KR830000325Y1 - Motor timer - Google Patents

Abstract

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Description

Motor timer

1 is an explanatory diagram of a conventional motor timer.

2 is a perspective view of a motor timer of the present invention.

3 is a cross-sectional side view of the motor timer.

4 is an exploded cross-sectional side view.

5 is a plan view of the common fingerboard case.

6 is a plan view of the motor core.

7 is an explanatory diagram of the main parts of a common fingerboard case in which the same direction rotation control lever is inserted;

8 is a plan view of the motor core through which the same gear is projected.

9 is a plan view of the timer case.

10 is an explanatory diagram of the occlusion of the same gear and tooth defect.

11 is a perspective explanatory diagram of a copper contact piece and a protrusion for fixing a contact piece.

12 is an exploded view of main parts of the copper contact piece and the protrusion.

13 is an explanatory diagram of the same bearing member.

14 is an explanatory diagram showing other structures of the copper contact piece and the protrusion part.

Fig. 15 is an explanatory diagram bearing the output shaft as the structure of the other rudder.

The present invention relates to a motor timer having a motor unit and a timer unit formed above and below the common fingerboard case, respectively. In the conventional motor timer of this kind, as shown in FIG. 1 (a), the motor 17 is placed above the timer case 16, and the output difference 18 of the motor 17 is replaced with the timer case 16. The motor timer is configured by inserting it into the case by perforation.

In the above-described timer case 16, a short tooth difference 71 having a long tooth 71a and a short tooth 71b is fitted to the camshaft 7 'like the first (b) and the first (c). The toothed gear 51 fitted to the shaft portion 16c provided in the timer case 16 is engaged with the simple toothed tooth 71 described above, and the output gear 18 with the toothed toothed tooth 51 is engaged. Rotation of the motor 17 is transmitted to the simple toothed tooth 71 via the toothed toothed tooth 51. Thus, the long teeth 71a of the simple tooth tooth 71 are transmitted by one pitch in one rotation of the toothed tooth tooth 51.

If the engagement accuracy of the toothed tooth 71 and the compacted tooth 51 is not held high by the above-described configuration, the transfer amount of one pitch is different from each other by the timer, resulting in a timer that does not perform a predetermined operation at a predetermined time. The above-mentioned engagement precision is an important requirement for such a small timer. Therefore, in the related art, the same structure as in FIG. 1 is employed, and the rotation of the output gear 18 is transmitted to the toothed gear 51 fitted to the shaft portion 16c installed in the timer case 16 so that the toothed gear 51 ), The simple tooth 71 is rotated.

As described above, the shaft portion 16c provided with the toothed gear 51 in the timer case 16 is inserted into the upper portion from the lower side in the drawing and the shortened tooth 71 is not tightly engaged. The toothed gear 51 fitted to the shaft portion 16c of 16a and the shortened gear 71 fitted to the cam shaft 7 'of the lower case 16b are respectively the upper and camshaft 7' of the shaft portion 16c. Moves in the axial direction and sometimes falls off from the shaft portion 16c or the camshaft 7 ', which makes assembly difficult.

It is an object of the present invention to provide a motor timer that is easy to assemble while ensuring the precision of the coupling between the motor unit and the timer unit in a common fingerboard case in view of the above-described drawbacks.

A feature of the present invention is to install a bearing groove and a bearing hole in a common fingerboard case to assemble a motor unit and a timer unit respectively above and below the common fingerboard case, and the rotation of the motor unit is transmitted to face the camshaft fitted to the shaft transfusion. The toothed gear is inserted into the bearing hole so as to protrude toward the timer, and the toothed tooth is engaged with the simple tooth fitted to the camshaft.

The present invention will be described according to the embodiment shown below. As shown in FIG. 2 to FIG. 4, the motor timer has the motor core 2, the motor case 11, and the timer case 12 stacked and fixed on the upper and lower sides of the common fingerboard case 1. have.

On the upper surface of the common fingerboard case 1, as shown in Fig. 5, a box-shaped shaft wall 1a, which is opened upwardly, and a groove 1b for fitting the bearing member 3 of the motor rotor shaft 21 and a plurality of wheels are arranged. A plurality of shaft grooves 1c into which one end of the shaft 41 of the gear 4 is fitted and a bearing hole 1d in which a toothed tooth 5a integrally formed in the output shaft 5 of the motor protrude downward It is.

