JP5624739B2 - Method for manufacturing motor side coupling member of beverage dispenser and motor side coupling member - Google Patents

Description

  The present invention is a coupling in which a shaft of a stirring motor is connected, and the driving force of the stirring motor is transmitted via a magnetic action to a stirrer for stirring the powder raw material and water or hot water in the mixing case. The present invention relates to a motor-side coupling member manufacturing method and a motor-side coupling member of a beverage dispenser for manufacturing a member.

  As this type of beverage dispenser that has been conventionally used, the configuration shown in the following Patent Document 1 can be exemplified. That is, in a conventional beverage dispenser, for example, a powder raw material such as tea or soup and water or hot water are stirred by a stirrer in a mixing case to produce a beverage.

  As a method for transmitting the driving force to the stirrer, it is conceivable to mechanically connect the shaft of the stirring motor to the stirrer. For example, a magnet coupling described in Patent Document 2 below can also be used. . When a magnetic coupling is used, a stirring side coupling member is provided at one end of the shaft of the stirring bar, and a motor side coupling member is attached to the shaft of the stirring motor. Then, the driving force of the stirring motor is transmitted to the stirrer through the magnetic action between the stirring side coupling member and the motor side coupling member.

  Here, when the stirrer shaft or the stirrer motor shaft is tilted, the stirrer and the stirrer motor vibrate as the stirrer rotates, and the stirrer motor shaft is coupled to the motor side coupling. It may come off the member. In order to prevent this, a metal retaining member having a shaft hole with a diameter slightly smaller than the shaft diameter (about 0.02 mm) is insert-molded into the motor side coupling member, and the shaft is inserted into the shaft hole. It is possible to press fit.

  And as a method of insert-molding the retaining member to the motor side coupling member, after positioning the retaining member with respect to the mold by inserting the shaft body integrally provided in the mold into the shaft hole of the retaining member A method of injecting resin into the mold cavity is conceivable.

JP 2001-43439 A JP-A-61-203864

  In the motor side coupling manufacturing method of the conventional beverage dispenser as described above, since the retaining member is positioned with respect to the mold by passing the shaft through the shaft hole, when the resin is injected into the mold, The retaining member is tilted by the amount of play between the shaft hole. For this reason, the shaft of the stirring motor press-fitted into the retaining member is also tilted, which causes vibrations of the stirring bar and the stirring motor. This vibration causes a decrease in durability and abnormal noise of the stirring motor.

  The present invention has been made to solve the above-described problems, and its object is to provide a motor-side coupling member manufacturing method and a motor for a beverage dispenser that can suppress the inclination of the retaining member and reduce the occurrence of vibrations. It is to provide a side coupling member.

The method for producing a motor-side coupling member of a beverage dispenser according to the present invention is such that a shaft of a stirring motor is connected and a stirrer for stirring the powder raw material and water or hot water in the mixing case is subjected to magnetic action. A beverage side dispenser motor side coupling member manufacturing method for manufacturing a coupling member for transmitting a driving force of a stirring motor, and a retaining member body provided with a shaft hole into which a shaft of the stirring motor is press-fitted, An outer peripheral portion provided on the retaining member main body coaxially with the shaft hole, a wall portion erected from the outer peripheral position of the bottom surface of the retaining member main body, and a retaining member having a resin supply path provided on the wall portion, and an outer peripheral portion. It has a retaining peripheral surface support protrusion to support, has a first mold disposed on the distal end side of the retaining member main body, and a protrusion entering the inside of the wall portion, and faces the first mold. And a second mold disposed on the distal end side of the wall portion, the outer peripheral portion is supported by the retaining peripheral surface support protrusion, and the retaining member is sandwiched between the first and second molds, Positioning the retaining member relative to the second mold, and after positioning the retaining member, injecting resin into the cavity between the first and second molds, supplying resin to the inside of the wall portion through the resin supply path, The coupling member main body in which the retaining member is insert-molded is formed while forming the concave portion corresponding to the protruding portion inside the portion.
Accordingly, the outer peripheral portion is supported by the retaining peripheral surface support protrusion, and the retaining member is sandwiched between the first and second molds to position the retaining member with respect to the first and second molds. Compared with the case where the retaining member is positioned only by passing through the shaft hole, the inclination of the retaining member can be suppressed, and the occurrence of vibration can be reduced.

