CN110445299A - Disc type vibrating motor for mobile phone - Google Patents

Abstract

The invention relates to a vibration motor for a disc-type mobile phone. The vibration motor for a disc-type mobile phone includes a stator, a turntable and a vibration ring; the turntable includes an inner conductive ring, an outer conductive ring, and a conductive wire; The magnetic poles of the adjacent permanent magnet driving strips are arranged in opposite directions; the stator includes a pair of permanent magnets with opposite poles, and the two permanent magnets are respectively arranged above and below the turntable; the vibrating ring The coaxial sleeve is arranged on the outside of the turntable, and the inside of the vibrating ring includes a vibrating groove and a vibrator, and the vibrating element is made of a bar-shaped permanent magnet; when the permanent magnet drive bar rotates to match the position of the vibrating groove , the direction of the magnetic poles of the vibration groove and the permanent magnet driving bar is on the same straight line; the vibration motor has a novel structure and unique principle, and effectively improves the vibration diversity of the motor while maintaining a small size, thereby satisfying the needs of mobile phone software for motors, etc. hardware requirements.

Description

Disc mobile phone vibration motor

technical field

The invention relates to a linear motor, in particular to a disc motor.

Background technique

Linear motor is a device that directly converts electrical energy into linear motion mechanical energy without any intermediate conversion mechanism. Its structure is simple. Compared with traditional rotary motors, its weight and volume are greatly reduced; linear motors can realize linear transmission. , to eliminate various positioning errors caused by intermediate links, so it has high positioning accuracy; therefore, it has fast response speed, high sensitivity, and good follow-up; the current linear motor is widely used in the field of mobile phones, and it can ensure The mobile phone has a thinner thickness and can maintain a better vibration effect at the same time; however, as the software functions of the mobile phone become more and more complex, the performance requirements for the hardware are getting higher and higher, especially for many game software, the vibration feedback of the mobile phone Capability has high requirements and diverse needs, such as the need to control the severity, rhythm, and urgency of vibration intensity; these refined requirements are beyond the reach of current linear motors.

Contents of the invention

In view of the above problems, the present invention provides a vibrating motor for a disc-type mobile phone. The vibrating motor is a deformation of a linear motor. It has a novel structure and a unique principle, and effectively improves the vibration diversity of the motor while maintaining a small size. And then meet the hardware requirements of the mobile phone software on the motor and so on.

In order to solve the above problems, the technical solution adopted in the present invention is: the vibrating motor of the disc mobile phone includes a stator, a rotating disc and a vibrating ring;

The turntable includes an inner conductive ring, an outer conductive ring and a conductive wire electrically connected between the two conductive rings, the inner conductive ring, the outer conductive ring are electrically coupled with the power supply and the control element;

The turntable also includes permanent magnet drive strips, the permanent magnet drive strips are distributed on the outside of the outer conductive ring in a rotationally symmetrical and equidistant manner with the axis of the turntable as the center line; the magnetic poles of adjacent permanent magnet drive strips are arranged in opposite directions;

The turntable also includes a support shaft arranged on the axis of the turntable, and the turntable can freely rotate relative to the support shaft;

The stator includes a pair of permanent magnets with opposite poles, the two permanent magnets are respectively arranged above and below the turntable, and the magnetic poles of the permanent magnets near the turntable are directly opposite to the position where the current-carrying wire is located. ;

The vibrating ring is coaxially sleeved on the outside of the turntable, and the vibrating ring includes vibrating grooves inside. The vibrating grooves are distributed in the vibrating ring symmetrically in rotation, and vibrators are slidably arranged in each vibrating groove. The vibrator is made of bar permanent magnets;

When the permanent magnet driving bar rotates to match the position of the vibrating groove, the direction of the magnetic poles of the vibrating groove and the permanent magnet driving bar is in the same straight line, and the magnetic poles of the vibrator in the vibrating groove are directly opposite to the magnetic poles of the permanent magnet driving bar .

The beneficial effects of the present invention are: the permanent magnets arranged above and below the turntable form a magnetic field, the direction of the magnetic force lines of this magnetic field passes through the turntable vertically, and the power supply and control elements direct the current into the current-carrying wire; Under the action of electromagnetic force, the turntable is driven to rotate under the action of electromagnetic force; with the rotation of the turntable, the permanent magnet drive bar periodically sweeps the vibration grooves on the vibration ring, and acts on the vibration groove through magnetic force. The vibrator; whenever the permanent magnet drive bar rotates to match the position of the vibrating slot, the force of the permanent magnet drive bar on the vibrator reaches the strongest. When the permanent magnet drive bar and the vibrator repel each other at the same pole, the vibrator will When moving away from the turntable along the vibrating groove, and the next permanent magnet drive bar approaches the vibrator, the vibrator will be pulled again by the magnetic attraction and move in the opposite direction; then each vibrator reciprocates in the vibrating groove, thereby causing the vibrating ring to vibrate.

