WO2014024659A1 - Electromagnetic solenoid - Google Patents

Electromagnetic solenoid Download PDF

Info

Publication number
WO2014024659A1
WO2014024659A1 PCT/JP2013/069594 JP2013069594W WO2014024659A1 WO 2014024659 A1 WO2014024659 A1 WO 2014024659A1 JP 2013069594 W JP2013069594 W JP 2013069594W WO 2014024659 A1 WO2014024659 A1 WO 2014024659A1
Authority
WO
WIPO (PCT)
Prior art keywords
receiving member
plunger
shock absorbing
absorbing material
impact
Prior art date
Application number
PCT/JP2013/069594
Other languages
French (fr)
Japanese (ja)
Inventor
輝英 山西
保男 寺田
真輝 日名子
一夫 藤原
洋 小岩
俊 四戸
俊樹 小笠原
剛資 大野
Original Assignee
本田技研工業株式会社
株式会社ミクニ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 本田技研工業株式会社, 株式会社ミクニ filed Critical 本田技研工業株式会社
Priority to CN201380042566.4A priority Critical patent/CN104541340B/en
Priority to BR112015002925-6A priority patent/BR112015002925B1/en
Publication of WO2014024659A1 publication Critical patent/WO2014024659A1/en
Priority to IN1239DEN2015 priority patent/IN2015DN01239A/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/088—Electromagnets; Actuators including electromagnets with armatures provided with means for absorbing shocks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet

