Adjustable travel backpack frame

Abstract

The utility model relates to the technical field of travel knapsacks, in particular to an adjustable travel knapsack frame, which is characterized in that an upper supporting plate for capacity expansion is mounted on a back plate in a sliding manner, a lower supporting plate for capacity expansion is mounted on the back plate in a sliding manner, and a bidirectional threaded rod for driving the upper supporting plate and the lower supporting plate is rotatably mounted on the back plate; a shifting wheel is fixedly mounted on the two-way threaded rod, and a bag is mounted on the upper supporting plate and the lower supporting plate; the thumb wheel drives the bidirectional threaded rod to rotate clockwise, due to the fact that the upper supporting plate, the lower supporting plate and the bidirectional threaded rod are connected in a threaded mode, the bidirectional threaded rod rotates clockwise to push the upper supporting plate and the lower supporting plate to the two ends at the same time, when the upper supporting plate and the lower supporting plate slide to the two ends, the bag is pulled to the two ends, and the folding part of the bag is unfolded. The multifunctional backpack is simple in structure and convenient to use, more articles can be stored, the size of the backpack can be adjusted according to changes in a travel, and the effect of meeting the use requirements in the travel can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to travel backpack technical field, especially in adjustable formula tourism backpack frame. BACKGROUND

[0002] In the course of travel, a comfortable and practical backpack frame is essential for travelers, in practical application, adjustable formula tourism backpack frame usually involves the following technologies:

[0003] 1, frame structure technology: the common frame adopts light metal material, such as aluminum alloy, and constructs the basic frame that conforms to the human back curve, provides stable support for the backpack;

[0004] 2, adjusting mechanism technology: including shoulder strap adjusting mechanism, the length and angle of shoulder strap can be adjusted to fit the width and position of different travelers' shoulders, back angle adjusting mechanism, etc.

[0005] 3, fixing and connecting technology: various fasteners, straps and other are used to firmly fix the backpack on the backpack frame, ensure that the backpack does not shake in the walking process, the connecting part is usually designed with adjustable structure to adapt to different sizes and shapes of backpack.

[0006] In the course of travel, travelers usually select a backpack with appropriate size to meet the storage needs according to their own estimated amount of carrying goods and convenience of use, however, during the journey, the situation often changes, when the traveler buys souvenirs, local specialties, etc., the original storage space planning may no longer be applicable, unable to meet the use demand in the journey. INVENTION CONTENTS

[0007] In view of the deficiencies of the prior art, the utility model provides an adjustable formula tourism backpack frame, which solves the technical problem that in the course of travel, travelers usually select a backpack with appropriate size to meet the storage needs according to their own estimated amount of carrying goods and convenience of use, however, during the journey, the situation often changes, when the traveler buys souvenirs, local specialties, etc., the original storage space planning may no longer be applicable, unable to meet the use demand in the journey.

[0008] To achieve the above purpose, the utility model is realized by the following technical schemes:

[0009] The utility model provides an adjustable travel backpack frame, including backboard, the upper supporting plate for expansion is slidably installed on backboard, the lower supporting plate for expansion is slidably installed on backboard, the two -way screw rod for driving upper supporting plate, lower supporting plate is rotatably installed on backboard, two -way screw rod is fixedly installed with the handle wheel, the bag is installed on upper supporting plate, lower supporting plate, and upper supporting plate, lower supporting plate and two -way screw rod are screw connection, the top of bag is fixedly installed with the top of upper supporting plate, and the bottom of bag is fixedly connected with lower supporting plate, and the lower part of bag has the folding structure.

[0010] Preferably: the symmetrical rotating block is rotatably installed on the lower supporting plate; two limiting holes are opened at ninety degrees around the rotating shaft of the rotating block.

[0011] Preferably: the wheel frame is rotatably installed on the rotating block; two limiting holes are opened at ninety degrees staggered at the top of the wheel frame.

[0012] Preferably: the roller is rotatably installed on the wheel frame.

[0013] Preferably: the limiting rod is slidably installed on the lower supporting plate.

