Objective lens dismounting and replacing device applied to microscope

Abstract

The utility model discloses an objective lens dismounting and replacing device applied to a microscope, an objective lens part is connected with and dismounted from a lens barrel part under the guiding and limiting of a bayonet groove in a limiting mechanism, and the problem of tedious operation of multi-circle rotation of common threaded connection is solved. The objective lens component and the lens barrel component can be quickly and accurately butted to a proper connection position through a positioning bulge arranged in the positioning mechanism; the bayonet groove ascends spirally, so that the objective lens component and the lens barrel component are connected more closely and stably in the rotary connection process and are not easy to fall off; the locking mechanism realizes locking under the connection of the objective lens component and the lens barrel component, and prevents the objective lens component from falling off relative to the lens barrel component due to the relative rotation and sliding between the objective lens and the lens barrel component, so that the objective lens component and the lens barrel component are connected more firmly. According to the scheme, the overall structure is simple, the lens cone part and the objective lens part can be quickly and effectively connected and detached, and the overall installation and detachment process is simple and easy to operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical equipment, and in particular relates to a device for disassembling and replacing an objective lens used in a microscope. Background Art

[0002] In the existing microscope, based on the needs of different observation magnifications during observation and based on the different magnifications of the objective lens, it is necessary to replace the objective lens of different magnifications, and then the objective lens needs to be disassembled and then replaced; the objective lens of the prior art is generally connected by a thread, and when replacing, the objective lens needs to be rotated, the objective lens is removed from the lens barrel, and then the objective lens that meets the needs is connected to the lens barrel through the thread to achieve the installation and removal of the objective lens; however, the threaded connection requires the objective lens to be rotated multiple times, which is cumbersome to operate, and the existing objective lens is prone to damage to the thread structure during frequent disassembly and assembly, which is not convenient for rapid replacement of the objective lens, and thus a lot of time is wasted on replacement, affecting the overall working efficiency of the microscope. Utility Model Content

[0003] In order to solve the above problems in the prior art, the utility model provides an objective lens disassembly and replacement device for a microscope.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] An objective lens disassembly and replacement device for a microscope comprises an objective lens component and a lens barrel component connected to the objective lens component, and comprises a limiting mechanism and a positioning mechanism relatively arranged on the objective lens component and the lens barrel component;

[0006] The objective lens component is connected with the lens barrel component based on the guiding and limiting cooperation of the positioning mechanism and the limiting mechanism.

[0007] Preferably, the limiting mechanism is provided with a bayonet slot for guiding the limiting positioning mechanism.

[0008] Preferably, the positioning mechanism is provided with a positioning protrusion that cooperates with the guide limit of the bayonet slot.

[0009] Preferably, the bayonet slot is spiral-shaped.

[0010] Preferably, it comprises at least two positioning protrusions, and the positioning protrusions correspond to the bayonet slots one by one.

[0011] Preferably, two positioning protrusions are included, and the two positioning protrusions are symmetrical about the axis where the center of the field of view of the objective lens component is located based on the connection between the objective lens component and the lens barrel component.

[0012] Preferably, a locking mechanism is included to lock the connection between the objective lens component and the lens barrel component.

[0013] Preferably, the locking mechanism comprises a telescopic member and a clamping portion which are relatively arranged on the objective lens component and the lens barrel component;

[0014] The telescopic member is engaged with the engaging portion to lock the connection between the objective lens component and the lens barrel component.

[0015] Preferably, the engaging portion comprises a locking groove engaged with the telescopic member.