Definitions

  • the present invention relates to an electromagnetic solenoid in which a plunger moves by excitation of an excitation coil.
  • the plunger In the electromagnetic solenoid, generally, the plunger is protruded by the excitation of the exciting coil, and when the exciting coil is demagnetized, the plunger is pushed to the original position by biasing means such as a spring or an external load.
  • biasing means such as a spring or an external load.
  • the fixing member stopper
  • the plunger and the fixing member are generally made of metal, so when the plunger collides with the fixing member, a metallic noise is generated.
  • an elastomeric buffer member is provided at both opposing collision portions of the plunger and the fixing member (stopper), and the shock absorbing member absorbs the impact due to the collision and the collision sound is generated. It is reduced. Further, in this electromagnetic solenoid, the shock absorbing member absorbs the impact by elastically deforming the plunger which is pushed in, thereby absorbing the impact, and after the elastic deformation of the shock absorbing member is elastically restored, the plunger is returned to the original position. It will be returned to the predetermined position.
  • the fixing member is movably provided with a receiving member that receives the collision of the plunger, and the receiving member is biased by a biasing means such as a spring to absorb the impact caused by the collision of the plunger by the biasing member.
  • a biasing means such as a spring to absorb the impact caused by the collision of the plunger by the biasing member.
  • the receiving member may hit part of the fixing member and a collision noise may occur.
  • the present invention has been made in view of the above circumstances, and provides an electromagnetic solenoid capable of reducing the collision noise generated due to the collision of the plunger and stopping the plunger at a predetermined position with high accuracy.
  • the purpose is that.
  • a movable yoke provided with a fixed portion in a fixed state inside a cylindrical coil portion and to which a plunger extending in the axial direction of the coil portion is attached is The movable yoke is moved forward along the axial direction of the coil portion, and the excitation of the coil portion advances the movable yoke together with the plunger away from the fixed portion, and the movable yoke is moved together with the plunger by demagnetization of the coil portion.
  • the fixed portion includes impact absorbing means for absorbing an impact when the plunger retracts with the movable yoke and collides with the fixed portion
  • the impact absorbing means is provided movably in the axial direction in an accommodating portion provided in the inside of the fixed portion, and a receiving member which recedes with the plunger upon receiving a collision of the plunger, and the accommodating portion.
  • a shock absorbing material is provided between the receiving member and an opposing surface formed in the housing portion and facing in a direction in which the receiving member retracts.
  • the impact is absorbed by retracting the plunger against the biasing force of the biasing member together with the receiving member. Collision noise is reduced. Further, since the buffer material is provided between the receiving member and the opposing surface formed in the housing portion and facing in the direction in which the receiving member retracts, the retracted receiving member does not collide with the opposing surface. The shock absorbing material reduces the collision noise. Therefore, the collision sound generated due to the collision of the plunger can be reduced.
  • the biasing member advances the plunger together with the plunger, but the restricting portion regulates its advancement, so that the plunger returns to a predetermined position and can be accurately positioned and stopped.
  • the stroke amount can be maintained constant.
  • the shock absorbing material is attached to the receiving member, and a gap is provided between the shock absorbing material and an inner wall surface along the moving direction of the receiving member of the accommodating portion. desirable.
  • the shock absorbing material since the shock absorbing material is attached to the receiving member, the shock absorbing material can be easily incorporated by accommodating the receiving member in the receiving portion of the fixed portion.
  • a gap is provided between the shock absorbing material and the inner wall surface along the moving direction of the receiving member of the accommodating portion, even if the shock absorbing material moves with the receiving member, the shock absorbing material interferes with the inner wall surface. There is no Therefore, the movement of the receiving member is smooth and the shock absorbing material is not damaged by the friction with the inner wall surface.
  • the shock absorbing material may be provided in the opposite side.
  • the cushioning material is not in contact with the biasing member.
  • the shock absorbing material since the shock absorbing material is in contact with the biasing member, the shock absorbing material and the biasing member do not interfere with each other. Therefore, the spring is not affected by the shock absorbing material, and the movement of the receiving member becomes smooth.
  • the impact is absorbed by the plunger retreating against the biasing force of the biasing member together with the receiving member, and the receding receiving member has the opposite surface.
  • the shock absorbing material reduces the collision noise without causing the collision.
  • the receiving member, which has once retreated is advanced together with the plunger by the biasing member, the advancing portion is restricted by the restricting portion, so that the plunger can return to a predetermined position and be accurately positioned and stopped. Therefore, the collision noise generated due to the collision of the plunger can be reduced, and the plunger can be always stopped at the predetermined position with high accuracy.
  • FIG. 1 is a cross-sectional view of a first embodiment of an electromagnetic solenoid according to an embodiment of the present invention. It is an expanded sectional view of a fixed part equally. It is a flowchart for explaining the operation of the electromagnetic solenoid according to the first embodiment.
  • fixed part which comprises the electromagnetic solenoid which concerns on the other embodiment of this invention is shown, (a) is sectional drawing of the fixing
  • FIG. 16F is a cross-sectional view of the fixing portion, FIG. 27F is a cross-sectional view of the fixing portion in the seventh embodiment, and FIG.
  • FIG. 1 is a cross-sectional view showing an electromagnetic solenoid according to a first embodiment of the present invention
  • FIG. 2 is an enlarged cross-sectional view of a fixing portion of the electromagnetic solenoid.
  • This electromagnetic solenoid is used, for example, to operate a fuel lever of a diesel internal combustion engine in a stopping direction to automatically shut down the engine, or to automatically perform reverse select locking in a four-wheeled manual transmission vehicle. It is.
  • the electromagnetic solenoid includes a plunger guide portion 11 and a fixed portion 12 which also serve as a yoke, a movable yoke 15 and a coil portion 16.
  • the plunger guide portion 11 and the fixed portion 12 are disposed to face each other in the direction of the axis O, and the movable yoke 15 having the cylindrical portion 15a is movable along the axial direction on the outer periphery of the fixed portion 12 It is provided.
  • a cylindrical coil portion 16 is provided on the outer peripheral side of the cylindrical portion 15 a and on the outer peripheral side of the plunger guide portion 11.
  • the fixed portion 12 and the plunger guide portion 11 are provided in a fixed state inside the cylindrical coil portion 16, and the movable yoke 15 is provided movably along the axial direction of the coil portion 16. .
  • the coil portion 16 moves the movable yoke 15 along the axis O, and includes a bobbin 16a and a coil 16b wound around the bobbin 16a.
  • Each of these members (the plunger guide portion 11, the fixed portion 12, the movable yoke 15, and the coil portion 16) is basically formed in rotational symmetry, that is, the cross section is formed in a circular shape and accommodated in the cylindrical housing 30 There is.
  • the movable yoke 15 advances so as to leave the fixed part 12 by excitation (ON state) of the coil part 16 by energization to the coil 16b, and retracts so as to approach the fixed part 12 by demagnetization (OFF state) of the coil part 16. It is supposed to In FIG. 1, the movable yoke 15 is moved to the plunger guide 11 side on the left side of the axis line O (ON state), and the movable yoke 15 is positioned on the fixed part 12 side on the right side of the axis line O OFF state is shown.
  • the movable yoke 15 is formed in a cup shape (a cylindrical shape with a bottom) by a cylindrical portion 15a extending along the direction of the axis O and a bottom portion 15b formed at the lower end of the cylindrical portion 15a. At the central portion, a convex portion 15c protruding upward is formed. A through hole penetrating to the lower surface of the bottom portion 15b is formed in the convex portion 15c. The tip of the plunger 20 is inserted into and fixed to the through hole. Further, the tip end portion of the plunger 20 protrudes upward from the convex portion 15 c.
  • the plunger 20 moves along the axis O together with the movable yoke 15. Further, a through hole 11a is formed in the plunger guide portion 11 along the axis O, and the plunger 20 is movably inserted into the through hole 11a via the two bearings 17 and 17. The tip of the plunger 20 is movable It is fixed to the yoke 15.
  • a ring-shaped bowl-shaped portion 21 is provided on the outer peripheral portion of the plunger guide portion 11, and the lower end portion of the housing 30 is engaged with the outer peripheral portion of the bowl-shaped portion 21.
  • the fixing portion 12 is formed by integrally forming the collar-like portion 22 at the upper end portion thereof, and the shock absorbing means 31 is provided inside the fixing portion 12. .
  • the impact absorbing means 31 absorbs an impact when the plunger 20 retracts with the movable yoke 15 and collides with the fixed portion 12 and is configured as follows. That is, first, the housing portion 32 is formed inside the fixed portion 12.
  • the housing portion 32 is formed in a substantially cylindrical shape, and the lower end is opened and the upper end is closed.
  • the housing portion 32 includes a cylindrical first housing portion 32a, and a second housing portion 32b coaxially formed with the first housing portion 32a at the upper end of the first housing portion 32a.
  • the diameter 32 b is smaller than that of the first accommodation portion 32 a.
  • a cylindrical large diameter portion 33 is formed coaxially with the first accommodation portion 32a on the lower end side of the first accommodation portion 32a.
  • the convex portion 15 c of the movable yoke 15 is accommodated in the large diameter portion 33 when the movable yoke 15 is retracted.
  • a receiving member 35 is provided movably in the direction of the axis (O) in the first accommodating portion 32a.
  • the receiving member 35 receives the collision of the plunger 20 which is retracted with the movable yoke 15, and retracts with the plunger 20, and is formed in a substantially cylindrical shape.
  • the receiving member 35 has a main body portion 35a axially slidable on the inner wall surface of the first housing portion 32a, a small diameter portion 35b formed on the upper end surface of the main body portion 35a with a smaller diameter than the main body portion 35a, and the small diameter portion A shaft 35c formed on the upper end face of the part 35b at a smaller diameter than the small diameter part 35b, and a receiving part 35d formed on the lower end face of the main body 35a at a smaller diameter than the main body 35a and receiving the collision of the plunger 20 Have.
  • the shaft portion 35c is accommodated in the second accommodation portion 32b, and a spring 36 as an urging member for urging the receiving member 35 in the forward direction (downward in FIG. 1) to the second accommodation portion 32b is the shaft. It accommodates so that the outer peripheral side of the part 35c may be enclosed.
  • the spring 36 is accommodated in a compressed state, the upper end of which is in contact with the upper surface of the second accommodation portion 32b, and the lower end of which is in contact with the upper peripheral portion of the small diameter portion 35b.
  • a regulation portion 37 is provided at the lower end portion of the first accommodation portion 32a.
  • the restricting portion 37 restricts the advancing receiving member 35 at a predetermined position to restrict further advancing.
  • the restricting portion 37 is formed of a ring-shaped plate, and is fixed by being fitted into an annular recess formed in the inner wall surface of the lower end portion of the first accommodating portion 32a.
  • the receiving portion 35d of the receiving member 35 is inserted into the inside of the restricting portion 37, and the tip (the lower end in FIG. 1) of the receiving portion 35 protrudes downward from the restricting portion 37.
  • the plunger 20 can collide with the receiving portion 35d.
  • the upper surface of the first accommodating portion 32a of the accommodating portion 32 is an opposing surface 38 which faces in the direction in which the receiving member 35 retreats (upward in FIG. 1).
  • the shock absorbing material 40 is provided between the receiving member 35 and the opposing surface 38.
  • the shock absorbing material 40 absorbs an impact when the main body 35 a of the receiving member 35 collides with the opposing surface 38, and is made of, for example, a ring-shaped rubber.
  • the ring-shaped cushioning material 40 is mounted on the outer peripheral surface of the small diameter portion 35 b of the receiving member 35 and is provided in contact with the upper surface of the main body portion 35 a.
  • a predetermined gap S is provided between the shock absorbing material 40 and the inner wall surface of the first housing portion (the inner wall surface along the moving direction of the receiving member).
  • the vertical length of the shock absorbing material 40 is determined such that the gap between the shock absorbing material 40 and the opposing surface 38 is the shaft portion of the receiving member 35 in a state where the receiving member 35 advances and contacts the regulating portion 37. It is set to be smaller than the gap between 35 c and the upper surface 38 a of the second accommodation portion 32 b. Therefore, when the receiving member 35 retracts (moves upward in FIG. 2), the shock absorbing material 40 collides with the opposing surface 38 to prevent further retraction of the receiving member 35, so the shaft portion 35c is the second accommodating portion Do not collide with the top of 32b.
  • the shock absorbing material 40 is mounted on the outer peripheral surface of the small diameter portion 35b of the receiving member 35, while the lower end of the spring 36 is in contact with the upper end surface of the small diameter portion 35b. Therefore, the cushioning material 40 and the spring 36 are not in contact with each other.
  • FIG. 3A shows a state in which the movable yoke 15 is advanced to be separated from the fixed portion 12 by exciting the coil portion 16 (see FIG. 1).
  • the plunger 20 fixed to the movable yoke 15 advances with the movable yoke 15 and is separated from the fixed portion 12.
  • the receiving member 35 of the shock absorbing means 31 is urged in the forward direction (downward in FIG. 3) by the spring 36 and abuts on the restricting portion 37 so that the further forward movement is restricted.
  • the plunger 20 is pushed by an external load (not shown) and retreats toward the fixed portion 12 together with the movable yoke 15
  • the plunger 20 collides with the receiving portion 35 d of the receiving member 35.
  • the plunger 20 is retracted together with the receiving member 35 against the biasing force of the spring 36, whereby the impact is absorbed and the collision noise is reduced.
  • the receiving member 35 is pushed back by the plunger 20, but since the shock absorbing material 40 is provided on the upper surface of the main body portion 35a of the receiving member 35, this buffer The material 40 collides with the facing surface 38. Therefore, the shock absorbing material 40 reduces the collision noise without the receding receiving member 35 colliding with the opposing surface 38.
  • the receiving member 35 once retracted is pushed in the forward direction by the biasing force of the spring 36 and advances with the plunger 20, but the main body 35a of the receiving member 35 As the lower surface of the plunger hits and the forward movement thereof is restricted by the restricting portion 37, the plunger 20 returns to the predetermined position and stops.
  • the plunger 20 when the coil portion 16 is demagnetized, the plunger 20 is pushed by the external load, and is retracted so as to approach the fixed portion 12 together with the movable yoke 15.
  • the plunger 20 When colliding with the receiving portion 35d, the plunger 20 is retracted together with the receiving member 35 against the biasing force of the spring 36, whereby the impact is absorbed and the collision noise is reduced.
  • the shock absorbing material 40 is attached to the receiving member 35, that is, the shock absorbing material 40 is provided between the receiving member 35 and the facing surface 38, the receding receiving member 35 has the facing surface 38.
  • the shock absorbing material 40 reduces the collision noise without causing a collision. Therefore, the collision noise generated due to the collision of the plunger 20 can be reduced.
  • the collision noise of the electromagnetic solenoid without both of the shock absorbing means 31 having the receiving member 35 and the spring 36 and the shock absorbing material 40 is about 74 dB, and the electromagnetic solenoid comprising only the shock absorbing means 31.
  • the impact noise of the electromagnetic solenoid having both the impact absorbing means 31 and the shock absorbing material 40 was about 50 dB, and it was confirmed that the impact noise was significantly reduced.
  • the receiving member 35 which has once retreated is advanced together with the plunger 20 by the biasing force of the spring 36, but its advancement is restricted by the restricting part 37, so that the plunger 20 returns to a predetermined position and can be accurately positioned and stopped. Therefore, the stroke amount of the plunger 20 can be always maintained constant.
  • the shock absorbing material 40 is attached to the small diameter portion 35b of the receiving member 35, and a gap is provided between the shock absorbing material 40 and the inner wall surface of the first accommodation portion 32a. Even if it moves with the member 35, the shock absorbing material 40 does not interfere with the inner wall surface. Therefore, the movement of the receiving member 35 is smooth and the shock absorbing material 40 is not damaged by the friction with the inner wall surface.
  • the shock absorbing material 40 is attached to the receiving member 35, by accommodating the receiving member 35 in the housing portion 32 of the fixed portion 12, the shock absorbing material 40 can be easily incorporated. Furthermore, the shock absorbing material 40 is mounted on the outer peripheral surface of the small diameter portion 35b of the receiving member 35, the lower end of the spring 36 is in contact with the upper end surface of the small diameter portion 35b, and the shock absorbing material 40 and the spring 36 are in contact. Because the shock absorber 40 and the spring 36 do not interfere with each other. Therefore, the spring 36 is not affected by the shock absorbing material 40, and the movement of the receiving member 35 becomes smooth.
  • FIGS. 4 (a) to 4 (g) are cross-sectional views showing other embodiments of the present invention.
  • the electromagnetic solenoid in the other embodiment shown in these figures differs from the electromagnetic solenoid in the first embodiment in the receiving member provided inside the fixed portion 12, the spring (biasing member),
  • the configuration and the arrangement position of the buffer material and the like, and the other components are the same as those of the first embodiment, and therefore the same components are denoted by the same reference numerals and the description thereof will be omitted.
  • the parts other than the fixing part 12 are the same as those of the first embodiment, so only the fixing part 12 is shown in FIGS. 4 (a) to 4 (g).
  • the shock absorbing material 41 is provided on the upper surface 38 a of the second accommodation portion 32 b of the fixed portion 12.
  • the upper surface 38 a is one of the facing surfaces 38 a facing in the backward direction of the receiving member 35.
  • the housing portion 32 is provided with the facing surface 38.
  • the buffer material 41 is formed in a substantially cylindrical shape, includes a large diameter portion 41a and a small diameter portion 41b, and a neck portion is formed between the large diameter portion 41a and the small diameter portion 41b.
  • a shock absorbing material 41 is provided to face the shaft portion 35 c of the receiving member 35 with the small diameter portion 41 b.
  • the diameter of the small diameter portion 41 b is larger than that of the shaft portion 35 c of the receiving member 35.
  • the upper end of the spring 36 is locked to the neck portion of the shock absorbing material 41.
  • the length of the cushioning material 41 in the vertical direction is determined by the gap between the cushioning material 41 and the shaft portion 35c of the reception member 35 in a state where the reception member 35 advances and abuts on the regulation portion 37. It is set so as to be smaller than the gap between the main body 35 a of 35 and the facing surface 38.
  • the shaft portion 35 c collides with the shock absorbing material 41 without the main body 35 a colliding with the opposing surface 38 in the receding receiving member 35, and the shock absorbing material 41 reduces the collision noise. Be done.
  • the shock absorbing material 41 is provided on the facing surface 38 a and is not attached to the receiving member 35, the movement of the receiving member 35 is smooth.
  • the cushioning material 42 is provided on the upper surface of the second accommodation portion 32b of the fixed portion 12 as in the second embodiment.
  • the portion 32 c is formed, and the shock absorbing material 42 is fitted into the convex portion 32 c.
  • the cushioning material 42 is formed in a cylindrical shape, and a concave portion is formed on the upper end surface thereof, and the concave portion is fitted to the convex portion 32 c.
  • the length of the cushioning material 42 in the vertical direction is determined by the gap between the cushioning material 42 and the shaft portion 35c of the reception member 35 in a state where the reception member 35 advances and abuts on the regulation portion 37. It is set so as to be smaller than the gap between the main body 35 a of 35 and the facing surface 38.
  • the shaft member 35 c collides with the shock absorbing material 42 without the main body 35 a colliding with the opposing surface 38 in the retracted receiving member 35.
  • the shock absorbing material 42 reduces the collision noise.
  • the shock absorbing material 42 is fitted into the convex portion 32 c, the shock absorbing material 42 can be easily positioned and attached.
  • the cushioning material 43 is provided on the upper surface 38a of the second accommodation portion 32b of the fixed portion 12 as in the second embodiment.
  • the cushioning material 43 is formed in a disk shape thinner than the cushioning material 41.
  • the upper end of the spring 36 is in contact with the surface of the shock absorbing material 43.
  • the thickness of the shock absorbing material 43 is such that the gap between the shock absorbing material 43 and the shaft portion 35 c of the receiving member 35 is the main body of the receiving member 35 in a state where the receiving member 35 advances and contacts the regulating portion 37. It is set to be smaller than the gap between the portion 35 a and the facing surface 38. According to such a configuration, the same effect as that of the second embodiment can be obtained.
  • the shock absorbing material 44 is attached to the shaft 35 c of the receiving member 35.
  • the cushioning material 44 is formed in a cylindrical shape, and a concave portion is formed on the lower end surface thereof, and the concave portion is fitted to the shaft portion 35c.
  • the upper surface (facing surface) 38 a of the second accommodation portion 32 b is one of the facing surfaces facing in the backward direction of the receiving member 35.
  • the length of the cushioning material 44 in the vertical direction is determined by the gap between the cushioning material 44 and the opposing surface 38 a in the main body portion of the cushioning member 35 in a state where the cushioning member 35 advances and contacts the regulating portion 37. It is set to be smaller than the gap between 35 a and the facing surface 38.
  • the buffer member 44 attached to the shaft portion 35c collides with the opposing surface 38a without the main body portion 35a colliding with the opposing surface 38, and the receding receiving member 35 collides with the opposing surface 38a.
  • the shock absorbing material 44 reduces the collision noise.
  • the cushioning material 45 is attached to the shaft portion 35c of the receiving member 35 as in the fifth embodiment. It differs from the embodiment. That is, the shock absorbing material 45 has a mounting shaft 45a on its lower surface. On the other hand, a mounting hole is formed in the shaft portion 35c, and the mounting shaft 45a is inserted into the mounting hole. Thereby, the shock absorbing material 45 is attached to the shaft 35 c of the receiving member 35. According to such a configuration, the effect can be obtained as in the fifth embodiment.
  • the cushioning material 46 is formed in a ring shape.
  • the shaft portion 35c of the receiving member 35 is. It is formed to be shorter than the shaft portion 35c in the first to sixth embodiments, and a shock absorbing material 46 is attached to the outer peripheral surface of the shaft portion 35c.
  • a predetermined gap is provided between the cushioning material 46 and the inner wall surface of the second accommodation portion 32b. The vertical length of the shock absorbing material 46 is determined by the gap between the shock absorbing material 46 and the opposing surface 38 a and the main body 35 a of the receiving member 35 in a state where the receiving member 35 advances and abuts against the restricting portion 37.
  • a recess is formed in the shaft portion 35c, and a spring 36a as a biasing member is inserted into the recess, and an upper end portion of the spring 36a is in contact with the opposing surface 38a.
  • the buffer member 46 attached to the shaft 35c collides with the opposing surface 38a without the main body 35a colliding with the opposing surface 38, and the receding receiving member 35 collides with the opposing surface 38a.
  • the shock absorbing material 46 reduces the collision noise.
  • the cushioning material 47 is mounted on the outer peripheral portion of the small diameter portion 35b of the receiving member 35 as in the first embodiment.
  • an annular outer flange 48a is formed on the outer peripheral portion of the small diameter portion 35b.
  • the cushioning material 47 is formed at its lower portion with an inner flange 48 b which protrudes in an annular manner inward.
  • the shock absorbing material 47 is mounted on the outer peripheral portion of the small diameter portion 35 b of the receiving member 35 by fitting the inner flange 48 b below the outer flange 48 a.
  • the length of the cushioning material 47 in the vertical direction is such that the gap between the cushioning material 47 and the opposing surface 38 is the shaft portion of the reception member 35 in a state where the reception member 35 advances and contacts the restriction portion 37 It is set to be smaller than the gap between 35 c and the upper surface 38 a of the second accommodation portion 32 b.
  • the same effect as that of the first embodiment can be obtained, and moreover, the shock absorbing material 47 can be firmly attached to the receiving member 35.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)

