CN108478231B - Guiding structure for oral cavity CBCT device and oral cavity CBCT device - Google Patents
Guiding structure for oral cavity CBCT device and oral cavity CBCT device Download PDFInfo
- Publication number
- CN108478231B CN108478231B CN201810421889.9A CN201810421889A CN108478231B CN 108478231 B CN108478231 B CN 108478231B CN 201810421889 A CN201810421889 A CN 201810421889A CN 108478231 B CN108478231 B CN 108478231B
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- adjusting
- guide structure
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- 238000007408 cone-beam computed tomography Methods 0.000 title claims abstract 21
- 210000000214 mouth Anatomy 0.000 title abstract description 23
- 238000005096 rolling process Methods 0.000 claims abstract description 264
- 230000004308 accommodation Effects 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000002591 computed tomography Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- A61B6/51—
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/032—Transmission computed tomography [CT]
- A61B6/035—Mechanical aspects of CT
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/40—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/4064—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis specially adapted for producing a particular type of beam
- A61B6/4085—Cone-beams
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/58—Testing, adjusting or calibrating apparatus or devices for radiation diagnosis
Abstract
The invention discloses a guiding structure for an oral cavity CBCT device and the oral cavity CBCT device, the guiding structure for the oral cavity CBCT device comprises: the guide seat is provided with a mounting part and a guide part which are connected; at least one rolling component, the rolling component install in the direction portion and have the rolling surface, the rolling surface is equipped with the rolling body that can roll, the rolling component is constructed through the rolling body with the height-adjusting post roll of oral cavity CBCT device links to each other in order to guide the height-adjusting post reciprocates. The guiding structure for the oral cavity CBCT device has the guiding function, and has the advantages of low assembly precision requirement, high error tolerance, small rolling resistance, low cost and long service life.
Description
Technical Field
The invention relates to the technical field of oral cavity CBCT devices, in particular to a guiding structure for an oral cavity CBCT device and the oral cavity CBCT device with the guiding structure for the oral cavity CBCT device.
Background
Three-in-one (i.e., CT (Computed Tomography, computed tomography), panoramic and lateral) oral CBCT (Cone beam Computer Tomography, cone beam projection computed tomography) devices in the related art, the height adjustment column slides up and down with the main rotating arm and lateral arm to adjust the height, thereby accommodating different patient heights.
The cantilever arms of the main rotating arm and the lateral arm are long and heavy, and the height adjusting column is subjected to forward tilting and rolling moments in corresponding directions, so that the stability of the height adjusting column when moving up and down is affected. The current guiding mode is a linear guide rail or a sliding block, and the linear guide rail is a guide mechanism commonly used in the industrial field, but has higher price and high installation precision requirement; the cost of the sliding block is lower, but the assembly needs to be adjusted, the sliding friction force is larger, the sliding block can be worn after long-time use, and the service life is shorter.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the guiding structure for the oral cavity CBCT device, which has the advantages of guiding function, low assembly precision requirement, high error tolerance, small rolling resistance, low cost and long service life.
The invention also provides an oral cavity CBCT device with the guiding structure for the oral cavity CBCT device.
A guide structure for an oral CBCT apparatus according to an embodiment of a first aspect of the present invention includes: the guide seat is provided with a mounting part and a guide part which are connected; at least one rolling component, the rolling component install in the direction portion and have the rolling surface, the rolling surface is equipped with the rolling body that can roll, the rolling component is constructed through the rolling body with the height-adjusting post roll of oral cavity CBCT device links to each other in order to guide the height-adjusting post reciprocates.
The guiding structure for the oral cavity CBCT device has the guiding function, and is low in assembly precision requirement, high in error tolerance, small in rolling resistance, low in cost and long in service life.
In addition, the guide structure for the oral CBCT apparatus according to the embodiment of the present invention has the following additional technical features:
according to some embodiments of the invention, the rolling surface is provided with a receiving groove, and the rolling body is rollably arranged in the receiving groove and partially protrudes from the rolling surface.
Further, the rolling bodies and the accommodating grooves are respectively multiple, and the rolling bodies are matched with the accommodating grooves in a one-to-one correspondence mode.
