CN206246509U - Double-shaft hinge - Google Patents

Abstract

A biaxial hinge includes: a first spindle; a second spindle, parallel to the first spindle; and a relative steering mechanism, including: a first helical gear coaxially disposed on the first spindle on the shaft; a second helical gear coaxially disposed on the second mandrel; a third helical gear located between the first helical gear and the second helical gear, and meshing with the first helical gear and the second helical gear respectively. The second helical gear causes the first spindle and the second spindle to rotate in opposite directions through transmission; a receiving seat has a receiving space for positioning the third helical gear; and a connecting buckle, It has a second positioning part for connecting and positioning the first positioning part. Thereby, when the first spindle and the second spindle rotate in opposite directions relative to each other, each helical gear can move accurately, and the two spindles can be kept in a position parallel to each other.

Description

Biaxial hinge

technical field

The utility model relates to a hinge, in particular to a biaxial hinge which can be used for the relative flipping of a display unit and a keyboard input unit of an electronic device.

Background technique

At present, flip-type or foldable electronic devices are common in the market. In addition to the original keyboard input unit, the display unit can also perform input operations by touch. In addition to the original use mode of the electronic device, the display unit can be turned over to 360 degrees through the structure of the biaxial hinge, so as to overlap with the back of the keyboard input unit.

The above-mentioned double-axis hinge structure can refer to "Two-axis Interlocking Rotary Shaft" in Taiwan Utility Model Patent Announcement No. TWM508190. The transmission of the column makes the second wheel and the second shaft rotate synchronously by the same angle. However, due to its low precision and inconvenient measurement, an automatic control method is adopted instead, such as the synchronous structure in the "Tilt Reversible Formal 360-degree Dual-axis Synchronous Damping Rotary Shaft" in the Chinese Utility Model Patent Announcement No. CN205064574U. Not all the same.

The advantage of the above synchronous mechanism is that the required size can be accurately measured by a calculator. However, the two ends of the drive worm are clamped by the fixed piece and the pressing piece, and the two worms are axially slid to separate Positioned on two shaft cores. After it is installed in the electronic device, due to the poor structural strength of the fixed piece and the pressure piece clamping the transmission worm, when the display unit and the keyboard input unit rotate relatively to generate a large force on the three worms, it will cause The fixed piece and the pressure piece are stretched to make the transmission worm shift or make the two worms slide axially, so that the stability of the transmission worm itself and the synchronous action with other worms cannot be improved, and it is easy for the user to touch the screen. , causing the screen to shake.

Utility model content

In view of this, in order to provide a structure different from the prior art and improve the shortcomings of the above structure, the inventor has accumulated many years of experience and continuous research and development, so the utility model is produced.

One purpose of this utility model is to provide a double-axis hinge, by positioning a helical gear for transmission in a housing with structural strength, and connecting two mandrels with a connecting buckle, and making the two The two helical gears on each mandrel mesh with the structure of the above-mentioned helical gears for transmission, so as to effectively limit the position, so that the double mandrels can be kept parallel to each other to avoid skewing, and the action of each helical gear is accurate, so as to prevent each helical The gear slides and loosens, so that when the gear is installed in the electronic device and the user touches the screen, the screen can be stably positioned for easy operation.

To achieve the purpose of the above utility model, the biaxial hinge provided by the utility model includes: a first spindle, a second spindle and a relative steering mechanism. Wherein, the first spindle and the second spindle are juxtaposed; the relative steering mechanism includes a first helical gear, a second helical gear, a third helical gear, an accommodating seat and a connecting buckle. The first helical gear is coaxially arranged on the first mandrel; the second helical gear is coaxially set on the second mandrel; the third helical gear is located between the first helical gear and the second helical gear, and meshes with the first helical gear respectively. A helical gear and a second helical gear are driven to make the first spindle and the second spindle rotate in opposite directions; the accommodating seat has an accommodating space for positioning the third helical gear, and one side of the accommodating seat has a The first positioning part and the two ends of the other side of the receiving seat respectively have a first shaft connection part and a second shaft connection part for respectively pivoting the first mandrel and the second mandrel; and the connecting buckle has A second positioning part for connecting and positioning the first positioning part, one end of the connecting buckle has a first fastening part for buckling the first mandrel, and the other end of the connecting buckle has a second buckling part for buckling the second mandrel.