[0014] Preferably: the first spring is installed on the limiting rod.

[0015] Preferably: the pin rod is slidably installed on the rotating block.

[0016] Preferably: the second spring is installed on the pin rod.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] I. If the storage space needs to be increased when purchasing local specialties during the journey, the handle wheel is rotated clockwise, the handle wheel drives the two -way screw rod to rotate clockwise, the two -way screw rod rotates clockwise and pushes the upper supporting plate and the lower supporting plate to two ends at the same time because the upper supporting plate, the lower supporting plate and the two -way screw rod are screw connection, the upper supporting plate and the lower supporting plate slide to two ends respectively, the bag is pulled to two ends when the upper supporting plate and the lower supporting plate slide to two ends, the folding part of the bag is unfolded to store more articles, if the food carried during the journey is eaten, the handle wheel can be rotated counterclockwise, the upper supporting plate and the lower supporting plate slide inwards, and the bag is folded to reduce the area occupied by the backpack, the size of the backpack can be adjusted according to the change during the journey, and the effect that the use demand during the journey can be met is achieved.

[0019] When the loaded things are more, it is more laborious to carry, the limiting rod can be pulled, the limiting rod slides outwards to overcome the elastic force of the first spring, then the two rotating blocks are rotated by ninety degrees, the wheel frame is stretched out, then the limiting rod is loosened, the limiting rod will reset under the elastic force of the first spring, the reset limiting rod will be inserted into the limiting hole in the top of the rotating block to fix the rotating block, then the pin rod is pulled, the pin rod slides outwards to overcome the elastic force of the second spring, then the wheel frame is rotated by ninety degrees, then the pin rod is loosened, the pin rod will reset under the elastic force of the second spring, the pin rod resets and is inserted into the limiting hole in the top of the wheel frame to limit the wheel frame, after being unfolded, the effect that it is convenient to move after loading heavy objects is achieved by pulling the supporting plate and relying on the rolling of the rollers. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and can be implemented according to the content of the specification, the following preferred embodiments of the utility model are described in detail below with the help of the drawings.

[0021] Figure 1 It is the bag structure diagram of the utility model;

[0022] Figure 2 It is the back plate cross-sectional structure diagram of the utility model;

[0023] Figure 3 It is the cross-sectional structure diagram of the utility model;

[0024] Figure 4 It is the lower supporting plate cross-sectional structure diagram of the utility model;

[0025] Figure 5 It is the rotating block cross-sectional structure diagram of the utility model.

[0026] Legend: 1, back plate;2, upper supporting plate;3, lower supporting plate;4, two-way threaded rod;5, handle wheel;6, bag;7, rotating block;8, wheel frame;9, roller;11, limiting rod;12, first spring;13, pin rod;14, second spring. DETAILED DESCRIPTION

[0027] The embodiment of the application provides an adjustable travel backpack frame, effectively solves the technical problem that in the process of traveling, travelers usually select a backpack with appropriate size according to the estimated amount of carried items and the convenience of taking, to meet the storage demand, however, in the process of traveling, the situation often changes, when the travelers purchase souvenirs, local specialties and the like, the original storage space planning may no longer be applicable, and the use demand in the process of traveling cannot be met, when the local specialties and the like are purchased and the storage space needs to be increased, the dial is turned clockwise, the dial drives the bidirectional threaded rod to rotate clockwise, since the upper supporting plate, the lower supporting plate and the bidirectional threaded rod are threadedly connected, the bidirectional threaded rod rotates clockwise and simultaneously pushes the upper supporting plate and the lower supporting plate to the two ends, the upper supporting plate and the lower supporting plate slide to the upper end and the lower end respectively, when the upper supporting plate and the lower supporting plate slide to the two ends, the bag is pulled to the two ends, the folded part of the bag is unfolded, so that more items can be stored, if the carried food is eaten in the process of traveling, the dial can be turned counterclockwise, the upper supporting plate and the lower supporting plate slide inward, and the bag is folded, so that the area occupied by the backpack is reduced, the size of the backpack can be adjusted according to the change in the process of traveling, the use demand in the process of traveling is met, when more things are loaded, the limiting rod is pulled, the limiting rod slides outward under the elastic force of the first spring, the two rotating blocks are rotated by 90 degrees, the wheel frame is stretched out, then the limiting rod is released, the limiting rod is reset under the elastic force of the first spring, the reset limiting rod is inserted into the limiting hole at the top end of the rotating block, the rotating block is fixed, then the pin rod is pulled, the pin rod slides outward under the elastic force of the second spring, then the wheel frame is rotated by 90 degrees, then the pin rod is released, the pin rod is reset under the elastic force of the second spring, after the pin rod is reset, the pin rod is inserted into the limiting hole at the top end of the wheel frame, the wheel frame is limited, after being unfolded, the upper supporting plate is pulled, and the rolling effect of the roller is achieved, so that the backpack is convenient to move after loading heavy objects.

