Linear oscillator

Abstract

The invention discloses a linear oscillator which comprises a machine shell and an oscillation device installed in the machine shell, and the oscillation device comprises a mover module and a coil winding module. One face of the machine shell is an open face, and compared with a conventional closed machine shell which can generate redundant noise in a fully-closed space, the open structure can effectively reduce noise generated by movement of an oscillation structure in the machine shell. The bottom of the framework is provided with the conductive elastic sheet, a damping effect can be provided when the mover module generates oscillation while the conductive effect is completed, and after the structure in the casing is fixed, the conductive elastic sheet presses down a part of space, so that an elastic space is formed between the coil winding module and the external structure of the casing. When the rotor module generates linear oscillation, a part of oscillation force is transmitted to the lower part, and meanwhile, the spring can play a part of damping effect, so that the normal use of an external structure is prevented from being influenced when the vibration sense of the oscillator is relatively strong.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a linear oscillator. Background Art

[0002] The linear oscillation motor is a driving structure that uses the action of electromagnetic force to make the direction of movement of the motor a linear vibration. Specifically, the linear oscillation motor is operated by an electromagnet and a guide rail. When current passes through the electromagnet, the electromagnet will generate a magnetic field, which will interact with the permanent magnet on the guide rail to generate electromagnetic force. The position change of the electromagnetic force will change the direction of movement of the motor. When the electromagnetic force changes from the N level of the electromagnet to the S level, the electromagnet will generate linear vibration along the guide rail. After the conventional linear oscillation motor is powered on, it will generate a high-frequency oscillation output. At the same time, due to the large vibration frequency, it is easy to cause excess vibration to the parts of the product wrapped outside the oscillation motor that do not need to oscillate, which is not conducive to the user experience. At the same time, the vibration structure of the existing linear oscillation motor is usually set in a fully enclosed casing, and in such a fully enclosed space, excess noise will be generated, making the customer feel extremely poor. The conventional noise reduction method is to add sound insulation material around the vibrator, but this method will increase the weight of the vibrator, which will affect its oscillation effect and result in poor oscillation effect. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is that the oscillation structure of the linear oscillator in the prior art is disposed in a fully enclosed casing, which will generate unnecessary noise, thereby providing a linear oscillator.

[0004] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0005] A linear oscillator comprises a casing and an oscillating device installed in the casing; the oscillating device comprises a mover module and a coil winding module suitable for driving the mover module to perform linear motion; one side of the casing is an open side; the mover module is arranged close to the open side of the casing, and comprises a mover core installed in the casing through a leaf spring and a magnetic steel connected to the bottom of the mover core; the coil winding module is installed below the mover module, and comprises an iron core fixed in the casing and a skeleton sleeved on the iron core, and a coil is wound on the skeleton; the coil winding module also comprises a conductive spring, and the conductive spring is installed at the bottom of the skeleton, and one end of the conductive spring is connected to the end of the coil.

[0006] Furthermore, the casing includes a fixed shell and two end plates respectively installed at both ends of the fixed shell, the top surface of the fixed shell is open, the bottom surface of the fixed shell is provided with a through slot, and the iron core is fixed on the through slot.

[0007] Furthermore, two conductive spring sheets are provided, and the two conductive spring sheets are respectively provided on two opposite sides of the bottom of the frame and extend out from two opposite sides of the through slot.

[0008] Furthermore, there are two leaf springs, which are respectively installed on opposite ends of the casing, a mounting hole is provided in the middle of the leaf spring, the movable core is connected to the mounting holes of the two leaf springs, and is suitable for performing linear motion between the two leaf springs.

[0009] Furthermore, the magnetic steel is fixed to the bottom of the movable core and is located between the movable core and the iron core, and a gap is provided between the magnetic steel and the iron core.

[0010] Furthermore, the housing is provided with positioning grooves on the side walls and bottom wall near both ends thereof, the two opposite ends of the leaf spring are mounted on the positioning grooves of the corresponding side walls, and the bottom of the leaf spring is mounted on the positioning grooves of the corresponding bottom wall.