The second mold is provided with an abutting portion that abuts against the wall tip of the wall when the retaining member is positioned, and the wall of the abutting portion along the thickness direction of the wall tip. The contact width with respect to the tip is narrower than the thickness of the wall tip, and the coupling member body is molded so that the end surface of the wall tip is covered with resin except for the part where the contact is in contact. To do.
Therefore, since the coupling member body is molded so that the end surface of the wall tip is covered with the resin except for the portion where the abutting portion is abutted, sink marks in which the volume of the resin decreases due to cooling occur in the molded product. In this case, the protrusion of the wall tip can be avoided, and other parts can be prevented from being damaged by the wall tip.

In addition, the motor-side coupling member of the beverage dispenser according to the present invention is connected to the stirring motor shaft and magnetically acts on the stirring bar for stirring the powder raw material and water or hot water in the mixing case. A motor-side coupling member of a beverage dispenser for transmitting a driving force of a stirring motor, including a permanent magnet portion and a resin-molded coupling member body, and a motor side provided on the coupling member body An end face and a coupling side end face, a retaining member body provided with a shaft hole into which a shaft of a stirring motor is press-fitted, a wall portion standing from the outer peripheral position of the bottom of the retaining member body toward the coupling side end face, And a resin supply passage provided in the wall, and a stopper member insert-molded in the coupling member body and provided on the coupling side end surface. Together is, a recess which is located inside the wall, the wall distal end portion of the main body distal portion and the wall portion of the retaining member body is exposed from the motor side end surface and the coupling end face.
Therefore, the main body front end portion of the retaining member main body and the wall front end portion of the wall portion are exposed from the motor side end surface and the coupling side end surface, so that the coupling member main body can be formed by holding the retaining member between the molds. Thereby, compared with the case where positioning of the retaining member is performed by passing the shaft through the shaft hole, the inclination of the retaining member can be suppressed, and the occurrence of vibration can be reduced.

The coupling side end surface is provided with a film portion that is a resin that covers the end surface of the wall tip in a range narrower than the thickness of the wall tip so as to form a groove that exposes the wall tip.
Accordingly, the coating side end surface is provided with a coating portion covering the end surface of the wall tip, so that even if a sink mark is formed on the molded product, it can be more reliably avoided that the wall tip protrudes, and other parts It can be prevented from being damaged by the wall tip.

  According to the motor-side coupling member manufacturing method and motor-side coupling member of the beverage dispenser of the present invention, the inclination of the retaining member can be suppressed and the occurrence of vibration can be reduced.

It is sectional drawing of the mixing unit of the drink dispenser by Embodiment 1 of this invention. It is a perspective view of the motor side coupling member of FIG. It is sectional drawing which follows the line III-III of FIG. FIG. 4 is a perspective sectional view of the retaining member of FIG. 3. It is a perspective view which shows the state which looked at the securing member of FIG. 4 from diagonally downward. It is sectional drawing of the member used for manufacture of the motor side coupling member of FIG. It is explanatory drawing which shows the manufacturing method of the motor side coupling member using the member of FIG. It is a perspective view which shows the state which looked at the motor side coupling member of the drink dispenser by Embodiment 2 of this invention from diagonally downward. It is sectional drawing of the motor side coupling member of FIG. It is explanatory drawing which shows the manufacturing method of the motor side coupling member of FIG.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a cross-sectional view of a mixing unit of a beverage dispenser according to Embodiment 1 of the present invention. In the figure, a mixing unit 1 is disposed below a canister 2 storing a powder raw material such as tea or soup, for example, inside a housing of a beverage dispenser. Although not shown, a door that can be opened and closed is provided on the front surface of the beverage dispenser housing, and the mixing unit 1 and the canister 2 are disposed inside the beverage dispenser that is exposed to the outside when the door is opened. It is arranged on the front side. In the lower part of the canister 2, a screw 21 that is rotated by the driving force of the raw material discharge motor 20 and a discharge port 22 that is located on the tip side of the screw 21 are provided. The powder raw material in the canister 2 is conveyed toward the discharge port 22 by the rotation of the screw 21 and is discharged from the discharge port 22. That is, the powder raw material in the canister 2 is supplied to the mixing unit 1 from above the mixing unit 1. A liquid supply mechanism 3 is disposed on the back of the mixing unit 1, and the liquid supply mechanism 3 supplies water or hot water to the mixing unit 1.

