JPH0727110U - Impact noise reduction solenoid - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] This is a solenoid that reduces impact noise and reduces impact noise when a movable iron core collides with an iron core receiver. [Structure] Movable movable iron core 1, U-shaped frame 3 for sandwiching an exciting coil 7 wound around a cylindrical bobbin 5, an iron core receiver 4 and a cushioning member which are fitted under the cylindrical bobbin 5 and are movable. In the solenoid having 9, the cushioning member 9 is attached to the upper surface of the projecting member 10 in which the leg 11 is planted and fixed to the lower end of the U-shaped frame 3, and the projecting member 10 is fixed to the iron core receiver 4
The buffer member 9 is inserted into a recess provided below the core core 4 and the projecting member 10, and the flange portion of the core core 4 is attached to the lower end of the cylindrical bobbin 5. Four
1 is pressure-contacted via the urging force of the buffer member 9, and the movable iron core 1 is provided between the lower end of the iron core receiver and the lower end of the U-shaped frame 3.
It is configured such that there exist the void portions 8 and 81 that can be displaced with respect to the impact force.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an impact noise reduction type solenoid, and more particularly to an impact noise reduction type solenoid capable of effectively reducing impact noise when a movable iron core collides with an iron core receiver with a simple structure.

[0002]

[Prior art]

 Conventionally, a muffler type solenoid is provided with a small-diameter portion below the iron core receiver and fitted with an annular cushioning material, and an outer frame for holding the cushioning material is attached to the outside of the lower end of the U-shaped frame. Invented.

[0003]

[Problems to be solved by the device]

 Among the conventional sound deadening solenoids described above, the one in which the small diameter portion is provided below the iron core receiver and the annular cushioning material is fitted therein has a drawback that the magnetic resistance is structurally increased and the attraction force and the attraction force are weakened. However, in the case where the outer frame for holding the cushioning material is attached to the outside of the lower end of the U-shaped frame, there is a drawback in that the attachment of the strong outer frame requires a large number of man-hours and processing costs.

[0004]

[Means for Solving the Problems]

 The impact noise reducing solenoid of the present invention was created in order to solve the above-mentioned conventional problems, and includes a movable iron core movable in a tubular bobbin and an exciting coil wound around the tubular bobbin. In a solenoid having a U-shaped frame to be sandwiched, an iron core receiver that is fitted under the tubular bobbin and can be displaced, and a cushioning member, an upper surface of a protruding member having legs fixed to the lower end of the U-shaped frame A cushioning member is attached to the core, the protruding member is inserted into a recess provided under the iron core receiver, and the cushioning member is interposed between the iron core receiver and the protruding member. Characteristically, the flange portion of the iron core receiver is pressed against the lower end portion of the tubular bobbin via the urging force of the cushioning member, and the movable iron core is placed between the lower end portion of the iron core receiver and the lower end portion of the U-shaped frame. Make sure that there is a gap that can be displaced due to impact force. A impact sound relief solenoid, characterized in that form.

[0005]

[Action]

 In the impact noise reduction type solenoid of the present invention, the iron core receiver is movably held via a cushioning member attached to a projecting member having legs fixed to the lower end of the frame, and accordingly, the movable iron core. The cushioning effect acts on the impact force when the steel collides with the iron core receiving part, and the impact noise is further reduced. Further, in the structure of the impact noise reduction type solenoid of the present invention, the magnetic resistance between the projecting member and the iron core receiver can be made sufficiently small, and the deterioration of solenoid characteristics is lessened.

[0006]

【Example】

 Hereinafter, the structure of the impact noise reducing solenoid of the present invention will be described in detail with reference to the drawings. FIG. 1 is a vertical sectional view of an impact noise reducing solenoid of the present invention, and FIG. 2 is a partially exploded perspective view.

A movable iron core 1 that is movable in a tubular bobbin 5, a U-shaped frame 3 that holds an exciting coil 7 wound around the tubular bobbin 5, and a movable iron that is fixed to the upper part of the U-shaped frame 3. A solenoid having a frame lid member 2 having a hole through which the core 1 is inserted, an iron core receiver 4 which is fitted under the tubular bobbin 5 and is movable, and a buffer member 9, and the U-shaped frame 3 has a lower end portion. The protruding member 10 is fixed.

The leg portion 11 of the projecting member 10 is inserted into a hole provided in the frame lower end portion 31 and is caulked, and is firmly planted and fixed to the frame lower end portion 11. A cushioning member 9 made of rubber or the like is attached to the upper surface of the projecting member, and the projecting member 11 is fitted into a recess 43 provided below the iron core receiver 4, and the cushioning member 9 is It is configured to intervene between the iron core receiver 4 and the protruding member 10.

When the movable iron core 1 is separated from the iron core bearing 4, the iron core bearing 4 is biased upward by the biasing force of the buffer member 9. The portion 41 is pressed against the bobbin lower end portion 51 of the tubular bobbin 5, and there is always a gap 8 between the bobbin lower end portion 51 and the frame lower end portion 31. A space 81 is formed between the lower end 31 of the frame and the movable core 1 and is movable with respect to the impact force of the movable core 1.

When the movable iron core 1 is adsorbed and collides with the iron core receiving portion 42, the iron core receiver 4 moves downward against the urging force of the buffer member 9 and the shock absorbing sound is generated by the buffer effect of the buffer member 9. Is reduced.

[0011]

[Effect of device]

 Since the impact noise reduction type solenoid of the present invention has the structure as described above, the impact noise when the movable iron core collides with the iron core receiver can be effectively reduced with a simple structure and the impact noise can be reduced. The magnetic resistance can be sufficiently reduced by the structure of the connecting portion between the installation member and the iron core receiver, and it is possible to provide a shock noise reducing type solenoid that does not deteriorate the solenoid characteristics.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an impact noise reducing solenoid according to the present invention.

FIG. 2 is a partially exploded perspective view of a shock noise reducing solenoid according to the present invention.

[Explanation of symbols]

 1. Movable iron core 2. Frame lid member 3. U-shaped frame 31. Lower end of frame 4. Iron core receiver 41. Flange portion 42. Iron core receiving part 43. Recess 44. Iron core receiving lower end surface 5. Tubular bobbin 51. Bottom of bobbin 7. Exciting coil 8. Void portion 81. Void portion 9. Buffer member 10. Projecting member 11. leg

Claims (2)

[Scope of utility model registration request] 1. A movable iron core movable in a tubular bobbin, a U-shaped frame for sandwiching an exciting coil wound around the tubular bobbin, and a movable iron core receiver fitted under the tubular bobbin. And a solenoid having a cushioning member, wherein a cushioning member is attached to the upper surface of a projecting member having legs fixed to the lower end of the U-shaped frame, and the projecting member is provided below the iron core receiver. An impact noise reduction type solenoid, characterized in that the shock absorbing member is inserted in the recessed portion and is interposed between the iron core receiver and the projecting member. 2. A flange portion of an iron core receiver is pressed against the lower end portion of the cylindrical bobbin via the urging force of a buffer member, and a movable iron core is provided between the lower end portion of the iron core receiver and the lower end portion of the U-shaped frame. The impact noise reduction type solenoid according to claim 1, wherein there is a gap that can be displaced with respect to the impact force of the above.