Fixture

Abstract

The utility model relates to the technical field of element clamping, and provides a clamp. The fixture comprises a base, a cover plate and a central shielding component, a coating hole is formed in the base, a landing edge is arranged on the inner wall of the coating hole, the coating hole and the landing edge are matched to define a limiting space, and the limiting space is used for limiting the optical element; the cover plate is arranged on one side of the base and is used for shielding the back surface of the optical element; the central shielding part is arranged on the cover plate, a first end of the central shielding part extends towards the base and penetrates through a non-coating hole in the middle of the optical element, and a shielding piece is arranged at the first end and used for sealing and covering the non-coating hole. According to the utility model, the defect that in the prior art, when part of optical elements are coated, the non-coated hole domain of the optical elements cannot be protected is overcome, and when the optical elements are coated, the non-coated holes and other non-coated areas can be protected at the same time.

Description

Technical Field

[0001] This utility model relates to the field of component clamping technology, and in particular to a clamp. Background Technology

[0002] With the development of high-end optical system applications, the precision requirements for optical components are becoming increasingly stringent. These precision requirements involve a variety of parameters, especially for coated products such as lenses, which involve multiple requirements for the coating layers. The precision requirements for coatings in high-end optical components also vary across different fields and applications. Optical coating involves depositing one or more layers of material onto the surface of an optical component to alter its optical properties or improve its optical performance.

[0003] When coating optical components, fixtures are needed to hold them in place. Since some optical components have non-coated areas on the center and back of the coated surface, it is very important to protect these non-coated areas when coating such optical components.

[0004] Therefore, there is an urgent need to design a fixture that can coat such optical elements while protecting the uncoated areas. Utility Model Content

[0005] This utility model provides a clamp to solve the defect in the prior art that it is impossible to protect the non-coated aperture area when coating some optical elements, so that the non-coated aperture and other non-coated areas can be protected at the same time as coating the optical element.

[0006] This utility model provides a clamp, including:

[0007] The base has a coating hole, and the inner wall of the coating hole has an overlap. The coating hole and the overlap cooperate to form a limiting space, which is used to limit optical elements.

[0008] A cover plate is disposed on one side of the base, and the cover plate is used to cover the back of the optical element;

[0009] A central blocking component is provided on the cover plate. The first end of the central blocking component extends toward the base and passes through the non-coated hole in the middle of the optical element. The first end of the central blocking component is provided with a blocking member, which is used to cover the non-coated hole.

[0010] According to the present invention, the cover plate is disposed on one side of the base via multiple connecting components;

[0011] The multiple connecting components are spaced apart;

[0012] A space is provided between the cover plate and the base.

[0013] According to the present invention, a clamp is provided, the connecting component comprising:

[0014] A first connector, the first end of which penetrates the cover plate, and the second end of which penetrates the base;

[0015] At least two first locking members, one of which cooperates with the first connector to limit the cover plate to a first end of the first connector, and the other of which cooperates with the first connector to limit the base to a second end of the first connector.

[0016] According to the clamp provided by this utility model, the first connecting member includes:

[0017] A limiting segment, wherein the diameter of the limiting segment is larger than the diameter of the limiting hole on the cover plate and the base;

[0018] Two connecting segments are respectively located at both ends of the limiting segment, and the two connecting segments pass through the limiting holes on the cover plate and the base in a one-to-one correspondence.

[0019] According to the clamp provided by this utility model, the central blocking component further includes:

[0020] The second connector passes through the cover plate, the non-coated hole, and the shielding member in sequence.

[0021] At least two second locking members, one of which limits the shielding member to the non-coated hole, and the other of which limits the second connector to the cover plate.

[0022] According to the present invention, the outer periphery of the blocking member is chamfered.

[0023] According to the present invention, the width of the overlap is smaller than the width of the edge located at the edge of the optical element.

[0024] According to the present invention, both the base and the cover plate are flat structures.

[0025] According to the present invention, the diameter of the cover plate is larger than the diameter of the coating hole.

[0026] According to the present invention, the shape of the shielding member is adapted to the shape of the non-coated hole.

