Linear vibrator

Abstract

The utility model discloses a linear vibrator. The linear vibrator comprises a cylindrical shell with an internal accommodating space, a vibrator assembly, a stator assembly, an elastic piece, a circuit board and a T-shaped insertion piece, the elastic piece is in a plate shape and comprises an inner ring, an outer ring and an elastic arm spirally connected between the inner ring and the outer ring. The stator assembly is fixed in the shell, the circuit board is fixed outside the shell, and the vibrator assemblies are arranged in the stator assembly in a penetrating manner at intervals; at least three through holes are evenly formed in the positions, matched with the inserting pieces, of the upper side and the lower side of the axial direction of the shell in the circumferential direction at intervals, the radial length of the inserting pieces is larger than the radial depth of the through holes, and the inserting pieces are inserted into and stretch out of the through holes to clamp and fix the outer ring to the shell. And the vibrator assembly is elastically suspended in the accommodating space by connecting and fixing the inner ring. The linear vibrator is simple in structure, convenient to assemble and good in vibration performance.

Description

Technical Field

[0001] This utility model relates to the field of vibration motor technology, and in particular to a linear vibrator. Background Technology

[0002] With the development of electronic technology, portable consumer electronics products have gradually occupied the global consumer market, such as mobile phones, handheld game consoles, and multimedia entertainment devices. These electronic products generally use linear vibration motors for haptic feedback, such as incoming call notifications on mobile phones and vibration feedback on game consoles. To meet such a wide range of applications, the requirements for miniaturization and vibration performance of linear vibration motors are becoming increasingly stringent.

[0003] The existing vibration motor achieves vibration feedback by using a rotor and an eccentric hammer. The working principle is that the energized coil rotates in a magnetic field, causing the rotor to rotate. The rotor then drives the eccentric hammer to rotate, and the centrifugal force generated by the rotating eccentric hammer is transmitted to the electronic product carrier to produce the vibration sensation perceived by humans. However, due to the limitations of the traditional assembly method of various components of the vibration motor, more fixtures and processes are required, resulting in complex assembly processes and high manufacturing costs.

[0004] Therefore, there is an urgent need for a new type of vibration motor with a simple structure and easy assembly to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a linear vibrator with a simple structure, convenient assembly, and good vibration feedback performance. The specific technical solution is as follows:

[0006] A linear vibrator includes a cylindrical housing with an internal accommodating space, an oscillator assembly, a stator assembly, and an elastic element; the elastic element is plate-shaped and includes an inner ring, an outer ring, and a helical elastic arm connecting the inner and outer rings; the stator assembly is fixed to the housing and also includes a T-shaped insert; at least three through holes are evenly spaced on the circumferentially circumferentially adapted to the insert on the upper and lower sides of the housing, the insert is inserted into and extends out of the through holes to secure the outer ring to the housing, and the oscillator assembly is elastically suspended within the accommodating space by connecting and fixing the inner ring.

[0007] Preferably, the housing includes an upper shell and a lower shell with one end open, the upper shell and the lower shell fastening together to form the accommodating space, the upper shell and the lower shell having a symmetrical structure within the accommodating space, each including a circular bottom wall and a side wall; a first annular stepped portion protrudes from the internal joint of the bottom wall and the side wall, the upper surface of the first annular stepped portion having at least two bosses evenly spaced; the thickness of the elastic element is adapted to the height of the bosses; the bottom surface of the through hole is flush with the upper surface of the bosses.

[0008] Preferably, the boss extends from the bottom surface of the through hole; the circumferential width of the through hole outside the side wall is greater than that inside, the circumferential width of the boss is less than the circumferential width inside the through hole, and the radial length of the boss is less than the radial width of the first annular step portion.

[0009] Preferably, the outer ring is placed on the upper surface of the first annular step portion, and a first notch is provided on the outer peripheral edge of the outer ring to fit the boss; the outer ring is clamped between the insert piece and the first annular step portion.

[0010] Preferably, the upper shell and the lower shell respectively axially recess a second annular step portion from their open ends, and an annular mounting groove is axially recessed along the inner wall surface of the side wall; the inner diameter of the first annular step portion is greater than the inner diameter of the second annular step portion; the outer diameter of the mounting groove is less than the inner diameter of the second annular step portion; the second annular step portion communicates with the mounting groove in the radial direction; the outer diameter of the outer ring respectively fits the outer diameter of the first annular step portion and the inner diameter of the second annular step portion.

