CN218976487U - Vertical linear vibration motor - Google Patents

Abstract

The utility model relates to the technical field of miniature motors and discloses a vertical linear vibration motor, which comprises a shell, vibrators, elastic pieces, a stator and a support, wherein the shell and the support are buckled to form an accommodating space, the vibrators and the stator are arranged in the accommodating space at intervals, the stator is fixed on the support, the stator comprises a coil and a flexible circuit board, the flexible circuit board comprises an inner grounding terminal and an outer grounding terminal, the outer grounding terminal is uniformly provided with an outer grounding terminal and two outer grounding terminals, the outer grounding terminal is positioned between the outer grounding terminals, an inner grounding terminal is arranged between the inner grounding terminal and the outer grounding terminal and faces to one side surface of the support, a through hole is arranged at the position of the support corresponding to the inner grounding terminal, and soldering tin is filled in the through hole to electrically connect the support and the inner grounding terminal, so that the vibration motor is grounded through the electrical connection between the flexible circuit board and the support.

Description

Vertical linear vibration motor

Technical Field

The utility model relates to the technical field of miniature motors, in particular to a vertical linear vibration motor.

Background

Along with the development of touch screen vibration feedback technology, the vibration motor is gradually applied to intelligent wearing devices such as intelligent bracelets and VR/AR equipment from incoming call prompt applications such as mobile phones, and provides very rich touch experiences for users, in particular to a vertical linear vibration motor with large amplitude and strong vibration sense.

Electronic devices such as smart bracelets often generate electrostatic discharge during daily use. For smart bracelets, the static electricity is sufficient to cause the static electricity sensitive devices inside to lose normal function. Therefore, the electronic equipment such as the intelligent bracelet and the like can carry out electrostatic protection on the electrostatic sensitive device, and how to carry out grounding through the existing vertical linear vibration motor and how to enable the structure and installation between the vertical linear vibration motor and the electronic equipment to be simpler and more convenient become an important development direction of research.

Disclosure of Invention

In view of the above problems, the present utility model aims to provide a vertical linear vibration motor for realizing grounding of electronic devices such as smart bracelets to solve static problems, and the specific scheme is as follows.

The utility model provides a vertical linear vibration motor, includes shell, oscillator, elastic component, stator and support, shell and support lock form accommodation space, oscillator and stator interval set up in the accommodation space, oscillator, the other end are fixed to the one end of elastic component are connected oscillator, the elastic component will the oscillator elastic suspension in accommodation space and for the vertical vibration of oscillator provides holding power and resilience force from top to bottom, the stator is fixed on the support, the stator includes coil and flexible circuit board, the flexible circuit board includes inside electric terminal and outside electric terminal that connects, outside electric terminal evenly is provided with an external ground terminal and two external electric terminals, external ground terminal is located between the external electric terminal, face between inside electric terminal and the outside electric terminal one side surface of support is provided with internal ground terminal.

Further, the support comprises a flat bottom, a guide post integrally punched and formed from the center of the bottom to the accommodating space, an L-shaped flange integrally bent and extended from the edge of the bottom, an extension part which is parallel to the flange and used for guiding out the external power connection end outside the shell, and a through hole which is arranged at the position of the bottom corresponding to the internal connecting terminal.

Further, the through holes are filled with solder to electrically communicate with the internal grounding terminals.

Further, the internal power connection terminal is arranged in a ring shape and is provided with an internal power connection terminal.

Further, the internal power connection end and the coil are sleeved on the guide post.

Further, the free end edges of the flanges are provided with first protrusions which extend in parallel and are uniformly arranged.

Further, the elastic piece is a conical leaf spring and comprises an upper connecting ring, a lower connecting ring and a spiral elastic arm connected between the upper connecting ring and the lower connecting ring, and the lower connecting ring is provided with a second bulge corresponding to the first bulge.

Further, the shell is of a cylindrical barrel-shaped structure with one end open, and comprises a bottom wall and a side wall, wherein the free end of the side wall is provided with a notch corresponding to the first protrusion and the second protrusion.

Further, a damping fin is arranged in the center of the inner surface of the bottom wall.