During implementation, the accommodating seat has a first open arc groove and a second open arc groove communicated with the accommodating space to accommodate the first helical gear and the second helical gear respectively; the accommodating seat also has a The first positioning hole and the second positioning hole, the first positioning hole and the second positioning hole are located on the same axis, and the third helical gear is connected with a shaft bolt, and the two ends of the shaft bolt are respectively connected with the first positioning hole and the second positioning hole.

During implementation, one end of the shaft bolt has a bolt head, which is connected to the first positioning hole, and the bolt head gradually converges toward the opposite end of the shaft bolt, so that the bolt head forms a washer structure, which acts as a stop structure against the first positioning hole. One side of the three helical gears, and the second positioning hole gradually converges from the outside to the inside, so that the opposite end of the shaft pin is compressed and deformed to be fixed in the second positioning hole corresponding to the shaft connection, so that the third helical gear is positioned in the container. placed in the space.

In practice, the first positioning portion is at least one boss extending axially from one side of the receiving seat, and the second positioning portion is at least one through hole formed on the plate surface of the connecting buckle and corresponding to the at least one boss.

During implementation, there are at least two protruding posts, and the at least two protruding posts are arranged in one of a longitudinal arrangement and a transverse arrangement.

During implementation, the first fastening part includes a first positioning hole and a first notch that communicate with each other, and is positioned in the first positioning hole after the first mandrel passes through the first notch; the second buckling part includes a first positioning hole that is connected to each other The second positioning hole and the second notch are used for the second mandrel to be positioned in the second positioning hole after passing through the second notch; the first notch and the second notch are located on the same side of the connecting buckle.

During implementation, the accommodating seat may also include a base body and a connecting piece, the accommodating space is formed on the base body, one side of the base body has a third positioning portion, and the first shaft connection portion and the second shaft connection portion form a connection The two ends of the sheet, the connecting sheet has a fourth positioning portion for connecting and positioning the third positioning portion.

In practice, the above-mentioned third positioning portion is at least one protrusion extending axially from a side surface of the seat body, and the fourth positioning portion is at least one through hole formed on the plate surface of the connecting piece and corresponding to the third positioning portion.

During implementation, the above-mentioned fourth positioning part also includes a positioning groove formed on the plate surface of the connecting piece and communicating with the at least one through hole, and a positioning groove that fits in the positioning groove and can be integrated with the third positioning part. seal. And there are at least two protruding posts, and the at least two protruding posts are arranged in one of a longitudinal arrangement and a transverse arrangement.

During implementation, the utility model also includes a first torsion unit, a first friction unit, a second torsion unit and a second friction unit, the first torsion unit and the first friction unit are coaxially connected to the first mandrel, The second torsion unit and the second friction unit are coaxially connected to the second spindle; wherein, the first friction unit and the second friction unit are connected to each other.

The beneficial effects of the utility model are: the action of each helical gear is accurate to prevent the helical gear from slipping and loosening, and when installed in the electronic device and the user touches the screen, the screen can be stably positioned for easy operation.

Description of drawings

Figure 1 is an exploded view of the first embodiment of the utility model;

Fig. 2 is the three-dimensional appearance schematic diagram of the first embodiment of the present utility model;

Fig. 3 is the sectional view of the first embodiment of the utility model;

Fig. 4 and Fig. 5 are exploded views of different implementation states of the accommodating seat and the connecting buckle of the first embodiment of the present invention;

Fig. 6 is an exploded view of some components of the relative steering mechanism of the second embodiment of the present invention;

7 is a schematic perspective view of the three-dimensional appearance of the seat body of the second embodiment of the present invention;

Fig. 8 is a schematic diagram of implementing the fourth positioning part of the connecting piece in Fig. 4 with another structure;

FIG. 9 is a cross-sectional view of the assembly method of the second embodiment of the present invention.