[0011] Furthermore, the leaf spring is welded and fixed to the corresponding positioning groove.

[0012] Furthermore, the iron core is in an E-shape, and the frame is sleeved on a protrusion in the middle of the E-shaped iron core and is located in two grooves of the E-shaped iron core.

[0013] Furthermore, upwardly extending stoppers are provided at opposite ends of the through slot, and the iron core is fixedly installed between the two stoppers.

[0014] Furthermore, a limiting groove is provided on at least one side of the bottom of the frame, and the end of the coil is suitable for extending out of the limiting groove.

[0015] The technical solution of the present invention has the following advantages:

[0016] 1. The linear oscillator provided by the present invention has one side of the casing as an open surface. Compared with the problem of redundant noise generated in a fully enclosed space in a conventional closed casing, the open structure of the present application can solve this problem well and effectively reduce the noise generated by the movement of the oscillating structure inside the casing. A conductive spring is arranged at the bottom of the skeleton. While completing the conductive function, it can also provide a shock absorbing effect when the mover module oscillates. When the structure inside the casing is fixed, the installation of the conductive spring will press down a part of the space, so that an elastic space will be formed between the coil winding module and the external structure of the casing. When the mover module generates linear oscillations, a part of the oscillation force will be transmitted to the bottom, and the spring can play a part of the shock absorbing effect to avoid affecting the normal use of the external structure when the oscillator is vibrating strongly.

[0017] 2. The linear oscillator provided by the present invention has a split-type casing design, which can improve the convenience of installing the oscillation device; compared with the design in which an opening is set on the top surface of the fixed shell and a through groove is set on the bottom surface, the sound generated by the oscillation device when moving in a fully enclosed shell is bounced back and forth by the inner wall of the shell to generate excess noise, the present application places the oscillation device in a non-enclosed space, and the sound generated during the oscillation movement is transmitted and dispersed outward through the opening and the through groove, and no excess noise is generated, which can greatly improve the user experience.

[0018] 3. The linear oscillator provided by the present invention has two conductive springs, which are respectively arranged on opposite sides of the bottom of the frame and extend from opposite sides of the through slot. In this way, the two springs can disperse the excess vibration generated by the movement of the oscillating device, and prevent the vibration from being transmitted to the parts of the external product that do not need vibration and affecting the use effect of the product.

[0019] 4. The linear oscillator provided by the present invention has two leaf springs, which are respectively installed at opposite ends of the housing, and a mounting hole is provided in the middle of the leaf spring. The mover core is connected to the mounting holes of the two leaf springs and is suitable for linear motion between the two leaf springs. With such a configuration, the mover core can be limited by the mounting holes on the leaf springs, and the movement of the mover core can be guided and ensured to move in a linear manner.

[0020] 5. In the linear oscillator provided by the present invention, the magnetic steel is fixed to the bottom of the moving core and is located between the moving core and the iron core, and a gap is provided between the magnetic steel and the iron core. In this way, the gap between the magnetic steel and the iron core can ensure smooth movement of the iron core and the moving core.

[0021] 6. The linear oscillator provided by the present invention has positioning grooves on the side walls and bottom walls of the housing near both ends, and the two opposite ends of the leaf spring are installed on the positioning grooves of the corresponding side walls, and the bottom of the leaf spring is installed on the positioning groove of the corresponding bottom wall. In this way, the leaf spring can be effectively limited by the positioning grooves set on multiple sides to avoid displacement of the leaf spring caused by the movement of the iron core and the mover core, thereby causing adverse effects on the linear oscillation movement.

[0022] 7. In the linear oscillator provided by the present invention, the leaf spring is welded and fixed on the corresponding positioning groove, which can ensure the connection strength between the leaf spring and the housing, thereby ensuring the movement stability of the moving core.

