Base and motor with integrated coils

Abstract

The present invention provides a coil-integrated base and a motor, the coil-integrated base comprising an insulating base, a metal circuit, and a coil electrically connected to the metal circuit, the coil comprising a starting lead wire, a terminal lead wire, and a coil body connected between the starting lead wire and the terminal lead wire, the insulating base being provided with an accommodation groove for accommodating the starting lead wire, the accommodation groove extending from a winding start position of the coil body. In the coil-integrated base of the present invention, because the insulating base is provided with an accommodation groove for accommodating the starting lead wire, even if the starting lead wire is provided at the bottom of the coil body, the starting lead wire does not affect the stability of the coil body, and the coil body is less likely to wobble.

Description

[Technical Field]

[0001] This application claims priority to a Chinese patent application filed on July 14, 2022, with application number 202210824029.6, entitled "Coil-integrated base and motor," and a Chinese patent application filed on April 1, 2022, with application number 202220756651.3, entitled "Motor base," the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to the technical field of coil-integrated bases and motors, and more particularly to coil-integrated bases and motors for use in the field of electronic equipment. [Background technology]

[0003] Camera modules are an important component of electronic devices with imaging capabilities, such as mobile phones and tablets. In conventional technology, in order to reduce the overall size of a camera module, a coil is provided on the motor base, and a current is passed through the coil to generate driving torque, which is then used in conjunction with a magnet to generate a magnetic field around the coil.

[0004] Conventional coil-equipped motors and bases typically include a base, metal wiring injection-molded into the base, electronic components welded to the metal wiring, a coil attached to the base, and driving components such as a magnetic structure interacting with the coil. Motor assemblers typically need to electrically assemble the above basic components, for example, by positioning two leads of a wound coil on the fillets of corresponding branches of the corresponding metal wiring and performing position welding. The coil attached to the base is typically an air-core coil or a field-wound coil, and requires one leading end wire extending from the winding start position to connect to the circuit and one terminating end wire extending from the winding end position to connect to the circuit. In actual coil production, the coil is wound from bottom to top and from inside to outside, i.e., the leading end wire of the coil is located closer to the inside of the bottom layer of the coil, and the terminating end wire of the coil is located closer to the outside of the top layer of the coil. The two leads of the coil have different weld distances between them and the fillets of the branches that are in the same horizontal plane due to the difference in relative height between them.

[0005] In addition, since coils are generally wound layer by layer, starting from the bottom layer and working upward, the starting lead wire is located below the bottom layer of the coil, and when the coil is placed on the motor base, the coil becomes prone to wobbling, causing instability, which is detrimental to stable connection between the coil and the circuit.

[0006] As disclosed in the invention patent application with publication number CN113193723A, four first coils are provided on the base, and the first coils are connected to the conductor via connecting parts for electrical conduction, and the second coils are connected to the first coils for electrical conduction. Two lead wires of the first coils and fillets of the conductor corresponding to the two lead wires are welded to two fillets of the conductor that are the same height in the vertical direction.

[0007] In addition, as disclosed in the invention patent application with publication number CN110098710A, coils are welded to both sides of the base, and the two coils are electrically connected to terminals on the base. The terminals have a three-stage structure, with one semicircular arc serving as the conductive medium for the two coils, and the remaining two stages connecting the coils and the positive and negative poles of the power supply. This patent application only has two coils, which only achieves vertical focusing of the motor product and is not very effective in preventing runout. Furthermore, the two coils are installed vertically, and the two lead wires of each coil are welded to a pair of horizontally installed fillets of the same height on the terminals.

[0008] Both of the above-mentioned prior arts disclose that the coil lead wires are welded to two spaced fillets on the same horizontal plane. Neither of these prior arts addresses the issue of differences in the welding distances between the lead wires of a wire-wound coil due to differences in the height of the lead wires in the coil thickness direction. The difference in welding distance between the lead wires and the fillets inevitably results in the welding distance of the higher terminal lead wire being too long, which can lead to unreliable welding and even breakage, affecting product performance and lifespan. A too long welding distance also reduces the coil signal quality and impacts the motor's motion accuracy. Meanwhile, the lower starting lead wire is located at the bottom layer of the coil and spans both the inner and outer layers. Therefore, when the coil is set, its bottom surface may tilt relative to the contact surface of the base, causing the coil to wobble. To prevent this, the coil bottom must usually be sized. However, this sizing can create a step, which can easily cause the starting lead wire to break during welding, affecting the product's lifespan and performance.

[0009] Therefore, there is certainly a need to provide a new coil-integrated base and motor to overcome the above-mentioned drawbacks. Summary of the Invention

[0010] The object of the present invention is to provide a base and motor with an integrated coil, in which the base is provided with an accommodation groove for accommodating the starting lead wire of the coil, and the accommodation groove extends from the winding start position of the coil body, thereby solving the problem of the starting lead wire of the coil being located below the bottom layer of the coil, causing the coil to wobble and become unstable.

[0011] The object of the present invention is to This is achieved by technical solution 1, which comprises an insulating base, a metal circuit embedded in the insulating base, and a coil fixed to the insulating base and electrically connected to the metal circuit, the coil comprising a starting lead wire, a terminal lead wire, and a coil body connected between the starting lead wire and the terminal lead wire, wherein the insulating base has an accommodating groove for accommodating the starting lead wire, and the accommodating groove is a coil-integrated base extending from the winding start position of the coil body.

[0012] The object of the present invention is to This is achieved by technical solution 2, which is a motor comprising a base on which the above-mentioned coil is integrated, a casing located above the base on which the coil is integrated, and a movable module housed in the casing, wherein the movable module includes a magnetic element cooperating with the coil.