Explanation of reference signs

1 Biaxial hinge 2 Primary spindle

21 First connection bracket 3 First friction unit

4 First torsion unit 5 Second spindle

51 Second connection bracket 6 Second friction unit

7 Second torsion unit 8 Relative steering mechanism

81 First helical gear 82 Second helical gear

83 Third helical gear 831 Shaft pin

832 Bolt Head 833 Washer Construction

84 Accommodating seat 841 Accommodating space

842 First positioning hole 843 Second positioning hole

844 First positioning part 845 First shaft connection part

846 Second shaft joint 847 First open arc groove

848 Second open arc groove 85 Connecting buckle

851 Second positioning part 852 First fastening part

853 First positioning hole 854 First notch

855 Second fastening part 856 Second positioning hole

857 Second notch 86 Seat body

87 Connecting piece 861 Third positioning part

871 Fourth positioning part 872 Perforation

873 Locating groove 874 Seal.

detailed description

For the convenience of having a deeper understanding of the utility model, it is now described in detail as follows:

The biaxial hinge of the present utility model includes a relative steering mechanism, which is respectively connected to two parallel first and second spindles that can rotate in opposite directions, and one end of the first spindle is connected to a first connecting shaft. A bracket, the first connecting bracket is connected to the display unit of the electronic device, one end of the second mandrel is connected to a second connecting bracket, and the second connecting bracket is connected to the keyboard input unit, so that when the user turns over the display unit, the display unit drives the first mandrel , and link the relative steering mechanism and the second mandrel so that the display unit and the keyboard input unit form the same angle.

Please refer to Fig. 1-Fig. 3, which is the first embodiment of the biaxial hinge 1 of the present invention, including: a first mandrel 2, a first friction unit 3, a first torsion unit 4, a The second spindle 5 , a second friction unit 6 , a second torsion unit 7 and a relative steering mechanism 8 .

One end of the first spindle 2 is connected to the first connecting bracket 21, the first connecting bracket 21 is connected to the display unit of the electronic device, and the other end of the first spindle 2 is connected to the first friction unit 3 and the first torsion unit 4; One end of the two spindles 5 is connected to the second connecting bracket 51 , the second connecting bracket 51 is connected to the keyboard input unit, and the other end of the second spindle 5 is pivotally connected to the second friction unit 6 and the second torsion unit 7 . Among them, the first torsion unit 4 and the second torsion unit 7 respectively include a plurality of axially stacked annular shrapnel, a plurality of axially butted annular washers and an end seal nut, and jointly include a plurality of The connecting pieces of the holes are arranged to overlap with these washers, or to be arranged between these elastic pieces and these washers, so as to serve as the source of rotational torque of the first spindle 2 and the second spindle 5; and the first friction unit 3 and The second friction unit 6 is connected to each other. The first friction unit 3 and the second friction unit 6 respectively include a plurality of axially stacked clips with gaps, or are formed by stacking a plurality of connecting pieces with only axial holes. In order to compensate the rotational torque of the first torsion unit 4 and the second torsion unit 7, to elastically adjust the rotational frictional torsion generated by the first mandrel 2 and the second mandrel 5 and to have the effect of free stagnation.

The relative steering mechanism 8 includes a first helical gear 81 , a second helical gear 82 , a third helical gear 83 , a receiving seat 84 and a connecting buckle 85 . Wherein, the first helical gear 81 is coaxially arranged on the first mandrel 2, and the first helical gear 81 can be directly made on the first mandrel 2, or the first helical gear 81 and the first mandrel 2 can be mutually The second helical gear 82 is coaxially arranged on the second mandrel 5, and the second helical gear 82 can be directly made on the second mandrel 5, or the second helical gear 82 and the second mandrel The shafts 5 are closely matched with each other.