[0027] The clamp provided by this utility model can radially limit the optical element through the limiting space formed by the coating hole of the base and the overlapping edge, preventing the optical element from shifting during the coating process. The cover plate can shield the back of the optical element, preventing the coating material from depositing on the back of the optical element. The shielding component of the central shielding member can cover the non-coating hole of the optical element, preventing the coating material from entering the non-coating hole. This structure can simultaneously achieve the limiting of the optical element and the protection of the non-coating area, improving the coating quality and efficiency. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is an exploded view of the clamp provided by this utility model;

[0030] Figure 2 This is an assembly drawing of the clamp provided by this utility model;

[0031] Figure 3 This is a schematic diagram of the structure of the base of the clamp provided by this utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the shielding component of the clamp provided by this utility model;

[0033] Figure 5 This is a schematic diagram of the structure of the optical element provided by this utility model.

[0034] Figure label:

[0035] 100: Base; 110: Coating hole; 120: Edge overlap;

[0036] 200: Cover plate;

[0037] 300: Connecting component; 310: First connecting member; 311: Limiting section; 312: Connecting section; 320: First locking member;

[0038] 400: Center blocking component; 410: Second connecting component; 420: Blocking component; 421: Chamfer; 430: Second locking component;

[0039] 500: Optical element; 510: Coated area; 520: Uncoated hole; 530: Edge. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0041] Some optical elements 500 have a non-coated hole 520 in the center, and a coated area 510 is arranged in a ring around the outer periphery of the non-coated hole 520. The outer periphery of the non-coated hole 520 also has an edge 530 for placing the optical element 500. The back side of such optical elements and the non-coated hole 520 are both non-coated areas, which need to be protected during coating. To solve this problem, this invention provides a novel clamp that can both limit the position of the optical element and protect its non-coated area during coating. The following describes the process in conjunction with... Figures 1-5 Describe the structure and working principle of this utility model.

[0042] Reference Figures 1 to 3 The present invention provides a clamp comprising a base 100, a cover plate 200, and a central blocking component 400. The base 100 has a coating hole 110, and the inner wall of the coating hole 110 has an overlap 120. The coating hole 110 and the overlap 120 cooperate to form a limiting space, which is used to limit the optical element 500. The cover plate 200 is located on one side of the base 100 and is used to block the back of the optical element 500. The central blocking component 400 is located on the cover plate 200. The first end of the central blocking component 400 extends towards the base 100 and penetrates through the non-coated hole 520 in the middle of the optical element 500. The first end has a blocking member 420, and the outer periphery of the blocking member 420 has a chamfer 421. The blocking member 420 is used to cover the non-coated hole 520.

[0043] In the above structure, the limiting space formed by the coating hole 110 of the base 100 and the overlap 120 can radially limit the optical element 500, preventing displacement of the optical element 500 during the coating process. The cover plate 200 can shield the back of the optical element 500, preventing coating material from depositing on the back of the optical element 500. The shielding member 420 of the central shielding member 400 can cover the non-coating hole 520 of the optical element 500, preventing coating material from entering the non-coating hole 520. This structure can simultaneously achieve the limiting of the optical element 500 and the protection of the non-coating area, improving coating quality and efficiency.

[0044] In some possible embodiments, the base 100 and the cover plate 200 can be connected by bolts, with the bolts passing through through holes in the cover plate 200 and engaging with threaded holes in the base 100 for fixation. The base 100 and the cover plate 200 can also be connected by snap-fit ​​connections, with the edge of the base 100 having a slot and the edge of the cover plate 200 having a snap-fit ​​that engages with the slot. The central blocking component 400 and the cover plate 200 can be connected by threads, with the second end of the central blocking component 400 having external threads and the center hole of the cover plate 200 having internal threads. The central blocking component 400 and the cover plate 200 can also be connected by an interference fit, with the second end of the central blocking component 400 having a flange and the center hole of the cover plate 200 having a groove that engages with the flange. The blocking member 420 and the first end of the central blocking component 400 can be fixed by welding, or the blocking member 420 can be fixed to the first end of the central blocking component 400 by a threaded connection.

[0045] In some other possible embodiments, the base 100 may have multiple coating holes 110, and the inner wall of each coating hole 110 may have an overlap 120. The multiple coating holes 110 and the overlap 120 can cooperate to form multiple limiting spaces for limiting multiple optical elements 500. The cover plate 200 may have multiple central blocking components 400 corresponding to the multiple coating holes 110. The first end of each central blocking component 400 may have a blocking element 420 for sealing the non-coating hole 520 of the corresponding optical element 500. The edge of the base 100 may have a positioning pin, and the edge of the cover plate 200 may have a positioning hole that cooperates with the positioning pin to ensure the alignment of the cover plate 200 and the base 100.

