CN222420764U - Aperture adjustment device - Google Patents

Abstract

The utility model discloses an aperture adjusting device which comprises a base, a carrier, a rubber ring and a ring wire, wherein the base is provided with a light-shielding hole. The rubber ring is connected with the base, the rubber ring is annular and is provided with a diaphragm hole, the diaphragm hole is aligned with the avoidance light, and the carrier is abutted with the rubber ring. At least a part of the ring wire is made of a memory alloy wire and sleeved outside the carrier, the ring wire is respectively connected with the carrier and the base, and can drive the carrier to move in the vertical direction after being electrified, and the size of the aperture hole can be changed through the movement of the carrier. The aperture adjusting device provided by the utility model adjusts the aperture size through the rubber ring, so that the aperture adjusting device is compact in structure, light and handy, saves space, reduces cost and improves market competitiveness.

Description

Aperture adjusting device

Technical Field

The utility model relates to the technical field of electronic equipment, in particular to an aperture adjusting device.

Background

For the aperture of the camera, the camera can obtain deeper depth of field and sharper pictures by narrowing the aperture at the position with strong light, and can increase the light entering quantity by increasing the aperture at the position with insufficient light, so that pure pictures with higher exposure and lower noise can be obtained. In the field of electronic devices, a camera of a general electronic device cannot change the size of an aperture, so that the camera cannot adapt to various shooting environments by changing the aperture, and therefore, the situation that many electronic devices are exposed to the sun outdoors with strong sunlight is caused, and when shooting at night, the exposure is insufficient, the dark noise point of a picture is high, and the situation that details are lost is caused, so that in order to meet the shooting requirement of a user, a physical iris aperture is important for shooting.

In view of the fact that the aperture adjusting device in the prior art is large in shape and cannot meet market demands, a person skilled in the art needs to develop a novel iris aperture in order to overcome the technical problems.

Disclosure of utility model

The present utility model aims to provide an aperture adjusting device to solve the problems of the prior art

In order to solve the above technical problem, an embodiment of the present utility model provides an aperture adjusting device, including:

The base is provided with a light shielding hole;

The rubber ring is connected with the base, is annular and is provided with an aperture, and the aperture is aligned with the light-shielding hole;

A carrier, which is abutted with the rubber ring, and

The ring wire is made of a memory alloy wire and sleeved outside the carrier, the ring wire is respectively connected with the carrier and the base, and can drive the carrier to move in the vertical direction after being electrified, and the size of the aperture hole can be changed through the movement of the carrier.

In one embodiment, the ring wire is formed by alternately arranging at least two sections of spring wires and at least two sections of memory alloy wires and connecting the spring wires and the base end to end, and the memory alloy wires are connected with the carrier.

In one embodiment, the loop wire is formed by two sections of the spring wire and two sections of the loop wire, and two ends of the spring wire are respectively provided with an upward extending extension section, and the top ends of the extension sections are connected with the memory alloy wire.

In one embodiment, the base comprises a bottom plate which is annular and provided with built-in circuits, and the spring wires are connected with the top surface of the bottom plate and electrically connected with the built-in circuits.

In one embodiment, the radially outer side of the carrier is provided with a connecting protrusion, and the memory alloy wire is connected with the connecting protrusion.

In one embodiment, the rubber ring sequentially comprises from outside to inside in the radial direction:

the fixing part is the radial outer edge of the rubber ring;

A movable part abutting against the carrier, and

The center of the deformation part is provided with the aperture;

The base also includes:

a bottom plate;

The connecting part is connected with the top surface of the bottom plate and extends along the circumferential direction of the bottom plate, and the connecting part is connected with the fixing part;

And the bottom end of the supporting part is connected to the top surface of the bottom plate, and the top end of the supporting part extends to the bottom surface of the deformation part and forms the light shielding hole.

In one embodiment, the support portion includes a first shoulder and a second shoulder, each of the first shoulder and the second shoulder being in the shape of an annular step with a bottom end of the first shoulder connected to the base plate, a bottom end of the second shoulder connected to a top end of the first shoulder, the top end extending to a top surface of the deformation portion and forming the light shielding hole.

