CN221225463U

CN221225463U - Laser page turning pen

Info

Publication number: CN221225463U
Application number: CN202323120782.6U
Authority: CN
Inventors: 王云磊; 王凯; 武思堃; 娄凯钊; 王永生
Original assignee: Deli Group Co Ltd
Current assignee: Deli Group Co Ltd
Priority date: 2023-11-20
Filing date: 2023-11-20
Publication date: 2024-06-25
Anticipated expiration: 2033-11-20

Abstract

The utility model discloses a laser page-turning pen which comprises an upper cover, a middle frame and a bottom cover, wherein a first mounting cavity is formed by covering one side of the upper cover and one side of the middle frame, a second mounting cavity is formed by covering the other side of the middle frame and the bottom cover, a first buckling part is arranged on the upper cover, a first buckling position matched with the first buckling part is arranged on the middle frame, the first buckling part and the first buckling position are buckled in the up-down direction to limit the upper cover and the middle frame up and down, a second buckling part is arranged on the inner side wall of the upper cover, a second buckling position matched with the second buckling part is arranged on the inner side wall of the middle frame, the second buckling part and the second buckling position are buckled in the left-right direction to limit the left side and the right side of the upper cover, the upper cover and the middle frame are buckled in the up-down direction and the left-right direction through two groups of buckles, the upper cover can be prevented from deforming in the left-right direction, and the assembly mode is simple and labor-saving.

Description

Laser page turning pen

Technical Field

The utility model relates to the technical field of electronic remote control equipment, in particular to a laser page turning pen.

Background

The laser page turning pen is also called as electronic pointer, it is a new type of patent electronic product specially designed for computer and multimedia projector, besides the mapping function of traditional laser pointer, it can also implement free page turning and free demonstration of slide by simply pressing up and down page turning buttons on the laser pen, and directly remote-controlling computer or multimedia projection equipment in wireless mode. At present, the existing laser page-turning pen comprises an upper shell and a lower shell, wherein the upper shell and the lower shell are fixedly installed together by using screws in the production process, and the installation mode is complex. Thus, for example, bulletin numbers are: the utility model patent of CN203982320U discloses a laser page turning pen, which comprises a pen holder main body, a pen cap and a receiving terminal, wherein the pen holder main body comprises a pen holder surface shell, a middle shell and a bottom shell, the pen holder surface shell is matched with the middle shell to form a first cavity, the second cavity is arranged in the bottom shell, the bottom shell is matched with the middle shell, the bottom shell is in a pen container shape, a first clamping hook matched with the middle shell is arranged on the outer surface of the side wall of the bottom shell, the first clamping hook is matched with first clamping grooves arranged on two side walls of the middle shell, second clamping grooves are arranged on two side walls of the middle shell, and the second clamping grooves are matched with second clamping hooks arranged on two side walls of the inner surface of the pen holder surface shell; in this technical scheme, thereby face-piece and drain pan are all installed on the mesochite through the mode of buckle and are accomplished the equipment, compare comparatively laborsaving in the mounting means that uses fastener such as screw, bolt, but this kind of buckle fixed mode needs to remain certain clearance between face-piece, mesochite and the drain pan and can easily detain and be difficult for taking out when ensureing the equipment, consequently only buckle fixedly about trip and draw-in groove, it is comparatively firm in the upper and lower direction between face-piece, mesochite and the drain pan, but still have the space to produce and rock scheduling problem in the left and right directions, and because trip and draw-in groove only can realize the spacing of upper and lower direction, consequently the face-piece atress is easy to be left and right sides expansion deformation and is thus tripped, actual life is shorter.

Disclosure of utility model

The utility model aims to solve the technical problem of providing a laser page turning pen which carries out up-down limit and left-right limit on an upper cover and a middle frame through two groups of buckles, can avoid left-right deformation of the upper cover, and is simple and labor-saving in assembly mode.

The utility model provides a laser page turning pen which comprises an upper cover, a middle frame and a bottom cover, wherein a first mounting cavity is formed by covering one side of the upper cover and one side of the middle frame, a second mounting cavity is formed by covering the other side of the middle frame and the bottom cover, a first buckling part is arranged on the upper cover, a first buckling position matched with the first buckling part is arranged on the middle frame, the first buckling part and the first buckling position are buckled in the up-down direction to limit the upper cover and the middle frame up and down, a second buckling part is arranged on the inner side wall of the upper cover, a second buckling position matched with the second buckling part is arranged on the inner side wall of the middle frame, and the second buckling part and the second buckling position are buckled in the left-right direction to limit the left side and the right side of the upper cover.