[0046] Reference Figure 1 and Figure 2 In some embodiments of this utility model, the cover plate 200 is disposed on one side of the base 100 by a plurality of connecting parts 300; the plurality of connecting parts 300 are spaced apart; and a space is provided between the cover plate 200 and the base 100.

[0047] In the above structure, the connecting component 300 can be bolted together. The bolt passes through the through hole on the cover plate 200 and engages with the threaded hole on the base 100 to secure it, maintaining a fixed distance between the cover plate 200 and the base 100. Alternatively, the connecting component 300 can be a height-adjustable support structure. Both ends of the support are threaded; one end is threaded to the cover plate 200, and the other end is threaded to the base 100. The distance between the cover plate 200 and the base 100 can be adjusted by rotating the support. Furthermore, the connecting component 300 can employ a flexible snap-fit ​​structure. The edge of the cover plate 200 has a snap-fit, and the edge of the base 100 has a slot. The snap-fit ​​and slot engage to secure the component, while the elastic deformation provides cushioning, preventing rigid contact damage to the optical element 500.

[0048] In the above structure, multiple connecting components 300 are spaced apart, forming a stable support structure between the cover plate 200 and the base 100, ensuring that the cover plate 200 does not shift or deform during the coating process. The uniform distribution of the connecting components 300 balances the force, reduces local stress concentration, and improves the stability of the coating process. This structure not only ensures the accurate positioning of the optical element 500 but also effectively protects the non-coated areas, improving coating uniformity and yield.

[0049] In some possible embodiments, the connecting component 300 may be provided with a positioning structure, such as a positioning boss at the bottom of the connecting component 300 and a matching positioning groove on the base 100, to ensure the alignment accuracy between the cover plate 200 and the base 100. The connecting component 300 may be made of a material with low thermal conductivity to reduce heat conduction during the coating process and prevent deformation of the optical element 500 due to temperature changes. In addition, the distance between the cover plate 200 and the base 100 can be adapted by connecting components 300 of different heights to accommodate optical elements 500 of different thicknesses.

[0050] Reference Figure 1 In some embodiments of this utility model, the connecting component 300 includes a first connecting member 310 and two first locking members 320. The first end of the first connecting member 310 penetrates the cover plate 200, and the second end of the first connecting member 310 penetrates the base 100; one first locking member 320 cooperates with the first connecting member 310 to limit the cover plate 200 to the first end of the first connecting member 310, and the other first locking member 320 cooperates with the first connecting member 310 to limit the base 100 to the second end of the first connecting member 310.

[0051] Specifically, the first connecting member 310 can adopt a threaded rod structure, with external threads at both the first and second ends. Two first locking members 320 are nuts, which are screwed onto the two ends of the threaded rod to fix the cover plate 200 and the base 100. Alternatively, the first connecting member 310 can adopt a stepped shaft structure, with a shoulder at the first end. The first locking member 320 is a retaining ring, which engages with the retaining groove of the first connecting member 310 and abuts against the cover plate 200. The second end is fixed in the same way. Furthermore, the first connecting member 310 can adopt a pin structure with an elastic buckle, with an elastic retaining ring engaging with the annular groove at the end of the first connecting member 310 to achieve axial positioning.

[0052] In this embodiment, the first connector 310 penetrates the cover plate 200 and the base 100, and is bidirectionally fixed by two first locking members 320, ensuring the relative position between the cover plate 200 and the base 100 is stable. The cooperation between the first locking member 320 and the first connector 310 can prevent loosening caused by vibration during the coating process, improving structural reliability. This connection method is easy to disassemble and adjust, can adapt to optical elements 500 of different thicknesses, and avoids stress concentration problems caused by rigid fixing, ensuring the positioning accuracy of the optical element 500 during the coating process.

[0053] In some possible embodiments, the first connector 310 may be equipped with a length adjustment mechanism. For example, the first connector 310 may employ a combination of a double-ended stud and an adjusting nut. By rotating the adjusting nut, the effective length of the first connector 310 can be changed to accommodate cover plates 200 and base 100 with different spacing. The first locking member 320 may be an anti-loosening nut or a locking nut with a nylon insert to prevent vibration during the coating process from causing the connection to loosen. In addition, the middle section of the first connector 310 may be equipped with a heat insulation sleeve to reduce the impact of heat conduction during the coating process on the optical element 500. This configuration improves the adaptability and stability of the device, making it suitable for coating requirements under different process conditions, while also enhancing long-term reliability.

