Display device

By setting mounting positions and grooves on the display device host and utilizing the snap-fit ​​structure of elastic blocks and connecting buckles, the problem of complex installation of existing display devices is solved, enabling quick installation and disassembly and improving the user experience.

CN223563861UActive Publication Date: 2025-11-18HUIZHOU GOLDMAN SACHS DAZHIXIAN TECH
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Patent Information

Application Number
CN202423321303.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2025-11-18
Estimated Expiration
2034-12-31

AI Technical Summary

Technical Problem

Existing display devices have complex installation methods, making them difficult to disassemble and install quickly, which affects the user experience.

Method used

The device employs a mounting position and groove on the main unit, with the mounting position containing a connecting first and second connection holes, and is equipped with an elastic block and protrusions. Combined with the snap-fit ​​structure of the connecting buckle and the mounting plate, it enables quick installation and disassembly.

Benefits of technology

It enables quick installation and removal of display devices, simplifies operation steps, and enhances user experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a display device, which relates to the technical field of display devices and comprises a host, a mounting plate and a connecting buckle, a mounting position and a groove are formed on the host, an elastic block is arranged in the groove, a salient point is formed on the elastic block and extends out of an opening of the groove, and the mounting position comprises a first connecting hole and a second connecting hole which are communicated with each other. The aperture of the first connecting hole is greater than that of the second connecting hole; clamping holes are formed in the mounting plate, the convex points are used for being clamped in the clamping holes, and the side, away from the host, of the mounting plate is used for being mounted on a wall; and the connecting buckle is mounted on the mounting plate and is clamped in the second connecting hole. The connecting buckle penetrates through the first connecting hole and extends into the inner cavity, the mounting plate abuts against the protruding point, the elastic block deforms towards the groove, the main machine slides, the connecting buckle is clamped into the second connecting hole, the elastic block recovers deformation, the protruding point is clamped into the clamping hole, and therefore the main machine is fixed. The display device can be quickly mounted and dismounted, and the use comfort is improved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to display device technical field, especially display device. BACKGROUND

[0002] Display device can be widely used in hotel room, home and so on, undoubtedly is extremely potential, along with the development of technology, the popularization of wisdom home concept, the rapid development of whole house intelligence solution, the market potential of display device is being gradually excited. Display device plays the interactive bridge of people and equipment in whole house intelligence solution, the installation mode of current display device generally adopts the mode of bolt and installs display device on the wall, and the installation mode is too complex, and is not good dismounting.

[0003] Therefore, it is necessary to provide a new display device to solve the above technical problems. CONTENT OF UTILITY MODEL

[0004] The utility model discloses a display device, aiming at improving the technical problem of complex installation of central control screen in the prior art.

[0005] To achieve the above object, the display device provided by the utility model, display device includes:

[0006] Host, the installation site and the recess are formed on the host, the recess is provided with the elastic block, the convex point is formed on the elastic block, the convex point sets up and stretches out the opening of the recess, the installation site includes the inner chamber, the first connecting hole and the second connecting hole that are communicated with each other are arranged on the installation site, and the first connecting hole and the second connecting hole are communicated with the inner chamber, and the aperture of the first connecting hole is greater than the aperture of the second connecting hole;

[0007] Mounting plate, the clamping hole is formed on the mounting plate, the convex point is used for clamping in the clamping hole, and the side of the mounting plate away from the host is used for installing on the wall body;

[0008] Connecting buckle, the connecting buckle is installed on the mounting plate, and the connecting buckle is clamped in the second connecting hole.