According to the technical scheme, the laser page-turning pen is arranged to serve as a shell for installing parts through an upper cover, a middle frame and a bottom cover, a first installation cavity is formed by covering one side of the upper cover and one side of the middle frame, parts such as a battery and a circuit board are installed in the first installation cavity, a capacitance pen point is installed at one end of the middle frame, a second installation cavity is formed by covering the other side of the middle frame and the bottom cover, parts such as a receiver are installed in the second installation cavity, and different parts are installed through the first installation cavity and the second installation cavity respectively, so that the installation efficiency is improved; through set up first buckle portion on the upper cover, set up first buckle position on the center, when upper cover and center are along upper and lower direction lid, first buckle portion and first buckle position buckle along upper and lower direction, under the buckle effect at first buckle portion and first buckle position, upper cover and center can't break away from along upper and lower direction, thereby fix the upper cover on the center, through set up second buckle portion at the inside wall of upper cover, set up the second buckle position at the inside wall of center, when upper cover and center are along upper and lower direction lid, thereby first buckle portion and first buckle position buckle from top to bottom make upper cover left and right sides atress outwards expand the deformation, thereby second buckle portion on the upper cover inside wall buckle with the second buckle position buckle of center inside wall just under the effort of upper cover outwards expanding, under the buckle effect at second buckle portion and second buckle position, limit upper cover left and right sides outwards expand the deformation, thereby realize spacing to upper cover left and right sides, make the upper cover be connected more closely with the installation of center, increase the life of upper cover.

As an improvement, the first buckling position and the second buckling position are opposite in buckling direction, the first buckling position is buckled with the first buckling part along the direction back to the first mounting cavity, and the second buckling position is buckled with the second buckling part along the direction towards the first mounting cavity. In the technical scheme, the first buckling position is buckled with the first buckling part along the direction back to the first installation cavity, and the second buckling position is buckled with the second buckling part along the direction towards the first installation cavity, so that the buckling directions of the first buckling position and the second buckling position are opposite, the upper cover can be simultaneously subjected to inward and outward limiting actions when being fixed on the middle frame through buckling (the inward direction in the application refers to the direction towards the first installation cavity and the outward direction back to the first installation cavity), the left side and the right side of the upper cover are not easy to deform, and the upper cover and the middle frame are installed more reliably.

As an improvement, the first fastening part is a protruding structure arranged on the inner side wall of the upper cover, and the first fastening position is a fastening groove structure arranged on the middle frame. In the technical scheme, the first buckling part is a protruding structure on the inner side wall of the upper cover, the first buckling position is a buckling groove structure on the middle frame, when the upper cover and the middle frame are covered up and down, the protruding structure and the buckling groove structure are buckled to limit the upper cover and the middle frame up and down, the buckling structure is simple, and the production and installation efficiency is high; on the other hand, in this scheme first buckle portion can also be the catching groove structure on the upper cover, and corresponding, first buckle position is protruding structure on the center inside wall, and the buckle principle is the same.

As an improvement, the first buckling position is provided with a guide cambered surface matched with the first buckling part, and the first buckling part is buckled with the first buckling position up and down under the action of the guide cambered surface. In this technical scheme, first buckle portion is protruding structure on the upper cover inside wall, first buckle position is the catching groove structure on the center, through set up the direction cambered surface on first buckle position for thereby protruding structure can get into the catching groove structure under the direction effect of direction cambered surface and lock with the catching groove structure, thereby the direction cambered surface makes the buckle more smooth and easy, installation laborsaving and improvement installation effectiveness.

As an improvement, the second fastening part is a protruding structure arranged on the inner side wall of the upper cover, and the second fastening position is a fastening groove structure arranged on the inner side wall of the middle frame. In the technical scheme, the second buckling part is arranged to be a protruding structure on the inner side wall of the upper cover, the second buckling position is arranged to be a buckling groove structure on the inner side wall of the middle frame, when the upper cover and the middle frame are vertically covered, the left side wall and the right side wall of the upper cover are stressed to generate an acting force of outward expansion deformation, so that the second buckling part is buckled and limited with the second buckling position along the left-right direction, the buckling structure is simple, and the production and installation efficiency is higher; on the other hand, in this scheme second buckle portion can also be the catching groove structure on the upper cover inside wall, and corresponding, the second buckle position is protruding structure on the inside wall, and the buckle principle is the same.

