Fixing tool for non-thread lens frame

Abstract

The utility model belongs to the technical field of lens detection, and discloses a fixing tool for a thread-free lens frame, the fixing tool comprises a substrate, bases and a gland, the substrate is detachably provided with a plurality of bases, the center of the top of each base is provided with an accommodating cavity, the outer wall of the top of each base is provided with an external thread, the bottom end of the thread-free lens frame is inserted into the accommodating cavity, and the gland is arranged on the base. The circular ring of the outer wall of the thread-free lens frame is borne on the top end face of the base; internal threads are arranged on the internal thread walls of the glands, through holes are formed in the centers of the top end pressing walls of the glands, the glands are arranged on the tops of the bases in a sleeving mode, the internal thread walls are in threaded connection with the outer walls of the bases, the top end pressing walls can tightly press the circular rings to the top end faces of the bases, and the top end of the thread-free lens frame penetrates through the through holes. According to the utility model, the non-thread lens frame is locked on the base in a thread locking manner, so that shaking in the detection process is avoided, and detection errors are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lens detection, in particular to a fixing tool for a lens frame without screw threads. Background Art

[0002] With the rapid development of the optical industry, various optical lenses have emerged. Due to certain technical requirements, the outer wall of the frame of some optical lenses is not provided with screw threads but with rings. The fixing fixtures in the prior art are all set for frames with screw threads. For example, the prior art with application number CN201821773320.0 and application name lens test fixture fixes the lens to be tested by adsorption, and the vacuum generating device makes the adsorption hole generate continuous adsorption force to ensure the stability of lens adsorption.

[0003] However, when a large external force acts directly on the frame, it is still possible that the frame will shake, shift, or have other problems. For example, when a three-dimensional probe is used for detection, the probe directly contacts the frame and applies thrust to the frame. The frame may shift, resulting in a large detection error. Utility Model Content

[0004] One purpose of the utility model is to provide a fixing fixture, which locks a lens frame without screw threads to a base in the form of thread locking, so as to avoid shaking during the detection process and reduce detection errors.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A fixing fixture for a lens frame without screw threads, the fixing fixture comprising:

[0007] substrate;

[0008] A base, a plurality of the bases are detachably mounted on the substrate, a receiving cavity is provided at the top center of the base, an external thread is provided on the top outer wall of the base, the bottom end of the non-screw thread lens frame is inserted into the receiving cavity, and a circular ring on the outer wall of the non-screw thread lens frame is supported on the top end face of the base;

[0009] A pressure cap, wherein the internal threaded wall of the pressure cap is provided with an internal thread, a through hole is provided at the center of the top pressure wall of the pressure cap, the pressure cap is sleeved on the top of each of the bases, the internal threaded wall is threadedly connected to the outer wall of the base, the top pressure wall can press the ring tightly against the top end face of the base, and the top of the screwless lens frame passes through the through hole.

[0010] As an optional technical solution, a first annular groove is provided inside the gland, the first annular groove is located between the top pressure wall and the internal thread wall, and the inner diameter of the first annular groove is larger than the outer diameter of the top of the base.

[0011] As an optional technical solution, the depth of the first annular groove along the Z-axis direction is greater than or equal to the width of the circular ring along the Z-axis direction.

[0012] As an optional technical solution, the fixing fixture further includes a screw, the base plate is provided with a connecting hole, the bottom of the base is provided with a threaded hole, and the screw passes through the connecting hole and is threadedly connected to the threaded hole.

[0013] As an optional technical solution, a plurality of limiting grooves are arranged in an array on the substrate, the bottom of each limiting groove is provided with the connecting hole, and each limiting groove accommodates one of the bases.

[0014] As an optional technical solution, the inner diameter of the limiting groove is equal to the outer diameter of the bottom of the base.

[0015] As an optional technical solution, the port edge of the limiting groove and the circumferential edge of the bottom of the base are both chamfered.

[0016] As an optional technical solution, the top of the base is a bearing part, the bottom of the base is a connecting part, the external thread and the accommodating cavity are both arranged on the bearing part, the connecting part is detachably connected to the substrate, and a second annular groove is provided at the root of the bearing part.

[0017] As an optional technical solution, the inner edge of the bottom end of the internal thread wall is chamfered.

