CN218158663U - Piezoelectric driving type shutter, lens module and camera equipment - Google Patents

Abstract

The utility model relates to a piezoelectricity drive formula shutter, camera lens module and photographic equipment, wherein, piezoelectricity drive formula shutter includes the casing and installs piezoelectricity drive mechanism and adjustable fender in the casing, the casing is equipped with first unthreaded hole and camera lens installation department, the camera lens installation department is used for the installation camera lens, adjustable fender has the second and advances the unthreaded hole, piezoelectricity drive mechanism with the adjustable fender drive is connected, in order to drive adjustable fender switches between shading position and advancing the unthreaded position, wherein the shading position, adjustable fender hides first unthreaded hole, and advance the unthreaded position, first unthreaded hole with the second advances the unthreaded hole and aligns. The piezoelectric driving type shutter is compact in structure, small in occupied size, beneficial to miniaturization of the lens module, low in cost and convenient to assemble and control.

Description

Piezoelectric driving type shutter, lens module and camera equipment

Technical Field

The utility model relates to a camera field specifically relates to a piezoelectric drive formula shutter, lens module and photographic equipment.

Background

The shutter is usually arranged outside the lens, the shielding operation of the lens is realized through action, and when the shutter is pressed down, the shutter is opened to enable light to enter the lens; after the photographing is finished, the shutter is closed to shield the lens, and light cannot enter the lens.

The shutter is classified into a mechanical shutter and an electronic shutter. Mechanical shutters are divided into two main categories, pure mechanical drive and mechanical electromagnetic drive. The existing mechanical electromagnetic driving shutter has a relatively complex structure and a relatively large volume, and is not beneficial to the miniaturization of a camera.

Disclosure of Invention

The utility model aims at providing a piezoelectric drive formula shutter and lens module.

In order to achieve the above object, the utility model adopts the following technical scheme:

according to the utility model discloses an aspect provides a piezoelectric drive formula shutter, wherein, piezoelectric drive formula shutter includes the casing and installs piezoelectric drive mechanism and adjustable fender in the casing, the casing is equipped with first unthreaded hole and camera lens installation department, the camera lens installation department is used for the installation camera lens, adjustable fender has the second and advances the unthreaded hole, piezoelectric drive mechanism with the adjustable fender drive is connected, in order to drive adjustable fender switches between shading position and advancing the unthreaded position, wherein the shading position, adjustable fender hides first unthreaded hole, and advance the unthreaded position, first unthreaded hole with the second advances the unthreaded hole and aligns.

In a preferred embodiment, the piezoelectric driving mechanism comprises a balancing weight, a piezoelectric deformation block and a connecting piece which are sequentially and fixedly connected together, the connecting piece is in driving connection with the movable baffle, and the piezoelectric deformation block deforms under the power-on condition to drive the connecting piece to move linearly.

In a preferred embodiment, the piezoelectric driving type shutter further comprises a movable block, the movable block is installed in the housing, the movable baffle is fixed on the movable block, and the connecting piece is fixedly connected with the movable block.

In a preferred embodiment, the connector is a carbon rod.

In a preferred embodiment, the connecting member is fixed to the movable block by an elastic clamping assembly.

In a preferred embodiment, the elastic clamping assembly comprises a clamping plate and a spring plate, the clamping plate and the spring plate are fixed on the movable block, and the connecting piece is clamped between the clamping plate and the spring plate.

In a preferred embodiment, the clamping plate is a bending plate with a V-shaped cross section, and the spring leaf has a hollow structure.

In the preferred embodiment, the movable block has carbon-point mounting groove and splint mounting groove, the carbon-point mounting groove sets up the top surface of movable block is followed the length direction of movable block extends, connecting piece fixed mounting is in the carbon-point mounting groove, the splint mounting groove sets up on the width direction's of movable block top surface both sides, the width direction both sides of splint are provided with splint arch, the protruding joint of splint is in the splint mounting groove, the movable block is in the splint mounting groove is equipped with the reed spliced pole along length direction's both sides, be equipped with the connecting hole on the reed, the connecting hole cup joints on the reed spliced pole, the both ends of movable block are equipped with the follow the top surface perpendicular to of movable block the end wall that the length direction of movable block extends, be equipped with the guiding hole that link up in the end wall, the guiding hole coaxial each other and with carbon-point mounting groove intercommunication, just the connecting piece passes the guiding hole.