[0013] Compared to the prior art, the coil-integrated base of the present invention has an accommodating groove in the insulating base to accommodate the starting lead wire, and the accommodating groove extends from the winding start position of the coil body. Therefore, even if the starting lead wire is provided at the bottom of the lowest layer of the coil body, the coil body can still be stably attached to the insulating base. Therefore, the starting lead wire does not affect the stability of the coil body, and the coil body is less likely to wobble. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a schematic perspective view of a motor having a base on which coils are integrated according to an embodiment of the present invention; [Figure 2] 1 is a schematic perspective view of a wire-wound coil on a base on which coils are integrated according to an embodiment of the present invention; [Figure 3] FIG. 2 is a perspective view of a base on which a coil is integrated according to an embodiment of the present invention. [Figure 4] FIG. 10 is a perspective view of a base on which a coil is integrated according to an embodiment of the present invention, seen from another angle. [Figure 5] FIG. 2 is a plan view of a base on which a coil is integrated according to an embodiment of the present invention. [Figure 6] FIG. 4 is a partially exploded perspective view of the base on which the coils in FIG. 3 are integrated. [Figure 7] 7 is a further partially exploded perspective view of the base on which the coils are integrated in FIG. 6. FIG. [Figure 8] 8 is an exploded perspective view of the base on which the coils are integrated in FIG. 7, seen from another angle. [Figure 9] FIG. 2 is a perspective view of a metal circuit of a base with an integrated coil according to an embodiment of the present invention. [Figure 10] 8 is an enlarged perspective view of a portion of the insulating base enclosed by a circle C in FIG. 7. [Figure 11] 6 is a cross-sectional view of the base on which the coils are integrated taken along the direction AA in FIG. 5. [Figure 12] 12 is a partially cutaway cross-sectional view of the base on which the coils are integrated in FIG. 11. FIG. [Figure 13] 6 is a cross-sectional view taken along the BB direction of the base on which the coils are integrated in FIG. 5. FIG. [Figure 14] 14 is an enlarged, partially cutaway cross-sectional view of the base on which the coils are integrated in FIG. 13. FIG. [Figure 15] FIG. 10 is a schematic perspective view of a base on which coils are integrated according to another embodiment of the present invention, viewed from a certain angle. [Figure 16] FIG. 10 is a schematic perspective view of a base on which coils are integrated according to another embodiment of the present invention, viewed from another angle. [Figure 17] FIG. 10 is an exploded schematic view of an insulating base and a coil in a coil-integrated base according to another embodiment of the present invention. [Figure 18] FIG. 18 is a partially enlarged view of FIG. [Figure 19] FIG. 10 is an exploded schematic view of an insulating base, a coil, and a metal circuit in a coil-integrated base according to another embodiment of the present invention. [Figure 20] FIG. 10 is a bottom view of a base with integrated coils according to another embodiment of the present invention. [Figure 21] FIG. 21 is a cross-sectional view taken along dashed line AA in FIG. 20 in one embodiment. [Figure 22] FIG. 21 is a cross-sectional view taken along dashed line BB in FIG. 20 in one embodiment. [Figure 23] FIG. 23 is a partially enlarged view of FIG. 22. [Figure 24] FIG. 21 is a cross-sectional view taken along dashed line BB in FIG. 20 in another embodiment. [Figure 25] FIG. 21 is a cross-sectional view taken along dashed line AA in FIG. 20 in yet another embodiment. [Figure 26] FIG. 26 is a partially enlarged view of FIG. 25. DETAILED DESCRIPTION OF THE INVENTION

[0015] In describing this specification, the orientations or positional relationships indicated by terms such as "upper," "lower," "inner," and "outer" are based on the orientations or positional relationships shown in the drawings, and are intended solely for the purpose of clarifying and simplifying the description of this specification, and do not indicate or imply that the devices or components shown must have a particular orientation, be configured, or operate in a particular orientation, and therefore should not be construed as limitations of this specification.

[0016] In the description of the present invention, unless otherwise clearly specified or limited, the term "connection" should be understood in a broad sense, and a person skilled in the art can understand the specific meaning of the above term in the present invention depending on the situation.

[0017] The wire-wound coil 10 in the prior art and the present invention (the illustrations in this patent application are merely simplified drawings of the coil) is generally an air-core coil with one winding of wire, and includes a coil body (or main body portion) 105 and a cavity 1035 formed within the coil body 105. The start lead wire 101 at one end of the coil 10 is wound so as to form the innermost and bottommost coil layers, and then wound upward along the coil in a winding direction from the inside to the outside and from the bottom to the top. The lead wire is then wound outward to form an outer layer coil, and a terminal lead wire (or terminating lead wire) 102 is formed at the end of the lead wire, and the lead wire is pulled out from the innermost side of the bottom layer coil, extending from the bottom side of the coil 10 across the outer layer coil, and exposed at the outermost side of the bottom of the coil 10, i.e., the start lead wire 101 is located at the bottom in the thickness direction of the coil 10, forming a single layer. The lead wire is pulled out from the outermost coil, above the coil in the lowest single layer in the vertical direction perpendicular to the winding direction of the coil 10, i.e., above the lead wire of the start lead wire 101, and there is a difference in height between the start lead wire 101 and the terminating lead wire 102 in the vertical direction. The air-core coil referred to here is one that is attached to the device to which it is applied, such as a motor base, after it has been wound. Of course, in addition to being an air-core coil, this wound coil 10 may also be a coil that is wound on-site according to actual requirements, and for example, the coil 10 may be formed by winding it on-site directly onto the device to which it is applied, such as a motor base.

[0018] In the prior art, all of the coil lead wires in the base were welded to two spaced fillets in the same horizontal plane within the insulating base, and the problem of differences in welding distances when welding the lead wires due to differences in the vertical height (i.e., in the thickness direction of the coil 10) between the starting lead wire 101 and the ending lead wire 102 of the wound coil was not taken into consideration. In the present invention, the first connection pin (or fillet end) 11b and the second connection pin (or fillet end) 12b, which are at two different heights in the metal circuit 2, are electrically connected to the starting lead wire 101 and the ending lead wire 102 in the coil 10, respectively (in this embodiment, the optimal embodiment for the electrical connection is to use a welding method, but other contact-type electrical connections, such as nipping or adhesive bonding, may also be used). This reduces the inclination angle and extension length of the starting lead wire 101 and the ending lead wire 102, and further effectively improves the reliability of the electrical connection between the two starting lead wires 101 and the ending lead wire 102 of the coil 10 and the first and second connection pins 11b, 12b, enhances the signal transmission effect, and does not affect the product or its lifespan.

[0019] A base 100 according to one embodiment of the present invention and a motor 1000 having this base 100 will be described below with reference to FIGS.

[0020] The base 100 of the present invention can be applied to various motors, including, but not limited to, voice coil motors, linear motors, piezoelectric motors, and perimeter motors. The present invention will be described using a voice coil motor (VCM) 1000 as an example. VCM motors are important components for camera focus adjustment and vibration prevention. Mobile phone cameras often use a motor to achieve autofocus, adjusting the lens position to obtain clearer images. The motor 1000 includes a casing 1001, a magnetic element 104, a lens 103, a holder 106 for mounting the lens 103, and a base 100 integrating a coil 10 that interacts with the magnetic element 104. The magnetic element 104, the lens 103, and the holder 106 for mounting the lens 103 are referred to as a movable module. In the present invention, the coil 10 is integrated into the base 100, and the motor 1000 can move in various directions together with the movable module, thereby achieving various functions.

[0021] 3 to 8, one embodiment of the present invention relates to a base 100 applicable to the motor 1000 described in each of the above embodiments, and the base 100 is provided with an electronic element 20 having an induction function and a wire-wound coil 10 to match the focusing function and vibration prevention function of the motor 1000. The coil 10 can realize focusing drive or vibration prevention drive in cooperation with a corresponding magnetic element 104. The base 100 includes an insulating base (or plastic base) 1, a metal circuit 2 embedded in the insulating base 1, an electronic element 20 electrically connected to the metal circuit 2, and a magnetic element 104 electrically connected to the metal circuit 2. The insulating base 1 includes a wound coil 10 which is formed by a primary injection molding of a plastic positioning block 3 and a plastic body 4 which is secondary injection molded onto the plastic positioning block 3 and the metal circuit 2. In this embodiment, the electronic element 20 is a Hall sensor element or an integrated circuit (IC) in which a Hall element is integrated.

