Novel adjustable aperture diaphragm

Abstract

The utility model is suitable for the technical field of diaphragms, and provides a novel adjustable aperture diaphragm, which comprises a base and a sliding seat arranged at the top end of the base. The mounting assembly is assembled at the bottom end of the sliding seat and the top end of the base; the fixed seat is movably connected to the interior of the sliding seat, and the top end of the fixed seat extends to the exterior of the sliding seat; the small-hole diaphragm body is fixedly connected to the inner wall of the fixed seat, diaphragm blades are arranged on the inner wall of the small-hole diaphragm body at equal angles, a reserved groove is formed in the top end of the small-hole diaphragm body, and a telescopic driving lever is arranged in the reserved groove. According to the novel adjustable small-hole diaphragm provided by the scheme, through the arrangement of the mounting assembly, rapid disassembly and assembly between the sliding seat and the base are realized, and then the small-hole diaphragm body can be conveniently and rapidly disassembled and maintained subsequently after the base is fixed through a bolt, so that the complexity and inconvenience that tools are required to be used for disassembly and assembly each time are avoided; and the corresponding disassembly and assembly maintenance working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of diaphragms, and particularly relates to a new type of adjustable small-hole diaphragm. Background Art

[0002] A small-hole diaphragm refers to an entity that restricts the light beam in an optical system. It can be the edge of a lens, a frame, or a specially set perforated screen, and plays an important role in the optical system for controlling the quantity or range of the light beam passing through. Currently, there are diaphragms with adjustable apertures on the market, which adjust the size of the diaphragm aperture by rotating or sliding diaphragm blades, or directly use electric control to achieve the size of the aperture.

[0003] The Chinese patent discloses a small-hole diaphragm with adjustable size and height, with the publication number CN219417866U. It is proposed in the text that "it includes a mounting base plate and a diaphragm body. Both ends of the mounting base plate are provided with fixing plates, and the inner sides of the fixing plates are both provided with second sliding components. The inner sides of the second sliding components are slidably mounted with a lifting plate, and both ends of the top of the lifting plate are provided with support plates, and the diaphragm body is mounted on the top of the support plates. The utility model is provided with a diaphragm body, a first diaphragm blade, a second diaphragm blade, and a third diaphragm blade. When it is necessary to increase the aperture inside the diaphragm body, the first diaphragm blade, the second diaphragm blade, and the third diaphragm blade can be taken out from inside the diaphragm body. When it is necessary to reduce the aperture inside the diaphragm body, the first diaphragm blade, the second diaphragm blade, and the third diaphragm blade can be respectively mounted inside the diaphragm body. The aperture size inside the diaphragm body is adjustable, and the device is relatively convenient to use".

[0004] However, in the above solution, its installation method is relatively cumbersome. Every time it is disassembled and assembled, tools such as screwdrivers must be used, resulting in cumbersome disassembly and assembly during subsequent maintenance of the diaphragm, which is not conducive to subsequent maintenance operations. At the same time, the aperture adjustment is not as convenient as that of existing products, resulting in inconvenience in its use. Therefore, it is very necessary to design a new type of adjustable small-hole diaphragm. Summary of the Utility Model

[0005] The utility model provides a new type of adjustable small-hole diaphragm, aiming to solve the problem that the installation methods of some currently used adjustable small-hole diaphragms are relatively cumbersome.

[0006] The present utility model is realized as follows. A novel adjustable small-aperture diaphragm includes a base and a sliding seat provided at the top end of the base; an installation component assembled at the bottom end of the sliding seat and the top end of the base, and the installation component is used to achieve quick disassembly and assembly between the sliding seat and the base; a fixed seat movably connected inside the sliding seat, and the top end of the fixed seat extends to the outside of the sliding seat; a small-aperture diaphragm body fixedly connected to the inner wall of the fixed seat, and diaphragm blades are arranged at equal angles on the inner wall of the small-aperture diaphragm body. A reserved groove is opened at the top end of the small-aperture diaphragm body, and a telescopic dial rod is arranged inside the reserved groove.

[0007] The installation component includes: installation grooves symmetrically opened on both sides at the top end of the base; a fixed groove opened at the upper end of the front surface of the base; a fixed spring movably connected inside the fixed groove; sliding blocks symmetrically and fixedly connected to both ends of the fixed spring, a positioning block fixedly connected to one side of the sliding block and extending into the installation groove, and a dial rod fixedly connected to the front surface of the sliding block and extending to the outside of the base; installation blocks symmetrically and fixedly connected to both sides at the bottom end of the sliding seat.

