CN218335704U

CN218335704U - Small-sized linear motor with complete machine vibration

Info

Publication number: CN218335704U
Application number: CN202222477346.3U
Authority: CN
Inventors: 朱忠磊
Original assignee: Ravens Shenzhen Technology Co Ltd
Current assignee: Ravens Shenzhen Technology Co Ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-01-17
Anticipated expiration: 2032-09-19

Abstract

A small linear motor with complete machine vibration comprises a shell, a stator part, a fixed shaft, a guide post, an elastic part, a magnetic ring and a coil, wherein the stator part is fixedly arranged in the shell; the fixed shaft is fixedly arranged in the shell and is positioned in the stator piece; the guide post is movably sleeved on the fixed shaft and can move along the axial direction of the fixed shaft; the elastic pieces are respectively arranged at two ends of the guide pillar, one end of each elastic piece is abutted against the shell, and the other end of each elastic piece is abutted against the guide pillar; the magnetic ring is fixedly sleeved on the guide post and is positioned in the stator piece; the coil is arranged on the outer wall of the stator piece along the circumferential direction; when the coil is electrified with working current to generate an induction magnetic field, the magnetic ring and the guide post reciprocate along the axial direction of the fixed shaft under the action of magnetic force, so that the motor can vibrate integrally. The utility model has the characteristics of simple structure, size are less to do benefit to the equipment. Furthermore, the utility model discloses be equipped with the elastic component buffering in the casing, sound when it can reduce the operation makes the motor operation more silent.

Description

Small-sized linear motor with complete machine vibration

[ technical field ] A

The utility model relates to a motor field, in particular to small-size linear electric motor of complete machine vibration.

[ background ] A method for producing a semiconductor device

With the development of economy, electronic products, such as mobile phones, electric toothbrushes, handheld fans, etc., are also rapidly developed, and the products are increasingly required to have the characteristics of lightness, thinness and miniaturization while pursuing high quality. The miniaturization of products is more and more demanding on the miniaturization of the original devices. The existing small-sized motor has a complex structure, and if the internal structure design is unreasonable, the motor is difficult to be miniaturized, so that the application scene of the motor is restricted. In addition, the noise is too big when current motor moves, also can influence the use and experience. Therefore, it is a trend of small motors to miniaturize the motors and reduce the sound during operation.

[ Utility model ] content

The utility model aims at solving the above problem, and provide a simple structure, do benefit to the structure miniaturization, and the small-size linear electric motor of the complete machine vibration of more silence during the operation.

In order to solve the problems, the utility model provides a small linear motor with a vibrating complete machine, which is characterized in that the small linear motor comprises a shell, a stator piece, a fixed shaft, a guide pillar, an elastic piece, a magnetic ring and a coil, wherein the stator piece is fixedly arranged in the shell; the fixed shaft is fixedly arranged in the shell and is positioned in the stator piece; the guide post is movably sleeved on the fixed shaft and can move along the axial direction of the fixed shaft; the elastic pieces are respectively arranged at two ends of the guide post, one end of each elastic piece is abutted against the shell, and the other end of each elastic piece is abutted against the guide post; the magnetic ring is fixedly sleeved on the guide post and is positioned in the stator piece; the coil is arranged on the outer wall of the stator piece along the circumferential direction; when the coil is electrified with working current to generate an induction magnetic field, the magnetic ring and the guide post reciprocate along the axial direction of the fixed shaft under the action of magnetic force, so that the whole motor can vibrate.

Furthermore, a magnetic conductive ring is arranged outside the coil and fixed on the outer wall of the stator piece and/or the inner wall of the shell.

Furthermore, the elastic element is a spring, and is sleeved on the fixed shaft.

Furthermore, the two ends of the guide post are respectively provided with a butting groove extending along the axial direction from the end surface of the guide post, and one end of the elastic piece is arranged in the butting groove and is butted with the guide post.

Furthermore, stepped grooves which are opposite in position are arranged in the shell, each stepped groove comprises a first groove part and a second groove part, and the size of each second groove part is larger than that of each first groove part; two ends of the fixed shaft are respectively inserted into the first groove part; one end of the elastic member is disposed in the second groove portion and abuts against the housing.

