Luggage case with brake function

Abstract

The present invention discloses a luggage case with a brake function, comprising a case body, a pull rod, a bottom plate, a brake mechanism and a brake drive assembly, wherein the case body is mounted on the bottom plate, four drive wheels are arranged on the bottom wall of the bottom plate, a mounting plate is arranged on the side wall of the case body, the pull rod is mounted on the mounting plate, the brake mechanism is mounted on the bottom plate and linked with the drive wheels, and the brake drive assembly is mounted on the mounting plate and connected with the brake mechanism. The present invention enables the brake mechanism to brake the drive wheels at any time through the drive of the brake drive assembly to complete the braking action, with good braking effect and easy braking; the brake mechanism of the present invention can well control the direction of the luggage case, and timely control the luggage case to achieve timely braking.

Description

Technical Field

[0001] The present invention relates to the technical field of luggage cases, and in particular to a luggage case with a braking function. Background Art

[0002] In modern society, people often go out for work, travel or study, and often carry a suitcase with them. The most common people at airports and train stations are those pulling suitcases. Existing trolley cases with universal wheels generally cannot be braked when no one is holding them; if the universal wheels of the trolley case have a braking structure, the casters will be relatively large or bulky, and the cost is high. As people go out more frequently, during travel, there are usually special slopes for suitcases to slide down in tunnels such as train stations and airports. When the suitcase encounters a sliding section or is unstable due to external force, due to the uneven road surface and the temporary change in the direction of human force, the direction of the suitcase cannot be well controlled, resulting in the suitcase being inconvenient to control; therefore, designing a suitcase with good braking effect and easy braking is urgently needed. Summary of the invention

[0003] The object of the present invention is to provide a suitcase with a brake function, which is easy to operate and the direction of the suitcase is controllable and the brakes can be realized in time, so as to solve the technical problems mentioned in the background technology.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A suitcase with a brake function comprises a case body, a pull rod, a bottom plate, a brake mechanism and a brake drive assembly, wherein the case body is mounted on the bottom plate, four drive wheels are arranged on the bottom wall of the bottom plate, a mounting plate is arranged on the side wall of the case body, the pull rod is mounted on the mounting plate, the brake mechanism is mounted on the bottom plate and is linked to the drive wheels, and the brake drive assembly is mounted on the mounting plate and connected to the brake mechanism.

[0006] The luggage case with a brake function of the present invention has a brake mechanism installed on the periphery of the driving wheel. The brake mechanism can brake the driving wheel at any time through the drive of the brake drive assembly to complete the braking action. The braking effect is good and the braking is easy.

[0007] Furthermore, the driving wheel comprises a running wheel, a connecting column and a triangular prism, the running wheel is connected to the bottom end of the connecting column, the triangular prism is connected to the top end of the connecting column, and a bearing is sleeved on the connecting column;

[0008] The triangular prism is convexly mounted on the top wall of the bottom plate.

[0009] The beneficial effect of the above preferred solution is that the triangular prism is used to work in conjunction with the brake mechanism later.

[0010] Furthermore, the four walking wheels are divided into two groups on the base plate and are distributed in parallel and symmetrically. A brake mechanism is provided on the periphery of any of the walking wheels. The brake mechanism includes a triangular rotating frame, a hanging rod fixedly installed on the top wall of the base plate, a limit block and a spring. The first vertex angle of the triangular rotating frame is hinged to the base plate through a hinge shaft, and a first hanging ear and a second hanging ear are provided at both ends of the second vertex angle of the triangular rotating frame. One end of the spring is connected to the hanging rod, and the other end of the spring is connected to the first hanging ear. The second hanging ear is connected to the brake drive assembly, and the limit block is used to limit the active stroke of the third vertex angle of the triangular rotating frame.

