Efficient-installation electric lens mechanism and projection equipment comprising same

Abstract

The invention discloses an efficiently-installed electric lens mechanism and projection equipment comprising the same. The electric lens mechanism comprises a base, a motor, a cam cylinder, a lens assembly and a lens group sliding bolt. Wherein the base is used for being connected with external equipment, the motor is used for driving the cam cylinder to rotate in the base, and the lens group sliding bolt enables the cam cylinder and the lens assembly to be movably connected with each other. When the cam cylinder rotates, the lens assembly can be driven to extend outwards or contract, so that the adjustment of the focal length is completed. The cam cylinder is hidden in the fixed cylinder, and the gear of the motor can extend into the fixed cylinder and is meshed with the cam cylinder, so that exposure of the gear mechanism is reduced as much as possible, and the influence of external dust or impurities on gear meshing is reduced. Moreover, the lens assembly is provided with a plurality of bolt locking holes, and the bolt locking holes can be selected to lock the lens group sliding bolt, thereby improving the assembly efficiency. The invention relates to the technical field of lenses.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lenses, in particular to an efficient installation of an electric lens mechanism and a projection device comprising the same. BACKGROUND

[0002] With the gradual improvement of consumer requirements for projection devices, the structure of the lens, which is the most critical component of the projection device, has become increasingly complex. Especially for variable focus lenses, there are more moving parts, and the change process of the focal length is more accurate, which undoubtedly puts higher requirements on the structural design and assembly precision of such variable focus lenses.

[0003] At present, the telescopic zoom of the lens generally adopts a gear mechanism for transmission. The gear mechanism has the advantages of compact structure and high transmission precision, and is particularly suitable for the field of zoom lenses. Moreover, some variable focus lenses are also equipped with motors, and the motors also drive the lens to telescope through the gear mechanism.

[0004] Although the gear mechanism has the advantage of high precision, it is extremely susceptible to environmental influences. Once dust or impurities are stuck in the meshing part of the gear, the gear mechanism is prone to jamming or even direct damage to the meshing surface of the gear. In addition, the internal structure of the current variable focus lens is complex, and when a driving part such as a motor is introduced, the number of parts of the lens increases dramatically, which undoubtedly increases the assembly difficulty and puts higher requirements on the technology of the assembly workers. SUMMARY

[0005] The present application aims to at least solve one of the above-mentioned technical problems in the prior art. To this end, the present application provides an efficient installation of an electric lens mechanism, which can reduce the influence of external environment on the gear mechanism and reduce the assembly difficulty of the lens.

[0006] The present application also provides a projection device comprising the above-mentioned efficient installation of an electric lens mechanism.

[0007] According to the first aspect of the present application, the efficient installation of the electric lens mechanism comprises: a base comprising a fixed cylinder, a gear avoiding slot and a first limiting slot are formed on the side surface of the fixed cylinder, and the first limiting slot is formed along the axial direction of the fixed cylinder; a motor installed on the outside of the fixed cylinder, a rotating shaft of the motor is installed with a gear, and the gear can partially pass through the gear avoiding slot; a cam cylinder rotatably installed in the fixed cylinder, a gear rack and a second limiting slot are formed on the side surface of the cam cylinder, the gear rack is formed along the circumferential direction of the cam cylinder and can be engaged with the gear, and the extension direction of the second limiting slot and the circumferential direction of the cam cylinder form an acute angle; A lens assembly is disposed inside the cam cylinder. The side of the lens assembly has multiple bolt mounting holes, which are arranged in a circular array around the central axis of the lens assembly. A lens assembly sliding bolt passes through the first limiting groove and the second limiting groove and connects to the bolt locking hole on the lens assembly; When the cam cylinder rotates, the lens assembly slide bolt can move along the first limiting groove under the drive of the second limiting groove.

[0008] The efficient motorized lens mechanism according to the embodiments of this application has at least the following advantages: the cam cylinder is concealed within the fixed cylinder, and the motor gear can extend into the fixed cylinder and mesh with the cam cylinder, thereby minimizing the exposure of the gear mechanism and reducing the impact of external dust or impurities on gear meshing. Furthermore, the lens assembly is provided with multiple bolt locking holes, allowing selection of one of these holes to lock the lens assembly slide bolt, thereby improving assembly efficiency.

[0009] According to some embodiments of this application, the base further includes a flange seat, which is connected to the fixed cylinder and is used for fixed connection with external equipment.