Further, the stator part comprises a cylindrical part, an annular groove is formed in the circumferential outer wall of the cylindrical part along the circumferential direction of the cylindrical part, and the coil is arranged in the annular groove.

Furthermore, an annular clamping step is arranged on the circumferential outer wall of the cylindrical part, and the magnetic conductive ring is cylindrical and is clamped at the clamping step and seals the coil between the magnetic conductive ring and the stator part.

Furthermore, the end parts of the two ends of the cylindrical part are respectively provided with a leg part which protrudes along the axial direction, and the leg part is abutted against the shell and forms a movable space for the guide post and the magnetic ring to move back and forth with the shell.

Further, the stator member is made of a plastic material.

The beneficial contributions of the utility model reside in that, it has effectively solved above-mentioned problem. The utility model discloses a small-size linear electric motor of complete machine vibration includes casing, stator spare, fixed axle, guide pillar, elastic component, magnetic ring and coil, and its simple structure, size are less to do benefit to the equipment. Furthermore, the utility model discloses a small-size linear electric motor is equipped with the elastic component buffering in the casing, and it can reduce the sound when moving, makes the motor move more silence.

[ description of the drawings ]

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

The attached drawings are as follows: the magnetic bearing comprises a shell 10, a stepped groove 11, a first groove portion 111, a second groove portion 112, an end cover 12, a barrel 13, a stator member 20, a barrel 21, a leg portion 22, an annular groove 23, a clamping step 24, a fixed shaft 30, a guide post 40, a first central shaft hole 41, a butting groove 42, an elastic member 50, a magnetic ring 60, a coil 70, a magnetic conductive ring 80 and a movable space 90.

[ detailed description ] embodiments

The following examples are further illustrative and supplementary to the present invention and do not constitute any limitation to the present invention.

As shown in fig. 1 to 3, the small linear motor for overall vibration of the present invention includes a housing 10, a stator member 20, a stationary shaft 30, a guide post 40, an elastic member 50, a magnetic ring 60, and a coil 70. Further, it may also include a magnetically permeable ring 80.

The stator 20 is fixed in the housing 10, and the coil 70 is circumferentially disposed on an outer wall of the stator 20 and between the stator 20 and the housing 10. The fixed shaft 30 is axially fixed in the housing 10 and is located in the stator member 20. The guide post 40 is movably sleeved on the fixed shaft 30 and can move along the axial direction of the fixed shaft 30. The elastic members 50 are respectively disposed at both ends of the guide post 40, and one end thereof abuts against the housing 10 and the other end thereof abuts against the guide post 40. The magnetic ring 60 is fixedly sleeved on the guide post 40, is located in the stator 20, and is used for moving under the action of magnetic force in a magnetic field. When the coil 70 is energized with a working current to generate an induced magnetic field, the magnetic ring 60 can move back and forth along the axial direction of the fixed shaft 30 under the action of the magnetic field; when the magnetic ring 60 reciprocates, the guide post 40 reciprocates along with the magnetic ring 60, so that the elastic member 50 can bounce back and forth, and when force is transmitted to the housing 10, the motor as a whole can vibrate.

In order to mount the fixing shaft 30 and the elastic member 50, stepped grooves 11 are oppositely disposed in the housing 10.

The stepped groove 11 includes a first groove portion 111 and a second groove portion 112. Wherein the size of the second groove portion 112 is larger than the size of the first groove portion 111.

The shape of the first groove portion 111 matches the cross-sectional shape of the fixing shaft 30, and is used for inserting the fixing shaft 30. In this embodiment, the fixing shaft 30 is a circular shaft, and the first groove 111 is a circular groove.

The second groove portion 112 is used for disposing the elastic member 50, and the specific shape thereof is not limited. In this embodiment, it is a circular groove.

In this embodiment, the housing 10 includes an end cover 12 and a cylinder 13 connected in an involutory manner, the cylinder 13 is in a cylindrical shape with one open end, and the end cover 12 is involutory connected to the open end of the cylinder 13. The case 10 is formed in a cylindrical shape, so that the structure can be more compact and the appearance can be more compact.

In other embodiments, the housing 10 may be provided in other shapes, which is not limited in particular.

