High-precision gear rotating shaft for notebook computer and machining method of high-precision gear rotating shaft

Abstract

The invention discloses a high-precision gear rotating shaft for a notebook computer, which comprises a rotating shaft body, the rotating shaft body is respectively arranged at the joint of a screen part and a keyboard part of the notebook computer, and the rotating shaft body adopts a quick switch structure; the quick switch structure comprises a limiting structure for connecting the rotating shaft bodies with the screen part and the keyboard part, and a transmission structure for matching the two rotating shaft bodies with each other; and the quick switch structure is integrally processed and formed. Through the mode, according to the high-precision gear rotating shaft for the notebook computer and the machining method of the high-precision gear rotating shaft, the high-precision gear rotating shaft machined through the machining method is provided with a rapid switch structure, the notebook computer can be rapidly turned on and turned off, and the rotating angle is half of the opening angle and the closing angle; and the opening and closing speed of the screen of the notebook computer is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the field of laptop manufacturing, and particularly relates to a high-precision gear rotating shaft for a laptop and a processing method thereof. Background Art

[0002] The screen folding structure is an important part of laptop design, mainly involving how to combine the screen and the body to facilitate opening and closing and protect the screen. Usually, hinges made of metal or plastic are used to support the connection between the screen and the body. The hinge design must be strong enough to withstand frequent opening and closing operations. Generally, it is located at the edge between the screen and the body, allowing the screen to be opened and closed at a certain angle.

[0003] Traditional hinges are mainly composed of two or more components connected by a fixed shaft. Their main function is to allow the connected components to rotate around a fixed point, usually only providing opening and closing movements. The actual rotation angle during opening and closing is the opening and closing angle. Summary of the Invention

[0004] The main technical problem to be solved by the present invention is to provide a high-precision gear rotating shaft for a laptop and a processing method thereof, which can quickly open and close the laptop.

[0005] To solve the above technical problem, a technical solution adopted by the present invention is: to provide a high-precision gear rotating shaft for a laptop, including a rotating shaft body, the rotating shaft body is respectively installed at the connection of the screen part and the keyboard part of the laptop, and the rotating shaft body adopts a quick-switch structure;

[0006] The quick-switch structure includes a limiting structure for connecting the rotating shaft body with the screen part and the keyboard part and a transmission structure for the two rotating shaft bodies to cooperate with each other;

[0007] The quick-switch structure is integrally processed and formed.

[0008] In a preferred embodiment of the present invention, the limiting structure includes a shaft body and a limiting block, and the shaft body is connected to the limiting block through a first rotating groove.

[0009] In a preferred embodiment of the present invention, the shaft body is symmetrically provided with a first relief surface and a second relief surface connected thereto and parallel to it up and down. The first relief surface and the second relief surface make the shaft body form four edges, and gasket grooves are provided on the edges. The gasket grooves communicate with the first relief surface and the second relief surface.

[0010] In a preferred embodiment of the present invention, the width of the first relief surface is greater than the width of the second relief surface, and a stop edge is formed at the connection of the first relief surface and the second relief surface.

[0011] In a preferred embodiment of the present invention, the limiting block is symmetrically provided with limiting surfaces up and down, and the limiting surfaces are parallel to both the first relief surface and the second relief surface.

[0012] In a preferred embodiment of the present invention, the transmission structure includes a gear and a base, the gear is connected to the base through a second rotation groove, and the limiting structure and the transmission structure are respectively connected through the first relief surface end and the gear end.

[0013] To solve the above technical problems, a processing method for a high-precision gear shaft for a notebook computer is also provided, and the specific steps include:

[0014] 1) Turning the outer circle: First, turn the outer circle of the blank, and turn the blank into a first section, a second section, and a third section;

[0015] 2) Machining the gear: Milling the teeth of the second section in the step 1) to obtain the gear;

[0016] 3) First milling the plane: First, perform the first milling of the plane on the blank after machining the gear in the step 2) to obtain the first relief surface, and then perform the second milling of the plane to obtain the second relief surface;

[0017] 4) Milling the groove: Milling the groove on the blank after the first milling of the plane in the step 3) to sequentially obtain the first rotation groove, the second rotation groove, and the gasket groove;

[0018] 5) Second milling the plane: Perform the second milling of the plane on the blank after milling the groove in the step 4) to obtain the limiting surface;

[0019] 6) Turning the chamfer: Turn the chamfers on the left side of the first section, both sides of the gear, and the right side of the third section of the blank after the second milling of the plane in the step 5) to obtain the gear shaft;

[0020] 7) Processing and inspection: After heat-treating the gear shaft in the step 6), perform inspections on its dimensions, hardness, and surface roughness to ensure that the processing quality of the gear shaft meets the design requirements and industry standards.