As an improvement, the second fastening part is provided with a first guiding inclined plane adapted to the second fastening position, and/or the second fastening position is provided with a second guiding inclined plane adapted to the second fastening part. In the technical scheme, the second buckling part is limited with the second buckling position buckle along the left-right direction, the first guiding inclined plane is arranged on the second buckling part, the second buckling part is buckled with the second buckling position under the guiding action of the first guiding inclined plane, and the first guiding inclined plane enables the buckle to be smoother, so that the installation is labor-saving and the buckle structure is not easy to damage; according to the scheme, the second guide inclined plane can be arranged on the second buckling position, the second buckling part is buckled with the second buckling position under the guide action of the second guide inclined plane, and the second guide inclined plane enables buckling to be smoother, so that the installation is labor-saving and the buckling structure is not easy to damage; this scheme can also set up first direction inclined plane on second buckle portion, set up the second direction inclined plane on the second buckle position, second buckle portion under the direction effect of first direction inclined plane and second direction inclined plane with second buckle position buckle, first direction inclined plane and second direction inclined plane make the buckle more smooth and easy, and installation effectiveness is higher to first direction inclined plane and second direction inclined plane laminating after the buckle is accomplished, form stable firm buckle structure, the installation reliability is higher.

As an improvement, the inclination angle of the first guide inclined surface is 45 ° ± 15 °, the inclination angle of the second guide inclined surface is 45 ° ± 15 °, and the sum of the inclination angles of the first guide inclined surface and the second guide inclined surface is 90 °. In the technical scheme, the inclination angles of the first guide inclined plane and the second guide inclined plane are 45 degrees+/-15 degrees, and the sum of the inclination angles of the first guide inclined plane and the second guide inclined plane is 90 degrees, so that the first guide inclined plane and the second guide inclined plane can be completely attached after the buckle is completed, and the strength and the reliability of the buckle are improved.

As an improvement, the inside wall of the bottom cover is provided with a third buckling part, the outside wall of the middle frame is provided with a third buckling position matched with the third buckling part, and the third buckling part and the third buckling position are buckled in the up-down direction so as to limit the bottom cover and the middle frame up and down. In this technical scheme, through set up third buckle portion on the bottom inside wall, set up the third buckle position on the lateral wall of center, when center and bottom along upper and lower direction lid, third buckle portion and third buckle position buckle along upper and lower direction, under the buckle effect in third buckle portion and third buckle position, bottom and center can't break away from along upper and lower direction to fix the bottom on the center, buckle simple structure, installation effectiveness are higher.

As an improvement, the third fastening part is a protruding structure arranged on the inner side wall of the bottom cover, and the third fastening position is a fastening groove structure arranged on the middle frame. In the technical scheme, the third buckling part is arranged to be a protruding structure on the inner side wall of the bottom cover, the third buckling position is arranged to be a buckling groove structure on the middle frame, when the middle frame and the bottom cover are covered up and down, the protruding structure and the buckling groove structure are buckled to limit the middle frame and the bottom cover up and down, the buckling structure is simple, and the production and installation efficiency is high; on the other hand, in this scheme third buckle portion can also be the catching groove structure on the end lid, and corresponding, the third buckle position is protruding structure on the center inside wall, and the buckle principle is the same.

As an improvement, a fourth buckling part is arranged on the bottom cover, a fourth buckling position matched with the fourth buckling part is arranged on the middle frame, and the fourth buckling part and the fourth buckling position are spliced in the vertical direction so as to limit the left and right of the bottom cover and the middle frame. In this technical scheme, through set up fourth buckle portion on the bottom, set up fourth buckle position on the center, when center and bottom are followed the upper and lower direction lid, fourth buckle portion and fourth buckle position peg graft the buckle along upper and lower direction, under the spacing effect at fourth buckle portion and fourth buckle position, bottom and center can't follow left and right directions relative movement to fix the bottom on the center, buckle simple structure, installation effectiveness are higher.

As an improvement, the fourth fastening part is a protruding structure arranged on the bottom cover, and the fourth fastening position is a slot structure arranged on the middle frame. In the technical scheme, the fourth buckling part is arranged to be a protruding structure on the bottom cover, the fourth buckling position is arranged to be a slot structure on the middle frame, when the middle frame and the bottom cover are vertically covered, the protruding structure is inserted into the slot along the vertical direction so as to limit the middle frame and the bottom cover left and right, and the structure is simple and the production and installation efficiency is higher; on the other hand, in this scheme fourth buckle portion can also be the slot structure on the end lid, and corresponding, the fourth buckle position is the protruding structure on the center, and the buckle principle is the same.

