Driving device, camera device and electronic equipment

Abstract

The object of the present invention is to provide a driving device, the connection strength between the shell and the base is high and it is not easy to fall off. Another object of the present invention is to provide a photographic device, which includes the above-mentioned driving device. Another object of the present invention is to provide an electronic device, which includes the above-mentioned photographic device. To achieve the above-mentioned purpose, the driving device includes a shell and a base, wherein the shell includes a step portion at each corner thereof, and the step portion includes a step flat wall extending in the intersection direction of the axis direction; the base has a boss protruding forward from the front side; the table surface of the boss is bonded to the rear side surface of the step flat wall.

Description

Technical Field

[0001] The invention relates to a driving device, a photographing device and an electronic device. Background Art

[0002] In the camera device of the electronic device, the driving device drives the movement of the lens in the camera device through the interaction between the magnetic field generated by the coil when it is energized and the magnetic field generated by the magnet, thereby achieving the purpose of zooming.

[0003] The outer shell of the driving device currently on the market is glued and fixed to the base, and the connection surface between the outer shell and the base is glued on the side wall of the base and the side wall of the outer shell.

[0004] However, the inventors have found that the connection surface area between the outer shell and the base of the existing drive device is small, and it is easy to become loose or even debonded during use. Summary of the invention

[0005] The object of the present invention is to provide a driving device, the connection strength between the housing and the base of which is high and is not prone to falling off.

[0006] Another object of the present invention is to provide a photographic device comprising the above-mentioned driving device.

[0007] Another object of the present invention is to provide an electronic device comprising the above-mentioned camera device.

[0008] A driving device for achieving the above-mentioned purpose comprises a housing and a base, wherein the housing has an axial direction and a polygonal shape, and comprises an outer peripheral side wall and a top wall connected to the front side of the outer peripheral side wall, wherein the top wall has an opening allowing light to pass through, wherein:

[0009] The housing includes a step portion at each corner thereof, and the step portion includes:

[0010] A stepped flat wall extending in a direction intersecting the axial direction;

[0011] The base has a boss protruding forward from the front side;

[0012] The table surface of the boss is bonded to the rear side surface of the step flat wall.

[0013] In one or more embodiments, the housing includes a first step portion and a second step portion arranged in a stepped shape at each corner thereof, and the first step portion includes:

[0014] a first step wall extending from the outer peripheral side of the top wall to the rear side, and

[0015] A first step flat wall extending from the rear side of the first step vertical wall along the direction of intersection of the axis;

[0016] The second step portion includes:

[0017] a second step vertical wall extending from the first step flat wall to the rear side, and

[0018] A second step flat wall extending from the rear side of the second step vertical wall along the direction of intersection of the axis;

[0019] The inner circumferential wall surface of the second step vertical wall and the inner circumferential wall surface of the adjacent outer circumferential side wall form a magnet mounting portion, and the rear side surface of the second step flat wall is bonded to the table surface of the boss.

[0020] In one or more embodiments, the shell further includes an inner peripheral side wall at each corner thereof, the inner peripheral side wall extending from the inner peripheral side of the top wall to the rear side, and the inner peripheral side wall and the second step wall are opposite to each other in a direction orthogonal to the axis.

[0021] In one or more embodiments, the driving device further comprises:

[0022] A magnet disposed on the magnet mounting portion;

[0023] a lens carrier disposed in the housing;

[0024] A spring sheet supporting the lens carrier on at least one of the front side and the rear side of the lens carrier; and

[0025] A coil disposed around the outer circumference of the lens carrier;

[0026] The magnet has side surfaces which are in close contact with the inner circumferential wall surface of the second step vertical wall and the inner circumferential wall surface of the adjacent outer circumferential side wall in the magnet mounting portion.

[0027] In one or more embodiments, a front spring sheet for supporting the lens carrier is provided on the flat wall of the first step.

[0028] In one or more embodiments, the inner peripheral side surface of the first step flat wall is configured as a positioning surface of the front side of the magnet.

[0029] In one or more embodiments, the shell is rectangular, and the bosses are arranged at four corners of the base.

[0030] In one or more embodiments, a slot is provided on the inner peripheral surface of the outer peripheral side wall of the shell, and a snap key is provided on the base corresponding to the slot. In the assembled state, the snap key is snapped into the slot.

[0031] A photographic device for achieving the aforementioned object comprises the driving device as described above.

[0032] An electronic device for achieving the aforementioned object includes the aforementioned camera device.

