CN216416298U

CN216416298U - Height-adjustable draw bar structure and luggage case using same

Info

Publication number: CN216416298U
Application number: CN202121132869.3U
Authority: CN
Inventors: 王尉如; 王全安
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2022-05-03
Anticipated expiration: 2031-05-25

Abstract

The utility model relates to a height-adjustable pull rod structure and a luggage case using the same. The pull rod structure comprises a fixed installation pipe, a cylindrical pull rod is installed in the installation pipe, an elastic pin and an elastic pressing block are arranged on the pull rod, and a plurality of positioning holes are formed in the installation pipe at intervals along the length direction of the installation pipe. The upper end of the installation pipe is provided with a limiting plate, the limiting plate is provided with a rectangular channel, and two opposite side surfaces of the rectangular channel are respectively provided with an arc-shaped groove for the outer peripheral surface of the pull rod to be installed and matched in an inosculating manner. At least two pairs of rotation stopping surfaces are arranged on the pull rod at intervals along the length direction of the pull rod, and the end parts of the arc-shaped grooves form rotation stopping parts. When the elastic pin is matched with the corresponding positioning hole, the corresponding rotation stopping surface on the pull rod is in stop matching with the rotation stopping part on the limiting plate. The pull rod is the whole pole, and intensity is big, when pulling out different length, relies on the face of splining on the pull rod simultaneously and the splining portion splining cooperation atress on the limiting plate through elastic pin and locating hole location cooperation, and the atress intensity is bigger and be difficult to damage.

Description

Height-adjustable draw bar structure and luggage case using same

Technical Field

The utility model relates to the field of luggage cases, in particular to a height-adjustable pull rod structure and a luggage case using the same.

Background

The luggage case, also called as traveling case or draw-bar case, is a common article for people going out and is used for placing needed articles, such as clothes, articles for daily use, etc. Current suitcase, intelligent degree is low, relies mainly to pull or promote the suitcase and removes by the manpower, but when article are more or heavier in the suitcase, need spend great strength, influence the journey and experience. Especially when the time is needed to catch up, the luggage case is pushed or pulled by manpower to move for a long distance, which wastes time and even causes the problem that the luggage case cannot catch up the train or airplane.

In order to facilitate the adjustment of the height of the pull rod, the conventional trunk pull rod is made into a telescopic rod, two pipe bodies with different diameters are sleeved together, and the telescopic rod capable of stretching and retracting is formed by matching an elastic pressing block and an elastic pin. According to the luggage case with the structure, after the telescopic rod is completely pulled out, the two pipe bodies are limited and stopped only by the action of the elastic pin, so that when the luggage is heavy or a user pushes and pulls the luggage case with too much force and moves the luggage case with violent operation, the elastic pin is easily damaged, and the pull rod cannot be used.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pull rod structure with adjustable height, which aims to solve the problem that a pull rod in the prior art is easy to damage; meanwhile, the utility model also aims to provide a travel suitcase using the pull rod structure.

In order to achieve the purpose, the pull rod structure with adjustable height adopts the following technical scheme: a pull rod structure with adjustable height comprises a mounting tube fixedly arranged in a box body, wherein a cylindrical pull rod is movably arranged in the mounting tube, an elastic pin and an elastic pressing block for controlling the elastic pin to extend and retract are arranged on the pull rod, and a plurality of positioning holes matched with the elastic pin in a positioning manner are arranged on the mounting tube at intervals along the length direction of the mounting tube; the upper end of the installation pipe is provided with a limiting plate, the limiting plate is provided with a rectangular channel communicated with the inner cavity of the installation pipe, two opposite side surfaces of the rectangular channel are respectively provided with an arc-shaped groove for matching and installing the outer peripheral surface of the pull rod, the pull rod is provided with at least two pairs of rotation stopping surfaces at intervals along the length direction of the pull rod, the end part of the arc-shaped groove forms a rotation stopping part matched with the rotation stopping surfaces on the pull rod in a rotation stopping way, and when the elastic pin is matched with the corresponding positioning hole, the corresponding rotation stopping surfaces on the pull rod are matched with the rotation stopping parts on the limiting plate in a stopping way.

