Manual diaphragm structure without snap ring

Abstract

The utility model discloses a manual diaphragm structure without a snap ring, which comprises a basic base, a movable driving ring and a plurality of blades, the basic base is provided with a base accommodating cavity and a base light through hole, the movable driving ring is rotatably arranged in the base accommodating cavity, and the plurality of blades are arranged between the movable driving ring and the bottom of the base accommodating cavity. Each blade is driven by a movable driving ring; the movable driving ring is provided with an operating rod penetrating through a side wall through hole in the side wall of the base containing cavity. A base hanging groove is formed in the upper end of the side wall of the base containing cavity and located above the side wall through hole. A plurality of upper edge notches which are distributed in an annular array and communicate with the base hanging groove are formed in the upper end face of the foundation base. A plurality of driving ring hanging tables which are distributed in an annular array and protrude outwards in the radial direction are arranged at the upper end of the movable driving ring, and the driving ring hanging tables stretch into the base hanging grooves respectively. By means of the structural design, the LED lamp has the advantages of being novel in design, simple in structure, few in assembling procedure and good in stability and reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of manual diaphragms, in particular to a manual diaphragm structure without a clamping ring. Background Art

[0002] The patent number is: ZL202321554315.1, and the patent name is: A Chinese utility model patent for an adjustable aperture with high stability. It actually discloses a manual aperture; specifically, the adjustable aperture with high stability includes a wave seat, multiple wave pieces, a wave cover, a retaining spring and an adjusting rod. The wave seat is provided with several circular holes evenly distributed around the circumference, a notch is provided on the side of the wave seat, and a retaining groove is provided on the inner side of the wave seat. The wave cover is rotatably arranged inside the wave seat, and several notches are provided on the wave cover. The retaining spring is located inside the retaining groove, and one side of the retaining spring is against the wave cover. The wave piece is located between the wave cover and the wave seat, and fixed shafts are provided on both sides of the wave piece, and the fixed shaft at one end is rotatably arranged in the circular hole, and the fixed shaft on the other side is slidably arranged in the slot.

[0003] When adjusting the aperture size of the highly stable adjustable iris, the adjustment rod drives the aperture cover to rotate, thereby adjusting the position of the aperture plate and, in turn, the aperture size. A retaining spring is installed in a slot in the aperture seat and is used to axially limit the aperture cover.

[0004] It should be noted that the above-mentioned adjustable iris with high stability has the following drawbacks, specifically:

[0005] Defect 1: The retaining spring is a structural component independent of the diaphragm seat, and is mounted in the slot of the diaphragm seat through a retaining slot. When assembling the adjustable diaphragm with high stability, the retaining spring needs to be assembled after the diaphragm piece and the diaphragm cover are assembled. Therefore, the retaining spring structure increases the assembly process of the entire diaphragm.

[0006] Defect 2: The retaining spring is an elastic part and is prone to deformation during use. Once the retaining spring is deformed, the friction force between the retaining spring and the light cover will increase, thereby affecting the comfort of the adjustment action. Utility Model Content

[0007] The purpose of the utility model is to provide a manual iris structure without a retaining ring in view of the deficiencies in the prior art. The manual iris structure without a retaining ring has a novel design, a simple structure, fewer assembly steps and good stability and reliability.

[0008] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions.

[0009] A manual diaphragm structure without clamping ring comprises a base, a movable driving ring and a plurality of blades, the base is internally formed with a base accommodating cavity with an upward opening, and a base light passage with a downward opening is formed in the middle of the bottom of the base accommodating cavity;

[0010] The movable driving ring is rotationally installed in the base accommodating cavity, and the plurality of blades are installed between the movable driving ring and the bottom of the base accommodating cavity, and each blade is driven by the movable driving ring;

[0011] A sidewall of the base accommodating cavity is provided with a sidewall through hole penetrating in the radial direction, and the movable driving ring is provided with an operating rod penetrating through the sidewall through hole;

[0012] An upper end of the sidewall of the base accommodating cavity is provided with a base hanging groove in the form of a circular ring above the sidewall through hole, and an upper edge notch in the form of an annular array and in communication with the base hanging groove is formed in the upper end surface of the base;

[0013] An upper end of the movable driving ring is provided with a plurality of driving ring hanging tables in the form of an annular array and respectively protruding radially outward, and each driving ring hanging table extends into the base hanging groove;

[0014] During installation of the movable driving ring in the base accommodating cavity, each driving ring hanging table of the movable driving ring enters the base hanging groove through the corresponding upper edge notch.

[0015] The lower end of the sidewall of the base accommodating cavity is spaced apart from the movable driving ring.

