Embedded draw bar for draw-bar box

Abstract

The utility model discloses an embedded draw bar for a draw-bar box, which relates to the technical field of draw-bar boxes and comprises a sleeve and a bottom cylinder, the sleeve is mounted inside an electric draw-bar box, the inside of the sleeve is movably connected with a lifting mechanism, the upper end of the lifting mechanism is fixedly connected with a handle mechanism, and the bottom cylinder is fixedly connected with the bottom cylinder. The motor forward and reverse rotation controller controls the motor to rotate forward and drives the lead screw to rotate forward in the installation sleeve and the lower end cover, the installation sleeve is fixed in the sleeve through the bolt, and the lower end cover moves upwards in the length direction of the lead screw under component force of meshing force. A motor is controlled by a motor forward and reverse rotation controller to rotate reversely, the inner cylinder moves downwards until the inner cylinder is hidden in a sleeve, and after the inner cylinder moves to a proper height, the inner cylinder is driven to move upwards in a ring sleeve, so that the handle mechanism is driven to rise to a specified height. People with different heights can conveniently hold the anti-skid sleeve with one hand or two hands, and the comfort of using the pull rod is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of trolley cases, in particular to an embedded trolley case. Background Art

[0002] With the continuous advancement of technology, smart home products are increasingly popular among consumers. Trolley cases, a travel essential, are also becoming increasingly intelligent. The emergence of electric trolley cases embodies this trend in travel gear. Simultaneously, with increasing demand for greater portability and space efficiency in travel accessories, the concept of built-in trolleys has emerged. The design concept of built-in trolleys conceals the trolley inside the case, allowing it to be completely stowed away in a dedicated compartment when not in use. This creates a more streamlined exterior contour, making it easier to stack and store.

[0003] For example, Chinese patent CN221330478U discloses an embedded trolley for a trolley case, comprising a back frame, the bottom end of which is fixedly connected to a base frame, a torsion shaft being provided inside the base frame, a tightening and loosening bolt being provided at one end of the torsion shaft, a movable shaft being provided on the front of the back frame, a partition being movably connected to the front of the back frame via the movable shaft, and a movable rod being provided inside the back frame.

[0004] However, existing technologies have embedded trolleys in traditional trolley cases, but not in electric trolley cases. For travelers, especially those carrying heavy luggage, pulling a heavy trolley case is a laborious task. Electric trolley cases use a motor to provide power, reducing the burden on users. However, traditional trolleys cannot be adjusted to different heights according to different people's heights, making them inconvenient to use. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that the traditional pull rod cannot be adjusted to different heights according to the heights of different people and is not convenient to use, and to propose an embedded pull rod for a pull rod case.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: an embedded pull rod for a trolley case, comprising a sleeve and a bottom cylinder, the sleeve being installed inside an electric trolley case, the interior of the sleeve being movably connected to a lifting mechanism, the upper end of the lifting mechanism being fixedly connected to a handle mechanism, the outer ring surface of the sleeve being provided with a disassembly and assembly mechanism, the lifting mechanism comprising an upper end cover, an embedded cylinder, a screw, a lower end cover, a mounting sleeve and a motor, the lower end cover being fixedly connected to the lower end of the embedded cylinder, the screw being threadedly connected to the middle part of the lower end cover, the lower end of the screw being transmission-connected to the output shaft of the motor, and the motor being electrically connected to the power supply part of the electric trolley case.

[0007] Preferably, the lead screw is rotatably connected to the mounting sleeve via a bearing, and bolts are threadedly connected on both sides of the mounting sleeve.

[0008] Preferably, a mounting ring is clamped on the outer ring surface of the sleeve, and the bolt passes through the mounting ring and extends to the inside of the mounting sleeve.

[0009] Preferably, a ring sleeve is fixedly connected to the upper part of the inner cavity of the sleeve, and the ring sleeve is slidably connected to the embedded tube.

[0010] Preferably, a stepped groove is provided on the outer annular surface of the sleeve, and the disassembly and assembly mechanism is located in the stepped groove.

[0011] Preferably, the disassembly and assembly mechanism includes a long plate, a concave strip, a long steel strip and a rubber strip, and the rubber strip is bonded to one side of the long steel strip.