Optionally, the rolling surface is a plurality of rolling surfaces which are parallel and/or perpendicular to each other, each rolling surface is provided with the accommodating groove, and the rolling bodies are a plurality of rolling bodies and are in one-to-one correspondence with the accommodating grooves.
Optionally, the rolling surface comprises a first rolling surface and a second rolling surface which are vertical and connected, the first rolling surface is provided with a first adapting groove and the second rolling surface is provided with a second adapting groove, and the accommodating groove is jointly defined by the first adapting groove and the second adapting groove.
Advantageously, the rolling bodies are spheres, and the cross-sectional shape of one of the first and second mating grooves is a major arc.
According to some embodiments of the invention, the rolling assembly comprises: the first rolling seat is arranged on the guide part; the second rolling seat is arranged on the guide part and connected with the first rolling seat, and at least one of the first rolling seat and the second rolling seat is provided with the rolling surface.
Further, the rolling assembly further comprises: the elastic adjusting piece, the guide part, the first rolling seat and the second rolling seat jointly limit an adjusting cavity, and the elastic adjusting piece is arranged in the adjusting cavity and is stopped against at least one of the first rolling seat and the second rolling seat.
Advantageously, said at least one of said first rolling seat and said second rolling seat has a guiding ramp, said elastic adjustment member having an adjustment ramp cooperating with said guiding ramp.
Still further, the elastic regulating member includes: the mounting plate is mounted on the guide part; the adjusting plate is connected with the mounting plate, an included angle between the adjusting plate and the mounting plate is an acute angle, and the adjusting inclined plane is arranged on the adjusting plate.
According to some embodiments of the invention, the rolling surface is provided with a cage for preventing the rolling elements from coming out and allowing portions of the rolling elements to protrude outwards.
An oral CBCT device according to an embodiment of the second aspect of the present invention includes: a column; according to the guiding structure for the oral CBCT device of the first aspect of the present invention, the mounting portion is fixed to the upright; the height adjusting column is provided with a moving groove extending along the up-down direction, the rolling component is matched in the moving groove, and the rolling body can roll along the side wall of the moving groove.
According to the oral cavity CBCT device provided by the embodiment of the invention, the guide structure for the oral cavity CBCT device is good in guide performance, low in assembly precision requirement, high in error tolerance, small in rolling resistance, low in cost and long in service life.
According to some embodiments of the invention, the two moving grooves are respectively positioned at the left side and the right side of the height adjusting column, the two guiding structures are respectively arranged at the left side and the right side of the upright column, and the two guiding structures are respectively in one-to-one correspondence with the two moving grooves.
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 a perspective view of a guide structure for an oral CBCT apparatus according to an embodiment of the present invention;
FIG. 2 is an exploded view of a guide structure for an oral CBCT apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a guide structure for an oral CBCT apparatus according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A in FIG. 3;
fig. 5 is a perspective view of a guide shoe for a guide structure of an oral CBCT apparatus according to an embodiment of the present invention;
FIG. 6 is an exploded view of a rolling assembly for a guide structure of an oral CBCT device according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of a rolling assembly for a guide structure of an oral CBCT apparatus according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a rolling assembly for a guide structure of an oral CBCT apparatus according to an embodiment of the present invention;
FIG. 9 is a cross-sectional view taken along line B-B in FIG. 8;
FIG. 10 is a schematic view of a first rolling seat and a second rolling seat of a guide structure for an oral CBCT apparatus according to an embodiment of the invention;
FIG. 11 is a schematic diagram of the structure of an oral CBCT apparatus according to an embodiment of the present invention;
fig. 12 is a schematic structural view of a column and a height adjusting column of an oral CBCT apparatus according to an embodiment of the present invention.
