CN214095906U - Positioning device and positioning mechanism for adjusting horizontal relative position - Google Patents
Positioning device and positioning mechanism for adjusting horizontal relative position Download PDFInfo
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- CN214095906U CN214095906U CN202022914738.2U CN202022914738U CN214095906U CN 214095906 U CN214095906 U CN 214095906U CN 202022914738 U CN202022914738 U CN 202022914738U CN 214095906 U CN214095906 U CN 214095906U
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Abstract
The application discloses a positioning device for adjusting horizontal relative position, which comprises a leveling component, a light source component and a supporting piece, wherein the leveling component and the light source component are respectively connected with the supporting piece; the leveling component adjusts the supporting piece to be horizontally arranged above an opening of the positioning shell, and light beams formed by a light source in the light source component enter the positioning shell from the opening and form an aperture at a target position so as to position the position of the to-be-positioned piece. The positioning component is used for detecting the depth distance of the to-be-positioned part in the positioning shell so as to position the to-be-positioned part at the target depth position in the positioning shell. The positioning device and the positioning mechanism are easy and convenient to operate, the working efficiency is improved, the working precision is high, and the quality of the prepared crystal is improved.
Description
Technical Field
The application relates to a positioning device and a positioning mechanism for adjusting horizontal relative positions, and belongs to the field of positioning devices.
Background
At present, in the semiconductor crystal growth process, raw material assemblies need to be placed at specified positions in a crystal growth furnace according to process requirements. The mode that adopts among the prior art is that the manual work is according to experience visual inspection adjustment raw materials subassembly, places the raw materials subassembly in the approximate required position, and the horizontal relative position completion operation of rethread handheld range finder adjustment raw materials subassembly.
In the prior art, repeated adjustment and measurement are needed, the operation is complicated, the working efficiency is low, and the labor cost is high; meanwhile, the working precision is low, the measurement error is large, and the strict process requirements cannot be met, so that the quality of the prepared crystal is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the application provides a positioning device and a positioning mechanism for adjusting the horizontal relative position, wherein a horizontal reference is provided by arranging a leveling component so that the positioning device is horizontally placed above an opening of a positioning shell; the supporting piece is arranged to connect the leveling component and the light source component so that light beams formed by the light source can accurately form an aperture at a target position on the basis of the same horizontal plane; positioning the position of the to-be-positioned part through an aperture formed by the light source component so as to accurately place the to-be-positioned part at a target position; the positioning device can accurately place the part to be positioned at the target position by one-time operation, is simple and convenient to operate, greatly improves the working efficiency, reduces the labor cost, has high working precision and small measurement error, can meet strict technological requirements, and further improves the quality of the prepared crystal.
According to one aspect of the present application, there is provided a positioning device for adjusting horizontal relative position, comprising a leveling component, a light source component and a support, wherein the leveling component and the light source component are respectively connected with the support; the leveling component adjusts the supporting piece to be horizontally arranged above an opening of the positioning shell, and light beams formed by a light source in the light source component enter the positioning shell from the opening and form an aperture at a target position so as to position the position of the to-be-positioned piece.
Optionally, the supporting member is a planar plate-shaped structure, the supporting member is overlapped above the opening of the positioning housing, the light source assembly is connected to the bottom surface of the supporting member, and the leveling assembly is connected to the top surface of the supporting member. The support piece is of a plane plate-shaped structure, is convenient to lap with the positioning shell and is convenient to hold for use; the leveling component is connected to the top surface of the supporting piece, so that the supporting piece can be observed and adjusted to be horizontally lapped above the opening of the positioning shell.
Optionally, the aperture formed by the light source assembly matches the shape of the housing of the component to be positioned.
Optionally, the aperture is of the same size as the housing of the part to be positioned. The diaphragm is matched with the shell of the part to be positioned in shape and consistent in size so as to be convenient for accurately placing the part to be positioned at a target position.
Optionally, the positioning device further comprises a scale arranged on the support to adjust the relative position of the light source assembly with respect to the horizontal direction of the positioning shell. The arrangement of the scale enables the light source assembly to adjust the relative position of the horizontal direction according to different process requirements.
Optionally, the light source assembly comprises a barrel with a lamp holder and a lens, the lamp holder is connected to the inner side of the bottom of the barrel, the bottom of the barrel is connected to the bottom surface of the supporting piece, and the lens is arranged at the top of the barrel.
Optionally, the light source assembly comprises at least two replaceable lenses, the lenses of the light source assembly comprising different shapes to match differently shaped elements to be positioned. The lens can be replaced according to the shape of the to-be-positioned piece so as to meet different process requirements.
