Angle-adjustable reference device

Abstract

The utility model provides an angle-adjustable reference device, which comprises a mounting assembly, a reference plate, a first connecting arm, a second connecting arm and a connecting sleeve, the mounting assembly comprises a connecting bolt and a connecting lantern ring, and the connecting bolt is sleeved in the connecting lantern ring and then is fixedly arranged on a bone nail; one end of the first connecting arm is integrally formed on the connecting lantern ring, and one end of the second connecting arm is integrally formed on the reference plate; a first sleeving port and a second sleeving port are formed in the connecting sleeve, the first connecting arm is sleeved with the first sleeving port, and the second connecting arm is sleeved with the second sleeving port. The first connecting arm and the second connecting arm are arranged to be of an aluminum alloy structure and a plastic structure respectively, the plasticity of the device is improved, the orientation and position of the reference device can be adjusted by changing the states of the first connecting arm and the second connecting arm, and the navigation precision is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, and relates to a reference device which can adjust the angle according to actual needs during the process of performing dental implant surgery. Background Art

[0002] During the dental implant surgery, at least optical locators, implant mobile phones, reference plates and other equipment are required. Both the implant mobile phone and the reference plate are provided with reflective marking points. The infrared light emitted by the optical locator is reflected back by the reflective marking points on the implant mobile phone and the reference plate. The optical locator then performs real-time positioning of the implant mobile phone and the reference plate based on the received infrared light. The real-time relative position of the implant mobile phone and the reference plate is used to determine the real-time relative position of the human jaw and the implant mobile phone, thereby performing navigation during the dental implant process.

[0003] When in use, the reference plate needs to be fixed on the patient's alveolar bone so that the reference plate and the patient remain relatively static. In actual applications, in many usage scenarios, such as implantation in edentulous jaws, the position of the reference plate needs to be finely adjusted to make the optical signal exchange between the optical locator and the reference plate more stable and reliable.

[0004] In the prior art, in order to prevent the reference board from shaking during use and affecting navigation accuracy, the structural components of the reference board are usually simplified as much as possible, and each structural component is set as a rigid structure. However, it is inconvenient to adjust the angle on a simple rigid structure. The industry is in urgent need of proposing a reference device that can adjust the angle according to actual needs to meet daily application needs. Summary of the invention

[0005] The technical problem to be solved by the utility model is that, in view of the above-mentioned defects of the prior art, an angle-adjustable reference device is provided, which can adjust the orientation and position of the reference device according to actual use requirements, and at the same time has the characteristics of structural stability, which is conducive to ensuring navigation accuracy.

[0006] The technical solution adopted by the utility model to solve the technical problem is as follows:

[0007] An angle-adjustable reference device, comprising:

[0008] An installation assembly, the installation assembly comprising a connecting bolt and a connecting collar, the connecting bolt being sleeved in the connecting collar and then fixedly arranged on the bone screw;

[0009] A reference plate, wherein at least four reflective marking points are arranged on the reference plate;

[0010] a first connecting arm and a second connecting arm, wherein the first connecting arm is an aluminum alloy structure, the second connecting arm is a plastic structure, one end of the first connecting arm is integrally formed and arranged on the connecting ring, and one end of the second connecting arm is integrally formed and arranged on the reference plate;

[0011] A connecting sleeve is provided with a first sleeve port and a second sleeve port, the first connecting arm is sleeved in the first sleeve port through an end away from the connecting sleeve ring, and the second connecting arm is sleeved in the second sleeve port through an end away from the reference plate.

[0012] Compared with the prior art, the beneficial effects of the present technical solution are: the first connecting arm and the second connecting arm are respectively set as an aluminum alloy structure and a plastic structure, thereby improving the plasticity of the device, so that the orientation and position of the reference device can be adjusted according to changing the states of the first connecting arm and the second connecting arm; at the same time, the aluminum alloy structure and the plastic structure provide sufficient supporting strength to avoid shaking during use, thereby effectively ensuring navigation accuracy.