[0018] The beneficial effects of the utility model are:

[0019] The fixing fixture provided by the utility model is used for a lens frame without screw threads. The outer wall of the lens frame without screw threads is provided with a circular ring. The fixing fixture comprises a base plate, a pedestal and a pressure cover. When the lens frame without screw threads needs to be fixed, the lens frame without screw threads is placed on the top of the pedestal, the bottom end of the lens frame without screw threads is inserted into the accommodating cavity, the circular ring on the outer wall of the lens frame without screw threads is supported on the top end face of the pedestal, at this time, the pressure cover is sleeved on the top of the pedestal, and the pressure cover is rotated, the internal thread wall is threadedly connected with the outer wall of the pedestal, and the top pressure wall can press the circular ring against the top end face of the pedestal, so as to fix the lens frame without screw threads; a through hole is provided at the center of the top pressure wall of the pressure cover, the top end of the lens frame without screw threads passes through the through hole, and the detection probe can pass through the through hole and detect the lens frame without screw threads. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described in detail below according to the accompanying drawings and embodiments;

[0021] Figure 1 It is a structural schematic diagram of the fixing tool described in the embodiment;

[0022] Figure 2 An exploded view of the fixing tool described in the embodiment;

[0023] Figure 3 is a cross-sectional view of the fixing tool described in the embodiment;

[0024] Figure 4 for Figure 3 A partial enlarged view of position A in the middle.

[0025] In the figure:

[0026] 100. Lens frame without screw thread; 101. Ring;

[0027] 1. Base plate; 11. Connection hole; 12. Limiting groove;

[0028] 2. base; 21. accommodating cavity; 22. threaded hole; 23. bearing portion; 24. connecting portion; 25. second annular groove;

[0029] 3. gland; 31. internal thread wall; 32. top pressure wall; 33. through hole; 34. first annular groove;

[0030] 4. Screws. DETAILED DESCRIPTION

[0031] In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. 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. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0036] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0037] like Figures 1 to 4 As shown, the present embodiment provides a fixing tool for a lens frame 100 without a screw thread, and the fixing tool comprises a substrate 1, a base 2 and a pressure cover 3; a plurality of bases 2 are detachably mounted on the substrate 1, a receiving cavity 21 is provided at the top center of the base 2, an external thread is provided on the top outer wall of the base 2, the bottom end of the lens frame 100 without a screw thread is inserted into the receiving cavity 21, and a circular ring 101 on the outer wall of the lens frame 100 without a screw thread is supported on the top end face of the base 2; an internal thread wall 31 of the pressure cover 3 is provided with an internal thread, a through hole 33 is provided at the center of the top pressure wall 32 of the pressure cover 3, a pressure cover 3 is sleeved on the top of each base 2, the internal thread wall 31 is threadedly connected to the outer wall of the base 2, the top pressure wall 32 can press the circular ring 101 against the top end face of the base 2, and the top of the lens frame 100 without a screw thread passes through the through hole 33.

[0038] Specifically, when it is necessary to fix the lens frame 100 without screw threads, the lens frame 100 without screw threads is placed on the top of the base 2, and the bottom end of the lens frame 100 without screw threads is inserted into the accommodating cavity 21. The accommodating cavity 21 pre-fixes the lens frame 100 without screw threads, and the ring 101 on the outer wall of the lens frame 100 without screw threads is supported on the top end face of the base 2. At this time, the pressure cover 3 is sleeved on the top of the base 2, and the pressure cover 3 is rotated. The internal thread wall 31 is threadedly connected with the outer wall of the base 2, and the top pressure wall 32 can press the ring 101 tightly against the top end face of the base 2, thereby fixing the lens frame 100 without screw threads; a through hole 33 is provided in the center of the top pressure wall 32 of the pressure cover 3, and the top of the lens frame 100 without screw threads passes through the through hole 33, and the detection probe can pass through the through hole 33 and detect the lens frame 100 without screw threads.

[0039] In this embodiment, a pressure cap 3 is threadedly connected to the base 2, which can quickly lock or release the screwless lens frame 100, thereby improving the disassembly and assembly speed of the screwless lens frame 100. The pressure cap 3 is used to press the screwless lens frame 101. When the thickness of the ring 101 along the Z-axis direction changes, for example, when replacing a screwless lens frame 100 of different specifications, the pressure of the top pressure wall 32 on the ring 101 is adjusted by rotating the pressure cap 3, thereby ensuring that the screwless lens frame 100 is pressed against the base 2 and the ring 101 is not damaged.

[0040] In this embodiment, the base 2 on the substrate 1 is provided with three rows and four columns, and twelve screw-free lens frames 100 can be fixed at one time. The installation height of each base 2 on the substrate 1 is the same, so that the position height of each screw-free lens frame 100 is consistent. Multiple screw-free lens frames 100 can be detected at one time, reducing detection errors.

[0041] Optionally, a first annular groove 34 is provided inside the gland 3 , and the first annular groove 34 is located between the top compression wall 32 and the internal thread wall 31 , and the inner diameter of the first annular groove 34 is greater than the outer diameter of the top of the base 2 .

[0042] When the specifications of the ring 101 are different, for example, the outer diameter of the ring 101 increases, the first ring groove 34 can avoid the ring 101; the top pressure wall 32 is pressed tightly against the ring 101, and if the rotational force is continuously applied to the pressure cover 3, the top pressure wall 32 can be elastically deformed within a preset range.

