Motor member and camera module motor member manufacturing method

Abstract

The present application relates to a kind of motor components and camera module motor component manufacturing method, motor component, comprising: holding assembly, holding assembly includes first holding piece and second holding piece, first holding piece is superposed in second holding piece, and at least one holding space is formed between first holding piece and second holding piece, at least one of first holding piece and second holding piece is provided with the opening hole of intercommunication holding space;Injection part, injection part is formed by injection molding on the outside of holding assembly;And at least one ball, ball is movably arranged in holding space, and ball at least partially exposes outside opening hole;By injection molding injection part on the outside of holding assembly, it can make holding assembly and ball inlay in motor component, to cancel the assembly step of ball, improve the precision of ball, it is advantageous to promote the performance of camera module motor.

Description

Technical Field

[0001] This invention relates to the field of motor technology for camera modules, and in particular to motor components and methods for manufacturing motor components for camera modules. Background Technology

[0002] As camera module performance improves, miniaturization becomes increasingly challenging. A trend towards integrated camera modules is emerging. Integrating some components together increases the level of integration, enabling miniaturization, reducing assembly steps, lowering assembly tolerances, improving precision, and ultimately enhancing performance.

[0003] In the motor of a camera module, the ball bearings are a crucial component, affecting the motor's movement. The assembly precision of these ball bearings directly impacts the camera module's performance. If there are height differences in the plane formed by multiple ball bearings, the camera module's image stabilization or focusing will experience tilting deviations, causing pixel shifts in the image sensor and affecting image quality. Increased clearance between the ball bearings and their grooves can also lead to focusing or image stabilization deviations, affecting image quality. Typically, the assembly precision of the ball bearings needs to be controlled within ±0.2μm. At this range, the first-pass yield of the camera module can reach 95%. If the assembly precision is relaxed to ±0.5μm, the first-pass yield drops significantly to 78%. Since the rework cost of a single camera module is high, frequent rework can lead to a substantial increase in the production cost of the camera module. For every 0.1μm reduction in the assembly precision of the ball bearings, the overall performance of the camera module decreases by 5% to 8% in terms of resolution, image stabilization, power consumption, and drop reliability. This performance degradation is particularly noticeable in some high-end modules such as periscope camera modules, micro-gimbal camera modules, and continuous zoom camera modules. Summary of the Invention

[0004] Therefore, it is necessary to address the issue that the performance of existing camera module motors is affected by the ball assembly precision, and to provide a motor component and a method for manufacturing the camera module motor component.

[0005] On one hand, this application provides a motor component, including: a retaining assembly, the retaining assembly including a first retaining member and a second retaining member, the first retaining member being stacked on top of the second retaining member and forming at least one retaining space between the first retaining member and the second retaining member, at least one of the first retaining member and the second retaining member having an opening communicating with the retaining space; an injection molded part, the injection molded part being injection molded outside the retaining assembly; and at least one ball, the ball being movably disposed in the retaining space, the ball being at least partially exposed outside the opening.

[0006] In one embodiment, the first retainer and the second retainer are stretched in opposite directions to form a first ball groove and a second ball groove on the first retainer and the second retainer, respectively, the first ball groove and the second ball groove combining to form the retaining space.

[0007] In one embodiment, one of the first retainer and the second retainer is stretched away from the other to form a first ball groove on the first retainer or a second ball groove on the second retainer, wherein the first ball groove and the second retainer are combined to form the retaining space, or the second ball groove and the first retainer are combined to form the retaining space.

[0008] In one embodiment, the bottom of the first ball groove and / or the second ball groove is provided with the opening, the diameter of the opening is smaller than the maximum diameter of the ball, and a loose fit gap is provided between the ball and the opening.

[0009] In one embodiment, the first retainer includes at least two first positioning portions and a first connecting portion respectively connected to the two first positioning portions; the second retainer includes at least two second positioning portions and a second connecting portion respectively connected to the two second positioning portions, wherein the first positioning portions are fixed to the second positioning portions to cooperate in forming the retaining space.

[0010] In one embodiment, the two first positioning portions and the first connecting portion are not on the same plane.

[0011] In one embodiment, the first retainer further includes an extension extending outward from the two first positioning portions.

