CN210931475U - Positioning mechanism for oral CBCT device and oral CBCT device - Google Patents

Abstract

The utility model discloses a positioning mechanism and oral cavity CBCT device for positioning mechanism of oral cavity CBCT device includes: a housing adapted to be rotatably coupled to a working arm of the oral CBCT apparatus and having an adjustment slide and an operator port; a positioning rule movably matched with the adjusting slide way and extending out of the shell through the operation opening, wherein one of the shell and the positioning rule is configured to be switchable between a fixed state and a moving state through elastic deformation of the positioning rule, the relative position of the positioning rule and the adjusting slide way is fixed in the fixed state, and the positioning rule is movable in the adjusting slide way in the moving state. According to the utility model discloses a positioning mechanism for oral cavity CBCT device not only can realize rotating, can also realize the free regulation of height to simple reliable can satisfy the side position and shoot patient's location requirement.

Description

Positioning mechanism for oral CBCT device and oral CBCT device

Technical Field

The utility model relates to an oral cavity CBCT device technical field particularly, relates to a positioning mechanism for oral cavity CBCT device and having an oral cavity CBCT device for the positioning mechanism of CBCT device.

Background

The oral CBCT devices of the related art are commonly used for CBCT lateral imaging. CBCT lateral position imaging is generally used for orthodontic operation, and in order to obtain high-quality imaging, when the patient takes one's place, need guarantee that lateral position ear clip is positioned in patient's ear hole, the forehead positioning rule is located the nasion department, utilizes the metal scale on the positioning rule to image and provides the size reference. Because the ear hole of each person has different height sizes relative to the nasal root, after the ear hole is positioned by the lateral ear clip, the forehead positioning ruler must move up and down to be positioned at the nasal root; meanwhile, in order to facilitate the patient to be in place, the forehead positioning ruler needs to be designed to be rotatable.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a positioning mechanism for oral cavity CBCT device, a positioning mechanism for oral cavity CBCT device not only can realize rotating, can also realize the ascending free regulation of its direction of height to simple and reliable can satisfy the side position and shoot patient's location requirement.

The utility model discloses still provide one kind and have an oral cavity CBCT device for CBCT device's positioning mechanism.

According to the utility model discloses a positioning mechanism for oral cavity CBCT device of first aspect embodiment includes: a housing adapted to be rotatably coupled to a working arm of the oral CBCT apparatus and having an adjustment slide and an operator port; a positioning rule movably matched with the adjusting slide way and extending out of the shell through the operation opening, wherein one of the shell and the positioning rule is configured to be switchable between a fixed state and a moving state through elastic deformation of the positioning rule, the relative position of the positioning rule and the adjusting slide way is fixed in the fixed state, and the positioning rule is movable in the adjusting slide way in the moving state.

According to the utility model discloses a positioning mechanism for oral cavity CBCT device, the elastic deformation through utilizing the locating rule self realizes the removal and the fixed of locating rule to not only can rotate, can also realize the free regulation of height, and simple structure is reliable, can satisfy the side position and shoot patient's location requirement.

In addition, the positioning mechanism for the oral cavity CBCT device according to the embodiment of the present invention has the following additional technical features:

according to some embodiments of the utility model, be equipped with a plurality of elasticity locating parts on the locating rule, it is a plurality of elasticity locating part interval sets up and inject the elastic groove jointly, the locating rule is in under the fixed state elasticity locating part with the relative position of casing is fixed, the locating rule is in it is a plurality of under the mobile state elasticity locating part orientation the inside in elastic groove is drawn close.

In some embodiments of the present invention, the elastic groove is an open groove and respectively penetrates through the upper end surface, the front side surface and the rear side surface of the positioning rule.

According to some embodiments of the invention, the positioning mechanism for the oral CBCT apparatus further comprises: the adjusting piece is used for pressing the elastic limiting piece to the inside of the elastic groove, the shell is provided with an adjusting opening communicated with the adjusting slide way, the elastic limiting piece is visible from the adjusting opening, and the adjusting piece is movably matched with the adjusting opening.

Further, the adjusting part is installed on the elastic limiting part.

In some embodiments of the present invention, a first positioning portion is disposed in the adjusting slide, a second positioning portion is disposed on the elastic positioning portion, and the positioning ruler is in the fixed state, in which the first positioning portion is matched with the second positioning portion.

