CN219437092U - Camera module - Google Patents

Abstract

The utility model relates to a camera module, which comprises: the lens assembly comprises a stepping motor, a lens group, a motor rotating rod, an auxiliary rotating rod, an upper shell and a lower shell; the lens group is arranged in the upper shell, the stepping motor is arranged in the lower shell, one end of the motor rotating rod is connected with the lens group, the other end of the motor rotating rod is connected with the stepping motor, the stepping motor drives the rotating rod to do rotary motion, and the lens group moves upwards or downwards along the rotating direction of the motor rotating rod; one end of the auxiliary rotating rod is connected with the lens group, and the other end of the auxiliary rotating rod is arranged in the lower shell. Compared with the traditional VCM (voice coil motor) scheme, the utility model adopts the stepping motor to drive the lens group to move, has strong driving capability, stable output performance and solves the jitter problem, meanwhile, the rotation stroke is not limited, the stepping motor can solve various long-stroke problems by rotating for a plurality of circles, can not be interfered by the outside, can also be suitable for lenses with various sizes, and can be applied to various complex scenes.

Description

Camera module

Technical Field

The utility model relates to the technical field of electronic equipment, in particular to a camera module.

Background

At present, when electronic equipment such as a mobile phone and the like shoots, most of the electronic equipment is handheld shooting, shake is unavoidable when shooting, so that a camera on the mobile phone is slightly inclined, further, the shooting angle of a lens is changed, and the shooting effect of an image is affected. At present, the problem of shake is solved and VCM (voice coil motor) scheme is adopted, but VCM uses the shell fragment to control its up-and-down motion through electromagnetic attraction and repulsive force (and elasticity), because the shell fragment is very thin, and the motion process receives external interference easily, and slight external interference all probably causes the shell fragment shake, makes the motion position change and take a photograph the formation of image unclear. Traditional VCM structure drive capability is limited, can only drive weight very light, and the less camera lens of size leads to application scope and scene limited, if can only be in the scene of standing, the small-size module of making a video recording uses, and can't be applied in equipment and the big camera lens use in the motion, like unmanned aerial vehicle equipment. Moreover, the traditional VCM has short stroke, and because the elastic piece moves up and down elastically, the distance for driving the lens to move up and down is limited, and the switching and focusing between distant view, close view and micro distance cannot be realized.

Disclosure of Invention

The utility model aims to solve the prior art problem, and provides an image pickup module, which drives a lens group to move up and down for focusing through a stepping motor, has strong driving capability, stable output performance and solves the jitter problem by driving a I C controller to control voltage, can solve various long-stroke problems by rotating the stepping motor for a plurality of circles without limit, can not be interfered by the outside, can be adapted to lenses with various sizes, and is applied to various complex scenes.

Specifically, the technical scheme of the utility model is as follows:

the utility model provides a module of making a video recording, include: the device comprises a stepping motor, an upper shell, a lower shell, a lens group and a motor rotating rod; wherein, the lens group is located in the upper casing, and in the step motor was located the inferior valve, the lens group was connected to motor bull stick one end, and step motor was connected to the other end, and step motor drives the bull stick and is rotary motion.

As the preferable technical scheme, the lens assembly comprises an auxiliary rotating rod, wherein one end of the auxiliary rotating rod is connected with the lens assembly, and the other end of the auxiliary rotating rod is arranged in the lower shell.

As the preferable technical scheme, the motor rotating rod and the auxiliary rotating rod are symmetrically arranged on two sides of the lens group.

As a preferable technical scheme, the sensor also comprises a sensor and an integrated circuit unit; the integrated circuit unit comprises an FPC and a PCB board, and is electrically connected with the stepping motor and the sensor.

As the preferable technical scheme, the sensor is arranged on the integrated circuit unit and connected with the lens group, and the sensor receives the optical signal transmitted by the lens group and converts the optical signal into an electric signal.

As a preferred technical solution, the upper housing includes a receiving cavity, which can be used for receiving the lens group.

As the preferable technical scheme, the lens group comprises at least two buckling structures, and the at least two buckling structures can be buckled on the motor rotating rod and the auxiliary rotating rod respectively.

As the preferable technical scheme, a spring structure is embedded in the upper shell, the lens group is provided with a protruding part, one end of the spring structure is fixed on the inner wall of the upper shell, and the other end of the spring structure is connected with the protruding part of the lens group.

As the preferable technical scheme, the contact part of the upper shell and the lower shell is provided with an overlapping groove, the overlapping groove comprises an inner overlapping groove and an outer overlapping groove, the upper shell is provided with the inner overlapping groove, and the lower shell is provided with the outer overlapping groove.