In a preferred embodiment, a mounting platform and a bearing platform extending outwards from the top are respectively arranged at two ends of the movable block in the length direction, a first baffle mounting groove and a second baffle mounting groove are respectively arranged on the mounting platform and the bearing platform, wherein a mounting protrusion is arranged in the first baffle mounting groove and used for being clamped with a mounting clamping groove on the movable baffle, and a glue dispensing groove is arranged in each of the first baffle mounting groove and the second baffle mounting groove and used for bonding the movable block and the movable baffle.

In a preferred embodiment, the housing includes a first base, a second base, and a cover, the lens mount portion is formed between the first base and the second base, the movable block and the piezoelectric driving mechanism are mounted in the first base, and the cover is provided with the first light inlet hole.

In a preferred embodiment, a movable block mounting groove is formed in the middle of the first base, the movable block is movably mounted in the movable block mounting groove along the length direction, a U-shaped support frame and a U-shaped support groove are respectively formed in two sides of the movable block mounting groove along the length direction, and the connecting piece is supported and limited by the U-shaped support frame and the U-shaped support groove.

In a preferred embodiment, the first base is further provided with a bearing platform avoiding groove, and the bearing platform avoiding groove is located at the top end of the U-shaped supporting groove.

In a preferred embodiment, the first base is further provided with a balancing weight mounting groove and a deformation block mounting groove, the deformation block mounting groove and the movable block mounting groove are respectively located on two sides of the U-shaped support frame, and the balancing weight and the piezoelectric deformation block are respectively installed in the balancing weight mounting groove and the deformation block mounting groove in a suspending manner.

In a preferred embodiment, the weight block mounting groove is provided with a first dispensing groove, and the first dispensing groove is used for dispensing and bonding the first base and the side wall of the weight block.

In a preferred embodiment, the first base is provided with a built-in circuit, one end of the built-in circuit is positioned on the outer side end face of the base to form a first power-on point for connecting with an external circuit, and the other end of the built-in circuit is positioned on two sides of the deformation block mounting groove to form a second power-on point for connecting with a connecting wire on the deformation block.

In a preferred embodiment, the first base and the second base are opposite to each other to form an arc notch, and the arc notch is used for avoiding the lens.

In a preferred embodiment, two sides of the top ends of the first base and the second base are provided with limiting protrusions, and the first limiting protrusions are used for limiting the movable baffle.

In a preferred embodiment, a second limiting protrusion is disposed on the first limiting protrusion, corresponding limiting recesses are disposed on two sides of the cover body to accommodate the second limiting protrusion, and the second limiting protrusion is used for limiting the cover body.

The piezoelectric driving type shutter is compact in structure, small in occupied size, beneficial to miniaturization of a lens module, low in cost and convenient to assemble and control.

According to the utility model discloses an on the other hand still provides a lens module, lens module includes camera lens and shutter, the shutter includes as above the piezoelectricity drive formula shutter.

According to still another aspect of the present invention, there is also provided a camera apparatus, wherein the camera apparatus includes the lens module as described above.

Drawings

Fig. 1 is a perspective view of a lens module according to an embodiment of the present invention;

FIG. 2 is another perspective view of the lens module shown in FIG. 1, with the cover and the lens removed;

fig. 3 is an exploded view of the lens module shown in fig. 1;

fig. 4 is a perspective view of a cover of the lens module shown in fig. 1;

FIG. 5 is a perspective view of a first base of the lens module shown in FIG. 1;

FIG. 6 is a perspective view of a second base of the lens module shown in FIG. 1;

fig. 7 is a perspective view of a piezoelectric driving mechanism of the lens module shown in fig. 1;

fig. 8 is an exploded view of a moving mechanism of the lens module shown in fig. 1;

FIG. 9 is a perspective view of a clamping assembly of the mobility mechanism shown in FIG. 8;

fig. 10 is a perspective view of a movable block of the movable mechanism shown in fig. 8.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solution of the invention.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that an embodiment can be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

