Base for lens driving motor, lens driving motor and mobile terminal

Abstract

The present invention provides a base for a lens drive motor, a lens drive motor and a mobile terminal. Among them, a base for a lens drive motor is characterized by comprising: a base body, the base body having a central hole, a plate-like structure arranged at the central hole; a plurality of end pins, the end pins being arranged at the corners of the base body, and the first end of each end pin being exposed on the upper surface of the base body, and the second end of each end pin extending downward and exposed on the side of the base body. The present invention solves the problem of unstable connection between the base body and the end pins of the lens drive motor in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of camera equipment, and in particular to a base for a lens driving motor, a lens driving motor and a mobile terminal. Background Art

[0002] With the diversification of digital products, digital devices equipped with cameras or camcorders, such as mobile phones and multimedia players, have been rapidly developed and widely used. The above-mentioned cameras or cameras usually use lenses with adjustable focal length or automatic focus, and the adjustment process is to change the position of the lens, usually using a drive motor to drive the lens to move. The optical zoom driver changes the focal length of the lens group by adjusting the lens position, thereby achieving the effect of zooming.

[0003] It should be pointed out that the lens drive motor installed in miniaturized products such as mobile phones is a micro motor. Such lens drive motors are relatively precise, and it is difficult to use a terminal structure composed of a conductive sheet and a spring. Therefore, a more reliable and stable terminal is urgently needed to meet the use requirements of micro lens drive motors. However, it is precisely because of the miniaturization of the motor that there are certain risks in the structural design of the terminal. We know that the thickness of a general terminal is often only tens of microns, and the tiny and weak terminal is extremely fragile and unstable.

[0004] The base used in the existing optical zoom driver needs to be embedded with the end pins to ensure the electrical connection of the base. The usual practice is to set the end pin jack during the production of the base and insert the end pin into the base body. However, this base is a test of the fatigue resistance and high shock resistance of whether the terminal can rebound to the original position under long-term use and vibration in various conditions and environments, and it is easy to cause unstable connection between the end pin and the base body. In fact, once the mobile phone is subjected to impact such as falling, it is very easy to cause deformation, detachment and breakage of the terminal at the contact point inside the motor. In this way, the electrical connection effect of the terminal cannot be normally exerted, resulting in the problem that the motor cannot be driven, which leads to the loose connection between the end pin and the base body, affecting the use effect of the digital device.

[0005] As can be seen from the above, the prior art has the problem of unstable connection between the base body and the end pins of the lens driving motor. Summary of the invention

[0006] The main purpose of the present invention is to provide a base for a lens driving motor, a lens driving motor and a mobile terminal, so as to solve the problem of unstable connection between the base body and the end pin of the lens driving motor in the prior art.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a base for a lens driving motor, comprising: a base body, the base body having a central hole, a plate-like structure being arranged at the central hole; a plurality of end feet, the end feet being arranged at the corners of the base body, and the first end of each end foot being exposed on the upper surface of the base body, and the second end of each end foot extending downward and being exposed on the side of the base body.

[0008] Furthermore, the end of the second end of the end foot is flush with the lower surface of the base body or is located above the lower surface.

[0009] Furthermore, a relief recess is provided on the side surface of the base body at a corner, and the second end of the end foot passes through the base body and extends into the relief recess.

[0010] Furthermore, a positioning structure is arranged in the avoidance recess, the positioning structure has a positioning groove, and a part of the second end of the end foot is embedded in the positioning groove.

[0011] Furthermore, the end leg includes a first section and a second section that are bent in sequence and perpendicular to each other, and the first section serves as the first end and the second section serves as the second end.

[0012] Furthermore, there are two plate-like structures, both of which are connected to the hole wall of the central hole and cover part of the central hole, so that the opening area of ​​the central hole is composed of a first straight line segment, a first arc segment, a second straight line segment and a second arc segment connected end to end in sequence.

[0013] Further, the first straight line segment and the second straight line segment are parallel to at least one straight side segment of the base body.

[0014] Furthermore, the number of the end feet is two, the base body has four corners, and an end foot is respectively provided at two adjacent corners, and the two end feet are parallel.

[0015] According to another aspect of the present invention, a lens driving motor is provided, comprising the above-mentioned base.

