JP3006321U - Vibration generator of paging motor - Google Patents

Abstract

(57) [Abstract] [Purpose] By fixing the rotating shaft of the motor and the weight by welding, the accuracy of the shaft hole of the weight does not matter, the productivity of the product is improved, and the manufacturing cost of the pegger motor is low. A vibration generator is provided. In a vibration generating portion of a motor for a pledger, which comprises a rotating shaft of a motor and a weight eccentrically fixed to the rotating shaft of the motor, a joint portion between the rotating shaft of the motor and the weight is used as an arbitrary welding means. It is made by welding and fixing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vibration generating portion of a motor for a pager in which a weight is eccentrically fixed to a rotary shaft of the motor by using welding means.

[0002]

[Prior art]

 The vibration generating portion of a paging motor is generally formed by fixing a weight on the rotating shaft of the motor in an eccentric state. That is, a shaft hole with a diameter slightly larger than the diameter of the motor rotation shaft is formed in the weight part, the motor rotation shaft is inserted here, and a pin is inserted into the screw hole vertically formed toward the shaft hole. The rotation axis of the motor by pressing it, or by punching the wall top or side surface of the thick wall opposite to the center of gravity of the weight with the shaft hole sandwiched between them to fix the rotation axis of the motor. It goes through the process of doing. According to this method, since the rotation shaft of the motor is gently inserted into the shaft hole of the weight, a step of fixing the both by screwing or caulking is required. In addition to this, an adhesive may be used to integrally fix the weight and the rotary shaft of the motor. As an example of the above-mentioned caulking, No. 1-8858 can be used.

Further, as shown in FIGS. 9 and 10, a sintered material is sintered into a weight 8 shape by using a molding die, and after cooling, the rotary shaft of the motor 6 is inserted into the core pin which is the shaft hole 9. There is also a method of press-fitting No. 4, but secondary processing is required to make the core pin hole size equal to the diameter of the rotating shaft 4 of the motor 6, and the inner wall of the hole is cut with a reamer to manage this press-fitting margin. I was giving the required dimensions. That is, the rotary shaft 4 of the motor 6 was press-fitted into the shaft hole 9 of the weight 8 that was processed with high precision to form the vibration generating portion 7.

[0004]

[Problems to be solved by the device]

 However, according to the method of caulking the hole, the hole size of the core pin opened on the weight side does not match the diameter of the rotating shaft of the motor in the first place, so the caulking of the weight fixes it to the rotating shaft of the motor. Therefore, the weight often ends up being damaged during the caulking work, and there is a very fatal problem for the motor that the caulking force unintentionally and unnecessarily causes the rotating shaft to bend. Has occurred. This is especially serious for small-diameter rotating shafts such as coreless motors. In addition, when the weight is tightened, the material rises around it, and the plating applied to the weight may be cracked or peeled off. If the caulking is not complete, the weight may slip off the rotating shaft, but it is difficult to keep the pressure constant due to the hole diameter tolerance of the jig.

Further, when a sintering method is mainly used for forming the weight, it is extremely difficult to form a small-diameter hole for the shaft hole, that is, the core pin, and accurate press-fitting margin control is impossible in the first place. In order to control the accuracy of production, there was no choice but to rely on secondary processing such as the above reamer processing.

It is more preferable that the generated vibration is large in a pager of the type that notifies an incoming call by vibration, and the larger the specific gravity of the weight that is eccentrically fixed to the rotating shaft of the motor, the larger the generated vibration. However, it is known that as long as the specific gravity is the same, the thinner the thickness, the smaller the load on the rotating shaft, rotor and other parts of the motor, the more stable the operation of the motor, and the longer the service life. . For this reason, it is desirable to use a sintered material with a high content ratio of tungsten, but this makes the hardness of the finished product harder, and secondary processing such as reaming is performed to control the accuracy of the press-fitting margin. In this case, the weight part is hard and it is a difficult task to machine the hole of the core pin, and the reamer wears out significantly.In some cases, the weight may be damaged or the inside of the motor may be adjusted when the rotary shaft of the motor is pressed. It was sometimes crazy.

In any case, in the conventional method of forming the vibration generating portion of the pager motor, caulking processing that involves the risk of damage to each portion is required, and accurate dimensional accuracy of the hole cannot be obtained once. It required some secondary processing such as reamer processing. For this reason, the productivity of the product was low, and the cost of the product was high.