In one embodiment, the projection of the second shoulder and the projection of the movable portion are offset.

In one embodiment, the top surface of the movable part is provided with a concave area;

The bottom of the carrier is provided with an abutting bulge abutting against the bottom wall of the concave area.

In one embodiment, the deformation is entirely arched and the thickness of the deformation is smaller than the thickness of the movable part.

The aperture adjusting device provided by the invention adjusts the aperture size through the rubber ring, so that the aperture adjusting device is compact in structure, light and handy, saves space, reduces cost and improves market competitiveness.

Drawings

Fig. 1 and 2 are exploded views of a diaphragm adjusting device according to a fourth embodiment of the present utility model.

Fig. 3 is an assembled view of the base, carrier, rubber ring and ring wire of the embodiment of fig. 1.

Fig. 4 is an assembled view of the base and the rubber ring of the embodiment shown in fig. 1.

Fig. 5 is a perspective view of the base, rubber ring and carrier of the embodiment of fig. 1.

Fig. 6 is an assembly view of the diaphragm adjusting apparatus in the embodiment shown in fig. 1.

Fig. 7 is a cross-sectional view taken along line A-A of the embodiment of fig. 6.

Reference numerals 100, aperture adjusting device, 1, base, 11, bottom plate, 12, connecting part, 13, supporting part, 14, first shoulder, 15, second shoulder, 16, light-shielding hole, 2, rubber ring, 21, aperture hole, 22, fixing part, 221, fixing groove, 23, movable part, 231, concave area, 24, deformation part, 3, carrier, 31, connecting protrusion, 32, abutting protrusion, 4, ring wire, 41, memory alloy wire, 42, spring wire;

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present utility model, numerous technical details have been set forth in order to provide a better understanding of the present utility model. The technical solutions claimed in the claims of the present utility model can be realized without these technical details and various changes and modifications based on the following embodiments.

Throughout the specification and claims, unless the context requires otherwise, the word "comprise" and variations such as "comprises" and "comprising" will be understood to be open-ended, meaning of inclusion, i.e. to be interpreted to mean "including, but not limited to.

The following detailed description of various embodiments of the present utility model will be provided in connection with the accompanying drawings to provide a clearer understanding of the objects, features and advantages of the present utility model. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the utility model, but rather are merely illustrative of the true spirit of the utility model.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the purposes of clarity of presentation of the structure and manner of operation of the present utility model, the description will be made with the aid of directional terms, but such terms as "forward," "rearward," "left," "right," "outward," "inner," "outward," "inward," "upper," "lower," etc. are to be construed as convenience, and are not to be limiting.

The present utility model relates to a diaphragm adjusting apparatus 100, and the diaphragm adjusting apparatus 100 can be used to adjust the diaphragm size of a lens.

Specifically, as shown in fig. 1-2, the aperture adjusting device comprises a base 1, a rubber ring 2, a carrier 3 and a ring wire 4, wherein the base 1 is provided with a light shielding hole 16 for shielding light rays entering a lens of the carrier 3.

In the embodiment shown in fig. 1 and 2, the base 1 includes a base plate 11, a connection portion 12, a support portion 13, and a built-in wiring, wherein the base plate 11 is in the shape of a circular ring. It should be appreciated that in other embodiments, the base plate 11 may have other shapes.

The connecting part 12 is annular and is connected with the top surface of the bottom plate 11, the connecting part 12 protrudes out of the top surface of the bottom plate 11 and is close to the outer edge of the bottom plate 11 and is in a step shape, the inner ring of the connecting part 12 along the radial direction is a protruding connecting ring, the height of the outer ring is lower than that of the inner ring, and the outer ring and the inner ring form a step shape.

