CN215581426U

CN215581426U - Camera module and electronic equipment

Info

Publication number: CN215581426U
Application number: CN202122324144.0U
Authority: CN
Inventors: 周华昭; 何宗文; 张溢文; 温彭真
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-01-18
Anticipated expiration: 2031-09-24

Abstract

The application discloses camera module and electronic equipment, camera module include base, sensitization chip, first lens, first support and actuating mechanism, wherein: the drive mechanism comprises a drive coil and a drive magnet, one of the base and the first support is provided with the drive coil, the other one of the base and the first support is provided with the drive magnet, the first support moves along a first direction under the condition that the drive coil and the drive magnet interact, the first direction is a direction close to or far away from the photosensitive chip, and under the condition that the first support is subjected to external force, a damping effect is generated between the drive coil and the drive magnet.

Description

Camera module and electronic equipment

Technical Field

The application belongs to the technical field of make a video recording, concretely relates to camera module and electronic equipment.

Background

Nowadays, as the image capturing technology of electronic devices is improved, people hope to capture images with higher quality by using the electronic devices.

In the actual shooting process, the shot object can be enlarged by optical zooming. The optical zoom can enlarge a subject by changing the distance between the lens and the subject, and therefore, the lens needs to be moved during zooming. In order to realize the movement of the lens, the driving force can be output by the motor and transmitted to the lens barrel for mounting the lens through the transmission mechanism so as to move the lens.

However, when a user uses the electronic device, the camera module in the extended state is easily subjected to a pressing force due to falling, collision and manual pressing, and under the action of the pressing force, the lens barrel of the camera module tends to retract.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application aims to provide a camera module and electronic equipment, and the problem that the service life of the camera module is short can be solved.

In order to solve the technical problem, the present application is implemented as follows:

first aspect, the embodiment of the present application provides a camera module, and it includes base, sensitization chip, first lens, first support and actuating mechanism, wherein:

the photosensitive chip is arranged on the base, the first bracket is movably arranged on the base and is provided with the first lens,

the drive mechanism includes a drive coil and a drive magnet, one of the base and the first holder is provided with the drive coil, the other is provided with the drive magnet, the first holder moves in a first direction under the condition that the drive coil and the drive magnet interact, the first direction is a direction close to or far away from the photosensitive chip,

when the first bracket is subjected to an external force, a damping effect is generated between the driving coil and the driving magnet.

In a second aspect, an embodiment of the present application provides an electronic device, which includes the above camera module.

In the embodiment of the application, the driving mechanism comprises a driving coil and a driving magnet, and under the condition that the driving coil and the driving magnet act, the first bracket moves along the first direction, so that the zooming of the camera module is realized. Under the condition that the first support is under the action of external force, relative displacement is generated between the driving coil and the driving magnet, so that electromagnetic resistance is generated between the driving coil and the driving magnet, the electromagnetic resistance can block the driving coil and the driving magnet from moving relatively, namely, a damping effect is generated between the driving coil and the driving magnet, and then buffering is realized. Because drive coil and driving magnet adopt non-contact's mode transmission power, consequently both can relative movement under the exogenic action to this absorbs external force, and, the damping action that drive coil and driving magnet produced has the cushioning effect, so spare part that the camera module contains is difficult to damage because of exogenic action, and consequently the life-span of this kind of camera module is longer.

Drawings

Fig. 1 is an exploded view of a part of the structure of a camera module disclosed in a first embodiment of the present application;

fig. 2 is a sectional view of a part of the structure of a camera module disclosed in the first embodiment of the present application;

fig. 3 is an exploded view of a part of the structure of a camera module disclosed in a second embodiment of the present application;

fig. 4 is a sectional view of a part of the structure of a camera module disclosed in the second embodiment of the present application.

Description of reference numerals:

110-base, 120-first lens, 130-first bracket, 131-first guide part, 140-driving mechanism, 141-driving coil, 142-driving magnet, 143-reinforcing plate, 150-second bracket, 151-second guide part, 152-extension part, 160-second lens, 170-first elastic part, 180-electric connection part, 190-first guide post and 210-second guide post.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The electronic device provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Referring to fig. 1 to 2, an embodiment of the present application discloses a camera module, which includes a base 110, a photosensitive chip, a first lens 120, a first bracket 130, and a driving mechanism 140.

The photosensitive chip is disposed on the base 110, and the base 110 can be disposed with other devices of the camera module besides the photosensitive chip. The first bracket 130 is movably disposed on the base 110, the first bracket 130 is provided with a first lens 120, and the light sensing chip can be used for receiving light passing through the first lens 120 and finally converting the light signal into a digital image signal, thereby obtaining an image.