[0023] 8. The linear oscillator provided by the present invention has a limiting groove on at least one side of the bottom of the frame, and the end of the coil is suitable for extending from the limiting groove. In this way, the extended limit can be limited by the limiting groove to prevent the coil from being displaced by the oscillation device, and to avoid affecting the movement of the coil and affecting the connection stability between it and the conductive spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A three-dimensional structural diagram of a linear oscillator provided in an embodiment of the present invention;

[0026] Figure 2 An exploded diagram of a linear oscillator provided by an embodiment of the present invention;

[0027] Figure 3 It is a three-dimensional structural diagram of the skeleton in the invention.

[0028] Explanation of the accompanying drawings: 1. Casing; 2. Fixed shell; 3. Stopper; 4. Through slot; 5. Positioning slot; 6. End plate; 7. Leaf spring; 8. Mounting hole; 9. Mover core; 10. Magnetic steel; 11. Iron core; 12. Skeleton; 13. Limiting slot; 14. Coil; 15. Conductive spring. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] like Figure 1-3 A linear oscillator shown includes a housing 1 and an oscillating device installed in the housing 1; the oscillating device includes a mover module and a coil 14 winding module suitable for driving the mover module to perform linear motion; one side of the housing 1 is an open side; the mover module is arranged close to the open side of the housing 1, and includes a mover core 9 installed in the housing 1 through a leaf spring 7 and a magnetic steel 10 connected to the bottom of the mover core 9; the coil 14 winding module is installed below the mover module, and includes an iron core 11 fixed in the housing 1 and a skeleton 12 sleeved on the iron core 11, and the coil 14 is wound on the skeleton 12; the coil 14 winding module also includes a conductive spring 15, which is installed at the bottom of the skeleton 12, and one end of which is connected to the end of the coil 14.

[0034] This linear oscillator has one side of the casing 1 as an open surface. Compared with the conventional closed casing 1 that generates excess noise in a fully enclosed space, the open structure of the present application can solve this problem well and effectively reduce the noise generated by the movement of the oscillating structure inside the casing 1. A conductive spring 15 is set at the bottom of the skeleton 12. While completing the conductive function, it can also provide a shock-absorbing effect when the mover module oscillates. When the structure inside the casing 1 is fixed, the installation of the conductive spring 15 will press down a part of the space, so that an elastic space will be formed between the coil 14 winding module and the external structure of the casing 1. When the mover module generates linear oscillations, a part of the oscillation force will be transmitted to the bottom, and the spring can also play a part of the shock-absorbing effect to avoid affecting the normal use of the external structure when the oscillator is vibrating strongly.

[0035] In this embodiment, the housing 1 includes a fixed shell 2 and two end plates 6 respectively installed at both ends of the fixed shell 2. The top surface of the fixed shell 2 is an opening, and the bottom surface of the fixed shell 2 is provided with a through slot 4, and the iron core 11 is fixed on the through slot 4. Specifically, the two end plates 6 are detachably installed on the two opposite ends of the fixed shell 2. Such a configuration can improve the convenience of installing the oscillation device; at the same time, the design of the top surface of the fixed shell 2 is provided with an opening and the bottom surface is provided with a through slot 4. Compared with the design that the sound generated by the oscillation device when moving in a fully enclosed shell is bounced back and forth by the inner wall of the shell to generate excess noise, the present application places the oscillation device in a non-enclosed space, and the sound generated during the oscillation movement is conducted and dispersed outward through the opening and the through slot 4, and no excess noise is generated, which can greatly improve the user experience. At the same time, no noise influence will be generated when the wide-band oscillator is adjusted.

[0036] In this embodiment, two conductive springs 15 are provided, and the two conductive springs 15 are respectively provided on opposite sides of the bottom of the frame 12, and respectively extend from opposite sides of the through slot 4. In this way, the two springs can disperse the redundant vibration generated by the movement of the oscillating device, and prevent the vibration from being transmitted to the parts of the external product that do not need vibration and affecting the use effect of the product.

