Electrical device and manufacture method for the same

• US 7,812,598 B2
• Filed: 05/21/2007
• Issued: 10/12/2010
• Est. Priority Date: 05/24/2006
• Status: Expired due to Fees

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: Yasuda, Atsushi, Miyagawa, Isao
• Primary Examiner(s): LeDynh; Bot L
• Application Number:
  US11/802,136
• Publication Number:
  US 20070290681A1
• Time in Patent Office: 1,240 Days
• Field of Search: 324/207.25, 732/90.R, 733/09, 733/17, 735/143.1, 735/143.9
• US Class Current: 324/207.25
• CPC Class Codes: G01F 23/38 using magnetically actuated indicating means
• CPC Class Codes: H01F 7/0289 Transducers, loudspeakers, moving coil arrangements
• CPC Class Codes: H01H 36/02 actuated by movement of a float carrying a magnet

Abstract

An electrical device includes a terminal connected with an electronic component, a pliant member which contacts a part of the terminal in a longitudinal direction of the terminal and covers a whole circumference of the part, and a casing for holding the electronic component and the terminal and the pliant member. The casing is molded by a resin material with the electronic component, the terminal and the pliant member being insert-molded. The end portion of the terminal of an opposite side to the electronic component extends to an outer side of the casing. One part of the pliant member is covered by the casing and the other part thereof is exposed to the outer side of the casing. The pliant member is compressed in a direction substantially orthogonal to the longitudinal direction of the terminal.

Claims

1. An electrical device, comprising:

an electronic component;

a terminal which is electrically conductive and connected with the electronic component;

a pliant resin member which contacts a part of the terminal in a longitudinal direction of the terminal and covers a whole circumference of the part; and

a casing for holding the electronic component, the terminal and the pliant resin member, wherein;

the casing is molded by a resin material with the electronic component, the terminal and the pliant resin member being insert-molded;

an end portion of the terminal is positioned at an outer side of the casing, the end portion being at an opposite side of the terminal to the electronic component;

one part of the pliant resin member is covered by the casing and an other part of the pliant resin member is exposed to the outer side of the casing; and

the pliant resin member is compressed in a direction which is substantially orthogonal to the longitudinal direction of the terminal, in the vicinity of an end surface of the casing.

2. The electrical device according to claim 1, wherein

the pliant resin member is constructed of a rubber.

5. A manufacture method for the electrical device according to claim 1, comprising:

an adhering process for fixedly contacting the pliant resin member with the terminal by molding;

a connecting process for electrically connecting the electronic component with the terminal to construct a subassembly, the connecting process being performed after the adhering process; and

a molding process for molding the casing after the connecting process, wherein

the molding process including a holding process, a filling process, a solidifying process, and a mold-releasing process,

the holding process being performed to hold the subassembly in a cavity of a molding die for the casing while the pliant resin member is pressed and compressed by the molding die,

the filling process being performed to fill the resin material of the casing into the cavity after the holding process,

the solidifying process being performed to solidify the resin material in the cavity,

the mold-releasing process being performed to take the casing have been molded out of the molding die after the solidifying process.

6. A manufacture method for the electrical device according to claim 2, comprising:

an adhering process for fixedly contacting the pliant resin member with the terminal by molding;

a connecting process for electrically connecting the electronic component with the terminal to construct a subassembly, the connecting process being performed after the adhering process; and

a molding process for molding the casing after the connecting process, wherein

the molding process including a holding process, a filling process, a solidifying process, and a mold-releasing process,

the holding process being performed to hold the subassembly in a cavity of a molding die for the casing while the pliant resin member is pressed and compressed by the molding die,

the filling process being performed to fill the resin material of the casing into the cavity after the holding process,

the solidifying process being performed to solidify the resin material in the cavity,

the mold-releasing process being performed to take the casing have been molded out of the molding die after the solidifying process.

9. The electrical device according to claim 1, wherein

the one part of the pliant resin member which is covered by the casing and the other part of the pliant resin member which is exposed to the outer side of the casing are respectively positioned at two opposite sides of the end surface of the casing.

10. The electrical device according to claim 1, wherein, due to the pliant resin member being compressed in said orthogonal direction, a width of the pliant resin member in the vicinity of the end surface of the casing is reduced relative to a remainder of the pliant resin member.

