Frame structure of draw-bar box

Abstract

The utility model provides a draw-bar box frame structure, which belongs to the technical field of draw-bar boxes, and comprises two support frames, the two support frames are rotatably connected through a plurality of connecting hinges, the surface of the support frame on one side is rotatably connected with a pull rod, the surface of the support frame on one side is provided with a limiting mechanism for blocking the pull rod, and the limiting mechanism is connected with the pull rod. Two universal wheels are installed at the bottoms of one sides of the two supporting frames, a plurality of damping mechanisms are installed on the surfaces of the opposite inner sides of the two supporting frames, a pulling rod can be released through a limiting mechanism, and at the moment, a user can adjust the angle of the pulling rod; and then the supporting frame is pulled through the pulling rod, so that the probability that the supporting frame is obliquely moved is avoided, the labor intensity generated when a user moves the supporting frame is reduced, the pulling rod is limited through the limiting mechanism when the frame structure is not used, and the space utilization rate of the frame structure is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of trolley cases, and in particular relates to a trolley case frame structure. Background Art

[0002] Trolley suitcases are one of the essential carrying tools for frequent business trips or tourists. For the common trolley suitcases currently on the market, a U-shaped trolley with a telescopic positioning function is usually set on the top of the suitcase body, and wheels are set at the bottom of the suitcase body. When the user wants to drag the suitcase, the U-shaped trolley can be pulled up to position it. After use, the U-shaped trolley can be pressed down so that the telescopic rod structure can be retracted into the suitcase body. Since such trolley suitcases are quite simple to use and operate, they have a very common and extensive demand in the market.

[0003] The existing public patent number is CN201426466Y, and the public name is a practical trolley case, including a case frame, the case frame including a front frame, a rear frame and a trolley assembly, the front frame and the rear frame are connected by a connecting rod, and the trolley assembly is connected to the rear frame. The utility model further improves the case frame, and connects the connecting rods to form a case frame through a three-way pipe fitting, which is easy to assemble and light in weight. In particular, the trolley and the connecting rod of the case frame are cleverly combined together, eliminating the original independent trolley structure, further reducing the weight of the case. The trolley case made with such a structure is not only light in weight and saves materials, but also has a firm structure and is durable.

[0004] However, when using the above-mentioned suitcase, the user needs to tilt the suitcase before pulling it, and the weight of the objects inside the suitcase is too large, which will cause a lot of labor intensity to the user and further cause a lot of fatigue to the user. Utility Model Content

[0005] The purpose of the utility model is to provide a trolley case frame structure, aiming to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A trolley case frame structure comprises: two support frames, the two support frames are rotatably connected via a plurality of connecting hinges, a pull rod is rotatably connected to the surface of one of the support frames, a limiting mechanism for blocking the pull rod is provided on the surface of the one of the support frames, two universal wheels are installed at the bottom of one side of the two support frames, and a plurality of shock absorbing mechanisms are installed on the relatively inner surfaces of the two support frames.

[0008] As a preferred solution of the present invention, the support frame is a metal frame, and the metal frame is an aluminum-magnesium alloy frame.

[0009] As a preferred solution of the utility model, the top of the pulling rod is rotatably connected with a movable connecting rod, the top of the movable connecting rod is installed with a cross bar, and the surface of the cross bar is provided with an anti-slip sleeve.

[0010] As a preferred solution of the utility model, the limiting mechanism includes a first elastic strap and a second elastic strap installed on the surface of the support frame and located on both sides of the pull rod, an insert block is installed at one end of the outer side of the first elastic strap, and a locking block adapted to the insert block is installed at one end of the outer side of the second elastic strap.

[0011] As a preferred solution of the utility model, a plurality of shock-absorbing blocks are arranged on the surface of the support frame on one side, and the thickness of the shock-absorbing blocks is greater than the thickness of the pulling rod.

[0012] As a preferred solution of the utility model, the shock absorbing mechanism includes a reinforcement plate installed on the surface of a supporting frame, a plurality of mounting cylinders are equidistantly installed on the surface of the reinforcement plate, a sliding cylinder is slidably connected to the inner wall of the mounting cylinder, a shock absorbing plate is fixedly connected to one end of the outer side of the sliding cylinder, a damper is provided inside the mounting cylinder, and the damper is fixedly connected to the inner wall of the sliding cylinder, and a buffer spring is provided on the outer side of the damper.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The present solution can release the pull rod through the limiting mechanism, and the user can then adjust the angle of the pull rod, and then pull the support frame through the pull rod, thereby avoiding the probability of tilting the support frame, thereby reducing the labor intensity of the user moving the support frame. When not in use, the pull rod is limited by the limiting mechanism, thereby improving the space utilization of the frame structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0016] In the attached picture:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model from a first perspective;

[0019] Figure 3 It is a schematic diagram of the overall structure of the utility model from a second viewing angle;

[0020] Figure 4It is a schematic diagram of the shock absorbing mechanism in the structure of the utility model;

[0021] Figure 5 It is a schematic diagram of the pull rod after adjustment in the structure of the utility model.

