Synchronous moving mechanism, side head clamp assembly and oral cavity CBCT
By employing a synchronous movement mechanism in the CBCT lateral head clip, and utilizing the threaded engagement of the base, rotating rod, and connecting shaft, the defects of the pulley connection method are solved, enabling synchronous adjustment of the ear clip, improving the overlap and image quality of the lateral images, while reducing costs and maintenance difficulty.
Patent Information
- Application Number
- CN202423037822.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-12-10
AI Technical Summary
The existing CBCT lateral head clip uses a belt pulley connection for synchronous ear clip movement, which has problems such as insufficient structural compactness, high cost and difficulty in maintenance, making it difficult to meet the needs of lateral radiograph imaging with high overlap.
The synchronous movement mechanism, including a base, a rotating rod and a connecting shaft, is adopted. The synchronous adjustment of the ear clips on both sides is achieved through the cooperation of threads and bearings. The structure is compact, low in cost and easy to maintain.
It improves the ease of adjustment and stability of the ear clip, enhances the overlap of the side plates, improves image quality, and reduces manufacturing and maintenance costs.
Smart Images
Figure CN223845681U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of CBCT lateral head clamp technology, specifically to a synchronous movement mechanism, and a lateral head clamp assembly including the synchronous movement mechanism and an oral CBCT. Background Technology
[0002] CBCT, or cone-beam computed tomography, is a device that uses cone-beam imaging to reconstruct computed tomography (CBCT). Its principle involves an X-ray generator delivering a low dose of radiation in a circular digital projection around the subject. The data obtained from the intersection of multiple digital projections around the subject are then reconstructed in a computer to obtain a three-dimensional image. CBCT can objectively reflect the three-dimensional spatial structure of maxillofacial tissues, providing objective evidence for disease diagnosis, treatment planning, prognosis, and observation during the recovery period.
[0003] When taking lateral radiographs using CBCT, the ear clips at both ends of the lateral head clip need to move synchronously. Currently, most lateral head clips on the market use a pulley connection to achieve synchronous movement of the ear clips at both ends. The pulley drive connection method has disadvantages such as insufficient structural compactness, high cost, and difficulty in maintenance. This is difficult to meet the shooting requirements for lateral radiographs that require high overlap. Utility Model Content
[0004] This utility model provides a synchronous moving mechanism, as well as a lateral head clip assembly and an oral CBCT including the synchronous moving mechanism. The synchronous moving mechanism has the characteristics of compact structure, low cost and convenient maintenance. At the same time, the application of the lateral head clip assembly and oral CBCT of the synchronous moving mechanism can improve the convenience and stability of ear clip adjustment, which is conducive to improving the overlap of lateral radiographs and thus improving the radiograph quality.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0006] The synchronous moving mechanism includes a base, a rotating rod that is rotatably arranged along the length of the inner cavity of the base, and two connecting shafts that are threaded to the ends of the rotating rod and slidably connected to the base. When any of the connecting shafts moves along the axial direction of the rotating rod, it can synchronously drive the other connecting shaft to move in the opposite direction or in the opposite direction.
[0007] Preferably, the rotating rod includes two rods fixed end to end, and the connecting part of the two rods is rotatably disposed in the inner cavity of the base through a bearing.
[0008] Preferably, the substrate is a cuboid structure with an internal cavity, and the center of the substrate cavity has a mounting groove for mating with the bearing.
[0009] Preferably, one end of the rod is provided with a positioning sleeve, and the other end of the rod is provided with a positioning post that matches the positioning sleeve.
[0010] Preferably, an outer thread is arranged on the outer wall of the rod body away from the bearing, and an accommodating cavity is arranged in the connecting shaft, and an inner thread matched with the outer thread is arranged on the inner wall of the accommodating cavity near the end of the rod body.
[0011] Preferably, the end of the connecting shaft away from the rod body extends to the outside of the base body, and the base body is provided with through holes matched with the connecting shaft at both ends.
[0012] Preferably, the bottom wall of the base body is provided with a guide groove distributed along the length direction thereof, and the outer wall of the bottom end of the connecting shaft arranged in the inner cavity of the base body is provided with a sliding column matched with the guide groove.
[0013] Preferably, the bottom of the base body is provided with a sealing plate.
[0014] The application also provides a lateral head clamp assembly comprising the synchronous moving mechanism, and further comprising a base arranged outside the base body and ear clamps arranged at the ends of the connecting shafts.
[0015] The application also provides an oral CBCT comprising the lateral head clamp assembly.