Reference numerals:
the CBCT apparatus 1 for the oral cavity,
a guide structure 10 for an oral CBCT apparatus,
guide holder 100, mounting portion 110, mounting hole 111, guide portion 120, positioning boss 121, pre-pressing hole 122,
rolling element 200, rolling surface 201, rolling element 202, accommodation groove 203, first rolling surface 204, second rolling surface 205, first fitting groove 206, second fitting groove 207, adjusting chamber 208, guide slope 209, first rolling seat 210, positioning column 211, second rolling seat 220, positioning hole 221, elastic adjusting member 230, adjusting slope 231, mounting plate 232, adjusting plate 233, elastic groove 234, holder 240,
the column 20, the height adjusting column 30, and the moving groove 31.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
A guide structure 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 to 12, a guide structure 10 for an oral CBCT apparatus according to an embodiment of the present invention includes: a guide shoe 100 and at least one rolling assembly 200.
Specifically, the guide holder 100 extends in the up-down direction, and the guide holder 100 has a mounting portion 110 and a guide portion 120 connected to each other. The upright post of the oral cavity CBCT device is placed in the up-down direction, and the guide holder 100 is mounted on the upright post of the oral cavity CBCT device through the mounting portion 110. The rolling assembly 200 is mounted to the guide 120, the rolling assembly 200 having a rolling surface 201, the rolling surface 201 being provided with rolling elements 202 capable of rolling, the rolling assembly 200 being configured to be in rolling connection with a height adjustment column of the oral CBCT apparatus via the rolling elements 202 to guide the height adjustment column to move up and down.
In this way, the height-adjusting column is in rolling contact with the rolling assembly 200, so that the mounting accuracy can be reduced and the flexibility can be improved while the height-adjusting column is limited (for example, limited in the left-right direction and the front-rear direction), and the friction coefficient is small and the service life is long due to the rolling friction between the height-adjusting column and the rolling assembly 200.
In short, the guide structure 10 for the oral CBCT apparatus according to the embodiment of the present invention has not only a guide function, but also low assembly accuracy requirements, large error tolerance, small rolling resistance, low cost, and long life.
According to some embodiments of the present invention, as shown in fig. 1, 2 and 6, the rolling surface 201 is provided with a receiving groove 203, the rolling body 202 is rollably provided in the receiving groove 203, and a portion of the rolling body 202 protrudes from the rolling surface 201 to be in contact with the height adjustment post. In this way, the rolling between the height adjustment column and the rolling assembly 200 is smoother and smoother, and the assembly of the rolling elements 202 is more secure.
Further, as shown in fig. 1-3, 6, 8 and 10, the number of the rolling elements 202 and the number of the accommodating grooves 203 are plural, and the plurality of rolling elements 202 are matched with the plurality of accommodating grooves 203 in a one-to-one correspondence manner, i.e. one rolling element 202 is arranged in each accommodating groove 203, so that the guiding is smoother, the error tolerance is improved, and the rolling resistance is reduced.
It is understood that the plurality of receiving grooves 203 may be provided at intervals in the up-down direction (i.e., the moving direction of the height adjusting column) so that the guide stroke is long. Of course, the plurality of receiving grooves 203 may be arranged in a plurality of rows, which is not particularly limited in the present invention.
In some embodiments of the present invention, the rolling surfaces 201 are plural, and each rolling surface 201 is provided with a receiving groove 203, and the rolling bodies 202 are plural, and the plural rolling bodies 202 are in one-to-one correspondence with the plural receiving grooves 203. Here, "the rolling surfaces 201 are plural which are disposed parallel and/or perpendicular to each other" may be understood as meaning that the rolling surfaces 201 are disposed parallel to each other, or the rolling surfaces 201 are disposed perpendicular to each other, or the rolling surfaces 201 include the rolling surfaces 201 parallel to each other and the rolling surfaces 201 perpendicular to each other.
For example, after the guide structure 10 is mounted on the upright, the rolling surfaces 201 are perpendicular to the left-right direction or the rolling surfaces 201 are perpendicular to the front-rear direction; for another example, after the guide structure 10 is mounted on the upright, one part of the rolling surfaces 201 is perpendicular to the left-right direction and the other part is perpendicular to the front-rear direction.
Thus, when the rolling surface 201 is perpendicular to the left-right direction, the height adjustment column can be limited in the left-right direction; when the rolling surface 201 is perpendicular to the front-rear direction, the height adjustment column may be limited in the front-rear direction; when there is both the rolling surface 201 perpendicular to the left-right direction and the rolling surface 201 perpendicular to the front-rear direction, the height adjustment column can be limited in the left-right direction and the front-rear direction, respectively.
