Shell assembly and linear motor

Abstract

The utility model belongs to the technical field of electronic equipment, and particularly relates to a shell assembly and a linear motor. The shell assembly comprises a main body shell and an end cover, at least one end of the main body shell is provided with an opening, the end cover is integrally formed through blanking and bending, the end cover comprises a bottom plate, a connecting part and a side plate, the bottom plate is connected with the side plate through the connecting part, the connecting part is bent, and the side plate is arranged on the peripheral edge of the bottom plate in a surrounding mode. The end cover covers the opening and is fixed with the main body shell to define an accommodating space; according to the technical scheme, the side plate is arranged on the peripheral edge of the bottom plate in the surrounding mode, and the end cover is integrally formed in the blanking and bending mode, so that the side plate and the bottom plate can be connected and arranged through simple deformation machining, and the machining applicability and the machining efficiency are improved; the accommodating space is used for accommodating a stator assembly and an oscillator assembly of the linear motor, and the end cover is used for covering the opening.

Description

Technical Field

[0001] This utility model belongs to the field of electronic equipment technology, specifically relating to a housing assembly and a linear motor. Background Technology

[0002] With the development and application of haptic feedback mechanisms in electronic products, linear motors, as the actuators for haptic feedback, are becoming increasingly diversified in structure and function. Linear motors are widely used in mobile phones and other electronic devices due to their fast response and excellent vibration feedback. Currently, the housing and bottom shell of linear motors are box-shaped parts, mostly manufactured using bending and stretching processes. For parts with small sidewall dimensions, machining these box-shaped parts is currently difficult, reducing processing efficiency. Utility Model Content

[0003] The purpose of this invention is to at least solve the problem of the small sidewalls of existing box-shaped housing parts being difficult to process. This purpose is achieved through the following technical solution:

[0004] The first aspect of this utility model provides a housing assembly, comprising:

[0005] The main shell, wherein at least one end of the main shell is open;

[0006] An end cap is integrally formed by punching and bending. The end cap includes a base plate, a connecting part, and a side plate. The base plate is connected to the side plate through the connecting part. The connecting part is bent and the side plate is arranged around the outer periphery of the base plate. The end cap covers the opening and is fixed to the main shell to form an accommodating space.

[0007] According to the technical solution of this utility model, the side plate is arranged around the outer periphery of the base plate, and since the end cover is formed by punching and bending, the side plate can be connected and arranged with the base plate through simple deformation processing, which improves the applicability and efficiency of processing. In addition, the accommodating space is used to accommodate the stator assembly and oscillator assembly of the linear motor, and the end cover is used to seal the opening.

[0008] In addition, the housing assembly according to this utility model may also have the following additional technical features:

[0009] In some embodiments of this utility model, the main shell is cylindrical, and both ends of the main shell are provided with openings, and the two end caps are respectively sealed to the two openings.

[0010] In some embodiments of this utility model, the side plate is welded and fixed to the bottom plate.

[0011] In some embodiments of this utility model, a first positioning groove is formed on the outer side of the main shell, and the end cap further includes a first positioning body. The first positioning body is formed by a portion of the side plate protruding away from the bottom plate and is inserted into the first positioning groove.

[0012] In some embodiments of this utility model, a second positioning groove is formed on the outer side of the main shell, and the end cap further includes a second positioning body. The second positioning body is formed by a portion of the side plate protruding away from the bottom plate. The second positioning body is inserted into the second positioning groove, and the first positioning body and the second positioning body are disposed opposite to each other.

[0013] In some embodiments of this utility model, the two ends of the side plate protrude in a direction away from the bottom plate to form a first mating part and a second mating part, and the first mating part and the second mating part are connected to form the second positioning body.

[0014] In some embodiments of this utility model, one of the first mating part and the second mating part is provided with a snap-fit ​​groove, and the other is provided with a snap-fit ​​protrusion. When the side plate is closed, the snap-fit ​​groove and the snap-fit ​​protrusion engage with each other.

[0015] In some embodiments of this utility model, the snap-fit ​​groove has an opening and a bottom, and the size of the snap-fit ​​groove gradually increases along a first direction from the opening to the bottom, where the first direction is the extension direction of the second positioning body.

[0016] In some embodiments of this utility model, the end cap and the main body shell are welded together.

