Locking device

Abstract

A locking device is suitable for locking a rim to a hub, the rim is provided with a plurality of hole walls, each hole wall defines a mounting hole, and the locking device is arranged in one mounting hole and comprises a locking unit and a reinforcing unit. The locking unit comprises an abutting portion defining the hole wall of the mounting hole in a shape matching mode, a locking portion connected to the abutting portion, an abutting face and a first screw hole defined by the abutting portion and provided with a first thread. The reinforcing unit can be connected to the locking unit and can rotate around the axis of the locking unit, and the reinforcing unit comprises a contact surface and a second screw hole which corresponds to the first screw hole and is provided with a second thread. The contact face corresponds to the abutting face, and the contact face abuts against the abutting face so that the reinforcing unit can abut against the locking unit.

Description

Technical Field

[0001] The utility model relates to a locking device, in particular to a locking device for fixing a wheel rim. Background Art

[0002] The wheels of existing vehicles, whether they are fuel vehicles or electric vehicles, generally have rims, and multiple locking pieces are used to lock the rims to the hubs. Common hubs generally have two types, one is provided with studs for locking with nut-type locking pieces, and the other is provided with locking holes for locking with bolt-type locking pieces.

[0003] Although existing fasteners can fasten the wheel rim to the hub when the vehicle is not moving, if the wheel is subjected to improper force, the studs or bolt-type fasteners on the hub will be twisted or broken. More specifically, once there is a large temperature difference, vehicle vibration, rapid vehicle movement or braking, in addition to the studs or fasteners being damaged, the fasteners are also prone to loosening or falling off. Furthermore, electric vehicles are now popular, and their instantaneous torque is large and the power output is too fast when starting, making the fasteners very easy to loosen, not only causing damage to the vehicle, but also bringing considerable danger to the driver. Utility Model Content

[0004] The purpose of the utility model is to provide a locking device which can provide a stable fixing function.

[0005] The utility model locking device is suitable for locking a wheel rim to a wheel hub, wherein the wheel rim has a plurality of hole walls, each of which defines a mounting hole, and the locking device is arranged in one of the mounting holes. The locking device comprises a locking unit and a reinforcing unit. The locking unit comprises an abutting portion of the hole wall whose shape matches that of the hole wall defining the mounting hole, a locking portion connected to the abutting portion, an abutting surface, and a first screw hole defined by the abutting portion, wherein the first screw hole has a first thread. The reinforcing unit can be connected to the locking unit and can rotate around the axis of the locking unit, and the reinforcing unit comprises a contact surface, and a second screw hole corresponding to the first screw hole, wherein the second screw hole has a second thread, and the contact surface corresponds to the abutting surface, and the contact surface abuts against the abutting surface so that the reinforcing unit can abut against the locking unit.

[0006] In the locking device of the utility model, the abutting portion comprises an annular section whose outer diameter is larger than that of the locking portion, and a conical section extending from the annular section and whose outer diameter gradually decreases in a direction away from the annular section to form a truncated cone shape.

[0007] In the locking device of the utility model, the locking unit further comprises a protruding portion connected to the locking portion and extending in a direction away from the abutting portion, and the reinforcing unit further comprises a receiving portion for receiving the protruding portion, wherein the receiving portion is connected to the contact surface.

[0008] In the locking device of the utility model, the protruding portion has a locking section, and the accommodating portion has a limiting section whose inner diameter is larger than that of the locking section. The limiting section is used for the locking section to be engaged so that the protruding portion can be fixed to the accommodating portion.

[0009] In the locking device of the utility model, the engaging section has an engaging protrusion, and the limiting section also has an annular groove for accommodating the engaging protrusion.

[0010] In the locking device of the utility model, the engaging section further comprises a first end edge connected to the engaging protrusion, and the limiting section further comprises a first chamfered surface corresponding to the first end edge and used for limiting the first end edge.

[0011] In the locking device of the utility model, the engaging section further comprises a second end edge connected to the engaging protrusion, and the limiting section further comprises a second chamfered surface corresponding to the second end edge and used for limiting the second end edge.

[0012] In the locking device of the present invention, the locking unit is in the form of a nut, and the first screw hole is defined by the abutting portion and the locking portion.

[0013] In the locking device of the utility model, the locking portion has a connecting section, one end of the connecting section is connected to the abutting portion, and the other end of the connecting section is connected to the abutting surface.

[0014] In the locking device of the utility model, the locking unit is in the form of a bolt, the first screw hole passes through the abutting portion, and the locking portion is in the shape of a screw rod and is locked to the first screw hole and the second screw hole.

