# Patent

## Title
Protection cover support seat structure for tablet display apparatus

## Abstract

A protection cover support seat structure for tablet display apparatus includes a support member, a display adjustment seat and a connection assembly. The support member has a first end section and a second end section opposite to the first end section. The display adjustment seat is pivotally connected to the first end section via at least one first pivot member. An engagement locating assembly with elastic engagement function is disposed between the display adjustment seat and the connection assembly. One side of the connection assembly is connectable with the tablet display apparatus. The second end section is pivotally connected with a base seat, which is further pivotally connected with a board body. Accordingly, the tablet display apparatus can be co-used with the board body and rotated and tilted by different angles and supported in an inclined position in adaptation to different use situations and requirements.

## Background
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to a protection cover support seat structure for tablet display apparatus, and more particularly to a protection cover support seat structure for tablet display apparatus, which is connectable with a keyboard and by means of which a user can tilt and rotate the tablet display apparatus by different angles to adjust the angular position of the screen of the tablet display apparatus in adaptation to different viewing situations.
2. Description of the Related Art
There are various conventional support structures and protection jacket structures for tablet computers. Such prior art discloses a support structure for tablet computer. The support structure is mainly composed of a fixing board body and a support member pivotally connected with the fixing board body. The fixing board body includes a front cover and a rear cover connected with the front cover. The rear cover has multiple locating members extending from the rear cover to the front cover. The rear cover is connected with multiple holding boards. Each holding board is formed with a guide slot for the locating member to slide along. The locating member provides a restriction effect for the guide slot so as to limit the holding board to move within a certain range. In addition, an extensible member is disposed at the guide slot for the holding board to abut against and hold the tablet computer. Accordingly, by means of the extensible members, the holding boards can securely hold different sizes of tablet computers. However, the above structure can only hold and support the tablet computer in a fixed angular viewing position. Therefore, the application of the support structure cannot be diversified to meet various use requirements.
Another prior art discloses a support box structure for tablet computer. The support box structure includes a box body with a shutter box cover. The box body has a receiving cavity in which a Bluetooth wireless transmission keyboard can be snugly inserted. The box cover has an interlayer. A base shaft of the interlayer is pivotally connected with a support board. A rear shaft of the support board is pivotally connected with a support leg. When the box cover is stretched and horizontally rested, the support leg supports the support board to extend by an inclination for placing the tablet computer thereon. Accordingly, the tablet computer can be placed on a desktop and conveniently used in adaptation to the operation mode of a user who is familiar with solid keyboard. By means of such structure, the tablet computer can be supported by different inclination angles. However, the keyboard cannot be tilted to facilitate the operation. Moreover, it is still uneasy to operation the tablet computer to provide transverse display effect. As a result, the use of the tablet computer is still limited.
Further, another prior art discloses a protection jacket for tablet computer. The protection jacket includes an upper cover and a base seat. A second turn section is formed between the upper cover and the base seat, whereby the upper cover and the base seat can be folded onto each other. A first turn section is formed near the middle of the base seat, whereby the base seat can be folded by a certain angle. Several magnets are disposed in the upper cover at intervals. According to the above arrangement, the tablet computer can be affixed to the base seat. The iron core inbuilt and concealed in the periphery of the tablet computer and the magnets of the upper cover can attract each other. In addition, the first and second turn sections can be folded so that the iron core can be attracted by different magnets in different positions, whereby the viewing angle of the tablet computer can be adjusted. Moreover, the protection jacket serves to protect the tablet computer from being scraped. By means of the above structure, the tablet computer can be supported by different inclination angles. However, the protection jacket cannot be connected with a keyboard.
It is therefore tried by the applicant to provide a protection cover support seat structure for tablet display apparatus to overcome the shortcomings existing in the conventional support structures and protection jacket structures for tablet computers.
SUMMARY OF THE INVENTION
It is therefore a primary object of the present invention to provide a protection cover support seat structure for tablet display apparatus. By means of the protection cover support seat structure, a user can tilt and rotate the tablet display apparatus by different angles and locate the tablet display apparatus in different angular positions to diversify the application of the tablet display apparatus for meeting various viewing requirements.
It is a further object of the present invention to provide the above protection cover support seat structure for tablet display apparatus, which is connectable with an external board body such as a keyboard. The board body can be raised and supported in an inclined position to meet the ergonomic requirement and facilitate the use of the tablet display apparatus.
It is still a further object of the present invention to provide the above protection cover support seat structure for tablet display apparatus, in which the table display apparatus can overlap the board body so as to minimize the volume for easy storage or carriage and provide good protection effect.
To achieve the above and other objects, the protection cover support seat structure for tablet display apparatus of the present invention includes a support member, a display adjustment seat, a connection assembly, a base seat and a board body. The support member has a first end section and a second end section opposite to the first end section. The display adjustment seat is pivotally connected to the first end section of the support member via at least one first pivot member. The display adjustment seat is formed with a receiving section with an opening. At least one engagement locating member is disposed in the receiving section. The engagement locating member is constantly outward elastically pushed by a preset elastic member. The connection assembly is relatively rotatably connected to one side of the display adjustment seat, which side is formed with the receiving section. The connection assembly has a hollow section corresponding to the receiving section. An inner periphery of the hollow section is formed with multiple locating recesses for the engagement locating member to elastically engage in. The engagement locating member and the locating recess form an engagement locating assembly between the display adjustment seat and the connection assembly. The connection assembly is formed with a receiving space for receiving the tablet display apparatus. The base seat is pivotally connected to the second end section of the support member via a second pivot member with pivotally locating function. The board body is pivotally connected to one side of the base seat via a third pivot member with pivotally locating function, which side is distal from the support member.
In the above protection cover support seat structure for tablet display apparatus, the connection assembly includes a fixing seat. The receiving space is formed on the fixing seat.
In the above protection cover support seat structure for tablet display apparatus, the connection assembly further includes a retainer member. The hollow section is formed on the fixing seat. The fixing seat is connected to the display adjustment seat by means of the retainer member.
In the above protection cover support seat structure for tablet display apparatus, the connection assembly further includes a connection member. The hollow section is formed on the connection member. The connect ion member is connected to the display adjustment seat by means of a retainer member. The fixing seat is detachably connected to the connection member.
In the above protection cover support seat structure for tablet display apparatus, a first edge of the connection member is formed with at least one first locating section and a second edge of the connection member opposite to the first edge is formed with at least one second locating section. The fixing seat is formed with at least one first located section and at least one second located section corresponding to the first and second locating sections respectively.
In the above protection cover support seat structure for tablet display apparatus, the first and second locating sections are hook section and hook structure respectively, while the first and second located sections are located guide slot and engagement guide slot respectively.
In the above protection cover support seat structure for tablet display apparatus, the base seat is formed with a pivot dent for receiving the second end section of the support member. The outer periphery of the second end section is formed with an abutment section for abutting against a bottom face of the pivot dent in pivotal rotation of the support member.
In the above protection cover support seat structure for tablet display apparatus, at least one guide way is disposed on a periphery of the receiving section for guiding the engagement locating member to move along the guide way.
In the above protection cover support seat structure for tablet display apparatus, a locating section is disposed between the passage and the guide way for fixing one end of the elastic member. The other end of the elastic member serves to push the engagement locating member.
In the above protection cover support seat structure for tablet display apparatus, a bottom side of the receiving section is formed with at least one passage in communication with a backside of the receiving section. The first pivot member is disposed in the receiving section. The first pivot member has a pivot end with pivotally locating function. The pivot end passes through the passage to connect with the first end section of the support member.
In the above protection cover support seat structure for tablet display apparatus, the board body is connected with multiple press keys to form a keyboard structure.
The present invention can be best understood through the following description and accompanying drawings, wherein:



BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective partially assembled view of a first embodiment of the present invention;
FIG. 2 is a perspective exploded view of the display adjustment seat and the connection assembly of the first embodiment of the present invention;
FIG. 3 is a perspective exploded view of the board body, the base seat and the support member of the first embodiment of the present invention;
FIG. 4 is a perspective assembled view of the display adjustment seat of the first embodiment of the present invention, showing the internal structure of the display adjustment seat;
FIG. 5 shows that the engagement locating member of the angle adjustment seat of the first embodiment of the present invention is engaged in a predetermined locating recess in an initial position;
FIG. 6 is a perspective view showing the use of the tablet display apparatus according to FIG. 5;
FIG. 7 shows that the connection assembly of the first embodiment of the present invention is rotated to disengage the engagement locating member from the locating recess as shown in FIG. 5;
FIG. 8 is a perspective view showing the use of the tablet display apparatus, which is 90-degree rotated from the position of FIG. 6 to an upright position;
FIG. 9 is a side view showing the use of the tablet display apparatus, which is supported in an upright position;
FIG. 10 is a side view according to FIG. 9, showing the use of the tablet display apparatus, in which the base seat and the board body contains an angle;
FIG. 11 is a side view of the first embodiment of the present invention, showing the use of the tablet display apparatus, in which the fixing seat overlaps the board body with the screen of the tablet display apparatus facing upward;
FIG. 12 is a perspective exploded view of a second embodiment of the present invention;
FIG. 13 is a perspective partially assembled view of the second embodiment of the present invention;
FIG. 14 is a sectional view of the second embodiment of the present invention, showing that the connection member is detached from the fixing seat; and
FIG. 15 is a sectional view of the second embodiment of the present invention, showing that the fixing seat is assembled with the connection member.



DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Please refer to FIGS. 1 to 4. According to a first embodiment, the protection cover support seat structure for tablet display apparatus of the present invention includes a support member 1, a display adjustment seat 2, a connection assembly 3, a base seat 4 and a board body 5. The support member 1 has a first end section 11 and a second end section 12 opposite to the first end section 11. Two sides of the first end section 11 are respectively formed with two shaft holes 111. Two sides of the second end section 12 are respectively formed with two shaft holes 121. An outer periphery of the second end section 12 is formed with an abutment section 122.
A center of the display adjustment seat 2 is formed with a receiving section 21 with an opening. A bottom side of the receiving section 21 is formed with two transversely extending passage 211 in communication with a backside of the receiving section 21. Two guide ways 212 are respectively disposed on outer sides of the passages 211. A locating section 213 is disposed between each passage 211 and each guide way 212. Two first pivot members 22 are respectively disposed beside the passages 211. Each first pivot member 22 has a pivot end 221 with pivotally locating function. The pivot ends 221 respectively pass through the passages 211 to connect with the shaft holes 111 of the support member 1. Accordingly, the display adjustment seat 2 can be pivotally rotated and tilted around the first end section 11 of the support member 1 and located in a desired angular position. Two elastic members 23, (which can be coiled springs), are respectively arranged between the locating sections 213 and the guide ways 212. Each elastic member 23 has a first end affixed to the locating section 213 and a second end extending into the guide way 212 for constantly elastically urging an engagement locating member 24, (which can be a roller), to move outward.
The connection assembly 3 is composed of a fixing seat 31 and a retainer member 32. One side of the fixing seat 31 is formed with a receiving space 311 for receiving a tablet display apparatus 6 (such as a tablet computer or a cellular phone). The periphery of the receiving space 311 is formed with a protruding holding section 313 for locating the tablet display apparatus 6. A center of the fixing seat 31 (the receiving space 311) is formed with a hollow section 312 corresponding to the receiving section 21. An inner periphery of the hollow section 312 is formed with multiple locating recesses 314 arranged at predetermined angular intervals. The engagement locating members 24 can be elastically engaged in the locating recesses 314 (as shown in FIG. 4) to form an engagement locating assembly with elastically locating function. The retainer member 32 has an area larger than that of the hollow section 312 and is connected to one side of the fixing seat 31, which side is distal from the display adjustment seat 2. The retainer member 32 covers the hollow section 312 to prevent the first pivot members 22, the elastic members 23 and the engagement locating members 24 from outward loosening and detaching from the display adjustment seat 2. Also, the retainer member 32 serves to connect the fixing seat 31 onto the display adjustment seat 2, permitting the fixing seat 31 to be rotated relative to the display adjustment seat 2.
The base seat 4 has a pivot dent 42 for receiving the second end section 12 of the support member 1. Two second pivot members 41 with pivotally locating function are respectively disposed on two inner opposite sides of the pivot dent 42. The second pivot members 41 protrude from the inner opposite sides of the pivot dent 42 toward each other and are connectable in the shaft holes 121 of the support member 1. Accordingly, the support member 1 can be pivotally rotated relative to the base seat 4 and located in a desired angular position. Also, the abutment section 122 of the support member 1 serves to abut against a bottom face of the pivot dent 42 so as to restrict the pivotally rotational angle of the support member 1 relative to the base seat 4.
The board body 5 is pivotally connected to one side of the base seat 4 via multiple third pivot members 51 with pivotally locating function, which side is distal from the support member 1. In practice, the board body 5 can be an ordinary board body structure for resting articles thereon. Alternatively, the board body 5 can be connected with multiple press keys 52 to form a keyboard structure.
Please now refer to FIGS. 5 to 11. In use of the first embodiment of the present invention, the engagement locating members 24 of the display adjustment seat 2 are engaged in the locating recesses 314 formed on the periphery of the hollow section 312 of the fixing seat 31 as in an initial position (as shown in FIG. 5). Under such circumstance, the fixing seat 31 with the tablet display apparatus 6 is positioned in a transverse position (as shown in FIG. 6). When an external force is applied to the fixing seat 31 (or the tablet display apparatus 6) to rotate the fixing seat 31, the engagement locating members 24 twist the elastic members 23 and disengage from the original locating recesses 314 (as shown in FIG. 7) to move along the inner periphery of the hollow section 312 until the engagement locating members 24 are engaged and located in the other locating recesses 314. At this time, the fixing seat 31 is released from the external force, whereby the fixing seat 31 with the tablet display apparatus 6 is positioned in a non-transverse angular position. Accordingly, the tablet display apparatus 6 can be rotated by different angles and located in different angular positions in adaptation to different use situations and requirements. (FIG. 8 shows that the tablet display apparatus 6 is 90-degree rotated and positioned in a vertical position).