[0017] The second aspect of this utility model provides a linear motor, comprising:

[0018] Housing assembly, wherein the housing assembly is the housing assembly described above;

[0019] A stator assembly, the stator assembly including a coil disposed in the receiving space and fixedly connected to the housing assembly;

[0020] The oscillator assembly, in part, is spaced within the coil and elastically connected to the housing assembly. Attached Figure Description

[0021] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0022] Figure 1 A schematic diagram of the structure of a linear motor according to an embodiment of the present invention is shown.

[0023] Figure 2 for Figure 1 Exploded view of the structure of a linear motor;

[0024] Figure 3 for Figure 1 Schematic diagram of the structure of the intermediate oscillator assembly;

[0025] Figure 4 for Figure 1 Schematic diagram of the middle stator assembly;

[0026] Figure 5 for Figure 1 A schematic diagram of the structure after the middle end cap has been punched;

[0027] Figure 6 for Figure 1 A schematic diagram of the structure after the middle end cap is bent.

[0028] Figure 7 for Figure 1 A schematic diagram of the three-dimensional structure of the middle end cap after processing;

[0029] Figure 8 for Figure 1 A schematic diagram of the mating structure of the middle end cap and the main shell.

[0030] The labels in the attached diagram are as follows:

[0031] 100. Linear motor;

[0032] 10. End cap; 11. Base plate; 12. Side plate; 13. First positioning body; 14. Connecting part; 15. First mating part; 151. Snap-fit ​​groove; 16. Second mating part; 161. Snap-fit ​​protrusion; 17. Second positioning body;

[0033] 20. Main shell; 21. Second positioning groove;

[0034] 31. Coil; 32. Support;

[0035] 41. Magnet; 42. First yoke; 43. Second yoke; 44. Spring;

[0036] 50. FPCB;

[0037] 60. Accommodation space. Detailed Implementation

[0038] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0039] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0040] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0041] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations.

[0042] With the development and application of haptic feedback mechanisms in electronic products, linear motors, as the actuators for haptic feedback, are becoming increasingly diversified in structure and function. Linear motors are widely used in mobile phones and other electronic devices due to their fast response and excellent vibration feedback. Currently, the housing and bottom shell of linear motors are box-shaped parts. For parts with small sidewall dimensions, machining is currently difficult, reducing processing efficiency.

[0043] Figure 1 A schematic diagram of the structure of a linear motor according to an embodiment of the present invention is shown. Figure 7 for Figure 1 A schematic diagram of the three-dimensional structure of the mid-end cap after processing. (See diagram below.) Figure 1 and 7 As shown, this utility model proposes a housing assembly and a linear motor 100. The housing assembly of this utility model includes a main housing and an end cap 10. The main housing has an opening at at least one end. The end cap 10 is integrally formed by punching and bending. The end cap 10 includes a base plate 11, a connecting part 14, and a side plate 12. The base plate 11 is connected to the side plate 12 through the connecting part 14. The connecting part 14 is bent and the side plate 12 is arranged around the outer periphery of the base plate 11. The end cap 10 covers the opening and is fixed to the main housing to form an accommodating space 60.

[0044] According to the technical solution of this utility model, the side plate 12 is arranged around the outer periphery of the base plate 11, and since the end cover 10 is formed by punching and bending, the side plate 12 can be connected and arranged with the base plate 11 through simple deformation processing, which improves the applicability and efficiency of processing. In addition, the accommodating space 60 is used to accommodate the stator assembly and oscillator assembly of the linear motor 100, and the end cover 10 is used to seal the opening.

[0045] Specifically, in this embodiment, only initial punching or cutting of the end cap 10 is required, followed by bending processes using the integrally structured base plate 11 and side plate 12 to achieve the desired positional arrangement between the side plate 12 and the base plate 11. In the prior art, the height of the side plate 12 needs to be considered for box-shaped parts; if the height is too small, bending the side plate 12 becomes inconvenient. However, in this embodiment…

[0046] The method allows for easy bending of the side plate 12 due to the integrally formed base plate 11 and side plate 12.

[0047] In some embodiments of this utility model, such as Figure 4 As shown, the main body shell is cylindrical, with openings at both ends, and two end caps 10 respectively covering the two openings. In this embodiment, two end caps 10 are provided, and the two end caps 10 respectively covering the two openings can seal the accommodating space 60, ensuring the independence of the accommodating space 60.