[0009] In the utility model, through setting installation site on host computer, and setting inner cavity in installation site, then setting first connecting hole and second connecting hole communicated with inner cavity on installation site, first connecting hole and second connecting hole are communicated, and the aperture of first connecting hole is set to be larger than the aperture of second connecting hole, then first connecting hole and second connecting hole are bored through, then setting a recess on host computer, and setting an elastic block on recess, setting convex point protruding recess on elastic block;Setting a clamping hole and connecting buckle on the mainboard;When the display device needs to be installed on the wall, the user first installs the mainboard on the wall, then aligns the first connecting hole with the connecting buckle, and makes the connecting buckle pass through the first connecting hole and extend into the inner cavity, in this process, the mounting plate abuts against the convex point, so that the elastic block deforms towards the recess, then the user slides the host computer downwards, so that the connecting buckle is clamped into the second connecting hole communicated with the first connecting hole, and the position is limited to move, the connecting buckle limits the host computer to continue to move downwards, at this time, the convex point is just aligned with the clamping hole, the elastic block restores the deformation, and the convex point is clamped into the clamping hole, so that the host computer is limited to move in the upward and downward directions, and the host computer is fixed;When disassembling, pry open the elastic block with a pry open tool, which can be a screwdriver or a blade, the elastic block deforms to make the convex point separate from the clamping hole, then the user pushes the host computer, so that the connecting buckle moves in the inner cavity, thereby separating the connecting buckle from the second connecting hole and entering the first connecting hole, after the connecting buckle separates from the second connecting hole and enters the first connecting hole, the user pulls the host computer away from the wall, and pulls out the connecting buckle from the inner cavity, so that the host computer can be separated from the mounting plate, so that the host computer can be quickly disassembled. The mounting and dismounting steps of the whole display device are simple and convenient, and the display device can be quickly mounted and dismounted. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creating labor.

[0011] Figure 1 The overall structure schematic diagram of the host computer of the utility model is provided;

[0012] Figure 2 The explosion diagram of the display device of the utility model is provided;

[0013] Figure 3 The connection schematic diagram of the host computer and the mounting plate of the utility model is provided;

[0014] Figure 4The overall structure schematic diagram of the mounting plate one embodiment provided by the utility model is shown in the figure.

[0015] Figure 5 The overall structure schematic diagram of the bottom shell one embodiment provided by the utility model is shown in the figure.

[0016] Explanation of the reference signs:

[0017] 100, display device; 1, host; 11, installation site; 111, inner cavity; 112, first connecting hole; 113, second connecting hole; 12, recess; 13, elastic block; 131, protruding point; 14, installation groove; 15, touch screen; 16, middle frame; 17, power board; 171, core plate; 18, back cover; 181, opening; 2, mounting plate; 21, clamping hole; 22, window; 23, first locking hole; 24, indicating part; 3, connecting buckle; 31, first connecting section; 32, second connecting section; 4, power component; 5, bottom shell; 51, second locking hole.

[0018] The realization, functional features and advantages of the utility model will be further described by combining with the embodiments and referring to the drawings. Specific implementation

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below by combining with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0020] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture, if the specific posture changes, the directional indications will also change accordingly.

[0021] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0022] At present, the installation of the central control screen on the market is generally installed by bolts or screws, so that the user installs or dismounts the central control screen by means of dismounting tool, needs to rotate the bolt or screw out or lock by means of dismounting tool through multiple times of user rotation, so as to dismount or install the central control screen, the whole installation and dismounting process is complex, which will lead to poor user experience, therefore, the applicant studies a display device capable of quick installation or dismounting.

[0023] Please refer to Figures 1 to 3 The utility model provides a kind of display device 100, including host computer 1, mounting plate 2 and connecting buckle 3, mounting site 11 and recess 12 are formed on host computer 1, recess 12 is provided with elastic block 13, convex point 131 is formed on elastic block 13, convex point 131 is arranged out of the opening of recess 12, mounting site 11 includes inner cavity 111, first connecting hole 112 and second connecting hole 113 are arranged on mounting site 11 and are interconnected, and first connecting hole 112 and second connecting hole 113 are interconnected with inner cavity 111, the aperture of first connecting hole 112 is greater than the aperture of second connecting hole 113;Mounting plate 2 is formed with clamping hole 21, convex point 131 is used for clamping in clamping hole 21, and the side of mounting plate 2 away from host computer 1 is used for installing in wall body;Connecting buckle 3 is installed in mounting plate 2, and connecting buckle 3 is clamped in second connecting hole 113.

