CN218494017U

CN218494017U - Cladding formula pivot and electronic equipment

Info

Publication number: CN218494017U
Application number: CN202222026660.XU
Authority: CN
Inventors: 杨德森; 臧永强; 霍国亮; 吴崚
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2023-02-17
Anticipated expiration: 2032-08-01

Abstract

The application provides a cladding formula pivot and electronic equipment, cladding formula pivot adopts interference fit (interference fit) mode to be connected's basis between the axle spindle portion of coupling spare and the axle sleeve portion of cup jointing spare on, through set up the external screw thread on the outer wall of axle spindle portion, set up the internal thread on the internal face of axle sleeve portion, threaded connection between messenger's axle spindle portion and the axle sleeve portion has increased the frictional area between axle spindle portion and the axle sleeve portion, thereby, the damping force that produces between axle spindle portion and the axle sleeve portion has been increased. Cladding formula pivot has the characteristic of small, big damping force, even under the limited installation space of the electronic equipment of ultra-thin thickness, cladding formula pivot also can provide sufficient damping force, enough confronts electronic equipment's unsettled partial dead weight, satisfies the stable stagnation of electronic equipment demand at the arbitrary position of angle range that opens and shuts, and positional stability to electronic equipment is good, can realize electronic equipment's whenever meet the stagnation function.

Description

Cladding formula pivot and electronic equipment

Technical Field

The present application relates to the field of electronic devices, and in particular, to a coated rotating shaft and an electronic device.

Background

Consumer electronic products with a flip (or folding) structure, such as notebook computers, folding mobile phones, netbooks, and the like, are connected with each part of the product, which needs to rotate relatively, through a rotating shaft, so as to realize the relative rotation between the parts. Especially for products which can stop at any position within the opening and closing angle range, the performance of the rotating shaft is an important factor for determining the quality of the products.

At present, the spindle structure in the market generally includes a tandem type axial friction spindle and a cladding type spindle, wherein the cladding type spindle mainly depends on the interference between the spindle holes to generate the torque. The coated rotating shaft is generally composed of a shaft connecting piece and a sleeve connecting piece axially sleeved with the shaft connecting piece, the shaft connecting piece is provided with a shaft rod part, the sleeve connecting piece is provided with a sleeve or a coating part which can be sleeved outside the shaft rod part, and the shaft connecting piece and the sleeve connecting piece are respectively connected with two adjacent parts of a product. Between the shaft connecting piece and the sleeve connecting piece, the damping force generated by mutual friction of the shaft rod parts in the sleeve or the cladding part is utilized to achieve the function of stagnation and positioning between adjacent parts of the product.

However, the conventional coated rotating shaft provides a constant damping force based on the friction area between the hole shafts, and the disadvantage of insufficient damping force can occur as the space requirement of the product is more and more limited.

SUMMERY OF THE UTILITY MODEL

The application provides a cladding formula pivot and electronic equipment, and cladding formula pivot can provide sufficient damping force, and simple structure can strengthen the stability to electronic equipment location.

On one hand, the application provides a coated rotating shaft which comprises a shaft connecting piece and a socket joint piece;

the shaft connecting piece comprises a shaft rod part and a first connecting part connected to one end of the shaft rod part, the sleeve connecting piece comprises a shaft sleeve part and a second connecting part extending out of the outer wall surface of the shaft sleeve part, and the shaft sleeve part is sleeved outside the shaft rod part in an interference fit mode;

wherein, the outer wall of axostylus axostyle portion is equipped with the external screw thread, and the internal wall of axle sleeve portion is equipped with the internal thread, and internal thread and external screw thread phase-match.

The application provides a cladding formula pivot, including cup jointing each other and pivoted axle coupling spare relatively and cup jointing the piece, on the basis that adopts interference fit (interference fit) mode to connect between the axle sleeve portion of axle coupling spare and the axle sleeve portion of cup jointing the piece, through set up the external screw thread on the outer wall at axle sleeve portion, set up the internal thread on the internal face of axle sleeve portion, threaded connection between messenger axle sleeve portion and the axle sleeve portion, the friction area between axle sleeve portion and the axle sleeve portion has been increased, thereby, the damping force that produces between axle sleeve portion and the axle sleeve portion has been increased. The cladding formula pivot has the characteristic of little volume, big damping force, even under the limited installation space of the electronic equipment of ultra-thinization, the cladding formula pivot also can provide sufficient damping force, enough confronts electronic equipment's unsettled part's dead weight, satisfies the stable stagnation of electronic equipment demand in the arbitrary position of angle range that opens and shuts, and is good to electronic equipment's positional stability, can realize electronic equipment's the function of meeting the stagnation everywhere.

In one possible embodiment, the external thread is a continuous thread extending over a complete section of the outer wall surface of the shaft part, and the axial length of the external thread is greater than or equal to the axial length of the sleeve part.

Through making the external screw thread on the outer wall surface of the shaft part, form the whole section screw thread that the continuity extends in the axial of shaft part, in cladding formula pivot rotation in-process, can make the shaft part of shaft coupling spare and cup joint the shaft sleeve portion of piece between have longer screw thread overlap region, especially make the axial length that the external screw thread of shaft part extends be greater than or equal to the axial length of shaft sleeve portion, along with in the screw in shaft sleeve portion of shaft part, the area increase of the screw contact zone between shaft part and the shaft sleeve portion or remain at the biggest area all the time, can guarantee to have enough big damping force all the time between shaft part and the shaft sleeve portion, guarantee that electronic equipment all stable and reliable when the optional position stagnates.

In a possible embodiment, an end of the external thread extending towards the first connection portion has a spacing from the first connection portion.

Have the interval through making the one end of being connected with first connecting portion of axostylus axostyle portion and the corresponding end of external screw thread between, on the axial length that makes axostylus axostyle portion axial length satisfy external screw thread extension on it is equal to or greater than the axial length of axle sleeve portion's basis, reserve out the region that one section did not set up the external screw thread on axostylus axostyle portion, even the deviation appears in the processing position of the external screw thread on the axostylus axostyle portion, also can guarantee that the axial extension length of external screw thread satisfies the demand. And, under the condition that electronic equipment can 360 upsets, damping force when electronic equipment lock can be reduced, the phenomenon that electronic equipment lock (folding) is difficult is avoided appearing.

In one possible embodiment, all regions of the sleeve part in the axial direction are provided with an internal thread.

All areas on the axial through making axle sleeve portion all are provided with the internal thread, along with the screw in of axle shaft portion, damping force between axle shaft portion and the axle sleeve portion increases to, when the complete screw in axle sleeve portion of axle shaft portion, the length in threaded connection region between axle shaft portion and the axle sleeve portion is the axial length of axle sleeve portion, and it is the biggest to realize the damping force between the two, and cladding formula pivot is realized that electronic equipment meets stagnant reliability height wantonly.

In one possible embodiment, a partial region of the sleeve part in the axial direction is provided with an internal thread.

Under the condition that the space for installing the coating type rotating shaft on the electronic equipment is large, the internal thread is arranged in the axial part area of the shaft sleeve part, the circumferential surfaces of the shaft rod part and the shaft sleeve part can provide a large friction area, the threaded connection structure between the shaft rod part and the shaft sleeve part is additionally arranged, and the damping force generated by the coating type rotating shaft is enough to stably realize the random stagnation function of the electronic equipment.

In one possible embodiment, the internal thread is a continuous, continuous thread extending over the entire length of the inner wall of the sleeve part.

In one possible embodiment, the internal thread is a multi-step thread extending discontinuously on the inner wall of the sleeve portion.

In a possible embodiment, the sleeve portion is provided with an expansion joint extending along an axial direction of the sleeve portion to both ends of the sleeve portion.