According to the method of integrally fixing the weight and the rotary shaft of the motor by using the above-mentioned adhesive, the weight, the rotary shaft, etc. are improved in order to enhance the adhesive effect before applying the adhesive. It requires a process to wash the oil that has adhered, and there are problems such as the problem that the adhesive flows into the bearing of the motor, dirt on the adhesive surface, and deterioration of the adhesive strength due to aging of the adhesive. It was

The present invention solves the above-mentioned various problems, does not have the problem of damaging each part as in the conventional caulking process, and has a secondary process such as reaming process before fixing the weight and the rotary shaft of the motor. Vibration of paging motors that does not require processing steps, does not cause problems with adhesives, does not care about the accuracy of the shaft hole of the weight, improves product productivity and reduces manufacturing costs. The challenge is to provide the generator.

[0010]

[Means for Solving the Problems]

 The above-mentioned problem is that in a vibration generating part of a motor for a pledger, which is composed of a rotating shaft of a motor and a weight fixed to the rotating shaft of the motor in an eccentric state, the welding part of the rotating shaft of the motor and the weight is arbitrarily welded. This is achieved by forming a vibration generating portion of the pager motor by welding and fixing it by means. As the welding means, gas welding, electric welding, laser welding or the like can be arbitrarily used.

Further, the joint portion between the rotating shaft of the motor and the weight attached to the rotating shaft of the motor is welded and fixed at the opening portion of the weight through which the rotating shaft of the motor is inserted. Further, a hole reaching the rotary shaft of the motor is provided on the side surface of the weight, and the hole is welded and fixed. Regarding the holes, it is assumed that the holes are slit-shaped in the longitudinal direction of the weight along the rotation axis of the motor, or the holes are spot-shaped.

[0012]

[Action]

 According to the present invention, the weight is integrally fixed to the rotary shaft of the motor by welding the joint portion of the rotary shaft of the motor and the weight attached to the rotary shaft of the motor by any welding means. At this time, it is not necessary to be aware of this point, since the above-mentioned highly accurate press-fitting margin management is unnecessary. Further, since no impact is applied to the weight, the rotary shaft, the internal mechanism of the motor, and the like, a defect such as shaft bending due to this does not occur, and a problem relating to the adhesive such as fixing by adhesion does not occur. That is, in the configuration of the present invention, since basically only the welding process is performed, the accuracy of the shaft hole of the weight does not matter, the product yield is improved, the productivity is improved and the manufacturing cost is reduced. High bond strength is guaranteed over a long period of time. Further, this configuration also contributes to downsizing of the whole.

In the above-mentioned operation, even if the weight is inserted through the rotary shaft of the motor and fixed by welding, the side surface of the weight is provided with a hole reaching the rotary shaft of the motor, and the hole is fixed by welding. The same can be seen whether the inner hole is formed in a slit shape in the longitudinal direction of the weight along the rotation axis of the motor or in a spot shape. The rotary shaft is exposed in this hole portion, and welding is performed here. Even if such a hole is provided, it is easy to form this hole, and it is almost unnecessary to pay attention to the shape and dimensional accuracy of the hole.

It should be noted that, regardless of which means such as gas welding, electric welding, laser welding or the like is used as the welding means, it can be considered that the effects obtained are basically the same. Since the weight and the rotating shaft are melted and solidified at the welded portion and integrated, there is no problem even if the portions other than the welded portion are not in close contact.

[0015]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to these embodiments.

1 and 2 show a first embodiment of the present invention, a weight 2 is provided with a shaft hole 3 for inserting a rotary shaft so as to penetrate the weight 2, After the rotary shaft 4 of 6 is inserted into the shaft hole 3 of the weight 2 up to the opening 30 at the tip of the shaft hole 3, the joint between the weight 2 and the rotary shaft 4 of the opening 30 is electro-welded. It is a vibration generating portion 1 of a motor for paging, which is formed by forming a welded portion 5. The weight 2 of this embodiment has a thick portion 20 around the shaft hole 3 of the rotary shaft 4.