Abstract

The present invention provides an electromagnetic solenoid which makes it possible to reduce impact noise from plunger impact and to always accurately stop the plunger at a predetermined location. An impact absorbing means (31) is provided with: a receiving member (35) which retracts when subjected to the impact of a plunger (20); a spring (36) which urges the receiving member (35) in the direction of advance; and a restricting part (37) which restricts the receiving member (35) at a predetermined position, a buffer material (40) being provided between the receiving member (35) and an opposing surface (38). The impact caused by striking of the plunger (20) is therefore absorbed so the impact noise is reduced, the retracting receiving member (35) does not strike the opposing surface (38), and the impact noise is reduced by virtue of the buffer material (40). Furthermore, the plunger (20) can return to a predetermined location and be accurately positioned by means of the restricting part (37), and as a result it is possible to always maintain a constant amount of stroke of the plunger (20).

Description

電磁ソレノイドElectromagnetic solenoid
　本発明は、励磁コイルの励磁によりプランジャが移動する電磁ソレノイドに関する。 The present invention relates to an electromagnetic solenoid in which a plunger moves by excitation of an excitation coil.
　電磁ソレノイドは、一般に、励磁コイルの励磁によりプランジャが突出し、励磁コイルが消磁すると、スプリング等の付勢手段や外部負荷によりプランジャが元の位置まで押し込まれるよになっている。
　プランジャが押し込まれ元の位置に停止するために、所定位置に固定部材（ストッパ）が固定され、押し込まれたプランジャは固定部材に衝突して元の位置に停止する。
　プランジャおよび固定部材は一般的に金属製であり、そのため、プランジャが固定部材に衝突したときに、金属音が発生する。 In the electromagnetic solenoid, generally, the plunger is protruded by the excitation of the exciting coil, and when the exciting coil is demagnetized, the plunger is pushed to the original position by biasing means such as a spring or an external load.
In order for the plunger to be pushed in and stopped at the original position, the fixing member (stopper) is fixed at a predetermined position, and the pushed-in plunger collides with the fixing member and stops at the original position.
The plunger and the fixing member are generally made of metal, so when the plunger collides with the fixing member, a metallic noise is generated.
　そこで、プランジャまたは固定部材の衝突する部分にエラストマーによる緩衝部材を設け、プランジャと固定部材の衝突に緩衝部材を介在させることで、衝突による衝撃を吸収して衝突音を低減する技術が提案されている（例えば、特許文献１参照）。 Therefore, a technique is proposed in which the shock due to the collision is absorbed to reduce the collision noise by providing a shock absorbing member by an elastomer in the colliding portion of the plunger or the fixing member and interposing the shock absorbing member in the collision of the plunger and the fixing member. (See, for example, Patent Document 1).
　特許文献１に開示された電磁ソレノイドは、プランジャと固定部材（ストッパ）の互いに対向する双方の衝突部分にエラストマーの緩衝部材が設けられており、衝突による衝撃を緩衝部材が吸収して衝突音を低減している。また、この電磁ソレノイドにおいて、緩衝部材は押し込まれたプランジャを弾性変形しながら受け止めることで、衝撃を吸収しており、緩衝部材は弾性変形したのち、弾性的に復元することで、プランジャを元の所定位置に戻すことになる。 In the electromagnetic solenoid disclosed in Patent Document 1, an elastomeric buffer member is provided at both opposing collision portions of the plunger and the fixing member (stopper), and the shock absorbing member absorbs the impact due to the collision and the collision sound is generated. It is reduced. Further, in this electromagnetic solenoid, the shock absorbing member absorbs the impact by elastically deforming the plunger which is pushed in, thereby absorbing the impact, and after the elastic deformation of the shock absorbing member is elastically restored, the plunger is returned to the original position. It will be returned to the predetermined position.
特表２００４－５１０３２７号公報Japanese Patent Application Publication No. 2004-510327
　したがって、特許文献１に開示された電磁ソレノイドでは、長年にわたって繰り返しプランジャが緩衝部材に衝突することで、質的な経年変化と相まって緩衝部材にヘタリを生じて僅かでも変形してしまうと、プランジャを所定の位置に正確に停止させることができなくなる。
　プランジャが所定位置に停止できないと、プランジャのストローク量が変化して被作動部材を正確に動作させることができない。 Therefore, in the electromagnetic solenoid disclosed in Patent Document 1, when the plunger repeatedly collides with the shock absorbing member over many years, if the shock absorbing member is distorted by slight deformation due to the secular change of the plunger, the plunger It will not be possible to accurately stop at the predetermined position.
If the plunger can not stop at the predetermined position, the stroke amount of the plunger changes and the actuated member can not be operated accurately.
　そこで、固定部材にプランジャの衝突を受ける受け部材を移動可能に設け、この受け部材をスプリング等の付勢手段によって付勢することによって、プランジャが衝突する際の衝撃を付勢部材によって吸収することが考えられるが、この場合でも、受け部材が固定部材の一部に当たって衝突音が発生するおそれがある。 Therefore, the fixing member is movably provided with a receiving member that receives the collision of the plunger, and the receiving member is biased by a biasing means such as a spring to absorb the impact caused by the collision of the plunger by the biasing member. However, even in this case, the receiving member may hit part of the fixing member and a collision noise may occur.
　本発明は、前記事情に鑑みてなされたもので、プランジャが衝突することに起因して発生する衝突音を低減し、かつプランジャを常に所定位置に精度良く停止させることができる電磁ソレノイドを提供することを目的としている。 The present invention has been made in view of the above circumstances, and provides an electromagnetic solenoid capable of reducing the collision noise generated due to the collision of the plunger and stopping the plunger at a predetermined position with high accuracy. The purpose is that.
　前記目的を達成するために、本発明は、円筒状のコイル部の内側に、固定部が固定状態で設けられるとともに、前記コイル部の軸方向に延在するプランジャが取り付けられた可動ヨークが前記コイル部の軸方向に沿って移動可能に設けられ、前記コイル部の励磁によって前記可動ヨークが前記プランジャとともに前記固定部から離れるように前進し、前記コイル部の消磁によって前記可動ヨークが前記プランジャとともに前記固定部に近づくように後退する電磁ソレノイドにおいて、
　前記固定部は、前記プランジャが前記可動ヨークとともに後退して前記固定部に衝突する際の衝撃を吸収する衝撃吸収手段を有し、
　前記衝撃吸収手段は、前記固定部の内部に設けられた収容部に前記軸方向に移動可能に設けられ、かつ後退する前記プランジャの衝突を受けて当該プランジャともに後退する受け部材と、前記収容部に設けられて前記受け部材を前進する方向に付勢する付勢部材と、前進する前記受け部材を所定の位置で規制する規制部とを備え、
　前記受け部材と、前記収容部に形成されて前記受け部材の後退する方向に対向する対向面との間に緩衝材が設けられていることを特徴とする。 In order to achieve the above object, according to the present invention, a movable yoke provided with a fixed portion in a fixed state inside a cylindrical coil portion and to which a plunger extending in the axial direction of the coil portion is attached is The movable yoke is moved forward along the axial direction of the coil portion, and the excitation of the coil portion advances the movable yoke together with the plunger away from the fixed portion, and the movable yoke is moved together with the plunger by demagnetization of the coil portion. In an electromagnetic solenoid which retracts to approach the fixed portion,
The fixed portion includes impact absorbing means for absorbing an impact when the plunger retracts with the movable yoke and collides with the fixed portion,
The impact absorbing means is provided movably in the axial direction in an accommodating portion provided in the inside of the fixed portion, and a receiving member which recedes with the plunger upon receiving a collision of the plunger, and the accommodating portion. A biasing member for biasing the receiving member in the forward direction, and a restricting portion for restricting the receiving member to be advanced at a predetermined position,
A shock absorbing material is provided between the receiving member and an opposing surface formed in the housing portion and facing in a direction in which the receiving member retracts.
　本発明においては、プランジャが可動ヨークとともに固定部に近づくように後退して、受け部材に衝突すると、当該プランジャが受け部材とともに付勢部材の付勢力に抗して後退することで衝撃が吸収されて衝突音が低減される。
　また、受け部材と、収容部に形成されて受け部材の後退する方向に対向する対向面との間に緩衝材が設けられているので、後退している受け部材は対向面に衝突することなく、緩衝材によって衝突音が低減される。したがって、プランジャが衝突することに起因して発生する衝突音を低減することができる。 In the present invention, when the plunger retracts toward the fixed portion together with the movable yoke and collides with the receiving member, the impact is absorbed by retracting the plunger against the biasing force of the biasing member together with the receiving member. Collision noise is reduced.
Further, since the buffer material is provided between the receiving member and the opposing surface formed in the housing portion and facing in the direction in which the receiving member retracts, the retracted receiving member does not collide with the opposing surface. The shock absorbing material reduces the collision noise. Therefore, the collision sound generated due to the collision of the plunger can be reduced.
　そして、一度後退した受け部材は付勢部材によりプランジャとともに前進するが規制部でその前進が規制されるため、プランジャは所定位置に戻り精度良く位置決めされて停止することができ、よって、常にプランジャのストローク量を一定に維持することができる。 Once the receiving member is retracted, the biasing member advances the plunger together with the plunger, but the restricting portion regulates its advancement, so that the plunger returns to a predetermined position and can be accurately positioned and stopped. The stroke amount can be maintained constant.
　本発明の前記構成において、前記緩衝材は前記受け部材に取り付けられており、この緩衝材と前記収容部の前記受け部材の移動方向に沿う内壁面との間に隙間が設けられていることが望ましい。 In the above configuration of the present invention, the shock absorbing material is attached to the receiving member, and a gap is provided between the shock absorbing material and an inner wall surface along the moving direction of the receiving member of the accommodating portion. desirable.
　このような構成によれば、緩衝材が受け部材に取り付けられているので、この受け部材を固定部の収容部に収容することによって、緩衝材を容易に組み込むことができる。
　また、緩衝材と収容部の受け部材の移動方向に沿う内壁面との間に隙間が設けられているので、緩衝材が受け部材とともに移動しても、この緩衝材が内壁面と干渉することがない。したがって、受け部材の移動がスムーズであるとともに緩衝材が内壁面との摩擦によって損傷することもない。 According to such a configuration, since the shock absorbing material is attached to the receiving member, the shock absorbing material can be easily incorporated by accommodating the receiving member in the receiving portion of the fixed portion.
In addition, since a gap is provided between the shock absorbing material and the inner wall surface along the moving direction of the receiving member of the accommodating portion, even if the shock absorbing material moves with the receiving member, the shock absorbing material interferes with the inner wall surface. There is no Therefore, the movement of the receiving member is smooth and the shock absorbing material is not damaged by the friction with the inner wall surface.
　また、本発明の前記構成において、前記緩衝材は前記対向面に設けられていてもよい。 In the above-mentioned composition of the present invention, the shock absorbing material may be provided in the opposite side.
　このような構成によれば、緩衝材が受け部材に取り付けられていないので、受け部材の移動がスムーズになる。 According to such a configuration, since the shock absorbing material is not attached to the receiving member, the movement of the receiving member becomes smooth.
　また、本発明の前記構成において、前記緩衝材は、前記付勢部材と接触していないのが好ましい。 Further, in the configuration of the present invention, it is preferable that the cushioning material is not in contact with the biasing member.
　このような構成によれば、緩衝材が付勢部材と接触していなので、緩衝材と付勢部材とが干渉しない。したがって、スプリングが緩衝材から受ける影響がなく、受け部材の移動がスムーズとなる。 According to such a configuration, since the shock absorbing material is in contact with the biasing member, the shock absorbing material and the biasing member do not interfere with each other. Therefore, the spring is not affected by the shock absorbing material, and the movement of the receiving member becomes smooth.
　本発明によれば、プランジャが受け部材に衝突すると、当該プランジャが受け部材とともに付勢部材の付勢力に抗して後退することで衝撃が吸収され、さらに、後退している受け部材は対向面に衝突することなく、緩衝材によって衝突音が低減される。
　また、一度後退した受け部材は付勢部材によりプランジャとともに前進するが規制部でその前進が規制されるため、プランジャは所定位置に戻り精度良く位置決めされて停止することができる。
