CN2677958Y - Built-in drive source structure for camera lens group - Google Patents

Abstract

A built-in drive source structure of camera lens group is characterized by that it utilizes the ring coil stator to directly arrange it in the interior of lens seat, the shaft cylinder of magnet ring rotor is screwed with telescopic lens for limiting rotation, and the shaft cylinder of the rotating magnet ring rotor can be used for directly driving telescopic lens with male screw thread to make telescopic displacement so as to form a camera lens group with built-in drive source.

Description

Built-in drive source structure for camera lens group

technical field

The utility model relates to a driving source structure of a camera lens group, in particular to a built-in driving source structure of a camera lens group, which mainly utilizes an annular coil stator to be directly arranged inside the lens seat, and the shaft of the magnet ring rotor The barrel is screwed with the telescopic lens that restricts the rotation, and the shaft barrel of the rotating magnet ring rotor directly drives the telescopic lens with male thread for telescopic displacement, forming a camera lens group with a built-in drive source, and then drives the camera The lens group achieves a built-in configuration drive source, which eliminates the deflection when the telescopic lens is driven, simplifies parts and facilitates assembly and production.

Background technique

The structure of the traditional camera lens group is to directly position the driving motor outside the lens holder, and indirectly drive the telescopic lens for telescopic displacement through the connection of the transmission component. Since the driving position is unilateral, the telescopic lens needs to cooperate with an additional connection. The moving components are assembled inside the lens holder, however, it has the following disadvantages during actual assembly and operation:

1. Since the drive motor is positioned outside the lens mount, the structural configuration of the camera lens group is asymmetrical, which affects the spatial configuration of the lens group on the camera.

2. Since the driving position of the driving motor is unilateral relative to the lens group, the deflection of the telescopic lens is very serious when it is driven to expand and contract.

3. In addition, the drive motor outside the lens mount needs to cooperate with an additional linkage component to drive the telescopic lens inside the lens mount, resulting in a burden of parts and assembly costs.

Contents of the invention

The main purpose of this utility model is to provide a built-in driving source structure of the camera lens group, which mainly uses the annular coil stator to be directly arranged inside the lens holder, and the shaft cylinder of the magnet ring rotor is connected with the telescopic lens that restricts rotation. Screwing, through the shaft cylinder of the rotating magnet ring rotor, directly drives the telescopic lens with male thread for telescopic displacement, forming a camera lens group with a built-in drive source, and then promotes the camera lens group to achieve a built-in configuration. The deflection when the telescopic lens is driven, the purpose of simplifying parts and facilitating assembly and production.

The purpose of this utility model is achieved as follows: a built-in driving source structure of a camera lens group, the camera lens group is composed of a lens seat and a telescopic lens capable of relative displacement, and the driving source is composed of a plurality of poles on the inner ring surface. A stepping motor composed of a toothed ring coil stator and a magnet ring rotor is characterized in that: the inside of the lens holder is directly provided with a ring coil stator, and then the magnet ring rotor is placed into the space for the ring coil stator, and the outer peripheral surface of the telescopic lens is provided with a sun Thread, and the female thread on the inner surface of the shaft cylinder of the magnet ring rotor is movable and screwed, and the outer peripheral surface of the telescopic lens is provided with a limit chute, which is set to limit the rotation of the guide block of the lens holder. The magnet ring rotor is controlled by the The ring coil stator is induced to rotate, and the female thread on the inner surface of the shaft cylinder drives the telescopic lens with the male thread to telescopically move.

Thrust rings are respectively arranged above and below the magnet ring rotor in the lens seat to limit the axial displacement of the magnet ring rotor and provide thrust reaction force for telescopic displacement of the telescopic lens. The guide block of the lens mount is arranged on a kit, and the kit is combined and fixed on the lens mount to stably fix the annular coil stator inside the lens mount.

The male thread and the limiting chute of the telescopic lens are arranged on the outer peripheral surface of a liner, and the telescopic lens is combined and fixed at the end of the liner, which further provides the effect of convenient assembly of the telescopic lens.

Further description will be given below in conjunction with preferred embodiments and accompanying drawings.

Description of drawings

FIG. 1 is a three-dimensional exploded schematic view of the camera lens group of the present invention.

Fig. 2 is a schematic perspective view of the combination of the camera lens group of the present invention.

Fig. 3 is a schematic cross-sectional view of the combination of the camera lens group of the present invention.

Fig. 4 is a schematic cross-sectional view of the telescopic state combination of the camera lens group of the present invention.

Detailed ways

Referring to Fig. 1-shown in Fig. 4, the utility model is to provide a kind of built-in drive source structure of camera lens group, and its camera lens group is made up of lens holder 11 and telescopic lens 12 that can be relatively displaced, and drive source is made up of A stepping motor composed of a ring coil stator 21 with a plurality of pole teeth 22 on the inner ring surface and a magnet ring rotor 25, wherein the inside of the lens holder 11 is directly provided with a ring coil stator 21, and then the magnet ring rotor 25 is inserted into the ring coil stator 21 A space 23 is provided, and the outer peripheral surface of the telescopic lens 12 is provided with a male thread 13, which is movable and screwed with the female thread 27 on the inner surface of the shaft cylinder 26 of the magnet ring rotor 25, and a limit chute 14 is provided on the outer peripheral surface of the telescopic lens 12. The guide block 15 fitted to the lens holder 11 is set to limit and stop rotation, so that the magnet ring rotor 25 is induced by the ring coil stator 21 to rotate, and the female thread 27 on the inner surface of the shaft tube 26 drives the telescopic lens 12 with the male thread 13 For telescopic displacement, as shown in Figures 3-4, it is characterized by forming a camera lens group with a built-in driving source.

