JP6531126B2 - solenoid valve - Google Patents

Description

  The present invention relates to a solenoid valve.

  Generally, the solenoid valve includes a valve body that switches a flow path formed in the body, and a solenoid unit that moves the valve body. The solenoid unit includes a fixed core, a movable core adsorbed to the fixed core, and a biasing spring biasing the movable core in a direction away from the fixed core. Then, when power is supplied to the coil of the solenoid section, the movable core is attracted to the fixed core against the biasing force of the biasing spring. In accordance with the adsorption of the movable core to the fixed core, the valve moves and the flow path is switched.

  For example, as disclosed in Patent Document 1, such a solenoid valve is provided with a manual shaft that allows an operator to perform a manual operation such as a pressing operation or a rotation operation from the outside. When the operator manually operates the manual axis, the force pressing the movable core toward the fixed core against the biasing force of the biasing spring acts on the movable core from the manual shaft, and the movable core is directed to the fixed core Move. Thus, the valve moves and the flow path is switched. According to this, for example, the operation check of the solenoid valve can be performed without supplying power to the coil. In addition, in the manual axis, the manual axis may be self-held (locked) when the manual axis is manually operated by the operator by an operation amount such as a pressing amount or a rotation amount predetermined from an initial state. According to this, the state in which the flow path is switched can be maintained, and the operation check of the solenoid valve can be easily performed.

Japanese Utility Model Application Publication No. 1-168079

  However, if the movable core abuts against the fixed core while the manual axis is manually operated by the operator, the manual axis can not be manually operated from the initial state by a predetermined operation amount. I will. Then, the manual shaft is not held by itself, and it becomes impossible to maintain the switched flow state. Therefore, in order to prevent the movable core from coming into contact with the stationary core while the manual shaft is manually operated by the operator, it is necessary to increase the stroke of the movable core in advance. However, as the stroke of the movable iron core is increased, the amount of power supplied to the coil necessary for attracting the movable iron core toward the fixed iron core is increased.

  The present invention was made in order to solve the above-mentioned subject, and the object is to provide a solenoid valve which can control the amount of electric power supplied to a coil.

  The solenoid valve which solves the above-mentioned subject is provided with the valve body for switching the channel formed in the body, the solenoid part which moves the valve body, and the manual axis which can be operated manually, and the solenoid part is A coil, a fixed core, a movable core attracted to the fixed core when power is supplied to the coil, and a biasing spring biasing the movable core in a direction away from the fixed core When the manual shaft is manually operated, a pressing force for pressing the movable core toward the fixed core against the biasing force of the biasing spring is applied to the movable core, and the movable core is movable. It moves toward the fixed core, the valve moves, the flow path is switched, and the manual axis is self-held when the manual axis is manually operated from the initial state by a predetermined operation amount. A solenoid valve, the hand It has an elastically deformable elastic portion which allows manual operation of the manual shaft until the manual shaft reaches the operation amount even if the movable iron core abuts on the fixed iron core while the shaft is manually operated. The

  In the solenoid valve, a plug having a valve seat for defining the valve chamber accommodating the valve body in cooperation with the body and having a valve seat on which the valve body is seated, and accommodated in the valve chamber, and around the valve body A cylindrical valve guide which is disposed to guide the valve body and abuts against the movable iron core in the moving direction of the valve body, and on the opposite side of the plug with respect to the plug in the moving direction of the valve body An adapter that is disposed and is pressed by the manual shaft in response to the manual operation of the manual shaft and is movable in the moving direction of the valve body, the adapter being capable of abutting on the valve guide It is preferable that one of the manual shaft and the adapter has the elastic portion.

  In the electromagnetic valve, the adapter has the elastic portion, the elastic portion is inclined with respect to the biasing direction of the biasing spring, and the pressing force is applied to the movable core by manual operation of the manual shaft. The manual transmission shaft is continuous with the transmission surface to be transmitted and the operation direction side of the manual transmission shaft from the initial state in the transmission transmission surface, and the manual transmission shaft is in the initial state, orthogonal to the biasing direction of the biasing spring And a flat surface to which the biasing force of the biasing spring is transmitted when the manual operation is performed by the amount of the manual operation, and the manual shaft extends along the transmission surface and is in sliding contact with the transmission surface. A pressing surface for pressing the adapter toward the valve guide, and a direction opposite to the operation direction from the initial state of the manual shaft on the pressing surface are continuous and extend along the flat surface and the manual shaft From the initial state Preferably has a, a contact surface to surface contact with the flat surface rides on the flat surface when the serial is operated amount only manual operation.

  In the solenoid valve, the adapter has a plurality of the contact portions, and at least two of the plurality of contact portions are the valve in a direction orthogonal to the moving direction of the valve body with respect to the valve guide. It is preferable to be able to abut on both sides of the body.

  The solenoid valve includes a manual spring for biasing the adapter to the side opposite to the valve guide with respect to the plug in the moving direction of the valve body, and when the manual shaft is in the initial state, the adapter is the Preferably, the contact portion is separated from the valve guide by being biased by the biasing force of a manual spring to the opposite side to the plug with respect to the plug.

  Preferably, the solenoid valve includes a cover attached to the plug, and the cover holds the manual shaft so as to be capable of reciprocating in a direction orthogonal to the moving direction of the valve body.

  According to the present invention, the amount of power supplied to the coil can be suppressed.

Sectional drawing which shows the solenoid valve in 1st Embodiment. Line 2-2 in FIG. 1 sectional drawing. Sectional drawing which shows the state to which electric power was supplied to the coil of a solenoid part. FIG. 4 is a cross-sectional view taken along line 4-4 in FIG. Sectional drawing which shows the state in which the manual axis was manually operated by the predetermined operating quantity. 6 is a cross-sectional view taken along line 6-6 in FIG. Sectional drawing which shows the solenoid valve in 2nd Embodiment. Sectional drawing which shows the state in which the manual axis was manually operated by the predetermined operating quantity. Sectional drawing which shows the solenoid valve in 3rd Embodiment. Sectional drawing which shows the state in which the manual axis was manually operated by the predetermined operating quantity. Sectional drawing which shows the solenoid valve in 4th Embodiment. (A) is a 12-12 line sectional view in Drawing 11, and (b) is a sectional view of the circumference of a rotation control pin. Sectional drawing which shows the state in which the manual axis was manually operated by the predetermined operating quantity. (A) is a 14-14 sectional view taken on the line in FIG. 13, (b) is a sectional view of the circumference of a rotation control pin.

