Driving device, periscope driving device and camera module

Abstract

The utility model relates to a driving device, periscopic driving device and camera module, including base and the shell that is buckled on the base and has incident light hole, form the accommodation space between the base and the shell, be equipped with at least two carrier that can move relative to the base in the accommodation space, be equipped with the camera module that is equipped with the incident light hole. The driving device further comprises at least one buffer layer, a hole / groove structure communicated with the incident light hole is arranged on the buffer layer, and a limiting face is arranged on the side, close to the inner top face, provided with the incident light hole, of the shell, of each carrier. And at least one part of the buffer layer is positioned between each limiting surface and the inner top surface. The utility model has the advantages that the buffer layer can play a role in buffering and reducing dust emission caused by impact between the plurality of carriers and the shell, the overall structure is simple, and the process is simplified.

Description

TECHNICAL FIELD

[0001] The utility model belongs to digital photography field, especially relate to a drive device, periscopic drive device and camera module. BACKGROUND

[0002] The camera module is a kind of key hardware component, is widely used in mobile phone, monitoring equipment and other electronic products.Its main composition includes image sensor, lens, optical filter and image processing chip.Image sensor is responsible for converting optical signal into electrical signal, and common sensor has CMOS and CCD, and the former is favored because of its low cost and small power consumption.Lens is used to focus light, and optical filter ensures the color accuracy of image.Image processing chip is then to the image captured noise reduction and correction, to output high-quality image.Modern camera module has high resolution, auto focus, image stabilization and excellent performance in low light environment, can support high-definition video recording.

[0003] In prior art, the movable part in drive device will directly impact with shell, and then generate spalling, damage internal component, reduce the service life of drive device. UTILITY MODEL CONTENT

[0004] The utility model aims at above-mentioned problem, provide a kind of drive device, periscopic drive device and camera module that can solve above-mentioned technical problem.

[0005] Drive device, including base and the shell that is buckled on the base and has incident light hole, the accommodation space is formed between the base and shell, at least two carriers movable relative to the base are provided in the accommodation space, the drive device further includes at least one buffer layer, and the hole / slot structure that is penetrated with the incident light hole is equipped on the buffer layer, each carrier is provided with limit surface on the side close to the inner top surface of the shell with the incident light hole, and at least part of the buffer layer is located between each limit surface and the inner top surface.

[0006] As an application scheme, the application further provides a periscope driving device, which comprises a base and a shell buckled on the base and having an incident light hole, a containing space is formed between the base and the shell, a prism assembly and a lens assembly are arranged in the containing space, the prism assembly comprises a prism carrier for carrying a prism and a prism driving part for driving the prism carrier to move, the lens assembly comprises a lens carrier for carrying a lens and a lens driving part for driving the lens carrier to move, the periscope driving device further comprises at least one buffer layer, a hole / slot structure is arranged on the buffer layer and penetrates the incident light hole, the prism carrier is provided with a first limiting surface on one side close to the inner top surface of the shell provided with the incident light hole, the lens carrier is provided with a second limiting surface on one side close to the inner top surface of the shell provided with the incident light hole, at least part of the buffer layer is located between the first limiting surface and the inner top surface of the shell, and another at least part of the buffer layer is located between the second limiting surface and the inner top surface of the shell.

[0007] Further, the buffer layer is fixed on one side of the inner top surface of the shell provided with the incident light hole, and the buffer layer and the first limiting surface and the second limiting surface are in contact or have a first gap.

[0008] Further, the buffer layer is fixed on one side of the inner top surface of the shell provided with the incident light hole, and the first limiting surface and the second limiting surface are in contact or have a second gap.

[0009] Further, the first limiting surface and / or the second limiting surface is provided with a relief step slot, at least part of the buffer layer extends into the relief step slot, and the buffer layer and the bottom of the relief step slot have the second gap.

[0010] Further, the buffer layer has two layers, one of which is fixed on one side of the inner top surface of the shell provided with the incident light hole, and the other of which is fixed on one side of the inner top surface of the shell provided with the incident light hole, and the two buffer layers are in contact or have a third gap.

[0011] Further, the hole / slot structure comprises any one of a hole and a slot.

[0012] Further, the slot divides the buffer layer into a U shape.

[0013] Further, the first limiting surface and the second limiting surface are both located in the same plane perpendicular to the incident light axis direction of the incident light hole, and the buffer layer is distributed on the plane perpendicular to the incident light axis direction of the incident light hole.

[0014] As an application scheme, the application further provides a camera module, which comprises the periscopic driving device.

