Super wear-resistant double hinge structure

Abstract

The invention discloses a super wear-resistant double hinge structure, including two shaft plates, a gear seat, a friction plate, and a plurality of elastic washers; wherein, the right part of the shaft plate is provided with a gear shaft extending horizontally to the right, and the gear shaft includes a gear, a special-shaped shaft, a transition shaft, and a connecting screw from left to right in sequence; a perforation is provided on the friction plate; an idler wheel is provided between the two gears; the two special-shaped shafts are sleeved with a first friction plate and a second friction plate, and the perforation is located between the first friction plate and the second friction plate, the first friction plate and the second friction plate are non-rotatable relative to the corresponding special-shaped shaft, and the special-shaped shaft is rotatable relative to the corresponding perforation; the connecting screw is threaded with a limit nut, and the transition shaft is sleeved with an elastic washer; the friction plate is uniformly distributed with a plurality of oil grooves around the perforation, the oil grooves are filled with lubricating oil, and the extension direction of the oil grooves passes through the center of the corresponding perforation and then is radially distributed. The advantages are: smooth operation and long service life.

Description

Technical Field

[0001] The invention relates to the technical field of electronic product accessories, and in particular to a super wear-resistant double hinge structure. Background Art

[0002] Double hinges are often used in electronic products such as laptops to achieve the opening and closing of the display screen relative to the motherboard. In order to achieve the effect of making the display screen and the motherboard have an arbitrary angle, it is often achieved through the friction generated between the friction sheet and the friction plate. At the same time, most friction plates are equipped with oil grooves, and lubricating oil is set in the oil grooves to ensure smooth operation between components. Common oil grooves are either spiral oil point structures or matrix oil point structures, such as Figure 1-1 and Figure 1-2 Its defects are: the wear resistance is not ideal and it is easy to produce jumping phenomenon. Summary of the invention

[0003] The object of the present invention is to provide a super wear-resistant double hinge structure which has the characteristics of smooth operation and long service life.

[0004] The technical solution adopted by the present invention is:

[0005] Super wear-resistant double hinge structure, including 2 shaft plates, 1 gear seat, 1 friction plate, and several elastic washers;

[0006] in,

[0007] The right part of the shaft plate is provided with a gear shaft extending horizontally to the right, and the gear shaft includes a gear, a special-shaped shaft, a transition shaft, and a connecting screw from left to right.

[0008] The gear seat is provided with two assembly holes, one in front and one in the back, both extending in the left-right direction;

[0009] The friction plate is provided with two through holes corresponding to the two assembly holes in pairs;

[0010] at the same time,

[0011] The two gear shafts pass through the two assembly holes from left to right respectively;

[0012] Two gears are located inside the gear seat, and an idler gear is provided between the two gears;

[0013] The two special-shaped shafts are both located on the right side of the outer portion of the gear seat and pass through the corresponding through holes to the right. The first friction plate and the second friction plate are sleeved on the two special-shaped shafts from left to right. The through holes are located between the first friction plate and the second friction plate. The first friction plate and the second friction plate are non-rotatable relative to the corresponding special-shaped shafts, and the special-shaped shafts are rotatable relative to the corresponding through holes.

[0014] The connecting screws are all threadedly connected with limit nuts, and the transition shafts are all sleeved with elastic washers, which are located between the corresponding second friction plates and the limit nuts;

[0015] A plurality of oil grooves are evenly distributed around the perforations on the friction plate. The oil grooves are filled with lubricating oil, and the extending directions of the oil grooves pass through the centers of the corresponding perforations and are then distributed radially.

[0016] The outer edges of the oil grooves are connected to form a circle with a diameter of D and a radius of R, the inner edges of the oil grooves are connected to form a circle with a diameter of d and a radius of r, the depth of the oil groove is H, the arc is α, the total oil storage capacity of the oil groove around a perforation is S, the total area is A, and

[0017]

[0018] S=A×H×N.

[0019] There are at least three oil grooves surrounding one through hole.