[0033] The beneficial effects of the present invention are:

[0034] The housing in the driving device additionally increases the contact between the table top and the step flat wall, thereby increasing the bonding area between the housing and the base, which plays a role in improving the impact resistance and peeling resistance of the driving device housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0036] Figure 1 An exploded schematic diagram of an embodiment of a driving device is shown;

[0037] Figure 2 is a schematic diagram of a base in a driving device;

[0038] Figure 3 It is a three-dimensional schematic diagram of a housing in a driving device in one direction;

[0039] Figure 4 It is a three-dimensional schematic diagram of the housing in the driving device from another direction;

[0040] Figure 5 is a cross-sectional schematic diagram of a driving device;

[0041] Figure 6 This is a three-dimensional schematic diagram of the drive device in the assembled state. DETAILED DESCRIPTION

[0042] The following discloses a variety of different implementation methods or embodiments of the subject technical solution. To simplify the disclosure, specific examples of each element and arrangement are described below. Of course, these are only examples and are not intended to limit the scope of protection of the present application. For example, the first feature subsequently recorded in the specification is formed above or on the second feature, which may include an implementation method in which the first and second features are formed by direct connection, and may also include an implementation method in which an additional feature is formed between the first and second features, so that the first and second features may not be directly connected. In addition, the figure marks and / or letters may be repeated in different examples in these disclosures. This repetition is for simplicity and clarity, and does not itself represent the relationship between the various implementation methods and / or structures to be discussed. Further, when the first element is described in a manner connected or combined with the second element, the description includes an implementation method in which the first and second elements are directly connected or combined with each other, and also includes the use of one or more other intervening elements to indirectly connect or combine the first and second elements.

[0043] It should be noted that, when used, the terms up, down, left, right, front, back, top, bottom, positive, negative, clockwise and counterclockwise in the following description are used only for convenience and do not imply any specific fixed direction. In fact, they are used to reflect the relative position and / or direction between various parts of an object.

[0044] The driving device is arranged in the photographing device and is used to drive the lens to move along the optical axis, thereby achieving a zooming effect. Figure 1 A schematic diagram of an exploded view of an embodiment of a driving device is shown, wherein the driving device comprises a shell 1 and a base 2 arranged at the rear side of the shell 1 for supporting the shell 1, and a front spring piece 3, a rear spring piece 4, a lens carrier 5, a magnet 6 and a coil 7 are respectively arranged in the shell 1.

[0045] Figure 2 is a schematic diagram of the base 2 in the driving device, Figure 3 It is a three-dimensional schematic diagram of the housing 1 in the driving device in one direction. Figure 4 This is a three-dimensional schematic diagram of the housing 1 in the drive device from another direction. Figures 2 to 4 The housing 1 of the driving device is polygonal in shape, and has an axial direction along the optical axis of the driving device. The housing 1 includes an outer peripheral side wall 16 and a top wall 17 connected to the front side of the outer peripheral side wall 16. An opening 18 is provided on the top wall 17 for allowing light to pass through the camera device, and the lens 8 extends from the opening 18.

[0046] Each corner 10 of the housing 1 includes a step portion 11 that is recessed downward in the thickness direction of the housing 1 and forms a step shape. The step portion 11 includes a step flat wall 110 extending in a direction intersecting the axial direction of the housing 1 .

[0047] Please continue to see Figure 2 The base 2 has a boss 21 protruding from the base 2 to the front side thereof and a rib 22 arranged around the base 2. The top surface of the boss 21 has a table surface 210. In the assembled state, the housing 1 and the base 2 are connected, and the table surface 210 of the boss 21 is bonded to the rear side surface (i.e., the side opposite to the table surface) of the step flat wall 110, and the rib 22 is in contact with the outer peripheral side wall 16 of the housing 1.

[0048] Figure 5 For a cross-sectional view of the drive unit, see Figure 5, other components of the driving device are described below. The lens carrier 5 is arranged in the housing 1, and is used to support the lens 8. The front spring piece 3 is arranged between the lens carrier 5 and the housing 1, and the rear spring piece 4 is arranged between the lens carrier 5 and the base 2. The front spring piece 3 and the rear spring piece 4 elastically hold the lens carrier 5 in the housing 1, and allow the lens carrier 5 to move along the optical axis direction (i.e., the axial direction of the housing 1) when subjected to external force. Among them, in an embodiment different from the figure, the front spring piece 3 and the rear spring piece 4 are arranged on at least one side of the front side and the rear side of the lens carrier 5, and can also play the role of elastically holding the lens carrier 5.

