A monitoring instrument for head mounted display device and a method of using the same

Abstract

The present invention discloses a monitoring instrument and a method for using a head-mounted display device, including a helmet, wherein both left and right ends of the helmet are fixedly installed with a locking assembly, a sliding assembly is fixedly installed inside the locking assembly located at the left end of the helmet, and a mounting assembly is fixedly installed at one end of the sliding assembly away from the locking assembly. The monitoring instrument and method for using a head-mounted display device described in the present invention can be rotated and adjusted to a suitable angle for use according to the angle at which the staff needs to watch the monitoring screen, through the provided locking assembly, sliding assembly, mounting assembly and shading assembly, and the positions for installing the sliding assembly and the mounting assembly can be selected according to the staff's usage habits, and the shading assembly can block sunlight to prevent the screen of the monitoring instrument from reflecting light, which is inconvenient for the staff to watch, and the operation method is also relatively simple and convenient for users.

Description

Technical Field

[0001] The present invention relates to the technical field of monitoring instruments, and in particular to a monitoring instrument for a head-mounted display device and a method for using the same. Background Art

[0002] With the development of China's industrialization process, monitoring instruments will be used in various industries. The most important thing is that many new measuring instruments will be used in the environmental testing department. Instrument manufacturers have also increased their investment in the research and development of new products in order to develop more humane and higher-precision testing instruments to facilitate people's use.

[0003] However, the current monitoring instruments with head-mounted display devices are cumbersome to operate and inconvenient for staff to use. During use, light will be irradiated and the display screen will reflect, affecting the staff's reading and viewing. Moreover, the position of the monitoring instrument display screen cannot be adjusted according to the angle required by the user. Moreover, when the staff is using it, the display screen will shake as the staff's head swings up and down, affecting the staff's normal work and causing the monitoring data to be inaccurately read. Therefore, there is a need for a monitoring instrument with head-mounted display devices and a method for using same. Summary of the Invention

[0004] The main purpose of the present invention is to provide a monitoring instrument for a head-mounted display device and a method for using the same, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A monitoring instrument for a head-mounted display device comprises a helmet, wherein a locking assembly is fixedly mounted on both left and right ends of the helmet, a sliding assembly is fixedly mounted inside one of the locking assemblies located at the left end of the helmet, a mounting assembly is fixedly mounted on the end of the sliding assembly away from the locking assembly, a fixing mechanism is rotatably mounted inside the mounting assembly, a fixing block is fixedly mounted on the middle portion of each of the left and right ends of the helmet, a drawstring is fixedly mounted on the lower ends of the two fixing blocks, and a light shielding assembly is fixedly mounted on the upper end of the helmet;

[0007] The locking assembly includes a mounting block and a cover plate, the upper end of the mounting block is provided with a T-shaped slide groove, a support rod is fixedly mounted on the upper rear end of the mounting block, a spring is sleeved on the outer surface of the support rod, and two rotating blocks are symmetrically fixedly mounted on the rear end of the lower end of the cover plate, and the cover plate is rotatably connected to the support rod through the rotating blocks;

[0008] The sliding assembly includes a slider, and two connecting blocks are symmetrically fixedly installed on the left end of the slider. The upper ends of the two connecting blocks are each provided with a circular hole extending vertically therethrough, and a first resistance rod is fixedly installed inside the two circular holes. A bracket is rotatably installed on the outer surface of the first resistance rod, and a groove is provided on the left end of the bracket, and a second resistance rod is fixedly installed inside the groove.

[0009] The mounting assembly includes a frame, a support block is fixedly mounted on the lower right end of the frame, mounting rings are fixedly mounted on the left and right side walls of the inner cavity of the frame, and a rotating shaft is fixedly mounted inside the mounting ring.

[0010] Preferably, the fixing mechanism includes a mounting frame, a counterweight is fixedly installed at the lower end of the mounting frame, sliding grooves are provided on the left and right side walls of the inner cavity of the mounting frame, a rectangular hole that passes through the inner cavity of the mounting frame is provided at the rear part of the upper end of the mounting frame, a baffle that passes through the rectangular hole is slidably installed inside the sliding groove, rotating rods are fixedly installed in the middle of the left and right ends of the mounting frame, and a transparent plate is fixedly installed at the front end of the mounting frame.