According to the vertical linear vibration motor, the external grounding terminal and the internal grounding terminal which are electrically communicated are respectively arranged at the external grounding end and the internal grounding end of the flexible circuit board, the through holes are arranged at positions of the support corresponding to the internal grounding terminal, and soldering tin is filled in the through holes to electrically communicate the support and the internal grounding terminal, so that the vibration motor is grounded through the electrical communication between the flexible circuit board and the support.

Drawings

Fig. 1 is an exploded view of a vertical linear vibration motor structure of the present utility model.

Fig. 2 is a cross-sectional view of a vertical linear vibration motor of the present utility model.

Fig. 3 is a perspective view of the vertical linear vibration motor of the present utility model.

Fig. 4 is an exploded view of the bracket and flexible circuit board of the present utility model.

Wherein:

1-a housing; 11-damping fin; 12-notch

2-a bracket; 21-an extension; 211-through holes; 22-guide posts; 23-flanges; 231-first protrusions;

3-vibrator; 31-mass block; 32-a magnetic ring; 33 an upper mounting tab; 34-lower mounting tabs;

4-stator; 41-a flexible circuit board; 411-external power terminal; 4111-external connection terminal;

4112-external electrical terminals; 412-an internal power terminal; 4121-an internal ground terminal;

4122-an inner electrical terminal; 42-coil; 421-securing ring;

5-an elastic member; 51-upper connecting ring; 52-a lower connecting ring; 521-second protrusions;

6-soldering tin.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The structure of a vertical linear vibration motor is shown in fig. 1 to 4, and is in a coin shape as a whole, and the vertical linear vibration motor comprises a shell 1, a vibrator 3, an elastic piece 5, a stator 4 and a support 2, wherein the shell 1 and the support 2 are buckled to form an accommodating space (not labeled), the vibrator 3 and the stator 4 are arranged in the accommodating space at intervals, one end of the elastic piece 5 is connected with the vibrator 3, the other end of the elastic piece 5 is fixed on the support 2, the vibrator 3 is elastically suspended in the accommodating space by the elastic piece 5, supporting force and resilience force are provided for vertical vibration of the vibrator 3, the stator 4 is fixed on the support 2, and the stator 4 comprises a coil 42 and a flexible circuit board 41.

The shell 1 is arranged into a cylinder with one end open, and comprises a bottom wall (not marked) and a side wall (not marked), wherein a damping piece 11 is fixedly arranged in the center of the inner surface of the bottom wall and used for buffering the vibrator 3 to directly strike the shell 1 so as to reduce the service life and performance of the vibration motor, meanwhile, noise is prevented from being generated, and a notch 12 is arranged at the free end of the side wall.

The vibrator 3 includes an annular mass 31, a ring-shaped fixed magnet ring 32 within the mass 31, an annular upper mounting piece 33 covering both the mass 31 and the upper surface of the magnet ring 32, and an annular lower mounting piece 34 covering both the mass 31 and the lower surface of the magnet ring 32; the upper mounting plate 33 and the lower mounting plate 34 are used to axially secure the magnetic ring 32 to the mass 31.

The elastic piece 5 is a conical sheet spring and comprises an upper connecting ring 51, a lower connecting ring 52 and a spiral elastic arm (not labeled) connected between the upper connecting ring 51 and the lower connecting ring 52, at least one second bulge 521 is integrally arranged on the outer side edge of the lower connecting ring 52, and the second bulge 521 is matched with the notch 12 of the shell 1; the upper connection ring 51 is connected with the lower mounting piece 34 of the vibrator 3, and the lower connection ring 52 is connected with the bracket 2, so that the vibrator 3 is elastically suspended in the accommodating space by the elastic piece 5, and supporting force and resilience force are provided for vertical vibration of the vibrator 3.

The flexible circuit board 41 includes an inner electrical terminal 412 and an outer electrical terminal 411, wherein the outer electrical terminal 411 is uniformly provided with one external electrical terminal 4111 and two external electrical terminals 4112, preferably, the external electrical terminal 4111 is disposed between the external electrical terminals 4112 and can play a foolproof role for external power supply of the external electrical terminals 4112, the inner electrical terminal 412 is disposed in a ring shape and is provided with an inner electrical terminal 4122, the coil 42 is disposed on the inner electrical terminal 412 and electrically connected with the inner electrical terminal 4122, an internal electrical terminal 4121 is disposed between the inner electrical terminal 412 and the outer electrical terminal 411 and faces a side surface of the bracket 2, and the external electrical terminal 4111 is electrically connected with the internal electrical terminal 4121.