[0037] In this embodiment, two leaf springs 7 are provided, and the two leaf springs 7 are respectively installed at opposite ends of the housing 1. A mounting hole 8 is provided in the middle of the leaf spring 7. The mover core 9 is connected to the mounting holes 8 of the two leaf springs 7 and is suitable for linear motion between the two leaf springs 7. In this arrangement, the mover core 9 can be limited by the mounting holes 8 on the leaf spring 7, and the movement of the mover core 9 can be guided and ensured to move linearly.

[0038] In this embodiment, the magnetic steel 10 is a square magnetic steel 10, and the two ends are respectively N-level and S-level. Specifically, the magnetic steel 10 is fixed to the bottom of the movable core 9 and is located between the movable core 9 and the iron core 11, and a gap is provided between the magnetic steel 10 and the iron core 11. In this way, the gap between the magnetic steel 10 and the iron core 11 can ensure smooth movement of the iron core 11 and the movable core 9.

[0039] In this embodiment, the side walls and bottom walls of the housing 1 near both ends are provided with positioning grooves 5, and the two opposite ends of the leaf spring 7 are installed on the positioning grooves 5 of the corresponding side walls, and the bottom of the leaf spring 7 is installed on the positioning grooves 5 of the corresponding bottom wall. In this way, the leaf spring 7 can be effectively limited by the positioning grooves 5 set on multiple sides, so as to avoid the displacement of the leaf spring 7 caused by the movement of the iron core 11 and the movable core 9, thereby causing adverse effects on the linear oscillation movement. Specifically, the leaf spring 7 is welded and fixed on the corresponding positioning groove 5. In this way, the connection strength between the leaf spring 7 and the housing 1 can be guaranteed, thereby ensuring the movement stability of the movable core 9.

[0040] In this embodiment, the iron core 11 is in an E-shape, and the frame 12 is sleeved on a protrusion in the middle of the E-shaped iron core 11 and is located in two grooves of the E-shaped iron core 11 .

[0041] In this embodiment, stoppers 3 extending upward are provided at opposite ends of the through slot 4 , and the iron core 11 is fixedly installed between the two stoppers 3 .

[0042] In this embodiment, the frame 12 is specifically an insulating frame 12, and limiting grooves 13 are provided on the opposite side edges of the bottom of the insulating frame 12, and the ends of the coil 14 are suitable for extending from the limiting grooves 13. In this way, the extended limit can be limited by the limiting grooves 13, so as to prevent the coil 14 from being displaced by the oscillation device, and to prevent the movement of the coil 14 from affecting the connection stability between the coil 14 and the conductive spring 15.

[0043] Working principle: the coil 14 winding module consists of an E-shaped iron core 11, an insulating frame 12, a wound coil 14 and two conductive springs 15. The E-shaped iron core 11 is fixed on the casing 1, and the insulating frame 12 is placed in the middle of the E-shaped iron core 11. The enameled wire is wound on the frame 12 to form two wire ends of the coil 14, which are respectively fixedly connected to the two conductive springs 15, and are energized with an external power supply through the conductive springs 15, thereby forming an electromagnetic coil 14 structure. Since the current is alternating current, when the current flows in one direction, the coil 14 winding module will generate an electromagnetic coil 14, such as N-level, at this time, the magnetic steel 10 under the corresponding mover module will produce a phenomenon of attraction and repulsion with it (when the same poles of two magnets approach each other, due to the mutual repulsion of the magnetic field, the two magnets are like a force that separates them, and the proximity of two different poles will attract each other); when the direction of the flowing current changes, the magnetic pole of the electromagnetic coil 14 of the coil 14 winding module will change, that is, from N-level to S-level, and the magnetic steel 10 under the corresponding mover module will produce a phenomenon of attraction and repulsion with it. In this way, due to the change of the magnetic pole of the electromagnetic coil 14, the mover module completes a linear back and forth motion between the two leaf springs 7. When a high-frequency alternating current is provided, the magnetic pole of the electromagnetic coil 14 also changes accordingly, and the mover module also quickly performs a high-frequency linear motion, so that the mover module produces a high-frequency linear oscillation.