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

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, the appearances of the phrase "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 sake of clarity, the structure and operation of the present invention will be described with the aid of directional terms, but the terms "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be understood as words of convenience and not as words of limitation.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1, fig. 1 is a perspective view of a lens module according to an embodiment of the present invention; FIG. 2 is another perspective view of the lens module shown in FIG. 1, with the cover and lens removed to show the internal structure; fig. 3 is an exploded view of the lens module shown in fig. 1. As shown in fig. 1 to 3, a lens module according to an embodiment of the present invention may include a piezoelectric-driven shutter and a lens 100. In the present embodiment, the lens 100 includes a lens mount. The piezoelectric driving type shutter may include a housing 1, and a piezoelectric driving mechanism 2 and a movable mechanism 3 installed in the housing 1. The housing 1 is provided with a first light inlet 111 and a lens mount 14, and the lens 100 is mounted in the lens mount 14 (14 is not found in the figure) and aligned with the first light inlet 111. The movable mechanism 3 includes a movable baffle 31, and the movable baffle 31 has a second light inlet 311. The piezoelectric driving mechanism 2 is in driving connection with the movable baffle 31 to drive the movable baffle 31 to switch between a light shielding position and a light inlet position; in the light shielding position, the movable baffle 31 shields the first light inlet 111 (or the lens 100), and in the light inlet position, the first light inlet 111 is aligned with the second light inlet 311. Specifically, when the shutter key is pressed, the piezoelectric driving mechanism 2 drives the movable shutter 31 to move from the light shielding position to the light entering position, that is, the shutter is opened, and light enters the lens 100 from the first light entering hole 111 and the second light entering hole 311; after the photographing is completed, the piezoelectric driving mechanism 2 drives the movable baffle 31 to move from the light inlet position to the light shielding position, that is, the shutter is closed, the movable baffle 31 shields the lens 100, and light cannot enter the lens 100. By controlling the acting voltage and time of the piezoelectric driving mechanism 2, the time for opening the shutter can be conveniently adjusted to adapt to professional photographing requirements. The piezoelectric driving type shutter is compact in structure, small in occupied size, beneficial to miniaturization of the lens module, low in cost and convenient to assemble and control.

In the present embodiment, the housing 1 may include a cover 11, a first base 12, and a second base 13. The cover 11 is in a substantially rectangular parallelepiped housing shape, as shown in fig. 3, and has a bottom and one end (the left end in fig. 3 is open), the top of the cover 11 is provided with a first light inlet 111, and the first base 12 and the second base 13 are located in the cover 11 and spaced apart from each other, and a lens mount 14 is formed therebetween. The cover 11 is fixedly connected (for example, by a clamping manner or a glue bonding manner) with the first base 12 and the second base 13 to form a hollow cavity, and the piezoelectric driving mechanism 2 and the movable mechanism 3 are disposed in the hollow cavity, specifically, between the first base 12 and a top plate of the cover 11.

As shown in fig. 3 to 8, the cover 11 includes a top panel 112, front and rear side panels 113, and a right side panel 114. The first light inlet hole 111 is formed in the top plate 112. The front and rear side plates 113 are formed with notches at the lens mount portion 14 to escape the lens 100. The first light inlet hole 111 is rectangular. In addition, the top plate 112 is provided at both sides thereof with limiting recesses 115 which are engaged with the second limiting protrusions 122 and 132 of the first base 12 and the second base 13. The limit notch 115 has a U-shape. The right side plate 114 is spaced apart from the front and rear side plates 113 to provide a limit rib 133 disposed at both sides of the right end of the second base 13. The right side plate 114 abuts on the right end surface of the second chassis 13. It should be understood that the cover 11 is not limited to the above shape as long as it can be fixedly connected with the first base 12 and the second base 13 and form a space for accommodating the piezoelectric driving mechanism 2 and the movable mechanism 3. For example, the front or rear side panel of the cover 11 may be omitted.

The first chassis 12 and the second chassis 13 are respectively disposed at both sides of the lens 100, and their opposite surfaces form an arc gap for receiving the lens 100. The two sides of the top of the right end of the first base 12 and the two sides of the top of the left end of the second base are both provided with first limiting protrusions 121 and 131 extending along the length direction, and the first limiting protrusions are used for limiting the movable baffle plate 31. The height of the first limiting protrusions 121 and 131 is greater than the thickness of the movable baffle 31, so that the bottom surface of the cover 11 can be supported, and the movable baffle 31 is prevented from being extruded by the bottom surface of the cover 11. Second position-limiting projections 122 and 132 are provided on the top surfaces of the first position-limiting projections 121 and 131 for positioning the lid body 11 in cooperation with the positioning recesses 115. The second limit projections 122 and 132 are substantially the same in size and shape as the limit recesses 115 of the cover 11; and the height of the second limit projections 122 and 132 is substantially the same as the thickness of the top plate 112, so that when the cover 11 is fixed with the first base 12 and the second base 13, the second limit projections 122 and 132 are flush with the upper surface of the cover 11, so that the whole housing 1 has a neat appearance. The bottom ends of the outer sides of the first base 12 and the second base 13 are both provided with glue dispensing grooves 120 and 130, and after the cover 11 is sleeved on the outer sides of the first base 12 and the second base 13, the cover 11 is adhered to the bases (the first base 12 and the second base 13) by dispensing glue in the glue dispensing grooves 120 and 130. It should be understood that other types of limiting structures can be formed between the first base 12 and the cover 11 to position the cover 11 relative to the first base 12, and are not limited to the second limiting protrusions 122 and 132 and the limiting notch 115. For example, recesses may be formed on the top surfaces of the first stopper projections 121 and 131, and corresponding protrusions may be formed on the bottom surface of the cover 11.