[0048] In some embodiments of this utility model, the side plate 12 is welded to the bottom plate 11. In this embodiment, welding is used to fix the side plate 12 and the bottom plate 11 after bending, which can enhance the structural strength and stability between the two.

[0049] In some embodiments of this utility model, a first positioning groove is formed on the outer surface of the main body shell 20, such as... Figure 5 , 6 As shown in Figure 7, the end cap 10 also includes a first positioning body 13, which is formed by a portion of the side plate 12 protruding away from the bottom plate 11 and inserted into the first positioning groove. In this embodiment, the extension direction of the first positioning body 13 is the same as the extension direction of the first positioning groove, both being parallel to the arrangement direction of the two end caps 10, and the first positioning groove extends to its end along its own extension direction, with the first positioning bodies 13 of the two end caps 10 respectively inserted into both ends of the first positioning groove.

[0050] Specifically, in this embodiment, the first positioning body 13 can limit the end cover 10 as a whole along the circumferential direction of the main body shell 20 to ensure the positional accuracy and reliability of the end cover 10.

[0051] In some embodiments of this utility model, such as Figure 1 As shown, a second positioning groove 21 is formed on the outer surface of the main body shell 20, such as Figure 5 , 6 As shown in Figure 7, the end cap 10 also includes a second positioning body 17, which is formed by a partial protrusion of the side plate 12 away from the bottom plate 11. The second positioning body 17 is inserted into the second positioning groove 21, and the first positioning body 13 is disposed opposite to the second positioning body 17. In this embodiment, the extension direction of the second positioning body 17 is the same as the extension direction of the second positioning groove 21, both parallel to the arrangement direction of the two end caps 10, and the second positioning groove 21 extends to its end along its own extension direction. The second positioning bodies 17 of the two end caps 10 are respectively inserted into the two ends of the second positioning groove 21.

[0052] Specifically, in this embodiment, the second positioning body 17 can limit the end cover 10 as a whole along the circumferential direction of the main body shell 20. In conjunction with the structure of the first positioning body 13 of the upper end cover 10, the positional accuracy and reliability of the end cover 10 are further guaranteed.

[0053] In some embodiments of this utility model, such as Figure 5 , 6As shown in Figure 7, the two ends of the side plate 12 protrude away from the bottom plate 11, forming a first mating part 15 and a second mating part 16, respectively. The first mating part 15 and the second mating part 16 are connected and together form a second positioning body 17. In this embodiment, the first mating part 15 and the second mating part 16 are located at both ends of the side plate 12 along its own extension direction. When the end cover 10 is closed, they together form the second positioning body 17 and are inserted into the second positioning groove 21. This makes the enclosure structure of the end cover 10 more stable when closed, improving the reliability and stability of the end cover 10.

[0054] In some embodiments of this utility model, such as Figure 5 , 6 As shown in Figure 7, one of the first mating part 15 and the second mating part 16 is provided with a snap-fit ​​groove 151, and the other is provided with a snap-fit ​​protrusion 161. When the side plate 12 is closed, the snap-fit ​​groove 151 and the snap-fit ​​protrusion 161 engage. In this embodiment, the snap-fit ​​groove 151 and the snap-fit ​​protrusion 161 can achieve a snap-fit ​​operation, thereby ensuring the enclosure stability and fixing performance when the end cover 10 is closed. In addition, in this embodiment, the snap-fit ​​structure achieves connection through the shape matching of the snap-fit ​​protrusion 161 and the snap-fit ​​groove 151. The connection process is simple and convenient; it only requires aligning the snap-fit ​​protrusion 161 and the snap-fit ​​groove 151. No additional fasteners or tools are required, which greatly simplifies the installation process and improves work efficiency.

[0055] Specifically, in other embodiments of this utility model, the first mating part 15 may also be provided with a snap-fit ​​protrusion on one side of the side plate 12 extending direction, and the second mating part 16 may be provided with a snap-fit ​​groove 151 on one side of the side plate 12 extending direction. This also enables the snap-fit ​​groove 151 and the snap-fit ​​protrusion 161 to snap into each other when the side plate 12 is closed, and also ensures the enclosure stability and fixing performance when the end cover 10 is closed.