[0011] The beneficial effect of the above preferred scheme is: the working principle of the brake mechanism is: when the brake drive assembly is started, the second hanging ear is connected to the brake drive assembly, and the second hanging ear pulls the triangular rotating frame to move counterclockwise around the first vertex of the triangular rotating frame. At this time, the spring connected to the first hanging ear will be stretched, and the hanging rod is fixed; the triangular rotating frame rotates counterclockwise until the third vertex of the triangular rotating frame is blocked by the limit block. At this time, one side wall of the triangular prism of the driving wheel is in contact with the frame of the triangular rotating frame, and the bearing of the driving wheel is also restricted from rotating. The driving wheel is in a braking state, and the braking process of the four driving wheels is the same.

[0012] Furthermore, there is a height difference between the limiting block and the triangular rotating frame, and there is a height difference between the triangular prism and the triangular rotating frame.

[0013] The beneficial effect of the above preferred solution is that the designed height difference plays a role of limiting and blocking.

[0014] Further, the brake drive assembly includes a drive plate, a drive block, a first steel wire rope and a second steel wire rope, the drive plate includes a first slide groove and a second slide groove, the first slide groove is arranged at the top end of the drive plate, the second slide groove is arranged at the side of the drive plate, a locking block is slidably installed on the first slide groove, a connecting rod assembly is connected to the locking block, one end of the connecting rod assembly is connected to the locking block, and the other end of the connecting rod assembly is hinged to the drive block, both ends of the drive block are slidably installed in the second slide groove, and the first ends of the first steel wire rope and the second steel wire rope are symmetrically fixedly connected to the bottom wall of the drive block;

[0015] The second end of the first steel wire rope is connected to a group of travel wheels, and the periphery of the wheels is provided with a brake mechanism;

[0016] The second end of the second steel wire rope is connected to the periphery of another group of traveling wheels, and a brake mechanism is provided.

[0017] The beneficial effect of the above preferred solution is that a locking block is slidably mounted on the first slide groove of the brake drive assembly of the present invention, and the locking block slides back and forth along the first slide groove to drive the brake assembly.

[0018] Further, the connecting rod assembly includes a first connecting rod and a second connecting rod, the length of the first connecting rod is greater than the length of the second connecting rod, the first end of the first connecting rod is connected to the locking block, the second end of the first connecting rod is hinged to the driving block, the first end of the second connecting rod is hinged to the upper and middle part of the first connecting rod, the second end of the second connecting rod is hinged to the driving plate, and the second end of the second connecting rod is higher than the second end of the first connecting rod.

[0019] The beneficial effect of the above preferred solution is that the first connecting rod and the second connecting rod form a connecting rod driving mechanism. When the locking block drives the first connecting rod to move leftward, the second connecting rod rotates at the hinge point on the driving plate, and the first connecting rod pulls the driving block upward.

[0020] Furthermore, the four running wheels are divided into a first group of running wheels and a second group of running wheels with the midline of the bottom plate as the axis of symmetry, the second end of the first steel wire rope is connected to two first branch rope bodies, and the two first branch rope bodies are respectively connected to the second hanging ears on the periphery of the first group of running wheels;

[0021] The second end of the second steel wire rope is connected to two second branch rope bodies, and the two second branch rope bodies are respectively connected to the second hanging ears on the periphery of the second group of running wheels.

[0022] The beneficial effect of the above preferred solution is that the first branch rope body and the second branch rope body are both used to connect the second hanging ears on the periphery of the driving wheel of each group.

[0023] Furthermore, the box body is provided with a first pulley seat and a second pulley seat, the bottom plate is provided with a first winding post and a second winding post, the first steel wire rope is wound around the first pulley seat and the first winding post is connected to a second hanging ear at the periphery of the first set of walking wheels;

[0024] The second steel wire rope is wound around the second pulley seat and the second winding post is connected to the second hanging ear on the periphery of the second set of running wheels.

[0025] The beneficial effects of the above preferred scheme are: using the first winding pole and the second winding pole to sleeve the first and second steel wire ropes can standardize the wiring settings and avoid interference from the pulling of the wire ropes; the first pulley seat and the second pulley seat are conducive to the sliding passage of the first and second steel wire ropes.