[0021] In a preferred embodiment of the present invention, through the heat treatment in the step 7), the surface hardness of the gear shaft is HV540 - 580, and the core hardness is HV450 - 480.

[0022] The beneficial effects of the present invention are as follows: A high-precision gear shaft for a notebook computer and its processing method according to the present invention. The high-precision gear shaft processed by this processing method has a quick-switching structure, which can quickly open and close the notebook computer. The rotation angle is half of the opening and closing angles, greatly improving the opening and closing speed of the notebook computer screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. is a perspective view of a high-precision gear shaft for a notebook computer.

[0024] Figure 2 FIG. is a top view of a high-precision gear shaft for a notebook computer.

[0025] Figure 3 FIG. is a working schematic diagram of a traditional hinge structure.

[0026] Figure 4 FIG. is a working schematic diagram of a high-precision gear shaft for a notebook computer.

[0027] The marks of each component in the drawings are as follows: 1, shaft body; 2, limit block; 3, first rotation groove; 4, first relief surface; 5, second relief surface; 6, gasket groove; 7, limit surface; 8, gear; 9, second rotation groove; 10, base. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following elaborates on the preferred embodiments of the present invention in detail with reference to the drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making the protection scope of the present invention more clearly defined.

[0029] Please refer to Figures 1 to 4 , the embodiments of the present invention include:

[0030] A high-precision gear shaft for a notebook computer, including a shaft body. The shaft body is respectively installed at the connection between the screen part and the keyboard part of the notebook computer. The shaft body adopts a quick-switching structure, which can quickly open and close the notebook computer. The rotation angle is half of the opening and closing angles, greatly improving the opening and closing speed of the notebook computer screen.

[0031] The quick-switching structure includes a limiting structure for connecting the shaft body with the screen part and the keyboard part, and a transmission structure for the two shaft bodies to cooperate with each other. The quick-switching structure is integrally processed and formed.

[0032] The limiting structure includes a shaft body 1 and a limiting block 2. The shaft body 1 is connected to the limiting block 2 through a first rotating groove 3. The first rotating groove 3 is used to cooperate with the installation structure to play a role in supporting during rotation. The limiting block 2 is used to be installed and connected to the screen part and the keyboard part, playing a limiting role to prevent relative movement between the shaft body 1 and the screen part and the keyboard part when the shaft body 1 rotates.

[0033] The shaft body 1 is symmetrically provided with a first relief surface 4 and a second relief surface 5 connected thereto and parallel to it up and down. The first relief surface 4 and the second relief surface 5 make the shaft body 1 form four edges, and a gasket groove 6 is provided on the edges. The gasket groove 6 communicates with the first relief surface 4 and the second relief surface 5. The first relief surface 4 and the second relief surface 5 reduce the contact area between the shaft body 1 and the round holes on the screen part and the keyboard part, reducing friction.

[0034] The gasket groove 6 is used to make way for the support gasket in the round hole, so that the shaft body 1 rotates more smoothly in the central hole of the support gasket.

[0035] The width of the first relief surface 4 is greater than the width of the second relief surface 5. A stop edge is formed at the connection between the first relief surface 4 and the second relief surface 5. The stop edge is used for limiting the support gasket to make it located in the middle position of the shaft body 1.

[0036] The limiting block 2 is symmetrically provided with limiting surfaces 7 up and down. The limiting surfaces 7 are parallel to both the first relief surface 4 and the second relief surface 5. The limiting surfaces 7 play a limiting role to prevent relative movement between the shaft body 1 and the screen part and the keyboard part when the shaft body 1 rotates.

[0037] The transmission structure includes a gear 8 and a base 10. The gear 8 is connected to the base 10 through a second rotating groove 9. The limiting structure and the transmission structure are respectively connected through the first relief surface 4 end and the gear 8 end. The second rotating groove 9 is used to cooperate with the installation structure to play a role in supporting the other end of the rotating shaft of the gear 8 during rotation.

[0038] A processing method for a high-precision gear 8 rotating shaft of a notebook computer specifically includes the following steps:

[0039] 1) Turning the outer circle: First, turn the outer circle of the blank. The blank is turned into a first section, a second section, and a third section, with lengths of 11.68 mm, 1.85 mm, and 1.15 mm respectively.

[0040] 2) Processing the gear 8: Milling teeth on the second section in the step 1) to obtain the gear 8, with an outer diameter Inner diameter

[0041] 3) First milling of the flat surface: First perform the first milling of the flat surface on the blank after machining the gear 8 in the step 2) to obtain the first relief surface 4, with a length of 9.64 mm and a width of 0.9 ± 0.02 mm. Then perform the second milling of the flat surface to obtain the second relief surface 5, with a length of 8.23 mm and a width of 1.02 ± 0.02 mm.

