Display equipment supporting device and ultrasonic equipment

Abstract

The utility model relates to the technical field of display supporting, and discloses a display equipment supporting device and ultrasonic equipment. The display equipment supporting device comprises a connecting arm, a connecting rod, a friction sleeve and an elastic piece, one end of the connecting arm is rotatably arranged on the base, the other end of the connecting arm is rotatably arranged on the base, a sliding groove is formed in the connecting arm, one end of the connecting rod is rotatably arranged on the base, and the other end of the connecting rod is rotatably arranged on the base. The connecting rod, the connecting arm, the base and the base form a parallelogram connecting rod mechanism, the friction sleeve is arranged on the connecting rod in a sleeving mode and suitable for moving in the axial direction of the connecting rod, the friction sleeve is provided with a limiting pin, the limiting pin is arranged in the sliding groove in a sliding mode, one end of the elastic piece is arranged on the connecting rod, and the other end of the elastic piece is connected with the friction sleeve. According to the display equipment supporting device, an assembling object on the display equipment supporting device can be stably supported at any position, the structure is simple, the size is small, and the installation space can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of display support, in particular to a display equipment support device and an ultrasonic device. Background Art

[0002] A support arm is a device used to support and adjust the position of a monitor. The support arm is usually composed of one or more joints, and the monitor can be flexibly adjusted by adjusting the length, angle and height of the arm.

[0003] In the prior art, a monitor is mounted on a support arm, and a user can raise, bring the monitor closer, or push the monitor further away. The angle of the monitor can be adjusted to suit the user's personal needs and comfort, thereby improving work efficiency. Normally, the back panel of the monitor is fixed at one end of the support plate, and the support arm extends a certain length toward the outside away from the back panel of the monitor. In addition, the existing support arm is relatively large in size, resulting in a large installation space occupied by the support arm. Utility Model Content

[0004] In view of this, the utility model provides a display device support device to solve the problem that the existing support arm occupies a large installation space.

[0005] In a first aspect, the utility model provides a display device support device, comprising:

[0006] A connecting arm, one end of which is rotatably mounted on the base, and the other end of which is rotatably mounted on the pedestal, wherein a slide groove is provided on the connecting arm;

[0007] a connecting rod, one end of which is rotatably disposed on the base, and the other end of which is rotatably disposed on the pedestal, and the connecting rod, the connecting arm, the base and the pedestal form a parallelogram connecting rod mechanism;

[0008] A friction sleeve, which is sleeved on the connecting rod and is suitable for moving along the axial direction of the connecting rod. A limit pin is provided on the friction sleeve, and the limit pin is slidably arranged in the sliding groove;

[0009] An elastic member has one end disposed on the connecting rod and the other end connected to the friction sleeve, and the elastic member applies an elastic force on the friction sleeve toward the base.

[0010] Beneficial effect: This display device support device sets the connecting rod, connecting arm, base and pedestal as a parallelogram connecting rod mechanism, and an assembly (such as an ultrasonic display) can be set on the pedestal. The connecting rod 4 can rotate around the two rotation points of the pedestal 2, and the connecting arm 1 can rotate around the other two rotation points of the pedestal 2. During the rotation of the connecting rod and the connecting arm on the pedestal, the friction sleeve moves along the axial direction of the connecting rod, and the limit pin moves in the slide groove. The support force generated by the limit pin on the connecting rod is used to balance the vertical downward gravity generated by the assembly. The static friction force generated between the friction sleeve and the connecting rod and the elastic force applied to the friction sleeve by the elastic member are used to balance the display device support device, so that the force on the connecting rod is balanced, and the display device support device and the assembly on the display device support device can be stably supported at any position. Compared with the existing support arm, the display device support device in the present application has a simple structure and a small size, and can effectively reduce the installation space occupied by the display device support device.

[0011] In an optional embodiment, a mounting cavity is reserved in the connecting arm, and the connecting rod and the elastic member are both arranged in the mounting cavity.

[0012] Beneficial effects: By centrally installing the connecting rod and the elastic member in the installation cavity, a more compact design can be achieved, further reducing the volume of the display device support device. At the same time, placing the connecting rod and the elastic member in the installation cavity can provide additional protection for the connecting rod and the elastic member, thereby extending the service life of the connecting rod and the elastic member.