[0012] Preferably, the concave strip is fixedly connected to one side of the long plate, and the long steel bar is fixedly connected to the groove of the concave strip by screws.

[0013] Preferably, the long steel bar is interference-fitted in the minimum groove wall of the stepped groove, and the long plate is fixedly connected to the sleeve by screws.

[0014] Preferably, the handle mechanism includes a center link, a connecting column, a handlebar and an anti-slip sleeve, and the center link is threadedly connected to the upper end cover through a nut.

[0015] Preferably, the connecting column is fixedly connected to the upper end of the middle link, the handlebar is threadedly connected to one end of the connecting column, and the anti-slip sleeve is sleeved on the outer annular surface of the handlebar.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are:

[0017] 1. In the present invention, in the initial state, the lifting mechanism is completely hidden inside the sleeve. When it needs to be used, the internal power supply of the electric trolley case supplies power to the motor, and the motor forward and reverse rotation controller is used to control the motor to rotate forward and drive the lead screw to rotate forward in the mounting sleeve and the lower end cover. The mounting sleeve is fixed in the sleeve by bolts, and the lower end cover is subjected to the component of the meshing force and moves upward along the length direction of the lead screw, thereby driving the inner cylinder composed of the upper end cover, the embedded cylinder and the lower end cover to move upward in the ring sleeve, and then driving the handle mechanism to rise to a specified height. The motor forward and reverse rotation controller is used to control the motor to reverse, and the inner cylinder moves downward until it is hidden in the sleeve. After the inner cylinder moves to a suitable height, it is convenient for people of different heights to hold the anti-slip sleeve with one hand or both hands, thereby improving the comfort of using the trolley.

[0018] 2. In the present invention, both ends of the connecting column can be used to fix the handlebar rod in the form of threads. The middle connecting rod can adjust the angle on the upper end cover with the cooperation of the nut, which makes it more convenient to hold the handlebar rod from different angles. At the same time, the anti-slip cover improves the comfort of holding the hand, and the anti-slip cover can be replaced regularly.

[0019] 3. In the utility model, the screws connecting the long plate and the sleeve are periodically unscrewed, and the part consisting of the long plate, the concave strip, the long steel strip and the rubber strip is disassembled, so that the rubber strip is pulled out from the smallest gap of the step groove. The internal condition can be inspected through the step groove or a certain amount of lubricant can be added, which is convenient for later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of an embedded drawbar for a drawbar case proposed in the utility model;

[0021] Figure 2 The utility model provides a schematic diagram of the exploded three-dimensional structure of an embedded drawbar for a drawbar case;

[0022] Figure 3 This is a three-dimensional structural diagram of a disassembly and assembly mechanism in an embedded drawbar for a drawbar case proposed in the utility model;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of a lifting mechanism in an embedded drawbar for a drawbar case proposed in the utility model;

[0024] Figure 5 The utility model provides a three-dimensional structural schematic diagram of an embedded handle mechanism in a trolley case.

[0025] Legend: 1. Handle mechanism; 11. Center link; 12. Connecting column; 13. Handlebar; 14. Anti-slip sleeve; 2. Lifting mechanism; 21. Upper end cover; 22. Embedded cylinder; 23. Screw; 24. Lower end cover; 25. Mounting sleeve; 26. Motor; 3. Sleeve; 31. Ring sleeve; 32. Step groove; 33. Mounting ring; 34. Bolt; 4. Disassembly and assembly mechanism; 41. Long plate; 42. Concave strip; 43. Long steel strip; 44. Rubber strip; 5. Bottom cylinder. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0028] Example 1: Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the utility model provides an embedded pull rod for a pull rod case, including a sleeve 3 and a bottom cylinder 5. The sleeve 3 is installed inside the electric pull rod case. The interior of the sleeve 3 is movably connected with a lifting mechanism 2. The upper end of the lifting mechanism 2 is fixedly connected with a handle mechanism 1. The outer ring surface of the sleeve 3 is provided with a disassembly mechanism 4. The lifting mechanism 2 includes an upper end cover 21, an embedded cylinder 22, a screw 23, a lower end cover 24, a mounting sleeve 25 and a motor 26. The lower end cover 24 is fixedly connected to the lower end of the embedded cylinder 22. The screw 23 is threadedly connected to the middle of the lower end cover 24. The lower end of the lever 23 is transmission-connected to the output shaft of the motor 26, and the motor 26 is electrically connected to the power supply part of the electric trolley case. The lead screw 23 is rotationally connected to the mounting sleeve 25 through a bearing. Bolts 34 are threadedly connected on both sides of the mounting sleeve 25. The outer ring surface of the sleeve 3 is clamped with a mounting ring 33. The bolts 34 pass through the mounting ring 33 and extend to the inside of the mounting sleeve 25. The upper part of the inner cavity of the sleeve 3 is fixedly connected with a ring sleeve 31, and the ring sleeve 31 is slidingly connected to the embedded tube 22. A stepped groove 32 is provided on the outer ring surface of the sleeve 3, and the disassembly and assembly mechanism 4 is located in the stepped groove 32.

