CN203130774U - Pin type snap-lock type double-shaft pivot device - Google Patents

Abstract

The utility model relates to a pin-type snap-lock type double-shaft pivot device, which comprises a connecting bracket, a first mandrel and a second mandrel which are parallel to each other, a first clamping cam, a second clamping cam and a pin; the connecting bracket comprises a body and a first connecting body between the upper end part and the lower end part of the body, and a through hole is formed in the first connecting body in a penetrating way; the first mandrel is pivoted with the upper end part of the body; the first clamping cam is sleeved and clamped with the first mandrel and is close to the upper orifice of the through hole, and at least one first clamping part is arranged on the periphery of the first clamping cam; the second spindle is pivoted with the lower end part of the body; the second clamping cam is sleeved and clamped with the second mandrel and is close to the lower orifice of the through hole, and at least one second clamping part is arranged on the periphery of the second clamping cam; the bolt penetrates through the through hole and is provided with at least one section on the periphery, and the upper end and the lower end of the bolt respectively correspond to the first clamping part and the second clamping part; in addition, a notch can be provided at the first connection body to communicate with the through-hole.

Description

Pin-type snap-lock double-axis hub

technical field

The utility model is a pin-type latching double-axis pivot device, in particular to a pivot device including two shafts and capable of turning over 360 degrees, which is suitable for flip-top electronic devices. the

Background technique

For general clamshell electronic products (such as notebook computers, mobile phones or e-book readers), in order to enable the screen of the electronic product to be opened and turned over 180 degrees relative to the main body (the main body has a keyboard) (for example, it can be turned to 360 degrees) Afterwards, the situation of mutual interference will not occur, thus a biaxial hinge device is produced. It can be referred to the previous application that the inventor has applied for, that is, a kind of "pulley pulley" disclosed by the announcement No. M438797 of Taiwan Patent Document 1. The new type patent of snap-lock double-axis hinge device includes the first shaft, the second shaft, the first connecting piece and the second connecting piece. The first rotating shaft is provided with a first engaging cam, and the first engaging cam is provided with a recess. The second rotating shaft is provided with a second engaging cam, and the second engaging cam is provided with a recess, and a pulley is interposed between the first connecting piece and the second connecting piece, and the pulley is movably fitted in the recess of the first engaging cam Or the concave portion of the second engaging cam to limit the movement of the first shaft or the second shaft, thereby ensuring the sequence and mode of action of the shafts and maintaining the stability of the electronic device turning on and off. the

Utility model content

However, in order to facilitate users to carry and store nowadays, flip-top electronic products tend to be small in size and thin in size, resulting in extremely limited space for the dual-axis hinges inside, which further makes the components of the dual-axis hinges Small-sized components are also formed, so there must be a design to reduce the installation process, and the structure of the biaxial hinge itself must be easy to adjust (or easy to design changes), but when you want to reduce or increase the size of the pulleys in the above-mentioned patent document 1, Since the radius of curvature of the wheel body of the pulley is fixed, if only the pulley is adjusted (increased or reduced in size), the contact area between the adjusted pulley and the concave portion of each engaging cam will be difficult to fit, which will easily affect the locking effect. And when it is moved to fit, it is also easy to produce a collision sound, and because the two ends of the pulley are inserted and combined with the sliding holes of the first and second connecting pieces with protrusions, there will also be a change of the first and second joints together. The situation of connecting sheet takes place, promptly inconvenient, promptly becomes the problem that the utility model desires to solve like this. the

In view of this, in order to solve the above-mentioned problems, the purpose of this utility model is to provide a pin-type locking type biaxial hinge, by setting a through hole in the first connecting body of the connecting bracket, and by using a latch and setting Cutting surface, as a technical means to adjust the overall volume of the utility model, can also set a cutout on the first connecting body to communicate with the through hole, which also increases the convenience of adjusting or changing the design, which is conducive to assembling in small-sized electronic products. Add the applicable electronic product types. the

Another object of the present invention is to provide a pin-type locking double-axis hinge that can reduce abnormal noise, so that it has the effect of reducing the impact sound and prolonging the service life of the rigid wheel body. the

