Adjustable positioning structure

Abstract

The utility model relates to an adjustable positioning structure, which comprises a positioning block and a fixed part, and further comprises a movable part, a positioning block and a positioning block, the buckling piece comprises an elastic piece and a positioning buckle, one end of the elastic piece is fixedly connected with the movable piece, the other end of the elastic piece is fixedly connected with the positioning buckle, and the positioning buckle is in sliding clamping fit with the positioning block in the deformation direction of the elastic piece; the two ends of the adjusting piece are connected with the movable piece and the fixed piece respectively, the adjusting piece drives the movable piece and the fixed piece to move relatively, and the moving direction is in the deformation direction of the elastic piece; the relative positions of the positioning block and the fixing piece are fixed in the deformation direction of the elastic piece. Through the arrangement, the objective lens converter does not need to be replaced frequently, and the equipment cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of objective lens converter, in particular to an adjustable positioning structure. Background Art

[0002] Objectives are one of the essential tools in medical imaging and other microscopic research fields. In order to quickly and clearly observe, compare and analyze the same area of ​​a sample at different magnifications, multiple different objective lenses are usually integrated into a converter, and then the user can select the appropriate objective lens according to their needs to observe and study the sample or target in more detail.

[0003] Traditional automatic objective lens converters usually use positioning blocks and elastic positioning buckles as rotation positioning mechanisms to achieve objective lens switching and accurate positioning. However, as the use time increases, the positioning blocks or elastic positioning buckles may cause positioning accuracy to decrease or even fail due to wear, reducing the reliability of the objective lens converter; replacing a new objective lens converter also increases equipment costs. Utility Model Content

[0004] In order to solve the above defects, the utility model proposes an adjustable positioning structure.

[0005] The technical solution adopted by the utility model is an adjustable positioning structure, including a positioning block and a fixed member, and also including: a movable member, which is slidably connected to the fixed member; a buckling member, which includes a spring sheet and a positioning buckle, one end of the spring sheet is fixedly connected to the movable member, and the other end is fixedly connected to the positioning buckle, and the positioning buckle is slidably engaged with the positioning block along the deformation direction of the spring sheet; an adjusting member, whose two ends are respectively connected to the movable member and the fixed member, and drives the movable member and the fixed member to move relative to each other, and the movement direction is along the deformation direction of the spring sheet; along the deformation direction of the spring sheet, the relative positions of the positioning block and the fixed member are fixed.

[0006] Preferably, the adjusting member comprises a bearing and an adjusting rod arranged along the deformation direction of the spring piece, the bearing is mounted on the fixing member, one end of the adjusting rod is plugged and fixed to the bearing, and the other end is threadedly connected to the movable member.

[0007] Preferably, a groove is provided in the middle of the movable member, and one end of the fixed member extends into the groove.

[0008] Preferably, the movable part includes a first plate, a third plate and a second plate whose ends are respectively connected to the ends of the first plate and the third plate, the first plate and the third plate are arranged on the same side of the second plate, and the first plate, the second plate and the third plate are connected in sequence to form the groove.

[0009] Preferably, the first end of the adjusting rod is threadedly connected to the third plate, the second end of the adjusting rod passes through the bearing and is plugged and fixed to the bearing, and the second end of the adjusting rod is provided with a non-circular groove, the first plate is fixedly connected to one end of the spring sheet, and the first plate and the spring sheet respectively have through holes at positions opposite to the adjusting rod.

[0010] Preferably, a guide column along the length direction of the adjusting rod is fixedly connected to one side of the fixing member, and a guide hole matching the guide column is formed on the third plate.

[0011] Preferably, a waist-shaped groove is formed at one end of the third plate away from the second plate along the length direction of the adjusting rod.

[0012] Preferably, the thickness of the first plate at one end away from the positioning buckle is smaller than the thickness of the first plate at one end close to the positioning buckle.

[0013] Preferably, one end of the positioning buckle away from the movable part extends toward the positioning block to form a snap-fitting piece, and the snap-fitting piece is concave inwardly opposite the positioning block to form a slot, and the slot is configured to be a trumpet shape with an opening width greater than a bottom width.