[0029] The following is a detailed description of the specific settings and functions of this embodiment: in the initial state, the lifting mechanism 2 is completely hidden inside the sleeve 3. When it needs to be used, the internal power supply of the electric trolley case supplies power to the motor 26, and the motor forward and reverse controller controls the motor 26 to rotate forward and drives the screw 23 to rotate forward in the mounting sleeve 25 and the lower end cover 24. The mounting sleeve 25 is fixed in the sleeve 3 by the bolt 34, and the lower end cover 24 is subjected to the component of the meshing force and moves upward along the length direction of the screw 23, thereby driving the inner cylinder composed of the upper end cover 21, the embedded cylinder 22 and the lower end cover 24 to move upward in the ring sleeve 31, and then drives the handle mechanism 1 to rise to the specified height, and the motor 26 is reversed by the motor forward and reverse controller, and the inner cylinder moves downward until it is hidden in the sleeve 3. After the inner cylinder moves to the appropriate height, it is convenient for people of different heights to hold the anti-slip sleeve 14 with one hand or both hands, thereby improving the comfort of using the pull rod.

[0030] Example 2: Figure 1 、 Figure 2 、 Figure 3 and Figure 5As shown, the disassembly and assembly mechanism 4 includes a long plate 41, a concave strip 42, a long steel strip 43 and a rubber strip 44. The rubber strip 44 is bonded to one side of the long steel strip 43. The concave strip 42 is fixedly connected to one side of the long plate 41. The long steel strip 43 is fixedly connected to the groove of the concave strip 42 by screws. The long steel strip 43 is interference fit in the minimum groove wall of the step groove 32. The long plate 41 is fixedly connected to the sleeve 3 by screws. The handle mechanism 1 includes a center link 11, a connecting column 12, a handlebar rod 13 and an anti-slip sleeve 14. The center link 11 is threadedly connected to the upper end cover 21 through a nut. The connecting column 12 is fixedly connected to the upper end of the center link 11. The handlebar rod 13 is threadedly connected to one end of the connecting column 12. The anti-slip sleeve 14 is sleeved on the outer annular surface of the handlebar rod 13.

[0031] The entire embodiment achieves the following effects: by periodically unscrewing the screws connecting the long plate 41 and the sleeve 3, the portion consisting of the long plate 41, the concave strip 42, the long steel strip 43, and the rubber strip 44 can be removed, allowing the rubber strip 44 to be pulled out from the smallest gap of the stepped groove 32. The internal condition can be inspected through the stepped groove 32, avoiding the problem of inconvenient maintenance in traditional closed structures. Alternatively, a certain amount of lubricant can be added through the stepped groove 32 to improve the smoothness of lifting and lowering. The handlebar 13 can be fixed to both ends of the connecting column 12 in the form of threads. The middle link 11 can be adjusted at an angle on the upper end cover 21 with the cooperation of a nut, making it more convenient to hold the handlebar 13. The anti-slip sleeve 14 improves the comfort of holding.