First Embodiment
Hereinafter, a first embodiment in which a solenoid valve is embodied will be described according to FIGS. 1 to 6.
As shown in FIG. 1, the solenoid valve 10 includes a body 11 made of nonmagnetic material (made of synthetic resin material). Further, the solenoid valve 10 includes a valve body 20 for switching a flow path formed in the body 11 and a solenoid unit 30 for moving the valve body 20. Attached to the body 11 is a connector portion CN for supplying power to the solenoid portion 30 through the external control unit.

  A supply port 11a, an output port 11b and an exhaust port 11c are formed on one side of the bottom of the body 11. The plug 12 is attached to one end in the longitudinal direction of the body 11 via a seal portion 12s made of a gasket or an O-ring. The plug 12 cooperates with the body 11 to define a valve chamber 13 that accommodates the valve body 20.

  The body 11 and the plug 12 are formed with a supply passage 14a communicating with the supply port 11a. Further, an output passage 14b in communication with the output port 11b and a discharge passage 14c in communication with the discharge port 11c are formed in the body 11. The supply port 11a is in communication with the inside of the valve chamber 13 through the supply passage 14a. The output port 11b is in communication with the inside of the valve chamber 13 via the output passage 14b. The discharge port 11c is in communication with the inside of the valve chamber 13 through the discharge passage 14c.

  In the plug 12, a supply side valve seat 12e on which the valve body 20 is seated is formed around the opening of the supply passage 14a to the valve chamber 13, which is an end surface facing the inside of the valve chamber 13. Furthermore, in the body 11, a discharge side valve seat 11e on which the valve body 20 is seated is formed around the opening of the discharge passage 14c to the valve chamber 13, which is an end surface facing the inside of the valve chamber 13. The valve body 20 is capable of coming into and coming out of contact with both valve seats 11e, 12e. In the valve chamber 13, a valve body spring 15 is interposed between the valve body 20 and the plug 12.

  In the valve chamber 13, a bottomed cylindrical valve guide 21 disposed around the valve body 20 and guiding the valve body 20 is accommodated. The valve guide 21 has a cylindrical portion 21a disposed around the valve body 20, and a bottom portion 21b continuous to the valve seat 11e side of the cylindrical portion 21a and extending in a direction orthogonal to the moving direction of the valve body 20. . The bottom 21b is formed with an escape hole 21h for avoiding contact with the valve seat 11e. The valve body 20 is in contact with the periphery of the relief hole 21 h in the bottom portion 21 b.

  At a bottom portion 21 b of the valve guide 21, a guide portion 21 f to be inserted into a guide groove 11 h formed in the body 11 is provided in a protruding manner. The valve guide 21 can be moved integrally with the valve body 20 in a state in which the inclination of the valve body 20 with respect to the movement direction is restricted by the guide portion 21 f being guided by the guide groove 11 h. The valve body 20 is urged together with the valve guide 21 in a direction away from the valve seat 12 e by the urging force of the valve spring 15. Thus, the valve body 20 moves together with the valve guide 21 in a state in which the inclination is regulated by the valve guide 21.

  An iron ventricle 16 is recessed at an end face of the body 11 opposite to the plug 12 in the longitudinal direction. In the body 11, a cylindrical magnetic frame 17 extends from the periphery of the iron ventricle 16 to a position beyond the end face opposite to the plug 12. Therefore, the plug 12 side of the magnetic frame 17 is embedded in the body 11, and the side opposite to the plug 12 protrudes from the end face of the body 11 opposite to the plug 12.

  The solenoid unit 30 includes a coil 31 disposed inside the magnetic frame 17, a columnar fixed core 32 fixed inside the coil 31, and is housed in the iron ventricle 16 and supplies power to the coil 31. The movable iron core 33 is attracted to the fixed iron core 32 by being driven, and the biasing spring 34 for urging the movable iron core 33 in a direction away from the fixed iron core 32. The biasing spring 34 is interposed between the fixed core 32 and the movable core 33. The movable core 33 is biased toward the valve chamber 13 by the biasing force of the biasing spring 34. The coil 31 is wound around the fixed iron core 32 via a resin bobbin 31a.

  As shown in FIG. 2, the movable core 33 includes a pair of valve pressing portions 33 a extending toward the valve guide 21. The valve guide 21 is in contact with a pair of valve pressing portions 33 a which is a part of the movable iron core 33 in the moving direction of the valve body 20. Then, in a state where the movable iron core 33 is biased toward the valve chamber 13 by the biasing spring 34, the valve guide 21 is pressed by the valve pressing portion 33a, and the valve body 20 is pressed against the valve seat 12e.

  As shown in FIGS. 3 and 4, when power is supplied to the coil 31, the coil 31 is excited to generate magnetic flux passing through the magnetic frame 17, the fixed iron core 32 and the movable iron core 33 around the coil 31. . Then, a suction force is generated in the fixed core 32 by the exciting action of the coil 31, and the movable core 33 is attracted to the fixed core 32 against the biasing force of the biasing spring 34, and the valve body 20 is attached with the valve body spring 15. While moving in a direction away from the valve seat 12e by force, the valve seat 11e is seated. As a result, the supply passage 14a is opened and the discharge passage 14c is closed, and the supply port 11a and the output port 11b communicate with each other via the supply passage 14a, the valve chamber 13 and the output passage 14b, and the output passage 14b and the valve chamber The communication between the output port 11b and the discharge port 11c through the discharge passage 14c and the discharge passage 14c is cut off.

