Information storage that includes a housing and a printed board provided on the housing, a printed board including a coil that forms an electromagnet in cooperation with a magnetic member, and method for manufacturing an electromagnetic latch unit

1. An information storage comprising:

a motor that drives a recording medium that stores data;

a slider that accesses the recording medium;

a carriage that moves the slider;

a housing that houses said recording medium, said motor, said slider, and said carriage, and includes a rotating part that can rotate and has an engagement part with the carriage at one end, and a first magnetic member at another end; and

a printed board being provided on and approximately parallel to a bottom surface of said housing, said printed board including a first controller that controls at least said carriage, and a second controller that controls said motor, wherein said housing further includes a second magnetic member that extends from the inside of said housing to said printed board, and said printed board further including a coil that forms an electromagnet in cooperation with the second magnetic member, and is arranged in accordance with a shape of the bottom surface of said housing.

2. An information storage according to claim 1 , wherein the first magnetic member is made of a ferromagnetic material, and the second magnetic member perforates said housing.

3. An information storage according to claim 2 , wherein the second magnetic member is pressed-fit into the housing, and adhered to the housing.

4. An information storage according to claim 1 , further comprising an elastic member that moves the moving part, wherein the first magnetic member is made of a soft magnetic material, and the second magnetic member perforates said housing.

5. An information storage according to claim 1 , wherein the first magnetic member is made of a ferromagnetic material, said housing having a dent part that forms a convex to the outside of the housing, accommodates the second magnetic member, and has a surface approximately parallel to another housing surface.

6. An information storage according to claim 1 , further comprising an elastic member that moves the moving part, the first magnetic member being made of a soft magnetic material, and said housing having a dent part that forms a convex to the outside of the housing, accommodates the second magnetic member, and has a surface approximately parallel to another housing surface.

7. An information storage according to claim 1 , wherein said housing is made of a magnetic material, the first magnetic material being made of a ferromagnetic material, said information storage further comprising a non-magnetic member arranged around the second magnetic material, and the non-magnetic member and the second magnetic member perforating said housing.

8. An information storage according to claim 1 , further comprising an elastic member that moves the moving part, and a non-magnetic member arranged around the second magnetic material, the housing being made of a magnetic material, the first magnetic member being made of a soft magnetic material, the non-magnetic member and the second magnetic member perforating said housing.

9. An information storage according to claim 1 , wherein said printed board is notched at part opposing to the second magnetic material.

10. An information storage according to claim 1 , further comprising a wall part on said printed board along the second magnetic member, the coil being wound around the wall part.

11. A method for manufacturing an electromagnetic latch unit that includes a latch part that moves between a latch position used to latch an end of a carriage opposite to the head with respect to a shaft, and an unlatch position used to unlatch the end, the carriage rotating the head around the shaft, the head being configured to record information in and reproduce the information from a recording medium arranged in a housing of an information storage, said latch part including a ferromagnetic member, and an electromagnet that includes a coil and a core, magnetizes the ferromagnetic member, and moves said latch part, said method comprising the steps of:

mounting the coil onto a printed board arranged outside a space of the housing which accommodates said latch part, the printed board controlling rotations of the carriage, and controlling latching and unlatching by the latch part; and

press-fitting the core in a hole provided in a surface of the housing which is mounted with the carriage.

12. A method according to claim 11 , further comprising the step of applying an adhesive to the hole at least around the surface.

13. An information storage comprising:

a head configured to record information in and reproduce the information from a recording medium;

a carriage rotating the head around a shaft;

a housing that accommodates said head and said carriage; and

an electromagnetic latch unit that latches an end of the carriage opposite to the head with respect to the shaft,

wherein said electromagnetic latch unit includes:

a latch part that moves between a latch position used to latch the end, and an unlatch position used to unlatch the end, said latch part including a ferromagnetic member; and

an electromagnet that includes a coil and a core, magnetizes the ferromagnetic member, and moves said latch part, the coil being arranged parallel to a surface of the housing which is mounted with the carriage and outside a space of the housing which accommodates said latch part.

14. An information storage according to claim 13 , wherein the housing is made of a ferromagnetic material, said information storage further comprising a non-magnetic member provided around the core.