Oral cavity CT side position head clamp locking mechanism and oral cavity CT

Abstract

The utility model provides an oral cavity CT (Computed Tomography) side position head clamp locking mechanism, which belongs to the technical field of CT equipment, and comprises a shell, connecting shafts arranged on two opposite sides of the shell, ear clamps arranged at the end parts of the connecting shafts, and an adjusting component, the adjusting assembly comprises an adjusting hole and a connecting block, the adjusting hole is formed in the connecting part of the ear clip and is in clearance fit with the connecting shaft, the connecting block is contained in the inner cavity of the ear clip and is fixedly connected with the end part of the connecting shaft, and the fastening piece is arranged at the bottom end of the ear clip. The gap between the adjusting hole and the connecting shaft can be used for adjusting the position of the ear clip in an up-and-down moving mode, after adjustment is completed, the fastener is used for driving the connecting block and the ear clip to move in the axial direction of the connecting shaft, and finally the ear clip is fixed to the shaft end of the connecting shaft. Therefore, the adaptability of the oral cavity CT side position head clamp locking mechanism and the oral cavity CT comprising the locking mechanism can be improved, and the side position film shooting effect and accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of CT equipment, in particular to a locking mechanism for a lateral head clamp of an oral CT and an oral CT. Background Art

[0002] Oral CT is a new type of oral X-ray imaging system that can provide three-dimensional images of the patient's oral and maxillofacial region and is widely used in various oral departments such as dental implant diagnosis, preoperative planning for oral surgery, and orthodontic treatment plan design. Compared with traditional two-dimensional images such as panoramic films and anteroposterior and lateral films, oral CT images not only have the advantages of no overlap and no distortion but also can provide more information, so they are widely welcomed by doctors. At the same time, during cephalometric measurement, a lateral head clamp is usually used to fix the user's head. Currently, on the market, the splints at both ends of most lateral head clamps are connected by screws or directly glued, which results in the inability to adjust the upper and lower positions of the left and right splints, poor adaptability, and poor symmetry of the lateral films taken. Summary of the Utility Model

[0003] The locking mechanism for a lateral head clamp of an oral CT and the oral CT provided by the utility model can realize the up-and-down adjustment of the two side splints and can lock and fix the positions of the adjusted splints, and has the advantages of simple structure, low cost, stable overall structure, and strong reliability.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A locking mechanism for a lateral head clamp of an oral CT includes a housing, connecting shafts provided on two opposite sides of the housing, and ear clips provided at the ends of the connecting shafts, and further includes:

[0006] An adjusting component, the adjusting component includes an adjusting hole provided at the connecting part of the ear clip and having a clearance fit with the connecting shaft, and a connecting block accommodated in the inner cavity of the ear clip and fixedly connected to the end of the connecting shaft; and

[0007] A fastening member, the fastening member is provided at the bottom end of the ear clip for locking the ear clip to the end of the connecting shaft after the connecting shaft is adjusted to move along the adjusting hole.

[0008] Preferably, the adjusting hole is a strip-shaped hole distributed along the vertical direction of the housing.

[0009] Preferably, a receiving groove communicating with the adjusting hole is provided inside the ear clip, and the end of the connecting shaft away from the housing passes through the adjusting hole and the receiving groove and is key-connected to the connecting block.

[0010] Preferably, a serrated contact surface is provided on one side of the connecting block close to the connecting shaft.

[0011] Preferably, an oblique groove is provided on the shaft wall at one end of the connecting shaft placed inside the accommodating groove, and the oblique groove includes a straight groove surface extending from the outer wall of the connecting shaft to the axis center of the connecting shaft, an oblique groove surface extending from the outer wall of the connecting shaft to the straight groove surface, and a groove bottom surface arranged between the straight groove surface and the oblique groove surface, wherein the inclination direction of the oblique groove surface is arranged along the direction away from the connecting block.

[0012] Preferably, the fastener includes a fastening column that cooperates with the inclined groove surface to drive the ear clip to move toward the axial end of the connecting shaft.

[0013] Preferably, the oral CT lateral head clamp locking mechanism further comprises a flat pad which is arranged at the end of the connecting shaft and fits with the outer side surface of the adjustment hole.

[0014] Preferably, the outer side surface of the adjustment hole is provided with evenly distributed connecting ribs.

[0015] Preferably, a mounting block is provided inside the shell, and threaded rods connected to each other are provided inside the mounting block, and the connecting axis is symmetrically arranged at the ends of the two connected threaded rods.