The first base 12 is a structure with a lower middle and two higher sides along the length direction, and includes a bottom plate and two end portions extending upward at two ends of the bottom plate in the length direction. The middle part of the first base 12, namely the bottom plate, is provided with a movable block mounting groove 123 extending along the length direction, which is used for mounting the movable block 32, the movable block 32 can move along the length direction in the movable block mounting groove 123, and two ends are respectively located at two ends of the movable block mounting groove 123. The first base 12 is provided with a U-shaped support bracket 124, a deformation block mounting groove 125 and a counter weight block mounting groove 126 in sequence along the length direction on the left side of the movable block mounting groove 123. The U-shaped support 124 is disposed generally perpendicular to the length direction, and two arms of the U-shaped support 124 extend upwardly from the base plate with a receiving area formed therebetween. A deformation block mounting groove 125 and a balancing weight mounting groove 126 are formed in the left end portion and are both opened upward and penetrate each other in the length direction. The first base 12 is provided with a U-shaped supporting groove 127 at the right side of the movable block mounting groove 123, the U-shaped supporting groove 127 is formed by recessing from the right side end portion toward the end surface of the movable block mounting groove 123, the cross-sectional direction thereof is U-shaped and opened toward the top, and the right side surface of the U-shaped supporting groove 127 is preferably provided with a hollowed-out hole 128. The U-shaped supporting frame 124 and the U-shaped supporting groove 127 are located at two ends of the movable block mounting groove 123 and are used for supporting and limiting the friction rod 23, and the friction rod 23 is prevented from being deviated in the moving process. The groove widths of the U-shaped support bracket 124 and the U-shaped support groove 127 are substantially the same as the diameter of the friction bar 23. The deformation block mounting groove 125 and the weight block mounting groove 126 are used for mounting the piezoelectric deformation block 22 and the weight block 21, respectively. The hollow-out hole 128 is used for avoiding the friction rod 23, and when the friction rod 23 moves rightwards, the hollow-out hole 128 can be entered. The diameter of the hollow 128 is substantially the same as the diameter of the friction bar 23. The first dispensing slot 1212 is disposed at the left side of the counterweight block mounting slot 126 for dispensing and bonding the first base 12 and the sidewall of the counterweight block 21. A connecting protrusion 1213 is preferably disposed in the first dispensing slot 1212, which increases the bonding area between the first base 12 and the side wall of the weight 21, thereby improving the bonding stability.

The first chassis 12 is provided with a bearing platform avoiding groove 129 above the U-shaped supporting groove 127, the bearing platform avoiding groove 129 is formed by recessing downward from the top surface of the right side end portion, and the width thereof is greater than the width of the U-shaped supporting groove 127, so that supporting shoulders are formed at both sides of the bottom surface of the bearing platform avoiding groove 129. When the movable block 32 moves to the right side of the movable block mounting groove 123, the bearing platform 322 on the movable block 32 extends into the bearing platform avoiding groove 129, so that the moving range of the movable block 32 can be enlarged.

The second base 13 is substantially L-shaped and is substantially mirror-symmetrical to the right end portion of the first base 12. The second base 13 has a stopper projection 134 extending in the width direction at the top right end thereof, and the stopper projection 134 is used for limiting the moving range of the shutter 31 in the length direction and for supporting the bottom surface of the cover 11. That is, the height of the stopping protrusion 134 is the same as the height of the first stopper protrusion 131 of the second base 13.

The cover 11, the first base 12 and the second base 13 can be made by extrusion molding or injection molding to realize mass production and reduce cost.