Optionally, the light source assembly further comprises a focusing piece, the focusing piece is connected with the lamp holder, and the size of the aperture is changed by adjusting the focal length of the light source assembly through the focusing piece, so that the aperture is consistent with the size of the housing of the to-be-positioned piece.
According to still another aspect of the present application, a positioning mechanism for adjusting a spatial relative position is provided, which includes the positioning device, and further includes a distance measuring component on the supporting member and on the same side as the light source assembly, where the distance measuring component detects a depth distance of the to-be-positioned component in the positioning housing, so as to position the to-be-positioned component at a target depth position in the positioning housing.
The depth distance of the to-be-positioned part is the vertical distance from the top of the to-be-positioned part to the bottom surface of the support part.
The distance measuring component is arranged on the supporting piece and is positioned on the same side of the light source assembly, so that the distance measuring component and the light source assembly are positioned on the same horizontal reference, the measuring error is further reduced, and the working precision is improved; and the depth distance of the to-be-positioned part can be directly measured after the to-be-positioned part is adjusted to the target position, so that the working efficiency is improved, and errors caused by switching different measuring tools are avoided.
Optionally, the positioning shell is a cylindrical crystal growth furnace body, the to-be-positioned piece is a raw material assembly, the supporting piece is lapped on the top opening of the crystal growth furnace body, and the raw material assembly is placed in the crystal growth furnace body through the top opening of the crystal growth furnace body.
Optionally, an annular supporting table is formed in the side wall of the top opening of the crystal growth furnace body in a concave manner, the supporting piece is lapped on the supporting table, two ends of the supporting piece are respectively abutted against the side wall of the supporting table, and the light source is positioned in the middle of the supporting piece.
Optionally, the edge of the support member is provided with a downwardly extending flange, a rib is formed around the top opening of the crystal growth furnace body, and the flange of the support table is clamped outside the rib.
Benefits that can be produced by the present application include, but are not limited to:
1. according to the positioning device, the horizontal reference is provided by the leveling component, so that the positioning device is horizontally placed above the opening of the positioning shell; the supporting piece is arranged to connect the leveling component and the light source component so that light beams formed by the light source can accurately form an aperture at a target position on the basis of the same horizontal plane; positioning the position of the to-be-positioned part through an aperture formed by the light source component so as to accurately place the to-be-positioned part at a target position; the positioning device can accurately place the part to be positioned at the target position by one-time operation, is simple and convenient to operate, greatly improves the working efficiency, reduces the labor cost, has high working precision and small measurement error, can meet strict technological requirements, and further improves the quality of the prepared crystal.
2. According to the positioning device provided by the application, the supporting piece is of a plane plate-shaped structure, so that the supporting piece is conveniently lapped with the positioning shell and is convenient to hold for use; the leveling component is connected to the top surface of the supporting piece, so that the supporting piece can be observed and adjusted to be horizontally lapped above the opening of the positioning shell.
3. The utility model provides a positioner, the light ring that the light source subassembly formed with the shape matching of part casing to be positioned, the size is unanimous so that place part to be positioned accurately at the target location.
4. The positioning device that this application provided sets up the scale so that the relative position of horizontal direction can be adjusted according to different technology requirements to the light source subassembly.
5. The positioning device that this application provided, lens can be according to the shape change of treating the setting element to satisfy different technology demands.
6. The utility model provides a positioner, the focus through focusing piece regulation light source subassembly changes the size of light ring to make the light ring with treat that the size of setting element casing is unanimous, thereby can fix a position the not unidimensional setting element of treating.
7. According to the positioning mechanism provided by the application, the distance measuring component is arranged on the supporting piece and is positioned on the same side of the light source assembly, so that the distance measuring component and the light source assembly are positioned on the same horizontal reference, the measuring error is further reduced, and the working precision is improved; and the depth distance of the to-be-positioned part can be directly measured after the to-be-positioned part is adjusted to the target position, so that the working efficiency is improved, and errors caused by switching different measuring tools are avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic perspective view of a positioning device according to embodiment 1 of the present application;
fig. 2 is a schematic perspective view of a positioning mechanism according to embodiment 2 of the present application;
fig. 3 is a front view of a positioning mechanism according to embodiment 2 of the present application.
List of parts and reference numerals:
1. a support member; 2. a level gauge; 3. a light source assembly; 4. a lens; 5. a focusing member; 6. a barrel; 7. a distance measuring part; 8. and (4) a scale.
Detailed Description
In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.
In order that the above objects, features and advantages of the present application can be more clearly understood, the present application will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.
In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," 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 application. In this specification, the schematic representations of the terms used above are not necessarily intended to 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.