[0014] Preferably, the heights of the buckling pieces on both sides of the slot gradually decrease along the moving direction of the positioning block.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] When the positioning block or the positioning buckle is worn out due to long-term use, resulting in the inability to accurately and reliably engage with the positioning block and the positioning buckle, the distance between the positioning block and the positioning buckle along the deformation direction of the spring sheet can be shortened by an adjusting piece, so that the positioning buckle can accurately and stably engage with the positioning block under the elastic force of the spring sheet. The positioning effectiveness of the adjustable positioning structure is improved, and the reliability of the objective lens converter using the adjustable positioning structure is also greatly improved. There is no need to frequently replace the objective lens converter, saving equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is described in detail below with reference to the embodiments and drawings, wherein:

[0018] Figure 1 It is a schematic diagram of the overall structure of the adjustable positioning structure;

[0019] Figure 2 It is an exploded view of the adjustable positioning structure.

[0020] 110. fixing member; 111. guide column;

[0021] 120, movable part; 121, spring piece; 122, positioning buckle; 123, waist groove;

[0022] 130. Adjusting part; 131. Bearing. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be interpreted as limiting the utility model.

[0024] In one embodiment, Figure 1-2 As shown, an adjustable positioning structure is suitable for an objective lens converter and is used to achieve accurate positioning of the objective lens. The adjustable positioning structure includes a positioning block and a buckle, wherein the positioning block is arranged on the objective lens converter, and a plurality of positioning blocks are arranged, and each positioning block uniquely corresponds to an objective lens. The buckle includes a spring piece 121 and a positioning buckle 122, wherein one end of the spring piece 121 is fixedly connected to the positioning buckle 122, and the positioning buckle 122 is slidably engaged with the positioning block along the deformation direction of the spring piece 121. After the user selects the desired objective lens, the positioning block corresponding to the objective lens is slidably engaged with the positioning buckle 122, and under the elastic force of the spring piece 121, the positioning block is firmly clamped by the positioning buckle 122, thereby achieving accurate positioning of the objective lens, so that the objective lens can be used for subsequent observation, analysis, etc.

[0025] The adjustable positioning structure further comprises a fixed member 110, a movable member 120 and an adjusting member 130. The fixed member 110 is fixed on the mounting frame of the objective lens converter, the movable member 120 is slidably connected to the fixed member 110, and one end of the spring sheet 121 away from the positioning buckle 122 is fixedly connected to the movable member 120. The two ends of the adjusting member 130 are respectively connected to the movable member 120 and the fixed member 110, and the adjusting member 130 drives the movable member 120 and the fixed member 110 to move relative to each other, and the movement direction is along the deformation direction of the spring sheet 121. Because the relative positions of the positioning block and the fixed member 110 are fixed along the deformation direction of the spring sheet 121, and the positioning buckle 122 is fixed to the movable member 120 through the spring sheet 121, that is, the adjusting member 130 can indirectly change the relative positions of the positioning buckle 122 and the positioning block along the deformation direction of the spring sheet 121. Thus, when the positioning block or the positioning buckle 122 is worn out due to long-term use, resulting in the inability to accurately and reliably engage with the positioning block and the positioning buckle 122, the distance between the positioning block and the positioning buckle 122 along the deformation direction of the spring sheet 121 can be shortened by the adjusting member 130, so that the positioning buckle 122 can be accurately and stably engaged with the positioning block under the elastic force of the spring sheet 121. The positioning effectiveness of the adjustable positioning structure is improved, and the reliability of the objective lens converter using the adjustable positioning structure is also greatly improved. There is no need to frequently replace the objective lens converter, saving equipment costs.

[0026] In other embodiments, the positions of the positioning block and the positioning buckle 122 can be interchanged, and the positioning block and the positioning buckle 122 can still be slidably engaged, thereby still achieving accurate positioning of the objective lens.

[0027] In one embodiment, the adjusting member 130 includes an adjusting rod and a bearing 131, wherein the bearing 131 is mounted on the fixing member 110, one end of the adjusting rod is plugged and fixed with the bearing 131, and the other end is threadedly connected with the movable member 120, so that the distance between the fixing member 110 and the movable member 120 can be changed by rotating the adjusting rod. Specifically, the fixing member 110 is in the shape of a plate, and a through mounting hole is provided on its surface, a bearing seat is fixed in the mounting hole, and the bearing 131 is mounted on the bearing seat, and one end of the adjusting rod is plugged and fixed in the bearing 131, so that the adjusting rod can rotate relative to the fixing member 110. A thread is provided on the outer periphery of the other end of the adjusting rod, and a screw hole matching the thread is provided on the movable member 120, so that the relative position of the adjusting rod and the movable member 120 along the length direction of the adjusting rod can be changed by rotating the adjusting rod, thereby changing the relative position of the fixing member 110 and the movable member 120 along the length direction of the adjusting rod. The length direction of the adjustment rod is made the same as the deformation direction of the spring sheet 121, and the relative position of the fixed member 110 and the movable member 120 along the deformation direction of the spring sheet 121 can be changed by rotating the adjustment rod. The screw hole can be set as a precision screw hole matching the thread of the adjustment rod, so as to precisely adjust the position of the movable member 120.