[0013] Further, the connecting bolt is provided with a first external threaded portion, a second external threaded portion, a sleeve cylinder, a limiting disc and a locking nut, the first external threaded portion is located below the sleeve cylinder, the second external threaded portion is located above the sleeve cylinder, the limiting disc is located between the sleeve cylinder and the first external threaded portion, and the sleeve cylinder is a polyhedron structure;

[0014] The connecting bolt is connected to the bone screw through the first external threaded portion, the locking nut is threadedly connected to the second external threaded portion and fixes the connecting ring against the limiting disc, and the connecting ring is provided with a plurality of clamping grooves along the circumferential direction on the inner wall, and the sleeve column is sleeved and fixed in the connecting ring through the clamping grooves.

[0015] The beneficial effect of adopting the above scheme is that the connecting ring cooperates with the polyhedral structure of the sleeve column through multiple clamping grooves, and the connecting bolts can be installed and fixed. By clamping the sleeve column into different clamping grooves, the different orientations of the first connecting arm can be controlled, thereby adjusting the orientation and position of the reference device.

[0016] Furthermore, the socket column is a hexahedral structure that is small at the top and large at the bottom, including a square bottom, a square top and four side faces, the side faces include a first side, a second side, a third side and a fourth side, the area of ​​the square bottom is greater than the area of ​​the square top, the first side, the second side, the third side and the fourth side are connected in sequence and are located between the square bottom and the square top, the first side, the second side, the third side and the fourth side are trapezoidal faces, and guide slopes are formed on the first side, the second side, the third side and the fourth side, respectively.

[0017] The beneficial effect of adopting the above scheme is: the square bottom surface, the square top surface and the four side surfaces are used to form a sleeve column, and at the same time, the four sides form guide slopes respectively, which makes it convenient to insert the connecting ring during use, thereby improving the convenience of operation.

[0018] Furthermore, the connecting collar is provided with eight clamping grooves along the circumferential direction on the inner wall, and the sleeve column is clamped and fixed in four of the clamping grooves through the common edges between adjacent side surfaces.

[0019] The beneficial effect of adopting the above solution is that the eight snap-in grooves cooperate with the four adjacent side surfaces to provide a larger adjustable range, which can be applied to different scene requirements.

[0020] Furthermore, an internal threaded hole is provided on the connecting sleeve, and the internal threaded hole is located at a corresponding position of the first sleeve port and / or the second sleeve port. A locking bolt is provided on the internal threaded hole, and the locking bolt abuts against the first connecting arm and / or the second connecting arm after cooperating with the internal threaded hole.

[0021] The beneficial effect of adopting the above solution is: a locking bolt is provided on the internal threaded hole of the connecting sleeve, and the locking bolt is used to abut and fix the first connecting arm and / or the second connecting arm, so that the connection and fixing effect is better.

[0022] Furthermore, the reference plate is provided with a raised edge, a PET light-absorbing film is affixed to the reference plate, four circular holes are opened on the PET light-absorbing film, and the reflective marking points are affixed one by one in the circular holes.

[0023] The beneficial effect of adopting the above scheme is: after affixing the PET light-absorbing film on the reference board, a reflective marking point is affixed in the circular hole on the PET light-absorbing film, so that the reflective effect of the reflective marking point is better.

[0024] Further, the first connecting arm comprises a connecting rod and a sleeve connecting rod, the connecting rod is located at one end close to the connecting collar, and the sleeve connecting rod is located at one end close to the connecting sleeve;

[0025] The width of the connecting rod is the same as that of the sleeve rod, and the thickness of the connecting rod is smaller than that of the sleeve rod.

[0026] The beneficial effect of adopting the above scheme is: the first connecting arm is formed by a thinner connecting rod and a thicker sleeve rod, and combined with the plasticity characteristics of the aluminum alloy structure, when angle adjustment is required, the connecting rod can be deformed by external force to achieve the purpose of angle adjustment.

[0027] Further, the cross section of the connecting rod is rectangular, the cross section of the sleeve rod is square, and the cross section of the second connecting arm is square;

[0028] Correspondingly, the cross-sections of the first socket port and the second socket port are square.

[0029] The beneficial effect of adopting the above solution is that the matching angles between the first connecting arm and the second connecting arm and the first sleeve port and the second sleeve port are made more flexible.

[0030] Furthermore, the second connecting arm is provided with a reinforcing rib, and the reinforcing rib extends along the length direction of the second connecting arm.