[0012] In one embodiment, both the first connecting portion and the extension portion have perforated holes.

[0013] On the other hand, this application also provides a method for manufacturing a camera module motor component, used to prepare a motor component as described above, comprising the following steps:

[0014] The balls are loaded into the ball grooves on the second retainer of the second strip, the second strip including a second auxiliary strip and a plurality of second retainers connected to the second auxiliary strip;

[0015] The second retainer is fixed to the first retainer of the first material strip to form a retaining space between the first retainer and the second retainer. The ball is movably disposed in the retaining space. The first material strip includes a first auxiliary material strip and a plurality of first retainers connected to the first auxiliary material strip.

[0016] By injection molding, injection molding material is used to surround the first retainer and the second retainer to form a plurality of motor components; and

[0017] By cutting and removing excess material, multiple motor components are obtained.

[0018] In one embodiment, the method for manufacturing the camera module motor component further includes the step of preparing a first material strip and a second material strip before the step of loading the ball into the ball groove on the second retainer of the second material strip;

[0019] The steps for preparing the first and second strips include:

[0020] The first auxiliary material strip and the first retainer are formed by stamping. The first retainer includes at least two first positioning parts and a first connecting part connected to the two first positioning parts respectively. The first connecting part is connected to the first auxiliary material strip.

[0021] The connection between the first positioning part and the first connecting part of the first retainer is bent so that the first positioning part and the first connecting part are not on the same plane;

[0022] The second auxiliary strip and the second retainer are formed by stamping. The second retainer includes at least two second positioning portions and second connecting portions respectively connected to the second auxiliary strip and the second positioning portions; and

[0023] By stretching and punching, ball grooves and openings are formed on the second retainer, the ball grooves being used to accommodate the balls.

[0024] In one embodiment, the step of loading the balls into the ball grooves on the second retainer of the second strip includes:

[0025] The ball bearings are separated and arranged in the preparation area using a vibratory feeder; and

[0026] The robotic arm uses its suction nozzle to pick up the balls from the preparation area and loads them into the ball groove.

[0027] In one embodiment, the step of loading the balls into the ball grooves on the second retainer of the second strip includes:

[0028] The ball bearings are installed into a device equipped with a nozzle;

[0029] Through the nozzle, ball bearings are continuously sprayed onto the material preparation area; and

[0030] The robotic arm picks up the balls from the preparation area and inserts them into the ball groove.

[0031] In one embodiment, the step of fixing the second retainer to the first retainer of the first strip to form a retaining space between the first retainer and the second retainer includes:

[0032] Positioning holes are respectively made on the first auxiliary material strip and the second auxiliary material strip;

[0033] The first strip and the second strip are stacked through the positioning hole, so that the first retainer and the second retainer are aligned, and the first positioning part and the second positioning part are aligned.

[0034] Welding the first positioning part and the second positioning part; and

[0035] Cut off the second connecting part, separate the second auxiliary tape and the second retainer, and remove the second auxiliary tape.

[0036] In one embodiment, during the step of welding the first positioning part and the second positioning part, visual inspection is used to automatically detect whether there is any missing welding in the first positioning part and the second positioning part.

[0037] In one embodiment, the step of forming a plurality of motor components by injection molding, by surrounding the first retainer and the second retainer with injection material, may include:

[0038] The first strip is fixed by an injection mold, the injection mold having an independent cavity corresponding to the ball;

[0039] Controlling the injection pressure and using negative pressure to cause the independent cavities to hold the balls; and

[0040] The injection material is injected into the injection mold by tape injection molding to form a plurality of motor components.

[0041] In summary, the motor component of this application, by injection molding the injection part outside the retaining assembly, enables the retaining assembly to be embedded in the motor component. The retaining space is defined by the first and second retaining members of the retaining assembly. By movably setting the ball in the retaining space before injection molding, the ball is also embedded in the motor component along with the retaining assembly, thereby eliminating the ball assembly step, improving the ball's accuracy, and improving the performance of the camera module motor.