[0028] Embodiment

[0029] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 indicated, the technical scheme in the embodiment of the application effectively solves the technical problem that in the process of traveling, travelers usually select a backpack with appropriate size according to the estimated amount of carried items and the convenience of taking, to meet the storage demand, however, in the process of traveling, the situation often changes, when the travelers purchase souvenirs, local specialties and the like, the original storage space planning may no longer be applicable, and the use demand in the process of traveling cannot be met, the general idea is as follows:

[0030] The utility model provides a kind of adjustable travel backpack frame for the problems in prior art, including backboard 1, for expansion, upper supporting plate 2 is slidably installed on backboard 1, for expansion, lower supporting plate 3 is slidably installed on backboard 1, for driving upper supporting plate 2, lower supporting plate 3, bidirectional screw rod 4 is rotatably installed on backboard 1, bidirectional screw rod 4 is fixedly installed with handle 5, bag 6 is installed on upper supporting plate 2 and lower supporting plate 3;Upper supporting plate 2, lower supporting plate 3 and bidirectional screw rod 4 are threadedly connected.

[0031] The top end of bag 6 is fixedly installed with the top end of upper supporting plate 2, and the bottom end of bag 6 is fixedly connected with lower supporting plate 3, and the lower part of bag 6 has a folding structure, and rotating block 7 is rotatably installed on lower supporting plate 3 in a symmetrical manner;Two limiting holes are formed at ninety degrees around the rotation axis of rotating block 7.

[0032] Rotating block 7 is rotatably installed with wheel frame 8, and the top end of wheel frame 8 is formed with two limiting holes at ninety degrees staggered, wheel frame 8 is rotatably installed with roller 9, limiting rod 11 is slidably installed on lower supporting plate 3, first spring 12 is installed on limiting rod 11, pin rod 13 is slidably installed on rotating block 7, and second spring 14 is installed on pin rod 13.

[0033] Backboard 1: carbon fiber material, light in weight, easy to carry, with a curve that matches the surface of the human body, as the main structure of the backpack frame, provides basic support for the entire backpack frame, and the curve design that fits the human body can increase the comfort of the user when carrying;

[0034] Upper supporting plate 2: carbon fiber material, light in weight, easy to carry, slidably installed on backboard 1, used to realize the expansion function of the backpack frame, under the drive of bidirectional screw rod 4, it can slide upwards along backboard 1, cooperate with lower supporting plate 3, drive bag 6 to unfold or fold, thereby adjusting the storage space size of the backpack frame;

[0035] Lower supporting plate 3: carbon fiber material, light in weight, easy to carry, also slidably installed on backboard 1, together with upper supporting plate 2, undertakes the expansion task of the backpack frame, under the action of bidirectional screw rod 4, it slides downwards along backboard 1, cooperates with upper supporting plate 2, changes the containing space of the backpack frame by stretching or shrinking bag 6, in addition, it is also the installation carrier of rotating block 7, limiting rod 11 and other components;