[0015] In the locking device of the utility model, the reinforcing unit further comprises an elastic ring, and the elastic ring is arranged on the accommodating portion to close the gap between the accommodating portion and the protruding portion.

[0016] The beneficial effect of the utility model is that the locking device abuts against the abutting surface through the contact surface, so that the reinforcing unit and the locking unit abut each other, and the reinforcing unit that can rotate around the axis of the locking unit and has the second thread can make the locking device more tightly fixed to the wheel rim when installed in the mounting hole. In this way, the locking device can avoid falling off or loosening when the vehicle has a temperature difference, vehicle vibration, sudden acceleration or sudden braking, so as to ensure that the wheel rim can be stably locked to the wheel hub. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a perspective view of the first embodiment of the locking device of the utility model, illustrating the assembly relationship with the wheel rim and the wheel hub;

[0018] Figure 2 is a perspective view of the first embodiment;

[0019] Figure 3 The first embodiment is composed of Figure 2 The sectional view obtained by the section line III-III in;

[0020] Figure 4 is a cross-sectional exploded view of the first embodiment;

[0021] Figure 5 is a perspective view of a second embodiment of the locking device of the utility model;

[0022] Figure 6 The second embodiment is composed of Figure 5 The sectional view obtained by the cutting line VI-VI in;

[0023] Figure 7 is a three-dimensional diagram of a third embodiment of the locking device of the utility model;

[0024] Figure 8 The third embodiment is composed of Figure 7 The sectional view obtained by the section line VIII-VIII in;

[0025] Fig. 9 is a perspective view of a fourth embodiment of the locking device of the utility model;

[0026] Fig.10 The fourth embodiment is composed of Fig. 9 The sectional view obtained by the cutting line X-X in. DETAILED DESCRIPTION

[0027] The utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0028] Before the present invention is described in detail, it should be noted that similar elements are represented by the same reference numerals in the following description.

[0029] See also Figures 1 to 4 A first embodiment of the locking device 100 of the utility model is suitable for locking a wheel rim 3 to a wheel hub 4. The wheel rim 3 has a plurality of hole walls 31, each of which defines a mounting hole 32. The wheel hub 4 has a plate 41 and a plurality of screw lock portions 42 corresponding to the mounting holes 32 and in the form of studs. Figure 1 4 , a plurality of locking devices 100 are shown, which are respectively locked and fixed through the mounting holes 32 and the screw lock portions 42 to lock the wheel rim 3 to the wheel hub 4. Each locking device 100 includes a locking unit 1 and a reinforcing unit 2.

[0030] The locking unit 1 is cylindrical and includes a supporting portion 11, a locking portion 12, a protruding portion 13, a supporting surface 14 and a first screw hole 15. The supporting portion 11 is shaped to match the hole wall 31 defining the mounting hole 32, and has an annular section 111 with an outer diameter greater than that of the locking portion 12 and a conical section 112. The conical section 112 extends from the annular section 111, and the outer diameter gradually decreases in a direction away from the annular section 111 to form a truncated cone. The locking portion 12 is connected to the supporting portion 11 and the protruding portion 13, and includes a connecting section 121 and a plurality of first grooves 122. One end of the connecting section 121 is connected to the supporting portion 11, and the other end is connected to the supporting surface 14 and the protruding portion 13, and the supporting surface 14 is arranged around the locking portion 12. The first groove 122 extends axially and is arranged in a ring on the outer circumference of the connecting section 121, but the number and shape thereof are not limited thereto. The design of the locking portion 12 can be adjusted according to the needs of the user to facilitate the application of force. The outer diameter of the protruding portion 13 is smaller than the abutting portion 11 and the locking portion 12, and extends in a direction away from the abutting portion 11. The protruding portion 13 has a snap-fit ​​section 131, and the snap-fit ​​section 131 has a snap-fit ​​protrusion 132, and a first end edge 133 and a second end edge 134 respectively connecting the two ends of the snap-fit ​​protrusion 132. The first screw hole 15 is defined by the abutting portion 11, the locking portion 12 and the protruding portion 13, and has a first thread 151 that can correspond to the screw lock portion 42 of one of the hubs 4.

