Telescopic rod assembly for travel suitcases with quick change between upright and flat position

Abstract

A telescopic rod assembly for a travel suitcase with quick change between upright and flat positions, comprising a telescopic rod that can be retracted and moved, a telescopic rod seat attached to the telescopic rod, and a locking seat attached to the case body of the travel suitcase, wherein a latch is arranged in the locking seat and can move back and forth towards the telescopic rod seat, and wherein a locking hole adapted to the latch is provided on the telescopic rod seat, characterized in that a toggle buckle is connected to the latch and is used to drive the latch to move back and forth towards the telescopic rod seat, wherein, when the latch is inserted into the locking hole of the telescopic rod seat, the telescopic rod seat is attached to the locking seat;and wherein, when the latch is released from the locking hole, the telescopic rod seat is separated from the locking seat.;

Description

TECHNICAL FIELD

[0001] The present utility model relates to a telescopic rod assembly for travel suitcases with quick change between upright and flat positions. STATE OF THE ART

[0002] The travel suitcase is an indispensable part of modern travel, has the functions of storage and transportation, and is a movable device. The Chinese Utility Model Publication No. "CN222217346U" discloses a horizontally reversible travel suitcase, which mainly consists of a suitcase body, a telescopic rod mechanism, and casters. The telescopic rod mechanism consists of a telescopic rod and a telescopic rod seat. The lower end of the telescopic rod is rotatably connected to the suitcase body, and a locking seat is arranged between the telescopic rod and the suitcase body. A retractable latch is arranged in the locking seat, which is connected to an unlocking mechanism. A locking hole adapted to the latch is provided on the telescopic rod seat.

[0003] The unlocking mechanism mainly consists of a latch, a release block, a toggle buckle, and a spring, wherein the latch is installed in the locking seat, is retractable, and fits into the locking hole on the telescopic rod seat to achieve the locking or unlocking function; and wherein the release block is connected to the latch by a transmission shaft and is provided with an inclined strip-shaped groove to convert the transverse movement of the release block into the telescopic movement of the latch, and wherein the toggle buckle is connected to the release block by screws and is provided with anti-slip patterns and convex stripes on the surface to make it easier for the user to operate the release block for movement.

[0004] The telescopic rod mechanism has the following technical problems: the locking and unlocking between the telescopic rod mechanism and the case body mainly relies on the unlocking mechanism, and the unlocking structure is composed of a series of parts, and it is necessary to machine the inclined strip-shaped groove to convert the transverse movement of the unlocking block into the telescopic movement of the latch, which is a complex structure, complex machining process, and cumbersome assembly, directly leading to a reduction in production efficiency and an increase in production costs. CONTENT OF THE PRESENT UTILITY MODEL

[0005] The technical problem to be solved by the present utility model is to provide, in view of the above-described deficiencies in the prior art, a telescopic rod assembly for travel suitcases with quick change between the upright and flat positions, wherein the bar is directly driven to move by a toggle buckle, thereby reducing the number of parts and the complexity of the machining process to realize a flexible change between different states of the travel suitcase, which improves production efficiency and reduces costs.

[0006] To achieve the above objective, the present utility model uses the following technical solution: a telescopic rod assembly for travel suitcases with quick change between upright and flat positions, comprising a telescopic rod that can be retracted and moved, a telescopic rod seat attached to the telescopic rod, and a locking seat attached to the suitcase body of the travel suitcase, wherein a latch is arranged in the locking seat that can move back and forth towards the telescopic rod seat, and wherein a locking hole adapted to the latch is provided on the telescopic rod seat, characterized in that a toggle buckle is connected to the latch, which is used to drive the latch to move back and forth towards the telescopic rod seat, wherein, when the latch is inserted into the locking hole of the telescopic rod seat,the telescopic rod seat is attached to the locking seat; and when the latch is released from the locking hole, the telescopic rod seat is separated from the locking seat.,