[0042] The method for manufacturing the camera module motor component of this application involves injection molding in which the retaining component is held on the material strip. By inserting the ball into the ball groove of the second retainer before injection molding and fixing the second retainer to the first retainer, the ball is movably positioned in the retaining space before injection molding of the motor component. This achieves a structure in which the ball is embedded in the motor component through the first and second retainers. This not only eliminates the ball assembly step and improves production efficiency, but also improves the ball accuracy, thereby enhancing the performance of the camera module. Attached Figure Description

[0043] Figure 1 A perspective view of a motor component provided for one embodiment of this application;

[0044] Figure 2 A perspective view of the first strip of the motor component according to the above embodiment of this application is shown;

[0045] Figure 3 A perspective view of the second strip of the motor component according to the above embodiment of this application is shown;

[0046] Figure 4 A cross-sectional schematic diagram is shown as an example of a retaining space for a motor component according to the above embodiments of this application;

[0047] Figure 5 A cross-sectional schematic diagram is shown as another example of the retaining space of the motor component according to the above embodiments of this application;

[0048] Figure 6 A schematic diagram of the steps in a method for manufacturing a camera module motor component is provided for one embodiment of this application;

[0049] Figure 7 A step-by-step schematic diagram of step S100 of the camera module motor component manufacturing method according to the above embodiments of this application is shown;

[0050] Figure 8 A schematic diagram of a set of steps in the camera module motor component manufacturing method according to the above embodiments of this application is shown.

[0051] Figure 9 A schematic diagram of another component step of the camera module motor component manufacturing method according to the above embodiments of this application is shown.

[0052] Figure 10 A schematic diagram of step S300 of the camera module motor component manufacturing method according to the above embodiment of this application is shown;

[0053] Figure 11A schematic diagram of step S400 of the camera module motor component manufacturing method according to the above embodiment of this application is shown.

[0054] Reference numerals: 10, first strip; 11, first retainer; 111, first ball groove; 112, first positioning part; 113, first connecting part; 114, extension part; 115, cutout hole; 12, first auxiliary strip; 121, positioning hole; 20, second strip; 21, second retainer; 211, second ball groove; 212, second positioning part; 213, second connecting part; 22, second auxiliary strip; 30, retaining space; 31, opening; 40, ball; 50, injection molded part. Detailed Implementation

[0055] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0056] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0059] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0061] In view of the current problem that the performance of existing camera module motors is affected by the ball assembly accuracy, this application provides a motor component and a method for manufacturing the motor component of a camera module. This motor component integrates the ball bearings into an injection-molded part, which simplifies the assembly process of the motor component, reduces costs and increases efficiency, and improves the relative positional accuracy of the ball bearings in the motor component.

[0062] On the one hand, please refer to Figure 1 , Figure 2 and Figure 3This application provides a motor component that may include a retaining assembly, an injection-molded part 50, and at least one ball 40. The retaining assembly may include a first retainer 11 and a second retainer 21, with the first retainer 11 stacked on top of the second retainer 21, forming at least one retaining space 30 between the first retainer 11 and the second retainer 21. At least one of the first retainer 11 and the second retainer 21 has an opening 31 communicating with the retaining space 30. The injection-molded part 50 is injection-molded outside the retaining assembly. The ball 40 is movably disposed in the retaining space 30, with at least a portion of the ball 40 exposed outside the opening 31. The ball 40 can be used to form movable contact with other motor components of a camera module motor. When the ball 40 rolls, it enables the motor component to be movably connected to other motor components, thereby allowing the motor component to move relative to the other motor components.

[0063] It is understandable that by injection molding the injection part 50 outside the retaining assembly, the motor component can be embedded in the retaining assembly. The retaining space 30 is defined by the first retaining member 11 and the second retaining member 21 of the retaining assembly. By movably setting the ball 40 in the retaining space 30 before injection molding, the ball 40 is also embedded in the motor component along with the retaining assembly, thereby eliminating the assembly step of the ball 40, improving the accuracy of the ball 40, and helping to improve the performance of the camera module motor.

[0064] Optionally, in some embodiments, the motor component can be the stator of a camera module motor, with other motor devices acting as movers and cooperating with the motor component. Alternatively, the motor component can be the rotor of a camera module motor, with other motor devices acting as stators and cooperating with the motor component. Specifically, this can manifest as the motor component being a movable carrier, with other motor devices acting as a motor base, or the motor component being a base, with other motor devices acting as a movable carrier.