The support portion 13 is connected to the top surface of the base plate 11 and is located closer to the radially inner side of the base plate 11 than the connection portion 12, the support portion 13 is arched as a whole and has a bottom end connected to the base plate 11 and a top end located above the base plate 11 and extending toward the radially inner side direction. In the embodiment shown in fig. 1 and 7, the support portion 13 includes a first shoulder 14 and a second shoulder 15, each of the first shoulder 14 and the second shoulder 15 is in the shape of an annular step and the bottom end of the first shoulder 14 is connected to the bottom plate 11, the bottom end of the second shoulder 15 is connected to the top end of the first shoulder 14, the top end of the second shoulder 15 extends toward the top and forms a light shielding hole 16, and the second shoulder 15 is for supporting the rubber ring 2.

The supporting part 13 and the connecting part 12 are arranged at intervals, and the interval at least can ensure that the rubber ring 2 has enough downward moving space.

The carrier 3 is annular and is used for installing a lens, the lens of the carrier 3 and the light-shielding hole 16 are aligned along the vertical direction, the optical axis direction of the lens is also the vertical direction, and light can enter the lens of the carrier 3 from the light-shielding hole 16.

The rubber ring 2 is made of silica gel or rubber and has certain elasticity. The rubber ring 2 is ring-shaped and has a diaphragm hole 21 in the center, and the diaphragm hole 21 and the light-shielding hole 16 are aligned along the vertical direction for adjusting the size of the diaphragm.

In the embodiment shown in fig. 2 and 5, the rubber ring 2 includes a fixed portion 22, a movable portion 23 and a deformed portion 24 in this order from the outside to the inside in the radial direction, and the fixed portion 22 is a radially outer edge portion of the rubber ring 2 for connection with the connection portion 12. The movable portion 23 is located at the middle portion, the deformation portion 24 is located at the inner ring of the rubber ring 2, and the middle of the deformation portion 24 is the aperture 21.

The fixing portion 22 is fixedly connected to the connecting portion 12 of the base 1. In the embodiment shown in fig. 7, the bottom surface of the fixing portion 22 is provided with a fixing groove 221, and the fixing groove 221 is recessed from the bottom surface of the fixing portion 22 and extends in the circumferential direction of the fixing portion 22. The top surface of the connecting ring of the connecting portion is clamped in the fixing groove 221, and the radially outer edge of the fixing portion 22 is located on the outer ring of the connecting portion 12 and matches the outer ring of the connecting portion 12, that is, the bottom surface of the radially outer edge of the fixing portion 22 abuts against the top surface of the outer ring of the connecting portion 12. Of course, in other embodiments, the fixing portion 22 may be connected to the connecting portion 12 of the base 1 by bonding or other methods, and the specific connection manner of the rubber ring 2 and the base 1 is not limited.

The movable part 23 is located in the middle of the fixed part 22 and the deformation part 24 along the radial direction, the radial outer edge of the movable part 23 is connected with the top wall of the fixed groove 22 of the fixed part 22, and the top wall of the fixed groove 22 is thinner, so that the movable part 23 is convenient to move. The in-view edge of the movable part 23 is connected to the deformed part 24. The top surface of the movable portion 23 is substantially flush with the fixed portion 22, but may not be flush at that time. When the carrier 3 abuts against the top surface of the movable portion 23 and the carrier 3 moves downward in the vertical direction, the movable portion 23 can move downward and press the movable portion 23, so that the movable portion 23 drives the deformation portion 24 to deform, and the aperture 21 of the deformation portion 24 is enlarged. When the carrier 3 moves upward, the movable portion 23 moves upward, and the deformed portion 24 gradually returns to the original state, at which time the diaphragm aperture 21 is smallest.

Preferably, the top surface of the movable portion 23 is provided with a concave region 231, the concave region 231 extends along the circumferential direction of the movable portion 23, the bottom of the carrier 3 is provided with an abutting protrusion 32 abutting against the bottom wall of the concave region 231, the abutting protrusion 32 protrudes out of the bottom surface of the carrier 3, and when the carrier 3 moves along the vertical direction, the abutting protrusion 32 can drive the movable portion 23 to move downwards, and further drive the deformation portion 24 to deform, so as to adjust the aperture size.

