Draw-bar box wheel convenient to replace

Abstract

The utility model discloses a draw-bar box wheel convenient to replace, which comprises a roller component and a positioning seat, the positioning seat is arranged at the top of the roller component, a positioning rod is arranged at the top of the roller component, a limit rod is arranged at the bottom end of the positioning seat, a limit ring is sleeved at one end of the limit rod, and an auxiliary groove is arranged at one end of the limit rod. Two limiting sleeves are arranged on the inner wall of the limiting rod, convex rods are arranged on one sides of the two limiting sleeves, convex blocks are arranged at one ends of the two convex rods, the convex rods, the convex blocks, reset springs, an oil injection pipe and the limiting sleeves are arranged, one end of a positioning rod penetrates into the limiting rod through an auxiliary groove, the convex rods are sequentially pressed inwards, and the oil injection pipe is pressed inwards; and the oil injection pipe is movably connected with one side of the limiting rod, and after the oil injection pipe and the limiting rod are separated, lubricating oil can be injected into the limiting rod and guided to the inner surface of the roller assembly along the inner surface of the positioning rod, so that the interior of the roller assembly can be lubricated and cooled.

Description

Technical Field

[0001] The utility model relates to the technical field of trolley case wheels, in particular to a trolley case wheel which is easy to replace. Background Art

[0002] A trolley case refers to a suitcase with a handle and rollers. It is widely used because of its convenience. At the same time, trolley cases are also divided into single-tube trolleys and double-tube trolleys because the case has a trolley. The tubes of the trolleys are also divided into square tubes and round tubes, which are convenient for dragging while walking and greatly reduce the burden. Trolley cases can be carried by hand or dragged. The wheels of the trolley cases we usually use are basically located at the bottom of the case, and the wheels are completely wrapped on the outside of the case. This roller design allows this trolley case to better adapt to different terrains.

[0003] Due to the changing terrain, the roller assembly will roll back and forth on the uneven ground for a long time, and the surface will be gradually damaged. When the surface of the roller assembly is sunken, the rolling will not be smooth enough, which greatly reduces the usability of the roller assembly. The roller assembly and the positioning seat are usually welded. If the positioning seat is damaged, the roller assembly needs to be removed from the bottom of the suitcase, which is not practical, and it is also laborious to remove a large number of bolts. Therefore, a suitcase wheel that is easy to replace is designed. Utility Model Content

[0004] The purpose of the utility model is to provide a trolley case wheel that is easy to replace, so as to solve the problem proposed in the above background technology that the surface of the roller assembly is sunken, which will lead to less smooth rolling, thereby greatly reducing the usability of the roller assembly, and the positioning seat is damaged, so that the roller assembly needs to be removed from the bottom of the trolley case.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a trolley case wheel that is easy to replace, comprising a roller assembly and a positioning seat, the positioning seat is arranged at the top of the roller assembly, a positioning rod is arranged at the top of the roller assembly, a limiting rod is arranged at the bottom end of the positioning seat, a limiting ring is sleeved on one end of the limiting rod, an auxiliary groove is opened at one end of the limiting rod, two limiting sleeves are arranged on the inner wall of the limiting rod, a convex rod is arranged on one side of the two limiting sleeves, a convex block is arranged on one end of the two convex rods, grooves are opened on both sides of the positioning rod, a reinforcing plate is sleeved on one end of the two convex rods, and a screw is arranged between the two reinforcing plates.

[0006] As a preferred technical solution of the utility model, the positioning rod moves inside the auxiliary groove, and the outsides of the two protruding rods are wrapped with return springs, and one end of the two return springs is fixedly connected to one side of the two limit sleeves respectively.

[0007] As a preferred technical solution of the utility model, one end of the two protrusions is respectively engaged with the inside of the two grooves, and nuts are threadedly sleeved on both ends of the screw.

[0008] As a preferred technical solution of the present utility model, the two nuts are arranged at corresponding positions.

[0009] As a preferred technical solution of the utility model, one end of the two protrusions is respectively fixedly connected to one end of the two protruding rods, and the two reinforcement plates are respectively fixedly sleeved to one end of the two protruding rods.

[0010] As a preferred technical solution of the utility model, the diameters of the two protrusions are both larger than the diameters of the two protruding rods.

