Solenoid valve

Patent metadata

Field	Value
Publication number	US-11448337-B2
Application number	US-201917287291-A
Country	US
Kind code	B2
Filing date	Oct 11, 2019
Priority date	Oct 31, 2018
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

Latch protrusions of an upper surface wall are latched into latch recesses of a first front-surface half wall and an upper end portion of a second front-surface half wall of a magnetic cover, and latch protrusions of the upper surface wall are latched into latch recesses of a first rear-surface half wall and an upper end portion of a second rear-surface half wall of the magnetic cover. Hook portions of the first front-surface half wall and a lower end portion of the second front-surface half wall are folded into a coupling groove of the valve body, and hook portions of the first rear-surface half wall and a lower end portion of the second rear-surface half wall are folded into a coupling groove of the valve body.

First claim

The invention claimed is:

1. A solenoid valve formed by coupling a main valve unit that includes a valve member movable to open and close a flow path and an electromagnetic operation unit that causes, by using an electromagnetic force, the valve member to perform opening and closing operations to each other,
wherein the main valve unit includes a valve body in which the valve member is disposed, and the valve body includes a coupling portion for coupling the electromagnetic operation unit, the coupling portion having a front surface in which a coupling groove is formed and a rear surface in which a coupling groove is formed,
wherein the electromagnetic operation unit includes a magnetic cover that has a quadrangular box shape and that covers the electromagnetic operation unit,
wherein the magnetic cover has a rectangular upper surface wall, a rectangular front surface wall, a rectangular rear surface wall, a rectangular left surface wall, and a rectangular right surface wall, and the upper surface wall, the front surface wall, the rear surface wall, the left surface wall, and the right surface wall are integrally formed by bending a single metal plate,
wherein a lower surface of the magnetic cover is open, and the coupling portion of the valve body is fitted into the magnetic cover through the lower surface,
wherein the front surface wall of the magnetic cover is formed by bringing a rectangular first front-surface half wall that is integrally contiguous to a front end of the left surface wall and a rectangular second front-surface half wall that is integrally contiguous to a front end of the right surface wall into contact with each other at a joint, and the rear surface wall is formed by bringing a rectangular first rear-surface half wall that is integrally contiguous to a rear end of the left surface wall and a rectangular second rear-surface half wall that is integrally contiguous to a rear end of the right surface wall into contact with each other at a joint,
wherein latch recesses or latch protrusions that are formed in or on an upper end portion of the first front-surface half wall and an upper end portion of the second front-surface half wall and latch protrusions or latch recesses that are formed on or in a front end portion of the upper surface wall are latched together at a front ridge portion at which the upper surface wall and the front surface wall are in contact with each other, and latch recesses or latch protrusions that are formed in or on an upper end portion of the first rear-surface half wall and an upper end portion of the second rear-surface half wall and latch protrusions or latch recesses that are formed on or in a rear end portion of the upper surface wall are latched together at a rear ridge portion at which the upper surface wall and the rear surface wall are in contact with each other, and
wherein, in a lower end portion of the magnetic cover, hook portions for engagement are formed on a lower end portion of the first front-surface half wall and a lower end portion of the second front-surface half wall of the front surface wall in such a manner as to be contiguous to each other via the corresponding joint, and hook portions for engagement are formed on a lower end portion of the first rear-surface half wall and a lower end portion of the second rear-surface half wall of the rear surface wall in such a manner as to be contiguous to each other via the corresponding joint, and
wherein the hook portions are folded and engaged into the coupling grooves formed in the coupling portion of the valve body such that the main valve unit and the electromagnetic operation unit are coupled to each other.

2. The solenoid valve according to claim 1 ,
wherein the coupling groove formed in the front surface of the coupling portion of the valve body has an engagement wall extending in a transverse direction of the valve body across the joint of the front surface wall and left and right side walls, and the coupling groove formed in the rear surface of the coupling portion of the valve body has an engagement wall extending in the transverse direction of the valve body across the joint of the rear surface wall and left and right side walls, the left and right side walls of each of the coupling grooves being gradually inclined in a depth direction the coupling groove and in a direction in which a gap between the left and right side walls becomes narrower,
wherein the magnetic cover and the valve body are coupled to each other by engaging the hook portions with the engagement walls of the coupling grooves,
wherein the hook portions of the first front-surface half wall and the second front-surface half wall are brought into contact with the left and right side walls of the coupling groove of the front surface, so that the first front-surface half wall and the second front-surface half wall are pressed in a direction in which the corresponding joint is closed, and the hook portions of the first rear-surface half wall and the second rear-surface half wall are brought into contact with the left and right side walls of the coupling groove of the rear surface, so that the first rear-surface half wall and the second rear-surface half wall are pressed in a direction in which the corresponding joint is closed.

3. The solenoid valve according to claim 1 ,
wherein the latch recesses are formed in the upper end portion of the first front-surface half wall, the upper end portion of the second front-surface half wall, the upper end portion of the first rear-surface half wall, and the upper end portion of the second rear-surface half wall in such a manner that the latch recesses formed in the first front-surface half wall and the second front-surface half wall are arranged at positions that do not intersect the corresponding joint and that the latch recesses formed in the first rear-surface half wall and the second rear-surface half wall are arranged at positions that do not intersect the corresponding joint, and the latch protrusions are formed on the front end portion and the rear end portion of the upper surface wall.

4. The solenoid valve according to claim 1 ,
wherein the first front-surface half wall and the second front-surface half wall forming the front surface wall of the magnetic cover are coupled to each other at the corresponding joint by engaging a dovetail formed on one of the front-surface half walls and a dovetail groove formed in another one of the front-surface half walls with each other, and the first rear-surface half wall and the second rear-surface half wall forming the rear surface wall of the magnetic cover are coupled to each other at the corresponding joint by engaging a dovetail formed on one of the rear-surface half walls and a dovetail groove formed in another one of the rear-surface half walls with each other.

Assignees

• Smc Corp

Inventors

• Mita Minehiko
• Morimoto Masaki

Classifications

• F16K31/0675 Primary

  Electromagnet aspects, e.g. electric supply therefor · CPC title

• F16K27/029

  Electromagnetically actuated valves · CPC title

• H01F7/16

  Rectilinearly-movable armatures (H01F7/17 takes precedence) · CPC title

• H01F7/081 Primary

  Magnetic constructions · CPC title

• F16K31/06 Primary

  using a magnet {, e.g. diaphragm valves, cutting off by means of a liquid} · CPC title