The fixed shaft 30 is in a long shaft shape, and both ends thereof are respectively inserted into the first groove portions 111 to be restricted from moving in the axial direction. The fixed shaft 30 may be rotatable or non-rotatable, and may be specifically configured as needed. In this embodiment, the fixing shaft 30 is a circular shaft with a uniform diameter. In other embodiments, the fixed shaft 30 may be configured in other shapes, such as a square shaft, an elliptical shaft, etc.

The guide post 40 is sleeved on the fixing shaft 30 and can move along the axial direction of the fixing shaft 30. The guide post 40 is provided with a first center shaft hole 41. The shape of the first central axis hole 41 matches the cross-sectional shape of the fixed shaft 30. In this embodiment, the first central axis hole 41 is a circular hole. The size of the first central axis hole 41 should be larger than that of the fixed shaft 30, so that the guide post 40 can move along the fixed shaft 30 when being sleeved on the fixed shaft 30.

To facilitate the installation of the elastic member 50, abutting grooves 42 are respectively formed at both ends of the guide post 40. The abutment groove 42 is formed by an end surface of the guide post 40 extending in the axial direction thereof. The shape of the abutment groove 42 may be set as desired. In this embodiment, the abutting groove 42 is a circular groove, and is coaxially penetrated through the first central axis hole 41.

The shape of the guide post 40 may be set as required, and in this embodiment, it is cylindrical.

The elastic members 50 are respectively provided at both ends of the guide post 40, one end of each of the elastic members is fitted in the second groove portion 112 to abut against the housing 10, and the other end thereof is fitted in the abutting groove 42 to abut against the guide post 40. In this embodiment, the elastic element 50 is a spring, and is sleeved on the fixing shaft 30. In other embodiments, the elastic member 50 may be an elastic member without a spring.

The magnetic ring 60 is adapted to move under the influence of a magnetic field. The magnetic ring 60 is annular and is fixedly sleeved on the guide post 40 and can move synchronously with the guide post 40. The inner shape of the magnetic ring 60 matches the outer shape of the guide post 40, and it can form an interference fit with the guide post 40 to form a fixed connection with the guide post 40. In this embodiment, the magnetic ring 60 is annular.

The stator member 20 is fixed in the housing 10, surrounds the magnetic ring 60, and is spaced from the magnetic ring 60 by a certain distance. The stator member 20 includes a cylindrical portion 21 having a cylindrical shape. The cylindrical portion 21 is provided coaxially with the magnetic ring 60.

Leg portions 22 protruding in the axial direction are provided at both end portions of the cylindrical portion 21. The number and shape of the leg portions 22 may be set as required. The leg portion 22 abuts against an inner end surface of the housing 10, so that the stator member 20 can be supported and fixed in the housing 10. In addition, the leg part 22 can form a moving space 90 between the two ends of the stator 20 and the housing 10 for the guide post 40 and the magnetic ring 60 to reciprocate.

In order to mount the coil 70, an annular groove 23 is provided along the circumferential direction of the outer circumferential wall of the cylindrical portion 21. The coil 70 is disposed in the annular groove 23. The number of grooves may be set as desired. In this embodiment, two spaced annular grooves 23 are provided in the cylindrical portion 21, and a coil 70 is provided in each annular groove 23.

When the coil 70 is energized with an operating current, such as an alternating current, it generates an induced magnetic field; by controlling the working current, the direction of the induced magnetic field can be controlled. The magnetic ring 60 can reciprocate in the induced magnetic field. When the magnetic ring 60 moves, the guide post 40 is driven to reciprocate along the fixed shaft 30, so that the elastic members 50 at the two ends of the guide post 40 bounce back and forth. When the force is transmitted to the housing 10, the motor is vibrated to achieve the use effect.

Further, in order to enhance the magnetic force effect of the magnetic field on the magnetic ring 60, the magnetic ring 80 is further included. The magnetic conductive ring 80 is disposed outside the coil 70 and fixed on the outer wall of the stator member 20 and/or the inner wall of the casing 10.

The magnetic conductive ring 80 is annular and has a height that covers all of the coils 70. In this embodiment, the magnetic conductive ring 80 is made of an iron sheet and is installed on the outer wall of the stator 20.

