WO2009127093A1

WO2009127093A1 - A new luggage trolley

Info

Publication number: WO2009127093A1
Application number: PCT/CN2008/001616
Authority: WO
Inventors: 邓建文; 陈金喜; 黄运旬
Original assignee: Deng Jianwen; Chen Jinxi; Huang Yunxun
Priority date: 2008-04-14
Filing date: 2008-09-16
Publication date: 2009-10-22
Also published as: CN201276139Y; CN101559780B; CN101559780A

Abstract

A luggage trolley includes a carrying frame (1), a handle (2), wheels (3), bars (11), transmission tubes (5), rotation kits (4), free bearings (7) and so on. While folding the handle (2), the wheels (3) are made simultaneously collapsed towards the frame (1) by the free bearings (7), the transmission tubes (5) and the rotation kits (4).

Description

A new type of luggage cart

The present invention relates to the field of handling equipment manufacturing, and more particularly to a new type of luggage cart that can automatically fold a caster.

Oh no

The existing hand luggage carts are composed of pushers, brackets and casters. The casters are mounted under the brackets. The pushers are mounted on the brackets and are flush with the waist of the person. The structure is relatively simple, generally large in size and inconvenient to carry. In some folding hand-carrying luggage carts, only the pusher is folded into the side of the bracket. When the pusher is folded into the bracket, the caster cannot be folded into the bracket at the same time, and the volume cannot be minimized. In addition, there is also a gear transmission to fold the pusher into the bracket side, the caster is simultaneously folded into the bracket, but the structure is driven by the mutually perpendicular teeth, so after the opening, the pusher will shake back and forth or left and right. , the teeth can not be reliably engaged, and the teeth are also easily damaged.

Summary of the invention

SUMMARY OF THE INVENTION The object of the present invention is to overcome the above-mentioned shortcomings of the prior art and to provide a new type of traveling vehicle which has a simpler structure, more stable and reliable transmission, and also folds the caster at the same time to the bottom of the bracket while folding the pusher.

The invention can be implemented by the following scheme:

A new type of luggage cart includes a carrier bracket for carrying articles and a pusher connected by a hinge joint and foldable on the carrier bracket. The carrier bracket includes two parallel cylinder rods, and the cylinder rod is sleeved for supporting the bracket The caster is connected to the hinge through a fulcrum. The tubular rod is provided with a transmission tube. The caster is fixedly connected with a rotary sleeve that can be fitted on the tubular rod, and the inner wall of the rotary sleeve is provided with a spiral hollow track. The transmission tube is provided with a first locking pin embedded in the hollow track; the two sides of the hinge seat are provided with curved curved chutes, and the end of the transmission tube is clamped in the curved arc chute and can be a pin that slides in the chute; when the pusher is folded, the curved chute of the hinge pushes the pin and the transmission tube Horizontally moving, the first pin on the transmission tube drives the rotation kit to rotate around the shaft, and the casters connected to the rotation kit are automatically folded into the bracket.

The spiral hollow track of the rotary kit has a straight groove at the tail, and when the pusher rotates to open

1⁄2 When the first lock pin drive rotation kit turns 90 degrees, the first lock pin snaps into the straight groove on the rotary kit to lock.

a slot of the rotating sleeve away from the hinge seat is provided with a card slot, and a corresponding second lock pin is disposed on the transmission tube, and the second lock pin and the first lock pin are mutually offset in the axial direction and the radial direction of the transmission tube. When the rotary kit is rotated through 90 degrees under the driving of the first lock pin, the second lock pin is locked into the slot on the rotary kit to lock.

As a further improvement of the present invention, the pusher includes a retractable inner and outer sleeves and a telescopic locking mechanism, and the hinge seat is provided with the telescopic locking mechanism and prevents the hinge from rotating around the pin in the open state of the pusher. Automatic lock mechanism.

