A trolley case having a drawbar

Abstract

The utility model discloses a kind of pull rod boxes of pull rod can be extracted, including box, the two sides of the box are equipped with pull rod assembly, and the upper end of the box is also equipped with pulling member;The pull rod assembly includes fixed frame, the bottom of fixed frame is also equipped with loudspeaker mouth;Pull rod is slidably installed in fixed frame, and the bottom of pull rod is connected with gyro wheel assembly shaft pin;The gyro wheel assembly includes first support and second support, first support and second support one end shaft pin connection, and first support and the other end of the second support move on ground by being equipped with first gyro wheel;By the opposite movement of the box and the pulling member, to let the gyro wheel assembly be unfolded outside the loudspeaker mouth, by the opposite movement of the box and the pulling member, to let the gyro wheel assembly be retracted into the loudspeaker mouth.In this way, the device can adjust the distance between the bottom of the box and the ground while ensuring the movement of the box, reducing the pollution of stains on the box.

Description

Technical Field

[0001] This utility model relates to the field of trolley case technology, specifically a trolley case with a retractable handle. Background Technology

[0002] Existing rolling suitcases generally fall into two categories: one uses fabric as the entire body, with a metal or plastic outer shell; the other uses a plastic shell. Regardless of the type, the bottom of the suitcase must have a caster mounting structure. For fabric-bodied suitcases, the casters are mounted on the fabric body; for plastic-bodied suitcases, the casters are mounted on the plastic shell. Both mounting methods require combining the casters with wheel housings that fit the bottom of the suitcase, and then mounting the wheel housings onto the suitcase body to attach the casters. Because the casters are directly mounted on the suitcase body or shell, the gap between the suitcase and the ground remains constant during movement. This makes it difficult to adjust when wet, leading to the bottom of the suitcase becoming covered in sewage and mud. Utility Model Content

[0003] The purpose of this invention is to provide a pull-out suitcase to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pull-out handle case, comprising a case body, pull-out handle assemblies on both sides of the case body, and a pull member at the upper end of the case body; the pull-out handle assembly includes a fixing frame fixed to the side of the case body, and a flared opening at the bottom of the fixing frame; a pull rod is slidably installed inside the fixing frame, and the bottom of the pull rod is pin-connected to a roller assembly; the roller assembly includes a first bracket and a second bracket, one end of the first bracket and the second bracket are pin-connected, and the other ends of the first bracket and the second bracket move on the ground via a first roller; by moving the case body and the pull member in opposite directions, the roller assembly is extended outside the flared opening, and by moving the case body and the pull member in opposite directions, the roller assembly is retracted into the flared opening.

[0005] As a preferred technical solution of this utility model: the bottom of the box is also provided with a second roller, and the second roller is installed at the connection between the back and bottom surfaces of the box.

[0006] As a preferred technical solution of this utility model: a first swing arm and a second swing arm are further provided between the first bracket and the second bracket; wherein, one end of the first swing arm is connected to the first shaft pin hole in the middle of the first bracket, one end of the second swing arm is connected to the second shaft pin hole in the middle of the second bracket, and the facing surfaces of the first swing arm and the second swing arm are connected by a rotating shaft.

[0007] As a preferred technical solution of this utility model: the fixing frame is also provided with fixing ears, and the fixing frame is fixed to the side of the box body by rivets.

[0008] As a preferred technical solution of this utility model: the pulling member includes a crossbar, the two ends of which are respectively connected to the fixing frames on both sides of the box body, and by pushing the crossbar, the pulling rods on both sides of the box body are raised and lowered synchronously.

[0009] As a preferred technical solution of this utility model: the middle part of the crossbar is provided with an internal threaded hole, and the internal threaded hole is connected to a provided screw, and the screw is rotatably connected to the box body.

[0010] As a preferred technical solution of this utility model: the upper end of the screw is further provided with a driving part, and a handle is rotatably installed on the driving part.

[0011] As a preferred technical solution of this utility model: one end of the screw is connected to the first bearing seat on the housing through a first bearing, and one end of the handle is connected to the second bearing seat on the drive unit through a second bearing.

[0012] The beneficial effects of this utility model by adopting the above technical solution are as follows: By causing the box and the pulling component to move towards each other, the gap between the bottom surface of the box and the ground is raised, thereby reducing or even preventing sewage or mud stains from contaminating the box; simultaneously, after the roller assembly extends out of the flared opening, the first roller rolls on the ground, enabling the box to move. Based on this, the device can adjust the distance between the bottom surface of the box and the ground while ensuring the box can move, thus reducing the contamination of the box by stains. Attached Figure Description

[0013] Figure 1 This is a schematic diagram showing the state of the first roller of this utility model when it rolls on the ground;

[0014] Figure 2 This is a schematic diagram showing the state of the second roller of this utility model when it rolls on the ground;

[0015] Figure 3 This is an exploded view of the main structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the pull rod assembly of this utility model after being cut open from the side;

[0017] Figure 5 This is a cross-sectional view of the tie rod assembly of this utility model.