In some embodiments of the present invention, the housing comprises: a front cover body; the rear cover body is connected with the front cover body and limits the adjusting slide way, the operation opening and the adjusting opening together.

According to some embodiments of the utility model, be equipped with the support limb on the location chi, the stiff end of support limb with the location chi links to each other and the free end towards keeping away from the direction perk of location chi, the location chi is in under the fixed state support the limb with the relative position of casing is fixed, the location chi is in under the mobile state the free end of support limb is portable.

In some embodiments of the present invention, the support limb is formed by bending and tilting a part of the positioning rule and forming a recess on the positioning rule.

In some embodiments of the present invention, the receding groove is a closed groove and is respectively communicated with the front side and the rear side of the positioning rule.

According to some embodiments of the utility model, be equipped with the support limb on the regulation slide, the stiff end of support limb with the casing links to each other and the free end orientation the location chi perk, the location chi is in under the stationary state with the relative position of support limb is fixed, the location chi is in relative under the mobile state support the limb portable.

According to some embodiments of the invention, the positioning mechanism for the oral CBCT apparatus further comprises: a connecting seat adapted to be connected with the working arm and rotatably connected with the housing.

In some embodiments of the present invention, the positioning mechanism for the oral CBCT apparatus further comprises: the rotating shaft is arranged in the shaft hole and rotatably matched with the rotating hole.

Furthermore, the shell is provided with a plurality of plungers distributed along the circumferential direction of the shaft hole at intervals, the connecting seat is provided with a plurality of positioning holes, and the plurality of plungers are suitable for being matched with the plurality of positioning holes in a one-to-one correspondence mode.

According to the utility model discloses oral cavity CBCT device of second aspect embodiment, include according to the utility model discloses an embodiment a positioning mechanism for oral cavity CBCT device.

According to the utility model discloses oral cavity CBCT device utilizes as above a positioning mechanism for oral cavity CBCT device, can realize the rotation of location chi, can also realize the free regulation of location chi on the direction of height to simple structure is reliable, can satisfy the side position and shoot patient's location requirement.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is an exploded view of a positioning mechanism for an oral CBCT apparatus according to a first embodiment of the present invention;

fig. 2 is a schematic structural view of a positioning mechanism for an oral CBCT apparatus according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a positioning mechanism for an oral CBCT apparatus according to a first embodiment of the present invention;

fig. 4 is a schematic structural view of a positioning rule according to a first embodiment of the present invention;

fig. 5 is a schematic structural view of a positioning rule according to a first embodiment of the present invention;

fig. 6 is a schematic structural view of a front cover body according to a first embodiment of the present invention;

fig. 7 is a schematic structural view of a front cover body according to a first embodiment of the present invention;

fig. 8 is a schematic structural view of a front cover body according to a first embodiment of the present invention;

fig. 9 is a schematic structural view of a rear cover body according to a first embodiment of the present invention;

fig. 10 is a schematic structural view of a rear cover body according to a first embodiment of the present invention;

fig. 11 is a schematic structural view of a rear cover body according to a first embodiment of the present invention;

fig. 12 is a schematic structural view of a connecting socket according to a first embodiment of the present invention;

fig. 13 is a schematic structural view of a connecting socket according to a first embodiment of the present invention;

fig. 14 is a schematic structural view of a connecting socket according to a first embodiment of the present invention;

fig. 15 is a sectional view of a connecting socket according to a first embodiment of the present invention;

fig. 16 is an exploded view of a positioning mechanism for an oral CBCT apparatus according to a second embodiment of the present invention;

fig. 17 is a schematic structural view of a positioning mechanism for an oral CBCT apparatus according to a second embodiment of the present invention;

fig. 18 is a schematic structural view of a positioning mechanism for an oral CBCT apparatus according to a second embodiment of the present invention;

fig. 19 is a schematic structural view of a positioning mechanism for an oral CBCT apparatus according to a second embodiment of the present invention;

fig. 20 is a schematic structural view of a positioning mechanism for an oral CBCT apparatus according to a second embodiment of the present invention;

fig. 21 is a schematic structural view of a positioning rule according to a second embodiment of the present invention;

fig. 22 is a schematic structural view of a positioning rule according to a second embodiment of the present invention;

fig. 23 is a schematic structural view of a positioning rule according to a second embodiment of the present invention;

fig. 24 is a schematic structural view of a housing according to a second embodiment of the present invention;

fig. 25 is a schematic structural view of a housing according to a second embodiment of the present invention;

fig. 26 is a schematic structural view of a housing according to a second embodiment of the present invention;

fig. 27 is a schematic structural view of an oral CBCT apparatus according to a second embodiment of the present invention.