[0007] Using the above technical solution, the latch is directly driven by the toggle buckle, which simplifies the structure, reduces the number of parts, reduces the difficulty of machining and assembly, and effectively solves the problem of the original complex structure of the unlocking mechanism. Furthermore, there is no need to machine an inclined strip-shaped groove, which reduces the complexity of the machining process and simplifies the assembly process, improving production efficiency and reducing production costs. When installed, the locking seat is fixed to the suitcase body, the telescopic rod seat is fixed to the telescopic rod, and the lower end of the telescopic rod is rotatably connected to the suitcase body or the roller seat of the travel suitcase.By inserting and separating the latch on the locking seat into the locking hole on the telescopic rod seat, the user can operate the toggle buckle to unlock the telescopic rod when needed, and the telescopic rod is driven to rotate around the rotary connection point between the bottom end and the suitcase body to realize flexible switching of the travel suitcase between different states (standing, lying down), thereby meeting the needs of use in different scenarios.

[0008] The telescopic rod assembly for travel suitcases with quick change between upright and flat position can further be adjusted in such a way that a spring is connected to an end section of the latch facing away from the telescopic rod seat, wherein the locking seat is provided with a guide column corresponding to the spring, and wherein the latch is provided with a guide hole corresponding to the spring, and wherein one end of the spring is placed on the guide column and the other end is inserted into the guide hole.

[0009] Using the above technical solution, the main function of the spring is to provide a stable return force for the latch. When the latch is pulled out from the locking hole by a human hand through the toggle buckle, the spring automatically returns the latch to the original position after the human hand releases the toggle buckle, which is convenient for use. The guide column and guide hole support and guide the two ends of the spring to ensure that the spring moves along the axial direction during extension and contraction, which avoids displacement or deformation of the spring during the movement process. Next, the spring can improve the working stability of the latch, so that the latch does not shake regardless of the state of movement of the latch.

[0010] The telescopic rod assembly for travel suitcases with quick change between upright and flat position can be further adjusted such that a connecting shaft is arranged between the toggle buckle and the latch, wherein the locking seat is provided with a strip-shaped hole corresponding to the connecting shaft, and wherein the strip-shaped hole is arranged parallel to the moving direction of the latch, and wherein one end of the connecting shaft is fixedly connected to the toggle buckle, and wherein the latch is provided with a connecting hole, and wherein the other end of the connecting shaft passes through the strip-shaped hole and is inserted into the connecting hole.

[0011] Using the above technical solution, the connecting shaft is a direct connection assembly between the toggle buckle and the latch. By firmly connecting one end of the connecting shaft to the toggle buckle and inserting the other end into the connecting hole on the latch, the connecting shaft transmits the movement of the toggle buckle to the latch, thus achieving reciprocating movement of the latch. Through the connecting shaft, the strip-shaped hole guides the movement of the toggle buckle and the latch, while simultaneously limiting the latch's limit movement position to prevent excessive displacement of the latch.

[0012] The telescopic rod assembly for travel suitcases with quick change between upright and flat position can be further adjusted so that the surface of the toggle buckle is designed with anti-slip patterns, with the toggle buckle designed with convex stripes in the middle.

[0013] Using the above technical solution, the anti-slip patterns on the surface of the toggle buckle and the convex stripes in the middle each increase the friction force, making it easier to press the toggle buckle with a human hand.

[0014] The telescopic rod assembly for travel suitcases with quick change between upright and flat positions can be further configured such that the latch comprises a connecting body and a plurality of sets of latch blocks arranged one after the other on the same side edge of the connecting body, wherein the connecting body is connected to the toggle buckle, and wherein the locking seat is provided with a latch hole corresponding to the locking hole that slidably fits with the latch blocks, and wherein a plurality of sets of weight reduction grooves are provided on the connecting body.

[0015] Using the above technical solution, the function of the locking hole is to prevent interference between the locking bolt and the locking seat during movement toward the locking hole. The weight-reducing grooves are used to reduce the weight of the locking seat.

[0016] The telescopic rod assembly for travel suitcase with quick change between upright and flat position can be further adjusted such that the locking seat is provided with a slot on a side facing the telescopic rod seat, the telescopic rod seat is provided with a hook that fits with the slot. By using the above technical solution, when the telescopic rod seat is limited to the suitcase body, in addition to the latch fitting with the locking hole, the hook also fits with the slot to improve the connection strength between the telescopic rod seat and the suitcase body.