[0016] The beneficial effects of the utility model are as follows: the utility model proposes a device for disassembling and replacing an objective lens for a microscope, wherein the objective lens component is connected to the lens barrel component based on the guiding and limiting cooperation of the positioning mechanism and the limiting mechanism, and the objective lens component is connected and disassembled with the lens barrel component under the guiding and limiting of the bayonet groove in the limiting mechanism, thereby solving the problem of cumbersome operation of rotating multiple circles of ordinary threaded connection. In addition, the positioning protrusion provided in the positioning mechanism can quickly and accurately dock the objective lens component with the lens barrel component at a suitable connection position, making the connection and disassembly operation of the objective lens and the lens barrel simple and fast, and the lens can be quickly switched to reduce the operation time; at the same time, the bayonet groove rises in a spiral shape, making the connection between the objective lens component and the lens barrel component more fitting and stable during the rotation connection process, and not easy to fall off; in addition, the locking mechanism is used to realize locking when the objective lens component is connected to the lens barrel component, thereby preventing relative rotation and sliding between the objective lens and the lens barrel component, which causes the objective lens component to fall off relative to the lens barrel component, and making the connection between the objective lens component and the lens barrel component more firmly. The overall structure of the solution is simple and can quickly and effectively connect and disassemble the lens barrel component and the objective lens component. The overall installation and disassembly process is simple and easy to operate, while avoiding wear of the thread and increasing the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an objective lens disassembly and replacement device for a microscope provided with a guide and limit mechanism in the utility model;

[0018] Figure 2 It is a schematic diagram of the overall structure of an objective lens disassembly and replacement device for a microscope provided with a locking mechanism and a guide limit mechanism in the utility model;

[0019] Figure 3 It is a structural schematic diagram of an objective lens component provided with a positioning mechanism in a guiding and limiting mechanism in the utility model;

[0020] Figure 4 It is a schematic structural diagram of an objective lens component provided with a positioning mechanism in a guide limit assembly and a clamping portion in a locking mechanism in the utility model;

[0021] Figure 5 This is a schematic cross-sectional structure diagram of a lens barrel component of an embodiment of the locking mechanism in the utility model;

[0022] Figure 6 This is a schematic structural diagram of another embodiment of the locking mechanism in the present invention.

[0023] In the figure: 1-lens barrel component, 2-objective lens component, 3-guiding and limiting mechanism, 31-positioning mechanism, 32-limiting mechanism, 4-locking mechanism, 41-telescopic member, 411-telescopic rod, 412-dial button, 413-elastic member, 42-clamping part. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] In the use of existing microscopes, it is necessary to replace objective lenses with different magnifications when different observation magnifications are required. When the objective lens and the lens barrel are connected and disassembled under the threaded connection, they need to be rotated multiple times, which increases the time for connection and disassembly. In addition, multiple connections and disassemblies are likely to cause thread wear, which is inconvenient for subsequent installation and disassembly. Therefore, this scheme designs an objective lens disassembly and replacement device for microscopes, so that the objective lens and the lens barrel can be connected or disassembled by rotating the connection for no more than one circle, which greatly reduces the time for installation or disassembly and realizes rapid switching of lenses.

[0026] Embodiment 1

[0027] like Figure 1 As shown, an objective lens disassembly and replacement device for a microscope comprises an objective lens component 2 and a lens barrel component 1 connected to the objective lens component 2, and comprises a limiting mechanism (32) and a positioning mechanism (31) relatively arranged on the objective lens component (2) and the lens barrel component (1); the objective lens component (2) is connected to the lens barrel component (1) based on the guiding and limiting cooperation of the positioning mechanism (31) and the limiting mechanism (32). That is, the limiting mechanism 32 is arranged on one of the objective lens component 2 and the lens barrel component 1; the positioning mechanism 31 is arranged on the other of the objective lens component 2 and the lens barrel component 1; specifically, in this embodiment, the limiting mechanism 32 is arranged on the lens barrel component 1, and the positioning mechanism 31 is arranged on the objective lens component 2. Wherein, the guiding and limiting mechanism 3 comprises the positioning mechanism 31 and the limiting mechanism 32.

[0028] Furthermore, the limiting mechanism 32 is provided with a bayonet slot for guiding the limiting positioning mechanism 31. The positioning mechanism 31 is provided with a positioning protrusion for cooperating with the bayonet slot for guiding the limiting. Figure 3 shown.