Through set up along its axial extension and link up the expansion joint at both ends in axle sleeve portion, the expansion joint provides the flexible space of elasticity for axle sleeve portion, can ensure that the axle shaft portion of axle connecting piece inserts axle sleeve portion smoothly in, simultaneously, relies on the elastic force effect of axle sleeve portion self, can make between axle sleeve portion and the axle shaft portion closely cooperate, guarantees to have sufficient damping force between the two.

In one possible embodiment, the protruding direction of the second connecting portion is a radial direction of the boss portion, and the second connecting portion is elongated in an axial direction of the boss portion.

In a possible embodiment, the second connection part and the expansion joint are arranged opposite to each other.

Through making second connecting portion and expansion joint relative setting in the circumference of axle sleeve portion, the distance between second connecting portion and the expansion joint is far away, and the expansion joint is flexible to make the stress that axle sleeve portion deformation produced less to the influence at second connecting portion place position, can guarantee to cup joint the stability and the reliability of piece.

In a possible embodiment, the first connecting portion comprises a fixing portion and a sliding portion, the fixing portion is connected to the shaft portion, and a side of the sliding portion facing the fixing portion is provided with a sliding groove in which the fixing portion slides.

Through setting up first connecting portion to include fixed part and sliding part, connect the fixed part on the axostylus axostyle portion, sliding part fixed connection is on the structure, and the fixed part stretches into in the spout of sliding part and moves along the spout for but relative movement between fixed part and the sliding part, because the rotation of cladding formula pivot produces the displacement with the structure that the sliding part is connected with the compensation.

In a possible embodiment, the direction of extension of the sliding groove is parallel to the axial direction of the shaft part.

In a possible embodiment, the extending direction of the fixing portion is a radial direction of the shaft portion, and one end of the fixing portion is connected to the shaft portion and the other end of the fixing portion slides in the sliding groove along the extending direction of the fixing portion.

In a possible embodiment, the fixing portion includes a main plate portion and a guide portion, the main plate portion extends to a side of the shaft portion in a radial direction of the shaft portion, the guide portion is perpendicularly connected to an end of the main plate portion away from an axis of the shaft portion, and the guide portion extends into the chute.

In another aspect, the present application provides an electronic device including at least two foldable portions capable of rotating relative to each other and the cladding hinge as described above, where the cladding hinge is connected between adjacent foldable portions.

The application provides an electronic equipment, including two at least pivoted folding portions relatively, rotate through cladding formula pivot between the adjacent folding portion and connect, cladding formula pivot is including cup jointing each other and pivoted axle connecting piece relatively and cup jointing the piece, adopt on the basis that interference fit (interference fit) mode is connected between the axle spindle portion of axle connecting piece and the axle sleeve portion of cup jointing the piece, through setting up the external screw thread on the outer wall at axle spindle portion, set up the internal thread on the internal face of axle sleeve portion, threaded connection between messenger axle spindle portion and the axle sleeve portion, the frictional area between axle spindle portion and the axle sleeve portion has been increased, thereby, the damping force that produces between axle spindle portion and the axle sleeve portion has been increased. The cladding formula pivot has the characteristic of little volume, big damping force, even under the limited installation space of the electronic equipment of ultra-thinization, the cladding formula pivot also can provide sufficient damping force, enough confronts electronic equipment's unsettled part's dead weight, satisfies the stable stagnation of electronic equipment demand in the arbitrary position of angle range that opens and shuts, and is good to electronic equipment's positional stability, can realize electronic equipment's the function of meeting the stagnation everywhere.

In one possible embodiment, the electronic device includes a display portion and a main body portion, and the cover hinge is connected between the display portion and the main body portion.

The coating type rotating shaft drives the display part and the adjacent side of the main body part to rotate relatively by connecting the coating type rotating shaft between the display part and the main body part, so that the other side of the display part and the other side of the main body part are far away from or close to each other, and the electronic equipment is opened or closed. Wherein, rely on cladding formula pivot self damping force can make the display part stop the arbitrary angle in the angle range that opens and shuts for the main part, because cladding formula pivot on the axle connecting piece with cup joint a clearance fit's basis, increased threaded connection structure between each cup joint of axle connecting piece, increased frictional area between the two, improved the damping force of cladding formula pivot, cladding formula pivot has the characteristics of small volume, big damping force, can provide stable whenever meeting stagnation effect for electronic equipment.

In one possible embodiment, the direction of fastening the cover-type rotation shaft is the same as the direction of rotation when the display portion is away from the main body portion.

The rotation direction when the main part was kept away from to the display part is electronic equipment's the direction of opening, keep unanimous through the direction of screwing that makes cladding formula pivot and electronic equipment's the direction of screwing, at the in-process of opening electronic equipment, the position in the axle sleeve portion of the axle shaft part screw in cover joint spare of the axle joint spare of cladding formula pivot increases, the external screw thread of axle shaft part increases with the internal thread overlapping region of axle sleeve portion, locking force between axle shaft part and the axle sleeve portion is bigger and bigger, the damping force that cladding formula pivot produced is bigger and bigger, stability to the display part location is stronger, electronic equipment's the reliability of following chance stagnant is higher, the effect is better.

In one possible embodiment, the first connecting portion of the coupling member of the covered spindle is connected to the display portion, and the second connecting portion of the coupling member of the covered spindle is connected to the main body portion.

Drawings

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;

fig. 2 is a structural diagram of a view angle of a coated rotating shaft according to an embodiment of the present disclosure;

fig. 3 is a structural diagram of another view angle of the coated rotating shaft according to the embodiment of the present application;

FIG. 4 is an exploded view of a coated spindle according to an embodiment of the present disclosure;

FIG. 5 isbase:Sub>A cross-sectional view taken at A-A of FIG. 3;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

FIG. 7 is a schematic structural diagram of a shaft coupling provided in an embodiment of the present application;

FIG. 8 is an exploded view of a coupling member provided in accordance with an embodiment of the present application;

fig. 9 is a schematic structural diagram of a socket provided in an embodiment of the present application.

Description of reference numerals:

1-an electronic device; 10-notebook computer;

100-cladding type rotating shaft;

110-a shaft coupling; 120-socket;

111-a shaft portion; 112-a first connection; 121-a boss portion; 122-a second connection;

1111-external thread; 1121-a fixed part; 1122-a sliding portion; 1211-internal thread; 1212-an expansion joint; 1221-mounting holes;

1121 a-main plate portion; 1121 b-a guide; 1122 a-chute; 1122 b-positioning holes;

200-a fold;

210-a display section; 220-a main body portion;

211-upper shell; 212-a display screen; 221-a lower shell; 222-key press; 223-power key;

2211-operation surface.

Detailed Description

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.

Electronic devices with flip-top or foldable structure, such as notebook computers, netbooks, foldable mobile phones, flip-top mobile phones, and flip-top Personal Digital Assistants (PDAs), are connected via a hinge. Besides, the rotating shaft applied to such products needs to have a basic function of enabling the relatively rotating part of the product to be repeatedly opened and closed, and for products such as notebook computers and netbooks, which can adjust the opening and closing angle according to actual requirements, the rotating shaft needs to be capable of enabling the product to stably stop at any required angle position within the whole opening and closing angle range of the product.

In the conventional rotating shaft, one type is a tandem type axial friction rotating shaft, which mainly comprises a shaft member connected with a plurality of friction members in series, and the mutual pressing effect of the friction members is utilized to provide relative rotation friction resistance between the shaft member and a rotating member connected in series on the shaft member, so that the effect that the rotating member is stopped at any position relative to the shaft member is generated on the basis of the relative rotation of the rotating member and the shaft member.