[0020] The surface of the first friction plate or the second friction plate contacting the corresponding oil groove is planar.

[0021] A positioning shaft passes through the gear seat from top to bottom, and the idler wheel is sleeved on the positioning shaft.

[0022] The super wear-resistant double hinge structure also includes a cam plate, which is provided with two through holes, and positioning grooves are provided on the right side surface of the cam plate around the corresponding through holes. At the same time, the gear shaft passes through the corresponding through holes, and positioning cams are sleeved on the two transition shafts, and the positioning cams and the positioning grooves match each other.

[0023] The cam plate is provided with a stud extending to the right, the front side and the rear side of the stud are provided with accommodating grooves, and the side of the limiting nut is pressed on the right end surface of the stud.

[0024] Compared with the prior art, the present invention has the advantages of smooth operation and long service life. The super wear-resistant double hinge structure of the present invention ensures that the components have a relatively balanced friction force on the basis of forming a double hinge by setting evenly distributed oil grooves, and the oil grooves and the plane are matched, especially the relationship between parameters such as the amount of oil used is reasonably set, so that there will be no jumping and the like between the components, and the service life of the components is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0026] Figure 1-1 and Figure 1-2 They are schematic diagrams of the spiral oil dot structure and the matrix oil dot structure of the prior art respectively;

[0027] Figure 2 is a three-dimensional exploded schematic diagram of a super wear-resistant double hinge structure of an embodiment of the present invention;

[0028] Figure 3 It is a front schematic view of the oil tank of the present invention.

[0029] In the figure:

[0030] 10. shaft plate, 11. gear shaft, 12. gear, 13. special-shaped shaft, 14. transition shaft, 15. connecting screw;

[0031] 20. gear seat, 21. assembly hole, 22. positioning shaft, 23. idler wheel;

[0032] 30, friction plate, 31, perforation, 32, oil groove;

[0033] 40. Elastic gasket;

[0034] 51, a first friction plate, 52, a second friction plate;

[0035] 60. Positioning cam;

[0036] 70. Limit nut;

[0037] 81. cam plate, 811. through hole, 812. positioning groove, 82. stud, 821. receiving groove. DETAILED DESCRIPTION

[0038] For example, see Figure 2 and Figure 3 As shown: the super wear-resistant double hinge structure includes two shaft plates 10, a gear seat 20, a friction plate 30, a plurality of elastic washers 40 and other components. The shaft plate 10 is generally used to fix the main board and display screen of electronic products such as laptop computers.

[0039] in:

[0040] The right part of the shaft plate 10 is provided with a gear shaft 11 extending horizontally to the right. The gear shaft 11 includes a gear 12, a special-shaped shaft 13, a transition shaft 14, and a connecting screw 15 from left to right. The special-shaped shaft 13 refers to a shaft with a non-circular cross section. In this embodiment, the cross section of the special-shaped shaft 13 is waist-shaped, that is, a plane parallel to the axis of the blank shaft is formed on the front and rear sides of a blank shaft with a circular cross section. Moreover, the outer diameter of the gear 12 should be larger than the diameter of the blank shaft, the diameter of the blank shaft should be larger than the diameter of the transition shaft 14, and the diameter of the transition shaft 14 should be larger than the outer diameter of the connecting screw 15.

[0041] The gear seat 20 is provided with two assembly holes 21 , one in front and one in the back, both extending in the left-right direction.

[0042] The friction plate 30 is provided with two through holes 31 corresponding to the two assembly holes 21 in pairs.

[0043] at the same time:

[0044] The two gear shafts 11 pass through the two assembly holes 21 from left to right respectively.

[0045] The two gears 12 are located inside the gear seat 20, and an idler gear 23 is disposed between the two gears 12. That is, the idler gear 23 meshes with the two gears 12 at the same time, ensuring that the two gears 12 always rotate synchronously in opposite directions.