[0022] 3 to 8, plastic body 4 is injection molded from a plastic material and has opposing top and bottom surfaces 11 and 12, four side surfaces 13, a through hole 14 penetrating through top and bottom surfaces 11 and 12, and four corners 15. Through hole 14 forms an annular inner wall 141, and a mounting area (not referenced) where electronic elements 20 and coils 10 are mounted is defined between annular inner wall 141 and side surfaces 13. The mounting area is divided into four sub-mounting areas (not referenced) corresponding to the four side surfaces 13, and one coil 10 is positioned in each sub-mounting area and can be electrically connected to metal circuit 2.

[0023] The plastic body 4 has first grooves (or mounting portions) 16 recessed from the top surface 11 to correspond to the coils 10 mounted in each sub-mounting region. A protrusion 17 is formed between the adjacent first grooves 16 and the annular inner wall 141. On one side, the protrusions 17 correspond to the spacing between the side walls of the coils 10 on the outer wall, improving the stability when fixing the winding of the coils 10. On the other side, the protrusions 17 improve the overall strength of the plastic body 4.

[0024] To ensure accurate positioning of each coil 10, the plastic body 4 has at least two rectangular columnar positioning posts 18 spaced apart along the longitudinal direction of the side surface 13 within each first groove 16. The bottoms of the positioning posts 18 are fixed to the plastic body 4, and the tops are rounded and chamfered to facilitate installation of the coil 10. The top surfaces of the positioning posts 18 are vertically lower than the convex portion 17. The cavities 1035 of the coil 10 are fitted onto the positioning posts 18 to ensure accurate positioning relative to the plastic body 4. In the preferred embodiment of the present invention, three positioning posts 18 are provided, two of which are located at opposite ends of the winding direction of the coil 10, and the remaining one is located in the center of the inner region of the coil 10. The positioning post 18 located in the center of the inner region is longer than the other two positioning posts 18, and the center positioning post 18 is the longest, which can better support a wider area of the center of the coil 10 and is advantageous for stable setting of the coil 10.

[0025] 7 and 8, the metal circuit 2 includes a number of branches 21 arranged at intervals. Some of the branches 21 are electrically connected to the start lead wire 101 and the end lead wire 102 of the coil 10, and other parts of the branches 21 are electrically connected to welding pins (not shown) of the electronic elements 20. In this embodiment, four welding pins (not shown) are provided for each electronic element 20, and each electronic element 20 is individually electrically connected to four branches 21. Each coil 10 has a start lead wire 101 and a end lead wire 102, and each coil 10 must be electrically connected to two branches 21, respectively. One start lead wire 101 and one end lead wire 102 of one of two coils 10 can be connected in series to one common branch 21. Therefore, it is sufficient for three branches 21 to be electrically connected for every two coils 10.

[0026] In a specific embodiment of the present invention, the base 100 is provided with four coils 10, namely, a first coil 1031, a second coil 1032, a third coil 1033, and a fourth coil 1034. The first coil 1031 and the third coil 1033 are provided opposite each other in two sub-mounting regions and are connected in series with each other. The second coil 103 The second and fourth coils 1034 are disposed opposite each other in the two sub-mounting regions and are connected in series, and there are two electronic elements 20, namely, the first electronic element 201 and the second electronic element 202. According to the requirements for electrical connection between the coils 10 and the electronic elements 20 and the corresponding branches 21, in the most preferred embodiment of the present invention, the base 100 is provided with at least 14 branches 21 in total, of which four branches, namely, the first branch 211, the second branch 212, the third branch 213, and the fourth branch 214, are used to electrically connect with the first electronic element 201, and four branches, namely, the fifth branch 215, the sixth branch 216, the seventh branch 217, and the eighth branch 218, are used to electrically connect with the second electronic element 202. The six branches, namely the first coil branch 221b, the second coil branch 222c, the third coil branch 223b, the fourth coil branch 224c, the fifth coil branch 225h and the sixth coil branch 226h, are used to electrically connect with the four coils 10; specifically, the first coil branch 221b and the second coil branch 222c are used to electrically connect with the first coil 1031, the second coil branch 222c and the fifth coil branch 225h are used to electrically connect with the third coil 1033, the third coil branch 223b and the fourth coil branch 224c are used to electrically connect with the second coil 1032, and the fourth coil branch 224c and the sixth coil branch 226h are used to electrically connect with the fourth coil 1034. Among these, the second coil branch 222c is common to the first coil 1031 and the third coil 1033, and the fourth coil branch 224c is common to the second coil 1032 and the fourth coil 1034. By providing a common second coil branch 222c or fourth coil branch 224c between a pair of coils 10 so that they are connected in series with each other, the number of branches 21 can be reduced as much as possible compared to an arrangement in which two independent branches 21 are electrically connected for each coil 10, which is advantageous for reducing costs and making the base 100 smaller.

[0027] 7 to 9, one end of each branch 21 forms pins 1a that are arranged in parallel at a distance from each other and exposed outside the plastic body 4 of the insulating base 1, and the other end of each branch 21 forms connection pins (or welding pins) 1b that are injection molded into the insulating base 1 and exposed on the top surface 11 of the insulating base 1 for electrical connection with the coil 10 and the electronic element 20. The pins 1a of each branch 21 extend vertically and are distributed outside the two opposing side surfaces 13 of the plastic body 4, respectively, and a connection portion 1c is formed between the pin 1a of each branch 21 and the connection pin 1b. A portion of the connection portion 1c close to the connection pin 1b is bent to form a bent portion 1d, which is embedded in the plastic body 4. The connection portions 1c of all branches 21 are within the same first horizontal plane (not labeled). The plastic positioning block 3 is injection molded on the outer periphery of the connection pin 1b and exposes the connection surface of the connection pin 1b, and the plastic main body 4 forms a positioning hole to accommodate the plastic positioning block 3, the positioning hole including a first positioning hole 111 and a second positioning hole 112, and the top surface of the plastic positioning block 3 is exposed to the plastic main body 4.

[0028] Each of the four branches 21 electrically connected to each electronic element 20 has its bent portion 1d bent downward from the end of its connecting portion 1c so that all of the connection pins 1b are positioned within a second horizontal plane (not labeled). Because the second horizontal plane is lower than the first horizontal plane, the connection surfaces electrically connected to the connection pins 1b of the electronic element 20 are recessed, allowing the electronic element 20 to be accommodated within the thickness region of the insulating base 1. Specifically, the electronic element 20 is positioned within the cavity 1035 of the coil 10 and is offset from the coil body 105 of the coil 10 in the thickness direction of the coil 10. The electronic element 20 is exposed at the top surface of the first groove 16 of the plastic body 4, preventing damage during installation of the coil 10 or other components. The connection pins 1b of the four branches 21 electrically connected to each electronic element 20 are distributed parallel and opposite each other in pairs within the rectangular region to facilitate electrical connection with the four connection pins of the electronic element 20.