However, after the tandem type axial friction rotating shaft is used repeatedly for a period of time, the friction pieces are gradually worn due to mutual friction of the friction pieces, so that the tight pressing effect between the friction pieces is loosened, and the effect that the rotating piece can stop relative to the shaft piece is gradually lost. Also, excessive slack can lead to abnormal noise associated with loosening during the turning operation.

The other type is a coated spindle, which is associated with a conventional sleeved spindle, i.e. a so-called radial friction spindle. The rotating shaft is generally composed of a sleeve joint part and a shaft joint part axially sleeved with the sleeve joint part, wherein one end of the sleeve joint part is provided with a coating part, the shaft joint part is provided with a shaft rod capable of receiving the coating part in a surrounding manner, and the coating part is sleeved outside the shaft rod in an interference fit manner. The friction resistance between the shaft lever and the cladding part is utilized to generate torque, so that the random stagnation function is achieved.

However, in all of the conventional coated rotary shafts, the frictional area between the hole shafts is constant and the magnitude of the generated damping force is constant when the fitting length between the hole shafts (the fitting length between the coating portion and the shaft lever) is constant. Under the trend of light and thin development of electronic products, the volume of the coated rotating shaft is smaller and smaller under the limited installation space, and the damping force generated by the rotating shaft is not enough to stably stop the product at any position, so that the effect of stopping at any time is difficult to achieve.

In view of the above, an embodiment of the present application provides a coated rotating shaft and an electronic device, where the coated rotating shaft is based on an interference fit between a shaft connecting piece and a socket connecting piece, a thread fit structure is added between the shaft connecting piece and the socket connecting piece, and through thread fit, a friction area between the shaft connecting piece and the socket connecting piece is increased, a damping force between the shaft connecting piece and the socket connecting piece is increased, so that a large damping force effect of the coated rotating shaft in a limited space is achieved, and the generated damping force can make the electronic device stably stagnate at any position, thereby satisfying the demand for the electronic device to be stagnated in any chance.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application. Referring to fig. 1, the electronic device 1 includes foldable portions 200 that can rotate relative to each other, adjacent foldable portions 200 are connected to each other through a wrapping shaft (not shown), the folding portions 200 rotate relative to each other through the wrapping shaft, and the wrapping shaft can control the adjacent foldable portions 200 to stay at any position within an opening/closing angle range, so as to achieve an occasional stall function of the electronic device 1.

Specifically, in fig. 1, the electronic device 1 is taken as an example of the notebook computer 10, and the notebook computer 10 may include two parts, namely a display part 210 and a main body part 220. The display part 210 may include an upper case 211 and a display screen 212, the display screen 212 being mounted to the upper case 211, a display area of the display screen 212 being exposed outside the upper case 211, and the display screen 212 being opposite to the main body part 220; the main body part 220 may include a lower case 221 and components mounted on the lower case 221, for example, the lower case 221 is mounted with components such as a main board (not shown in the figure), a battery (not shown in the figure), and a fan (not shown in the figure), a side of the lower case 221 facing the display part 210 is an operation surface 2211, the operation surface 2211 has a keyboard region, a plurality of keys 222 are arranged in the keyboard region, and the operation surface 2211 may further have components such as a power key 223 and an indicator light (not shown in the figure).

The cladding type rotating shaft is connected to one side, close to the display part 210 and the main body part 220, of the display part 210 and the main body part 220, the side, close to the display part 210 and the main body part 220, of the display part is a rotating connection side of the display part and the main body part 220, the other side opposite to the rotating connection side is an opening and closing side of the display part and the main body part 220, the rotating connection sides of the display part 210 and the main body part 220 are driven to rotate relatively through the cladding type rotating shaft, the opening and closing side of the display part 210 and the opening and closing side of the main body part 220 are far away from or close to each other, and the notebook computer 10 is opened or closed.

For example, taking the main body 220 of the notebook computer 10 as an example of being placed on a support table such as a desktop, the main body 220 is supported on the desktop and fixed, and the user can hold the display portion 210 by hand and apply a force to the display portion 210, which is opposite to the main body 220, so that the opening and closing side of the display portion 210 moves away from the opening and closing side of the main body 220 to open the notebook computer 10; alternatively, when the notebook computer 10 is in the opened state, a force is applied to the display unit 210 toward the main body 220, so that the opening/closing side of the display unit 210 moves toward the opening/closing side of the main body 220, and the notebook computer 10 is closed.

In the process of relative rotation between the display part 210 and the main body part 220, for example, in the process of rotation of the display part 210 by a user, the cladding-type rotating shaft drives the display part 210 to rotate relative to the main body part 220 under the external force applied by the user, and once the external force applied by the user disappears, the display part 210 can be stopped at the current position by means of the damping force generated by the cladding-type rotating shaft, so that the current angular posture between the display part 210 and the main body part 220 is maintained. Therefore, the user can stop applying the external acting force according to the actual requirement when the display part 210 rotates to a proper angle, and the display part 210 keeps the current position by means of the cladding type rotating shaft, so that the random stagnation effect is achieved.

Taking the opening and closing angle range of the notebook computer 10 as 0 to 150 degrees, when the included angle between the display part 210 and the main body part 220 is 0 degree, the display part 210 is buckled on the main body part 220, and the display screen 212 is completely shielded by the main body part 220; when the included angle between the display part 210 and the main body part 220 is 150 °, the rotation limit of the display part 210 is reached, and even if an external force is applied, the display part 210 cannot continue to rotate in a direction away from the main body part 220. The rotation limit of the display unit 210 may be determined by a limit structure on the display unit 210 and the main body 220 or a limit structure designed on the cover-type rotation shaft itself, which is not limited in this embodiment. Within the range of the opening and closing angle of the notebook computer 10, the display portion 210 can be stopped at any position by the damping force generated by the cover-type rotating shaft itself, for example, the display portion 210 is stopped at a position where the included angle between the display portion 210 and the main body portion 220 is 30 °, 60 °, 90 °, 120 °, and the like.

In addition, in order to ensure the stability of the rotational connection between the display part 210 and the main body part 220, two or more cover type rotating shafts may be connected between the display part 210 and the main body part 220, and the cover type rotating shafts are spaced apart from each other along the extending direction of the rotational connection side between the display part 210 and the main body part 220. For the notebook computer 10 with smaller volume, two cladding type rotating shafts can be connected between the display part 210 and the main body part 220; for the notebook computer 10 with a larger volume, three, four or more wrapping type rotating shafts can be connected between the display part 210 and the main body part 220.

While the electronic device 1 with the foldable part 200 capable of rotating relatively is taken as the notebook computer 10 for example, it is understood that in other embodiments, the electronic device 1 with the foldable part 200 capable of rotating relatively may also be other electronic devices 1, and a foldable mobile phone is taken as an example, and for a common single-folding mobile phone, the mobile phone includes two foldable parts 200 capable of rotating relatively, and the two foldable parts 200 are connected by a wrapping rotating shaft; for a double-folding mobile phone, the mobile phone may include three folding portions 200 adjacent in sequence, and each two adjacent folding portions 200 may be connected through a wrapping type rotating shaft; for a three-fold mobile phone, even a mobile phone with more than four folds, the mobile phone may include a plurality of folding portions 200, and every two adjacent folding portions 200 are connected by a wrapping type rotating shaft, which is not described in detail.

In practical applications, in addition to the electronic device 1, the cover-type rotating shaft may also be applied to other scenes that need a random stagnation function, for example, the cover-type rotating shaft may be applied to a sliding door or some accessories, which is not limited in this embodiment. The following description will be made in detail by taking the application of the wrapping type hinge to the notebook computer 10 as an example.

Fig. 2 is a structural diagram of a view angle of a coated rotating shaft according to an embodiment of the present disclosure; fig. 3 is a structural diagram of another view angle of the coated rotating shaft according to the embodiment of the present application; FIG. 4 is an exploded view of a coated spindle according to an embodiment of the present disclosure; FIG. 5 isbase:Sub>A cross-sectional view taken at A-A of FIG. 3; fig. 6 is a partially enlarged view of a point a in fig. 5.