As shown in fig. 3, 5 and 10, the two end wall surfaces of the movable block mounting groove 123 of the first base 12 are provided with buffer blocks 1214, and the buffer blocks 1214 are used for matching with the corresponding buffer blocks 327 at the two ends of the movable block 32, so as to avoid the vibration and damage caused by hard collision between the movable block 32 and the first base 12, thereby prolonging the service life.

Further, as shown in fig. 3, 5 and 7, the left side of the first base 12 is internally provided with a built-in wiring, one end of which is located on the left side end face of the first base 12, forming a first power-on point 1210 for connecting with an external circuit (e.g., a control unit of a camera); the other end of the built-in wire is positioned at both sides of the deformation block mounting groove 125 to form a second electrifying point 1211 for connecting with the connecting wire 221 on the piezoelectric deformation block 22. The built-in circuit is generally injected into the first base 12 when the first base 12 is molded, and the first base 12 is provided with a built-in circuit positioning protrusion which protrudes from the bottom surface of the first dispensing groove 1212 and is used for positioning operation when the built-in circuit is injected, and the built-in circuit is covered after glue is applied in the first dispensing groove 1212.

The piezoelectric driving mechanism 2 obtains a driving force by utilizing an inverse piezoelectric effect of a piezoelectric material, and the structure thereof can be designed as required. Specifically, as shown in fig. 3, 5 and 7, the piezoelectric driving mechanism 2 may include a weight 21, a piezoelectric deformation block 22 and a connecting member 23 connected together in this order in the length direction. In the illustrated embodiment, the weight 21 and the piezoelectric deformation block 22 have a rectangular parallelepiped shape, and the connecting member 23 has a round bar shape. Therefore, the connecting piece 23 is also referred to as a friction bar 23 herein. Preferably, the friction bar 23 is a carbon bar so that the friction bar 23 has a greater friction force. The weight 21 and the piezoelectric deformation block 22 are respectively installed in the weight mounting groove 126 and the deformation block mounting groove 125 of the first base 12. Specifically, in the present embodiment, the piezoelectric deformation block 22 is disposed in the deformation block mounting groove 125 in a suspension manner, and the weight block 21 is also disposed in the weight block mounting groove 126 in a suspension manner. That is, in the piezoelectric driving mechanism 2, only the bottom surface of the friction bar 23 contacts with the U-shaped support frame 124 and the U-shaped support groove 127 of the first base 12, and plays a role of support. That is, both the weight block 21 and the piezoelectric deformation block 22 are supported by the supporting force of the friction bar 23. Of course, the deformation block mounting groove 125 and the weight block mounting groove 126 of the first base 12 also limit the outer sides of the piezoelectric deformation block 22 and the weight block 21 in the width direction, and only do not support the bottoms thereof. The left end wall of the weight member 21 is fixedly connected to the first base 12 by dispensing glue into the first glue dispensing groove 1212. The two sides of the piezoelectric deformation block 22 are provided with connecting lines 221 and are connected with second electrifying points on the first base 12 through the connecting lines 221. The piezoelectric deformation block 22 drives the friction rod 23 to move after being electrified and deformed, so that the movable mechanism 3 is driven to move, and the lens 100 is opened and shielded.

As shown in fig. 3-10, the moving mechanism 3 may include a flapper 31, a movable block 32, a clamp plate 33, and a spring plate 34. The flapper 31 is of a long strip-shaped plate structure, and includes a first flapper portion (also referred to as a left portion) 31a and a second flapper portion (also referred to as a right portion) 31b, wherein the first flapper portion 31a is fixed to the movable block 32, and the second flapper portion 31b extends beyond the movable block 32. In this embodiment, the movable baffle 31 has a diameter-variable structure. Specifically, the first baffle plate portion 31a of the movable baffle plate 31 has a small width, and is matched with the baffle plate installation groove on the movable block 32 to realize limiting; and the second blocking plate portion 32b of the flapper 31 has a large width and is engaged with the first stopper protrusions 121 and 131 at the top ends of the first base 12 and the second base 13 to perform a stopper so as to move therebetween in the length direction. The left end of the movable baffle 31 is provided with a mounting slot 312 for accommodating the mounting protrusion 3213 on the movable block 32. The right portion 31b of the movable baffle 31 is provided with a second light inlet 311. When light needs to enter, the second light entering hole 311 is located above the lens 100 and corresponds to the first light entering hole 111 arranged on the cover 11; after the photographing is finished, the second light inlet 311 is shifted from the lens by the movement of the movable barrier 31, and the blocking operation for the lens 100 is realized.