Since the turntable rotates once, each permanent magnet driving strip will exert a force on each vibrator, and there are multiple permanent magnet driving strips on the turntable, and there are also multiple vibrators at the same time, so every time the turntable rotates, The vibrating ring will vibrate several times at high frequency; therefore, the vibrating motor can produce a more powerful vibration effect; the rotation speed and direction of the turntable can be controlled by adjusting the magnitude and direction of the current in the electrified wire through the control element; at the same time, different quantities can be assembled The unique vibrator and permanent magnet drive bar make the vibrating plate produce a variety of vibration intensities, vibration rhythms and modes; thus effectively meeting the diverse needs of the software.

Preferably, the energized wires extend radially of the turntable; so that the electromagnetic force generated by the energized wires is along the tangential direction of the turntable, thereby maximally driving the turntable to rotate.

As a preference, each of the vibrating grooves also includes a limit buckle that limits the movement of the vibrator, and the limit buckle is electrically connected to the control element; through the limit buckle, the number of activities of the vibrator in the vibrating ring can be controlled, thereby realizing Adjustment of vibration frequency and vibration strength.

Preferably, the quality of each vibrator is different; due to the different quality of the vibrator, the movement speed and vibration intensity will be different when subjected to the magnetic field of the permanent magnet driving strip, and then more diverse vibration effects will be produced.

Preferably, a magnetic field shielding film is wrapped around the side wall of the permanent magnet drive bar; in order to reduce the magnetic field interference of the permanent magnet drive bar to the stator.

Description of drawings

Fig. 1 is a top view structure schematic diagram of an embodiment of the vibrating motor of the disc-type mobile phone.

FIG. 2 is a schematic side view of the cross-sectional structure of the embodiment shown in FIG. 1 .

Detailed ways

Example:

In the embodiment shown in Fig. 1 and Fig. 2, the vibrating motor of the disc mobile phone includes a stator 1, a turntable 2 and a vibrating ring 3;

The turntable 2 includes an inner conductive ring 4, an outer conductive ring 5, and a conductive wire 6 electrically connected between the two conductive rings, and the conductive wire 6 extends radially along the turntable 2; the inner conductive ring 4 , The outer conductive ring 5 is electrically coupled with the power supply and the control element, as shown in a circuit connection mode shown in Figure 1;

The turntable 2 also includes a permanent magnet drive strip 21, and the side wall of the permanent magnet drive strip 21 is wrapped with a magnetic field shielding film; the permanent magnet drive strip 21 is distributed equidistantly with the axis of the turntable 2 as the center line and rotational symmetry. Outside the outer conductive ring 5; the magnetic poles of the adjacent permanent magnet drive strips 21 are arranged in opposite directions;

The turntable 2 also includes a support shaft 22 arranged on the axis of the turntable 2, and the turntable 2 can freely rotate relative to the support shaft 22;

The stator 1 includes a pair of permanent magnets with opposite poles. The two permanent magnets are arranged above and below the turntable 2 respectively. The position is right;

The vibrating ring 3 is coaxially sleeved on the outside of the turntable 2, and the vibrating ring 3 includes vibrating grooves 31 inside, and the vibrating grooves 31 are distributed in the vibrating ring 3 with rotational symmetry, and slide in each vibrating groove 31 Vibrators 32 are provided, and the quality of each vibrator 32 is different, and the vibrators 32 are made of bar-shaped permanent magnets; each of the vibrating grooves 31 also includes a stop buckle 33 that limits the activities of the vibrators 32. The limit button 33 is electrically connected with the control element;

When the permanent magnet driving strip 21 rotates to match with the vibrating groove 31, the magnetic pole connection direction of the vibrating groove 31 and the permanent magnet driving strip 21 is on the same straight line, and the magnetic pole of the vibrator 32 in the vibrating groove 31 is aligned with the permanent magnet. The magnetic poles of the drive bar 21 are opposite.

