CN210454465U

CN210454465U - Duplex screen structure and mounting structure thereof

Info

Publication number: CN210454465U
Application number: CN201920972778.7U
Authority: CN
Inventors: 冷德龙; 王淑琴; 赵国兴; 关牧野; 蔡旭; 杨宇
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-05-05
Anticipated expiration: 2029-06-26

Abstract

The utility model discloses a pair screen structure and mounting structure thereof belongs to automobile parts technical field. The double-linkage screen structure comprises a bottom shell and a liquid crystal screen assembly arranged on the bottom shell, wherein the liquid crystal screen assembly comprises a liquid crystal screen fixing plate, a liquid crystal screen, a glass cover plate and a flexible touch membrane which are sequentially arranged on the liquid crystal screen fixing plate along the normal direction; the liquid crystal screen fixing plate is connected with the bottom shell; the liquid crystal display panel comprises a liquid crystal display panel fixing plate and two liquid crystal display panels, wherein the two liquid crystal display panels are arranged in parallel along the length direction of the liquid crystal display panel fixing plate. A mounting structure of a double-linkage screen structure is configured to be capable of mounting the double-linkage screen structure on an instrument cover. The utility model discloses a be provided with two LCD screens that parallel, realized the integral type design of instrument and well accuse screen, be favorable to the optimization of automobile body inner space and make things convenient for driver's operation.

Description

Duplex screen structure and mounting structure thereof

Technical Field

The utility model relates to an automobile parts technical field especially relates to a pair screen structure and mounting structure thereof.

Background

Along with the car towards the direction development of intellectuality, networking, car infotainment system is to the digitization gradually, liquid crystal ization development, high definition, the application of jumbo size LCD screen on the car is more and more, but the instrument of current automobile body and well accuse screen are the form that mostly still separates, the driver need observe and control two screens that are located different positions and set up, be unfavorable for optimizing the inside molding space of automobile body promptly, also do not benefit to driver's observation and operation, consequently, it provides a pair screen structure and mounting structure and solves above-mentioned problem to wait urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pair screen structure can be shielded integrated formula structure as an organic whole with well accuse with the instrument, is favorable to the optimization of automobile body inner space and makes things convenient for driver's operation.

Another object of the utility model is to provide a pair mounting structure of screen structure can realize the firm assembly of pair screen structure and instrument mask.

In order to realize the purpose, the following technical scheme is provided:

a double-linked screen structure comprises a bottom shell and a liquid crystal screen assembly arranged on the bottom shell, wherein the liquid crystal screen assembly comprises a liquid crystal screen fixing plate, a liquid crystal screen, a glass cover plate and a flexible touch membrane which are sequentially arranged on the liquid crystal screen fixing plate along the normal direction; the liquid crystal screen fixing plate is connected with the bottom shell; the liquid crystal display panel comprises a liquid crystal display panel fixing plate and two liquid crystal display panels, wherein the two liquid crystal display panels are arranged in parallel along the length direction of the liquid crystal display panel fixing plate.

Preferably, the dual-screen structure further comprises two transition clamping shells, and the two transition clamping shells are arranged on two sides of the bottom shell along the length direction; one end of the transition clamping shell is provided with an opening, the other end of the transition clamping shell is closed, the bottom shell is clamped at the opening end of the transition clamping shell, and the closed end of the transition clamping shell and the outer wall of the liquid crystal screen fixing plate are in smooth transition.

Preferably, one of the transition clamping shell and the bottom shell is provided with a positioning pin, and the other one is provided with a positioning hole, and the positioning pin is inserted into the positioning hole.

Preferably, an opening is formed in one side of the bottom shell, the liquid crystal screen fixing plate is connected with the side wall of the opening end of the bottom shell, and a PCB is arranged between the bottom shell and the liquid crystal screen fixing plate.

Preferably, the liquid crystal display fixing plate is provided with a wire arranging hole, and a wire arranging of the PCB passes through the wire arranging hole to be in communication connection with the liquid crystal display.