Drawings

Fig. 1 is a schematic perspective view of a laser page-turning pen according to the present disclosure.

Fig. 2 is an exploded view of a laser paging pen of the present disclosure.

Fig. 3 is an exploded cross-sectional schematic view of the upper cover, middle frame and bottom cover of the present disclosure.

Fig. 4 is an enlarged partial schematic view of fig. 3 a of the present disclosure.

Fig. 5 is a schematic cross-sectional view of a laser page-turning pen of the present disclosure.

Fig. 6 is an exploded view of the upper cover and middle frame of the present disclosure.

Fig. 7 is an enlarged partial schematic view of fig. 6B of the present disclosure.

Fig. 8 is an enlarged partial schematic view of fig. 6C of the present disclosure.

The figure shows: 1. an upper cover; 11. a first fastening part; 12. a second fastening part; 121. a first guiding inclined surface; 2. a middle frame; 21. a first clamping position; 211. a guide cambered surface; 22. a second clamping position; 221. a second guiding inclined surface; 23. a third clamping position; 24. a fourth snap-fit position; 3. a bottom cover; 31. a third fastening part; 32. a fourth fastening part; 4. a battery; 5. a circuit board; 6. a capacitive pen point; 7. a receiver.

Detailed Description

For a better understanding of the application, various aspects of the application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the application and is not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification.

In the drawings, the thickness, size and shape of the object have been slightly exaggerated for convenience of explanation. The figures are merely examples and are not drawn to scale.

It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "including" and/or "having," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

As shown in fig. 1 to 8, the application discloses a laser page-turning pen, which comprises an upper cover 1, a middle frame 2 and a bottom cover 3, wherein a first installation cavity is formed by covering one sides of the upper cover 1 and the middle frame 2, a second installation cavity is formed by covering the other sides of the middle frame 2 and the bottom cover 3, the laser page-turning pen is provided with a shell for installing parts by the upper cover 1, the middle frame 2 and the bottom cover 3, a first installation cavity is formed by covering one sides of the upper cover 1 and the middle frame 2, parts such as a battery 4, a circuit board 5 and the like are arranged in the first installation cavity, a capacitor pen point 6 is arranged at one end of the middle frame 2, a second installation cavity is formed by covering the other sides of the middle frame 2 and the bottom cover 3, and different parts are respectively arranged in the second installation cavity by the first installation cavity and the second installation cavity, so that the installation efficiency is improved;

As shown in fig. 2, 3, 6 and 7, a first fastening portion 11 is provided on the upper cover 1, a first fastening position 21 adapted to the first fastening portion 11 is provided on the middle frame 2, the first fastening portion 11 and the first fastening position 21 are fastened in the up-down direction to limit the upper cover 1 and the middle frame 2 up and down, and when the upper cover 1 and the middle frame 2 are covered in the up-down direction, the first fastening portion 11 and the first fastening position 21 are fastened in the up-down direction, and under the fastening effect of the first fastening portion 11 and the first fastening position 21, the upper cover 1 and the middle frame 2 cannot be separated in the up-down direction, so that the upper cover 1 is fixed on the middle frame 2; as shown in fig. 2 and 3, directions marked in the drawings indicate up, down, left and right, in the present application, the upper cover 1 is located above the middle frame 2, the lower cover 3 is located below the middle frame 2, and the up, down and left directions in the present application refer to the width direction of the laser page turning pen, and are not repeated;