[0024] In the embodiment, the installation site 11 is arranged on the main machine 1, the inner cavity 111 is arranged in the installation site 11, the first connecting hole 112 and the second connecting hole 113 which communicate with the inner cavity 111 are arranged on the installation site 11, the aperture of the first connecting hole 112 is larger than the aperture of the second connecting hole 113, the first connecting hole 112 and the second connecting hole 113 are bored through, the recess 12 is arranged on the main machine 1, the elastic block 13 is arranged on the recess 12, the convex point 131 which protrudes from the recess 12 is arranged on the elastic block 13, the clamping hole 21 and the connecting buckle 3 are arranged on the main plate, when the display device 100 needs to be installed on the wall, the user first installs the main plate on the wall, then aligns the first connecting hole 112 with the connecting buckle 3, and makes the connecting buckle 3 pass through the first connecting hole 112 and extend into the inner cavity 111, in the process, the installation plate 2 abuts against the convex point 131, so that the elastic block 13 deforms towards the recess 12, then the user slides the main machine 1 downwards, so that the connecting buckle 3 is clamped into the second connecting hole 113 which communicates with the first connecting hole 112, and the position movement is limited, the connecting buckle 3 limits the main machine 1 to continue to move downwards, at this time, the convex point 131 is just aligned with the clamping hole 21, the elastic block 13 restores the deformation, and the convex point 131 is clamped into the clamping hole 21, so that the movement of the main machine 1 in the upward and downward directions is limited, and the main machine 1 is fixed, when disassembling, the elastic block 13 is pried open by a prying tool, the prying tool can be a screwdriver or a blade, the elastic block 13 deforms to make the convex point 131 separate from the clamping hole 21, then the user pushes the main machine 1, so that the connecting buckle 3 moves in the inner cavity 111, thereby separating the connecting buckle 3 from the second connecting hole 113 and entering the first connecting hole 112, after the connecting buckle 3 separates from the second connecting hole 113 and enters the first connecting hole 112, the user pulls the main machine 1 away from the wall, so that the connecting buckle 3 is pulled out of the inner cavity 111, so that the main machine 1 can be separated from the installation plate 2, so that the disassembly is fast.

[0025] Please refer to Figures 2 to 4In an embodiment, the connecting buckle 3 comprises a first connecting section 31 and a second connecting section 32 connected with each other, the diameter of the first connecting section 31 is larger than that of the second connecting section 32, the diameter of the first connecting section 31 is larger than the hole diameter of the second connecting hole 113 and smaller than the hole diameter of the first connecting hole 112, and the second connecting section 32 is installed on the mounting plate 2 away from one end of the first connecting section 31 and is clamped in the second connecting hole 113. The connecting buckle 3 is provided with the first connecting section 31 and the second connecting section 32 with different sizes, the diameter of the first connecting section 31 is smaller than the hole diameter of the first connecting hole 112; when the display device 100 needs to be installed on the wall, the user first installs the mounting plate on the wall, then aligns the first connecting hole 112 with the connecting buckle 3, and makes the first connecting section 31 and the second connecting section 32 both pass through the first connecting hole 112 and extend into the inner cavity 111, since the diameters of the first connecting section 31 and the second connecting section 32 are both smaller than the hole diameter of the first connecting hole 112, the connecting buckle 3 can move in the first connecting hole 112, in this process, the mounting plate 2 abuts against the convex point 131, and the elastic block 13 deforms towards the recess 12, then the user slides the main machine 1 downwards, so that the first connecting section 31 moves in the inner cavity 111, and the second connecting section 32 is clamped into the second connecting hole 113 which communicates with the first connecting hole 112, and the positions are limited from moving, the connecting buckle 3 limits the main machine 1 from moving downwards further, since the diameter of the first connecting section 31 is larger than that of the second connecting hole 113, when someone pulls the main machine 1, the first connecting section 31 cannot be pulled out of the second connecting hole 113, so that the main machine 1 cannot be pulled out from the front and back directions out of the second connecting hole 113, at this time, the convex point 131 is just aligned with the clamping hole 21, the elastic block 13 restores the deformation, and the convex point 131 is clamped into the clamping hole 21, so that the movement of the main machine 1 in the up and down directions is limited, and the main machine 1 is fixed; when it needs to be disassembled, a prying tool such as a screwdriver or a blade is used to pry open the elastic block 13, the elastic block 13 deforms to make the convex point 131 separate from the clamping hole 21, then the user pushes the main machine 1, so that the first connecting section 31 moves in the inner cavity 111, and the second connecting section 32 separates from the second connecting hole 113 and enters the first connecting hole 112, after the second connecting section 32 separates from the second connecting hole 113 and enters the first connecting hole 112, the user pulls the main machine 1 away from the wall, so that the first connecting section 31 can be pulled out of the inner cavity 111, and the main machine 1 separates from the mounting plate 2, so that the disassembly is realized quickly; through the above structure, the movement of the main machine 1 towards or away from the wall is limited, and the separation of the main machine 1 from the mounting plate 2 is further prevented.