[0049] The coil 7 is disposed around the outer circumference of the lens carrier 5, and generates a circuit on the outer circumference of the lens carrier 5 after power is supplied. The magnet 6 is disposed on the inner circumference of the housing 1. Figure 3 as well as Figure 5 As shown, the magnet 6 is adsorbed on the housing 1 through the side surface 60 of the magnet 6, and is separated from the coil 7 by a distance. When current is passed through the coil, the energized coil 7 is acted upon by the external magnetic field generated by the magnet 6 to generate an Ampere force, thereby driving the lens carrier and the lens to move along the optical axis direction (i.e., the axial direction of the housing 1).

[0050] Figure 6 This is a three-dimensional schematic diagram of the drive device in the assembled state, combined with Figures 1 to 6 It can be seen that in the assembled state, the rib 22 on the base 2 in the driving device is in contact with the peripheral side wall 16 of the shell 1, the table 210 of the base boss 21 and the rear side of the step flat wall 110 respectively. At this time, the rib 22 and the peripheral side wall 16, the table 210 and the step flat wall 110 are respectively connected by gluing or the like to fix the shell 1 and the base 2.

[0051] Compared with the shell of the traditional driving device, in which the connection between the base and the upper cover is only achieved by gluing the ribs on the base to the side walls of the upper cover, the shell 1 in the present driving device additionally increases the contact between the table top 210 and the step flat wall 110, thereby increasing the gluing area between the shell 1 and the base 2, thereby improving the impact and peeling resistance of the driving device shell 1.

[0052] Although one embodiment of the drive device is described above, in other embodiments of the drive device, the housing of the drive device may have more details in many aspects relative to the above embodiment, and at least a part of these details may have various variations. At least a part of these details and variations will be described below with some embodiments.

[0053] Please continue to see Figures 2 to 3In one embodiment of the driving device, the housing 1 is a polygonal body, and each corner 10 of the housing 1 includes a plurality of depressions downward along the thickness direction of the housing 1, and each corner 11 forms a first step portion 12 and a second step portion 13 in a step shape. The first step portion 12 includes a first step vertical wall 121 extending backward from the outer peripheral side of the top wall 17, and a first step flat wall 122 extending from the rear side of the first step vertical wall 121 in a direction intersecting the axis of the housing 1. The second step portion 13 includes a second step vertical wall 131 extending backward from the first step flat wall 122, and a second step flat wall 132 extending from the rear side of the second step vertical wall 131 in a direction intersecting the axis of the housing 1, thereby forming two step-shaped first step portions 12 and second step portions 13. The inner peripheral wall surface of the second step vertical wall 131 and the inner peripheral wall surface of the outer peripheral side wall 16 adjacent thereto jointly form a magnet mounting portion 130 for mounting the magnet 6. The rear side surface (i.e., the side opposite to the table surface) of the first step flat wall 122 is bonded to the table surface 210 of the boss 21. In this embodiment, the magnet 6 is contacted and adsorbed by the side surface 60 of the magnet 6 and the inner peripheral wall surface of the second step vertical wall 131 and the inner peripheral wall surface of the adjacent outer peripheral side wall 16. Since the side surface 60 of the magnet 6 is a magnetic field intensive area, the side surface 60 of the magnet 6 is in direct contact with the housing 1 to prevent the magnetic field loss caused by the gap, thereby achieving a better magnetic conductivity.

[0054] Please see Figure 3 as well as Figure 4 In one embodiment, the housing 1 further comprises an inner peripheral side wall 14, which extends from the top opening 18 on the inner peripheral side of the top wall 17 toward the rear side, and the inner peripheral side wall 14 is configured to correspond to each second step vertical wall 131 and to be opposite to each other in a direction orthogonal to the axis of the housing 1. Specifically, the inner peripheral side wall 14 is arranged on the outer side of each magnet 6 during assembly, and the area where the inner peripheral side wall 14 is located becomes an effective magnetic field area through the magnetic conductivity of the magnet 6. Figure 5 It can be seen that the coil 7 is arranged between the magnet 6 and the inner side wall 14, and a magnetic circuit is formed between the inner side wall 14 and the side of the magnet 6 opposite to the coil. When current is passed through the coil 7, the magnetic circuit can generate Ampere force on the energized coil, thereby driving the coil 7 to move.

[0055] Please see Figure 5 In one embodiment, the front spring piece 3 is disposed between the first step flat wall 122 of the first step portion 12 and the lens carrier 5 , and the first step flat wall 122 is configured to support the front spring piece 3 .