Referring to fig. 2 and fig. 3, in the embodiment, the clad rotating shaft 100 includes a shaft connector 110 and a socket connector 120, the shaft connector 110 and the socket connector 120 are mutually sleeved, and the shaft connector 110 and the socket connector 120 can rotate relatively, and the shaft connector 110 and the socket connector 120 are respectively used for connecting two structural members that need to rotate relatively, so as to realize the relative rotation of the two structural members. Taking the notebook computer 10 as an example, one of the shaft connector 110 and the socket connector 120 may be connected to the display unit 210, and the other may be connected to the main body unit 220, so that the main body unit 220 and the display unit 210 rotate relative to each other through the relative rotation between the shaft connector 110 and the socket connector 120.

Specifically, as shown in fig. 4, the shaft connecting member 110 includes a shaft portion 111 and a first connecting portion 112, the socket 120 includes a shaft sleeve portion 121 and a second connecting portion 122, and as shown in fig. 2 or fig. 3, the shaft portion 111 of the shaft connecting member 110 and the shaft sleeve portion 121 of the socket 120 are matched in shape and size, when the shaft connecting member 110 is connected to the socket 120, the shaft portion 111 of the shaft connecting member 110 extends into the shaft sleeve portion 121 of the socket 120, and the shaft portion 111 of the shaft connecting member 110 can rotate in the shaft sleeve portion 121 of the socket 120, so as to achieve the rotational connection between the shaft connecting member 110 and the socket 120. The first connecting portion 112 of the shaft member 110 is connected to one end of the shaft portion 111, and taking the side of the shaft portion 111 for connecting with the sleeve portion 121 of the sleeve member 120 as an example, the first connecting portion 112 may be connected to one end of the shaft portion 111 outside the sleeve portion 121, and the first connecting portion 112 is used for connecting with a structural member, for example, the first connecting portion 112 is used for connecting with the display portion 210 of the notebook computer 10. The second connecting portion 122 of the socket 120 is connected to the outer wall of the socket portion 121, and the second connecting portion 122 is used for connecting with another structural member, for example, the second connecting portion 122 is used for connecting with the main body 220 of the notebook computer 10. For example, the second connecting portion 122 may be integrally formed with the boss portion 121.

It can be understood that, in the assembled covered rotating shaft 100, the shaft portion 111 of the shaft connecting member 110 and the shaft sleeve portion 121 of the socket member 120 are coaxially arranged, and the shaft portion 111 extends into the shaft sleeve portion 121 along the axial direction of the shaft sleeve portion 121, so as to realize the connection between the shaft connecting member 110 and the socket member 120. In practical applications, the installation direction of the clad spindle 100 may be designed according to the application scenario of the clad spindle 100, and taking the application of the clad spindle 100 to the notebook computer 10 as an example, the clad spindle 100 is connected between the display portion 210 and the main body portion 220 of the notebook computer 10, and the axial direction of the clad spindle 100 (the axial direction of the shaft portion 111 of the shaft connecting member 110/the axial direction of the sleeve portion 121 of the sleeve member 120) may extend along the side of the adjacent side of the display portion 210 and the main body portion 220, so that the rotation direction between the shaft connecting member 110 and the sleeve member 120 of the clad spindle 100 is perpendicular to the side, so as to drive the display portion 210 to open and close relative to the main body portion 220.

The shaft portion 111 of the shaft connecting member 110 and the shaft sleeve portion 121 of the sleeve 120 are connected in an interference fit (interference fit) manner, that is, the outer diameter of the shaft portion 111 may be slightly larger than the inner diameter of the shaft sleeve portion 121, and by applying a certain acting force, the shaft portion 111 of the shaft connecting member 110 is pushed into the shaft sleeve portion 121 of the sleeve 120, the shaft portion 111 and the shaft sleeve portion 121 are tightly attached to each other, and a large damping force (friction force) is generated between the shaft portion 111 and the shaft sleeve portion 121. Therefore, a relatively large external force is required to rotate the shaft connecting member 110 and the socket member 120 relatively, and when the external force disappears, the damping force between the shaft connecting member 110 and the socket member 120 overcomes the gravity of the structural members connected thereto, so that the shaft connecting member 110 and the socket member 120 maintain the current positions and do not rotate, and accordingly, the structural members are stopped at the current position angle, i.e., the random stop function.

The magnitude of the damping force between the shaft portion 111 of the shaft joint 110 and the sleeve portion 121 of the sleeve 120 is determined by the contact area between the shaft portion 111 and the sleeve portion 121, and when the length of the sleeve portion 121 is constant, that is, when the fitting length between the shaft portion 111 and the sleeve portion 121 is constant, the contact area between the shaft portion 111 and the sleeve portion 121 is constant, and the magnitude of the damping force generated by the friction action between the shaft portion 111 and the sleeve portion 121 is constant. With the thinning of the consumer electronic products such as the notebook computer 10, the folding mobile phone, the netbook, etc., the volume of the electronic device 1 is smaller and thinner, and accordingly, the installation space reserved for the coated rotating shaft 100 is smaller and smaller, and the volume of the coated rotating shaft 100 is also smaller and smaller, so that the contact area between the shaft part 111 of the shaft connecting part 110 and the shaft sleeve part 121 of the socket connecting part 120 is smaller and smaller, and the damping force generated between the shaft part 111 and the shaft sleeve part 121 is smaller and smaller, gradually, the damping force of the coated rotating shaft 100 is not enough to stably stagnate the electronic device 1 at any position between the opening and closing angle ranges, the positioning stability of the coated rotating shaft 100 on the electronic device 1 is poor, and even the coated rotating shaft 100 cannot realize the random stagnation function of the electronic device 1.

In view of the above, referring to fig. 4 and 5, in this embodiment, on the basis of the interference fit between the shaft portion 111 of the shaft connecting member 110 and the shaft sleeve portion 121 of the sleeve connecting member 120, the shaft portion 111 and the shaft sleeve portion 121 are connected by a thread structure, wherein an outer wall surface of the shaft portion 111 is provided with an external thread 1111, an inner wall surface of the shaft sleeve portion 121 is provided with an internal thread 1211, the external thread 1111 of the shaft portion 111 matches with the internal thread 1211 of the shaft sleeve portion 121, and the shaft portion 111 is in threaded connection with the shaft sleeve portion 121.

The shaft portion 111 and the shaft sleeve portion 121 are connected through a screw thread, which is equivalent to that a continuous protrusion structure extending spirally is processed on the outer wall surface of the shaft portion 111 and the inner wall surface of the shaft sleeve portion 121, and along the axial direction of the shaft portion 111 (the shaft sleeve portion 121), a plurality of circles of protrusion structures are correspondingly arranged on the outer wall surface of the shaft portion 111 (the inner wall surface of the shaft sleeve portion 121), and a recessed structure is formed between adjacent protrusion structures. Thus, the thread structure makes the outer wall surface (the inner wall surface of the boss portion 121) of the shaft portion 111 form an uneven surface, which increases the contact area (friction area) between the shaft portion 111 and the boss portion 121, thereby increasing the damping force generated between the shaft portion 111 and the boss portion 121, the coated rotary shaft 100 has the characteristics of small volume and large damping force, even in the limited installation space of the ultra-thin electronic device 1, the coated rotary shaft 100 can provide enough damping force, the damping force generated by the coated rotary shaft 100 is enough to counter the self weight of the structural member (for example, the display portion 210 of the notebook computer 10), the requirement that the electronic device 1 stably stagnates at any position within the opening and closing angle range is met, the positioning stability of the electronic device 1 is good, and the random stagnation function of the electronic device 1 can be realized.