[0026] Please refer to Figures 1 to 4In an embodiment, the number of the mounting positions 11 is equal to the number of the connecting buckles 3, and the mounting positions 11 and the connecting buckles 3 are arranged one by one. By arranging the mounting positions 11 and the connecting buckles 3, and arranging the mounting positions 11 in a rectangular distribution, the four corners of the mainframe 1 and the mounting plate 2 can be fixed, and the mainframe 1 can be further prevented from being separated from the mounting plate 2.

[0027] Please refer to Figure 1 and Figure 2 In an embodiment, the mainframe 1 is formed with a mounting groove 14, the mounting positions 11 and the recesses 12 are arranged in the mounting groove 14, and the mounting plate 2 is slidingly mounted in the mounting groove 14. When the display device 100 needs to be mounted on a wall, the user first mounts the mounting plate on the wall, then aligns the first connecting hole 112 with the connecting buckle 3, so that the first connecting section 31 and the second connecting section 32 are both arranged in the first connecting hole 112, and the mainframe 1 is slidingly mounted on the mounting plate 2 through the mounting groove 14. Since the diameters of the first connecting section 31 and the second connecting section 32 are both smaller than the diameter of the first connecting hole 112, the connecting buckle 3 can move in the first connecting hole 112. In this process, the mounting plate 2 abuts against the protrusion 131, and the elastic block 13 is deformed towards the recess 12. Then, the user slides the mainframe 1 downwards, so that the second connecting section 32 is arranged in the second connecting hole 113 which is in communication with the first connecting hole 112, and the position is limited. The connecting buckle 3 limits the mainframe 1 from moving downwards. Since the diameter of the first connecting section 31 is larger than the diameter of the second connecting hole 113, when someone pulls the mainframe 1, the first connecting section 31 cannot be pulled out of the second connecting hole 113, so the mainframe 1 cannot be pulled out from the front and back directions of the second connecting hole 113. At this time, the protrusion 131 is just aligned with the clamping hole 21, the elastic block 13 restores the deformation, and the protrusion 131 is clamped in the clamping hole 21, so that the mainframe 1 is limited in the up and down directions, and the mainframe 1 is fixed. When dismounting, a prying tool such as a screwdriver or a blade is used to pry open the elastic block 13. The elastic block 13 is deformed to make the protrusion 131 separate from the clamping hole 21. Then, the user pushes the mainframe 1, so that the second connecting section 32 is separated from the second connecting hole 113 and arranged in the first connecting hole 112. After the second connecting section 32 is separated from the second connecting hole 113 and arranged in the first connecting hole 112, the user pulls the mainframe 1 away from the wall, so that the mainframe 1 is separated from the mounting plate 2, and the display device 100 can be quickly dismounted. By arranging the mounting groove 14, the mounting plate 2 can be slidingly mounted in the mounting groove 14, so that when the user moves the mainframe 1 up and down, the deviation can be prevented.