In order to achieve the above purpose, the utility model is a pin-type snap-lock type biaxial hinge, which has two technical solutions for realization. The first technical solution is a pin-type snap-lock type bi-axial hinge. It includes: a connecting bracket, which includes a main body and a first connecting body, the first connecting body is located on the wall of the main body and between the upper and lower ends of the main body, and the connecting bracket is provided with a through hole passing through the first connecting body; A mandrel, which is pivotally arranged on the upper end of the body; the first engaging cam, which is sleeved and engaged on the first mandrel and is located near the upper opening of the through hole, is provided on the peripheral side of the first engaging cam at least one first engaging part; a second spindle parallel to the first spindle, which is pivotally arranged on the lower end of the body; a second engaging cam, which is sleeved and engaged with the second spindle and is located near the through hole The lower opening of the second locking cam is provided with at least one second engaging portion; and the pin is passed through the through hole of the connecting bracket, and the upper and lower ends of the pin correspond to the first An engaging part and the second engaging part, the peripheral side of the bolt is provided with at least one cut surface that can be attached to the wall surface, so that the upper end of the bolt contacts the peripheral side of the first engaging cam in the rotating state, then the lower end of the bolt Correspondingly fit in the second engaging part to lock the second engaging cam, or make the upper end of the bolt correspondingly fit in the first engaging part to lock the first engaging cam, then the bolt's The lower end contacts the peripheral side of the second engaging cam in the rotating state. the

In order to achieve the above purpose, the second technical solution of the present utility model is a pin-type latching double-axis hinge, which includes: a connecting bracket, which includes a main body and a first connecting body, and the first connecting body is located at On the wall of the main body and between the upper and lower ends of the main body, the connecting bracket is provided with a through hole passing through the first connecting body, and the first connecting body is provided with a slit communicating with the through hole; the first mandrel, its Pivoted on the upper end of the body; the first engaging cam is sleeved and engaged on the first mandrel and is located near the upper opening of the through hole, and at least one first engaging cam is provided on the peripheral side of the first engaging cam the second mandrel parallel to the first mandrel, which is pivotally arranged at the lower end of the body; the second engaging cam, which is sleeved and engaged with the second mandrel and is located near the lower opening of the through hole, At least one second engaging portion is provided on the peripheral side of the second engaging cam; and a pin, which passes through the through hole of the connecting bracket, and the upper and lower ends of the pin correspond to the first engaging portion and the first engaging portion respectively. As for the second engaging part, at least one cut surface that can be attached to the wall surface is provided on the peripheral side of the bolt, so that the upper end of the bolt contacts the peripheral side of the first engaging cam in the rotating state, and the lower end of the bolt is correspondingly fitted into the The second engaging part is used to lock the second engaging cam, or the upper end of the bolt is correspondingly fitted to the first engaging part to lock the first engaging cam, then the lower end of the bolt contacts and rotates The second engagement cam peripheral side of the state. the

Accordingly, the pin-type snap-lock type biaxial hinge device of the present invention can adjust the overall volume of the present utility model as a convenience by setting a through hole in the first connecting body of the connecting bracket, and by adopting a latch and setting a cutting surface. The technical means can be provided in the first connecting body to communicate with the through hole, and the convenience of adjusting or changing the design is also increased, which is conducive to assembly in small-sized electronic products, so as to increase the types of applicable electronic products, and can also Ensure the actuation sequence of the dual-axis hinge so that the electronic product can rotate and open and close stably. the

Description of drawings

Fig. 1 is the first embodiment diagram of the pin-type locking type biaxial hinge device of the present invention;

Fig. 2 is the three-dimensional exploded view of Fig. 1;

Fig. 3 is a schematic diagram of the implementation of the pin-type snap-lock type biaxial hinge device in Fig. 1 and then assembled with a shell and a fixing piece;

Fig. 4 is a three-dimensional exploded view of the pin-type locking type biaxial hinge device in Fig. 3 from another angle of view;

Fig. 5 is a schematic diagram of the combination of the pin-type snap-lock type biaxial hub, the shell and the fixing part in Fig. 3;

Fig. 6 is a three-dimensional schematic diagram of the implementation of the first engaging cam of the utility model further provided with a ring groove and a rubber collar;

Figure 7 is a schematic perspective view of the combination of the first engaging cam, ring groove and rubber collar in Figure 6;

Figure 8 is a second embodiment diagram of the pin-type snap-lock type biaxial hinge device of the present invention;

Figure 9 is a three-dimensional exploded view of Figure 8;

Fig. 10 is another view of the implementation of the pin-type locking type biaxial hinge in Fig. 9 reassembled with a shell and a fixing piece. the

