CN217085616U - Leather sheath keyboard - Google Patents

Abstract

The utility model relates to a leather sheath keyboard. This leather sheath keyboard includes: the keyboard comprises a keyboard (100), a rotating shaft assembly (101), a first section of cover plate (102) used for detachably fixing a tablet personal computer (105), a second section of cover plate (103) and a hinge (104); the rotating shaft assembly (101) is fixedly connected with the top end of the keyboard (100) and the lower end of the second section cover plate (103) through the main body (11) of the first lock accessory (1) and the body (21) of the second lock accessory (2) respectively, and the upper end of the second section cover plate (103) is pivoted to the lower end of the first section cover plate (102) through a hinge (104). The leather sheath keyboard of the utility model can be matched with a tablet computer to realize two-in-one, and can be separated from each other, thereby being convenient for carrying and operation; the pivot subassembly is as the fulcrum in the middle of it, can play the key connection effect of accepting the keyboard and supporting the panel computer, can be applied to a plurality of angles and multiple scene moreover and use.

Description

Leather sheath keyboard

Technical Field

The utility model relates to a keyboard technical field especially relates to a leather sheath keyboard.

Background

The tablet computer generally adopts the touch screen thereof as basic input equipment, and in order to improve the typing experience, people often can carry out input by connecting an external keyboard. The leather sheath of the tablet personal computer is a protective sleeve designed for protecting the tablet personal computer, and in order to be convenient for the tablet personal computer to input and play a role in protecting the tablet personal computer, leather sheath keyboards for the tablet personal computer appear on the market.

However, when the existing leather sheath keyboard supports the tablet personal computer, the supporting mode is generally adopted by folding the leather sheath or connecting the bracket on the leather sheath, the supporting angle cannot be changed by the two supporting modes, the use is not flexible enough, and the ever-increasing use requirements of people cannot be met. And they all have a common disadvantage in that, since the tablet computer is thin and thin, the internal space is compact, and the adsorption between the tablet computer and the holster keyboard is weak, the tablet computer may come off the holster keyboard when opened from a closed state.

In order to change the angle between the tablet computer and the keyboard connected with the tablet computer, the keyboard part and the tablet part are generally connected through a special rotating shaft, the rotating shaft is applied to the leather sheath cover, the installation space is limited, the rotating shaft is of a hinge structure which is similar to a hinge structure applied to doors and windows and does not have the functions of self-locking, limiting and the like, and the use experience is poor.

It is urgently needed to provide a leather sheath keyboard which is greatly convenient for a user to operate, can be matched with a tablet personal computer for use, realizes two-in-one of the tablet personal computer and the leather sheath keyboard, and has the characteristics of respective separation, convenience in carrying and convenience in operation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a leather sheath keyboard is convenient for change the angle between panel computer and the keyboard rather than being connected to be applied to a plurality of angles and multiple scene and use, the user operation of greatly making things convenient for.

In order to achieve the purpose, the utility model provides a leather sheath keyboard, which comprises a keyboard, a rotating shaft component, a first section cover plate, a second section cover plate and a hinge, wherein the first section cover plate and the second section cover plate are used for detachably fixing a tablet computer;

the pivot subassembly includes: the lock comprises a first lock accessory, a second lock accessory and two connecting pieces;

the first lock accessory comprises a main body and two convex shaft supports arranged on one side of the main body, and a concave connecting area is defined between the two shaft supports by the main body; a through hole is formed in the shaft support; the second locking accessory comprises a body and a connecting part extending and protruding from one side of the body, and two ends of the connecting part are respectively provided with a shaft hole; the connecting part extends into the connecting area;

the connecting piece comprises a rotating shaft and a shaft sleeve capable of rotating relative to the rotating shaft; the rotating shaft penetrates through the through hole and enters the shaft hole;

one end of the rotating shaft, which is far away from the second locking accessory, is fixedly connected with the inner wall of the through hole, and the shaft sleeve is fixedly connected with the inner wall of the shaft hole; so that the relative rotation of the second locking accessory and the first locking accessory is realized through the matching of the rotating shaft and the shaft sleeve;

the pivot subassembly is through the main part of first lock annex, the body of second lock annex fixed connection keyboard's top and the lower extreme of second section apron respectively, the upper end of second section apron is through the hinge pivot to the lower extreme of first section apron.