[0028] Please refer to Figure 1 and Figure 2In an embodiment, the display device 100 further comprises a power component 4, the power component 4 is installed in the installation slot 14, the mounting plate 2 is formed with a window 22, the power component 4 is placed in the window 22, the distance between the power component 4 and the upper edge and the lower edge of the window 22 is equal, and both are greater than the distance between the center of the first connecting hole 112 and the center of the second connecting hole 113. Specifically, the power component 4 is used to supply power to the host 1. When it is necessary to install the display device 100 on the wall, the user first installs the mounting plate on the wall, then aligns the first connecting hole 112 with the connecting buckle 3, so that the first connecting segment 31 and the second connecting segment 32 are both inserted into the first connecting hole 112, the power component 4 is just located in the window 22, and the host 1 is slidably installed on the mounting plate 2 through the installation slot 14. Since the diameters of the first connecting segment 31 and the second connecting segment 32 are both smaller than the diameter of the first connecting hole 112, the connecting buckle 3 can move in the first connecting hole 112. During this process, the mounting plate 2 abuts against the protrusion 131, so that the elastic block 13 deforms towards the groove 12. Then the user slides the host 1 downward, so that the second connecting segment 32 is clamped into the second connecting hole 113 which is in communication with the first connecting hole 112, and the position movement is limited. The connecting buckle 3 limits the host 1 from moving downward further. Since the diameter of the first connecting segment 31 is greater than the diameter of the second connecting hole 113, the first connecting segment 31 cannot be pulled out of the second connecting hole 113 when someone pulls the host 1. Thus, the host 1 cannot be pulled out from the front and rear directions out of the second connecting hole 113. At this time, the protrusion 131 is just aligned with the clamping hole 21, and the elastic block 13 restores the deformation to clamp the protrusion 131 into the clamping hole 21. Thus, the host 1 is limited to move in the up and down directions, and the host 1 is fixed. At this time, the distance between the power component 4 and the upper edge and the lower edge of the window 22 is equal, and the distance between the power component 4 and the upper edge and the lower edge of the window 22 is both set to be greater than the distance between the center of the first connecting hole 112 and the center of the second connecting hole 113. Thus, during the process of sliding the host 1, the power component 4 does not interfere with the mounting plate 2, which affects the installation and disassembly of the display device 100.

[0029] Please refer to Figure 3 Further, the display device 100 further comprises a touch screen 15, a middle frame 16, a power board 17 and a back cover 18. The middle frame 16 is provided with a core board 171. The power board 17 is electrically connected with the power component 4 and the core board 171. The touch screen 15, the middle frame 16, the power board 17 and the back cover 18 are stacked in sequence. The installation slot 14 is arranged on the back cover 18, and the back cover 18 is formed with an opening 181. The installation site 11 is arranged on the middle frame 16, and the installation site 11 extends out of the opening 181 to the back cover 18. The power component 4 is arranged on the bottom of the installation slot 14. Such a structure can combine the detachable components to form the host 1. Thus, the host 1 can be individually disassembled, which is convenient for the maintenance of the host 1.

[0030] In an embodiment, the gap between the two sides of the mounting plate 2 and the two side edges of the mounting groove 14 is equal, and is greater than or equal to 0.1 mm. The width of the mounting groove 14 is slightly greater than the mounting plate 2, so that the mounting plate 2 is slidably mounted in the mounting groove 14.

[0031] In an embodiment, the depth of the mounting groove 14 is greater than or equal to the thickness of the mounting plate 2. The depth of the mounting groove 14 is set to be greater than the thickness of the mounting plate 2, so that the mounting plate 2 does not protrude from the mounting groove 14, and is more aesthetically pleasing in appearance.

