Plastic hinge device

Abstract

The utility model discloses a plastic hinge device which comprises a first blade and a second blade, the first blade and the second blade are both rotatably connected with a pivot through a bearing, a first mounting hole is formed in the first blade, a second mounting hole is formed in the second blade, a first hinge lug is integrally arranged on the first blade, and a second hinge lug is integrally arranged on the second blade. A first hinge lug is integrally arranged on the first blade, a second hinge lug is integrally arranged on the second blade, the first hinge lug and the second hinge lug are jointly and rotationally connected with a pivot through a bearing, and a first bearing mounting hole is formed in the first hinge lug at the end of the first blade. And the pivot is butted with the bearing, so that the friction rotation between the pivot and the blade in the existing hinge is converted into the bearing rotation mode, the friction force is effectively reduced, the abrasion is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic hinges, in particular to a plastic hinge device. Background Art

[0002] A hinge is a mechanical device used to connect two solid objects and allow them to rotate relative to each other. Hinges can be made of movable components or foldable materials. Hinges are often installed on cabinets and are categorized by material into stainless steel and iron hinges. To provide a more comfortable experience, hydraulic hinges (also known as damping hinges) have emerged. Their characteristic is that they provide a cushioning effect when the cabinet door closes, minimizing the noise caused by the door colliding with the cabinet body.

[0003] Current plastic hinges are primarily composed of two leaflets connected by a pivot. However, the coefficient of friction of plastic is higher than that of metal, and its wear resistance is much lower than that of metal. Frequent rotation of the plastic hinge causes friction and wear between the pivot and the two leaflets, shortening the service life of the plastic hinge. Utility Model Content

[0004] In view of the problems existing in the existing plastic hinge device, the present utility model is proposed.

[0005] Therefore, the purpose of the present invention is to provide a plastic hinge device that solves the problem that the current plastic hinge is mainly composed of two leaf plates hinged by a pivot. However, since the friction coefficient of plastic is relatively large compared to that of metal, and the wear resistance of plastic is also much lower than that of metal; therefore, the plastic hinge is prone to friction and wear between the pivot and the two leaf plates under frequent rotation, thereby resulting in a short service life of the plastic hinge.

[0006] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] A plastic hinge device comprises a first blade and a second blade, wherein the first blade and the second blade are rotatably connected to a pivot through a bearing.

[0008] As a preferred solution of the plastic hinge device described in the present invention, a first mounting hole is formed on the first blade, and a second mounting hole is formed on the second blade.

[0009] As a preferred solution of the plastic hinge device described in the present invention, the first blade is integrally provided with a first hinge ear, the second blade is integrally provided with a second hinge ear, and the first hinge ear and the second hinge ear are both rotatably connected to the pivot through a bearing.

[0010] As a preferred solution of the plastic hinge device described in the present invention, a first bearing mounting hole is provided on the first hinge ear at the end of the first blade, the bearing is installed in the first bearing mounting hole, and a first through hole for the pivot to pass through is provided on the remaining first hinge ears, and the aperture of the first through hole is larger than the diameter of the pivot.

[0011] As a preferred solution of the plastic hinge device described in the present invention, a second bearing mounting hole is provided on the second hinge ear at the end of the second blade, the bearing is installed in the second bearing mounting hole, and a second through hole for the pivot to pass through is provided on the remaining second hinge ears, and the aperture of the second through hole is larger than the diameter of the pivot.

[0012] As a preferred solution of a plastic hinge device described in the present invention, a first bearing mounting groove and a third through-hole are provided on the first hinge ear at the end of the first blade, the bearing is installed in the first bearing mounting groove, and the aperture of the third through-hole is larger than the diameter of the pivot.

[0013] As a preferred solution of a plastic hinge device described in the present invention, a second bearing mounting groove and a fourth through-hole are provided on the second hinge ear at the end of the second blade, the bearing is installed in the second bearing mounting groove, and the aperture of the fourth through-hole is larger than the diameter of the pivot.

[0014] Compared with existing technologies:

[0015] By installing bearings on the hinge ears at the ends of the two blades and then docking the pivot with the bearings, the friction rotation between the pivot and the blades in the existing hinge is converted into bearing rotation, thereby effectively reducing friction, thereby reducing wear and increasing service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of Example 1 of the present utility model;

[0017] Figure 2 Provided in Example 1 of the present utility model Figure 1 Exploded diagram;

[0018] Figure 3 Provided in Example 1 of the present utility model Figure 1 Exploded view from above;

[0019] Figure 4 Provided for Example 2 of the present utility model Figure 1 Exploded view from above.

[0020] In the figure: first blade 10, first hinged ear 11, first through hole 111, first bearing mounting hole 112, first bearing mounting groove 113, third through hole 114, first mounting hole 12, second blade 20, second hinged ear 21, second through hole 211, second bearing mounting hole 212, second bearing mounting groove 213, fourth through hole 214, second mounting hole 22, bearing 30, pivot 40. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0022] Example 1:

[0023] This utility model provides a plastic hinge device, please refer to Figure 1-3 , including a first blade 10 and a second blade 20, which are both rotated together to connect the pivot 40 through a bearing 30, thereby converting the friction rotation between the blades and the pivot in the existing hinge into a rotation method using bearings, thereby effectively reducing friction and increasing the service life of the hinge.