Large and small struts 1e, 1e, 1f, and 1f are placed in the four corners of the shaft wall 1a, respectively. A protruding restricting wall 1h is formed on one inner side of the shaft wall 1a, and the one-way rotation control lever 6 is arranged as shown in FIG.

A perforation 1g is drilled in the center of the large post 1e. On the lower surface of the common fingerboard case 1, a side wall 1j vertically downward is formed on one side, and the bearing groove 1k of the cam shaft 7 is laid in the vicinity of the bearing hole 1d on the other left side. have.

The motor core 2 is placed on the upper surface of the shaft wall 1a of the common fingerboard case 1 as shown in FIGS. 3 and 6, and a pair of magnetic pole plates 2a and 2b in which a plurality of magnetic plates are stacked. It consists of). Perforations 2c are laid at four locations corresponding to the positions of the posts 1e and 1f. In the upper position of the groove 1b of the common fingerboard case 1 of the motor core 2, a circular curved portion provided with a plurality of magnetic poles 2d is formed.

The above-mentioned one magnetic pole plate 2a is provided with a shaft hole 2e in which the other of the shafts 41 of the plurality of wheel teeth 4 is stored.

2f of perforations are laid in the other magnetic pole plate 2b, and the bearing collar 26 is fitted.

One side of the magnetic pole plates 2a and 2b is respectively It is formed in the shapes 2j, 2k, The coil bobbin 8 covered with the cover 81 is fitted to the core 2 formed in the shape of a child.

The motor case 11 is placed above the motor core 2, and the four corners are provided with holes 11a and 11b to which the large and small struts 1e and 1f are fitted. The perforation 11c is laid in the center of the hole 11a. In the motor case 11 of the upper part of the curved part of the motor core 2, the protrusion 11d, 11e of two steps is formed in upper direction, and the diameter of a large diameter is formed in the inner side of the protrusion 11d, 11e. A shallow groove 11f and a small deep groove 11g are provided. The bearing member 31 of the motor rotor shaft 21 is fitted into the groove 11g. In addition, the projecting portion vertically downward from the motor case 11 between the opposite cutouts 2g and 2h of the curved portions of the magnetic pole plates 2a and 2b in the inner side of the motor case 11. 11h is formed, and the shaft hole 11j is laid in the protrusion part 11h, and the other end of the shaft 41a of the first gear 4a among the above-mentioned wheel teeth 4 is fitted.

The timer case 12 is as shown in FIG. The female side wall 12a is formed. Protrusions 12b, 12c, and 12d are formed inward of the large post 1e and other suitable places inward of the side wall 12a. Screw holes 12e are formed in the projections 12b, and the timer case 12, the common fingerboard case 1, the motor core 2, and the motor case 11 are stacked, and then fixed with screws 13. . The pin 14 is implanted in the upper surface of the protrusion 12c, and the pin 14 is fitted into a hole (not shown) formed in the lower surface of the common fingerboard case 11, so that the timer case 12 of the common fingerboard case 1 is fitted. Positioning takes place when is polymerized. A screw hole 12f is laid in the protruding portion 12d, and the screw 15 is inserted into the screw hole 12f in the through hole 1i laid on one side of the common fingerboard case 1.

A hole 12g is formed in the timer case 12 below the bearing groove 1k provided on the lower surface of the common fingerboard case 1, and the lower side of the cam shaft 7 'is subtracted to protrude out of the case. On one end of the shaft wall 12a of the timer case 12, a plurality of protrusions 12h for fixing the piece are formed, and the pieces 9, 91, 92 are installed.

In the space formed by the common fingerboard case 1, the motor core 2, and the motor case 11, the plurality of wheel teeth 4, the output shaft 5, the motor rotor shaft 21, and the like. The configured motor part 11 'is installed. On the outer circumference of the rotor shaft 11, the boss portion 22 in which the pinion 22a is integrally fitted is fixed, and the permanent magnet 23 is fixed to the boss portion 22 to rotate the magnetic pole plate above and below. (24) (25) is fixed and a rotor is comprised. The rotating magnetic pole plates 24 and 25 touch the curved portions of the motor core 2 described above. In the pinion 22a, the first gear 4a of the rotary gear 4 is engaged. In addition to the toothed tooth 5a, the gear 5b and the supporting part 5c are integrally formed on the output shaft 5. The tooth 5b is engaged with the pinion fixed to the final axis of the shaft 41 of the above-described rotary gear 4.