[0032] Referring to Figure 5 In an embodiment, the display device 100 further comprises a bottom shell 5 mounted on the side of the mounting plate 2 away from the host 1, and the bottom shell 5 is used to cover the power supply component 4. By providing the bottom shell 5, the power supply component 4 can be protected from damage, and further, by embedding the bottom shell 5 in the wall, the space occupied by the display device 100 can be reduced.

[0033] Referring to Figure 4 and Figure 5 In an embodiment, the mounting plate 2 is formed with a first locking hole 23, the bottom shell 5 is formed with a second locking hole 51, and the display device 100 further comprises a locking member that is mounted in the second locking hole 51 through the first locking hole 23. Specifically, the bottom shell 5 is embedded in the wall, then the mounting plate 2 is mounted on the wall, then the power supply component 4 is inserted into the bottom shell 5 through the window 22, the locking member is inserted through the first locking hole 23, and then locked in the second locking hole 51, so that the host 1, the mounting plate 2 and the bottom shell 5 are mounted in one body, so that the mounting firmness of the bottom shell 5 can be improved.

[0034] Referring to Figure 2 and Figure 4 In an embodiment, the side of the mounting plate 2 facing the host 1 is provided with an indicating member 24. By providing the indicating member 24 on the mounting plate 2, the user is prompted on how to move the host 1 to achieve the installation and disassembly of the host 1, and the user can operate according to the indication of the indicating member 24.

[0035] The above description is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the contents of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A display device, characterized by comprising: The utility model provides a display device, which comprises a host, a mounting plate, a connecting buckle and a bottom shell. The host is provided with a mounting site and a recess, the recess is provided with an elastic block, the elastic block is provided with a convex point, the convex point extends out of the opening of the recess, the mounting site comprises an inner cavity, the mounting site is provided with a first connecting hole and a second connecting hole which are in communication with each other, and the first connecting hole and the second connecting hole are in communication with the inner cavity, the diameter of the first connecting hole is larger than that of the second connecting hole. The mounting plate is provided with a clamping hole, the convex point is used for clamping the clamping hole, and the side of the mounting plate away from the host is used for mounting on a wall. The connecting buckle is mounted on the mounting plate and clamped in the second connecting hole.

2. The display device of claim 1, wherein, The connecting buckle comprises a first connecting segment and a second connecting segment which are connected to each other, the diameter of the first connecting segment is larger than that of the second connecting segment, the diameter of the first connecting segment is larger than that of the second connecting hole and smaller than that of the first connecting hole, and the second connecting segment is mounted on the mounting plate away from the first connecting segment.

3. The display device according to any one of claims 1 or 2, wherein The number of the mounting sites is equal to that of the connecting buckles, and they are arranged one by one.

4. The display device of claim 3, wherein, The host is provided with a mounting groove, the mounting site and the recess are arranged in the mounting groove, and the mounting plate is slidingly mounted in the mounting groove.

5. The display device of claim 4, wherein, The display device further comprises a power supply component, the power supply component is mounted in the mounting groove, the mounting plate is provided with a window, the power supply component is arranged in the window, the distance between the power supply component and the upper and lower edges of the window is equal and larger than the distance between the centers of the first connecting hole and the second connecting hole.

6. The display device of claim 4, wherein, The distance between the two sides of the mounting plate and the two side edges of the mounting groove is equal and larger than or equal to 0.1 mm.

7. The display device according to claim 4, wherein The depth of the mounting groove is larger than or equal to the thickness of the mounting plate.

8. The display device of claim 5, wherein, The display device further comprises a bottom shell, the bottom shell is mounted on the side of the mounting plate away from the host, and the bottom shell is used for covering the power supply component.

9. The display device of claim 8, wherein, The mounting plate is provided with a first locking hole, the bottom shell is provided with a second locking hole, and the display device further comprises a locking piece which is mounted in the second locking hole through the first locking hole.

10. The display device according to claim 3, wherein The side of the mounting plate facing the host is provided with an indicating piece.