[0011] Preferably, the outer wall surfaces of the open ends of the upper shell and the lower shell are axially symmetrically recessed with flat grooves, and two through grooves are provided on the open end surface where the flat grooves are located.

[0012] Preferably, the open end surfaces of the upper shell and the lower shell are provided with a complementary concave-convex fitting structure.

[0013] Preferably, the stator assembly includes a circular magnetic conductive ring and coils that are symmetrically separated up and down; the magnetic conductive rings are respectively embedded in the annular mounting grooves, and the coils are respectively fixed on the second annular step portions; the axial width of the magnetic conductive ring is greater than the axial width of the coil.

[0014] Preferably, the magnetic conductive rings are respectively provided with second notches corresponding to the positions of the through grooves.

[0015] Preferably, the axial cross-section of the oscillator assembly is in the shape of "zhong", and includes a permanent magnet, magnetic conductive sheets symmetrically fixed on both sides of the permanent magnet, mass blocks symmetrically fixed on both sides of the magnetic conductive sheets, and connecting shafts extending out of both sides of the mass blocks and connected and fixed to the inner ring; the oscillator assemblies are evenly spaced and penetrate through the coils; the coils are respectively arranged corresponding to the permanent magnet and the magnetic conductive sheets.

[0016] Compared with the prior art, this utility model provides a linear vibrator with a simple structure, convenient assembly, and good vibration feedback performance. The upper and lower shells are directly used to fix the stator assembly, reducing the stator fixing structure. The vibrator assembly is suspended in the accommodating space by inserting inserts through the through holes on the upper and lower shells to secure the elastic element, simplifying the assembly process of the vibrator assembly. The arrangement of the dual coils corresponding to the permanent magnets helps to generate a stronger magnetic field to achieve high electromagnetic force of the vibrator. The magnetic ring covering the coils and the magnetic sheets attached to both sides of the permanent magnets both serve to concentrate the magnetic lines of force and prevent magnetic leakage, thereby generating higher driving force and improving vibration feedback performance. Attached Figure Description

[0017] Figure 1 This is a 3D diagram of a linear vibrator.

[0018] Figure 2 This is an exploded view of a linear vibrator structure.

[0019] Figure 3 It is along Figure 1 Cross-sectional view of the first embodiment of the AA line.

[0020] Figure 4 This is a cross-sectional view of the upper shell of the third embodiment of the linear vibrator.

[0021] Figure 5 It is along Figure 3 Assembly diagram of the third embodiment of the BB line.

[0022] Figure 6 This is an exploded view of the insert and elastic element in the fourth embodiment.

[0023] Figure 7 It is along Figure 1 Cross-sectional view of the third embodiment of the linear vibrator of AA.

[0024] in:

[0025] 1-Shell; 10-Upper shell; 10'-Lower shell; 100-Bottom wall; 101-Side wall; 102-First annular stepped portion; 103-Boss; 104-Through hole; 105-Slit; 106-Second annular stepped portion; 107-Mounting groove; 108-Flat groove; 109-Through groove; 110-Protrusion; 111-Recess;

[0026] 3-Oscillator assembly; 30-Mass block; 31-Permanent magnet; 32-Magnetic conductive sheet; 33-Connecting shaft;

[0027] 4-Stator assembly; 40-Coil; 41-Magnetic ring; 410-Second notch;

[0028] 5 - Elastic member; 50 - Inner ring; 51 - And outer ring; 52 - Elastic arm; 53 - First notch;

[0029] 6 - Insertion piece;

[0030] 7 - Circuit board. Specific embodiments

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Refer to the structure of a linear vibrator according to the first embodiment of the present invention Figures 1 to 3 , which includes a cylindrical housing 1 with an internal accommodation space (not labeled), a vibrator assembly 3, a stator assembly 4, a plate-shaped elastic member 5, a T-shaped insertion piece 6, and a circuit board 7. Among them, at least three through holes 104 are respectively and evenly spaced on the circumferences of the upper and lower sides of the housing 1 axially for fitting the insertion piece 6. The vibrator assembly 3 is elastically suspended in the accommodation space through a fixed connection with the elastic member 5. The stator assembly 3 is fixed in the housing 1, and the circuit board 7 is fixed outside the housing 1.