Reference numerals:

an oral CBCT device 1, a positioning mechanism 10 for the oral CBCT device, a limiting plate 11, lateral ear clips 20,

A connecting seat 100, a rotating hole 101, a positioning hole 102,

The adjustable slide way comprises a shell 200, an adjustable slide way 201, an operation opening 202, an adjustable opening 203, a first positioning part 204, a shaft hole 205, a jackscrew hole 206, a plunger hole 207, a positioning column 208, a positioning groove 209, a front cover body 210, a circular boss 211, a rear cover body 220, an adapting groove 221, a plunger 230, a positioning rod, a positioning,

A positioning rule 300, an elastic limiting piece 301, an elastic groove 302, a supporting limb 303, a yielding groove 304, a second positioning part 305, a mounting groove 306, a guide surface 307, an adjusting piece 310, a scale 320, a,

A rotating shaft 400.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A positioning mechanism 10 for an oral CBCT apparatus according to an embodiment of the first aspect of the present invention is described below with reference to the accompanying drawings.

As shown in fig. 1-26, a positioning mechanism 10 for an oral CBCT apparatus according to an embodiment of the present invention includes: a housing 200 and a positioning rule 300.

Specifically, the housing 200 is adapted to be connected to a working arm of an oral CBCT apparatus. The housing 200 has an adjustment slide 201 and an operation opening 202. For example, the adjustment slide 201 may extend in the up-down direction, and the adjustment slide 201 communicates with the operation port 202.

The positioning rule 300 may be a plastic member. The positioning rule 300 is movably arranged in the adjusting slide 201, and the positioning rule 300 extends out of the shell 200 from the operation opening 202. The positioning rule 300 is provided with a mounting groove 306, and the mounting groove 306 is used for mounting a scale 320 (e.g. a metal scale). One of the housing 200 and the positioning rule 300 is configured to make the positioning rule 300 switchable between a fixed state and a moving state by elastic deformation of itself, the relative position of the positioning rule 300 and the adjustment slide 201 is fixed in the fixed state, and the positioning rule 300 is movable in the adjustment slide 201 in the moving state.

That is, the housing 200 is configured to be switchable between the fixed state and the moving state of the positioning rule 300 by its elastic deformation, or the positioning rule 300 is configured to be switchable between the fixed state and the moving state of the positioning rule 300 by its elastic deformation, so that the height adjustment of the positioning rule 300 can be achieved without providing an additional adjustment mechanism. For example, the state of the positioning rule 300 can be switched by elastically deforming the positioning rule 300 by one-handed operation, and the height adjustment and the elastic deformation of the positioning rule 300 can be unified.

Therefore, according to the utility model discloses a positioning mechanism 10 for oral cavity CBCT device, except can realizing rotatoryly, realize the removal and the fixed of spacer 300 through the elastic deformation who utilizes spacer 300 or casing 200 self, can also realize the free regulation of height to simple structure is reliable, convenient operation, can satisfy the side position and shoot patient's location requirement.

According to some embodiments of the present invention, as shown in fig. 1 and fig. 2, a plurality of elastic position-limiting members 301 are disposed on the positioning rule 300, the elastic position-limiting members 301 are disposed at intervals, and the elastic grooves 302 are defined by the elastic position-limiting members 301 together. For example, the spring slot 302 may be in the form of a planar slot or a cross slot. In a fixed state, the position of the elastic limiting member 301 relative to the housing 200 is fixed, that is, the elastic limiting member 301 abuts against the housing 200, and the positioning rule 300 is fixed on the housing 200 through the elastic limiting member 301. In the moving state of the positioning rule 300, the free ends of the elastic stoppers 301 are close to each other toward the inside of the elastic groove 302, so that the elastic stoppers 301 can be separated from the housing 200 to allow the positioning rule 300 to move.

Thus, the positioning rule 300 can be switched between the fixed state and the movable state by elastic deformation of the free end of the elastic stopper 301. Thus, the positioning function of the positioning mechanism 10 for the oral CBCT apparatus is realized by using one positioning ruler 300, and the positioning mechanism has a simpler structure and is easy to control and operate.