The shaft sleeve is in interference fit with the inner wall of the shaft hole, and the rotating shaft is in interference fit with the inner wall of the through hole.

The decorative piece is inserted into the through hole, so that the connecting piece inside is shielded.

The rotating shaft comprises a mounting shaft and a rotating shaft connected to one end of the mounting shaft; the mounting shaft is immersed in the through hole, and the rotating shaft extends into the shaft hole; one end of the rotating shaft, which is close to the mounting shaft, is matched with the shaft sleeve.

The connecting piece also comprises a nut arranged at one end of the rotating shaft far away from the mounting shaft, a plurality of elastic sheets arranged on the rotating shaft and positioned between the shaft sleeve and the nut, and a flat gasket arranged on the rotating shaft and positioned between the elastic sheets and the nut;

the spring piece is used for providing damping force when the second lock accessory rotates relative to the first lock accessory.

Two ends of the main body corresponding to the connecting area are respectively provided with a limiting part and a limiting bulge; the second lock accessory further comprises a stopping part positioned at the junction of the body and the connecting part;

when the angle between the second lock accessory and the first lock accessory is a first angle, the body abuts against the limiting part, so that the second lock accessory cannot rotate towards the direction close to the first lock accessory, and the limiting effect is achieved;

when the angle between the second lock accessory and the first lock accessory is a second angle, the stopping part is abutted against the limiting protrusion, so that the second lock accessory cannot rotate towards the direction far away from the first lock accessory, and the limiting effect is achieved.

The connecting piece also comprises a cam sheet which is arranged on the rotating shaft and is positioned between the shaft sleeve and the elastic sheet; one end of the cam piece facing the shaft sleeve is provided with two bulges, and the shaft sleeve is correspondingly provided with two pits; the two bulges are respectively matched with the two pits, and the matched positions respectively correspond to the included angle between the second lock accessory and the first lock accessory, which is a first angle and a second angle, so that the rotation self-locking of the second lock accessory and the first lock accessory is realized.

The depth of the pit corresponding to the included angle between the second lock accessory and the first lock accessory is smaller than the depth of the pit corresponding to the included angle when the included angle is the second angle, and the corresponding convex thickness of the included angle between the second lock accessory and the first lock accessory is smaller than the corresponding convex thickness of the included angle when the included angle is the second angle.

The first angle is 0 degree, the second angle is about 75 degrees, and therefore the relative rotation angle range of the second locking accessory and the first locking accessory is about 0-75 degrees.

And under the cover closing and containing state, the angle between the second lock accessory and the first lock accessory is 0 degree, and the front face of the tablet personal computer fixed on the first section of cover plate is covered with the front face of the keyboard.

In a first use state, the angle between the second lock accessory and the first lock accessory is 0 degree, the first section of cover plate is turned upwards for 180 degrees relative to the second section of cover plate, and the front face of the tablet personal computer fixed on the first section of cover plate is parallel to the front face of the keyboard.

In a second use state, the angle between the second locking part and the first locking part is about 75 degrees, and the first section of cover plate is turned upwards relative to the second section of cover plate to enable the front face of the tablet computer fixed on the first section of cover plate to be about 125 degrees with the front face of the keyboard.

In a third use state, the angle between the second locking part and the first locking part is about 75 degrees, and the first section of cover plate is turned upwards relative to the second section of cover plate to enable the front face of the tablet computer fixed on the first section of cover plate to be about 150 degrees with the front face of the keyboard.

The leather sheath keyboard of the utility model can be matched with a tablet computer to realize two-in-one, and can be separated from each other, thereby being convenient for carrying and operation; the pivot subassembly is as the fulcrum in the middle of it, can play the key connection effect of accepting the keyboard and supporting the panel computer, can be applied to a plurality of angles and multiple scene moreover and use.