[0029] Referring to Figures 9 to 11, each of the bending portions 1d of the two branches 21 electrically connected to each coil 10 is bent upward from the end of the connection portion 1c so that the connection pin 1b is located in another plane higher than the first horizontal plane, and in the optimal embodiment, the connection surface of the first connection pin 11b of the connection pin 1b electrically connected to the starting lead wire 101 of the coil 10 is located in a third horizontal plane, and the connection surface of the second connection pin 12b of the connection pin 1b electrically connected to the ending lead wire 102 of the coil is located in a fourth horizontal plane, the third horizontal plane being vertically lower than the fourth horizontal plane, and both being higher than the first horizontal plane. In this embodiment, the first coil branch 221b has a first connection pin 11b, the second coil branch 222c has a second connection pin 12b, and the first connection pin 11b of the first coil branch 221b and the second connection pin 12b of the second coil branch 222c are used to electrically connect with the starting lead wire 101 and the ending lead wire 102 of the first coil 1031, respectively; the second coil branch 222c has a first connection pin 11b, and the fifth coil branch 225h has a second connection pin 12b, and the first connection pin 11b of the second coil branch 222c and the second connection pin 12b of the fifth coil branch 225h are used to electrically connect with the starting lead wire 101 and the ending lead wire 102 of the third coil 1033, respectively. The third coil branch 223b has a first connection pin 11b, the fourth coil branch 224c has a second connection pin 12b, the first connection pin 11b of the third coil branch 223b and the second connection pin 12b of the fourth coil branch 224c are used to electrically connect with the starting lead wire 101 and the ending lead wire 102 of the second coil 1032, respectively, the fourth coil branch 224c has a first connection pin 11b, the sixth coil branch 226h has a second connection pin 12b, and the first connection pin 11b of the fourth coil branch 224c and the second connection pin 12b of the sixth coil branch 226h are used to electrically connect with the starting lead wire 101 and the ending lead wire 102 of the fourth coil 1034, respectively.In this embodiment, the first connection pin 11b and the second connection pin 12b have a flat structure, and their connection surfaces have a horizontal plane shape, but of course, the first connection pin 11b and the second connection pin 12b may be provided with a convex hull structure or a concave structure, in which case their connection surfaces have an arc shape.

[0030] The connection pins 1b corresponding to the start lead wire 101 and the end lead wire 102 of each coil 10 are provided at opposite ends of the coil 10, respectively, and the line connecting them is parallel to the longitudinal direction of the side surface 13. Two connection pins 1b of the start lead wire 101 of one coil 10 and the end lead wire 102 of the other coil 10 of two adjacent coils 10 are adjacent to each other but spaced apart, and both are within the coil welding region (unnumbered) between two sub-mounting regions formed between the protrusion 17 and the corner 15.

[0031] 3 to 8 and 10 to 14, in order to accurately position the connection pins 1b and facilitate subsequent electrical connection between the connection pins 1b and the coils 10 and electronic elements 20, plastic positioning blocks 3 are molded around the outer peripheries of all of the connection pins 1b by primary injection molding before the metal circuit 2 is injection molded into the plastic body 4. In this embodiment, the plastic positioning blocks 3 include two types: a first plastic block 31 and a second plastic block 32. The first plastic block 31 is injection molded to position the first connection pins 11b and second connection pins 12b of two adjacent coils 10 and the four connection pins 1b of the adjacent electronic elements 20. The second plastic block 32 is injection molded to position only the first connection pins 11b and second connection pins 12b of two adjacent coils 10.

[0032] The first plastic block 31 is provided with a spacer-type coil connection portion 321, and the coil connection portion 321 is provided with a first step portion 311 so as to form a first connection block 312 and a second connection block 313. The first step portion 311 is provided with a first connection pin The first connection block 312 is provided at a position between the first connection pin 11b and the second connection pin 12b, and its extending direction forms a certain angle with the longitudinal direction of the side surface 13, and the vertical height of the top surface of the first connection block 312 is lower than that of the second connection block 313. The first connection block 312 and the second connection block 313 have welding grooves 3121 recessed from their top surfaces to accommodate the corresponding first connection pins 11b and second connection pins 12b, and the top surfaces of the first connection pins 11b and second connection pins 12b are exposed at the top surfaces of the first connection block 312 and the second connection block 313 to achieve electrical connection with the lead wires of the coil 10. The connection surfaces of the first connection pins 11b and the second connection pins 12b are flush with the top surfaces of the first connection block 312 and the second connection block 313, respectively. Before welding the first connection pin 11b and the second connection pin 12b to the starting lead wire 101 and the ending lead wire 102, tin solder is applied to each of them in advance to facilitate welding and fixing them to each other. During welding, a first step 311 is formed between the first connection block 312 and the second connection block 313 covering the first connection pin 11b and the second connection pin 12b. The first step 311 separates the tin solder used to weld the first connection pin 11b and the second connection pin 12b, preventing the occurrence of a short circuit after welding. In another embodiment, the connection surfaces of the first connection pin 11b and the second connection pin 12b may be lower than the corresponding first connection block 312 and second connection block 313, and such a sunken connection surface makes it easier for the tin solder to gather.

[0033] The second plastic block 32 is provided with a coil connection portion 321 and an electronic element connection portion 322, which are spaced apart from each other and connected via a connection structure 323. The electronic element connection portion 322 defines a receiving chamber 324 recessed downward from the top surface of the second plastic block 32. The top surfaces of the four connection pins 1b electrically connecting to the electronic element 20 are exposed at the bottom of the receiving chamber 324, enabling electrical connection with the welding pins of the electronic element 20. Gaps (not indicated by symbols) are left between the four walls of the electronic element 20 and the receiving chamber 324. The height of the electronic element 20 is lower than the height of the receiving chamber 324, preventing the electronic element 20 from being exposed to the top surface of the second plastic block 32 and being damaged in subsequent processes. The top surface of the second connection block 313 is flush with the top surface of the electronic element connection portion 322.

[0034] 3 and 6, a plastic body 4 is molded on the first plastic block 31, the second plastic block 32, and the metal circuit 2 by secondary injection molding, with the connection portion 1c and the bent portion 1d of the metal circuit 2 injection molded inside the plastic body 4 and the pin 1a exposed to the outside of the plastic body 4. The plastic body 4 has first positioning holes 111 formed in correspondence with the coil connection portions 321 of the two first plastic blocks 31, and second positioning holes 112 formed in correspondence with the electronic element connection portions 322 of the two second plastic blocks 32. The top surfaces of the second connection blocks 313 and the electronic element connection portions 322 of the first plastic block 31 and the second plastic block 32 are flush with the top surface 11 of the plastic body 4. The coil connection portion 321 of the first plastic block 31 and the second plastic block 32 is positioned in the coil welding area of the plastic body 4, the electronic element connection portion 322 of the second plastic block 32 is located on the bottom side of the coil 10, and the accommodating chamber 324 is exposed to the internal area between the two positioning posts 18 of the coil 10.