Alternatively, as shown in fig. 1, 2, 4, 6, 7, 9, and 11, the rolling surface 201 includes a first rolling surface 204 and a second rolling surface 205 that are perpendicular and connected, wherein the first rolling surface 204 is perpendicular to the front-rear direction and the second rolling surface 205 is perpendicular to the left-right direction. The first rolling surface 204 is provided with a first adaptation groove 206 and the second rolling surface 205 is provided with a second adaptation groove 207, the accommodation groove 203 being jointly defined by the first adaptation groove 206 and the second adaptation groove 207, i.e. the first adaptation groove 206 and the second adaptation groove 207 run through to jointly form the accommodation groove 203.
For example, the left and right sides of the height adjusting column are respectively provided with a guide structure 10, the rolling assembly 200 of the guide structure 10 positioned at the left side is provided with two rolling surfaces 201, the first rolling surfaces 204 of the two rolling surfaces 201 are oppositely arranged in the front-back direction, and the second rolling surfaces 205 of the two rolling surfaces 201 are respectively arranged towards the right side; the rolling assembly 200 of the guide structure 10 located on the right side has two rolling surfaces 201, the first rolling surfaces 204 of the two rolling surfaces 201 being disposed opposite to each other in the front-rear direction, and the second rolling surfaces 205 of the two rolling surfaces 201 being disposed toward the left side.
In this way, the two guide structures 10 limit the height adjusting column in the left-right direction and the front-rear direction, automatically straighten the height adjusting column, balance the forward tilting moment and the rolling moment, and make the height adjusting column move only smoothly in the up-down direction.
It should be noted that the specific number and positions of the rolling assemblies 200 of each guide structure 10 are not particularly limited in the present invention, and each rolling assembly 200 of each guide structure 10 may be one or more.
Advantageously, as shown in fig. 1 to 4 and fig. 6 to 11, the rolling element 202 is a sphere, one of the first fitting groove 206 and the second fitting groove 207 has a major arc in cross-sectional shape, and it is understood that the central angle of the "major arc" is greater than 180 degrees, so that it is ensured that the rolling element 202 protrudes from the receiving groove 203 without being separated from the receiving groove 203. For example, the first fitting groove 206 has a rectangular cross-sectional shape, the second fitting groove 207 has a major arc cross-sectional shape, that is, the receiving groove 203 is constituted by a portion of a circular hole, and the depth of the receiving groove 203 is smaller than the diameter of the circular hole.
According to some embodiments of the present invention, as shown in fig. 1-4 and 6-10, the rolling assembly 200 includes a first rolling seat 210 and a second rolling seat 220, the first rolling seat 210 and the second rolling seat 220 are respectively mounted on the guide portion 120, for example, the first rolling seat 210, the second rolling seat 220 and the guide portion 120 are in shape fit, and a positioning protrusion 121 is disposed at an end of the guide portion 120 facing away from the mounting portion 110, so as to achieve positioning between the first rolling seat 210, the second rolling seat 220 and the guide portion 120.
The first rolling seat 210 is connected to the second rolling seat 220, for example, one of the first rolling seat 210 and the second rolling seat 220 is provided with a positioning column 211 and the other is provided with a positioning hole 221, and the positioning column 211 is matched in the positioning hole 221, so that the first rolling seat 210 and the second rolling seat 220 are fixed.
Wherein at least one of the first rolling seat 210 and the second rolling seat 220 has a rolling surface 201. That is, the rolling surface 201 may be provided on the first rolling seat 210 or the second rolling seat 220, and of course, the rolling surfaces 201 may be provided on the first rolling seat 210 and the second rolling seat 220, respectively.