[0043] Optionally, the depth of the first annular groove 34 along the Z-axis direction is greater than or equal to the width of the circular ring 101 along the Z-axis direction.

[0044] Optionally, the fixing tool further includes a screw 4, the base plate 1 is provided with a connection hole 11, the bottom of the base 2 is provided with a threaded hole 22, and the screw 4 passes through the connection hole 11 and is threadedly connected to the threaded hole 22. When the base 2 needs to be replaced, the screw 4 is removed to separate the base 2 from the base plate 1. When the base 2 needs to be locked, the screw 4 is passed through the connection hole 11 and is threadedly connected to the threaded hole 22 to prevent the base 2 from rotating or deviating relative to the base plate 1.

[0045] Optionally, a plurality of limiting grooves 12 are arranged in an array on the substrate 1 , a connecting hole 11 is provided at the bottom of each limiting groove 12 , and each limiting groove 12 accommodates a base 2 .

[0046] Optionally, the inner diameter of the limiting groove 12 is equal to the outer diameter of the bottom of the base 2, and the outer wall of the bottom of the base 2 contacts the inner wall of the limiting groove 12, so that the base 2 is pre-positioned.

[0047] Optionally, the port edge of the limiting groove 12 and the peripheral edge of the bottom of the base 2 are both chamfered to avoid cracks caused by hard contact.

[0048] Optionally, the top of the base 2 is a bearing portion 23, the bottom of the base 2 is a connecting portion 24, the external thread and the accommodating cavity 21 are both provided on the bearing portion 23, the connecting portion 24 is detachably connected to the base plate 1, and a second annular groove 25 is provided at the root of the bearing portion 23. When the clamping mechanism clamps the gland 3 and drives the gland 3 to rotate, the second annular groove 25 can avoid the protruding part of the clamping structure.

[0049] Optionally, the inner edge of the bottom end of the internal thread wall 31 is chamfered to avoid cracks caused by hard contact.

[0050] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A fixing device for a lens frame without screw threads, characterized in that: The fixed tooling comprises: base(1); A base (2), a plurality of the bases (2) are detachably mounted on the substrate (1), a receiving cavity (21) is provided at the top center of the base (2), an external thread is provided on the top outer wall of the base (2), the bottom end of the non-screw thread lens frame (100) is inserted into the receiving cavity (21), and a circular ring (101) on the outer wall of the non-screw thread lens frame (100) is supported on the top end surface of the base (2); A pressure cover (3), wherein the internal thread wall (31) of the pressure cover (3) is provided with an internal thread, and the center of the top pressure wall (32) of the pressure cover (3) is provided with a through hole (33), and the top of each base (2) is sleeved with the pressure cover (3), the internal thread wall (31) is threadedly connected to the outer wall of the base (2), and the top pressure wall (32) can press the ring (101) against the top end face of the base (2), and the top of the screwless lens frame (100) passes through the through hole (33).

2. The fixing tool according to claim 1, characterized in that: A first annular groove (34) is provided inside the pressure cover (3), and the first annular groove (34) is located between the top pressure wall (32) and the internal thread wall (31), and the inner diameter of the first annular groove (34) is greater than the outer diameter of the top of the base (2).

3. The fixing tool according to claim 2, characterized in that: The depth of the first annular groove (34) along the Z-axis direction is greater than or equal to the width of the circular ring (101) along the Z-axis direction.

4. The fixing tool according to claim 1, characterized in that: The fixing fixture further comprises a screw (4), the base plate (1) is provided with a connecting hole (11), the bottom of the base (2) is provided with a threaded hole (22), and the screw (4) passes through the connecting hole (11) and is threadedly connected to the threaded hole (22).

5. The fixing tool according to claim 4, characterized in that: A plurality of limiting grooves (12) are arranged in an array on the base plate (1), the bottom of each limiting groove (12) is provided with the connecting hole (11), and each limiting groove (12) accommodates one of the bases (2).

6. The fixing tool according to claim 5, characterized in that: The inner diameter of the limiting groove (12) is equal to the outer diameter of the bottom of the base (2).

7. The fixing tool according to claim 6, characterized in that: The port edge of the limiting groove (12) and the circumferential edge of the bottom of the base (2) are both chamfered.

8. The fixing tool according to claim 1, characterized in that: The top of the base (2) is a bearing portion (23), the bottom of the base (2) is a connecting portion (24), the external thread and the accommodating cavity (21) are both arranged on the bearing portion (23), the connecting portion (24) is detachably connected to the base plate (1), and a second annular groove (25) is arranged at the root of the bearing portion (23).

9. The fixing tool according to claim 1, characterized in that: The inner edge of the bottom end of the internal thread wall (31) is chamfered.

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