[0024] A first mounting hole 12 is defined on the first blade 10 , and a second mounting hole 22 is defined on the second blade 20 . The hinge is installed using the first mounting hole 12 and the second mounting hole 22 .

[0025] The first blade 10 is integrally provided with a first hinged lug 11 , and the second blade 20 is integrally provided with a second hinged lug 21 . The first hinged lug 11 and the second hinged lug 21 are both rotatably connected to the pivot 40 via a bearing 30 .

[0026] A first bearing mounting hole 112 is provided on the first hinged ear 11 at the end of the first blade 10, and the bearing 30 is installed in the first bearing mounting hole 112. The outer wall of the bearing 30 and the inner wall of the first bearing mounting hole 112 are bonded by glue. The rest of the first hinged ear 11 is provided with a first through hole 111 for the pivot 40 to pass through. The aperture of the first through hole 111 is larger than the diameter of the pivot 40, so that the pivot 40 does not contact the inner wall of the first hinged ear 11, so that the pivot 40 does not generate friction with the first blade 10; the pivot 40 passes through the bearing 30, and the inner wall of the bearing 30 and the pivot 40 can be bonded by glue.

[0027] A second bearing mounting hole 212 is provided on the second hinged ear 21 at the end of the second blade 20, and the bearing 30 is installed in the second bearing mounting hole 212. The outer wall of the bearing 30 and the inner wall of the second bearing mounting hole 212 can be bonded by glue. The rest of the second hinged ear 21 is provided with a second through hole 211 for the pivot 40 to pass through. The aperture of the second through hole 211 is larger than the diameter of the pivot 40, so that the pivot 40 does not contact the inner wall of the second hinged ear 21, and thus no friction is generated between the pivot 40 and the second blade 20.

[0028] During actual use, glue is applied on the inner wall of the first bearing mounting hole 112, and the bearing 30 is inserted into the first bearing mounting hole 112. Then glue is applied on the inner wall of the second bearing mounting hole 212, and the bearing 30 is inserted into the second bearing mounting hole 212. Glue is applied on the inner walls of both bearings 30, and the pivot 40 is passed through the two bearings 30, so that the bearing 30 and the pivot 40 are tightly plugged together.

[0029] Example 2:

[0030] Refer to the attached Figure 4 , different from Example 1: a first bearing mounting groove 113 and a third through-hole 114 are formed on the first hinged ear 11 at the end of the first blade 10, the bearing 30 is mounted in the first bearing mounting groove 113, and the aperture of the third through-hole 114 is larger than the diameter of the pivot 40; a second bearing mounting groove 213 and a fourth through-hole 214 are formed on the second hinged ear 21 at the end of the second blade 20, the bearing 30 is mounted in the second bearing mounting groove 213, and the aperture of the fourth through-hole 214 is larger than the diameter of the pivot 40; at this time, the bearing will not accidentally fall out from both sides, so the installation is more reliable.

[0031] During specific use, the bearing 30 is inserted into the first bearing installation groove 113 , and then the bearing 30 is inserted into the second bearing installation groove 213 ; glue is applied on the inner walls of the two bearings 30 , and the pivot 40 is passed through the two bearings 30 .

[0032] While the present invention has been described above with reference to specific embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as no structural conflicts exist, the various features of the embodiments disclosed herein may be combined with one another in any manner, and the omission of an exhaustive description of these combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A plastic hinge device comprising a first leaf (10) and a second leaf (20), characterized in that: The first blade (10) and the second blade (20) are both rotatably connected to a pivot shaft (40) via a bearing (30); The first blade (10) is integrally provided with a first hinged ear (11), and the second blade (20) is integrally provided with a second hinged ear (21). The first hinged ear (11) and the second hinged ear (21) are both rotatably connected to a pivot shaft (40) via a bearing (30).

2. A plastic hinge device according to claim 1, characterized in that: A first mounting hole (12) is provided on the first blade (10), and a second mounting hole (22) is provided on the second blade (20).

3. A plastic hinge device according to claim 2, characterized in that: A first bearing mounting hole (112) is provided on the first hinged ear (11) at the end of the first blade (10), and the bearing (30) is installed in the first bearing mounting hole (112). The remaining first hinged ears (11) are provided with first through holes (111) for the pivot (40) to pass through, and the aperture of the first through holes (111) is larger than the diameter of the pivot (40).

4. A plastic hinge device according to claim 3, characterized in that: A second bearing mounting hole (212) is provided on the second hinged ear (21) at the end of the second blade (20), and the bearing (30) is installed in the second bearing mounting hole (212). The remaining second hinged ears (21) are provided with second through holes (211) for the pivot (40) to pass through, and the aperture of the second through holes (211) is larger than the diameter of the pivot (40).

5. The plastic hinge device according to claim 3, characterized in that: A first bearing mounting groove (113) and a third through-hole (114) are provided on the first hinged ear (11) at the end of the first blade (10); the bearing (30) is mounted in the first bearing mounting groove (113); and the diameter of the third through-hole (114) is larger than the diameter of the pivot (40).

6. A plastic hinge device according to claim 3, characterized in that: A second bearing mounting groove (213) and a fourth through-hole (214) are provided on the second hinged ear (21) at the end of the second blade (20); the bearing (30) is mounted in the second bearing mounting groove (213); and the diameter of the fourth through-hole (214) is larger than the diameter of the pivot (40).

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