In some embodiments of the present invention, as shown in fig. 4 and 5, the elastic groove 302 may be an open groove, and the elastic groove 302 penetrates the upper end surface, the front side surface, and the rear side surface of the positioning rule 300, respectively. That is, the lower end surfaces of the elastic stoppers 301 are fixed to the positioning rule 300, and the elastic stoppers 301 are disposed at intervals on the peripheral side of the elastic groove 302, for example, two elastic stoppers 301 are disposed at intervals in the left-right direction, and at this time, the elastic stoppers 301 extend upward from the lower end surfaces of the elastic stoppers 301 to the free ends thereof. Thus, the elastic stopper 301 can be elastically deformed.

It can be understood that, in a fixed state, the positioning rule 300 may be formed by abutting outer side surfaces of the elastic limiting members 301 against an inner wall of the adjusting slide 201; moreover, by moving the elastic stoppers 301 toward each other, the outer side surfaces of the elastic stoppers 301 can be separated from the inner wall of the adjusting slide 201, so that the positioning rule 300 is switched to a moving state, and the height of the positioning rule 300 can be adjusted. The outer side surface of the elastic limiting member 301 refers to a side wall surface of the elastic limiting member 301 facing away from the elastic groove 302.

In some embodiments of the present invention, as shown in fig. 1 and 2, the positioning mechanism 10 for the oral CBCT apparatus further comprises: an adjusting member 310. The adjusting member 310 is used to press the elastic limiting member 301 toward the inside of the elastic groove 302. The shell 200 is provided with an adjusting opening 203 communicated with the adjusting slide way 201, the elastic limiting piece 301 is visible from the adjusting opening 203, and the adjusting piece 310 is movably matched with the adjusting opening 203. That is, the adjusting member 310 may be fitted in the adjusting opening 203 to elastically deform the elastic limiting member 301, for example, the adjusting member 310 may extend into the adjusting slideway 201 through the adjusting opening 203, or a part of the elastic limiting member 301 may extend out of the adjusting opening 203 to form the adjusting member 310. Thus, one-handed operation can be realized when the height of the positioning rule 300 is adjusted, and the use by a user is facilitated.

For example, the left and right sides of the housing 200 are respectively provided with the adjusting openings 203, and the adjusting members 310 may be coupled in pairs in the corresponding adjusting openings 203. When no clamping force is applied to the adjusting piece 310, the free end of the elastic limiting piece 301 is supported on the inner wall of the adjusting slide way 201, the positioning rule 300 is suspended in the adjusting slide way 201, and the positioning rule 300 is in a fixed state; when a clamping force is applied to the adjusting member 310, the elastic limiting member 301 is pressed toward the inside of the elastic groove 301 by the adjusting member 310, and the positioning rule 300 is in a movable state.

Wherein, through adjusting the clearance between the adjusting part 310 and the left and right sides face of the housing 200, can guarantee that when clamping, the positioning rule 300 will not be deformed and damaged because the excessive force exceeds the elastic deformation limit.

Further, as shown in fig. 1 and 2, the adjusting member 310 is mounted on the elastic limiting member 301. Like this, the structure is more stable firm, and the structure is compacter, appears rocking or cooperates unstable condition when avoiding centre gripping regulating part 310, also more convenient operation.

In some embodiments of the present invention, as shown in fig. 1, a first positioning portion 204 is disposed in the adjusting slide 201, and a second positioning portion 305 is disposed on the elastic limiting member 301. The positioning rule 300 is engaged with the first positioning portion 204 and the second positioning portion 305 in a fixed state. For example, one of the first positioning portion 204 and the second positioning portion 305 may be a protrusion, or the first positioning portion 204 and the second positioning portion 305 may be matched in shape, and one of the first positioning portion 204 and the second positioning portion 305 is a protrusion and the other is a groove matched with the protrusion, so that the matching is relatively firm; the positioning rule 300 separates the first positioning portion 204 and the second positioning portion 305 from each other in the moving state. Thus, the positioning rule 300 can be more stable in the fixed state, and the reliability and stability of the structure are further improved.