[0013] In an optional embodiment, the sliding grooves are respectively provided on both sides of the connecting arm, and the limiting pins are respectively provided in the sliding grooves on both sides of the friction sleeve corresponding to the sliding grooves.

[0014] Beneficial effect: By respectively setting the limit pins on both sides of the friction sleeve in the slide groove of the connecting arm, the limit pins on both sides of the friction sleeve respectively provide supporting force to the friction sleeve, and then the supporting force is applied to the connecting rod to balance the vertical downward gravity generated by the assembly, thereby ensuring the stability of the display device support device.

[0015] In an optional embodiment, the elastic member is sleeved on the connecting rod, a flange is adjustably provided on the connecting rod and is suitable for adjusting the position along the axial direction of the connecting rod, and one end of the elastic member is fixed on the flange.

[0016] Beneficial effect: By setting the elastic member sleeve on the connecting rod and fixing one end of the elastic member on the flange, the elastic force applied by the elastic member to the friction sleeve is the same as the axial direction of the connecting rod, thereby ensuring that the elastic member can apply a stable elastic force to the friction sleeve. At the same time, the flange is adjustably arranged on the connecting rod. By adjusting the position of the flange on the connecting rod, the tightness of the elastic member can be adjusted, and then the elastic force of the elastic member can be adjusted to adapt to assemblies of different weights arranged on the base.

[0017] In an optional implementation, the flange is threadedly connected to the connecting rod.

[0018] Beneficial effects: Since the flange is threadedly connected to the connecting rod, the position of the flange on the connecting rod can be adjusted by rotating the flange, thereby adjusting the elastic force of the elastic member. The structure is simple and easy to operate.

[0019] In an optional embodiment, it further comprises a sliding block, wherein the sliding block is fixedly sleeved on the friction sleeve, and the limiting pin is fixedly mounted on the sliding block.

[0020] Beneficial effects: Usually, the friction sleeve is made of soft material. By setting the slider on the friction sleeve and setting the limit pin on the slider, it is ensured that the limit pin provides a stable supporting force for the friction sleeve, thereby ensuring the stability of the display device support device.

[0021] In an optional embodiment, an adjusting member is provided on the sliding block, one end of the adjusting member is in contact with the friction sleeve, and the contact force between the friction sleeve and the connecting rod surface is adjusted by the adjusting member.

[0022] Beneficial effect: The friction coefficient between the friction sleeve and the connecting rod is adjusted by adjusting the contact force between the friction sleeve and the connecting rod surface through the adjusting piece. The greater the contact force between the friction sleeve and the connecting rod, the greater the friction coefficient of the friction sleeve on the connecting rod.

[0023] In an optional embodiment, it further includes a rotating shaft, and the base is rotatably disposed on the rotating shaft.

[0024] Beneficial effect: By arranging a rotating shaft on the base, the base can rotate around the rotating shaft, thereby driving the connecting arm to rotate together, thereby increasing the adjustment angle of the display device support device.

[0025] In an optional embodiment, a hinge point is provided on the base.

[0026] Beneficial effect: By setting a hinge point on the base, the assembly connected to the base can be rotated and adjusted, thereby increasing the adjustment angle of the assembly on the display device support device.

[0027] In a second aspect, the utility model also provides an ultrasonic device, comprising:

[0028] Display device support device;

[0029] The rotating arm has one end rotatably connected to the base and the other end is provided with an ultrasonic display.

[0030] Beneficial effect: This ultrasonic device is arranged by rotating the rotating arm on the base, and the ultrasonic display is arranged on the rotating arm. The vertical downward gravity generated by the ultrasonic display is balanced by the supporting force generated by the limit pin on the display device support device on the connecting rod. The static friction force generated between the friction sleeve and the connecting rod and the elastic force applied by the elastic member to the friction sleeve are used to balance the display device support device, so that the force on the connecting rod is balanced, and the ultrasonic display can be stably supported at any position. The structure is simple and the volume is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 This is a schematic structural diagram of a display device support device according to an embodiment of the utility model;

[0033] Figure 2 for Figure 1 A cross-sectional view of the display device support device shown;

[0034] Figure 3 A simplified diagram of the force analysis of the display equipment support device;

[0035] Figure 4 It is a schematic diagram of the structure of the ultrasound display installed on the display device support device;

[0036] Figure 5 for Figure 4 Schematic diagram of the explosion.