[0054] Reference Figure 1 In some embodiments of this utility model, the first connecting member 310 includes a limiting section 311 and connecting sections 312 disposed at both ends of the limiting section 311. The diameter of the limiting section 311 is larger than the limiting holes on the cover plate 200 and the base 100; the two connecting sections 312 pass through the limiting holes on the cover plate 200 and the base 100 in a one-to-one correspondence.

[0055] Specifically, the limiting section 311 can adopt a cylindrical structure with a diameter larger than the diameter of the upper limiting hole in the cover plate 200 and the base 100, thereby controlling the distance between the cover plate 200 and the base 100 through axial limiting. The connecting section 312 can be provided with external threads, and the first locking member 320 is a matching nut, which, when tightened, presses against the cover plate 200 or the base 100 to achieve fixation. The limiting section 311 can also adopt a polygonal structure, with the connecting section 312 being a smooth shaft section and the first locking member 320 being an elastic clamp, which achieves fixation by radially deforming and clamping the connecting section 312. In addition, the limiting section 311 can be provided with an annular groove, and the end of the connecting section 312 can be provided with a radial through hole, with the first locking member 320 being a cotter pin, which passes through the through hole to prevent detachment.

[0056] In this embodiment, the diameter design of the limiting segment 311 ensures that the cover plate 200 and the base 100 maintain a constant distance, preventing the optical element 500 from being squeezed. The connecting segment 312 passes through the limiting hole and is locked by the first locking member 320, forming a stable three-point support structure and improving overall rigidity. This structure ensures assembly accuracy through mechanical limiting, and the limiting segment 311 also serves as an axial positioning element, preventing positional displacement due to vibration during the coating process. The detachable design of the connecting segment 312 and the first locking member 320 facilitates maintenance and replacement of the optical element 500, improving production efficiency.

[0057] In some possible embodiments, the limiting section 311 may be equipped with heat dissipation fins to increase the surface area and accelerate heat dissipation during the coating process. The connecting section 312 may adopt a segmented structure with an adjustment thread in the middle, allowing the effective length to be changed by rotation to accommodate optical elements 500 of different specifications. The end face of the limiting section 311 may be equipped with a positioning boss that mates with the positioning grooves of the cover plate 200 and the base 100 to improve the alignment accuracy during assembly. This design enhances thermal management capabilities, expands the applicability of the device, and the optimized positioning structure further improves the coating position accuracy, ensuring stability during mass production.

[0058] Reference Figure 1 In some embodiments of this utility model, the central blocking component 400 further includes a second connecting member 410 and two second locking members 430. The second connecting member 410 passes through the cover plate 200, the non-coating hole 520 and the blocking member 420 in sequence. One of the second locking members 430 limits the blocking member 420 to one side of the non-coating hole 520, and the other second locking member 430 limits the second connecting member 410 to the cover plate 200.

[0059] Specifically, the second connecting member 410 can adopt a threaded rod structure with external threads at both ends. Two second locking members 430 are matching nuts, which are screwed onto the two ends of the threaded rod for fixation. Alternatively, the second connecting member 410 can adopt a stepped shaft design with a positioning shoulder in the middle. One second locking member 430 is an elastic retaining ring that engages with the annular groove of the second connecting member 410 and abuts against the blocking member 420. The other second locking member 430 is a locking nut that screws onto the threaded end of the second connecting member 410 and presses against the cover plate 200. Furthermore, the second connecting member 410 can adopt a quick-release pin structure. One second locking member 430 is a spring pin, and the other is a cotter pin, which are inserted into the pin holes at both ends of the second connecting member 410 for quick fixation.

[0060] In this embodiment, the through-type design of the second connector 410 ensures that the shielding member 420 is accurately aligned with the non-coated hole 520, and the two second locking members 430 apply locking force from both sides to form a stable three-point fixing structure. This arrangement ensures that the shielding member 420 completely covers the non-coated hole 520 and prevents displacement caused by vibration during the coating process. The adjustable characteristics of the second locking members 430 allow for precise position adjustment for optical elements 500 of different thicknesses, while facilitating quick disassembly and replacement. This structure achieves reliable sealing through mechanical limiting, effectively preventing coating material from penetrating into the non-coated area and improving coating quality.