[0031] The beneficial effect of adopting the above solution is that the second connecting arm is a plastic structure, and the structural strength of the second connecting arm is improved by providing reinforcing ribs.

[0032] Furthermore, the first sleeve port and the second sleeve port are sleeved with anti-slip silicone sleeves;

[0033] The first connecting arm is sleeved in the first sleeve port through a non-slip silicone sleeve, and the second connecting arm is sleeved in the second sleeve port through a non-slip silicone sleeve.

[0034] The beneficial effect of adopting the above solution is that a non-slip silicone sleeve is sleeved on the first sleeve port and the second sleeve port, and the first sleeve port and the second sleeve port can be filled with the non-slip silicone sleeve, thereby further improving the structural stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is an overall schematic diagram of the angle-adjustable reference device of the utility model.

[0036] Figure 2 Schematic diagrams of different embodiments of the angle-adjustable reference device of the present invention.

[0037] Figure 3 It is a schematic diagram of the connecting bolts in the angle-adjustable reference device of the utility model.

[0038] In the figure, the components represented by the reference numerals are as follows:

[0039] Mounting assembly 1, reference plate 2, first connecting arm 3, second connecting arm 4, connecting sleeve 5;

[0040] Connecting bolt 101, connecting collar 102, first external threaded portion 103, second external threaded portion 104, sleeve cylinder 105, limiting disc 106, locking nut 107, clamping groove 108;

[0041] Reflective marking point 201;

[0042] Connecting rod 301, sleeve rod 302;

[0043] Internal threaded hole 501. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0045] In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two components. When a component is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other component or there can also be a central component. When a component is considered to be "connected" to another element, it can be directly connected to the other element or there can be a central element at the same time. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0047] During the dental implant surgery, at least optical locators, implant mobile phones, reference plates and other equipment are required. Both the implant mobile phone and the reference plate are provided with reflective marking points. The infrared light emitted by the optical locator is reflected back by the reflective marking points on the implant mobile phone and the reference plate. The optical locator then performs real-time positioning of the implant mobile phone and the reference plate based on the received infrared light. The real-time relative position of the implant mobile phone and the reference plate is used to determine the real-time relative position of the human jaw and the implant mobile phone, thereby performing navigation during the dental implant process.

[0048] When in use, the reference plate needs to be fixed on the patient's alveolar bone so that the reference plate and the patient remain relatively static. In actual applications, in many usage scenarios, such as implantation in edentulous jaws, the position of the reference plate needs to be finely adjusted to make the optical signal exchange between the optical locator and the reference plate more stable and reliable.

[0049] In the prior art, in order to prevent the reference board from shaking during use and affecting navigation accuracy, the structural components of the reference board are usually simplified as much as possible, and each structural component is set as a rigid structure. However, it is inconvenient to adjust the angle on a simple rigid structure. It can be said that rigid structure and flexible adjustment are inherently contradictory. The industry is in urgent need of proposing a reference device that can adjust the angle according to actual needs to meet daily application needs.

[0050] like Figure 1 As shown, in order to solve the above problems, the utility model provides an angle-adjustable reference device, including a mounting assembly 1, a reference plate 2, a first connecting arm 3, a second connecting arm 4 and a connecting sleeve 5; wherein, the mounting assembly 1 is used to fix the device in the human oral cavity, the reference plate 2 is used to provide infrared light reflection conditions, the first connecting arm 3 and the second connecting arm 4 are used to connect the mounting assembly 1 and the reference plate 2 into an integral structure, and the connecting sleeve 5 is used to realize the connection and fixation of the first connecting arm 3 and the second connecting arm 4.

[0051] The installation assembly 1 includes a connecting bolt 101 and a connecting collar 102. The connecting bolt 101 is inserted into the connecting collar 102 and then fixedly installed on the bone screw. The bone screw is pre-buried and fixed on the patient's alveolar bone, and the bone screw is provided with an internal thread structure that matches the connecting bolt 101; when installation and fixation are required, the connecting bolt 101 can be inserted into the connecting collar 102 and then fixed to the bone screw, thereby achieving a fixed connection between the device and the patient's alveolar bone.

[0052] At least four reflective marking points 201 are arranged on the reference plate 2. When the infrared light emitted by the optical locator is irradiated on the reflective marking points 201, the infrared light emitted by the optical locator will be emitted. After the infrared light emitted back is received by the optical locator, the optical locator can locate the reference plate 2. Since the reference plate 2 is fixedly connected to the human body during use, the human body can be located.