[0037] Description of reference numerals:

[0038] 1. Connecting arm; 101. Slide groove; 2. Base; 3. Base; 301. Hinge point; 4. Connecting rod; 5. Friction sleeve; 6. Limit pin; 7. Elastic member; 8. Flange; 9. Slider; 10. Rotating shaft; 11. Rotating arm; 12. Ultrasonic display; 13. Mounting base. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0040] In the related art, a monitor is mounted on a support arm, and the user can lift, bring the monitor closer, or push it away, and adjust the angle of the monitor to adapt to the user's personal needs and comfort, thereby improving work efficiency. Normally, the back panel of the monitor is fixed at one end of the support plate, and the support arm extends a certain length to the outside in a direction away from the back panel of the monitor. In addition, the volume of the existing support arm is relatively large, resulting in a large installation space occupied by the support arm.

[0041] In order to solve the above technical problems, the following Figures 1 to 5 , describing an embodiment of the utility model.

[0042] According to an embodiment of the present utility model, on the one hand, as Figure 1 and Figure 2 As shown, a display device supporting device is provided, including a connecting arm 1, a connecting rod 4, a friction sleeve 5 and an elastic member 7.

[0043] Specifically, Figure 1 and Figure 2 As shown, one end of the connecting arm 1 is rotatably disposed on the base 2 , and the other end is rotatably disposed on the base 3 . A sliding groove 101 is provided on the connecting arm 1 .

[0044] Specifically, combined Figure 1 and Figure 2 As shown, one end of the connecting rod 4 is rotatably disposed on the base 2, and the other end is rotatably disposed on the base 3, and the connecting rod 4, the connecting arm 1, the base 2 and the base 3 form a parallelogram connecting rod 4 mechanism.

[0045] Specifically, Figure 2 As shown, the friction sleeve 5 is sleeved on the connecting rod 4, and the friction sleeve 5 is suitable for moving along the axial direction of the connecting rod 4. The friction sleeve 5 is provided with a limit pin 6, and the limit pin 6 is slidably arranged in the slide groove 101. It can be understood that when the friction sleeve 5 moves on the connecting rod 4, the limit pin 6 on the friction sleeve 5 moves in the slide groove 101.

[0046] Specifically, Figure 1 and Figure 2 As shown, one end of the elastic member 7 is arranged on the connecting rod 4 , and the other end of the elastic member 7 is connected to the friction sleeve 5 . The elastic member 7 applies an elastic force to the friction sleeve 5 in the direction of the base 2 .

[0047] In this display device support device, the connecting rod 4, the connecting arm 1, the base 2 and the base 3 are arranged as a parallelogram connecting rod 4 mechanism, and an assembly (such as an ultrasonic display 12) can be arranged on the base 3. The connecting rod 4 can rotate around the two rotation points of the base 2, and the connecting arm 1 can rotate around the other two rotation points of the base 2. During the rotation of the connecting rod 4 and the connecting arm 1 on the base 2, the friction sleeve 5 moves along the axial direction of the connecting rod 4, and the limit pin 6 moves in the slide groove 101. The support force generated by the limit pin 6 on the connecting rod 4 is used to balance the vertical downward gravity generated by the assembly. The static friction force generated between the friction sleeve 5 and the connecting rod 4 and the elastic force applied by the elastic member 7 to the friction sleeve 5 are used to balance the display device support device, so that the force on the connecting rod 4 is balanced, and the assembly on the display device support device can be stably supported at any position. Compared with the existing support arm, the display device support device in the present application has a simple structure and a small size, and can effectively reduce the installation space occupied by the display device support device.