[0046] The two special-shaped shafts 13 are both located on the right side of the outer portion of the gear seat 20 and pass through the corresponding through-holes 31 to the right. The first friction plate 51 and the second friction plate 52 are sleeved on the two special-shaped shafts 13 from left to right. The through-holes 31 are located between the corresponding first friction plates 51 and the second friction plates 52. The first friction plates 51 and the second friction plates 52 are non-rotatable relative to the corresponding special-shaped shafts 13, and the special-shaped shafts 13 are rotatable relative to the corresponding through-holes 31. That is, the middle portions of the first friction plates 51 and the second friction plates 52 have special-shaped holes with the same cross-section as the special-shaped shafts 13, and the special-shaped shafts 13 pass through the special-shaped holes.

[0047] The connecting screw rods 15 are all threadedly connected with the limiting nuts 70 , and the transition shafts 14 are all sleeved with a plurality of elastic washers 40 , which are located between the corresponding second friction plates 52 and the limiting nuts 70 .

[0048] Further speaking:

[0049] The friction plate 30 has a plurality of oil grooves 32 evenly distributed around the through hole 31. The oil grooves 32 are filled with lubricating oil, and the extending direction of the oil grooves 32 passes through the center of the corresponding through hole 31 and then is radially distributed. That is, a single oil groove 32 is fan-shaped, and such an oil groove 32 can be called a sunflower-shaped oil groove. Since the oil grooves 32 are evenly distributed at equal intervals and radially outward, the lubrication effect is uniform, the workpiece is not easy to wear, and the life of the workpiece can be increased to at least twice the original design.

[0050] Optimized:

[0051] For the oil grooves 32 around any perforation 31, the outer edges of the oil grooves 32 are connected to form a circle with a diameter of D and a radius of R; the inner edges of the oil grooves 32 are connected to form a circle with a diameter of d and a radius of r; the depth of the oil groove 32 is H and the arc is α. Assuming that the total oil storage capacity of the oil grooves 32 surrounding a perforation 31 is S and the total area is A, the following relationship exists:

[0052]

[0053] S=A×H×N.

[0054] That is, the friction area can be calculated to obtain relatively accurate data, and the pressure and torque borne by the unit area can be known. The total area of ​​the oil groove 32 can be more accurately distributed after calculation. The total oil storage capacity and the number of wear resistance can be calculated from the oil groove depth and other data, and then the most optimized design data can be designed to achieve the most ideal design life. Among them, the unit of D and R is mm, the unit of d and r is mm, the unit of H is mm, the unit of α is degree, and the unit of S is mm 3 , the unit of A is mm 2 The above formula is used to calculate the sector volume, which can be used to design all dimensions and can be measured, so the oil storage capacity can be accurately calculated.

[0055] There are at least three oil grooves 32 surrounding one through hole 31 .

[0056] The surface of the first friction plate 51 or the second friction plate 52 in contact with the corresponding oil groove 32 is flat, so that the lubricating oil is not easy to leak, the lubrication is more uniform, and the rotation is smoother.

[0057] Continue to optimize:

[0058] A positioning shaft 22 passes through the gear seat 20 from top to bottom, and the idler wheel 23 is sleeved on the positioning shaft 22. That is, the idler wheel 23 is easy to assemble.

[0059] The super wear-resistant double hinge structure also includes a cam plate 81, which is provided with two through holes 811, and a positioning groove 812 is provided on the right side of the cam plate 81 around the corresponding through holes 811. At the same time, the gear shaft 11 passes through the corresponding through holes 811, and the two transition shafts 14 are both sleeved with positioning cams 60, and the positioning cams 60 and the positioning grooves 812 match. That is, a convex block is provided on the side of the positioning cam 60, and the convex block is stuck in the corresponding positioning groove 812, which increases the compactness of the overall structure.

[0060] The cam plate 81 is provided with a stud 82 extending to the right by plugging or the like, and a receiving groove 821 is provided on the front side and the rear side of the stud 82, and the side of the limiting nut 70 is pressed on the right end surface of the stud 82. That is, the receiving groove 821 provides a space for accommodating and assembling the elastic washer 40, and the limiting nut 70 simultaneously fixes the stud 82 and the cam plate 81 in a stable position.