Drawings

For a better understanding of the features and technical content of the present invention, reference should be made to the following detailed description of the present invention and accompanying drawings, which are provided for the purpose of illustration and description and are not intended to limit the present invention.

In the drawings, there is shown in the drawings,

FIG. 1 is a perspective view of a rotating shaft assembly of a preferred embodiment of the leather sheath keyboard of the present invention;

FIG. 2 is an exploded view of the spindle assembly of FIG. 1;

FIG. 3 is a top view of the spindle assembly of FIG. 1;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

FIG. 5 is a partial enlarged view of the portion B in FIG. 4;

FIG. 6 is an enlarged view of a portion of FIG. 4 at C;

FIG. 7 is a perspective view of a connector of the spindle assembly of FIG. 1;

FIG. 8 is an exploded view of the connector of FIG. 7;

FIG. 9 is a side view of the spindle assembly of FIG. 1 at an angle of 0 degrees between the second lock attachment and the first lock attachment;

FIG. 10 is a side view of the spindle assembly of FIG. 1 at an angle of 75 degrees between the second lock attachment and the first lock attachment;

FIG. 11 is a perspective view of the spindle assembly of FIG. 1 at an angle of 75 degrees between the second lock attachment and the first lock attachment;

FIG. 12 is an enlarged view of a portion of FIG. 11 at D;

FIG. 13 is a perspective view of another angle of the coupler of the spindle assembly of FIG. 1;

FIG. 14 is an enlarged view of a portion of FIG. 13 at E;

FIG. 15A is a perspective view of a preferred embodiment of the leather sheath keyboard of the present invention in a closed, stowed position;

FIG. 15B is a perspective view of the holster keyboard of FIG. 15A in a closed, stowed position with the tablet computer;

FIG. 16A is a side view of a preferred embodiment of the holster keyboard in a first use configuration;

FIG. 16B is a perspective view of the holster keyboard of FIG. 16A in a first use configuration;

FIG. 16C is a side view of the holster keyboard of FIG. 16A in a first use position with a tablet computer;

FIG. 16D is a perspective view of the holster keyboard of FIG. 16A in a first use position with a tablet computer;

FIG. 17A is a perspective view of a preferred embodiment of the holster keyboard in a second use position;

FIG. 17B is a side view of the holster keyboard of FIG. 17A in a second use configuration;

FIG. 17C is a perspective view of the holster keyboard of FIG. 17A in a second use configuration with a tablet computer;

FIG. 17D is a side view of the holster keyboard of FIG. 17A in a second use configuration with a tablet computer;

FIG. 18A is a perspective view of a preferred embodiment of the leather sheath keyboard of the present invention in a third operational state;

FIG. 18B is a side view of the holster keyboard of FIG. 18A in a third use configuration;

FIG. 18C is a perspective view of the holster keyboard of FIG. 18A in a third use state with a tablet computer;

fig. 18D is a side view of the holster keyboard of fig. 18A in a third use state with a tablet computer.

Detailed Description

To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Referring to fig. 1 to 14 and fig. 17A to 17D, a preferred embodiment of the leather sheath keyboard of the present invention mainly includes: the keyboard 100, the pivot assembly 101, the first cover plate 102 and the second cover plate 103 for detachably fixing the tablet computer 105, and the hinge 104, the pivot assembly 101 adopted in the preferred embodiment mainly includes: a first lock accessory 1, a second lock accessory 2 and two connecting pieces 3. The rotating shaft assembly 101 is fixedly connected to the top end of the keyboard 100 and the lower end of the second section cover plate 103 through the main body 11 of the first lock accessory 1 and the body 21 of the second lock accessory 2, and the upper end of the second section cover plate 103 is pivoted to the lower end of the first section cover plate 102 through a hinge 104. The keyboard 100 of the holster keyboard may adopt a configuration that is common in the market, for example, including a touch pad and a bluetooth module, and may also adopt a targeted configuration according to the tablet computer 105 to be collocated. The fixing manner of the keyboard 100 and the rotating shaft assembly 101 may be locking screws or glue fixing manner. First section cover plate 102 can be designed to be assembled with tablet computer 105 in an easily detachable manner, such as providing a magnetic device on first section cover plate 102 to magnetically attract tablet computer 105, or providing a rim on first section cover plate 102 to enable tablet computer 105 to be inserted into first section cover plate 102. The hinge 104 may be a conventional hinge rolling type hinge structure, and a limiting structure may be preset as required.

