Coil and spring connection structure, voice coil motor, camera device, electronic product

Abstract

The present invention discloses a coil and spring connection structure, a voice coil motor, a camera device, and an electronic product. The technical solution is as follows: a coil and spring connection structure, including a carrier, a coil, and an upper spring connected to the carrier, the coil surrounds the side wall of the carrier, and the upper spring includes two symmetrically arranged upper spring sections, each of which includes an inner connecting section, an outer connecting section, and an upper cantilever; the carrier is integrally formed with a riveted column penetrating through a riveted hole, and the carrier is provided with two winding grooves for the ends of the coil to pass through and insert, and the two inner connecting sections are integrally formed with winding sections corresponding to the winding grooves, and the winding section is provided with a fixing groove for the ends of the coil to be wound around. The present invention is convenient and effective in determining the welding position of the end of the coil and the winding section, and in addition, by pulling the wire in the reverse direction, the coil tensioning effect is achieved, which effectively prevents the coil from loosening and falling off, and improves product quality and yield rate.

Description

Technical Field

[0001] The present invention relates to the field of photographic equipment, and in particular to a coil and spring connection structure, a voice coil motor, a photographic device, and an electronic product. Background Art

[0002] The existing voice coil motor structure generally includes a base, a carrier, a bracket, an upper spring, a lower spring, and a housing. The lens is mounted on the carrier, and the upper spring is fixed to the bracket by heat riveting, and the lower spring is fixed to the base.

[0003] The existing carrier is generally provided with a winding post, the wire end of the coil is wound around the winding post, and the upper spring abuts against the winding post and is connected by conductive glue or soldering to achieve conduction between the coil and the upper spring.

[0004] The connection method between the coil and the upper spring is complicated and requires multiple processes. In addition, it is not easy to tighten the coil.

[0005] There are also cases where the coil wire ends are directly connected to the upper spring, which can easily lead to unstable working position, poor consistency of coil position, and poor welding quality.

[0006] Therefore, it is necessary for us to improve such a structure to overcome the above-mentioned defects. Summary of the invention

[0007] The purpose of the present invention is to provide a coil and spring connection structure, a voice coil motor, a camera device, and an electronic product, which can facilitate and effectively determine the welding position of the wire end and the winding part. In addition, by pulling the wire in the opposite direction, the coil can be tensioned to effectively avoid the coil from loosening and falling off, thereby improving product quality and yield rate.

[0008] The above technical objectives of the present invention are achieved through the following technical solutions: a coil and spring connection structure, comprising a carrier, a coil, and an upper spring connected to the carrier, the coil is wrapped around the side wall of the carrier, the upper spring comprises two symmetrically arranged upper spring sections, each upper spring section comprises an inner connecting section connected to the carrier, an outer connecting section, and an upper cantilever arranged between the inner connecting section and the outer connecting section, the outer connecting section and the upper cantilever are both provided with two, the inner connecting section is integrally formed with two mounting portions corresponding to the upper cantilever, and the mounting portion is provided with a rivet hole; the carrier is integrally formed with a rivet column penetrating through the rivet hole, and the carrier is provided with two winding grooves for the ends of the coil to penetrate and insert respectively, the two inner connecting sections are integrally formed with winding sections corresponding to the winding grooves, the winding sections are located directly above the winding grooves, the winding sections are provided with a fixing groove for conveniently winding the ends of the coil ends, the opening direction of the fixing groove is parallel to the length direction of the winding groove, and the fixing groove is located in the winding section toward the center of the carrier.

[0009] The present invention is further configured as follows: the winding portion is located at an end portion of the inner connecting portion, and the winding portions of the two inner connecting portions are arranged opposite to each other.

[0010] The present invention is further configured as follows: the carrier is integrally formed with a lens.

[0011] The present invention is further configured as follows: the installation portion is provided with a gluing hole for gluing and fixing.

[0012] The present invention is further configured as follows: a limiting protrusion for positioning the inner connecting portion is integrally formed on the upper end surface of the carrier, and the inner connecting portion is inserted into a cavity between the lens and the limiting protrusion.

[0013] The present invention is further configured as follows: the carrier is provided with a receiving groove for the upper cantilever to move up and down.

