JPH0518528U - Electromagnetic solenoid for tapping matsu surge machine - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an electromagnetic solenoid for a tapping massage machine in which the guide bush is prevented from coming off. [Structure] A coil frame 11 having a hollow portion 32 around which an exciting coil 12 to which a pulse voltage is applied is wound.
And a yoke 13 extending over both ends of the coil frame 11.
A fixed iron core 20 fixed to the yoke 13 and inserted into one end of the hollow portion 32 and formed around the through hole 16; and a tubular fixed iron core 20 fitted in the through hole 16. A guide bush 21 having a collar 52 at one end that is locked to the outer end surface, and a collar 5 attached to the yoke 13
2 has a soundproof elastic body 23 that holds down 2 and a movable iron core 15 that slidably passes through the hollow portion 32 and faces the fixed iron core 20, and is connected to the movable iron core 15 and slidably penetrates the guide bush 21. A plunger 14 having a connecting rod 17 is provided, and a beating member 3 that collides with the soundproof elastic body 23 when the exciting coil 12 is not excited is provided at the tip of the connecting rod 17.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to an electromagnetic solenoid for a beating massage machine applied to stiff shoulders and the like.

[0002]

[Prior art]

 A conventional example is shown in FIG. That is, the electromagnetic solenoid for a beating massage machine includes a coil frame 102 having a hollow portion 101 around which an exciting coil 100 to which a pulse voltage is applied is wound, and a yoke 103 straddling both ends of the coil frame 102. A fixed iron core 105 fixed to the yoke 103 and inserted into one end of the hollow portion 101 and having a through hole 104 as a center, and a cylindrical fixed iron core fitted in the through hole 104. A guide bush 107 having a collar 106 at one end locked to the inner end surface of 105, a movable iron core 109 that is slidably passed through the hollow portion 101 and faces the fixed iron core 105, and a movable iron core 109. A plunger 112 having a connecting rod 108 that is connected to the guide bush 107 and slidably penetrates the guide bush 107. Seared member 111 hitting the soundproofing elastic body 110 is provided at the distal end of the connecting rod 108.

The guide bush 107 is formed of an elastic body made of resin that receives the impact of the movable iron core 109 when the movable iron core 109 is attracted by its flange 106, and can reduce the noise when the movable iron core 109 reciprocates to some extent. ing. Further, when the exciting coil 100 is excited to generate an attractive force for attracting the movable iron core 109 to the fixed iron core 105, friction between the connecting rod 108 and the guide bush 107 causes the guide bush 107 to strike the member 111 side. The flange 106 is provided on the movable iron core 109 side to prevent the flange 106 from being pushed out.

[0004]

[Problems to be solved by the device]

 However, in this electromagnetic solenoid for a beating massage machine, the inner circumference of the guide bush 107 becomes soft due to the heat generation of the exciting coil 100 due to the energization of the exciting coil 100, so that the guide bush 107 easily adheres to the outer circumference of the connecting rod 108. Further, since the tapping member 111 obliquely hits the shoulder during the tapping operation, the connecting rod 108 receives a lateral load and the friction between the connecting rod 108 and the guide bush 107 becomes large, and the guide bush 107 is hung on the connecting rod 108 and the connecting rod 108 of FIG. It becomes easy to move to the movable iron core 109 side as indicated by the imaginary line, so that the guide bush 107 may come off to the movable iron core 109 side, or it may be scraped off by the fixed iron core 105 to be missing, resulting in friction, noise, and hitting. There was a problem that the variation in power became large.

Therefore, an object of the present invention is to provide an electromagnetic solenoid for a knocking massaging machine in which the guide bush is prevented from coming off.

