Locking structure of universal wheel

Abstract

The utility model discloses a locking structure of a universal wheel, and relates to the technical field of universal wheels. The wheel hub comprises a wheel hub, a main body assembly is arranged on the surface of the wheel hub, an inserting assembly is arranged on the surface of the main body assembly, a plurality of locking grooves are formed in the surface of the main body assembly, and a sealing block is fixedly connected to the surface of an auxiliary assembly. According to the utility model, the plugging assembly extrudes the sealing block in the locking groove through the cooperation of the extrusion assembly, the second spring is extruded and contracted into the mounting groove, and the elastic potential energy of the first spring is greater than that of the second spring, so that the pressure provided by the first spring enables the second spring to be extruded and contracted, and the sealing block cannot automatically move; and meanwhile, sealing blocks are arranged in the other locking grooves, the locking structure of the universal wheel can seal the openings of the locking grooves through the arrangement of the auxiliary assemblies and the sealing blocks, meanwhile, the locking process of the universal wheel cannot be affected, and the problem that the locking grooves are blocked due to impurities is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a universal wheel technical field, concretely relates to a locking structure of universal wheel. BACKGROUND

[0002] The universal wheel is a kind of wheel that can realize 360 ° omni-directional rotation on plane.The universal wheel is widely applied to various equipment and appliance needing flexible movement.In industrial field, such as factory's material handling vehicle, universal wheel makes handling vehicle can freely shuttle in workshop complex layout, handles raw material or finished product.In daily life, like luggage bottom installation universal wheel, it is convenient for people to easily drag luggage in the course of travel, and flexibly changes walking direction in crowded place such as airport, railway station.

[0003] The locking structure of universal wheel refers to the structure combination specially designed for controlling the motion state of universal wheel, it can limit the rotation of universal wheel under specific demand, to ensure that equipment or object keeps stable or is in expected stationary position in use, and this locking structure usually includes locking component closely connected with universal wheel assembly, prevents its rotation by pushing lock pin to insert into specific card slot of universal wheel, but universal wheel in use, if lock pin is not inserted into card slot inside, card slot is always exposed outside, at this time, dust or dirt and other impurities outside can enter the inside of card slot, cause blockage in the inside of card slot, and then will affect its locking effect.

[0004] Therefore, a locking structure of universal wheel is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at: for solving the problem that universal wheel in use, if lock pin is not inserted into card slot inside, card slot is always exposed outside, at this time, dust or dirt and other impurities outside can enter the inside of card slot, cause blockage in the inside of card slot, and then will affect its locking effect, the utility model provides a locking structure of universal wheel.

[0006] The utility model discloses a locking structure of universal wheel to achieve the above-mentioned purpose specifically adopts the following technical scheme:

[0007] A locking structure of universal wheel, including hub, the surface of the hub is provided with main body assembly, the surface of the main body assembly is provided with the plug-in assembly, the inner wall of the plug-in assembly is provided with the extrusion assembly for cooperating with the moving process of plug-in assembly, the surface of the main body assembly is provided with a plurality of locking grooves, the inner wall of the locking groove is provided with the auxiliary assembly for preventing the locking groove from being blocked, the surface of the auxiliary assembly is fixedly connected with sealing block.

[0008] Further, the main body assembly comprises a steering knuckle, the inner wall of the wheel hub is rotationally connected with the steering knuckle through a bearing, the surface of the steering knuckle is fixedly sleeved with a connecting block, the inner wall of the wheel hub is provided with a tire, and the surface of the wheel hub is provided with a brake pedal.

[0009] Further, the plug-in assembly comprises a mounting block, the surface of the connecting block is fixedly connected with the mounting block, the surface of the mounting block is fixedly connected with a connecting box, and the surface of the connecting box is movably plugged with a locking rod.

[0010] Further, the extrusion assembly comprises a sleeve structure, the surface of the locking rod is fixedly sleeved with the sleeve structure, the inner wall of the connecting box is provided with a moving groove, the inner wall of the connecting box is provided with a limiting groove, and the inner wall of the connecting box is fixedly connected with a spring one.

