Portable literature reader

Abstract

The invention relates to the technical field of electronic readers, and discloses a portable literature reader which comprises an outer shell, a dustproof top cover, an electronic reading screen, a protective sleeve, a clamping mechanism, an adjustable grip, an inclined strut mechanism and a rotation stopping mechanism, the dustproof top cover covers the top of the outer shell, and the electronic reading screen is detachably fixed in the outer shell. A protective sleeve is fixedly installed on the left side in the outer shell and adheres to and is fixed to the outer shell through glue, the electronic reading screen is attached to the protective sleeve, a clamping mechanism used for clamping the electronic reading screen is installed on the right side in the outer shell, and a first storage groove and a second storage groove are formed in the bottom of the outer shell. The first containing groove and the second containing groove are perpendicular to each other, an adjustable grip is rotationally connected into the first containing groove, a first rotating shaft is fixed to the end of the adjustable grip, and the two ends of the first rotating shaft are rotationally connected with the outer shell. The device is convenient to move and carry; the supporting modes are various, and various different reading modes can be selected.

Description

Technical Field

[0001] The present invention relates to the technical field of e-readers, and more particularly to portable literary readers. Background Art

[0002] With the development of electronic technology, people increasingly use e-readers for literary reading to enrich their literary knowledge. An e-reader is a portable device specifically designed for reading e-books, documents, and other digital content. However, existing literary readers can only be held at both ends by hand for viewing and reading during use, and the reading method is relatively single, unable to meet different usage requirements. Therefore, in view of the above situation, there is an urgent need to develop a portable literary reader with diverse support methods and the ability to select multiple different reading methods to overcome the deficiencies in current practical applications and meet current needs. Summary of the Invention

[0003] The purpose of the present invention is to provide a portable literary reader to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] Portable literary reader, comprising a housing body, a dust-proof top cover, an electronic reading screen, a protective sleeve, a clamping mechanism, an adjustable grip, a diagonal support mechanism and an anti-rotation mechanism. The top of the housing body is covered with a dust-proof top cover. The electronic reading screen is detachably fixed inside the housing body. The protective sleeve is fixedly installed on the left side inside the housing body. The protective sleeve is adhesively fixed to the housing body with glue. The electronic reading screen is fitted to the protective sleeve. The clamping mechanism for clamping the electronic reading screen is installed on the right side inside the housing body. The bottom of the housing body is provided with a first storage groove and a second storage groove. The first storage groove and the second storage groove are arranged perpendicular to each other. The adjustable grip is rotatably connected inside the first storage groove. The end of the adjustable grip is fixed with a first rotating shaft. Both ends of the first rotating shaft are rotatably connected to the housing body. Two anti-rotation mechanisms for restricting the rotation of the first rotating shaft and the adjustable grip are installed inside the first storage groove. The diagonal support mechanism is installed inside the second storage groove. When moving and carrying, cover the dust-proof top cover on the housing body to prevent foreign objects from scratching the electronic reading screen during the movement and causing damage to it. Store the adjustable grip inside the first storage groove and the diagonal support mechanism inside the second storage groove, so as to reduce the overall volume and facilitate carrying. When reading, four reading methods can be selected. One is to store the adjustable grip inside the first storage groove and the diagonal support mechanism inside the second storage groove, and hold both sides of the housing body by hand to view the electronic reading screen. The second is to store the diagonal support mechanism inside the second storage groove, rotate the adjustable grip out of the first storage groove and make it parallel to the housing body, and hold the adjustable grip by hand to view. The third is to store the diagonal support mechanism inside the second storage groove, rotate the adjustable grip out of the first storage groove and make it inclined to the housing body, so that the adjustable grip longitudinally diagonally supports the housing body on the table for viewing. The fourth is to store the adjustable grip inside the first storage groove, rotate the diagonal support mechanism out of the second storage groove and make it inclined to the housing body, and horizontally diagonally support the housing body on the table through the diagonal support mechanism for viewing.

[0006] Preferably: A top-out through hole is provided at the bottom of the housing body, and a charging connector through groove is provided at the bottom end of the housing body.

[0007] Preferably: Both the housing body and the dust-proof top cover are made of aluminum alloy.