In some embodiments of the present invention, as shown in fig. 1, the housing 200 includes: a front cover 210 and a rear cover 220. The rear cover body 220 is connected to the front cover body 210 and defines the adjustment slide 201, the operation opening 202, and the adjustment opening 203. One of the front cover 210 and the rear cover 220 is provided with a positioning column 208, the other of the front cover 210 and the rear cover 220 is provided with a positioning groove 209, and the positioning column 208 is matched in the corresponding positioning groove 209. In this way, the installation of the adjusting member 310 is facilitated, and the positioning rule 300 is facilitated to smoothly enter the adjusting slide 201.

In some embodiments of the present invention, the front cover 210 and the rear cover 220 are respectively provided with an adapting groove 221, and the adjusting slide 201 is formed by the adapting groove 221 on the front cover 210 and the adapting groove 221 on the rear cover 220; in other embodiments of the present invention, as shown in fig. 1, an adapting groove 221 is formed on one of the front cover body 210 and the rear cover body 220, and the adjusting slide 201 is defined by the adapting groove 221 on the one of the front cover body 210 and the rear cover body 220 and the other one of the front cover body 210 and the rear cover body 220.

According to some embodiments of the present invention, as shown in fig. 21-23, the positioning rule 300 is provided with a supporting limb 303, the fixed end of the supporting limb 303 is connected to the positioning rule 300, and the free end of the supporting limb 303 tilts towards the direction away from the positioning rule 300. In this way, positioning of the positioning rule 300 may be achieved by abutment between the free end of the support limb 303 and the inner wall of the adjustment ramp 201. The position ruler 300 supports the limb 303 in a fixed state and is fixed relative to the housing 200, and the position ruler 300 supports the free end of the limb 303 in a movable state and can move. Wherein the free end of the supporting limb 303 may be provided with a guiding surface 307, for example, the supporting limb 303 extends from bottom to top and inclines backwards, and the guiding surface 307 extends from bottom to top and inclines forwards, so as to facilitate the supporting limb 303 to smoothly pass through the operation opening 202 and enter the adjustment chute 201.

In some embodiments of the present invention, as shown in fig. 17, the positioning ruler 300 fixes the relative position of the supporting limb 303 and the housing 200 by the friction between the supporting limb 303 and the inner wall of the adjusting slide 201 in the fixed state. That is, the supporting limbs 303 are elastically deformed by the pressing action of the inner wall of the adjusting chute 201, so that a frictional force is generated between the supporting limbs 303 and the inner wall of the adjusting chute 201, and thus the positioning rule 300 can be maintained in a fixed state by the frictional force.

In some embodiments of the present invention, as shown in fig. 23, the supporting limb 303 is formed by bending and tilting a portion of the positioning rule 300, and the supporting limb 303 forms a yielding groove 304 on the positioning rule 300. Thus, when the positioning rule 300 is assembled in place, the supporting limbs 303 are elastically deformed, the free ends of the supporting limbs 303 are close to the inside of the abdicating groove 304, and the positioning rule 300 is directly pulled when the height needs to be adjusted.

Further, as shown in fig. 21 to 23, the receding groove 304 may be a closed groove, and the receding groove 304 penetrates the front side and the rear side of the positioning rule 300, respectively. For example, the support limb 303 may be configured as a cantilever, a lower end surface of the cantilever is fixed on the lower end surface of the elastic groove 302, the cantilever extends upwards from the lower end surface of the support limb 303 to form a free end, and the free end of the cantilever tilts away from the positioning ruler 300. Thus, not only the structural condition that the supporting limbs 303 are elastically deformed can be satisfied, but also the structures of the supporting limbs 303 and the elastic grooves 302 can be more flexible and diversified.

It will be appreciated that the thickness of the entire set rule 300 including the cantilever may be greater than the distance between the front and rear inner walls of the adjustment slide 201, thereby ensuring that the set rule 300 is securely positioned within the adjustment slide 201.

According to some embodiments of the utility model, be equipped with support limb 303 on adjusting slide 201, the stiff end of support limb 303 links to each other with casing 200, supports limb 303 free end towards positioning ruler 300 perk, and positioning ruler 300 is fixed with the relative position of support limb 303 under the stationary state, and positioning ruler 300 is portable relative support limb 303 under the mobile state. For example, a support limb 303 is provided on the inner wall of the housing 200, and the support limb 303 may be configured as a cantilever. In this way, the height adjustment of the positioning rule 300 can be achieved by utilizing the elastic deformation of the housing 200 itself.