[0008] Preferably, a clamping structure is formed between the installation block and the inside of the installation groove, and the cross-sectional shapes of the installation groove and the installation block are convex.

[0009] Preferably, a sliding structure is formed between the sliding block and the inside of the fixed groove, and an integrated welded structure is formed between one side of the sliding block and one side of the positioning block.

[0010] Preferably, the telescopic dial rod includes: a fixed rod arranged inside the reserved groove; limit blocks symmetrically and fixedly connected to the top ends of both sides of the fixed rod; a clamping block fixedly connected to the top end of the fixed rod; a telescopic sleeve slidably connected to the surface of the fixed rod; limit grooves symmetrically opened on the inner wall of the telescopic sleeve; a clamping hole opened on the inner top wall of the telescopic sleeve.

[0011] Preferably, friction stripes are equiangularly opened at the upper end of the surface of the telescopic sleeve, and the top view shape of the friction stripes is arc-shaped.

[0012] Preferably, a sliding structure is formed between the limit block and the inside of the limit groove, and the top view shapes of the limit block and the limit groove are isosceles trapezoids.

[0013] Preferably, a clamping structure is formed between the clamping block and the inside of the clamping hole, and the top view shapes of the clamping block and the clamping hole are regular hexagons.

[0014] Preferably, a fixed bolt is movably connected to the lower end of the front surface of the sliding seat, and bolt holes threadedly matched with one end of the fixed bolt are equidistantly opened at the lower end of the front surface of the fixed seat.

[0015] Preferably, a chute is provided on the inner wall of the sliding seat, and sliding plates which are slidably engaged with the inside of the chute are fixedly connected to the lower ends on both sides of the fixed seat.

[0016] Preferably, anti-slip patterns are provided at equal intervals at the bottom end of the base, and the shape of the anti-slip patterns in the top view is wavy.

[0017] Compared with the related art, the novel adjustable small-aperture diaphragm provided by the present utility model has the following beneficial effects:

[0018] 1. By providing a sliding seat, a base and a mounting assembly, the sliding disassembly and assembly between the sliding seat and the base are realized by the sliding engagement of the mounting block with the inside of the mounting groove. Then, by using the elastic force of the fixing spring, the positioning block can slide back and forth, facilitating the limiting and pressing of the front surface of the mounting block, and further realizing the rapid disassembly and assembly between the sliding seat and the base. It is convenient to install and fix the base with bolts once, and when disassembling and maintaining the small-aperture diaphragm body subsequently, no tools are required, avoiding the cumbersome inconvenience caused by traditional bolts during each disassembly and assembly, and improving the corresponding disassembly and maintenance efficiency.

[0019] 2. By providing a telescopic lever, a fixed seat and a sliding seat, when the aperture of the small-aperture diaphragm body is required, the telescopic sleeve can be first extended upwards to a suitable height, and then the overall height of the telescopic sleeve and the fixed rod can be changed, enabling the staff to more smoothly adjust the aperture size of the small-aperture diaphragm body. After the adjustment is completed, the telescopic sleeve is pushed down to the lowest position, and the clamping block is engaged with the inside of the clamping hole to realize the limiting and fixing after the telescopic sleeve slides down, and then the telescopic sleeve and the fixed rod can be slid down and stored, reducing their overall height. At the same time, by using the sliding of the fixed seat and the sliding seat, and using the threaded fit between the fixing bolt and the appropriate bolt hole, the overall height adjustment of the small-aperture diaphragm body is realized, improving its applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the front view structural diagram of the present utility model;

[0021] Figure 2 is the rear bottom view structural diagram of the present utility model;

[0022] Figure 3 is the overall exploded structural diagram of the present utility model;

[0023] Figure 4 is the partial cross-sectional structural diagram at the small-aperture diaphragm body of the present utility model;

[0024] Figure 5 is the exploded cross-sectional structural diagram at the telescopic lever body of the present utility model;

[0025] Figure 6 is of the present utility model Figure 3Enlarged structural diagram at A in the middle.

