Vibration motor

#The present invention relates to a vibration motor.

#A vibration motor is a kind of component which converts the electric energy into the mechanical energy by using the electromagnetic force. The vibration motor is usually installed inside a portable mobile device to produce vibration feedback, for example, the vibration of mobile phone or the vibration feedback of game player.

#A related vibration motor generally comprises a fixation part and a vibration part. The fixation part comprises a housing having an accommodation space and coils arranged in the housing. The vibration part is set in the accommodation space by elastic parts, and comprises a magnet and a weight for receiving the magnet. After electrified with alternating current, the coil will interact with the magnet, producing magnetic field force. Because the coil doesn't move, the whole vibration part will be affected by the magnetic force and do the reciprocating vibration supported by the elastic element. The weights of the magnet and the weight are required to add in the vibration motor of relevant technology in order to acquire the stronger vibration feedback effect; therefore, the vibration motor will have low reliability as a result of increasing vibratory load of the vibrator and reducing durability of the elastic part.

#Many aspects of the embodiment can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.

#FIG. 1 is an isometric view of a vibration motor in accordance with an exemplary embodiment of the present disclosure.

#FIG. 2 is an illustration of a vibrator of the vibration motor in FIG. 1.

#The present invention will hereinafter be described in detail with reference to an exemplary embodiment. To make the technical problems to be solved, technical solutions and beneficial effects of present disclosure more apparent, the present disclosure is described in further detail together with the figures and the embodiment. It should be understood the specific embodiment described hereby is only to explain this disclosure, not intended to limit this disclosure.

#As shown in FIGS. 1-2, the present disclosure provides a vibration motor 100 comprising a housing 10, a vibrator accommodated in the housing 10, a stator and an elastic part 60. The housing 10 is provided with a bottom wall 12 for fixing the stator and a side wall 11 which is vertical to the bottom wall, wherein the bottom wall 12 is presented as a long strip. The vibrator is suspended in the housing 10 by using the elastic part 60 and vibrates along with the direction of long axis which is parallel to the bottom wall 12; one of the vibrator and the stator comprises coils 20, and the other comprises a magnet 40; the coils and the magnet 40 are arranged oppositely with interval. In the embodiment, the coils 20 are taken as the stator and fixed on the bottom wall 12 of the housing 10.

#The vibrator comprises at least one weight having an accommodation hole 31, a magnet 40 arranged in the accommodation hole 31 of the weight 30 and a pole plate 50 which covers one side of the accommodation hole 31. The accommodation hole 31 passes through the weight 30 along with the direction vertical to the direction of vibration of the vibrator and is positioned at the center of the weight 30. In the embodiment, the numbers of the accommodation holes 31 and the magnetics 40 are 2 respectively; one or multiple accommodation holes 31 and the magnetics 40 can be arranged in the other selectable modes of execution; and the shapes of the accommodation holes 31 and the magnetics 40 are not limited to this. The coils 20 and the pole plate 50 are arranged on the upper side and the lower side of the magnet 40. The magnet 40 opposite to the coils 20 is exposed out from the accommodation hole 31, wherein the pole plate 50 plays a role of magnetic conduction and is prepared from the magnetic conductor in the embodiment.