  The mixing unit 1 is provided with a mixing case 10, a mixing cap 11, a holder 12, a stirring motor 13, a motor side coupling member 14, and a stirring bar 15. The mixing case 10 is a container for storing a powder raw material and water or hot water. The mixing cap 11 is a cap attached to the upper rear part of the mixing case 10 and supports the stirring bar 15. The mixing case 10 and the mixing cap 11 are held at the lower part of the holder 12 and can be pulled out with respect to the holder 12.

  On the upper part of the holder 12, a stirring motor 13 and a motor side coupling member 14 are held. The motor side coupling member 14 is attached to the shaft 13 a of the stirring motor 13.

  The stirrer 15 is provided with a rod-shaped shaft portion 15a, a disk-shaped stirring-side coupling member 15b integrally provided at the upper end of the shaft portion 15a, a lower end of the shaft portion 15a, and a stirring blade 15d on the lower surface. And a formed disc portion 15c. The stirring side coupling member 15 b is held by the mixing cap 11 and is disposed so as to face the motor side coupling member 14. The motor side coupling member 14 and the agitation side coupling member 15b include magnets, and the driving force of the agitation motor 13 is transmitted to the agitation element 15 through the magnetic action between the coupling members 14 and 15b. It is done.

  The shaft portion 15 a and the disc portion 15 c of the stirrer 15 are arranged in the mixing case 10. When the disk portion 15c is rotated by the driving force of the stirring motor 13, the powder raw material and hot water or water are stirred by the stirring blade 15d in the mixing case 10 to produce a beverage. The produced beverage is poured out from the lower opening 10a of the mixing case 10 into a container on a stage (not shown) arranged below the mixing unit 1.

  2 is a perspective view of the motor side coupling member 14 of FIG. 1, FIG. 3 is a sectional view taken along line III-III of FIG. 2, and FIG. 4 is a perspective sectional view of the retaining member 141 of FIG. FIG. 5 is a perspective view showing a state in which the retaining member 141 of FIG. 4 is viewed obliquely from below. As shown in FIGS. 2 and 3, the motor-side coupling member 14 includes a disc-shaped coupling member main body 140 formed of resin, a retaining member 141 insert-molded into the coupling member main body 140, and a permanent magnet. 142.

  As shown in FIG. 3, the coupling member main body 140 is provided with a motor-side end surface 143 and a coupling-side end surface 144 that constitute the front and back surfaces of the coupling member main body 140. In other words, the motor side end surface 143 and the coupling side end surface 144 are end surfaces that are spaced apart from each other along the axial direction of the coupling member main body 140. The motor side end surface 143 is an end surface facing the stirring motor 13 (see FIG. 1), and the coupling side end surface 144 is an end surface facing the stirring side coupling member 15b (see FIG. 1).

  The retaining member 141 is disposed at the radial center position of the coupling member main body 140. As shown in FIGS. 4 and 5, the retaining member 141 is provided with a retaining member main body 149, a shaft hole 152, an outer peripheral portion 153, a wall portion 154, and a resin supply path 155 (see FIG. 5). The retaining member main body 149 is a member having a convex cross section composed of a plate portion 150 and a cylindrical portion 151. The plate part 150 is a disk-shaped part, and has first and second end faces 150a and 150b constituting the front surface and the back surface. The cylindrical portion 151 is erected from the first end surface 150a toward the motor side end surface 143 (see FIG. 3). The main body front end portion 151 a that is the front end of the retaining member main body 149, that is, the cylindrical portion 151 is exposed from the motor side end surface 143. The shaft hole 152 is provided in the cylindrical portion 151 and is opened at the motor side end surface 143. The shaft hole 152 has a diameter slightly smaller (about 0.02 mm) than the diameter of the shaft 13 a (see FIG. 1) of the stirring motor 13, and the shaft 13 a of the stirring motor 13 is in the shaft hole 152. The motor-side coupling member 14 is attached to the stirring motor 13 by being press-fitted. In the upper part of the shaft hole 152, a diameter-expanded portion 152a that is increased in diameter toward the main body tip portion 151a is provided. As will be described later with reference to the drawings, the enlarged diameter portion 152a is used for positioning the retaining member 141 when the retaining member 141 is insert-molded in the coupling member main body 140.