[0016] Preferably, a fixing portion is provided on a side of the shell away from the ear clip clamping portion.

[0017] An oral CT comprises the aforementioned oral CT lateral head clamp locking mechanism.

[0018] It can be seen from the above technical solutions that the utility model has the following beneficial effects:

[0019] 1. In the utility model, since the adjustment hole is arranged in cooperation with the clearance of the connecting shaft, when the upper and lower positions of the ear clips on both sides need to be adjusted, the clearance between the adjustment hole and the connecting shaft can be utilized to adjust the position of the ear clips to move up and down. After the adjustment is completed, the fastener is utilized to drive the connecting block and the ear clip to move axially along the connecting shaft, and finally the ear clip is fixed to the axial end of the connecting shaft, thereby improving the adaptability of the oral CT lateral head clamp locking mechanism and the oral CT including the aforementioned locking mechanism, and improving the effect and accuracy of lateral radiographing.

[0020] 2. In the utility model, a serrated contact surface is provided on the side of the connecting block, and a connecting rib is provided on the outer side wall of the adjusting hole, so that when the fastener drives the connecting block and the ear clip to contact the end of the connecting shaft, the friction of the contact surface can be increased through the contact between the serrated contact surface and the inner wall of the ear clip, and the contact between the connecting rib and the flat pad, thereby improving the stability of the connection between the ear clip and the axial end of the connecting shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is one of the three-dimensional schematic diagrams of the utility model;

[0022] Figure 2This is the second three-dimensional schematic diagram of the present utility model;

[0023] Figure 3 This is a partial cross-sectional view of the front view of the present utility model;

[0024] Figure 4 It is Figure 3 The schematic diagram of the A-A cross-section in

[0025] Figure 5 This is one of the exploded views of the connection between the connecting shaft and the ear clip;

[0026] Figure 6 This is the second exploded view of the connection between the connecting shaft and the ear clip;

[0027] Figure 7 It is Figure 6 The partial enlarged view of part B in

[0028] Figure 8 This is the structural schematic diagram of the mounting block inside the housing;

[0029] Figure 9 This is the structural schematic diagram of the threaded rod inside the mounting block.

[0030] In the figure: 10, housing; 20, connecting shaft; 210, inclined groove; 211, straight groove surface; 212, inclined groove surface; 213, groove bottom surface; 30, ear clip; 310, accommodating groove; 410, adjusting hole; 411, connecting rib; 420, connecting block; 421, serrated contact surface; 50, flat washer; 60, mounting block; 610, threaded rod; 70, fixing part. Specific Embodiment

[0031] The following will make a detailed description of a preferred embodiment of the present utility model in conjunction with the accompanying drawings.

[0032] To achieve the above object, the embodiments of the present utility model adopt the following technical solutions: Refer to Figure 1 , Figure 2, The lateral head clamp locking mechanism for oral CT includes a housing 10, a connecting shaft 20, and ear clips 30. The connecting shaft 20 is provided on two opposite sides of the housing. The ear clips 30 are arranged at the ends of the connecting shaft, and the number of ear clips is two, so that during measurement, the two ear clips can be respectively fixed to the user's ear positions. It should be noted that the ear clip includes a connecting portion connected to the connecting shaft and a clamping portion for fixing the user's ear. Further, the locking mechanism further includes an adjusting assembly and a fastener. Among them, the adjusting assembly includes an adjusting hole 410 and a connecting block 420. The adjusting hole 410 is provided in the connecting portion of the ear clip 30, and the adjusting hole is arranged in clearance fit with the connecting shaft 20. The connecting block 420 is accommodated in the inner cavity of the ear clip, and the connecting block is fixedly connected to the end of the connecting shaft. At the same time, the fastener is arranged at the bottom end of the ear clip for locking the ear clip 30 to the shaft end of the connecting shaft after the connecting shaft 20 is adjusted and moved along the adjusting hole. Since the adjusting hole is arranged in clearance fit with the connecting shaft, when it is necessary to adjust the up and down positions of the ear clips on both sides, the clearance between the adjusting hole and the connecting shaft can be utilized to enable the ear clip to perform position adjustment of up and down movement. After the adjustment is completed, the fastener is used to drive the connecting block and the ear clip to move axially along the connecting shaft, and finally the ear clip is fixed to the shaft end of the connecting shaft.

[0033] The adjusting assembly of the present utility model for adjusting the up and down positions of the ear clips has a simple structure. The structural parts used, except for standard parts, are all simple parts, and the assembly is simple, facilitating installation. At the same time, the cost of the parts is low, and the entire locking mechanism has a stable structure and strong reliability.