[0026] Furthermore, the top and sides of the box are provided with handles.

[0027] The beneficial effect of the above preferred solution is that it is convenient for users to lift the suitcase.

[0028] Furthermore, the box body is provided with a zipper.

[0029] The beneficial effect of the above preferred solution is that the arrangement of the zipper makes it easier for the suitcase to pack items.

[0030] The beneficial effects of the present invention are:

[0031] The luggage case with a braking function of the present invention has a braking mechanism installed on the periphery of the driving wheel. The braking mechanism can brake the driving wheel at any time through the driving of the brake driving component to complete the braking action. The braking effect is good and it is easy to achieve braking. During the travel, at a railway station, airport or other transit tunnel, if a special slope for the luggage case to slide down is encountered, or when the luggage case encounters a sliding section or is subjected to an unstable external force, due to the unevenness of the road surface and the temporary change in the direction of human force, the braking mechanism of the present invention can well control the direction of the luggage case, and timely control the luggage case to brake in time.

[0032] The working principle of the brake mechanism of the present invention is: when the brake drive assembly is started, the second hanging ear is connected to the brake drive assembly, and the second hanging ear pulls the triangular rotating frame to move counterclockwise around the first vertex of the triangular rotating frame. At this time, the spring connected to the first hanging ear will be stretched, and the hanging rod is fixed; the triangular rotating frame rotates counterclockwise until the third vertex of the triangular rotating frame is blocked by the limit block, at this time, a side wall of the triangular prism of the driving wheel fits with the frame of the triangular rotating frame, and the bearing of the driving wheel is also restricted from rotating, and the driving wheel is in a braking state, and the braking process of the four driving wheels is the same. This design is not only convenient for users to operate but also has low manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall structure of a suitcase with a brake function according to the present invention;

[0034] Figure 2 It is a schematic diagram of the overall structure of the driving wheel of the present invention;

[0035] Figure 3 A top view of the mounting structure of the brake mechanism and the brake drive assembly of the present invention;

[0036] Figure 4 It is a structural schematic diagram of the brake mechanism of the present invention;

[0037] Figure 5 It is a side structural schematic diagram of the brake drive assembly of the present invention;

[0038] Figure 6 It is a schematic diagram of the back structure of the brake drive assembly of the present invention;

[0039] In the figure, 1-box, 2-pull rod, 3-bottom plate, 4-brake mechanism, 401-triangular rotating frame, 402-hanging rod, 403-limiting block, 404-spring, 405-hinge shaft, 406-first hanging ear, 407-second hanging ear, 5-brake drive assembly, 501-drive plate, 502-drive block, 503-first steel wire rope, 504-second steel wire rope, 505-first slide groove, 506-first hanging ear, 507-second hanging ear, 508-first hanging ear, 509-first hanging ear, 510-first hanging ear, 511-first hanging ear, 512-first hanging ear, 513-first hanging ear, 514-first hanging ear, 515-first hanging ear, 516-first hanging ear, 517-first hanging ear, 518-first hanging ear, 519-first hanging ear, 520-first hanging ear, 521-first hanging ear, 522-first hanging ear, 523-first hanging ear, 524-first hanging ear, 525-first hanging ear, 526-first hanging ear, 527-first hanging ear, 528-first hanging ear, 529-first hanging ear, 530-first hanging ear, 531-first hanging ear, 532-first hanging ear, 533-first hanging ear, 534-first hanging ear, 535-first hanging ear, 536-first hanging ear, 537-first hanging ear, 538-first hanging ear, 539-first hanging ear, 540-first hanging ear, 541-first hanging ear, 542-first hanging ear, 543-first hanging ear, 544-first hanging ear, 545-first hanging ear, 546-first 6-second slide groove, 507-locking block, 508-first branch rope body, 509-second branch rope body, 6-driving wheel, 601-traveling wheel, 602-connecting column, 603-triangular prism, 604-bearing, 7-mounting plate, 8-first pulley seat, 9-second pulley seat, 10-first winding column, 11-second winding column, 12-handle, 13-zipper, 14-first connecting rod, 15-second connecting rod. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0041] Example 1

