and the wheels 6 in the group located at the front disc frame 320 are universal wheels.

[0104] In summary, the technical scheme of the luggage trolley provided by the utility model can carry goods, and the carrying capacity is multiple times of that of a traditional luggage case, and the luggage trolley can also expand into a camping dining car combined with a table plate, greatly facilitating people on business trips and tourists.

[0105] In the specification and claims of the present application, the words "comprise / comprising" and the words "have / having" and their conjugates, are used to specify the presence of stated features, integers, steps or components but do not preclude the presence or addition of one or more other features, integers, steps, components, or groups thereof.

[0106] Some features of the utility model are described in different embodiments for clarity, however, these features can also be combined in a single embodiment. Conversely, some features of the utility model are described in a single embodiment for brevity, however, these features can also be described individually or in any suitable combination in different embodiments.

[0107] The above description is only the preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A quick release structure of a vehicle wheel, characterized by comprising: The application is applied to a vehicle, which comprises a vertical rod, a connecting hole arranged in the vertical rod, and a through hole arranged in the side wall of the vertical rod and communicated with the connecting hole; the quick release structure of the vehicle wheel comprises: a fixing clamp arranged in the connecting hole; the fixing clamp comprises a first clamp body and a second clamp body connected by rotation, and the first clamp body and the second clamp body are provided with pressing parts extending out of the through hole at the ends away from the clamp heads; an elastic member connected with the first clamp body and the second clamp body, used for keeping the two pressing parts away from each other and driving the two clamp heads to be close to each other; a vehicle wheel provided with a connecting rod, and the connecting rod is provided with a limiting part matched with the two clamp heads; when the two pressing parts are pressed to be close to each other to a predetermined position, the limiting part is disconnected with the two clamp heads.

2. The quick release wheel structure according to claim 1, wherein a support sleeve arranged in the connecting hole, and the support sleeve comprises a first connecting part connected with the vertical rod and a second connecting part connected with the first clamp body and the second clamp body by rotation.

3. The quick release wheel structure according to claim 1, wherein the limiting part is an annular groove arranged at the end of the connecting rod, and the clamp head is provided with a clamping block capable of being inserted into the annular groove.

4. The quick release wheel structure according to claim 2, wherein a sleeve cover plate and a bearing; the support sleeve is provided with a third connecting part extending out of the connecting hole; the sleeve cover plate is connected with the third connecting part and surrounds the bearing, and the bearing outer ring is fixedly connected with the third connecting part; the connecting rod passes through the inner hole of the bearing.

5. A trolley characterized by the quick release structure of the vehicle wheel according to any one of claims 1 to 4; further comprising a connecting member, a vehicle frame and a chassis; the vehicle frame and the chassis are connected through the connecting member; the vertical rod is arranged on the vehicle frame or the chassis; the vehicle frame and the chassis surround a storage space.

6. The trolley according to claim 5, wherein a mop; the mop comprises a handle, an adjusting member, a telescopic rod, and a connecting frame; the two ends of the telescopic rod are connected with the handle and the connecting frame respectively; the connecting frame is rotatably connected with any one of the connecting member, the vehicle frame and the chassis, and a torsional spring is arranged at the rotatable connection position; the telescopic rod comprises at least two telescopic sections connected by sleeving and sliding; a limiting sleeve is arranged between the telescopic sections; at least two positioning holes are arranged in the side wall of the telescopic section; the adjusting member comprises a mounting cover connected with the outer wall of the telescopic section, an adjusting plug extending out of the mounting cover, and a spring arranged in the mounting cover and connected with the adjusting plug; the spring is used for keeping the adjusting plug inserted into the positioning hole.

7. The trolley according to claim 5, wherein a conversion accessory, which is any one of a table plate set, a top cover and a luggage fixing member; an installation part is arranged at the upper end of the vehicle frame, and the conversion accessory is detachably connected with the installation part.

8. The trolley according to claim 5, wherein the vertical rod is arranged on the vehicle frame; the vehicle frame comprises a luggage bag and a cross rod connected with the vertical rod; the luggage bag surrounds the frame structure formed by the vertical rod and the cross rod and covers the chassis; the luggage bag comprises a luggage bag main body, a side wall and a bottom wall; the luggage bag main body is provided with a detachable connecting member; the side wall and the bottom wall of the luggage bag are detachably connected with the luggage bag main body through the detachable connecting member.

9. The trolley case of claim 5, wherein, an extended tail plate and a limiting retaining member; the extended tail plate is rotatably connected with any one of the connecting member, the vehicle frame and the chassis; the rotating angle of the extended tail plate relative to the vehicle frame is adjusted through the limiting retaining member. The fastener is arranged on the frame, the luggage bag or the extension tail plate, and the extension tail plate is kept against the frame by the fastener when the extension tail plate is against the frame. The bottom disc comprises a front disc holder and a rear disc holder, and the frame body structure is divided into a front frame body and a rear frame body corresponding to the front disc holder and the rear disc holder.

10. The trolley case of claim 5, wherein, The bottom disc comprises a front disc holder, a rear disc holder and a moving support, the moving support is arranged on the front disc holder, the front disc holder is provided with a receiving tube adjacent to one end of the rear disc holder, the rear disc holder is provided with a plug-in tube which extends into the receiving tube and is in sliding connection with the receiving tube, the receiving tube is in sliding connection with the moving support, the plug-in tube is connected with the rear disc holder through plug-in tube fixing members, the receiving tube and the plug-in tube are provided with at least two limiting holes along their length directions, the plug-in tube is provided with an elastic fixing pin, and when the plug-in tube moves relative to the receiving tube and the limiting holes of the two are aligned, the elastic fixing pin extends out of the limiting hole to fix the plug-in tube and the receiving tube.

11. The trolley according to claim 10, characterized in that The bottom disc is in rotational connection with the connecting member at both ends, the bottom disc is provided with a folding support, a fixing frame and a connecting pin, the end of the receiving tube away from the plug-in tube is detachably connected with the fixing frame through the connecting pin, the fixing frame is connected with the folding support, the folding support is in rotational connection with the front disc holder, and when the rear disc holder and the front disc holder are unfolded relative to each other, the folding support prevents the folding support from continuing to rotate relative to the front disc holder in the direction of concave downward to the rotational connection position, one end of the rear disc holder adjacent to the front disc holder is provided with a dismounting hole, the folding support is provided with a combined hole corresponding to the dismounting hole, and when the rear disc holder and the front disc holder are folded through the folding support, the connecting pin of the receiving tube and the fixing frame is pulled out, and the dismounting hole and the combined hole are plugged in through the connecting pin.

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