Detailed ways

Please refer to Fig. 1 to Fig. 7, which show the pin-type locking type biaxial hinge device of the first embodiment of the present invention, which includes a connecting bracket 10, a first spindle 20, a first engaging cam 30, a parallel The combined design of the second spindle 40 based on the first spindle 20 , the second engagement cam 50 and the pin 60 . the

The connecting bracket 10 includes a main body 11 and a first connecting body 12. The first connecting body 12 is located on the wall of the main body 11 and between the upper and lower ends 13, 14 of the main body 11. The connecting bracket 10 is provided with a first connection The through hole 15 of the body 12; the first mandrel 20 is pivotally arranged on the upper end 13 of the body 11; the first engagement cam 30 is sleeved and engaged with the first mandrel 20 and is located near the upper hole of the through hole 15 At least one first engaging portion 31 is provided on the peripheral side of the first engaging cam 30; the second spindle 40 is pivotally arranged on the lower end 14 of the body 11; the second engaging cam 50 is sleeved and engaged At the lower opening of the second mandrel 40 and near the through hole 15 , at least one second engaging portion 51 is provided on the peripheral side of the second engaging cam 50 ; the pin 60 passes through the through hole 15 of the connecting bracket 10 The upper and lower ends of the bolt 60 correspond to the first engaging portion 31 and the second engaging portion 51 respectively, and at least one cut surface 61 that can be attached to the wall surface is provided on the peripheral side of the bolt 60, so that the The upper end of the latch 60 contacts the peripheral side of the first engaging cam 30 in the rotating state, and the lower end of the latch 60 is correspondingly fitted into the second engaging portion 51 to lock the second engaging cam 50, or the latch 60 The upper end of the bolt 60 is correspondingly fitted into the first engaging portion 31 to lock the first engaging cam 30 , and the lower end of the bolt 60 contacts the peripheral side of the second engaging cam 50 in the rotating state. the

In the first embodiment, there are two locking states formed. The first locking state is when the upper end of the latch 60 contacts the peripheral side of the first engagement cam 30, the lower end of the latch 60 is correspondingly fitted and locked. In the second engaging portion 51 of the second engaging cam 50, and in the second locked state, when the lower end of the latch 60 contacts the peripheral side of the second engaging cam 50, the upper end of the latch 60 is correspondingly fitted and locked. The first engaging portion 31 of the first engaging cam 30 ensures the actuation sequence of the dual-axis hinge device of the present invention. the

In order to make the upper and lower ends of the bolt 60 fully fit on the first engaging portion 31 and the second engaging portion 51 respectively, which is beneficial for locking and reducing the influence of design changes, the utility model Novel therefore adopts latch 60 instead of rollers (or pulleys), because the overall shape of latch 60 is different from rollers (or pulleys), and because the size of the components made is small, plus latch 60 is not easy to roll, so it can facilitate assembly and prevent It is easy to loosen, and although the shape of the bolt 60 can be designed into a round rod shape, in order to reduce the interference (such as self-rotation) of the bolt 60 during displacement and increase stability, the utility model is to set at least one cut surface 61 to It prevents rotation and also has the effect of Fool-proofing design, and as long as the position between the upper and lower ends of the latch 60 is changed, the volume can be changed, and the original locking effect can still be maintained, so it is not easy to change the volume after Incomplete bonding occurs due to gaps; on the other hand, in order to increase the scope of application, the first and second engaging portions corresponding to each other and the upper and lower ends of the plug 60 can also be both be arc-shaped (for example: arc-convex and arc-concave), conical (for example: convex-cone-shaped and concave-cone-shaped) corresponding to each other, or make the upper and lower ends of the latch 60 be conical and circular respectively. arc-shaped, and the first and second engaging parts 31, 51 are corresponding shapes that can be completely fitted. the