[0015] Compared with the prior art, the application has the advantages that the buffer layer can buffer and reduce the impact and dust of the multiple carriers and the shell, and the overall structure is simple and the process is simplified. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an explosion schematic view of the driving device of the embodiment one of the utility model;

[0017] Figure 2 It is an explosion schematic view of the driving device of the embodiment one of the utility model; Figure 1 It is an enlarged view of the main components in area A;

[0018] Figure 3 It is a longitudinal section schematic view of the shell assembly for the driving device in the embodiment one;

[0019] Figure 4 It is an explosion schematic view of the driving device of the embodiment one of the utility model; Figure 3 It is an enlarged view of the main components in area B;

[0020] Figure 5 It is an explosion schematic view of the driving device of the embodiment two of the utility model;

[0021] Figure 6 It is a longitudinal section schematic view of the shell assembly for the driving device in the embodiment two;

[0022] Figure 7 It is an explosion schematic view of the driving device of the embodiment one of the utility model; Figure 6 It is an enlarged view of the main components in area C;

[0023] Figure 8 It is an explosion schematic view of the driving device of the embodiment one of the utility model;

[0024] Figure 9 It is an explosion schematic view of the driving device of the embodiment one of the utility model;

[0025] Figure 10 It is an explosion schematic view of the driving device of the embodiment one of the utility model;

[0026] Figure 11 It is an explosion schematic view of the driving device of the embodiment one of the utility model;

[0027] In the figure, the base 1, the avoiding step groove 10, the contact boss 11, the buffer pad 12, the shell 2, the incident light hole 20, the inner top surface 21, the buffer layer 3, the hole / groove structure 30, the prism carrier 4, the prism driving part 40, the lens carrier 5, the lens driving part 50, the first gap S1, the second gap S2, the first limiting surface P1, and the second limiting surface P2. DETAILED DESCRIPTION

[0028] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely used to explain the utility model and not limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for the convenience of description, not all the structures.

[0029] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0031] In the description of the embodiment, the orientation or position relationship of the terms "upper", "lower", "right", "left" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used to distinguish in description and have no special meaning. Embodiment one

[0032] The application discloses a driving device, which comprises a base 1, a shell 2 buckled on the base 1 and having an incident light hole 20, a containing space formed between the base 1 and the shell 2, at least two carriers movable relative to the base 1 arranged in the containing space, at least one buffer layer 3, a hole / slot structure 30 penetrating the incident light hole 20 arranged on the buffer layer 3, a limiting surface arranged on each carrier close to an inner top surface 21 of the shell 2 on one side of which the incident light hole 20 is arranged, and at least a part of the buffer layer 3 located between each limiting surface and the inner top surface 21.

[0033] In the embodiment, the driving device can be a motor with focusing and anti-shake functions, one carrier is used to realize focusing movement, and the other carrier is used to realize anti-shake movement, the limiting surfaces are formed at the positions closest to the inner top surface 21 of the shell 2, the buffer layer 3 covers at least part of the two limiting surfaces in the direction of the focusing movement, and the buffer layer 3 simultaneously buffers the two carriers and the inner top surface 21 of the shell 2, without the need to separately set a buffer structure on each carrier, thereby simplifying the overall structure.

[0034] Embodiment two

[0035] The application discloses a periscopic driving device, referring to Figures 1-10 , comprising a base 1 and a shell 2 buckled on the base 1 and having an incident light hole 20, a containing space is formed between the base 1 and the shell 2, and a prism assembly and a lens assembly as shown in Figures 8-10 are arranged in the containing space, the prism assembly comprises a prism carrier 4 for carrying a prism and a prism driving part 40 for driving the prism carrier 4 to move, and the lens assembly comprises a lens carrier 5 for carrying a lens and a lens driving part 50 for driving the lens carrier 5 to move.

[0036] The periscopic driving device further comprises at least one buffer layer 3, a hole / slot structure 30 is arranged on the buffer layer 3 and penetrates the incident light hole 20, the prism carrier 4 is provided with a first limiting surface P1 on the side close to the inner top surface 21 of the shell 2 provided with the incident light hole 20, the lens carrier 5 is provided with a second limiting surface P2 on the side close to the inner top surface 21 of the shell 2 provided with the incident light hole 20, at least part of the buffer layer 3 is located between the first limiting surface P1 and the inner top surface 21 of the shell 2, and another at least part of the buffer layer 3 is located between the second limiting surface P2 and the inner top surface 21 of the shell 2.