  The outer peripheral portion 153 forms the outer peripheral surface of the cylindrical portion 151 and is provided coaxially with the shaft hole 152. The wall portion 154 is a wall erected from the bottom surface of the retaining member main body 149, that is, from the outer peripheral position of the second end surface 150b of the plate portion 150 toward the coupling side end surface 144 (see FIG. 3). The wall tip 154a is exposed from the coupling side end face 144. The resin supply path 155 is a notch provided in the wall portion 154, and is used to supply resin to the inside of the wall portion 154 during insert molding.

  Returning to FIG. 3, the permanent magnet 142 is formed in an annular shape (donut shape), and is disposed outside the retaining member 141 along the radial direction of the coupling member main body 140. The permanent magnet 142 is provided with a plurality of magnetic poles along the circumferential direction. That is, the permanent magnet 142 is provided with a plurality of N poles and S poles alternately along the circumferential direction.

  The motor-side end surface 143 is provided with four central recesses 143 a that expose the outer peripheral portion 153 of the retaining member 141 and four outer peripheral recesses 143 b that expose the upper surface of the permanent magnet 142. Each central recessed part 143a is partitioned by ribs 145, and is a part formed by the entry of a member for supporting the retaining member 141 and the permanent magnet 142 during insert molding. The outer periphery recessed part 143b is arrange | positioned at equal intervals along the circumferential direction of the coupling member main body 140, and the part formed by the member for supporting the end surface of the permanent magnet 142 approaching in the case of insert molding It is.

  A concave portion 144 a is provided at the center of the coupling side end surface 144. As shown in FIG. 1, a convex portion 15e that is in contact with the concave portion 144a is provided at the central portion of the coupling side end surface of the stirring side coupling member 15b, and the motor side coupling member 14 and the stirring side cup are provided. The ring member 15b is arranged coaxially with each other by the concave portion 144a and the convex portion 15e. Moreover, the protrusion amount of the convex part 15e is made larger than the depth of the concave part 144a, and the motor side coupling member 14 and the stirring side coupling member 15b are contacted only by these concave part 144a and convex part 15e. That is, a gap 15f of about 1 to 2 mm, for example, is formed on the outer periphery of the motor side coupling member 14 and the stirring side coupling member 15b.

  6 is a cross-sectional view of members used for manufacturing the motor-side coupling member 14 of FIG. In addition, in FIG. 6, the different cross section of each member is represented by the upper and lower sides of line AA. Specifically, the cross section of the wall portion 154 of the retaining member 141 appears above the line AA, and the resin supply path 155 of the retaining member 141 appears below the line AA. In the drawing, the retaining member 141, the permanent magnet 142, the first mold 201, and the second mold 202 are used for manufacturing the motor side coupling member 14. The first and second molds 201 and 202 are molds disposed to face each other, and the retaining member 141 and the permanent magnet 142 are disposed between the first and second molds 201 and 202.

  The first mold 201 is disposed on the distal end side of the cylindrical portion 151 (the retaining member main body 149) of the retaining member 141. The first mold 201 is provided with a plurality of retaining peripheral surface support protrusions 201a, conical protrusions 201b, a plurality of magnet peripheral surface support protrusions 201c, and a plurality of magnet end surface contact protrusions 201d. Although not shown in detail, the retaining peripheral surface support protrusion 201a, the magnet peripheral surface support protrusion 201c, and the magnet end surface contact protrusion 201d are arranged around the conical protrusion 201b, and the central recess 143a and the outer periphery shown in FIG. Four are provided so as to correspond to the recesses 143b.