The accommodation seat 84 has an accommodation space 841 for accommodating the third helical gear 83, and the two ends of the accommodation seat 84 have a first open arc groove 847 and a second open arc groove 848 communicating with the accommodation space 841 to accommodate the third helical gear 83. The first helical gear 81 and the second helical gear 82 are accommodated respectively; the two sides of the accommodating base 84 have a first positioning hole 842 and a second positioning hole 843 communicating with the accommodating space 841, the first positioning hole 842 and the second positioning hole The positioning holes 843 are located on the same axis, and the third helical gear 83 is pivotally connected with a shaft pin 831 , and the two ends of the shaft pin 831 are respectively pivotally connected with the first positioning hole 842 and the second positioning hole 843 . One end of the shaft bolt 831 has a bolt head 832, which is connected to the first positioning hole 842. The bolt head 832 gradually converges toward the opposite end of the shaft bolt 831, so that the bolt head 832 forms a washer structure 833 as a stop structure to resist By the side of the third helical gear 83 . As shown in FIG. 3 , since the first positioning hole 842 runs through one side of the receiving seat 84 with the same aperture, in order to prevent the bolt head 832 from approaching the third helical gear 83 and hinder the movement of the first helical gear 81 and the second helical gear 82 , the washer structure 833 is used to solve this problem.

The second positioning hole 843 gradually converges from the outside to the inside, and the opposite end of the shaft pin 831 is pressed and deformed to be fixed in the second positioning hole 843 corresponding to the shaft, so that the third helical gear 83 is positioned in the accommodation space 841 And located between the first helical gear 81 and the second helical gear 82 . Both ends of the accommodating space 841 pass through a through hole to communicate with the first open arc groove 847 and the second open arc groove 848, so that the third helical gear 83 meshes with the first helical gear 81 and the second helical gear 82 respectively. The transmission makes the first mandrel 2 and the second mandrel 5 rotate in opposite directions relative to each other. In addition, two protruding posts arranged laterally extend axially from one side of the accommodating seat 84, and the two protruding posts are used as the first positioning portion 844. The portion 845 and the second shaft connection portion 846 , the first shaft connection portion 845 and the second shaft connection portion 846 respectively have shaft holes for pivotally connecting the first mandrel 2 and the second mandrel 5 respectively.

The connecting buckle 85 is a plate, and there are two perforations on the plate of the connecting buckle 85. The positions of the two perforations correspond to the positions of the two protrusions of the first positioning part 844, such as on the double mandrel. When the distance between them is short, the corresponding two bosses and two perforations can be arranged horizontally, and the two perforations are used as the second positioning part 851, so that after the second positioning part 851 connects and positions the first positioning part 844 , so that the connecting buckle 85 is adjacent to one side of the accommodating seat 84 . In practice, the first positioning part 844 can also be shown in Figure 4, which is a block extending axially from one side of the housing 84, and the block can match the long and short distances between the double mandrels to lengthen them Vertical length or horizontal length. The second positioning portion 851 is formed on one side of the plate surface of the connecting buckle 85 and corresponds to a gap at the position of the block, so that after the notch of the connecting buckle 85 engages the block, the connecting buckle can be The 85 is guided into position without tilting. In addition, as shown in FIG. 5 , the first positioning portion 844 can also be two blocks extending axially on one side of the receiving seat 84 , and the second positioning portion 851 is formed on the opposite two sides of the plate surface of the connecting buckle 85 . The two notches on the side and corresponding to the positions of the two blocks can also make the connecting buckle 85 close to the side surface of the receiving seat 84 when each block is respectively engaged in each notch.

One end of the connecting buckle 85 has a first fastening portion 852, and the first fastening portion 852 is provided with a first positioning hole 853 and a first notch 854 communicating with each other; the other end of the connecting buckle 85 has a second The fastening portion 855 and the second fastening portion 855 are provided with a second positioning hole 856 and a second notch 857 communicating with each other. The diameter of the first positioning hole 853 is larger than the width of the first notch 854 , the diameter of the second positioning hole 856 is larger than the width of the second notch 857 , and the first notch 854 and the second notch 857 are located on the same side of the connecting buckle 85 . Thereby, when the connecting buckle 85 is fastened to the first mandrel 2 and the second mandrel 5, the first mandrel 2 can be positioned in the first positioning hole 853 after passing through the first notch 854, and the second mandrel 2 can be positioned in the first positioning hole 853. After the two mandrels 5 pass through the second notch 857, they are positioned in the second positioning hole 856, and then matched with the first shaft connection portion 845 and the second shaft connection portion 846 at the other two ends of the receiving seat 84, so that the first The helical gear 81 and the second helical gear 82 are respectively limited at the first open arc groove 847 and the second open arc groove 848 to prevent them from slipping and dislocation.