  As shown in FIGS. 1 and 2, when the supply of power to the coil 31 is stopped, the attraction of the fixed core 32 due to the exciting action of the coil 31 disappears, and the movable core 33 is biased by the biasing spring 34. It moves to the direction away from fixed iron core 32 by this. Then, the valve guide 21 and the valve body 20 are pressed against the valve seat 12e against the biasing force of the valve spring 15 by the valve pressing portion 33a of the movable iron core 33, and the valve seat 12e is seated. Thereby, the supply passage 14a is closed and the discharge passage 14c is opened, and the output port 11b and the discharge port 11c communicate with each other through the output passage 14b, the valve chamber 13 and the discharge passage 14c, and the supply passage 14a, the valve chamber The communication between the supply port 11a and the output port 11b via the line 13 and the output passage 14b is cut off.

  An attachment recess 12 a is formed on the end surface of the plug 12 opposite to the solenoid unit 30. A pair of insertion holes 12 b extending in the moving direction of the valve body 20 are formed on the bottom surface of the mounting recess 12 a. The pair of insertion holes 12 b is opened in the valve chamber 13 and disposed around the valve seat 12 e.

  An adapter 40 is attached to the mounting recess 12a. Accordingly, the adapter 40 is disposed on the opposite side of the movable core 33 to the plug 12 in the moving direction of the valve body 20. The adapter 40 has a flat plate-like main body 40a accommodated in the mounting recess 12a, and a pair of contact parts 40b protruding from the main body 40a and respectively inserted into the pair of insertion holes 12b. Thus, the adapter 40 has a plurality of contact portions 40 b. Each contact portion 40 b is inserted into each insertion hole 12 b and protrudes into the valve chamber 13.

  Each contact part 40b is guided by each penetration hole 12b, and the adapter 40 is movable in the moving direction of the valve body 20. As shown in FIG. The tip end portion of each contact portion 40 b is disposed to face the cylindrical portion 21 a of the valve guide 21 in the moving direction of the valve body 20. The pair of contact portions 40 b can contact the valve guide 21 on both sides of the valve body 20 in a direction perpendicular to the moving direction of the valve body 20. A manual spring 40 c is interposed between the bottom surface of the mounting recess 12 a and the main body 40 a of the adapter 40. The manual spring 40 c moves the adapter 40 against the plug 12 in the moving direction of the valve body 20. Bias on the other side.

  As shown in an enlarged manner in FIG. 1, the main body 40 a of the adapter 40 has an elastic portion 41. The elastic portion 41 is formed in a bent plate shape, and is made of an elastically deformable resin. The elastic portion 41 is continuous with the end surface of the main body portion 40a opposite to the contact portion 40b, and has a plate-like inclined portion 41a inclined with respect to the urging direction of the urging spring 34, and the main portion of the inclined portion 41a. It has a plate-like flat portion 41b which is continuous with the end located opposite to 40a and extends in a direction perpendicular to the biasing direction of the biasing spring. The inclined portion 41a extends linearly so as to be separated from the movable iron core 33 in the moving direction of the valve body 20 from the edge of the main portion 40a toward the central portion of the main portion 40a, and the flat portion 41b is a valve It is disposed opposite to the central portion of the main body 40 a in the moving direction of the body 20.

  As shown in FIGS. 1 and 2, the solenoid valve 10 includes a manually operable manual shaft 42 and a cover 43 attached to the plug 12. The cover 43 is attached to one end face of the bottom of the body 11 at an end face of the plug 12 opposite to the solenoid part 30. The cover 43 has an opposing wall 43 a which is disposed to face the flat portion 41 b of the elastic portion 41 in the moving direction of the valve body 20. An insertion portion 42e of the manual shaft 42 is inserted between the flat portion 41b and the opposing wall 43a. The cover 43 holds the manual shaft 42 so as to be able to reciprocate in the direction orthogonal to the moving direction of the valve body 20. The manual shaft 42 is held by the cover 43 so that the insertion portion 42e can be inserted into and withdrawn from between the flat portion 41b and the opposing wall 43a.

  The state in which the insertion portion 42e of the manual shaft 42 protrudes most between the flat portion 41b and the opposing wall 43a is an initial state before the manual shaft 42 is manually operated by the operator. Then, when the manual axis 42 is manually operated by the operator so as to push the manual axis 42 in the direction orthogonal to the moving direction of the valve body 20 toward the cover 43 from the initial state, the manual axis 42 is inserted. The portion 42e is embedded between the flat portion 41b and the facing wall 43a. Therefore, the operation direction Y1 of the manual shaft 42 is a direction in which the manual shaft 42 is pushed along the direction orthogonal to the moving direction of the valve body 20 toward the cover 43. When the insertion portion 42e of the manual shaft 42 is most deeply inserted into the space between the flat portion 41b and the opposing wall 43a, the manual shaft 42 is manually operated by the operator by a predetermined operation amount (pushing amount) from the initial state. It has been manipulated.

  As shown in an enlarged manner in FIG. 1, the outer surface of the inclined portion 41 a facing the manual shaft 42 is inclined with respect to the biasing direction of the biasing spring 34, and the movable iron core 33 is fixed by manual operation of the manual shaft 42. The transmission surface 41 c is configured to transmit a pressing force for pressing toward the movable core 32 toward the movable core 33. The transmission surface 41c linearly extends so as to be separated from the movable iron core 33 in the movement direction of the valve body 20 as it goes from the edge of the main body 40a to the center of the main body 40a.

  The outer surface of the flat portion 41b facing the manual shaft 42 is continuous with the end edge 411c of the transmission surface 41c located on the operation direction Y1 side from the initial state of the manual shaft 42, and the biasing direction of the biasing spring 34 The flat surface 41d is configured such that the biasing force of the biasing spring 34 is transmitted when the manual shaft 42 is manually operated from the initial state by a predetermined operation amount. The end edge 411c located in the operation direction Y1 side from the initial state of the manual shaft 42 in the transmission surface 41c is an end edge located on the opposite side to the main body 40a in the transmission surface 41c. Accordingly, the flat surface 41 d is continuous with the end edge of the transmission surface 41 c opposite to the main body 40 a and extends in the direction perpendicular to the biasing direction of the biasing spring 34.