As a preferable technical scheme, the device further comprises a driving I C controller, wherein the stepping motor is connected with the driving IC controller, and the controller is used for controlling the operation of the stepping motor.

Compared with the prior art, the utility model has the following technical effects: (1) Compared with the traditional VCM (voice coil motor) scheme, the stepping motor is strong in driving capability, the voltage is controlled by the I C controller to realize stable output performance, the shake problem is solved, meanwhile, the rotating stroke is not limited, the stepping motor can solve various long-stroke problems by rotating for a plurality of circles, the problem of external interference is avoided, and the stepping motor can also be adapted to lenses with various sizes and is applied to various complex scenes; (2) Simple structure only sets up a step motor, and it is steady that can realize that the lens group does not shake removal, focuses to join in marriage a main bull stick and an auxiliary bull stick.

Description of the drawings:

fig. 1 is a schematic structural diagram of a camera module set according to embodiment 1 of the present utility model;

fig. 2 is a schematic diagram of a split structure of each component of a camera module according to embodiment 1 of the present utility model;

FIG. 3 is a schematic diagram showing the assembly structure of the motor rotating rod, the stepping motor and the upper housing according to embodiment 1 of the present utility model;

fig. 4 is a schematic diagram of an assembly structure of a lens group and a spring structure disposed in an upper housing according to embodiment 1 of the present utility model;

reference numerals illustrate:

an upper case 11; a spring structure 111; a lower housing 12; a stepping motor 2; a motor rotating lever 31; an auxiliary rotating lever 32; a lens group 4; a snap-in structure 41; a protruding portion 42; a sensor 5; an integrated circuit unit 6.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments of the present utility model and corresponding drawings. In the description of the present utility model, it should be noted that the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

As shown in fig. 1 and 2, the present embodiment provides an image capturing module, including: a stepping motor 2, a lens group 4, a motor rotating rod 31, an auxiliary rotating rod 32, an upper housing 11 and a lower housing 12.

Wherein, the lens group 4 is arranged in the upper shell 11, and the stepping motor 2 is arranged in the lower shell 12. The lens group 4 is used for receiving and changing the propagation path of light rays and transmitting optical signals for imaging. The motor rotating rod 31 is a main rotating rod and is used for connecting the stepping motor 2 and the lens group 4, one end of the motor rotating rod is connected with the lens group 4, and the other end of the motor rotating rod is connected with the stepping motor 2. As shown in fig. 3, one end of a motor rotating rod 31 is embedded in the stepping motor 2, and is driven to rotate by a rotating mechanism in the stepping motor 2; the other end is embedded in the upper shell 11, but is not embedded in a tight structure, but is reserved with a gap for providing a space for the motor rotating rod 31 to rotate.

The lens group 4 moves up or down along the rotating direction of the motor rotating rod 31 by the rotation of the motor rotating rod 31 driven by the stepping motor 2, so as to realize focusing. In order to make the lens group 4 more stable and free from shake in the moving process, another auxiliary rotating rod 32, namely the auxiliary rotating rod 32, is symmetrically arranged opposite to the motor rotating rod 31 of the stepping motor 2, so that the weight of the lens is distributed in a balanced manner, and the lens group 4 is assisted to move up and down. As shown in fig. 1, the auxiliary rotating rod 32 has one end connected to the lens group 4 and the other end disposed in the lower housing 12.

As shown in fig. 1 and 2, the camera module further includes a sensor 5 and an integrated circuit unit 6, and the integrated circuit unit 6 includes an FPC and a PCB board and is electrically connected to the stepper motor 2 or the sensor 5. Power is supplied from the outside through the FPC, so that the stepping motor 2 drives the motor rotating rod 31 to provide power for up-and-down movement of the lens. The PCB board, the printed circuit board, the connection sensor 5 and the external communication are the bearing parts of the whole stepping motor 2 module.

With continued reference to fig. 2, the sensor 5 is disposed on the integrated circuit unit 6 and connected to the lens group 4, and the sensor 5 receives the optical signal transmitted by the lens group 4 and converts it into an electrical signal for imaging.

Preferably, the upper housing 11 includes a receiving cavity that can be used to receive the lens group 4.

With continued reference to fig. 1, the lens group 4 itself preferably includes at least two fastening structures 41, and the at least two fastening structures 41 can be fastened on the motor rotating rod 31 and the auxiliary rotating rod 32 respectively, so as to move up and down along with the stepper motor 2 and the rotating rod thereof, and the lens group 4 and the housing are suspended and contactless.