[0014] The present invention is further configured as follows: a voice coil motor having the above-mentioned coil and spring connection structure, further comprising a base, the base being integrally formed with four positioning columns respectively connected to the external connection part, the positioning columns being integrally formed with heat rivet columns, the external connection part being provided with heat rivet holes for the heat rivet columns to pass through, the four positioning columns being connected with a cover plate covering the four external connection parts, the cover plate and the positioning columns clamping and fixing the external connection part, the cover plate being provided with a positioning hole on the end face facing the positioning column for the heat rivet column to pass through.

[0015] The present invention is further provided as follows: a photographic device having the above-mentioned coil and spring connection structure.

[0016] The present invention is further provided as follows: an electronic product having the above-mentioned coil and spring connection structure.

[0017] In summary, the present invention has the following beneficial effects:

[0018] When the inner connection part is fixed to the carrier, the rivet post is inserted into the rivet hole and fixed by hot riveting, and glue is applied to the glue hole position to fix the inner connection part to the upper end surface of the carrier.

[0019] When connecting the two ends of the coil to the corresponding inner upper spring parts respectively, the end wire of the coil is first inserted into the winding groove, at which time the coil wire end faces the direction of the lens, and then the coil wire end is folded back and wound around the winding part, and the wire end is inserted into the fixed groove position, and the position of the coil wire end relative to the winding part is effectively positioned, and then the wire end and the winding part are fixed by electric welding, so as to realize the connection between the coil wire end and the winding part, and effectively determine the welding position of the wire end and the winding part; in addition, after the coil wire end is wound around the winding part, the wire can be pulled in the reverse direction to realize the effect of tensioning the coil, effectively avoiding the situation where the coil is loose and falls off, thereby effectively improving product quality and yield rate.

[0020] When assembling the upper spring, the inner connection part of the upper spring is fixedly mounted on the upper end surface of the carrier, and the outer connection part is mounted on the corresponding positioning column, so that the hot riveting column is inserted into the hot riveting hole to achieve the position of the outer connection part relative to the positioning column, and then the cover plate is closed on the outer connection part to achieve the outer connection part being clamped and fixed by the cover plate and the end surface of the positioning column, and the step of hot riveting the hot riveting column and the outer connection part can be effectively avoided, thereby effectively avoiding the problem of difficulty in operation due to insufficient hot riveting space, and at the same time avoiding the problem of spring deformation during hot riveting, and achieving accurate positioning, improving product quality and yield rate through the above method. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of Example 1;

[0022] Figure 2 is a schematic structural diagram of the upper spring in Embodiment 1;

[0023] Figure 3 is an exploded schematic diagram of Example 2;

[0024] Figure 4 is a schematic diagram of Example 2 with the cover plate hidden;

[0025] Figure 5 is a cross-sectional view of Example 2;

[0026] Figure 6 is a schematic structural diagram of the cover plate in Example 2;

[0027] Figure 7 It is a structural schematic diagram of the base in Example 2.

[0028] The corresponding component names represented by the numbers in the figure are: 1. Base; 2. Carrier; 3. Upper spring; 3-1, upper spring division; 5. Magnet; 6. Coil; 7. Lens; 8. Positioning column; 10. Internal connection part; 11. External connection part; 12. Upper cantilever; 13. Hot riveting column; 14. Hot riveting hole; 15. Cover plate; 17. Protrusion; 22. Riveting hole; 23. Gluing hole; 24. Installation part; 25. Riveting column; 26. Winding groove; 27. Winding part; 28. Fixing groove; 29. ​​Limiting protrusion; 30. Accommodating groove. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with illustrations and specific embodiments.

[0030] Example 1: Figure 1 As shown, a coil and spring connection structure proposed by the present invention includes a carrier 2, an upper spring 3, and a coil 6. The carrier 2 is integrally formed with a lens 7, and the lens 7 is integrally formed with the carrier 2 to reduce the number of parts. The upper spring 3 includes two symmetrically arranged upper spring sections 3-1, and the two upper spring sections 3-1 are arranged at intervals. Each upper spring section 3-1 includes an inner connecting portion 10 installed on the carrier 2, an outer connecting portion 11, and an upper cantilever 12 connected between the inner connecting portion 10 and the outer connecting portion, wherein the outer connecting portion 11 and the upper cantilever 12 are each provided in two.