According to some embodiments of the present invention, as shown in fig. 1, the positioning mechanism 10 for the oral CBCT apparatus further comprises: a connecting socket 100. The attachment socket 100 is adapted to be connected to a working arm of an oral CBCT apparatus. For example, the attachment base 100 may be a separate piece, the attachment base 100 being adapted for mating attachment to the work arm; for another example, the connecting section 100 may be a part from which the working arm extends. The housing 200 is rotatably coupled to the connector holder 100. In this way, a rotation function can be realized by the link socket 100.

In some embodiments of the present invention, as shown in fig. 1, the positioning mechanism 10 for the oral CBCT apparatus further comprises: a rotating shaft 400.

Specifically, the front end surface of the housing 200 is provided with a shaft hole 205, the connecting base 100 is provided with a rotating hole 101 penetrating through the front end surface and the rear end surface thereof, the rotating shaft 400 passes through the rotating hole 101 and is installed in the shaft hole 205, and the rotating shaft 400 is rotatably engaged with the rotating hole 101. The upper end surface of the housing 200 is further provided with a jack screw hole 206, and a jack screw is fitted in the jack screw hole 206, and the jack screw fixes the axial direction and the circumferential direction of the rotating shaft 400, i.e., the jack screw restricts the movement of the rotating shaft 400 in the axial direction and the circumferential direction. In this way, the rotation function of the positioning rule 300 can be realized. For example, the rotation shaft 400 may be a pin.

Further, as shown in fig. 1, a plurality of plungers 230 are disposed on the housing 200 and spaced apart from each other along the circumferential direction of the shaft hole 205, a plurality of positioning holes 102 are disposed on the connecting seat 100, and the plurality of plungers 230 are adapted to be matched with the plurality of positioning holes 102 in a one-to-one correspondence manner. For example, the plunger 230 may be a ball plunger elastically pressed against the rear end surface of the connecting base 100, and the ball plunger may be engaged with the positioning hole 102 for positioning every rotation of a certain angle (e.g., 90 °). Thus, the positioning can be performed during rotation, and the positioning rule 300 is prevented from hanging down due to gravity during rotation.

The positioning mechanism 10 for an oral CBCT apparatus according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Example 1:

as shown in fig. 1 to 15, the positioning mechanism 10 for the oral CBCT apparatus of the present embodiment includes: the positioning ruler 300, the metal ruler embedded therein, the front cover 210, the rear cover 220, the plunger 230, the connecting seat 100 and the rotating shaft 400. The left and right side walls of the front cover 210 and the left and right side walls of the rear cover 220 extend inward to form a limiting plate 11, and the limiting plate 11 is provided with a toothed first positioning portion 204. The upper part of the front side of the front cover body 210 is provided with a hollow circular boss 211, four plunger holes 207 are uniformly distributed on the circular boss 211, the plungers 230 are arranged in the corresponding plunger holes 207, and at least two or four plungers 230 are symmetrically arranged.

As shown in fig. 7, four positioning holes 102 are uniformly arranged on the rear end surface of the connecting socket 100. The upper end surface of the circular boss 211 of the front cover 210 is provided with a jack screw hole 206, and the jack screw fixes the axial direction and the circumferential direction of the rotating shaft 400. The plunger 230 may be a ball plunger elastically pressed against the rear end surface of the connecting socket 100, and the ball plunger may be engaged with the positioning hole 102 for positioning every rotation by a certain angle (e.g., 90 °). The upper end of the connecting socket 100 is screwed to the operating arm so that the housing 200 formed by the front cover 210 and the rear cover 220 can rotate about the rotation shaft 400 and be positioned by the plunger 230.

The upper end of the positioning rule 300 is provided with an elastic groove 302, and the elastic groove 302 respectively penetrates through the upper end face, the front side face and the rear side face of the positioning rule 300. As shown in fig. 8, the adjusting member 310 may be a lug, and the lug is respectively mounted on the left side surface of the left elastic limiting member 301 and the right side surface of the right elastic limiting member 301 for being clamped by a finger. When clamping both side lugs, the elastic stoppers 301 may be deformed toward the middle. A limiting plate 11 extending leftwards is arranged on the left side surface of the left elastic limiting member 301, a limiting plate 11 extending rightwards is arranged on the right side surface of the right elastic limiting member 301, a toothed second positioning portion 305 is arranged on the limiting plate 11, and the distance between the fine teeth on the left and right elastic limiting members 301 is slightly larger than the distance between the fine teeth on the front cover body 210 and the rear cover body 220.