Wherein the lens seat 11 is respectively provided with thrust rings 24 up and down relative to the magnet ring rotor 25, to limit the axial displacement of the magnet ring rotor 25, and provide the thrust reaction force when the telescopic lens 12 is used for telescopic displacement; and the lens seat 11 The guide block 15 can also be arranged on a kit 16, and then the kit 16 is combined and fixed on the lens holder 11, and the annular coil stator 21 inside the lens holder 11 is stably fixed.

In addition, the male thread 13 and the limit chute 14 provided by the telescopic lens 12 can be arranged on the outer peripheral surface of a liner 17, and then the telescopic lens 12 is combined and fixed on the end of the liner 17 to further provide the convenience of assembling the telescopic lens 12. effect.

The utility model is a stepping motor composed of an annular coil stator 21 and a magnet ring rotor 25, which is directly arranged in the camera lens group composed of the lens holder 11 and the telescopic lens 12, and uses the magnet ring rotor 25 to receive the induction of the annular coil stator 21 And the action rotates to replace and simplify the additional linkage components, and then the guide block 15 of the lens holder 11 is aligned with the axial limit chute 14 of the telescopic lens 12, and at the same time, the female thread on the inner surface of the rotating shaft cylinder 26 is rotated by induction 27, and the telescopic lens 12 with male thread 13 is omnidirectionally driven for stable telescopic displacement, wherein the annular shaft tube 26 of the magnet ring rotor 25 is used to drive the telescopic lens 12 omnidirectionally, which can completely eliminate the impact of the telescopic lens 12 Drive the lateral deflection when stretching, and the stepping motor driven is located inside the lens holder 11, so that the structure of the camera lens group is symmetrically configured, and the flexibility of the spatial configuration of the lens group on the camera is improved, thereby promoting the camera The lens group achieves a built-in configuration drive source, which eliminates the deflection when the telescopic lens is driven, simplifies parts and facilitates assembly and production.

The above-mentioned structural features of the present utility model, the relevant position of the combination and the use thereof have been described in detail, and the effect and advantages that are expected to be achieved are described as follows:

a, the fact that the effect of the present utility model improves is as follows:

1. The driving motor is directly arranged inside the lens holder 11, so that the structural configuration of the camera lens group is circularly symmetrical, and the flexibility of the spatial configuration of the lens group on the camera is improved.

2. The driving motor is an omnidirectional driving position relative to the lens group, so the deflection situation when the telescopic lens 12 is driven to expand and contract can be eliminated.

3. In addition, the drive motor inside the lens mount 11 does not need to cooperate with additional linkage components, but directly drives the telescopic lens 12 inside the lens mount 11 with the shaft tube 26 of the magnet ring rotor 25, thereby simplifying the burden of parts and assembly costs.

b. The new functional facts produced by the utility model are as follows: the stepping motor formed by the annular coil stator 21 and the magnet ring rotor 25 is directly arranged in the camera lens group composed of the lens holder 11 and the telescopic lens 12, so that the camera lens group reaches the built-in The power of the driving source is configured in the same way.

Claims (4)

1. A built-in driving source structure of a camera lens group, the camera lens group is composed of a lens holder and a telescopic lens capable of relative displacement, and the driving source is an annular coil stator with a plurality of pole teeth on the inner ring surface and a magnet ring The stepping motor composed of the rotor is characterized in that the ring coil stator is directly arranged inside the lens holder, and then the magnet ring rotor is placed into the space for the ring coil stator, and the outer peripheral surface of the telescopic lens is provided with male threads, and is connected with the magnet ring rotor. The female thread on the inner surface of the shaft cylinder is relatively movable, and the outer peripheral surface of the telescopic lens is equipped with a limit chute, which is set to limit the rotation of the guide block of the lens holder. The magnet ring rotor is induced by the ring coil stator and rotates. , the female thread on the inner surface of the shaft cylinder drives the telescopic displacement of the telescopic lens with the male thread. 2. The built-in drive source structure of the camera lens group according to claim 1, characterized in that: thrust rings are respectively arranged above and below the magnet ring rotor in the lens seat to limit the axial displacement of the magnet ring rotor , and provide thrust reaction force for telescopic displacement of the telescopic lens. 3. The built-in driving source structure of the camera lens group according to claim 1, characterized in that: the guide block of the lens mount is set on a kit, and the kit is combined and fixed on the lens mount to stably fix the lens Toroidal coil stator inside the seat. 4. The built-in driving source structure of the camera lens group according to claim 1, characterized in that: the male thread and the limiting chute of the telescopic lens are arranged on the outer peripheral surface of a bushing, and the telescopic lens is combined and fixed on end of the liner.