[0016] According to the above technical solution, the application has the following advantages:
[0017] 1. In the synchronous moving mechanism, when the connecting shaft on one side moves into the base body along the rotating rod, the rotating rod can be synchronously driven to rotate, and the rotating rod further drives the connecting shaft on the other side to move into the base body along the rotating rod, so as to realize the effect of the movement of the two connecting shafts towards each other; when the connecting shaft on one side moves out of the base body along the rotating rod, the rotating rod can be synchronously driven to rotate, and the rotating rod further drives the connecting shaft on the other side to move out of the base body along the rotating rod, so as to realize the effect of the movement of the two connecting shafts in opposite directions, thereby realizing the synchronous movement of the two connecting shafts; when the mechanism is applied to the lateral head clamp, the synchronous adjustment of the two ear clamps can be realized, the lateral film has high coincidence degree, and the quality of the image is improved; the base body, the rotating rod and the connecting shaft are connected in a close cooperation manner, so that the structure is compact, the space utilization rate is high, the manufacturing and installation cost is low, and the maintenance only needs to regularly apply lubricating oil, so that the maintenance is convenient.
[0018] 2. In the application, the end of the rod body on one side is provided with a positioning sleeve, and the end of the rod body on the other side is provided with a positioning column matched with the positioning sleeve; the positioning sleeve and the positioning column are matched to realize the fixed connection between the two rod bodies; since the two rod bodies are detachably connected, the assembly and maintenance are convenient.
[0019] 3. The utility model discloses, the outer wall of the pole body is equipped with outer thread, the inner wall of connecting shaft is equipped with inner thread, utilize the cooperation of outer thread and inner thread, can when connecting shaft linearly removes along the base body, drive pole body to rotate through the threaded connection mode, to facilitate obtaining the integral rotation of rotating pole, to reach the purpose of synchronous drive of both sides pole body and connecting shaft.
[0020] 4. The utility model discloses, the base body bottom wall is equipped with the guide groove along its length direction distribution, the connecting shaft is placed in the bottom end outer wall of base body inner chamber and is equipped with the slide column that cooperates with the guide groove, like this can utilize the movement of slide column along the guide groove to realize the sliding of connecting shaft along the base body, to avoid the threaded connection mode of connecting shaft and pole body to the linear motion of connecting shaft causes the influence, namely can make the linear displacement of connecting shaft stably in the base body. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is the perspective view of synchronous movement mechanism that the utility model provides;
[0022] Figure 2 It is the cutaway view of synchronous movement mechanism;
[0023] Figure 3 It is the cutaway perspective view of synchronous movement mechanism;
[0024] Figure 4 It is the structural schematic diagram of rotating pole;
[0025] Figure 5 It is the schematic diagram of side position head clamp that the utility model provides;
[0026] Figure 6 It is Figure 5 the side view;
[0027] Figure 7 It is Figure 6 the schematic diagram of A-A section in
[0028] In the drawing: 10, base body;110, through -hole;120, guide groove;130, sealing plate;20, rotating pole;210, pole body;211, outer thread;30, connecting shaft;310, inner thread;320, slide column;40, bearing;50, installation slot;60, positioning sleeve;70, positioning column;80, base;90, ear clamp. DETAILED DESCRIPTION
[0029] The preferred embodiment of the utility model is described in detail below in combination with the drawings.
[0030] To realize the above-mentioned purpose, the embodiment of the utility model adopts the following technical scheme: refer to Figure 1, Synchronous moving mechanism, comprising base body 10, rotating rod 20 and connecting shaft 30, base body 10 is the cuboid structure with cavity inside, rotating rod 20 is arranged in the inner cavity of base body and is arranged along the length direction of the inner cavity of base body, the number of connecting shaft 30 is two, and the two connecting shafts 30 are threadedly arranged at the two ends of the rotating rod, and the connecting shaft 30 is slidably connected with the base body 10, when any connecting shaft 30 moves along the axial direction of the rotating rod, the other connecting shaft can be synchronously driven to move in the same direction or in the opposite direction, that is, when the connecting shaft on one side moves into the base body along the rotating rod, the rotating rod can be synchronously driven to rotate, and the rotating rod further drives the connecting shaft on the other side to move into the base body along the rotating rod, so that the connecting shafts on both sides move in the same direction; when the connecting shaft on one side moves out of the base body along the rotating rod, the rotating rod can be synchronously driven to rotate, and the rotating rod further drives the connecting shaft on the other side to move out of the base body along the rotating rod, so that the connecting shafts on both sides move in opposite directions, thereby realizing synchronous movement of the connecting shafts on both sides, so that when the mechanism is applied to a lateral head clamp, synchronous adjustment of the ear clamps on both sides can be realized, the coincidence degree of the lateral radiographs is high, and the quality of the images is improved, and the connecting mode of the base body, the rotating rod and the connecting shaft is compact, the space utilization rate is high, the manufacturing and installation cost is low, and the maintenance only needs to regularly apply lubricating oil, so that the maintenance is convenient.
