阅读说明：本技术 一种线性振动器 (Linear vibrator ) 是由 王海童 邱士嘉 于 2019-12-31 设计创作，主要内容包括：本发明提供了一种线性振动器,包括壳体、磁体以及弹片,所述弹片为平弹片,所述弹片包括固定部、振动部和振动臂,所述振动臂在与固定部连接的端部附近形成弯折部,所述振动臂的筋宽小于所述振动部的筋宽以及小于所述固定部的宽度。将弹片固定于两支撑块中间,节省振动空间,大大降低制程工艺装配难度,有利于实现产品的轻薄化设计及提高制程良率；通过设置多个磁体且分别放置于线圈的四周,磁体上下端分别固定于盆架和不导磁极片之间,与弹片通过焊接方式连接,大大提高了磁路利用率缩短产品的响应时间,提升振感,同时提高磁路整体的可靠性强度,解决磁路在环境可靠性试验中的脱落问题。(The invention provides a linear vibrator which comprises a shell, a magnet and an elastic sheet, wherein the elastic sheet is a flat elastic sheet, the elastic sheet comprises a fixing part, a vibrating part and a vibrating arm, a bending part is formed near the end part connected with the fixing part of the vibrating arm, and the rib width of the vibrating arm is smaller than that of the vibrating part and than that of the fixing part. The elastic sheet is fixed between the two support blocks, so that the vibration space is saved, the assembly difficulty of the manufacturing process is greatly reduced, the light and thin design of the product is facilitated, and the yield of the manufacturing process is improved; through setting up a plurality of magnets and placing respectively around the coil, the lower extreme is fixed in respectively between basin frame and the non-magnetic pole piece about the magnet, passes through the welding mode with the shell fragment and is connected, has improved the response time that the magnetic circuit utilization ratio shortened the product greatly, promotes the sense of shaking, improves the holistic reliability intensity of magnetic circuit simultaneously, solves the problem that drops of magnetic circuit in the environmental reliability test.)

1. The utility model provides a linear vibrator, includes casing, magnet and shell fragment (4), its characterized in that: the shell fragment (4) are flat shell fragments, shell fragment (4) include with fixed part (42) that the casing is connected, with vibration portion that the magnet is connected and connect fixed part (42) with vibration arm (44) of vibration portion, vibration arm forms kink (441) near the tip of being connected with fixed part (42), the muscle width of vibration arm (44) is less than the muscle width of vibration portion and is less than the width of fixed part (42).

2. The linear vibrator of claim 1, wherein: the number of fixed parts (42) is two, and two fixed parts (42) are located the both ends of vibration portion, and two fixed parts (42) set up for vibration portion symmetry.

3. The linear vibrator of claim 1, wherein: the bending part (441) of the vibration arm (44) is transversely arranged, longitudinally arranged or obliquely arranged, and the bending part (441) is wave-shaped or fold-line-shaped.

4. The linear vibrator of claim 1, wherein: the vibrating arms (44) are symmetrically arranged relative to the vibrating portion, the number of the vibrating arms (44) is four, two vibrating arms (44) are connected with one fixing portion (42), the other two vibrating arms (44) are connected with the other fixing portion (42), and the two vibrating arms (44) connected with the same fixing portion (42) are arranged in parallel or in arc symmetry.

5. The linear vibrator of claim 1, wherein: vibration portion includes two relative first vibration portions (43) that set up, two set up through-hole (41) between first vibration portion (43), the one end of vibration arm (44) links to each other with the outside of first vibration portion (43), first vibration portion (43) with set up logical groove (45) between vibration arm (44), the other end of vibration arm (44) links to each other with the middle part of fixed part (42), fixed part (42) are located between two vibration arms (44).

6. The linear vibrator of claim 5, wherein: the vibrating portion further comprises two second vibrating portions (46) which are oppositely arranged, and the second vibrating portions (46) are connected with the vibrating arms (44) or connected with the first vibrating portions (43) to form an integral structure.

7. The linear vibrator of claim 6, wherein: the first vibration part (43) has the same shape as the second vibration part (46), and the shape thereof is rectangular or arc-shaped.

8. The linear vibrator of claim 1, wherein: the vibrating part and the fixing part (42) are both annular, and the vibrating part and the fixing part (42) are arranged concentrically.

9. A linear vibrator according to any one of claims 1-7, characterized by: the shell is provided with two positioning parts, the positioning parts are provided with positioning grooves (32), and the fixing parts (42) are inserted in the positioning grooves (31).

10. The linear vibrator of claim 9, wherein: an opening part is arranged at one end of the positioning groove (31), the other end of the positioning groove is sealed, the fixing part (42) is inserted into the positioning groove (31) from the opening part, and two side faces of the fixing part (42) are in contact with the inner wall of the positioning groove (31).