In addition, in the screw coupling structure between the shaft portion 111 of the shaft coupling member 110 and the sleeve portion 121 of the socket member 120, the damping force between the shaft portion 111 and the sleeve portion 121 is increased by providing the screw coupling structure, compared to the increase of the friction force by the roughness, the male screw 1111 of the shaft portion 111 and the female screw 1211 of the sleeve portion 121 are fitted to each other, the male screw 1111 of the shaft portion 111 is fitted into the female screw 1211 of the sleeve portion 121, and similarly, the female screw 1211 of the sleeve portion 121 is fitted into the female screw 1111 of the shaft portion 111. The convex external thread 1111 on the outer wall surface of the shaft part 111 and the convex internal thread 1211 on the inner wall surface of the shaft sleeve part 121 are mutually interfered, and the side wall surface of the external thread 1111 of the shaft part 111 and the side wall surface of the internal thread 1211 of the shaft sleeve part 121 are mutually abutted, so that the damping force between the shaft part 111 and the shaft sleeve part 121 is larger, the shaft part 111 and the shaft sleeve part 121 have interlocking characteristics, the connection between the shaft part 111 and the shaft sleeve part 121 is firmer, the stability is stronger, and in the long-term service process of the coating type rotating shaft 100, even if the shaft connecting part 110 and the sleeve connecting part 120 repeatedly rotate relatively, the shaft part 111 and the shaft sleeve part 121 can be ensured not to be separated.

In addition, in practical applications, a user often stops the electronic device 1 at a desired position during the process of opening the electronic device 1, so as to operate the electronic device 1 comfortably. For example, in the process of opening the notebook computer 10, the included angle of the display part 210 relative to the main body part 220 is gradually increased, and when the display part 210 rotates to a proper angle, the application of the external force is stopped, so that the display part 210 is stopped at a proper angle position. In the process of closing the electronic device 1, the electronic device 1 is often rotated to the folded state by continuous operation, and the operation of the electronic device 1 is terminated. For example, in the process of closing the notebook computer 10, the display part 210 is continuously rotated until the display part 210 is fastened to the main body part 220.

In this embodiment, the screwing direction of the coated rotating shaft 100 may be consistent with the opening direction of the electronic device 1, and the electronic device 1 is taken as the notebook computer 10 as an example, that is, the screwing direction of the coated rotating shaft 100 is the same as the rotating direction of the display part 210 when being away from the main body part 220, so that in the process of opening the display part 210, under the guiding action of the screwing direction of the thread structure between the shaft part 111 of the shaft connector 110 and the sleeve part 121 of the socket connector 120, equivalent to the shaft part 111 extending into the sleeve part 121 more and more, the overlapping area of the external thread 1111 of the shaft part 111 and the internal thread 1211 of the sleeve part 121 is increased, the area of the thread contact area between the shaft part 111 and the sleeve part 121 is larger, the locking force between the shaft part 111 and the sleeve part 121 is larger and larger, the damping force generated by the coated rotating shaft 100 is larger and larger, the positioning stability of the coated rotating shaft 100 to the display part 210 is stronger, and the reliability of the occurrence of the electronic device 1 is higher, and the effect is better.

For example, taking the rotation direction (opening direction) of the display portion 210 of the notebook computer 10 away from the main body portion 220 as a clockwise direction as an example, the screwing direction of the cover-type rotating shaft 100 may be a clockwise direction, in this case, the external thread 1111 on the shaft portion 111 of the shaft connector 110 is a right-handed thread, that is, the shaft portion 111 rotates clockwise to screw into the shaft sleeve portion 121, and the shaft portion 111 rotates counterclockwise to screw out of the shaft sleeve portion 121. Taking the rotation direction of the display portion 210 of the notebook computer 10 away from the main body portion 220 as an example of a counterclockwise direction, the screwing direction of the cladding rotation shaft 100 may be a counterclockwise direction, and at this time, the external thread 1111 on the shaft portion 111 of the shaft connector 110 is a left-handed thread, that is, the shaft portion 111 rotates in the counterclockwise direction and is screwed into the shaft sleeve portion 121, and the shaft portion 111 rotates in the clockwise direction and is screwed out of the shaft sleeve portion 121.

With continued reference to fig. 4 and 5, in some embodiments, the external thread 1111 on the outer wall surface of the shaft portion 111 of the shaft connecting member 110 forms a continuous and extended whole-segment thread in the axial direction, so that, during the rotation of the coated rotating shaft 100, a longer thread overlapping region can be provided between the shaft portion 111 of the shaft connecting member 110 and the sleeve portion 121 of the sleeve member 120, and whether the shaft portion 111 is screwed into or screwed out of the sleeve portion 121, a larger frictional resistance can be generated between the shaft portion 111 and the sleeve portion 121, and a sufficient damping force can be provided to ensure the reliability and stability of the electronic device 1 in encountering stagnation.

Further, in the axial direction of the shaft portion 111 of the shaft fitting 110, the axial length of the male screw 1111 on the outer wall surface of the shaft portion 111 is longer than or equal to the axial length of the female screw 1211 on the inner wall surface of the boss portion 121. In this way, in the process of relative rotation between the shaft portion 111 of the shaft coupling member 110 and the shaft sleeve portion 121 of the sleeve coupling member 120, the overlapping region of the shaft sleeve portion 121 and the shaft portion 111 is always in the external thread 1111 region of the shaft portion 111, so as to ensure that sufficient damping force is always provided between the shaft portion 111 and the shaft sleeve portion 121, and the electronic device 1 is stable and reliable when being stopped at any position.

Taking the screwing direction of the coated rotating shaft 100 and the opening direction of the electronic device 1 as an example, when the axial length of the external thread 1111 on the outer wall surface of the shaft portion 111 is equal to the axial length of the shaft sleeve portion 121, when the electronic device 1 is in the fastening state, the shaft portion 111 of the shaft connecting member 110 may be in a state of not completely extending into the shaft sleeve portion 121 of the socket member 120, a partial region of the external thread 1111 on the shaft portion 111 is exposed outside the shaft sleeve portion 121, the shaft portion 111 is gradually screwed into the shaft sleeve portion 121 along with the gradual increase of the opening angle of the electronic device 1, the region of the external thread 1111 screwed into the shaft sleeve portion 121 on the shaft portion 111 is gradually increased, and the damping force between the shaft portion 111 and the shaft sleeve portion 121 is gradually increased. With such an arrangement, the cladding-type rotating shaft 100 has high reliability, so as to satisfy the random stagnation requirement of the electronic device 1.

When the axial length of the external thread 1111 on the outer wall surface of the shaft portion 111 is greater than the axial length of the shaft sleeve portion 121, when the electronic device 1 is in the fastened state, if the shaft portion 111 of the shaft connecting member 110 is in the state of not completely extending into the shaft sleeve portion 121 of the sleeve connecting member 120, the shaft portion 111 is gradually screwed into the shaft sleeve portion 121 as the opening angle of the electronic device 1 is gradually increased, the area of the thread contact area between the shaft portion 111 and the shaft sleeve portion 121 is gradually increased, and the damping force therebetween is increased. When the electronic device 1 is in the fastened state, if the shaft portion 111 of the shaft connecting member 110 is in a state of completely extending into the shaft sleeve portion 121 of the socket member 120 and a partial region of the external thread 1111 is still exposed outside the shaft sleeve portion 121, the shaft sleeve portion 121 axially moves in the thread region on the shaft portion 111 as the opening angle of the electronic device 1 gradually increases, the area of the thread contact region between the shaft sleeve portion 121 and the shaft portion 111 is always kept the largest, and the maximum damping force state is always kept between the shaft sleeve portion 121 and the shaft portion 111. With such an arrangement, the cladding-type rotating shaft 100 has high reliability, so as to meet the random stagnation requirement of the electronic device 1.