[0029] Specifically, the bayonet slot provided on the limiting mechanism 32 is arranged at the side position of the end of the lens barrel component 1 facing the objective lens component 2, close to the end edge, so as to facilitate the connection with the objective lens component 2 under the guidance and limitation of the bayonet slot. One end of the bayonet slot is arranged at the end edge of the lens barrel component 1 as the entrance of the bayonet slot, so as to facilitate the accurate matching of the positioning protrusion provided on the positioning mechanism 31 with the bayonet slot, and then the positioning protrusion is engaged with the bayonet slot under the guidance and limitation of the bayonet slot, so that the lens barrel component 1 is connected with the objective lens component 2. It should be noted that the bayonet slot can be arranged on the side inner wall of the lens barrel component 1, the side outer wall of the connection part with the object, or the bayonet slot runs through the side shell. In addition, the positioning protrusion provided in the positioning mechanism 31 adopts a fixedly arranged protrusion component, and the protrusion component is adapted to the bayonet slot and can move in the bayonet slot; the protrusion component can adopt a columnar member, such as a screw, etc., which is fixed on the component and protrudes from the component surface, and the protruding part is engaged with the bayonet slot under the guidance and limitation of the bayonet slot; based on the connection position relationship between the objective lens component 2 and the lens barrel component 1, the position of the bayonet slot and the positioning protrusion is set according to demand. Based on the fact that the bayonet slot can be set on the side inner wall, side outer wall of the connection part of the lens barrel component 1 including but not limited to the side inner wall, side outer wall of the connection part of the lens barrel component 1 with the objective lens component 2, or the bayonet slot runs through the side shell, etc., the positioning protrusion is correspondingly set on the side outer wall, side inner wall of the connection part of the lens barrel component 1 with the objective lens component 2, etc. For example, when the bayonet slot is set on the inner side wall of the lens barrel component 1, the positioning protrusion is set on the outer side wall of the objective lens component 2, and the positioning protrusion on the outer side wall of the objective lens component 2 is guided and limited with the bayonet slot on the inner side wall of the lens barrel component 1; when the bayonet slot is set on the outer side wall of the lens barrel component 1, the positioning protrusion is set on the inner side wall of the objective lens component 2; when the bayonet slot is set on the side of the lens barrel component 1 and penetrates the side shell, the positioning protrusion can be arbitrarily set at a position corresponding to the bayonet slot on the inner or outer wall of the objective lens component 2. The positions of the bayonet slot and the positioning protrusion can be customized based on needs.

[0030] Further, in order to make the object lens component 2 and the lens barrel component 1 connect more closely, the bayonet slot is spiral. In the present embodiment, the bayonet slot rises in a spiral on the lens barrel component 1, that is, the bayonet slot entrance position from the bottom to the top of the lens barrel component is lower than the bayonet slot terminal position, which is convenient for the object lens component 2 to be connected with the lens barrel component 1, so that the object lens component 2 and the lens barrel component 1 are connected more closely, and the operation time of the connection is reduced, so that the connection and disassembly process are simpler. In addition, one of the object lens component 2 and the lens barrel component 1 is provided with an extension plate, and the extension plate, when the object lens component 2 and the lens barrel component 1 are connected, contacts and cooperates with the end of the other one of the object lens component 2 and the lens barrel component 1; the extension plate plane is parallel to the end plane of the other one of the object lens component 2 and the lens barrel component 1, and then rises in a spiral based on the bayonet slot, and the object lens component 2 is connected to the lens barrel component 1 more closely.

[0031] In addition, in order to make the connection between the objective lens component 2 and the lens barrel component 1 more stable, when the objective lens and the lens barrel can be connected or disassembled by rotating the connection for no more than one circle, preferably, at least two positioning protrusions are included, and the positioning protrusions correspond to the bayonet grooves one by one; further, two positioning protrusions are included, and the two positioning protrusions are symmetrical about the axis where the center of the field of view of the objective lens component 2 is located when the objective lens component 2 is connected to the lens barrel component 1; that is, in this embodiment, the two positioning protrusions are on the diameter line of the port of the objective lens component 2. Further, when more than two positioning protrusions are included, each positioning protrusion is evenly distributed around the objective lens component 2, so that the objective lens component 2 is more stable when connected to the lens barrel component 1.