[0031] Referring to Figure 4 , as a preferred technical solution of the embodiment, the rotating rod 20 comprises two rod bodies 210, wherein the two rod bodies 210 are fixedly connected at the ends and the connecting portions of the two rod bodies are rotatably arranged in the inner cavity of the base body 10 through bearings 40.
[0032] Referring to Figure 3 , further, in order to realize the installation of the bearings 40, an installation groove 50 matched with the bearings 40 is arranged in the middle of the cavity of the base body 10, that is, the bearings 40 in the embodiment are arranged in the middle of the cavity of the base body, and in use, after the connection of the two rod bodies is completed, the bearings are installed at the connecting portions of the two rod bodies, and then the bearings can be embedded in the installation groove, so that the two rod bodies are rotatably arranged along the inner cavity of the base body.
[0033] Referring to Figure 2 , Figure 3 , in some embodiments, in order to realize the connection of the two rod bodies 210, one end of one rod body 210 is provided with a positioning sleeve 60, and the other end of the other rod body 210 is provided with a positioning column 70 matched with the positioning sleeve, and in use, the two rod bodies are fixedly connected at the ends through the butt joint of the positioning column and the positioning sleeve. It should be noted that the positioning sleeve and the positioning column are inserted and matched, which has the advantages of compact structure and convenient disassembly and assembly.
[0034] Referring to Figure 3Further, in order to realize the sliding of the connecting shaft along the base body while driving the two side rod bodies to rotate synchronously, an external thread 211 is formed on the outer wall of the rod body 210 away from the bearing 40, and an accommodating cavity is arranged in the connecting shaft 30, and an internal thread 310 matching the external thread is formed on the inner wall of the accommodating cavity close to the rod body. When the connecting shaft on one side slides out along the base body, the connecting shaft on this side is linearly moved, and the driving force is generated on the rod body on this side by the cooperation of the internal thread and the external thread, so that the rod body rotates. Since the two rod bodies are integrated, the rod body on one side can drive the rod body on the other side to rotate synchronously, so that the connecting shaft on the other side can slide out when the rod body on the other side rotates. Therefore, the effect of synchronous sliding of the connecting shafts on both sides is realized. It should be noted that the principle of synchronous sliding of the connecting shafts on both sides along the base body is the same as the above-mentioned principle of sliding out, and will not be described in detail here.
[0035] Further, the connecting shaft 30 extends to the outside of the base body 10 away from the rod body 210, and in order to facilitate the sliding of the connecting shaft 30 along the base body, a through hole 110 is formed at both ends of the base body 10, which matches the outer diameter of the connecting shaft 30. The connecting shaft can slide along the base body through the through hole 110.
[0036] Referring to Figure 2 , Figure 3 Further, in order to realize the stable movement of the connecting shaft 30 along the base body 10 and avoid the rotation of the connecting shaft during the movement, a guide groove 120 is arranged on the bottom wall of the base body 10 along the length direction, and a slide column 320 is arranged on the bottom end outer wall of the connecting shaft 30 in the cavity of the base body 10. The slide column 320 matches the guide groove 120. During use, the slide column is located in the guide groove, and when the connecting shaft is driven to slide along the base body, the slide column can move left and right along the guide groove. Since the connecting shaft is linearly moved, the rod body inside the connecting shaft can be driven to rotate when the connecting shaft moves.
[0037] In some embodiments, in order to facilitate the sealing treatment of the guide groove 120 and other components on the bottom of the base body 10, and avoid the adverse effect on the transmission between mechanisms, a sealing plate 130 is arranged on the bottom of the base body 10. During use, the sealing plate is installed on the bottom of the base body by bolts and other fasteners, so that the base body forms a complete cuboid structure.
[0038] In use, when the two connecting shafts 30 need to move synchronously in the same direction or in the opposite direction, specifically in the process of moving in the same direction, the connecting shaft 30 on one side can be moved along the rod body 210, and the connecting shaft 30 on the side can drive the rod body 210 on the side to rotate, because the rod bodies 210 on the two sides are integrated, the rod body 210 on the other side can be synchronously driven to rotate, and the connecting shaft 30 on the other side can be moved along the rod body 210, thereby achieving the effect of moving in the same direction of the two connecting shafts 30; specifically in the process of moving in the opposite direction, the connecting shaft 30 on one side can be moved along the rod body 210, and the connecting shaft 30 on the side can drive the rod body 210 on the side to rotate, because the rod bodies 210 on the two sides are integrated, the rod body 210 on the other side can be driven to rotate, and the connecting shaft 30 on the other side can be moved along the rod body 210, thereby achieving the effect of moving in the opposite direction of the two connecting shafts 30. In summary, the effect of synchronously moving the two connecting shafts 30 is achieved.