[0011] As a preferred technical solution of the utility model, an oil filling pipe is provided on one side of the limit rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model discloses a conveniently replaced trolley case wheel, which is provided with a convex rod, a convex block, a groove, a return spring, an oil filling pipe and a limit sleeve. One end of the positioning rod penetrates into the interior of the limit rod through the auxiliary groove, and the convex rod is pressed inward in turn. The return spring is compressed and deformed when subjected to force. Under the action of the limit sleeve, the convex rod and the limit rod are prevented from being separated from each other. The movement of the convex rod will drive the convex block to move inward, and the two convex blocks are gradually embedded in the interiors of the two grooves. The two are engaged and connected, so that the positioning rod and the limit rod can be limited and fixed, and the two can be quickly installed, which is convenient for subsequent replacement of the roller assembly. The oil filling pipe is movably connected to one side of the limit rod. After the two are separated, the lubricating oil can be injected into the interior of the limit rod, and then guided to the inner surface of the roller assembly along the inner surface of the positioning rod, so that the inside of the roller assembly can be lubricated and cooled.

[0014] 2. The utility model provides a conveniently replaced wheel for a trolley case, which is provided with a reinforcement plate, a screw rod, a nut and an auxiliary groove. After the two protrusions are engaged with the grooves, the two reinforcement plates fixedly mounted thereon are driven to move relative to each other, and the two are in the same straight line. Then the screw rod is inserted into the middle position of the two reinforcement plates, and two nuts are respectively threadedly mounted on the two end portions of the screw rod, so that the two reinforcement plates can be limited and fixed, further ensuring the stability of the protruding rod, and thus ensuring the stability of the positioning rod and the limiting rod after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view structural schematic diagram of the utility model;

[0016] Figure 2 It is a partial side view structural schematic diagram of the utility model;

[0017] Figure 3 It is a partial bottom view structural schematic diagram of the utility model;

[0018] Figure 4 It is a partial side cross-sectional structural schematic diagram of the utility model.

[0019] In the figure: 1. roller assembly; 2. positioning rod; 3. positioning seat; 4. limiting rod; 5. limiting ring; 6. protruding rod; 7. protruding block; 8. limiting sleeve; 9. reset spring; 10. groove; 11. oil filling pipe; 12. reinforcement plate; 13. screw; 14. nut; 15. auxiliary groove. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-4 The utility model provides a technical solution for a trolley case wheel that is easy to replace:

[0022] Embodiment 1:

[0023] like Figure 1-3 As shown, a trolley case wheel which is easy to replace comprises a roller assembly 1 and a positioning seat 3. The positioning seat 3 is arranged on the top of the roller assembly 1, and a positioning rod 2 is arranged on the top of the roller assembly 1. A limiting rod 4 is arranged on the bottom end of the positioning seat 3. A limiting ring 5 is sleeved on one end of the limiting rod 4, and an auxiliary groove 15 is provided on one end of the limiting rod 4. Two limiting sleeves 8 are arranged on the inner wall of the limiting rod 4, and a convex rod 6 is arranged on one side of the two limiting sleeves 8. A convex block 7 is arranged on one end of the two convex rods 6. Grooves 10 are arranged on both sides of the positioning rod 2, and a reinforcing plate 12 is sleeved on one end of the two convex rods 6. A screw 13 is arranged between the two reinforcing plates 12. An oil filling pipe 11 is movably connected with one side of the limiting rod 4. After separating the two, lubricating oil can be injected into the interior of the limiting rod 4, and then guided to the inner surface of the roller assembly 1 along the inner surface of the positioning rod 2, so as to lubricate and cool the interior of the roller assembly 1.

[0024] Embodiment 2:

[0025] Based on the first embodiment, Figure 1 and Figure 4As shown, one end of the two protrusions 7 is fixedly connected to one end of the two protruding rods 6, and the two reinforcing plates 12 are fixedly sleeved on one end of the two protruding rods 6. The utility model is a trolley case wheel that is easy to replace. By setting the reinforcing plates 12, screws 13, nuts 14 and auxiliary grooves 15, after the two protrusions 7 are engaged with the grooves 10, the two reinforcing plates 12 fixedly sleeved therewith are driven to move relative to each other, and the two are in the same straight line, and then the screw 13 is inserted into the middle position of the two reinforcing plates 12.