[0033] The axial cross-section of the vibrator assembly 3 is in the shape of "zhong", and includes a permanent magnet 30, magnetic conductive sheets 31 symmetrically fixed on both sides of the permanent magnet 30, mass blocks 32 symmetrically fixed on both sides of the magnetic conductive sheets 31, and connecting shafts 33 extending from both sides of the mass blocks 32 and fixedly connected to the inner ring. The vibrator assembly 3 is elastically suspended in the accommodation space through the connection and fixation of the connecting shafts 33 and the elastic member 5. In this embodiment, the permanent magnet 30, the magnetic conductive sheets 31, and the mass blocks 32 are circularly arranged, and through holes (not labeled) corresponding to the center positions are provided for fitting with the connecting shafts 33. The connecting shafts 33 are integrally cylindrical, and the connecting shafts 33 pass through the through holes to connect and fix the vibrator assembly 3 into one body, and glue is applied at the joints of the permanent magnet 30, the magnetic conductive sheets 31, the mass blocks 32, and the connecting shafts 33, which helps to ensure the stability of the overall assembly of the vibrator assembly 3 and guarantee the vibration performance.

[0034] The stator assembly 4 includes an annular coil 40 and a magnetic ring 41 arranged symmetrically on the upper and lower sides. The coil 40 and the magnetic ring 41 are fixed on the inner surface of the housing, and the magnetic ring 41 is attached to and covers the outside of the coil 40. The oscillator assembly 3 is evenly spaced through the coil 40. The coil 40 is respectively arranged with the permanent magnet 30 and the magnetic sheet 31. The permanent magnet 30 and the magnetic sheet 31 together form a cylindrical magnetic field generator. In the magnetic field of the magnetic field generator, the coil 40 is alternately supplied with current of different frequencies through the oscillation circuit. As a result, the elastic element 5 connected to the upper and lower parts of the oscillator assembly 3 resonates selectively and vibrates. The oscillator assembly 3 vibrates up and down in the center line direction within the accommodating space of the housing 1. When the power supply to the coil 40 is stopped, the oscillator assembly 3 is reset by the rebound force of the elastic element 5.

[0035] The housing 1 includes an upper shell 10 and a lower shell 10', both open at one end. The upper shell 10 and the lower shell 10' are fastened together to form an accommodating space. The structures of the upper shell 10 and the lower shell 10' within the accommodating space are arranged symmetrically from top to bottom. Specifically, since the structures of the upper shell 10 and the lower shell 10' are symmetrically arranged from top to bottom in this embodiment, the names and designations of the internal structures of the lower shell 10' are the same as those of the upper shell 10. The internal structure of the lower shell 10' does not need to be shown separately. In this embodiment, the upper shell 10 and the lower shell 10' each include a circular bottom wall 100, a side wall 102, and a through wall disposed near the bottom wall 100. The through hole 104 on the side wall 101 is shaped to match the shape of the insert 6, such that the outer width of the through hole 104 is greater than the inner width. The T-shaped insert 6 facilitates setting the insertion depth of the insert 6 in the through hole 104, preventing over-insertion of the insert 6 or radial displacement of the vibrator during operation. The radial length of the insert 6 is greater than the radial depth of the through hole 104. Thus, the insert 6 inserts into and extends out of the through hole 104, securing the elastic members 5 connecting the two sides of the vibrator assembly 3 to the side walls 101 of the upper shell 10 and the lower shell 10', respectively. For details, please refer to the structural cross-sectional view of the upper shell 10. Figure 4A first annular stepped portion 102 is provided at the inner joint of the bottom wall 100 and side wall 101 of the upper shell 10 and the lower shell 10'. The first annular stepped portion 102 is used to support the elastic member 5. The first annular stepped portion 102 and the bottom wall 100 form a recess to make room for the deformation of the elastic member 5, that is, to make room for the reciprocating motion of the oscillator assembly 3. At least two bosses 103 are evenly spaced on the upper surface of the first annular stepped portion 102. A through hole 104 is provided above the first annular stepped portion 102. The bottom surface (not shown) of the through hole 104 near the bottom wall 100 is flush with the upper surface of the boss 103. The thickness of the elastic member 5 is adapted to the height of the boss 103. Thus, the elastic member 5 is clamped between the insert 6 and the first annular stepped portion 102 without gaps. The upper shell 10 and the lower shell 10' are respectively axially recessed from the opening end (not shown) of their side wall 101 with a second annular stepped portion 106. The second annular stepped portion 106 is axially recessed along the inner wall surface of the side wall 101 with an annular mounting groove 107. The inner diameter of the first annular stepped portion 102 is larger than the inner diameter of the second annular stepped portion 106. The outer diameter of the mounting groove 107 is smaller than the inner diameter of the second annular stepped portion 106. The upper shell 10 and the lower shell 10' are axially symmetrically recessed from the outer wall surface of their opening ends with planar grooves 108. Two through grooves 109 are provided at the opening end face of the planar grooves 108 for passing through the power leads (not shown) of the two coils 40. The circumferential direction of the magnetic ring 41 corresponds to the two coils 40. The through slot 109 is provided with a second notch 410, and the magnetic rings 41 are respectively embedded in the mounting slots 107. The coil 40 is fixed on the second annular step 106. Since the second annular step 106 is connected to the mounting slot 107 in its radial direction, the magnetic rings 41 surround and cover the outer surface of the coil 40. Since the axial depth of the mounting slot 107 is greater than the axial depth of the second annular step 106, the axial width of the magnetic rings 41 is greater than the axial width of the coil 40. After the upper shell 10 and the lower shell 10' are fastened together, the circuit board 7 is fixed in the planar groove 108 on the outer wall of the shell 1. The power lead of the coil 40 passes through the through slot 109 from the second notch 410 and is electrically connected to the circuit board 7.