[0065] Optionally, such as Figure 4 As shown, in some embodiments, the first retainer 11 and the second retainer 21 are stretched in opposite directions to form a first ball groove 111 and a second ball groove 211, respectively. The first ball groove 111 and the second ball groove 211 combine to form a retaining space 30. In other words, the first retainer 11 and the second retainer 21 are formed by stretching to form the first ball groove 111 and the second ball groove 211. After the first retainer 11 and the second retainer 21 are combined, the first ball groove 111 and the second ball groove 211 can cooperate to form the retaining space 30. In this way, by forming the retaining space 30 by combining two ball grooves, the stretching distance required to form a single ball groove can be reduced, and the deformation of the first retainer 11 and the second retainer 21 is less, thereby enhancing the structural strength of the first retainer 11 and the second retainer 21.

[0066] Optionally, such as Figure 5 As shown, in some embodiments, one of the first retainer 11 and the second retainer 21 is stretched away from the other to form a first ball groove 111 on the first retainer 11 or a second ball groove 211 on the second retainer 21. The first ball groove 111 and the second retainer 21 combine to form a retaining space 30, or the second ball groove 211 and the first retainer 11 combine to form a retaining space 30. In other words, one of the first retainer 11 and the second retainer 21 is stretched to form a ball groove, and the ball groove cooperates with the other of the first retainer 11 and the second retainer 21 to form a retaining space 30. In this way, the retaining space 30 can be formed on the first retainer 11 and the second retainer 21 by stretching and machining only one ball groove, which can reduce the number of machining steps.

[0067] Optionally, such as Figure 4 and Figure 5 As shown, in some embodiments, the bottom of the first ball groove 111 and / or the second ball groove 211 is provided with an opening 31, the diameter of the opening 31 is smaller than the maximum diameter of the ball 40, and a loose fit gap is provided between the ball 40 and the opening 31. In other words, when the first retainer 11 is provided with a first ball groove 111 and the second retainer 21 is not provided with a second ball groove 211, the opening 31 is opened at the bottom of the first ball groove 111; when the second retainer 21 is provided with a second ball groove 211 and the first retainer 11 is not provided with a first ball groove 111, the opening 31 is opened at the bottom of the second ball groove 211; when the first retainer 11 and the second retainer 21 are respectively provided with a first ball groove 111 and a second ball groove 211, the opening 31 can be opened at the bottom of the first ball groove 111, or at the bottom of the second ball groove 211, or simultaneously at the bottom of both the first ball groove 111 and the second ball groove 211.

[0068] When the ball 40 is inserted into the retaining space 30, since the diameter of the opening 31 is smaller than the maximum diameter of the ball 40, the ball 40 is confined in the retaining space 30 and will not come out of the retaining space 30. The ball 40 can move by setting a loose fit gap between the opening 31 and the ball 40.

[0069] It is worth noting that the surfaces of the first retainer 11 and the second retainer 21 that contact the ball 40 are both metal surfaces. This increases the hardness of the first retainer 11 and the second retainer 21, making them less prone to pitting and thus improving their durability.

[0070] Optionally, such as Figure 2 and Figure 3As shown, in some embodiments, the first retainer 11 includes at least two first positioning portions 112 and first connecting portions 113 respectively connected to the two first positioning portions 112. The second retainer 21 includes at least two second positioning portions 212 and second connecting portions 213 respectively connected to the two second positioning portions 212. The first connecting portions 113 and the second connecting portions 213 can also be used to connect auxiliary material tapes to achieve pull-type injection molding. The first positioning portions 112 are fixed to the second positioning portions 212 to form a retaining space 30. By fixing the first positioning portions 112 and the second positioning portions 212 together, the first positioning portions 112 and the second positioning portions 212 form a combined structure, which not only enhances the structural strength of the retaining assembly and the overall structural strength of the motor component, but also ensures that the ball 40 does not detach from the retaining space 30 during injection molding, improving the assembly accuracy of the ball 40. In addition, the positioning portions have continuous surfaces, which can isolate the ball 40 from the injection molding material.