[0011] Preferably, the rotating rod passes through the mounting ring and is fixedly connected to the rotating shaft, and the mounting frame is rotatably connected to the mounting ring through the rotating rod and the rotating shaft.

[0012] Preferably, one end of the spring is fixedly connected to the mounting block, the other end of the spring is fixedly connected to the cover plate, and the mounting block is fixedly connected to the helmet.

[0013] Preferably, the sliding block is T-shaped and is slidably installed in the sliding groove, and the supporting block is located inside the groove and is rotatably connected to the second resistance rod.

[0014] Preferably, the shading assembly includes a U-shaped mounting block, and the number of the U-shaped mounting blocks is two. The front ends of the two U-shaped mounting blocks are fixedly installed with limit blocks, and the interiors of the two limit blocks are rotatably installed with clamping blocks through rotating rods, and the rear ends of the two clamping blocks are fixedly installed with support rods, and a shading plate is fixedly installed between the two support rods.

[0015] Preferably, the limiting block and the U-shaped mounting block are fixedly mounted on the upper end of the helmet.

[0016] A method for using a monitoring instrument for a head-mounted display device, comprising the following steps:

[0017] A. Place the helmet on the inspector's head and secure it with a drawstring to prevent it from falling. Rotate the bracket on the first resistance rod between the connecting blocks to adjust the bracket's rotation angle. Rotating the bracket will also drive the mounting assembly and fixing mechanism to rotate.

[0018] B. After rotating the bracket to a suitable angle, rotate the frame to adjust the frame to a suitable angle. The frame rotation drives the support block to rotate on the second resistance rod. When the user adjusts the frame to a suitable angle, the user pulls the baffle, which moves in the slide groove. Place the display screen of the clinical tester into the installation frame, and then insert the baffle back into the slide groove to prevent the display screen of the clinical tester from falling.

[0019] C. Then rotate the support rod, which drives the sun visor to rotate, and the support rod drives the clamping block to rotate in the U-shaped mounting block. The limit block prevents the support rod from rotating too much to ensure that the support rod and the helmet form a 90-degree angle;

[0020] D. When the user slightly shakes his head up and down, the rotating rods at both ends of the mounting frame will drive the rotating shaft to rotate in the mounting ring. The counterweight block fixed at the bottom of the mounting frame increases the weight of the lower part of the mounting frame to ensure the rotation of the mounting frame, so that the display screen of the clinical tester in the mounting frame always remains perpendicular to the ground;

[0021] E. The user can press the cover plate downward to drive the rotating block to rotate on the support rod. The cover plate squeezes the spring to rotate, and then slides the slider inside the slide slot to take the slider out. The user can then choose the left or right mounting block for installation and use.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] Through the provided locking assembly, sliding assembly, mounting assembly and shading assembly, the angle of use can be adjusted to the angle at which the staff needs to view the monitoring screen, and the installation positions of the sliding assembly and the mounting assembly can be selected according to the staff's usage habits. The shading assembly can block sunlight to prevent the screen of the monitoring instrument from reflecting light, making it inconvenient for the staff to watch, and the operation method is relatively simple and convenient for users.

[0024] Through the installation components and fixing mechanisms, the staff's head will swing up and down when using the monitoring instrument. The swing will drive the rotating rod on the installation frame to rotate within the shaft, ensuring that the display screen in the installation frame maintains a vertical angle with the ground. At the same time, it is also convenient for users to view and use it, and the operation method is also relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of a monitoring instrument for a head-mounted display device according to the present invention;

[0026] Figure 2 This is a structural schematic diagram of a monitoring instrument locking assembly of a head-mounted display device according to the present invention;

[0027] Figure 3This is a schematic diagram of the overall structure of a monitoring instrument sliding assembly of a head-mounted display device according to the present invention;

[0028] Figure 4 This is a schematic diagram of the connection between a sliding assembly and a mounting assembly of a monitoring instrument of a head-mounted display device according to the present invention;

[0029] Figure 5 This is a structural diagram of a monitoring instrument installation assembly for a head-mounted display device according to the present invention;

[0030] Figure 6 This is a structural schematic diagram of a monitoring instrument fixing mechanism of a head-mounted display device according to the present invention;

[0031] Figure 7 The present invention is a structural schematic diagram of a monitoring instrument shading component of a head-mounted display device.