[0008] Preferably, the clamping mechanism includes: a clamping plate, a protective strip, a first spring, and a limiting guide rod. The clamping plate is located at the right end inside the outer housing. A protective strip is fixedly installed on the front side of the clamping plate. The protective strip is fixed to the clamping plate by glue. A limiting guide rod is welded and fixed on both the upper and lower sides of the clamping plate. The limiting guide rod is inserted into the inner wall of the outer housing. A plurality of first springs are installed on the rear side of the clamping plate. One end of the first spring is fixedly connected to the clamping plate, and the other end is fixedly connected to the inner wall of the outer housing. When in use, place the electronic reading screen between the protective strip and the protective sleeve. The first spring is compressed, and the elastic force of the first spring drives the clamping plate and the protective strip to clamp the electronic reading screen.

[0009] Preferably, the limiting guide rod is slidably connected to the outer housing, and a limiting sliding groove for the movement of the limiting guide rod is provided inside the outer housing.

[0010] Preferably, both the protective sleeve and the protective strip are made of rubber.

[0011] Preferably, the diagonal bracing mechanism includes: a diagonal bracing plate, a second rotating shaft, a semi-circular piece, and a tightening bolt. A second rotating shaft is fixed on the diagonal bracing plate. The second rotating shaft is rotatably connected to the outer housing. One end of the second rotating shaft extends to the outside of the outer housing and is fixed to the semi-circular piece. The semi-circular piece fits on the outer wall of the outer housing. A tightening bolt that abuts against the outer wall of the outer housing is installed on the semi-circular piece. The tightening bolt is connected to the semi-circular piece by a thread. When in use, first loosen the tightening bolt, then rotate the diagonal bracing plate out of the second storage groove so that the bottom of the diagonal bracing plate abuts against the tabletop. Then, tighten the tightening bolt so that the semi-circular piece, the second rotating shaft, and the diagonal bracing plate cannot rotate. The outer housing is laterally braced against the tabletop by the diagonal bracing plate.

[0012] Preferably, the bottom of the diagonal bracing plate is provided with anti-slip lines.

[0013] Preferably, the anti-rotation mechanism includes: an extension plate, an anti-rotation pin, and a second spring. The extension plate is fixedly installed in the first storage groove. An anti-rotation pin that is inserted into the first rotating shaft is installed on the extension plate. The anti-rotation pin is slidably connected to the extension plate. A plurality of limiting insertion holes for the anti-rotation pin to be inserted into are provided on the first rotating shaft. The plurality of limiting insertion holes are evenly distributed on the first rotating shaft. A second spring is installed outside the extension plate. One end of the second spring is fixed to the extension plate, and the other end is fixed to the anti-rotation pin. When in use, first pull out the anti-rotation pin from the limiting insertion hole, then the first rotating shaft and the adjustable grip can be rotated. After rotating to the appropriate position, insert the anti-rotation pin into the limiting insertion hole to fix the first rotating shaft and the adjustable grip.

[0014] Preferably, the included angle between two adjacent first rotating shafts is 60°.

[0015] The beneficial effects of the present invention are as follows:

[0016] When the portable literary reader is carried, the dust-proof top cover is covered on the outer shell to prevent foreign objects from scraping the electronic reading screen during the movement and causing damage to it. The adjustable grip is stored in the first storage groove, and the diagonal support mechanism is stored in the second storage groove, thereby reducing the overall volume and facilitating carrying.

[0017] Four reading modes can be selected during reading:

[0018] First, the adjustable grip is stored in the first storage groove, and the diagonal support mechanism is stored in the second storage groove. People hold both sides of the outer shell to view the electronic reading screen.

[0019] Second, the diagonal support mechanism is stored in the second storage groove. The adjustable grip is rotated out of the first storage groove and made parallel to the outer shell. First, the rotation stop pin is pulled out of the limit jack, and then the first rotating shaft and the adjustable grip can be rotated. When the adjustable grip rotates to be parallel to the outer shell, the rotation stop pin is inserted into the limit jack again to fix the first rotating shaft and the adjustable grip, and people hold the adjustable grip to view.

[0020] Third, the diagonal support mechanism is stored in the second storage groove. First, the rotation stop pin is pulled out of the limit jack, and then the first rotating shaft and the adjustable grip can be rotated. When the adjustable grip rotates to be inclined relative to the outer shell, the rotation stop pin is inserted into the limit jack again to fix the first rotating shaft and the adjustable grip. Then, the adjustable grip is used to longitudinally support the outer shell obliquely on the desktop for viewing.