  The insertion portion 42 e of the manual shaft 42 has a pressing surface 42 a that extends along the transmission surface 41 c and is in sliding contact with the transmission surface 41 c to press the adapter 40 toward the valve guide 21. Further, the insertion portion 42e of the manual shaft 42 is continuous with the end edge 421a located on the opposite side to the operation direction Y1 from the initial state of the manual shaft 42 in the pressing surface 42a and extends along the flat surface 41d When the shaft 42 is manually operated by a predetermined amount of operation, it has a contact surface 42b that rides on the flat surface 41d and makes surface contact with the flat surface 41d. Therefore, the adapter 40 is pressed by the manual shaft 42 with the manual operation of the manual shaft 42 and can move in the moving direction of the valve body 20.

  As shown in FIGS. 2 and 4, when the manual shaft 42 is in the initial state, the adapter 40 is biased to the opposite side of the valve guide 21 with respect to the plug 12 by the biasing force of the manual spring 40c. The contact portion 40 b is separated from the valve guide 21.

Next, the operation of the first embodiment will be described.
As shown in FIGS. 5 and 6, when the manual shaft 42 is manually operated from the initial state, the pressing surface 42a presses the adapter 40 toward the valve guide 21 while being in sliding contact with the transmission surface 41c. Then, the adapter 40 moves toward the valve guide 21 against the biasing force of the manual spring 40c, and the pair of contact portions 40b is orthogonal to the moving direction of the valve body 20 with respect to the valve guide 21. The valve guide 21 and the movable iron core 33 are pressed against the fixed iron core 32 against the biasing force of the biasing spring 34 by abutting on both sides of the valve body 20 in the direction. At this time, the pair of contact parts 40b contact the valve guide 21 on both sides of the valve body 20 in the direction orthogonal to the moving direction of the valve body 20, and the valve guide 21 and the movable iron core 33 The valve guide 21 and the movable iron core 33 are difficult to tilt in the moving direction of the valve body 20.

  Therefore, when the manual shaft 42 is manually operated, a pressing force for pressing the movable core 33 toward the fixed core 32 against the biasing force of the biasing spring 34 is exerted on the movable core 33. Then, along with the movement of the valve guide 21 toward the fixed iron core 32, the valve body 20 is moved by the biasing force of the valve body spring 15, and the flow path is switched. Therefore, the transmission surface 41 c is inclined with respect to the biasing direction of the biasing spring 34, and transmits the pressing force for pressing the movable core 33 toward the fixed core 32 toward the movable core 33 by the manual operation of the manual shaft 42. Let

  Furthermore, even if the movable core 33 abuts on the fixed core 32 while the manual shaft 42 is manually operated, the elastic portion 41 is elastically deformed until the manual shaft 42 reaches a predetermined operation amount, and the manual shaft 42 manual operations are allowed. Then, when the manual shaft 42 is manually operated by a predetermined amount of operation, the contact surface 42b rides on the flat surface 41d and makes surface contact with the flat surface 41d. Thereby, the biasing force of the biasing spring 34 is transmitted to the flat surface 41 d and received by the contact surface 42 b. Therefore, the biasing force of the biasing spring 34 is transmitted to the flat surface 41 d when the manual shaft 42 is manually operated from the initial state by a predetermined operation amount. At this time, since the biasing force of the biasing spring 34 does not act on the transmission surface 41 c, the biasing force of the biasing spring 34 causes the manual shaft 42 to be pushed back in the direction opposite to the operation direction Y1 from the initial state. It does not act on the shaft 42. Therefore, when the manual shaft 42 is manually operated from the initial state by a predetermined operation amount, the manual shaft 42 is self-held (locked), and the state in which the flow path is switched is maintained. Thus, the operation check of the solenoid valve 10 is performed without supplying power to the coil 31.

The following effects can be obtained in the first embodiment.
(1) Even if the movable iron core 33 abuts on the fixed iron core 32 while the manual shaft 42 is manually operated, the solenoid valve 10 operates until the manual shaft 42 reaches a predetermined operation amount. An elastic portion 41 that allows manual operation is provided. Therefore, it is not necessary to previously increase the stroke of the movable core 33 in order to avoid the movable core 33 from coming into contact with the fixed core 32 while the manual shaft 42 is manually operated by the operator. . As a result, the amount of power supplied to the coil 31 necessary for adsorbing the movable core 33 toward the fixed core 32 can be reduced.

  (2) The solenoid valve 10 includes the plug 12, the valve guide 21, and the adapter 40, and the adapter 40 includes the contact portion 40 b that can contact the valve guide 21. The adapter 40 has an elastic portion 41. Such a configuration is suitable as the configuration of the solenoid valve 10 that can perform the operation check of the solenoid valve 10 without supplying power to the coil 31.

  (3) The elastic part 41 has the transmission surface 41c and the flat surface 41d. The manual shaft 42 has a pressing surface 42 a and a contact surface 42 b. According to this, when the elastic portion 41 is provided in the adapter 40, the movable iron core 33 is fixed to the fixed iron core 32 by performing the manual operation of the manual shaft 42 and pressing the transmission surface 41c with the pressing surface 42a. The pressing force directed toward the movable core 33 is transmitted to the movable core 33, the movable core 33 moves toward the fixed core 32, and the valve body 20 moves to switch the flow path. Further, when the manual shaft 42 is manually operated by a predetermined amount of operation, the biasing force of the biasing spring 34 is transmitted to the flat surface 41 d and received by the contact surface 42 b. Therefore, the force by which the manual shaft 42 is pushed back in the direction opposite to the operation direction Y1 from the initial state by the biasing force of the biasing spring 34 does not act on the manual shaft 42, and the manual shaft 42 is predetermined from the initial state. When the manual operation is performed by the operation amount, the manual shaft 42 is self-held, and the flow path can be maintained switched.