[0016] According to another aspect of the present invention, there is provided a mobile terminal including a camera, wherein the camera includes the lens driving motor.

[0017] By applying the technical solution of the present invention, the base for the lens driving motor in the present application comprises a base body and a plurality of end pins. The base body has a central hole, and a plate-shaped structure is arranged at the central hole; the end pins are arranged at the corners of the base body, and the first end of each end pin is exposed on the upper surface of the base body, and the second end of each end pin extends downward and is exposed on the side of the base body.

[0018] When using the base for the lens drive motor of the above structure, by setting the two end pins at the two corners of the base body respectively, the two end pins can be prevented from contacting each other during the electrical connection process, thereby preventing the occurrence of a short circuit. By exposing the first end of the end pin to the upper surface of the base body and the second end of each end pin extending from the lower surface of the base body, it is possible to ensure that the end pin can achieve the function of electrical connection while ensuring the use strength of the end pin and avoid looseness between the end pin and the base body, thereby ensuring that the base can work normally and stably. In addition, the base for the lens drive motor in the present application has a simple structure and is easy to process.

[0019] The present invention is to design a terminal pin connection structure suitable for the base body in combination with the base structure. The terminal pin structure and the base body are an integrated structure, and on this basis, the terminal shape itself is further structurally improved to ensure the stability of the connection and fixation between the terminal pin and the base, so that it has the characteristics of anti-deformation and high impact resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 A schematic structural diagram of a base according to a specific embodiment of the present invention is shown;

[0022] Figure 2 Shows Figure 1 A top view of the base in FIG.

[0023] Figure 3 Shows Figure 1 A schematic diagram of the structure of the base without the corner where the end feet are located;

[0024] Figure 4 Shows Figure 1 Schematic diagram of the structure of the end pin;

[0025] Figure 5 Shows Figure 1 Bottom view of

[0026] The above drawings include the following reference numerals:

[0027] 10. Base body; 11. Corner; 12. Straight edge section; 16. Avoidance recess; 17. Positioning groove; 20. End foot; 21. First section; 22. Second section; 30. Center hole; 33. Plate-like structure; 331. First straight line segment; 332. First arc segment; 333. Second straight line segment; 334. Second arc segment; 60. Hot riveting column; 70. Avoidance space. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0030] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0031] In order to solve the problem of unstable connection between the base body and the end pin of the lens driving motor in the prior art, the present application provides a base for a lens driving motor, a lens driving motor and a mobile terminal.

[0032] The mobile terminal in the present application includes a camera, and the camera includes the following lens driving motor.

[0033] Optionally, the mobile terminal may be a mobile phone, a portable information terminal, or a notebook computer.

[0034] The lens driving motor involved in the present application includes the following base. After the lens driving motor adopts the base with the following structure, the structure of the lens driving motor can be made more compact and the performance of the lens driving motor can be made more stable.

[0035] like Figures 1 to 4 As shown, the base for the lens driving motor in the present application includes a base body 10 and a plurality of end pins 20. The base body 10 has a central hole 30, and a plate-like structure 33 is arranged at the central hole 30; the end pins 20 are arranged at the corners 11 of the base body 10, and the first end of each end pin 20 is exposed on the upper surface of the base body 10, and the second end of each end pin 20 extends downward and is exposed on the side of the base body 10.

[0036] When using the base for the lens drive motor of the above structure, by setting the two end pins 20 at the two corners 11 of the base body 10 respectively, the two end pins 20 can be prevented from contacting each other during the electrical connection process, thereby preventing the occurrence of a short circuit. By exposing the first end of the end pin 20 to the upper surface of the base body 10 and the second end of each end pin 20 extending from the lower surface of the base body 10, it is possible to ensure that the end pin 20 can achieve the function of electrical connection while ensuring the use strength of the end pin 20 and avoiding looseness between the end pin 20 and the base body 10, thereby ensuring that the base can work normally and stably. In addition, the base for the lens drive motor in the present application has a simple structure and is easy to process.

[0037] It should be noted that the end foot 20 in the present invention is an integrally formed structure, so that the end foot 20 of the integrally formed structure is not easily deformed even if it is hit by an external force, and has the advantage of strong impact resistance.

