A vibration micromotor

Abstract

The present invention discloses a novel vibration micromotor, comprising a shell, a back cover, a bearing, a rotor assembly and a spring assembly. One end of the shell is connected to the bearing, and the bearing and the shell are of a nested design. The other end of the shell is connected to the back cover, and the back cover and the shell are of a nested design. The back cover fixes the spring assembly and the rotor assembly inside the shell. The rotor assembly is located at the front end inside the shell, and the spring assembly is located at the rear end inside the shell. The front end of the rotor assembly passes through the shell and the bearing respectively, and the rear end of the rotor assembly passes through the spring assembly and the back cover respectively, and the end is located inside the middle of the back cover. The present invention utilizes a pulse signal to continuously power the motor and cut off the power supply, so that the rotor rotates and returns to the initial position under the action of the spring, thereby generating high-frequency vibration.

Description

Technical Field

[0001] The invention relates to the technical field of vibration micro-motors. Background Art

[0002] Most traditional motors move in one direction. If you want to achieve reciprocating motion of a traditional motor, you usually need to connect an external mechanical conversion device or use a synchronous motor to control the traditional motor. This method often makes the overall structure of the motor complicated and increases the size of the motor, which is not only inconvenient for the application of the motor but also increases the manufacturing cost of the motor.

[0003] Therefore, there is currently a spring motor that uses the torque generated by a spring lock to change the direction of motor movement. Since the rotor of a traditional motor is difficult to be processed secondary, its shape and size are difficult to be processed and utilized, so it has low applicability, and most of the springs are in a welded state, resulting in low durability of the spring and easy breakage. It is also difficult to achieve precise positioning during the welding process, which affects the consistency of the motor performance, thereby affecting the loosening of the spring during use. This method has low production efficiency and low cost rate, and is difficult to achieve large-scale production, so it cannot provide high economic benefits. Summary of the invention

[0004] The purpose of the present invention is to provide a vibration micromotor, which can reduce the error caused by manual assembly by completing integrated assembly with a machine, and the elastic part is composed of more than two parts, which reduces the damage rate of the spring. The connection is fixed by setting holes and grooves, so that the elastic part has better activity performance, and the symmetrical design makes the spring evenly stressed. A connecting part is added in the middle, and the rotation process forms a compression state for the elastic part at one end and a tension state at the other end. By utilizing the elastic principle of the spring, reaction forces are formed at both ends to drive the rotor back to the initial position.

[0005] In order to achieve the purpose of the present invention, the present invention adopts the following technical solutions:

[0006] A vibration micromotor, characterized in that it includes a shell, a back cover, a bearing, a magnet, a rotor assembly and a spring assembly, one end of the shell is connected to the bearing, the bearing and the shell are of a nested design, the other end of the shell is connected to the back cover, the back cover and the shell are of a nested design, the back cover fixes the magnet, the spring assembly and the rotor assembly to the inside of the shell, the rotor assembly is located at the front end of the shell, the spring assembly is located at the rear end of the shell, the magnet is located outside the rotor assembly, the front end of the rotor assembly passes through the shell and the bearing respectively, the rear end of the rotor assembly passes through the spring assembly and rests in the central empty slot of the back cover respectively; the rotor assembly includes a rotor, An iron core, a coil, a conducting wire, a fixing member A and a fixing member B, wherein the iron core is sleeved outside a rotor, the left and right ends of the iron core are connected to the coil, one end of the coil is connected to the conducting wire, the other end of the conducting wire passes through a spring assembly and passes out from a rear cover, the front and rear ends of the rotor pass through fixing members A and fixing members B respectively, the fixing member A is located at the front end inside the shell, and the fixing member B is located at the front end of the spring assembly; the spring assembly comprises a spring fixing shell, a spring fixing plate and a spring, springs are arranged on the left and right sides of the upper end surface of the spring fixing plate, the lower end surface of the spring fixing plate is symmetrically arranged with a spring with respect to the upper end surface, and the spring fixing shell is connected to the spring fixing plate via a spring.

[0007] Preferably, the spring assembly is provided with four springs, and the rotor assembly is provided with two coils and two magnets.

[0008] Preferably, the spring fixing plate is provided with spring fixing grooves B corresponding to the number of springs, the spring fixing plate is provided with grooves corresponding to the fixing members B, and the grooves are further provided with holes for the rotor to pass through.

[0009] Preferably, the spring fixing shell is provided with spring fixing grooves A corresponding to the number of springs, and the end surfaces of the upper and lower ends of the spring fixing shell are concave and arc-shaped, which act to limit the rotational activity range of the fixing member B.