In the space consisting of the common fingerboard case 1 and the timer case 12, a short fitting fitted to the cam 7 and the cam shaft 7 'formed integrally with the cam 7 as shown in FIGS. The timer part 12 'comprised of the said contact piece 9, 91, 92, etc. which contacted the gear 71 and the cam is provided. The cam 7 is composed of two sets of cams 7 and 7 which are almost similar in shape, and gradually increase with respect to the radius of rotation from the lower positions of the ends 7a, 7b and the upper end to the higher end of the end. It consists of the cam surface 7c, 7d which acts in the direction to which it is going.

The contact pieces 9 and 91 are arrange | positioned on the cam surface 7c, and the contact piece 92 is respectively arrange | positioned on the cam surface 7d. The upper side of the cam 7 is installed in a large perimeter 7e, and grooves are laid in the upper surface of the perimeter 7e, and the ratchet teeth 7f are formed on the inner surface thereof.

The short tooth 71 is fitted to the camshaft 7 'freely as shown in FIGS. 3 and 10 so as to be freely rotated to form a long tooth 71a and a short tooth 71b. One long tooth 71a is provided with respect to three of the short toothed 71b.

A plurality of ratchet fools 71c are formed on the lower surface of the simple tooth difference 71 to be engaged with the ratchet teeth 7f of the blade portion 7e, and the simple tooth tooth 71 is rotated by the above tooth tooth difference 5a. The cam shaft 7 'is configured to rotate. The above contact pieces 9, 91 and 92 are fixed to the above contact piece fixing projection 12h. The protruding portion 12h faces the elongated groove 12j and the elongated groove 12j to which the contact pieces are fitted as shown in FIGS. 9 and 11. It is composed of a projection formed with three surfaces 12k, 12m, and 12n having a shape, and a longitudinal groove 12p formed on the surface 12m.

The width dimension of the groove 12p is formed by (l), and the inclined surface 12q is formed on the upper surface of the groove 12p as shown in FIG. Protruding portions 9a, 91a, and 62a are formed in the base pieces, respectively. The width dimension L 'at the opening side of the inclined surface 12q is equal to the width dimension S of the protrusion 9a and l. S It is configured to have a relationship of l '.

In this way, when the contact piece is fitted into the long groove 12j, the projection 9a is placed on the inclined surface 12q to position the contact piece 9 so that the machine is press-fitted. The same applies to the other pieces 91 and 92. The free end of each contact is fixed to each contact. One end of the lead wire 93 is fixed to the base of the contact piece 19, and the other end thereof is led out of the long hole 12k formed in the side wall 12a of the timer case 12 to be guided to the coil bobbin 8. On the base of each piece protruding from the timer case 12, a faust rab is formed to fit.

As for the bearing members 3 and 31, the flange part 3b and the wing part 3c are integrally formed in the main body 3a like FIG. In the main body 3a and the flange portion 3b, pores 3e and 3f are laid out outside the center hole 3d. The flange 3b is provided with a circular groove 3g and a radial groove 3h to which the above-described pores 3e and 3f touch. In the center of the main body 3a toward the wing 3c, a groove 3j having a diameter larger than that of the center hole 3d is laid.

The pores 3e and 3f are released when air is fitted to the common fingerboard case 1 of the bearing members 3 and 31 and the grooves 1b and 11g of the motor case 11. The rotor shaft 21 is fitted into the ball and the center hole 3d. When lubricating oil enters the wing portion 3c, the lubricating oil is formed along the rotor shaft 21 with the central hole 3d and the radial groove 3h, the circular groove 3g, the pores 3e, 3f, and the wing portion (3). Circulation to 3c).

The supporting portion 3k surrounded by the radial grooves 3h and the circular grooves 3g may be cut to a height such as the grooves 3h and 3g. The wing | blade part 3c is abbreviate | omitted and you may insert oil members, such as a felt, in this part.