[0018] Figure 6 This is a schematic diagram of the main structure of the roller assembly of this utility model;

[0019] Figure 7 This is an exploded structural diagram of the pull component of this utility model.

[0020] In the diagram: 1. Housing; 2. Second roller; 3. Pull rod assembly; 30. Fixing bracket; 31. Pull rod; 32. Fixing lug; 33. Roller assembly; 34. Flared mouth; 35. Third shaft pin seat; 36. First bracket; 37. Second bracket; 38. First roller; 39. First swing arm; 310. Second swing arm; 311. First shaft pin hole; 312. Second shaft pin hole; 4. Pulling component; 40. Crossbar; 41. First bearing; 42. Internal threaded hole; 43. Screw; 44. Drive unit; 45. Second bearing seat; 46. Second bearing; 47. Handle; 5. First bearing seat. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model.

[0022] Please see Figure 1-7 This utility model provides an embodiment of a pull-out suitcase, comprising a suitcase body 1, pull rod assemblies 3 on both sides of the suitcase body 1, and a pull member 4 at the upper end of the suitcase body 1; the pull rod assembly 3 includes a fixing frame 30 fixed to the side of the suitcase body 1, and a flared opening 34 at the bottom of the fixing frame 30; a pull rod 31 is slidably installed inside the fixing frame 30, and the bottom of the pull rod 31 is pin-connected to a roller assembly 33; the roller assembly 33 includes a first bracket 36 and a second bracket 37, one end of the first bracket 36 and the second bracket 37 are pin-connected, and the other ends of the first bracket 36 and the second bracket 37 move on the ground via a first roller 38; by moving the suitcase body 1 and the pull member 4 towards each other, the roller assembly 33 unfolds outside the flared opening 34; by moving the suitcase body 1 and the pull member 4 away from each other, the roller assembly 33 retracts into the flared opening 34.

[0023] In summary, by holding the pull member 4 or the box 1, and then causing the box 1 and the pull member 4 to move towards each other, the two brackets on the roller assembly 33 extend from the flared opening 34 until the first roller 38 contacts the ground. As the movement towards each other continues, the two first rollers 38 can be unfolded, so that the box 1 can stand stably on the ground and move on the ground, that is, the bottom surface of the box 1 moves parallel to the ground. Conversely, by causing the box 1 and the pull member 4 to move away from each other, the two brackets can be retracted into the flared opening 34 so that the box 1 can stand on the ground.

[0024] Based on this, the device can adjust the distance between the bottom of the box 1 and the ground while ensuring the movement of the box 1, so as to reduce the contamination of the box by stains.

[0025] To further facilitate the user in pulling the device, a second roller 2 is provided at the bottom of the housing 1. The second roller 2 is installed at the connection between the back and bottom surfaces of the housing 1. Therefore, when the roller assembly 33 is fully inserted into the horn opening 34, the housing 1 is rotated, and the second roller 2 contacts the ground. At this time, an angle is formed between the bottom surface of the housing 1 and the ground, so that the user can pull the housing 1 to move.

[0026] In summary, when the first roller 38 contacts the ground, it can push the entire box 1 to move horizontally along the ground, so that the user can push the box 1 to move. When the second roller 2 contacts the ground, the box 1 tilts on the ground, so that the user can pull the box 1 to move.

[0027] Furthermore, a first swing arm 39 and a second swing arm 310 are provided between the first bracket 36 and the second bracket 37. One end of the first swing arm 39 is pinned to the first pivot hole 311 in the middle of the first bracket 36, and one end of the second swing arm 310 is pinned to the second pivot hole 312 in the middle of the second bracket 37. The facing surfaces of the first swing arm 39 and the second swing arm 310 are connected by a pivot. Specifically, a pivot rod passes through the first pivot hole 311 to rotatably mount one end of the first swing arm 39 onto the first bracket 36, and a pivot rod passes through the second pivot hole 312 to rotatably mount one end of the second swing arm 310 onto the second bracket 37. The two swing arms are also connected by pivot rods.

[0028] Based on this, the first swing arm 39 and the second swing arm 310 can be used to limit the unfolding angle of the two supports after they are fully extended, so as to avoid the problem that the distance between the bottom surface of the box 1 and the ground will decrease due to the increase of the angle between the two supports.