The movable block 32 is a structure having a concave portion in the middle and two high ends in the length direction, and includes two end walls extending upward perpendicular to the length direction at the two ends of the movable block 32, as shown in fig. 10. The movable block 32 is provided with a mounting platform 321 and a bearing platform 322 at the top of the two ends in the length direction (or the movement direction). The top surfaces of the mounting platform 321 and the load-bearing platform 322 are both provided with baffle mounting grooves (i.e., a first baffle mounting groove 3211 and a second baffle mounting groove 3221) for spacing the installation of the movable baffle 31. Corresponding glue dispensing grooves (second glue dispensing grooves 3212 and 3222) are arranged in the first baffle mounting groove 3211 and the second baffle mounting groove 3221, and are used for bonding the movable block 32 and the movable baffle 31 together. The depth of the second dispensing grooves 3212 and 3222 is generally less than 0.5mm. The bottom surface of the baffle mounting groove (i.e., the first baffle mounting groove 3211) of the mounting platform 321 is provided with a mounting protrusion 3213 for engaging with the mounting slot 312 on the movable baffle 31. The mounting platform 321 and the bearing platform 322 extend outwards from the top of the end walls at the two ends of the movable block 32, so that the supporting area between the movable block 32 and the movable baffle 31 can be increased, and the connecting structure between the two is more stable.

The movable block 32 is provided with a carbon rod mounting groove 323 extending in a length direction and a guide hole 324 penetrating both end walls, and the carbon rod mounting groove 323 is communicated with the guide hole 324. The carbon rod mounting groove 323 and the guide hole 324 are used for mounting the friction rod 23 of the piezoelectric driving mechanism 2. The movable block 32 is provided with clamp plate mounting grooves 325 on both sides in the width direction of the top surface, that is, the clamp plate mounting grooves 325 are provided on both sides of the carbon rod mounting groove 323 and orthogonally communicate with the carbon rod mounting groove 323. The both sides bottom of the splint mounting groove 325 has a two-step structure, and specifically, the splint mounting groove 325 is formed by forming a rectangular depression area by downwardly depressing the top surface of the movable block 32 at both sides of the splint mounting groove 325, and then forming another rectangular depression having a shorter length and outwardly offset near the side length of the splint mounting groove at the bottom of the rectangular depression area, thereby forming two steps at both ends of the length direction of the splint mounting groove 325 to facilitate the installation of the splint 33. The movable block 32 is provided with a spring attachment post 326 at both sides of the clamping plate installation groove 325 in the length direction for attaching the spring 34. The upper portion of the reed connecting post 326 is frustoconical to facilitate installation of the reed 34. The outer diameter of the lower portion of the reed connecting post 326 is typically slightly larger than the reed connecting hole 343 of the reed 34 to ensure a secure connection. It should be understood that the connection manner of the clamping plate 33 and the movable block 32 and the connection manner of the spring plate 34 and the movable block 32 are not limited by the above-described specific manner as long as the connection with each other can be achieved.

In addition, the two sides of the bottom of the movable block 32 are provided with positioning notches 328, which facilitates positioning during production and reduces weight.

The movable block 32 is typically made of plastic and may be integrally formed using, for example, an extrusion molding process or an injection molding process.

The clamping plate 33 is a bent plate having a V-shaped cross section to sandwich the friction bar 23. The included angle between the two halves of the clamping plate 33 is typically between 80-110 degrees and the included angle is rounded. Each half of the clamping plate 33 comprises three rectangular portions which are symmetrically shortened in length from the inside to the outside in sequence, so that two sides form a three-step structure respectively. The included angle between each part is rounded to avoid easy fracture due to stress concentration, and further influence the service life. The clamping plate 33 may be made of an elastic material. Among them, the outermost portion is referred to as a chucking protrusion 331. When installed, the clamping plate protrusion 331 is snapped into the clamping plate mounting groove 325 of the movable block 32, and the remaining portion of the clamping plate 33 is positioned in the carbon rod mounting groove 323 of the movable block 32.