[0011] Further, the auxiliary assembly comprises a mounting groove, the inner wall of the locking groove is provided with the mounting groove, the inner wall of the mounting groove is fixedly connected with a spring two, and the sealing block is fixedly connected with one end of the spring two.

[0012] Further, the number of the locking grooves is four, and the four locking grooves are circularly arranged along the axis of the steering knuckle on the surface of the wheel hub.

[0013] The utility model discloses the beneficial effects are as follows:

[0014] The plug-in assembly is matched with the extrusion assembly, the locking rod is inserted into the locking groove, the wheel hub is positioned, the wheel hub cannot rotate on the steering knuckle, after the locking rod is inserted, the spring one provides the pressure, the locking rod will not automatically pop out of the locking groove, when the locking rod enters the locking groove, the sealing block in the locking groove is extruded, the spring two is extruded and shrunk into the mounting groove, the elastic potential energy of the spring one is greater than the elastic potential energy of the spring two, therefore the pressure provided by the spring one can make the spring two extrude and shrink, the sealing block cannot automatically move, and through the arrangement of the sealing block in the remaining locking grooves, the sealing block connected with the spring two can seal the opening of the locking groove, so that external impurities cannot enter the inside of the locking groove. ACCURACY OF DRAWINGS

[0015] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0016] Figure 2 It is the three-dimensional structure right view schematic diagram of the utility model;

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

[0018] Figure 4 is the enlarged schematic view of the structure at A of the utility model;

[0019] Figure 5 is the enlarged schematic view of the structure at B of the utility model.

[0020] Reference signs: 1, hub;2, main body assembly;201, steering knuckle;202, connecting block;203, tire;204, brake pedal;3, plug-in assembly;301, mounting block;302, connecting box;303, locking rod;4, extrusion assembly;401, collar structure;402, moving groove;403, limiting groove;404, spring one;5, locking groove;6, auxiliary assembly;601, mounting groove;602, spring two;7, sealing block. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0023] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the embodiments of the utility model, it should be noted that the orientation or position relationship indicated by the terms "inner", "outer", "upper", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship of the utility model product when it is usually placed, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0025] As Figures 1-5As shown in the figure, a locking structure of a universal wheel comprises a wheel hub 1, the surface of the wheel hub 1 is provided with a main body assembly 2, the surface of the main body assembly 2 is provided with a plug-in assembly 3, the inner wall of the plug-in assembly 3 is provided with an extrusion assembly 4 for matching the movement process of the plug-in assembly 3, the surface of the main body assembly 2 is provided with a plurality of locking grooves 5, the inner wall of the locking groove 5 is provided with an auxiliary assembly 6 for preventing blockage at the locking groove 5, and the surface of the auxiliary assembly 6 is fixedly connected with a sealing block 7; Specifically, the locking structure of the universal wheel, the setting of the main body assembly 2, based on the special wheel frame and bearing structure, when external force acts on the structure, the main body assembly 2 can automatically adjust the rotation angle according to the direction of the external force, and is moved in cooperation with the installation equipment, the setting of the plug-in assembly 3 and the extrusion assembly 4, the plug-in assembly 3 is inserted into the inside of the locking groove 5 through the cooperation of the extrusion assembly 4, the structure of the plug-in assembly 3, at this time the structure of the main body assembly 2 cannot rotate, and then the locking is completed, the setting of the auxiliary assembly 6 in the locking groove 5, the auxiliary assembly 6 is connected to the sealing block 7, the sealing block 7 can seal the opening of the locking groove 5, so that the external impurities cannot enter the inside of the locking groove 5, the locking structure of the universal wheel, through the setting of the auxiliary assembly 6 and the sealing block 7, the opening of the locking groove 5 can be sealed, and at the same time it will not affect the locking process of the universal wheel, avoiding the problem that impurities can cause blockage at the locking groove 5.