And the mounting pipe is also provided with a limiting hole for limiting the pull rod when the pull rod is completely retracted into the mounting pipe.

The pull rod is provided with extrusion parts at intervals along the length direction of the pull rod, and the two corresponding extrusion surfaces of the extrusion parts form the rotation stopping surface.

The end part of the pull rod, which is arranged in the mounting pipe, is rotatably provided with a connecting rod, the end part of the connecting rod is hinged with a connecting column, and the pull rod, the connecting rod and the connecting column are arranged in the limiting plate and the mounting pipe together.

The tip of pull rod is provided with the holding rod, and the elasticity is pressed the briquetting and is set up on the holding rod, still is provided with adjusting button and display screen on the holding rod.

The luggage case adopts the following technical scheme: a luggage case comprises a case body and a pull rod structure arranged on the case body, wherein the pull rod structure comprises an installation pipe fixedly arranged in the case body, a cylindrical pull rod is movably arranged in the installation pipe, an elastic pin and an elastic pressing block for controlling the elastic pin to extend and retract are arranged on the pull rod, and a plurality of positioning holes matched with the elastic pin in a positioning mode are formed in the installation pipe at intervals along the length direction of the installation pipe; the upper end of the installation pipe is provided with a limiting plate, the limiting plate is provided with a rectangular channel communicated with the inner cavity of the installation pipe, two opposite side surfaces of the rectangular channel are respectively provided with an arc-shaped groove for matching and installing the outer peripheral surface of the pull rod, the pull rod is provided with at least two pairs of rotation stopping surfaces at intervals along the length direction of the pull rod, the end part of the arc-shaped groove forms a rotation stopping part matched with the rotation stopping surfaces on the pull rod in a rotation stopping way, and when the elastic pin is matched with the corresponding positioning hole, the corresponding rotation stopping surfaces on the pull rod are matched with the rotation stopping parts on the limiting plate in a stopping way.

The utility model has the beneficial effects that: make the telescopic link among the prior art with the pull rod itself, keep its wholeness, the intensity of pull rod has been increased, when the different length is pulled out to the needs pull rod, rely on the face of splining on the pull rod simultaneously and the cooperation atress of splining of the splining portion on the limiting plate of splining through elastic pin and locating hole location fit, replace the dependence elastic pin atress among the prior art, the atress intensity is bigger and be difficult to damage, the life of pull rod has been prolonged, the altitude mixture control of pull rod has been realized, and the crowd who is applicable to the difference.

Drawings

FIG. 1 is a schematic structural view of one embodiment of a piece of luggage of the present invention;

FIG. 2 is a schematic view of the deformed luggage case of FIG. 1;

FIG. 3 is a schematic view of the structure of the drawbar locking arrangement of FIG. 1;

FIG. 4 is a schematic structural view of the hinge rod fixing structure of FIG. 1;

FIG. 5 is an enlarged view of a portion of FIG. 1 at A;

FIG. 6 is a schematic view of the steering system of the traveling case of FIG. 1;

FIG. 7 is a schematic structural view of a linkage rod of the steering system;

FIG. 8 is a schematic structural view of the drawbar arrangement;

fig. 9 is a partial enlarged view at B in fig. 8;

FIG. 10 is a schematic view of the locking device of the drawbar in the second embodiment of the suitcase according to the utility model;

fig. 11 is a schematic structural view showing a fixing structure of a hinge lever in a third embodiment of a travel suitcase according to the present invention.

Detailed Description

The first embodiment of the luggage case of the utility model, as shown in fig. 1-9, comprises a case body 1, wherein the case body is provided with power wheels 3 and direction wheels 4. The front part of the box body is provided with an installation space for the sub-box body 2 to be installed and placed, the upper end of the sub-box body is hinged with the box body, the sub-box body can be turned over to the upper part of the box body along a hinge axis to form a seat, and the sub-box body can also be turned over to the installation space. The box body is further provided with a pull rod structure, the pull rod structure comprises an installation pipe 44 installed in the box body and a cylindrical pull rod 5 installed in the installation pipe in a guiding mode, the end portion, installed in the installation pipe, of the pull rod rotates to be provided with a connecting rod 43, and the end portion of the connecting rod is hinged to be connected with a connecting column 6. The end part of the pull rod is provided with a holding rod 7, and the holding rod 7 is provided with a control button. The control buttons include a speed-adjusting knob 33 and an on-off button 9 and buttons for adjusting the gear. The holding rod is also provided with a display screen 8.