[0010] Preferably, the fixing member A and the fixing member B are both provided with fixing wings at one end facing the iron core, and the fixing wings are used to be sleeved on the front and rear sides of the iron core.

[0011] Preferably, the wire passes through the intersection of the spring fixing plate and the left and right ends of the spring fixing shell, and the wire passes through the hole provided in the back cover or is connected to the micromotor chip.

[0012] Preferably, the spring is connected by welding or fixed by adhesive.

[0013] Preferably, the coil and the iron core are of drawer-type design.

[0014] Preferably, the outer diameter of the spring fixing shell is smaller than the inner diameter of the rear cover, and the spring fixing shell and the inner side of the rear cover are of nested design.

[0015] Preferably, the other end of the fixing member A is provided with a sleeve, and the sleeve is used to connect the bearing. The other end of the fixing member B is provided with a slot, and the slot is used to connect the spring fixing plate.

[0016] Beneficial effects: The symmetrical design of the spring makes the spring more durable; the compact structure makes the spring evenly stressed, reduces noise, and has a good use effect. The spring is fixed by a slot instead of being welded, so it is easy to replace parts in case of failure, and the cost is low, meeting market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 : A structural schematic diagram of a vibration micromotor of the present invention;

[0018] Figure 2 : A cross-sectional schematic diagram of a vibration micromotor of the present invention;

[0019] Figure 3 : A partial cross-sectional schematic diagram of a vibration micromotor of the present invention;

[0020] Figure 4 : A schematic diagram of a spring assembly of a vibrating micromotor in a normal state of the present invention;

[0021] Figure 5 : A schematic diagram of the working state of a spring assembly of a vibrating micromotor of the present invention;

[0022] Figure 6 : A structural diagram of a fixing part A and a fixing part B of a vibration micromotor of the present invention;

[0023] In the figure, 1-housing, 2-rear cover, 3-rotor assembly, 4-spring assembly, 5-bearing, 6-magnet, 31-rotor, 32-iron core, 33-coil, 34-conducting wire, 35-fixing part A, 36-fixing part B, 38-fixing wing, 41-spring fixing shell, 42-spring fixing plate, 43-spring, 351-head, 361-slot, 411-spring fixing slot A, 421-spring fixing slot B, 422-groove. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centered element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method. The terms "upper end", "lower end", "left side", "right side", "front end", "rear end" and similar expressions used herein are positional relationships with reference to the accompanying drawings.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or related listed items.

[0027] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods. Example

[0028] like Figure 1-3As shown, a vibration micromotor includes a housing 1, a rear cover 2, a bearing 5, two magnets 6, a rotor assembly 3 and a spring assembly 4. The bearing 5 and the housing 1 are of a sleeve-embedded design. The bearing 5 is inserted into the front end of the housing 1 and is fixed by adhesive. The rear cover 2 and the housing 1 are of a sleeve-embedded design. The rear cover 2 completely seals and fixes the two magnets 6, the spring assembly 4 and the rotor assembly 3 inside the housing 1. The rotor assembly 3 is located at the front end of the spring assembly 4. One end of the two magnets 6 is respectively located at the left and right ends of the spring assembly 4, and the other ends of the two magnets 6 are attached to the inner wall of the housing 1. The rear cover 2 is located at the rear end of the spring assembly 4. The rotor assembly 3 includes a rotor 31, iron core 32, two coils 33, two wires 34, fixing piece A35 and fixing piece B36, the iron core 32 and the coil 33 are of drawer-type design, the two coils 33 are respectively embedded from the left and right sides of one end of the iron core 32, one end of the two wires 34 is respectively connected to one end of the two coils 33, the other end of the two wires 34 passes through the intersection of the left and right ends of the spring fixing plate 42 and the spring fixing shell 41, and passes through the hole provided in the rear cover 2 to avoid contact between the wires 34 and the spring assembly 4, and to prevent the spring assembly 4 from being entangled with the wires 34 during the rotation process and causing damage, and the middle of the fixing piece A35 and the fixing piece B36 are provided with a rotation hole. The front and rear ends of the rotor 31 pass through the hole through which the rotor passes, respectively, and the front and rear ends of the rotor 31 pass through the fixing piece A35 and the fixing piece B36. The fixing pieces A35 and the fixing pieces B36 are both provided with fixing wings 38 at one end facing the iron core 32. The fixing wings 38 are used to clamp the front and rear ends of the iron core 32. The other end of the fixing piece A35 is provided with a sleeve 351, and the sleeve 351 is used to connect the bearing 5. The other end of the fixing piece B36 is provided with a slot 361, and the slot 361 is used to clamp the groove 422 of the spring fixing plate 42. The spring assembly 4 includes a spring fixing shell 41, a spring fixing plate 42 and four springs 43. The upper end surface of the spring fixing plate 42 is divided into left and right sides. A spring fixing groove B421 is provided separately, and the lower end surface of the spring fixing plate is symmetrically provided with the spring fixing groove B421, and the spring fixing plate 42 is also provided with a groove 422 corresponding to the fixing piece B36, and the middle part of the groove 422 is also penetrated with a hole for accommodating the rotor 31 to pass through, and the end surfaces of the upper and lower ends of the spring fixing shell 41 are concave and arc-shaped, which acts to limit the rotation range of the fixing piece B36, and the spring fixing shell 41 is also provided with a spring fixing groove A411 corresponding to the spring fixing groove B421, one end of the four springs 43 is installed in the spring fixing groove B421, and the other end of the four springs 43 is installed in the spring fixing groove A411;The outer diameter of the spring fixing shell 41 is smaller than the inner diameter of the rear cover 2. The spring fixing shell 41 and the inner side of the rear cover 2 are of a sleeve-embedded design. The spring fixing shell 41 is embedded in the rear cover 2. The front end of the rotor 31 passes through the interior of the housing 1 and passes through the bearing 5 until the sleeve contacts the bearing and is bonded by adhesive. The rear end of the rotor 31 passes through the hole in the middle of the spring fixing plate 42 and rests in the central hollow groove of the rear cover 2. At this time, the groove 422 in the fixing piece B36 and the card slot 361 in the spring 43 mounting plate are connected. The rear cover 2 is fixed to the housing by squeezing the outer side of the rear end of the housing 1 through the instrument to complete the assembly. ;