[0071] Optionally, such as Figure 2 As shown, in some embodiments, the two first positioning portions 112 and the first connecting portion 113 are not on the same plane. By bending them relative to each other, the first positioning portions 112 and the first connecting portion 113 can be made to be on different planes. In this way, the bent first positioning portions 112 and the first connecting portion 113 present a three-dimensional structure, which has stronger resistance to deformation and can improve the overall structural strength of the motor components.

[0072] Optionally, such as Figure 2 As shown, in some embodiments, the first retainer 11 further includes an extension 114 extending outward from the two first positioning portions 112. Thus, by adding this extension 114, the first retainer 11 can serve as an intermediate support for the motor component, enhancing the overall structural strength of the motor component. The shape of the extension 114 can be determined according to the shape of the motor component.

[0073] Optionally, such as Figure 2 As shown, in some embodiments, both the connecting portion and the extension portion 114 are provided with a hollow hole 115, which can be used to fill the injection molding material during injection molding so that the injection molding material fully covers the first retainer 11.

[0074] On the other hand, such as Figure 6 As shown, this application also provides a method for manufacturing a camera module motor component, used to prepare a motor component as described above. This method for manufacturing a camera module motor component may include the following steps:

[0075] S200: The balls are loaded into the ball grooves on the second retainer of the second strip, the second strip including a second auxiliary strip and a plurality of second retainers connected to the second auxiliary strip;

[0076] S300, the second retainer is fixed to the first retainer of the first material strip to form a retaining space between the first retainer and the second retainer, the ball is movably disposed in the retaining space, and the first material strip includes a first auxiliary material strip and a plurality of first retainers connected to the first auxiliary material strip;

[0077] S400, By injection molding, injection molding material is used to surround the first retainer and the second retainer to form a plurality of motor components; and

[0078] S500: By cutting and removing excess material strips, multiple motor components are obtained.

[0079] It is understandable that the above-mentioned method for manufacturing the camera module motor component adopts injection molding in the form of holding the retaining component on the material strip. By inserting the ball 40 into the ball groove of the second retainer 21 before injection molding and fixing the second retainer 21 to the first retainer 11, the ball 40 is movably set in the retaining space 30 before the motor component is injection molded. This achieves a structure in which the ball 40 is embedded in the motor component through the first retainer 11 and the second retainer 21. This not only eliminates the assembly step of the ball 40 and improves production efficiency, but also improves the accuracy of the ball 40, thereby improving the performance of the camera module.

[0080] Optionally, such as Figure 6 and Figure 7 As shown, in some embodiments, the camera module motor component manufacturing method further includes the step of: S100, preparing the first and second strips, before the step of loading the balls into the ball grooves on the second retainer of the second strip;

[0081] The steps for preparing the first and second strips include:

[0082] S110. The first auxiliary material strip and the first retainer are formed by stamping. The first retainer includes at least two first positioning parts and a first connecting part connected to the two first positioning parts respectively. The first connecting part is connected to the first auxiliary material strip.

[0083] S120. Bend the connection between the first positioning part and the first connecting part of the first retainer so that the first positioning part and the first connecting part are not on the same plane;

[0084] S130. The second auxiliary strip and the second retainer are formed by stamping. The second retainer includes at least two second positioning portions and second connecting portions respectively connected to the second auxiliary strip and the second positioning portions; and

[0085] S140. By stretching and punching, a ball groove and an opening are formed on the second retainer, the ball groove being used to accommodate the ball.

[0086] Thus, by referring to the above steps, by preparing the first material strip 10 and the second material strip 20 in advance, a ball groove and an opening 31 are formed on the second positioning part 212, so that the first positioning part 112 of the first retaining member 11 can cooperate with the ball groove and the opening 31 of the second positioning part 212 to define a retaining space 30 for loading the ball 40 between the first retaining member 11 and the second retaining member 21.

[0087] It is worth noting that the punching shape accuracy of the first retainer 11 and the second retainer 21 must meet ±0.005mm, and the limit punching dimensions of the first strip 10 and the second strip are within the material thickness range of 0.05mm to 0.2mm, so as to ensure that the accuracy of the first retainer 11 and the second retainer 21 meets the accuracy requirements of the ball bearing 40.