  The retaining peripheral surface support protrusion 201a supports the outer peripheral portion 153 of the cylindrical portion 151 on the inner peripheral surface. The conical protrusion 201 b is disposed at the center of each retaining peripheral surface support protrusion 201 a and is inserted into the enlarged diameter portion 152 a of the shaft hole 152. These retaining peripheral surface support protrusions 201a and conical protrusions 201b are used for positioning the retaining member 141 along the radial direction 14a of the motor side coupling member 14 when the motor side coupling member 14 is molded.

  The magnet peripheral surface support protrusion 201c is provided integrally with the retaining peripheral surface support protrusion 201a, and supports the inner peripheral surface of the permanent magnet 142 on the outer peripheral surface. The magnet peripheral surface support protrusion 201 c is used for positioning the permanent magnet 142 along the radial direction 14 a of the motor side coupling member 14 when the motor side coupling member 14 is molded.

  The magnet end surface abutting protrusion 201 d is disposed outside the magnet peripheral surface supporting protrusion 201 c along the radial direction 14 a of the motor side coupling member 14, and is in contact with the end surface of the permanent magnet 142. The magnet end surface abutting protrusion 201d is used for positioning the permanent magnet 142 along the axial direction 14b of the motor side coupling member 14 when the motor side coupling member 14 is molded.

  The second mold 202 is disposed on the distal end side of the wall portion 154 of the retaining member 141. The second mold 202 is formed with a groove 202a having a cylindrical space inside, and a mountain-shaped protrusion 202b is formed at the center of the groove 202a. The protrusion 202b is inserted into the wall 154 when the motor-side coupling member 14 is molded, and forms a recess 144a of the coupling-side end surface 144.

  Next, the manufacturing method of the motor side coupling member 14 using the member of FIG. 6 is demonstrated. FIG. 7 is an explanatory view showing a method of manufacturing the motor side coupling member 14 using the members of FIG. As in FIG. 6, FIG. 7 also shows different cross sections above and below the line BB. First, as shown in FIG. 7, in the state where the first and second molds 201 and 202 are separated from each other, the inner peripheral surface of the permanent magnet 142 is supported by the magnet peripheral surface supporting projection 201c, so that the motor side coupling member The permanent magnet 142 is positioned along the 14 radial directions 14a. Further, the magnet end surface abutting protrusion 201d is brought into contact with the end surface of the permanent magnet 142, and the permanent magnet 142 is attracted to the magnet end surface abutting protrusion 201d by a magnetic force, thereby being along the axial direction 14b of the motor side coupling member 14. The permanent magnet 142 is positioned.

  Further, in a state where the first and second molds 201 and 202 are separated from each other, the outer peripheral portion 153 of the cylindrical portion 151 is supported by the retaining peripheral surface supporting projection 201a, and the conical projection 201b is used as the enlarged diameter portion 152a of the shaft hole 152. The retaining member 141 is positioned along the radial direction 14 a of the motor side coupling member 14.

  Next, the second mold 202 is displaced toward the first mold 201 as indicated by an arrow in the drawing, and the retaining member 141 is sandwiched between the first and second molds 201 and 202. That is, the main body front end portion 151 a of the cylindrical portion 151 is brought into contact with the end surface of the first mold 201, and the wall front end portion 154 a of the wall portion 154 is brought into contact with the end surface of the second mold 202. Accordingly, the retaining member 141 is positioned along the axial direction 14b of the motor side coupling member 14, and the positioning of the retaining member 141 along the radial direction 14a of the motor side coupling member 14 is made stronger.

  After positioning the retaining member 141 and the permanent magnet 142 with respect to the first and second molds 201 and 202, resin is injected into the cavity between the first and second molds 201 and 202. At this time, since the retaining member 141 is held between the first and second molds 201 and 202, the retaining member 141 is prevented from falling down due to the molding pressure. When the resin is injected into the cavity, the retaining member 141 and the permanent magnet 142 are surrounded by the resin. At this time, the resin is supplied to the inside of the wall portion 154 through the resin supply path 155, and a recess 144a (see FIG. 3) corresponding to the protruding portion 202b is formed inside the wall portion 154. The concave portion 144a also serves as a detent for the retaining member 141 and the surrounding resin. Then, the coupling member body 140 in which the retaining member 141 and the permanent magnet 142 are insert-molded is molded by curing the resin.