The deformation portion 24 is substantially in the shape of an upwardly convex arch, and the radially outer edge of the deformation portion 24 is connected to the movable portion 23, and the bottom surface of the deformation portion 24 is located on the top surface of the second shoulder 15 of the support portion 13, that is, the second shoulder 15 can support the deformation portion 24. The center of the deformation portion 24 is a diaphragm aperture 21, and the diaphragm aperture 21 is aligned with the light-shielding aperture 16. When the radially outer edge of the deformation portion 24 is pulled downwardly and radially outwardly by the movable portion 23, the outer edge of the deformation portion 24 moves downwardly and causes the deformation portion 24 to abut the second shoulder 15, and the diaphragm aperture 21 of the deformation portion 24 is enlarged. It should be appreciated that the deformations 24 may also be wafer-shaped or otherwise shaped.

The carrier 3 is defined to be movable between a first position in which the rubber ring 2 is in a natural state and the abutment projections 32 of the carrier 3 abut against the bottom wall of the recess 231, at which time the top surface of the recess 231 is substantially flush with the top surface of the fixed portion 22, the deformed portion 24 and the movable portion 23 are both in a natural state, and the inner edge of the deformed portion 23 abuts against the second shoulder 15 and the outer edge is spaced from the first shoulder 14. When the carrier 3 moves downward to the second position, the concave area 231 is pressed by the abutment protrusion 32 to move downward, the deformation portion 23 is pressed by the abutment protrusion 32 to the radially inner wall of the connecting portion 12 to thin the thickness of the deformation portion 23, and the height of the concave area 231 is smaller than the height of the fixed portion 22, that is, the height of the concave area 231 in the first position is larger than the height of the concave area 231 in the second position, at this time, the deformation portion 24 is pulled and deformed radially outward by the movable portion 23, the outer edge of the deformation portion 24 abuts against the first shoulder 14, the inner edge abuts against the second shoulder 15, the aperture hole 21 becomes larger, and the diameter of the aperture hole 21 in the second position is larger than that in the first position.

Further, as a preferable scheme, the movable part 23 has a certain thickness in a natural state, so that the movable part 23 has a thinned space after being pressed. The thickness of the deformation portion 24 is smaller than that of the movable portion 23, so that the deformation portion 24 is conveniently pulled and deformed.

The loop wire 4 is ring-shaped and at least a part thereof is made of a memory alloy wire 41, and the memory alloy wire 41 is contractible when energized. The ring wire 4 is sleeved outside the carrier 3 and is respectively connected with the carrier 3 and the base 1, the carrier 3 can move downwards due to shrinkage of the ring wire 4 after the power is applied, namely, the carrier 3 is closer to the bottom plate 11, and accordingly the size of the aperture hole 21 is changed.

In one embodiment, the loop wire 4 may be formed by arranging a plurality of sections of spring wires 42 and a plurality of sections of memory alloy wires 41 in a colloid manner and connecting the sections of spring wires 42 end to end, and the plurality of sections of spring wires 42 have elasticity, so that the movement range of the carrier 3 along the vertical direction can be increased. In the embodiment shown in fig. 1-3, two sections of spring wires 42 and two sections of memory alloy wires 41 are alternately arranged and connected end to form a loop wire 4, and two ends of the spring wires 42 are respectively provided with an upward extending section, and the top ends of the extending sections are respectively connected with the memory alloy wires 41, that is, the memory alloy wires 41 and the spring wires 42 are not in a horizontal plane, the spring wires 42 are attached to the top surface of the bottom plate 11, and the memory alloy wires 41 and the bottom plate 11 are arranged at intervals.

The ring wire 4 is sleeved on the radial outer side of the carrier 3, the radial outer side of the carrier 3 is provided with two connecting protrusions 31, and two sections of memory alloy wires 41 are connected with the two connecting protrusions 31.