[0031] The reinforcing unit 2 can be connected to the locking unit 1 and can rotate around the axis of the locking unit 1. The reinforcing unit 2 includes a receiving portion 21, a contact surface 22, a plurality of second grooves 23, a second screw hole 24 and an elastic ring 25. The receiving portion 21 is used to receive the protruding portion 13 and the screw lock portion 42, and has a limiting section 211 whose inner diameter is larger than the engaging section 131. The limiting section 211 is used for the engaging section 131 to engage, so that the protruding portion 13 is fixed to the receiving portion 21. The limiting section 211 has an annular groove 212, and a first chamfered surface 213 and a second chamfered surface 214 respectively located at both ends of the annular groove 212. The annular groove 212 is used to receive the engaging protrusion 132, so that the engaging protrusion 132 can rotate in the annular groove 212. The first chamfered surface 213 corresponds to the first end edge 133 and is used to limit the first end edge 133 so that the engaging section 131 can be limited to the limiting section 211. The second chamfered surface 214 corresponds to the second end edge 134 and is used to limit the second end edge 134 so that the engaging section 131 disposed in the limiting section 211 can not be separated from the limiting section 211. The contact surface 22 is connected to the accommodating portion 21 and corresponds to the abutting surface 14, and the contact surface 22 abuts against the abutting surface 14 so that the reinforcing unit 2 and the locking unit 1 can abut against each other. The second groove 23 extends axially and is annularly arranged on the outer peripheral surface of the accommodating portion 21, but the number and shape thereof are not limited thereto, and the design of the accommodating portion 21 can be adjusted according to user needs to facilitate force application. The second screw hole 24 is defined by the accommodating portion 21 and has a second thread 241. The second screw hole 24 corresponds to the first screw hole 15, and the screw lock portion 42 of one of the hubs 4 can be inserted into the second screw hole 24 after being inserted into the first screw hole 15, so as to lock and fix the wheel rim 3 and the hub 4 through the locking device 100. The elastic ring 25 can be, for example, an O-ring and is disposed in the receiving portion 21 and adjacent to the second chamfered surface 214. The elastic ring 25 can close the gap between the receiving portion 21 and the protruding portion 13, so as to achieve a sealing effect between the two.

[0032] When the locking device 100 is used, the first screw hole 15 and the second screw hole 24 are aligned with one of the screw lock parts 42, and then the locking unit 1 and the reinforcing unit 2 are rotated and locked into the screw lock part 42 at a first pound (for example, a standard locking pound determined according to vehicle specifications). Then, the reinforcing unit 2 is rotated and locked at a second pound (for example, a pound slightly greater than the first pound) to reinforce the reinforcing unit 2 and lock it to the screw lock part 42. In this way, compared to an integrated locking device, in the present invention, when the locking unit 1 and the reinforcing unit 2 are locked with different pounds respectively, that is, the reinforcing unit 2 has a higher degree of locking than the locking unit 1, the rotatable reinforcing unit 2 not only provides a buffer and increases friction to avoid the screw lock portion 42 from breaking, but the second thread 241 of the reinforcing unit 2 can also be more tightly locked to the screw lock portion 42 to avoid the wheel rim 3 from being separated from the wheel hub 4 when the vehicle starts and the torque increases instantly.

[0033] It is additionally noted that the locking unit 1 and the reinforcing unit 2 can be pre-combined or separately formed. In other words, when the business sells the locking device 100, the locking unit 1 and the reinforcing unit 2 can be pre-combined as a product, or the locking unit 1 and the reinforcing unit 2 can be sold separately and then assembled by the user when the user wants to use the device. Both methods can achieve the same effect of preventing the device from loosening.

[0034] In addition, the locking unit 1 and the reinforcing unit 2 can also be subjected to surface treatment respectively. For example, the surface of the locking unit 1 can be galvanized, so that the locking unit 1 can be pressed against the rim 3 more firmly and not easily slide relative to the rim 3, so that the torsional clamping of the locking connection is more durable, thereby reducing the risk of the rim 3 detaching from the hub 4, thereby improving safety. The surface of the reinforcing unit 2 can be chrome-plated to increase its anti-corrosion ability and be more beautiful in appearance. Furthermore, the locking unit 1 and the reinforcing unit 2 can be made of any material to meet the needs of users.

[0035] See also Figure 5 and Figure 6 A second embodiment of the locking device 100 of the present invention is different from the first embodiment in that the locking unit 1 and the reinforcing unit 2 have different shapes and do not have the first groove 122 and the second groove 23, so as to have a simple appearance.

[0036] See also Figure 7 and Figure 8A third embodiment of the locking device 100 of the utility model is different from the first embodiment in that the locking portion 12 is in the shape of a screw and the protruding portion 13 is connected to the abutting portion 11. The first screw hole 15 passes through the abutting portion 11 and the protruding portion 13, and the locking portion 12 is locked to the first screw hole 15 and the second screw hole 24. In the third embodiment, the corresponding screw locking portion 42 of the locking device 100 is in the shape of a hole, and can be locked into the screw-shaped locking portion 12, and the wheel rim 3 and the wheel hub 4 can also be locked and fixed by the locking device 100.