[0017] The telescopic rod assembly for travel suitcases with quick change between upright and flat positions can be further adjusted such that the locking seat comprises an upper cover plate and a lower cover plate arranged opposite each other, wherein the upper cover plate is provided with a plurality of sets of connecting columns, and wherein the lower cover plate is provided with a set of adapted positioning holes corresponding to each set of connecting columns, and wherein an internally threaded hole is provided in the connecting column, and wherein the connecting column is connected to a fastening element through the internally threaded hole.

[0018] Using the above technical solution, the locking seat is designed as an upper cover plate and a lower cover plate that are detachably connected to each other, which facilitates the assembly and replacement of parts such as the latch, spring, toggle buckle, connecting shaft, etc. The fasteners can be standard parts such as screws or pins, and the fasteners realize the fastening between the upper cover plate and the lower cover plate through the connecting columns and the positioning holes.

[0019] The telescopic rod assembly for travel suitcases with quick change between upright and flat position can further be adjusted such that a rotating sleeve is arranged at the lower end of the telescopic rod, in which a rotating shaft is arranged, wherein rotating seats are arranged symmetrically at two ends of the rotating sleeve, which are fastened to the case body of the travel suitcase, and wherein the rotating seat is provided with a plug-in hole on a side surface facing the rotating sleeve, and wherein the end section of the rotating shaft extends towards the rotating seat until it is inserted into the plug-in hole.

[0020] Using the above technical solution, when the latch comes out of the locking hole, the telescopic rod seat is no longer restricted, and with a human hand, the telescopic rod is pulled or pushed to rotate, and the rotary sleeve and the rotary shaft rotate around the rotary seat to realize rotation of the telescopic rod.

[0021] The telescopic rod assembly for travel suitcases with quick change between upright and flat positions can be further configured such that a side surface of the rotating seat is provided with a plurality of sets of projections surrounding the outer periphery of the plug-in hole and arranged at intervals, an end portion of the rotating sleeve is provided with recesses corresponding to the projections, and the outer surface of the projections is curved.

[0022] Using the above technical solution, a certain pushing or pulling force is applied by a human hand to the telescopic rod until the protrusions separate from the recesses. When the telescopic rod is rotated to a required angle, the protrusions mate with a set of recesses to ensure that the telescopic rod remains in a fixed position at that angle. Therefore, the telescopic rod can remain fixed at any angle, increasing the flexibility of using the travel case. The surface of the protrusion is curved, which facilitates the separation and fit of the protrusions and recesses.

[0023] The telescopic rod assembly for travel suitcases with quick change between upright and flat positions can be further adjusted such that the telescopic rod comprises an outer tube and an inner tube, wherein the lower end of the outer tube is connected to the rotating sleeve, and wherein a connecting sleeve is arranged symmetrically at two ends of the telescopic rod seat, and wherein a barb is arranged on the outer circumference of the connecting sleeve, and wherein a bayonet is provided at the upper end of the outer tube which is adapted to the barb, and wherein the connecting sleeve is inserted into the outer tube until the barb fits into the bayonet, and wherein a through hole is provided in the telescopic rod seat which penetrates the connecting sleeve, and wherein the inner tube is inserted into the outer tube through the through hole and fits slidably with the outer tube, and wherein a handle of the telescopic rod is arranged at the upper end of the inner tube.

[0024] Using the above technical solution, the barb fits into the bayonet to create a secure connection between the telescopic rod seat and the outer tube. Symmetrical through holes are provided at two ends of the telescopic rod seat, penetrating the connecting sleeve. The upper end of the outer tube is inserted into the through holes of the telescopic rod seat to ensure the accessibility of the telescopic rod during expansion and contraction.