[0037] In the embodiment, the prism carrier 4 has two inner and outer carriers, the two carriers move relatively and simultaneously make OIS anti-shake movement relative to the base 1, the two prism carriers 4 both have the first limiting surface, the inner prism carrier 4 is used to carry the prism and rotate relative to the outer prism carrier 4 around the direction perpendicular to the exit light axis and the incident light axis of the prism under the action of the prism driving part 40, and the outer prism carrier 4 rotates relative to the base 1 around the exit light axis of the prism. In other embodiments, the axis around which the two prism carriers 4 rotate can be any one of the exit light axis of the prism, the incident light axis of the prism and the direction perpendicular to the exit light axis and the incident light axis of the prism.

[0038] The lens carrier 5 is provided in this embodiment, and in other embodiments, the lens carrier 5 can be provided in two or more along the direction of the exit optical axis of the prism, and each lens carrier 5 has a second limiting surface. The lens carrier 5 is moved along the direction of the exit optical axis of the prism by the lens driving part 50 to perform focusing.

[0039] The first limiting surface and the second limiting surface can be a continuous surface or a plurality of discontinuous surfaces, and can be a flat surface or a non-flat surface.

[0040] The buffer layer 3 covers at least part of the first limiting surface and at least part of the second limiting surface along the direction of the incident optical axis of the prism.

[0041] The base 1 has a structure including a bottom block and a U-shaped retaining wall part connected to at least three sides of the bottom block, and the buffer layer 3 is fixed to the side of the U-shaped retaining wall part away from the bottom block, or can be understood as being fixed to the side of the U-shaped retaining wall part close to the inner top surface 21 of the shell 2.

[0042] Specifically, in this embodiment, as shown in Figure 1 The buffer layer 3 is fixed to the side of the base 1 close to the inner top surface 21 of the shell 2 provided with the incident light hole 20, and the buffer layer 3, the first limiting surface, and the second limiting surface are in contact or have a first gap S1 reserved, and the presence of the buffer layer 3 can effectively absorb the vibration generated during the operation of the moving part, reduce the direct impact on the shell 2, and thus reduce the wear of the parts.

[0043] To ensure that the incident light can directly enter the driving device, a hole / slot structure 30 is provided on the buffer layer 3, which is in communication with the incident light hole 20, and the hole / slot structure 30 includes any one of a hole and a slot, and in this embodiment, the structure is a hole structure, and in specific working conditions, the diameter and arrangement of the hole will be optimized according to the characteristics of the driving device and the parameters of the light source to ensure that the light can uniformly and efficiently irradiate the required area.

[0044] Because of the hole / slot structure 30, the buffer layer 3 can be a closed shape or an open shape, and of course in some embodiments, the buffer layer 3 can be divided into two parts, but each part of the two parts simultaneously buffers two different carriers, i.e., each part has at least part between the first limiting surface and the inner top surface 21, and at least part between the second limiting surface and the inner top surface 21.

[0045] Embodiment Three

[0046] The structure and principle of this embodiment are basically the same as those of embodiment one, and the difference is that for the buffer layer of the above-mentioned embodiment one, this embodiment describes another design idea about the buffer layer.

[0047] AsFigure 5 As shown, in this embodiment, the buffer layer 3 is fixed to the inner top surface 21 of the housing 2 on the side where the light entrance hole 20 is provided, and the buffer layer 3 and the first and second limiting surfaces are in contact or a second gap S2 is reserved therebetween.

[0048] The second gap S2 has the same effect as the first gap S1 in Embodiment One, and can provide better tolerance compensation during installation and debugging, and provide a space for the movable parts in the driving device.

[0049] In particular, as shown in the drawings, Figure 2 As shown, the first and / or second limiting surfaces are provided with an avoidance step groove 10 on the side of the housing 2 where the light entrance hole 20 is provided, the buffer layer 3 is at least partially inserted into the avoidance step groove 10, and a second gap S2 is reserved between the buffer layer 3 and the bottom of the avoidance step groove 10. The avoidance step groove 10 can ensure that the buffer layer 3 can effectively absorb the vibration or impact that may come from the base 1 without affecting the transmission of light, and to some extent, the provision of the avoidance step groove 10 can improve the structural strength of the entire base 1, thereby improving the service life of the driving device.

[0050] In this embodiment, the hole / groove structure 30 is designed as a groove structure, and the groove structure is designed to cut the above-mentioned buffer layer 3 into a U shape. This design has the same structural effect as the buffer layer 3 and the hole / groove structure 30 in Embodiment One, and the U-shaped design greatly simplifies the structure of the buffer layer 3, reducing production costs.

[0051] Embodiment Four

[0052] The structure and principle of this embodiment are basically the same as those of Embodiments One and Two, and the difference lies in that, for the buffer layer described in Embodiments One and Two, this embodiment describes another design idea for the buffer layer.

