Shell structure of eye protection instrument

Abstract

The utility model relates to a shell structure of an eye protection instrument, which comprises a distance adjusting shell, a mask shell and a mobile phone fixing shell, an opening at the rear end of the distance adjusting shell is movably sleeved outside the front end of the mask shell so as to have a function of moving back and forth, and the mobile phone fixing shell is arranged at the opening at the front end of the distance adjusting shell and can be opened and closed; a first window hole is formed in the front end of the mask shell, and two lenses which are symmetrically distributed left and right are further arranged in the first window hole; the mask further comprises a face transition cover embedded and fixed in an opening in the rear end of the mask shell. The cover plate is fixed at the opening at the front end of the distance adjusting shell and is positioned behind the mobile phone fixing housing; according to the utility model, the use function is added, and the need of installing an electronic screen for displaying video images in the shell of the eye protection instrument is omitted, so that the manufacturing cost of the eye protection instrument is reduced; a movable structure is adopted, so that the use effect and the comfort degree of the eye protection instrument are ensured; and lenses with different focal lengths can be replaced according to needs so as to enlarge the application range.

Description

TECHNICAL FIELD

[0001] The utility model relates to an eye protection instrument technical field especially relates to an eye protection instrument's casing structure. BACKGROUND

[0002] Eye protection instrument is an electronic device acting on the eye, it has multiple functions and characteristics, can help people relieve eye fatigue, prevent eye diseases to a certain extent, most of the eye protection instrument on the market is vibrating massage, hot compress, air pressure regulation, magnet therapy and other functions, the purpose is to stimulate the eye around the acupoint to effectively relieve eye fatigue.

[0003] In recent years, an eye protection instrument capable of playing video images appears, when the user's eyes watch the video images, the video images guide the eyeball to carry out slight and specific movement, so as to stimulate the eye nerve and promote blood circulation, finally achieve the effect of relieving eye fatigue.

[0004] But the casing of the existing eye protection instrument capable of playing video images is single, must install the electronic screen for displaying video images in its inside to realize the video image playing function, but causes the cost of eye protection instrument to be higher, at the same time, the casing of the existing eye protection instrument adopts fixed structure, causes the distance between two lenses and screen and the interval of two lenses to be unable to adjust, because the vision and pupil distance of users exist differences, this causes part of users to clearly watch the video images, and part of users can see the video images that are relatively blurred, further influence the use effect and comfort of eye protection instrument, in addition, the casing of the existing eye protection instrument cannot be disassembled, so cannot replace the lenses with different focal lengths according to the needs, causes the application scope to be small, and further improvement is needed. INVENTION CONTENTS

[0005] In view of the above-mentioned prior art status, the technical problem to be solved by the utility model is to provide an eye protection instrument casing structure which increases the use function, eliminates the necessity of installing an electronic screen for displaying video images in the casing of the eye protection instrument, reduces the cost of the eye protection instrument, adopts a movable structure to ensure the use effect and comfort of the eye protection instrument, adopts a detachable structure to replace the lenses with different focal lengths according to the needs, and further expands the application scope.

[0006] The utility model adopts the technical scheme in the technical problem: an eye protection instrument casing structure, characterized in that, including distance adjusting casing, face shield casing and cell -phone fixed cover casing, the rear end opening of distance adjusting casing is movably connected outside the front end of face shield casing to have front and back movement function, the cell -phone fixed cover casing is arranged at the front end opening of distance adjusting casing and can be opened and closed.

[0007] The front end of the mask shell is formed with a first window hole, and two left-right symmetrical lenses are arranged in the first window hole.

[0008] The rear end of the mask shell is formed with a second window hole, and two left-right symmetrical lenses are arranged in the second window hole.

[0009] The front end of the mask shell is formed with a first window hole, and two left-right symmetrical lenses are arranged in the first window hole.

[0010] The front end of the mask shell is formed with a first window hole, and two left-right symmetrical lenses are arranged in the first window hole.

[0011] The front end of the mask shell is formed with a first window hole, and two left-right symmetrical lenses are arranged in the first window hole.

[0012] The front end of the mask shell is formed with a first window hole, and two left-right symmetrical lenses are arranged in the first window hole.

[0013] The front end of the mask shell is formed with a first window hole, and two left-right symmetrical lenses are arranged in the first window hole.