[0048] In order to better understand the stress of the display device support device, the following Figure 3 A brief analysis is made on the stress state of the display device support device (in the brief analysis, for the convenience of analysis and explanation, the gravity of the display device support device itself is not considered temporarily, and it should be noted that when the gravity of the display device support device itself is considered, the analysis process is similar to it), and the specific description is as follows:

[0049] The connecting rod 4 in the parallelogram connecting rod 4 mechanism can rotate around two rotation points of the base 2, the connecting arm 1 can rotate around the other two rotation points of the base 2, the friction sleeve 5 can slide on the connecting rod 4, the limit pin 6 on the friction sleeve 5 is set in the slide groove 101 of the connecting arm 1, and the limit pin 6 generates a supporting force F1 on the connecting rod 4 (the limit pin 6 generates a force on the friction sleeve 5, and the friction sleeve 5 transmits the force to the connecting rod 4). F1 can be divided into two directional components F1' and F1", F1' is a component force perpendicular to the connecting rod 4 upward, and F1" is a component force along the axial direction of the connecting rod 4 toward the base 3. F2 is the vertical downward gravity generated by the assembly set on the base 3.

[0050] When the display device support device is in a balanced state, the friction sleeve 5 is stationary on the connecting rod 4. Under the action of F1", a static friction force f is generated between the friction sleeve 5 and the connecting rod 4. The static friction force f is always equal to F1" and in opposite direction. Since the friction between materials is limited, when the weight of the assembly, that is, the torque of F2, reaches a certain size, the static friction force f is insufficient to balance F1". An elastic member 7 is provided on the connecting rod 4, and an elastic force F3 (not shown in the figure) is applied to the friction sleeve 5 through the elastic member 7. The display device support device is balanced by the elastic force F3 and the static friction force f. It can be seen from the force analysis that f=F1"-F3. At the position of the friction sleeve 5, the force on the connecting rod 4 is balanced, the connecting rod 4 stays at the rotation point of the base 2, and the sum of all the torques on the connecting rod 4 is 0.

[0051] It should be noted that the limit pin 6 can be imagined as a connecting rod, one end of which is rotatably set on the friction sleeve 5, and the other end of which is rotatably set on the base 2, and the direction of F1 is upward along the extension line of the connecting rod. The connecting rod is omitted here, and a circle is drawn with the connecting end of the connecting rod and the base 2 as the center and the length of the connecting rod as the radius. The arc formed limits the movement trajectory of the limit pin 6, that is, the arc path formed is the slide groove 101. At the same time, omitting the connecting rod can effectively reduce the volume of the display device support device.

[0052] Specifically, the connecting arm 1 is set to a regular shape such as a cuboid or a cylinder, and can also be set to other irregular shapes. In the embodiment of the present application, the shape of the connecting arm 1 is not specifically limited.

[0053] Specifically, the base 2 can be fixedly arranged on the work surface, or can be rotatably arranged on the work surface. In the embodiment of the present application, the installation method of the base 2 is not specifically limited.

[0054] Specifically, the base 3 may be connected to an assembly or other rotating arm 11 , etc. In the embodiment of the present application, the installation method of the base 3 is not specifically limited.

[0055] Specifically, the friction coefficient between the friction sleeve 5 and the connecting rod 4 should be adaptively set according to the weight of the assembly installed on the connecting arm 1. In the embodiment of the present application, the friction coefficient between the friction sleeve 5 and the connecting rod is not specifically limited.

[0056] Specifically, the elastic member 7 can be a spring, a tension spring, a rubber elastic body, etc. In the embodiment of the present application, the type of the elastic member 7 is not specifically limited.

[0057] In one embodiment, Figure 1As shown, a mounting cavity is reserved in the connecting arm 1, and the connecting rod 4 and the elastic member 7 are both arranged in the mounting cavity. By centrally installing the connecting rod 4 and the elastic member 7 in the mounting cavity, a more compact design can be achieved, and the volume of the display device support device can be further reduced. At the same time, placing the connecting rod 4 and the elastic member 7 in the mounting cavity can provide additional protection for the connecting rod 4 and the elastic member 7, thereby extending the service life of the connecting rod 4 and the elastic member 7.

[0058] In one embodiment, Figure 1 As shown, slide grooves 101 are respectively provided on both sides of the connecting arm 1, and limit pins 6 are respectively provided on both sides of the friction sleeve 5 corresponding to the slide grooves 101. By setting the limit pins 6 on both sides of the friction sleeve 5 in the slide grooves 101 of the connecting arm 1, the limit pins 6 on both sides of the friction sleeve 5 respectively provide supporting force to the friction sleeve 5, and then the supporting force is applied to the connecting rod 4 to balance the vertical downward gravity generated by the assembly, thereby ensuring the stability of the display device support device.