[0038] Specifically, the base body 10 and the end foot 20 are inserted by injection molding. This arrangement can improve the pulling force of the end foot 20 in the base, effectively strengthen the bonding strength of the end foot 20 inside the base body 10, make the end foot 20 not easy to bend and fall off, and have obvious anti-impact and anti-deformation characteristics.

[0039] Specifically, the end of the second end of the end foot 20 is flush with or above the lower surface of the base body 10. By setting it in this way, the compactness of the entire base structure can be ensured, the protrusion of the local structure can be reduced, and thus the space occupied by the entire base can be reduced.

[0040] By such arrangement, during the process of insert molding of the base body 10 and the end leg 20 , the end leg 20 can be fixed by the surface exposed on the base body 10 , thereby preventing the end leg 20 from moving and causing deformation of the base body 10 during the process of insert molding.

[0041] It should be noted that during the molding process of the base body 10 and the end foot 20, the end foot 20 needs to be positioned. It is not enough to position it only by an exposed point, so that the entire end foot 20 cannot be accurately positioned in the base body 10, and it will be skewed. At this time, it is necessary to increase the positioning points to fix the end foot 20, thereby realizing the embedding process of the end foot 20 of the integrated base. Therefore, when positioning the end foot 20, the end foot 20 needs to provide at least two positioning points.

[0042] like Figure 1As shown, a side of the base body 10 is provided with an avoidance recess 16 at the position of the corner 11, and the second end of the end foot 20 passes through the base body 10 and extends into the avoidance recess 16. By providing the avoidance recess 16, the entire base can be clamped through the avoidance recess 16 during the installation of the entire base, so that the base is clamped at the position to be installed, and by providing the avoidance recess 16, the contact area between the base body 10 and the outside can be increased, thereby effectively increasing the stability of the base body 10.

[0043] Specifically, a positioning structure is provided in the avoidance recess 16, and the positioning structure has a positioning groove 17, and a part of the second end of the end foot 20 is embedded in the positioning groove 17. By such a configuration, it can be ensured that the end foot 20 and the base body 10 can be more closely fitted. Moreover, the positioning groove 17 can also be used to position the end foot 20, so as to prevent the end foot 20 from being deflected due to external force, thereby effectively ensuring the stability of the entire base during use.

[0044] like Figure 4 As shown, the end foot 20 includes a first section 21 and a second section 22 that are bent in sequence and perpendicular to each other, and the first section 21 serves as the first end, and the second section 22 serves as the second end. By setting it in this way, the contact area between the end foot 20 and the base body 10 can be increased, thereby ensuring that the end foot 20 and the base body 10 can be stably connected, and preventing the end foot 20 and the base body 10 from loosening. In addition, by forming the end foot 20 with the first section 21 and the second section 22 that are bent in sequence, the end foot 20 and the base body 10 can be in contact in different directions, thereby further ensuring the stable connection between the end foot 20 and the base body 10.

[0045] like Figure 1 As shown, there are two plate-like structures 33, and both plate-like structures 33 are connected to the hole wall of the central hole 30 and cover a part of the central hole 30, so that the opening area of ​​the central hole 30 is composed of a first straight line segment 331, a first arc segment 332, a second straight line segment 333, and a second arc segment 334 connected end to end in sequence. By providing the plate-like structure, the bottom of the base body 10 can better fit the filter, so that the base body 10 can not only support the various components of the lens drive motor, but also serve as a filter mounting bracket, so there is no need to set up a separate filter fixing bracket, saving manufacturing costs.

[0046] Specifically, the first straight line segment 331 and the second straight line segment 333 are parallel to at least one straight edge segment 12 of the base body 10. By setting it in this way, the base body 10 and the filter can be better fitted, and the first straight line segment 331 and the second straight line segment 333 provide more fixed support surfaces.

[0047] like Figure 5As shown, the base body 10 also has an escape space 70 below the plate-like structure 33. The bottom of the base body 10 also needs to be connected to a substrate as one of the camera modules to perform the camera function. Since there are usually many components such as capacitors and photosensitive chips protruding from the surface of the substrate of the camera module, the escape space 70 is provided on the base body 10 to reserve space for the accommodating components of the protruding part, that is, after being accommodated, there will be no mutual interference with the plate-like structure 33, thereby avoiding damage to the components.