[0010] According to some embodiments of this application, the efficient motorized lens mechanism further includes electronic components mounted on the outside of the fixed cylinder and electrically connected to the motor.

[0011] According to some embodiments of this application, both the electronic device and the fixing cylinder are equipped with magnets, and the electronic device can be attracted to the fixing cylinder by the magnets in order to fix the electronic device.

[0012] According to some embodiments of this application, the lens assembly slide bolt can be connected to some or all of the bolt locking holes.

[0013] According to some embodiments of this application, the number of bolt locking holes is four.

[0014] According to some embodiments of this application, a limiting post is provided on the side of the lens assembly, and the fixing cylinder has a limiting post sliding groove extending along its axial direction, and the limiting post can slide into the limiting post sliding groove.

[0015] According to some embodiments of this application, the efficient mounted motorized lens mechanism further includes a limiting mechanism connected to the cam cylinder so that the cam cylinder can only rotate in its circumferential direction.

[0016] According to some embodiments of this application, the limiting mechanism is a cam cylinder slide bolt, and a cam cylinder limiting groove is provided on the side of the fixed cylinder. The cam cylinder limiting groove is opened along the circumferential direction of the fixed cylinder, and the cam cylinder slide bolt passes through the cam cylinder limiting groove and is connected to the cam cylinder.

[0017] A projection device according to a second aspect embodiment of this application includes a projection device body and the aforementioned highly efficient motorized lens mechanism, wherein the highly efficient motorized lens mechanism is mounted to the projection device body.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] The accompanying drawings are used to provide a further understanding of the technical solutions disclosed in this application and form part of the specification. They are used together with the embodiments disclosed in this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions disclosed in this application.

[0020] Figure 1 A three-dimensional disassembled view of the motorized lens mechanism for efficient installation according to the first aspect of this application; Figure 2 This is a cross-sectional disassembly view of the motorized lens mechanism for efficient installation according to the first aspect of this application.

[0021] Reference numerals: 100-base, 110-fixed cylinder, 111-gear clearance groove, 112-first limiting groove, 113-limiting post sliding groove, 114-cam cylinder limiting groove, 120-flange seat, 200-motor, 210-gear, 300-cam cylinder, 310-rack, 320-second limiting groove, 400-lens assembly, 410-bolt locking hole, 420-limiting post, 500-lens assembly sliding bolt, 600-electronic components, 700-cam cylinder sliding bolt. Detailed Implementation

[0022] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0023] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0025] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0026] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] As consumers' demands for projection equipment gradually increase, the structure of the lens—the most critical component of projection equipment—is becoming increasingly complex. This is especially true for zoom lenses, which have even more moving parts and require more precise focal length changes, undoubtedly placing higher demands on the structural design and assembly precision of such lenses.

[0028] Currently, zoom lenses generally use gear mechanisms for transmission. The advantages of gear mechanisms are their compact structure and high transmission precision, making them particularly suitable for zoom lenses. Furthermore, some zoom lenses also incorporate a motor, which also drives the lens's extension and retraction via a gear mechanism.

[0029] While gear mechanisms offer the advantage of high precision, they are also extremely susceptible to environmental influences. Dust or impurities stuck at the gear meshing points can easily cause jamming or even directly damage the gear meshing surfaces. Furthermore, the internal structure of current zoom lenses is complex. The introduction of motors and other drive components has dramatically increased the number of lens parts, undoubtedly raising assembly difficulty and demanding higher skill levels from assembly workers.

[0030] To address this issue, this application proposes a highly efficient motorized lens mounting mechanism. The cam cylinder is concealed within a fixed cylinder, allowing the motor's gears to extend into the fixed cylinder and mesh with the cam cylinder. This minimizes the exposure of the gear mechanism and reduces the impact of external dust or impurities on gear meshing. Furthermore, the lens assembly is equipped with multiple bolt locking holes, allowing selection of these holes to lock the lens assembly's sliding bolts, thereby improving assembly efficiency.

[0031] In addition, this application also proposes a projection device that includes the aforementioned highly efficient motorized lens mechanism.

[0032] Reference Figure 1 and Figure 2 The efficient motorized lens mechanism in the first aspect embodiment of this application includes a base 100, a motor 200, a cam cylinder 300, a lens assembly 400, and a lens group slide bolt 500. The base 100 is used for connection to external devices, and all other components of the efficient motorized lens mechanism are mounted on the base 100. The motor 200 drives the cam cylinder 300 to rotate within the base 100, and the lens group slide bolt 500 enables the cam cylinder 300 and the lens assembly 400 to be movably connected. When the cam cylinder 300 rotates, it can drive the lens assembly 400 to extend or retract outward, thereby adjusting the focal length.