[0032] In the figure: 1. Helmet; 2. Locking assembly; 21. Mounting block; 22. Slide groove; 23. Support rod; 24. Spring; 25. Cover plate; 26. Rotating block; 3. Fixed block; 4. Pull belt; 5. Sliding assembly; 51. Slider; 52. Connecting block; 53. First resistance rod; 54. Bracket; 55. Groove; 56. Second resistance rod; 6. Mounting assembly; 61. Support block; 62. Frame; 63. Mounting ring; 64. Rotating shaft; 7. Fixing mechanism; 71. Rotating rod; 72. Mounting frame; 73. Counterweight block; 74. Transparent plate; 75. Slide groove; 76. Rectangular hole; 77. Baffle; 8. Shading assembly; 81. Limit block; 82. U-shaped mounting block; 83. Block; 84. Support rod; 85. Shading plate. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0034] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0036] like Figure 1-7 As shown, a monitoring instrument for a head-mounted display device includes a helmet 1, with locking assemblies 2 fixedly installed at both ends of the helmet 1, a sliding assembly 5 fixedly installed inside the locking assembly 2 at the left end of the helmet 1, a mounting assembly 6 fixedly installed at the end of the sliding assembly 5 away from the locking assembly 2, a fixing mechanism 7 rotatably installed inside the mounting assembly 6, a fixing block 3 fixedly installed at the middle of the left and right ends of the helmet 1, a drawstring 4 fixedly installed at the lower ends of the two fixing blocks 3, and a light shielding assembly 8 fixedly installed at the upper end of the helmet 1;

[0037] The drawstring 4 is an elastic rubber belt with strong elasticity, and the interior of the helmet 1 can be adjusted according to the size of the user's head.

[0038] The latch assembly 2 includes a mounting block 21 and a cover plate 25. A T-shaped slot 22 is formed at the upper end of the mounting block 21. A support rod 23 is fixedly mounted on the upper rear end of the mounting block 21. A spring 24 is sleeved on the outer surface of the support rod 23. Two rotating blocks 26 are symmetrically fixedly mounted on the rear end of the cover plate 25. The cover plate 25 is rotatably connected to the support rod 23 via the rotating blocks 26.

[0039] like Figure 2 As shown, the mounting block 21 is installed at a position not much different from the user's eye level, mainly for the convenience of viewing the display screen, and the provided slide groove 22 is more convenient for the user to install and use.

[0040] One end of the spring 24 is fixedly connected to the mounting block 21 , the other end of the spring 24 is fixedly connected to the cover plate 25 , and the mounting block 21 is fixedly connected to the helmet 1 .

[0041] Among them, the spring 24 can support the cover plate 25 to keep rotating on the upper end of the mounting block 21, and the spring 24 is a torsion spring, which stores force by twisting or rotating a soft and tough elastic material.

[0042] The sliding assembly 5 includes a slider 51. Two connecting blocks 52 are symmetrically fixedly mounted on the left end of the slider 51. Round holes are formed in the upper ends of the two connecting blocks 52, and a first resistance rod 53 is fixedly mounted inside the two round holes. A bracket 54 is rotatably mounted on the outer surface of the first resistance rod 53. A groove 55 is formed at the left end of the bracket 54. A second resistance rod 56 is fixedly mounted inside the groove 55.

[0043] like Figure 3-5 As shown, the first resistance rod 53 is used to adjust the tightness of the bolt to ensure that the angle of the bracket 54 remains unchanged after rotation, and it is also more convenient for staff to use.