[0053] The first connecting arm 3 is an aluminum alloy structure, and the second connecting arm 4 is a plastic structure. One end of the first connecting arm 3 is integrally formed and arranged on the connecting collar 102, and one end of the second connecting arm 4 is integrally formed and arranged on the reference plate 2. Correspondingly, a first sleeve port and a second sleeve port are provided on the connecting sleeve 5. The first connecting arm 3 is sleeved in the first sleeve port through one end away from the connecting collar 102, and the second connecting arm 4 is sleeved in the second sleeve port through one end away from the reference plate 2.

[0054] Based on the above structure, the first connecting arm 3 and the second connecting arm 4 are respectively set to an aluminum alloy structure and a plastic structure. During use, the first connecting arm 3 is deformed by applying an external force, and the second connecting arm 4 is deformed by heating and then fixed by cooling. The structures of the first connecting arm 3 and the second connecting arm 4 can be changed according to the situation to improve the plasticity of the device, thereby adjusting the orientation and position of the reference device; at the same time, the aluminum alloy structure and the plastic structure provide sufficient supporting strength to avoid shaking during use, thereby effectively ensuring navigation accuracy.

[0055] like Figure 2 As shown, the orientation and position of the reference device can be changed by changing the structure of the first connecting arm 3, or by setting different first connecting arms 3. In any case, based on this, the device can adjust the orientation and position of the reference device according to actual use requirements, and has the characteristics of structural stability, which is conducive to ensuring navigation accuracy.

[0056] like Figure 3As shown, the connecting bolt 101 is provided with a first external threaded portion 103, a second external threaded portion 104, a sleeve cylinder 105, a limiting disc 106 and a locking nut 107, the first external threaded portion 103 is located below the sleeve cylinder 105, the second external threaded portion 104 is located above the sleeve cylinder 105, the limiting disc 106 is located between the sleeve cylinder 105 and the first external threaded portion 103, and the sleeve cylinder 105 is a polyhedron structure; the connecting bolt 101 is connected to the bone screw through the first external threaded portion 103, the locking nut 107 is threadedly connected to the second external threaded portion 104 and fixes the connecting ring 102 to the limiting disc 106, the connecting ring 102 is provided with a plurality of clamping grooves 108 along the circumferential direction on the inner wall, and the sleeve cylinder 105 is sleeved and fixed in the connecting ring 102 through the clamping grooves 108.

[0057] During the installation process, the connecting bolt 101 is first fixed to the bone screw through the first external threaded portion 103, and then the connecting ring 102 is inserted into the sleeve column 105, so that the sleeve column 105 is sleeved and fixed in the connecting ring 102 through the clamping groove 108. At this time, the locking nut 107 is installed on the second external threaded portion 104. In the process of gradually tightening the locking nut 107, the locking nut 107 will fix the connecting ring 102 against the limiting disc 106, thereby achieving fixed installation.

[0058] Based on the above structure, the connecting ring 102 cooperates with the polyhedral structure of the socket column 105 through multiple clamping grooves 108. When installing and fixing the connecting bolt 101, the different orientations of the first connecting arm 3 can be controlled by clamping the socket column 105 into different clamping grooves 108, thereby adjusting the orientation and position of the reference device.

[0059] Preferably, the socket column 105 is a hexahedral structure that is small on the top and large on the bottom, including a square bottom, a square top and four side faces, the side faces include a first side, a second side, a third side and a fourth side, the area of ​​the square bottom is greater than the area of ​​the square top, the first side, the second side, the third side and the fourth side are connected in sequence and are located between the square bottom and the square top, the first side, the second side, the third side and the fourth side are trapezoidal faces, and guide slopes are formed on the first side, the second side, the third side and the fourth side, respectively.

[0060] Based on the above structure, the sleeve column 105 is formed by a square bottom surface, a square top surface and four side surfaces, and guide slopes are formed on the four side surfaces respectively. The guide slopes can make the sleeve connection between the sleeve column 105 and the clamping groove 108 smoother, making it convenient to insert the connecting ring 102 during use, thereby improving the operational convenience.