[0088] Optionally, such as Figure 8 As shown, in some embodiments, the step of loading the balls into the ball grooves on the second retainer of the second strip includes:

[0089] S210. Material is prepared using a vibratory feeder, the balls are separated, and the balls are arranged in the material preparation area; and

[0090] S220. The ball bearing is picked up from the material preparation area by the suction nozzle of the robotic arm and placed into the ball bearing groove.

[0091] Before inserting the ball bearings 40 into the ball bearing 40 slot, the ball bearings 40 need to be prepared. Following the steps described above, the vibratory feeder can efficiently and continuously separate and arrange the ball bearings 40 to the preparation area. Subsequently, the ball bearings 40 are picked up by the suction nozzle of the robotic arm, which can realize the automated feeding and insertion of the ball bearings 40, which can not only improve production efficiency but also reduce labor costs.

[0092] Optionally, such as Figure 9 As shown, in some embodiments, the step of loading the balls into the ball grooves on the second retainer of the second strip includes:

[0093] S230. The ball bearing is installed into a device with a nozzle;

[0094] S240. Continuously spray ball bearings towards the material preparation area through the nozzle; and

[0095] S250. Using a robotic arm, the ball bearing is picked up from the material preparation area and placed into the ball bearing groove.

[0096] In addition to using a vibratory feeder to prepare the ball bearings 40, a device with a nozzle can also be used to prepare the ball bearings 40. Following the steps above, the ball bearings 40 are first loaded into the device with the nozzle, and the nozzle continuously sprays the ball bearings 40 into the preparation area. Then, a robotic arm picks up the ball bearings 40 and loads them into the ball bearing 40 slot. This also achieves automated feeding and loading of the ball bearings 40, which has high production efficiency and low labor costs.

[0097] Because there is a risk of the ball bearing 40 falling out during the process of the robotic arm's suction nozzle picking up the ball bearing 40, in some embodiments, during the step of picking up the ball bearing 40 from the preparation area using the robotic arm's suction nozzle and placing the ball bearing 40 into the ball bearing 40 slot, a pneumatic pressure monitoring device monitors the negative pressure value of the suction nozzle. By monitoring the negative pressure value of the suction nozzle in real time during the picking process, it is determined whether the suction nozzle is adsorbed with the ball bearing 40. If there is negative pressure in the suction nozzle, it means that the suction nozzle has adsorbed the ball bearing 40; if there is no negative pressure in the suction nozzle, it means that the suction nozzle has not adsorbed the ball bearing 40. In this way, it is possible to monitor whether the suction nozzle is adsorbed with the ball bearing 40 in real time, preventing the risk of material leakage.

[0098] Furthermore, whether the ball 40 is picked up by the suction nozzle of the robotic arm or picked up by the robotic arm, there are potential risks such as failure to pick up / pick up the ball 40, omission of the ball 40, or overfilling of the ball 40. Therefore, in some embodiments, the step of loading the ball 40 into the ball groove on the second retainer 21 of the second material strip 20 further includes: automatically detecting whether the ball 40 is picked up / picked up, whether the ball 40 is missed, or whether the ball 40 is overfilled by AOI vision inspection. In this way, by using vision inspection, closed-loop control of the entire process can be achieved, and the problems of material dropping, omission of the ball 40, and overfilling of the ball 40 can be completely solved when loading the ball 40.

[0099] Optionally, such as Figure 10 As shown, in some embodiments, the step of fixing the second retainer to the first retainer of the first strip to form a retaining space between the first retainer and the second retainer includes:

[0100] S310. Positioning holes are respectively made on the first auxiliary material strip and the second auxiliary material strip;

[0101] S320. The first strip and the second strip are stacked through the positioning hole so that the first retainer and the second retainer are aligned, and the first positioning part and the second positioning part are aligned.

[0102] S330, welding the first positioning part and the second positioning part; and

[0103] S340. Cut off the second connecting part, separate the second auxiliary tape and the second retainer, and remove the second auxiliary tape.