[0014] The front end of the mask shell is formed with a first window hole, and two left-right symmetrical lenses are arranged in the first window hole.

[0015] Preferably, a first sunken cavity is formed in the lens fixing plate, and a detachable pressing ring is fixed in the first sunken cavity; the lens is arranged between the lens fixing plate and the pressing ring; a positioning hole is formed in the center of the bottom surface of the first sunken cavity; and a positioning ring is formed on the outer circumferential surface of the lens and arranged in a ring shape, with the front side edge of the positioning ring embedded in the first sunken cavity so that the front end of the lens is embedded in the positioning hole.

[0016] Preferably, a V-shaped notch is formed on the inner wall of the first sunken cavity, and a first V-shaped protrusion is correspondingly formed on the outer circumferential surface of the lens, with the two side walls of the first V-shaped protrusion fitted on the two side walls of the V-shaped notch to prevent the lens from rotating; and a second V-shaped protrusion is correspondingly formed on the outer circumferential surface of the pressing ring; and a notch groove is formed on the edge of the front side opening of the pressing ring, with the rear side edge of the positioning ring embedded in the notch groove.

[0017] Preferably, a plurality of rectangular holes are formed between the front and rear side walls of the lens fixing plate and arranged around the periphery of the first sunken cavity; a same number of insertion blocks are formed on the front side of the pressing ring and directed towards the lens fixing plate, with each insertion block inserted into a corresponding rectangular hole; a first stop block is formed on the outer side wall of each rectangular hole and directed towards the inside of the rectangular hole; and a first clamping block is formed on the end of each insertion block and directed towards the first stop block in the corresponding rectangular hole, with each first clamping block buckled on the front side of the corresponding first stop block to detachably fix the pressing ring on the lens fixing plate and press the lens.

[0018] Preferably, a groove is formed in the inner wall of the C-shaped rubber sleeve, and the second C-shaped flange is embedded in the groove; a plurality of first reference holes are formed between the front side outer wall of the C-shaped rubber sleeve and the front side inner wall of the groove and arranged in sequence along the contour; a same number of convex sleeves are formed on the front side outer wall of the second C-shaped flange; a same number of limiting columns are formed on the rear side outer wall of the first C-shaped flange; each convex sleeve is embedded in a corresponding first reference hole; and each limiting column is inserted into a corresponding convex sleeve.

[0019] Preferably, a plurality of second reference holes are formed between the rear side outer wall of the C-shaped rubber sleeve and the rear side inner wall of the groove and arranged in sequence along the contour; a same number of positioning columns are formed on the rear side outer wall of the second C-shaped flange; and each positioning column is embedded in a corresponding second reference hole.

[0020] Preferably, the lower side edge of the mobile phone fixing cover shell is rotatably connected to the lower side edge of the front end opening of the distance adjusting shell, a press switch capable of moving up and down and having an upward elastic reset function is further embedded in the upper side inner wall of the front end opening of the distance adjusting shell, an extension block is formed on the front side outer wall of the press switch and extends forward, the end of the extension block extends into the upper side edge of the mobile phone fixing cover shell, a second clamping block is formed on the upper side inner wall of the opening of the mobile phone fixing cover shell and faces downward, and the second clamping block is buckled on the front side of the second clamping block to detachably fix the upper side edge of the mobile phone fixing cover shell to the upper side edge of the front end opening of the distance adjusting shell.

[0021] Compared with the prior art, the mobile phone fixing cover shell of the utility model can be opened and closed, and the mobile phone can be detachably fixed in the mobile phone fixing cover shell to directly use the mobile phone to play video images, so that the use function is increased, the necessity of installing an electronic screen for displaying video images in the inside of the eye protection instrument shell is saved, and the cost of the eye protection instrument is reduced; meanwhile, the movable structure is adopted to enable the distance adjusting shell to relatively move forward and backward with the mask shell, so that the distance between the mobile phone and the two lenses can be adjusted, and the distance between the two lenses can also be adjusted, so that each user can adjust the imaging effect according to the vision and interpupillary distance to clearly watch video images, and the use effect and comfort of the eye protection instrument are ensured; in addition, the detachable structure is adopted to realize the disassembly of the lenses, and the user can replace the lenses with different focal lengths according to the need to expand the application range. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 It is a right rear side exploded view of the utility model;