[0036] The elastic element 5 includes an inner ring 50, an outer ring 51, and a spirally connected elastic arm 52 between the inner ring 50 and the outer ring 51. The outer diameter of the outer ring 51 is adapted to the outer diameter of the first annular stepped portion 102 and the inner diameter of the second annular stepped portion 106, respectively. The outer periphery of the outer ring 51 is fitted with a first notch 53 on the boss 103. The boss 103 can provide a precise positioning point to realize the circumferential positioning of the elastic element 5 with the upper shell 10 and the lower shell 10', respectively, reducing assembly errors and preventing the elastic element 5 from shifting during the operation of the vibrator after assembly. The outer ring 50 is connected and fixed to the connecting shaft 33 of the oscillator assembly 3. The outer ring 51 is placed on the upper surface of the first annular stepped portion 102. The insert 6 is inserted and protrudes through the through hole 104 to secure the outer ring 51 to the housing 1. At this time, the inner ring 50 is connected and fixed to the oscillator assembly, and the outer ring 51 is secured between the insert 6 and the first annular stepped portion 102. Thus, the oscillator assembly 3 is elastically suspended in the accommodating space through its connecting shaft 33 and the inner ring 50. The elastic arm 52 deforms with the reciprocating motion of the oscillator assembly 3 and provides the restoring force for the oscillator assembly 3 to reset.

[0037] The structure of a linear vibrator according to the second embodiment of this utility model is as follows: Figures 4 to 6 As shown, as an alternative to the first embodiment, the housing 1 is integrally injection molded, and the boss 103 extends from the bottom surface of the through hole 104, which facilitates the design and manufacture of the mold (not shown). The circumferential width of the through hole 104 on the outer side of the side wall 101 is greater than the circumferential width on the inner side, the circumferential width of the boss 103 is less than the circumferential width on the inner side of the through hole, and the radial length of the boss 103 is less than the radial width of the first annular step portion 102. This helps the insert 6 to fully lock the outer ring 51 of the elastic member 5, making the locking of the elastic member 5 more stable and ensuring the vibration performance of the vibrator.