[0028] In one embodiment, a groove is formed in the middle of the movable member 120, and one end of the fixed member 110 away from the mounting frame extends into the groove. The fixed member 110 is arranged in the middle of the movable member 120, that is, the fixed member 110 and the movable member 120 are integrated, which reduces the volume of the entire adjustable positioning structure, facilitates its application to the objective lens converter, saves space, and facilitates popularization and application.

[0029] In one embodiment, the movable member 120 includes a first plate, a second plate, and a third plate. The two ends of the second plate are connected to the ends of the first plate and the third plate, respectively, and the first plate and the third plate are arranged on the same side of the second plate, so that the first plate, the second plate, and the third plate are connected in sequence to form a groove, that is, a pair of side surfaces of the groove are provided with openings, and the other pair of side surfaces are the first plate and the third plate, respectively, and the bottom surface of the groove is the second plate. The four sides of the groove are not completely sealed, which can facilitate observation of the distance between the fixing member 110 and the first plate and the third plate, respectively, to avoid interference due to being too close, thereby improving the controllability of the adjustable positioning structure and avoiding extrusion damage between components.

[0030] In one embodiment, the first end of the adjusting rod is threadedly connected to the third plate, and the second end of the adjusting rod passes through the bearing 131 and is plugged and fixed to the bearing 131. A non-circular recessed groove is provided at the second end of the adjusting rod, so that the user can insert a tool such as a screwdriver into the recessed groove, rotate the adjusting rod by rotating the screwdriver, and then change the relative distance between the fixed part 110 and the movable part 120. Among them, the first plate is fixedly connected to one end of the spring 121, and the first plate and the spring 121 respectively have through holes at positions facing the adjusting rod, so that the screwdriver can be inserted into the recessed groove through the through hole, which is convenient for the user's operation.

[0031] In one embodiment, a guide post 111 is fixedly connected to one side of the fixing member 110, and the guide post 111 is arranged along the length direction of the adjusting rod, and a guide hole matching the guide post 111 is opened on the third plate. The guide post 111 can assist the adjusting rod in positioning the movement of the movable member 120, so that the movable member 120 only moves relative to the fixing member 110 along the deformation direction of the spring 121, and does not deviate or swing in other directions. In other embodiments, the guide post 111 can be designed as a pair or more according to design requirements, and the number and position of the guide holes match the guide post 111. The guide holes can be set as precision guide holes for more precise guidance.

[0032] In one embodiment, a waist-shaped groove 123 is provided at one end of the third plate away from the second plate, and the length direction of the waist-shaped groove 123 is the same as the length direction along the adjusting rod. A limiting rod is provided on the mounting frame of the objective lens converter, one end of the limiting rod is fixed on the mounting frame, and the other end of the limiting rod extends into the waist-shaped groove 123. When the movable part 120 moves up and down relative to the fixed part 110, the limiting rod slides in the waist-shaped groove 123 along the length direction of the waist-shaped groove 123. By setting the length of the waist-shaped groove 123, the displacement range of the movable part 120 can be limited, so that the movable part 120 can be prevented from excessive displacement, squeezing and damaging the fixed part 110, and the reliability of the adjustable positioning structure is improved. In other embodiments, a pair of waist-shaped grooves 123 can be symmetrically provided on the third plate, and a pair of limiting rods are provided on the mounting frame to match them, so that the limiting effect is better. The number of waist-shaped grooves 123 and limiting rods can also be set according to actual space and needs.

[0033] In one embodiment, the first plate and the positioning buckle 122 are connected by a spring sheet 121, and one end of the spring sheet 121 is fixed to the first plate. By setting the thickness of the end of the first plate away from the positioning buckle 122 to be smaller than the thickness of the end close to the positioning buckle 122, the spring sheet 121 is facilitated to undergo elastic deformation, thereby improving the positioning sensitivity of the adjustable positioning structure.

[0034] In one embodiment, the end of the positioning buckle 122 away from the movable member 120 extends toward the positioning block to form a snap-fit ​​piece, and the snap-fit ​​piece is concave at the position opposite to the positioning block to form a slot, so that the positioning block can be inserted into the slot and snap-fit ​​with the snap-fit ​​piece. The slot is set to be a trumpet-shaped slot with an opening width greater than the bottom width, so that the positioning block can slide and snap-fit ​​into the bottom of the slot, and the snap-fit ​​process is smoother, which reduces the wear between the slot and the positioning block and increases the service life of the adjustable positioning structure.