[0023] Fig. 2 It is a right front side exploded view of the utility model;

[0024] Fig. 3 It is a right rear side exploded view of the lens of the utility model;

[0025] Fig. 4 It is a right front side exploded view of the lens of the utility model. DETAILED DESCRIPTION

[0026] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the ordinary meaning as understood by a person of ordinary skill in the art to which the present application pertains. The terms "first", "second", and similar terms in the present application do not denote any order, quantity, or importance, but are merely used to distinguish different components. The terms "comprising" or "including" or similar terms mean that the elements or objects before the term encompass the elements or objects listed after the term and their equivalents, without excluding other elements or objects. The terms "connected" or "connected" or similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right", and the like are only used to represent relative positional relationships, which may change accordingly when the absolute position of the described object changes.

[0027] In order to keep the following description of the embodiments of the present application clear and concise, detailed descriptions of known functions and known components are omitted.

[0028] As shown in Figs. 1-4 A shell structure of an eye protection instrument includes a distance adjusting shell 1, a mask shell 2, and a mobile phone fixing shell 4. The rear end opening of the distance adjusting shell 1 is movably sleeved on the outside of the front end of the mask shell 2 to have a front and rear movement function. The mobile phone fixing shell 4 is arranged at the front end opening of the distance adjusting shell 1 and can be opened and closed.

[0029] A first window hole 21 is formed at the front end of the mask shell 2. Two left and right symmetrical lenses 7 are arranged in the first window hole 21.

[0030] It also includes a face transition cover 5 embedded and fixed in the inside of the rear end opening of the mask shell 2. Two left and right symmetrical cavity holes 52 are arranged at the front end of the face transition cover 5 and are matched with the first window hole 21.

[0031] It also includes a cover plate 3 fixed at the front end opening of the distance adjusting shell 1 and located behind the mobile phone fixing shell 4. Two left and right symmetrical light shielding cylinders 31 are formed in the cover plate 3 and are matched with the first window hole 21. The area of the end opening of each light shielding cylinder 31 is smaller than the area of the root opening.

[0032] A triangular separation block 23 is formed upward at the middle of the lower inner wall of the first window hole 21. A first notch-shaped pit 24 is formed between the rear side outer wall of the triangular separation block 23 and the lower edge of the front end inner wall of the mask shell 2. Correspondingly, a second notch-shaped pit 53 is formed at the lower edge of the front end inner wall of the face transition cover 5 and is matched with the first notch-shaped pit 24. The first notch-shaped pit 24 and the second notch-shaped pit 53 are matched with the shape of the user's nose bridge.

[0033] The edge of the rear end opening of the mask shell 2 is formed with a first C-shaped flange 25 arranged with the opening downward, and the two ends of the opening of the first C-shaped flange 25 are respectively and symmetrically arranged on the left and right sides of the first notched recess 24. Correspondingly, the edge of the rear end opening of the face transition cover 5 is formed with a second C-shaped flange 51 arranged with the opening downward and located behind the first C-shaped flange 25, and the two ends of the opening of the second C-shaped flange 51 are respectively and symmetrically arranged on the left and right sides of the second notched recess 53.

[0034] The shell structure of the eye protection instrument further comprises a C-shaped rubber sleeve 6 wrapped outside the second C-shaped flange 51, and the left and right sides of the rear side outer wall of the C-shaped rubber sleeve 6 are both formed with an arc-shaped extension piece 61 arranged symmetrically, and the end edges of the two arc-shaped extension pieces 61 are both formed with an arc-shaped eyeshade piece 62 arranged symmetrically.

[0035] The lens 7 comprises a lens fixing plate 71 movably connected in the first window hole 21 to have a left-right translation function, and a lens 73 detachably fixed in the lens fixing plate 71, and the lower side of the lens fixing plate 71 in each lens 7 is formed with an arc edge 714 corresponding to the side outer wall of the first notched recess 24.