[0021] Fourth, the adjustable grip is stored in the first storage groove. The diagonal support mechanism is rotated out of the second storage groove and made inclined to the outer shell. First, the tightening bolt is loosened, and then the diagonal support plate is rotated out of the second storage groove to be inclined relative to the outer shell. Then, the tightening bolt is tightened so that the semi-circular piece, the second rotating shaft and the diagonal support plate cannot rotate, and the outer shell is horizontally supported obliquely on the desktop through the diagonal support plate for viewing.

[0022] In summary, the present invention is convenient for mobile carrying; there are various support methods, and multiple different reading modes can be selected. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic top view structure diagram of the present invention.

[0024] Figure 2 It is a schematic bottom view structure diagram of the present invention.

[0025] Figure 3 It is a schematic diagram of the open state of the present invention.

[0026] Figure 4 This is a perspective view of the clamping mechanism in the present invention.

[0027] Figure 5 For the present invention Figure 3 Partial view at location A in

[0028] Figure 6 This is a schematic diagram of the hand-held viewing state of the present invention.

[0029] Figure 7 For the present invention, the schematic diagram of the viewing state with the desktop placed obliquely Figure 1 .

[0030] Figure 8 For the present invention, the schematic diagram of the viewing state with the desktop placed obliquely Figure 2 .

[0031] Figure 9 This is a schematic diagram of a partial structure of the present invention Figure 1 .

[0032] Figure 10 For the present invention Figure 9 Partial view at location C in

[0033] Figure 11 This is a schematic diagram of a partial structure of the present invention Figure 2 .

[0034] Figure 12 For the present invention Figure 2 Partial view at location B in

[0035] Legend:

[0036] 1. Outer housing; 101. Limit sliding groove; 102. First storage groove; 103. Second storage groove; 104. Ejecting through hole; 105. Charging connector passing through groove; 2. Dust-proof top cover; 3. Electronic reading screen; 4. Protective sleeve; 5. Clamping mechanism; 501. Clamping plate; 502. Protective strip; 503. First spring; 504. Limit guide rod; 6. Adjustable grip; 601. First rotating shaft; 602. Limit jack; 7. Bracing mechanism; 701. Bracing plate; 7011. Anti-slip pattern; 702. Second rotating shaft; 703. Semi-circular piece; 704. Tightening bolt; 8. Anti-rotation mechanism; 801. Extension plate; 802. Anti-rotation pin; 803. Second spring. Detailed implementation manners

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] Specific embodiments are given below.