The positioning device for adjusting the horizontal relative position can be used for positioning a to-be-positioned part in any application needing to adjust the horizontal relative position, and can be used independently or used as auxiliary equipment of other equipment. For example, the device can be placed above a mine pipeline and used for accurately placing materials at a construction position below the pipeline; the device can also be placed at the opening of a semiconductor crystal growth furnace, and is used for accurately placing raw materials and the like at the position required by the process; and can be placed above engineering buildings for example, and is used for accurately positioning the position of the material to be conveyed. The present application includes, but is not limited to, the above application scenarios.
Referring to fig. 1, embodiment 1 of the present application discloses a positioning device for adjusting horizontal relative position, which includes a leveling assembly, a light source assembly 3 and a support 1, wherein the leveling assembly and the light source assembly 3 are respectively connected to the support 1; the leveling component adjusts the supporting piece 1 to be horizontally installed above the opening of the positioning shell, and light beams formed by a light source in the light source component 3 enter the positioning shell from the opening and form an aperture at a target position so as to position the position of the to-be-positioned piece. A horizontal reference is provided by arranging a leveling component, so that the positioning device is horizontally placed above the opening of the positioning shell; the supporting piece 1 is arranged to connect the leveling component and the light source component 3, so that light beams formed by the light source can accurately form an aperture at a target position on the basis of the same horizontal plane; the position of the to-be-positioned part is positioned through a diaphragm formed by the light source component 3, so that the to-be-positioned part is accurately placed at a target position; the positioning device can accurately place the part to be positioned at the target position by one-time operation, is simple and convenient to operate, greatly improves the working efficiency, reduces the labor cost, has high working precision and small measurement error, can meet strict technological requirements, and further improves the quality of the prepared crystal.
Specifically, the support 1 may have any structure, preferably a planar plate-like structure, and more preferably a rectangular parallelepiped plate-like structure. The material of the support member 1 is not limited, and may be wood, plastic, metal, etc., as long as the support function is achieved. The leveling component can be a level 2, a level ruler and the like as long as the leveling function can be realized. Preferably, the leveling assembly is a level 2.
In addition, the structure of the supporting member 1 can be modified by those skilled in the art according to the actual operation requirement, for example, a continuous groove structure is provided on both sides of the supporting member 1 to facilitate the holding, and the embodiment is not limited to the above manner.
In one embodiment, the supporting member 1 is a rectangular plate-shaped structure, the supporting member 1 is overlapped above the opening of the positioning housing, the light source assembly 3 is connected to the bottom surface of the supporting member 1, and the level gauge 2 is connected to the top surface of the supporting member 1. The support piece 1 is of a cuboid plate-shaped structure, is convenient to lap joint with the positioning shell and is convenient to hold for use; the level 2 is attached to the top surface of the support 1 to facilitate viewing and adjusting the support 1 to horizontally overlap the opening of the positioning housing.
Specifically, the connection mode between the light source assembly 3 and the level gauge 2 and the supporting member 1 is not limited, and may be a snap connection, a threaded connection, an adhesive connection, or the like.
As a preferred embodiment, the light source assembly 3 is connected to the bottom surface of the support 1 by means of a snap fit, and the level 2 is connected to the top surface of the support 1 by means of an adhesive.
As an embodiment, the aperture formed by the light source assembly 3 matches the shape of the housing of the component to be positioned.
In one embodiment, the aperture corresponds to the size of the housing of the part to be positioned. The diaphragm is matched with the shell of the part to be positioned in shape and consistent in size so as to accurately place the part to be positioned at a target position.
As an embodiment, a scale 8 is further included in the support 1 to adjust the relative position of the light source assembly 3 with respect to the horizontal direction of the positioning housing. The scale 8 is arranged so that the light source assembly 3 can adjust the relative position in the horizontal direction according to different process requirements.
The arrangement mode of the scale 8 is not limited, and further, a scale 8 can be arranged and connected to the top surface of the support member 1, or scales can be directly marked on the top surface of the support member 1. Specifically, if the scale of the central position of the light source is 0, the scales on the two sides are sequentially increased.
The mode of adjusting the relative position of 3 horizontal directions of light source subassembly does not do the injecion, can slide adjustment or set up the draw-in groove in corresponding scale department to make light source subassembly 3 satisfy the horizontal relative position of different technological requirements, the utility model discloses be not limited to above mode.
As an embodiment not shown, the positions of the scale 8 on the support 1 corresponding to the scales are respectively provided with a slot, and the light source assembly 3 is connected to the corresponding scale positions on the support 1 by a buckle according to the process requirements.