The automatic lock mechanism comprises an L-shaped lock seat, and the two sides of the lock seat are provided with a chute, and the lower part of the lock seat and the hinge seat form an active connection having only a degree of freedom of movement along the axial direction of the transmission tube, passing through the lock seat The lock cylinder of the chute is connected with the drive plate, and the drive plate is movably connected with the outer sleeve, and is driven by the inner sleeve to move in the outer sleeve; when the pusher is opened, the pin is locked at the L-shaped corner of the lock seat.

The outer sleeve is further provided with a limiting strip. The upper end of the limiting strip is provided with a limiting lug. The lower end of the limiting strip passes through the through hole at the bottom of the inner sleeve and is connected with the driving plate, and the upper end passes through the limiting lug and the inner sleeve. Pipe activity connection.

The transmission plate is mounted on a seat provided with a through hole, and the seat is fixed at a lower end portion of the outer sleeve. The transmission plate slides up and down along the through hole on the seat, and a preloading spring and a connecting seat are provided on the driving plate, the connecting seat and the limit position The lower end of the bar is connected.

The rotating kit is composed of a rotating seat cover and a rotating seat with a symmetric spiral groove. The rotating seat is combined and inserted into the rotating seat cover; the symmetric spiral groove on the rotating seat is combined into a spiral hollow track.

The telescopic locking mechanism is disposed in a crossbar connecting the outer sleeve, the telescopic locking mechanism includes at least two latches for locking the relative positions of the inner and outer sleeves, and a handle connected to the latch and a spring disposed between the two latches; The front end is provided with a convex hook; the bracket is provided with a panel, and the panel is provided with a bayonet locking with the convex hook, and the position of the bayonet corresponds to the position of the handle when the pusher is folded onto the panel. As a further improvement of the present invention, a front end of the bottom of the hinge seat is provided with a notch, and an end surface corresponding to the notch on the rotating sleeve is provided with a lug, and when the caster is opened, the lug is locked on the hinge Within the gap.

When the cart is in operation, both the casters and the pushers open and form a rigid connection. The first locking pin on the transmission tube is locked in the straight slot on the rotating kit, and the second locking pin is locked in the slot in the rotating sleeve, and the lug on the rotating sleeve and the notch on the hinge seat are engaged with each other. The pin is locked at the L-shaped corner of the lock seat, so that the hinge cannot be rotated, and the drive plate cannot move downward under the joint action of the push-type telescopic locking device and the upper limit lug of the limit bar, so that the lock seat cannot be along The drive tube moves axially backwards to ensure a firm connection between the pusher, the bracket and the caster.

When it is necessary to fold the luggage cart, firstly, the telescopic locking mechanism of the inner and outer sleeves is released, and the inner sleeve is contracted. When the force of the inner sleeve acts on the drive plate, the lock column and the chute of the drive plate act together. The lock seat is moved backward, so that the pin on the transmission tube is disengaged from the L-shaped corner of the lock seat, and the lock seat is locked to the hinge seat. At this time, when the pusher is pressed against the carrier, the lug on the rotary set is separated from the notch on the hinge, and the pin at the end of the drive slides in the curved chute of the hinge, so the pusher is pushed while the pusher is pushed Pressing the transmission tube forward, the second pin is disengaged from the slot, the first locking pin is disengaged from the straight slot; and at the same time, since the first locking pin on the transmission tube is embedded in the spiral hollow track of the rotary kit, the transmission tube is received When the force moves forward, the spiral hollow track of the rotary kit rotates relative to the first lock pin, so that the pusher pushes the drive tube to rotate the caster connected to the rotary set, thereby realizing that the caster is automatically folded into the baggage when the pusher is folded. The bottom of the car holder. The open work process is just the opposite.