In addition, an end portion of the external thread 1111 on the outer wall of the shaft portion 111 of the shaft connecting member 110, specifically, an end portion of the external thread 1111 extending to an end of the shaft portion 111 connected to the first connecting portion 112, has a distance with the first connecting portion 112, that is, a section of the outer wall of the shaft portion 111 near the first connecting portion 112 is not provided with the external thread 1111. Thus, it is indicated that the axial length of the shaft part 111 is greater than the axial length of the shaft sleeve part 121, and the external thread 1111 with an axial extension length greater than or equal to the axial length of the shaft sleeve part 121 is sufficiently arranged in the length range of the shaft part 111, so as to ensure that the axial length of the external thread 1111 on the shaft part 111 is greater than or equal to the length of the shaft sleeve part 121.

In addition, when the electronic device 1 can be turned 360 °, for example, the electronic device 1 is a folding mobile phone having both a fold-in mode and a fold-out mode, and at this time, when the mobile phone is in an unfolded state, the area of the screw contact region between the shaft portion 111 and the shaft sleeve portion 121 can be kept at the maximum, so that the area of the screw contact region between the shaft portion 111 and the shaft sleeve portion 121 is gradually reduced regardless of whether the mobile phone is folded in or folded out, and the shaft sleeve portion 121 moves toward the end away from the first connection portion 112 or moves toward the first connection portion 112, and the damping force between the shaft sleeve portion 121 and the shaft portion 111 is appropriately reduced, thereby avoiding the phenomenon that the mobile phone is difficult to fold.

On the basis that the axial length of the external thread 1111 on the shaft portion 111 is longer than or equal to the axial length of the sleeve portion 121, as shown in fig. 4 and 5, as an embodiment, all regions in the axial direction of the sleeve portion 121 may be provided with the internal thread 1211, so that as the shaft portion 111 is gradually screwed into the sleeve portion 121, the area of the threaded connection region between the shaft portion 111 and the sleeve portion 121 is gradually increased, and the damping force between the shaft portion 111 and the sleeve portion 121 is increased. Moreover, in a state that the shaft portion 111 is completely screwed into the sleeve portion 121, the length of the threaded connection region between the shaft portion 111 and the sleeve portion 121 is the axial length of the sleeve portion 121, the area of the threaded connection region between the shaft portion 111 and the sleeve portion 121 is maximized, the damping force between the shaft portion 111 and the sleeve portion 121 is maximized, the coated rotating shaft 100 achieves high reliability of random stagnation of the electronic device 1, and the coated rotating shaft can be applied to a scene where the electronic device 1 is ultra-thin and the installation space (where the coated rotating shaft 100 is installed) is very limited.

In another embodiment, the axial partial region of the sleeve portion 121 may be provided with the internal thread 1211, and in this case, even if the shaft portion 111 is completely screwed into the sleeve portion 121, the length of the threaded connection region between the shaft portion 111 and the sleeve portion 121 is smaller than the axial length of the sleeve portion 121, and the damping force between the shaft portion 111 and the sleeve portion 121 is slightly smaller. Therefore, the coated rotating shaft 100 can be applied to a scene that the installation space (for installing the coated rotating shaft 100) of the electronic device 1 is slightly larger, the volume of the coated rotating shaft 100 is larger, the threaded connection structure between the shaft part 111 and the sleeve part 121 is added on the basis that the circumferential surfaces of the shaft part 111 and the sleeve part can provide a larger friction area, and the damping force generated by the coated rotating shaft 100 is enough to stably realize the random stagnation function of the electronic device 1. Further, it is possible to avoid the inconvenience of a user having a small force due to an excessive damping force generated between the shaft portion 111 and the boss portion 121.

For example, the internal thread 1211 on the inner wall of the sleeve portion 121 may be a continuous thread extending along a whole section similar to the external thread 1111 on the outer wall surface of the shaft, wherein the internal thread 1211 on the inner wall of the sleeve portion 121 may be located at a middle section of the sleeve portion 121, or the internal thread 1211 on the inner wall of the sleeve portion 121 may extend from one end of the sleeve portion 121 to the other end. At this time, in the opening and closing angle range of the electronic device 1, in the process of screwing the shaft portion 111 into the shaft sleeve portion 121, the area of the threaded contact area between the shaft portion 111 and the shaft sleeve portion 121 may be kept unchanged or gradually increased, and will not be described again.

Alternatively, the internal thread 1211 on the inner wall of the sleeve portion 121 may be a multi-step thread intermittently extending, that is, a multi-step thread is provided at intervals on the inner wall of the sleeve portion 121 along the axial direction of the sleeve portion 121. At this time, in the opening and closing angle range of the electronic device 1, when the screw thread contact region between the shaft portion 111 and the sleeve portion 121 is in an intermittent increasing trend in the process of screwing the shaft portion 111 into the sleeve portion 121, when the screw thread closest to the front end (the end opposite to the first connection portion 112) on the shaft portion 111 moves to between two adjacent screw threads in the sleeve portion 121, the area of the screw thread contact region between the shaft portion 111 and the sleeve portion 121 is kept unchanged when the screw thread closest to the front end of the shaft portion 111 does not contact the next internal screw thread 1211 on the inner wall surface of the sleeve portion 121.

As for the cross-sectional shapes and sizes of the external thread 1111 on the outer wall surface of the shaft portion 111 and the internal thread 1211 on the inner wall surface of the sleeve portion 121, it is understood that the shape and size of the external thread 1111 of the shaft portion 111 should match the shape and size of the internal thread 1211 of the sleeve portion 121, and as for the specific shape and specific size of the external thread 1111 of the shaft portion 111 and the internal thread 1211 of the sleeve portion 121, the present embodiment is not particularly limited. Referring to fig. 6, when the cross-sectional shape of the male screw 1111 protruding from the outer wall of the shaft portion 111 is triangular, the cross-sectional shape of the recessed region between the female screws 1211 on the inner wall of the boss portion 121 is triangular, the cross-sectional shape of the recessed region corresponding to the male screw 1111 on the outer wall surface of the shaft portion 111 is trapezoidal, and the shape of the female screw 1211 protruding from the inner wall surface of the boss portion 121 may be trapezoidal.

The cross-sectional shapes of the male screw 1111 on the outer wall surface of the shaft portion 111 and the female screw 1211 on the inner wall surface of the boss portion 121 may be rectangular, trapezoidal, saw-toothed, or other special shapes. The pitch of the external thread 1111 of the shaft portion 111 and the internal thread 1211 of the sleeve portion 121 is not particularly limited in this embodiment, and may be determined according to the actual volume size of the coated rotating shaft 100 and the damping force required for the electronic device 1 to realize the dead function.

FIG. 7 is a schematic structural diagram of a shaft coupling provided in an embodiment of the present application; FIG. 8 is an exploded view of a coupling member provided in accordance with an embodiment of the present application; fig. 9 is a schematic structural diagram of a socket provided in the embodiment of the present application.

For different application scenarios, according to the orientation relationship between the two structural members that the coated rotating shaft 100 needs to be connected to, the position of the first connecting portion 112 on the shaft connecting member 110 and the position of the second connecting portion 122 on the socket member 120 are designed, specifically, taking the case that the two structural members connected to the coated rotating shaft 100 are located on the axial side of the coated rotating shaft and rotate around the coated rotating shaft 100 as an example, for a notebook computer 10, the display portion 210 and the main body portion 220 are both located on the axial side of the coated rotating shaft 100, and the display portion 210 rotates away from the coated rotating shaft 100 relative to the main body portion 220.