[0029] In addition, the fixing bracket 30 is also provided with fixing ears 32, and the fixing bracket 30 is fixed to the side of the housing 1 by rivets. The bottom of the pull rod 31 is connected to the roller assembly 33 shaft pin through the third shaft pin seat 35; specifically, after the third shaft pin seat 35 is sleeved on the two brackets, the upper ends of the two brackets are rotatably mounted on the third shaft pin seat 35 by the shaft pin rod.

[0030] Based on the above solution, since the pulling member 4 includes a crossbar 40, the two ends of the crossbar 40 are respectively connected to the fixing frames 30 on both sides of the box body 1; and by pushing the crossbar 40, the pull rods 31 on both sides of the box body 1 can be raised and lowered synchronously. Therefore, the crossbar 40 can be used to complete the synchronous raising and lowering of the two pull rods 31, so that the angle of the first roller 38 is uniform, thus ensuring the stability of the box body 1 when it moves.

[0031] Furthermore, to facilitate the lifting of the housing 1, the crossbar 40 is provided with an internal threaded hole 42 in the middle, and the internal threaded hole 42 is connected to a screw 43, and the screw 43 is rotatably connected to the housing 1; specifically, rotating the screw 43 counterclockwise causes the housing 1 to descend and retracts the two first rollers 38, while rotating the screw 43 clockwise causes the housing 1 to rise and unfolds the two first rollers 38; based on this, the automatic lifting and lowering of the housing 1 can be achieved by rotating the screw 43.

[0032] To facilitate the user in rotating the screw 43, a drive unit 44 is provided at the upper end of the screw 43. A handle 47 is rotatably mounted on the drive unit 44. When the second roller 2 rolls on the ground, the user can pull the box 1 to move through the handle 47.

[0033] Furthermore, since one end of the handle 47 is connected to the second bearing seat 45 provided on the drive unit 44 via the second bearing 46, the handle 47 can rotate freely on the drive unit 44.

[0034] In addition, since one end of the screw 43 is connected to the first bearing seat 5 provided on the housing 1 through the first bearing 41, the screw 43 can rotate freely within the first bearing seat 5.

[0035] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A pull-out handle case, characterized in that: Includes a box body (1), both sides of the box body (1) are provided with pull rod assemblies (3), and the upper end of the box body (1) is also provided with a pull member (4). The pull rod assembly (3) includes a fixing frame (30) fixed to the side of the box (1), and the bottom of the fixing frame (30) is also provided with a flared mouth (34); a pull rod (31) is slidably installed in the fixing frame (30), and the bottom of the pull rod (31) is connected to the axle pin of the roller assembly (33). The roller assembly (33) includes a first bracket (36) and a second bracket (37). One end of the first bracket (36) and the second bracket (37) are connected by a pivot pin, and the other end of the first bracket (36) and the second bracket (37) move on the ground through a first roller (38). The roller assembly (33) is extended outside the horn opening (34) by the opposite movement of the housing (1) and the pull member (4), and the roller assembly (33) is retracted into the horn opening (34) by the opposite movement of the housing (1) and the pull member (4).

2. A pull-out handle case according to claim 1, characterized in that: The bottom of the box (1) is also provided with a second roller (2), and the second roller (2) is installed at the connection between the back and bottom of the box (1).

3. A pull-out handle case according to claim 1, characterized in that: A first swing arm (39) and a second swing arm (310) are provided between the first bracket (36) and the second bracket (37); wherein, one end of the first swing arm (39) is connected to the first shaft pin hole (311) in the middle of the first bracket (36), and one end of the second swing arm (310) is connected to the second shaft pin hole (312) in the middle of the second bracket (37), and the facing surfaces of the first swing arm (39) and the second swing arm (310) are connected by a rotating shaft.

4. A pull-out handle case according to claim 3, characterized in that: The fixing bracket (30) is also provided with fixing ears (32), and the fixing bracket (30) is fixed to the side of the box (1) by rivets.

5. A pull-out handle case according to any one of claims 1-4, characterized in that: The pulling member (4) includes a crossbar (40), the two ends of which are connected to the fixing frames (30) on both sides of the box body (1); and by pushing the crossbar (40), the pull rods (31) on both sides of the box body (1) are raised and lowered synchronously.

6. A pull-out handle case according to claim 5, characterized in that: The crossbar (40) is also provided with an internal threaded hole (42) in the middle, and the internal threaded hole (42) is connected to the provided screw (43), and the screw (43) is rotatably connected to the box body (1).

7. A pull-out handle case according to claim 6, characterized in that: The upper end of the screw (43) is also provided with a drive unit (44), and a handle (47) is rotatably installed on the drive unit (44).

8. A pull-out handle case according to claim 7, characterized in that: One end of the screw (43) is connected to the first bearing seat (5) provided on the housing (1) via the first bearing (41), and one end of the handle (47) is connected to the second bearing seat (45) provided on the drive unit (44) via the second bearing (46).

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