[0042] See also Figure 1-6 , the present invention provides a technical solution:

[0043] Please refer to Figure 1 A suitcase with a brake function comprises a case body 1, a pull rod 2, a bottom plate 3, a brake mechanism 4 and a brake drive assembly 5, wherein the case body 1 is mounted on the bottom plate 3, four drive wheels 6 are arranged on the bottom wall of the bottom plate 3, a mounting plate 7 is arranged on the side wall of the case body 1, the pull rod 2 is mounted on the mounting plate 7, the brake mechanism 4 is mounted on the bottom plate 3 and is linked with the drive wheel 6, and the brake drive assembly 5 is mounted on the mounting plate 7 and connected with the brake mechanism 4.

[0044] The luggage case with a braking function of the present invention has a braking mechanism 4 installed on the periphery of a driving wheel 6. The braking mechanism 4 can brake the driving wheel 6 at any time through the drive of a brake driving assembly 5 to complete the braking action. The braking effect is good and the braking is easy. During a trip, at a railway station, airport or other transit tunnel, if a special slope for the luggage case to slide down is encountered, or when the luggage case encounters a sliding section or is subjected to an unstable external force, due to the unevenness of the road surface and the temporary change in the direction of human force, the braking mechanism 4 of the present invention can well control the direction of the luggage case, and timely control the luggage case to brake.

[0045] Please refer to Figure 2The driving wheel 6 includes a walking wheel 601, a connecting column 602 and a triangular prism 603, wherein the walking wheel 601 is connected to the bottom end of the connecting column 602, the triangular prism 603 is connected to the top end of the connecting column 602, and a bearing 604 is sleeved on the connecting column 602;

[0046] The triangular prism 603 is protrudingly mounted on the top wall of the bottom plate 3 .

[0047] The triangular prism 603 disposed at the top of the connecting column 602 of the driving wheel 6 of the present invention is used to work in conjunction with the brake mechanism 4 later.

[0048] Please refer to Figure 3-4 The four walking wheels 601 are divided into two groups on the base plate 3 and are distributed in parallel and symmetrically. A brake mechanism 4 is provided on the periphery of any of the walking wheels 601. The brake mechanism 4 includes a triangular rotating frame 401, a hanging rod 402 fixedly mounted on the top wall of the base plate 3, a limit block 403 and a spring 404. The first vertex angle of the triangular rotating frame 401 is hinged to the base plate 3 through a hinge shaft 405. The two ends of the second vertex angle of the triangular rotating frame 401 are provided with a first hanging ear 406 and a second hanging ear 407. One end of the spring 404 is connected to the hanging rod 402, and the other end of the spring 404 is connected to the first hanging ear 406. The second hanging ear 407 is connected to the brake drive assembly 5. The limit block 403 is used to limit the active stroke of the third vertex angle of the triangular rotating frame 401.

[0049] The working principle of the brake mechanism 4 of the present invention is as follows: when the brake drive assembly 5 is started, the second hanging ear 407 is connected to the brake drive assembly 5, and the second hanging ear 407 pulls the triangular rotating frame 401 to move counterclockwise around the first vertex of the triangular rotating frame 401. At this time, the spring 404 connected to the first hanging ear 406 will be stretched, and the hanging rod 402 is fixed; the triangular rotating frame 401 rotates counterclockwise until the third vertex of the triangular rotating frame 401 is blocked by the limit block 403, at this time, a side wall of the triangular prism 603 of the driving wheel 6 is in contact with the frame of the triangular rotating frame 401, and the bearing 604 of the driving wheel 6 is also restricted from rotating, and the driving wheel 6 is in a braking state. The braking process of the four driving wheels 6 is the same. When the four driving wheels 6 are all in the braking state, on the rectangle formed by connecting the vertices of the four triangular prisms 603, the rotation directions of the two driving wheels 6 at adjacent vertices are different; the rotation directions of the driving wheels 6 on a group of diagonals may be the same, but the direction cannot be the same as the direction of the driving wheels on another group of diagonals. At this time, the suitcase cannot move.