[0033] Specifically, the base 100 includes a fixed cylinder 110, and the side of the fixed cylinder 110 is provided with a gear clearance groove 111 and a first limiting groove 112, and the first limiting groove 112 is provided along the axial direction of the fixed cylinder 110.

[0034] The motor 200 is mounted on the outside of the fixed cylinder 110. The rotating shaft of the motor 200 is equipped with a gear 210. The gear 210 can partially pass through the gear clearance groove 111 and thus enter the interior of the fixed cylinder 110.

[0035] The cam cylinder 300 is rotatably mounted inside the fixed cylinder 110. A rack 310 and a second limiting groove 320 are provided on the side of the cam cylinder 300. The rack 310 is circumferentially oriented and can mesh with the gear 210, so that when the gear 210 rotates, it can drive the cam cylinder 300 to rotate. It is worth noting that the extension direction of the second limiting groove 320 forms an acute angle with the circumferential direction of the cam cylinder 300.

[0036] The lens assembly 400 is disposed inside the cam cylinder 300. Multiple bolt mounting holes 410 are provided on the side of the lens assembly 400, arranged in a circular array around the central axis of the lens assembly 400. The lens assembly slide bolt 500 passes through the first limiting groove 112 and the second limiting groove 320 and connects to the bolt mounting holes 410 on the lens assembly 400. The lens assembly slide bolt 500 can be connected by a plug-in connection, bolt connection, or snap-fit ​​connection.

[0037] When the cam cylinder 300 rotates under the drive of the motor 200, the lens assembly slide bolt 500 can move along the first limit groove 112 under the drive of the second limit groove 320, thereby enabling the lens assembly 400 to move along the axial direction of the fixed cylinder 110.

[0038] Furthermore, the base 100 also includes a flange seat 120, which is connected to the fixed cylinder 110 and is used for fixed connection with external equipment.

[0039] Furthermore, this highly efficient motorized lens mechanism also includes an electronic component 600, which is mounted on the outside of the fixed cylinder 110 and electrically connected to the motor 200. This allows for the integration of more components on the base 100, enhancing the functionality of the base 100, reducing the number of parts during assembly, and improving assembly efficiency.

[0040] Optionally, magnets are installed on both the electronic component 600 and the fixing cylinder 110, allowing the electronic component 600 to be magnetically attached to the fixing cylinder 110 for secure fixation. During assembly, the electronic component 600 can be pre-installed on the fixing cylinder 110 using the magnets, after which the assembly worker can use bolts to tighten and secure it. The magnets serve to assist in fixing and guiding the assembly position, further improving assembly efficiency.

[0041] Furthermore, the lens assembly slide bolt 500 can connect to some or all of the bolt locking holes 410. Thus, when the lens assembly 400 is installed into the cam cylinder 300, the lens assembly slide bolt 500 can be screwed in and secured regardless of which bolt locking hole 410 aligns with the first limiting groove 112 or the second limiting groove 320. On the one hand, assembly workers no longer need to align a specific bolt locking hole 410; they can choose one for installation. On the other hand, if some bolt locking holes 410 cannot be installed, other bolt locking holes 410 can be replaced for installation, eliminating the need for rework of the lens assembly 400 and improving installation efficiency to some extent.

[0042] Specifically, in this embodiment, there are four bolt locking holes 410 and two lens group sliding bolts 500, and the two bolt locking holes 410 located in opposite positions are installed.

[0043] Furthermore, the lens assembly 400 has a limiting post 420 on its side, and the fixing cylinder 110 has a limiting post sliding groove 113 extending along its axial direction, allowing the limiting post 420 to slide into the limiting post sliding groove 113. Thus, during installation, the assembly worker can determine whether the lens assembly 400 is properly installed by checking whether the limiting post 420 has slid into the limiting post sliding groove 113, and then screw the lens assembly latch 500 into the lens assembly 400 to achieve final fixation.