[0025] The present utility model is explained in more detail below in conjunction with the attached drawings and exemplary embodiments. SHORT DESCRIPTION OF THE DRAWING Fig. 1 shows a schematic diagram of the overall structure of an embodiment of the present utility model; Fig. 2 shows an exploded view of a lower end of a telescopic rod in an embodiment of the present utility model; Fig. 3 shows an exploded view of an upper part of a telescopic rod in an embodiment of the present utility model; Fig. 4 shows a schematic diagram of a lower cover plate in an embodiment of the present utility model; Fig. 5 shows a schematic diagram of an upper cover plate in an embodiment of the present utility model; Fig. 6 shows an exploded view of a latch and a toggle buckle in an embodiment of the present utility model. List of reference symbols 1 telescopic pole 1a rotating sleeve 1b Rotating shaft 1c Swivel seat 1d plug hole 1st lead 1f recess 1g outer tube 1h inner tube 1j bayonet 2 telescopic rod seats 2a Locking hole 2b hook 2c connecting sleeve 2d barbs 3 locking seat 3a Strip-shaped hole 3b Guide column 3c bolt hole 3D slot 3e Upper cover plate 3f Lower cover plate 3g connecting column 3h positioning hole 4 bars 4a Connection hole 4b Guide hole 4c connecting body 4d locking block 4th weight reduction groove 5 toggle buckle 5a Non-slip pattern 5b Convex stripe 6 Connecting shaft 7 spring DETAILED DESCRIPTION

[0026] In conjunction with the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model are explained clearly and completely below. Obviously, the explained embodiments do not represent all embodiments, but only a part of the embodiments of the present utility model. All other embodiments obtained by a person of ordinary skill in the art, assuming no creative work is performed, based on the embodiments in the present utility model should be considered to be covered by the scope of protection of the present utility model.

[0027] As in Fig.1 to 6, a telescopic rod assembly for travel suitcases with quick change between upright and flat positions, comprising a telescopic rod 1 which can be retracted and moved, a telescopic rod seat 2 fastened to the telescopic rod 1 and a locking seat 3 fastened to the case body of the travel suitcase, wherein a latch 4 is arranged in the locking seat 3 which can move back and forth in the direction of the telescopic rod seat 2, and wherein a locking hole 2a adapted to the latch 4 is provided on the telescopic rod seat 2, and wherein a toggle buckle 5 is connected to the latch 4.A connecting shaft 6 is arranged between the toggle buckle 5 and the latch 4. The locking seat 3 is provided with a strip-shaped hole 3a corresponding to the connecting shaft 6, and the strip-shaped hole 3a is arranged parallel to the movement direction of the latch 4. One end of the connecting shaft 6 is fixedly connected to the toggle buckle 5, and the latch 4 is provided with a connecting hole 4a, and the other end of the connecting shaft 6 passes through the strip-shaped hole 3a and is inserted into the connecting hole 4a. The connecting shaft 6 is a direct connection assembly between the toggle buckle 5 and the latch 4. By fixedly connecting one end of the connecting shaft to the toggle buckle 5 and inserting the other end into the connecting hole 4a on the latch 4, the connecting shaft transmits the movement of the toggle buckle 5 to the latch 4 to realize a reciprocating movement of the latch 4.Through the connecting shaft 6, the strip-shaped hole 3a realizes a guide of the movement of the toggle buckle 5 and the latch 4 and at the same time limits the limit movement position of the latch 4 to avoid excessive displacement of the latch 4.

[0028] A spring 7 is connected to an end portion of the latch 4 facing away from the telescopic rod seat 2. The latch seat 3 is provided with a guide post 3b corresponding to the spring 7, and the latch 4 is provided with a guide hole 4b corresponding to the spring 7. One end of the spring 7 is placed on the guide post 3b and the other end is inserted into the guide hole 4b. The main function of the spring 7 is to provide a stable restoring force for the latch 4. When the latch 4 is pulled out of the locking hole 2a by a human hand through the toggle buckle 5, the spring 7 automatically returns the latch 4 to the original position after the human hand releases the toggle buckle 5, which is convenient for use.The guide post 3b and the guide hole 4b support and guide the two ends of the spring 7, ensuring that the spring 7 moves along the axial direction during expansion and contraction, preventing displacement or deformation of the spring 7 during the movement process. Next, the spring 7 can improve the working stability of the latch 4, so that the latch 4 does not shake regardless of the state of movement or non-movement of the latch.