[0104] The holding space 30 formed by the first retainer 11 and the second retainer 21 has a certain impact on the accuracy of the ball 40. In order to ensure the accuracy of the ball 40, referring to the above steps, positioning holes 121 can be opened on the first auxiliary material belt 12 and the second auxiliary material belt 22 respectively. The positioning holes 121 are used to accurately position the first positioning part 112 and the second positioning part 212, so that the first positioning part 112 and the second positioning part 212 have high positional accuracy, which can improve the accuracy of the ball 40.

[0105] Specifically, during welding, the relative positional accuracy of the first strip 10 and the second strip is controlled within the range of ±0.01mm, and the welding strength of the first positioning part 112 and the second positioning part 212 must meet the requirement of greater than 20N.

[0106] Optionally, in some embodiments, nanosecond laser welding is used to weld the first retainer 11 and the second retainer 21. The core advantage of nanosecond laser welding is that it has a small heat effect and ultra-high precision, which can ensure the high positional accuracy of the first retainer 11 and the second retainer 21.

[0107] During the welding process of the first positioning part 112 and the second positioning part 212, problems such as incomplete welding, empty welding, or cold welding are unavoidable. Therefore, in some embodiments, during the welding step of the first positioning part 112 and the second positioning part 212, visual inspection is used to automatically detect whether there is incomplete welding in the first positioning part 112 and the second positioning part 212. In addition, a weld strength pull-out test can be performed on the first positioning part 112 and the second positioning part 212 before injection molding to confirm whether there are any problems with empty welding or cold welding.

[0108] Furthermore, after the first positioning part 112 and the second positioning part 212 are welded, the rolling of the ball 40 can be tested to ensure that the ball 40 moves smoothly.

[0109] Optionally, such as Figure 11 As shown, in some embodiments, the step of forming a plurality of motor components by injection molding, by molding injection material around the first retainer and the second retainer, may include:

[0110] S410. The first strip 10 is fixed by an injection mold, wherein the injection mold has an independent cavity corresponding to the ball 40.

[0111] S420, Control the injection pressure, and use negative pressure to cause the independent cavity to adsorb the ball bearing 40; and

[0112] S430. The injection material is injected into the injection mold by a pull-type injection molding process to form a plurality of motor components.

[0113] During injection molding, it is necessary to prevent injection material from entering the holding space 30 through the opening 31 and causing blockage of the ball bearing 40. Referring to the above steps, the injection mold can clamp the first material strip 10 through the positioning mechanism, so that the area where the ball bearing 40 is located is completely exposed and does not come into contact with the injection material, ensuring smooth rolling of the ball bearing 40. In addition, using the negative pressure of the independent cavity to adsorb the ball bearing 40 can increase the number of fixing points and ensure that the injection mold can further fix the first material strip 10.

[0114] Specifically, in the step of controlling the injection pressure and using negative pressure to adsorb the ball 40 in the independent cavity, the injection pressure can be 150 MPa.

[0115] Furthermore, to make the ball 40 roll more smoothly, grease can be added into the retaining space 30. The grease can be added together with the ball 40 before fixing the first retainer 11 and the second retainer 21, or it can be added after the motor components are formed.

[0116] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0117] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A motor component, characterized in that, include: A retaining assembly, the retaining assembly including a first retaining member and a second retaining member, the first retaining member being stacked on the second retaining member and forming at least one retaining space between the first retaining member and the second retaining member, and at least one of the first retaining member and the second retaining member having an opening communicating with the retaining space; The injection molded part is formed outside the retaining assembly by injection molding; as well as At least one ball bearing is movably disposed in the retaining space, and the ball bearing is at least partially exposed outside the opening; The first retaining member includes at least two first positioning portions and a first connecting portion respectively connected to the two first positioning portions; the second retaining member includes at least two second positioning portions and a second connecting portion respectively connected to the two second positioning portions, wherein the first positioning portions are fixed to the second positioning portions to cooperate in forming the retaining space.

2. The motor component according to claim 1, characterized in that, The first retainer and the second retainer are stretched in opposite directions to form a first ball groove and a second ball groove on the first retainer and the second retainer, respectively. The first ball groove and the second ball groove combine to form the retaining space.

3. The motor component according to claim 1, characterized in that, One of the first retainer and the second retainer is stretched away from the other to form a first ball groove in the first retainer or a second ball groove in the second retainer, wherein the first ball groove and the second retainer are combined to form the retaining space, or the second ball groove and the first retainer are combined to form the retaining space.