[0039] See Figures 1 to 12, in the embodiments of the present invention, a portable literary reader includes a housing 1, a dust-proof top cover 2, an electronic reading screen 3, a protective cover 4, a clamping mechanism 5, an adjustable grip 6, a diagonal support mechanism 7 and an anti-rotation mechanism 8. The top of the housing 1 is covered with a dust-proof top cover 2. By providing the dust-proof top cover 2, dust falling into the housing 1 can be reduced, and it can also prevent foreign objects from scraping the electronic reading screen 3 during movement and causing damage to it. Both the housing 1 and the dust-proof top cover 2 are made of aluminum alloy, making them have good strength and relatively light weight. The electronic reading screen 3 is detachably fixed inside the housing 1. A protective cover 4 is fixedly installed on the left side inside the housing 1. The protective cover 4 is adhesively fixed to the housing 1 with glue. The electronic reading screen 3 is fitted with the protective cover 4. A clamping mechanism 5 for clamping the electronic reading screen 3 is installed on the right side inside the housing 1. A top-out through hole 104 is provided at the bottom of the housing 1. When it is necessary to take out the electronic reading screen 3, a person passes a finger through the top-out through hole 104 to push the electronic reading screen 3 outwards so as to take out the electronic reading screen 3. A charging connector through slot 105 is provided at the bottom end of the housing 1. The charging connector can be inserted through the charging connector through slot 105 into the electronic reading screen 3 to charge the electronic reading screen 3. A first storage groove 102 and a second storage groove 103 are provided at the bottom of the housing 1. The first storage groove 102 and the second storage groove 103 are arranged perpendicular to each other. An adjustable grip 6 is rotatably connected inside the first storage groove 102. A first rotating shaft 601 is fixed at the end of the adjustable grip 6. Both ends of the first rotating shaft 601 are rotatably connected to the housing 1. Two anti-rotation mechanisms 8 for restricting the rotation of the first rotating shaft 601 and the adjustable grip 6 are installed inside the first storage groove 102. A diagonal support mechanism 7 is installed inside the second storage groove 103. The housing 1 can be diagonally supported on the desktop through the diagonal support mechanism 7. When moving and carrying, the dust-proof top cover 2 is covered on the housing 1 to prevent foreign objects from scraping the electronic reading screen 3 during movement and causing damage to it. The adjustable grip 6 is stored inside the first storage groove 102, and the diagonal support mechanism 7 is stored inside the second storage groove 103, thereby reducing the overall volume and facilitating carrying. Four reading methods can be selected during reading. One is to store the adjustable grip 6 inside the first storage groove 102 and the diagonal support mechanism 7 inside the second storage groove 103, and a person holds both sides of the housing 1 to view the electronic reading screen 3; the second is to store the diagonal support mechanism 7 inside the second storage groove 103, rotate the adjustable grip 6 out of the first storage groove 102 and make it parallel to the housing 1, and a person holds the adjustable grip 6 to view; the third is to store the diagonal support mechanism 7 inside the second storage groove 103, rotate the adjustable grip 6 out of the first storage groove 102 and make it inclined to the housing 1, so that the adjustable grip 6 longitudinally diagonally supports the housing 1 on the desktop for viewing;Fourth, the adjustable grip 6 is retracted into the first storage groove 102, the diagonal support mechanism 7 is rotated out of the second storage groove 103 and tilted with respect to the outer housing 1, and the outer housing 1 is horizontally supported diagonally on the tabletop for viewing through the diagonal support mechanism 7.

[0040] The clamping mechanism 5 includes: a clamping plate 501, a protective strip 502, a first spring 503, and a limiting guide rod 504. The clamping plate 501 is located at the right end inside the outer housing 1. A protective strip 502 is fixedly installed on the front side of the clamping plate 501. The protective strip 502 is fixed to the clamping plate 501 by glue. A limiting guide rod 504 is welded and fixed on both the upper and lower sides of the clamping plate 501. The limiting guide rod 504 is inserted into the inner wall of the outer housing 1, and the limiting guide rod 504 is slidably connected to the outer housing 1. A limiting sliding groove 101 for the movement of the limiting guide rod 504 is provided inside the outer housing 1. The movement direction of the clamping plate 501 is restricted by the limiting guide rod 504 and the limiting sliding groove 101. A plurality of first springs 503 are installed on the rear side of the clamping plate 501. One end of the first spring 503 is fixedly connected to the clamping plate 501, and the other end is fixedly connected to the inner wall of the outer housing 1. During use, the electronic reading screen 3 is placed between the protective strip 502 and the protective cover 4, and the first spring 503 is compressed. The clamping plate 501 and the protective strip 502 clamp the electronic reading screen 3 by the elastic force of the first spring 503.

[0041] Both the protective cover 4 and the protective strip 502 are made of rubber, giving them a certain elastic capacity.

[0042] The diagonal support mechanism 7 includes: a diagonal support plate 701, a second rotating shaft 702, a semi-circular piece 703, and a tightening bolt 704. A second rotating shaft 702 is fixed on the diagonal support plate 701. The second rotating shaft 702 is rotatably connected to the outer housing 1. One end of the second rotating shaft 702 extends to the outside of the outer housing 1 and is fixed to the semi-circular piece 703. The semi-circular piece 703 fits on the outer wall of the outer housing 1 (not fixed together). A tightening bolt 704 that presses against the outer wall of the outer housing 1 is installed on the semi-circular piece 703. The tightening bolt 704 is connected to the semi-circular piece 703 by a thread. Anti-slip lines 7011 are provided at the bottom of the diagonal support plate 701 to increase the friction between the diagonal support plate 701 and the tabletop. When the tightening bolt 704 presses tightly against the outer wall of the outer housing 1, the semi-circular piece 703 and the second rotating shaft 702 are restricted from rotating, so that the diagonal support plate 701 cannot rotate. During use, first loosen the tightening bolt 704, then rotate the diagonal support plate 701 out of the second storage groove 103 so that the bottom of the diagonal support plate 701 presses against the tabletop, and then tighten the tightening bolt 704 so that the semi-circular piece 703, the second rotating shaft 702, and the diagonal support plate 701 cannot rotate. The outer housing 1 is horizontally supported diagonally on the tabletop through the diagonal support plate 701.