[0029] The surface of the toggle buckle 5 is provided with anti-slip patterns 5a, and the toggle buckle 5 is provided with convex stripes 5b in the center. The anti-slip patterns 5a on the surface of the toggle buckle 5 and the convex stripes 5b in the center each increase the friction force, making it easier to press the toggle buckle 5 with a human hand.

[0030] The latch 4 includes a connecting body 4c and a plurality of sets of latch blocks 4d arranged sequentially on the same side edge of the connecting body 4c. The connecting body 4c is connected to the toggle buckle 5. The locking seat 3 is provided with a latch hole 3c corresponding to the locking hole 2a, which slidably fits with the latch blocks 4d. A plurality of sets of weight-reducing grooves 4e are provided on the connecting body 4c. The function of the latch hole 3c is to prevent interference of the latch 4 with the locking seat 3 during movement toward the locking hole 2a. The weight-reducing grooves 4e are used to reduce the weight of the locking seat 3.

[0031] The locking seat 3 is provided with a slot 3d on a side facing the telescopic rod seat 2, and the telescopic rod seat 2 is provided with a hook 2b that fits the slot 3d. When the telescopic rod seat 2 is attached to the suitcase body, the hook 2b, in addition to the latch 4 fitting the locking hole 2a, also fits the slot 3d to improve the connection strength between the telescopic rod seat 2 and the suitcase body.

[0032] The locking seat 3 includes an upper cover plate 3e and a lower cover plate 3f arranged opposite each other. The upper cover plate 3e is provided with a plurality of sets of connecting columns 3g, and the lower cover plate 3f is provided with a set of matching positioning holes 3h corresponding to each set of connecting columns 3g. An internally threaded hole is provided in the connecting column 3g, and the connecting column 3g is connected to a fastener through the internally threaded hole. The locking seat 3 is configured as an upper cover plate 3e and a lower cover plate 3f that are detachably connected to each other, facilitating the assembly and replacement of parts such as the latch 4, the spring 7, the toggle buckle 5, the connecting shaft 6, etc.The fastening elements can be standard parts such as screws or pins, and the fastening elements realize the fastening between the upper cover plate 3e and the lower cover plate 3f through the connecting columns 3g and the positioning holes 3h.

[0033] At the lower end of the telescopic rod 1, a rotating sleeve 1a is arranged, in which a rotating shaft 1b is arranged. Rotating seats 1c are symmetrically arranged at two ends of the rotating sleeve 1a and are fixed to the suitcase body of the travel suitcase. The rotating seat 1c is provided with a plug-in hole 1d on a side surface facing the rotating sleeve 1a, and the end portion of the rotating shaft 1b extends toward the rotating seat 1c until it is inserted into the plug-in hole 1d. When the latch 4 emerges from the locking hole 2a, the telescopic rod seat 2 is no longer restricted, and the telescopic rod 1 is pulled or pushed with a human hand to rotate, and the rotating sleeve 1a and the rotating shaft 1b rotate around the rotating seat 1c to realize rotation of the telescopic rod 1.

[0034] A side surface of the swivel seat 1c is provided with a plurality of sets of protrusions 1e surrounding the outer periphery of the plug hole 1d and arranged at intervals. An end portion of the swivel sleeve 1a is provided with recesses 1f corresponding to the protrusions 1e, and the outer surface of the protrusions 1e is curved. A certain pushing or pulling force is applied by a human hand to the telescopic rod 1 until the protrusions 1e detach from the recesses 1f. The protrusions 1e fit with a set of recesses 1f when the telescopic rod 1 is rotated to a required rotation angle, ensuring that the telescopic rod 1 remains in a fixed position at that angle. Therefore, the telescopic rod 1 can remain fixed at any rotation angle, increasing the flexibility of using the travel case.The surface of the projection 1e is curved, which facilitates the separation and fitting of the projections 1e and the recesses 1f.