In order to connect the components located on the axial side of the cover type rotating shaft 100, as shown in fig. 7, the first connecting portion 112 of the shaft connector 110 may be extended to the axial side of the shaft portion 111 so that the first connecting portion 112 is connected to the components located on the axial side of the shaft portion 111 (for example, the display portion 210 of the notebook computer 10). Similarly, as shown in fig. 9, the second connecting portion 122 of the socket 120 may extend to a lateral side of the shaft sleeve portion 121 in the axial direction, so that the second connecting portion 122 is connected to a structural component (for example, the main body portion 220 of the notebook computer 10) located at the lateral side of the shaft sleeve portion 121.

Illustratively, for the first connecting portion 112 connected to one end of the shaft portion 111, the first connecting portion 112 may extend to the side of the shaft portion 111 in the radial direction of the shaft portion 111, and for the second connecting portion 122 connected to the outer wall surface of the shaft sleeve portion 121, the second connecting portion 122 may extend in the axial direction of the shaft sleeve portion 121, for example, the second connecting portion 122 extends to both ends of the shaft sleeve portion 121 in the axial direction of the shaft sleeve portion 121, and the second connecting portion 122 may extend to the side of the shaft sleeve portion 121 in the radial direction of the shaft sleeve portion 121. In this way, the balance of the forces generated between the cladding type rotating shaft 100 and the connected structural members can be ensured, and the cladding type rotating shaft 100 can rotate to the same side of the first connecting portion 112 and the second connecting portion 122 and be parallel to each other, at this time, the two structural members (for example, the display portion 210 and the main body portion 220 of the notebook computer 10) connected by the first connecting portion 112 and the second connecting portion 122 can be parallel to each other, and the electronic device 1 is in the fastened state.

In the case that one of the shaft connecting member 110 and the socket connecting member 120 is connected to the display portion 210 of the notebook computer 10, and the other is connected to the main body portion 220 of the notebook computer 10, since the shaft portion 111 of the shaft connecting member 110 is screwed into or out of the shaft sleeve portion 121 of the socket connecting member 120 during the process of opening and closing the notebook computer 10, the shaft portion 111 and the shaft sleeve portion 121 are displaced in the axial direction. In order to ensure that the display portion 210 does not shift or significantly shift in the process of rotating relative to the main body portion 220 so as to ensure the appearance effect of the notebook computer 10, or to avoid affecting or damaging other connection structures between the display portion 210 and the main body portion 220 under the condition that a flexible connection (for example, a flexible circuit board is connected between the display portion 210 and the main body portion 220) still exists between the display portion 210 and the main body portion 220, in the embodiment, in the process that the cover-type rotating shaft 100 drives the display portion 210 to rotate relative to the main body portion 220, the display portion 210 can move relative to the main body portion 220 so as to avoid the display portion 210 from shifting.

As described above, in practical applications, when the notebook computer 10 is opened or closed, the main body 220 is supported on a supporting surface such as a desktop and remains stationary, and the user rotates the display portion 210 to change the angle between the main body 220 and the main body. In contrast, one of the shaft connector 110 and the socket connector 120 connected to the main body 220 may be fixedly connected to the main body 220, and the other one connected to the display portion 210 may be slidably connected to the display portion 210, so as to compensate the offset of the display portion 210 and keep the display portion 210 at a preferred position when the cover-type rotating shaft 100 drives the display portion 210 to rotate relative to the main body 220.

Illustratively, referring to fig. 7 and 9, in conjunction with fig. 2, for the shaft connecting element 110, the first connecting portion 112 is connected to an end portion of the shaft portion 111 and protrudes to a side of the shaft portion 111, so as to design a structure of the first connecting portion 112, so as to achieve the sliding connection between the first connecting portion 112 and the display portion 210. For the socket 120, the second connecting portion 122 is located on the outer wall surface of the boss portion 121 and extends along the axial direction of the boss portion 121, and the second connecting portion 122 is conveniently and fixedly connected to the main body portion 220 of the notebook computer 10, for example, a mounting hole 1221 may be formed in the second connecting portion 122, and a locking member such as a screw or a rivet is inserted into the mounting hole 1221, so that the socket 120 is mechanically connected to the main body portion 220. Therefore, in the present embodiment, the shaft connector 110 can be slidably connected to the display portion 210 of the notebook computer 10, and the socket connector 120 can be fixedly connected to the main body 220 of the notebook computer 10.

It is understood that, in other embodiments, the shaft connector 110 may be connected to the main body 220 of the notebook computer 10, and the socket connector 120 may be connected to the display unit 210 of the notebook computer 10, and the shaft connector 110 may be slidably connected to the main body 220, and the socket connector 120 may be fixedly connected to the display unit 210, or the shaft connector 110 may be fixedly connected to the main body 220, and the socket connector 120 may be slidably connected to the display unit 210. In other application scenarios, the arrangement mode of the shaft connector 110 and the socket connector 120 and the connection mode with the corresponding structural member may be designed according to actual requirements, which is not specifically limited in this embodiment.

The following description will take the example where the cover hinge 100 is applied to the notebook computer 10, the hinge 110 of the cover hinge 100 is slidably connected to the display unit 210, and the socket 120 is fixedly connected to the main body 220.

Referring to fig. 7 and 8, for the shaft connector 110 slidably connected to the display portion 210, the first connection portion 112 of the shaft connector 110 may include a fixing portion 1121 and a sliding portion 1122. The fixing portion 1121 is connected to an end portion of the shaft portion 111, and the fixing portion 1121 may extend to a side of the shaft portion 111 in a radial direction of the shaft portion 111. The sliding portion 1122 is used for being fixedly connected to the display portion 210, a sliding slot 1122a is disposed on a side of the sliding portion 1122 facing the fixing portion 1121, and the fixing portion 1121 can extend into the sliding slot 1122a and slide along an extending direction of the sliding slot 1122a, so as to achieve the sliding connection between the first connecting portion 112 and the display portion 210.

In order to reduce the volume of the first connecting portion 112, one end of the fixing portion 1121 may be connected to the shaft portion 111, and the other end of the fixing portion 1121 extends into the sliding slot 1122a. Thus, only the extending length of the fixing portion 1121 is required to extend into the sliding slot 1122a, the length of the fixing portion 1121 is small, the overall volume of the shaft connecting member 110 is small, and the requirement of the light and thin electronic device 1 to install the covering type rotating shaft 100 in a limited space is met.

The extending direction of the sliding slot 1122a of the sliding portion 1122 may be parallel to the axial direction of the shaft portion 111, so as to satisfy the requirement that the display portion 210 translates in the axial direction of the cladding spindle 100 relative to the main body portion 220, and the display portion 210 is always kept at a preferred position in the process that the cladding spindle 100 drives the display portion 210 to rotate relative to the main body portion 220. In the case where the sliding portion 1122 is in planar contact with the display portion 210, a surface of the sliding portion 1122 on the side away from the fixing portion 1121 may be a flat surface, and the surface of the sliding portion 1122 on the side away from the fixing portion 1121 may be bonded or welded to the display portion 210, or, as shown in fig. 8, positioning holes 1122b may be provided in the sliding portion 1122, the positioning holes 1122b may be distributed in regions near both ends of the sliding portion 1122, for example, and the positioning holes 1122b may extend from the surface of the sliding portion 1122 to a bottom of the sliding grooves 1122a, and the sliding portion 1122 and the display portion 210 may be mechanically connected by inserting a locking member such as a screw or a rivet into the positioning holes 1122 b.