As shown in fig. 2, fig. 3, fig. 6 and fig. 7, the inner side wall of the upper cover 1 is provided with a second buckling part 12, the inner side wall of the middle frame 2 is provided with a second buckling position 22 matched with the second buckling part 12, the second buckling part 12 and the second buckling position 22 are buckled in the left-right direction so as to limit the left side and the right side of the upper cover 1, the inner side wall of the upper cover 1 is provided with the second buckling part 12, the inner side wall of the middle frame 2 is provided with the second buckling position 22, when the upper cover 1 and the middle frame 2 are covered in the up-down direction, the first buckling part 11 and the first buckling position 21 are buckled up and down so that the left side and the right side of the upper cover 1 are forced to expand outwards and deform, the second buckling part 12 on the inner side wall of the upper cover 1 is just buckled with the second buckling position 22 on the inner side wall of the middle frame 2 under the action of the second buckling part 12 and the second buckling position 22, so that the left side and the right side of the upper cover 1 are limited, when the upper cover 1 and the middle frame 2 are covered up-down, the upper cover 1 and the middle frame 2 are more reliably connected, the service life of the upper cover is prolonged, and the service life of the upper cover is prolonged; the first fastening portion 11 and the second fastening portion 12 are distributed at intervals on the inner side wall of the upper cover 1, so that the first fastening portion 11 is fastened with the first fastening position 21, and the second fastening portion 12 is fastened with the second fastening position 22 without interference.

More specifically, as shown in fig. 3 and 5, the fastening directions of the first fastening position 21 and the second fastening position 22 are opposite, the first fastening position 21 is fastened with the first fastening portion 11 along the direction opposite to the first installation cavity, the second fastening position 22 is fastened with the second fastening portion 12 along the direction opposite to the first installation cavity, and the fastening directions of the first fastening position 21 and the second fastening position 22 are opposite, so that the upper cover 1 can be simultaneously subjected to inward and outward limiting effects when fastened on the middle frame 2.

More specifically, as shown in fig. 2, 3 and 8, the first fastening portion 11 is a protruding structure arranged on the inner side wall of the upper cover 1, the first fastening position 21 is a fastening groove structure arranged on the middle frame 2, the first fastening portion 11 is a protruding structure arranged on the inner side wall of the upper cover 1, the first fastening position 21 is a fastening groove structure on the middle frame 2, and when the upper cover 1 and the middle frame 2 are vertically covered, the protruding structure and the fastening groove structure are fastened to limit the upper cover 1 and the middle frame 2 vertically, the fastening structure is simple, and the production and installation efficiency is high; on the other hand, in this embodiment, the first fastening portion 11 may also be a fastening groove structure on the upper cover 1, and the corresponding first fastening position 21 is a protruding structure on the inner sidewall of the middle frame 2, which is the same in fastening principle and will not be described again.

More specifically, as shown in fig. 3 and 8, the first fastening position 21 is provided with a guiding cambered surface 211 adapted to the first fastening portion 11, the first fastening portion 11 is fastened with the first fastening position 21 up and down under the action of the guiding cambered surface 211, the first fastening portion 11 is a protruding structure on the inner side wall of the upper cover 1, the first fastening position 21 is a fastening groove structure on the middle frame 2, and the protruding structure can enter the fastening groove structure under the guiding action of the guiding cambered surface 211 by arranging the guiding cambered surface 211 on the first fastening position 21, so that the fastening is smoother due to the guiding cambered surface 211, the installation is labor-saving, and the installation efficiency is improved.

More specifically, as shown in fig. 2, 3, 7 and 8, the second fastening portion 12 is a protruding structure arranged on the inner side wall of the upper cover 1, the second fastening position 22 is a fastening groove structure arranged on the inner side wall of the middle frame 2, the second fastening portion 12 is a protruding structure on the inner side wall of the upper cover 1, the second fastening position 22 is a fastening groove structure on the inner side wall of the middle frame 2, and when the upper cover 1 and the middle frame 2 are vertically covered, the left and right side walls of the upper cover 1 are stressed to generate an action force of outward expansion deformation, so that the second fastening portion 12 is fastened and limited with the second fastening position 22 along the left and right directions, the fastening structure is simple, and the production and installation efficiency is higher; on the other hand, in this embodiment, the second fastening portion 12 may also be a fastening groove structure on the inner sidewall of the upper cover 1, and the corresponding second fastening position 22 is a protruding structure on the inner sidewall, which is the same in fastening principle and will not be described again.

More specifically, as shown in fig. 4 and 7, the second fastening portion 12 is provided with a first guiding inclined plane 121 adapted to the second fastening position 22, the second fastening portion 12 is fastened and limited with the second fastening position 22 along the left-right direction, the second fastening portion 12 is fastened with the second fastening position 22 under the guiding action of the first guiding inclined plane 121, the first guiding inclined plane 121 makes the fastening smoother, the installation is labor-saving, and the fastening structure is not easy to damage; the second buckling position 22 is provided with a second guiding inclined plane 221 matched with the second buckling part 12, the second buckling part 12 is buckled with the second buckling position 22 under the guiding action of the second guiding inclined plane 221, and the second guiding inclined plane 221 enables buckling to be smoother, installation is labor-saving and a buckling structure is not easy to damage; the second buckling part 12 is buckled with the second buckling position 22 under the guiding action of the first guiding inclined plane 121 and the second guiding inclined plane 221, the first guiding inclined plane 121 and the second guiding inclined plane 221 enable buckling to be smoother, the installation efficiency is higher, the first guiding inclined plane 121 is attached to the second guiding inclined plane 221 after buckling is completed, a stable and firm buckling structure is formed, and the installation reliability is higher.