　したがって、プランジャが衝突することに起因して発生する衝突音を低減し、かつプランジャを常に所定位置に精度良く停止させることができる。 According to the present invention, when the plunger collides with the receiving member, the impact is absorbed by the plunger retreating against the biasing force of the biasing member together with the receiving member, and the receding receiving member has the opposite surface. The shock absorbing material reduces the collision noise without causing the collision.
In addition, since the receiving member, which has once retreated, is advanced together with the plunger by the biasing member, the advancing portion is restricted by the restricting portion, so that the plunger can return to a predetermined position and be accurately positioned and stopped.
Therefore, the collision noise generated due to the collision of the plunger can be reduced, and the plunger can be always stopped at the predetermined position with high accuracy.
本発明の実施の形態に係る電磁ソレノイドの第１の実施の形態を示すもので、その断面図である。FIG. 1 is a cross-sectional view of a first embodiment of an electromagnetic solenoid according to an embodiment of the present invention. 同、固定部の拡大断面図である。It is an expanded sectional view of a fixed part equally. 第１の実施の形態に係る電磁ソレノイドの動作を説明するための工程図である。It is a flowchart for explaining the operation of the electromagnetic solenoid according to the first embodiment. 本発明の他の実施の形態に係る電磁ソレノイドを構成する固定部を示すもので、（ａ）は第２の実施の形態における固定部の断面図、（ｂ）は第３の実施の形態における固定部の断面図、（ｃ）は第４の実施の形態における固定部の断面図、（ｄ）は第５の実施の形態における固定部の断面図、（ｅ）は第６の実施の形態における固定部の断面図、（ｆ）は第７の実施の形態における固定部の断面図、（ｇ）は第８の実施の形態における固定部の断面図である。The fixing | fixed part which comprises the electromagnetic solenoid which concerns on the other embodiment of this invention is shown, (a) is sectional drawing of the fixing | fixed part in 2nd Embodiment, (b) is in 3rd Embodiment. Cross-sectional view of the fixed portion, (c) is a cross-sectional view of the fixed portion in the fourth embodiment, (d) is a cross-sectional view of the fixed portion in the fifth embodiment, (e) is the sixth embodiment FIG. 16F is a cross-sectional view of the fixing portion, FIG. 27F is a cross-sectional view of the fixing portion in the seventh embodiment, and FIG.
　以下、本発明の実施の形態について図面を参照して説明する。
（第１の実施の形態）
　図１は、本発明の第１の実施形態に係る電磁ソレノイドを示す断面図、図２は当該電磁ソレノイドの固定部の拡大断面図である。
　この電磁ソレノイドは、例えば、ディーゼル内燃機関の燃料レバーを停止方向に作動させ、機関を自動停止させるために、または４輪のマニュアルトランスミッション車においてリバースセレクトロックを自動的に行なわせるために用いられるものである。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First Embodiment
FIG. 1 is a cross-sectional view showing an electromagnetic solenoid according to a first embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view of a fixing portion of the electromagnetic solenoid.
This electromagnetic solenoid is used, for example, to operate a fuel lever of a diesel internal combustion engine in a stopping direction to automatically shut down the engine, or to automatically perform reverse select locking in a four-wheeled manual transmission vehicle. It is.
　この電磁ソレノイドは、ヨークを兼ねるプランジャガイド部１１および固定部１２と、可動ヨーク１５と、コイル部１６とを備えている。
　プランジャガイド部１１と固定部１２とは軸線Ｏ方向に対向して配置されており、この固定部１２の外周外側に、筒状部１５ａを有する可動ヨーク１５がその軸方向に沿って移動可能に設けられている。また、筒状部１５ａの外周外側とプランジャガイド部１１の外周外側に、円筒状のコイル部１６が設けられている。言い換えると、円筒状のコイル部１６の内側に、固定部１２とプランジャガイド部１１とが固定状態で設けられるともに、可動ヨーク１５がコイル部１６の軸方向に沿って移動可能に設けられている。 The electromagnetic solenoid includes a plunger guide portion 11 and a fixed portion 12 which also serve as a yoke, a movable yoke 15 and a coil portion 16.
The plunger guide portion 11 and the fixed portion 12 are disposed to face each other in the direction of the axis O, and the movable yoke 15 having the cylindrical portion 15a is movable along the axial direction on the outer periphery of the fixed portion 12 It is provided. In addition, a cylindrical coil portion 16 is provided on the outer peripheral side of the cylindrical portion 15 a and on the outer peripheral side of the plunger guide portion 11. In other words, the fixed portion 12 and the plunger guide portion 11 are provided in a fixed state inside the cylindrical coil portion 16, and the movable yoke 15 is provided movably along the axial direction of the coil portion 16. .
　コイル部１６は可動ヨーク１５を軸線Ｏに沿って移動させるものであり、ボビン１６ａと、このボビン１６ａに巻き付けられたコイル１６ｂとを備えている。
　これらの各部材（プランジャガイド部１１、固定部１２、可動ヨーク１５、コイル部１６）は基本的に回転対称に、すなわち断面が円形状に形成され、円筒形のハウジング３０の中に収容されている。 The coil portion 16 moves the movable yoke 15 along the axis O, and includes a bobbin 16a and a coil 16b wound around the bobbin 16a.
Each of these members (the plunger guide portion 11, the fixed portion 12, the movable yoke 15, and the coil portion 16) is basically formed in rotational symmetry, that is, the cross section is formed in a circular shape and accommodated in the cylindrical housing 30 There is.
　前記可動ヨーク１５は、コイル１６ｂへの通電によるコイル部１６の励磁（ОＮ状態）によって固定部１２から離れるように前進し、コイル部１６の消磁（ОＦＦ状態）によって固定部１２に近づくように後退するようになっている。
　なお、図１においては、軸線Оより左側は可動ヨーク１５がプランジャガイド部１１側に移動した状態（ＯＮ状態）、軸線Оより右側は可動ヨーク１５が固定部１２側に位置している状態（ＯＦＦ状態）を示している。 The movable yoke 15 advances so as to leave the fixed part 12 by excitation (ON state) of the coil part 16 by energization to the coil 16b, and retracts so as to approach the fixed part 12 by demagnetization (OFF state) of the coil part 16. It is supposed to
In FIG. 1, the movable yoke 15 is moved to the plunger guide 11 side on the left side of the axis line O (ON state), and the movable yoke 15 is positioned on the fixed part 12 side on the right side of the axis line O OFF state is shown.
　可動ヨーク１５は、軸線Ｏ方向に沿って延びる筒状部１５ａと、この筒状部１５ａの下端に形成された底部１５ｂとによってカップ状（有底円筒状）に形成されており、底部１５ｂの中央部には、上方に突出する凸部１５ｃが形成されている。この凸部１５ｃに前記底部１５ｂの下面まで貫通する貫通孔が形成されている。この貫通孔に前記プランジャ２０の先端部が挿入されて固定されている。また、プランジャ２０の先端部は凸部１５ｃより上方に突出している。このように、プランジャ２０は可動ヨーク１５に固定されているので、当該可動ヨーク１５とともに軸線Ｏに沿って移動するようになっている。
　また、プランジャガイド部１１には軸線Ｏに沿って貫通孔１１ａが形成され、この貫通孔１１ａに２つの軸受１７，１７を介してプランジャ２０が移動自在に挿通され、このプランジャ２０の先端は可動ヨーク１５に固定されている。なお、プランジャガイド部１１の外周部にはリング状の鍔状部２１が設けられており、この鍔状部２１の外周部にハウジング３０の下端部が係合している。 The movable yoke 15 is formed in a cup shape (a cylindrical shape with a bottom) by a cylindrical portion 15a extending along the direction of the axis O and a bottom portion 15b formed at the lower end of the cylindrical portion 15a. At the central portion, a convex portion 15c protruding upward is formed. A through hole penetrating to the lower surface of the bottom portion 15b is formed in the convex portion 15c. The tip of the plunger 20 is inserted into and fixed to the through hole. Further, the tip end portion of the plunger 20 protrudes upward from the convex portion 15 c. As described above, since the plunger 20 is fixed to the movable yoke 15, the plunger 20 moves along the axis O together with the movable yoke 15.
Further, a through hole 11a is formed in the plunger guide portion 11 along the axis O, and the plunger 20 is movably inserted into the through hole 11a via the two bearings 17 and 17. The tip of the plunger 20 is movable It is fixed to the yoke 15. A ring-shaped bowl-shaped portion 21 is provided on the outer peripheral portion of the plunger guide portion 11, and the lower end portion of the housing 30 is engaged with the outer peripheral portion of the bowl-shaped portion 21.
　前記固定部１２は、図２に示すように、その上端部に前記鍔状部２２を一体的に形成して構成されており、当該固定部１２の内部に衝撃吸収手段３１を有している。
　この衝撃吸収手段３１は、前記プランジャ２０が可動ヨーク１５とともに後退して固定部１２に衝突する際の衝撃を吸収するものであり、以下のように構成されている。
　すなわちまず、固定部１２の内部には収容部３２が形成されている。この収容部３２は略円筒状に形成されており、その下端は開口され、上端は閉塞されている。
　収容部３２は円筒状の第１収容部３２ａと、この第１収容部３２ａの上端に当該第１収容部３２ａと同軸に形成された第２収容部３２ｂとを備えており、第２収容部３２ｂは第１収容部３２ａより小径となっている。また、第１収容部３２ａの下端側には円筒状の大径部３３が第１収容部３２ａと同軸に形成されている。この大径部３３には、可動ヨーク１５が後退してきた際に当該可動ヨーク１５の凸部１５ｃが収容されるようになっている。 As shown in FIG. 2, the fixing portion 12 is formed by integrally forming the collar-like portion 22 at the upper end portion thereof, and the shock absorbing means 31 is provided inside the fixing portion 12. .
The impact absorbing means 31 absorbs an impact when the plunger 20 retracts with the movable yoke 15 and collides with the fixed portion 12 and is configured as follows.
That is, first, the housing portion 32 is formed inside the fixed portion 12. The housing portion 32 is formed in a substantially cylindrical shape, and the lower end is opened and the upper end is closed.
The housing portion 32 includes a cylindrical first housing portion 32a, and a second housing portion 32b coaxially formed with the first housing portion 32a at the upper end of the first housing portion 32a. The diameter 32 b is smaller than that of the first accommodation portion 32 a. Further, a cylindrical large diameter portion 33 is formed coaxially with the first accommodation portion 32a on the lower end side of the first accommodation portion 32a. The convex portion 15 c of the movable yoke 15 is accommodated in the large diameter portion 33 when the movable yoke 15 is retracted.
　また、第１収容部３２ａには受け部材３５が軸線（Ｏ）方向に移動可能に設けられている。この受け部材３５は、可動ヨーク１５とともに後退するプランジャ２０の衝突を受けて当該プランジャ２０とともに後退するものであり、略円柱状に形成されている。
　受け部材３５は第１収容部３２ａの内壁面に軸線方向に摺動可能な本体部３５ａと、この本体部３５ａの上端面に当該本体部３５ａより小径に形成された小径部３５ｂと、この小径部３５ｂの上端面に当該小径部３５ｂより小径に形成された軸部３５ｃと、本体部３５ａの下端面に当該本体部３５ａより小径に形成されて前記プランジャ２０の衝突を受ける受け部３５ｄとを備えている。 In addition, a receiving member 35 is provided movably in the direction of the axis (O) in the first accommodating portion 32a. The receiving member 35 receives the collision of the plunger 20 which is retracted with the movable yoke 15, and retracts with the plunger 20, and is formed in a substantially cylindrical shape.
The receiving member 35 has a main body portion 35a axially slidable on the inner wall surface of the first housing portion 32a, a small diameter portion 35b formed on the upper end surface of the main body portion 35a with a smaller diameter than the main body portion 35a, and the small diameter portion A shaft 35c formed on the upper end face of the part 35b at a smaller diameter than the small diameter part 35b, and a receiving part 35d formed on the lower end face of the main body 35a at a smaller diameter than the main body 35a and receiving the collision of the plunger 20 Have.
　前記軸部３５ｃは第２収容部３２ｂに収容されており、この第２収容部３２ｂに受け部材３５を前進する方向（図１において下方）に付勢する付勢部材としてのスプリング３６が前記軸部３５ｃの外周側を囲むようにして収容されている。スプリング３６は圧縮された状態で収容されており、その上端部は第２収容部３２ｂの上面に当接され、下端部は前記小径部３５ｂの上面外周部に当接されている。 The shaft portion 35c is accommodated in the second accommodation portion 32b, and a spring 36 as an urging member for urging the receiving member 35 in the forward direction (downward in FIG. 1) to the second accommodation portion 32b is the shaft. It accommodates so that the outer peripheral side of the part 35c may be enclosed. The spring 36 is accommodated in a compressed state, the upper end of which is in contact with the upper surface of the second accommodation portion 32b, and the lower end of which is in contact with the upper peripheral portion of the small diameter portion 35b.
　また、第１収容部３２ａの下端部には、規制部３７が設けられている。この規制部３７は前進する受け部材３５を所定の位置で規制して、それ以上の前進を規制するものである。規制部３７はリング状のプレートで形成されており、第１収容部３２ａの下端部内壁面に形成された環状の凹部に嵌め込まれて固定されている。規制部３７の内側には受け部材３５の受け部３５ｄが挿通され、当該受け部３５の先端（図１において下端）は、規制部３７より下方に突出している。これによって、受け部３５ｄには前記プランジャ２０が衝突可能となっている。 Further, at the lower end portion of the first accommodation portion 32a, a regulation portion 37 is provided. The restricting portion 37 restricts the advancing receiving member 35 at a predetermined position to restrict further advancing. The restricting portion 37 is formed of a ring-shaped plate, and is fixed by being fitted into an annular recess formed in the inner wall surface of the lower end portion of the first accommodating portion 32a. The receiving portion 35d of the receiving member 35 is inserted into the inside of the restricting portion 37, and the tip (the lower end in FIG. 1) of the receiving portion 35 protrudes downward from the restricting portion 37. Thus, the plunger 20 can collide with the receiving portion 35d.