Please refer to Figures 6 and 7, which is the second embodiment of the biaxial hinge 1 of the present invention, which is different from the first embodiment in that: the accommodating base 84 includes a base 86 and a connecting piece 87 , the accommodating space 841 is formed on the seat body 86, and there are two protrusions extending axially opposite to the first positioning portion 844 on one side of the seat body 86, and the two protrusions serve as the third positioning portion 861 . The first shaft connection portion 845 and the second shaft connection portion 846 are formed at both ends of the connecting piece 87. The plate surface of the connecting piece 87 has two perforations. For example, when there is a long distance between the double mandrels, the corresponding two protrusions and two through holes can be arranged longitudinally, and the two through holes serve as the fourth positioning portion 871 . Thereby, after the fourth positioning portion 871 connects and positions the third positioning portion 861 , the connecting piece 87 can be closely adjacent to one side surface of the seat body 86 .

In the above-mentioned embodiment, the technical means of making the connecting piece 87 adjacent to one side of the seat body 86 can also be shown in Figures 8 and 9, a positioning groove 873 is formed on the plate surface of the connecting piece 87 for accommodating A sealing member 874 is combined, and a through hole 872 passes through the connecting piece 87 and communicates with the positioning groove 873 . During implementation, since the perforation 872 corresponds to the position of the third positioning portion 861, and the size of the perforation 872 is slightly smaller than the longitudinal or transverse oblong size of the positioning groove 873, therefore, the die-casting (Die-Casting) or Metal Injection Molding (MIM) the third positioning portion 861 of the seat body 86 is not limited to be a boss or a plurality of bosses, and can be connected with the sealing member through the through hole 872 874 is combined into one body, so that the seat body 86 and the connecting piece 87 are engaged and fixed. After the third helical gear 83 and the shaft pin 831 are installed and positioned in the seat body 86, the first spindle 2 and the second spindle 5 are connected to the first shaft connection portion 845 and the second shaft connection portion of the connecting piece 87 respectively. part 846, so that the first helical gear 81 and the second helical gear 82 mesh with the third helical gear 83 respectively, so that the first positioning part 844 of the seat body 86 is butted against the second positioning of the connecting buckle 85 between the two spindles Part 851 to securely fix.

Therefore, the utility model has the following advantages:

1. In the utility model, the third helical gear is positioned in the accommodation seat, and the two mandrels are respectively fastened with the connecting buckle, and then the first positioning part is provided on one side of the accommodation seat to connect the connecting buckle. The second positioning part at the corresponding position positions each other to help the two helical gears on the two mandrels mesh with the third helical gear respectively. Therefore, the three helical gears can be effectively limited, so that the action of each helical gear is accurate. To prevent the helical gears from slipping in the axial direction, and keep the two mandrels parallel to each other to avoid skewing, and then when installed in the electronic device and the user touches the screen, the screen can be stably positioned for easy operation .

2. In the utility model, the receiving seat can be divided into a seat body and a connecting piece, so as to facilitate manufacturing and processing; and positioning structures are provided on opposite sides of the seat body in the axial direction, so as to correspond to the connecting piece and the connecting piece respectively. Buckles can help to assemble to position.

3. The first helical gear of the utility model is coaxially fixed on the first mandrel, the second helical gear is coaxially fixed on the second mandrel, and the connecting buckle connects the first mandrel and the second mandrel in a snap-fitting manner. The mandrel, therefore, enables the first fastening part connecting one end of the buckle to be conveniently and quickly positioned on one side of the first helical gear, and the second fastening part connecting the other end of the buckle to be conveniently and quickly positioned on the first helical gear. One side of two helical gears to speed up the assembly speed, thus reducing the production cost.

To sum up, according to the content disclosed above, the utility model can indeed achieve the expected purpose, providing a double-axis hinge that can not only facilitate assembly, but also make the action of each helical gear assembly accurate, which is extremely industrial Based on the value of the above utilization, a utility model patent application is filed according to the law.

