CN216054566U

CN216054566U - Focal length adjusting structure of electron microscope

Info

Publication number: CN216054566U
Application number: CN202121577370.3U
Authority: CN
Inventors: 谢永玲
Original assignee: Shenzhen Aimi Optical Communication Co ltd
Current assignee: Shenzhen Aimi Optical Communication Co ltd
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2022-03-15
Anticipated expiration: 2031-07-12

Abstract

The application discloses electron microscope focus adjusts structure, including base and fixed adjustment mechanism and moving mechanism, fixed adjustment mechanism includes front end housing, adjustable ring and removal chamber, and the one end lateral wall of base is provided with the external screw thread, and the base passes through the screw thread mouth threaded connection of external screw thread and adjustable ring, and the removal chamber has been cup jointed to the inner chamber inside of base, removes the inside that the chamber runs through the front end housing. This application will remove the chamber and be connected with it through adjustable ring thread mouth, will assemble the adjustable ring again with remove the chamber and pack into the base, and put into solid fixed ring again afterwards and twist the locking with the screw from base flange bottom, make to remove the chamber and do axial motion along the base inner chamber through rotating the adjustable ring to the measured object is removed the chamber and is fixed in the objective lens's on the base apart from the purpose in order to reach the focus regulation.

Description

Focal length adjusting structure of electron microscope

Technical Field

The application relates to the technical field of precision instrument equipment, in particular to a focal length adjusting structure of an electron microscope.

Background

The existing focal length adjusting mechanism of the electron microscope is divided into a fixed adjusting part and a movable part, wherein the fixed adjusting part comprises a base, an adjusting outer ring, an adjusting inner ring and a fixing ring; the moving part is formed by a moving cavity. The adjusting part is connected with the base through the fixing ring to fix the adjusting ring, the adjusting ring is connected with the movable cavity through the adjusting inner ring, and the movable cavity is driven to move axially when the adjusting ring is rotated, so that the distance between a measured object and the lens is changed to achieve the purpose of adjusting the focal length.

In conclusion, the existing adjusting mechanism has many parts and is troublesome to mount, errors exist between the parts and the assembly of the parts, so that the final structural assembly has larger errors, and the problems of unsmooth adjustment and obvious retardation are often caused in practical use; in addition, there is a serious deficiency in the protection of the equipment, and the user can freely detach the adjustment module without opening the equipment housing, which makes it difficult to determine the after-sales liability of the user and the equipment supplier. Therefore, an electron microscope focus adjusting structure is proposed to solve the above problems.

Disclosure of Invention

The embodiment provides an electron microscope focal length adjusting structure for solving the problems that the existing adjusting mechanism has a plurality of parts and is troublesome to mount, errors exist between the parts and the assembly of the parts, so that the final structure assembly has larger errors, the adjustment is not smooth frequently in practical use, and the retardation is obvious; in addition, there is a serious deficiency in the protection of the equipment, and the user can freely detach the adjustment module without opening the equipment housing, which makes it difficult to determine the after-sales liability of the user and the equipment supplier.

According to one aspect of the present application, there is provided an electron microscope focal length adjustment structure, comprising a base, and a fixed adjustment mechanism and a moving mechanism;

the fixed adjusting mechanism comprises a front end cover, an adjusting ring and a moving cavity, wherein an external thread is arranged on the side wall of one end of the base, the base is in threaded connection with a threaded port of the adjusting ring through the external thread, the moving cavity is sleeved in an inner cavity of the base, and the moving cavity penetrates through the interior of the front end cover;

the moving mechanism comprises a fixing ring, a locking ring, a screw and a limiting pin, a flange is arranged on the side wall of one end of the base, the locking ring is arranged on the outer side of one end of the base, and one end of the base, which is abutted to the adjusting ring, of one end of the flange is arranged.

Further, a threaded hole is formed in one end of the locking ring, a screw is connected to the threaded hole in a threaded mode, and the locking ring is located on the outer side of one end of the base.

Further, the front end cover covers the outer side of one end of the adjusting ring, and a moving cavity is sleeved inside the front end cover.

Further, the inside fixed connection of base is spacing pin, spacing pin is connected with the lateral wall cooperation in removal chamber, spacing pin is located the inside of adjustable ring.

Further, the base passes through the fixed ring of screw threaded connection, the fixed ring cup joints in the one end outside of adjustable ring.

Further, an adjusting ring is arranged outside one end of the moving cavity.

By adopting the fixed adjusting mechanism and the moving mechanism, the problems that the existing adjusting mechanism has various parts and is troublesome to mount, errors exist between the parts and the part assembly, the final structural assembly has larger errors, the adjustment is not smooth in practical use, and the retardation is obvious are solved; in addition, there is a serious deficiency in the protection of the equipment, and the user can freely detach the adjustment module without opening the equipment housing, which makes it difficult to determine the after-sales liability of the user and the equipment supplier.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic diagram of an overall explosive structure of an embodiment of the present application;

FIG. 2 is a schematic overall structure diagram of an embodiment of the present application;

FIG. 3 is a top view of an embodiment of the present application.