[0034] Refer to Figure 4 , As a preferred technical solution of this embodiment, the adjusting hole 410 is a strip-shaped hole, and the strip-shaped adjusting hole is distributed along the vertical direction of the housing 10. By setting the adjusting hole as a vertically distributed long strip, when adjusting the up and down positions of the ear clips, the movement of the connecting shaft relative to the adjusting hole can be utilized to realize the position adjustment of the ear clips.

[0035] Refer to Figure 3 , Figure 5 , Figure 6 , As a preferred technical solution of this embodiment, in order to install the connecting block 420, a receiving groove 310 is opened inside the ear clip 30. The receiving groove is communicated with the adjusting hole 410. At the same time, the end of the connecting shaft 20 away from the housing 10 passes through the adjusting hole 410 and the receiving groove 310 and is key-connected to the connecting block 420. Specifically, the connecting block is provided with a shaft hole matching the connecting shaft. At the same time, when realizing the connection between the connecting shaft and the connecting block, matching key grooves can be opened on the outer part of the connecting shaft and the inner wall of the shaft hole of the connecting block. During installation, corresponding connection keys are arranged at the key groove positions of the connecting shaft and the connecting block to realize the effective connection and cooperation between the connecting block and the connecting shaft.

[0036] Refer to Figure 5, Further, in order to improve the stability of the connection between the connecting block and the inner wall of the ear clip, that is, to increase the friction between the connecting block and the inner wall of the ear clip, a serrated contact surface 421 is provided on the side of the connecting block 420 close to the connecting shaft 20. During operation, the connecting block effectively contacts the ear clip by means of the aforementioned serrated contact surface.

[0037] Refer to Figure 6 , Figure 7 , As a preferred technical solution of this embodiment, an inclined groove 210 is formed in the shaft wall at one end of the connecting shaft 20 placed inside the accommodating groove 310. Specifically, the inclined groove includes a straight groove surface 211, an inclined groove surface 212, and a groove bottom surface 213. The straight groove surface 211 is formed by extending from the outer wall of the connecting shaft 20 towards the axis of the connecting shaft. The inclined groove surface 212 is formed by extending from the outer wall of the connecting shaft towards the direction of the straight groove surface. The groove bottom surface 213 is provided between the straight groove surface and the inclined groove surface for connecting the straight groove surface and the inclined groove surface. In this way, the aforementioned straight groove surface 211, inclined groove surface 212, and groove bottom surface 213 can form a groove structure. When the ear clip needs to be fixed after the up and down adjustment is completed, the fastener enters the aforementioned groove structure from the bottom of the ear clip and contacts the inclined groove surface. Since the connecting shaft is fixed, the fastener will drive the connecting block and the ear clip to move along the axial direction of the connecting shaft, so that the connecting block together with the ear clip is locked at the shaft end of the connecting shaft, achieving the effect of locking and fixing the ear clip;

[0038] It should be noted that the inclined direction of the inclined groove surface 212 in this embodiment is set along the direction away from the connecting block. In this way, when the fastener contacts the inclined groove surface, it can move along the inclined surface of the inclined groove surface and drive the connecting block and the ear clip towards the shaft end of the connecting shaft.

[0039] Further, the fastener includes a fastening column that cooperates with the inclined groove surface to drive the ear clip 30 to move towards the shaft end of the connecting shaft 20. It should be noted that the top of the fastening column is provided with an inclined surface that cooperates with the inclined groove surface. When the fastening column contacts the inclined groove surface of the connecting shaft, it will indirectly drive the connecting block and the ear clip to act; of course, the fastener is not limited to the fastening column, and can also be other fixing parts such as bolts that have a fixing effect.

[0040] Refer to Figure 5 , Figure 6 , As a preferred technical solution of this embodiment, in order to improve the stability of the connection between the ear clip and the shaft end of the connecting shaft, the oral CT lateral head clip locking mechanism further includes a flat gasket 50. The flat gasket is arranged at the shaft end of the connecting shaft 20, and the flat gasket is attached to the outer side surface of the adjustment hole 410. At the same time, evenly distributed connecting ribs 411 are provided on the outer side surface of the adjustment hole 410 to increase the friction between the ear clip and the flat gasket, thereby improving the fixing stability of the ear clip.