  According to the motor-side coupling member 14 of such a beverage dispenser, the main body front end portion 151a of the cylindrical portion 151 and the wall front end portion 154a of the wall portion 154 are exposed at the motor-side end surface 143 and the coupling-side end surface 144. The coupling member main body 140 can be formed by holding the retaining member 141 between the molds 201 and 202. Thereby, compared with the case where positioning of the retaining member 141 is performed by passing the shaft body through the shaft hole 152, the inclination of the retaining member 141 can be suppressed, and the occurrence of vibration can be reduced.

  Moreover, according to such a motor-side coupling member manufacturing method of a beverage dispenser, the outer peripheral portion 153 of the cylindrical portion 151 is supported by the retaining peripheral surface support protrusion 201a, and the retaining member 141 is replaced by the first and second molds 201. , 202 is used to position the retaining member 141 with respect to the first and second molds 201, 202, so that the retaining member 141 is positioned as compared with the case where the retaining member 141 is positioned by passing the shaft through the shaft hole 152. The inclination of 141 can be suppressed, and the occurrence of vibration can be reduced.

Embodiment 2. FIG.
FIG. 8 is a perspective view showing a state in which the motor side coupling member 300 of the beverage dispenser according to the second embodiment of the present invention is viewed obliquely from below, and FIG. 9 is a cross section of the motor side coupling member 300 of FIG. FIG. As shown in FIG. 8, an annular groove 301 is provided on the coupling side end surface 144 of the motor side coupling member 300 according to the second embodiment. The annular groove 301 extends along the position of the wall front end 154a of the retaining member 141 and surrounds the recess 144a. As shown in FIG. 9, the annular groove 301 has a film portion 302 that is a resin that covers the end surface of the wall tip 154 a along the thickness direction of the wall tip 154 a in a range narrower than the thickness 154 b of the wall tip 154 a. It is formed by being provided on the coupling side end surface 144. The film part 302 is provided inward from both sides of the annular groove 301, and only the central part of the wall front end part 154 a along the thickness direction is exposed from the coupling side end surface 144 through the annular groove 301.

  Next, the manufacturing method of the motor side coupling member 300 of FIG. 9 is demonstrated. FIG. 10 is an explanatory view showing a method of manufacturing the motor side coupling member 300 of FIG. Similar to FIGS. 6 and 7, FIG. 10 also shows different cross-sections along the line CC. As shown in FIG. 10, the second mold 202 is provided with a contact portion 303 so as to correspond to the wall tip 154 a of the retaining member 141. Although not shown, the contact portion 303 is annularly arranged so as to surround the protrusion 202b when the second mold 202 is viewed from the front. The contact width 303a of the contact portion 303 along the thickness direction of the wall tip portion 154a with respect to the wall tip portion 154a is narrower than the thickness 154b of the wall tip portion 154a. Therefore, when resin is injected into the cavity between the first and second molds 201 and 202, the end surface of the wall tip 154a is covered with the resin except for the portion where the contact portion 303 is in contact. Then, the coupling member main body 300a is formed. Thereby, the coating | coated part 302 which covers the wall front-end | tip part 154a is formed.

  According to such a motor-side coupling member 300 of a beverage dispenser and a method for manufacturing the same, the coating-side end surface 144 is provided with the coating portion 302 that covers the end surface of the wall front end portion 154a, as shown in FIG. Even when sink marks in which the volume of the resin decreases due to cooling occur in the molded product, it is possible to more reliably avoid the protrusion of the wall tip 154a and to prevent other parts from being damaged by the wall tip 154a.

  In the first and second embodiments, it is described that the annular permanent magnet 142 is used, but the method of forming the permanent magnet portion on the motor side coupling member is arbitrary. That is, the permanent magnet may be attached after the coupling member main body in which the retaining member is insert-molded, or the magnetic body is magnetized after the coupling member main body is molded with the resin mixed with the magnetic body. And you may comprise a permanent magnet part.

  In the first and second embodiments, the resin supply path 155 is described as a notch. However, the resin supply path is not limited to this, and may be, for example, a through hole that communicates the inside and outside of the wall portion.