　また、前記収容部３２の第１収容部３２ａの上面は、受け部材３５の後退する方向（図１において上方）に対向する対向面３８となっている。そして、受け部材３５と対向面３８との間に緩衝材４０が設けられている。
　この緩衝材４０は、受け部材３５の本体部３５ａが対向面３８に衝突する際の衝撃を吸収するものであり、例えばリング状のゴムで形成されている。このリング状の緩衝材４０は、受け部材３５の小径部３５ｂの外周面に装着されるとともに、本体部３５ａの上面に当接して設けられている。また、緩衝材４０と第１収容部の内壁面（受け部材の移動方向に沿う内壁面）との間には所定の隙間Ｓが設けられている。 Further, the upper surface of the first accommodating portion 32a of the accommodating portion 32 is an opposing surface 38 which faces in the direction in which the receiving member 35 retreats (upward in FIG. 1). And the shock absorbing material 40 is provided between the receiving member 35 and the opposing surface 38.
The shock absorbing material 40 absorbs an impact when the main body 35 a of the receiving member 35 collides with the opposing surface 38, and is made of, for example, a ring-shaped rubber. The ring-shaped cushioning material 40 is mounted on the outer peripheral surface of the small diameter portion 35 b of the receiving member 35 and is provided in contact with the upper surface of the main body portion 35 a. Further, a predetermined gap S is provided between the shock absorbing material 40 and the inner wall surface of the first housing portion (the inner wall surface along the moving direction of the receiving member).
　また、緩衝材４０の上下方向の長さは、受け部材３５が前進して規制部３７に当接している状態において、緩衝材４０と対向面３８との間の隙間が受け部材３５の軸部３５ｃと第２収容部３２ｂの上面３８ａとの間の隙間より小さくなるように、設定されている。したがって、受け部材３５が後退（図２において上方に移動）した場合、緩衝材４０が対向面３８に衝突してそれ以上の受け部材３５の後退を阻止するので、軸部３５ｃは第２収容部３２ｂの上面に衝突しない。
　また、緩衝材４０は、受け部材３５の小径部３５ｂの外周面に装着される一方、スプリング３６の下端は小径部３５ｂの上端面に当接されている。したがって、緩衝材４０とスプリング３６とは接触していない。 Further, the vertical length of the shock absorbing material 40 is determined such that the gap between the shock absorbing material 40 and the opposing surface 38 is the shaft portion of the receiving member 35 in a state where the receiving member 35 advances and contacts the regulating portion 37. It is set to be smaller than the gap between 35 c and the upper surface 38 a of the second accommodation portion 32 b. Therefore, when the receiving member 35 retracts (moves upward in FIG. 2), the shock absorbing material 40 collides with the opposing surface 38 to prevent further retraction of the receiving member 35, so the shaft portion 35c is the second accommodating portion Do not collide with the top of 32b.
The shock absorbing material 40 is mounted on the outer peripheral surface of the small diameter portion 35b of the receiving member 35, while the lower end of the spring 36 is in contact with the upper end surface of the small diameter portion 35b. Therefore, the cushioning material 40 and the spring 36 are not in contact with each other.
　次に、本実施の形態における電磁ソレノイドの動作について図３を参照して説明する。
　図３（ａ）は、コイル部１６（図１参照）が励磁されることにより、可動ヨーク１５が固定部１２から離れるように前進している状態を示している。この状態において、可動ヨーク１５に固定されているプランジャ２０は可動ヨーク１５とともに前進して、固定部１２から離間している。また、衝撃吸収手段３１の受け部材３５はスプリング３６によって、前進する方向（図３において下方）に付勢され、規制部３７に当接してそれ以上の前進が規制された状態となっている。 Next, the operation of the electromagnetic solenoid according to the present embodiment will be described with reference to FIG.
FIG. 3A shows a state in which the movable yoke 15 is advanced to be separated from the fixed portion 12 by exciting the coil portion 16 (see FIG. 1). In this state, the plunger 20 fixed to the movable yoke 15 advances with the movable yoke 15 and is separated from the fixed portion 12. Further, the receiving member 35 of the shock absorbing means 31 is urged in the forward direction (downward in FIG. 3) by the spring 36 and abuts on the restricting portion 37 so that the further forward movement is restricted.
　次に、コイル部６が消磁されると、図３（ｂ）に示すように、プランジャ２０が外部負荷（図示略）によって押されて可動ヨーク１５とともに固定部１２に近づくように後退していき、プランジャ２０が受け部材３５の受け部３５ｄに衝突する。すると、当該プランジャ２０が受け部材３５とともにスプリング３６の付勢力に抗して後退することで衝撃が吸収されて衝突音が低減される。 Next, when the coil portion 6 is demagnetized, as shown in FIG. 3B, the plunger 20 is pushed by an external load (not shown) and retreats toward the fixed portion 12 together with the movable yoke 15 The plunger 20 collides with the receiving portion 35 d of the receiving member 35. Then, the plunger 20 is retracted together with the receiving member 35 against the biasing force of the spring 36, whereby the impact is absorbed and the collision noise is reduced.
　さらに、図３（ｃ）に示すように、受け部材３５がプランジャ２０によって押されて後退して行くが、受け部材３５の本体部３５ａの上面に緩衝材４０が設けられているので、この緩衝材４０が前記対向面３８に衝突する。したがって、後退している受け部材３５は対向面３８に衝突することなく、緩衝材４０によって衝突音が低減される。 Furthermore, as shown in FIG. 3C, the receiving member 35 is pushed back by the plunger 20, but since the shock absorbing material 40 is provided on the upper surface of the main body portion 35a of the receiving member 35, this buffer The material 40 collides with the facing surface 38. Therefore, the shock absorbing material 40 reduces the collision noise without the receding receiving member 35 colliding with the opposing surface 38.
　その後、図３（ｄ）に示すように、一度後退した受け部材３５はスプリング３６の付勢力によって前進する方向に押され、プランジャ２０とともに前進するが、規制部３７に受け部材３５の本体部３５ａの下面が当たって、当該規制部３７でその前進が規制されるため、プランジャ２０は所定位置に戻って停止する。 Thereafter, as shown in FIG. 3D, the receiving member 35 once retracted is pushed in the forward direction by the biasing force of the spring 36 and advances with the plunger 20, but the main body 35a of the receiving member 35 As the lower surface of the plunger hits and the forward movement thereof is restricted by the restricting portion 37, the plunger 20 returns to the predetermined position and stops.
　このように、本実施の形態によれば、コイル部１６が消磁されると、プランジャ２０が外部負荷に押されて、可動ヨーク１５とともに固定部１２に近づくように後退して、受け部材３５の受け部３５ｄに衝突すると、当該プランジャ２０が受け部材３５とともにスプリング３６の付勢力に抗して後退することで衝撃が吸収されて衝突音が低減される。
　さらに、受け部材３５に緩衝材４０が取り付けられているので、つまり、受け部材３５と対向面３８との間に緩衝材４０が設けられているので、後退している受け部材３５は対向面３８に衝突することなく、緩衝材４０によって衝突音が低減される。したがって、プランジャ２０が衝突することに起因して発生する衝突音を低減することができる。 As described above, according to the present embodiment, when the coil portion 16 is demagnetized, the plunger 20 is pushed by the external load, and is retracted so as to approach the fixed portion 12 together with the movable yoke 15. When colliding with the receiving portion 35d, the plunger 20 is retracted together with the receiving member 35 against the biasing force of the spring 36, whereby the impact is absorbed and the collision noise is reduced.
Furthermore, since the shock absorbing material 40 is attached to the receiving member 35, that is, the shock absorbing material 40 is provided between the receiving member 35 and the facing surface 38, the receding receiving member 35 has the facing surface 38. The shock absorbing material 40 reduces the collision noise without causing a collision. Therefore, the collision noise generated due to the collision of the plunger 20 can be reduced.
　なお、衝突音について実験を行ったところ、受け部材３５とスプリング３６を有する衝撃吸収手段３１および緩衝材４０の双方がない電磁ソレノイドの衝突音は７４ｄＢ程度、衝撃吸収手段３１のみを備えた電磁ソレノイドの衝突音は６６ｄＢ程度、衝撃吸収手段３１および緩衝材４０の双方を備えた電磁ソレノイドの衝突音は５０ｄＢ程度あり、衝突音が大幅に低減できていることが確認できた。 When the experiment was conducted on the collision noise, the collision noise of the electromagnetic solenoid without both of the shock absorbing means 31 having the receiving member 35 and the spring 36 and the shock absorbing material 40 is about 74 dB, and the electromagnetic solenoid comprising only the shock absorbing means 31. The impact noise of the electromagnetic solenoid having both the impact absorbing means 31 and the shock absorbing material 40 was about 50 dB, and it was confirmed that the impact noise was significantly reduced.
　また、一度後退した受け部材３５はスプリング３６の付勢力によってプランジャ２０とともに前進するが規制部３７でその前進が規制されるため、プランジャ２０は所定位置に戻り精度良く位置決めされて停止することができ、よって、常にプランジャ２０のストローク量を一定に維持することができる。
　加えて、緩衝材４０は受け部材３５の小径部３５ｂに装着されており、この緩衝材４０と第１収容部３２ａの内壁面との間に隙間が設けられているので、緩衝材４０が受け部材３５とともに移動しても、この緩衝材４０が前記内壁面と干渉することがない。したがって、受け部材３５の移動がスムーズであるとともに緩衝材４０が内壁面との摩擦によって損傷することがない。 Further, the receiving member 35 which has once retreated is advanced together with the plunger 20 by the biasing force of the spring 36, but its advancement is restricted by the restricting part 37, so that the plunger 20 returns to a predetermined position and can be accurately positioned and stopped. Therefore, the stroke amount of the plunger 20 can be always maintained constant.
In addition, the shock absorbing material 40 is attached to the small diameter portion 35b of the receiving member 35, and a gap is provided between the shock absorbing material 40 and the inner wall surface of the first accommodation portion 32a. Even if it moves with the member 35, the shock absorbing material 40 does not interfere with the inner wall surface. Therefore, the movement of the receiving member 35 is smooth and the shock absorbing material 40 is not damaged by the friction with the inner wall surface.
　また、緩衝材４０が受け部材３５に取り付けられているので、この受け部材３５を固定部１２の収容部３２に収容することによって、緩衝材４０を容易に組み込むことができる。
　さらに、緩衝材４０は、受け部材３５の小径部３５ｂの外周面に装着され、スプリング３６の下端は小径部３５ｂの上端面に当接されており、緩衝材４０とスプリング３６とは接触していないので、緩衝材４０とスプリング３６とが干渉しない。したがって、スプリング３６が緩衝材４０から受ける影響がなく、受け部材３５の移動がスムーズとなる。 Moreover, since the shock absorbing material 40 is attached to the receiving member 35, by accommodating the receiving member 35 in the housing portion 32 of the fixed portion 12, the shock absorbing material 40 can be easily incorporated.
Furthermore, the shock absorbing material 40 is mounted on the outer peripheral surface of the small diameter portion 35b of the receiving member 35, the lower end of the spring 36 is in contact with the upper end surface of the small diameter portion 35b, and the shock absorbing material 40 and the spring 36 are in contact. Because the shock absorber 40 and the spring 36 do not interfere with each other. Therefore, the spring 36 is not affected by the shock absorbing material 40, and the movement of the receiving member 35 becomes smooth.
　図４（ａ）～図４（ｇ）はそれぞれ本発明の他の実施の形態を示す断面図である。
　これらの図に示す他の実施の形態における電磁ソレノイドが、前記第１の実施の形態における電磁ソレノイドと異なる点は、固定部１２の内部に設けられている受け部材、スプリング（付勢部材）、緩衝材等の形状や配置位置であり、他の構成部分は第１の実施の形態と同様であるので、同一構成部分には同一符号を付してその説明を省略する。また、他の実施の形態では、固定部１２以外の部分は第１の実施の形態と同様であるので、図４（ａ）～図４（ｇ）では固定部１２のみを図示している。 4 (a) to 4 (g) are cross-sectional views showing other embodiments of the present invention.
The electromagnetic solenoid in the other embodiment shown in these figures differs from the electromagnetic solenoid in the first embodiment in the receiving member provided inside the fixed portion 12, the spring (biasing member), The configuration and the arrangement position of the buffer material and the like, and the other components are the same as those of the first embodiment, and therefore the same components are denoted by the same reference numerals and the description thereof will be omitted. Further, in the other embodiment, the parts other than the fixing part 12 are the same as those of the first embodiment, so only the fixing part 12 is shown in FIGS. 4 (a) to 4 (g).
　図４（ａ）に示す第２の実施の形態では、緩衝材４１が固定部１２の第２収容部３２ｂの上面３８ａに設けられている。この上面３８ａは受け部材３５の後退する方向に対向する対向面３８ａの１つである。また、第１の実施の形態と同様、収容部３２には対向面３８が形成されている。 In the second embodiment shown in FIG. 4A, the shock absorbing material 41 is provided on the upper surface 38 a of the second accommodation portion 32 b of the fixed portion 12. The upper surface 38 a is one of the facing surfaces 38 a facing in the backward direction of the receiving member 35. Further, as in the first embodiment, the housing portion 32 is provided with the facing surface 38.
