A VCM motor, a camera module and a mobile terminal

Abstract

The utility model discloses a VCM motor, camera module and mobile terminal relate to VCM technical field, including casing and with the base of casing adaptation, be equipped with the carrier and drive the magnet of carrier between casing and base, the carrier top is connected with casing through upper spring piece, the carrier bottom is connected with base through lower spring piece, and is equipped with the lens in the carrier, a plurality of detection holes of adapting base terminal are equipped in lower spring piece, the detection hole is used for after laser welding through the detection spot depth state of external equipment access, beneficial effect: the depth state of spot is directly detected through detection hole, effectively solved the problem that the conventional motor cannot pass through the appearance detection welding state after welding, greatly improved the controllability of welding quality, ensured the stability of product.

Description

Technical Field

[0001] This utility model relates to the field of VCM technology, specifically to a VCM motor, camera module, and mobile terminal. Background Technology

[0002] A VCM (Voice Coil Motor) is a type of motor used in electronics. Because its operating principle is similar to that of a loudspeaker, it is called a voice coil motor and is characterized by high frequency response and high precision. Its main principle is to control the stretching position of a spring by changing the magnitude of the direct current in the coil within a permanent magnetic field, thereby driving the motor's up-and-down movement. Mobile phone cameras widely use VCMs to achieve autofocus functionality; the VCM allows adjustment of the lens position to present a clear image.

[0003] Currently, quality control of the welding process is crucial in the manufacturing of VCM motors. Laser welding is commonly used to connect the housing and base, as well as the springs and other components in VCM motors. However, existing welding quality inspection methods have significant limitations. After welding, it is difficult to accurately detect the depth of the weld joints. Traditional inspection methods, such as visual inspection, can only observe whether there are obvious defects on the surface of the weld joint, but cannot determine whether the internal depth of the weld joint meets the standard. The weld joint depth directly affects the connection stability and overall performance of the VCM motor. If the weld joint is too shallow, during long-term use, factors such as vibration and temperature changes may cause the connection to loosen, leading to lens misalignment, affecting the focusing accuracy of the camera module, and resulting in blurry images. If the weld joint is too deep, it may damage the material structure of the welded area, similarly reducing the reliability of the VCM motor.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, the purpose of this utility model is to propose a VCM motor, camera module and mobile terminal to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] The technical solution of this utility model is implemented as follows:

[0007] on the one hand:

[0008] A VCM motor includes a housing and a base adapted to the housing. A carrier and a magnet for driving the carrier are disposed between the housing and the base. The top of the carrier is connected to the housing via an upper spring, and the bottom of the carrier is connected to the base via a lower spring. A lens is disposed inside the carrier. The lower spring has a plurality of detection holes adapted to the wiring terminals of the base. The detection holes are used to detect the depth of the weld joint by connecting to an external device after laser welding.

[0009] Furthermore, at least one set of detection holes is provided, and the detection holes penetrate the lower spring sheet.

[0010] Furthermore, the width of the detection hole is 0.2-0.5 mm and the length is 1-3 mm.

[0011] Furthermore, the top of the base is provided with several limiting posts, and the housing and the base form a contact surface with a gap through the limiting posts.

[0012] Furthermore, the gap between the contact surfaces is 0.03-0.05 mm.

[0013] Furthermore, the length of the limiting post is 2.5–3.5 mm and the diameter is 0.8–1.2 mm.

[0014] Furthermore, the top of the housing is provided with several positioning grooves for positioning markings.

[0015] on the other hand:

[0016] This utility model also provides a camera module, which includes the aforementioned VCM motor.

[0017] Meanwhile, a mobile terminal is provided, which includes the aforementioned camera module. The mobile terminal can be any one of a mobile phone, a laptop computer, or an information terminal.

[0018] The mobile terminal includes any one of a mobile phone, a laptop computer, or an information terminal.

[0019] The beneficial effects of this utility model are:

[0020] 1. This utility model achieves advantages in welding quality inspection. By setting inspection holes on the lower spring of the VCM motor, after laser welding is completed, the depth of the weld can be directly inspected through the inspection holes using equipment such as AOI. This effectively solves the problem that the welding status cannot be inspected visually after conventional motor welding, greatly improves the controllability of welding quality, and ensures the stability of the product.

[0021] 2. This utility model achieves improved mechanical stroke control by lengthening and thickening the limiting post and reserving a gap of 0.03-0.05mm on the contact surface between the housing and the base. The mechanical stroke is controlled by the contact surface between the top surface of the limiting post and the housing, which improves the accuracy of mechanical stroke control, reduces the impact of machining errors on the stroke, enhances the consistency of the motor's mechanical stroke, and thus improves the overall performance of the motor.