[0048] like Figure 1 and Figure 3 As shown, there are two end pins 20, and the base body 10 has four corners 11. An end pin 20 is respectively arranged at two adjacent corners 11, and the two end pins 20 are parallel. By such an arrangement, the distance between the two end pins 20 can be reduced without short circuit. Since the distance between the two end pins 20 is reduced, it is easier to achieve electrical connection accordingly. Moreover, by such an arrangement, the stability of the base can be effectively guaranteed, so that the influence of vibration caused by the operation of the drive motor can be reduced during the operation of the drive motor.

[0049] Of course, the arrangement positions of the two end feet 20 are not limited to those shown in the drawings of the present invention. In a specific embodiment not shown in the drawings, the two end feet 20 can also be placed at each corner 11 suitable for the needs, including the diagonal position.

[0050] like Figure 1 As shown, a plurality of heat rivet posts 60 are also provided at the corners 11 of the base body 10. During the assembly process of the lens driving motor, the base body 10 can be fixedly connected with the heat rivet post holes of the lower spring through the heat rivet posts 60.

[0051] The lens driving motor of the present invention further comprises a lens support body, a coil, a plurality of magnets, a housing, an upper spring and a lower spring. The coil is wound around the outer periphery of the lens support body, the housing is located on the base and covers the outer sides of the coil, the upper spring and the lower spring, and the plurality of magnets are arranged between the housing and the coil along the circumference of the coil. Along the axial direction of the central hole 30 of the base, the upper spring is located above the lens support body, the lower spring is located below the lens support body, and the base is located below the lower spring.

[0052] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0053] 1. The bonding strength between the end foot 20 and the base is enhanced;

[0054] 2. Reduce the probability of deformation, floating, falling off, breaking and other undesirable phenomena of the end foot 20;

[0055] 3. The device has a simple structure and is easy to process;

[0056] 4. Solved the problem that the end foot is prone to deflection after being hit;

[0057] 5. Enhanced the electrical connection performance of the entire base;

[0058] 6. Make the camera performance of mobile terminals more stable.

[0059] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0060] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0061] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A base for a lens drive motor, characterized in that: include: A base body (10), the base body (10) having a central hole (30), a plate-like structure (33) being arranged at the central hole (30), and an escape space (70) being arranged below the plate-like structure (33) on the base body (10); a plurality of end feet (20), wherein the end feet (20) are arranged at a corner (11) of the base body (10), and a first end of each end foot (20) is exposed on the upper surface of the base body (10), and a second end of each end foot (20) extends downward and is exposed on a side surface of the base body (10); The end of the second end of the end foot (20) is flush with the lower surface of the base body (10) or is located above the lower surface; There are two plate-like structures (33), and both of the two plate-like structures (33) are connected to the hole wall of the central hole (30) and cover a part of the central hole (30), so that the opening area of ​​the central hole (30) is composed of a first straight line segment (331), a first arc segment (332), a second straight line segment (333) and a second arc segment (334) connected end to end in sequence; Insert injection molding is performed between the base body (10) and the end foot (20).

2. The base according to claim 1, characterized in that: A relief recess (16) is provided on the side surface of the base body (10) at the corner portion (11), and the second end of the end foot (20) passes through the base body (10) and extends into the relief recess (16).

3. The base according to claim 2, characterized in that: A positioning structure is arranged in the avoidance recess (16), wherein the positioning structure has a positioning groove (17), and a part of the second end of the end foot (20) is embedded in the positioning groove (17).

4. The base according to claim 1, characterized in that: The end foot (20) comprises a first section (21) and a second section (22) which are bent in sequence and perpendicular to each other, and the first section (21) serves as the first end, and the second section (22) serves as the second end.

5. The base according to claim 1, characterized in that: The first straight line segment (331) and the second straight line segment (333) are parallel to at least one straight edge segment (12) of the base body (10).

6. The base according to any one of claims 1 to 5, characterized in that: The number of the end feet (20) is two, the base body (10) has four corners (11), and one end foot (20) is respectively provided at two adjacent corners (11), and the two end feet (20) are parallel.

7. A lens driving motor, characterized in that: The invention comprises the base according to any one of claims 1 to 6.

8. A mobile terminal, characterized in that: A camera is included, the camera including the lens driving motor of claim 7.

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