[0035] 6, 7, 10 to 14, after the plastic body 4 is injection molded on the metal circuit 2 and the plastic positioning block 3, the coil 10 is positioned on the positioning post 18 in the corresponding first groove 16, and in this case, the bottom side of the coil 10 is placed on the bottom surface of the first groove 16 of the plastic body 4, and is adhered and fixed with an adhesive so that there is no gap between them. In the prior art, the start lead wire 101 of the coil 10 straddles from the inner ring lead wire to the outer ring lead wire of the coil 10 and is attached alone at the bottom of the coil 10. , the starting lead wire 101 pushes up the coil 10, making it prone to tilting relative to the bottom of the first groove 16. The tilted coil 10 causes unstable setting, resulting in wobbling after installation, and further affecting the installation reliability and electrical stability of the coil 10. Therefore, in an embodiment of the present invention, a receiving groove (or notch) 161 is recessed between the first groove 16 and the first connecting block 312 of the plastic positioning block 3, and a second step portion 162 is formed between the receiving groove 161 and the first groove 16. The receiving groove 161 includes a bottom surface 1611 and a side surface 1612 connecting to the bottom surface 1611. At least a portion of the side wall of the positioning post 18 is located within the receiving groove 161. The depth of the accommodating groove 161 is greater than or equal to the thickness of the starting lead wire 101, thereby ensuring that the starting lead wire 101 does not protrude from the accommodating groove 161, and further ensuring that the coil 10 is stably adhered to the top surface 11 of the plastic body 4, thereby guaranteeing the flatness and stability of the coil 10.

[0036] When the bottom side of the coil 10 is installed in the first groove 16 and abuts against the bottom surface of the first groove 16, the side surface 1612 of the accommodating groove 161 is flush with the side wall of the positioning post 18, i.e., at least a portion of the side wall of the positioning post 18 is located within the accommodating groove 161, and the innermost lead wire of the coil 10 abuts against the side wall of the positioning post 18, so that the starting lead wire 101 is directly pulled from the innermost lead wire to the outer lead wire within the accommodating groove 161, which better ensures that the starting lead wire 101 is completely accommodated by the accommodating groove 161, and further, better ensures that the bottom side of the coil 10 is attached to the bottom surface of the first groove 16. Because the bottom surface 1611 of the receiving groove 161 is kept flush with the top surface of the first connection block 312, the starting lead wire 101 can complete the electrical connection with the first connection pin 11b in the same horizontal plane, eliminating the need to bend the starting lead wire 101 and ensuring that the starting lead wire 101 is less likely to break after electrical connection. The terminal lead wire 102 of the coil 10 is electrically connected directly to the second connection pin 12b on the top surface of the plastic block 3, and because the first connection pin 11b and the second connection pin 12b have a vertical height difference, the height difference between the starting lead wire 101 and the terminal lead wire 102 of the coil 10 can be offset, shortening the electrical connection distance between the connection pin 1b and the corresponding lead wire, ensuring that there are no stepped or bent portions between the lead wire and the connection pin 1b, and ensuring that the lead wire is less likely to break after electrical connection. In other embodiments, the bottom surface 1611 of the accommodating groove 161 may be higher than the top surface of the first connection block 312 in the thickness direction of the coil 10, thereby making it easier for the tin solder to be accommodated and collected on the top surface of the first connection block 312.

[0037] In another embodiment of the present invention, the first connection block 312 and the starting lead wire 101 may be installed simultaneously in the same receiving groove 161, i.e., the receiving groove 161 functions to receive the starting lead wire 101 and to sink the first connection block 312 (i.e., to sink it in line with the first connection pin 11b). In this case, the first step 311 and the second step 162 may be formed on opposite sides of the receiving groove 161. In another embodiment of the present invention, the top surface of the first connection block 312 is not limited to being flush with the bottom surface 1611 of the receiving groove 161, but may be lower or higher than the bottom surface 1611. Alternatively, the plastic positioning block 3 may be integrally molded with the plastic body 4. In this way, the corresponding first connection block 312 and second connection block 313 can be formed on the insulating base 1 by one-step injection molding.

[0038] In the present invention, by creating a difference in vertical height between the first connection pin 11b and the second connection pin 12b of the two branches 21 electrically connected to the coil 10, the reliability of the electrical connection between the starting lead wire 101 and the ending lead wire 102 of the coil 10 can be effectively improved.

[0039] The plastic body 4 is provided with a receiving groove 161 corresponding to the starting lead wire 101. The depth of the accommodating groove 161 is equal to or greater than the thickness of the starting lead wire 101, and this accommodates the starting lead wire 101 and prevents the coil 10 from wobbling after it is attached to the plastic body 4. The accommodating groove 161 also communicates with the outer wall of the positioning post 18, making it easy for the starting lead wire 101 to straddle from the innermost coil layer to the outermost coil layer.

[0040] In the present invention, a total of four coils 10 are provided, of which the first coil 1031 and the third coil 1033 are connected in series via the second coil branch 222c, and the second coil 1032 and the fourth coil 1034 are connected in series via the fourth coil branch 224c, thereby reducing the number of branches 21 and connection pins 1b and saving space for arranging the branches 21 inside the base.

[0041] In the present invention, before injection molding the plastic body 4, a plastic positioning block 3 is injection molded around the outside of the connection pin 1b in advance, and the connection pin 1b is accurately positioned by the plastic positioning block 3, thereby avoiding positioning errors of the connection pin 1b. During welding, a first step 311 is formed between the first connection block 312 and the second connection block 313, which cover the first connection pin 11b and the second connection pin 12b. The first step 311 separates the tin solder used to weld the first connection pin 11b and the second connection pin 12b, preventing the occurrence of a short circuit after welding.

[0042] In the present invention, the plastic body 4 of the insulating base 1 is provided with positioning posts 18 for positioning the coil 10, and the positioning posts 18 are located inside the coil 10, with three positioning posts 18 provided inside each coil 10, and an electronic element 20 is placed between two of the positioning posts 18. This installation can save as much installation space as possible for the coil 10 and the electronic element 20, and the plastic positioning block 3 is provided with an accommodation chamber 324 for accommodating the electronic element 20, and the depth of the accommodation chamber 324 is greater than the thickness of the electronic element 20, thereby preventing contact with the electronic element 20 when the coil 10 is installed.

[0043] In this embodiment, the coil 10 is horizontally installed in the first groove 16 on the top surface 11 of the plastic body 4, and the first connection pin 11b and the second connection pin 12b are horizontally exposed to the plastic positioning block 3 of the insulating base 1 and electrically connected to the coil 10. However, in other embodiments, the position and installation form of the coil 10 may be modified in various ways. For example, the coil 10 and the plastic positioning block 3 may be vertically installed in a vertical plane, and the first connection pin 11b and the second connection pin 12b may be vertically exposed to the plastic positioning block 3 and electrically connected to the coil 10. For related technologies, reference may be made to previously published Chinese invention patent applications CN112994400B, CN112821712B, etc.