[0053] In this embodiment, the buffer layer 3 has two layers, one of which is fixed to the side of the base 1 near the housing 2 where the light entrance hole 20 is provided, and the other is fixed to the inner wall of the housing 2 on the side where the light entrance hole 20 is provided. The two layers of buffer layer 3 are in contact or a third gap is reserved therebetween. The design of the double-layer buffer structure effectively enhances the shock resistance and impact resistance of the driving device.

[0054] The design of the double-layer buffer structure is theoretically better in terms of shock resistance and impact resistance than the buffer structure in Embodiments One and Two, but its production cost is better, and the structure is more complex. It can be optimized according to the actual working conditions.

[0055] Embodiment Five

[0056] The structure and principle of the embodiment are basically the same as those of embodiment one, and the difference lies in that, for the driving device in the above embodiment one, the camera module of the embodiment comprises the periscopic driving device of embodiment four.

[0057] As shown in Figure 11 The camera module is an integrated hardware component, which is usually used to capture images and videos, and is widely used in various electronic devices such as mobile phones, tablet computers, monitoring devices, unmanned aerial vehicles, smart homes and the like.

[0058] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A drive device comprising a base (1) and a housing (2) fastened to the base (1) and having an incident light hole (20), a receiving space being formed between the base (1) and the housing (2), at least two carriers being arranged in the receiving space and movable relative to the base (1), characterized in that The driving device further comprises at least one buffer layer (3) provided with a hole / slot structure (30) penetrating the incident light hole (20), and each carrier is provided with a limiting surface on the side close to the inner top surface (21) of the shell (2) provided with the incident light hole (20).

2. The drive apparatus according to claim 1, characterized by The hole / slot structure (30) comprises any one of a hole and a slot.

3. The drive apparatus according to claim 2, characterized by The slot divides the buffer layer (3) into a U shape.

4. A periscopic drive device comprising a base (1) and a housing (2) fastened to the base (1) and having an entrance aperture (20), a receiving space being formed between the base (1) and the housing (2), a prism assembly and a lens assembly being arranged in the receiving space, the prism assembly comprising a prism carrier (4) for carrying a prism and a prism drive portion (40) for driving the prism carrier (4) to move, the lens assembly comprising a lens carrier (5) for carrying a lens and a lens drive portion (50) for driving the lens carrier (5) to move, characterized in that, The periscope driving device further comprises at least one buffer layer (3) provided with a hole / slot structure (30) penetrating the incident light hole (20), the prism carrier (4) is provided with a first limiting surface (P1) on the side close to the inner top surface (21) of the shell (2) provided with the incident light hole (20), the lens carrier (5) is provided with a second limiting surface (P2) on the side close to the inner top surface (21) of the shell (2) provided with the incident light hole (20), and at least part of the buffer layer (3) is located between the first limiting surface (P1) and the inner top surface (21) of the shell (2), and another at least part of the buffer layer (3) is located between the second limiting surface (P2) and the inner top surface (21) of the shell (2).

5. The periscope drive apparatus according to claim 4, characterized by The buffer layer (3) is fixed to the side of the inner top surface (21) of the shell (2) provided with the incident light hole (20), and the buffer layer (3) and the first limiting surface (P1) and the second limiting surface (P2) are in contact or reserved with a first gap (S1).

6. The periscopic drive device according to claim 4, characterized by The buffer layer (3) is fixed to the inner top surface (21) of the side of the shell (2) provided with the incident light hole (20), and the first limiting surface (P1) and the second limiting surface (P2) are in contact with the buffer layer (3) or reserved with a second gap (S2).

7. The periscope drive apparatus according to claim 6, characterized by The first limiting surface (P1) and / or the second limiting surface (P2) are provided with a avoiding step groove (10), at least part of the buffer layer (3) extends into the avoiding step groove (10), and the buffer layer (3) and the bottom of the avoiding step groove (10) are reserved with the second gap (S2).

8. The periscopic drive device according to claim 5, characterized by The buffer layer (3) has two layers, one of which is fixed to the side of the inner top surface (21) of the shell (2) provided with the incident light hole (20), and the other is fixed to the inner top surface (21) of the side of the shell (2) provided with the incident light hole (20), and the two buffer layers (3) are in contact or reserved with a third gap.

9. The periscopic drive device according to claim 4, characterized by The first limiting surface (P1) and the second limiting surface (P2) are located in the same plane perpendicular to the incident light axis direction of the incident light hole (20), and the buffer layer (3) is distributed on the plane perpendicular to the incident light axis direction of the incident light hole (20).

10. An image capture module, characterized by, The camera module comprises the periscope driving device of claim 9.

Images