Compared with the prior art, the invention has the following advantages:

The invention adopts a transmission tube with a first and a second locking pin and a pin in the luggage car holder, the caster with the rotating sleeve is sleeved outside the transmission tube, and the first locking pin of the transmission tube is in the rotation kit The spiral hollow track is arranged to slide; the pin slides in the curved chute of the connecting bracket and the hinge of the pusher, and is locked by the lock seat; by unlocking the lock seat, when the pusher is folded or opened, The transmission tube is moved by force, and the spiral hollow track of the rotary kit rotates relative to the lock pin, so that all the casters are automatically folded on the luggage vehicle support when the push handle is folded. The structure is simple and the concept is ingenious, and the push handle can be folded. Folding casters, very convenient and practical. Moreover, since the luggage cart of the present invention is provided with multiple positioning devices, after the luggage cart is opened, its various The connection between the parts is stable and reliable, and there is no wobble in the front, back, left and right. Moreover, the luggage cart after folding the casters and pushing the hand is small in size and convenient to carry.

DRAWINGS

Figure 1 is a schematic structural view of a luggage cart of the present invention (panel not shown);

Figure 2 is a cross-sectional view of Figure 1;

Figure 3 is a front elevational view of the crossbar of Figure 1;

Figure 4 is a structural view of a luggage cart according to another embodiment of the present invention;

Figure 5 is a partially enlarged exploded view of Figure 4;

Figure 6 is a structural view of the inner sleeve of the pusher of Figure 4 after being folded into the outer sleeve;

Figure 7 is a structural view of the push-hand rotation folding process of Figure 6;

Figure 8 is a structural view of the pusher of Figure 7 fully folded over the bracket;

Figure 9 is an exploded perspective view of the luggage cart of Figure 4;

Figure 10 is another perspective exploded view of the luggage cart of Figure 4;

Figures 11a~e are views of various angles of the rotary kit;

Figure 12 is a perspective view of the luggage cart of Figure 4 after being folded;

Figure 13 is a cross-sectional view of the pusher;

Figure 14 is a perspective view of the entire luggage cart;

Figure 15 is a perspective view of the flatbed after it has been completely folded.

detailed description

The luggage cart of the present invention will be further described below in conjunction with the drawings and specific embodiments of the specification:

A luggage cart as shown in FIGS. 1 to 3, 5, 9, and 10 includes a carrier bracket 1 for carrying an object and a pusher 2 connected by a hinge 7 and foldable to the carrier bracket. The object support comprises two parallel barrel rods 11 and a plurality of horizontal strips 13. The rod rods 11 are sleeved with casters 3 for supporting the brackets, and the ends of the rod rods 11 are connected to the hinges 7 through the fulcrums 0. The pusher 2 includes a retractable inner and outer sleeves 21, 22, a crossbar 23 connecting the left and right outer sleeves 22, and a telescopic locking mechanism 9 disposed in the crossbar 23. A shaft 5 is provided with a transmission tube 5, and the caster 3 is fixedly connected with a rotary sleeve 4 that can be fitted on the shaft 11. The inner wall of the rotary sleeve 4 is provided with a symmetric spiral hollow track 41, and the transmission tube 5 is provided with a card. A first locking pin (vertical locking pin) 51 in the hollow track. There are bends on both sides of the hinge 7 The curved chute 6 is provided at the end of the transmission pipe 5 with a pin 8 that is caught in the curved chute 6 and slidable in the chute. The hinge seat 7 is provided with an automatic lock mechanism 15 that is interlocked with the telescopic locking mechanism 9 and that prevents the hinge 7 from rotating about the pin 8 in the open state of the pusher 2. When the pusher 2 is rotated and folded onto the bracket, the curved chute 6 of the hinge 7 pushes the pin 8 and the transmission tube 5 to move horizontally, and the first lock pin 51 on the transmission tube 5 drives the rotation kit 4 to rotate around the rod 11 The casters 3 connected to the rotary kit 4 are automatically folded into the bracket 1 at the same time.