[0037] See also Fig. 9 and Fig.10 A fourth embodiment of the locking device 100 of the utility model is different from the first embodiment in that the locking unit 1 does not have the protruding portion 13 and the accommodating portion 21 of the reinforcing unit 2 does not have the limiting section 211. Instead, the contact surface 22 and the abutting surface 14 are abutted against each other, and the first screw hole 15 and the second screw hole 24 are locked with the locking portion 12 to connect the locking unit 1 and the reinforcing unit 2, thereby reducing the weight of the locking device 100.

[0038] As illustrated in the aforementioned embodiments, the appearance and internal structure of the locking device 100 can be adjusted according to usage requirements. In the varied implementations, a special shape can be designed to be rotated by a specific auxiliary tool, thereby achieving the anti-theft function.

[0039] In summary, the locking device 100 abuts against the abutting surface 14 through the contact surface 22, so that the reinforcing unit 2 and the locking unit 1 abut against each other, and the reinforcing unit 2 that can rotate around the axis of the locking unit 1 and has the second thread 241 can make the locking device 100 more tightly fixed to the wheel rim 3 when installed in the mounting hole 32. In this way, the locking device 100 can avoid falling off or loosening when the vehicle has a temperature difference, a vehicle vibration, a sudden acceleration or a sudden brake, so that the wheel rim 3 can be stably locked to the wheel hub 4, so the purpose of the utility model can be achieved.

[0040] However, the above is only an embodiment of the present invention and should not be used to limit the scope of the present invention. All simple equivalent changes and modifications made according to the claims and description of the present invention are still within the scope of the present invention.

Claims

1. A locking device, suitable for locking a wheel rim to a wheel hub, wherein the wheel rim has a plurality of hole walls, each of which defines a mounting hole, and the locking device is disposed in one of the mounting holes; characterized in that: The locking device comprises: A locking unit, comprising abutting portion whose shape matches that of the hole wall defining the mounting hole, a locking portion connected to thebutting portion, abutting surface, and a first screw hole defined by thebutting portion, wherein the first screw hole has a first thread; and A reinforcing unit can be connected to the locking unit and can rotate around the axis of the locking unit. The reinforcing unit includes a contact surface and a second screw hole corresponding to the first screw hole. The second screw hole has a second thread. The contact surface corresponds to the abutting surface, and the contact surface abuts against the abutting surface so that the reinforcing unit and the locking unit can abut against each other.

2. The locking device according to claim 1, characterized in that: The abutting portion comprises an annular section whose outer diameter is larger than that of the locking portion, and a conical section extending from the annular section and having an outer diameter gradually decreasing in a direction away from the annular section to form a truncated cone shape.

3. The locking device according to claim 1, characterized in that: The locking unit further includes a protruding portion connected to the locking portion and extending in a direction away from the abutting portion, and the reinforcing unit further includes a receiving portion for receiving the protruding portion, wherein the receiving portion is connected to the contact surface.

4. The locking device according to claim 3, characterized in that: The protruding portion has a clamping section, and the accommodating portion has a limiting section whose inner diameter is larger than that of the clamping section. The limiting section is used for being clamped by the clamping section so that the protruding portion can be fixed to the accommodating portion.

5. The locking device according to claim 4, characterized in that: The engaging section has an engaging protrusion, and the limiting section also has an annular groove for accommodating the engaging protrusion.

6. The locking device according to claim 5, characterized in that: The engaging section further comprises a first end edge connected to the engaging protrusion, and the limiting section further comprises a first chamfered surface corresponding to the first end edge and used for limiting the first end edge.

7. The locking device according to claim 5, characterized in that: The engaging section further comprises a second end edge connected to the engaging protrusion, and the limiting section further comprises a second chamfered surface corresponding to the second end edge and used for limiting the second end edge.

8. The locking device according to claim 1, characterized in that: The locking unit is in the form of a nut, and the first screw hole is defined by the abutting portion and the locking portion.

9. The locking device according to claim 8, characterized in that: The locking portion has a connecting section, one end of which is connected to the abutting portion, and the other end of which is connected to the abutting surface.

10. The locking device according to claim 1, characterized in that: The locking unit is in the form of a bolt, the first screw hole passes through the abutting portion, and the locking portion is in the shape of a screw rod and is locked to the first screw hole and the second screw hole.

11. The locking device according to claim 3, characterized in that: The reinforcing unit further includes an elastic ring, which is disposed on the accommodating portion to close a gap between the accommodating portion and the protruding portion.

Images