[0044] Furthermore, this highly efficient motorized lens mechanism also includes a limiting mechanism connected to the cam cylinder 300 so that the cam cylinder 300 can only rotate in its circumferential direction. In some embodiments, the limiting mechanism may be a limiting block extending from the cam cylinder 300, and a limiting groove is provided in the fixed cylinder 110 for the limiting block to slide in, the limiting groove being opened in the circumferential direction of the fixed cylinder 110. Alternatively, the limiting mechanism may be a limiting block located on the inner wall of the fixed cylinder 110, and a limiting groove is provided on the outer wall surface of the cam cylinder 300 for the limiting block to slide in, the limiting groove being opened in the circumferential direction of the cam cylinder 300.

[0045] In this embodiment, the limiting mechanism is a cam cylinder slide bolt 700. A cam cylinder limiting groove 114 is provided on the side of the fixed cylinder 110, and the cam cylinder limiting groove 114 is opened along the circumferential direction of the fixed cylinder 110. The cam cylinder slide bolt 700 passes through the cam cylinder limiting groove 114 and is connected to the cam cylinder 300. Thus, the cam cylinder 300 is restricted to rotating only along its circumferential direction by the cam cylinder limiting groove 114 and the cam cylinder slide bolt 700.

[0046] A projection device according to the second aspect of this embodiment includes a projection device body and the aforementioned high-efficiency mounted motorized lens mechanism, wherein the high-efficiency mounted motorized lens mechanism is mounted to the projection device body.

[0047] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A high efficiency installed motorized lens mechanism characterized by, The application relates to a high-efficiency mounted electric lens mechanism. The base comprises a fixing cylinder, the side of the fixing cylinder is provided with a gear avoiding groove and a first limiting groove, and the first limiting groove is arranged along the axial direction of the fixing cylinder; A motor is mounted on the outside of the fixing cylinder, the rotating shaft of the motor is provided with a gear, and the gear can partially pass through the gear avoiding groove; A cam cylinder is rotatably mounted in the fixing cylinder, the side of the cam cylinder is provided with a rack and a second limiting groove, the rack is arranged along the circumferential direction of the cam cylinder and can be engaged with the gear, and the extending direction of the second limiting groove is at an acute angle with the circumferential direction of the cam cylinder; A lens assembly is arranged in the inside of the cam cylinder, the side of the lens assembly is provided with a plurality of bolt locking holes, and the bolt locking holes are arranged in a circumferential array around the central axis of the lens assembly; A lens group sliding bolt passes through the first limiting groove and the second limiting groove and is connected with the bolt locking holes on the lens assembly; Wherein, the cam cylinder rotates, and the lens group sliding bolt can move along the first limiting groove under the driving of the second limiting groove.

2. The high efficiency mounted motorized lens mechanism of claim 1, wherein: The base further comprises a flange seat connected with the fixing cylinder, and the flange seat is used for fixedly connecting with external equipment.

3. The high efficiency mounted motorized lens mechanism of claim 1, wherein: The high-efficiency mounted electric lens mechanism further comprises electronic devices mounted on the outside of the fixing cylinder, and the electronic devices are electrically connected with the motor.

4. The high efficiency mounted motorized lens mechanism of claim 3, wherein: Magnetic stones are mounted on the electronic devices and the fixing cylinder, and the electronic devices can be adsorbed on the fixing cylinder through the magnetic stones so as to fix the electronic devices.

5. The high efficiency mounted motorized lens mechanism of claim 1, wherein: The lens group sliding bolt can be connected with part or all of the bolt locking holes.

6. The high efficiency mounted motorized lens mechanism of claim 5, wherein: The number of the bolt locking holes is four.

7. The high efficiency mounted motorized lens mechanism of claim 1, wherein: The side of the lens assembly is provided with a limiting column, the fixing cylinder is provided with a limiting column sliding groove extending along the axial direction thereof, and the limiting column can slide into the limiting column sliding groove.

8. The high efficiency mounted motorized lens mechanism of claim 1, wherein: The high-efficiency mounted electric lens mechanism further comprises a limiting mechanism connected with the cam cylinder so that the cam cylinder can only rotate along the circumferential direction thereof.

9. The high efficiency mounted motorized lens mechanism of claim 8, wherein: The limiting mechanism is a cam cylinder sliding bolt, the side of the fixing cylinder is provided with a cam cylinder limiting groove, the cam cylinder limiting groove is arranged along the circumferential direction of the fixing cylinder, and the cam cylinder sliding bolt passes through the cam cylinder limiting groove and is connected with the cam cylinder.

10. A projection apparatus, characterized by, The high-efficiency mounted electric lens mechanism is mounted to the projection equipment body.

Images