In order to position the caster 3 with the caster 3 open around the tubular shaft 11, the present embodiment opens a straight slot 42 at the tail of the spiral hollow track 41 of the rotary kit 4, when the pusher 2 is rotated open to the rotary kit 4 at the first When the lock pin 51 is driven through 90 degrees, the first lock pin 51 is locked in the straight groove 42 on the rotary kit 4. The specific structure of the rotary kit 4 is as shown in Fig. 11: wherein (a) shows that the rotary kit 4 is composed of a rotary seat 4a, 4b with a symmetric spiral groove, and the rotary seats 4a, 4b are combined and inserted into the rotary seat cover. 4c, and fixedly connected with the rotating seat cover 4c by fasteners respectively; Figure (b) shows a schematic view of the rotating sleeve 4 which cuts off a part of the outer layer of the rotating seat cover 4c in the axial direction; Figure (c) shows the figure (b) A perspective view of the other direction; Figure (d) is a front view of Figure (c); Figure (e) is a side view of Figure (d). In the same manner, as shown in Fig. 9, in order to facilitate the movement of the first lock pin 51 following the transmission tube 5, the barrel rod 11 is provided with a corresponding opening llb.

The luggage cart of Figures 1 to 3 is also specifically designed with a lateral positioning device for the caster 3, the positioning device comprising a second locking pin 52 disposed on the transmission tube 5, and a corresponding slot 43 disposed on the rotary kit 4. As shown in FIGS. 2 and 11, the second lock pin 52 is laterally mounted on the transmission tube 5, and thus may also be referred to as a transverse lock pin. The second lock pin 52 and the first lock pin 51 are offset from each other by a certain distance, and mutually vertical. When the rotary kit 4 is rotated through 90 degrees under the driving of the first lock pin 51, the second lock pin 52 is locked in the card slot 43 on the rotary kit 4 to be locked. In order to facilitate the movement of the second locking pin, a corresponding opening 13a should be provided on the horizontal bar 13 of the bracket 1. Meanwhile, as shown in Fig. 9, a corresponding opening 11a should also be provided on the bobbin 11.

As shown in FIG. 4, the automatic lock mechanism 15 includes an L-shaped lock base 151. The two sides of the lock base 151 are provided with a chute 150, and the lower portion of the lock base 151 is sleeved in the sliding groove 71 at the bottom of the hinge base 7, The lock seat 151 is slidable back and forth along the sliding groove 71 to form a movable connection having only a degree of freedom of movement along the axial direction of the transmission tube 5. The lock cylinder 152 passing through the chute 150 of the lock base 151 is coupled to the drive plate 153. The drive plate 153 is mounted on a seat 154 having a through hole, and the seat 154 is fixed to the lower end of the outer sleeve 22, and is driven. The plate 153 can slide up and down along the through hole of the seat 154, and the upper part thereof is connected to the limiting strip 157 through the spring 155 and the connecting seat 156 to form a linkage mechanism for automatically moving up and down. The spring 155 is mounted between the seat 154 and the connecting seat 156. Through the action of the seat 154 and the connecting seat 156, the driving plate 153 is normally moved upward by the force of the spring 155, and the locking seat 151 is on the pin 152, the driving plate 153, and the chute. Moving forward under the action of 150, that is, the lock seat 151 is normally in the locked position (as shown in FIG. 4). During the rotation of the pusher 2 by the folded state, the pin 8 moves in the curved chute 6 to automatically open the lock seat 151 to move it backward. When the pusher is fully opened, the lock seat 151 functions as the spring 155. Moving downward and forward, the pin 8 is locked at the L-shaped corner of the lock seat 151, that is, the hinge 7 and the pusher 2 connected thereto are fixed by the fulcrum 0 and the pin 8, and the hinge 7 cannot be rotated around the fulcrum 0. , to maintain a rigid connection between the pusher 2 and the bracket 1.