　緩衝材４１は、略円柱状に形成されており、大径部４１ａと小径部４１ｂとを備え、大径部４１ａと小径部４１ｂとの間に首部が形成されている。このような緩衝材４１は、小径部４１ｂを受け部材３５の軸部３５ｃに対向して設けられている。小径部４１ｂの直径は受け部材３５の軸部３５ｃより大きくなっている。また、スプリング３６の上端は緩衝材４１の首部に係止されている。また、緩衝材４１の上下方向の長さは、受け部材３５が前進して規制部３７に当接している状態において、緩衝材４１と受け部材３５の軸部３５ｃとの間の隙間が受け部材３５の本体部３５ａと対向面３８との間の隙間より小さくなるように、設定されている。 The buffer material 41 is formed in a substantially cylindrical shape, includes a large diameter portion 41a and a small diameter portion 41b, and a neck portion is formed between the large diameter portion 41a and the small diameter portion 41b. Such a shock absorbing material 41 is provided to face the shaft portion 35 c of the receiving member 35 with the small diameter portion 41 b. The diameter of the small diameter portion 41 b is larger than that of the shaft portion 35 c of the receiving member 35. Further, the upper end of the spring 36 is locked to the neck portion of the shock absorbing material 41. Further, the length of the cushioning material 41 in the vertical direction is determined by the gap between the cushioning material 41 and the shaft portion 35c of the reception member 35 in a state where the reception member 35 advances and abuts on the regulation portion 37. It is set so as to be smaller than the gap between the main body 35 a of 35 and the facing surface 38.
　このような構成によれば、後退している受け部材３５は本体部３５ａが対向面３８に衝突することなく、軸部３５ｃが緩衝材４１に衝突して、この緩衝材４１によって衝突音が低減される。また、緩衝材４１が対向面３８ａに設けられており、受け部材３５に取り付けられていないので、受け部材３５の移動がスムーズになる。 According to such a configuration, the shaft portion 35 c collides with the shock absorbing material 41 without the main body 35 a colliding with the opposing surface 38 in the receding receiving member 35, and the shock absorbing material 41 reduces the collision noise. Be done. In addition, since the shock absorbing material 41 is provided on the facing surface 38 a and is not attached to the receiving member 35, the movement of the receiving member 35 is smooth.
　図４（ｂ）に示す第３の実施の形態では、第２の実施の形態と同様、緩衝材４２が固定部１２の第２収容部３２ｂの上面に設けられているが、この上面に凸部３２ｃが形成され、この凸部３２ｃに緩衝材４２が嵌め込まれている。緩衝材４２は円柱状に形成されており、その上端面に凹部が形成され、この凹部が前記凸部３２ｃに嵌合している。
　また、緩衝材４２の上下方向の長さは、受け部材３５が前進して規制部３７に当接している状態において、緩衝材４２と受け部材３５の軸部３５ｃとの間の隙間が受け部材３５の本体部３５ａと対向面３８との間の隙間より小さくなるように、設定されている。 In the third embodiment shown in FIG. 4 (b), the cushioning material 42 is provided on the upper surface of the second accommodation portion 32b of the fixed portion 12 as in the second embodiment. The portion 32 c is formed, and the shock absorbing material 42 is fitted into the convex portion 32 c. The cushioning material 42 is formed in a cylindrical shape, and a concave portion is formed on the upper end surface thereof, and the concave portion is fitted to the convex portion 32 c.
Further, the length of the cushioning material 42 in the vertical direction is determined by the gap between the cushioning material 42 and the shaft portion 35c of the reception member 35 in a state where the reception member 35 advances and abuts on the regulation portion 37. It is set so as to be smaller than the gap between the main body 35 a of 35 and the facing surface 38.
　このような構成によれば、第２の実施の形態と同様に、後退している受け部材３５は本体部３５ａが対向面３８に衝突することなく、軸部３５ｃが緩衝材４２に衝突して、この緩衝材４２によって衝突音が低減される。
　また、緩衝材４２が凸部３２ｃに嵌め込まれているので、緩衝材４２を容易に位置決めして取り付けることができる。 According to such a configuration, as in the second embodiment, the shaft member 35 c collides with the shock absorbing material 42 without the main body 35 a colliding with the opposing surface 38 in the retracted receiving member 35. The shock absorbing material 42 reduces the collision noise.
Moreover, since the shock absorbing material 42 is fitted into the convex portion 32 c, the shock absorbing material 42 can be easily positioned and attached.
　図４（ｃ）に示す第４の実施の形態では、第２の実施の形態と同様に、緩衝材４３が固定部１２の第２収容部３２ｂの上面３８ａに設けられている。緩衝材４３は前記緩衝材４１より薄い円板状に形成されている。また、スプリング３６の上端は緩衝材４３の表面に当接されている。また、緩衝材４３の厚さは、受け部材３５が前進して規制部３７に当接している状態において、緩衝材４３と受け部材３５の軸部３５ｃとの間の隙間が受け部材３５の本体部３５ａと対向面３８との間の隙間より小さくなるように、設定されている。
　このような構成によれば、前記第２の実施の形態と同様の効果が得られる。 In the fourth embodiment shown in FIG. 4C, the cushioning material 43 is provided on the upper surface 38a of the second accommodation portion 32b of the fixed portion 12 as in the second embodiment. The cushioning material 43 is formed in a disk shape thinner than the cushioning material 41. Further, the upper end of the spring 36 is in contact with the surface of the shock absorbing material 43. Further, the thickness of the shock absorbing material 43 is such that the gap between the shock absorbing material 43 and the shaft portion 35 c of the receiving member 35 is the main body of the receiving member 35 in a state where the receiving member 35 advances and contacts the regulating portion 37. It is set to be smaller than the gap between the portion 35 a and the facing surface 38.
According to such a configuration, the same effect as that of the second embodiment can be obtained.
　図４（ｄ）に示す第５の実施の形態では、緩衝材４４が受け部材３５の軸部３５ｃに取り付けられている。緩衝材４４は円柱状に形成されており、その下端面に凹部が形成され、この凹部が軸部３５ｃに嵌合している。
　第２収容部３２ｂの上面（対向面）３８ａは受け部材３５の後退する方向に対向する対向面の１つである。
　また、緩衝材４４の上下方向の長さは、受け部材３５が前進して規制部３７に当接している状態において、緩衝材４４と対向面３８ａとの間の隙間が受け部材３５の本体部３５ａと対向面３８との間の隙間より小さくなるように、設定されている。 In the fifth embodiment shown in FIG. 4 (d), the shock absorbing material 44 is attached to the shaft 35 c of the receiving member 35. The cushioning material 44 is formed in a cylindrical shape, and a concave portion is formed on the lower end surface thereof, and the concave portion is fitted to the shaft portion 35c.
The upper surface (facing surface) 38 a of the second accommodation portion 32 b is one of the facing surfaces facing in the backward direction of the receiving member 35.
Further, the length of the cushioning material 44 in the vertical direction is determined by the gap between the cushioning material 44 and the opposing surface 38 a in the main body portion of the cushioning member 35 in a state where the cushioning member 35 advances and contacts the regulating portion 37. It is set to be smaller than the gap between 35 a and the facing surface 38.
　このような構成によれば、後退している受け部材３５は本体部３５ａが対向面３８に衝突することなく、軸部３５ｃに取り付けられている緩衝材４４が対向面３８ａに衝突して、この緩衝材４４によって衝突音が低減される。 According to such a configuration, the buffer member 44 attached to the shaft portion 35c collides with the opposing surface 38a without the main body portion 35a colliding with the opposing surface 38, and the receding receiving member 35 collides with the opposing surface 38a. The shock absorbing material 44 reduces the collision noise.
　図４（ｅ）に示す第６の実施の形態では、前記第５の実施の形態と同様、緩衝材４５が受け部材３５の軸部３５ｃに取り付けられているが、この取り付け方が第５の実施の形態と異なる。
　すなわち、緩衝材４５はその下面に取付軸４５ａを有している。一方、軸部３５ｃには取付孔が形成されており、この取付孔に取付軸４５ａが挿入されている。これによって、緩衝材４５が受け部材３５の軸部３５ｃに取り付けられている。
　このような構成によれば、第５の実施の形態と同様に効果が得られる。 In the sixth embodiment shown in FIG. 4 (e), the cushioning material 45 is attached to the shaft portion 35c of the receiving member 35 as in the fifth embodiment. It differs from the embodiment.
That is, the shock absorbing material 45 has a mounting shaft 45a on its lower surface. On the other hand, a mounting hole is formed in the shaft portion 35c, and the mounting shaft 45a is inserted into the mounting hole. Thereby, the shock absorbing material 45 is attached to the shaft 35 c of the receiving member 35.
According to such a configuration, the effect can be obtained as in the fifth embodiment.
　図４（ｆ）に示す第７の実施の形態では、緩衝材４６がリング状に形成されている。一方、受け部材３５の軸部３５ｃは。第１～第６の実施の形態の軸部３５ｃに比べて短く形成されており、この軸部３５ｃの外周面に緩衝材４６が装着されている。また、緩衝材４６と第２収容部３２ｂの内壁面との間には所定の隙間が設けられている。
　緩衝材４６の上下方向の長さは、受け部材３５が前進して規制部３７に当接している状態において、緩衝材４６と対向面３８ａとの間の隙間が受け部材３５の本体部３５ａと対向面３８との間の隙間より小さくなるように、設定されている。
　また、軸部３５ｃには凹部が形成されており、この凹部に付勢部材としてのスプリング３６ａが挿入され、このスプリング３６ａの上端部が対向面３８ａに当接されている。 In the seventh embodiment shown in FIG. 4 (f), the cushioning material 46 is formed in a ring shape. On the other hand, the shaft portion 35c of the receiving member 35 is. It is formed to be shorter than the shaft portion 35c in the first to sixth embodiments, and a shock absorbing material 46 is attached to the outer peripheral surface of the shaft portion 35c. In addition, a predetermined gap is provided between the cushioning material 46 and the inner wall surface of the second accommodation portion 32b.
The vertical length of the shock absorbing material 46 is determined by the gap between the shock absorbing material 46 and the opposing surface 38 a and the main body 35 a of the receiving member 35 in a state where the receiving member 35 advances and abuts against the restricting portion 37. It is set to be smaller than the gap between the opposing surface 38.
Further, a recess is formed in the shaft portion 35c, and a spring 36a as a biasing member is inserted into the recess, and an upper end portion of the spring 36a is in contact with the opposing surface 38a.
　このような構成によれば、後退している受け部材３５は本体部３５ａが対向面３８に衝突することなく、軸部３５ｃに取り付けられている緩衝材４６が対向面３８ａに衝突して、この緩衝材４６によって衝突音が低減される。 According to such a configuration, the buffer member 46 attached to the shaft 35c collides with the opposing surface 38a without the main body 35a colliding with the opposing surface 38, and the receding receiving member 35 collides with the opposing surface 38a. The shock absorbing material 46 reduces the collision noise.
　図４（ｇ）に示す第８の実施の形態では、第１の実施の形態と同様に、緩衝材４７が受け部材３５の小径部３５ｂの外周部に装着されているが、この装着の仕方が第１の実施の形態と異なる。
　本実施の形態では、小径部３５ｂの外周部に環状の外フランジ４８ａが形成されている。また、緩衝材４７はその下部に内側に環状に突出する内フランジ４８ｂが形成されている。そして、この内フランジ４８ｂを外フランジ４８ａの下側に嵌め込むことによって、緩衝材４７が受け部材３５の小径部３５ｂの外周部に装着されている。
　また、　緩衝材４７の上下方向の長さは、受け部材３５が前進して規制部３７に当接している状態において、緩衝材４７と対向面３８との間の隙間が受け部材３５の軸部３５ｃと第２収容部３２ｂの上面３８ａとの間の隙間より小さくなるように、設定されている。 In the eighth embodiment shown in FIG. 4 (g), the cushioning material 47 is mounted on the outer peripheral portion of the small diameter portion 35b of the receiving member 35 as in the first embodiment. Are different from the first embodiment.
In the present embodiment, an annular outer flange 48a is formed on the outer peripheral portion of the small diameter portion 35b. Further, the cushioning material 47 is formed at its lower portion with an inner flange 48 b which protrudes in an annular manner inward. The shock absorbing material 47 is mounted on the outer peripheral portion of the small diameter portion 35 b of the receiving member 35 by fitting the inner flange 48 b below the outer flange 48 a.
Further, the length of the cushioning material 47 in the vertical direction is such that the gap between the cushioning material 47 and the opposing surface 38 is the shaft portion of the reception member 35 in a state where the reception member 35 advances and contacts the restriction portion 37 It is set to be smaller than the gap between 35 c and the upper surface 38 a of the second accommodation portion 32 b.
　このような構成によれば、第１の実施の形態と同様の効果を得られる他、緩衝材４７を受け部材３５に強固に取り付けることができる。 According to such a configuration, the same effect as that of the first embodiment can be obtained, and moreover, the shock absorbing material 47 can be firmly attached to the receiving member 35.
１２　　固定部
１５　　可動ヨーク
１６　　コイル部
２０　　プランジャ
３１　　衝撃吸収手段
３２　　収容部
３５　　受け部材
３６　　スプリング（付勢部材）
３７　　規制部
３８，３８ａ　　対向面
４０～４６　　緩衝材 12 fixed portion 15 movable yoke 16 coil portion 20 plunger 31 impact absorbing means 32 accommodation portion 35 receiving member 36 spring (biasing member)
37 Regulating portion 38, 38a Opposing surface 40 to 46 Buffer material