The mounting structure of the double-linkage structure is configured to be capable of mounting the double-linkage structure on an instrument cover, and comprises a plurality of first buckles arranged on the bottom shell and a first clamping groove arranged on the instrument cover, wherein the first buckles are clamped in the first clamping groove; the first buckle is provided with at least three, and at least three first buckle is along the length direction of drain pan is the staggered distribution.

Preferably, the first buckle comprises a bottom plate and a support body vertically arranged on the bottom plate, and the bottom plate is connected with the bottom shell; elastic clamping pieces are arranged on two sides of the supporting body, one end of each elastic clamping piece is connected with the supporting body, the other end of each elastic clamping piece is a free end, and the free ends of the elastic clamping pieces are configured to always have a trend of being away from the supporting body; the side wall of the first clamping groove is provided with an insertion hole, the supporting body extends out of the insertion hole, and the elastic clamping piece is abutted to the side wall of the insertion hole.

Preferably, the free end of the elastic card is folded to form an accommodating groove, and the side wall of the accommodating groove is abutted to the side wall of the insertion hole.

Preferably, the first fasteners are divided into two groups, the elastic clamping pieces of one group of first fasteners are distributed on two sides of the supporting body along the length direction of the bottom case, and the elastic clamping pieces of the other group of first fasteners are distributed on two sides of the supporting body along the width direction of the bottom case.

Preferably, the upper part of the instrument cover is provided with a cap peak, the top end of the bottom shell is provided with a plurality of mounting rib plates, one of the mounting rib plates and the cap peak is provided with a second buckle, the other mounting rib plate and the cap peak are provided with a second clamping groove, and the second buckle is clamped in the second clamping groove; the first buckle and the second buckle are identical in structure.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model realizes the integrated design of the instrument and the central control screen by arranging two parallel liquid crystal screens and respectively using the liquid crystal screens as the instrument and the central control screen, thereby being beneficial to the optimization of the internal space of the vehicle body and facilitating the operation of a driver; the utility model provides a mode that mounting structure passes through buckle and draw-in groove joint realizes the assembly of pair screen structure and instrument mask, and the buckle adopts the mode reinforcing assembly's of staggered arrangement steadiness simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of a duplex screen structure at a first viewing angle according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a duplex screen structure at a second viewing angle according to an embodiment of the present invention;

fig. 3 is an exploded schematic view of a dual-panel structure according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a transition card shell according to an embodiment of the present invention;

fig. 5 is an installation schematic diagram of a double-linkage-screen structure and an instrument cover in the embodiment of the present invention;

FIG. 6 is an enlarged partial schematic view at A of FIG. 5;

fig. 7 is a schematic structural view of the first buckle in the embodiment of the present invention;

fig. 8 is a schematic structural view of a brim according to an embodiment of the present invention.

Reference numerals:

100-duplex screen configuration; 200-an instrument mask; 201-a first card slot; 2011-jack; 202-a second opening; 300-brim of a hat; 301-a second clasp;

1-a bottom shell; 11-a first buckle; 111-a backplane; 112-a support; 113-a flexible card; 1131-a receiving groove; 12-a first mounting rib plate; 13-second mounting rib plate; 14-a third mounting rib plate;

2-a liquid crystal screen assembly; 21-a liquid crystal screen fixing plate; 22-a liquid crystal screen; 23-a glass cover plate; 24-a flexible touch sensitive film; 25-a PCB board; 26-a connector; 27-chrome plating strip;

3-transition clamping shell; 31-positioning holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

The embodiment discloses a double-linkage structure, which is mainly used in an automobile, and referring to fig. 1-3, the double-linkage structure 100 specifically comprises a bottom shell 1 and a liquid crystal screen assembly 2 arranged on the bottom shell 1, wherein the liquid crystal screen assembly 2 comprises a liquid crystal screen fixing plate 21, a liquid crystal screen 22, a glass cover plate 23 and a flexible touch membrane 24 which are sequentially arranged on the liquid crystal screen fixing plate 21 along a normal direction; the liquid crystal screen fixing plate 21 is connected with the bottom shell 1; two liquid crystal panels 22 are provided, and the two liquid crystal panels 22 are arranged in parallel along the longitudinal direction of the liquid crystal panel fixing plate 21. The two liquid crystal screens 22 of this embodiment are used as instrument and well accuse screen respectively, and then through being provided with two liquid crystal screens 22 that parallel, have realized the integral type design of instrument and well accuse screen, are favorable to the optimization of automobile body inner space and make things convenient for driver's operation.