[0035] The telescopic rod 1 comprises an outer tube 1g and an inner tube 1h, wherein the lower end of the outer tube 1g is connected to the rotating sleeve 1a, and wherein a connecting sleeve 2c is arranged symmetrically at two ends of the telescopic rod seat 2, and wherein a barb 2d is arranged on the outer circumference of the connecting sleeve 2c, and wherein a bayonet 1j is provided at the upper end of the outer tube 1g, which is adapted to the barb 2d, and wherein the connecting sleeve 2c is inserted into the outer tube 1g until the barb 2d fits into the bayonet 1j, and wherein a through hole is provided in the telescopic rod seat 2, which penetrates the connecting sleeve 2c, and wherein the inner tube 1h is inserted into the outer tube 1g through the through hole and fits slidably with the outer tube 1g, and wherein a handle of the telescopic rod 1 is arranged.The barb 2d fits into the bayonet 1j to establish a secure connection between the telescopic rod seat 2 and the outer tube 1g. Through holes are symmetrically provided at two ends of the telescopic rod seat 2, penetrating the connecting sleeve 2c. The upper end of the outer tube 1g is inserted into the through holes of the telescopic rod seat 2 to ensure the accessibility of the telescopic rod 1 during expansion and contraction.

[0036] The present embodiment works as follows: When the telescopic rod assembly is installed on the suitcase body of the travel suitcase, a rotatable connection is established by fitting the lower end of the telescopic rod 1 with a rotating sleeve 1a fixed to the suitcase body of the travel suitcase.

[0037] When the suitcase needs to be used in a lying position, the toggle buckle 5 is pressed down, and the toggle buckle 5 drives the latch 4 through the connecting shaft 6 until the latch block 4a on the latch 4 protrudes from the locking hole 2a on the telescopic rod seat 2, then the telescopic rod 1 is rotated. Due to the cooperation between the recesses 1f and the projections 1e, it can be ensured that the telescopic rod 1 remains stationary at any angle.

[0038] When the suitcase needs to be used in the standing state, the telescopic rod 1 is rotated to the surface of the suitcase body of the suitcase until the latch 4 is inserted into the locking hole 2a, whereby a firm connection between the telescopic rod seat 2 and the locking seat 3 can be realized, namely, the telescopic rod 1 is fixed to the suitcase body.

[0039] The technical solution relates to a telescopic rod assembly for travel suitcases with quick change between upright and flat positions, comprising a retractable telescopic rod, a telescopic rod seat attached to the telescopic rod, and a locking seat attached to the suitcase body. A latch capable of reciprocating movement is arranged in the locking seat, and the telescopic rod seat has a matching locking hole. The latch is connected to the toggle buckle, and the toggle buckle drives the latch to move, enabling the telescopic rod seat to be inserted into and separated from the locking seat, thus simplifying the structure, reducing complexity, and reducing costs.Furthermore, a spring can be connected to the end portion of the latch, and the guide posts and holes ensure axial movement of the spring and stabilize the latch. A connecting shaft is arranged between the toggle buckle and the latch, and the strip-shaped hole guides and limits the movement of the latch. The surface of the toggle buckle is provided with anti-slip patterns and convex stripes to increase friction. The telescopic rod assembly can realize switching between different states of the travel case, improving convenience. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] CN 222217346U

[0002]