[0022] In the figure: 1. support frame; 2. connecting hinge; 3. pulling rod; 4. shock absorbing block; 5. movable connecting rod; 6. cross bar; 7. limiting mechanism; 701. first elastic band; 702. plug-in block; 703. second elastic band; 704. locking block; 8. universal wheel; 9. shock absorbing mechanism; 901. reinforcement plate; 902. mounting cylinder; 903. sliding cylinder; 904. shock absorbing plate; 905. damper; 906. buffer spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example

[0025] See also Figure 1-5 , the technical solution provided by this embodiment is as follows:

[0026] A trolley case frame structure comprises: two support frames 1, the two support frames 1 are rotatably connected by a plurality of connecting hinges 2, a pulling rod 3 is rotatably connected to the surface of the support frame 1 on one side, a limiting mechanism 7 for blocking the pulling rod 3 is arranged on the surface of the support frame 1 on one side, two universal wheels 8 are installed on the bottom of one side of the two support frames 1, a plurality of shock absorbing mechanisms 9 are installed on the relatively inner surfaces of the two support frames 1, the pulling rod 3 can be released by the limiting mechanism 7, at which time the user can adjust the angle of the pulling rod 3, and then pull the support frame 1 by the pulling rod 3, so as to avoid the probability of tilting and moving the support frame 1, thereby reducing the labor intensity generated by the user moving the support frame 1, and the pulling rod 3 is limited by the limiting mechanism 7 when not in use, so as to improve the space utilization rate of the frame structure.

[0027] Specifically, the support frame 1 is a metal frame, and the metal frame is an aluminum-magnesium alloy frame.

[0028] In a specific embodiment of the utility model, the strength and corrosion resistance of the support frame 1 are increased by setting the material of the support frame 1, while the wear resistance and anti-scratch effects are increased.

[0029] Specifically, the top of the pulling rod 3 is rotatably connected with a movable connecting rod 5 , the top of the movable connecting rod 5 is installed with a cross bar 6 , and the surface of the cross bar 6 is provided with an anti-slip sleeve.

[0030] In a specific embodiment of the utility model, the coordinated use of the movable connecting rod 5 and the cross bar 6 facilitates the user to pull the pulling rod 3, and the movable connecting rod 5 and the cross bar 6 can simultaneously hang objects, thereby increasing the practicality of the frame structure.

[0031] Specifically, the limiting mechanism 7 includes a first elastic strap 701 and a second elastic strap 703 installed on the surface of the supporting frame 1 and located on both sides of the pulling rod 3. An insert block 702 is installed at one end of the outer side of the first elastic strap 701, and a locking block 704 adapted to the insert block 702 is installed at one end of the outer side of the second elastic strap 703.

[0032] In a specific embodiment of the present invention, by inserting the insert block 702 on the surface of the first elastic band 701 into the lock block 704 on the surface of the second elastic band 703, the pull rod 3 can be limited, thereby preventing the pull rod 3 from shaking when not in use.

[0033] Specifically, a plurality of shock-absorbing blocks 4 are disposed on the surface of the supporting frame 1 on one side, and the thickness of the shock-absorbing blocks 4 is greater than the thickness of the pulling rod 3 .

[0034] In a specific embodiment of the utility model, the probability of the support frame 1 contacting the ground can be prevented by setting the shock-absorbing block 4. At the same time, the thickness of the shock-absorbing block 4 is greater than the thickness of the pull rod 3, which can prevent the pull rod 3 from contacting the ground, thereby reducing the probability of damage to the pull rod 3.

[0035] Specifically, the shock absorbing mechanism 9 includes a reinforcement plate 901 installed on the surface of the support frame 1, and a plurality of mounting cylinders 902 are equidistantly installed on the surface of the reinforcement plate 901. The inner wall of the mounting cylinder 902 is slidably connected to a sliding cylinder 903, and one end of the outer side of the sliding cylinder 903 is fixedly connected to a shock absorbing plate 904. A damper 905 is provided inside the mounting cylinder 902, and the damper 905 is fixedly connected to the inner wall of the sliding cylinder 903, and a buffer spring 906 is provided on the outer side of the damper 905.