[0036] The lens fixing plate 71 is provided with a first sunken cavity 711, and the first sunken cavity 711 is further provided with a detachable pressing ring 72, the lens 73 is arranged between the lens fixing plate 71 and the pressing ring 72, the bottom surface of the first sunken cavity 711 is provided with a positioning hole 712, and the outer circumferential surface of the lens 73 is formed with a positioning ring 731 arranged in a ring shape, and the front side edge of the positioning ring 731 is embedded in the first sunken cavity 711 so that the front end of the lens 73 is embedded in the positioning hole 712.

[0037] The inner wall of the first sunken cavity 711 is formed with a V-shaped notch 713, and correspondingly, the corresponding side outer circumferential surface of the lens 73 is formed with a first V-shaped protrusion 732 matched with the V-shaped notch 713, the two side outer walls of the first V-shaped protrusion 732 are attached to the two side inner walls of the V-shaped notch 713 to prevent the lens 73 from rotating, and the corresponding side outer circumferential surface of the pressing ring 72 is formed with a second V-shaped protrusion 722 matched with the V-shaped notch 713.

[0038] The front side opening edge of the pressing ring 72 is formed with a notch groove 721 arranged in a ring shape, and the rear side edge of the positioning ring 731 is embedded in the notch groove 721.

[0039] A plurality of rectangular holes 715 are formed between the front and rear outer walls of the lens fixing plate 71 and surround the first sink cavity 711, and the front side of the pressing ring 72 is formed with the same number of insertion blocks 723 corresponding to the rectangular holes 715, each of which is inserted into a corresponding rectangular hole 715.

[0040] A first stop block 716 is further formed on the outer side of each rectangular hole 715 towards the inside of the rectangular hole 715, and the end of each insertion block 723 is formed with a first clamping block 724 towards the first stop block 716 in the corresponding rectangular hole 715, each first clamping block 724 is buckled on the front side of a corresponding first stop block 716 to detachably fix the pressing ring 72 on the lens fixing plate 71 and press the lens 73.

[0041] The inner wall of the C-shaped rubber sleeve 6 is provided with a groove 63, and the second C-shaped flange 51 is embedded in the groove 63. A plurality of first reference holes 63 are formed between the front side outer wall of the C-shaped rubber sleeve 6 and the front side inner wall of the groove 63, and the same number of convex sleeves 54 are formed on the front side outer wall of the second C-shaped flange 51. The same number of limiting columns 26 are formed on the rear side outer wall of the first C-shaped flange 25, each convex sleeve 54 is embedded in a corresponding first reference hole 63, and each limiting column 26 is inserted into a corresponding convex sleeve 54.

[0042] A plurality of second reference holes 64 are formed between the rear side outer wall of the C-shaped rubber sleeve 6 and the rear side inner wall of the groove 63, and the same number of positioning columns 55 are formed on the rear side outer wall of the second C-shaped flange 51, each positioning column 55 is embedded in a corresponding second reference hole 64.

[0043] The lower side edge of the mobile phone fixing cover 4 is rotatably connected to the lower side edge of the front end opening of the distance adjusting shell 1, and the upper side inner wall of the front end opening of the distance adjusting shell 1 is further embedded with a press switch 9 which can move up and down and has an upward elastic reset function. The front side outer wall of the press switch 9 is formed with an extension block 91, the end of the extension block 91 extends into the upper side edge of the mobile phone fixing cover 4, the end of the extension block 91 is formed with a second clamping block 92, and the upper side inner wall of the opening of the mobile phone fixing cover 4 is formed with a second stop block 41 corresponding to the second clamping block 92. The second clamping block 92 is buckled on the front side of the second stop block 41 to detachably fix the upper side edge of the mobile phone fixing cover 4 on the upper side edge of the front end opening of the distance adjusting shell 1.

[0044] The front side of the cover plate 3 is further fixed with a decorative plate 8, and the decorative plate 8 is provided with a second window hole 81.

[0045] Working principle:

[0046] By fixing the mask shell 2 in front of the user through the binding belt, the rear side outer wall of the C-shaped rubber sleeve 6 is gently attached to the user's face, and the user's nose bridge is just clamped into the second gap-shaped pit 53, so that the wearing is completed; The two arc-shaped eye cover pieces 62 on the C-shaped rubber sleeve 6 are respectively attached to the skin around the user's eyes, and the two arc-shaped extension pieces 61 on the C-shaped rubber sleeve 6 can prevent external light from entering in front of the eyes.