[0026] As shown in the figure, Figure 1 , Figure 2 The main body assembly 2 comprises a knuckle 201, the inner wall of the wheel hub 1 is rotatably connected with the knuckle 201 through a bearing, the surface of the knuckle 201 is fixedly sleeved with a connecting block 202, the inner wall of the wheel hub 1 is provided with a tire 203, and the surface of the wheel hub 1 is provided with a brake pedal 204; Specifically, the setting of the main body assembly 2, the connecting block 202 connects the universal wheel to the corresponding equipment for use, the knuckle 201 is connected to the connecting block 202, the wheel hub 1 is rotatably connected with the connecting block 202, the connecting block 202 enables the wheel hub 1 to rotate, the tire 203 enables the universal wheel to roll, and the setting of the brake pedal 204, the brake block of the brake pedal 204 tightly presses against the side surface of the tire 203, and the tire 203 stops rotating due to the large friction force.

[0027] As shown in the figure, Figure 2 , Figure 4As shown, the plug-in assembly 3 includes a mounting block 301, the surface of the connecting block 202 is fixedly connected with the mounting block 301, the surface of the mounting block 301 is fixedly connected with the connecting box 302, and the surface of the connecting box 302 is movably plugged with the locking rod 303; Specifically, the plug-in assembly 3 is provided, the mounting block 301 is mounted on the connecting block 202, the locking rod 303 can move in the connecting box 302, the locking rod 303 can move in the connecting box 302, and the locking rod 303 can move in the locking slot 5. When the locking rod 303 moves, the extrusion assembly 4 can cooperate with the locking rod 303 to move, and the locking rod 303 can be locked in the locking slot 5 after moving to the locking slot 5, so that the hub 1 cannot rotate on the knuckle 201. The setting of the plurality of locking slots 5 enables the hub 1 to be stationary in different positions.

[0028] As shown in Figure 4 , the extrusion assembly 4 includes a sleeve structure 401, the surface of the locking rod 303 is fixedly sleeved with the sleeve structure 401, the inner wall of the connecting box 302 is provided with a moving slot 402, the inner wall of the connecting box 302 is provided with a limiting slot 403, and the inner wall of the connecting box 302 is fixedly connected with a spring 404; Specifically, the extrusion assembly 4 is provided, the sleeve structure 401 is connected to the locking rod 303 when the locking rod 303 moves, and the locking rod 303 can be stably plugged in the locking slot 5 by the pressure provided by the spring 404. At this time, without external force, the locking rod 303 will not automatically move out of the locking slot 5, thereby ensuring the stability of the locking of the hub 1, the surface protrusion of the sleeve structure 401 can move in the moving slot 402, the protrusion of the sleeve structure 401 can rotate the locking rod 303 after entering the limiting slot 403, and the protrusion of the sleeve structure 401 can be clamped into the limiting slot 403. At this time, the locking rod 303 will not extend into the locking slot 5, thereby avoiding affecting the movement of the universal wheel when the universal wheel is not locked.

[0029] As shown in Figure 3 , Figure 5 , the auxiliary assembly 6 includes a mounting slot 601, the inner wall of the locking slot 5 is provided with the mounting slot 601, the inner wall of the mounting slot 601 is fixedly connected with a spring 602, and one end of the spring 602 is fixedly connected with the sealing block 7; Specifically, the auxiliary assembly 6 is provided, the spring 602 is connected to the sealing block 7, the opening of the locking slot 5 is blocked by the sealing block 7, so that the external impurities will not cause the locking slot 5 to be blocked, and the elastic potential energy of the spring 602 is less than that of the spring 404. Therefore, when the locking rod 303 is inserted into the locking slot 5, the sealing block 7 will not push the locking rod 303 out of the locking slot 5.

[0030] As shown in Figure 5As shown, the number of locking grooves 5 is four, and the four locking grooves 5 are distributed in a circular array on the surface of the hub 1 along the axis of the knuckle 201; specifically, the four locking grooves 5 are arranged on the surface of the hub 1, and the hub 1 can be rotated according to the use requirements of the universal wheel; when different locking grooves 5 are aligned with the locking rod 303, the locking rod 303 is inserted into the locking groove 5 to lock at a specific position.