[0059] Exemplarily, the slide grooves 101 on both sides of the connecting arm 1 are symmetrically arranged, and the limit pins 6 on both sides of the friction sleeve 5 are also symmetrically arranged.

[0060] In one embodiment, Figure 1 and Figure 2 As shown, the elastic member 7 is sleeved on the connecting rod 4, and the connecting rod 4 is adjustably provided with a flange 8, and the flange 8 is suitable for adjusting the position along the axial direction of the connecting rod 4, and one end of the elastic member 7 is fixedly provided on the flange 8. By sleeved on the connecting rod 4 and fixing one end of the elastic member 7 on the flange 8, the one end of the elastic member 7 is fixed on the connecting rod 4, so that the elastic force applied by the elastic member 7 to the friction sleeve 5 is the same as the axial direction of the connecting rod 4, thereby ensuring that the elastic member 7 can apply a stable elastic force to the friction sleeve 5, and at the same time, the flange 8 is adjustably provided on the connecting rod 4, and by adjusting the position of the flange 8 on the connecting rod 4, the tightness of the elastic member 7 can be adjusted, and then the elastic force of the elastic member 7 can be adjusted to adapt to the assembly of different weights arranged on the base 3.

[0061] Specifically, the flange 8 can be adjustably set on the connecting rod 4 by means of a snap connection, and the flange 8 can also be adjustably set on the connecting rod 4 by means of fastener fixation. In the embodiment of the present application, the connection method between the flange 8 and the connecting rod 4 is not specifically limited.

[0062] In one embodiment, the flange 8 is threadedly connected to the connecting rod 4. The position of the flange 8 on the connecting rod 4 can be adjusted by rotating the flange 8, thereby adjusting the elastic force of the elastic member 7. The structure is simple and easy to operate.

[0063] In one embodiment, a slider 9 is further included, the slider 9 is fixedly sleeved on the friction sleeve 5, and the limit pin 6 is fixedly mounted on the slider 9. Generally, the friction sleeve 5 is made of soft material, and by sleeve-mounting the slider 9 on the friction sleeve 5 and arranging the limit pin 6 on the slider 9, it is ensured that the limit pin 6 provides a stable supporting force to the friction sleeve 5, thereby ensuring the stability of the display device support device.

[0064] In one embodiment, an adjusting member is provided on the slider 9, one end of which is in contact with the friction sleeve 5. The adjusting member is used to adjust the contact force between the friction sleeve 5 and the connecting rod 4 to adjust the friction coefficient between the friction sleeve 5 and the connecting rod 4. The greater the contact force between the friction sleeve 5 and the connecting rod 4, the greater the friction coefficient of the friction sleeve 5 on the connecting rod 4.

[0065] Specifically, the adjusting member may be a bolt, a pressure block, etc. In the embodiment of the present application, the structure of the adjusting member is not specifically limited.

[0066] Exemplarily, a threaded hole is provided on the slider 9, and a bolt is provided on the threaded hole. One end of the bolt abuts against the friction sleeve 5, and the pressure applied by the bolt to the friction sleeve 5 is adjusted by rotating the bolt, thereby adjusting the friction coefficient between the friction sleeve 5 and the connecting rod 4.

[0067] In one embodiment, it also includes a rotating shaft 10, and the base 2 is rotatably arranged on the rotating shaft 10. By arranging the rotating shaft 10 on the base 2, the base 2 can rotate around the rotating shaft 10, thereby driving the connecting arm 1 to rotate together, thereby increasing the adjustment angle of the display device support device.

[0068] In one embodiment, a hinge point 301 is provided on the base 3. By providing the hinge point 301 on the base 3, the assembly connected to the base 3 can be rotated and adjusted, thereby increasing the adjustment angle of the assembly on the display device support device.

[0069] According to an embodiment of the present utility model, on the other hand, in combination Figures 1 to 5 As shown, an ultrasonic device is also provided, including a display device supporting device and a rotating arm 11.

[0070] Specifically, one end of the rotating arm 11 is rotatably connected to the base 3 , and the other end of the rotating arm 11 is provided with an ultrasonic display 12 .