[0016] The base is provided with a support table in partial contact with the lower end surface of the movable driving ring.

[0017] The upper end surface of the base is provided with three upper edge notches in the form of an annular array, and the upper end of the movable driving ring is provided with three driving ring hanging tables in the form of an annular array.

[0018] The outer surface of the movable driving ring is provided with an internal thread hole, the operating rod is a screw column, and the screw column is screwed into the internal thread hole of the movable driving ring.

[0019] Each blade has a fixed end and a free end, a free end rivet is riveted and installed at the free end of each blade, and a fixed end rivet is riveted and installed at the fixed end of each blade.

[0020] The bottom of the base accommodating cavity is provided with a bottom pivot hole corresponding to the fixed end rivet of each blade on the side of the base light passage, and the fixed end rivet of each blade is pivotally installed in the corresponding bottom pivot hole.

[0021] The movable driving ring is provided with driving ring sliding grooves opening inwards corresponding to the free end rivets of each blade, and the free end rivets of each blade are slidably installed in the corresponding driving ring sliding grooves.

[0022] Wherein, the movable driving ring is respectively provided with an anti-drop buckle at the inner end opening position of each driving ring sliding groove.

[0023] Compared with the prior art, the present invention has the following beneficial effects, specifically:

[0024] 1. The movable drive ring is vertically limitedly mounted on the base through the cooperation of the drive ring hanging platform and the base hanging groove. After the movable drive ring is assembled, there is no need to install the snap ring. Compared with the existing technology, the lack of the snap ring makes the overall structure simpler and reduces the assembly process.

[0025] 2. Since the present invention does not have a snap ring structure, it can effectively avoid the deformation of the snap ring affecting the stability of use; compared with the existing technology, the present invention has better stability and reliability.

[0026] 3. Therefore, the manual diaphragm structure without a retaining ring of the present invention has the advantages of novel design, simple structure, fewer assembly steps and good stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings. However, the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

[0028] Figure 1 It is a structural diagram of the present utility model.

[0029] Figure 2 for Figure 1 Schematic diagram of the decomposition.

[0030] Figure 3 This is a structural diagram of the utility model from another perspective.

[0031] Figure 4 It is a partial cross-sectional schematic diagram of the present utility model.

[0032] Figure 5 It is a partial cross-sectional schematic diagram of another embodiment of the present invention.

[0033] exist Figures 1 to 5 These include:

[0034] 1- Basic base; 11- Base accommodating cavity; 12- Base light hole; 13- Side wall through hole; 14- Base hanging groove; 15- Upper edge notch; 16- Support platform; 17- Bottom pivot hole; 2- Movable drive ring; 21- Drive ring hanging platform; 22- Internal threaded hole; 23- Drive ring slide; 24- Anti-drop buckle; 3- Blade; 31- Free end rivet; 32- Fixed end rivet; 4- Operating lever. DETAILED DESCRIPTION

[0035] The present invention will be described below in conjunction with specific implementation methods.

[0036] Example 1, as Figures 1 to 5 As shown, a manual aperture structure without a retaining ring includes a basic base 1, a movable driving ring 2 and a plurality of blades 3. A base accommodating cavity 11 with an upward opening is formed inside the basic base 1, and a base light-through hole 12 with a downward opening is formed in the middle position of the bottom of the base accommodating cavity 11.

[0037] The movable driving ring 2 is rotatably mounted in the base accommodating cavity 11 , and a plurality of blades 3 are mounted between the movable driving ring 2 and the bottom of the base accommodating cavity 11 , and each blade 3 is driven by the movable driving ring 2 .

[0038] Further, such as Figures 1 to 3 As shown, a radially penetrating sidewall through-hole 13 is provided on the sidewall of the base accommodating cavity 11 , and an operating rod 4 passing through the sidewall through-hole 13 is mounted on the movable driving ring 2 .

[0039] Furthermore, Figure 1 、 Figure 2 、 Figure 4 as well as Figure 5 As shown, a circular ring-shaped base hanging groove 14 is provided at the upper end of the side wall of the base accommodating cavity 11 above the side wall through hole 13, and a plurality of upper edge notches 15 distributed in a circular array and respectively connected to the base hanging groove 14 are provided on the upper end surface of the basic base 1.

[0040] In addition, if Figures 1 to 5 As shown, the upper end portion of the movable driving ring 2 is provided with a plurality of driving ring hanging platforms 21 distributed in a ring array and protruding radially outward, and each driving ring hanging platform 21 extends into the base hanging groove 14 respectively.