[0029] When in use, the wire 34 acts as an electrical conductor to energize the coil 33 (pulse signal). Due to the principle of electromagnetic induction, a magnetic field is generated around the coil. Under the interaction between the magnet and the magnetic field around the coil, the iron core 32 rotates to the left or right. The rotation process of the iron core 32 drives the rotor 31 to rotate together, and the bearing 5 is used to reduce the friction during the rotation of the rotor 31, thereby extending the service life of the rotor 31. The rear end of the rotor 31 drives the spring fixing plate 42 through the fixing piece B36. One side of the spring 43 at the upper end of the spring fixing plate 42 forms a stretched state, and the other side forms a compressed state. The state of the spring 43 at the lower end is opposite to that of the spring 43 at the upper end, and the state of the spring 43 on the left is opposite to that of the spring 43 on the right. After the wire 34 is powered off, the rotor 31 forms a pulling force in the stretched state of the spring 43 and a reaction force in the compressed state of the spring 43 through the characteristics of the spring 43. The rotor 31 returns to the initial position through the fixing piece B36. Through continuous power on and power off, the back and forth rotation of the motor forms vibration.

[0030] like Figure 4-5 As shown, in this specific embodiment, when the spring assembly is at rest, the spring is in a semi-compressed equilibrium state; when rotating, pressure is applied to the spring through the spring fixing plate B, so that one side of the spring at the upper end is in a compressed state and the other side is in a stretched state, and the states of the two sides of the lower end are opposite to those of the two sides of the upper end, one side is in a stretched state and the other side is in a compressed state, and the rotor stops moving. Through the spring characteristics, the spring in the compressed state forms a reaction force, and the spring in the stretched state forms a pulling force, and the spring restores the spring fixing plate to its initial position, and at the same time, the spring fixing plate drives the fixing plate to restore its initial position.

[0031] like Figure 6 As shown, in this specific embodiment, the left and right sides of the fixing parts A35 and the fixing parts B36 close to the iron core 32 are provided with fixing wings 38, which are respectively used to be clamped on the front and rear ends of the iron core 32. The other end of the fixing part A35 is provided with a sleeve 351 for connecting to the bearing 5, and the other end of the fixing part B36 is provided with a slot 361 for connecting to the spring fixing plate 42. Example