More specifically, as shown in fig. 4, 5 and 7, the inclination angle of the first guide inclined plane 121 is 45 ° ± 15 °, the inclination angle of the second guide inclined plane 221 is 45 ° ± 15 °, and the sum of the inclination angles of the first guide inclined plane 121 and the second guide inclined plane 221 is 90 °, so that the first guide inclined plane 121 and the second guide inclined plane 221 can be completely attached after the fastening is completed, and the fastening strength and reliability are improved; preferably, the first guide inclined surface 121 has an inclination angle of 45 ° and the second guide inclined surface 221 has an inclination angle of 45 °, which is simpler to manufacture; the present embodiment can also exemplify that the inclination angle of the second guide slope 221 is 30 ° when the inclination angle of the first guide slope 121 is 60 °, and that the inclination angle of the second guide slope 221 is 60 ° when the inclination angle of the first guide slope 121 is 30 °.

More specifically, as shown in fig. 2 and 3, the inner side wall of the bottom cover 3 is provided with a third fastening portion 31, the outer side wall of the middle frame 2 is provided with a third fastening portion 23 adapted to the third fastening portion 31, the third fastening portion 31 and the third fastening portion 23 are fastened in the up-down direction so as to limit the bottom cover 3 and the middle frame 2 up and down, the third fastening portion 31 is arranged on the inner side wall of the bottom cover 3, the third fastening portion 23 is arranged on the outer side wall of the middle frame 2, when the middle frame 2 and the bottom cover 3 are covered in the up-down direction, the third fastening portion 31 and the third fastening portion 23 are fastened in the up-down direction, and under the fastening effect of the third fastening portion 31 and the third fastening portion 23, the bottom cover 3 and the middle frame 2 cannot be separated in the up-down direction, so that the bottom cover 3 is fixed on the middle frame 2, the fastening structure is simple, and the installation efficiency is high.

More specifically, as shown in fig. 3, the third fastening portion 31 is a protruding structure disposed on an inner side wall of the bottom cover 3, the third fastening position 23 is a fastening groove structure disposed on the middle frame 2, the third fastening portion 31 is a protruding structure disposed on an inner side wall of the bottom cover 3, the third fastening position 23 is a fastening groove structure on the middle frame 2, when the middle frame 2 and the bottom cover 3 are vertically covered, the protruding structure and the fastening groove structure are fastened, so that the middle frame 2 and the bottom cover 3 are vertically limited, the fastening structure is simple, and the production and installation efficiency is higher; on the other hand, in this embodiment, the third fastening portion 31 may also be a fastening groove structure on the bottom cover 3, and the corresponding third fastening position 23 is a protruding structure on the inner sidewall of the middle frame 2, which is the same in fastening principle and will not be described again.

More specifically, as shown in fig. 3 and 8, a fourth fastening portion 32 is provided on the bottom cover 3, a fourth fastening position 24 adapted to the fourth fastening portion 32 is provided on the middle frame 2, the fourth fastening portion 32 and the fourth fastening position 24 are inserted in the up-down direction to limit the left and right directions of the bottom cover 3 and the middle frame 2, the fourth fastening portion 32 is provided on the bottom cover 3, the fourth fastening position 24 is provided on the middle frame 2, when the middle frame 2 and the bottom cover 3 are covered in the up-down direction, the fourth fastening portion 32 and the fourth fastening position 24 are inserted in the up-down direction, and under the limit effect of the fourth fastening portion 32 and the fourth fastening position 24, the bottom cover 3 and the middle frame 2 cannot move relatively in the left-right direction, thereby fixing the bottom cover 3 on the middle frame 2, and the fastening structure is simple, and the installation efficiency is high.