The leather sheath keyboard of the utility model can be matched with a tablet computer to realize two-in-one and separate from each other, and is convenient to carry and operate; the pivot subassembly of it is the fulcrum in the middle of, can play the key connection effect of accepting the keyboard and supporting the panel computer.

As shown in fig. 1 and 2, the first lock accessory 1 includes a main body 11 and two protruding shaft holders 12 disposed opposite to one side of the main body 11, and the main body 11 defines a recessed connection area 112 between the two shaft holders 12. The shaft support 12 is provided with a through hole 121 therein.

The second locking accessory 2 comprises a body 21 and a connecting portion 22 extending from one side of the body 21, wherein two ends of the connecting portion 22 are respectively provided with a shaft hole 221.

The connecting portion 22 extends into the connecting region 112.

As shown in fig. 3, 4 and 8, the connecting member 3 includes a rotating shaft 31 and a sleeve 32 capable of rotating relative to the rotating shaft 31. The rotating shaft 31 passes through the through-hole 121 and enters the shaft hole 221.

One end of the rotating shaft 31, which is far away from the second locking accessory 2, is fixedly connected with the inner wall of the through hole 121, and the shaft sleeve 32 is fixedly connected with the inner wall of the shaft hole 221, so that the relative rotation of the second locking accessory 2 and the first locking accessory 1 is realized through the matching of the rotating shaft 31 and the shaft sleeve 32.

Optionally, the shaft sleeve 32 is in interference fit with the inner wall of the shaft hole 221, and the rotating shaft 31 is in interference fit with the inner wall of the through hole 121.

Specifically, the rotating shaft assembly further comprises two decorating parts 5, and the decorating parts 5 are inserted into the through holes 121, so that the connecting parts 3 inside are shielded, and the effect of decorating and beautifying is achieved.

The rotating shaft 31 includes a mounting shaft 312 and a rotating shaft 314 connected to one end of the mounting shaft 312. The mounting shaft 312 is inserted into the through hole 121, and the rotating shaft 314 is inserted into the shaft hole 221. The end of the shaft 314 adjacent the mounting shaft 312 engages the boss 32.

Preferably, the mounting shaft 312 and the rotating shaft 314 are integrally formed.

As shown in fig. 7, 8 and 13, and referring to fig. 5 and 6, the connecting member 3 further includes a nut 33 mounted on an end of the rotating shaft 314 away from the mounting shaft 312, a plurality of resilient pieces 34 mounted on the rotating shaft 314 and located between the shaft sleeve 32 and the nut 33, and a flat washer 35 mounted on the rotating shaft 314 and located between the resilient pieces 34 and the nut 33, wherein the resilient pieces 34 are used for providing a damping force during the rotation of the second lock attachment 2 relative to the first lock attachment 1, and the magnitude of the damping force provided by the resilient pieces 34 can be adjusted by adjusting the tightness of the nut 33.

The rotating shaft assembly 101 is provided with a limiting structure so that the first locking accessory 1 and the second locking accessory 2 can only rotate relatively between a first angle and a second angle limited by the limiting structure.

The two ends of the main body 11 corresponding to the connection region 112 are respectively provided with a limiting portion 114 and a limiting protrusion 116. The second lock attachment 2 further comprises a stop 23 at the interface of the body 21 and the connecting portion 22.

In this embodiment, when the first angle between the second locking part 2 and the first locking part 1 is 0 degrees (at this time, as shown in fig. 9, the body 21 of the second locking part 2 and the main body 11 of the first locking part 1 are parallel to each other), the body 21 abuts against the limiting part 114, so that the second locking part 2 cannot rotate in a direction approaching the first locking part 1, and the limiting function is achieved.