The liquid crystal panel 22 is disposed on the liquid crystal panel fixing plate 21, and the mounting method may be selected from a glue bonding method or a screw fixing method, but is not limited to this method. The glass cover plate 23 and the liquid crystal screen 22 are optionally bonded by optical cement. The flexible touch film 24 has a touch function, so that a user can conveniently perform touch operation, and the flexible touch film 24 and the glass cover plate 23 are glued by optical glue. Optical cement can adopt OCA (optical Clear adhesive) type optical cement. Furthermore, the size of the glass cover plate 23 is designed to cover the whole liquid crystal screen fixing plate 21, meanwhile, the overlapped part of the glass cover plate 23 and the liquid crystal screen 22 is attached by optical cement, and the part which is not overlapped with the liquid crystal screen 22 is sprayed into black, so that when the liquid crystal screen 22 is shielded, the whole screen of the duplex screen structure 100 presents a full black effect, and the product visibility is improved; compare and to adopt the mode of air laminating to connect between traditional glass apron 23 and the LCD screen 22, adopt the glued mode of optical cement to make the complete black effect of screen better in this embodiment, the boundary between glass apron 23 and the LCD screen 22 is more hidden and be difficult for perceiving.

Optionally, the liquid crystal panel fixing plate 21 and the bottom case 1 are fixed by screws. The liquid crystal panel assembly 2 further includes a PCB board 25. One side of drain pan 1 is equipped with the opening, lateral wall fixed connection of LCD screen fixed plate 21 and drain pan 1 open end, and then makes to have certain space between drain pan 1 and the LCD screen fixed plate 21, and the PCB board 25 of LCD screen 22 just locates in this space to optionally fix on LCD screen fixed plate 21 through the screw, play the purpose of further compressing duplex screen structure 100 volumes. Furthermore, a wire arranging hole is formed in the liquid crystal screen fixing plate 21, and a wire arranged on the PCB 25 passes through the wire arranging hole to be in communication connection with the liquid crystal screen 22. The number of the PCB boards 25 is also two, and one PCB board 25 is connected to each liquid crystal panel 22. The PCB 25 is connected to the control system of the vehicle through the connector 26, so as to display and interact information on the entire display screen, and facilitate a user to transmit an operation command to the control system in a touch manner. Further, a first opening is formed on the side wall of the bottom shell 1, and the connector 26 extends out of the first opening to be connected with a control system of the automobile. Optionally, drain pan 1 is cast aluminium material, and the quality is light, does benefit to automobile parts to the development of lightweight direction.

Optionally, the glass cover plate 23 is made of vehicle-grade glass to meet the requirement of high strength; further, an explosion-proof film may be attached to the surface of the glass cover plate 23 to improve the strength of the glass cover plate 23. Further, since the glass cover plate 23 is made of glass, the outer periphery thereof needs to be subjected to anti-glare, anti-reflection, and anti-fingerprint treatments. Optionally, the liquid crystal panel assembly 2 further includes a chrome plating strip 27, and the chrome plating strip 27 is disposed around an outer edge of the liquid crystal panel fixing plate 21 and mainly performs a decoration function to improve the aesthetic property of the duplex panel structure 100.