The utility model also includes two limit fixing pieces 701, 702, each limit fixing piece 701, 702 is provided with a pivot hole 71 and two buckle parts 72, and is also provided on the peripheral side of the first connecting body 12. Two buckle slots 121, the two buckle parts 72 of each limit fixing piece 701, 702 are respectively buckled in each buckle groove 121, so that each limit fixing piece 701, 702 is respectively located on the opposite side of the first connecting body 12 The two ends form a symmetrical shape, so as to reduce the volume, and the first mandrel 20 and the second mandrel 40 that can be arranged side by side are also pivotally arranged on the pivot holes 71 of each limiting fixing piece 701, 702, and each limiting fixing piece 701 The pivot holes 71 of , 702 are respectively corresponding to the pivot holes of the upper and lower ends 13, 14 of the body 11 (unlabeled, as shown in Fig. 2); 73, each block is stamped and formed, and the first mandrel 20 and the second mandrel 40 all include a first stopper 21 and a second stopper 41 that match the stopper 73 to limit the rotation stroke; in addition, the first The mandrel 20 also includes a non-circular first rod part 22 and a first fixing part 23 for assembling and fixing, respectively located at both ends of the first stop part 21, and the second mandrel 40 also includes a non-circular The second rod portion 42 and the second fixing portion 43 for assembling and fixing are respectively located at two ends of the second stop portion 41 . the

In addition, at least one cut surface 61 of the bolt 60 also includes two cut surfaces 61, each cut surface 61 is cut from the upper end of the bolt 60 to the lower end of the bolt 60, wherein the bolt 60 is arranged on the two cut surfaces 61 respectively. Relative to both sides, make the whole latch 60 tend towards flat shape, which helps to reduce the overall volume of the utility model, and in order to make each cut surface 61 flat, the protrusions of each cut surface 61 are removed by processing, and each cut surface 61 is flat. The concave portion 611 is formed so that the two tangent surfaces 61 of the plug 60 are respectively attached to the wall surface of the main body 11 and the inner wall surface of the corresponding through hole 15. Influenced by the design position of the through hole 15, the two inner walls of the through hole 15 can also be attached respectively; the recesses 611 of the above-mentioned cut surfaces 61 can also be two opposite orifices of the perforation. the

The bolt 60 is further provided with two flat surfaces 62 on the peripheral side between its upper and lower ends. Each flat surface 62 is alternately adjacent to each cut surface 61 , thereby preventing the bolt 60 from tilting and moving stably. the

Referring again to Fig. 6 and shown in Fig. 7, described first engaging part 31 is the two wheel surfaces of notch and runs through the first engaging cam 30 (extends from one wheel surface of this first engaging cam to the other wheel surface) surface), the second engaging part is a gap and runs through the two wheel surfaces of the second engaging cam (extending from the wheel surface of the second engaging cam to the other wheel surface, not shown, refer to the same shown in the first engaging cam of the structure), and a ring groove 32 and a rubber collar 33 positioned at the ring groove 32 are all provided on the peripheral side of the first engaging cam 30 and the peripheral side of the second engaging cam, so as to prevent The rubber collar 33 is easy to loosen; each notch is shallower than each ring groove 32 (that is, the depth of the notch recessed on the side of the engagement cam is shallower than the depth of each ring groove), so that each rubber collar 33 is buried separately A buffer layer is formed in each ring groove 32 and at the first engaging portion 31 and the second engaging portion respectively, so that when the upper and lower ends of the latch 60 are respectively fitted into the engaging portions of each engaging cam , has the effect of reducing the impact sound and increasing friction, and can also prevent the rigid pin from directly colliding with the rigid engagement cam to cause damage, so as to prolong the service life. the

Since the first spindle 20 and the second spindle 40 are respectively sleeved and engaged with the first braking cam 24 and the second braking cam 44, the upper and lower ends of the main body 11 are located at the main body 11. The opposite wall surfaces of the first brake cam 24 and the second brake cam 44 respectively contact the wheel surface, and the first spindle 20 is also sleeved with a first elastic unit 25 and a first nut 26, the second core The shaft 40 is also sleeved with a second elastic unit 45 and a second nut 46, so that when the first spindle 20 and/or the second spindle 40 rotate, the first braking cam 24 and the second braking cam 44 forms a clutch operation with the upper and lower ends 13, 14 of the main body 11 respectively. the

In addition, the utility model also includes a shell 80 and a fixing member 81, the opposite ends of the shell 80 are respectively provided with accommodating groove 82 and a perforation 83 communicating with the accommodating groove 82, and on the opposite wall of the body 11 and Corresponding to the first connecting body 12, a second connecting body 16 is provided, and the second connecting body 16 is provided with a connecting hole 161. The fixing member 81 passes through the through hole 83 of the shell 80 and is connected (for example, screwed) to the second connecting body 16. The connecting hole 161 of the two connecting bodies 16, thereby making the accommodating groove 82 accommodate the connecting bracket 10, the first rod portion 22, the first braking cam 24, the first elastic unit 25, the first nut 26, the first An engaging cam 30, a second rod portion 42, a second braking cam 44, a second elastic unit 45, a second nut 46, a second engaging cam 50, a latch 60 and each limiting and fixing piece 701, 702, The edges of each limiting and fixing piece 701 , 702 and the edge of the main body 11 are provided with a plurality of protrusions, which are beneficial to be fixed in the accommodating groove 82 . the