[0031] In summary: the locking structure of the universal wheel, the arrangement of the plug-in assembly 3 and the extrusion assembly 4, the structure of the plug-in assembly 3 inserted into the locking groove 5 through the cooperation of the extrusion assembly 4, the plug-in assembly 3 limits the hub 1 so that the hub 1 cannot rotate on the knuckle 201, the locking rod 303 moves in the connecting box 302 so that the locking rod 303 is aligned and inserted into one locking groove 5, and when the locking rod 303 is moved out of the locking groove 5, the locking rod 303 moves, the protrusions on the surface of the sleeve ring structure 401 move in the moving groove 402, and when the protrusions of the sleeve ring structure 401 move into the limiting groove 403, the connecting box 302 rotates, at this time the protrusions on the surface of the sleeve ring structure 401 can be clamped into the limiting groove 403, so that the position of the locking rod 303 is locked, and when the locking rod 303 is inserted into the locking groove 5, the spring 404 is compressed and shrunk, the locking rod 303 is rotated, so that the protrusions of the sleeve ring structure 401 can re-enter the moving groove 402, and then the locking rod 303 is re-inserted into the locking groove 5, at this time the spring 404 provides pressure so that the locking rod 303 cannot automatically pop out of the locking groove 5, and when the locking rod 303 enters the locking groove 5, the sealing block 7 in the locking groove 5 is extruded, at this time the spring 602 is extruded and shrunk into the mounting groove 601, the elastic potential energy of the spring 404 is greater than that of the spring 602, so the pressure provided by the spring 404 extrudes and shrinks the spring 602, and the sealing block 7 cannot automatically move, and the sealing block 7 in the remaining locking grooves 5 is arranged to seal the opening of the locking groove 5, so that external impurities cannot enter the inside of the locking groove 5.

[0032] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A locking structure for a caster wheel, characterized in that, The device includes a hub (1), a main body assembly (2) is provided on the surface of the hub (1), a plug-in assembly (3) is provided on the surface of the main body assembly (2), a pressing assembly (4) is provided on the inner wall of the plug-in assembly (3) for cooperating with the movement of the plug-in assembly (3), a plurality of locking grooves (5) are provided on the surface of the main body assembly (2), an auxiliary assembly (6) for preventing blockage at the locking groove (5) is provided on the inner wall of the locking groove (5), and a sealing block (7) is fixedly connected to the surface of the auxiliary assembly (6).

2. The locking structure for a caster wheel according to claim 1, characterized in that, The main component (2) includes a steering knuckle (201), the inner wall of the hub (1) is rotatably connected to the steering knuckle (201) via a bearing, the surface of the steering knuckle (201) is fixedly fitted with a connecting block (202), the inner wall of the hub (1) is provided with a tire (203), and the surface of the hub (1) is provided with a brake pedal (204).

3. The locking structure for a caster wheel according to claim 2, characterized in that, The plug-in assembly (3) includes a mounting block (301), the surface of the connecting block (202) is fixedly connected to the mounting block (301), the surface of the mounting block (301) is fixedly connected to the connecting box (302), and the surface of the connecting box (302) is movably plugged into a locking rod (303).

4. The locking structure for a caster wheel according to claim 3, characterized in that, The extrusion assembly (4) includes a collar structure (401), the collar structure (401) is fixedly sleeved on the surface of the locking rod (303), the inner wall of the connecting box (302) is provided with a moving groove (402), the inner wall of the connecting box (302) is provided with a limiting groove (403), and a spring (404) is fixedly connected to the inner wall of the connecting box (302).

5. The locking structure for a caster wheel according to claim 1, characterized in that, The auxiliary component (6) includes a mounting groove (601), the inner wall of the locking groove (5) is provided with a mounting groove (601), the inner wall of the mounting groove (601) is fixedly connected with a spring (602), and the sealing block (7) is fixedly connected to one end of the spring (602).

6. The locking structure for a caster wheel according to claim 1, characterized in that, There are four locking grooves (5), and the four locking grooves (5) are arranged in a circular array on the surface of the hub (1) along the axis of the steering knuckle (201).

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