[0044] Another embodiment of the present invention provides a coil-integrated base that is applicable to a camera module of an electronic device, the electronic device being a consumer electronic device such as a mobile phone or a tablet, and the coil-integrated base may be a base for a voice coil motor, or the like.

[0045] Hereinafter, a coil-integrated base according to another embodiment of the present invention will be described with reference to FIGS.

[0046] 15 to 18, the base on which the coils are integrated includes an insulating base 100 and at least one coil 200 provided on the insulating base 100. The insulating base 100 has a box shape, and may be rectangular or square. The insulating base 100 has a light-transmitting hole 11 penetrating through its upper and lower surfaces. The coil 200 is provided on the upper surface of the insulating base 100. A filter (not shown) is attached to the lower surface of the insulating base 100. The insulating base 100 has a mounting portion 12 recessed toward the upper surface, which is for receiving the coil 200. In a preferred embodiment, the number of coils 200 may be four, and the four coils 200 are mounted on the four sides of the insulating base 100. The coil 200 includes a starting lead wire 21, a terminal lead wire 22, and a coil body 20 connected between the starting lead wire 21 and the terminal lead wire 22. (See also Figures 22 and 23.) The insulating base 100 has a receiving groove 10 for receiving the starting lead wire 21. The receiving groove 10 extends from the winding start position of the coil body 20. Therefore, the starting lead wire 21 is received in the receiving groove 10, and the coil body 20 is placed flat on the insulating base 100, preventing the coil 20 from becoming unstable. The receiving groove 10 may be a straight or curved groove to facilitate the drawing out of the starting lead wire 21. Furthermore, in order to completely accommodate the cross section of the starting lead wire 21 within the accommodating groove 10, the width of the accommodating groove 10 in a direction perpendicular to the extension direction is greater than the width of the starting lead wire 21, and the height of the accommodating groove 10 is greater than or equal to the height of the starting lead wire 21.

[0047] The coil 200 is an air-core coil or a field-wound coil. The air-core coil is an air-core coil wound with enameled wire in advance and can be directly attached to the insulating base 100. The field-wound coil is a coil 200 formed by winding enameled wire of a certain length directly onto the insulating base 100 in the field according to actual needs. The insulating base 100 may further be provided with a winding post (not shown) protruding from the insulating base 100, and the winding post serves to position the coil 200 or align the winding. The coil body 20 includes multiple layers of windings from the bottom layer to the top layer, and each layer of winding includes multiple loops of windings from the innermost layer to the outermost layer. The starting lead wire 21 extends outward from the innermost layer of the coil body 20 and is located below the bottom layer of the coil body 20. The terminal lead wire 22 extends outward from the outermost layer of the coil body 20 and, together with the starting lead wire 21, extends outward from both longitudinal ends or both widthwise ends of the coil body 20.

[0048] 19, the coil-integrated base further includes a metal circuit 300 provided on the insulating base 100, the metal circuit 300 including multiple branches 30 having pin ends 31 and connection pins 32 exposed outside the insulating base 100, the initial lead wire 21 and the terminal lead wire 22 connected to at least some of the connection pins 32, and although the initial lead wire 21 and the terminal lead wire 22 are naturally connected to some of the connection pins 32 in the coil-integrated base shown in FIG. 19, to more clearly explain the connection pins 32, the connection pins 32 connected to the initial lead wire 21 and the terminal lead wire 22 are defined as connection pins 32b, and the remaining connection pins 32 are defined as connection pins 32a. When the initial lead wire 21 and the terminal lead wire 22 are connected to the connection pins 32b, a current flows through the coil 200, generating a driving torque and further cooperating with a magnet to generate a magnetic field around the coil 200. The coil-integrated base further includes an electronic element 33 mounted on the insulating base 100, the electronic element 33 being connected to the connection pin 32a of another part. The electronic element 33 is a Hall sensor element (Hall effect sensor) or an integrated circuit (IC) with a Hall sensor element integrated therein, and is used to measure magnetic flux in a magnetic field. Furthermore, by controlling the magnitude of the current in the coil 200, the lens in a camera module to which the coil-integrated base is applied can be moved more accurately. The insulating base 100 is provided with a receiving groove 13 for accommodating the electronic element 33, the connection pin 32a connecting to the electronic element 33 being exposed in the receiving groove 13, and the coil body 20 surrounds the receiving groove 13 on all four sides.

[0049] As shown in FIG. 17, the insulating base 100 is provided with a first recessed groove 16 for placing the coil 200 thereon, and the insulating base 100 further includes a first recessed groove 16 for receiving the starting lead wire 21. and a receiving portion 15 for receiving the connection pin 32b that connects to the terminating lead wire 22, the receiving portion 15 being provided at an end and / or a side portion of the first groove 16 corresponding to the position of the connection pin 32b, and the receiving groove 10 extending toward the receiving portion 15 corresponding to the starting lead wire 21. Specifically, the first groove 16 is a notch recessed in the insulating base 100, the receiving groove 10 is formed to be recessed further from a bottom wall 140 of the notch, and the receiving portion 15 is a slot recessed in the insulating base 100, and the depth of the slot is greater than that of the notch, which makes it easy to apply an electrically connectable material such as tin solder or conductive paste between the starting lead wire 21, the terminating lead wire 22 and the connection pin 32b.

[0050] There is a difference in height between the first groove 16 and the connection pin 32b, and when the starting lead wire 21 and the ending lead wire 22 extending from the coil body 20 are connected to the connection pin 32b, the starting lead wire 21 and the ending lead wire 22 are likely to be excessively pulled and broken, making it impossible to connect the coil 200 and the metal circuit 300 tightly. In view of this situation, as shown in Figs. 18 to 23, a gap is provided between the first groove 16 and the storage portion 15 to secure the starting lead wire 21 and the ending lead wire 22. The lead wire grooves 14 are formed to further support the lead wires 22, and the starting lead wire 21 and the ending lead wire 22 can be pressed against the connection pin 32b with less force than if there were no lead wire grooves 14, preventing the starting lead wire 21 and the ending lead wire 22 from being pulled excessively due to excessive force, and further preventing the starting lead wire 21 and the ending lead wire 22 from being pulled excessively and breaking due to the difference in height between the first recessed groove 16 and the connection pin 32b. The accommodating groove 10 extends to the lead wire groove 14 corresponding to the starting lead wire 21 and communicates with the lead wire groove 14, and the slot appearing in the accommodating portion 15 also communicates with the lead wire groove 14, so that the starting lead wire 21 passes through the corresponding accommodating groove 10 to reach the lead wire groove 14 and then to the slot, and the ending lead wire 22 passes through the corresponding lead wire groove 14 to reach the slot.