In the figure: 1. front end cover, 2, adjustable ring, 3, fixed ring, 4, locking ring, 5, base, 6, screw, 7, spacing pin, 8, removal chamber.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The focal length adjustment structure in the present embodiment can be applied to various electron microscopes, for example, the following focal length adjustment structure is provided in the present embodiment, and the focal length adjustment structure in the present embodiment can be used for the following microscopes.

The scanning electron microscope comprises a microscope main body, a detection platform, a placement platform and a display screen, wherein the microscope main body is arranged at the top end of the placement platform through a support frame, the detection platform is arranged at the bottom end of the microscope main body at the top end of the placement platform, a first fixed block is arranged at the front end of the detection platform, a limiting plate is fixedly connected to the top end of the first fixed block, telescopic rods are symmetrically and fixedly connected to the outer ends of the inner sides of the limiting plate, the inner sides of the telescopic rods are fixedly connected to the outer ends of a clamping plate, first springs are welded to the outer ends of the clamping plate, one ends of the first springs, far away from the clamping plate, are welded to the inner sides of the limiting plate, the first springs are all wound on the outer wall of the telescopic rods, the middle parts of the outer sides of the clamping plate are all fixedly connected to second fixed blocks, two groups of first support rods are all fixedly connected to the middle parts of the second fixed blocks, and the outer sides of the first support rods are all fixedly connected to a first sliding block, and the equal sliding connection of first slider is on the outer wall of first slide bar, the equal fixed connection of first slide bar is at the middle part of first spout, and first spout is all seted up in the inboard of limiting plate, microscope main part top mid-mounting has detecting system, and detecting system's right side top is provided with the access port, and the top of access port is connected with the electric wire, and the electric wire is kept away from the one end of access port and is connected the rear end at the display screen, the bottom of display screen is through connecting base fixed connection on place the platform top right side, its effect can be comparatively safe and stable carry out the centre gripping fixed to bearing the thing, make the device more reasonable convenient.

The inner middle parts of the two groups of first supporting rods are connected through welding with the second springs, the shapes of the second springs can be changed, the first supporting rods can be rebounded conveniently, and stability and practicability are improved.

The left side middle part fixedly connected with connecting block of the first fixed block in left side, and the middle part through connection of connecting block has the screw, and the bottom of screw is inserted and is established at the fixed inslot of seting up in second slide bar top, second slide bar fixed connection is at the middle part of second spout, and the front end left side middle part at testing platform is seted up to the second spout, all sliding connection has the second slider on the outer wall of second slide bar, and the top fixed connection of second slider is at the bottom middle part of the first fixed block in left side, its effect lies in can be comparatively convenient carry out position adjustment to the first fixed block in left side of pulling, make the device more reasonable.

The inboard equidistance of grip block is glued and is had the multiunit protection lug, and the material of protection lug is the rubber material, and its effect can be comparatively safe protect the bearing thing for the device is more stable.

The rear end middle part fixedly connected with third fixed block of display screen, and the middle part of third fixed block is connected with the second bracing piece, the top at the screw is connected to the second bracing piece, and the screw cover is established on the outer wall of lead screw, the front end of lead screw is through pivot fixed connection at the rear end middle part of head rod, and head rod fixed connection is on place the platform, the middle part that the rear end of lead screw runs through the second connecting rod extends fixed connection and changes the front end of handle, and the bottom fixed connection of second connecting rod is on place the platform, its effect can be comparatively convenient adjust the angle of display screen, make the device more complete.

The rear end outer wall of the rotating handle is sleeved with a handle sleeve, the outer side of the handle sleeve is provided with anti-slip lines, and the handle sleeve can be controlled to drive the second connecting rod to rotate stably, so that the device is more stable.

Of course, the present embodiment can also be used for other electron microscopes. Here, details are not repeated, and the following describes a focal length adjustment structure according to an embodiment of the present application.

Referring to fig. 1-3, a focus adjusting structure of an electron microscope includes a base 5, a fixing and adjusting mechanism and a moving mechanism;

the fixed adjusting mechanism comprises a front end cover 1, an adjusting ring 2 and a moving cavity 8, wherein an external thread is arranged on the side wall of one end of the base 5, the base 5 is in threaded connection with a threaded port of the adjusting ring 2 through the external thread, the moving cavity 8 is sleeved in an inner cavity of the base 5, and the moving cavity 8 penetrates through the interior of the front end cover 1;

the moving mechanism comprises a fixing ring 3, a locking ring 4, a screw 6 and a limiting pin 7, a flange is arranged on the side wall of one end of the base 5, the locking ring 4 is arranged on the outer side of one end of the base 5, and one end of the base 5, which is abutted against the adjusting ring 2, of one end of the flange is arranged.

The movable cavity is connected with the adjusting ring through a threaded opening of the adjusting ring, the assembled adjusting ring and the movable cavity are installed in the base, then the fixed ring is placed in the base, the base is screwed in and locked from the bottom of a flange of the base through screws, the movable cavity is made to move axially along the inner cavity of the base by rotating the adjusting ring, and therefore the distance between a measured object on the movable cavity and an objective lens fixed on the base is changed, and the purpose of adjusting the focal length is achieved.