[0047] Press the press switch 9 downward to move the second clamping block 92 downward below the second stop block 41, then swing the mobile phone fixing shell 4 downward to open, and then fix the mobile phone for playing eye protection video image in the mobile phone fixing shell 4 by means of the mobile phone fixing clamp arranged in the mobile phone fixing shell 4, then operate the mobile phone to make the mobile phone screen play the eye protection video image, and finally turn the mobile phone fixing shell 4 upward to close.

[0048] Finally, the user's eyes can respectively view the eye protection video image played in the mobile phone through the two lenses 73 with a larger field of view to relieve eye fatigue.

[0049] In addition, since the rear end opening of the distance adjusting shell 1 is movably sleeved outside the front end of the mask shell 2 to have the front and rear movement function, if the user's vision is different and cannot clearly see the eye protection video image, the distance adjusting shell 1 can be moved forward and backward by means of the visual distance adjusting module 10 installed between the distance adjusting shell 1 and the mask shell 2 to change the distance between the distance adjusting shell 1 and the two lenses 73, so as to adjust the focal length to make the user's two eyes can clearly view the eye protection video image played in the mobile phone.

[0050] Since the lens fixing plates 71 in the two lenses 7 are movably connected in the first window hole 21 to have the left and right translation function, the center distance between the two lenses 7 can also be adjusted, if the user's interpupillary distance is different, the interpupillary distance between the two lenses 7 can be changed by means of the interpupillary distance adjusting module 11 installed between the two lenses 7, so that the two lenses 7 are respectively located in front of the user's eyes, thereby adapting to the interpupillary distance of different users.

[0051] The mobile phone fixing cover 4 can be opened and closed, and the mobile phone can be detachably fixed in the mobile phone fixing cover 4 to directly use the mobile phone to play video images, so that the use function is increased, the necessity of installing an electronic screen for displaying video images in the inside of the eye protection instrument shell is saved, and the cost of the eye protection instrument is reduced; meanwhile, a movable structure is adopted to enable the distance adjusting shell 1 to be relatively moved forward and backward with the mask shell 2, so that the distance between the mobile phone and the two lenses 7 can be adjusted, the spacing between the two lenses 7 can be adjusted, and each user can adjust the imaging effect according to the vision and interpupillary distance to clearly watch the video images, so that the use effect and comfort of the eye protection instrument are ensured; in addition, a detachable structure is adopted to realize the disassembly of the lens 73, and the user can replace the lens 73 with different focal lengths according to the need to expand the application range.

[0052] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A housing structure for an eye massager, characterized in that, The utility model provides a distance adjusting shell, mask shell and cell -phone fixed cover shell, the rear end opening of distance adjusting shell is movably sleeved in the outside of mask shell front end to have the function of moving back and forth, cell -phone fixed cover shell is equipped with in the front end opening of distance adjusting shell and can open and close, The front end of the mask shell body is formed with a first window hole, and two left and right symmetrical lenses are arranged in the first window hole; The utility model also includes a face transition cover embedded and fixed in the inside of the rear end opening of the mask shell body, the front end of the face transition cover is provided with two left and right symmetrical cavities which are matched with the first window hole; The utility model also includes a cover plate fixed in the front end opening of the distance adjusting shell and located behind the cell -phone fixed cover shell, the cover plate is formed with two left and right symmetrical light shielding cylinders which are matched with the first window hole; The middle part of the lower inner wall of the first window hole is formed with a triangular partition, and a first notched pit is formed between the rear side outer wall of the triangular partition and the lower edge of the front end inner wall of the mask shell body, correspondingly, the lower edge of the front end inner wall of the face transition cover is formed with a second notched pit matched with the first notched pit; The front side of the cover plate is also fixed with a decorative plate, and the decorative plate is provided with a second window hole.

2. The housing structure of the eye-protection device according to claim 1, wherein The edge of the rear end opening of the mask shell body is formed with a first C-shaped flange with the opening downward, and the two ends of the opening of the first C-shaped flange are respectively arranged on the left and right sides of the first notched pit, correspondingly, the edge of the rear end opening of the face transition cover is formed with a second C-shaped flange with the opening downward and located behind the first C-shaped flange, and the two ends of the opening of the second C-shaped flange are respectively arranged on the left and right sides of the second notched pit.