[0061] Specifically, the connecting collar 102 is provided with eight snap-fit ​​grooves 108 along the circumferential direction on the inner wall, and the sleeve column 105 is snap-fitted and fixed in four of the snap-fit ​​grooves 108 through the common edge between the adjacent side surfaces. The eight snap-fit ​​grooves 108 cooperate with the four adjacent side surfaces to provide a larger adjustable range, which can be applied to different scene requirements.

[0062] like Figure 1 As shown, an internal threaded hole 501 is provided on the connecting sleeve 5, and the internal threaded hole 501 is located at a corresponding position of the first sleeve port and / or the second sleeve port. A locking bolt is provided on the internal threaded hole 501, and the locking bolt abuts against the first connecting arm 3 and / or the second connecting arm 4 after cooperating with the internal threaded hole 501.

[0063] During installation, a locking bolt is arranged on the internal threaded hole 501 of the connecting sleeve 5. During the process of gradually tightening the locking bolt, the locking bolt will abut and fix on the first connecting arm 3 and / or the second connecting arm 4, so that the connection and fixing effect is better. It should be noted that in the embodiment provided by this scheme, the locking bolt is only arranged at the position corresponding to the second connecting arm 4, and in actual use, it can be arranged at the position corresponding to the first connecting arm 3 as needed.

[0064] Preferably, the reference plate 2 is provided with a raised edge, the reference plate 2 is affixed with a PET light-absorbing film, the PET light-absorbing film is provided with four circular holes, and the reflective marking points 201 are affixed one by one in the circular holes.

[0065] If the reflective marking point 201 is directly set on the reference plate 2, the reflective characteristics of the reference plate 2 and the reflective marking point 201 are relatively close, which will have a certain impact on the reflective effect of the reflective marking point 201. After a PET light-absorbing film is affixed to the reference plate 2, the reflective marking point 201 is affixed in the circular hole on the PET light-absorbing film, which can make the reflective effect of the reflective marking point 201 better.

[0066] like Figure 1As shown, the first connecting arm 3 includes a connecting rod 301 and a sleeve rod 302, wherein the connecting rod 301 is located at one end close to the connecting ring 102, and the sleeve rod 302 is located at one end close to the connecting sleeve 5; the width of the connecting rod 301 is the same as the width of the sleeve rod 302, and the thickness of the connecting rod 301 is less than the thickness of the sleeve rod 302.

[0067] Based on the above structure, the first connecting arm 3 is formed by a thinner connecting rod 301 and a thicker sleeve rod 302. Combined with the plasticity characteristics of the aluminum alloy structure, when angle adjustment is required, the connecting rod 301 can be deformed by external force to achieve the purpose of angle adjustment.

[0068] Preferably, the cross section of the connecting rod 301 is rectangular, the cross section of the sleeve rod 302 is square, and the cross section of the second connecting arm 4 is square; correspondingly, the cross sections of the first sleeve port and the second sleeve port are square.

[0069] The above-mentioned structural arrangement can further expand the angle adjustment function of the device. The cross-section of the first connecting arm 3 and the second connecting arm 4 near the connecting sleeve 5 is square, which makes it possible for the first connecting arm 3 and the second connecting arm 4 to be connected to the connecting sleeve 5 in four ways, thereby making the matching angle between the first connecting arm 3 and the second connecting arm 4 and the first sleeve port and the second sleeve port more flexible.

[0070] Preferably, the second connecting arm 4 is provided with reinforcing ribs, and the reinforcing ribs extend along the length direction of the second connecting arm 4. The second connecting arm 4 is a plastic structure, and the structural strength of the second connecting arm 4 is improved by providing the reinforcing ribs.

[0071] Preferably, the first sleeve port and the second sleeve port are sleeved with anti-skid silicone sleeves; the first connecting arm 3 is sleeved in the first sleeve port through the anti-skid silicone sleeve, and the second connecting arm 4 is sleeved in the second sleeve port through the anti-skid silicone sleeve. The first sleeve port and the second sleeve port are sleeved with anti-skid silicone sleeves, and the first sleeve port and the second sleeve port can be filled with the anti-skid silicone sleeves, further improving the structural stability.