  (4) The adapter 40 has a pair of contact portions 40 b, and the pair of contact portions 40 b sandwich the valve body 20 in the direction orthogonal to the moving direction of the valve body 20 with respect to the valve guide 21. It is possible to abut on both sides. According to this, for example, the valve guide 21 and the movable iron core 33 are provided in comparison with the case where only one contact portion 40 b is provided in the adapter 40 and the one contact portion 40 b contacts the valve guide 21. Can be made difficult to incline with respect to the moving direction of the valve body 20. Therefore, it is not necessary to previously increase the stroke of the movable iron core 33 by the amount by which the valve guide 21 and the movable iron core 33 tilt, so the coil 31 necessary for attracting the movable iron core 33 toward the fixed iron core 32 is required. Power supply can be further reduced.

  (5) For example, when the manual shaft 42 is in the initial state, when the pair of contact portions 40 b is in contact with the valve guide 21, the pair of contact portions 40 b directs the valve seat 12 e of the valve guide 21 The movement is hindered, and the valve body 20 may not be seated on the valve seat 12e, which may cause a seal failure. Therefore, when the manual shaft 42 is in the initial state, the adapter 40 is biased by the biasing force of the manual spring 40 c to the opposite side to the valve guide 21 with respect to the plug 12, and the pair of contact portions 40 b Away from According to this, since the movement of the valve guide 21 toward the valve seat 12e is not impeded by the pair of contact portions 40b, the valve body 20 can be reliably seated on the valve seat 12e, and the sealing performance is good. It can be

  (6) The cover 43 reciprocates the manual shaft 42 in the direction orthogonal to the moving direction of the valve body 20. According to this, it is possible to prevent the manual shaft 42 from being detached from the solenoid valve 10 and to integrate the manual shaft 42 with the solenoid valve 10.

  (7) Since the elastic portion 41 is elastically deformed to allow manual operation of the manual shaft 42, the manual shaft 42, the adapter 40, the valve guide 21 and the like can not be forced while the manual shaft 42 is manually operated. The force does not act, and the durability of each part can be improved.

  (8) In the present embodiment, when the manual shaft 42 is manually operated, the valve guide 21 is not easily inclined with respect to the moving direction of the valve body 20. It can be made to sit and the sealing performance can be improved.

  (9) The operating direction Y1 of the manual shaft 42 is a direction orthogonal to the moving direction of the valve body 20. According to this, as compared with the case where the operation direction Y1 of the manual shaft 42 is the direction along the moving direction of the valve body 20, for example, the physique along the moving direction of the valve body 20 in the solenoid valve 10 is miniaturized. can do.

Second Embodiment
Hereinafter, a second embodiment in which the solenoid valve is embodied will be described according to FIGS. 7 and 8. In the embodiment described below, the same components as those of the first embodiment already described are denoted by the same reference numerals, and the overlapping description will be omitted or simplified. The electromagnetic valve of the second embodiment is different from that of the first embodiment in that the adapter does not have an elastic portion, but the manual shaft has an elastic portion. Therefore, one of the manual shaft and the adapter may have an elastic portion.

  As shown in FIGS. 7 and 8, the end face of the main body 40a of the adapter 40 on the opposite side to the contact part 40b has a first surface 50a inclined with respect to the biasing direction of the biasing spring 34, and And a second surface 50b continuous with the first surface 50a and extending in a direction perpendicular to the biasing direction of the biasing spring 34.

  The manual shaft 42 has an elastic portion 51. The elastic portion 51 is formed in a bent plate shape, and is made of an elastically deformable resin. The elastic portion 51 has a pressing surface 51 a extending along the first surface 50 a and in sliding contact with the first surface 50 a to press the adapter 40 toward the valve guide 21. In addition, the elastic portion 51 is continuous with the end edge 511a located on the opposite side to the operation direction Y1 from the initial state of the manual shaft 42 in the pressing surface 51a, and extends along the second surface 50b while the manual shaft 42 is It has a contact surface 51b which rides on the second surface 50b and is in surface contact with the second surface 50b when manually operated by a predetermined amount of operation. The elastic portion 51 is inserted between the adapter 40 and the opposing wall 43a.

Next, the operation of the second embodiment will be described.
When the manual shaft 42 is manually operated from the initial state, the pressing surface 51a presses the adapter 40 toward the valve guide 21 while being in sliding contact with the first surface 50a. Then, the adapter 40 moves toward the valve guide 21 against the biasing force of the manual spring 40c, and the pair of contact portions 40b is orthogonal to the moving direction of the valve body 20 with respect to the valve guide 21. The valve guide 21 and the movable iron core 33 are pressed against the fixed iron core 32 against the biasing force of the biasing spring 34 by abutting on both sides of the valve body 20 in the direction.

  Therefore, when the manual shaft 42 is manually operated, a pressing force for pressing the movable core 33 toward the fixed core 32 against the biasing force of the biasing spring 34 is exerted on the movable core 33. Then, along with the movement of the valve guide 21 toward the fixed iron core 32, the valve body 20 is moved by the biasing force of the valve body spring 15, and the flow path is switched. Therefore, the pressing surface 51 a of the elastic portion 51 is inclined with respect to the biasing direction of the biasing spring 34, and the pressing force for pressing the movable core 33 toward the fixed core 32 by the manual operation of the manual shaft 42 is the movable core 33. Function as a transmission surface to be transmitted toward the

  Furthermore, even if the movable core 33 abuts on the fixed core 32 while the manual shaft 42 is manually operated, the elastic portion 51 is elastically deformed until the manual shaft 42 reaches a predetermined operation amount, and the manual shaft 42 manual operations are allowed. Then, when the manual shaft 42 is manually operated by a predetermined operation amount, the contact surface 51b rides on the second surface 50b and makes surface contact with the second surface 50b. Thereby, the biasing force of the biasing spring 34 is transmitted to the second surface 50 b and received by the contact surface 51 b. Therefore, the contact surface 51b of the elastic portion 51 is a flat surface to which the biasing force of the biasing spring 34 is transmitted when the manual shaft 42 is manually operated by a predetermined operation amount. At this time, since the biasing force of the biasing spring 34 does not act on the pressing surface 51a, the biasing force of the biasing spring 34 causes the manual shaft 42 to be pushed back in the direction opposite to the operation direction Y1 from the initial state. It does not act on the shaft 42. Therefore, when the manual shaft 42 is manually operated from the initial state by a predetermined operation amount, the manual shaft 42 is self-held (locked), and the state in which the flow path is switched is maintained. According to the second embodiment, the same effects as the effects described in (1) and (2) and (4) to (9) of the first embodiment can be obtained.