[0022] 3. This utility model improves the convenience of production and assembly. The positioning groove at the top of the shell plays an important role in product identification and error prevention during the production and assembly process. Operators can quickly and accurately identify the product through the positioning groove, avoiding production errors caused by misoperation, improving production efficiency and reducing product loss.

[0023] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a structural schematic diagram of the VCM motor, camera module, and mobile terminal according to an embodiment of the present utility model;

[0027] Figure 2 A schematic diagram of the detection hole of the VCM motor, camera module and mobile terminal according to an embodiment of the present utility model;

[0028] Figure 3 A schematic diagram showing the disassembled VCM motor, camera module, and mobile terminal according to an embodiment of the present utility model;

[0029] Figure 4 A schematic diagram of the housing of the VCM motor, camera module, and mobile terminal according to an embodiment of the present utility model.

[0030] In the picture:

[0031] 1. Housing; 2. Base; 3. Carrier; 4. Magnet; 5. Upper spring; 6. Lens; 7. Detection hole; 8. Limiting post; 9. Positioning groove; 10. Lower spring; 11. Supporting component. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0033] According to an embodiment of the present invention, a VCM motor, a camera module, and a mobile terminal are provided.

[0034] like Figures 1-3 As shown, a VCM motor, camera module, and mobile terminal include a housing 1 and a base 2 adapted to the housing 1. A carrier 3 and a magnet 4 for driving the carrier 3 are provided between the housing 1 and the base 2. The top of the carrier 3 is connected to the housing 1 via an upper spring 5, and the bottom of the carrier 3 is connected to the base 2 via a lower spring 10. A lens 6 is provided inside the carrier 3. The lower spring 10 is provided with a plurality of detection holes 7 adapted to the wiring terminals of the base 2. The detection holes 7 are used to detect the depth of the weld point by connecting to an external device after laser welding.

[0035] In addition, at least one set of detection holes 7 is provided, and the detection holes 7 penetrate the lower spring piece 10. The width of the detection hole 7 is 0.2-0.5mm, and the length is 1-3mm.

[0036] In this technical solution, the inspection hole 7 is used to inspect the weld depth after laser welding using an AOI device. Specifically, after laser welding is completed, the weld depth can be directly inspected through the inspection hole 7 using an AOI device, thereby accurately determining the welding effect. This effectively solves the problem of not being able to visually inspect the welding status after conventional motor welding, improves the controllability of welding quality, and ensures product stability.

[0037] In addition, the top of the base 2 is provided with several limiting posts 8, and the housing 1 and the base 2 form a contact surface with a gap through the limiting posts 8. The gap between the contact surfaces is 0.03-0.05mm. The length of the limiting post 8 is 2.5-3.5mm and the diameter is 0.8-1.2mm.

[0038] This technical solution lengthens and thickens the limiting post 8, reducing its conventional length to only 1 / 3 of its current state. A gap of 0.03-0.05mm is maintained at the contact surface of the gap. The mechanical stroke is controlled by the contact surface between the top surface of the limiting post 8 and the housing 1. Compared to the conventional method of controlling the mechanical stroke by managing the contact surface dimensions between the housing and the base, this improves the precision of mechanical stroke control, reduces the impact of machining errors on the stroke, enhances the consistency of the motor's mechanical stroke, and improves the overall performance of the motor.

[0039] Using the above technical solution, in application, first install the housing 1 and base 2, then place the carrier 3 and magnet 4 between the housing 1 and base 2. Install the upper spring piece 5 on top of the carrier 3 and connect it to the housing 1, install the lower spring piece 10 on the bottom of the carrier 3 and connect it to the base 2, and install the lens 6 inside the carrier 3. During laser welding, connect an external inspection device, such as an AOI device, to the inspection hole 7 on the lower spring piece 10. After welding, the depth of the weld point can be inspected through the inspection hole 7 to determine whether the welding quality is acceptable.

[0040] In addition, for the installation of the limiting post 8, the base 2 with a specific size limiting post 8, which is 2.5-3.5mm long and 0.8-1.2mm in diameter, is assembled with the housing 1 to ensure that the housing 1 and the base 2 form a contact surface with a gap of 0.03-0.05mm through the limiting post 8, so as to precisely control the mechanical stroke.

[0041] In addition, the top of the housing 1 is provided with several positioning grooves 9 for positioning markings.

[0042] In product application, the positioning groove 9 plays a crucial role in product identification and error prevention. During production and assembly, operators can quickly and accurately identify products using the positioning groove 9, avoiding production errors caused by misoperation, improving production efficiency, and reducing product waste.