[0032] Specifically, the specific process of connecting and disassembling the objective lens component 2 and the lens barrel component 1 under the limiting cooperation of the limiting mechanism 32 and the positioning mechanism 31 is as follows: when the objective lens component 2 is separated from the lens barrel component 1, based on the positioning protrusion provided by the positioning component, the entrance of the bayonet groove provided by the limiting mechanism 32 is aligned with the positioning protrusion for installation and positioning, and then the objective lens component 2 is rotated, so that under the spiral rise of the bayonet groove and the positioning of the bayonet groove and the positioning protrusion, the positioning protrusion moves along the bayonet groove, and then the objective lens component 2 is moved toward the lens barrel component 1, so that the objective lens component 2 and the lens barrel component 1 are connected to each other. until the connection between the objective lens component 2 and the lens barrel component 1 is completed, that is, the extension piece abuts against the end of one of the objective lens component 2 and the lens barrel component 1, and the connection between the objective lens component 2 and the lens barrel component 1 is completed, thereby realizing the connection between the objective lens component 2 and the lens barrel component 1; when the objective lens component 2 and the lens barrel component 1 are connected, the objective lens component 2 is rotated in the opposite direction of the connection rotation direction, so that the positioning protrusion moves along the bayonet slot and moves to the entrance of the bayonet slot, then the positioning protrusion is separated from the bayonet slot in the straight line direction where the center of the objective lens field of view is located, and then the objective lens component 2 is separated from the lens barrel component 1, thereby realizing the disassembly of the objective lens component 2 and the lens barrel component 1.

[0033] Furthermore, when the objective lens component 2 is connected to the lens barrel component 1, since they are limited by the bayonet groove, the positioning protrusion is prone to movement of the connection position in the bayonet groove during transportation or when the microscope is shaken. Therefore, it is necessary to lock the connection between the objective lens component 2 and the lens barrel component 1 to prevent the positioning protrusion from detaching from the bayonet groove. Therefore, an objective lens disassembly and replacement device applied to a microscope includes a locking mechanism 4, which locks the connection between the objective lens component 2 and the lens barrel component 1.

[0034] like Figure 2As shown, the locking mechanism 4 comprises a telescopic member 41 and a clamping portion 42 which are arranged on the objective lens component 2 and the lens barrel component 1 relatively; the telescopic member 41 and the clamping portion 42 are engaged with each other to lock the connection between the objective lens component 2 and the lens barrel component 1. That is, the telescopic member 41 is arranged on one of the objective lens component 2 and the lens barrel component 1; the clamping portion 42 is arranged on the other of the objective lens component 2 and the lens barrel component 1; in the present embodiment, the telescopic member 41 is arranged on the lens barrel component 1; the clamping portion 42 is arranged on the objective lens component 2.

[0035] Specifically, Figure 4 As shown, in this embodiment, the telescopic member 41 controls the extension and retraction of the telescopic member 41 through the dial button 412 matched therewith, and the lens barrel component 1 is provided with a moving groove matched with the dial button 412. The dial button 412 moves in the moving groove provided on the lens barrel component 1, thereby driving the telescopic rod 411 to perform the telescopic action, and the telescopic rod 411 is fixedly connected to the dial button 412; in addition, the engaging portion 42 includes a locking groove engaged with the telescopic member 41. Further, in one embodiment, as Figure 5 As shown, the telescopic member 41 is composed of an elastic member 413 and a telescopic rod 411, one end of the elastic member 413 is connected to the telescopic rod 411, and the other end is connected to the lens barrel component 1 in a groove provided in the lens barrel component 1; when the elastic member 413 is compressed, the elastic member 413 is compressed, and the telescopic rod 411 is in a contracted state; when the elastic member 413 is released, that is, when the elastic member 413 is in a normal state, the telescopic rod 411 is in an extended state. The compression and release of the elastic member 413 are performed by the dial button 412, and the elastic member 413 can be, but is not limited to, a spring.