Third Embodiment
Hereinafter, a third embodiment in which the solenoid valve is embodied will be described according to FIGS. 9 and 10.
As shown in FIGS. 9 and 10, the solenoid valve 60 includes a body 61 made of nonmagnetic material (made of synthetic resin). The body 61 is disposed between the first body 611 forming the flow path and accommodating the valve body 70, the second body 612 accommodating the solenoid portion 80, and the first body 611 and the second body 612. And an intermediate body 613. The valve body 70 switches the flow path. The solenoid unit 80 moves the valve 70.

  An air supply port 61 a and an output port 61 b are formed in the first body 611. Further, in the first body 611, a valve chamber 62 in which the valve body 70 is accommodated is formed. The valve chamber 62 is in communication with the air supply port 61 a and in communication with the output port 61 b. A valve seat 61e on which the valve body 70 is seated is formed around the opening of the output port 61b to the valve chamber 62, which is an end surface facing the valve chamber 62 in the first body 611. The valve body 70 is capable of coming into and coming out of contact with the valve seat 61e.

  A magnetic frame 63 is embedded in the second body 612. The solenoid unit 80 is attracted to the fixed core 82 by supplying power to the coil 81 disposed inside the magnetic frame 63, the columnar fixed core 82 fixedly disposed inside the coil 81, and the coil 81. And a biasing spring 84 for biasing the movable core 83 away from the fixed core 82. The fixed core 82 is disposed closer to the first body 611 than the movable core 83, and protrudes from the inside of the second body 612 into the middle body 613. The end face of the fixed iron core 82 on the side of the intermediate body 613 abuts on the open end of the first body 611 on the side of the intermediate body 613. The valve chamber 62 is partitioned by the first body 611 and the fixed iron core 82.

  In the valve chamber 62, a bottomed cylindrical valve guide 71 disposed around the valve body 70 and guiding the valve body 70 is accommodated. The valve guide 71 has a columnar projecting portion 71 a that penetrates the fixed core 82 and abuts on the movable core 83. A restricting ring 64 is attached to the inner surface of the first body 611 that forms the valve chamber 62. The biasing spring 84 is interposed between the restricting ring 64 and the valve guide 71, and biases the movable core 83 away from the fixed core 82 via the valve guide 71.

  A valve body spring 65 is interposed between the valve guide 71 and the valve body 70 to bias the valve body 70 toward the valve seat 61e. Further, the valve guide 71 has a restricting protrusion 71 f that restricts the movement of the valve 70 toward the valve seat 61 e.

  When power is supplied to the coil 81, the coil 81 is excited, and a magnetic flux passing through the magnetic frame 63, the fixed iron core 82 and the movable iron core 83 is generated around the coil 81. Then, a suction force is generated in the fixed core 82 by the exciting action of the coil 81, the movable core 83 is attracted to the fixed core 82 against the biasing force of the biasing spring 84, and the valve guide 71 is pressed by the movable core 83. And moves in a direction away from the fixed core 82. Then, the valve body 70 is moved toward the valve seat 61e by the biasing force of the valve body spring 65, and is seated on the valve seat 61e. As a result, the output port 61 b is closed, and the communication between the air supply port 61 a and the output port 61 b via the valve chamber 62 is cut off.

  When the supply of power to the coil 81 is stopped, the attractive force of the fixed core 82 due to the exciting action of the coil 81 disappears, and the movable core 83 moves away from the fixed core 82 by the biasing force of the biasing spring 84. Do. At this time, the valve body spring 65 biases the valve body 70 toward the valve seat 61e, but the movement of the valve body 70 toward the valve seat 61e in the valve body 70 is restricted by the regulation projection 71f, and the valve body 70 is moved from the valve seat 61e. The separated state is maintained. Thereby, the output port 61 b is opened, and the communication between the air supply port 61 a and the output port 61 b through the valve chamber 62 is permitted.

  An attachment recess 61 c is formed on the end face of the second body 612 opposite to the first body 611. An adapter 85 is attached to the mounting recess 61c. The adapter 85 is in contact with the end face of the movable core 83 opposite to the fixed core 82. The adapter 85 is movable in the movement direction of the valve 70 in the mounting recess 61 c.

  The end face of the adapter 85 opposite to the movable iron core 83 is a first surface 85a inclined with respect to the biasing direction of the biasing spring 84, and continuous with the first surface 85a and the biasing direction of the biasing spring 84 And a second surface 85 b extending in a direction orthogonal to

  The solenoid valve 60 includes a manually operable manual shaft 86 and a cover 87 attached to the second body 612. The cover 87 has an opposing wall 87 a disposed opposite to the adapter 85 in the moving direction of the valve body 20. The manual shaft 86 also has an elastic portion 91. The elastic portion 91 is in the form of a bent plate, and is made of an elastically deformable resin. The elastic portion 91 has a pressing surface 91 a that extends along the first surface 85 a and is in sliding contact with the first surface 85 a to press the adapter 85 toward the valve guide 71. The elastic portion 91 is continuous with an end edge 911a located on the pressing surface 91a opposite to the operation direction Y1 from the initial state of the manual shaft 86, and extends along the second surface 85b while the manual shaft 86 is It has a contact surface 91b which rides on the second surface 85b and is in surface contact with the second surface 85b when manually operated by a predetermined amount of operation. The elastic portion 91 is inserted between the adapter 85 and the opposing wall 87a.