When the above-described motor timer is assembled, the cam shaft 7 'is inserted into and fitted into the through hole 12g in the timer case 12, and a contact piece is installed in contact with the cam surfaces 7c and 7d. The short tooth 71 is fitted to the camshaft 7 '. Next, the common fingerboard case 1 is placed on the timer case 12 and fixed with a screw 15. The tip of the camshaft 7 'is fitted into the axial transfusion 1k below the common fingerboard case 1. On the upper surface of the common fingerboard case 1, the lower teeth tooth 5a of the output shaft 5 is inserted and fitted into the bearing hole 1d, and the teeth tooth 5a engages with the simple tooth tooth 71. As shown in FIG. In addition, the water bearing member 3 is formed on the upper surface of the common fingerboard case 1 in the groove 1b, and in the plurality of bearing holes 1c in addition to the shaft 14a of the first gear 4a. 41) is fitted and the one-way rotation control lever 6 is also inserted.

Next, the motor core 2 on which the coil bobbin 8 is mounted is placed on the side wall 1a of the common fingerboard case, and the other end of the shaft 41 of the rotary gear 4 and the other end of the output shaft 5 are placed. It fits into the shaft hole 2e of the core 2 and the shaft hole of the collar 26 for bearing. A rotor falls into a short part, and one end of the rotor shaft 21 is fitted into the center hole 3d of the bearing member 3.

Next, the motor case 11 in which the bearing member 31 is mounted on the motor core 2 is placed, and the rotor shaft 21 is disposed in the central hole 3d of the bearing member and the shaft hole 11j of the protrusion 11h. ) And one end of the shaft 41a of the first gear 4a are fitted, so that the motor case 11 is a timer case 12 together with the motor core 2 and the common fingerboard case 1 with screws 13. It is fixed to).

Next, when the terminal plate 82, the contact piece 91, the lead wire 93, and the terminal plate 83 are fed to the coil of the coil bobbin 8, the rotor is rotated. The rotation of the rotor is transmitted to the gear 5b of the output shaft 5 by intermediating the rotor shaft 21, the first gear 4a, and the rotary gear 4 so that the toothed gear 5a is rotated. The toothed tooth 5a is rotated so that the long teeth 71a of the short toothed tooth 71 move one pitch in its one rotation. The rotation of the simple tooth 71 is caused by the engagement of the ratchet poles 71c and the ratchet teeth 7f so that the cam shaft 7 is rotated so that the contacts of the contact pieces 9, 91, 92 are folded and the switch is opened. .

In the above description, the method of fixing each of the pieces 9, 91, 92 and the piece fixing projections 12h is provided with inclined surfaces 9b on both sides of the lower parts of the pieces 9a of the pieces, as shown in FIG. The position may be satisfactorily determined on the inclined surface 12q provided at the upper end of the groove 12p of the protrusion.

When the inclined surface is provided on the contact piece, the inclined surface 12q of the protrusion may be omitted. The spacing dimension S 'below the inclined surface 9b of the contact piece may be formed in the width dimension L of the groove 12p (S'pℓ). The projections 9a of the contact pieces are provided in two places on the same or opposite side of the contact pieces, and the grooves 12p and It may be fixed by being press-fitted into (12k) or (12n) which is one of the shape faces.

It may be fixed by the female faces 12k and 12n. At this time, inclined surfaces may be provided on both sides of the pair of protrusions 9a. In addition An inclined surface may be provided at the upper end of the shape of the face to facilitate the seating when press-fitting.

FIG. 15 is installed at the lower surface of the common fingerboard case 1 at the lower end of the output shaft 5. In this case, the bearing plate 1d larger than the outer diameter of the toothed tooth portion may be laid in the common fingerboard case 1 in this case.

Since the present invention is constructed as described above, the engagement of the toothed tooth and the toothed tooth can be maintained with high accuracy, and the toothed tooth can be easily assembled since it is rotated directly to the pull-out shaft of the motor.

In addition, the entire motor timer is also assembled in a timer case and a common fingerboard case in order by assembling the motor core and the motor case and fixing screws.

In addition, since one of the timer case and the motor case is formed as a common fingerboard case, other parts scores are omitted, thereby obtaining a motor timer which reduces assembly time and cost of parts.

Claims (1)

In the timer driven by the motor, the bearing groove 1k and the bearing hole 1d are formed in the common fingerboard case 1, and the motor portion 11 'and the timer portion are respectively disposed above and below the common fingerboard case 1. (12 ') and the toothed gear 5a which transmits rotation of the said motor 17 so that the rotation of the said motor 17 may be transmitted corresponding to the cam shaft 7' fitted to the said bearing groove 1k. A motor timer, characterized in that it protrudes toward the timer section (12 ') from 1d) and engages the simple tooth difference (71) fitted to the cam shaft (7') and the above tooth value difference (5a).