When not used and it is desired to store the tablet display apparatus 6, the support member 1 can be pivotally rotated to make the screen side of the tablet display apparatus 6 attach to and overlap the board body 5 so as to minimize the occupied room for easy storage or carriage and provide a protection effect for the screen of the tablet display apparatus 6.
When it is desired to use the tablet display apparatus 6 in a normal state, the support member 1 can be pivotally rotated in a reverse direction to make the tablet display apparatus 6 positioned in an upright position or tilted by a certain angle for a user to easily watch the screen. In the meantime, the angle contained between the board body 5 and the base seat 4 can be varied. For example, the board body 5 can solely contact a preset plane face (such as a desktop) with the base seat 4 and the support member 1 folded by a certain angle, whereby the tablet display apparatus 6 is supported in a suitable angular position for easy watch or operation (as shown in FIG. 9). Alternatively, the base seat 4 and the board body 5 can be folded by a certain angle to make the pivoted sections thereof rise from the plane face. In this case, the other sides of the base seat 4 and the board body 5, which sides are distal from the pivoted sections, contact the plane face in another supported state (as shown in FIG. 10).
Alternatively, the tablet display apparatus 6 can be totally reversely pivotally rotated around the first end section 11 of the support member 1. Then the support member 1 and the fixing seat 31 can be attached to the base seat 4 and the board body 5. In this case, the tablet display apparatus 6 is horizontally rested on the plane face with the screen facing upward in a ready state (as shown in FIG. 11).
Please refer to FIGS. 12 to 15, which show a second embodiment of the present invention. The second embodiment is derived from the first embodiment. According to the second embodiment, the present invention includes a connection assembly 7 and components of a board body 5, a base seat 4, a display adjustment seat 2 and a support member 1, which are identical to those of the first embodiment. The connection assembly 7 includes a fixing seat 73, a retainer member 72 and a connection member 71. A center of the connection member 71 is formed with a hollow section 711 corresponding to the receiving section 21. An inner periphery of the hollow section 711 is formed with multiple locating recesses 712 arranged at predetermined angular intervals. The engagement locating members 24 can be engaged and located in the locating recesses 712. A first edge of the connection member 71 is formed with multiple first locating sections 713 extending in the same direction. (The first locating sections 713 can be hook sections). A second edge of the connection member 71 opposite to the first edge is formed with multiple second locating sections 714 extending in the same direction. The second locating sections 714 have hook structures. The second edge is further formed with a raised shift section 715 for shifting the second locating sections 714.
The retainer member 72 has an area larger than that of the hollow section 711 and is connected to one side of the connection member 71, which side is distal from the display adjustment seat 2. The retainer member 72 covers the hollow section 711 to prevent the first pivot members 22, the elastic members 23 and the engagement locating members 24 from outward loosening and detaching from the display adjustment seat 2. Also, the retainer member 72 serves to connect the connection member 71 onto the display adjustment seat 2, permitting the connection member 71 to be rotated relative to the display adjustment seat 2.
One side of the fixing seat 73 is formed with a receiving space 731 for receiving a tablet display apparatus 6 (such as a tablet computer or a cellular phone). The periphery of the receiving space 731 is formed with a protruding holding section 732 for locating the tablet display apparatus 6. A first edge of the fixing seat 73 is formed with multiple first located sections 733 opposite to the receiving space 731, (which can be located guide slots). A second edge of the fixing seat 73 is formed with multiple second located sections 734 opposite to the receiving space 731, (which can be engagement guide slots). The first and second located sections 733, 734 correspond to the first and second locating sections 713, 714 of the connection member 71 respectively.
When assembled, the first locating sections 713 (hook sections) of the connection member 71 extend into the first located sections 733 (located guide slots) of the fixing seat 73, while the second locating sections 714 (hook structures) on the other edge of the connection member 71 are cooperatively inserted into the second located sections 734 (engagement guide slots). Under such circumstance, the connection member 71 is connected with the fixing seat 73 (as shown in FIG. 15). A user can apply a force to the raised shift section 715 to disengage the second locating sections 714 (hook structures) from the second located sections 734 (engagement guide slots) so as to separate the fixing seat 73 from the connection member 71 (as shown in FIG. 14). Accordingly, the connection assembly 7 is easy to assemble and disassemble.
In the second embodiment, only the connection assembly 7 is different from that of the first embodiment in structure, while the board body 5, the display adjustment seat 2, the base seat 4 and the support member 1 are identical to those components of the first embodiment in structure and connection manner and thus will not be repeatedly described hereinafter.
In conclusion, the protection cover support seat structure for tablet display apparatus of the present invention is connectable with a keyboard and enables a user to adjustably tilt and rotate the screen of the tablet computer by different angles.
The above embodiments are only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiments can be made without departing from the spirit of the present invention.