[0051] 18, the lead wire groove 14 extends obliquely along the first groove 16 to the storage section 15, and "extending obliquely" means that the lead wire groove 14 is mainly inclined at an angle relative to the first groove 16. Of course, a chamfered portion 17 may be provided at the position where the lead wire groove 14 connects to the storage groove 10 or the first groove 16, or at the position where the lead wire groove 14 connects to the storage section 15. The chamfered portion 17 may be a linear chamfered portion or a rounded chamfered portion. In this way, the lead wire groove 14 can smoothly transition between the first groove 16 and the storage section 15, and the chamfered portion 17 can ease the bending of the starting lead wire 21 and the ending lead wire 22, thereby avoiding the problem of breakage. Alternatively, in another embodiment, the lead wire groove 14 extends in an arc shape along the first groove 16 to the storage section 15, and extending in an arc shape means that the lead wire groove 14 is mainly arc-shaped, and the starting lead wire 21 and the ending lead wire 22 extend to the storage section 15 along the arc-shaped lead wire groove 14.

[0052] As shown in FIG. 24, in another embodiment, the starting lead wire 21 and the ending lead wire 22 can be connected to the connection pins 32b by tin solder. Specifically, a tin solder layer 34 is provided at the connection position between the starting lead wire 21 and the ending lead wire 22 and the corresponding connection pins 32b. The tin solder layer 34 can be applied in advance to the corresponding locations of the connection pins 32b, the starting lead wire 21, and the ending lead wire 22, and heated in a reflow furnace to tightly connect the starting lead wire 21 and the ending lead wire 22 to the connection pins 32b. An adhesive layer can also be provided in the slots appearing in the storage section 15 to fix the starting lead wire 21 and the ending lead wire 22 in order to prevent the starting lead wire 21 and the ending lead wire 22 from moving. That is, the starting lead wire 21 and the ending lead wire 22 can be applied in advance to the corresponding locations of the connection pins 32b, the starting lead wire 21, and the ending lead wire 22. After the termination lead wire 22 and the corresponding connection pin 32b are welded together, an adhesive is injected into the receiving portion 15 to form an adhesive layer.

[0053] Since the terminal lead wire 22 extends from the top layer of the coil body 20 and a relatively long portion of the terminal lead wire 22 is floating, in yet another embodiment, as shown in Figures 25 and 26, the insulating base 100 is provided with a protrusion 18 that extends upward corresponding to the position of the terminal lead wire 22 in order to position and support the terminal lead wire 22, and a positioning groove 19 is recessed in the protrusion 18, and the terminal lead wire 22 is placed in the positioning groove 19 and passed through the positioning groove 19 to the storage section 15, thereby preventing the terminal lead wire 22 from rattling or falling downward from the outermost layer of the coil 200.

[0054] To summarize the above explanation, the base on which the coil of the present invention is integrated has accommodation grooves 161, 10 in the insulating base 100 that accommodate the starting lead wire 21, and the accommodation grooves 161, 10 extend from the winding start position of the coil body 105, 20.Therefore, even if the starting lead wire 21 is provided at the bottom of the coil body 105, 20, the starting lead wire 21 does not impair the stability of the coil body 105, 20, and the coil body 105, 20 is less likely to wobble.

[0055] Finally, the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features thereof can be replaced with equivalents, and such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

[0056] The above are only some embodiments of the present invention, not all embodiments, and any equivalent modifications made by those skilled in the art to the technical solutions of the present invention after reading the specification of the present invention are all included in the scope of the claims of the present invention.

Claims

1. a coil fixed to the insulating base and electrically connected to the metal circuit, the coil including a starting lead wire, a terminal lead wire, and a coil body connected between the starting lead wire and the terminal lead wire, the insulating base having an accommodation groove for accommodating the starting lead wire, the accommodation groove extending from a winding start position of the coil body, the insulating base having a mounting portion for supporting the coil, the coil disposed on a bottom surface of the mounting portion, the starting lead wire connected to an innermost layer and a bottommost layer of the coil body, and a lead-out position of the starting lead wire is located on the innermost side of the bottom layer and is drawn out from the bottom side of the coil body across the outer layers and exposed on the outermost side of the bottom side of the coil body, the starting lead wire is in close contact with the bottom side of the coil body along a direction perpendicular to the axial direction of the coil and forms a single layer, the draw-out position of the terminal lead wire is located on the outermost layer of the coil and is higher in the axial direction of the coil than the draw-out position of the starting lead wire, the accommodating groove is formed by being further recessed from the bottom surface of the mounting portion and is installed facing the coil, the width of the accommodating groove is greater than the width of the starting lead wire and the height of the accommodating groove is equal to or greater than the height of the starting lead wire.

2. 2. The coil-integrated base of claim 1, wherein the metal circuit has a plurality of branches, each of which includes a connection pin provided on the insulating base at one end, and wherein the connection pin of one of the plurality of branches is a first connection pin electrically connected to the starting lead wire, and another connection pin of the plurality of branches is a second connection pin electrically connected to the ending lead wire.

3. 3. A coil-integrated base as described in claim 2, wherein each of the first connection pin and the second connection pin has a connection surface that electrically connects to the corresponding starting lead wire and ending lead wire, the first connection pin is lower than the second connection pin in the axial direction of the coil, and the connection surface of the second connection pin is higher than the connection surface of the first connection pin in the axial direction of the coil.

4. 4. The coil-integrated base according to claim 3, wherein the starting lead wire and the ending lead wire are provided on opposite sides of the coil, and the first connection pin and the second connection pin are exposed to the insulating base on opposite sides of the coil.

5. 5. The coil-integrated base according to claim 4, wherein the accommodating groove has a bottom surface and a side surface, and the bottom surface of the accommodating groove is higher than the first connection pin in the axial direction of the coil or is flush with the first connection pin.

6. 6. A coil-integrated base as described in claim 5, wherein at least two positioning posts are protruding from the insulating base at a distance from each other, the coil is a wound air-core coil fitted around the outside of the at least two positioning posts, the at least two positioning posts are located at opposite ends of the coil, and at least a portion of the side wall of the positioning post close to the starting lead wire is located within the accommodating groove.

7. 7. The coil-integrated base of claim 6, wherein the insulating base comprises a plastic positioning block formed by primary injection molding and a plastic body formed by secondary injection molding on the plastic positioning block and the metal circuit, the plastic positioning block being injection molded around the outer periphery of the connection pin and exposing the connection surface of the connection pin, the plastic body forming a positioning hole for accommodating the plastic positioning block, and the top surface of the plastic positioning block being exposed to the plastic body.

8. 8. The coil-integrated base of claim 7, further comprising at least two of the coils spaced apart, the terminal lead wire and the starting lead wire between two adjacent coils being closely spaced, and the second connection pin and the first connection pin corresponding to the terminal lead wire and the starting lead wire sharing one of the plastic positioning blocks.

9. 9. The coil-integrated base of claim 8, wherein the plastic positioning block includes a coil connection portion, the coil connection portion comprising a first connection block, a second connection block, and a first step portion formed between the first connection block and the second connection block, the first connection block being lower than the second connection block in the axial direction of the coil, the connection surface of the first connection pin being exposed to the first connection block, the connection surface of the second connection pin being exposed to the second connection block, and the bottom surface of the accommodating groove being higher than or flush with the top surface of the first connection block in the axial direction of the coil.