[0036] In a specific embodiment of the present utility model, when the shock absorbing plate 904 is subjected to a force, the force will be transmitted to the sliding cylinder 903. The sliding cylinder 903 slides on the inner wall of the mounting cylinder 902 and transmits the force to the damper 905 and the buffer spring 906. At this time, the damper 905 and the buffer spring 906 absorb the force and charge it, thereby reducing the force on the support frame 1. When the force disappears, the damper 905 and the buffer spring 906 will drive the sliding cylinder 903 and the shock absorbing plate 904 to reset.

[0037] Working principle: By disconnecting the locking block 704 and the inserting block 702, the pulling rod 3 will be released, and the user can adjust the angle of the pulling rod 3, and then pull the supporting frame 1 through the pulling rod 3, so as to avoid the probability of tilting the supporting frame 1, thereby reducing the labor intensity of the user moving the supporting frame 1. When not in use, by inserting the inserting block 702 on the surface of the first elastic band 701 into the locking block 704 on the surface of the second elastic band 703, the pulling rod 3 can be limited, thereby preventing the pulling rod 3 from shaking when not in use. At this time, the supporting frame 1 can still be pulled by the pulling rod 3. The movable connecting rod 5 and the cross bar 6 make it convenient for the user to pull the pulling rod 3. At the same time, the movable connecting rod 5 and the cross bar 6 can hang objects, thereby increasing the practicality of the frame structure. When the shock-absorbing plate 904 is subjected to a force, the force will be transmitted to the sliding cylinder 903. The sliding cylinder 903 slides on the inner wall of the mounting cylinder 902 and transmits the force to the damper 905 and the buffer spring 906. At this time, the damper 905 and the buffer spring 906 absorb the force and charge it, thereby reducing the force on the support frame 1. When the force disappears, the damper 905 and the buffer spring 906 will drive the sliding cylinder 903 and the shock-absorbing plate 904 to reset.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A trolley case frame structure, characterized in that: include: Two support frames (1), the two support frames (1) are rotatably connected via a plurality of connecting hinges (2), a pull rod (3) is rotatably connected to the surface of one side of the support frame (1), a limiting mechanism (7) for blocking the pull rod (3) is provided on the surface of one side of the support frame (1), two universal wheels (8) are installed at the bottom of one side of the two support frames (1), and a plurality of shock absorbing mechanisms (9) are installed on the relatively inner surfaces of the two support frames (1).

2. A trolley case frame structure according to claim 1, characterized in that: The support frame (1) is a metal frame, and the metal frame is an aluminum-magnesium alloy frame.

3. The trolley case frame structure according to claim 1, characterized in that: The top of the pulling rod (3) is rotatably connected to a movable connecting rod (5), the top of the movable connecting rod (5) is installed with a cross bar (6), and the surface of the cross bar (6) is provided with an anti-slip sleeve.

4. The trolley case frame structure according to claim 1, characterized in that: The limiting mechanism (7) comprises a first elastic band (701) and a second elastic band (703) which are mounted on the surface of the supporting frame (1) and located on both sides of the pulling rod (3); an insert block (702) is mounted on one end of the outer side of the first elastic band (701); and a locking block (704) adapted to the insert block (702) is mounted on one end of the outer side of the second elastic band (703).

5. The trolley case frame structure according to claim 1, characterized in that: A plurality of shock-absorbing blocks (4) are arranged on the surface of the support frame (1) on one side, and the thickness of the shock-absorbing blocks (4) is greater than the thickness of the pulling rod (3).

6. The trolley case frame structure according to claim 1, characterized in that: The shock absorbing mechanism (9) comprises a reinforcing plate (901) mounted on the surface of the supporting frame (1), a plurality of mounting cylinders (902) being equidistantly mounted on the surface of the reinforcing plate (901), a sliding cylinder (903) being slidably connected to the inner wall of the mounting cylinder (902), a shock absorbing plate (904) being fixedly connected to one end of the outer side of the sliding cylinder (903), a damper (905) being arranged inside the mounting cylinder (902), and the damper (905) being fixedly connected to the inner wall of the sliding cylinder (903), and a buffer spring (906) being arranged on the outer side of the damper (905).

Images