Claims (4)

  1. 　円筒状のコイル部の内側に、固定部が固定状態で設けられるとともに、前記コイル部の軸方向に延在するプランジャが取り付けられた可動ヨークが前記コイル部の軸方向に沿って移動可能に設けられ、前記コイル部の励磁によって前記可動ヨークが前記プランジャとともに前記固定部から離れるように前進し、前記コイル部の消磁によって前記可動ヨークが前記プランジャとともに前記固定部に近づくように後退する電磁ソレノイドにおいて、
    　前記固定部は、前記プランジャが前記可動ヨークとともに後退して前記固定部に衝突する際の衝撃を吸収する衝撃吸収手段を有し、
    　前記衝撃吸収手段は、前記固定部の内部に設けられた収容部に前記軸方向に移動可能に設けられ、かつ後退する前記プランジャの衝突を受けて当該プランジャともに後退する受け部材と、前記収容部に設けられて前記受け部材を前進する方向に付勢する付勢部材と、前進する前記受け部材を所定の位置で規制する規制部とを備え、
    　前記受け部材と、前記収容部に形成されて前記受け部材の後退する方向に対向する対向面との間に緩衝材が設けられていることを特徴とする電磁ソレノイド。     A fixed part is provided in a fixed state inside a cylindrical coil part, and a movable yoke to which a plunger extending in the axial direction of the coil part is attached is provided movably along the axial direction of the coil part An electromagnetic solenoid in which the movable yoke advances together with the plunger away from the fixed part by excitation of the coil part, and the movable yoke retracts toward the fixed part together with the plunger by demagnetization of the coil part ,
    The fixed portion includes impact absorbing means for absorbing an impact when the plunger retracts with the movable yoke and collides with the fixed portion,
    The impact absorbing means is provided movably in the axial direction in an accommodating portion provided in the inside of the fixed portion, and a receiving member which recedes with the plunger upon receiving a collision of the plunger, and the accommodating portion. A biasing member for biasing the receiving member in the forward direction, and a restricting portion for restricting the receiving member to be advanced at a predetermined position,
    An electromagnetic solenoid, wherein a shock absorbing material is provided between the receiving member and an opposing surface formed in the housing portion and facing in a direction in which the receiving member retracts.
  2. 　前記緩衝材は前記受け部材に取り付けられており、この緩衝材と前記収容部の前記受け部材の移動方向に沿う内壁面との間に隙間が設けられていることを特徴とする請求項１に記載の電磁ソレノイド。 The shock absorbing material is attached to the receiving member, and a gap is provided between the shock absorbing material and an inner wall surface along the moving direction of the receiving member of the accommodating portion. Electromagnetic solenoid described.
  3. 　前記緩衝材は前記対向面に設けられていることを特徴とする請求項１に記載の電磁ソレノイド。 The electromagnetic solenoid according to claim 1, wherein the shock absorbing material is provided on the facing surface.
  4. 　前記緩衝材は、前記付勢部材と接触していないことを特徴とする請求項１から請求項３のいずれか１項に記載の電磁ソレノイド。 The electromagnetic shock absorber according to any one of claims 1 to 3, wherein the shock absorbing material is not in contact with the biasing member.
PCT/JP2013/069594 2012-08-10 2013-07-19 Electromagnetic solenoid WO2014024659A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201380042566.4A CN104541340B (en) 2012-08-10 2013-07-19 O
BR112015002925-6A BR112015002925B1 (en) 2012-08-10 2013-07-19 ELECTROMAGNETIC SOLENOID
IN1239DEN2015 IN2015DN01239A (en) 2012-08-10 2015-02-16