[0056] In some embodiments of this utility model, such as Figure 5 , 6 As shown in Figure 7, the snap-fit ​​groove 151 has an opening and a bottom. Along the direction from the opening to the bottom, the size of the snap-fit ​​groove 151 gradually increases in a first direction, which is the extension direction of the second positioning body 17. In this embodiment, the above-mentioned arrangement ensures that after the snap-fit ​​protrusion 161 and the snap-fit ​​groove 151 are engaged, the snap-fit ​​protrusion 161 is less likely to dislodge from the snap-fit ​​groove 151, thereby further improving the stable connection performance between the snap-fit ​​groove 151 and the snap-fit ​​protrusion 161, and ensuring the stable connection performance between the first mating part 15 and the second mating part 16.

[0057] Specifically, in this embodiment, the protrusion 161 does not need to enter the slot 151 from the depth direction of the slot 151. It only needs to enter the slot 151 from the side to achieve the snap-fit ​​between the slot 151 and the protrusion 161.

[0058] In some embodiments of this utility model, such as Figure 5 As shown, the connecting part 14 is used to connect the base plate 11 and the side plate 12. In this embodiment, the end cap 10 is first punched or cut to achieve the purpose of integral molding of the side plate 12, the base plate 11, the first positioning body 13, the first mating part 15, and the second mating part 16. Figure 6 As shown, after punching or cutting, the connecting part 14 needs to be bent so that the side plate 12 abuts against the bottom plate 11, and the side plate 12 and the bottom plate 11 are arranged perpendicularly. Figure 7 As shown, the end cap 10 is then enclosed by the side plate 12 and placed on the outer periphery of the base plate 11, thereby realizing the three-dimensional structure of the end cap 10.

[0059] Among them, the first mating part 15 and the second mating part 16 can engage with each other when the side plate 12 is surrounded, thereby forming the second positioning body 17. The first positioning body 13 and the second positioning body 17 can respectively engage with the first positioning groove and the second positioning groove 21 to realize the fixation and positioning of the end cover 10 and the main shell 20.

[0060] Furthermore, in this embodiment, such as Figure 1 As shown, there are two main body shells 20, which are arranged and connected along the vibration direction. Two end caps 10 are respectively connected to opposite ends of the two main body shells 20 along the vibration direction.

[0061] Furthermore, in this embodiment, such as Figure 8 As shown, when the end cap 10 mates with the main body shell 20, the tolerance can be adjusted by referring to the actual assembly requirements and using equipment tooling, through the gaps at the snap-fit ​​groove 151 and snap-fit ​​protrusion 161, to achieve near-zero fit.

[0062] In some embodiments of this utility model, the end cap 10 and the main body shell are connected by welding. In this embodiment, welding melts and fuses the metal materials together through the conduction of heat energy, thereby forming a larger contact area on the connection surface. This connection method has better firmness and shock resistance, and can withstand heavy loads, vibrations or temperature changes without loosening. The welding connection can significantly enhance the structural strength and stability between the main body shell 20 and the end cap 10.

[0063] This utility model also proposes a linear motor 100, such as Figure 1 and 2 As shown, it includes:

[0064] Housing assembly, the housing assembly being the aforementioned housing assembly;

[0065] A stator assembly, including a coil 31, which is disposed in a receiving space 60 and fixedly connected to the housing assembly;

[0066] The oscillator assembly, some of which are spaced within the coil 31 and elastically connected to the housing assembly.

[0067] By using the linear motor 100 in this embodiment, the stator assembly and the oscillator assembly are respectively disposed in the accommodating space 60, and the coil 31 is fixedly connected to the housing assembly, the oscillator assembly is elastically connected to the housing assembly, and the oscillator assembly is located inside the coil 31. When the coil 31 is energized, it can generate a magnetic field and cause the oscillator assembly to vibrate along the vibration direction, thereby realizing the vibration effect of the linear motor 100.

[0068] The side plate 12 is arranged around the outer periphery of the base plate 11. Since the end cover 10 is formed by punching and bending, the side plate 12 can be connected and arranged with the base plate 11 through simple deformation processing, which improves the applicability and efficiency of processing. In addition, the accommodating space 60 is used to accommodate the stator assembly and oscillator assembly of the linear motor 100, and the end cover 10 is used to seal the open end.

[0069] Furthermore, such as Figure 4 As shown, in this embodiment, the stator assembly also includes a bracket 32, the coil 31 is connected to the bracket 32, and the bracket 32 ​​is connected to the inner surface of the main body shell 20.