The driving mechanism 140 includes a driving coil 141 and a driving magnet 142, one of the base 110 and the first support 130 is provided with the driving coil 141, and the other is provided with the driving magnet 142, and the first support 130 moves in a first direction, where the first direction is a direction approaching or separating from the photosensitive chip, in a state where the driving coil 141 and the driving magnet 142 interact with each other. In other words, the driving mechanism 140 can drive the first lens 120 to be close to the photosensitive chip and to be far from the photosensitive chip, thereby changing the distance between the first lens 120 and the photosensitive chip. When the first bracket 130 receives an external force, a damping action is generated between the driving coil 141 and the driving magnet 142. Alternatively, the base 110 may include a bottom plate, which may be provided with one of the driving coil 141 and the driving magnet 142. In addition, the driving mechanism 140 may further include a reinforcing plate 143, one of the base 110 and the first bracket 130 is provided with the reinforcing plate 143, and the driving coil 141 is provided to the reinforcing plate 143, thereby improving structural stability of the driving coil 141. When the driving coil 141 is energized, the driving coil 141 generates a magnetic field that interacts with the magnetic field of the driving magnet 142, thereby generating an ampere force to move the driving coil 141 and the driving magnet 142 relative to each other. By precisely controlling the current applied to the driving coil 141, the amount of movement of the first bracket 130 can be precisely controlled, thereby precisely controlling the zoom ratio of the camera module. Because the driving coil 141 and the driving magnet 142 can drive the first lens 120 without contact, the driving mechanism 140 has a small abrasion loss and a long service life, and the arrangement positions of the driving coil 141 and the driving magnet 142 can be flexibly selected, thereby facilitating the structural design of the camera module. In addition, the driving coil 141 and the driving magnet 142 occupy a smaller space, and the structure is simpler, thereby being more beneficial to the miniaturization design of the camera module.

As shown in fig. 3 and 4, in one embodiment, the base 110 is provided with a driving coil 141, and the first bracket 130 is provided with a driving magnet 142. When the magnetic field generated by the driving coil 141 is the same as the magnetic field of the driving magnet 142, the driving magnet 142 is far away from the driving coil 141, so that the first lens 120 is driven by the first bracket 130 to be far away from the photosensitive chip; when the magnetic field generated by the driving coil 141 is opposite to the magnetic field of the driving magnet 142, the driving magnet 142 approaches the driving coil 141, so that the first lens 120 is driven by the first bracket 130 to approach the photo sensor chip. In this embodiment, the driving coil 141 may be fixed, thereby facilitating the design of the electrical connection of the driving coil 141.

As shown in fig. 1 and 2, in another embodiment, the base 110 is provided with a driving magnet 142, and the first bracket 130 is provided with a driving coil 141. When the direction of the magnetic field generated by the driving coil 141 is the same as that of the driving magnet 142, the driving coil 141 is far away from the driving magnet 142, so that the first lens 120 is driven by the first bracket 130 to be far away from the photosensitive chip; when the magnetic field generated by the driving coil 141 is opposite to the magnetic field of the driving magnet 142, the driving coil 141 is close to the driving magnet 142, so that the first lens 120 is driven to be close to the photosensitive chip by the first bracket 130. In this embodiment, the driving magnet 142 is fixed, and since the driving coil 141 is generally lighter than the driving magnet 142, the driving force required for the driving coil 141 is smaller, and the power consumption of the camera module is reduced accordingly.

In the embodiment of the present application, the driving mechanism 140 includes a driving coil 141 and a driving magnet 142, and when the driving coil 141 and the driving magnet 142 interact with each other, the first bracket 130 moves in the first direction, so as to zoom the camera module. When the first bracket 130 is subjected to an external force, the driving coil 141 and the driving magnet 142 generate relative displacement therebetween, so that an electromagnetic resistance is generated therebetween, and the electromagnetic resistance can hinder the driving coil 141 and the driving magnet 142 from moving relative to each other, that is, a damping effect is generated between the driving coil 141 and the driving magnet 142, thereby achieving buffering. Further, the faster the external force is applied, the better the cushioning effect of the driving coil 141 and the driving magnet 142 is. Because the driving coil 141 and the driving magnet 142 transmit power in a non-contact manner, the driving coil 141 and the driving magnet 142 can move relatively under the action of external force to absorb the external force, and the damping action generated by the driving coil 141 and the driving magnet 142 has a buffering effect, so that parts contained in the camera module are not easily damaged due to the action of the external force, and the service life of the camera module is longer.