[0043] In addition, such as Figure 4 As shown, during the stamping of the housing 1, the bearing 11 is trimmed to remove the root rounded corner, forming a flat area. This effectively eliminates the interference of the rounded corner with the assembly of the upper and lower spring sheet frames, reduces the difficulty of assembling the upper and lower spring sheets, and ensures that the upper and lower spring sheets can be installed and work normally, thereby improving the overall performance and stability of the motor.

[0044] Specifically, operators can quickly identify the product orientation and model through the positioning groove 9 at the top of the housing 1, avoiding assembly errors. During the stamping of the housing 1, the bearing component 11 is trimmed strictly according to the process requirements, removing the root rounded corners to form a flat area, which facilitates the assembly of the upper and lower spring pieces.

[0045] In addition, in the implementation of the camera module, the aforementioned VCM motor is assembled as a core component, and together with other related optical components and circuit components, a complete camera module is formed.

[0046] Furthermore, in the implementation of mobile terminals, a camera module containing the aforementioned VCM motor will be installed in mobile devices such as mobile phones, laptops, or information terminals to enable the mobile terminal to take photos and videos.

[0047] In summary, the following effects can be achieved by utilizing the above-described technical solution of this utility model:

[0048] 1. This utility model achieves advantages in welding quality inspection. By setting a detection hole 7 on the lower spring 10 of the VCM motor, after laser welding is completed, the depth of the weld point can be directly detected through the detection hole 7 using equipment such as AOI. This effectively solves the problem that the welding status cannot be visually inspected after conventional motor welding, greatly improves the controllability of welding quality, and ensures the stability of the product.

[0049] 2. This utility model improves mechanical stroke control by lengthening and thickening the limiting post 8 and leaving a gap of 0.03-0.05mm at the contact surface between the housing 1 and the base 2. The mechanical stroke is controlled by the contact surface between the top surface of the limiting post 8 and the housing 1, which improves the accuracy of mechanical stroke control, reduces the impact of machining errors on the stroke, enhances the consistency of the motor's mechanical stroke, and thus improves the overall performance of the motor.

[0050] 3. This utility model improves the convenience of production and assembly. The positioning groove 9 at the top of the shell 1 plays an important role in product identification and error prevention during product production and assembly. Operators can quickly and accurately identify products through the positioning groove 9, avoiding production errors caused by misoperation, improving production efficiency, and reducing product loss.

[0051] 4. This utility model optimizes the assembly performance of the spring sheet. By performing an edge trimming process on the bearing part 11 during the stamping of the housing 1, the root rounded corner is removed to form a flat area, which effectively eliminates the interference of the rounded corner on the assembly of the upper and lower spring sheet frames, reduces the difficulty of assembling the upper and lower spring sheets, ensures that the upper and lower spring sheets can be installed and work normally, and further improves the overall performance and stability of the motor.

[0052] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A VCM motor, comprising a housing (1) and a base (2) adapted to the housing (1), wherein a carrier (3) and a magnet (4) for driving the carrier (3) are disposed between the housing (1) and the base (2), the top of the carrier (3) is connected to the housing (1) via an upper spring piece (5), the bottom of the carrier (3) is connected to the base (2) via a lower spring piece (10), and a lens (6) is disposed inside the carrier (3), characterized in that, The lower spring (10) is provided with a plurality of detection holes (7) adapted to the wiring terminals of the base (2). The detection holes (7) are used to detect the depth of the weld point by connecting to an external device after laser welding.

2. A VCM motor according to claim 1, characterized in that, At least one set of detection holes (7) are provided, and the detection holes (7) penetrate the lower spring sheet (10).

3. A VCM motor according to claim 2, characterized in that, The detection hole (7) has a width of 0.2-0.5 mm and a length of 1-3 mm.

4. A VCM motor according to claim 1, characterized in that, The base (2) has several limiting posts (8) at its top, and the housing (1) and the base (2) form a contact surface with a gap through the limiting posts (8).

5. A VCM motor according to claim 4, characterized in that, The gap between the contact surfaces is 0.03-0.05 mm.

6. A VCM motor according to claim 5, characterized in that, The length of the limiting post (8) is 2.5 to 3.5 mm and the diameter is 0.8 to 1.2 mm.

7. A VCM motor according to claim 1, characterized in that, The top of the housing (1) is provided with several positioning grooves (9) for positioning marking.

8. A camera module, characterized in that, The VCM motor included in any one of claims 1-7.

9. A mobile terminal, characterized in that, Includes the camera module as described in claim 8.

10. A mobile terminal according to claim 9, characterized in that, The mobile terminal includes any one of a mobile phone, a laptop computer, or an information terminal.

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