[0043] The anti-rotation mechanism 8 includes: an extension plate 801, an anti-rotation pin 802, and a second spring 803. The extension plate 801 is fixedly installed in the first storage groove 102. An anti-rotation pin 802 inserted into the first rotating shaft 601 is installed on the extension plate 801. The anti-rotation pin 802 is slidably connected to the extension plate 801. A plurality of limit insertion holes 602 for the anti-rotation pin 802 to be inserted are provided on the first rotating shaft 601. The plurality of limit insertion holes 602 are evenly distributed on the first rotating shaft 601. The included angle between two adjacent first rotating shafts 601 is 60°. A second spring 803 is installed outside the extension plate 801. One end of the second spring 803 is fixed to the extension plate 801 and the other end is fixed to the anti-rotation pin 802. When in use, first pull out the anti-rotation pin 802 from the limit insertion hole 602, and then the first rotating shaft 601 and the adjustable grip 6 can be rotated. After rotating to the proper position, insert the anti-rotation pin 802 into the limit insertion hole 602 to fix the first rotating shaft 601 and the adjustable grip 6.

[0044] Working principle: When the portable literary reader is carried, cover the dust-proof top cover 2 on the outer housing 1 to prevent foreign objects from scraping the electronic reading screen 3 during the movement and causing damage to it. The adjustable grip 6 is stored in the first storage groove 102, and the diagonal support mechanism 7 is stored in the second storage groove 103, thereby reducing the overall volume and facilitating carrying.

[0045] Four reading modes can be selected during reading:

[0046] First, the adjustable grip 6 is stored in the first storage groove 102, and the diagonal support mechanism 7 is stored in the second storage groove 103. People hold both sides of the outer housing 1 to view the electronic reading screen 3.

[0047] Second, the diagonal support mechanism 7 is stored in the second storage groove 103. The adjustable grip 6 is rotated out of the first storage groove 102 and is in a parallel state with the outer housing 1. First, pull out the anti-rotation pin 802 from the limit insertion hole 602, and then the first rotating shaft 601 and the adjustable grip 6 can be rotated. When the adjustable grip 6 rotates to a parallel state with the outer housing 1, insert the anti-rotation pin 802 into the limit insertion hole 602 to fix the first rotating shaft 601 and the adjustable grip 6. People hold the adjustable grip 6 to view.

[0048] Thirdly, when stowing the diagonal brace mechanism 7 into the second storage groove 103, first pull out the anti-rotation pin 802 from the limit jack 602, and then the first rotating shaft 601 and the adjustable grip 6 can be rotated. After the adjustable grip 6 rotates to an inclined state relative to the outer housing 1, insert the anti-rotation pin 802 into the limit jack 602 to fix the first rotating shaft 601 and the adjustable grip 6. Then, use the adjustable grip 6 to longitudinally brace the outer housing 1 against the desktop for viewing.

[0049] Fourthly, when stowing the adjustable grip 6 into the first storage groove 102, rotate the diagonal brace mechanism 7 out of the second storage groove 103 and make it in an inclined state relative to the outer housing 1. First, loosen the tightening bolt 704, and then rotate the diagonal brace plate 701 out of the second storage groove 103 to make it in an inclined state relative to the outer housing 1. Then, tighten the tightening bolt 704 so that the semi-circular piece 703, the second rotating shaft 702 and the diagonal brace plate 701 cannot rotate. Use the diagonal brace plate 701 to laterally brace the outer housing 1 against the desktop for viewing.

[0050] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered by the protection scope of the present invention.