[0036] The use process of the locking mechanism 4 during the connection or disassembly process of the objective lens component 2 and the lens barrel component 1 is as follows: during the connection process of the objective lens component 2 and the lens barrel component 1, the telescopic rod 411 in the locking mechanism is in a retracted state, specifically, the telescopic rod 411 contacts the end of the objective lens component 2, and when the distance between the objective lens component 2 and the lens barrel component 1 is reduced, the telescopic rod 411 is resisted by the objective lens component 2, thereby compressing the elastic member 413 connected to the telescopic rod 411 so that the telescopic rod 411 is in a retracted state; when the objective lens component 2 and the lens barrel component 1 are connected, the telescopic rod 411 in the locking mechanism is in a released state, specifically, when the objective lens component 2 and the lens barrel component 1 are connected, the position of the telescopic rod 411 corresponds to the position of the locking groove, the telescopic rod 411 enters the locking groove, and the telescopic rod 411 is in an extended state, and the range of the telescopic rod 411 is locked by the locking groove, thereby limiting the rotation of the objective lens component 2, and when the locking mechanism 4 is in a locked state, the objective lens component 2 cannot rotate. When the objective lens component 2 is to be disassembled from the lens barrel component 1, the telescopic rod 411 in the locking mechanism 4 is retracted, and the retracted telescopic rod 411 can be controlled by the dial button 412 to release the locking state of the locking mechanism, so that the objective lens component 2 can be rotated. The rotation of the objective lens component 2 separates the objective lens component 2 from the lens barrel component 1, thereby realizing the disassembly of the objective lens component 2 from the lens barrel component 1.

[0037] Another embodiment, such as Figure 6 As shown, the telescopic member 41 in the locking mechanism 4 is a member that can be telescopically moved between the objective lens component 2 and the lens barrel component 1 and is used to lock the connection state of the objective lens component 2 and the lens barrel component 1. In the specific scheme, a screw is used; then based on the connection state of the objective lens component 2 and the lens barrel component 1, the screw can cooperate with the screw based on the threaded hole provided on the lens barrel component 1 to achieve the telescopic movement of the screw, so that the screw and the locking groove of the locking part are locked and matched. Preferably, the locking groove width is greater than the width of the telescopic rod 411 in the locking mechanism 4, so that when the locking mechanism 4 is locked, the telescopic rod 411 is placed in the locking groove.

[0038] Embodiment 2

[0039] An objective lens disassembly and replacement device for a microscope constructed in the first embodiment includes an objective lens component 2 and a lens barrel component 1 connected to the objective lens component 2, and includes a limiting mechanism 32 and a positioning mechanism 31 relatively arranged on the objective lens component 2 and the lens barrel component 1; the objective lens component 2 is connected to the lens barrel component 1 based on the guiding and limiting cooperation of the positioning mechanism 31 and the limiting mechanism 32. Specifically, in this embodiment, the limiting mechanism 32 is arranged on the objective lens component 2, and the positioning mechanism 31 is arranged on the lens barrel component 1.

[0040] Specifically, the bayonet slot provided with the limiting mechanism 32 is arranged at the side position of the end of the objective lens component 2 facing the lens barrel component 1, close to the end edge. One end of the bayonet slot is arranged at the end edge of the objective lens component 2 as the entrance of the bayonet slot, and then the positioning protrusion is engaged with the bayonet slot based on the guiding limit of the bayonet slot so that the objective lens component 2 is connected to the lens barrel component 1. The bayonet slot can be arranged on the side inner wall, the side outer wall of the object connection part on the objective lens component 2, or the bayonet slot runs through the side shell. In addition, the positioning protrusion provided with the positioning mechanism 31 adopts a fixed protrusion component, and the protrusion component is adapted to the bayonet slot and can move in the bayonet slot; the protrusion component can adopt a columnar member, such as a screw, etc., which is fixed on the component and protrudes from the component surface, and the protruding part is engaged with the bayonet slot under the guiding limit of the bayonet slot; based on the connection position relationship between the objective lens component 2 and the lens barrel component 1, the position of the bayonet slot and the positioning protrusion is set according to demand. Based on the fact that the bayonet slot can be set on, including but not limited to, the side inner wall, the side outer wall of the connection part between the objective lens component 2 and the lens barrel component 1, or the bayonet slot passes through the side shell, the positioning protrusion is correspondingly set on the side outer wall, the side inner wall of the connection part between the lens barrel component 1 and the objective lens component 2.

[0041] Further, in order to make the lens barrel component 1 and the objective lens component 2 connect more closely, the bayonet slot is spiral. In the present embodiment, the bayonet slot rises in a spiral on the objective lens component 2, that is, the bayonet slot entrance position is higher than the bayonet slot terminal position in the objective lens component from top to bottom, so that the lens barrel component 1 is connected to the objective lens component 2, so that the lens barrel component 1 and the objective lens component 2 are connected more closely.