[0056] In one embodiment, the upper surface of the magnet 6 is limited by the first step flat wall 122 of the first step portion 12 , and the first step flat wall 122 is configured as a positioning surface on the front side of the magnet 6 to play a role in positioning the front side of the magnet 6 .

[0057] In one embodiment of the driving device, the shell 1 is a rectangular body, and the step portions 11 are arranged at the four corners 10 of the rectangular body. Correspondingly, the bosses 21 are arranged at the four top corners of the base 2. In some other embodiments different from those shown in the figure, the shell 1 can also be other suitable polygonal shapes.

[0058] In one embodiment of the driving device, a slot 114 is provided on the inner side of the outer peripheral side wall 16 of the housing 1, and correspondingly, a snap key 124 is provided at a position corresponding to the slot 114 on the base 2. When the driving device is assembled, the snap key 124 is snapped into the slot 114, thereby further enhancing the firmness of the housing 1 and the base 2 after assembly. Optionally, during assembly, an adhesive may also be applied to the interface between the snap key 124 and the slot 114, thereby gluing the snap key 124 and the slot 114 together to further enhance the firmness of the assembly. Optionally, the snap key 124 may be as follows: Figure 2 As shown, a protrusion is arranged on the retaining wall 125 on the base 2.

[0059] Please continue to see Figure 1 In one embodiment of the driving device, a coil slot 50 is provided in the middle of the outer circumference of the lens carrier 5 , and the coil 7 is surrounded and arranged in the coil slot 50 , thereby being fixed on the lens carrier 5 .

[0060] In one embodiment of the driving device, the driving device is arranged in a photographing device, and the lens 8 is the lens of the photographing device.

[0061] In one embodiment of the camera device, the camera device is disposed in an electronic device such as a notebook computer, a mobile phone, etc.

[0062] Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A driving device, comprising a housing and a base, wherein the housing has an axial direction and a polygonal shape, and comprises an outer peripheral side wall and a top wall connected to the front side of the outer peripheral side wall, wherein the top wall has an opening allowing light to pass through, characterized in that: The housing includes a step portion at each corner thereof, and the step portion includes: A stepped flat wall extending in a direction intersecting the axial direction; The base has a boss protruding forward from the front side; The table surface of the boss is bonded to the rear side surface of the step flat wall; The housing includes a first step portion and a second step portion arranged in a stepped shape at each corner thereof, wherein the first step portion includes: a first step wall extending from the outer peripheral side of the top wall to the rear side, and A first step flat wall extending from the rear side of the first step vertical wall along the direction of intersection of the axis; The second step portion includes: a second step vertical wall extending from the first step flat wall to the rear side, and A second step flat wall extending from the rear side of the second step vertical wall along the direction of intersection of the axis; The inner circumferential wall surface of the second step vertical wall and the inner circumferential wall surface of the adjacent outer circumferential side wall form a magnet mounting portion, and the rear side surface of the second step flat wall is bonded to the table surface of the boss.

2. The driving device according to claim 1, characterized in that: The housing further includes an inner peripheral side wall at each corner thereof, the inner peripheral side wall extending from the inner peripheral side of the top wall toward the rear side, and the inner peripheral side wall and the second step wall facing each other in a direction orthogonal to the axis.

3. The driving device according to claim 1, characterized in that: The driving device further comprises: A magnet disposed on the magnet mounting portion; a lens carrier disposed in the housing; A spring sheet supporting the lens carrier on at least one of the front side and the rear side of the lens carrier; and A coil disposed around the outer circumference of the lens carrier; The magnet has side surfaces which are in close contact with the inner circumferential wall surface of the second step vertical wall and the inner circumferential wall surface of the adjacent outer circumferential side wall in the magnet mounting portion.

4. The driving device according to claim 3, characterized in that: A front spring sheet supporting the lens carrier is arranged on the flat wall of the first step.

5. The driving device according to claim 2, characterized in that: The inner peripheral side surface of the first step flat wall is configured as a positioning surface of the front side of the magnet.

6. The driving device according to claim 1, characterized in that: The shell is rectangular, and the bosses are arranged at the four corners of the base.

7. The driving device according to claim 1, characterized in that: A card slot is provided on the inner peripheral surface of the outer peripheral side wall of the shell, and a snap key is provided on the base corresponding to the card slot. In the assembled state, the snap key is snapped into the card slot.

8. A photographic device, characterized in that: Comprising a driving device as claimed in any one of claims 1 to 7.

9. An electronic device, characterized in that: A photographic device comprising the photographic device of claim 8.

Images