Please refer to Fig. 8 to Fig. 10, which are the pin-type snap-lock type biaxial hinge device of the second embodiment of the present utility model, which is different from the above-mentioned first embodiment in that: 12 is provided with a cutout 122 communicating with the through hole 15, so that the cut surface 61 of the latch 60 fits the wall surface of the body 11, and the other cut surface 61 corresponds to the cutout 122 of the first connecting body 12; Instead of the two limiting and fixing pieces 701 and 702 of the first embodiment, the limiting and fixing piece 703 abuts against the first connecting body 12, so that the other cut surface 61 fits the wall of the limiting and fixing piece 703, and also has a reduced overall The function of the volume, and pivot holes 71 are respectively provided at the upper and lower ends of the limit fixing piece 703, and the side-by-side first mandrel 20 and the second mandrel 40 are also pivotally arranged on each side of the limit fixing piece 703. Pivot hole 71; In addition, stoppers 73 are respectively provided on the wall surfaces of the upper and lower ends of the limit fixing piece 703, which can also be connected with the first stop portion 21 of the first mandrel 20 and the second mandrel 40 respectively. The second stop portion 41 produces a stop function. the

In the second embodiment, although the main function is to reduce the overall volume, since the other cut surface 61 of the bolt 60 corresponds to the cutout 122 of the first connecting body 12, the utility model can also be adjusted by adjusting Make the size of this otch 122, make another tangent surface 61 and the position-limiting fixed piece 703 wall surface to form a fit state or an isolation state, and then reduce or increase the overall volume of the present utility model, contribute to be applicable to different type of electronic products. the

Although the utility model discloses preferred specific embodiments to achieve the above purpose, it is not intended to limit the structural features of the utility model. All conceivable changes or modifications are possible, and all are covered by the protection scope of the present utility model. the

Explanation of reference signs

10 connection bracket

11 Body

12 The first connector

121 Buckle slot

122 incisions

13 upper end

14 lower end

15 through holes

16 Second connector

161 connection hole

20 first mandrel

21 The first stop part

22 first shaft

23 The first fixed part

24 1st brake cam

25 The first elastic unit

26 first nut

30 The first engagement cam

31 The first engagement part

32 ring ditch

33 rubber grommet

40 second mandrel

41 Second stop part

42 Second rod part

43 The second fixed part

44 Second brake cam

45 Second elastic unit

46 Second Nut

50 Second engaging cam

51 Second engagement part

60 latch

61 Sections

611 concave part

62 straight face

701, 702, 703 limit fixed piece

71 pivot hole

72 Buckle part

73 stopper

80 Shell Case

81 Fixing parts

82 Storage tank

83 perforations. the

Claims (10)