Claims (11)

1. a kind of biaxial hinge, it is characterised in that including：

One first heart axle；

One second heart axle, it is arranged side by side with first heart axle；And

One relative steering mechanism, including：

One first helical gear, is coaxially disposed on first heart axle；

One second helical gear, is coaxially disposed on second heart axle；

One the 3rd helical gear, between first helical gear and second helical gear, and engages first spiral shell respectively Rotation gear and second helical gear, make first heart axle and second heart axle rotate backward relatively by transmission；

One accommodation seat, with an accommodation space, for positioning the 3rd helical gear, the side of the accommodation seat has one first positioning Portion, the two ends of the opposite side of the accommodation seat have one first axis part and one second axis part respectively, for axle respectively connect this first Heart axle and second heart axle；And

One connection cramp, with one second location division, first location division is positioned for connection, and one end of the connection cramp has one First engaging portion, for snapping first heart axle, the other end of the connection cramp has one second engaging portion, for snapping second heart Axle.

2. biaxial hinge as claimed in claim 1, it is characterised in that the accommodation seat has one the connected with the accommodation space One opens arc groove and one second opens arc groove, to house first helical gear and second helical gear respectively；The accommodation seat Also there is one first location hole and one second location hole connected with the accommodation space, first location hole and second location hole On same axial line, and the 3rd helical gear is connect with an axle stud shaft, and axle connects first positioning respectively at the two ends of the axle bolt Hole and second location hole.

3. biaxial hinge as claimed in claim 2, it is characterised in that one end of the axle bolt has a bolt head, for axle connect this One location hole, the bolt head is in restrain shape gradually towards the opposite end of the axle bolt, for forming a gasket construction, as stop configurations And it is resisted against the side of the 3rd helical gear；Second location hole by restraining gradually inwardly outward, for the relative side pressure of the axle bolt Compel deformation and be fastened in second location hole that respective shaft connects so that the 3rd helical gear be positioned at the accommodation space it In.

4. biaxial hinge as claimed in claim 1, it is characterised in that first location division is by the one side axle of the accommodation seat To at least projection for extending, second location division is to be formed in the plate face of the connection cramp and corresponding to an at least projection At least one perforation.

5. biaxial hinge as claimed in claim 4, it is characterised in that the projection at least two, at least two projection is in Longitudinal arrangement or transversely arranged therein a kind of arrangement mode.

6. biaxial hinge as claimed in claim 1, it is characterised in that first engaging portion includes that be interconnected one first determines Position hole and one first breach, for first heart axle by after first breach, being positioned among first location hole；This second Engaging portion includes interconnected one second location hole and one second breach, for second heart axle by after second breach, It is positioned among second location hole；First breach and second breach are located at the same side of the connection cramp.

7. the biaxial hinge as described in claim 1,2,4 or 6, it is characterised in that the accommodation seat includes a pedestal and a connection Piece, the accommodation space is formed on the pedestal, and the side of the pedestal has one the 3rd location division, and first axis part and this Two axis parts form the two ends of the connection sheet, and the connection sheet has one the 4th location division, for the 3rd location division of connection positioning.

8. biaxial hinge as claimed in claim 7, it is characterised in that the 3rd location division is by the one side axial direction of the pedestal Extend an at least projection, the 4th location division be formed in the plate face of the connection sheet and corresponding to the 3rd location division extremely A few perforation.

9. biaxial hinge as claimed in claim 8, it is characterised in that the 4th location division also includes being formed at the connection sheet In plate face and connect detent at least one perforation and be embedded in the detent and can be with the 3rd location division The sealing part being combined as a whole.

10. biaxial hinge as claimed in claim 8, it is characterised in that the projection at least two, at least two projection is in Longitudinal arrangement or a kind of transversely arranged arrangement mode therein.

11. biaxial hinges as claimed in claim 1, it is characterised in that also single including one first twist cell, one first friction Unit, one second twist cell and one second friction element, first twist cell and the first friction element co-axial shafts connect this Wholeheartedly axle, second twist cell and the second friction element co-axial shafts connect second heart axle, first friction element and this Two friction elements are in the state being connected with each other.