Further, as shown in fig. 2, 4, 6 and 9, the rolling assembly 200 further includes an elastic adjusting member 230, the guide portion 120, the first rolling seat 210 and the second rolling seat 220 define an adjusting cavity 208 together, the elastic adjusting member 230 is mounted in the adjusting cavity 208, and the elastic adjusting member 230 abuts against at least one of the first rolling seat 210 and the second rolling seat 220, so that the rolling body 202 can be protected from being excessively crushed by using the elasticity of the elastic adjusting member 230, and the elastic compression function is played. For example, the guide 120 is provided with a pre-pressing hole 122, and a screw or bolt passes through the pre-pressing hole 122 and pushes the elastic adjustment member 230 against the at least one of the first rolling seat 210 and the second rolling seat 220.
Advantageously, as shown in fig. 2, 4, 6 and 9, the at least one of the first rolling seat 210 and the second rolling seat 220 has a guide inclined surface 209, and the elastic regulating member 230 has a regulating inclined surface 231 engaged with the guide inclined surface 209 for installation and elastic compression of the elastic regulating member 230.
Further, as shown in fig. 2, 4, 6 and 9, the elastic regulating member 230 includes: a mounting plate 232 and at least one adjusting plate 233, the mounting plate 232 being mounted to the guide 120, for example, the mounting plate 232 being screwed or bolted against the at least one of the first rolling seat 210 and the second rolling seat 220. The adjusting plate 233 is connected with the mounting plate 232, an included angle between the adjusting plate 233 and the mounting plate 232 is an acute angle, and the adjusting inclined plane 231 is arranged on the adjusting plate 233. When the first rolling seat 210 and the second rolling seat 220 are provided with the rolling surfaces 201, the number of the adjusting plates 233 may be two, so that all the rolling bodies 202 may be elastically pressed.
Advantageously, the angle between the adjusting plate 233 and the mounting plate 232 is greater than the angle of inclination of the guiding ramp 209 with which it cooperates, so that the free end of the adjusting plate 233 contacts the guiding ramp 209 first, ensuring a better elasticity and compression force.
Optionally, as shown in fig. 2, 4, 6 and 9, an elastic groove 234 is provided at the connection of the mounting plate 232 and the adjusting plate 233 to enhance the elasticity and strength of the elastic adjusting member 230. For example, the cross-sectional shape of the elastic groove 234 is configured as a major arc.
According to some embodiments of the present invention, as shown in fig. 1-4 and 6-9, the rolling surface 201 is provided with a cage 240, the cage 240 serving to prevent the rolling elements 202 from coming out and allowing portions of the rolling elements 202 to protrude outward.
A guide structure 10 for an oral CBCT apparatus according to an embodiment of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1 to 12, a guide structure 10 for an oral CBCT apparatus according to an embodiment of the present invention includes: a guide shoe 100 and a rolling assembly 200.
The guide holder 100 has a mounting portion 110 and a guide portion 120 connected. The mounting portion 110 is provided with mounting holes 111 for fixing to the column. The guide parts 120 are two, one end of each guide part 120 is connected with two ends of the installation part 110, the other ends of each guide part 120 are respectively provided with a positioning protrusion 121, and each guide part 120 is also provided with a pre-pressing hole 122.
The number of the rolling assemblies 200 is two, and the two rolling assemblies 200 are in one-to-one correspondence with the two guide parts 120. Each of the rolling assemblies 200 includes: the first rolling seat 210, the second rolling seat 220, the elastic adjusting member 230 and the cage 240. The first rolling seat 210 is provided with a positioning column 211, the second rolling seat 220 is provided with a positioning hole 221, and the positioning column 211 is matched in the positioning hole 221.
Specifically, the first rolling seat 210 has a first rolling surface 204 and a second rolling surface 205 that are perpendicular and connected, the first rolling surface 204 is perpendicular to the front-rear direction, and the second rolling surface 205 is perpendicular to the left-right direction. The first rolling surface 204 is provided with a first adapting groove 206 with a rectangular cross-section shape and the second rolling surface 205 is provided with a second adapting groove 207 with a major arc cross-section shape, the first adapting groove 206 and the second adapting groove 207 together define a containing groove 203, spherical rolling bodies 202 are arranged in the containing groove 203, and the rolling bodies 202 protrude from the first rolling surface 204 and the second rolling surface 205 respectively.