[0006]

[Means for Solving the Problems]

 The electromagnetic solenoid for a beating massage machine according to the present invention has an excitation coil to which a pulse voltage is applied wound around the outer periphery thereof, a coil frame having a hollow portion, a yoke extending over both ends of the coil frame, and fixed to the yoke. Has a fixed iron core that is inserted into one end of the hollow portion and that is formed around a through hole, and a flange that is fitted into the through hole and that is cylindrical and that is locked to the outer end surface of the fixed iron core at one end. A guide bush, a soundproof elastic body that is attached to the yoke and presses the brim, and a movable core that is slidably inserted into the hollow portion and faces the fixed core, and is connected to the movable core. A plunger having a connecting rod penetrating the guide bush slidably, and a member for striking the soundproof elastic body when the exciting coil is not excited. But on the tip of the rod.

[0007]

[Action]

 According to the configuration of the present invention, when a pulse voltage is applied to the exciting coil to excite the exciting coil, the movable iron core is attracted to the fixed iron core, and the striking member covered with the beating member connected to the connecting rod of the movable iron core. A beating massage is obtained by tapping. In this case, even if the mutual friction becomes large and the guide bush easily interlocks with the connecting shaft, the guide bush will not come off to the movable core side because the brim is locked to the outer end surface of the fixed iron core. , Also, since the brim is pressed down by the soundproof elastic body, the guide bush cannot be removed even outside. For this reason, the guide bush does not come off from the fixed iron core or is not ground due to the use of the electromagnetic solenoid, and the variations in friction, noise, and tapping force are small, and therefore stable and high tapping force with low noise can be generated. it can.

[0008]

【Example】

 A tapping massage machine to which an embodiment of the present invention is applied will be described with reference to FIGS. 1 and 2. That is, as shown in FIG. 2, this tapping massage machine includes an electromagnetic solenoid 1, a head cover 2 that covers the electromagnetic solenoid 1, and a tapping member 3 that is a beating ball attachment connected to the electromagnetic solenoid 1 near the head cover 2. , A connection spring 4 for supporting the head cover 2 and the electromagnetic solenoid 1, and a grip portion 5 having a drive circuit 28 therein. 26 is a switch and 27 is a power cord.

First, as shown in FIG. 1, the electromagnetic solenoid 1 mainly includes an exciting coil 12 wound around an outer circumference of a tubular coil frame 11, and a yoke 13 extending outside the exciting coil 12 and straddling the coil frame 11. As a fixed member, the plunger 14 is connected to one end of the movable iron core 15 housed in the coil frame 11 for reciprocating movement, and is inserted through the through hole 16 in the central portion of the fixed iron core 20. It is composed of a connecting rod 17. Further, in order to improve the magnetic coupling between the movable iron core 15 and the yoke 13, a flange portion 31 is sandwiched and fixed between the yoke 13 and the coil frame 11, and a magnetic ring 30 for sliding the center of the movable iron core 15 is provided. There is. The length of the sliding portion of the movable iron core 15 is longer than the length of the magnetic ring 30 and is set so that the side surface of the movable iron core 15 contacts the entire inner surface of the magnetic ring 30 at any position of the plunger 14 of the electromagnetic solenoid 1. ing.

An elastic body such as rubber that absorbs the impact of the collar portion 18 is formed between the collar portion 18 protruding to the side of the rear end of the movable iron core 15 and the upper surface of the yoke 13, A soundproof elastic body 19 in which the movable core 15 is inserted is interposed. The fixed core 20 has a tubular shape, is fitted and fixed to the inner peripheral edge of the through hole 33 of the yoke 13, and is mounted on one end side of the hollow portion 32 of the coil frame 11, and is inserted into the through hole 16 of the fixed core 20. A guide bush 21 made of a resin, which is inserted through the connecting rod 17 in a reciprocating manner, is installed to form a sliding portion of the connecting rod 17. That is, as shown in FIG. 3, the outer peripheral surface 55 of the guide bush 21 is press-fitted to the inner peripheral surface 56 of the fixed iron core 20 in the through hole 16 of the fixed iron core 20 with a press-fitting margin of about 0.1 mm. Further, the flange 52 of the guide bush 21 is located on the side of the tapping member 3 and is sandwiched between the outer end surface 54 of the fixed iron core 20 and the soundproof elastic body 23 fixed to the yoke 13. The main gap portion 53 is between the movable iron core 15 and the fixed iron core 20.