[0042] The utility model proposes an objective lens disassembly and replacement device for a microscope, wherein an objective lens component 2 is connected to a lens barrel component 1 based on the guiding and limiting cooperation of a positioning mechanism 31 and a limiting mechanism 32, and the objective lens component 2 is connected and disassembled with the lens barrel component 1 under the guiding and limiting of a bayonet groove in the limiting mechanism 32, thereby solving the problem of complicated operation of rotating multiple circles of ordinary threaded connection, and in addition, through the positioning protrusion provided in the positioning mechanism 31, the objective lens component 2 and the lens barrel component 1 can be quickly and accurately docked at a suitable connection position, so that the connection and disassembly operation of the objective lens and the lens barrel is simple and fast, and the lens can be quickly switched to reduce the operation time; at the same time, the bayonet groove rises in a spiral shape, so that the objective lens component 2 and the lens barrel component 1 are more closely connected and stable during the rotation connection process, and are not easy to fall off; in addition, through the locking mechanism 4, locking is realized when the objective lens component 2 and the lens barrel component 1 are connected, so that relative rotation and sliding between the objective lens and the lens barrel component 1 are prevented, which causes the objective lens component 2 to fall off relative to the lens barrel component 1, and the connection between the objective lens component 2 and the lens barrel component 1 is more firmly established. The overall structure of this solution is simple and can quickly and effectively connect and disassemble the lens barrel component 1 and the objective lens component 2. The overall installation and disassembly process is simple and easy to operate, while avoiding wear of the thread and increasing the service life of the device.

[0043] The above are only preferred embodiments of the utility model, but do not limit the patent scope of the utility model. Although the utility model is described in detail with reference to the above embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the above specific implementations, or replace some of the technical features with equivalents. Any equivalent structure made by using the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, is also within the scope of protection of the utility model patent.

Claims

1. An objective lens disassembly and replacement device for a microscope, comprising an objective lens component (2) and a lens barrel component (1) connected to the objective lens component (2), characterized in that: It includes a limiting mechanism (32) and a positioning mechanism (31) which are relatively arranged on the objective lens component (2) and the lens barrel component (1); The objective lens component (2) is connected to the lens barrel component (1) based on the guiding and limiting cooperation of the positioning mechanism (31) and the limiting mechanism (32); The limiting mechanism (32) is a bayonet slot on the lens barrel component (1); and the positioning mechanism (31) is a positioning protrusion on the objective lens component (2).

2. The objective lens disassembly and replacement device for a microscope according to claim 1, characterized in that: The limiting mechanism (32) is provided with a bayonet slot for guiding the limiting positioning mechanism (31).

3. The objective lens disassembly and replacement device for a microscope according to claim 2, characterized in that: The positioning mechanism (31) is provided with a positioning protrusion that cooperates with the bayonet slot to guide and limit.

4. The objective lens disassembly and replacement device for a microscope according to claim 3, characterized in that: The bayonet slot is spiral-shaped.

5. The objective lens disassembly and replacement device for a microscope according to claim 3, characterized in that: It comprises at least two positioning protrusions, and the positioning protrusions correspond to the bayonet slots one by one.

6. The objective lens disassembly and replacement device for a microscope according to claim 3, characterized in that: It comprises two positioning protrusions, and based on the connection between the objective lens component (2) and the lens barrel component (1), the two positioning protrusions are symmetrical about the axis where the visual field center of the objective lens component (2) is located.

7. The objective lens disassembly and replacement device for a microscope according to claim 1, characterized in that: It comprises a locking mechanism (4) for locking the connection between the objective lens component (2) and the lens barrel component (1).

8. The objective lens disassembly and replacement device for a microscope according to claim 7, characterized in that: The locking mechanism (4) includes a telescopic member (41) and a snap-fitting portion (42) disposed relatively on the objective lens component (2) and the lens barrel component (1); The telescopic member (41) and the locking portion (42) are engaged with each other to lock the connection between the objective lens component (2) and the lens barrel component (1).

9. The objective lens disassembly and replacement device for a microscope according to claim 8, characterized in that: The engaging portion (42) comprises a locking groove that engages with the telescopic member (41).

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