In order to install the magnetic conductive ring 80, an annular retaining step 24 is provided on the circumferential outer wall of the cylindrical portion 21 of the stator member 20. In this embodiment, the holding steps 24 are located at the proximal end positions of the two ends of the cylindrical portion 21, and the size of the holding steps matches with the size of the magnetic conductive ring 80. The magnetic conductive ring 80 is clamped at the clamping step 24, so as to be clamped between the housing 10 and the stator 20, and the magnetic conductive ring 80 can seal the coil 70 between the magnetic conductive ring 80 and the stator 20.

The utility model discloses a small-size linear electric motor of complete machine vibration simple structure, size are less, and do benefit to the equipment. The utility model discloses a small-size linear electric motor is equipped with the buffering of elastic component 50 in casing 10, and sound when it can reduce the operation makes the motor operation more silent.

While the invention has been described with reference to the above embodiments, the scope of the invention is not limited thereto, and the above components may be replaced with similar or equivalent elements known to those skilled in the art without departing from the concept of the invention.

Claims

1. A small-sized linear motor with a vibrating complete machine is characterized by comprising:

a housing (10);

the stator piece (20) is fixedly arranged in the shell (10);

the fixed shaft (30) is fixedly arranged in the shell (10) and is positioned in the stator piece (20);

the guide post (40) is movably sleeved on the fixed shaft (30) and can move along the axial direction of the fixed shaft (30);

elastic pieces (50) respectively arranged at two ends of the guide post (40), wherein one end of each elastic piece is abutted against the shell (10), and the other end of each elastic piece is abutted against the guide post (40);

the magnetic ring (60) is fixedly sleeved on the guide post (40) and is positioned in the stator part (20);

a coil (70) provided on an outer wall of the stator member (20) in a circumferential direction;

when the coil (70) is electrified with working current to generate an induction magnetic field, the magnetic ring (60) and the guide post (40) reciprocate along the axial direction of the fixed shaft (30) under the action of magnetic force, so that the whole motor can vibrate.

2. The small-sized whole-machine vibration linear motor according to claim 1, wherein a magnetic conduction ring (80) is arranged outside the coil (70), and the magnetic conduction ring (80) is fixed on the outer wall of the stator member (20) and/or the inner wall of the shell (10).

3. The small-sized whole machine vibration linear motor according to claim 1, wherein said elastic member (50) is a spring, which is sleeved on said fixed shaft (30).

4. The small-sized whole machine vibration linear motor according to claim 1,

abutting grooves (42) extending axially from end faces of the guide columns (40) are respectively formed in two ends of each guide column, and one end of each elastic piece (50) is arranged in each abutting groove (42) and abutted against the guide columns (40).

5. A whole-machine-vibration small-sized linear motor according to claim 1, wherein oppositely-positioned stepped grooves (11) are provided in said casing (10), said stepped grooves (11) including a first groove portion (111) and a second groove portion (112), a size of said second groove portion (112) being larger than a size of said first groove portion (111);

two ends of the fixed shaft (30) are respectively inserted into the first groove parts (111);

one end of the elastic member (50) is disposed in the second groove portion (112) and abuts against the housing (10).

6. The small-sized whole machine vibration linear motor according to claim 2,

the stator piece (20) comprises a cylindrical barrel-shaped part (21), an annular groove (23) is formed in the circumferential outer wall of the barrel-shaped part (21) along the circumferential direction of the barrel-shaped part, and the coil (70) is arranged in the annular groove (23).

7. The small-sized whole machine vibration linear motor according to claim 6,

an annular clamping step (24) is arranged on the circumferential outer wall of the cylindrical part (21),

the magnetic conductive ring (80) is cylindrical, is clamped at the clamping step (24) and seals the coil (70) between the magnetic conductive ring (80) and the stator piece (20).

8. The small-sized linear motor with complete machine vibration as claimed in claim 6, wherein the end parts of both ends of the cylindrical part (21) are respectively provided with a leg part (22) protruding along the axial direction, the leg parts (22) are abutted against the housing (10) and form a moving space (90) for the guide post (40) and the magnetic ring (60) to reciprocate with the housing (10).

9. A whole-machine-vibration small-sized linear motor as claimed in claim 1, wherein said stator member (20) is made of a plastic material.