The second rolling seat 220 has a first rolling surface 204 and a second rolling surface 205 which are perpendicular and connected, the first rolling surface 204 is perpendicular to the front-rear direction, and the second rolling surface 205 is perpendicular to the left-right direction. The first rolling surface 204 is provided with a first adapting groove 206 with a rectangular cross-section shape and the second rolling surface 205 is provided with a second adapting groove 207 with a major arc cross-section shape, the first adapting groove 206 and the second adapting groove 207 together define a containing groove 203, spherical rolling bodies 202 are arranged in the containing groove 203, and the rolling bodies 202 protrude from the first rolling surface 204 and the second rolling surface 205 respectively.
The elastic regulating member 230 includes: a mounting plate 232 and two adjusting plates 233. Two adjusting plates 233 are connected to both ends of the mounting plate 232, respectively, and an included angle between each adjusting plate 233 and the mounting plate 232 is an acute angle, i.e., free ends of the two adjusting plates 233 are drawn toward each other. The first rolling seat 210 and the second rolling seat 220 are respectively provided with a guide inclined plane 209, each adjusting plate 233 is provided with an adjusting inclined plane 231 matched with the corresponding guide inclined plane 209, and the connecting part of each adjusting plate 233 and the mounting plate 232 is provided with an elastic groove 234 with a major arc shape. Screws or bolts pass through the pre-pressing holes 122, thereby fixing the mounting plate 232 to the mounting portion 110 and pressing the two adjusting plates 233 toward the two guide inclined surfaces 209, respectively.
The number of the retainers 240 is two, and the two retainers 240 are respectively mounted on the first rolling seat 210 and the second rolling seat 220 to stop the rolling bodies 202 on the first rolling seat 210 and the second rolling seat 220.
Therefore, after the guide structure 10 is mounted on the upright, the first rolling seat 210 of the left guide structure 10 is opened rightward and backward, the second rolling seat 220 is opened rightward and forward, the first rolling seat 210 of the right guide structure 10 is opened leftward and backward, and the second rolling seat 220 is opened leftward and forward, and the corresponding parts are symmetrically arranged, so that the rolling elements 202 respectively limit the movement of the height adjusting column in the left-right direction and the front-rear direction, and the height adjusting column can only move up and down.
An oral CBCT apparatus 1 according to an embodiment of the second aspect of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1 to 12, an oral CBCT apparatus 1 according to an embodiment of the present invention includes: the upright 20, the guide structure 10 for an oral CBCT apparatus according to the first aspect of the present invention, and the height-adjusting post 30.
Specifically, the mounting portion 110 is fixed to the column 20. The height-adjusting column 30 has a moving groove 31 extending in the up-down direction, the rolling assembly 200 is fitted in the moving groove 31 and the rolling bodies 202 are rollably along the side walls of the moving groove 31.
According to the oral CBCT device 1 of the embodiment of the present invention, the guide structure 10 for an oral CBCT device as described above is used, and the guide is good, and the assembly accuracy requirement is low, the error tolerance is large, the rolling resistance is small, the cost is low, and the life is long.
According to some embodiments of the present invention, as shown in fig. 11 and 12, two moving grooves 31 are respectively located at the left and right sides of the height adjusting column 30, two guide structures 10 are respectively installed at the left and right sides of the upright 20, and the two guide structures 10 are respectively in one-to-one correspondence with the two moving grooves 31. The rolling elements 202 of the left guide structure 10 are respectively contacted with the right side wall, the front side wall and the rear side wall of the left moving groove 31, and the rolling elements 202 of the right guide structure 10 are respectively contacted with the left side wall, the front side wall and the rear side wall of the right moving groove 31. In this way, the left-right limit and the front-rear limit of the height adjusting column 30 are realized.
Other constructions and operations of the oral CBCT apparatus 1 according to the embodiment 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 should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "particular embodiments," "examples," or "some examples," etc., means 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, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (12)
1. A guide structure for an oral CBCT device, comprising:
the guide seat extends along the up-down direction and is provided with a mounting part and a guide part which are connected;
at least one rolling assembly mounted to the guide portion and having a rolling surface provided with a rolling body capable of rolling, the rolling assembly being configured to be in rolling connection with a height adjustment column of the oral CBCT apparatus through the rolling body to guide the height adjustment column to move up and down;
the rolling surface comprises a first rolling surface and a second rolling surface which are vertical and connected, the first rolling surface is provided with a first adapting groove, the second rolling surface is provided with a second adapting groove, each rolling surface is provided with a containing groove, and the containing grooves are defined by the first adapting grooves and the second adapting grooves.