The second angle between the second locking accessory 2 and the first locking accessory 1 may be about 75 degrees (at this time, as shown in fig. 10 and 11, the body 21 of the second locking accessory 2 forms a 75-degree included angle with the main body 11 of the first locking accessory 1), referring to fig. 12, the stopping portion 23 abuts against the limiting protrusion 116, so that the second locking accessory 2 cannot rotate in a direction away from the first locking accessory 1, and the limiting function is achieved. The second angle can also be preset to other values according to actual needs.

Thus, the second lock attachment 2 and the first lock attachment 1 rotate relatively in an angle range of 0 to 75 degrees. I.e. the minimum angle between the second lock attachment 2 and the first lock attachment 1 is 0 degrees and the maximum angle is 75 degrees.

Further, the connecting element 3 further includes a cam piece 36 mounted on the rotating shaft 314 and located between the shaft sleeve 32 and the elastic sheet 34, two protrusions 361 are disposed at one end of the cam piece 36 facing the shaft sleeve 32, the shaft sleeve 32 is correspondingly provided with two recesses 321, the two protrusions 361 and the two recesses 321 are respectively matched, and the matched positions just correspond to the minimum angle and the maximum angle respectively, so that the rotation self-locking of the second locking part 2 and the first locking part 1 at the minimum angle and the maximum angle respectively is realized.

Therefore, in the rotating process, the self-locking and limiting protection effects at the minimum angle and the maximum angle between the second locking part 2 and the first locking part 1 can be realized, and the operation of a user is facilitated.

Preferably, in order to provide a comfortable experience for the user when turning the second locking accessory 2, please refer to fig. 13 and 14, the depth of the dimple 321 corresponding to the smallest angle is smaller than the depth of the dimple 321 corresponding to the largest angle, and accordingly, the thickness of the protrusion 361 corresponding to the smallest angle is smaller than the thickness of the protrusion 361 corresponding to the largest angle (as shown in fig. 14, the upper protrusion 361 and dimple 321 correspond to the largest angle of 75 degrees, and the lower protrusion 361 and dimple 321 correspond to the smallest angle of 0 degrees). So that at the smallest angle the self-locking force is smaller and at the largest angle the self-locking force is larger, so that the second lock attachment 2 can support a heavier component.

The utility model discloses an in-process is opened at pivot subassembly 101 (angle between second lock annex 2 and the first lock annex 1 at this moment from 0 crescent to 75 degrees) to auto-lock and limit structure's setting, can be according to demand adjusting nut to the damping force (torsion when rotating promptly) size of adjusting the shell fragment lets the user can easily open. When the lock is opened to the highest point (at the moment, the angle between the second lock accessory 2 and the first lock accessory 1 is 75 degrees), the lock has strong self-locking force, and can support the whole weight of a flat plate (such as an iPad) of 10-12 inches. Simultaneously, the rotating shaft assembly has a limiting protection function at 0 degree and 75 degrees, and the phenomenon that the rotating shaft assembly is damaged due to overlarge operation force of a user can be prevented.

The utility model discloses a when leather sheath keyboard collocation panel computer used, with the first lock annex connection keyboard of the pivot subassembly of leather sheath keyboard, the second lock annex is connected with the panel computer, and this pivot subassembly can play the effect of accepting the keyboard and supporting the flat board, can be applied to a plurality of angles and multiple scene.

Referring to fig. 15A and 15B, in the closed storage state, the angle between the second locking component 2 and the first locking component 1 is 0 degree, and the front surface of the tablet pc 105 fixed on the first-stage cover plate 102 and the front surface of the keyboard 100 are closed together, so that the whole body is in the storage state. When the angle between the second lock accessory 2 and the first lock accessory 1 is 0 degree, the portable keyboard has slight closing self-locking, and the keyboard 100 and the tablet computer 105 are enabled to be two-in-one without opening, but the self-locking force is not large, so that the portable keyboard is very convenient for a user to open.

Referring to fig. 16A to 16D, in the first use state, the angle between the second locking part 2 and the first locking part 1 is 0 degree, the first section of cover plate 102 is turned upwards by 180 degrees relative to the second section of cover plate 103, and the front surface of the tablet pc 105 fixed on the first section of cover plate 102 is parallel to the front surface of the keyboard 100. In this state, by folding the first section of cover plate 102, the tablet computer 105 can be used alone by folding only the tablet computer 105 without separating the tablet computer 105 from the keyboard 100, so that the operator can have a quick and comfortable experience.