In addition, when the display unit 210 and the main body unit 220 are connected only by the cover type rotating shaft 100, or when the display unit 210 and the main body unit 220 are connected by soft connection but the soft connection stability is poor, the movement of the display unit 210 needs to be limited, that is, the sliding distance of the fixing portion 1121 of the first connecting unit 112 in the sliding portion 1122 needs to be limited. In contrast, as shown in fig. 7 and 8, when the sliding portion 1122 is connected to the display portion 210 by the locking member and the positioning hole 1122b of the sliding portion 1122 penetrates through the bottom of the slot of the sliding slot 1122a, the locking member is inevitably partially positioned in the sliding slot 1122a, and the sliding range of the fixing portion 1121 can be limited by the locking member near both ends in the sliding slot 1122a, so as to prevent the fixing portion 1121 from coming off the sliding slot 1122a. In the case where the sliding portion 1122 is bonded or welded to the display portion 210, the sliding slot 1122a may be provided as a sliding slot 1122a with both ends closed, or a stopper protrusion may be provided at a portion near both ends in the sliding slot 1122a to limit the sliding range of the fixing portion 1121 so as to prevent the fixing portion 1121 from coming off the sliding slot 1122a.

Referring to fig. 8, in some embodiments, the fixing portion 1121 may include a main plate portion 1121a and a guide portion 1121b, a plate surface of the main plate portion 1121a extends in a radial direction of the shaft portion 111, one end of the main plate portion 1121a is connected to an end portion of the shaft portion 111, the other end of the main plate portion 1121a extends to a side of the shaft portion 111, the guide portion 1121b is connected to an end of the main plate portion 1121a away from the shaft portion 111, the guide portion 1121b extends to the sliding portion 1122, the guide portion 1121b may be perpendicular to the plate surface of the main plate portion 1121a, and the guide portion 1122b extends into the sliding slot 1122a and moves along the sliding slot 1122a.

Because the shaft sleeve part 121 of the sleeve 120 is in a sleeve connection with the shaft rod part 111 of the shaft connecting member 110, the shaft sleeve part 121 is sleeved outside the shaft rod part 111, and the shaft sleeve part 121 and the shaft rod part 111 are in an interference fit relation, in order to facilitate the connection between the shaft sleeve part 121 and the shaft rod part 111, an elastic telescopic space can be provided between the shaft sleeve part 121 and the shaft rod part 111, so that the shaft rod part 111 with an outer diameter slightly larger than the inner diameter of the shaft sleeve part 121 can be forcibly inserted into the shaft sleeve part 121.

As shown in fig. 7, in this embodiment, an expansion joint 1212 may be disposed on the sleeve portion 121 of the socket 120, and the expansion joint 1212 extends to two ends of the sleeve portion 121 along an axial direction of the sleeve portion 121, for the purpose of ensuring sufficient strength and stability of the coated rotating shaft 100 applied to the slimmer electronic device 1, the volume of the coated rotating shaft 100 is generally small, and the shaft connecting member 110 generally adopts the solid shaft portion 111. The expansion joint 1212 provides a telescopic space for the shaft sleeve portion 121, and when the shaft portion 111 of the shaft connecting member 110 extends into the shaft sleeve portion 121, an external acting force presses the shaft sleeve portion 121 to increase the expansion degree of the expansion joint 1212, and the shaft sleeve portion 121 deforms to increase the internal space thereof, so that the shaft portion 111 is smoothly inserted into the shaft sleeve portion 121; after the shaft rod 111 is installed in place, the expansion joint 1212 retracts under the action of the elastic force of the shaft sleeve portion 121, the shaft sleeve portion 121 tightly covers the shaft rod 111, and the shaft sleeve portion 121 and the shaft rod 111 maintain interference fit, so that a sufficient damping force is ensured to be provided between the shaft sleeve portion 121 and the shaft rod 111 to achieve the random stagnation function of the electronic device 1.

For example, in order to ensure the stability and reliability of the socket 120, there should be a sufficient distance between the second connecting portion 122 and the expansion joint 1212 in the circumferential direction of the sleeve portion 121, so as to avoid the stress generated by the deformation of the sleeve portion 121 due to the expansion and contraction of the expansion joint 1212 from concentrating around the second connecting portion 122, so as to avoid the irreversible plastic deformation of the sleeve portion 121. For example, the second connection portion 122 and the expansion joint 1212 may be disposed oppositely, so that the deformation amount generated at the position of the second connection portion 122 on the shaft sleeve portion 121 is small, and no obvious stress concentration phenomenon is generated here, and the stability and reliability of the socket piece 120 are not affected.

In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the embodiments of the application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Claims

1. A coated rotating shaft is characterized by comprising a shaft connecting piece and a sleeve connecting piece;

the shaft connecting piece comprises a shaft rod part and a first connecting part connected to one end of the shaft rod part, the sleeve connecting piece comprises a shaft sleeve part and a second connecting part extending out of the outer wall surface of the shaft sleeve part, and the shaft sleeve part is sleeved outside the shaft rod part in an interference fit manner;

the outer wall surface of the shaft rod part is provided with an external thread, the inner wall surface of the shaft sleeve part is provided with an internal thread, and the internal thread is matched with the external thread.

2. The coated spindle of claim 1, wherein the external thread is a continuous extended complete thread on the outer wall surface of the spindle portion, and the external thread extends an axial length greater than or equal to an axial length of the sleeve portion.

3. The coated spindle of claim 2, wherein an end of the external thread extending toward the first connection portion is spaced apart from the first connection portion.

4. The coated rotary shaft according to any one of claims 1 to 3, wherein all regions of the sleeve portion in the axial direction are provided with the internal thread.

5. The coated rotary shaft as claimed in any one of claims 1 to 3, wherein a partial region in the axial direction of the sleeve portion is provided with the internal thread.

6. The coated rotary shaft as claimed in claim 5, wherein the internal thread is a continuous, extended, full-length thread on the inner wall of the sleeve portion.

7. The coated rotary shaft as defined in claim 5, wherein the internal thread is a multi-step thread intermittently extending on an inner wall of the boss portion.

8. The coated rotating shaft as claimed in any one of claims 1 to 3, wherein the sleeve portion is provided with expansion joints extending to both ends of the sleeve portion in the axial direction of the sleeve portion.

9. The covered shaft according to claim 8, wherein the second connecting portion extends in a radial direction of the sleeve portion, and the second connecting portion is elongated in an axial direction of the sleeve portion.

10. The coated rotating shaft as claimed in claim 9, wherein the second connecting portion and the expansion joint are disposed opposite to each other.

11. The coated spindle of any one of claims 1-3, wherein the first connecting portion includes a fixed portion and a sliding portion, the fixed portion is connected to the spindle portion, a side of the sliding portion facing the fixed portion has a sliding groove, and the fixed portion slides in the sliding groove.

12. The coated rotary shaft according to claim 11, wherein the extending direction of the slide groove is parallel to the axial direction of the shaft portion.

13. The covered spindle according to claim 11, wherein the extending direction of the fixing portion is a radial direction of the spindle portion, and one end of the fixing portion is connected to the spindle portion and the other end of the fixing portion slides in the sliding groove along the extending direction of the fixing portion.

14. The covered spindle according to claim 13, wherein the fixing portion includes a main plate portion extending to a side of the spindle portion in a radial direction of the spindle portion, and a guide portion perpendicularly connected to an end of the main plate portion away from an axis of the spindle portion, the guide portion extending into the chute.

15. An electronic device comprising at least two foldable portions capable of rotating relative to each other and at least one coated hinge according to any one of claims 1 to 14, wherein the coated hinge is connected between adjacent foldable portions.

16. The electronic apparatus according to claim 15, comprising a display portion and a main body portion, wherein the cover hinge is connected between the display portion and the main body portion.

17. The electronic apparatus according to claim 16, wherein a direction of screwing the cover hinge is the same as a direction of rotation when the display portion is away from the main body portion.

18. The electronic device according to claim 16, wherein a first connecting portion of a shaft connector of the cover hinge is connected to the display portion, and a second connecting portion of a socket connector of the cover hinge is connected to the main body portion.