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-177819 2012-08-10
JP2012177819A JP5890276B2 (en) 2012-08-10 2012-08-10 Electromagnetic solenoid

Publications (1)

Publication Number Publication Date
WO2014024659A1 true WO2014024659A1 (en) 2014-02-13

Family

ID=50067893

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/069594 WO2014024659A1 (en) 2012-08-10 2013-07-19 Electromagnetic solenoid

Country Status (4)

Country Link
JP (1) JP5890276B2 (en)
BR (1) BR112015002925B1 (en)
IN (1) IN2015DN01239A (en)
WO (1) WO2014024659A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016132467A1 (en) * 2015-02-18 2016-08-25 株式会社ミクニ Electromagnetic solenoid
EP3121946A4 (en) * 2014-03-17 2017-08-23 Nidec Sankyo Corporation Linear actuator
WO2019197231A1 (en) 2018-04-10 2019-10-17 Bayer Aktiengesellschaft Method for producing spiroketal-substituted cyclic ketoenols
FR3145643A1 (en) * 2023-02-02 2024-08-09 Safran Electronics & Defense Monostable electromagnetic actuator and method of manufacturing such an actuator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0634211U (en) * 1992-10-05 1994-05-06 シーケーディ株式会社 Pusher for sorter
JPH0711887U (en) * 1993-07-29 1995-02-21 株式会社京浜精機製作所 Absorption structure of operating noise in electromagnetic devices
JP2008306122A (en) * 2007-06-11 2008-12-18 Keihin Corp Electromagnetic actuator
WO2010029695A1 (en) * 2008-09-11 2010-03-18 株式会社カワサキプレシジョンマシナリ Adjusting screw structure for oil immersed solenoid and oil immersed solenoid with same
CN102623131A (en) * 2011-01-26 2012-08-01 本田技研工业株式会社 Electromagnetism solenoid and combustion motor variable valve mechanism having the electromagnetism solenoid

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0634211U (en) * 1992-10-05 1994-05-06 シーケーディ株式会社 Pusher for sorter
JPH0711887U (en) * 1993-07-29 1995-02-21 株式会社京浜精機製作所 Absorption structure of operating noise in electromagnetic devices
JP2008306122A (en) * 2007-06-11 2008-12-18 Keihin Corp Electromagnetic actuator
WO2010029695A1 (en) * 2008-09-11 2010-03-18 株式会社カワサキプレシジョンマシナリ Adjusting screw structure for oil immersed solenoid and oil immersed solenoid with same
CN102623131A (en) * 2011-01-26 2012-08-01 本田技研工业株式会社 Electromagnetism solenoid and combustion motor variable valve mechanism having the electromagnetism solenoid

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3121946A4 (en) * 2014-03-17 2017-08-23 Nidec Sankyo Corporation Linear actuator
EP3236565A1 (en) * 2014-03-17 2017-10-25 Nidec Sankyo Corporation Linear actuator
WO2016132467A1 (en) * 2015-02-18 2016-08-25 株式会社ミクニ Electromagnetic solenoid
JPWO2016132467A1 (en) * 2015-02-18 2017-11-30 株式会社ミクニ Electromagnetic solenoid
EP3261103A4 (en) * 2015-02-18 2018-10-31 Mikuni Corporation Electromagnetic solenoid
WO2019197231A1 (en) 2018-04-10 2019-10-17 Bayer Aktiengesellschaft Method for producing spiroketal-substituted cyclic ketoenols
US12006327B2 (en) 2018-04-10 2024-06-11 Bayer Aktiengesellschaft Process for preparing substituted cyclohexane amino acid esters and spiroketal-substituted cyclic keto-enols
FR3145643A1 (en) * 2023-02-02 2024-08-09 Safran Electronics & Defense Monostable electromagnetic actuator and method of manufacturing such an actuator

Also Published As

Publication number Publication date
IN2015DN01239A (en) 2015-06-26
JP5890276B2 (en) 2016-03-22
JP2014036180A (en) 2014-02-24
CN104541340A (en) 2015-04-22
BR112015002925B1 (en) 2021-04-27
BR112015002925A2 (en) 2018-05-22

Similar Documents

Publication Publication Date Title
WO2014024659A1 (en) Electromagnetic solenoid
US8669836B2 (en) Magnetic trigger mechanism
EP1805441B1 (en) A solenoid actuated valve with a damping device
KR100909426B1 (en) Actuator
US20160208916A1 (en) Parking device
US7864008B2 (en) Solenoid assembly with shock absorbing feature
JP2009156354A (en) Ball screw device
US9080539B2 (en) Electromagnetic fuel injection valve
US10041551B2 (en) Driving force transmission apparatus
JP6444485B2 (en) Electromagnetic solenoid
US8327760B2 (en) Cam slider shock absorbing member in cam device and mounting method thereof
KR100954525B1 (en) A small size solenoid device
JP2014036180A5 (en)
US20040159811A1 (en) Solenoid valve
US9360076B2 (en) Dampers
US20140166913A1 (en) Pin Mechanism
JP6094012B2 (en) solenoid
JP2019065850A5 (en)
CN104541340B (en) O
JP3185098B2 (en) electromagnet
CN220470773U (en) Electromagnetic valve
JP5917436B2 (en) Shock absorber and linear actuator
US6708947B1 (en) Hysteresis reduction in an exhaust gas recirculation valve
JP2021055616A (en) Electromagnetic fuel injection valve
JP2002349618A (en) Cushioning stopper

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13828636

Country of ref document: EP

Kind code of ref document: A1

DPE2 Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: IDP00201501383

Country of ref document: ID

122 Ep: pct application non-entry in european phase

Ref document number: 13828636

Country of ref document: EP

Kind code of ref document: A1

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112015002925

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 112015002925

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20150210