[0050] Please refer to Figure 4There is a height difference between the limiting block 403 and the triangular rotating frame 401 , and there is a height difference between the triangular prism 603 and the triangular rotating frame 401 .

[0051] The height difference between the limit block 403 and the triangular rotating frame 401 of the present invention, and the height difference between the triangular prism 603 and the triangular rotating frame 401 are designed to play the role of limit blocking.

[0052] The three sides of the triangular rotating frame 401 of the present invention are equal in length, the three sides of the triangular prism 603 are equal in length, and the side length of the triangular rotating frame 401 is twice the side length of the triangular prism 603, so that the triangular rotating frame 401 can effectively brake the rotation of the triangular prism 603 during the pulling process.

[0053] Please refer to Figure 5-6 , the brake drive assembly 5 includes a drive plate 501, a drive block 502, a first steel wire rope 503 and a second steel wire rope 504, the drive plate 501 includes a first slide groove 505 and a second slide groove 506, the first slide groove 505 is arranged at the top of the drive plate 501, the second slide groove 506 is arranged at the side of the drive plate 501, a locking block 507 is slidably installed on the first slide groove 505, and a connecting rod assembly is connected to the locking block 507, one end of the connecting rod assembly is connected to the locking block 507, and the other end of the connecting rod assembly is hinged to the drive block 502, and the two ends of the drive block 502 are slidably installed in the second slide groove 506, and the first ends of the first steel wire rope 503 and the second steel wire rope 504 are symmetrically fixedly connected to the bottom wall of the drive block 502;

[0054] The second end of the first steel wire rope 503 is connected to a group of the running wheels 601, and the periphery of each of the running wheels 601 is provided with a brake mechanism 4;

[0055] The second end of the second steel wire rope 504 is connected to the periphery of another group of traveling wheels 601 , each of which is provided with a brake mechanism 4 .

[0056] The first slide groove 505 of the brake drive assembly 5 of the present invention is slidably mounted with a lock block 507. The lock block 507 slides back and forth along the first slide groove 505 to drive the brake assembly. Specifically, Figure 6 As shown, when the locking block 507 slides from the right to the left, the connecting rod assembly pulls the driving block 502 to move upward along the second slide groove 506, and the first steel wire rope 503 and the second steel wire rope 504 connected to the driving block 502 are pulled upward. The first steel wire rope 503 and the second steel wire rope 504 are connected to the second hanging ear 407. The second hanging ear 407 pulls the triangular rotating frame 401 to move counterclockwise around the first vertex angle of the triangular rotating frame 401. At this time, the spring 404 connected to the first hanging ear 406 will be stretched, and the driving wheel 6 will be started to brake.

[0057] Please refer to Figure 5-6 The connecting rod assembly includes a first connecting rod 14 and a second connecting rod 15, the length of the first connecting rod 14 is greater than the length of the second connecting rod 15, the first end of the first connecting rod 14 is connected to the locking block 507, the second end of the first connecting rod 14 is hinged to the driving block 502, the first end of the second connecting rod 15 is hinged to the middle and upper part of the first connecting rod 14, the second end of the second connecting rod 15 is hinged to the driving plate 501, and the second end of the second connecting rod 15 is higher than the second end of the first connecting rod 14.

[0058] The first connecting rod 14 and the second connecting rod 15 of the connecting rod assembly of the present invention form a connecting rod driving mechanism. When the locking block 507 drives the first connecting rod 14 to move leftward, the second connecting rod 15 rotates at the hinge point on the driving plate 501, and the first connecting rod 14 pulls the driving block 502 to move upward.

[0059] Preferably, when the locking block 507 moves to the left to the limit position, a locking structure can be installed on the first slide groove 505 using the structure of the prior art to lock the locking block 507 at the leftmost end of the first slide groove 505 .