[0044] In summary, this linear oscillator, in which one side of the casing 1 is open, has a problem of generating unnecessary noise in a fully enclosed space compared to a conventional closed casing 1. The open structure of the present application can solve this problem well and effectively reduce the noise generated by the movement of the oscillating structure inside the casing 1. A conductive spring 15 is arranged at the bottom of the skeleton 12. While completing the conductive function, it can also provide a shock absorbing effect when the mover module oscillates. When the structure inside the casing 1 is fixed, the installation of the conductive spring 15 will press down a part of the space, thereby forming an elastic space between the coil 14 winding module and the external structure of the casing 1. When the mover module generates linear oscillations, a part of the oscillation force will be transmitted to the bottom, and the spring can play a part of the shock absorbing effect to avoid affecting the normal use of the external structure when the oscillator is vibrating strongly.

[0045] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A linear oscillator, characterized in that: The invention comprises a housing (1) and an oscillating device installed in the housing (1); the oscillating device comprises a moving submodule and a coil (14) winding module suitable for driving the moving submodule to perform linear motion; one side of the housing (1) is an open side; the moving submodule is arranged close to the open side of the housing (1), and comprises a moving submodule (9) installed in the housing (1) via a leaf spring (7) and a magnetic steel (10) connected to the bottom of the moving submodule (9); the coil (14) winding module is installed below the moving submodule, and comprises an iron core (11) fixed in the housing (1) and a frame (12) sleeved on the iron core (11), and a coil (14) is wound on the frame (12); the coil (14) winding module also comprises a conductive spring (15), and the conductive spring (15) is installed at the bottom of the frame (12), and one end of the conductive spring (15) is connected to the end of the coil (14).

2. The linear oscillator according to claim 1, characterized in that The casing (1) comprises a fixed shell (2) and two end plates (6) respectively mounted at two ends of the fixed shell (2); the top surface of the fixed shell (2) is open, the bottom surface of the fixed shell (2) is provided with a through slot (4), and the iron core (11) is fixed on the through slot (4).

3. The linear oscillator according to claim 2, characterized in that: Two conductive spring sheets (15) are provided, and the two conductive spring sheets (15) are respectively provided on two opposite sides of the bottom of the frame (12) and respectively extend from two opposite sides of the through slot (4).

4. The linear oscillator according to claim 1, characterized in that The leaf spring (7) is provided with two pieces, and the two leaf springs (7) are respectively installed at opposite ends in the housing (1); a mounting hole (8) is provided in the middle of the leaf spring (7); the movable core (9) is connected to the mounting holes (8) of the two leaf springs (7) and is suitable for performing linear motion between the two leaf springs (7).

5. The linear oscillator according to claim 4, characterized in that: The magnetic steel (10) is fixed to the bottom of the movable core (9) and is located between the movable core (9) and the iron core (11); a gap is provided between the magnetic steel (10) and the iron core (11).

6. The linear oscillator according to claim 1, characterized in that: The housing (1) is provided with positioning grooves (5) on the side walls and bottom walls near both ends thereof, the two opposite ends of the leaf spring (7) are mounted on the positioning grooves (5) of the corresponding side walls, and the bottom of the leaf spring (7) is mounted on the positioning grooves (5) of the corresponding bottom wall.

7. The linear oscillator according to claim 6, characterized in that The leaf spring (7) is welded and fixed on the corresponding positioning groove (5).

8. The linear oscillator according to claim 1, characterized in that The iron core (11) is in an E-shape, and the frame (12) is sleeved on a protrusion in the middle of the E-shaped iron core (11) and is located in two grooves of the E-shaped iron core (11).

9. The linear oscillator according to claim 2, characterized in that: Stoppers (3) extending upward are provided at opposite ends of the through slot (4), and the iron core (11) is fixedly mounted between the two stoppers (3).

10. The linear oscillator according to claim 1, characterized in that: A limiting groove (13) is provided on at least one side of the bottom of the frame (12), and the end of the coil (14) is suitable for extending out of the limiting groove (13).

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