  The cover 87 reciprocates the manual shaft 86 in the direction perpendicular to the moving direction of the valve 70. The manual shaft 86 is held by the cover 87 so that the elastic portion 91 can be inserted into and withdrawn from the adapter 85 and the opposing wall 87a.

Next, the operation of the third embodiment will be described.
When the manual shaft 86 is manually operated from the initial state, the pressing surface 91 a presses the adapter 85 toward the valve guide 71 while being in sliding contact with the first surface 85 a. Then, the adapter 85 and the movable core 83 move against the biasing force of the biasing spring 84 toward the fixed core 82, and the valve guide 71 is pressed by the movable core 83 and moves away from the fixed core 82. . Then, the valve body 70 is moved toward the valve seat 61 e by the biasing force of the valve body spring 65 to switch the flow path.

  Therefore, when the manual shaft 86 is manually operated, a pressing force for pressing the movable core 83 toward the fixed core 82 against the biasing force of the biasing spring 84 is exerted on the movable core 83. Therefore, the pressing surface 91 a of the elastic portion 91 is inclined with respect to the biasing direction of the biasing spring 84, and the pressing force for pressing the movable core 83 toward the fixed core 82 by the manual operation of the manual shaft 86 is the movable core 83. Function as a transmission surface to be transmitted toward the

  Furthermore, even if the movable core 83 abuts on the fixed core 82 while the manual shaft 86 is manually operated, the elastic portion 91 is elastically deformed until the manual shaft 86 reaches a predetermined operation amount, and the manual shaft 86 manual operations are allowed. Then, when the manual shaft 86 is manually operated by a predetermined operation amount, the contact surface 91b rides on the second surface 85b and makes surface contact with the second surface 85b. Thereby, the biasing force of the biasing spring 84 is transmitted to the second surface 85 b and received by the contact surface 91 b. Therefore, the contact surface 91 b of the elastic portion 91 is a flat surface to which the biasing force of the biasing spring 84 is transmitted when the manual shaft 86 is manually operated by a predetermined operation amount. At this time, since the biasing force of the biasing spring 84 does not act on the pressing surface 91a, the biasing force of the biasing spring 84 causes the manual shaft 86 to be pushed back in the direction opposite to the operation direction Y1 from the initial state. It does not act on the shaft 86. Therefore, when the manual shaft 86 is manually operated from the initial state by a predetermined operation amount, the manual shaft 86 is self-held (locked), and the state in which the flow path is switched is maintained. According to the third embodiment, the same effect as the effect described in (1) of the first embodiment can be obtained.

Fourth Embodiment
Hereinafter, a fourth embodiment in which the solenoid valve is embodied will be described with reference to FIGS.
As shown in FIGS. 11 to 14, the manual shaft 95 has a rotation axis extending in a direction orthogonal to the moving direction of the valve body 20, and is held by the cover 43 rotatably around the rotation axis. . Therefore, the operation direction of the manual shaft 95 is a rotation direction around a rotation axis extending in a direction orthogonal to the movement direction of the valve body 20. The manual shaft 95 has a cylindrical operation portion 96, and an opposing portion 97 which is continuous with the operation portion 96 and in which a part of the elastic portion 98 is disposed to face. As shown in an enlarged manner in FIGS. 11 and 13, in the opposing portion 97, the pressing surface 97a disposed opposite to the elastic portion 98 when the manual shaft 95 is in the initial state and the manual shaft 95 are predetermined from the initial state. It has a contact surface 97b which rides on the elastic portion 98 and is in surface contact with the elastic portion 98 when the operator manually operates the operation amount (rotation amount). The pressing surface 97 a and the contact surface 97 b extend in directions orthogonal to each other.

  As shown in FIGS. 12A and 14A, the operation portion 96 is formed with a groove 96a into which the rotation restricting pin 99 is inserted. The rotation restricting pin 99 is fixed to the cover 43, for example. The groove 96a has a first rotation restricting surface 961a disposed opposite to the outer peripheral surface of the rotation restricting pin 99 when the manual shaft 95 is in the initial state, and the manual shaft 95 by the operator by a predetermined operation amount from the initial state. And a second rotation restricting surface 962a disposed opposite to the outer peripheral surface of the rotation restricting pin 99 when manually operated. The first rotation restricting surface 961a and the second rotation restricting surface 962a extend in directions orthogonal to each other.

  Then, when the manual shaft 95 is manually operated by a predetermined operation amount as shown in FIG. 14B from the initial state shown in FIG. 12B, the second rotation regulating surface 962a rotates. It is disposed opposite to the outer peripheral surface of the restriction pin 99. When the operator further tries to manually operate the manual shaft 95, the second rotation restricting surface 962a comes in contact with the outer peripheral surface of the rotation restricting pin 99, the manual operation of the manual shaft 95 is restricted, and the manual shaft 95 is rotated. Is regulated.

  Further, when returning the manual shaft 95 from the state in which the manual shaft 95 is manually operated by a predetermined operation amount to the position of the initial state, the manual shaft 95 is manually operated by the predetermined operation amount from the initial state. The manual shaft 95 is manually operated in the direction opposite to the operating direction. Then, the first rotation restricting surface 961 a is disposed to face the outer peripheral surface of the rotation restricting pin 99. When the operator further tries to manually operate the manual shaft 95, the first rotation restricting surface 961a contacts the outer peripheral surface of the rotation restricting pin 99, the manual operation of the manual shaft 95 is restricted, and the manual shaft 95 is rotated. Is regulated. In this embodiment, the rotation of the manual shaft 95 is performed in a range of 90 degrees around the rotation axis.