[0071] This ultrasonic device is configured by rotatably setting a rotating arm 11 on a base 3, and setting an ultrasonic display 12 on the rotating arm 11. The support force generated by a limit pin 6 on a display device support device on a connecting rod 4 is used to balance the vertical downward gravity generated by the ultrasonic display 12. The static friction force generated between the friction sleeve 5 and the connecting rod 4 and the elastic force applied by the elastic member 7 to the friction sleeve 5 are used to balance the display device support device, so that the force on the connecting rod 4 is balanced, and the ultrasonic display 12 can be stably supported at any position. The structure is simple and the volume is small.

[0072] The working principle of the ultrasonic device in this embodiment is described as follows:

[0073] The base 2 is rotatably arranged on the work surface via a rotating shaft 10, and the display device support device can rotate around the base 2 on a horizontal plane. Since the display device support device is a parallelogram connecting rod 4 mechanism, the display device support device can realize up and down lifting movement within a certain distance. One end of the rotating arm 11 is hinged to one end of the display device support device, so that the rotating arm 11 can rotate around one end of the display device support device on a horizontal plane, and the other end of the rotating arm 11 is connected to the ultrasonic display 12 via a mounting seat 13. The ultrasonic display 12 can rotate on the mounting seat 13, so that the ultrasonic display 12 can be adjusted at multiple angles, so that the ultrasonic display 12 can be stably supported at any position to meet the user's personal needs and comfort.

[0074] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A display device support device, characterized in that: include: A connecting arm (1), one end of which is rotatably mounted on the base (2), and the other end of which is rotatably mounted on the pedestal (3), wherein a slide groove (101) is provided on the connecting arm (1); A connecting rod (4), one end of which is rotatably disposed on the base (2), and the other end of which is rotatably disposed on the pedestal (3), and the connecting rod (4), the connecting arm (1), the base (2) and the pedestal (3) form a parallelogram connecting rod (4) mechanism; A friction sleeve (5) is sleeved on the connecting rod (4) and is suitable for moving along the axial direction of the connecting rod (4). A limit pin (6) is provided on the friction sleeve (5), and the limit pin (6) is slidably arranged in the sliding groove (101); An elastic member (7) has one end disposed on the connecting rod (4) and the other end connected to the friction sleeve (5). The elastic member (7) applies an elastic force to the friction sleeve (5) in a direction toward the base (2).

2. The display device support device according to claim 1, characterized in that: An installation cavity is reserved in the connecting arm (1), and the connecting rod (4) and the elastic member (7) are both arranged in the installation cavity.

3. The display device support device according to claim 2, characterized in that: The connecting arm (1) is provided with the sliding grooves (101) on both sides, and the limiting pins (6) are provided on both sides of the friction sleeve (5) corresponding to the sliding grooves (101).

4. The display device support device according to claim 1, characterized in that: The elastic member (7) is sleeved on the connecting rod (4), and the connecting rod (4) is adjustably provided with a flange (8) suitable for adjusting the position along the axial direction of the connecting rod (4), and one end of the elastic member (7) is fixed on the flange (8).

5. The display device support device according to claim 4, characterized in that: The flange (8) is threadedly connected to the connecting rod (4).

6. The display device support device according to claim 1, characterized in that: It also comprises a slider (9), wherein the slider (9) is fixedly sleeved on the friction sleeve (5), and the limit pin (6) is fixedly mounted on the slider (9).

7. The display device support device according to claim 6, characterized in that: The slider (9) is provided with an adjusting member, one end of which is in contact with the friction sleeve (5), and the size of the contact force between the friction sleeve (5) and the surface of the connecting rod (4) is adjusted by the adjusting member.

8. The display device supporting device according to any one of claims 1 to 7, characterized in that: It also comprises a rotating shaft (10), and the base (2) is rotatably arranged on the rotating shaft (10).

9. The display device supporting device according to any one of claims 1 to 7, characterized in that: The base (3) is provided with a hinge point (301).

10. An ultrasonic device, characterized in that: include: The display device supporting device according to any one of claims 1 to 9; A rotating arm (11) has one end rotatably connected to the base (3) and the other end is provided with an ultrasonic display (12).

Images