The pull rod is provided with an elastic pin 42 and an elastic pressing block 10 for controlling the elastic pin to extend and retract. A plurality of positioning holes 29 matched with the elastic pins in a positioning way are arranged on the mounting pipe at intervals along the length direction of the mounting pipe, and the number of the positioning holes is three in the embodiment. The upper end of the installation pipe is provided with a limiting plate 13, the limiting plate is provided with a rectangular channel 45 communicated with the inner cavity of the installation pipe, and two opposite side surfaces of the rectangular channel are respectively provided with an arc-shaped groove 46 for the outer peripheral surface of the pull rod to be matched in installation. At least two pairs of rotation stopping surfaces 14 are arranged on the pull rod at intervals along the length direction of the pull rod, and the number of the rotation stopping surfaces is 3 in the embodiment. The end part of the arc-shaped groove is provided with a rotation stopping part 45 which is in rotation stopping fit with the rotation stopping surface on the pull rod, and when the elastic pin is matched with the corresponding positioning hole, the corresponding rotation stopping surface on the pull rod is in stop fit with the rotation stopping part on the limiting plate. The mounting tube is also provided with a stop hole 28 for stopping the pull rod when it is fully retracted into the mounting tube. The pull rod is provided with extrusion parts at intervals along the length direction, and the two corresponding extrusion surfaces of the extrusion parts form the rotation stopping surface. The pull rod, the connecting rod and the connecting column are arranged in the limiting plate and the mounting pipe together.

The box body is also provided with a pull rod locking device 11. The pull rod locking device comprises a hinge rod 17 hinged to the end portion of a box body, a limiting clamping groove 18 used for limiting the pull rod after the pull rod is turned over is arranged on the hinge rod 17, and a hinge rod fixing structure 12 used for limiting and fixing the free end of the hinge rod is further arranged at the end portion of the box body. The hinged rod is also provided with a clamping hook 20 which is used for limiting and matching with a limiting groove on the end part of the sub-box body of the luggage box. Be provided with card hole 22 on the free end of articulated arm, articulated arm fixed knot constructs including mounting bracket 23, is provided with cardboard 24 through the articulated shaft is articulated on the mounting bracket, has on the cardboard with the sincere complex trip portion 25 of card hole card, is provided with the torsional spring on the articulated shaft. The upper top end of the clamping hook part is provided with an arc-shaped jacking surface 26, and the hinged free end is provided with a jacking part 41 which downwards jacks the arc-shaped jacking surface to enable the clamping plate to rotate and automatically realize the clamping and catching matching of the clamping hook part and the clamping hole. The limiting catch 18 on the hinge lever in this embodiment is formed by a hinge lever bend 19. The hinged rod is also hinged with a handle 21. The pull rod can rotate in the limiting clamping groove, and the limiting clamping groove is used for limiting the pull rod to move in the front-back direction.

The direction wheel of the luggage case in the embodiment drives the direction wheel to rotate by means of the pull rod 5 and the steering system. Specifically, a through groove is formed in the front end face of the box body, the steering system comprises a steering shifting fork 15 which extends out of the box body through the through groove, the pull rod enters the steering shifting fork after rotating for 90 degrees, a steering jacking face 14 matched with the inner side faces of two fork arms of the shifting fork is arranged on the pull rod, and the steering jacking face is formed by a rotation stopping face at the lowest end of the pull rod. The steering system also comprises a support rod 30 arranged in the box body, wherein the two direction wheels 4 are rotationally arranged on the support rod, and are connected through a connecting rod 34 to realize synchronous rotation. The part of the steering shifting fork in the box body is hinged with the connecting rod. A left return spring 31 and a right return spring 32 are arranged between the part of the steering fork located in the box body and the supporting rod, and the first return spring and the second return spring are used for facilitating automatic return of the steering wheel. The holding rod is twisted left and right, so that the steering pushing surface of the pull rod drives the steering shifting fork to move, and the two direction wheels are driven to rotate or rotate rightwards. In this embodiment, the front, rear, left and right positions are forward of the end where the pull rod locking device is disposed. The supporting rods comprise first supporting rods connected to the left side face and the right side face in the box body, and second supporting rods and third supporting rods connected to the first supporting rods and the front side face of the box body, the second supporting rods and the third supporting rods are arranged at left and right intervals, and the two direction wheels are rotatably installed on the second supporting rods and the third supporting rods respectively. In this embodiment, two protection covers 16 covering the steering fork and disposed at left and right intervals are further disposed at the through groove on the front side surface of the box body, and each protection cover corresponds to each yoke one by one.