Further improvements are also made in this embodiment. The upper end of the limiting strip 15 is provided with a limiting lug 00. The lower end of the limiting strip 157 passes through the through hole in the bottom plug 21a of the inner sleeve 21 and is indirectly connected with the driving plate 153. The upper end passes through the limiting lug 00 and The inner sleeve 21 forms an articulated connection. The function of the limiting lug 00 is: after the hand pusher 2 is rotated and opened, the inner sleeve 21 moves upward, and the inner plug 22a3⁄4 connected at the lower end thereof moves upward at the same time when it is raised to the working height, and is locked by the telescopic locking mechanism 9, the outer sleeve After the tubes 21, 22, under the blocking action of the limiting lug 00 of the limiting strip 157, the driving plate 153 cannot move downward, so that the locking seat 151 cannot move backward, that is, the locking seat 6 locks the pin 8 at At the L-shaped corner, the hinge 7 is in a safely locked state.

As shown in Fig. 13, the telescopic locking mechanism 9 is disposed in a crossbar 23 connecting the outer sleeves 22 on both sides, and the telescopic locking mechanism 9 includes at least two latches 91 for locking the relative positions of the inner and outer sleeves 21, 22 and the latch 91. A connected handle 92 and a spring 93 disposed between the two pins 91; a front end of the handle 92 is provided with a convex hook 92a. As shown in FIGS. 14 and 15, a panel 12 is disposed on the bracket 1. The panel 12 is provided with a bayonet 12a that is locked with the hooks 92a. The position of the bayonet 12a and the pusher 2 are folded onto the panel 12. The position of the handle 92 corresponds to that. Thus, after the luggage cart is folded, the pusher 2, the bracket 1, the panel 12, and the caster 3 can be connected as a whole by the convex hook 92.

In addition, the present embodiment also enhances the positioning of the caster 3 by the following improvements. As shown in FIGS. 7, 11, and 12, the front end of the bottom of the hinge base 7 is provided with a notch 10, and the end surface of the rotary sleeve 4 corresponding to the notch 10 is provided with a lug 44. When the caster 3 is opened, the lug 44 is provided. It is just locked in the notch 10 on the hinge 7, wherein the shape of the lug 44 and the mouth 10 can be trapezoidal or other shapes. The convex The ear 44 is advantageous for tightening the connection between the caster 3 and the bracket 1 when the pusher 2 is unfolded, preventing the caster 3 from loosening, and avoiding the fact that the caster 3 is folded due to the heavy weight when the load is heavy, and the pusher 2 is brought closer to the carrier support 1 .

The number of spiral hollow rails 41 in the rotary kit 4 is two, and is axially symmetrically disposed inside the rotary kit 4. The transmission tube 5 is provided with a first lock pin 51 corresponding to the number of spiral hollow rails 41, and is respectively inserted. In the corresponding spiral hollow track 41.

There are two curved arc chutes 6 on the hinge seat 7, which are respectively disposed on two sides of the hinge seat 7; the number of the pin posts 8 corresponding to the curved arc chute 6 is also two, and respectively corresponding to the corresponding Curved arc chute 8 inside.

Of course; according to the different requirements of each user, the luggage car holder 1 soil may not be provided with the carrier panel 12 and the like.

As shown in Figures 4 and 6 to 8, the approximate working flow of the luggage cart in this embodiment is as follows: When the trolley is in the working state of Figure 4, both the caster 3 and the pusher 2 are in an open state, and the first on the transmission tube 5 The locking pin 51 is locked in the straight slot 42 on the rotary kit 4, and the second locking pin 52 is locked in the slot 43 on the rotary kit 4, and the lug 44 on the swivel sleeve 4 and the hinge 7'" The notches 10 are engaged with each other, and the pin 8 is locked at the L-shaped corner of the lock base 151 so that the hinge 7 cannot rotate about the fulcrum 0. Moreover, the drive plate 153 of the automatic lock mechanism 15 is in the push-type telescopic locking device 9 and the limit bar 157 The upper limit lug 00 can not move downwards under the joint action, so that the lock seat 151 can not move backwards along the transmission tube 5 axially, ensuring a stable connection between the pusher 2, the bracket 1 and the caster 3 in the open state. Connection.