As an embodiment, the light source assembly 3 includes a barrel 6 having a lamp holder attached to the inside of the bottom of the barrel 6, and a lens 4 attached to the bottom of the support member 1, the lens 4 being disposed on the top of the barrel 6.
The connection mode of the lamp holder and the inner side of the bottom of the cylinder 6, the bottom of the cylinder 6 and the bottom surface of the support member 1 and the connection mode of the lens 4 and the top of the cylinder 6 are not limited, and can be a buckle connection, a threaded connection or an adhesive connection and the like. In one embodiment, the lamp holder is screwed inside the bottom of the barrel 6, the bottom of the barrel 6 is snapped on the bottom of the support member 1, and the lens 4 is screwed on the barrel 6.
The number of the lenses 4 is not limited as long as the lenses 4 can be matched with the shapes of different positioning parts to be positioned.
As an embodiment, the light source assembly 3 comprises at least two replaceable lenses 4, the lenses 4 comprised by the light source assembly 3 being shaped differently to match differently shaped elements to be positioned. The lens 4 can be replaced according to the shape of the to-be-positioned piece so as to meet different process requirements.
As an embodiment, the light source assembly 3 further includes a focusing element 5, the focusing element 5 is connected to the lamp holder, and the focusing element 5 adjusts the focal length of the light source assembly 3 to change the size of the aperture, so that the aperture is consistent with the size of the housing of the member to be positioned.
The focusing piece 5 and the lamp holder connected mode can be threaded connection, adhesive bonding and the like, the focusing mode is not limited, telescopic focusing, rotary focusing and the like can be realized, and the focal length of the light source component 3 can be changed.
As an embodiment, the focusing piece 5 is arranged at the bottom of the lamp holder and is in rotary threaded connection with the lamp holder, and the focusing mode is telescopic focusing. The lamp holder is lifted or lowered by rotating the focusing piece 5, so that the focal length of the light source assembly 3 is changed to change the size of the diaphragm, and the diaphragm is consistent with the size of the shell of the piece to be positioned.
Referring to fig. 2, embodiment 2 of the present application discloses a positioning mechanism for adjusting a spatial relative position, which includes the above positioning device, and further includes a distance measuring component 7 on the supporting member 1 and on the same side as the light source assembly 3, where the distance measuring component 7 detects a depth distance of a to-be-positioned member in the positioning housing, so as to position the to-be-positioned member at a target depth position in the positioning housing. The distance measuring component 7 is arranged on the supporting piece 1 and is positioned on the same side of the light source assembly 3, so that the distance measuring component 7 and the light source assembly 3 are positioned on the same horizontal reference, the measuring error is further reduced, and the working precision is improved; and the depth distance of the to-be-positioned part can be directly measured after the to-be-positioned part is adjusted to the target position, so that the working efficiency is improved, and errors caused by switching different measuring tools are avoided.
The distance measuring means 7 is not limited, and may be a laser distance meter, an ultrasonic distance meter, or the like as long as a function of measuring a distance is realized. Preferably, the distance measuring means 7 is a laser distance meter.
Specifically, the depth distance of the to-be-positioned part is the vertical distance from the top of the to-be-positioned part to the bottom surface of the support part 1.
As an implementation mode, the positioning shell is a cylindrical crystal growth furnace body, the to-be-positioned piece is a raw material component, the supporting piece 1 is overlapped on the top opening of the crystal growth furnace body, and the raw material component is placed in the crystal growth furnace body through the top opening of the crystal growth furnace body.
Specifically, the raw material assembly may be a crystal, a raw material barrel, a crucible assembly, or the like. The following description will be given by taking the positioning housing as a cylindrical crystal growth furnace body and the to-be-positioned piece as a cylindrical crystal, including but not limited to the above.
As an implementation mode, the side wall of the top opening of the crystal growth furnace body is concave inwards to form an annular support platform, the support piece 1 is lapped on the support platform, two ends of the support piece 1 are respectively abutted against the side wall of the support platform, and the light source is positioned in the middle of the support piece 1. The annular supporting platform provides supporting force for the bottom surface of the supporting piece 1, so that the supporting piece is stably lapped on the supporting platform, and the side wall of the supporting platform provides supporting force for the two ends of the supporting piece 1, so that the supporting piece and the supporting platform are stably lapped, and the supporting piece 1 is prevented from displacing and affecting measured data.
As another embodiment, the edge of the supporting piece 1 is provided with a flanging extending downwards, a convex rib is formed around the top opening of the crystal growth furnace body, and the flanging of the supporting table is clamped outside the convex rib. The flanging of the support piece 1 is clamped with the convex rib to ensure that the support piece 1 is stable, the operation is simple and convenient, and the working precision is improved.