During specific implementation, the liquid crystal screen assembly 2 is assembled, then the liquid crystal screen fixing plate 21 is connected with the bottom shell 1 to assemble the whole double-screen structure 100, and finally the double-screen structure 100 is required to be fixedly connected with the instrument cover 200 of the vehicle body. Since the dimension of the lcd panel fixing plate 21 in the length direction is greater than that of the bottom case 1, which is not beneficial to the assembly of the dual-screen structure 100 and the meter cover 200, referring to fig. 2 and 3, the dual-screen structure 100 further includes two transition clamping cases 3, and the two transition clamping cases 3 are disposed on two sides of the bottom case 1 in the length direction. Transition card shell 3 can be connected with drain pan 1 and LCD screen fixed plate 21 simultaneously, plays the effect of strengthening fixed drain pan 1 and LCD screen fixed plate 21. Specifically, one end of the transition clamping shell 3 is provided with an opening, the other end is closed, and the bottom shell 1 is clamped at the opening end of the transition clamping shell 3 and then fixed by screws; meanwhile, the closed end of the transition clamping shell 3 is in smooth transition with the outer wall of the liquid crystal screen fixing plate 21, so that the assembly of the duplex screen structure 100 and the instrument mask 200 is convenient to realize. Optionally, one of the transition card shell 3 and the bottom shell 1 is provided with a positioning pin, and the other is provided with a positioning hole, and the positioning pin is inserted into the positioning hole to realize accurate positioning of the transition card shell 3 during assembly. Referring to fig. 4, in the present embodiment, a positioning hole 31 is formed on the transition card housing 3, and a positioning pin is formed on the bottom housing 1. Optionally, the transition card housing 3 is color textured to conform to the color texture of the entire instrument mask 200.

It should be noted that, after the dual-panel structure 100 provided in this embodiment is assembled, the entire dual-panel structure 100 should be protected by packaging, and the dustproof and moisture-proof capability should be tested. According to the specification of the IP (ingress protection) protection level system, the front side of the dual-panel structure 100 of the present embodiment should satisfy the protection level of IP5K 4; the rear side needs to meet the protection rating of IP20, i.e. to allow dust to enter from the rear side, but not to penetrate to the front of the liquid crystal panel 22. The front side referred to herein means a side on which a user can touch operation, and the rear side means a side connected to the meter cover 200.

Referring to fig. 2, 5 and 6, the dual-linkage structure 100 has a large size, so that a positioning manner and a fixing manner need to be considered when assembling with the instrument mask 200 to achieve a stable connection and avoid shaking. Therefore, the present embodiment further discloses a mounting structure of the dual-linkage structure 100, which is used for mounting and fixing the dual-linkage structure 100 and the instrument cover 200. Specifically, this mounting structure is including locating a plurality of first buckles 11 on drain pan 1 to locate first draw-in groove 201 on instrument mask 200, through first buckle 11 and first draw-in groove 201 joint, accomplishes the preliminary fixed of pair screen structure 100 and instrument mask 200. Further, first buckle 11 sets up to at least three, in order to guarantee the stability of joint, makes first buckle 11 be crisscross distribution along the length direction of drain pan 1, and first buckle 11 does not set up along same straight line promptly. In this embodiment, referring to fig. 2, the numbers of the first buckles 11 and the first card slots 201 are optionally set to seven. Specifically, referring to fig. 6, the first buckle 11 includes a bottom plate 111 and a support 112 vertically disposed on the bottom plate 111, the bottom plate 111 is optionally fixedly connected with the bottom case 1 through screws, both sides of the support 112 are provided with elastic clamping pieces 113, one end of each elastic clamping piece 113 is connected with the support 112, the other end is a free end, and the free end of each elastic clamping piece 113 is configured to have a tendency to be away from the support 112 all the time. Correspondingly, referring to fig. 6, a jack 2011 is disposed on a side wall of the first locking groove 201 disposed on the meter cover 200, when the first buckle 11 is locked in the first locking groove 201, the supporting body 112 of the first buckle 11 is extended from the jack 2011 of the first locking groove 201, and meanwhile, the elastic clamping piece 113 abuts against a side wall of the jack 2011, so that the first buckle 11 is tightly locked in the first locking groove 201 under the elastic action of the elastic clamping piece 113. Further, the free end of the elastic clip 113 is folded to form the accommodating groove 1131, when the support body 112 moves to the side wall of the accommodating groove 1131 to abut against the side wall of the insertion hole 2011, the clamping is completed, and the side wall of the accommodating groove 1131 can limit the further movement of the first buckle 11. Meanwhile, under the elastic force of the elastic card 113, when the sidewall of the insertion hole 2011 abuts against the accommodation groove 1131, a sound is generated, so that a person can know whether the first buckle 11 is clamped in place in time. Further, referring to fig. 6, a second opening 202 is formed in the instrument cover 200, and a harness end of the vehicle control system may be connected to the connector 26 of the PCB 25 through the second opening 202 to complete signal transmission.