## Claims

1. A protection cover support seat structure for tablet display apparatus, comprising:
a support member having a first end section and a second end section opposite to the first end section; and
a display adjustment seat pivotally connected to the first end section of the support member via at least one first pivot member;
a connection assembly connected to the display adjustment seat, the connection assembly being relatively rotatably connected to one side of the display adjustment seat, the connection assembly displaceably engaging a plurality of engagement locating members each coupled in resiliently biased manner to the display adjustment seat;
a base seat pivotally connected to the second end section of the support member via a second pivot member; and
a board body pivotally connected to one side of the base seat via a third pivot member, said board body being inclinable with respect to said base seat responsive to pivoting about said third pivot member.

2. The protection cover support seat structure for tablet display apparatus as claimed in claim 1, wherein a resilient engagement locating assembly is disposed between the display adjustment seat and the connection assembly.

3. The protection cover support seat structure for tablet display apparatus as claimed in claim 2, wherein the plurality of engagement locating members each independently biased by a respective resilient member to engage a corresponding locating recess.

4. The protection cover support seat structure for tablet display apparatus as claimed in claim 1, wherein the connection assembly is formed with a receiving space for assembling with the tablet display apparatus.

5. The protection cover support seat structure for tablet display apparatus as claimed in claim 1, wherein the connection assembly includes a fixing seat having a receiving space formed therein.

6. The protection cover support seat structure for tablet display apparatus as claimed in claim 2, wherein the connection assembly includes a fixing seat having a receiving space formed therein.

7. The protection cover support seat structure for tablet display apparatus as claimed in claim 3, wherein the connection assembly includes a fixing seat having a receiving space formed therein.