[0041] Refer to Figure 8 , Figure 9, as a preferred technical solution of this embodiment, an installation block 60 is further provided inside the housing 10. A threaded rod 610 is provided inside the installation block, and the number of threaded rods is two. The ends of the two threaded rods can be threadedly connected to form a whole. The connecting shafts 20 are symmetrically arranged at the ends of the two butt-jointed threaded rods. And the end of the connecting shaft away from the threaded rod passes through the installation block and the housing and is connected to the ear clip. It should be noted that the connecting shaft of the present utility model can be arranged to be threadedly connected to the threaded rod. In this way, the distance between the two connecting shafts can be adjusted, so as to achieve the purpose of adjusting the distance between the two ear clips on both sides, so as to be suitable for different users.

[0042] As a preferred technical solution of this embodiment, a fixing portion 70 is provided on one side of the housing 10 away from the clamping portion of the ear clip 30. This fixing portion is used to connect the oral CT lateral head clip locking mechanism to the oral CT device.

[0043] The present utility model also provides an oral CT, including the aforementioned oral CT lateral head clip locking mechanism. This locking mechanism is provided on the oral CT device through the fixing portion. In this way, by using the characteristics that the ear clips on both sides of the locking mechanism can move up and down and be fixed, the adaptability of the oral CT is better, and at the same time, the symmetry of the lateral film obtained by shooting is improved.

[0044] The above-described embodiments are only descriptions of the preferred embodiments of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. An oral CT lateral head clamp locking mechanism, comprising a housing (10), a connecting shaft (20) disposed at two opposite sides of the housing, and an ear clamp (30) disposed at the end of the connecting shaft, characterized in that: Also includes: An adjustment component, the adjustment component comprising an adjustment hole (410) provided at a connection portion of the ear clip (30) and having a clearance fit with the connection shaft (20), and a connection block (420) accommodated in an inner cavity of the ear clip and fixedly connected to an end of the connection shaft; and A fastener is arranged at the bottom end of the ear clip and is used to lock the ear clip (30) to the end of the connecting shaft after the connecting shaft (20) is movably adjusted along the adjustment hole.

2. The oral CT lateral head clamp locking mechanism according to claim 1, characterized in that: The adjustment holes (410) are strip-shaped holes distributed along the vertical direction of the housing (10).

3. The oral CT lateral head clamp locking mechanism according to claim 1, characterized in that: The ear clip (30) is provided with a receiving groove (310) in communication with the adjustment hole (410), and one end of the connecting shaft (20) away from the housing (10) passes through the adjustment hole (410) and the receiving groove (310) and is key-connected to the connecting block (420).

4. The oral CT lateral head clamp locking mechanism according to claim 3, characterized in that: A serrated contact surface (421) is provided on one side of the connection block (420) close to the connection shaft (20).

5. The oral CT lateral head clamp locking mechanism according to claim 3, characterized in that: An oblique groove (210) is formed on the shaft wall of one end of the connecting shaft (20) placed inside the accommodating groove (310), the oblique groove comprising a straight groove surface (211) extending from the outer wall of the connecting shaft (20) toward the axis of the connecting shaft, an oblique groove surface (212) extending from the outer wall of the connecting shaft toward the straight groove surface, and a groove bottom surface (213) arranged between the straight groove surface and the oblique groove surface, wherein the oblique groove surface (212) is arranged in an inclination direction away from the connecting block.

6. The oral CT lateral head clamp locking mechanism according to claim 5, characterized in that: The fastener comprises a fastening column which cooperates with the inclined groove surface and is used to drive the ear clamp (30) to move toward the axial end of the connecting shaft (20).

7. The oral CT lateral head clamp locking mechanism according to claim 1, characterized in that: The oral CT lateral head clamp locking mechanism further comprises a flat washer (50) arranged at the end of the connecting shaft (20) and in contact with the outer side surface of the adjustment hole (410).

8. The oral CT lateral head clamp locking mechanism according to claim 7, characterized in that: The outer side surface of the adjustment hole (410) is provided with evenly distributed connecting ribs (411).

9. The oral CT lateral head clamp locking mechanism according to claim 1, characterized in that: A mounting block (60) is provided inside the housing (10), and threaded rods (610) connected to each other are provided inside the mounting block, and the connecting shaft (20) is symmetrically arranged at the ends of the two connected threaded rods.

10. The oral CT lateral head clamp locking mechanism according to claim 1, characterized in that: A fixing portion (70) is provided on a side of the housing (10) facing away from the clamping portion of the ear clip (30).

11. An oral CT, characterized in that: It comprises the oral CT lateral head clamp locking mechanism as described in any one of claims 1-10.

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