[0060] Please refer to Figure 5-6 The four running wheels 601 are divided into a first group of running wheels 601 and a second group of running wheels 601 with the midline of the bottom plate 3 as the symmetry axis. The second end of the first steel wire rope 503 is connected to two first branch rope bodies 508, and the two first branch rope bodies 508 are respectively connected to the second hanging ears 407 on the periphery of the first group of running wheels 601;

[0061] The second end of the second steel wire rope 504 is connected to two second branch rope bodies 509 , and the two second branch rope bodies 509 are respectively connected to the second hanging ears 407 on the periphery of the second set of running wheels 601 .

[0062] The first branch rope body 508 and the second branch rope body 509 of the present invention are both used to connect the second hanging ears 407 on the periphery of the driving wheels 6 of each group.

[0063] Please refer to Figure 1 The box body 1 is provided with a first pulley seat 8 and a second pulley seat 9, the bottom plate 3 is provided with a first winding post 10 and a second winding post 11, the first steel wire rope 503 is wound around the first pulley seat 8 and the first winding post 10 is connected to the second hanging ear 407 at the periphery of the first set of walking wheels 601;

[0064] The second steel wire rope 504 is wound around the second pulley seat 9 and the second winding post 11 and connected to the second hanging ear 407 on the periphery of the second set of running wheels 601 .

[0065] The present invention adopts the first winding pole 10 and the second winding pole 11 to sleeve the first steel wire rope 503 and the second steel wire rope 504, which can standardize the wiring setting and avoid interference from the pulling of the steel wire ropes; the first pulley seat 8 and the second pulley seat 9 are conducive to the sliding passage of the first steel wire rope 503 and the second steel wire rope 504.

[0066] Please refer to Figure 1 The top and sides of the box body 1 are provided with handles 12.

[0067] The handle 12 of the present invention is provided to facilitate the user to lift the suitcase.

[0068] Please refer to Figure 1 The box body 1 is provided with a zipper 13.

[0069] The arrangement of the zipper 13 of the present invention facilitates the luggage box to contain articles.

[0070] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A luggage case with a brake function, characterized in that: The invention comprises a box body (1), a pull rod (2), a bottom plate (3), a brake mechanism (4) and a brake drive assembly (5), wherein the box body (1) is mounted on the bottom plate (3), four drive wheels (6) are arranged on the bottom wall of the bottom plate (3), a mounting plate (7) is arranged on the side wall of the box body (1), the pull rod (2) is mounted on the mounting plate (7), the brake mechanism (4) is mounted on the bottom plate (3) and is linked to the drive wheel (6), and the brake drive assembly (5) is mounted on the mounting plate (7) and is connected to the brake mechanism (4); The driving wheel (6) comprises a running wheel (601), a connecting column (602) and a triangular prism (603), wherein the running wheel (601) is connected to the bottom end of the connecting column (602), the triangular prism (603) is connected to the top end of the connecting column (602), and a bearing (604) is sleeved on the connecting column (602); The triangular prism (603) is convexly mounted on the top wall of the bottom plate (3); The four running wheels (601) are divided into two groups on the bottom plate (3) and are distributed in parallel and symmetrically. A brake mechanism (4) is provided on the periphery of any of the running wheels (601). The brake mechanism (4) comprises a triangular rotating frame (401), a hanging rod (402) fixedly mounted on the top wall of the bottom plate (3), a limit block (403) and a spring (404). The first vertex of the triangular rotating frame (401) is hinged to the bottom plate (3) via a hinge shaft (405). The two second vertex of the triangular rotating frame (401) are hinged to the bottom plate (3). A first hanging ear (406) and a second hanging ear (407) are provided at the end thereof, one end of the spring (404) is connected to the hanging rod (402), the other end of the spring (404) is connected to the first hanging ear (406), the second hanging ear (407) is connected to the brake drive assembly (5), the limit block (403) is used to limit the movable travel of the third vertex of the triangular rotating frame (401); the second hanging ear (407) pulls the triangular rotating frame (401) to move counterclockwise around the first vertex of the triangular rotating frame (401), The triangular rotating frame (401) rotates counterclockwise until the third vertex of the triangular rotating frame (401) is blocked by the stop block (403). At this time, a side wall of the triangular prism (603) of the driving wheel (6) fits with the frame of the triangular rotating frame (401). The driving wheel (6) is in the braking state. When the four driving wheels (6) are all in a braking state, on a rectangle formed by connecting the vertices of the four triangular prisms (603), the rotation directions of two driving wheels (6) at adjacent vertices are different; The three sides of the triangular rotating frame (401) are equal in length, the three sides of the triangular prism (603) are equal in length, and the side length of the triangular rotating frame (401) is twice the side length of the triangular prism (603).