In order to provide a larger driving force, the number of the driving coils 141 may be set to be at least two, the driving magnets 142 may be correspondingly set to be at least two, each driving coil 141 and each driving magnet 142 are disposed around the optical axis, and each driving coil 141 may act in one-to-one correspondence with each driving magnet 142, thereby providing a larger and more widely distributed acting force, so that the first support 130 may move more smoothly. Further, in the case that at least one driving coil 141 is connected to the electrical connector 180, the other at least one driving coil 141 is always in the power-off state, and when the first bracket 130 is subjected to an external force, a damping effect generated between the driving coil 141 and the driving magnet 142, which are always in the power-off state, is not easily cancelled by the magnetic force, so that the damping effect is stronger, thereby achieving a better buffering effect. Alternatively, it is possible to connect all the drive coils 141 to the electrical connector 180 and to put a part of the drive coils 141 in the power-off state by cutting off the electrical circuit between the part of the drive coils 141 and the electrical connector 180; alternatively, the electrical connection member 180 is not provided for a portion of the driving coil 141, so that the portion of the driving coil 141 is always in the power-off state. Alternatively, the electrical connector 180 may be a flexible circuit board.

In order to expand the zoom range of the camera module, the camera module may further include a second bracket 150 and a second lens 160, the second bracket 150 is movably disposed on the first bracket 130, the second bracket 150 is disposed with the second lens 160, and the first lens 120 is disposed between the second lens 160 and the photo sensor chip. Alternatively, a driving member may be disposed on the first support 130, and the driving member includes a telescopic cylinder or a coil magnet assembly, and other driving schemes may be adopted as long as the second support 150 can be driven to move relative to the first support 130. Since the distance between the second lens 160 and the first lens 120 can be varied, more zoom factors can be obtained by the movement of the second lens 160.

It should be noted that, the number of the first lens 120 and the second lens 160 may be one, or at least two, and the specific number of the first lens 120 and the second lens 160 may be determined according to the imaging requirement of the camera module, which is not limited in the embodiment of the present application.

In another optional embodiment, the camera module further includes a first elastic member 170, the first elastic member 170 is disposed between the first bracket 130 and the second bracket 150, the driving mechanism 140 drives the second bracket 150 to move along the first direction through the first bracket 130 and the first elastic member 170, and under the condition that the second bracket 150 is subjected to an external force, the first elastic member 170 can enable the second bracket 150 to move along the direction close to the photo sensor chip. When the driving mechanism 140 applies an acting force to the first support 130, the first support 130 can drive the second support 150 to move through the first elastic member 170 while moving, so that the first lens 120 and the second lens 160 can move synchronously, and when the second support 150 is acted by an external force, the first elastic member 170 can deform, so that the external force action is buffered, and the first support 130, the second support 150 and other components are prevented from being damaged due to the external force action. Meanwhile, the first elastic member 170 may allow the second frame 150 to move relative to the first frame 130, so that the distance between the second lens 160 and the first lens 120 may be changed, thereby achieving zooming.

In order to improve the stability of the first support 130 during movement, the camera module further includes a first guide post 190, one of the base 110 and the first support 130 is provided with a first guide portion 131, the other is fixedly connected with the first guide post 190, and the first guide portion 131 is in sliding fit with the first guide post 190. In this embodiment, the first guide post 190 can limit the lateral movement of the first bracket 130, thereby providing a guide for the movement of the first bracket 130 to move more smoothly. Further, a plurality of first guide pillars 190 may be provided, and the plurality of first guide pillars 190 are matched with the plurality of first guide parts 131 in a one-to-one correspondence, so as to optimize a guiding effect.

In order to improve the stability of the second bracket 150 during movement, the camera module further includes a second guide post 210, one of the first bracket 130 and the second bracket 150 is provided with a second guide portion 151, the other is fixedly connected with the second guide post 210, and the second guide portion 151 is in sliding fit with the second guide post 210. In this embodiment, the second guide post 210 can limit the lateral movement of the second bracket 150, thereby providing a guide for the movement of the second bracket 150 to move more smoothly. Further, a plurality of second guide pillars 210 may be provided, and the plurality of second guide pillars 210 are in one-to-one correspondence with the plurality of second guide portions 151, thereby optimizing a guide effect.