[0026] Working principle: A trolley case refers to a suitcase with a trolley and rollers. It is widely used because of its convenience. At the same time, trolley cases are also divided into single-tube trolleys and double-tube trolleys because the case has a trolley. The tubes of the trolleys are also divided into square tubes and round tubes. This is convenient for dragging while walking, which greatly reduces the burden. Trolley cases can be carried by hand or dragged. The wheels of the trolley cases we usually use are basically located at the bottom of the case, and the wheels are completely wrapped outside the case. This roller design allows this trolley case to better adapt to different terrains. The positioning seat 3 is mostly directly fixed to the bottom of the case with bolts. Due to the changeable terrain, the roller assembly 1 will be on the uneven surface for a long time. When rolling back and forth on a flat ground, the surface will gradually be damaged. When the surface of the roller assembly 1 is sunken, the rolling will not be smooth enough, thereby greatly reducing the usability of the roller assembly 1. The roller assembly 1 and the positioning seat 3 are usually welded. If the positioning seat 3 is damaged, the roller assembly 1 needs to be removed from the bottom of the suitcase, which is not practical, and it is also laborious to remove a large number of bolts. Therefore, the roller assembly 1 can be removed separately after it is damaged, and one end of the positioning rod 2 is inserted into the interior of the limiting rod 4 through the auxiliary groove 15. The convex rod 6 is pressed inward in turn, and the reset spring 9 is compressed and deformed under the force. Under the action of the limiting sleeve 8, The convex rod 6 and the limiting rod 4 are prevented from being separated from each other. The movement of the convex rod 6 will drive the convex block 7 to move inward, and the two convex blocks 7 are gradually embedded in the two grooves 10. The two are connected by snapping, so that the positioning rod 2 and the limiting rod 4 can be limited and fixed. The two can be installed quickly, which is convenient for the subsequent replacement of the roller assembly 1. When the two need to be disassembled, first separate the two nuts 14 from the two ends of the screw rod 13, and then pull the two convex rods 6 outward in turn to separate the convex block 7 from the groove 10. The disassembly of the positioning rod 2 and the limiting rod 4 can be completed, which is relatively convenient. The oil filling pipe 11 is movably connected to one side of the limiting rod 4, and the two are separated. After separation, lubricating oil can be injected into the interior of the limit rod 4, and then guided along the inner surface of the positioning rod 2 to the inner surface of the roller assembly 1, so as to lubricate and cool the interior of the roller assembly 1. After the two protrusions 7 are engaged with the grooves 10, the two reinforcement plates 12 fixed thereto are driven to move relative to each other, and the two are in the same straight line. Then, the screw 13 is inserted into the middle position of the two reinforcement plates 12, and two nuts 14 are respectively threadedly sleeved on the two ends of the screw 13, so that the two reinforcement plates 12 can be limited and fixed, further ensuring the stability of the protruding rod 6, and also ensuring the stability of the positioning rod 2 and the limit rod 4 after installation.

[0027] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wheel for a suitcase that is easy to replace, comprising a roller assembly (1) and a positioning seat (3), wherein the positioning seat (3) is arranged on the top of the roller assembly (1), and is characterized in that: A positioning rod (2) is arranged at the top of the roller assembly (1), a limiting rod (4) is arranged at the bottom end of the positioning seat (3), one end of the limiting rod (4) is sleeved with a limiting ring (5), one end of the limiting rod (4) is provided with an auxiliary groove (15), the inner wall of the limiting rod (4) is provided with two limiting sleeves (8), one side of the two limiting sleeves (8) is provided with a convex rod (6), one end of the two convex rods (6) is provided with a convex block (7), both sides of the positioning rod (2) are provided with grooves (10), one end of the two convex rods (6) is sleeved with a reinforcing plate (12), and a screw rod (13) is provided between the two reinforcing plates (12).

2. The conveniently replaceable suitcase wheel according to claim 1, characterized in that: The positioning rod (2) moves inside the auxiliary groove (15), and the outsides of the two protruding rods (6) are both wound with return springs (9), and one end of the two return springs (9) is fixedly connected to one side of the two limit sleeves (8) respectively.

3. The conveniently replaceable suitcase wheel according to claim 1, characterized in that: One end of the two protrusions (7) is respectively engaged with the inside of the two grooves (10), and nuts (14) are threadedly sleeved on both ends of the screw rod (13).

4. The conveniently replaceable suitcase wheel according to claim 3, characterized in that: The two nuts (14) are arranged at corresponding positions.

5. The conveniently replaceable suitcase wheel according to claim 1, characterized in that: One end of the two protrusions (7) is fixedly connected to one end of the two protruding rods (6), and the two reinforcing plates (12) are fixedly sleeved to one end of the two protruding rods (6).

6. The conveniently replaceable suitcase wheel according to claim 5, characterized in that: The diameters of the two protrusions (7) are both greater than the diameters of the two protruding rods (6).

7. The conveniently replaceable suitcase wheel according to claim 1, characterized in that: An oil filling pipe (11) is provided on one side of the limiting rod (4).

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