The permanent magnets arranged above and below the turntable 2 form a magnetic field, and the direction of the magnetic force lines of this magnetic field passes through the turntable 2 vertically, and the power supply and control components direct the current into the current-carrying wire 6; according to the principle of electromagnetism, the current is subjected to electromagnetic force in the magnetic field , and in this embodiment, the energized wires 6 are arranged radially along the turntable 2, and the electromagnetic force generated is along the tangential direction of the turntable 2, so the turntable 2 is driven to rotate under the action of the electromagnetic force; with the turntable 2 The rotation of the permanent magnet driving strip 21 periodically sweeps each vibration groove 31 on the vibrating ring 3, and acts on the vibrator 32 in the vibration groove 31 by magnetic force; the magnetic field shielding film wrapped on the side wall of the permanent magnet driving strip 21 It can effectively reduce the interference of the magnetic field to the stator 1, thereby ensuring that the turntable 2 can rotate efficiently; whenever the permanent magnet drive bar 21 rotates to match the position of the vibrating groove 31, the force exerted by the permanent magnet drive bar 21 on the vibrator 32 reaches The strongest, when the permanent magnet drive bar 21 and the vibrator 32 repel each other at the same pole, the vibrator 32 will move away from the turntable 2 along the vibration groove 31, and when the next permanent magnet drive bar 21 is close to the vibrator 32, the vibrator 32 will be The magnetic attraction pulls again and moves in the opposite direction; then each vibrator 32 reciprocates in the vibrating groove 31 , and then vibrates the vibrating ring 3 .

Since the turntable 2 rotates once, each permanent magnet drive strip 21 will generate a force on each vibrator 32 once, and there are multiple permanent magnet drive strips 21 on the turntable 2, and there are also multiple vibrators 32 at the same time. Therefore, the vibrating ring 3 will vibrate several times at high frequency every time the turntable 2 rotates; therefore, the vibrating motor can produce a more powerful vibration effect; the rotation of the turntable 2 can be controlled by adjusting the magnitude and direction of the current in the conducting wire 6 through the control element speed and direction of rotation; at the same time, different numbers of vibrators 32 and permanent magnet drive strips 21 can be assembled, so that the vibrating plate can produce diversified vibration intensities, vibration rhythms and modes; at the same time in this embodiment, the quality of each vibrator 32 Different, under the action of the same magnetic field force, different vibrators 32 produce vibrations with different intensities and speeds, making the vibration of the vibrating plate more continuous, continuous and delicate; in addition, when vibrations of specific frequencies and intensities are required, you can pass The control element adjusts the opening and closing of the limit buckle 33 to limit the vibrator 32 with a specific quantity and quality, thereby further enriching the vibration effect of the vibrating ring 3 and effectively meeting the diverse needs of the software for the mobile phone hardware.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (5)

1. a kind of disc type vibrating motor for mobile phone, which includes stator (1), turntable (2) and oscillation ring (3)；It is characterized by: the turntable (2) includes interior conducting ring (4), outer conducting ring (5) and is electrically connected at two conducting rings Between electrified wire (6), the interior conducting ring (4), outer conducting ring (5) and power supply, control element electrical couplings；The turntable It (2) further include having permanent magnetic drive item (21), the permanent magnetic drive item (21) is using the axis of turntable (2) as center line, rotational symmetry Be equally spaced in the outside of outer conducting ring (5)；Adjacent permanent magnet drives the magnetic pole arragement direction of item (21) opposite；The turntable It (2) further include the support shaft (22) having She Zhi on turntable (2) axis, the turntable (2) can be relative to support shaft (22) certainly By rotating；The stator (1) includes a pair of heteropolar opposite permanent magnet, and two permanent magnets are separately positioned on the turntable (2) above and below, the permanent magnet close to turntable (2) side magnetic pole and the electrified wire (6) where position just It is right；The oscillation ring (3) is coaxially set in the outside of turntable (2), and the inside of the oscillation ring (3) includes vibra shoot (31), Vibra shoot (31) rotational symmetry is distributed in oscillation ring (3), and sliding is provided with ticker in each vibra shoot (31) (32), the ticker (32) is made by strip permanent magnet；When the permanent magnetic drive item (21) rotation to vibra shoot (31) position It sets and matches clock synchronization, the magnetic pole line direction of vibra shoot (31) and permanent magnetic drive item (21) is in same straight line, and the vibra shoot (31) is interior The magnetic pole of ticker (32) and the magnetic pole face of permanent magnetic drive item (21).

2. disc type vibrating motor for mobile phone according to claim 1, it is characterised in that: the electrified wire (6) is along turntable (2) Radially extend.

3. disc type vibrating motor for mobile phone according to claim 1 or 2, it is characterised in that: in each vibra shoot (31) also Including restricted ticker (32) movable limit buckle (33), the limit buckle (33) and control element are electrically connected.

4. disc type vibrating motor for mobile phone according to claim 3, it is characterised in that: the quality of each ticker (32) is different.

5. disc type vibrating motor for mobile phone according to claim 1 or 2, it is characterised in that: in the side of permanent magnetic drive item (21) Peripheral wall is enclosed with magnetic field shielding film.