[0036] Bidirectional screw rod 4: carbon fiber material, light in weight, easy to carry, rotatably installed on backboard 1, drives upper supporting plate 2 and lower supporting plate 3 to slide through thread connection, when bidirectional screw rod 4 rotates, according to the screw transmission principle, pushes upper supporting plate 2 and lower supporting plate 3 to move to upper end and lower end respectively, and then realizes the adjustment of the storage space of the backpack frame, is the key driving component to realize the expansion and contraction of the backpack frame;

[0037] Dial wheel 5: carbon fiber material, light in weight, easy to carry, fixedly installed on the bidirectional threaded rod 4, the bidirectional threaded rod 4 can be rotated by dialing the dial wheel 5, providing an operating force point for the rotation of the bidirectional threaded rod 4, facilitating the user to control the rotation direction and angle of the bidirectional threaded rod 4, thereby realizing the control of the sliding of the upper supporting plate 2 and the lower supporting plate 3, and finally achieving the purpose of adjusting the storage space of the backpack frame;

[0038] Bag 6: installed on the upper supporting plate 2 and the lower supporting plate 3, the top end is fixed with the top end of the upper supporting plate 2, the bottom end is fixedly connected with the lower supporting plate 3, and the lower part has a folding structure, when the upper supporting plate 2 and the lower supporting plate 3 slide, the bag 6 is stretched or shrunk accordingly, by unfolding or folding the lower structure, the expansion or shrinkage of the storage space of the backpack frame is realized, and the function of increasing or reducing the space of the backpack to accommodate articles is achieved;

[0039] Rotary block 7: symmetrically rotatably installed on the lower supporting plate 3, two limiting holes are opened at ninety degrees around the rotation axis, when loading heavy objects, the rotary block 7 can be rotated to make the wheel frame 8 extend, providing a support structure for changing the structure of the backpack frame to facilitate the movement of heavy objects, and being fixed through cooperation with the limiting rod 11;

[0040] Wheel frame 8: rotatably installed on the rotary block 7, two limiting holes are opened at ninety degrees at the top end, after the rotary block 7 is rotated and unfolded, the wheel frame 8 is further rotated and unfolded, increasing the support structure after the backpack frame is unfolded, being fixed through cooperation with the pin rod 13, and jointly acting with the rotary block 7 to change the shape of the backpack frame when the backpack is loaded with heavy objects, facilitating movement;

[0041] Roller 9: rotatably installed on the wheel frame 8, when the backpack is loaded with heavy objects and the upper supporting plate 2 is pulled, the roller 9 can roll, assisting the whole backpack frame to move more easily under the condition of loading heavy objects, playing the role of reducing friction and assisting movement;

[0042] Limiting rod 11: slidably installed on the lower supporting plate 3, when loading heavy objects needs to change the structure of the backpack frame, the limiting rod 11 is pulled to slide outward against the elastic force of the first spring 12, after the rotary block 7 is rotated in place, the limiting rod 11 is released, and it is reset under the elastic force of the first spring 12 and inserted into the limiting hole at the top end of the rotary block 7, fixing the rotary block 7, playing the role of fixing the position of the rotary block 7;

[0043] First spring 12: installed on the limiting rod 11, providing elastic force for the limiting rod 11, so that it can reset after being pulled, in order to be inserted into the limiting hole of the rotary block 7 to fix the rotary block 7, assisting the limiting rod 11 to complete the fixing operation of the rotary block 7;

[0044] Pin rod 13: slidingly installed on the rotating block 7, similar to the limiting rod 11, during the rotation and expansion of the wheel frame 8, pull the pin rod 13 to overcome the elastic force of the second spring 14 to slide outward, after the wheel frame 8 is rotated to the position, release the pin rod 13, so that it resets under the action of the elastic force of the second spring 14 and inserts into the limiting hole at the top end of the wheel frame 8 to limit and fix the wheel frame 8;

[0045] Second spring 14: installed on the pin rod 13, provides elastic force for the pin rod 13, so that it can reset after being pulled to insert into the limiting hole of the wheel frame 8 to fix the wheel frame 8, and assist the pin rod 13 to complete the fixing operation of the wheel frame 8.