The spring 34 includes a holding portion 341 in the middle of the width and extending in the length direction and four connecting portions 342 extending from the holding portion 341 to both sides. Wherein the end of each connecting portion 342 has a reed connecting hole 343, and the reed connecting hole 343 is used to mate with the reed connecting post 326 of the movable block 32 to fix the reed 34 to the movable block 32. Preferably, the reed connecting hole 343 and the reed connecting post 326 are interference fit to avoid falling off. The connecting portion 342 has an hollowed-out structure to reduce its weight. Specifically, each connecting portion 342 includes a multi-fold curved rib 3421 and a connecting piece 3422, wherein the multi-fold curved rib 3421 is connected to the holding portion 341 at one end and connected to the connecting piece 3422 at the other end. In the illustrated embodiment, the multi-fold curved rib 3421 is bent by 10 pieces to make the two ends of the rib staggered by a certain distance in the length direction and the width direction of the spring plate 34, so that the connecting pieces 3422 are located at the four corners of the spring plate 34. The spring 34 can be made of a resilient metal or non-metal material. When the friction rod 23 is installed, the friction rod 23 is positioned between the spring plate 34 and the clamping plate 33, and the friction rod 23 is fixedly connected with the movable block 32 through the elastic force of the spring plate 34 and the clamping plate 33. Therefore, the friction bar 23 can move the movable block 32. It should be understood that the spring plate 34 is not limited to the above-described structure as long as it has elasticity and can be fixed to the movable block 32 on both sides and cooperate with the clamping plate 33 to sandwich the friction bar 23 therebetween.

In this embodiment, the friction bar 23 is fixed to the movable block 32 by a clamp plate 33 and a spring 34. It should be understood that the friction bar 23 may be secured to the movable block 32 by other means (e.g., snap fit, threaded connection, screw fixation, etc.).

The following describes the installation process of the lens module. Firstly, the piezoelectric driving mechanism 2 is fixedly installed with the movable block 32 through the clamping plate 33 and the spring 34; then, the two are installed together in the first base 12 and glue is poured into the first glue pouring groove 1212, so that the balancing weight 21 is fixedly connected with the first base 12; then, glue is dispensed into the second glue dispensing grooves 3212 and 3222, and the movable baffle 31 is fixedly arranged on the movable block 32; then the connecting wire 221 of the piezoelectric deformation block 22 is welded with the second electrifying point on the first base 12; then, covering the cover body 11 on the first base 12 and the second base 13, and dispensing glue in the corresponding glue dispensing grooves to enable the cover body 11, the first base 12 and the second base 13 to form a whole; finally, the lens 100 is mounted on the lens mount 14. The whole installation process is very simple and convenient, and no extra tool is needed basically.

In addition, according to another embodiment of the present invention, there is also provided a photographing apparatus including the lens module as above. The camera device can be a camera, a mobile phone with a camera function, a tablet computer, a monitoring camera and the like.

The preferred embodiments of the present invention have been described in detail, but it should be understood that various changes and modifications of the invention can be made by those skilled in the art after reading the above teaching of the present invention. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims (20)

1. The piezoelectric driving type shutter is characterized by comprising a shell, a piezoelectric driving mechanism and a movable baffle, wherein the piezoelectric driving mechanism and the movable baffle are installed in the shell, the shell is provided with a first light inlet hole and a lens installation part, the lens installation part is used for installing a lens, the movable baffle is provided with a second light inlet hole, the piezoelectric driving mechanism is in driving connection with the movable baffle so as to drive the movable baffle to switch between a shading position and a light inlet position, the shading position is that the movable baffle covers the first light inlet hole, the light inlet position is that the first light inlet hole is aligned with the second light inlet hole.

2. The piezoelectric driving type shutter according to claim 1, wherein the piezoelectric driving mechanism comprises a weight block, a piezoelectric deformation block and a connecting piece, wherein the weight block, the piezoelectric deformation block and the connecting piece are sequentially and fixedly connected together, the connecting piece is in driving connection with the movable baffle, and the piezoelectric deformation block deforms under the condition of being electrified to drive the connecting piece to move linearly.

3. The piezoelectrically actuated shutter of claim 2 further comprising a movable block mounted within the housing, the flapper being fixed to the movable block and the connector being fixedly connected to the movable block.

4. The piezoelectric-driven shutter according to claim 3, wherein the connecting member is a carbon rod.

5. The piezoelectric-driven shutter according to claim 4, wherein the connecting member is fixed to the movable block by an elastic clamp member.