Claims

1. A portable literature reader, characterized in that The electronic reading device comprises an outer shell (1), a dustproof top cover (2), an electronic reading screen (3), a protective cover (4), a clamping mechanism (5), an adjustable grip (6), a diagonal support mechanism (7) and a rotation-stopping mechanism (8), wherein the top of the outer shell (1) is covered with a dustproof top cover (2), the electronic reading screen (3) is detachably fixed in the outer shell (1), a protective cover (4) is fixedly installed on the left side of the inner part of the outer shell (1), the protective cover (4) is adhered to the outer shell (1) by glue, the electronic reading screen (3) and the protective cover (4) are fitted together, and a clamping mechanism (5) for clamping the electronic reading screen (3) is installed on the right side of the inner part of the outer shell (1). The bottom of the outer shell (1) is provided with a first receiving groove (102) and a second receiving groove (103), the first receiving groove (102) and the second receiving groove (103) are arranged perpendicular to each other, an adjustable handle (6) is rotatably connected in the first receiving groove (102), a first rotating shaft (601) is fixed at the end of the adjustable handle (6), both ends of the first rotating shaft (601) are rotatably connected to the outer shell (1), two anti-rotation mechanisms (8) for limiting the rotation of the first rotating shaft (601) and the adjustable handle (6) are installed in the first receiving groove (102), and a diagonal support mechanism (7) is installed in the second receiving groove (103).

2. The portable literature reader according to claim 1, characterized in that: The bottom of the outer shell (1) is provided with an ejection through hole (104), and the bottom end of the outer shell (1) is provided with a charging connector through slot (105).

3. The portable literature reader according to claim 1, characterized in that: The outer shell (1) and the dustproof top cover (2) are both made of aluminum alloy.

4. The portable literature reader according to claim 1, characterized in that: The clamping mechanism (5) comprises: a clamping plate (501), a protection strip (502), a first spring (503) and a limiting guide rod (504); the clamping plate (501) is located at the right end inside the outer shell (1); a protection strip (502) is fixedly installed on the front side of the clamping plate (501); the protection strip (502) is fixed to the clamping plate (501) by glue; a limiting guide rod (504) is welded and fixed on both the upper and lower sides of the clamping plate (501); the limiting guide rod (504) is inserted into the inner wall of the outer shell (1); a plurality of first springs (503) are installed on the rear side of the clamping plate (501); one end of the first spring (503) is fixedly connected to the clamping plate (501) and the other end is fixedly connected to the inner wall of the outer shell (1).

5. The portable literature reader according to claim 4, characterized in that: The limiting guide rod (504) is slidably connected to the outer shell (1), and a limiting sliding groove (101) for moving the limiting guide rod (504) is provided in the outer shell (1).

6. The portable literature reader according to claim 4, characterized in that: The protective sleeve (4) and the protective strip (502) are both made of rubber.

7. The portable literature reader according to claim 1, characterized in that: The diagonal support mechanism (7) comprises: a diagonal support plate (701), a second rotating shaft (702), a semicircular piece (703) and a tightening bolt (704); the second rotating shaft (702) is fixed on the diagonal support plate (701); the second rotating shaft (702) is rotatably connected to the outer shell (1); one end of the second rotating shaft (702) extends to the outside of the outer shell (1) and is fixed to the semicircular piece (703); the semicircular piece (703) is fitted on the outer wall of the outer shell (1) (not fixed together); a tightening bolt (704) is installed on the semicircular piece (703) and is pressed against the outer wall of the outer shell (1); the tightening bolt (704) is connected to the semicircular piece (703) through a thread.

8. The portable literature reader according to claim 7, characterized in that: The bottom of the diagonal support plate (701) is provided with anti-slip grooves (7011).

9. The portable literature reader according to claim 1, characterized in that: The anti-rotation mechanism (8) comprises: an extension plate (801), an anti-rotation pin (802) and a second spring (803); the extension plate (801) is fixedly installed in the first receiving groove (102); the extension plate (801) is provided with an anti-rotation pin (802) inserted into the first rotating shaft (601); the anti-rotation pin (802) is slidably connected to the extension plate (801); the first rotating shaft (601) is provided with a plurality of limiting holes (602) for inserting the anti-rotation pin (802); the plurality of limiting holes (602) are evenly distributed on the first rotating shaft (601); a second spring (803) is installed on the outer side of the extension plate (801); one end of the second spring (803) is fixed to the extension plate (801) and the other end is fixed to the anti-rotation pin (802).

10. The portable literature reader according to claim 9, characterized in that: The angle between two adjacent first rotating shafts (601) is 60°.

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