[0046] Working principle:

[0047] First step, the backboard 1 has a curve consistent with the surface of the human body, which can increase the comfort of use, during the journey, if you buy local specialties and need to increase storage space, turn the dial 5 clockwise, the dial 5 drives the two-way threaded rod 4 to rotate clockwise, because the upper supporting plate 2, the lower supporting plate 3 and the two-way threaded rod 4 are screw connected, so the two-way threaded rod 4 rotates clockwise will simultaneously push the upper supporting plate 2 and the lower supporting plate 3 to the two ends, so that the upper supporting plate 2 and the lower supporting plate 3 slide to the upper and lower ends respectively, when the upper supporting plate 2 and the lower supporting plate 3 slide to the two ends, the bag 6 will be pulled to the two ends, so that the folded part of the bag 6 is unfolded to be able to store more items, if the food carried during the journey is eaten, the dial 5 can be turned counterclockwise, so that the upper supporting plate 2 and the lower supporting plate 3 slide inward, so that the bag 6 is folded, reducing the area occupied by the backpack, which can adjust the size of the backpack according to the changes during the journey, achieving the effect of meeting the use requirements during the journey.

[0048] Second step, when the things are more, it is more laborious to carry, pull the limiting rod 11 to make the limiting rod 11 slide outward against the elastic force of the first spring 12, then rotate the two rotating blocks 7 by ninety degrees to make the wheel frames 8 extend, then release the limiting rod 11, the limiting rod 11 will reset under the action of the elastic force of the first spring 12, the reset limiting rod 11 will be inserted into the limiting hole at the top end of the rotating block 7 to fix the rotating block 7, then pull the pin rod 13 to make the pin rod 13 slide outward against the elastic force of the second spring 14, then rotate the wheel frame 8 by ninety degrees, then release the pin rod 13, the pin rod 13 will reset under the action of the elastic force of the second spring 14, the pin rod 13 will be inserted into the limiting hole at the top end of the wheel frame 8 to limit the wheel frame 8 after resetting, after unfolding, by pulling the upper supporting plate 2, relying on the rolling of the roller 9, achieving the effect of facilitating movement after loading heavy objects.

[0049] Finally, it should be noted that: apparently, the above embodiments are merely examples for clearly illustrating the utility model, and are not limited to the implementation. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the implementation. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. An adjustable backpack rack, comprising a back panel (1), characterized in that, An upper support plate (2) for expansion is slidably mounted on the back plate (1), a lower support plate (3) for expansion is slidably mounted on the back plate (1), a bidirectional threaded rod (4) for driving the upper support plate (2) and the lower support plate (3) is rotatably mounted on the back plate (1), a dial wheel (5) is fixedly mounted on the bidirectional threaded rod (4), and bags (6) are mounted on the upper support plate (2) and the lower support plate (3). The upper support plate (2), the lower support plate (3) and the bidirectional threaded rod (4) are threaded together. The top of the bag (6) is fixedly installed with the top of the upper support plate (2), and the bottom of the bag (6) is fixedly connected with the lower support plate (3). The lower part of the bag (6) has a folding structure.

2. The adjustable backpack rack as described in claim 1, characterized in that, The lower support plate (3) is symmetrically and rotatably mounted with rotating blocks (7); Two limiting holes are provided at a 90-degree angle around the rotation axis of the rotating block (7).

3. An adjustable travel backpack rack as described in claim 2, characterized in that, A wheel frame (8) is rotatably mounted on the rotating block (7); Among them, the top of the wheel frame (8) has two limiting holes that are staggered at ninety degrees.

4. An adjustable backpack rack as described in claim 3, characterized in that, Rollers (9) are rotatably mounted on the wheel frame (8).

5. An adjustable travel backpack rack as described in claim 1, characterized in that, A limit rod (11) is slidably installed on the lower support plate (3).

6. An adjustable backpack rack as described in claim 5, characterized in that, A first spring (12) is installed on the limiting rod (11).

7. An adjustable travel backpack rack as described in claim 2, characterized in that, A pin (13) is slidably mounted on the rotating block (7).

8. An adjustable backpack rack as described in claim 7, characterized in that, A second spring (14) is installed on the pin (13).

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