When assembled, the elastic retainer 301 pre-presses its serrations to engage with the serrations of the front cover 210 and the rear cover 220, thereby locking the housing 200, at which time the lugs protrude from the adjustment openings 203 of the housing 200, as shown in fig. 3. Under the action of no clamping force, the serration of the elastic limiting member 301 is elastically pressed and matched with the serration of the housing 200, and the positioning rule 300 can be suspended at any height. When the height needs to be adjusted, the clamping lugs enable the elastic limiting piece 301 to deform inwards, the fine teeth are meshed and disengaged to realize free vertical movement, and when the fine teeth are loosened, the elastic limiting piece 301 restores to the shape, and fine teeth are meshed and suspended. By controlling the clearance between the lug and the left and right sides of the housing 200, it is possible to ensure that the positioning rule 300 is not deformed or damaged due to excessive force exceeding the elastic deformation limit during clamping.

According to the utility model discloses a positioning mechanism for oral cavity CBCT device, the elastic deformation through utilizing the locating rule self realizes the removal and the fixed of locating rule to not only can rotate, can also realize the free regulation of height, and simple structure is reliable, can satisfy the side position and shoot patient's location requirement.

Example 2:

as shown in fig. 12 to 26, the positioning mechanism 10 for the oral CBCT apparatus of the present embodiment includes: the positioning rule 300, the metal scale embedded therein, the housing 200, the plunger 230, the connecting seat 100 and the rotating shaft 400.

As shown in fig. 11, the adjustment slide 201 is a hollow rectangular groove. As shown in fig. 13, the positioning rule 300 is provided with a mounting groove 306 matched with the metal scale, and the lower end of the positioning rule 300 is tilted so as to be conveniently contacted with the nasion. The positioning rule 300 is provided with a closed abdicating groove 304, and the abdicating groove 304 respectively penetrates through the front side and the rear side of the positioning rule 300. The supporting limb 303 of the positioning rule 300 is a cantilever structure with a tilted upper end, the lower end surface of the cantilever is connected with the bottom wall of the abdicating groove 304, the upper end of the cantilever is tilted backwards, and the upper end of the cantilever is provided with a guide surface 307. The thickness of the positioning rule 300 itself is smaller than the width of the adjustment slide 201 in the front-rear direction, but the thickness of the whole is larger than the width of the adjustment slide 201 in the front-rear direction when it includes the cantilever.

During assembly, because the guide surface 307 is located behind the rear surface of the positioning rule 300, the upper end of the positioning rule 300 can be easily inserted into the adjusting slide 201 through the operation opening 202, and the positioning rule 300 is clamped in the adjusting slide 201 by elastic deformation of the cantilever along with the fact that the cantilever extends into the adjusting channel, so that hovering at any height is realized. During design, the friction force formed by the elastic support can be adjusted by adjusting the thickness and the interference amount of the cantilever, so that the damping effect is ensured. Other structures of the positioning mechanism 10 for the oral CBCT apparatus of the present embodiment are similar to those of embodiment 1, and will not be described in detail here.

According to the utility model discloses a positioning mechanism for oral cavity CBCT device, the elastic deformation through utilizing the locating rule self realizes the removal and the fixed of locating rule to not only can rotate, can also realize the free regulation of height, and simple structure is reliable, can satisfy the side position and shoot patient's location requirement.

An oral CBCT apparatus 1 having the positioning mechanism 10 for an oral CBCT apparatus according to the second aspect of the present invention will be described with reference to the drawings.

The oral cavity CBCT apparatus 1 according to the embodiment of the present invention, as shown in fig. 27, includes the positioning mechanism 10 and the lateral ear clip 20 for the oral cavity CBCT apparatus according to the embodiment of the first aspect of the present invention. The lateral ear clip 20 is for positioning within an ear canal of a patient.

According to the utility model discloses oral cavity CBCT device 1 utilizes as above a positioning mechanism 10 for oral cavity CBCT device, not only can realize the rotation of location chi 300, can also realize the free regulation of location chi 300 height to simple structure is reliable, can satisfy the side position and shoot patient's location requirement.