[0031] In order to fix the inner connecting part 10, a mounting part 24 is integrally formed between the inner connecting part 10 and the upper cantilever 12, and the mounting part 24 is provided with a rivet hole 22 and a gluing hole 23, and the carrier 2 is integrally formed with a rivet post 25 for the rivet post 25 to be sleeved. When the inner connecting part 10 is fixed to the carrier 2, the rivet post 25 is inserted into the rivet hole 22 and fixed by hot riveting, and the gluing hole 23 is fixed by spot gluing, so as to fix the inner connecting part 10 to the upper end surface of the carrier 2.

[0032] In order to facilitate the connection between the end wire of the coil 6 and the upper spring section 3-1, two winding grooves 26 corresponding to the two inner connecting parts 10 are provided on the upper end surface of the carrier 2, and the two winding grooves 26 are respectively provided for the end wires of the coil 6 to pass through; each inner connecting part 10 is integrally formed with a winding part 27, which is located directly above the winding groove 26, and the winding part 27 is located at the end position of the inner connecting part 10, and the winding parts 27 of the two inner connecting parts 10 are arranged opposite to each other. In addition, a fixing groove 28 for the end wire of the coil 6 to be wound is provided on the side wall of the winding part 27, and the fixing groove 28 is arranged in a U shape, and the opening of the fixing groove 28 is parallel to the length direction of the winding groove 26, and the fixing groove 28 is located in the winding part 27 toward the center direction of the carrier 2. When the two ends of the coil 6 are respectively connected to the corresponding inner upper spring division 3-1, the end thread of the coil 6 is first inserted into the winding groove 26, and the end thread of the coil 6 is facing the direction of the lens 7. Then, the end thread of the coil 6 is folded back and rewound on the winding part 27, and the end thread is inserted into the position of the fixing groove 28, and the position of the end thread of the coil 6 relative to the winding part 27 is effectively positioned. Then, the position of the end thread and the winding part 27 are fixed by electric welding, so as to realize the connection between the end thread of the coil 6 and the winding part 27, and at the same time effectively determine the welding position of the end thread and the winding part 27. In addition, after the end thread of the coil 6 is rewound on the winding part 27, the wire can be pulled in the reverse direction to realize the effect of tensioning the coil 6, effectively avoiding the situation that the coil 6 is loose and falls off, thereby effectively improving the product quality and yield rate.

[0033] The upper end surface of the carrier 2 is integrally formed with a limiting protrusion 29 for limiting the position of the inner connecting part 10. A cavity for the inner connecting part 10 to be inserted is formed between the limiting protrusion 29 and the side wall of the lens 7, and the inner connecting part 10 is clamped, so as to effectively limit and position the inner connecting part 10. The carrier 2 is also provided with a receiving groove 30 for the upper cantilever 12 to move up and down. The receiving groove 30 facilitates the upper cantilever 12 to move up and down, and the limiting protrusion 29 can further limit and fix the inner connecting part 10.

[0034] Embodiment 2: A voice coil motor has the coil and spring connection structure of embodiment 1, and also includes a base 1 and a magnet 5. The magnet 5 is located at the corner of the base 1. The base 1 is integrally formed with four positioning columns 8 respectively connected to the external connection parts 11. The four external connection parts 11 are partially fixed to the corresponding positioning columns 8.

[0035] The positioning column 8 is integrally formed with a heat-riveted column 13, which is vertically arranged. The external connection part 11 is provided with a heat-riveted hole 14 corresponding to the heat-riveted column 13. The four positioning columns 8 are connected with a cover plate 15 for covering the four external connection parts 11. The cover plate 15 and the positioning column 8 clamp and fix the external connection part 11. The end of the cover plate 15 facing the positioning column 8 is integrally formed with a protrusion 17 that abuts against the external connection part 11. The protrusion 17 is provided with a positioning hole corresponding to the heat-riveted column 13, and the lower end surface of the cover plate 15 is attached to the upper end surface of the magnet 5. That is, the cover plate 15 is ensured to abut against the external connection part 11 through the protrusion 17 to prevent the external connection part 11 from moving relative to each other. At the same time, the heat-riveted column 13 is inserted into the positioning hole to achieve the function of positioning the cover plate 15 and prevent the adjacent rotation of the cover plate 15.