Referring to fig. 17A to 17D, in the second use state, the angle between the second locking part 2 and the first locking part 1 is about 75 degrees, and the first section of cover plate 102 is folded upwards relative to the second section of cover plate 103 to make the front surface of the tablet computer 105 fixed on the first section of cover plate 102 and the front surface of the keyboard 100 form about 125 degrees. At the 75-degree opening highest point state, the rotating shaft assembly 101 has strong supporting self-locking force in the 75-degree rotating state, can support the use of large-size IPAD tablet personal computers such as 12.9 inches, and the like, and is designed to be a normal visual angle situation of about 125 degrees from the whole through the preset limiting structure of the hinge 104 so as to adapt to the user to watch the tablet personal computer 105, and other suitable angles can be selected to adapt to the user through the design of adjusting the preset limiting structure of the hinge 104.

Referring to fig. 18A to 18D, in the third use state, the angle between the second lock accessory 2 and the first lock accessory 1 is about 75 degrees, after the rotation shaft assembly 101 is self-locked, the first section cover plate 102 is turned upwards relative to the second section cover plate 103 to make the front surface of the tablet computer 105 fixed on the first section cover plate 102 and the front surface of the keyboard 100 form about 150 degrees, and at this time, the presented 150 degrees state is determined by the length of the first section cover plate 102 and the angle of the rotation shaft assembly 101 (which is in 75 degrees self-locking support), so that the states of other angles can be presented by adjusting the length of the first section cover plate 102 or the angle of the rotation shaft assembly 101 in advance. At this time, the tablet computer 105 is turned over to the opposite side of the user on the front side of the keyboard 100, so that the opposite side can see the content presented in the tablet computer 105, the user of the keyboard 100 can conveniently and quickly show the tablet computer 105 to the opposite side, and the functions of quickly reading and understanding the content presented by the tablet computer 105 and realizing humanized communication can be achieved.

In summary, the leather sheath keyboard of the utility model can be matched with a tablet computer to realize two-in-one, and can be separated from each other, thereby taking convenience in carrying and operation into consideration; the pivot subassembly is as the fulcrum in the middle of it, can play the key connection effect of accepting the keyboard and supporting the panel computer, can be applied to a plurality of angles and multiple scene moreover and use.

From the above, it is obvious to those skilled in the art that various other changes and modifications can be made according to the technical solution and the technical idea of the present invention, and all such changes and modifications should fall within the protection scope of the claims of the present invention.

Claims (10)

1. A holster keyboard, comprising: the keyboard comprises a keyboard (100), a rotating shaft component (101), a first section of cover plate (102) used for detachably fixing a tablet personal computer (105), a second section of cover plate (103) and a hinge (104);

the rotating shaft component (101) comprises a first lock accessory (1), a second lock accessory (2) and two connecting pieces (3);

the first lock accessory (1) comprises a main body (11) and two convex shaft supports (12) arranged on one side of the main body (11) oppositely, and the main body (11) defines a concave connecting area (112) between the two shaft supports (12); a through hole (121) is arranged in the shaft support (12); the second lock accessory (2) comprises a body (21) and a connecting part (22) extending and protruding from one side of the body (21), and two ends of the connecting part (22) are respectively provided with a shaft hole (221); the connecting portion (22) extends into the connecting region (112);

the connecting piece (3) comprises a rotating shaft (31) and a shaft sleeve (32) capable of rotating relative to the rotating shaft (31); the rotating shaft (31) penetrates through the through hole (121) and enters the shaft hole (221);

one end of the rotating shaft (31) far away from the second locking accessory (2) is fixedly connected with the inner wall of the through hole (121), and the shaft sleeve (32) is fixedly connected with the inner wall of the shaft hole (221); so that the relative rotation of the second lock accessory (2) and the first lock accessory (1) is realized through the matching of the rotating shaft (31) and the shaft sleeve (32);

the rotating shaft assembly (101) is fixedly connected with the top end of the keyboard (100) and the lower end of the second section cover plate (103) through the main body (11) of the first lock accessory (1) and the body (21) of the second lock accessory (2) respectively, and the upper end of the second section cover plate (103) is pivoted to the lower end of the first section cover plate (102) through a hinge (104).