3. The housing structure of the eye-protection device according to claim 2, wherein The utility model also includes a C-shaped rubber sleeve wrapped outside the second C-shaped flange, and the rear side outer wall of the C-shaped rubber sleeve is formed with an arc-shaped extension piece on the left and right sides, and an arc-shaped eye cover piece is formed between the end edge of the arc-shaped extension piece and the rear side outer wall of the C-shaped rubber sleeve.

4. The housing structure of the eye-protection device according to claim 1, wherein The lens includes a lens fixed plate movably connected in the first window hole to have the function of moving left and right, and a lens detachably fixed in the lens fixed plate, and the corner of the lens fixed plate in each lens is formed with an arc edge matched with the corresponding side outer wall of the first notched pit.

5. The housing structure of the eye-protection device according to claim 4, wherein The lens fixed plate is provided with a first cavity, and a detachable pressing ring is fixed in the first cavity, the lens is arranged between the lens fixed plate and the pressing ring, the bottom surface of the first cavity is provided with a positioning hole, and the outer circumferential surface of the lens is formed with a positioning ring arranged in a ring shape, and the front side edge of the positioning ring is embedded in the first cavity so that the front end of the lens is embedded in the positioning hole.

6. The housing structure of an eye-protection device according to claim 5, wherein The inner wall of the first sink cavity is formed with a V-shaped notch, and the corresponding side outer surface of the lens is formed with a first V-shaped protrusion matched with the V-shaped notch. The two side walls of the first V-shaped protrusion are attached to the two side inner walls of the V-shaped notch to prevent the lens from rotating. The corresponding side outer surface of the pressing ring is formed with a second V-shaped protrusion matched with the V-shaped notch. The edge of the front side opening of the pressing ring is formed with a circumferentially arranged notch groove, and the rear edge of the positioning ring is embedded in the notch groove.

7. The housing structure of an eye-protection device according to claim 5, wherein A plurality of rectangular holes surrounding the periphery of the first sink cavity are formed between the front and rear side walls of the lens fixing plate. Correspondingly, the front side of the pressing ring is formed with the same number of insertion blocks facing the lens fixing plate. Each insertion block is inserted into a corresponding rectangular hole. A first stop block is formed on the outer side wall of each rectangular hole towards the inside of the rectangular hole. Correspondingly, the end of each insertion block is formed with a first clamping block facing the first stop block in the corresponding rectangular hole. Each first clamping block is buckled on the front side of the corresponding first stop block to detachably fix the pressing ring on the lens fixing plate and press the lens tightly.

8. The housing structure of the eye-protection device according to claim 3, wherein The inner wall of the C-shaped rubber sleeve is provided with a groove, and the second C-shaped flange is embedded in the groove. A plurality of first reference holes are formed between the front side outer wall of the C-shaped rubber sleeve and the front side inner wall of the groove along the contour. Correspondingly, the same number of convex sleeves are formed on the front side outer wall of the second C-shaped flange. The same number of limiting columns are formed on the rear side outer wall of the first C-shaped flange. Each convex sleeve is embedded in a corresponding first reference hole, and each limiting column is inserted into a corresponding convex sleeve.

9. The housing structure of an eye-protection device according to claim 8, wherein A plurality of second reference holes are formed between the rear side outer wall of the C-shaped rubber sleeve and the rear side inner wall of the groove along the contour. Correspondingly, the same number of positioning columns are formed on the rear side outer wall of the second C-shaped flange. Each positioning column is embedded in a corresponding second reference hole.

10. The housing structure of the eye-protection device according to claim 1, wherein The lower edge of the mobile phone fixing cover is rotatably connected to the lower edge of the front opening of the distance adjusting shell. A press switch with upward elastic reset function is embedded in the upper inner wall of the front opening of the distance adjusting shell. An extension block is formed on the front side outer wall of the press switch. The end of the extension block extends into the upper edge of the mobile phone fixing cover. A second clamping block is formed on the end of the extension block. Correspondingly, a second stop block matched with the second clamping block is formed on the upper inner wall of the opening of the mobile phone fixing cover. The second clamping block is buckled on the front side of the second stop block to detachably fix the upper edge of the mobile phone fixing cover on the upper edge of the front opening of the distance adjusting shell.

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