[0039] Referring to Figure 5 , Figure 6 , Figure 7 The application also provides a lateral head clamp assembly, which comprises the synchronous moving mechanism, a base 80 and ear clamps 90. The base 80 is arranged outside the base body 10, and the ear clamps 90 are arranged at the ends of the two connecting shafts 30. In use, when the positions of the two ear clamps need to be adjusted, the connecting shafts can be driven to slide along the base body. Because the connecting shafts are simultaneously connected with the rod bodies in a threaded manner, the rod bodies can be driven to rotate by the threaded engagement force, and the rod bodies on the two sides can be driven to move in the same direction or in the opposite direction by the rotation of the rod bodies, so as to achieve the effect of adjusting the distance between the two ear clamps. In this way, the ear clamps are adjusted by the cooperation of the base body, the rotating rod and the connecting shafts. Compared with the traditional belt wheel connection mode, the structure is compact, the space utilization rate is high, the manufacturing and installation costs are low, and the maintenance only needs to regularly apply lubricating oil, which is convenient for maintenance.
[0040] Meanwhile, the application also provides an oral CBCT comprising the lateral head clamp assembly. By applying the lateral head clamp assembly to the oral CBCT, the orientation of the ear clamps can be adjusted. Because the lateral head clamp assembly adopts a novel structure that is compact, low in cost and easy to maintain, the coincidence degree of the lateral film taken by the oral CBCT can be improved, so as to further improve the image quality.
[0041] The above-described embodiments only describe the preferred embodiments of the application, and do not limit the scope of the application. Without departing from the design spirit of the application, various modifications and improvements to the technical solutions of the application made by those skilled in the art shall fall within the protection scope of the claims of the application.
Claims
1. A synchronous moving mechanism characterized by comprising: The synchronous moving mechanism comprises a base (10), a rotating rod (20) arranged along the length direction of the inner cavity of the base, and two connecting shafts (30) arranged at the ends of the rotating rod and connected to the base (10) in a sliding manner, wherein any connecting shaft (30) can drive the other connecting shaft to move in the same direction or in the opposite direction when the connecting shaft (30) moves along the axial direction of the rotating rod.
2. The synchronous movement mechanism according to claim 1, characterized in that, The rotating rod (20) comprises two rod bodies (210) fixed at the ends, and the connecting portions of the two rod bodies are arranged in the inner cavity of the base (10) in a rotating manner through a bearing (40).
3. The synchronous movement mechanism of claim 1, wherein, The base (10) is a cuboid structure with a cavity, and the middle portion of the cavity of the base (10) is provided with a mounting groove (50) matched with the bearing (40).
4. The synchronous movement mechanism of claim 2, wherein, The end of one rod body (210) is provided with a positioning sleeve (60), and the end of the other rod body (210) is provided with a positioning column (70) matched with the positioning sleeve.
5. The synchronous movement mechanism of claim 2, wherein, The outer wall of the end of the rod body (210) away from the bearing (40) is provided with an external thread (211), the inner cavity of the connecting shaft (30) is provided with an accommodating cavity, and the inner wall of the end of the accommodating cavity close to the rod body is provided with an internal thread (310) matched with the external thread.
6. The synchronous movement mechanism of claim 1, wherein, The end of the connecting shaft (30) away from the rod body (210) extends to the outside of the base (10), and the two ends of the base (10) are provided with through holes (110) matched with the connecting shaft (30).
7. The synchronous movement mechanism of claim 6, wherein, The bottom wall of the base (10) is provided with a guide groove (120) distributed along the length direction thereof, and the outer wall of the bottom end of the inner cavity of the base (10) is provided with a sliding column (320) matched with the guide groove (120).
8. The synchronous movement mechanism of claim 7, wherein, The bottom of the base (10) is provided with a sealing plate (130).
9. A side-lift head clamp assembly, characterized in that The side head clamping assembly comprises the synchronous moving mechanism of any one of claims 1-8, and further comprises a base (80) covering the outside of the base (10) and ear clamps (90) arranged at the ends of the two connecting shafts (30).
10. An oral CBCT, characterized in that, The side head clamping assembly comprises the side head clamping assembly of claim 9.