When it is necessary to rotate the pusher 2 around the luggage-carriage holder 1, the telescopic locking mechanism 9 of the inner and outer sleeves 21, 22 is first released, and the inner sleeve 21 is contracted downward. As shown in FIG. 6, when the force of the bottom of the inner sleeve 21 acts on the drive plate 153, the lock base 151 is moved backward by the cooperation of the lock post 152 and the chute 150 on the drive plate 153, so that the transmission tube 5 is moved. The upper pin 8 is disengaged from the L-shaped corner of the lock seat 151, and the lock of the lock seat 7 by the lock seat 151 is released. At this time, when the pusher 2 is pressed against the carrier 1, as shown in Fig. 7, the lug 44 on the rotary set 4 is disengaged from the notch 10 on the hinge 7, and the pin 8 at the end of the transmission tube 5 is at the hinge The curved arc chute 6 of the slide 7 slides, so that the pusher 2 pushes the pusher 2 to move forward, the second lock pin 52 is disengaged from the slot 43 and the first lock pin 51 is disengaged from the straight slot 42. At the same time, since the first lock pin 51 on the transmission tube 5 is engaged in the rotation The spiral hollow track 41 of the kit 4, so that when the transmission tube 5 continues to be forced to move forward, the spiral hollow track 41 of the rotary set 4 is relatively rotated about the first lock pin 51, thus realizing the pusher 2 to push the drive tube 5 Rotating the caster 3 connected to the rotary kit 4, so that the caster 3 is automatically folded under the luggage car holder 1 when the pusher 2 is folded. Among them, the function of the preloading spring 155 is that when the push tube 2 is rotated downward to a certain angle, when the force pressing on the push tube 2 is released, the lock seat 151 automatically moves forward under the force of the spring 155. When opened, the lock base 151 automatically moves rearward under the force of the pin 8.

The working process of opening the baggage car is the reverse of the above process.

The luggage cart in this embodiment has a simple structure and a clever concept, and can be folded and folded while folding the hand, which is very convenient and practical. Moreover, since the baggage cart of the present invention is provided with multiple positioning devices, after the baggage car is opened, the connection between the various parts thereof is stable and reliable, and no front, rear, left and right shaking occurs. Moreover, the luggage cart after folding the casters and pushing the hand is small in size and convenient to carry.

Claims

1. A new type of baggage cart comprising a carrier bracket (1) for carrying articles and a hinge

(7) A pusher (2) connected and foldable on the carrier, the carrier comprises two parallel barrels (11), and the shaft (11) is provided with a caster (3) for supporting the bracket, the cylinder The end of the rod (11) is connected to the hinge seat (7) through a fulcrum (0), and is characterized in that: the cylinder rod (11) is provided with a transmission tube (5), and the caster (3) is fixedly connected with a sleeve a rotating sleeve (4) on the barrel rod (11), a spiral hollow rail (41) is arranged on the inner wall of the rotating sleeve, and a first locking pin (51) stuck in the hollow rail is arranged on the transmission tube (5); An arcuate chute (6) is arranged on both sides of the hinge seat (7), and an end of the transmission tube (5) is clamped in the curved chute '(6) and can be inside the chute Sliding pin

(8); Pusher (2) When folding, the curved chute (6) of the hinge (7) pushes the pin (8) and the transmission tube (5) horizontally, the first on the transmission tube (5) Lock pin (51) drive rotation kit

(4) Rotating the bobbin (11), the caster (3) connected to the rotary kit (4) is automatically folded to the bracket (1).