  When the manual shaft 95 is manually operated from the initial state, the pressing surface 97 a presses the elastic portion 98. Then, the adapter 40 moves toward the valve guide 21 against the biasing force of the manual spring 40c, and the pair of contact portions 40b is orthogonal to the moving direction of the valve body 20 with respect to the valve guide 21. The valve guide 21 and the movable iron core 33 are pressed against the fixed iron core 32 against the biasing force of the biasing spring 34 by abutting on both sides of the valve body 20 in the direction. Then, along with the movement of the valve guide 21 toward the fixed iron core 32, the valve body 20 is moved by the biasing force of the valve body spring 15, and the flow path is switched.

  Even when the movable core 33 abuts against the fixed core 32 while the manual shaft 95 is manually operated, the elastic portion 98 is elastically deformed until the manual shaft 95 reaches a predetermined operation amount. Manual operation is acceptable. Then, when the manual shaft 95 is manually operated by a predetermined operation amount, the contact surface 97 b rides on the elastic portion 98 and makes surface contact with the elastic portion 98. Thereby, the biasing force of the biasing spring 34 is transmitted to the contact surface 97b and received by the contact surface 97b, and the biasing force of the biasing spring 34 pushes back the manual shaft 95 in the direction opposite to the operation direction from the initial state. Force is less likely to act on the manual shaft 95. Therefore, when the manual shaft 95 is manually operated from the initial state by a predetermined operation amount, the manual shaft 95 is self-held (locked), and the flow path is switched. According to the fourth embodiment, the same effect as the effect described in (1) of the first embodiment can be obtained.

The above embodiments may be modified as follows.
-In 1st and 2nd embodiment, the number of the contact parts 40b may be one, and may be three or more. For example, in the case where the number of contact portions 40 b is three or more, at least two of the plurality of contact portions 40 b sandwich the valve body 20 in the direction orthogonal to the moving direction of the valve body 20 with respect to the valve guide 21. It is only necessary to be able to abut on both sides.

In the first and second embodiments, for example, when the manual shaft 42 is in the initial state, the pair of contact portions 40 b may be in contact with the valve guide 21.
In each of the above-described embodiments, the operation direction of the manual shafts 42 and 86 may be, for example, a rotation direction around a direction along the movement direction of the valve body 20 as a rotation center.

  DESCRIPTION OF SYMBOLS 10, 60 ... Solenoid valve 11, 11 ... Body, 12 ... Plug, 12 e ... Valve seat, 13 ... Valve chamber, 20, 70 ... Valve body, 21, 71 ... Valve guide, 30, 80 ... Solenoid part, 31, 81 ... coil 32, 32 ... fixed core, 33, 83 ... movable core, 34, 84 ... biasing spring, 40, 85 ... adapter, 40b ... contact part, 40c ... manual spring, 41, 51, 91, 98 ... Elastic part, 41c ... Transmission surface, 41d ... Flat surface, 42, 86, 95 ... Manual shaft, 42a ... Pressing surface, 42b ... Contact surface, 43 ... Cover, 51a, 91a ... Pressing surface that functions as a transmission surface, 51b , 91b... A flat contact surface.

Claims (5)

A valve body for switching a flow path formed in the body, a solenoid unit for moving the valve body, and a manual shaft capable of manual operation,
The solenoid unit includes a coil, a fixed core, a movable core that is attracted to the fixed core when power is supplied to the coil, and a bias that biases the movable core away from the fixed core. Equipped with a spring,
When the manual shaft is manually operated, a pressing force for pressing the movable core toward the fixed core against the biasing force of the biasing spring is applied to the movable core, and the movable core is fixed A solenoid valve which moves toward the iron core, moves the valve body, switches the flow path, and manually operates the manual shaft when the manual shaft is manually operated from the initial state by a predetermined operation amount And
A plug having a valve seat for defining the valve chamber accommodating the valve body in cooperation with the body and having the valve seat seated thereon;
A tubular valve guide which is accommodated in the valve chamber and is disposed around the valve body to guide the valve body and abut on the movable iron core in the moving direction of the valve body;
An adapter that is disposed on the opposite side of the plug with respect to the plug in the moving direction of the valve body and is pressed by the manual shaft with the manual operation of the manual shaft and is movable in the moving direction of the valve body When,
An elastically deformable elastic portion which allows manual operation of the manual shaft until the manual shaft reaches the operation amount even if the movable core abuts on the stationary core while the manual shaft is manually operated. and, with a,
The adapter has an abutment that can abut the valve guide,
One of the said manual axis | shaft and the said adapter has the said elastic part, The solenoid valve characterized by the above-mentioned . The adapter has the elastic portion,
The elastic portion is inclined with respect to the biasing direction of the biasing spring, and the transmission surface for transmitting the pressing force toward the movable iron core by the manual operation of the manual shaft, and the manual shaft in the transmission surface When the manual shaft is manually operated by the amount of operation from the initial state continuously in the operation direction side from the initial state and orthogonal to the urging direction of the urging spring A flat surface to which the biasing force is transmitted,
The manual axis extends along the transmission surface and is in sliding contact with the transmission surface to press the adapter toward the valve guide, and an operating direction from the initial state of the manual axis on the pressing surface A contact surface which is continuous with the opposite side and extends along the flat surface, and when the manual axis is manually operated from the initial state by the operation amount, the flat surface comes on the flat surface and makes surface contact with the flat surface solenoid valve according to claim 1, characterized in that it has the a. The adapter has a plurality of the abutments,
At least two of the plurality of contact portions can contact the valve guide on both sides of the valve body in a direction perpendicular to the moving direction of the valve body. The solenoid valve according to claim 1 or claim 2 . A manual spring biasing the adapter against the plug in the direction of movement of the valve body opposite the valve guide;
When the manual shaft is in the initial state, the adapter is biased by the biasing force of the manual spring to the side opposite to the valve guide with respect to the plug, and the contact portion is separated from the valve guide solenoid valve according to any one of claims 1 to 3, characterized in that there. A cover attached to the plug;
The cover, electromagnetic according to the manual shaft to any one of claims 1 to 4, characterized in that it is reciprocally retained in a direction perpendicular to the moving direction of the valve body valve.

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