Further, in order to improve the magnetic coupling between the fixed iron core 20 and the movable iron core 15 and increase the attractive force of the electromagnetic solenoid 1, the taper of the fixed iron core 20 at the portion where the fixed iron core 20 of the electromagnetic solenoid 1 and the movable iron core 15 face each other. The portion 60 is formed in a substantially mortar shape, and the tip portion 59 of the movable iron core 15 is formed in a substantially conical shape that fits into the tapered portion 60. On the other hand, as shown in FIGS. 1 and 2, two extending plate portions 22 vertically opposed to each other are integrally formed so as to extend outward from a joining portion in the central portion of the yoke 13. A connecting member 4 described below is sandwiched between the two extending plate portions 22.

A tapping member 3 is fixed to the tip of the connecting rod 17 of the plunger 14 and is capable of abutting against a hitting portion such as a shoulder or a waist. A soundproof elastic body 23 for absorbing the impact sound of the tapping member 3 is attached to the lower end portion of the yoke 13, and the pressing portion 58 of the soundproof elastic body 23 holds down the brim 52 of the guide bush 21 and the tapping member. A return spring body 24 for biasing the spring 3 is passed through the connecting rod 17 between the soundproof elastic body 23 and the tapping member 3.

The connecting member 4 is an elongated plate-shaped connecting member made of a magnetic material having a predetermined spring constant, and a connecting hole having a positional relationship similar to that of the extending plate portion 22 of the electromagnetic solenoid 1 is formed at the tip thereof. The tip end portion is interposed between the extension plate portions 22, the rivets 25 are inserted into the respective connection holes, and the rivets are connected and fixed. A power switch 26 and a power cord 27 are installed in the handle portion 5, a drive circuit 28 is installed in the handle portion 5, and the other end of the connecting member 4 is fixedly connected to the front portion. The drive circuit 28 is connected to a commercial power source and intermittently supplies a pulse voltage to the electromagnetic solenoid 1 in order to perform a striking operation each time a pulse voltage is applied.

The operation of the electromagnetic solenoid 1 will be described first. That is, when the power cord 27 is connected to a commercial power source, the grip portion 5 is held in the hand, and the tapping member 3 is brought into contact with a tapped portion such as a shoulder or waist, the plunger 14 is returned from the state shown by the solid line in FIG. When the rod body 24 is compressed, the tapping member 3 collides with the soundproof elastic body 23, and at the same time, the movable iron core 15 is separated from the fixed iron core 20 to the maximum extent. Next, when the power switch 26 is turned on, a pulse voltage is applied to the exciting coil 12 of the electromagnetic solenoid 1 and a pulse current is supplied to the exciting coil 12, whereby the mass of the electromagnetic solenoid 1 is small and the plunger 14 with a small inertia is supplied. The movable iron core 15 is attracted to the fixed iron core 20, the knocking member 3 projects outward from the electromagnetic solenoid 1, and the pushing force (pushing amount) to the hitting portion due to this operation is added to the hitting portion as a tapping force. , The tapping action is performed. Further, since the pulse voltage is applied to the exciting coil 12, the plunger 14 is pushed back by the returning force (load) of the hitting part after the pulse voltage is completed, and the pulse voltage before the pulse voltage is applied to the exciting coil 12 is applied. Return to the state. On the other hand, at the time of tapping, the fixed part of the electromagnetic solenoid 1 having a large mass and large inertia with respect to the plunger 14 moves up and down somewhat with respect to the hit part due to the reaction force of the hitting force. By applying a different pulse voltage to the electromagnetic solenoid 1, the plunger 14 pushes the hitting portion through the tapping member 3 to perform a series of tapping operations.