It should be understood that in other embodiments, only one length of spring wire 42 and one length of memory alloy wire 41 may be provided, end to end, to form loop wire 4, or more lengths of spring wire 42 and memory alloy wire 41 may form loop wire 4.

In addition, the inside of the base 1 is also provided with a built-in circuit, the spring wire 42 is directly positioned on the top surface of the bottom plate 11 and positioned at the outer edge of the bottom plate 11, and the spring wire 42 is connected with the bottom plate 11. The wire 42 is also electrically connected to the built-in wiring of the base 1. After the spring wire 42 is electrified, the memory alloy wire 41 can shrink and deform, so that the carrier 3 is driven to move towards the direction of the bottom plate 11 along the vertical direction, the aperture 21 of the rubber ring 2 is driven to be enlarged, and after the power is off, the memory alloy wire 41 returns to the original state, and both the carrier 3 and the rubber ring 2 are reset.

The aperture adjusting device adjusts the size of the aperture 21 through the rubber ring 2, so that the aperture adjusting device is compact in structure, light and space-saving, low in cost and capable of improving market competitiveness.

While the preferred embodiments of the present utility model have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.

These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of carrying out the utility model and that various changes in form and details may be made therein without departing from the spirit and scope of the utility model.

Claims (10)

1. An aperture adjusting device, comprising:

The base is provided with a light shielding hole;

The rubber ring is connected with the base, is annular and is provided with an aperture, and the aperture is aligned with the light-shielding hole;

A carrier, which is abutted with the rubber ring, and

The ring wire is made of a memory alloy wire and sleeved outside the carrier, the ring wire is respectively connected with the carrier and the base, and can drive the carrier to move in the vertical direction after being electrified, and the size of the aperture hole can be changed through the movement of the carrier.

2. The diaphragm adjusting apparatus according to claim 1, wherein said ring wire is formed by alternately arranging at least two segments of spring wire connected to said base and at least two segments of said memory alloy wire connected to said carrier end to end.

3. The diaphragm adjusting apparatus according to claim 2, wherein the loop wire is formed of two segments of the spring wire and two segments of the loop wire, and both ends of the spring wire are respectively provided with an extension segment extending upward, and a top end of the extension segment is connected with the memory alloy wire.

4. A diaphragm adjusting device according to claim 3, wherein the base comprises a base plate which is annular and provided with built-in wiring, and the spring wire is connected to the top surface of the base plate and electrically connected to the built-in wiring.

5. The diaphragm adjusting apparatus according to claim 1, wherein a radially outer side of the carrier is provided with a connecting protrusion, and the memory alloy wire is connected to the connecting protrusion.

6. A diaphragm adjusting device according to claim 3, wherein the rubber ring comprises, in order from the outside to the inside in the radial direction:

the fixing part is the radial outer edge of the rubber ring;

A movable part abutting against the carrier, and

The center of the deformation part is provided with the aperture;

The base also includes:

a bottom plate;

The connecting part is connected with the top surface of the bottom plate and extends along the circumferential direction of the bottom plate, and the connecting part is connected with the fixing part;

And the bottom end of the supporting part is connected to the top surface of the bottom plate, and the top end of the supporting part extends to the bottom surface of the deformation part and forms the light shielding hole.

7. The diaphragm adjusting apparatus of claim 6, wherein said support portion includes a first shoulder and a second shoulder, each of which is in the shape of an annular step and a bottom end of which is connected to said bottom plate, and a bottom end of which is connected to a top end of said first shoulder, the top end extending to a top surface of said deformation portion and forming said light shielding hole.

8. The diaphragm adjustment device of claim 7, wherein the projection of the second shoulder and the projection of the movable portion are offset.

9. The diaphragm adjusting apparatus of claim 6, wherein a top surface of said movable portion is provided with a recessed area;

The bottom of the carrier is provided with an abutting bulge abutting against the bottom wall of the concave area.

10. The diaphragm adjustment device of claim 6, wherein the deformation portion is entirely arched and has a thickness smaller than that of the movable portion.