The luggage case of the embodiment has a plurality of modes when in use:

the first mode is the mode of drawing to one side of travelling basket at ordinary times, pulls out the pull rod this moment and makes the second locating hole location fit of the elastic pin on the pull rod and installation pipe, and the pull rod can not rotate this moment, can rely on the control button on the holding rod to realize the helping hand, is fit for heavier suitcase and climbing use, can adjust the tensile length that stretches out the installation pipe under this mode.

The second mode is motion mode, and pull rod and spliced pole pull out the slide rotate the pull rod to vertical direction to the leading flank of box, rely on pull rod locking device to lock the pull rod fixed, and the son box can not overturn this moment, also is fixed by pull rod locking device, and the user can sit on the box or squat on the box this moment, relies on the control button on the holding rod to realize motion mode, is fit for the mode of overtaking for a journey fast, and this suitcase can reach 30km/h the fastest.

The third mode is the mode of riding, and pull rod and spliced pole pull out the slide, rotate pull rod to vertical direction to the leading flank of box, rely on pull rod locking device to lock the pull rod fixed, and the sub-box body rotates backward to the box top at this moment and forms the seat, as shown in fig. 2, the user can sit on the seat, leans on the control button on the holding rod to realize the mode of riding, is fit for the mode of overtaking for the road fast, and this suitcase can reach 30km/h the fastest.

The second embodiment of the riding luggage case disclosed by the utility model is different from the first embodiment only in the structure of the hinge rod, as shown in fig. 10, in the first embodiment, the space between the handle and the hinge rod is small because the limiting clamping groove is formed by bending the hinge rod upwards, and the hand entering the handle is somewhat difficult for some users. In this embodiment, the hinge rod 17 is a U-shaped rod, two U-shaped plates 36 are disposed on the middle rod portion of the U-shaped rod, and the two ends of the handle 21 are respectively hinged to the corresponding U-shaped plates, so that the space between the hinge rod and the handle is increased. The limit catch 18 is formed by an arcuate plate 35 attached to the intermediate pole section.

The third embodiment of the riding luggage case of the utility model is different from the first embodiment only in the structure of the fixing structure of the hinge rod, as shown in fig. 11, and the probability of the hinge mode of the third embodiment touching the hinge rod during the consignment process and other actions is higher, which leads to the misoperation of opening the sub-case body or the pull rod. The horizontal mode is used instead in this embodiment. Specifically be provided with the card hole on the free end of hinge rod, hinge rod fixed knot constructs including mounting bracket 23, and the level direction is provided with kelly 37 on the mounting bracket, is provided with pressure spring 38 on the kelly, and the tip of kelly has the sincere portion 39 of seizing the sincere complex of card hole card. The upper part of the clamping part is provided with a slope surface 40, and the hinged free end is provided with a pressing part which downwards presses the slope surface so as to lead the clamping rod to translate and automatically realize the clamping matching of the clamping part and the clamping hole.

In other embodiments of the utility model, the rear end surface of the box body is provided with four direction wheels, which is convenient for people to walk by pushing and pulling the suitcase vertically; the steering system can also be replaced by the existing reduced-size automobile steering system; the free end of the hinged rod can also be elastically provided with a clamping pin, and the mounting frame of the hinged rod fixing structure is provided with a clamping hole; the case body can also be the case body of a common luggage case without a sub-case body.

The embodiment of the height-adjustable drawbar structure according to the present invention is the same as the drawbar structure in the above-mentioned embodiments of the luggage case, and the details thereof are not repeated herein.