[0035] In one embodiment, the height of the snap-fitting pieces on both sides of the card slot gradually decreases along the moving direction of the positioning block, that is, when the positioning block approaches the card slot, it can slowly apply longitudinal pressure to the snap-fitting pieces, so that the spring piece 121 can slowly deform, and at the same time, the lateral extrusion between the positioning block and the snap-fitting pieces is reduced, which facilitates the positioning block to slide and snap into the card slot smoothly.

[0036] In the description of this specification, if the terms "embodiment one", "this embodiment", "in an embodiment" and the like appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model or the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example; moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in an appropriate manner.

[0037] In the description of this specification, the terms "connect", "install", "fix", "set", "have", etc. are all understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In the description of this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0039] The above description of the embodiments is to facilitate ordinary technicians in the technical field to understand and apply the technology of this case. People familiar with the technology in this field can obviously make various modifications to these examples easily and apply the general principles described here to other embodiments without creative work. Therefore, this case is not limited to the above embodiments. Modifications to the following situations should all be within the scope of protection of this case: ① A new technical solution based on the technical solution of the utility model and combined with existing common knowledge, the technical effect produced by the new technical solution does not exceed the technical effect of the utility model; ② The equivalent replacement of some features of the technical solution of the utility model by using known technology, the technical effect produced is the same as the technical effect of the utility model; ③ The technical solution of the utility model can be expanded based on the technical solution of the utility model, and the substantive content of the expanded technical solution does not exceed the technical solution of the utility model; ④ The equivalent transformation made by using the contents of the specification and drawings of the utility model is directly or indirectly applied to other related technical fields.

Claims

1. An adjustable positioning structure, characterized in that: Including positioning blocks and fixings, and also includes: A movable part, which is slidably connected to the fixed part; A buckle member, comprising a spring sheet and a positioning buckle, wherein one end of the spring sheet is fixedly connected to the movable member, and the other end is fixedly connected to the positioning buckle, and the positioning buckle is slidably engaged with the positioning block along the deformation direction of the spring sheet; An adjusting member, two ends of which are respectively connected to the movable member and the fixed member, and drives the movable member and the fixed member to move relative to each other, and the movement direction is along the deformation direction of the spring sheet; Along the deformation direction of the elastic sheet, the relative positions of the positioning block and the fixing member are fixed.

2. The adjustable positioning structure according to claim 1, characterized in that: The adjusting member comprises a bearing and an adjusting rod arranged along the deformation direction of the spring sheet, the bearing is mounted on the fixing member, one end of the adjusting rod is plugged and fixed to the bearing, and the other end is threadedly connected to the movable member.

3. The adjustable positioning structure according to claim 2, characterized in that: A groove is provided in the middle of the movable part, and one end of the fixed part extends into the groove.

4. The adjustable positioning structure according to claim 3, characterized in that: The movable part includes a first plate, a third plate and a second plate whose ends are respectively connected to the ends of the first plate and the third plate. The first plate and the third plate are arranged on the same side of the second plate. The first plate, the second plate and the third plate are connected in sequence to form the groove.

5. The adjustable positioning structure according to claim 4, characterized in that: The first end of the adjusting rod is threadedly connected to the third plate, the second end of the adjusting rod passes through the bearing and is plugged and fixed to the bearing, and the second end of the adjusting rod is provided with a non-circular groove, the first plate is fixedly connected to one end of the spring sheet, and the first plate and the spring sheet respectively have through holes at positions facing the adjusting rod.

6. The adjustable positioning structure according to claim 5, characterized in that: A guide column along the length direction of the adjusting rod is fixedly connected to one side of the fixing member, and a guide hole matching the guide column is formed on the third plate.

7. The adjustable positioning structure according to claim 5, characterized in that: A waist-shaped groove is formed at one end of the third plate away from the second plate along the length direction of the adjusting rod.

8. The adjustable positioning structure according to claim 5, characterized in that: The thickness of the first plate at one end away from the positioning buckle is smaller than the thickness of the first plate at one end close to the positioning buckle.

9. The adjustable positioning structure according to claim 1, characterized in that: One end of the positioning buckle away from the movable part extends toward the positioning block to form a buckling piece, and the buckling piece is concave inwardly opposite to the positioning block to form a slot, and the slot is configured as a trumpet shape with an opening width greater than a bottom width.

10. The adjustable positioning structure according to claim 9, characterized in that: The heights of the buckling pieces on both sides of the slot gradually decrease along the moving direction of the positioning block.

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