[0044] The mounting assembly 6 includes a frame 62 , a support block 61 is fixedly mounted on the lower right end of the frame 62 , mounting rings 63 are fixedly mounted on both the left and right side walls of the inner cavity of the frame 62 , and a rotating shaft 64 is fixedly mounted inside the mounting ring 63 .

[0045] Among them, the mounting ring 63 is installed at the lower part of the left and right side walls of the inner cavity of the frame 62, and the height of the frame 62 is half of the fixing mechanism 7; the slider 51 is T-shaped and is slidably installed in the slide groove 22, and the support block 61 is located inside the groove 55 and is rotatably connected to the second resistance rod 56.

[0046] It is worth noting that the working principle of the second resistance rod 56 is the same as that of the first resistance rod 53, and it is mainly for the convenience of operation by staff.

[0047] The fixing mechanism 7 includes a mounting frame 72, a counterweight 73 is fixedly installed at the lower end of the mounting frame 72, a sliding groove 75 is provided on the left and right side walls of the inner cavity of the mounting frame 72, a rectangular hole 76 that passes through the inner cavity of the mounting frame 72 is provided at the rear part of the upper end of the mounting frame 72, a baffle 77 that passes through the rectangular hole 76 is slidably installed inside the sliding groove 75, a rotating rod 71 is fixedly installed in the middle of the left and right ends of the mounting frame 72, and a transparent plate 74 is fixedly installed at the front end of the mounting frame 72.

[0048] like Figure 6 As shown, the transparent plate 74 is made of a transparent plastic plate and is mainly used to prevent the monitored display from falling, and the counterweight block 73 ensures that the bottom of the mounting frame 72 is relatively heavy, enabling the mounting frame 72 to rotate within the mounting ring 63.

[0049] The rotating rod 71 passes through the mounting ring 63 and is fixedly connected to the rotating shaft 64 . The mounting frame 72 is rotatably connected to the mounting ring 63 via the rotating rod 71 and the rotating shaft 64 .

[0050] The rotating rod 71 is fixedly connected to the inner wall of the rotating shaft 64 , and the outer surface of the rotating shaft 64 is fixedly connected to the inner wall of the mounting ring 63 .

[0051] The shading assembly 8 includes a U-shaped mounting block 82, and there are two U-shaped mounting blocks 82. The front ends of the two U-shaped mounting blocks 82 are fixedly installed with a limit block 81. The interiors of the two limit blocks 81 are rotatably installed with a clamping block 83 through a rotating rod. The rear ends of the two clamping blocks 83 are fixedly installed with a support rod 84, and a shading plate 85 is fixedly installed between the two support rods 84.

[0052] like Figure 7 As shown, the sunshade 85 is supported by a plastic plate with poor light transmittance, which mainly plays the role of blocking sunlight and is also convenient for users to use.

[0053] The limiting block 81 and the U-shaped mounting block 82 are fixedly mounted on the upper end of the helmet 1 .

[0054] The limiting block 81 is used to prevent the user from excessively rotating the support rod 84 , thereby serving as a support and limiting function.

[0055] A method for using a monitoring instrument for a head-mounted display device, comprising the following steps:

[0056] A. Put the helmet 1 on the head of the inspector and then use the drawstring 4 to fix it to prevent it from falling. The rotating bracket 54 rotates on the first resistance rod 53 between the connecting blocks 52 to adjust the rotation angle of the bracket 54. The rotation of the bracket 54 also drives the mounting assembly 6 and the fixing mechanism 7 to rotate. The user can also adjust the tightness of the drawstring 4 to fix it. The helmet 1 can also be adjusted according to the size of the user's head, which is more convenient for the user to use. The operation is also relatively simple and easy for the staff to wear.

[0057] B. After rotating the bracket 54 to a suitable angle, the frame 62 is then rotated to adjust the frame 62 to a suitable angle. The rotation of the frame 62 drives the support block 61 to rotate on the second resistance rod 56. When the user adjusts the frame 62 to a suitable angle, the user pulls the baffle 77, which moves in the slide groove 75, and places the display screen of the clinical tester into the installation frame 72. The baffle 77 is then inserted back into the slide groove 75 to prevent the display screen of the clinical tester from falling. A handle is provided on the upper end of the baffle 77 for the convenience of the staff in pulling and removing it, and the frame 62 is mainly used to support the installation frame 72 to prevent it from falling.