10. 10. A coil-integrated base as described in claim 9, wherein the insulating base is provided with a first groove corresponding to each of the coils to accommodate the coil, the bottom surface of the coil abuts against the bottom surface of the first groove, a second step portion is formed between the bottom surface of the accommodation groove and the bottom surface of the first groove, and the top surface of the second connection block is flush with the bottom surface of the first groove.

11. 10. The coil-integrated base of claim 9, wherein the at least two coils include a first coil and a third coil that are disposed opposite each other and connected in series, the branches include at least a first coil branch, a second coil branch, and a fifth coil branch, each of the first coil branch and the fifth coil branch includes a pin exposed to the outside of the insulating base, one end of the first coil branch includes the pin and the other end includes the first connection pin, one end of the second coil branch includes the second connection pin and the other end includes the first connection pin, one end of the fifth coil branch includes the pin and the other end includes the second connection pin, the starting lead wire of the first coil is connected to the first connection pin of the first coil branch and the terminating lead wire is connected to the second connection pin of the second coil branch, the starting lead wire of the third coil is connected to the first connection pin of the second coil branch and the terminating lead wire is connected to the second connection pin of the fifth coil branch.

12. The base on which the coils are integrated includes four coils, the first coil, the second coil, the third coil, and the fourth coil, which are spaced apart from each other, and the branches further include a third coil branch, a fourth coil branch, and a sixth coil branch, and each of the first coil branch, the fifth coil branch, the third coil branch, and the sixth coil branch includes the pin exposed to the outside of the insulating base, one end of the third coil branch includes the pin and the other end includes the first connection pin, and one end of the fourth coil branch includes the second connection pin and the other end includes the first connection pin.

12. The coil-integrated base of claim 11, wherein one end of the sixth coil branch includes the pin and the other end includes the second connection pin, the second coil and the fourth coil are arranged opposite each other and connected in series, the starting lead wire of the second coil is connected to the first connection pin of the third coil branch and the ending lead wire is connected to the second connection pin of the fourth coil branch, the starting lead wire of the fourth coil is connected to the first connection pin of the fourth coil branch and the ending lead wire is connected to the second connection pin of the sixth coil branch.

13. 13. The coil-integrated base of claim 12, wherein the insulating base has a top surface and a bottom surface opposite the top surface, the coil is horizontally disposed on the top surface, and the connection pin is exposed on the top surface.

14. 14. The coil-integrated base of claim 13, wherein the base further comprises four side surfaces and a through hole penetrating the top surface and the bottom surface, the through hole forming an annular inner wall, the space between the annular inner wall and the side surfaces being a mounting area, the mounting area having four sub-mounting areas corresponding to the coils, each of the coils being positioned in the longitudinal direction of the side surfaces, and the coil connection portion being located between two adjacent sub-mounting areas.

15. 15. The coil-integrated base of claim 14, wherein the coil-integrated base further comprises an electronic element provided on the insulating base and electrically connected to the metal circuit, the electronic element being located close to the coil connection portion, the plastic positioning block comprising an electronic element connection portion and a connection structure connected between the coil connection portion and the electronic element connection portion, the connection pin electrically connecting to the electronic element having the connection surface, the connection surface of the connection pin electrically connecting to the electronic element being exposed to the electronic element connection portion, and the top surface of the electronic element connection portion being flush with the top surface of the second connection block.

16. A coil-integrated base as described in claim 15, wherein a storage chamber is recessed in the top surface of the electronic element connection portion, the connection pin electrically connected to the electronic element is exposed at the bottom surface of the storage chamber, the electronic element and the connection pin are electrically connected within the storage chamber, and the top surface of the electronic element connection portion is higher than the top surface of the electronic element in the axial direction of the coil.

17. Connection portions are formed between the pin and the connection pin in the branch and between the first connection pin and the second connection pin, and portions of the connection portions close to the connection pin, the first connection pin, and the second connection pin are all bent to form bent portions, and all of the connection portions are located on the same first horizontal plane, and the bent portions of the branches electrically connected to the coil are bent upward from the connection portions in the axial direction of the coil, and the connection surface of the first connection pin and the connection surface of the second connection pin are both higher than the first horizontal plane, and the bent portions of the branches electrically connected to the electronic element are A coil-integrated base as described in claim 16, wherein the bent portion is bent downward from the connection portion in the axial direction of the coil, the connection surfaces of the connection pins electrically connecting to the electronic element are all lower than the first horizontal plane, and the top surface of the electronic element is lower than the connection surface of the second connection pin.

18. 17. The coil-integrated base of claim 16, wherein a cavity is formed in the coil body of the coil, and the electronic element is located within the cavity of the coil and offset from the coil body in the axial direction of the coil.

19. The coil-integrated base according to claim 15 , wherein the electronic element is a Hall sensor element or an integrated circuit in which a Hall sensor element is integrated.

20. The insulating base further includes a storage section for storing a first connection pin and a second connection pin for connecting to the starting lead wire and the ending lead wire, the insulating base includes a mounting section for placing the coil, the storage section is provided at the end and / or side of the mounting section, and the storage groove extends toward the storage section corresponding to the starting lead wire, as described in claim 1.

21. A coil-integrated base as described in claim 20, wherein a lead wire groove is formed between the mounting portion and the storage portion, extending at an angle along the mounting portion to the storage portion, or extending in an arc shape along the mounting portion to the storage portion.

22. 22. The coil-integrated base according to claim 21, wherein the receiving groove extends to the lead wire groove corresponding to the starting lead wire and is in communication with the lead wire groove.

23. 23. The coil-integrated base according to claim 22, wherein a chamfered portion is provided at a position connecting the lead wire groove and the accommodation groove or the placement portion.

24. The coil-integrated base of claim 23, characterized in that the accommodating groove is formed by being further recessed from the bottom surface of the mounting portion, the accommodating portion is a slot recessed in the insulating base, and the slot is in communication with the lead wire groove.

25. 25. The coil-integrated base of claim 24, wherein a tin solder layer is provided at a position where the starting lead wire and the ending lead wire are connected to the corresponding connection pin, and an adhesive layer is provided in the slot for fixing the starting lead wire and the ending lead wire.

26. 2. The coil-integrated base of claim 1, wherein the insulating base has a protrusion at a position corresponding to the terminal lead wire, the protrusion has a positioning groove recessed therein, and the terminal lead wire is positioned in the positioning groove.

27. A motor comprising: a base on which the coil described in any one of claims 1 to 19 is integrated; a casing positioned above the base on which the coil is integrated; and a movable module housed in the casing, wherein the movable module includes a magnetic element that cooperates with the coil.

28. 28. The motor according to claim 27, wherein the coil is a pressing coil that presses and moves the movable module, a functional coil that prevents the movable module from vibrating, or a braking coil that controls the operation of the motor.

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