8. The protection cover support seat structure for tablet display apparatus as claimed in claim 4, wherein the connection assembly includes a fixing seat, the receiving space being formed on the fixing seat.

9. The protection cover support seat structure for tablet display apparatus as claimed in claim 1, wherein the display adjustment seat is formed with a receiving section and the connection assembly is formed with a hollow section corresponding to the receiving section.

10. The protection cover support seat structure for tablet display apparatus as claimed in claim 2, wherein the display adjustment seat is formed with a receiving section and the connection assembly is formed with a hollow section corresponding to the receiving section.

11. The protection cover support seat structure for tablet display apparatus as claimed in claim 3, wherein the display adjustment seat is formed with a receiving section and the connection assembly is formed with a hollow section corresponding to the receiving section.

12. The protection cover support seat structure for tablet display apparatus as claimed in claim 4, wherein the display adjustment seat is formed with a receiving section and the connection assembly is formed with a hollow section corresponding to the receiving section.

13. The protection cover support seat structure for tablet display apparatus as claimed in claim 5, wherein the display adjustment seat is formed with a receiving section and the connection assembly is formed with a hollow section corresponding to the receiving section.

14. The protection cover support seat structure for tablet display apparatus as claimed in claim 9, wherein the connection assembly further includes a retainer member, the hollow section being formed on the fixing seat, the fixing seat being connected to the display adjustment seat by means of the retainer member.

15. The protection cover support seat structure for tablet display apparatus as claimed in claim 13, wherein the connection assembly further includes a retainer member, the hollow section being formed on the fixing seat, the fixing seat being connected to the display adjustment seat by means of the retainer member.

16. The protection cover support seat structure for tablet display apparatus as claimed in claim 9, wherein the connection assembly further includes a connection member, the hollow section being formed on the connection member, the connection member being connected to the display adjustment seat by means of a retainer member, the fixing seat being detachably connected to the connection member.

17. The protection cover support seat structure for tablet display apparatus as claimed in claim 13, wherein the connection assembly further includes a connection member, the hollow section being formed on the connection member, the connection member being connected to the display adjustment seat by means of a retainer member, the fixing seat being detachably connected to the connection member.

18. The protection cover support seat structure for tablet display apparatus as claimed in claim 16, wherein a first edge of the connection member is formed with at least one first locating section and a second edge of the connection member opposite to the first edge is formed with at least one second locating section, the fixing seat being formed with at least one first located section and at least one second located section corresponding to the first and second locating sections respectively.

19. The protection cover support seat structure for tablet display apparatus as claimed in claim 17, wherein a first edge of the connection member is formed with at least one first locating section and a second edge of the connection member opposite to the first edge is formed with at least one second locating section, the fixing seat being formed with at least one first located section and at least one second located section corresponding to the first and second locating sections respectively.

20. The protection cover support seat structure for tablet display apparatus as claimed in claim 18, wherein the first and second locating sections are hook section and hook structure respectively, while the first and second located sections are located guide slot and engagement guide slot respectively.

21. The protection cover support seat structure for tablet display apparatus as claimed in claim 19, wherein the first and second locating sections are hook section and hook structure respectively, while the first and second located sections are located guide slot and engagement guide slot respectively.

22. The protection cover support seat structure for tablet display apparatus as claimed in claim 9, wherein at least one guide way is disposed on a periphery of the receiving section for guiding the engagement locating member to move along the guide way.

23. The protection cover support seat structure for tablet display apparatus as claimed in claim 13, wherein at least one guide way is disposed on a periphery of the receiving section for guiding the engagement locating member to move along the guide way.

24. The protection cover support seat structure for tablet display apparatus as claimed in claim 9, wherein a bottom side of the receiving section is formed with at least one passage in communication with a backside of the receiving section, the first pivot member being disposed in the receiving section, the first pivot member having a pivot end with pivotally locating function, the pivot end passing through the passage to connect with the first end section of the support member.

25. The protection cover support seat structure for tablet display apparatus as claimed in claim 14, wherein a bottom side of the receiving section is formed with at least one passage in communication with a backside of the receiving section, the first pivot member being disposed in the receiving section, the first pivot member having a pivot end with pivotally locating function, the pivot end passing through the passage to connect with the first end section of the support member.