Technical Field

The invention relates to the field of linear vibration equipment, in particular to a linear vibrator.

Background

1. Compared with a linear vibrator applied to an electronic product, the linear vibrator in the existing market has higher and stricter requirements on vibration sense, and in order to realize higher performance, the linear vibrator is often higher in magnetic induction intensity and larger in vibration space design, so that the product is larger in appearance size, more difficult to assemble by using a Z-shaped elastic sheet, the product process yield is reduced, and meanwhile, the linear vibrator occupies larger assembly space of a vehicle-mounted screen complete machine;

2. the linear vibrator has larger design size, so that the magnetic gap is too small on one side in the assembling process between the magnetic circuit assembly and the stator assembly, and the friction and the collision occur in the vibrating process to generate noise;

3. the elastic element of the through groove linear vibrator is fixed with the basin frame and the upper and lower shells in a welding mode, the adjustable space of the vibrator structure is small, the requirement on the dimensional precision of materials is high, the cost of a single die is high, and when the performance of a product needs to be changed, high die repairing cost is often generated.

Disclosure of Invention

The invention aims to overcome the defects of the traditional technology and provide a linear vibrator, the structure of which is beneficial to realizing the light and thin design of products, the installation space is saved, the process difficulty is reduced, the product process yield is improved, and the die repairing cost caused by material design change is reduced.

The aim of the invention is achieved by the following technical measures: the utility model provides a linear vibrator, includes casing, magnet and shell fragment, the shell fragment is flat shell fragment, the shell fragment include with the casing be connected the fixed part, with the vibration portion that the magnet is connected and connect the fixed part with the vibration arm of vibration portion, the vibration arm forms the kink near the tip of being connected with the fixed part, the rib width of vibration arm is less than the rib width of vibration portion and be less than the width of fixed part.

Preferably, the number of the fixing portions is two, the two fixing portions are located at two ends of the vibrating portion, and the two fixing portions are symmetrically arranged relative to the vibrating portion.

Preferably, the bending portion of the vibrating arm is transversely arranged, longitudinally arranged or obliquely arranged, and the bending portion is in a wave shape or a fold line shape.

Preferably, the vibrating arms are symmetrically arranged relative to the vibrating portion, the number of the vibrating arms is four, two of the vibrating arms are connected with one of the fixing portions, the other two vibrating arms are connected with the other fixing portion, and the two vibrating arms connected with the same fixing portion are arranged in parallel or in arc symmetry.

As a preferred scheme, the vibration portion includes two relative first vibration portions that set up, two set up the through-hole between the first vibration portion, the one end of vibration arm links to each other with the outside of first vibration portion, first vibration portion with set up logical groove between the vibration arm, the other end of vibration arm links to each other with the middle part of fixed part, the fixed part is located between two vibration arms.

Preferably, the vibrating portion further includes two second vibrating portions disposed opposite to each other, and the second vibrating portions are connected to the vibrating arms or connected to the first vibrating portions to form an integral structure.

Preferably, the first vibrating portion has the same shape as the second vibrating portion, and the shape of the first vibrating portion is rectangular or arc-shaped.

Preferably, the vibrating portion and the fixing portion are both annular, and the vibrating portion and the fixing portion are arranged concentrically.

As a preferred scheme, the shell is provided with two positioning parts, the positioning parts are provided with positioning grooves, and the fixing parts are inserted in the positioning grooves.

As a preferred scheme, one end of the positioning groove is provided with an opening part, the other end of the positioning groove is sealed, the fixing part is inserted into the positioning groove from the opening part, and two side surfaces of the fixing part are in contact with the inner wall of the positioning groove.

As a preferred scheme, the magnetic pole piece structure further comprises a coil, the magnet is located on the periphery of the coil, the non-magnetic pole pieces are respectively arranged between the magnet and the elastic pieces, and the non-magnetic pole pieces are respectively connected with the magnet and the elastic pieces.

As a preferred scheme, the basin stand further comprises a basin stand, wherein the magnet comprises a first magnet, a second magnet, a third magnet and a fourth magnet, the first magnet, the second magnet, the third magnet and the fourth magnet are connected with the basin stand, and a mass block connected with the basin stand is arranged on the basin stand.

As a preferred scheme, still include the iron core, the lower part of iron core is equipped with first recess, the casing includes the inferior valve, the inferior valve is equipped with inside bellied boss, the boss is pegged graft and is made iron core and inferior valve fixed in first recess.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the advantages that:

the vibrating parts at the two ends of the elastic sheet are bent by adopting the arc lines, the structure with two symmetrical parts is compared with the traditional spiral flat elastic sheet, the length of the vibrating arm of the elastic sheet is longer in the same space range, the risk of high-cycle fatigue fracture of the elastic sheet in the vibrating process due to stress concentration is reduced, the reliability life strength of the elastic sheet is improved, and meanwhile stable vibration of the elastic sheet in the one-dimensional vibrating direction is favorably realized.