[0038] The structure of a linear vibrator according to the third embodiment of this utility model is as follows: Figure 1 , 2 As shown in Figure 4, based on the first embodiment, since the internal structures of the upper shell 10 and the lower shell 10' are symmetrically arranged, in order to distinguish the upper shell 10 and the lower shell 10', the opening end faces of the upper shell 10 and the lower shell 10' are designed with a complementary concave-convex fit structure. Preferably, at least two protrusions 110 are evenly spaced on the opening end face of the upper shell 10, and corresponding concave portions 111 are provided on the opening end face of the lower shell 10' corresponding to the protrusions 110; conversely, at least two concave portions are evenly spaced on the opening end face of the upper shell 10, and protrusions are provided on the opening end face of the lower shell 10' corresponding to the two concave portions. The complementary concave-convex fit structure can not only play a pre-positioning role in the assembly of the upper shell 10 and the lower shell 10', but also play a foolproof role. At the same time, it can also prevent the upper shell 10 and the lower shell 10' from shifting during the operation of the vibrator, thereby affecting the stability of the shell 1 and reducing the vibration performance.

[0039] The structure of a linear vibrator according to the fourth embodiment of this utility model is as follows: Figure 1 As shown, as an alternative to the third embodiment, since the internal structures of the upper shell 10 and the lower shell 10' are symmetrically arranged, a cutout 105 is provided on the outer periphery of the bottom wall 100 of the upper shell 10 to distinguish the upper shell 10 and the lower shell 10' and to prevent mistaken identity.

[0040] The structure of a linear vibrator according to the fifth embodiment of this utility model is as follows: Figure 7 As shown, as an alternative to the first embodiment, the connecting shaft 33 of the oscillator assembly 3 consists of two separate and symmetrically arranged cylinders. The center of the mass blocks 32 on both sides is provided with through holes (not shown) to match the shape of the connecting shaft 33. The connecting shaft 33 is inserted through the through holes of the mass blocks 32 on both sides and abuts against the magnetic conductive sheet 31. By applying glue to the joints of the permanent magnet 30, the magnetic conductive sheet 31, the mass blocks 32 and the connecting shaft 33, the overall stability of the oscillator assembly 3 is improved, ensuring vibration performance. At the same time, the permanent magnet 30 and the magnetic conductive sheet 31 are integrally bonded, ensuring that the permanent magnet 30 and the magnetic conductive sheet 31 have a larger volume, so that the magnetic field generated by the oscillator assembly 3 is larger. Moreover, there are no through holes in its center, so the magnetic circuit of the oscillator assembly 3 will not be affected by the through holes of the connecting shaft 33, thereby helping the vibrator to have a larger driving force and achieve a better vibration effect.

[0041] The assembly steps of the utility model linear vibrator are as follows:

[0042] 1) First, complete the assembly of the oscillator assembly 3, and then weld and fix the elastic element 5 to the upper and lower sides of the oscillator assembly 3 respectively;

[0043] 2) First, embed the magnetic ring 41 into the upper shell 10 and the lower shell 10' respectively. Then, attach the coil 40 to the magnetic ring 41 and fix it into the upper shell 10 and the lower shell 10' respectively. Finally, apply glue to the joint of the coil 40, the magnetic ring 41, the upper shell 10 and the lower shell 10' respectively.

[0044] 3) Fasten the upper shell 10 and lower shell 10' containing the stator assembly 4 from the upper and lower sides of the vibrator assembly 3; perform ultrasonic welding at the joint of the upper shell 10 and lower shell 10' to complete the assembly of the shell 1;

[0045] 4) Insert the insert 6 into the through hole 104 and apply glue to the joint between the through hole 104 and the insert 6 to achieve a fixed connection between the elastic element 5 and the housing 1.

[0046] 5) Fix the circuit board 7 to the outside of the housing 1 and electrically connect the coil to complete the vibrator assembly.

[0047] The linear vibrator of this invention uses a split upper and lower housing 1 to directly fix the stator assembly 4, reducing the fixing structure of the stator assembly 4. The oscillator assembly 3 is suspended in the accommodating space by directly inserting the insert 6 into the through holes 104 at the top and bottom of the housing 1 to lock the elastic element 5, simplifying the assembly process of the oscillator assembly 3 and making the assembly of the vibrator more convenient. The arrangement of the double coils 40 corresponding to the permanent magnets 30 helps to generate a stronger magnetic field to achieve high electromagnetic force of the vibrator. The magnetic ring 41 covering the coils 40 and the magnetic sheets 31 attached to both sides of the permanent magnets 30 both play the role of concentrating magnetic lines of force and preventing magnetic leakage, thereby generating higher driving force and improving vibration feedback performance.