Claims

1. A pull rod structure with adjustable height, its characterized in that: the device comprises a mounting tube fixedly arranged in a box body, wherein a cylindrical pull rod is movably arranged in the mounting tube, an elastic pin and an elastic pressing block for controlling the elastic pin to extend and retract are arranged on the pull rod, and a plurality of positioning holes matched with the elastic pin in a positioning way are arranged on the mounting tube at intervals along the length direction of the mounting tube; the upper end of the installation pipe is provided with a limiting plate, the limiting plate is provided with a rectangular channel communicated with the inner cavity of the installation pipe, two opposite side surfaces of the rectangular channel are respectively provided with an arc-shaped groove for matching and installing the outer peripheral surface of the pull rod, the pull rod is provided with at least two pairs of rotation stopping surfaces at intervals along the length direction of the pull rod, the end part of the arc-shaped groove forms a rotation stopping part matched with the rotation stopping surfaces on the pull rod in a rotation stopping way, and when the elastic pin is matched with the corresponding positioning hole, the corresponding rotation stopping surfaces on the pull rod are matched with the rotation stopping parts on the limiting plate in a stopping way.

2. The height adjustable tie rod structure of claim 1, wherein: and the mounting pipe is also provided with a limiting hole for limiting the pull rod when the pull rod is completely retracted into the mounting pipe.

3. The height adjustable tie rod structure of claim 1, wherein: the pull rod is provided with extrusion parts at intervals along the length direction of the pull rod, and the two corresponding extrusion surfaces of the extrusion parts form the rotation stopping surface.

4. A height adjustable tie rod structure according to any one of claims 1 to 3 wherein: the end part of the pull rod, which is arranged in the mounting pipe, is rotatably provided with a connecting rod, the end part of the connecting rod is hinged with a connecting column, and the pull rod, the connecting rod and the connecting column are arranged in the limiting plate and the mounting pipe together.

5. The height adjustable tie rod structure of claim 1, wherein: the tip of pull rod is provided with the holding rod, and the elasticity is pressed the briquetting and is set up on the holding rod, still is provided with adjusting button and display screen on the holding rod.

6. The utility model provides a luggage case, includes the box and installs the pull rod structure on the box, its characterized in that: the pull rod structure comprises a mounting pipe fixedly arranged in the box body, a cylindrical pull rod is movably arranged in the mounting pipe, an elastic pin and an elastic pressing block for controlling the elastic pin to extend and retract are arranged on the pull rod, and a plurality of positioning holes matched with the elastic pin in a positioning mode are arranged on the mounting pipe at intervals along the length direction of the mounting pipe; the upper end of the installation pipe is provided with a limiting plate, the limiting plate is provided with a rectangular channel communicated with the inner cavity of the installation pipe, two opposite side surfaces of the rectangular channel are respectively provided with an arc-shaped groove for matching and installing the outer peripheral surface of the pull rod, the pull rod is provided with at least two pairs of rotation stopping surfaces at intervals along the length direction of the pull rod, the end part of the arc-shaped groove forms a rotation stopping part matched with the rotation stopping surfaces on the pull rod in a rotation stopping way, and when the elastic pin is matched with the corresponding positioning hole, the corresponding rotation stopping surfaces on the pull rod are matched with the rotation stopping parts on the limiting plate in a stopping way.

7. The luggage of claim 6, wherein: and the mounting pipe is also provided with a limiting hole for limiting the pull rod when the pull rod is completely retracted into the mounting pipe.

8. The luggage of claim 6, wherein: the pull rod is provided with extrusion parts at intervals along the length direction of the pull rod, and the two corresponding extrusion surfaces of the extrusion parts form the rotation stopping surface.

9. An item of luggage according to any one of claims 6 to 8, wherein: the end part of the pull rod, which is arranged in the mounting pipe, is rotatably provided with a connecting rod, the end part of the connecting rod is hinged with a connecting column, and the pull rod, the connecting rod and the connecting column are arranged in the limiting plate and the mounting pipe together.

10. The luggage of claim 6, wherein: the tip of pull rod is provided with the holding rod, and the elasticity is pressed the briquetting and is set up on the holding rod, still is provided with adjusting button and display screen on the holding rod.