A threaded hole is formed in one end of the locking ring 4, a screw 6 is connected to the inner portion of the threaded hole in a threaded mode, and the locking ring 4 is located on the outer side of one end of the base 5; the front end cover 1 covers the outer side of one end of the adjusting ring 2, and a moving cavity 8 is sleeved in the front end cover 1; a limiting pin 7 is fixedly connected inside the base 5, the limiting pin 7 is connected with the outer side wall of the moving cavity 8 in a matched mode, and the limiting pin 7 is located inside the adjusting ring 2; the base 5 is in threaded connection with the fixing ring 3 through a screw 6, and the fixing ring 3 is sleeved on the outer side of one end of the adjusting ring 2; an adjusting ring 2 is arranged outside one end of the moving cavity 8.

When the device is used, the device consists of a base 5, an adjusting ring 2, a fixed ring 3 and a moving cavity 8, wherein the moving cavity 8 is connected with the adjusting ring 2 through a threaded opening of the adjusting ring, the assembled adjusting ring 2 and the moving cavity 8 are arranged in the base 5, then the fixed ring 3 is arranged and screwed and locked from the bottom of a flange of the base 5 through a screw 6, the moving cavity 8 is axially moved along the inner cavity of the base 5 by rotating the adjusting ring 2, so that the distance between a measured object on the moving cavity 8 and an objective lens fixed on the base 5 is changed to achieve the purpose of adjusting the focal length, the moving cavity 8 axially moves when the screw rotates, the adjusting ring 2 is fixed by the fixed ring 3 to ensure that the adjusting ring 2 cannot axially move when rotating, the moving cavity 8 moves in the base 5 by the distance limited by a limit pin 7, and the device is fixed on a panel of a machine shell through the locking ring 4, therefore, assembly errors caused by multiple parts are reduced, the protection effect of the equipment is improved, and users can not detach the equipment easily.

The application has the advantages that:

1. the method is simple to operate, the movable cavity is connected with the movable cavity through the threaded opening of the adjusting ring, the assembled adjusting ring and the movable cavity are installed in the base, then the fixed ring is placed in the base and screwed in and locked from the bottom of the flange of the base through the screw, the movable cavity moves axially along the inner cavity of the base by rotating the adjusting ring, and therefore the distance between a measured object on the movable cavity and an objective lens fixed on the base is changed, and the purpose of adjusting the focal length is achieved;

2. this application is rational in infrastructure, remove the chamber and follow axial displacement when the screw thread rotates, the adjustable ring is fixed by the fixed ring, can not follow axial motion when guaranteeing the adjustable ring rotation, remove the chamber and remove the distance that the chamber removed by spacing pin restriction in the base, fix this device on the casing panel through the locking ring, so both reduced the assembly error because of the part is numerous and causes, also promoted the protecting effect of equipment for the user can not dismantle easily.

It is well within the skill of those in the art to implement, without undue experimentation, the present application is not directed to software and process improvements, as they relate to circuits and electronic components and modules.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A focal length adjusting structure of an electron microscope is characterized in that: comprises a base (5), a fixed adjusting mechanism and a moving mechanism;

the fixed adjusting mechanism comprises a front end cover (1), an adjusting ring (2) and a moving cavity (8), wherein an external thread is arranged on the side wall of one end of the base (5), the base (5) is in threaded connection with a threaded port of the adjusting ring (2) through the external thread, the moving cavity (8) is sleeved in an inner cavity of the base (5), and the moving cavity (8) penetrates through the interior of the front end cover (1);

the moving mechanism comprises a fixing ring (3), a locking ring (4), a screw (6) and a limiting pin (7), a flange is arranged on the side wall of one end of the base (5), the locking ring (4) is arranged on the outer side of one end of the base (5), and one end, abutting against the clamping adjusting ring (2), of one end of the flange is arranged on the base (5).

2. The focus adjusting structure of an electron microscope according to claim 1, wherein: a threaded hole is formed in one end of the locking ring (4), a screw (6) is connected with the threaded hole in a threaded mode, and the locking ring (4) is located on the outer side of one end of the base (5).

3. The focus adjusting structure of an electron microscope according to claim 1, wherein: the front end cover (1) covers the outer side of one end of the adjusting ring (2), and a moving cavity (8) is sleeved in the front end cover (1).

4. The focus adjusting structure of an electron microscope according to claim 1, wherein: the inside fixed connection of base (5) is spacing pin (7), spacing pin (7) are connected with the lateral wall cooperation that removes chamber (8), spacing pin (7) are located the inside of adjustable ring (2).

5. The focus adjusting structure of an electron microscope according to claim 1, wherein: the base (5) is in threaded connection with the fixing ring (3) through a screw (6), and the fixing ring (3) is sleeved on the outer side of one end of the adjusting ring (2).

6. The focus adjusting structure of an electron microscope according to claim 1, wherein: an adjusting ring (2) is arranged on the outer side of one end of the moving cavity (8).