The width of the rib of the vibrating arm is smaller than that of the vibrating part, so that the width of the rib of the middle part of the elastic sheet is larger than that of the two ends, the welding area with the vibrator ends is increased, the reliability intensity is improved, and meanwhile, the magnetic circuit part is matched.

This shell fragment structure is whole to buckle for both ends symmetry and the rib is wide thin, is favorable to shell fragment vibration in-process stress release, and middle part rib width is greater than both ends part rib width, has solved because of both ends part rib width is thin, and the K value is less, can't provide the problem of enough holding power for the oscillator part, has solved the polarization problem that traditional flat shell fragment leads to because of the rib width nonconformity simultaneously and has reduced the not enough problem of holding power that the rib width leads to for reducing stress.

The shell fragment has the second vibration portion as an extension structure, and this second vibration portion can replace the single connected mode of both ends magnet and basin frame, realizes the lug connection of both ends magnet and shell fragment, is that both ends magnet is fixed in between basin frame and the shell fragment, and to a great extent has reduced the risk that both ends magnet drops at the vibration in-process, improves whole magnetic circuit utilization ratio simultaneously, promotes the wholeness ability of product.

The elastic sheet is arranged to be the flat elastic sheet and is fixed between the two positioning parts, so that compared with the traditional Z-shaped elastic sheet, the vibration space is saved, the assembly difficulty of the manufacturing process is greatly reduced, the light and thin design of a product is facilitated, and the yield of the manufacturing process is improved;

the positioning groove is formed in the positioning part, and one end of the elastic sheet is inserted into the positioning groove, so that the problem that the elastic sheet deviates in the X/Y axis direction is solved, the positioning is accurate, the vibration is more stable, and the reliability of a product is improved;

the plurality of magnets are arranged and are respectively placed around the coil, the upper end and the lower end of each magnet are respectively fixed between the basin frame and the non-magnetic pole piece and are connected with the elastic pieces in a welding mode, so that the utilization rate of a magnetic circuit is greatly improved, the response time of a product is shortened, the vibration feeling is improved, the reliability strength of the whole magnetic circuit is improved, and the problem of falling off of the magnetic circuit in an environmental reliability test is solved;

through the boss that is equipped with the location iron core at the casing, the iron core lower extreme is equipped with first recess, and the first recess of iron core is connected with the casing boss and is arranged in the middle of the coil in back, guarantees the concentricity between coil and the casing body, guarantees the magnetic gap precision simultaneously, improves the processing procedure yield of product.

The invention is further described with reference to the following figures and detailed description.

Drawings

Fig. 1 is a schematic diagram of an overall explosion structure of a linear vibrator according to the present invention.

Fig. 2 is a sectional view of a-a direction of a linear vibrator according to the present invention.

Fig. 3 is a schematic sectional view in the direction B-B of a linear vibrator according to the present invention.

Fig. 4 is a schematic diagram of a spring plate structure of a linear vibrator according to the present invention.

Fig. 5 is a schematic view of a housing structure of a linear vibrator according to the present invention.

Fig. 6 is a schematic structural view of a stator assembly of a linear vibrator according to the present invention.

Fig. 7 is a schematic structural view of a magnetic yoke of a linear vibrator according to the present invention.

Fig. 8 is a schematic structural view of a vibrator assembly of a linear vibrator according to the present invention.

Fig. 9 is a schematic diagram of a vibrator structure of a linear vibrator according to the present invention.

Fig. 10 is a schematic view of a core structure of a linear vibrator according to the present invention.

Fig. 11 is a schematic view showing a supporting block structure of a linear vibrator according to the present invention.

FIG. 12 is a schematic view of a non-magnetic pole piece structure of a linear vibrator according to the present invention.

Fig. 13 is a schematic view showing a magnet structure of a linear vibrator according to the present invention.

Fig. 14 is a structural view of a frame of a linear vibrator according to the present invention.

Fig. 15 is a schematic view of a spring structure of embodiment 2 of a linear vibrator according to the present invention.

Fig. 16 is a structural schematic diagram of a vibrator assembly of embodiment 2 of a linear vibrator of the present invention.

Fig. 17 is a schematic view of a spring structure of embodiment 3 of the linear vibrator of the present invention.

Fig. 18 is a schematic view of a spring structure of embodiment 4 of a linear vibrator according to the present invention.

Fig. 19 is a schematic view of a spring structure of embodiment 5 of a linear vibrator according to the present invention.

Fig. 20 is a schematic diagram of a spring structure of embodiment 6 of the linear vibrator according to the present invention.

Fig. 21 is a schematic view of a spring structure of embodiment 7 of a linear vibrator according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.