[0032] On the basis of the specific embodiment 1, the connection mode between the shell 1 and the back cover 2 can be changed to bolt fixing or spring hook fixing, which is convenient for the maintenance of the micromotor. The connection mode between the fixing piece B36 and the spring fixing plate 42 can be changed to a fixed connection to avoid the friction between the slot 361 of the fixing piece B3 and the groove 422 of the spring fixing plate 42 due to frequent rotation, which causes the connection to slip and cannot be reset by the spring rotor; the spring 43 can be thickened in width, and the spring fixing groove A411 and the spring fixing groove B421 are also thickened in width corresponding to the spring 43. The spring 43 does not need to be fixed and is directly inserted into the spring fixing groove A411 and the spring fixing groove B421. Due to the force area The spring 43 is not easily broken, and there is no need to worry about the misalignment of the spring 43. In this way, the spring will not be broken due to a large degree of distortion caused by being fixed, which increases the durability of the spring 43. Limiting positions are provided at the left and right ends of the spring fixing plate 42, so that the spring 43 can only rotate within the wrapped range of the spring fixing shell 41, and will not protrude to the front and rear ends due to frequent rotation and cause misalignment. The bearing 5 and the sleeve 351 can be connected in a detachable manner. Even if individual components inside the motor are damaged, they can be replaced by replacing related components and recycled to maximize their utilization. The other end of the wire 34 can be set to be connected to the micromotor chip on the outside of the shell, so that its application range is widened.

[0033] The vibration motor of the present invention has a simple structure, reasonable design, low cost and high production efficiency. The motor has strong durability and compatibility and can be assembled into new products with corresponding equipment products according to application requirements to meet market demand.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A vibration micromotor, characterized in that: The invention comprises a housing, a rear cover, a bearing, a magnet, a rotor assembly and a spring assembly, wherein one end of the housing is connected to the bearing, and the bearing and the housing are of a sleeve-embedded design, and the other end of the housing is connected to the rear cover, and the rear cover and the housing are of a sleeve-embedded design, and the rear cover fixes the magnet, the spring assembly and the rotor assembly inside the housing, the rotor assembly is located at the front end inside the housing, the spring assembly is located at the rear end inside the housing, and the magnet is located outside the rotor assembly, the front end of the rotor assembly passes through the housing and the bearing respectively, and the rear end of the rotor assembly passes through the spring assembly and abuts against the central empty slot of the rear cover respectively; the rotor assembly comprises a rotor, an iron core, a coil, a guide The rotor comprises a spring assembly, a fixing member A and a fixing member B, the iron core is sleeved outside the rotor, the left and right ends of the iron core are connected to the coil, one end of the coil is connected to the wire, the other end of the wire passes through the spring assembly and passes out from the rear cover, the front and rear ends of the rotor pass through the fixing member A and the fixing member B respectively, the fixing member A is located at the front end inside the shell, and the fixing member B is located at the front end of the spring assembly; the spring assembly comprises a spring fixing shell, a spring fixing plate and a spring, the upper end surface of the spring fixing plate is provided with springs on both the left and right sides, the lower end surface of the spring fixing plate is symmetrically provided with springs with respect to the upper end surface, and the spring fixing shell is connected to the spring fixing plate through a spring; The spring assembly is provided with four springs, and the rotor assembly is provided with two coils and two magnets; The spring fixing plate is provided with spring fixing grooves B corresponding to the number of springs, the spring fixing plate is provided with grooves corresponding to the fixing members B, and the grooves are further provided with holes for the rotor to pass through.

2. A vibration micromotor according to claim 1, characterized in that: The spring fixing shell is provided with spring fixing grooves A corresponding to the number of springs. The end surfaces of the upper and lower ends of the spring fixing shell are concave and arc-shaped, which act to limit the rotation range of the fixing member B.

3. A vibration micromotor according to claim 1, characterized in that: The fixing member A and the fixing member B are both provided with fixing wings at one end facing the iron core, and the fixing wings are used to be sleeved on the front and rear sides of the iron core.

4. A vibration micromotor according to claim 1, characterized in that: The wire passes through the intersections of the spring fixing plate and the left and right ends of the spring fixing shell, and the wire passes through the hole provided on the rear cover or is connected to the micro-motor electric chip.

5. A vibration micromotor according to claim 1, characterized in that: The spring is connected by welding or fixed by adhesive.

6. A vibration micromotor according to claim 1, characterized in that: The coil and the iron core are of drawer-type design.

7. A vibration micromotor according to claim 4, characterized in that: The outer diameter of the spring fixing shell is smaller than the inner diameter of the rear cover, and the spring fixing shell and the inner side of the rear cover are of nested design.

8. A vibration micromotor according to claim 5, characterized in that: The other end of the fixing member A is provided with a sleeve, and the sleeve is used to connect the bearing. The other end of the fixing member B is provided with a slot, and the slot is used to connect the spring fixing plate.

Images