More specifically, as shown in fig. 3 and 8, the fourth fastening portion 32 is a protruding structure disposed on the bottom cover 3, the fourth fastening position 24 is a slot structure disposed on the middle frame 2, and when the middle frame 2 and the bottom cover 3 are vertically covered, the protruding structure is inserted into the slot along the vertical direction, so that the middle frame 2 and the bottom cover 3 are limited left and right, the structure is simple, and the production and installation efficiency is high; on the other hand, in this embodiment, the fourth fastening portion 32 may also be a slot structure on the bottom cover 3, and the corresponding fourth fastening position 24 is a protruding structure on the middle frame 2, which is the same in fastening principle and will not be described again.

The present utility model is not limited to the above-mentioned preferred embodiments, and any person who can obtain other various products under the teaching of the present utility model can make any changes in shape or structure, and all the technical solutions that are the same or similar to the present utility model fall within the scope of the present utility model.

Claims

1. The utility model provides a laser page turning pen, includes upper cover (1), center (2) and bottom (3), one side lid of upper cover (1) and center (2) closes and is formed with first installation cavity, the opposite side of center (2) is formed with the second installation cavity with bottom (3) lid, a serial communication port, be equipped with first buckle portion (11) on upper cover (1), be equipped with first buckle position (21) with first buckle portion (11) adaptation on center (2), first buckle portion (11) are in order to limit upper cover (1) and center (2) from top to bottom along upper and lower direction buckle with first buckle position (21), the inside wall of upper cover (1) is equipped with second buckle portion (12), the inside wall of center (2) be equipped with second buckle position (22) of second buckle portion (12) adaptation, second buckle portion (12) are in order to limit upper cover (1) left and right sides along left and right directions buckle with second buckle position (22).

2. The laser page turning pen according to claim 1, wherein the first fastening position (21) and the second fastening position (22) are fastened in opposite directions, the first fastening position (21) is fastened with the first fastening portion (11) in a direction opposite to the first mounting cavity, and the second fastening position (22) is fastened with the second fastening portion (12) in a direction facing the first mounting cavity.

3. The laser page-turning pen according to claim 1 or 2, wherein the first fastening portion (11) is a protruding structure arranged on the inner side wall of the upper cover (1), and the first fastening position (21) is a fastening groove structure arranged on the middle frame (2).

4. A laser page turning pen according to claim 3, characterized in that the first fastening position (21) is provided with a guiding cambered surface (211) adapted to the first fastening portion (11), and the first fastening portion (11) is fastened with the first fastening position (21) up and down under the action of the guiding cambered surface (211).

5. The laser page-turning pen according to claim 1 or 2, wherein the second fastening portion (12) is a protruding structure arranged on the inner side wall of the upper cover (1), and the second fastening position (22) is a fastening groove structure arranged on the inner side wall of the middle frame (2).

6. A laser page-turning pen as claimed in claim 5, characterized in that the second snap part (12) is provided with a first guiding bevel (121) adapted to the second snap position (22) and/or that the second snap position (22) is provided with a second guiding bevel (221) adapted to the second snap part (12).

7. The laser paging pen as claimed in claim 6, wherein the first guide slope (121) has an inclination angle of 45 ° ± 15 °, the second guide slope (221) has an inclination angle of 45 ° ± 15 °, and a sum of the inclination angles of the first guide slope (121) and the second guide slope (221) is 90 °.

8. The laser page-turning pen according to claim 1, wherein a third buckling part (31) is arranged on the inner side wall of the bottom cover (3), a third buckling position (23) matched with the third buckling part (31) is arranged on the outer side wall of the middle frame (2), and the third buckling part (31) and the third buckling position (23) are buckled in the up-down direction to limit the bottom cover (3) and the middle frame (2) up and down.

9. The laser page turning pen as claimed in claim 8, wherein the third fastening portion (31) is a protruding structure disposed on an inner side wall of the bottom cover (3), and the third fastening portion (23) is a fastening groove structure disposed on the middle frame (2).

10. The laser page turning pen according to claim 8, wherein a fourth fastening part (32) is arranged on the bottom cover (3), a fourth fastening position (24) matched with the fourth fastening part (32) is arranged on the middle frame (2), and the fourth fastening part (32) and the fourth fastening position (24) are spliced in the up-down direction to limit the left and right positions of the bottom cover (3) and the middle frame (2).

11. The laser page turning pen as claimed in claim 10, wherein the fourth fastening portion (32) is a protruding structure disposed on the bottom cover (3), and the fourth fastening portion (24) is a slot structure disposed on the middle frame (2).