[0072] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made according to the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. An angle-adjustable reference device, characterized in that: include: An installation assembly, the installation assembly comprising a connecting bolt and a connecting collar, the connecting bolt being sleeved in the connecting collar and then fixedly arranged on the bone screw; A reference plate, wherein at least four reflective marking points are arranged on the reference plate; a first connecting arm and a second connecting arm, wherein the first connecting arm is an aluminum alloy structure, the second connecting arm is a plastic structure, one end of the first connecting arm is integrally formed and arranged on the connecting ring, and one end of the second connecting arm is integrally formed and arranged on the reference plate; A connecting sleeve is provided with a first sleeve port and a second sleeve port, the first connecting arm is sleeved in the first sleeve port through an end away from the connecting sleeve ring, and the second connecting arm is sleeved in the second sleeve port through an end away from the reference plate.

2. The angle-adjustable reference device according to claim 1, characterized in that: The connecting bolt is provided with a first external threaded portion, a second external threaded portion, a sleeve cylinder, a limiting disc and a locking nut, the first external threaded portion is located below the sleeve cylinder, the second external threaded portion is located above the sleeve cylinder, the limiting disc is located between the sleeve cylinder and the first external threaded portion, and the sleeve cylinder is a polyhedron structure; The connecting bolt is connected to the bone screw through the first external threaded portion, the locking nut is threadedly connected to the second external threaded portion and fixes the connecting ring against the limiting disc, and the connecting ring is provided with a plurality of clamping grooves along the circumferential direction on the inner wall, and the sleeve column is sleeved and fixed in the connecting ring through the clamping grooves.

3. The angle-adjustable reference device according to claim 2, characterized in that: The socket column is a hexahedral structure that is small at the top and large at the bottom, including a square bottom, a square top and four side surfaces, the side surfaces including a first side surface, a second side surface, a third side surface and a fourth side surface, the area of ​​the square bottom surface is greater than the area of ​​the square top surface, the first side surface, the second side surface, the third side surface and the fourth side surface are connected in sequence and are located between the square bottom surface and the square top surface, the first side surface, the second side surface, the third side surface and the fourth side surface are trapezoidal surfaces, and guide slopes are formed on the first side surface, the second side surface, the third side surface and the fourth side surface, respectively.

4. The angle-adjustable reference device according to claim 3, characterized in that: The connecting collar is provided with eight clamping grooves along the circumferential direction on the inner wall, and the sleeve column is clamped and fixed in four of the clamping grooves through the common edges between adjacent side surfaces.

5. The angle-adjustable reference device according to claim 1, characterized in that: An internal threaded hole is provided on the connecting sleeve, and the internal threaded hole is located at a corresponding position of the first sleeve port and / or the second sleeve port. A locking bolt is provided on the internal threaded hole, and the locking bolt abuts against the first connecting arm and / or the second connecting arm after cooperating with the internal threaded hole.

6. The angle-adjustable reference device according to claim 1, characterized in that: The reference plate is provided with a raised edge, a PET light-absorbing film is attached to the reference plate, four circular holes are opened on the PET light-absorbing film, and the reflective marking points are attached one by one in the circular holes.

7. The angle-adjustable reference device according to claim 1, characterized in that: The first connecting arm comprises a connecting rod and a sleeve connecting rod, wherein the connecting rod is located at one end close to the connecting collar, and the sleeve connecting rod is located at one end close to the connecting sleeve; The width of the connecting rod is the same as that of the sleeve rod, and the thickness of the connecting rod is smaller than that of the sleeve rod.

8. The angle-adjustable reference device according to claim 7, characterized in that: The cross section of the connecting rod is rectangular, the cross section of the sleeve rod is square, and the cross section of the second connecting arm is square; Correspondingly, the cross-sections of the first socket port and the second socket port are square.

9. An angle-adjustable reference device according to any one of claims 1 to 8, characterized in that: The second connecting arm is provided with a reinforcing rib, and the reinforcing rib extends along the length direction of the second connecting arm.

10. An angle-adjustable reference device according to any one of claims 1 to 8, characterized in that: The first sleeve port and the second sleeve port are sleeved with anti-slip silicone sleeves; The first connecting arm is sleeved in the first sleeve port through a non-slip silicone sleeve, and the second connecting arm is sleeved in the second sleeve port through a non-slip silicone sleeve.

Images