[0061] In some possible embodiments, the second connector 410 may be equipped with a length adjustment mechanism, such as a double-ended stud with a locking nut, allowing the effective working length of the second connector 410 to be changed by rotating the adjusting nut. The shielding member 420 may have a tapered sealing surface that forms a surface contact seal with the chamfer of the non-coated hole 520, improving the sealing effect. The second locking member 430 may employ an anti-loosening nut structure or add an elastic washer at the threaded connection to prevent loosening caused by high-frequency vibration during the coating process. This configuration enhances the sealing performance and shock resistance of the device, adapts to non-coated holes 520 of different diameters, and improves reliability in continuous coating operations.

[0062] In some embodiments of this invention, the width of the overlap 120 is smaller than the width of the edge 530 located at the edge of the optical element 500. This arrangement avoids the overlap 120 from obstructing the coating area 510, preventing the portion of the coating area 510 from being coated.

[0063] In some embodiments of this utility model, both the base 100 and the cover plate 200 have a flat structure. Specifically, both the base 100 and the cover plate 200 are circular plates.

[0064] Reference Figure 2 In some embodiments of this invention, the diameter of the cover plate 200 is larger than the diameter of the coating hole 110. Since the optical element 500 is disposed inside the coating hole 110, the larger diameter of the cover plate 200 than the diameter of the coating hole 110 can achieve complete protection of the back side of the optical element 500.

[0065] In some embodiments of this utility model, the shape of the shielding member 420 is adapted to the shape of the non-coating hole 520. It is understood that the shielding member 420 only needs to be able to completely block the non-coating hole 520 without affecting the coating of the coating area 510.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A clamp, characterized in that, include: The base (100) is provided with a coating hole (110), and the inner wall of the coating hole (110) is provided with an overlap (120). The coating hole (110) and the overlap (120) cooperate to form a limiting space, which is used to limit the optical element (500). A cover plate (200) is provided on one side of the base (100), and the cover plate (200) is used to cover the back of the optical element (500); A central shielding component (400) is provided on the cover plate (200). The first end of the central shielding component (400) extends toward the base (100) and passes through the non-coated hole (520) in the middle of the optical element (500). The first end of the central shielding component (400) is provided with a shielding member (420) for sealing the non-coated hole (520).

2. The clamp according to claim 1, characterized in that, The cover plate (200) is disposed on one side of the base (100) via multiple connecting parts (300); The plurality of the connecting components (300) are spaced apart; A space is provided between the cover plate (200) and the base (100).

3. The clamp according to claim 2, characterized in that, The connecting component (300) includes: A first connector (310) has a first end that penetrates the cover plate (200) and a second end that penetrates the base (100). At least two first locking members (320), one of which cooperates with the first connector (310) to limit the cover plate (200) to a first end of the first connector (310), and the other of which cooperates with the first connector (310) to limit the base (100) to a second end of the first connector (310).

4. The clamp according to claim 3, characterized in that, The first connector (310) includes: The limiting segment (311) has a diameter greater than that of the limiting hole on the cover plate (200) and the base (100); Two connecting segments (312) are respectively located at both ends of the limiting segment (311), and the two connecting segments (312) pass through the limiting holes on the cover plate (200) and the base (100) in a one-to-one correspondence.

5. The clamp according to claim 1, characterized in that, The central blocking component (400) also includes: The second connector (410) passes through the cover plate (200), the non-coated hole (520), and the shielding member (420) in sequence. At least two second locking members (430), one of which limits the shield (420) to the non-coated hole (520), and the other of which limits the second connector (410) to the cover plate (200).

6. The clamp according to any one of claims 1-5, characterized in that, The outer periphery of the shield (420) is provided with a chamfer (421).

7. The clamp according to claim 6, characterized in that, The width of the overlap (120) is smaller than the width of the edge (530) located at the edge of the optical element (500).

8. The clamp according to claim 6, characterized in that, Both the base (100) and the cover plate (200) are flat structures.

9. The clamp according to claim 1, characterized in that, The diameter of the cover plate (200) is larger than the diameter of the coating hole (110).

10. The clamp according to claim 6, characterized in that, The shape of the shielding member (420) is adapted to the shape of the non-coated hole (520).

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