26. The protection cover support seat structure for tablet display apparatus as claimed in claim 16, wherein a bottom side of the receiving section is formed with at least one passage in communication with a backside of the receiving section, the first pivot member being disposed in the receiving section, the first pivot member having a pivot end with pivotally locating function, the pivot end passing through the passage to connect with the first end section of the support member.

27. The protection cover support seat structure for tablet display apparatus as claimed in claim 18, wherein a bottom side of the receiving section is formed with at least one passage in communication with a backside of the receiving section, the first pivot member being disposed in the receiving section, the first pivot member having a pivot end with pivotally locating function, the pivot end passing through the passage to connect with the first end section of the support member.

28. The protection cover support seat structure for tablet display apparatus as claimed in claim 25, wherein a locating section is disposed between the passage and the guide way for fixing one end of the elastic member, the other end of the elastic member serving to push the engagement locating member.

29. The protection cover support seat structure for tablet display apparatus as claimed in claim 26, wherein a locating section is disposed between the passage and the guide way for fixing one end of the elastic member, the other end of the elastic member serving to push the engagement locating member.

30. The protection cover support seat structure for tablet display apparatus as claimed in claim 27, wherein a locating section is disposed between the passage and the guide way for fixing one end of the elastic member, the other end of the elastic member serving to push the engagement locating member.

31. The protection cover support seat structure for tablet display apparatus as claimed in claim 1, wherein the base seat is formed with a pivot dent for receiving the second end section of the support member, an outer periphery of the second end section being formed with an abutment section for abutting against a bottom face of the pivot dent in pivotal rotation of the support member.

32. The protection cover support seat structure for tablet display apparatus as claimed in claim 5, wherein the base seat is formed with a pivot dent for receiving the second end section of the support member, an outer periphery of the second end section being formed with an abutment section for abutting against a bottom face of the pivot dent in pivotal rotation of the support member.

33. The protection cover support seat structure for tablet display apparatus as claimed in claim 9, wherein the base seat is formed with a pivot dent for receiving the second end section of the support member, an outer periphery of the second end section being formed with an abutment section for abutting against a bottom face of the pivot dent in pivotal rotation of the support member.

34. The protection cover support seat structure for tablet display apparatus as claimed in claim 22, wherein the base seat is formed with a pivot dent for receiving the second end section of the support member, an outer periphery of the second end section being formed with an abutment section for abutting against a bottom face of the pivot dent in pivotal rotation of the support member.

35. The protection cover support seat structure for tablet display apparatus as claimed in claim 24, wherein the base seat is formed with a pivot dent for receiving the second end section of the support member, an outer periphery of the second end section being formed with an abutment section for abutting against a bottom face of the pivot dent in pivotal rotation of the support member.

36. The protection cover support seat structure for tablet display apparatus as claimed in claim 28, wherein the base seat is formed with a pivot dent for receiving the second end section of the support member, an outer periphery of the second end section being formed with an abutment section for abutting against a bottom face of the pivot dent in pivotal rotation of the support member.

37. The protection cover support seat structure for tablet display apparatus as claimed in claim 1, wherein the board body is connected with multiple press keys to form a keyboard structure.

38. The protection cover support seat structure for tablet display apparatus as claimed in claim 5, wherein the board body is connected with multiple press keys to form a keyboard structure.

39. The protection cover support seat structure for tablet display apparatus as claimed in claim 9, wherein the board body is connected with multiple press keys to form a keyboard structure.

40. The protection cover support seat structure for tablet display apparatus as claimed in claim 22, wherein the board body is connected with multiple press keys to form a keyboard structure.

41. The protection cover support seat structure for tablet display apparatus as claimed in claim 24, wherein the board body is connected with multiple press keys to form a keyboard structure.

42. The protection cover support seat structure for tablet display apparatus as claimed in claim 28, wherein the board body is connected with multiple press keys to form a keyboard structure.

43. The protection cover support seat structure for tablet display apparatus as claimed in claim 31, wherein the board body is connected with multiple press keys to form a keyboard structure.