4. The motor component according to any one of claim 2 or claim 3, characterized in that, The bottom of the first ball groove and / or the second ball groove is provided with the opening, the diameter of the opening is smaller than the maximum diameter of the ball, and a loose fit gap is provided between the ball and the opening.

5. The motor component according to any one of claims 1 to 3, characterized in that, The two first positioning parts and the first connecting part are not on the same plane.

6. The motor component according to any one of claims 1 to 3, characterized in that, The first retainer also includes an extension extending outward from the two first positioning portions.

7. The motor component according to claim 6, characterized in that, Both the first connecting part and the extension part have hollow holes.

8. A method for manufacturing a camera module motor component, used to prepare the motor component as described in any one of claims 1 to 7, characterized in that, Includes the following steps: The balls are loaded into the ball grooves on the second retainer of the second strip, the second strip including a second auxiliary strip and a plurality of second retainers connected to the second auxiliary strip; The second retainer is fixed to the first retainer of the first material strip to form a retaining space between the first retainer and the second retainer. The ball is movably disposed in the retaining space. The first material strip includes a first auxiliary material strip and a plurality of first retainers connected to the first auxiliary material strip. By injection molding, injection molding material is used to surround the first retainer and the second retainer to form a plurality of motor components; as well as By cutting and removing excess material, multiple motor components are obtained.

9. The method for manufacturing a camera module motor component according to claim 8, characterized in that, The method for manufacturing the camera module motor component further includes the following step before the step of inserting the balls into the ball grooves on the second retainer of the second strip: Prepare the first and second strips; The steps for preparing the first and second strips include: The first auxiliary material strip and the first retainer are formed by stamping. The first retainer includes at least two first positioning parts and a first connecting part connected to the two first positioning parts respectively. The first connecting part is connected to the first auxiliary material strip. The connection between the first positioning part and the first connecting part of the first retainer is bent so that the first positioning part and the first connecting part are not on the same plane; The second auxiliary strip and the second retainer are formed by stamping. The second retainer includes at least two second positioning portions and second connecting portions respectively connected to the second auxiliary strip and the second positioning portions; and By stretching and punching, ball grooves and openings are formed on the second retainer, the ball grooves being used to accommodate the balls.

10. The method for manufacturing a camera module motor component according to claim 8, characterized in that, The step of loading the balls into the ball grooves on the second retainer of the second strip includes: The ball bearings are separated and arranged in the preparation area using a vibratory feeder; and The robotic arm uses its suction nozzle to pick up the balls from the preparation area and loads them into the ball groove.

11. The method for manufacturing a camera module motor component according to claim 8, characterized in that, The step of loading the balls into the ball grooves on the second retainer of the second strip includes: The ball bearings are installed into a device equipped with a nozzle; Through the nozzle, ball bearings are continuously sprayed onto the material preparation area; and The robotic arm picks up the balls from the preparation area and inserts them into the ball groove.

12. The method for manufacturing a camera module motor component according to claim 9, characterized in that, The step of fixing the second retainer to the first retainer of the first strip to form a retaining space between the first retainer and the second retainer includes: Positioning holes are respectively made on the first auxiliary material strip and the second auxiliary material strip; The first strip and the second strip are stacked through the positioning hole, so that the first retainer and the second retainer are aligned, and the first positioning part and the second positioning part are aligned. Welding the first positioning part and the second positioning part; and Cut off the second connecting part, separate the second auxiliary tape and the second retainer, and remove the second auxiliary tape.

13. The method for manufacturing a camera module motor component according to claim 12, characterized in that, In the step of welding the first positioning part and the second positioning part, visual inspection is used to automatically detect whether there is any missing welding in the first positioning part and the second positioning part.

14. The method for manufacturing a camera module motor component according to claim 8, characterized in that, The step of forming a plurality of motor components by injection molding, by surrounding the first retainer and the second retainer with injection material, may include: The first strip is fixed by an injection mold, the injection mold having an independent cavity corresponding to the ball; Controlling the injection pressure and using negative pressure to cause the independent cavities to hold the balls; and The injection material is injected into the injection mold by tape injection molding to form a plurality of motor components.

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