[0041] Specifically, such as Figures 1 to 3 As shown, the upper end surface of the base 1 is provided with three upper edge notches 15 distributed in a circular array, and the upper end portion of the movable drive ring 2 is provided with three drive ring hanging platforms 21 distributed in a circular array. Of course, the number of the upper edge notches 15 and the number of the drive ring hanging platforms 21 described above do not constitute a limitation to this first embodiment.

[0042] It is pointed out that, in the process of installing the movable driving ring 2 in the base accommodating cavity 11, the driving ring hanging table 21 of the movable driving ring 2 is entered into the base hanging groove 14 through the corresponding upper edge notch 15, and then the movable driving ring 2 is rotated and the mounting position of the operating rod 4 is aligned with the side wall through hole 13 of the base, and then the operating rod 4 is mounted in the movable driving ring 2 through the side wall through hole 13.

[0043] It is emphasized that, for the manual diaphragm structure without the clamping ring of the first embodiment, the movable driving ring 2 is vertically limitedly installed in the base 1 through the cooperation of the driving ring hanging table 21 and the base hanging groove 14, and after the assembly of the movable driving ring 2 is completed, the clamping ring does not need to be installed. Compared with the prior art, the manual diaphragm structure without the clamping ring of the first embodiment has a simpler overall structure and fewer assembly procedures due to the lack of the clamping ring.

[0044] In addition, since the manual diaphragm structure without the clamping ring of the first embodiment does not have the clamping ring structure, it can effectively avoid the influence of the deformation of the clamping ring on the stability of use. Compared with the prior art, the manual diaphragm structure without the clamping ring of the first embodiment has better stability and reliability.

[0045] In summary, through the above structure design, the manual diaphragm structure without the clamping ring of the first embodiment has the advantages of novel design, simple structure, fewer assembly procedures and good stability and reliability.

[0046] As shown in Figure 4 and Figure 5 , the difference between the second embodiment and the first embodiment is that the lower end of the side wall of the base accommodating cavity 11 is spaced apart from the movable driving ring 2.

[0047] Through the above spacing structure design, the second embodiment can effectively reduce the contact area between the side wall of the base accommodating cavity 11 and the movable driving ring 2, thereby reducing the friction when the movable driving ring 2 rotates, to improve the smoothness when the movable driving ring 2 is rotated.

[0048] The partial contact structure can effectively reduce the contact area between the movable driving ring 2 and the base 1, that is, reduce the friction when the movable driving ring 2 rotates, thereby achieving the purpose of improving the smoothness when the movable driving ring 2 is rotated.

[0049] As shown in Figure 5 , the difference between the third embodiment and the first embodiment is that the base 1 is provided with a support table 16 which is in partial contact with the lower end surface of the movable driving ring 2.

[0050] For the base 1 with the support table 16, the thickness value of the driving ring hanging table 21 can be less than the height value of the base hanging groove 14, at which time the movable driving ring 2 can be vertically limited by the support table 16.

[0051] In addition, the support platform 16 and the lower surface of the movable driving ring 2 are a local contact structure, which can effectively reduce the contact area between the movable driving ring 2 and the basic base 1, that is, reduce the friction force when the movable driving ring 2 rotates, thereby achieving the purpose of improving the smoothness of rotating the movable driving ring 2.

[0052] Example 4, as Figures 1 to 3 As shown, the difference between the fourth embodiment and the first embodiment is that an internal threaded hole 22 is provided on the outer side of the movable driving ring 2 , and the operating rod 4 is a screw column that is screwed into the internal threaded hole 22 of the movable driving ring 2 .

[0053] During the assembly process of the manual aperture structure of the fourth embodiment, after each drive ring hanging platform 21 of the movable drive ring 2 passes through the corresponding upper edge notch 15 and enters the base hanging groove 14, the movable drive ring 2 is rotated so that the internal threaded hole 22 of the movable drive ring 2 is aligned with the side wall through hole 13 of the base base 1, and then the screw column is passed through the side wall through hole 13 and screwed into the internal threaded hole 22 of the movable drive ring 2, thereby completing the assembly operation of the screw column.

[0054] Example 5, as Figures 1 to 3 As shown, the difference between this fifth embodiment and the first embodiment is that each blade 3 can be connected to the movable drive ring 2 and the basic base 1 in the following structural form, specifically: each blade 3 has a fixed end and a free end, the free end of each blade 3 is riveted with a free end rivet 31, and the fixed end of each blade 3 is riveted with a fixed end rivet 32.