[0026] In the figure: 1. telescopic lever; 101. friction pattern; 102. telescopic sleeve; 103. fixing rod; 104. limiting block; 105. clamping block; 106. limiting groove; 107. clamping hole; 2. reserved groove; 3. pinhole aperture body; 4. fixing seat; 5. aperture blade; 6. sliding seat; 7. base; 8. mounting assembly; 801. mounting groove; 802. mounting block; 803. positioning block; 804. toggle lever; 805. fixing spring; 806. sliding block; 807. fixing groove; 9. slide plate; 10. fixing bolt; 11. anti-skid pattern; 12. slide groove; 13. bolt hole. DETAILED DESCRIPTION

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] Example 1

[0030] The preferred embodiment of the novel adjustable aperture diaphragm provided by the utility model is as follows: Figures 1 to 6 As shown: a novel adjustable pinhole diaphragm comprises a base 7, and a sliding base 6 arranged at the top of the base 7; a mounting assembly 8 assembled at the bottom of the sliding base 6 and the top of the base 7, the mounting assembly 8 being used to realize quick disassembly and assembly between the sliding base 6 and the base 7; a fixed base 4 movably connected to the inside of the sliding base 6, the top of the fixed base 4 extending to the outside of the sliding base 6; a pinhole diaphragm body 3 fixedly connected to the inner wall of the fixed base 4, the inner wall of the pinhole diaphragm body 3 being provided with diaphragm blades 5 at equal angles, the top of the pinhole diaphragm body 3 being provided with a reserved groove 2, the inside of the reserved groove 2 being provided with a telescopic lever 1.

[0031] The mounting assembly 8 includes: mounting grooves 801 symmetrically provided on both sides of the top of the base 7; a fixing groove 807 provided on the upper front end of the base 7; a fixing spring 805 movably connected to the inside of the fixing groove 807; sliding blocks 806 symmetrically fixedly connected to both ends of the fixing spring 805, a positioning block 803 extending to the inside of the mounting groove 801 fixedly connected to one side of the sliding block 806, and a toggle rod 804 extending to the outside of the base 7 fixedly connected to the front of the sliding block 806; and mounting blocks 802 symmetrically fixedly connected to both sides of the bottom end of the sliding seat 6.

[0032] It should be noted that some existing new adjustable pinhole diaphragms still have certain shortcomings in actual use. Each time they are disassembled and assembled, tools such as screwdrivers must be used, which makes the disassembly and assembly of the diaphragm cumbersome and inconvenient during subsequent maintenance, which is not conducive to subsequent maintenance operations.

[0033] The fixing spring 805 is then driven to compress the sliding block 806 and completely enter the fixing groove 807, and then the mounting block 802 is slid into the mounting groove 801. The toggle rod 804 is then released, and the elastic force of the fixing spring 805 is utilized to make the sliding block 806 slide and drive the positioning block 803 to slide into the mounting groove 801, and the front side of the mounting block 802 is limited and pressed to ensure that the mounting block 802 is firmly slidably engaged with the mounting groove 801. When disassembling, the toggle rod 804 is driven to make the positioning block 803 slide completely out of the mounting groove 801, and then the sliding block 802 is slidably engaged with the mounting groove 801. The seat 6 makes the mounting block 802 completely disengaged from the inside of the mounting groove 801, thereby realizing quick disassembly and assembly between the sliding seat 6 and the base 7, which is convenient for once installing and fixing the base 7 by bolts. No tools are needed for subsequent disassembly and assembly of the pinhole aperture body 3 for maintenance, thereby improving the corresponding disassembly and assembly maintenance efficiency. At the same time, during the use of the pinhole aperture body 3, the aperture blade 5 can be rotated by the telescopic lever 1 to adjust the aperture size of the pinhole aperture body 3. At the same time, the fixed seat 4 is slid to slide with the inside of the sliding seat 6 to a suitable height, and then the fixing bolt 10 is rotated in the opposite direction to be tightened to the inside of a suitable bolt hole 13, thereby realizing limited fixation of the fixed seat 4 after sliding, thereby changing the overall height of the pinhole aperture body 3 and improving its applicability.

[0034] In a further preferred embodiment of the present invention, a snap-fit ​​structure is formed between the mounting block 802 and the interior of the mounting groove 801 , and the cross-sections of the mounting groove 801 and the mounting block 802 are convex.

[0035] In this embodiment, the convex mounting block 802 is used to slide and engage with the interior of the mounting groove 801 to improve the firmness and stability of the initial sliding engagement between the sliding seat 6 and the base 7.

[0036] In a further preferred embodiment of the present invention, a sliding structure is formed between the sliding block 806 and the interior of the fixing groove 807 , and one side of the sliding block 806 and one side of the positioning block 803 are welded into an integrated structure.

[0037] In this embodiment, the sliding block 806 is used to make the positioning block 803 slide back and forth more steadily and smoothly.