2. The luggage case with brake function according to claim 1, characterized in that: There is a height difference between the limiting block (403) and the triangular rotating frame (401), and there is a height difference between the triangular prism (603) and the triangular rotating frame (401).

3. The luggage case with brake function according to claim 1, characterized in that: The brake drive assembly (5) comprises a drive plate (501), a drive block (502), a first steel wire rope (503) and a second steel wire rope (504); the drive plate (501) comprises a first slide groove (505) and a second slide groove (506); the first slide groove (505) is arranged at the top end of the drive plate (501); the second slide groove (506) is arranged at the side of the drive plate (501); a locking block (507) is slidably mounted on the first slide groove (505); a connecting rod assembly is connected to the locking block (507); one end of the connecting rod assembly is connected to the locking block (507); the other end of the connecting rod assembly is hinged to the drive block (502); both ends of the drive block (502) are slidably mounted in the second slide groove (506); the first ends of the first steel wire rope (503) and the second steel wire rope (504) are symmetrically fixedly connected to the bottom wall of the drive block (502); The second end of the first steel wire rope (503) is connected to a brake mechanism (4) on the periphery of a set of the running wheels (601); The second end of the second steel wire rope (504) is connected to a brake mechanism (4) on the periphery of another set of the running wheels (601).

4. The luggage case with brake function according to claim 3, characterized in that: The connecting rod assembly comprises a first connecting rod (14) and a second connecting rod (15), the length of the first connecting rod (14) is greater than the length of the second connecting rod (15), the first end of the first connecting rod (14) is connected to the locking block (507), the second end of the first connecting rod (14) is hinged to the driving block (502), the first end of the second connecting rod (15) is hinged to the middle and upper part of the first connecting rod (14), the second end of the second connecting rod (15) is hinged to the driving plate (501), and the second end of the second connecting rod (15) is higher than the second end of the first connecting rod (14).

5. The luggage case with brake function according to claim 4, characterized in that: The four running wheels (601) are divided into a first group of running wheels (601) and a second group of running wheels (601) with the midline of the bottom plate (3) as a symmetry axis, the second end of the first steel wire rope (503) is connected to two first branch rope bodies (508), and the two first branch rope bodies (508) are respectively connected to second hanging ears (407) on the periphery of the first group of running wheels (601); The second end of the second steel wire rope (504) is connected to two second branch rope bodies (509), and the two second branch rope bodies (509) are respectively connected to second hanging ears (407) on the periphery of the second set of running wheels (601).

6. The luggage case with brake function according to claim 5, characterized in that: The box body (1) is provided with a first pulley seat (8) and a second pulley seat (9), the bottom plate (3) is provided with a first winding post (10) and a second winding post (11), the first steel wire rope (503) is wound around the first pulley seat (8) and the first winding post (10) and is connected to a second hanging ear (407) on the periphery of the first set of running wheels (601); The second steel wire rope (504) is wound around the second pulley seat (9) and the second winding post (11) and is connected to a second hanging ear (407) on the periphery of the second set of running wheels (601).

7. The luggage case with brake function according to claim 1, characterized in that: The top and sides of the box body (1) are both provided with handles (12).

8. The luggage case with brake function according to claim 1, characterized in that: The box body (1) is provided with a zipper (13).

Images