6. The piezoelectric-driven shutter according to claim 5, wherein the elastic clamp assembly comprises a clamp plate and a spring plate, the clamp plate and the spring plate being fixed to the movable block, the connecting member being clamped between the clamp plate and the spring plate.

7. The piezoelectric driving type shutter according to claim 6, wherein the clip is a bent plate having a V-shaped cross section, and the spring plate has a hollowed-out structure.

8. The piezoelectric drive type shutter according to claim 6, wherein the movable block has a carbon rod mounting groove and a clamp plate mounting groove, the carbon rod mounting groove is provided on the top surface of the movable block and extends along the length direction of the movable block, the connecting member is fixedly mounted in the carbon rod mounting groove, the clamp plate mounting groove is provided on both sides of the width direction of the top surface of the movable block, the width direction both sides of the clamp plate are provided with clamp plate protrusions, the clamp plate protrusions are clamped in the clamp plate mounting groove, the movable block is in the clamp plate mounting groove, the clamp plate mounting groove is provided with a reed connecting column along both sides of the length direction, the reed is provided with a connecting hole, the connecting hole is sleeved on the reed connecting column, the two ends of the movable block are provided with a guide hole perpendicular to the top surface of the movable block, the end wall of the length direction of the movable block extends, the end wall is provided with a through guide hole, the guide hole is coaxial with each other and communicated with the carbon rod mounting groove, and the connecting member passes through the guide hole.

9. The piezoelectric driving type shutter according to claim 4, wherein a mounting platform and a bearing platform extending outward from the top are respectively disposed at two ends of the movable block in the length direction, and a first baffle mounting groove and a second baffle mounting groove are respectively disposed on the mounting platform and the bearing platform, wherein a mounting protrusion is disposed in the first baffle mounting groove and used for being engaged with a mounting groove on the movable baffle, and a glue dispensing groove is disposed in each of the first baffle mounting groove and the second baffle mounting groove and used for bonding the movable block and the movable baffle.

10. The piezoelectric-driven shutter according to claim 9, wherein the housing includes a first base, a second base, and a cover, the first base and the second base forming the lens mount therebetween, the movable block and the piezoelectric driving mechanism being mounted in the first base, the cover being provided with the first light entrance hole.

11. The piezoelectric-driven shutter according to claim 10, wherein a movable block mounting groove is formed in a middle portion of the first base, the movable block is movably mounted in the movable block mounting groove in a length direction, a U-shaped support frame and a U-shaped support groove are respectively formed in the movable block mounting groove on both sides in the length direction, and the connecting member is supported and limited by the U-shaped support frame and the U-shaped support groove.

12. The piezoelectric-driven shutter according to claim 11, wherein the first base is further provided with a load-bearing platform avoiding groove which is located above the U-shaped support groove.

13. The piezoelectric driving shutter according to claim 11, wherein the first base is further provided with a weight block mounting groove and a deformation block mounting groove, the deformation block mounting groove and the movable block mounting groove are respectively located on both sides of the U-shaped support frame, the weight block mounting groove is located on one side of the deformation block mounting groove away from the U-shaped support frame, and the weight block and the piezoelectric deformation block are respectively mounted in the weight block mounting groove and the deformation block mounting groove in a suspended manner.

14. The piezoelectric driving shutter according to claim 13, wherein the weight mounting groove is provided with a first dispensing groove for dispensing and adhering the first base to a side wall of the weight.

15. The piezoelectric-driven shutter according to claim 13, wherein the first base is provided with a built-in wiring, one end of which is located on an outer end face of the base to form a first energization point for connection with an external circuit, and the other end of which is located on both sides of the deformation block mounting groove to form a second energization point for connection with a connection wire on the deformation block.

16. The piezoelectric driven shutter according to claim 10, wherein the first base and the second base face each other to form a circular arc notch for avoiding a lens.

17. The piezoelectric driving type shutter according to claim 10, wherein first limiting protrusions are provided on both sides of the top ends of the first base and the second base, and the first limiting protrusions are used for limiting the movable shutter.

18. The piezoelectric driven shutter according to claim 17, wherein the first limiting protrusion is provided with a second limiting protrusion, and both sides of the cover are provided with corresponding limiting notches for accommodating the second limiting protrusion, and the second limiting protrusion is used for limiting the cover.

19. A lens module, characterized in that the lens module comprises a lens and a shutter, the shutter comprising a piezo-actuated shutter according to any one of claims 1-18.

20. A photographing apparatus comprising the lens module according to claim 19.

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