2. The guide structure for an oral CBCT apparatus according to claim 1, wherein the rolling bodies are rollably provided in the accommodation groove and partially protrude from the rolling surface.
3. The guide structure for an oral CBCT apparatus according to claim 2, wherein the rolling elements and the receiving grooves are respectively plural, and the plural rolling elements are fitted to the plural receiving grooves in one-to-one correspondence.
4. The guide structure for an oral CBCT apparatus according to claim 2, wherein the rolling surface is a plurality of rolling elements disposed parallel and/or perpendicular to each other, and the rolling elements are a plurality of rolling elements and correspond to the plurality of receiving grooves one by one.
5. The guide structure for an oral CBCT apparatus according to claim 1, wherein the rolling body is a sphere, and a cross-sectional shape of one of the first fitting groove and the second fitting groove is a major arc.
6. The guide structure for an oral CBCT device according to any one of claims 1 to 5, wherein the rolling assembly comprises:
the first rolling seat is arranged on the guide part;
the second rolling seat is arranged on the guide part and connected with the first rolling seat, and at least one of the first rolling seat and the second rolling seat is provided with the rolling surface.
7. The guide structure for an oral CBCT device of claim 6, wherein the rolling assembly further comprises:
the elastic adjusting piece, the guide part, the first rolling seat and the second rolling seat jointly limit an adjusting cavity, and the elastic adjusting piece is arranged in the adjusting cavity and is stopped against at least one of the first rolling seat and the second rolling seat.
8. The guide structure for an oral CBCT device according to claim 7, wherein the at least one of the first rolling seat and the second rolling seat has a guide slope, and the elastic adjusting member has an adjusting slope that is engaged with the guide slope.
9. The guide structure for an oral CBCT apparatus according to claim 8, wherein the elastic adjusting member comprises:
the mounting plate is mounted on the guide part;
the adjusting plate is connected with the mounting plate, an included angle between the adjusting plate and the mounting plate is an acute angle, and the adjusting inclined plane is arranged on the adjusting plate.
10. The guide structure for an oral CBCT device according to any one of claims 1 to 5, wherein the rolling surface is provided with a cage for preventing the rolling elements from coming out and allowing portions of the rolling elements to protrude outward.
11. An oral CBCT device, comprising:
a column;
the guide structure for an oral CBCT device according to any one of claims 1 to 10, the mounting portion being fixed to the upright;
the height adjusting column is provided with a moving groove extending along the up-down direction, the rolling component is matched in the moving groove, and the rolling body can roll along the side wall of the moving groove.
12. The oral CBCT device of claim 11, wherein the number of the moving grooves is two, and the moving grooves are respectively located at the left side and the right side of the height adjusting column, the number of the guiding structures is two, and the guiding structures are respectively installed at the left side and the right side of the upright column, and the two guiding structures are respectively in one-to-one correspondence with the two moving grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810421889.9A CN108478231B (en) | 2018-05-04 | 2018-05-04 | Guiding structure for oral cavity CBCT device and oral cavity CBCT device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810421889.9A CN108478231B (en) | 2018-05-04 | 2018-05-04 | Guiding structure for oral cavity CBCT device and oral cavity CBCT device |
Publications (2)
| Publication Number | Publication Date |
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| CN108478231A CN108478231A (en) | 2018-09-04 |
| CN108478231B true CN108478231B (en) | 2024-02-02 |
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| CN201810421889.9A Active CN108478231B (en) | 2018-05-04 | 2018-05-04 | Guiding structure for oral cavity CBCT device and oral cavity CBCT device |
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| CN (1) | CN108478231B (en) |
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| Publication number | Publication date |
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| CN108478231A (en) | 2018-09-04 |
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