[0048] It should be noted that in the description of this utility model, the terms "upper", "lower", "front", "rear", "left", "horizontal direction", "vertical direction", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A linear vibrator, comprising a cylindrical housing with an internal accommodating space, an oscillator assembly, a stator assembly, an elastic element, and a circuit board; the elastic element is plate-shaped, including an inner ring, an outer ring, and a helical elastic arm connecting the inner and outer rings; the stator assembly is fixed inside the housing, the circuit board is fixed outside the housing, and the oscillator assembly is spaced through the stator assembly, characterized in that, It further includes a T-shaped insert; at least three through holes are evenly spaced and circumferentially adapted to the inserts on the upper and lower sides in the axial direction of the housing respectively. The radial length of the insert is greater than the radial depth of the through hole. The insert is inserted into and protrudes from the through hole to clamp the outer ring to the housing. The oscillator assembly is elastically suspended in the accommodation space by connecting and fixing the inner ring.

2. The linear vibrator according to claim 1, characterized in that, The housing includes an upper shell and a lower shell with one end open. The upper shell and the lower shell are buckled to form the accommodation space. The structures of the upper shell and the lower shell in the accommodation space are symmetrically arranged up and down, and respectively include a circular bottom wall and a side wall; a first annular stepped portion is convexly provided at the inner joint of the bottom wall and the side wall. At least two bosses are evenly spaced on the upper surface of the first annular stepped portion; the thickness of the elastic member is adaptively set to the height of the boss; the bottom surface of the through hole is flush with the upper surface of the boss.

3. The linear vibrator according to claim 2, characterized in that, The boss extends from the bottom surface of the through hole; the circumferential width of the through hole outside the side wall is greater than that inside the side wall. The circumferential width of the boss is less than the circumferential width inside the through hole. The radial length of the boss is less than the radial width of the first annular stepped portion.

4. The linear vibrator according to claim 2 or 3, characterized in that, The outer ring is placed on the upper surface of the first annular stepped portion. A first notch is provided on the outer peripheral edge of the outer ring to adapt to the boss; the outer ring is clamped between the insert and the first annular stepped portion.

5. The linear vibrator according to claim 4, characterized in that, The upper shell and the lower shell respectively axially recess a second annular stepped portion from their open ends. The second annular stepped portion axially recesses an annular installation groove along the inner wall surface of the side wall; the inner diameter of the first annular stepped portion is greater than the inner diameter of the second annular stepped portion; the outer diameter of the installation groove is less than the inner diameter of the second annular stepped portion; the second annular stepped portion communicates with the installation groove in its radial direction; the outer diameter of the outer ring is respectively adapted to the outer diameter of the first annular stepped portion and the inner diameter of the second annular stepped portion.

6. The linear vibrator according to claim 5, characterized in that, The outer wall surfaces of the upper shell and the lower shell axially and symmetrically recess flat grooves from their open ends. Two through grooves are provided on the open end surface where the flat groove is located.

7. The linear vibrator according to claim 5, characterized in that, The open end surfaces of the upper shell and the lower shell are provided with a complementary concave-convex mating structure.

8. The linear vibrator according to claim 6, characterized in that, The stator assembly includes a circular magnetic conductive ring and a coil that are symmetrically and separately arranged up and down; the magnetic conductive rings are respectively embedded in the annular installation grooves, and the coils are respectively fixed on the second annular stepped portions; the axial width of the magnetic conductive ring is greater than the axial width of the coil.

9. The linear vibrator according to claim 8, characterized in that, The magnetic conductive rings are respectively provided with second notches corresponding to the positions of the through grooves.

10. The linear vibrator according to claim 9, characterized in that, The axial cross-section of the oscillator assembly is in the shape of "middle", and includes a permanent magnet, magnetic conductive sheets symmetrically fixed on both sides of the permanent magnet, mass blocks symmetrically fixed on both sides of the magnetic conductive sheets, and connecting shafts that protrude from both sides of the mass blocks and are connected and fixed to the inner ring; the oscillator assembly is evenly spaced and passes through the coils; the coils are respectively arranged corresponding to the permanent magnet and the magnetic conductive sheets.

Images