Claims

[1] Telescopic rod assembly for travel suitcases with quick change between upright and flat positions, comprising a telescopic rod that can be retracted and moved, a telescopic rod seat attached to the telescopic rod and a locking seat attached to the case body of the travel suitcase, wherein a latch is arranged in the locking seat that can move back and forth towards the telescopic rod seat, and wherein a locking hole adapted to the latch is provided on the telescopic rod seat, characterized bythat a toggle buckle is connected to the latch, which is used to drive the latch to move back and forth towards the telescopic rod seat, wherein, when the latch is inserted into the locking hole of the telescopic rod seat, the telescopic rod seat is fixed to the locking seat; and wherein, when the latch is released from the locking hole, the telescopic rod seat is separated from the locking seat. [2] Telescopic rod assembly for travel suitcases with quick change between upright and flat positions according to claim 1, characterized by that a spring is connected to an end section of the bolt facing away from the telescopic rod seat, wherein the locking seat is provided with a guide column corresponding to the spring, and wherein the bolt is provided with a guide hole corresponding to the spring, and wherein one end of the spring is placed on the guide column and the other end is inserted into the guide hole. [3] Telescopic rod assembly for travel suitcases with quick change between upright and flat position according to claim 1, characterized by that a connecting shaft is arranged between the toggle buckle and the latch, wherein the locking seat is provided with a strip-shaped hole corresponding to the connecting shaft, and wherein the strip-shaped hole is arranged parallel to the direction of movement of the latch, and wherein one end of the connecting shaft is fixedly connected to the toggle buckle, and wherein the latch is provided with a connecting hole, and wherein the other end of the connecting shaft passes through the strip-shaped hole and is inserted into the connecting hole. [4] Telescopic rod assembly for travel suitcases with quick change between high and flat positions according to claim 3, characterized by that the surface of the toggle buckle is provided with anti-slip patterns, and the toggle buckle is provided with convex stripes in the middle. [5] Telescopic rod assembly for travel suitcases with quick change between high and flat positions according to one of claims 1 to 4, characterized by in that the latch comprises a connecting body and a plurality of sets of latch blocks arranged one after the other on the same side edge of the connecting body, wherein the connecting body is connected to the toggle buckle, and wherein the locking seat is provided with a latch hole corresponding to the locking hole which slidably fits with the latch blocks, and wherein a plurality of sets of weight reduction grooves are provided on the connecting body. [6] Telescopic rod assembly for travel suitcases with quick change between high and flat positions according to one of claims 1 to 4, characterized by that the locking seat is provided with a slot on a side facing the telescopic rod seat, wherein the telescopic rod seat is provided with a hook adapted to the slot [7] Telescopic rod assembly for travel suitcases with quick change between high and flat positions according to claim 6, characterized by in that the locking seat comprises an upper cover plate and a lower cover plate arranged opposite each other, wherein the upper cover plate is provided with a plurality of sets of connecting columns, and wherein the lower cover plate is provided with a set of adapted positioning holes corresponding to each set of connecting columns, and wherein an internally threaded hole is provided in the connecting column, and wherein the connecting column is connected to a fastening element through the internally threaded hole. [8] Telescopic rod assembly for travel suitcases with quick change between high and flat positions according to one of claims 1 to 4, characterized bythat at the lower end of the telescopic rod there is arranged a rotating sleeve in which a rotating shaft is arranged, wherein at two ends of the rotating sleeve rotating seats are arranged symmetrically and are fastened to the case body of the travel case, and wherein the rotating seat is provided with a plug-in hole on a side surface facing the rotating sleeve, and wherein the end section of the rotating shaft extends towards the rotating seat until it is inserted into the plug-in hole. [9] Telescopic rod assembly for travel suitcases with quick change between high and flat positions according to claim 8, characterized by in that a side surface of the rotary seat is provided with a plurality of sets of projections surrounding the outer periphery of the plug hole and arranged at intervals, wherein an end portion of the rotary sleeve is provided with recesses corresponding to the projections, and wherein the outer surface of the projections is curved. [10] Telescopic rod assembly for travel suitcases with quick change between upright and flat positions according to claim 8, characterized by that the telescopic rod comprises an outer tube and an inner tube, wherein the lower end of the outer tube is connected to the rotating sleeve, and wherein a connecting sleeve is arranged symmetrically at two ends of the telescopic rod seat, and wherein a barb is arranged on the outer circumference of the connecting sleeve, and wherein a bayonet is provided at the upper end of the outer tube, which is adapted to the barb, and wherein the connecting sleeve is inserted into the outer tube until the barb fits into the bayonet, and wherein a through hole is provided in the telescopic rod seat, which penetrates the connecting sleeve, and wherein the inner tube is inserted into the outer tube through the through hole and fits slidably with the outer tube, and wherein a handle of the telescopic rod is arranged at the upper end of the inner tube.

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