[0036] When assembling the upper spring 3, the inner connection part 10 of the upper spring 3 is installed and fixed on the upper end surface of the carrier 2, and the outer connection part 11 is installed on the corresponding positioning column 8, so that the hot riveting column 13 is inserted into the hot riveting hole 14 to achieve the position of the outer connection part 11 relative to the positioning column 8, and then the cover plate 15 is covered on the outer connection part 11, so that the cover plate 15 and the end surface of the positioning column 8 clamp and fix the outer connection part 11, and the step of hot riveting the hot riveting column 13 and the outer connection part 11 can be effectively avoided, thereby effectively avoiding the problem of difficulty in operation due to insufficient hot riveting space, and at the same time, the problem of spring deformation during hot riveting can be avoided. Through the above method, accurate positioning can be achieved and product quality and yield rate can be improved.

[0037] Embodiment 3: A photographic device having the coil and spring connection structure described in Embodiment 1.

[0038] Embodiment 4: An electronic product having the coil and spring connection structure described in Embodiment 1.

[0039] In this document, the directions or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", and "horizontal" are based on the directions or positional relationships shown in the accompanying drawings and are only for the clarity of expressing the technical solutions and the convenience of description, and therefore should not be understood as limitations of the present invention.

[0040] In this document, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A coil and spring connection structure, comprising a carrier (2), a coil (6), and an upper spring (3) connected to the carrier (2), characterized in that: The coil (6) surrounds the side wall of the carrier (2); the upper spring (3) comprises two symmetrically arranged upper spring sections (3-1); each upper spring section (3-1) comprises an inner connecting section (10) connected to the carrier (2), an outer connecting section (11), and an upper cantilever (12) arranged between the inner connecting section (10) and the outer connecting section (11); the outer connecting section (11) and the upper cantilever (12) are both provided in two numbers; the inner connecting section (10) is integrally formed with two mounting portions (24) corresponding to the upper cantilever (12); the mounting portions (24) are provided with rivet holes (22); the carrier (2) is integrally formed with A rivet post (25) is inserted into the rivet hole (22), and the carrier (2) is provided with two winding grooves (26) for inserting and inserting the ends of the coil (6) at both ends, and the two inner connecting parts (10) are integrally formed with winding parts (27) corresponding to the winding grooves (26), and the winding parts (27) are located directly above the winding grooves (26). The winding parts (27) are provided with a fixing groove (28) for conveniently winding the ends of the coil (6) around, and the opening direction of the fixing groove (28) is parallel to the length direction of the winding groove (26), and the fixing groove (28) is located in the direction of the winding part (27) toward the center of the carrier (2).

2. A coil and spring connection structure according to claim 1, characterized in that: The winding portion (27) is located at the end of the inner connecting portion (10), and the winding portions (27) of the two inner connecting portions (10) are arranged opposite to each other.

3. The coil and spring connection structure according to claim 1, characterized in that: The carrier (2) is integrally formed with a lens (7).

4. The coil and spring connection structure according to claim 1, characterized in that: The installation portion (24) is provided with a gluing hole (23) for gluing and fixing.

5. The coil and spring connection structure according to claim 3, characterized in that: A limiting protrusion (29) for locating the position of the inner connecting portion (10) is integrally formed on the upper end surface of the carrier (2), and the inner connecting portion (10) is inserted into a cavity between the lens (7) and the limiting protrusion (29).

6. The coil and spring connection structure according to claim 1, characterized in that: The carrier (2) is provided with a receiving groove (30) for the upper cantilever (12) to move up and down.

7. A voice coil motor, characterized in that: A coil and spring connection structure according to any one of claims 1 to 6, further comprising a base (1), wherein the base (1) is integrally formed with four positioning columns (8) respectively connected to the external connection part (11), the positioning columns (8) are integrally formed with hot riveting columns (13), the external connection part (11) is provided with hot riveting holes (14) for the hot riveting columns (13) to pass through, the four positioning columns (8) are connected with a cover plate (15) covering the four external connection parts (11), the cover plate (15) and the positioning columns (8) clamp and fix the external connection part (11), and the cover plate (15) is provided with a positioning hole for the hot riveting column (13) to pass through on the end surface facing the positioning column (8).

8. A photographic device, characterized in that: A coil and spring connection structure according to any one of claims 1 to 6.

9. An electronic product, characterized in that: A coil and spring connection structure according to any one of claims 1 to 6.

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