[0038] Example 2

[0039] Based on Example 1, a preferred embodiment of the novel adjustable aperture diaphragm provided by the present invention is as follows: Figures 1 to 6 As shown: the telescopic lever 1 includes: a fixed rod 103 arranged inside the reserved groove 2; limit blocks 104 symmetrically fixedly connected to the top ends of both sides of the fixed rod 103; a clamping block 105 fixedly connected to the top end of the fixed rod 103; a telescopic sleeve 102 slidably connected to the surface of the fixed rod 103; limit grooves 106 symmetrically opened on the inner wall of the telescopic sleeve 102; and a clamping hole 107 opened on the inner top wall of the telescopic sleeve 102.

[0040] In the present embodiment, when the aperture of the pinhole aperture body 3 is needed, the telescopic sleeve 102 can be first extended upward so that the bottom end of the limit groove 106 contacts the bottom end of the limit block 104, thereby changing the overall height of the telescopic sleeve 102 and the fixed rod 103, allowing the staff to more smoothly adjust the aperture size of the pinhole aperture body 3. After the adjustment is completed, the telescopic sleeve 102 is pushed downward to the lowest point, and the clamping block 105 is engaged with the inside of the clamping hole 107, so as to achieve the limited fixation of the telescopic sleeve 102 after it slides down, and then the telescopic sleeve 102 and the fixed rod 103 can be stored in the downward direction to reduce their overall height.

[0041] In a further preferred embodiment of the present invention, friction lines 101 are provided at equal angles on the upper end of the telescopic sleeve 102 , and the shape of the friction lines 101 in a top view is an arc.

[0042] In this embodiment, the arc-shaped friction pattern 101 is used to increase the anti-slip property of the contact between the user's fingers and the surface of the telescopic sleeve 102 , making it easier to move the telescopic sleeve 102 .

[0043] In a further preferred embodiment of the present invention, a sliding structure is formed between the limiting block 104 and the inside of the limiting groove 106 , and the limiting block 104 and the limiting groove 106 are shaped like an isosceles trapezoid in a top view.

[0044] In this embodiment, the sliding of the isosceles trapezoidal limiting block 104 and the inner part of the limiting groove 106 is utilized to facilitate the smooth upward and downward sliding of the telescopic sleeve 102 .

[0045] In a further preferred embodiment of the present utility model, a snap-fit structure is formed between the inside of the clamping block 105 and the clamping hole 107, and the shapes of the top views of the clamping block 105 and the clamping hole 107 are regular hexagons.

[0046] In this embodiment, the snap-fit of the regular hexagon clamping block 105 and the inside of the clamping hole 107 is utilized to realize the limit fixation after the telescopic sleeve 102 slides down.

[0047] In a further preferred embodiment of the present utility model, a fixing bolt 10 is movably connected to the lower end of the front surface of the sliding seat 6, and bolt holes 13 that are threadedly engaged with one end of the fixing bolt 10 are equidistantly arranged at the lower end of the front surface of the fixing seat 4.

[0048] In this embodiment, the threaded engagement of the fixing bolt 10 with the inside of the appropriate bolt hole 13 is utilized to realize the limit fixation after the sliding between the fixing seat 4 and the sliding seat 6.

[0049] In a further preferred embodiment of the present utility model, a sliding groove 12 is formed in the inner wall of the sliding seat 6, and sliding plates 9 that are slidably engaged with the inside of the sliding groove 12 are fixedly connected to the lower ends on both sides of the fixing seat 4.

[0050] In this embodiment, the sliding of the sliding plates 9 with the inside of the sliding groove 12 is utilized to improve the smoothness of the up-and-down sliding of the fixing seat 4.

[0051] In a further preferred embodiment of the present utility model, anti-slip lines 11 are equidistantly arranged at the bottom end of the base 7, and the shape of the top view of the anti-slip lines 11 is wavy.

[0052] In this embodiment, the wavy anti-slip lines 11 are utilized to improve the anti-slip stability between the base 7 and the installation surface after installation.

[0053] In summary, by utilizing the sliding of the fixing seat 4 and the sliding seat 6, the height of the small-aperture diaphragm body 3 is slidably adjusted. Then, by using the telescopic lever 1, the diaphragm blades 5 are rotated to change the aperture size of the small-aperture diaphragm body 3, and by using the installation assembly 8, the quick disassembly and assembly between the sliding seat 6 and the base 7 are realized, facilitating the disassembly, assembly and maintenance of the small-aperture diaphragm body 3.

[0054] It should be noted that the circuits, electronic components and modules involved in the present utility model are all prior arts, which can be fully realized by those skilled in the art without further elaboration. The content protected by the present utility model does not involve improvements to software and methods.