[0042] 4) Grooving: Perform grooving on the blank after the first milling of the flat surface in the step 3) to sequentially obtain the first rotating groove 3 with a length of 0.85 ± 0.02 mm and an outer diameter of 1 ± 0.02 mm, the second rotating groove 9 with a length Outer diameter and the spacer groove 6 with a length of 3.14 ± 0.07 mm and a width

[0043] 5) Second milling of the flat surface: Perform the second milling of the flat surface on the blank after grooving in the step 4) to obtain the limiting surface 7 with a length of 1 ± 0.03 mm and a width of 1.28 ± 0.02 mm.

[0044] 6) Chamfering: Chamfer the left side of the first section, both sides of the gear 8, and the right side of the third section of the blank after the second milling of the flat surface in the step 5), with the dimensions C0.1, C0.3, and C0.15 respectively, to obtain the gear 8 rotating shaft.

[0045] 7) Heat treatment and inspection: After heat-treating the gear 8 rotating shaft in the step 6), perform inspections on its dimensions, hardness, and surface roughness, so that the surface hardness of the gear 8 rotating shaft is HV540 - 580, and the core hardness is HV450 - 480, ensuring that the processing quality of the gear 8 rotating shaft meets the design requirements and industry standards.

[0046] The parallelism of the first relief surface 4, the second relief surface 5, and the limiting surface 7 is 0.02 mm.

[0047] Different from the prior art, a high-precision gear rotating shaft for a notebook computer and its processing method according to the present invention. The high-precision gear rotating shaft processed by this processing method has a quick-switch structure, can quickly open and close the notebook computer, and the rotation angle is half of the opening and closing angles, greatly improving the opening and closing speed of the notebook computer screen.

[0048] In the description of the present invention, it should be noted that the components are all common standard components or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or through conventional test methods. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use. It 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 should not be construed as a limitation to the present invention.

[0049] The above are only embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A high-precision gear shaft for a notebook computer, comprising a shaft body, wherein the shaft body is respectively installed at the connection between the screen part and the keyboard part of the notebook computer, and characterized in that: The rotating shaft body adopts a quick switch structure; The fast switch structure includes a limit structure for connecting the rotating shaft body with the screen part and the keyboard part, and a transmission structure for the two rotating shaft bodies to cooperate with each other; The fast switch structure is formed by integral processing.

2. The high-precision gear shaft for a notebook computer according to claim 1, characterized in that: The limiting structure includes an axle body and a limiting block, and the axle body is connected to the limiting block through a first rotation groove.

3. The high-precision gear shaft for a notebook computer according to claim 2, characterized in that: The shaft body is symmetrically provided with a first give-way surface and a second give-way surface connected and parallel thereto, the first give-way surface and the second give-way surface form four edges on the shaft body, the edges are provided with gasket grooves, and the gasket grooves connect the first give-way surface and the second give-way surface.

4. The high-precision gear shaft for a notebook computer according to claim 3, characterized in that: The width of the first clearance surface is greater than the width of the second clearance surface, and a retaining edge is formed at the connection between the first clearance surface and the second clearance surface.

5. The high-precision gear shaft for a notebook computer according to claim 4, characterized in that: The limit block has a limit surface symmetrically arranged in the upper and lower parts, and the limit surface is parallel to both the first making way surface and the second making way surface.

6. The high-precision gear shaft for a notebook computer according to claim 5, characterized in that: The transmission structure comprises a gear and a base, the gear is connected to the base via a second rotation groove, and the limiting structure and the transmission structure are respectively connected to the gear end via the first yielding surface end.

7. The method for processing a high-precision gear shaft for a notebook computer as claimed in claim 1, characterized in that: The specific steps include: 1) Turning the outer circle: First, turn the outer circle of the blank into the first section, the second section and the third section; 2) Processing the gear: milling the second section in step 1) to obtain the gear; 3) First plane milling: the blank after the gear is processed in step 2) is first plane milled to obtain the first clearance surface, and then second plane milling is performed to obtain the second clearance surface; 4) Groove milling: groove milling is performed on the blank after the first plane milling in step 3), so as to obtain the first rotary groove, the second rotary groove and the gasket groove in sequence; 5) Second milling of the plane: performing a second milling of the plane on the blank after the groove is milled in step 4) to obtain the limiting surface; 6) Chamfering: Chamfering the left side of the first section, the two sides of the gear and the right side of the third section of the blank after the second milling in step 5) to obtain a gear shaft; 7) Processing and testing: After the gear shaft in step 6) is heat treated, its size, hardness and surface roughness are tested to ensure that the processing quality of the gear shaft meets the design requirements and industry standards.

8. The method for processing a high-precision gear shaft for a notebook computer according to claim 7, characterized in that: In the step 7), the heat treatment is performed so that the surface hardness of the gear shaft is HV540-580 and the core hardness is HV450-480.

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