11. The electrical device according to claim 1, wherein the pliant resin member is compressed to a greater extent in said orthogonal direction in the vicinity of the end surface of the casing than it is compressed in any direction on a remainder of the pliant resin member.

12. The electrical device according to claim 9, wherein a width of said pliant resin member is smaller at the end surface of the casing, due to said compression, than a width of either the one part which is covered by the casing or the other part which is fully exposed to the outer side.

13. The manufacture method according to claim 5, wherein the pliant resin member is pressed and compressed by the molding die in said direction substantially orthogonal to the longitudinal direction of the terminal, and the molding die compresses the pliant resin member so that a width of the portion of the pliant resin member engaged by the molding die is reduced relative to a remainder of said pliant resin member.

14. The manufacture method according to claim 5, wherein, due to the pliant resin member being pressed and compressed by said molding die, upon conclusion of said solidifying process, a width of the pliant resin member in the vicinity of the end surface of the casing is reduced relative to a remainder of the pliant resin member.

15. The manufacture method according to claim 6, wherein the pliant resin member is pressed and compressed by the molding die in said direction substantially orthogonal to the longitudinal direction of the terminal, and the molding die compresses the pliant resin member so that a width of the portion of the pliant resin member engaged by the molding die is reduced relative to a remainder of said pliant resin member.

3. An electrical device, comprising:

an electronic component;

a terminal which is electrically conductive and connected with the electronic component;

a sheath member which is molded by a first resin material and fixed to a part of the terminal due to molding to house therein the electronic component;

a pliant resin member which contacts a part of the terminal in a longitudinal direction of the terminal and covers a whole circumference of the part; and

a casing for holding the sheath member in which the electronic component is housed, the terminal and the pliant resin member, wherein;

the casing is molded by a second resin material with the terminal, the pliant resin member and the sheath member housing therein the electronic component being insert-molded;

an end portion of the terminal is positioned at an outer side of the casing, the end portion being at an opposite side of the terminal to the electronic component;

one part of the pliant resin member is covered by the casing and an other part of the pliant resin member is exposed to the outer side of the casing; and

the pliant resin member is compressed in a direction which is substantially orthogonal to the longitudinal direction of the terminal, in the vicinity of an end surface of the casing.

4. The electrical device according to claim 3, wherein

the pliant resin member is constructed of a rubber.

7. A manufacture method for the electrical device according to claim 3, comprising:

an adhering process for fixedly contacting the pliant resin member with the terminal by molding;

a first molding process for molding the sheath member by the first resin material and simultaneously fixing the sheath member to the part of the terminal;

a connecting process for accommodating the electronic component in the sheath member and electrically connecting the electronic component with the terminal to construct a subassembly, the connecting process being performed after the first molding process; and

a second molding process for molding the casing after the connecting process, wherein

the second molding process includes a holding process, a filling process, a solidifying process, and a mold-releasing process,

the holding process being performed to hold the subassembly in a cavity of a molding die for the casing while the pliant resin member is pressed and compressed by the molding die,

the filling process being performed to fill the second resin material into the cavity after the holding process,

the solidifying process being performed to solidify the second resin material in the cavity,

the mold-releasing process being performed to take the casing have been molded out of the molding die after the solidifying process.

8. A manufacture method for the electrical device according to claim 4, comprising:

an adhering process for fixedly contacting the pliant resin member with the terminal by molding;

a first molding process for molding the sheath member by the first resin material and simultaneously fixing the sheath member to the part of the terminal;

a connecting process for accommodating the electronic component in the sheath member and electrically connecting the electronic component with the terminal to construct a subassembly, the connecting process being performed after the first molding process; and

a second molding process for molding the casing after the connecting process, wherein

the second molding process includes a holding process, a filling process, a solidifying process, and a mold-releasing process,

the holding process being performed to hold the subassembly in a cavity of a molding die for the casing while the pliant resin member is pressed and compressed by the molding die,

the filling process being performed to fill the second resin material into the cavity after the holding process,

the solidifying process being performed to solidify the second resin material in the cavity,

the mold-releasing process being performed to take the casing have been molded out of the molding die after the solidifying process.