2. The holster keyboard according to claim 1, wherein the shaft (31) includes a mounting shaft (312) and a rotating shaft (314) coupled to an end of the mounting shaft (312); the mounting shaft (312) is immersed in the through hole (121), and the rotating shaft (314) extends into the shaft hole (221); one end of the rotating shaft (314) close to the mounting shaft (312) is matched with the shaft sleeve (32).

3. The holster keyboard according to claim 2, wherein the connecting member (3) further comprises a nut (33) mounted on an end of the rotary shaft (314) remote from the mounting shaft (312), a plurality of resilient tabs (34) mounted on the rotary shaft (314) between the shaft housing (32) and the nut (33), and a flat washer (35) mounted on the rotary shaft (314) between the resilient tabs (34) and the nut (33);

the elastic sheet (34) is used for providing damping force during the rotation process of the second lock accessory (2) relative to the first lock accessory (1).

4. A holster keyboard according to claim 3, wherein the connector (3) further comprises a cam plate (36) mounted on the rotary shaft (314) between the sleeve (32) and the resilient plate (34); one end of the cam piece (36) facing the shaft sleeve (32) is provided with two protrusions (361), and the shaft sleeve (32) is correspondingly provided with two pits (321); the two bulges (361) are matched with the two pits (321) respectively, and the matched positions correspond to the included angle between the second lock accessory (2) and the first lock accessory (1) which is a first angle and a second angle respectively, so that the rotation self-locking of the second lock accessory (2) and the first lock accessory (1) is realized.

5. The leather sheath keyboard as recited in claim 4, wherein the two ends of the main body (11) corresponding to the connecting area (112) are respectively provided with a limiting part (114) and a limiting bulge (116); the second lock attachment (2) further comprises a stop (23) located at the interface of the body (21) and the connecting portion (22);

when the angle between the second lock accessory (2) and the first lock accessory (1) is a first angle, the body (21) abuts against the limiting part (114), so that the second lock accessory (2) cannot rotate towards the direction close to the first lock accessory (1) to achieve the limiting effect;

when the angle between the second locking accessory (2) and the first locking accessory (1) is a second angle, the stopping part (23) abuts against the limiting protrusion (116), so that the second locking accessory (2) cannot rotate in the direction away from the first locking accessory (1) to achieve the limiting effect.

6. The holster keyboard according to claim 4, wherein the first angle is 0 degrees and the second angle is approximately 75 degrees.

7. The holster keyboard according to claim 6, wherein in the closed storage state, the angle between the second locking member (2) and the first locking member (1) is 0 degree, and the front of the tablet computer (105) fixed on the first section of the cover plate (102) is closed with the front of the keyboard (100).

8. The holster keyboard according to claim 6, wherein in the first use state, the angle between the second lock attachment (2) and the first lock attachment (1) is 0 degree, the first section of the cover plate (102) is turned up 180 degrees relative to the second section of the cover plate (103), and the front face of the tablet computer (105) fixed on the first section of the cover plate (102) is parallel to the front face of the keyboard (100).

9. The holster keyboard according to claim 6, wherein in the second use position, the angle between the second lock attachment (2) and the first lock attachment (1) is about 75 degrees, and the first section of the cover plate (102) is folded upward relative to the second section of the cover plate (103) to bring the front face of the tablet computer (105) fixed to the first section of the cover plate (102) to about 125 degrees with respect to the front face of the keyboard (100).

10. The holster keyboard according to claim 6, wherein in the third use position, the second lock attachment (2) is at an angle of about 75 degrees to the first lock attachment (1), and the first section of the cover plate (102) is folded upwardly relative to the second section of the cover plate (103) to bring the front of the tablet computer (105) secured to the first section of the cover plate (102) at about 150 degrees to the front of the keyboard (100).

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