For the first buckle 11, two elastic clamping pieces 113 can be disposed on two sides of the supporting body 112 along the length direction of the bottom case 1, and can also be disposed on two sides of the supporting body 112 along the width direction, the former mainly limits the displacement of the dual-panel structure 100 along the length direction of the bottom case 1, and the latter mainly limits the displacement of the dual-panel structure 100 along the width direction of the bottom case 1. Therefore, in this embodiment, referring to fig. 2 again, the plurality of first fasteners 11 are divided into two groups, the elastic fastening pieces 113 of one group of first fasteners 11 are distributed on two sides of the supporting body 112 along the length direction of the bottom case 1, and the elastic fastening pieces 113 of the other group of first fasteners 11 are distributed on two sides of the supporting body 112 along the width direction of the bottom case 1, so as to fully fix the dual-screen structure 100.

Further, referring to fig. 1 and 2, the mounting structure further includes a plurality of first mounting rib plates 12 arranged on the upper portion of the bottom shell 1 and screw holes arranged on the instrument cover 200, through holes are formed in the first mounting rib plates 12, and after the duplex screen structure 100 is connected to the instrument cover 200 in a clamped manner, screws sequentially pass through the first mounting rib plates 12 and the screw holes of the instrument cover 200, so that the purpose of further fixing the bottom shell 1 and the instrument cover 200 is achieved. In this embodiment, the number of the first mounting rib plates 12 and the number of the threaded holes are four. In specific implementation, the length direction and the width direction of the bottom shell 1 can respectively correspond to the transverse direction of the automobile and the direction perpendicular to the ground, so as to limit the displacement of the duplex screen structure 100 along the two directions; meanwhile, the screws on the first mounting rib plates 12 can be arranged along the longitudinal direction of the automobile to limit the displacement of the double-linkage screen structure 100 in the direction, the double-linkage screen structure 100 can be stably arranged on the instrument cover 200 through displacement limitation in three different directions, and the reliability of the double-linkage screen structure 100 is improved.

Further, referring to fig. 5, the top of the instrument cover 200 is provided with a visor 300, and the visor 300 can further achieve an anti-glare effect, and meanwhile, information on the screen is prevented from being projected onto the front windshield glass to interfere with driving sight. Therefore, the top end of the bottom shell 1 can be further provided with a plurality of second mounting rib plates 13, one of the second mounting rib plates 13 and the visor 300 is provided with a second buckle 301, the other one of the second mounting rib plates 13 and the visor 300 is provided with a second clamping groove, the double-screen structure 100 is fixedly connected with the visor 300 through the clamping connection of the second buckle 301 and the second clamping groove, and the connection relation between the double-screen structure 100 and the instrument cover 200 is further stabilized. In this embodiment, referring to fig. 2, the second fastening groove is formed in the second mounting rib plate 13, referring to fig. 8, the second buckle 301 is formed on the visor 300, and seven second mounting rib plates 13 are optionally provided. Optionally, the second catch 301 and the second card slot may have the same structure as the first catch 11 and the first card slot 201, respectively.