The bracket 2 is made of conductive metal and comprises a flat bottom (not labeled), a guide post 22 integrally punched and formed from the center of the bottom to the accommodating space, an L-shaped flange 23 integrally bent and extended from the edge of the bottom, an extension part 21 extending from the bottom and the flange in parallel for guiding out an external power connection end outside the shell 1, and a through hole 211 arranged at the bottom near the extension part 21, wherein the edge of the free end of the flange 23 is parallel and uniformly provided with at least one first bulge 231, the first bulge 231 corresponds to and is overlapped with the second bulge 521 of the elastic piece 5, the internal power connection end 412 of the flexible circuit board 41 and the coil 42 are sleeved on the guide post 22, a fixing ring 421 is arranged above the coil 42, and the fixing ring 421 is used for axially positioning the coil 42; the through hole 211 is provided corresponding to the ground terminal 4121, and the holder 2 and the flexible circuit board 41 are grounded, so that the solder 6 can be filled in the through hole 211 to electrically communicate with the ground terminal 4121.

When the housing 1 is buckled with the bracket 2 and welded and fixed, the first protrusion 231 and the second protrusion 521 are accommodated in the notch 12 of the housing 1 to realize circumferential positioning of the bracket 2 and the elastic member 5, at this time, the through hole 211 is filled with solder 6 to be electrically connected to the internal connection terminal 4121, and the external connection terminal 4112 and the external connection terminal 4111 are electrically connected to a circuit board (not shown) of an electronic device such as a smart band (not shown) respectively, so as to realize grounding of the vibration motor through the electrical connection between the flexible circuit board 41 and the bracket 2, thereby releasing static electricity generated by the electronic device such as the smart band (not shown) and protecting static electricity sensitive components of the electronic device.

It should be noted that, in the description of the present utility model, the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "horizontal direction", "vertical direction", etc. are directions or positional relationships based on the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or component to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides a vertical linear vibration motor, includes shell, oscillator, elastic component, stator and support, shell and support lock form accommodation space, oscillator and stator interval set up in the accommodation space, oscillator, the other end are fixed to the one end of elastic component are connected oscillator, the elastic component will the oscillator elastic suspension in accommodation space and for the vertical vibration of oscillator provides holding power and resilience force from top to bottom, the stator is fixed on the support, the stator includes coil and flexible circuit board, the flexible circuit board includes inside electric terminal and outside electric terminal that connects, its characterized in that, outside electric terminal evenly is provided with an external earthing terminal and two external earthing terminals, external earthing terminal is located between the external electric terminal, between inside electric terminal and the outside electric terminal face one side surface of support is provided with the internal earthing terminal.

2. The vertical linear vibration motor according to claim 1, wherein the bracket comprises a bottom of a flat plate, a guide post integrally punched from a center of the bottom toward the accommodation space, an L-shaped flange integrally bent and extended from an edge of the bottom, an extension portion extending in parallel from the bottom and the flange for guiding the external power receiving terminal outside the housing, and a through hole provided at a position of the bottom corresponding to the internal ground terminal.

3. A vertical linear vibration motor according to claim 2, wherein the through hole is filled with solder to electrically communicate with the internal ground terminal.

4. A vertical linear vibration motor according to claim 3, wherein the internal terminal is provided in a ring shape and is provided with an internal terminal.

5. The vertical linear vibration motor according to claim 4, wherein the internal power connection terminal and the coil are sleeved on the guide post.

6. A vertical linear vibration motor according to claim 5, wherein the flange free end edges extend in parallel and are uniformly arranged first protrusions.

7. The vertical linear vibration motor according to claim 6, wherein the elastic member is a tapered leaf spring including an upper connecting ring, a lower connecting ring, and a helical elastic arm connected between the upper and lower connecting rings, the lower connecting ring being provided with a second protrusion corresponding to the first protrusion.

8. The vertical linear vibration motor according to claim 7, wherein the housing has a cylindrical barrel-like structure having one end opened, and comprises a bottom wall and a side wall, and the free end of the side wall is provided with notches corresponding to the first projection and the second projection.

9. The vertical linear vibration motor according to claim 8, wherein a damping fin is provided at the center of the inner surface of the bottom wall.

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