2. A new type of baggage cart according to claim 1, wherein the spiral hollow track (41) of the swivel kit (4) has a straight slot (42) at the end thereof, and the pusher (2) is rotated to open When the first lock pin (51) drives the rotary kit (4) to rotate through 90 degrees, the first lock pin (51) snaps into the straight slot (42) on the rotary kit (4) to lock.

The new type of luggage cart according to claim 2, characterized in that: the rotating sleeve (4) is provided with a card slot (43) at one end away from the hinge seat (7), and is provided on the transmission tube (5). Corresponding second locking pin (52), second locking pin (52) and first locking pin (51) are offset from each other in the axial direction and the radial direction of the transmission tube (5), when the rotation kit (4) is in the first When the lock pin (51) is driven through 90 degrees, the second lock pin (52) is locked into the slot (43) on the rotary kit (4).

The new type of luggage cart according to any one of claims 1 to 3, characterized in that: the pusher (2) comprises a retractable inner and outer sleeves (21, 22) and a telescopic locking mechanism, the hinge (7) It is interlocked with the telescopic locking mechanism and prevents the hinge from being opened in the pusher (2)

(7) Automatic locking mechanism (15) that rotates around the pin (8).

5. The new type of luggage cart according to claim 4, wherein: the automatic lock mechanism (15) comprises an L-shaped lock seat (151), and the two sides of the lock seat (151) are provided with a chute (150) ), lock The lower part of the seat (151) and the hinge seat (7) form a movable connection having only a degree of freedom of movement along the axial direction of the transmission tube (5), passing through the lock cylinder (152) of the chute (150) of the lock seat (151) and The drive plate (153) is connected, the drive plate (153) is movably connected to the outer sleeve (22), and is driven by the inner sleeve (21) to move in the outer sleeve (22); when the pusher (2) is open, the pin (8) Engaged at the L-shaped corner of the lock seat (151).

The baggage cart according to claim 5, wherein: the outer sleeve is further provided with a limiting strip (157), and the upper end of the limiting strip (157) is provided with a limiting lug (00), the limiting strip The lower end of (157) is connected to the drive plate (153) through the through hole at the bottom of the inner sleeve (21), and the upper end is movably connected to the inner sleeve (21) through the limit lug (00).

A new type of luggage cart according to claim 6, wherein said drive plate (153) is mounted on a seat (154) having a through hole, and the seat (154) is fixed to the lower end of the outer sleeve (22). The drive plate (153) slides up and down along the through hole in the seat (154), and the upper part of the drive plate (153) is provided with a preloading spring (155) and a connecting seat (156), a connecting seat (156) and a limiting strip ( 157) The lower end is connected.

8. The new type of luggage cart according to claim 4, characterized in that the rotary kit (4) is composed of a rotary seat cover (4e) and a rotary seat (4a, 4b) with a symmetric spiral groove, and the rotary seat (4a 4b) is combined and inserted into the rotating seat cover (4c); the symmetrical spiral grooves on the rotating seats (4a, 4b) are combined into a spiral hollow track (41).

9. The new type of luggage cart according to claim 4, wherein: the telescopic locking mechanism (9) is disposed in a cross bar (23) that connects the outer sleeve (22), and the telescopic locking mechanism includes at least two locks. , the outer sleeve (21, 22) relative position of the latch (91) and the handle (92) connected to the latch (91) and a spring (93) disposed between the two latches (91); the handle (92) The front end is provided with a convex hook (92a); the bracket (1) is provided with a panel (12), and the panel (12) is provided with a bayonet (12a) and a bayonet (12a) which are locked with the convex hooks (92a). ) where the location and push hands

(2) The position of the handle (92) corresponds to when it is folded onto the panel (12).

10. The new type of luggage cart according to claim 4, wherein: the front end of the bottom of the hinge seat (7) is provided with a notch (10), and the end surface of the rotating sleeve (4) corresponding to the notch (10) A lug (44) is provided which is locked in the notch (10) on the hinge (7) when the caster (3) is opened.