[0061] In summary, the super wear-resistant double hinge structure of the present invention forms a double hinge by setting evenly distributed oil grooves, and the oil grooves are matched with the plane, especially the relationship between parameters such as the amount of oil used is reasonably set. On the basis of forming a double hinge, it ensures that there is a relatively balanced friction force between the components, so that there will be no jumping phenomenon between the components, and the service life of the components is increased.

[0062] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A super wear-resistant double hinge structure, comprising two shaft plates (10), a gear seat (20), a friction plate (30), and a plurality of elastic washers (40); in, The right part of the shaft plate (10) is provided with a gear shaft (11) extending horizontally to the right. The gear shaft (11) includes a gear (12), a special-shaped shaft (13), a transition shaft (14), and a connecting screw (15) from left to right. The gear seat (20) is provided with two assembly holes (21) one in front and one in the back, both extending in the left-right direction; The friction plate (30) is provided with two through holes (31) corresponding to the two assembly holes (21) in pairs; at the same time, The two gear shafts (11) pass through the two assembly holes (21) from left to right respectively; Two gears (12) are located inside the gear seat (20), and an idler gear (23) is provided between the two gears (12); The two special-shaped shafts (13) are both located on the right side of the outer portion of the gear seat (20) and pass through the corresponding through hole (31) to the right. The two special-shaped shafts (13) are sleeved with a first friction plate (51) and a second friction plate (52) from left to right. The through hole (31) is located between the first friction plate (51) and the second friction plate (52). The first friction plate (51) and the second friction plate (52) are non-rotatable relative to the corresponding special-shaped shaft (13), and the special-shaped shaft (13) is rotatable relative to the corresponding through hole (31). The connecting screw rods (15) are all threadedly connected with limit nuts (70), and the transition shafts (14) are all sleeved with elastic washers (40), and the elastic washers (40) are located between the corresponding second friction plates (52) and the limit nuts (70); The invention is characterized in that: a plurality of oil grooves (32) are evenly distributed around the through hole (31) on the friction plate (30), the oil grooves (32) are filled with lubricating oil, and the extension direction of the oil grooves (32) passes through the center of the corresponding through hole (31) and is then distributed radially.

2. The ultra-friction-resistant double hinge structure according to claim 1, characterized in that: The outer edges of the oil groove (32) are connected to form a circle with a diameter of D and a radius of R, the inner edges of the oil groove (32) are connected to form a circle with a diameter of d and a radius of r, the depth of the oil groove (32) is H, the arc is α, the total oil storage capacity of the oil groove (32) around one through hole (31) is S, the total area is A, and S=A×H×N.

3. The ultra-friction-resistant double hinge structure according to claim 2, characterized in that: There are at least three oil grooves (32) surrounding one through hole (31).

4. The ultra-friction-resistant double hinge structure according to claim 2, characterized in that: The surface of the first friction plate (51) or the second friction plate (52) in contact with the corresponding oil groove (32) is planar.

5. The ultra-friction-resistant double hinge structure according to claim 1, characterized in that: A positioning shaft (22) passes through the gear seat (20) from top to bottom, and an idler wheel (23) is sleeved on the positioning shaft (22).

6. The ultra-friction-resistant double hinge structure according to claim 1, characterized in that: The super wear-resistant double hinge structure also includes a cam plate (81), the cam plate (81) is provided with two through holes (811), and a positioning groove (812) is provided on the right side surface of the cam plate (81) around the corresponding through holes (811), and at the same time, the gear shaft (11) passes through the corresponding through holes (811), and the two transition shafts (14) are both sleeved with positioning cams (60), and the positioning cams (60) and the positioning grooves (812) match.

7. The ultra-friction-resistant double hinge structure according to claim 6, characterized in that: The cam plate (81) is provided with a stud (82) extending to the right, the front side and the rear side of the stud (82) are provided with a receiving groove (821), and the side of the limiting nut (70) is pressed on the right end surface of the stud (82).

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