As shown in fig. 4, preferably, the upper housing 11 is embedded with a spring structure 111, the lens group 4 is provided with a protruding portion 42, one end of the spring structure 111 is fixed on the inner wall of the upper housing 11, and the other end is connected with the protruding portion 42 of the lens group 4. The spring structure 111 is designed to enable the lens group 4 to move up and down, and the spring structure 111 gives a reaction force, so that the force of the stepping motor 2 and the reaction force of the spring structure 111 together play a role in fixing and balancing the lens group 4, and the problem of shake of the lens group 4 is further solved.

Preferably, the contact part of the upper shell 11 and the lower shell 12 is provided with an overlapping groove, the overlapping groove comprises an inner overlapping groove and an outer overlapping groove, the upper shell 11 is provided with the inner overlapping groove, and the lower shell 12 is provided with the outer overlapping groove. The arrangement of the overlapping grooves can enable the stepping motor 2 to have a certain buffer space when the upper shell 11 and the lower shell 12 are driven to be separated or combined in the moving process. It will be appreciated by those skilled in the art that the overlapping grooves described herein refer to extensions of the edge portions of either the upper housing 11 or the lower housing 12, the extensions having a thickness less than the thickness of the housing itself, and the inner overlapping groove and the outer overlapping groove, when overlapping, have an overall thickness substantially consistent with the thickness of the housing.

Further, the motor also comprises a driver I C controller, wherein the stepper motor 2 is connected with the driver I C controller, and the controller is used for controlling the operation of the stepper motor 2.

According to this embodiment, the overall operation principle of this camera module is:

1. after the stepping motor 2 is electrified, the controller sends out an instruction to control the stepping motor to rotate upwards or downwards through the control drive I C;

2. the instructions for driving the I C controller are realized through software codes, and the software codes control the rotating speed and direction of the controller;

3. the stepping motor 2 is connected with one end of the motor rotating rod 31, and when the motor rotates, the motor rotating rod 31 rotates in the same direction;

4. the other end of the motor rotating rod 31 is connected with the lens group 4, and the lens group 4 moves upwards or downwards along the rotating direction of the rotating rod;

5. in order to keep the lens group 4 stable and free from shaking when moving up and down along with the motor rotating rod 31, another auxiliary rotating rod 32, namely an auxiliary rotating rod 32, is arranged opposite to the motor rotating rod 31, so that the weight of the lens is distributed in a balanced way, and the lens group 4 is assisted to move up and down;

6. in the process of up-and-down moving focusing of the lens group 4, an external light signal is projected onto the target surface of the sensor 5 through the lens group 4 to output an image, and the equipment main control monitors whether the target image is clear enough or not to output a feedback signal to the driving I C controller of the stepping motor 2 so as to guide the stepping motor to continue rotating or stopping.

Claims (10)

1. A camera module, comprising: the device comprises a stepping motor, an upper shell, a lower shell, a lens group and a motor rotating rod; the lens group is arranged in the upper shell, the stepping motor is arranged in the lower shell, one end of the motor rotating rod is connected with the lens group, the other end of the motor rotating rod is connected with the stepping motor, and the stepping motor drives the rotating rod to rotate.

2. The camera module of claim 1, further comprising an auxiliary rotating rod, wherein one end of the auxiliary rotating rod is connected to the lens group, and the other end of the auxiliary rotating rod is disposed in the lower housing.

3. The camera module of claim 2, wherein the motor rotating rod and the auxiliary rotating rod are symmetrically arranged at two sides of the lens group.

4. The camera module of claim 1, further comprising a sensor and an integrated circuit unit; the integrated circuit unit comprises an FPC and a PCB board, and is electrically connected with the stepping motor and the sensor.

5. The camera module of claim 4, wherein the sensor is disposed on the integrated circuit unit and connected to the lens group, and the sensor receives the optical signal transmitted by the lens group and converts the optical signal into an electrical signal.

6. The camera module of claim 1, wherein the upper housing includes a receiving cavity configured to receive the lens assembly.

7. The camera module of claim 1, wherein the lens group comprises at least two fastening structures, and the at least two fastening structures can be fastened to the motor rotating rod and the auxiliary rotating rod respectively.

8. The camera module of claim 1, wherein a spring structure is embedded in the upper housing, the lens group is provided with a protruding portion, one end of the spring structure is fixed on the inner wall of the upper housing, and the other end of the spring structure is connected with the protruding portion of the lens group.

9. The camera module according to claim 1, wherein an overlapping groove is formed at a contact position of the upper housing and the lower housing, the overlapping groove comprises an inner overlapping groove and an outer overlapping groove, the upper housing is provided with the inner overlapping groove, and the lower housing is provided with the outer overlapping groove.

10. An imaging module according to any one of claims 1 to 9, further comprising a drive IC controller, wherein the stepper motor is connected to the drive IC controller, and wherein the controller is configured to control operation of the stepper motor.