A preferred method of using any of the above positioning mechanisms, comprising the steps of:
1) putting a cylindrical crystal to be positioned at any position of the bottom of the crystal growth furnace body;
2) selecting a circular lens 4 according to the process requirement, connecting a light source assembly 3 to a scale position corresponding to a process requirement scale 8 in advance, setting a corresponding focal length, overlapping a positioning mechanism on a supporting table at the top of a crystal growth furnace body, enabling two ends of the positioning mechanism to abut against the side wall of the supporting table or clamping a flanging of the positioning mechanism at the outer side of a convex rib at the top of the crystal growth furnace body, adjusting a supporting piece 1 according to a level meter 2 to enable the supporting piece to be horizontally overlapped above an opening of the furnace body, moving a cylindrical crystal into an aperture according to a circular aperture formed at the bottom of the furnace by the light source assembly 3, and adjusting the crystal to enable the bottom edge of the crystal to be just matched with the aperture in shape;
3) and measuring the vertical distance from the top of the crystal to the bottom surface of the support member 1 by using a laser range finder, and removing the positioning mechanism to finish the operation.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A positioning device for adjusting horizontal relative position is characterized by comprising a leveling component, a light source component and a supporting piece, wherein the leveling component and the light source component are respectively connected with the supporting piece; the leveling component adjusts the supporting piece to be horizontally arranged above an opening of the positioning shell, and light beams formed by a light source in the light source component enter the positioning shell from the opening and form an aperture at a target position so as to position the position of the to-be-positioned piece.
2. The positioning device as set forth in claim 1, wherein the supporting member is a planar plate-like structure, the supporting member overlaps the opening of the positioning housing, the light source assembly is connected to a bottom surface of the supporting member, and the leveling assembly is connected to a top surface of the supporting member.
3. The positioning device of claim 2, wherein the aperture formed by the light source assembly matches the shape of the housing of the component to be positioned; and/or
The aperture is the same size as the shell of the part to be positioned.
4. The positioning device according to claim 1, further comprising a scale provided on the support to adjust a relative position of the light source assembly with respect to a horizontal direction of the positioning housing.
5. The positioning device as set forth in any one of claims 1 to 4, wherein the light source assembly comprises a barrel with a lamp holder attached inside a bottom of the barrel attached to a bottom surface of the support member and a lens disposed on a top of the barrel.
6. The positioning device of claim 5, wherein the light source assembly comprises at least two replaceable lenses, the lenses of the light source assembly comprising different shapes to match differently shaped elements to be positioned.
7. The positioning device as claimed in claim 6, wherein the light source assembly further comprises a focusing member, the focusing member is connected to the lamp holder, and the focusing member adjusts the focal length of the light source assembly to change the size of the aperture, so that the aperture is consistent with the size of the housing of the positioning member to be positioned.
8. A positioning mechanism for adjusting relative spatial position, comprising the positioning device of any one of claims 1-7, and further comprising a distance measuring component on the supporting member and on the same side as the light source assembly, wherein the distance measuring component detects the depth distance of the to-be-positioned component in the positioning housing, so as to position the to-be-positioned component at the target depth position in the positioning housing.
9. The positioning mechanism according to claim 8, wherein the positioning housing is a cylindrical crystal growth furnace body, the to-be-positioned member is a raw material assembly, the supporting member is overlapped with the top opening of the crystal growth furnace body, and the raw material assembly is placed in the crystal growth furnace body through the top opening of the crystal growth furnace body.
10. The positioning mechanism according to claim 9, wherein the side wall of the top opening of the crystal growth furnace body is recessed to form an annular support platform, the support member is overlapped on the support platform, two ends of the support member are respectively abutted against the side wall of the support platform, and the light source is positioned in the middle of the support member; or
The edge of the supporting piece is provided with a flanging extending downwards, a convex rib is formed around the top opening of the crystal growth furnace body, and the flanging of the supporting table is clamped outside the convex rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022914738.2U CN214095906U (en) | 2020-12-07 | 2020-12-07 | Positioning device and positioning mechanism for adjusting horizontal relative position |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022914738.2U CN214095906U (en) | 2020-12-07 | 2020-12-07 | Positioning device and positioning mechanism for adjusting horizontal relative position |
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| CN214095906U true CN214095906U (en) | 2021-08-31 |
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| CN202022914738.2U Active CN214095906U (en) | 2020-12-07 | 2020-12-07 | Positioning device and positioning mechanism for adjusting horizontal relative position |
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