[0055] The bottom of the base accommodating cavity 11 has bottom pivot holes 17 formed beside the base light hole 12 corresponding to the fixed end rivets 32 of each blade 3 . The fixed end rivets 32 of each blade 3 are pivotally installed in the corresponding bottom pivot holes 17 .

[0056] In addition, the movable driving ring 2 is provided with an inwardly opening driving ring slot 23 corresponding to the free end rivet 31 of each blade 3 , and the free end rivet 31 of each blade 3 is slidably installed in the corresponding driving ring slot 23 .

[0057] Example 6: Figure 3 As shown, the difference between the sixth embodiment and the fifth embodiment is that the movable driving ring 2 is provided with an anti-drop buckle 24 at the inner end opening position of each driving ring sliding groove 23.

[0058] The anti-disengagement reverse buckle 24 of the sixth embodiment has the effect that when the blade 3 is extruded and deformed by external force, the anti-disengagement reverse buckle 24 can effectively prevent the free end rivet 31 of the free end of the blade 3 from sliding out of the corresponding driving ring sliding groove 23, thereby effectively increasing the stability and reliability of the installation of the blade 3.

[0059] The above merely describes the preferred embodiments of the present application, and for those skilled in the art, the specific implementation manners and application scopes can be changed according to the idea of the present application, and the content of the specification should not be understood as a limitation of the present application.

Claims

1. A hand-operated diaphragm structure without clamping ring, comprising a base seat (1), a movable driving ring (2) and a plurality of blades (3), the base seat (1) is internally formed with a seat accommodating cavity (11) with an upward opening, and a seat light passage (12) with a downward opening is formed at the middle position of the bottom of the seat accommodating cavity (11); the movable driving ring (2) is rotatably installed in the seat accommodating cavity (11), and the plurality of blades (3) are installed between the movable driving ring (2) and the bottom of the seat accommodating cavity (11), and each blade (3) is driven by the movable driving ring (2); a side wall through hole (13) is formed in the side wall of the seat accommodating cavity (11) and extends radially, and the movable driving ring (2) is provided with an operating rod (4) passing through the side wall through hole (13); a circular annular base hanging groove (14) is formed above the side wall through hole (13) at the upper end of the side wall of the seat accommodating cavity (11), and a plurality of annular arrayed upper edge notches (15) are formed in the upper end surface of the base seat (1) and are respectively communicated with the base hanging groove (14); a plurality of annular arrayed driving ring hanging tables (21) are provided at the upper end of the movable driving ring (2) and respectively protrude radially outward, and each driving ring hanging table (21) extends into the base hanging groove (14); during the installation of the movable driving ring (2) in the seat accommodating cavity (11), each driving ring hanging table (21) of the movable driving ring (2) enters the base hanging groove (14) through the corresponding upper edge notch (15). The lower end of the side wall of the seat accommodating cavity (11) is spaced from the movable driving ring (2). The base seat (1) is provided with a support table (16) in partial contact with the lower end surface of the movable driving ring (2). characterized in that The upper end surface of the base seat (1) is provided with three annular arrayed upper edge notches (15), and the upper end of the movable driving ring (2) is provided with three annular arrayed driving ring hanging tables (21). An internal thread hole (22) is formed in the outer side surface of the movable driving ring (2), the operating rod (4) is a screw column, and the screw column is screwed into the internal thread hole (22) of the movable driving ring (2). Each blade (3) has a fixed end and a free end, a free end rivet (31) is riveted and installed at the free end of each blade (3), and a fixed end rivet (32) is riveted and installed at the fixed end of each blade (3).

2. A manual iris structure without a retaining ring according to claim 1, characterized in that: A bottom pivot hole (17) is formed in the bottom of the seat accommodating cavity (11) and corresponds to the fixed end rivet (32) of each blade (3) beside the seat light passage (12), and the fixed end rivet (32) of each blade (3) is pivotally installed in the corresponding bottom pivot hole (17).

3. A manual iris structure without a retaining ring according to claim 1, characterized in that: The movable driving ring (2) is provided with an inwardly opening driving ring sliding groove (23) corresponding to the free end rivet (31) of each blade (3), and the free end rivet (31) of each blade (3) is slidingly installed in the corresponding driving ring sliding groove (23).

4. A manual iris structure without a retaining ring according to claim 1, characterized in that: The movable driving ring (2) is provided with an anti-disengagement reverse buckle (24) at the inner end opening position of each driving ring sliding groove (23).

5. A manual iris structure without a retaining ring according to claim 1, characterized in that: ​ 6. A manual iris structure without a retaining ring according to any one of claims 1 to 5, characterized in that: ​ ​ ​ 7. A manual iris structure without a retaining ring according to claim 6, characterized in that: ​

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