[0058] C. Then rotate the support rod 84, which drives the visor 85 to rotate. The support rod 84 drives the clamping block 83 to rotate in the U-shaped mounting block 82. The limit block 81 prevents the support rod 84 from rotating too much, ensuring that the support rod 84 and the helmet 1 form a ninety-degree angle. The visor 85 can block most of the sunlight from shining on the screen to be displayed, making it convenient for the staff to observe the readings on the monitoring display;

[0059] D. When the user slightly shakes his head up and down, the rotating rods 71 ​​at both ends of the mounting frame 72 drive the rotating shaft 64 to rotate within the mounting ring 63. The counterweight 73 fixed to the bottom of the mounting frame 72 increases the weight of the lower part of the mounting frame 72 to ensure the rotation of the mounting frame 72, so that the display screen of the clinical test instrument in the mounting frame 72 always remains perpendicular to the ground. The purpose of ensuring that the display screen of the clinical test instrument always remains perpendicular to the ground is to facilitate the staff to view the display screen and prevent shaking that may cause eye fatigue when the staff views the display screen.

[0060] E. The user can press the cover plate 25 downward to drive the rotating block 26 to rotate on the support rod 23. The cover plate 25 squeezes the spring 24 to rotate, and then slides the slider 51 inside the slide groove 22 to take out the slider 51. Then the user can choose the left or right mounting block 21 for installation and use. The angle of the screen installation can be selected according to the user's needs, which is also convenient for installation and adjustment, making it more convenient for staff to operate and use.

[0061] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A monitoring instrument for a head-mounted display device, comprising a helmet (1), characterized in that: The left and right ends of the helmet (1) are both fixedly mounted with a locking assembly (2); a sliding assembly (5) is fixedly mounted inside the locking assembly (2) located at the left end of the helmet (1); a mounting assembly (6) is fixedly mounted on the end of the sliding assembly (5) away from the locking assembly (2); a fixing mechanism (7) is rotatably mounted inside the mounting assembly (6); a fixing block (3) is fixedly mounted at the middle of the left and right ends of the helmet (1); a drawstring (4) is fixedly mounted at the lower ends of the two fixing blocks (3); and a light shielding assembly (8) is fixedly mounted on the upper end of the helmet (1); The locking assembly (2) comprises a mounting block (21) and a cover plate (25); a T-shaped slide groove (22) is provided at the upper end of the mounting block (21); a support rod (23) is fixedly mounted on the upper rear end of the mounting block (21); a spring (24) is sleeved on the outer surface of the support rod (23); two rotating blocks (26) are symmetrically fixedly mounted on the rear end of the cover plate (25); and the cover plate (25) is rotatably connected to the support rod (23) via the rotating blocks (26); The sliding assembly (5) comprises a sliding block (51), the left end of the sliding block (51) is symmetrically fixedly mounted with two connecting blocks (52), the upper ends of the two connecting blocks (52) are each provided with a circular hole extending therethrough, and a first resistance rod (53) is fixedly mounted inside the two circular holes, a bracket (54) is rotatably mounted on the outer surface of the first resistance rod (53), a groove (55) is formed at the left end of the bracket (54), and a second resistance rod (56) is fixedly mounted inside the groove (55); The mounting assembly (6) comprises a frame (62), a support block (61) is fixedly mounted on the lower right end of the frame (62), mounting rings (63) are fixedly mounted on the left and right side walls of the inner cavity of the frame (62), a rotating shaft (64) is fixedly mounted inside the mounting ring (63), the fixing mechanism (7) comprises a mounting frame (72), a counterweight block (73) is fixedly mounted on the lower end of the mounting frame (72), a sliding groove (75) is provided on the left and right side walls of the inner cavity of the mounting frame (72), a rectangular hole (76) which penetrates the inner cavity of the mounting frame (72) is provided at the rear upper end of the mounting frame (72), a rotating shaft (64) is slidably mounted inside the sliding groove (75), and a rotating shaft (64) is fixedly mounted inside the rotating shaft (64). A baffle (77) passes through the rectangular hole (76); rotating rods (71) are fixedly mounted at the middle of both left and right ends of the mounting frame (72); a transparent plate (74) is fixedly mounted at the front end of the mounting frame (72); the shading component (8) comprises a U-shaped mounting block (82); the number of the U-shaped mounting blocks (82) is two; a limiting block (81) is fixedly mounted at the front end of the two U-shaped mounting blocks (82); a clamping block (83) is rotatably mounted inside the two limiting blocks (81) via a rotating rod; a supporting rod (84) is fixedly mounted at the rear end of the two clamping blocks (83); and a shading plate (85) is fixedly mounted between the two supporting rods (84).