The first guide portion 131 and the second guide portion 151 may be provided as guide holes, in other embodiments, the first guide portion 131 is provided at an edge of the first bracket 130, the first guide portion 131 is a guide notch, the second guide portion 151 is provided at an edge of the second bracket 150, and the second guide portion 151 is a guide hole. Because first support 130 will be connected with base 110, will be connected with second support 150 again, therefore the structural strength of first support 130 is great to the life-span influence of camera module, and the direction breach can satisfy the direction demand, can reduce the material removal volume of first support 130 simultaneously to promote the structural strength of first support 130. The second bracket 150 is mainly connected to the first bracket 130, so that the structural strength of the second bracket has a small influence on the service life of the camera module, and the second guide part 151 is provided as a guide hole, which does not cause the structural strength of the second guide part 151 to be too small, and can increase the contact area between the second guide part 151 and the second guide post 210, thereby improving the guiding effect.

The connection position of the first elastic member 170 and the second bracket 150 may be offset from the position of the second guide portion 151, but such an arrangement may result in a less compact structure of the second bracket 150 and may increase the difficulty of the structural design of the second bracket 150. For this purpose, an extension portion 152 is disposed on a surface of the second bracket 150 facing the first bracket 130, the extension portion 152 has a second guiding portion 151, and the extension portion 152 can at least partially extend into the first elastic member 170. In this embodiment, the extension portion 152 may serve as a connecting portion between the second bracket 150 and the first elastic member 170, and after at least partially extending into the first elastic member 170, the extension portion may assist in limiting the lateral deformation of the first elastic member 170, thereby further facilitating to extend the life of the first elastic member 170. Because the extension portion 152 and the second guide portion 151 are integrally disposed together, the structure of the second bracket 150 is more compact, the difficulty of the structural design is lower, and the second bracket 150 is not easy to occupy the space of other components, which is more beneficial to the overall layout of the camera module.

Further alternatively, the extension portion 152 may be provided with a counter bore, and the second guide portion 151 may be provided at a bottom surface of the counter bore. Compared with the solution that the second guiding part 151 penetrates through the entire extension part 152, the embodiment makes the second guiding part 151 penetrate through only a part of the extension part 152, and the end of the second guide post 210 far away from the first bracket 130 can be closer to the first bracket 130, so that the first bracket 130 and the second bracket 150 are more compactly distributed, thereby facilitating the miniaturization design of the camera module.

The embodiment of the application also discloses electronic equipment which comprises the camera module in any embodiment.

The electronic device disclosed in the embodiment of the present application may be an electronic device such as a smart phone, a tablet computer, an electronic book reader, a wearable device (e.g., a smart watch), and an electronic game machine, and the kind of the electronic device is not particularly limited in the embodiment of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a camera module which characterized in that, includes base, sensitization chip, first lens, first support and actuating mechanism, wherein:

2. The camera module of claim 1, wherein the number of the drive coils is at least two, and at least one other of the drive coils is always in a power-off state with at least one of the drive coils connected to an electrical connector.

3. The camera module according to claim 1, further comprising a second bracket movably disposed on the first bracket and a second lens disposed on the second bracket, wherein the first lens is disposed between the second lens and the photo sensor chip.

4. The camera module of claim 3, further comprising a first resilient member disposed between the first bracket and the second bracket,

the driving mechanism drives the second bracket to move along the first direction through the first bracket and the first elastic piece,

under the condition that the second support is under the action of external force, the first elastic piece can enable the second support to move along the direction close to the photosensitive chip.

5. The camera module of claim 4, further comprising a first guide post, one of the base and the first bracket is provided with a first guide portion, the other is fixedly connected with the first guide post, the first guide portion is slidably engaged with the first guide post,

the camera module further comprises a second guide post, one of the first support and the second support is provided with a second guide part, the other of the first support and the second support is fixedly connected with the second guide post, and the second guide part is in sliding fit with the second guide post.

6. The camera module according to claim 5, wherein the first guide portion is provided at an edge of the first bracket, the first guide portion is a guide notch, the second guide portion is provided at an edge of the second bracket, and the second guide portion is a guide hole.

7. The camera module according to claim 6, wherein the second bracket has an extension portion on a surface thereof facing the first bracket, the extension portion having the second guiding portion, and the extension portion can at least partially extend into the first elastic member.

8. The camera module according to claim 7, wherein the extension portion is provided with a counter bore, and the second guide portion is provided on a bottom surface of the counter bore.

9. The camera module according to claim 1, wherein the driving mechanism further includes a reinforcing plate, one of the base and the first bracket is provided with the reinforcing plate, and the driving coil is provided with the reinforcing plate.

10. An electronic device, comprising the camera module according to any one of claims 1 to 9.