Alternatively, on some vehicle bodies, the lower portion of the double-screen structure 100 needs to be connected and fixed with a steering wheel sheath. In order to achieve the above purpose, referring to fig. 1 and 2, a plurality of third mounting rib plates 14 are disposed at the lower portion of the bottom case 1, and the third mounting rib plates 14 may be connected with the steering wheel sheath by fastening screws or by fastening buckles with clamping grooves, which is not described herein again.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. The duplex screen structure is characterized by comprising a bottom shell (1) and a liquid crystal screen assembly (2) arranged on the bottom shell (1), wherein the liquid crystal screen assembly (2) comprises a liquid crystal screen fixing plate (21), a liquid crystal screen (22) arranged on the liquid crystal screen fixing plate (21) in sequence along a normal direction, a glass cover plate (23) and a flexible touch membrane (24); the liquid crystal screen fixing plate (21) is connected with the bottom shell (1); the liquid crystal display panel comprises two liquid crystal display screens (22), wherein the two liquid crystal display screens (22) are arranged in parallel along the length direction of a liquid crystal display screen fixing plate (21).

2. The dual-screen structure according to claim 1, further comprising two transition clamping shells (3), wherein the two transition clamping shells (3) are arranged on two sides of the bottom shell (1) along the length direction; one end of the transition clamping shell (3) is provided with an opening, the other end of the transition clamping shell is closed, the bottom shell (1) is clamped at the opening end of the transition clamping shell (3), and the closed end of the transition clamping shell (3) is in smooth transition with the outer wall of the liquid crystal screen fixing plate (21).

3. The duplex screen structure according to claim 2, wherein one of the transition card shell (3) and the bottom shell (1) is provided with a positioning pin, and the other is provided with a positioning hole, and the positioning pin is inserted into the positioning hole.

4. The dual screen structure of claim 1, wherein an opening is formed at one side of the bottom case (1), the liquid crystal panel fixing plate (21) is connected to a side wall of the opening end of the bottom case (1), and a PCB (25) is accommodated in a space between the bottom case (1) and the liquid crystal panel fixing plate (21).

5. The duplex screen structure of claim 4, wherein the LCD screen fixing plate (21) is provided with a cable arranging hole, and a cable of the PCB (25) passes through the cable arranging hole to be in communication connection with the LCD screen (22).

6. A mounting structure of a double-linkage structure, which is configured to be able to mount the double-linkage structure of any one of claims 1 to 5 on an instrument cover (200), the mounting structure comprising a first buckle (11) arranged on the bottom shell (1) and a first clamping groove (201) arranged on the instrument cover (200), wherein the first buckle (11) is clamped in the first clamping groove (201); the number of the first buckles (11) is at least three, and the at least three first buckles (11) are distributed in a staggered mode along the length direction of the bottom shell (1).

7. The mounting structure according to claim 6, wherein the first catch (11) comprises a base plate (111) and a support body (112) vertically arranged on the base plate (111), the base plate (111) being connected with the bottom shell (1); elastic clamping pieces (113) are arranged on two sides of the supporting body (112), one end of each elastic clamping piece (113) is connected with the supporting body (112), the other end of each elastic clamping piece is a free end, and the free ends of the elastic clamping pieces (113) are configured to have a trend of being away from the supporting body (112) all the time; a jack (2011) is formed in the side wall of the first clamping groove (201), the supporting body (112) extends out of the jack (2011), and the elastic clamping piece (113) is abutted to the side wall of the jack (2011).

8. The mounting structure according to claim 7, wherein the free end of the elastic tab (113) is folded to form a receiving groove (1131), and a side wall of the receiving groove (1131) abuts against a side wall of the insertion hole (2011).

9. The mounting structure according to claim 7, wherein the first fasteners (11) are divided into two groups, the elastic tabs (113) of one group of first fasteners are distributed on two sides of the supporting body (112) along the length direction of the bottom case (1), and the elastic tabs (113) of the other group of first fasteners are distributed on two sides of the supporting body (112) along the width direction of the bottom case (1).

10. The mounting structure according to claim 6, wherein a visor (300) is arranged at the upper part of the instrument cover (200), a plurality of mounting rib plates are arranged at the top end of the bottom shell (1), one of the mounting rib plates and the visor (300) is provided with a second buckle (301), the other one is provided with a second clamping groove, and the second buckle (301) is clamped in the second clamping groove; the first buckle (11) and the second buckle (301) have the same structure.