2. The monitoring instrument for a head mounted display device according to claim 1, characterized in that: The rotating rod (71) passes through the mounting ring (63) and is fixedly connected to the rotating shaft (64); the mounting frame (72) is rotatably connected to the mounting ring (63) via the rotating rod (71) and the rotating shaft (64).

3. The monitoring instrument for a head mounted display device according to claim 1, characterized in that: One end of the spring (24) is fixedly connected to the mounting block (21), the other end of the spring (24) is fixedly connected to the cover plate (25), and the mounting block (21) is fixedly connected to the helmet (1).

4. The monitoring instrument for a head mounted display device according to claim 1, characterized in that: The sliding block (51) is T-shaped and is slidably mounted in the sliding groove (22); the supporting block (61) is located inside the groove (55) and is rotatably connected to the second resistance rod (56).

5. The monitoring instrument for a head mounted display device according to claim 1, characterized in that: The limiting block (81) and the U-shaped mounting block (82) are fixedly mounted on the upper end of the helmet (1).

6. A method for using a monitoring device for a head mounted display device according to any one of claims 1 to 5, characterized in that: Here are the steps: A. Put the helmet (1) on the head of the inspector, and then use the drawstring (4) to fix it to prevent the helmet (1) from falling off. The rotating bracket (54) rotates on the first resistance rod (53) between the connecting blocks (52), thereby adjusting the rotation angle of the bracket (54). The rotation of the bracket (54) will also drive the installation component (6) and the fixing mechanism (7) to rotate; B. After the bracket (54) is rotated to a suitable angle, the frame (62) is rotated to adjust the frame (62) to a suitable angle. The frame (62) rotates to drive the support block (61) to rotate on the second resistance rod (56). After the user adjusts the frame (62) to a suitable angle, the user pulls the baffle (77), and the baffle (77) moves in the slide groove (75), and the display screen of the clinical tester is placed in the installation frame (72). Then, the baffle (77) is inserted back into the slide groove (75) to prevent the display screen of the clinical tester from falling; C. Then, the support rod (84) is rotated, the support rod (84) drives the sunshade (85) to rotate, the support rod (84) drives the clamping block (83) to rotate in the U-shaped mounting block (82), and the limit block (81) prevents the support rod (84) from rotating too much to ensure that the support rod (84) and the helmet (1) form an angle of ninety degrees; D. When the user slightly shakes his head up and down, the rotating rods (71) at both ends of the mounting frame (72) drive the rotating shaft (64) to rotate in the mounting ring (63), and the counterweight (73) is fixed to the bottom of the mounting frame (72) to increase the weight of the lower part of the mounting frame (72) to ensure the rotation of the mounting frame (72), so that the display screen of the clinical test instrument in the mounting frame (72) always maintains an angle perpendicular to the ground; E. The user can press the cover plate (25) downward to drive the rotating block (26) to rotate on the support rod (23), the cover plate (25) squeezes the spring (24) to rotate, and then slides the slider (51) inside the slide groove (22) to remove the slider (51), and then the user can select the left or right installation block (21) to install and use it at will.

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