[0032] The method of use and working principle of this device: the pull rod is installed inside the electric trolley case through the sleeve 3 and the bottom cylinder 5. In the initial state, the lifting mechanism 2 is completely hidden inside the sleeve 3. When it is needed, the internal power supply of the electric trolley case supplies power to the motor 26, and the motor forward and reverse controller controls the motor 26 to rotate forward and drives the screw 23 to rotate forward in the mounting sleeve 25 and the lower end cover 24. The mounting sleeve 25 is fixed in the sleeve 3 by the bolt 34. The lower end cover 24 is subjected to the component of the meshing force and moves upward along the length direction of the screw 23, thereby driving the upper end cover 21, the embedded cylinder 22 and the lower end cover 24 to form The inner cylinder moves upward in the ring sleeve 31, thereby driving the handle mechanism 1 to rise to the specified height. The motor 26 is reversed by the motor forward and reverse controller, and the inner cylinder moves downward until it is hidden in the sleeve 3. After the inner cylinder moves to the appropriate height, the electric trolley case can be dragged by holding the anti-slip cover 14 with one hand or both hands. The screws connecting the long plate 41 and the sleeve 3 are regularly unscrewed, and the part consisting of the long plate 41, the concave strip 42, the long steel strip 43 and the rubber strip 44 are removed, so that the rubber strip 44 is pulled out from the smallest gap of the step groove 32. The internal condition can be inspected through the step groove 32 or a certain amount of lubricant can be added.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An embedded drawbar for a drawbar case, comprising a sleeve (3) and a bottom sleeve (5), characterized in that: The sleeve (3) is installed inside the electric trolley case, and the sleeve (3) is movably connected to a lifting mechanism (2) inside, and the upper end of the lifting mechanism (2) is fixedly connected to a handle mechanism (1), and the outer ring surface of the sleeve (3) is provided with a disassembly mechanism (4), and the lifting mechanism (2) includes an upper end cover (21), an embedded tube (22), a screw (23), a lower end cover (24), a mounting sleeve (25) and a motor (26), wherein the lower end cover (24) is fixedly connected to the lower end of the embedded tube (22), the screw (23) is threadedly connected to the middle part of the lower end cover (24), and the lower end of the screw (23) is transmission-connected to the output shaft of the motor (26), and the motor (26) is electrically connected to the power supply part of the electric trolley case.

2. The embedded drawbar for a drawbar case according to claim 1, characterized in that: The lead screw (23) is rotatably connected to the mounting sleeve (25) via a bearing, and bolts (34) are threadedly connected on both sides of the mounting sleeve (25).

3. The embedded drawbar for a drawbar case according to claim 2, characterized in that: The outer ring surface of the sleeve (3) is clamped with a mounting ring (33), and the bolt (34) passes through the mounting ring (33) and extends to the inside of the mounting sleeve (25).

4. The embedded drawbar for a drawbar case according to claim 3, characterized in that: A ring sleeve (31) is fixedly connected to the upper portion of the inner cavity of the sleeve (3), and the ring sleeve (31) is slidably connected to the embedded cylinder (22).

5. The embedded drawbar for a drawbar case according to claim 4, characterized in that: The outer ring surface of the sleeve (3) is provided with a stepped groove (32), and the disassembly and assembly mechanism (4) is located in the stepped groove (32).

6. The embedded drawbar for a drawbar case according to claim 5, characterized in that: The disassembly and assembly mechanism (4) comprises a long plate (41), a concave strip (42), a long steel strip (43) and a rubber strip (44), wherein the rubber strip (44) is bonded to one side of the long steel strip (43).

7. The embedded drawbar for a drawbar case according to claim 6, characterized in that: The concave strip (42) is fixedly connected to one side of the long plate (41), and the long steel strip (43) is fixedly connected to the groove of the concave strip (42) by screws.

8. The embedded drawbar for a drawbar case according to claim 7, characterized in that: The long steel bar (43) is interference-fitted in the minimum groove wall of the stepped groove (32), and the long plate (41) is fixedly connected to the sleeve (3) by screws.

9. The embedded drawbar for a drawbar case according to claim 1, characterized in that: The handle mechanism (1) comprises a center link (11), a connecting column (12), a handlebar (13) and an anti-slip sleeve (14); the center link (11) is threadedly connected to the upper end cover (21) via a nut.

10. The embedded drawbar for a drawbar case according to claim 9, characterized in that: The connecting column (12) is fixedly connected to the upper end of the middle link (11), the handlebar (13) is threadedly connected to one end of the connecting column (12), and the anti-slip sleeve (14) is sleeved on the outer ring surface of the handlebar (13).

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