Other configurations and operations of the oral CBCT apparatus 1 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, "first feature" and "second feature" may include one or more of the features, and the first feature may be "on" or "under" the second feature, and may include the first and second features being in direct contact, or the first and second features being in contact not directly but via another feature therebetween. The first feature being "on," "over" and "above" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

It is to be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "a specific embodiment," "an example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (15)

1. A positioning mechanism for an oral CBCT apparatus, comprising:

a housing adapted to be rotatably coupled to a working arm of the oral CBCT apparatus and having an adjustment slide and an operator port;

a positioning rule movably matched with the adjusting slide way and extending out of the shell through the operation opening, wherein one of the shell and the positioning rule is configured to be switchable between a fixed state and a moving state through elastic deformation of the positioning rule, the relative position of the positioning rule and the adjusting slide way is fixed in the fixed state, and the positioning rule is movable in the adjusting slide way in the moving state.

2. The positioning mechanism for the oral CBCT apparatus as claimed in claim 1, wherein the positioning ruler is provided with a plurality of elastic limiting members, the elastic limiting members are spaced apart from each other and together define an elastic slot, the positioning ruler is fixed in the relative position between the elastic limiting members and the housing in the fixed state, and the positioning ruler is moved closer to the inside of the elastic slot in the moving state.

3. The positioning mechanism for the oral CBCT apparatus as recited in claim 2, wherein the elastic slot is an open slot and passes through the upper end surface, the front side surface and the rear side surface of the positioning ruler, respectively.

4. The positioning mechanism for an oral CBCT apparatus of claim 2, further comprising:

the adjusting piece is used for pressing the elastic limiting piece to the inside of the elastic groove, the shell is provided with an adjusting opening communicated with the adjusting slide way, the elastic limiting piece is visible from the adjusting opening, and the adjusting piece is movably matched with the adjusting opening.

5. The positioning mechanism for an oral CBCT apparatus as recited in claim 4, wherein the adjustment member is mounted on the resilient stop.

6. The positioning mechanism for the oral CBCT apparatus as recited in claim 4, wherein a first positioning portion is disposed in the adjusting slide, a second positioning portion is disposed on the elastic limiting member, and the positioning ruler is engaged with the first positioning portion and the second positioning portion in the fixed state.

7. The positioning mechanism for an oral CBCT apparatus of claim 4, wherein said housing comprises:

a front cover body;

the rear cover body is connected with the front cover body and limits the adjusting slide way, the operation opening and the adjusting opening together.

8. The positioning mechanism for the oral CBCT apparatus as claimed in claim 1, wherein the positioning ruler is provided with a supporting limb, a fixed end of the supporting limb is connected to the positioning ruler, and a free end of the supporting limb tilts towards a direction away from the positioning ruler, the positioning ruler is fixed in the relative position between the supporting limb and the housing in the fixed state, and the positioning ruler is movable in the free end of the supporting limb in the movable state.

9. The positioning mechanism for the oral CBCT apparatus of claim 8, wherein the supporting limb is formed by bending and tilting a part of the positioning rule and forming an abdicating groove on the positioning rule.

10. The positioning mechanism for the oral CBCT apparatus of claim 9, wherein the abdicating groove is a closed groove and respectively penetrates through the front side and the back side of the positioning ruler.

11. The positioning mechanism for the oral CBCT apparatus as claimed in claim 1, wherein the adjustment slide is provided with a supporting limb, a fixed end of the supporting limb is connected to the housing, a free end of the supporting limb tilts towards the positioning ruler, the positioning ruler is fixed to a relative position of the supporting limb in the fixed state, and the positioning ruler is movable relative to the supporting limb in the moving state.

12. The positioning mechanism for an oral CBCT apparatus according to any of claims 1 to 11, further comprising:

a connecting seat adapted to be connected with the working arm and rotatably connected with the housing.

13. The positioning mechanism for an oral CBCT apparatus of claim 12, further comprising:

the rotating shaft is arranged in the shaft hole and rotatably matched with the rotating hole.

14. The positioning mechanism for the oral CBCT apparatus of claim 13, wherein the housing has a plurality of plungers spaced apart from each other along the circumference of the shaft hole, the connecting seat has a plurality of positioning holes, and the plurality of plungers are adapted to be engaged with the plurality of positioning holes in a one-to-one correspondence.

15. An oral CBCT apparatus, comprising a positioning mechanism for an oral CBCT apparatus according to any of claims 1 to 14.

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