1. A pin-type snap-lock type dual-axis hinge, including: A connection bracket, which includes a body and a first connection body, the first connection body is located on the wall of the body and between the upper and lower ends of the body, and the connection bracket is provided with a through hole passing through the first connection body; the first mandrel is pivoted on the upper end of the body; The first engaging cam is sleeved and engaged with the first mandrel and is located near the upper opening of the through hole, and at least one first engaging portion is provided on the peripheral side of the first engaging cam; a second mandrel parallel to the first mandrel, which is pivotally arranged at the lower end of the body; The second engagement cam is sleeved and engaged with the second mandrel and is located near the lower opening of the through hole, and at least one second engagement portion is provided on the peripheral side of the second engagement cam; and A bolt, which passes through the through hole of the connecting bracket, the upper and lower ends of the bolt respectively correspond to the first engaging portion and the second engaging portion, and the peripheral side of the bolt is provided with at least one fitable The cut surface of the wall surface makes the upper end of the bolt contact the peripheral side of the first engaging cam in the rotating state, and then the lower end of the bolt is correspondingly fitted into the second engaging part to lock the second engaging cam, or make the The upper end of the bolt is correspondingly fitted into the first engaging portion to lock the first engaging cam, and the lower end of the bolt contacts the peripheral side of the second engaging cam in a rotating state. the 2. The pin-type locking type biaxial hinge according to claim 1, wherein at least one cut surface of the bolt includes two cut surfaces, and each cut surface is cut from the upper end of the bolt to the lower end of the bolt , and recesses are formed on each cut surface, so that each cut surface is respectively attached to the wall surface of the body and the inner wall surface of the corresponding through hole. the 3. The pin-type snap-lock type biaxial hinge according to claim 1, characterized in that it also includes two limiting and fixing pieces, and each limiting and fixing piece is provided with a pivot hole and two buckle parts, Two buckle grooves are also provided on the peripheral side of the first connecting body, and the two buckle parts of each limiting and fixing piece are respectively buckled in each buckling groove, so that each limiting and fixing piece is respectively positioned on the first connecting body. The two opposite ends form a symmetrical shape, and the side-by-side first mandrel and second mandrel are respectively pivotally arranged in the pivot holes of each limiting and fixing piece. the 4. A pin-type locking type double-axis hinge, which includes: The connecting bracket includes a main body and a first connecting body, the first connecting body is located on the wall of the main body and between the upper and lower ends of the main body, the connecting bracket is provided with a through hole passing through the first connecting body, and the second connecting body A connecting body is provided with a cutout communicating with the through hole; the first mandrel is pivoted on the upper end of the body; The first engaging cam is sleeved and engaged on the first mandrel and is located near the upper opening of the through hole, and at least one first engaging portion is provided on the peripheral side of the first engaging cam; a second mandrel parallel to the first mandrel, which is pivotally arranged at the lower end of the body; The second engagement cam is sleeved and engaged with the second mandrel and is located near the lower opening of the through hole, and at least one second engagement portion is provided on the peripheral side of the second engagement cam; and A bolt, which passes through the through hole of the connecting bracket, the upper and lower ends of the bolt respectively correspond to the first engaging portion and the second engaging portion, and at least one fitable The cut surface of the wall surface makes the upper end of the bolt contact the peripheral side of the first engaging cam in the rotating state, and then the lower end of the bolt is correspondingly fitted into the second engaging part to lock the second engaging cam, or make the The upper end of the bolt is correspondingly fitted into the first engaging portion to lock the first engaging cam, and the lower end of the bolt contacts the peripheral side of the second engaging cam in a rotating state. the 5. The pin-type locking type biaxial hinge according to claim 4, wherein at least one cut surface of the bolt includes two cut surfaces, and each cut surface is cut from the upper end of the bolt to the lower end of the bolt , and recesses are formed on each cut surface, so that one cut surface of the plug fits a wall surface of the body, and the other cut surface corresponds to the cutout of the first connecting body. the 6. The pin-type snap-lock type biaxial hinge according to claim 4, characterized in that it also includes a limit fixing piece that abuts against the first connecting body, and the upper and lower ends of the limit fixing piece are respectively provided with There are pivot holes, and the side-by-side first and second spindles are respectively pivoted in the pivot holes of the limiting and fixing piece. the 7. The pin-type latching double-axis hinge according to claim 1 or 4, wherein at least one cut surface of the bolt includes two cut surfaces, and the circumference of the bolt between its upper and lower ends There are also two straight surfaces on the side, and each flat surface is alternately adjacent to each cut surface. the 8. The pin-type latching double-axis hinge according to claim 1 or 4, characterized in that, the first engaging part is a notch and penetrates through the two wheel surfaces of the first engaging cam, and the first engaging cam The second engaging part is a gap and runs through the two wheel surfaces of the second engaging cam, and is provided with a ring groove and a rubber sleeve positioned on the ring groove on the peripheral side of the first engaging cam and the peripheral side of the second engaging cam ring. the 9. The pin-type locking type biaxial hinge according to claim 8, characterized in that each notch is shallower than each ring groove, so that each rubber collar is respectively embedded in each ring groove and respectively placed on the first ring groove. The first engaging portion and the second engaging portion form a buffer layer. the 10. The pin-type lock-type biaxial hinge according to claim 1 or 4, characterized in that it also includes a shell and a fixing piece, and the opposite ends of the shell are respectively provided with accommodating grooves and communicating with the The perforation of the accommodating tank is provided with a second connecting body on the opposite wall of the body and corresponding to the first connecting body. The second connecting body is provided with a connecting hole. The fixing member passes through the through hole of the shell and connects the second Connector hole. the

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