Vibration motor and mobile terminal having the same
First Claim
1. A vibration motor comprising:
- a housing having a top surface, a bottom surface, and first to fourth side surfaces joining the top surface to the bottom surface, the first to fourth surfaces defining an inner circumferential surface of the housing;
a coil provided in the housing;
a moving portion provided in the housing, the moving portion being configured to reciprocate between the first and third side surfaces arranged opposite to each other;
an elastic member provided between the moving portion and the housing; and
a roller member provided in the housing and arranged to come into rolling contact with the top or bottom surface of the housing, the roller member having a cylindrical body and shaft coupling portions respectively protruded from both ends of the cylindrical body,wherein a diameter of the cylindrical body is greater than a thickness of the moving portion,wherein the roller member is coupled to the moving portion,wherein the elastic member comprises;
a first elastic member located between the moving portion and the first side surface; and
a second elastic member located between the moving portion and the third side surface, andwherein an elastic coefficient of the first elastic member is different from an elastic coefficient of the second elastic member.
1 Assignment
0 Petitions
Accused Products
Abstract
A vibration motor includes a housing, a coil, a moving portion, an elastic member and a roller member. The housing has a top surface, a bottom surface, and first to fourth side surfaces joining the top surface to the bottom surface, the first to fourth surfaces defining an inner circumferential surface of the housing. The coil is provided in the housing. The moving portion provided in the housing and the moving portion is configured to reciprocate between the first and third sides arranged opposite to each other. The elastic member is provided between the moving portion and the housing. The roller member is provided in the housing and arranged to come into rolling contact with the top or bottom surface of the housing.
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Citations
10 Claims
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1. A vibration motor comprising:
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a housing having a top surface, a bottom surface, and first to fourth side surfaces joining the top surface to the bottom surface, the first to fourth surfaces defining an inner circumferential surface of the housing; a coil provided in the housing; a moving portion provided in the housing, the moving portion being configured to reciprocate between the first and third side surfaces arranged opposite to each other; an elastic member provided between the moving portion and the housing; and a roller member provided in the housing and arranged to come into rolling contact with the top or bottom surface of the housing, the roller member having a cylindrical body and shaft coupling portions respectively protruded from both ends of the cylindrical body, wherein a diameter of the cylindrical body is greater than a thickness of the moving portion, wherein the roller member is coupled to the moving portion, wherein the elastic member comprises; a first elastic member located between the moving portion and the first side surface; and a second elastic member located between the moving portion and the third side surface, and wherein an elastic coefficient of the first elastic member is different from an elastic coefficient of the second elastic member. - View Dependent Claims (2, 3, 4, 5)
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6. A mobile terminal comprising:
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a terminal main body; and a vibration motor coupled to the terminal main body to vibrate the terminal main body, the vibration motor including; a housing having a top surface, a bottom surface, and first to fourth side surfaces joining the top surface to the bottom surface, the first to fourth side surfaces defining an inner circumferential surface of the housing; a coil provided in the housing; a moving portion provided in the housing, the moving portion configured to reciprocate between the first and third side surfaces arranged opposite to each other; an elastic member provided between the moving portion and the housing; and a roller member provided in the housing and arranged to come into rolling contact with the top or bottom surface of the housing, the roller member having a cylindrical body and shaft coupling portions respectively protruded from both ends of the cylindrical body, wherein a diameter of the cylindrical body is formed greater than a thickness of the moving portion, wherein the roller member is coupled to the moving portion, wherein the elastic member comprises; a first elastic member located between the moving portion and the first side surface; and a second elastic member located between the moving portion and the third side surface, and wherein an elastic coefficient of the first elastic member is different from an elastic coefficient of the second elastic member. - View Dependent Claims (7, 8, 9, 10)
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Specification