  Further, in the first and second embodiments, it has been described that both the retaining peripheral surface support protrusion 201a and the conical protrusion 201b are used for positioning the retaining member 141 along the radial direction 14a of the motor side coupling member 14. This positioning may be performed using only the retaining peripheral surface support protrusion.

  Furthermore, in the first and second embodiments, the retaining member main body 149 is described as a convex member having a cross-sectional shape including the plate portion 150 and the cylindrical portion 151. However, the retaining member main body has a cylindrical shape having a shaft hole. It may be a member.

  DESCRIPTION OF SYMBOLS 10 Mixing case, 13 Stirring motor, 13a Shaft, 14,300 Motor side coupling member, 140,300a Coupling member main body, 141 Stopping member, 142 Permanent magnet (permanent magnet part), 143 Motor side end surface, 144 Coupling Side end surface, 144a concave portion, 149 retaining member main body, 151a body tip, 152 shaft hole, 153 outer periphery, 154 wall, 154a wall tip, 155 resin supply path, 201 first mold, 201a retaining periphery supporting protrusion , 202 2nd mold, 202b protrusion, 301 annular groove (groove), 302 coating part, 303 contact part, 303a contact part, 303a contact width

Claims (4)

A coupling member is connected to which a shaft of a stirring motor is connected and which transmits a driving force of the stirring motor via a magnetic action to a stirring bar for stirring the powder raw material and water or hot water in the mixing case. It is a motor side coupling member manufacturing method of a beverage dispenser for
A retaining member body provided with a shaft hole into which the shaft of the stirring motor is press-fitted, an outer peripheral portion provided on the retaining member body coaxially with the shaft hole, and an outer peripheral position of a bottom surface of the retaining member body And a retaining member having a resin supply path provided in the wall and the wall,
A first mold that has a retaining peripheral surface supporting protrusion that supports the outer peripheral portion and is disposed on a distal end side of the retaining member main body;
A second mold that has a protrusion that enters the inside of the wall and is disposed on the front end side of the wall so as to face the first mold;
While supporting the outer peripheral portion with the retaining peripheral surface support protrusion, the retaining member is sandwiched between the first and second molds to position the retaining member with respect to the first and second molds,
After positioning the retaining member, the resin is injected into the cavity between the first and second molds, and the resin is supplied to the inside of the wall portion through the resin supply path, and the protrusion is provided inside the wall portion. A method of manufacturing a motor-side coupling member for a beverage dispenser, characterized in that a coupling member body in which the retaining member is insert-molded is formed while forming a recess corresponding to the above. The second mold is provided with an abutting portion that abuts against a wall tip of the wall when the retaining member is positioned, and the abutting along the thickness direction of the wall tip. The contact width of the portion with respect to the wall tip is smaller than the thickness of the wall tip,
2. The motor side of a beverage dispenser according to claim 1, wherein the coupling member main body is formed so as to cover an end surface of the wall tip portion with a resin except for a portion where the contact portion is in contact. Coupling member manufacturing method. The beverage dispenser motor is connected to the stirring motor shaft and transmits the driving force of the stirring motor to the stirring bar for stirring the powder material and water or hot water in the mixing case via a magnetic action. A side coupling member,
A coupling member body including a permanent magnet portion and molded of resin;
A motor side end surface and a coupling side end surface provided in the coupling member body;
A retaining member main body provided with a shaft hole into which the shaft of the stirring motor is press-fitted, a wall portion erected from an outer peripheral position of a bottom portion of the retaining member main body toward the coupling side end surface, and the wall portion A retaining member formed in the coupling member body,
A recess provided on the coupling side end surface and positioned on the inner side of the wall,
The motor-side coupling member of a beverage dispenser, wherein a main body front end portion of the retaining member main body and a wall front end portion of the wall portion are exposed from the motor-side end surface and the coupling-side end surface.   The coupling-side end surface is provided with a film portion that is a resin that covers the end surface of the wall tip in a range narrower than the thickness of the wall tip so as to form a groove that exposes the wall tip. The motor-side coupling member of a beverage dispenser according to claim 3.

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