[0055] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the above-mentioned unit division is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without creative efforts, combine, add, delete or make other adjustments to the features in the embodiments of the present invention according to the situation, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention. These technical solutions also belong to the scope of protection of the present invention.

Claims

1. A novel adjustable pinhole diaphragm, characterized in that: comprising a base (7), and A sliding seat (6) arranged on the top of the base (7); A mounting assembly (8) mounted on the bottom end of the sliding seat (6) and the top end of the base (7), wherein the mounting assembly (8) is used to realize rapid assembly and disassembly between the sliding seat (6) and the base (7); A fixed seat (4) movably connected to the interior of the sliding seat (6), wherein the top end of the fixed seat (4) extends to the exterior of the sliding seat (6); A small aperture diaphragm body (3) is fixedly connected to the inner wall of the fixing seat (4), the inner wall of the small aperture diaphragm body (3) is provided with diaphragm blades (5) at equal angles, a reserved groove (2) is provided at the top of the small aperture diaphragm body (3), and a telescopic lever (1) is provided inside the reserved groove (2); The mounting assembly (8) comprises: Mounting grooves (801) symmetrically arranged on both sides of the top of the base (7); A fixing groove (807) is provided at the upper end of the front side of the base (7); A fixing spring (805) movably connected to the inside of the fixing groove (807); A sliding block (806) symmetrically fixedly connected to both ends of the fixed spring (805), one side of the sliding block (806) being fixedly connected to a positioning block (803) extending into the interior of the mounting groove (801), and a front side of the sliding block (806) being fixedly connected to a toggle rod (804) extending to the exterior of the base (7); The mounting blocks (802) are symmetrically fixedly connected to the two sides of the bottom end of the sliding seat (6).

2. The novel adjustable aperture diaphragm according to claim 1, characterized in that: A snap-fit ​​structure is formed between the mounting block (802) and the interior of the mounting groove (801), and the cross-sections of the mounting groove (801) and the mounting block (802) are convex.

3. The novel adjustable aperture diaphragm as claimed in claim 1, characterized in that: A sliding structure is formed between the sliding block (806) and the interior of the fixing groove (807), and a welded integrated structure is formed between one side of the sliding block (806) and one side of the positioning block (803).

4. The novel adjustable aperture diaphragm as claimed in claim 1, characterized in that: The telescopic lever (1) comprises: A fixing rod (103) arranged inside the reserved groove (2); Limiting blocks (104) symmetrically fixedly connected to the top ends of both sides of the fixing rod (103); A clamping block (105) fixedly connected to the top end of the fixing rod (103); A telescopic sleeve (102) slidably connected to the surface of the fixed rod (103); A limiting groove (106) symmetrically arranged on the inner wall of the telescopic sleeve (102); A clamping hole (107) is provided on the inner top wall of the telescopic sleeve (102).

5. The novel adjustable aperture diaphragm as claimed in claim 4, characterized in that: The upper end of the telescopic sleeve (102) is provided with friction lines (101) at equal angles, and the shape of the friction lines (101) in a top view is an arc.

6. The novel adjustable aperture diaphragm as claimed in claim 4, characterized in that: A sliding structure is formed between the limiting block (104) and the inside of the limiting groove (106); the limiting block (104) and the limiting groove (106) are in the shape of an isosceles trapezoid in a top view.

7. The novel adjustable aperture diaphragm as claimed in claim 4, characterized in that: A locking structure is formed between the clamping block (105) and the inside of the clamping hole (107); the clamping block (105) and the clamping hole (107) are in the shape of a regular hexagon in a top view.

8. The novel adjustable aperture diaphragm as claimed in claim 1, characterized in that: The lower end of the front side of the sliding seat (6) is movably connected with a fixing bolt (10), and the lower end of the front side of the fixing seat (4) is provided with bolt holes (13) threadedly matched with one end of the fixing bolt (10) at equal intervals.

9. The novel adjustable aperture diaphragm as claimed in claim 1, characterized in that: The inner wall of the sliding seat (6) is provided with a sliding groove (12), and the lower ends of both sides of the fixed seat (4) are fixedly connected with sliding plates (9) which are slidably matched with the inside of the sliding groove (12).

10. The novel adjustable aperture diaphragm according to claim 1, characterized in that: The bottom end of the base (7) is provided with anti-skid patterns (11) at equal intervals, and the anti-skid patterns (11) are wavy in shape when viewed from above.

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