Here, the inner circumference of the guide bush 21 is softened due to the heat generation of the electromagnetic solenoid 1 due to the energization of the exciting coil 12, so that the guide bush 21 is easily attached to the outer circumference of the connecting rod 17, or the tapping member 3 of the tapping operation is performed. When the connecting rod 17 receives a load from the lateral direction due to the oblique contact with the shoulder and the friction with the guide bush 21 increases and the guide bush 21 tries to move along with the connecting rod 17, as shown in FIG. When the plunger 14 moves in the direction of arrow Y1, movement of the upper surface 57 of the collar 52 is restricted by the outer end surface 54 of the fixed iron core 20, while when the plunger 14 moves in the direction of arrow Y2, the lower surface 58 of the collar 52. Is elastically pressed by the soundproof elastic body 23 and a small amount of the return spring body 24 to restrict the movement, and the tip end portion of the guide bush 21 is As shown in FIG. 3, 70 is released from the press fit of the inner peripheral surface 56 of the through hole 16 of the fixed iron core 20 and swells, so that the guide bush 21 functions as a retaining member. Due to these actions, the guide bush 21 does not come off in the direction of the movable core 15 or the tapping member 3, and the outer peripheral surface 55 of the guide bush 21 is not scraped by the inner peripheral surface 56 of the fixed core 20 and is long. Life can be extended. Further, since there is no contact between the connecting rod 17 and the inner peripheral surface 56 of the fixed iron core 20 or the tip portion 59 of the movable iron core 15 and the tapered portion 60 of the fixed iron core, friction and noise are small and a stable tapping force is applied.

In this embodiment, the hand-held massager that the user holds in his / her hand is used, but it may be applied to other large-sized massagers such as chairs and beds.

[0017]

[Effect of the device]

 In the electromagnetic solenoid for the tapping massage machine of this invention, the guide bush is locked to the outer end surface of the fixed iron core, so even if the guide bush is easily linked to the connecting shaft, the guide bush will come off to the movable iron core side. Also, since the brim is held down by the soundproof elastic body, the guide bush cannot be removed to the outside. For this reason, the guide bush does not come off from the fixed iron core or is not ground due to the use of the electromagnetic solenoid, and the variations in friction, noise, and tapping force are small, so that stable and high tapping force is generated with low noise. The effect is that you can.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an embodiment of the present invention in a non-excited state.

FIG. 2 is a sectional view of a beating massage machine to which the electromagnetic solenoid is applied.

FIG. 3 is an enlarged sectional view of a main part.

FIG. 4 is an exploded perspective view of an electromagnetic solenoid.

FIG. 5 is a sectional view of a conventional example.

FIG. 6 is a partially enlarged view thereof.

[Explanation of symbols]

 3 Tapping member 11 Coil frame 12 Excitation coil 13 Yoke 14 Plunger 15 Movable iron core 16 Through hole 17 Connecting rod 20 Fixed iron core 21 Guide bush 23 Soundproof elastic body 32 Hollow part 52 Collar 54 Outer end surface

Claims (1)

[Scope of utility model registration request] 1. A coil frame having a hollow portion around which an exciting coil to which a pulse voltage is applied is wound, a yoke extending over both ends of the coil frame, and one end of the hollow portion fixed to the yoke. A fixed core that is inserted into the through hole and has a through hole as a center, a guide bush that is fitted in the through hole, and has a flange that is locked to the outer end surface of the fixed core at one end, and the yoke. A soundproof elastic body that is attached to the movable core and that is slidably inserted into the hollow portion and faces the fixed core, and that is slidably attached to the movable core and that guide bush is slidable. A plunger having a connecting rod penetrating therethrough, and a tapping member provided at the tip of the connecting rod for hitting the soundproof elastic body when the exciting coil is not excited. solenoid.