[0070] Furthermore, such as Figure 3 As shown, in this embodiment, the oscillator assembly includes a magnet 41, a first yoke 42, and a second yoke 43. Two first yokes 42 are provided. In this embodiment, the magnet 41 has a cylindrical structure, and the two first yokes 42 are arranged on opposite sides of the magnet 41 along its radial direction. Two second yokes 43 are provided, arranged on opposite sides of the magnet 41 along its axial direction. The magnet 41 is glued to each of the two second yokes 43, and the two second yokes 43 are welded to each of the two first yokes 42 along their axial directions.

[0071] Specifically, in this embodiment, the coil 31 is spaced between the magnet 41 and the first yoke 42. The first yoke 42 is spaced along the circumference of the magnet 41, and the space between them is used for the bracket 32 ​​to connect the coil 31 and the main body shell 20.

[0072] Specifically, in this embodiment, the two second magnetic yokes 43 are elastically connected to the housing assembly, thereby ensuring that the second magnetic yoke 43, the first magnetic yoke 42 and the magnet 41 can vibrate along the vibration direction, wherein the vibration direction is parallel to the axial direction of the magnet 41.

[0073] Furthermore, such as Figure 3 As shown, in this embodiment, the oscillator assembly further includes two spring plates 44. One spring plate 44 is sandwiched between one end cap 10 and the main body shell 20, and the other spring plate 44 is sandwiched between another end cap 10 and the main body shell 20. The two spring plates 44 are respectively connected to two second magnetic yokes 43.

[0074] Specifically, in this embodiment, the above-mentioned arrangement enables the vibration amount of the spring 44 along the vibration direction to be equal to or less than the height of the side plate 12, thus ensuring the effective vibration of the spring 44 in the vibration direction.

[0075] Furthermore, such as Figure 2 As shown, in this embodiment, an FPCB50 (Flexible Printed Circuit Board) is provided on the base plate 11. One end of the FPCB50 is electrically connected to an external power supply, and the other end of the FPCB50 is electrically connected to the coil 31.

[0076] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A housing assembly applied to a linear motor, characterized by, include: The main shell, wherein at least one end of the main shell is open; An end cap is integrally formed by punching and bending. The end cap includes a base plate, a connecting part, and a side plate. The base plate is connected to the side plate through the connecting part. The connecting part is bent and the side plate is arranged around the outer periphery of the base plate. The end cap covers the opening and is fixed to the main shell to form an accommodating space.

2. The housing assembly of claim 1, wherein, The main shell is cylindrical, and both ends of the main shell are provided with openings, and the two end caps are respectively sealed to the two openings.

3. The housing assembly of claim 1, wherein, The side plate is welded and fixed to the bottom plate.

4. The housing assembly of claim 1, wherein, The outer side of the main shell has a first positioning groove, and the end cap also includes a first positioning body. The first positioning body is formed by a portion of the side plate protruding away from the bottom plate and is inserted into the first positioning groove.

5. The housing assembly of claim 4, wherein, The outer side of the main shell has a second positioning groove, and the end cap also includes a second positioning body. The second positioning body is formed by a portion of the side plate protruding away from the bottom plate. The second positioning body is inserted into the second positioning groove, and the first positioning body and the second positioning body are arranged opposite to each other.

6. The housing assembly of claim 5, wherein, The two ends of the side plate protrude away from the bottom plate to form a first mating part and a second mating part, respectively. The first mating part and the second mating part are connected and together form the second positioning body.

7. The housing assembly of claim 6, wherein, One of the first mating part and the second mating part is provided with a snap-fit ​​groove, and the other is provided with a snap-fit ​​protrusion. When the side plate is closed, the snap-fit ​​groove and the snap-fit ​​protrusion engage with each other.

8. The housing assembly of claim 7, wherein, The snap-fit ​​groove has an opening and a bottom. Along the direction from the opening to the bottom, the size of the snap-fit ​​groove gradually increases in a first direction, which is the extension direction of the second positioning body.

9. The housing assembly of any one of claims 1-8, wherein, The end cap and the main shell are connected by welding.

10. A linear motor characterized by comprising: include: A housing assembly, wherein the housing assembly is the housing assembly according to any one of claims 1-9; A stator assembly, the stator assembly including a coil disposed in the receiving space and fixedly connected to the housing assembly; The oscillator assembly, in part, is spaced within the coil and elastically connected to the housing assembly.

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