In this embodiment, the weight 2 is integrated with the rotary shaft 4 of the motor 6 by welding the joint portion between the rotary shaft 4 of the motor 6 and the weight 2 attached to the rotary shaft 4 by electric welding. Fixed to. Since the weight 2 and the rotating shaft 4 are melted and solidified in the welded portion 5 to be integrated, there is no problem even if the portions other than the welded portion 5 are not in close contact with each other. That is, there is no need for highly accurate press-fitting margin management for the shaft hole 3, and there is no problem even if the shaft hole 3 is loose with respect to the rotary shaft 4. Instead, the weight, the rotary shaft, and the internal mechanism of the motor as in the conventional case. Since no impact is applied to the shaft, defects such as shaft bending due to this will not occur. In addition, there is no problem with the adhesive such as fixing by adhesion.

In the drawing, the opening 30 side where the welded portion 5 is formed is shown by an arrow A, but welding to this side is facilitated by standing the motor, and there is a merit that this welding process can be automated. . The weight 2 and the rotary shaft 4 may be fixed by welding at the opening on the motor 6 side (arrow B side) with respect to the opening 30 on the arrow A side.

The configuration of the present embodiment basically only undergoes an electric welding process, does not require secondary processing as in the conventional case, and does not care about the accuracy of the shaft hole 3 of the weight 2. The yield of products is improved, the productivity is improved, the manufacturing cost is reduced, and high bond strength is guaranteed for a long period of time.

Next, FIGS. 3 and 4 show a second embodiment of the present invention. The weight 21 of this embodiment is such that most of the thick portion 20 of the weight 2 of FIG. Then, the slit 22 is formed so that a part of the rotary shaft 4 can be seen, and the slit 22 can be irradiated with laser light. That is, a shaft hole 31 for inserting a rotary shaft is formed in the weight 21 so as to penetrate the weight 2, and the shaft hole 31 is located on the opposite side of the center of gravity g of the weight 21 with the shaft hole 31 in between. The slit 22 is formed in this portion by reaching the wall surface of the thick portion, and after inserting the rotary shaft 4 of the motor 6 deeply into the shaft hole 31 of the weight 21, the weight 21 of the slit 22 and the rotary shaft 4 are inserted. A welded portion 50 is formed by laser welding at the joint portion with.

When a welding laser is applied to the joint between the weight 21 of the slit 22 and the rotary shaft 4, the weight 21 and the rotary shaft 4 are melted and solidified at the laser-irradiated portion, and both are fixed together. It At this time, there is no problem even if the weight 2 and the rotating shaft 4 are not in close contact with each other except the welded portion 50. That is, there is no need for highly accurate press-fitting margin management for the shaft hole 31, and there is no problem even if the shaft hole 31 is loose with respect to the rotary shaft 4. Instead, the weight, the rotary shaft, and the internal mechanism of the motor are replaced by conventional ones. Since no impact is applied, no defects such as shaft bending will occur due to this. In addition, there are no problems with adhesives such as fixing by adhesion.

The structure of the present embodiment basically only undergoes a laser welding process, does not require secondary processing as in the past, and does not care about the accuracy of the shaft hole 31 of the weight 21. In addition, the yield of the product is improved, the productivity is improved, the manufacturing cost is lowered, and the high bond strength is guaranteed for a long period of time.

In this embodiment, the slit width is 0.3 mm and the beam diameter of the laser beam is 0.8 mm. This is a relatively suitable example, but it is not related to the slit width or the beam diameter. Further, in the drawing, the slit 22 is drawn wide so as to be easily visible.

By the way, the weight that is eccentrically fixed to the rotating shaft of the motor increases the vibration generated as the amount of weight imbalance increases, that is, as the center of gravity of the weight moves away from the rotating shaft in one direction. As shown in FIG. 1, since the first embodiment requires the shaft hole 3 for inserting the rotary shaft 4, the center of gravity position G is opposite to the direction in which the shaft hole 3 is sandwiched. A part of the weight 2 (the thick portion 20) exists as a peripheral wall of the shaft hole 3, and the weight of the thick portion 20 acts to bring the position of the center of gravity G closer to the rotary shaft 4 side. If the thick portion 20 is unnecessary, a smaller weight may be used to obtain the same amount of imbalance, and a larger weight may be obtained if the weight has the same size. . This situation applies to all vibration generating parts of conventional pager motors and other motor-type vibrators.

In the case of the present embodiment, the thick portion 20 in the chain line shown in FIG. 3 is unnecessary, and as will be apparent from FIG. 4, the weight 21 corresponding to the tip portion of the rotary shaft 4 is provided. In the front part, the thick part is cut to the position of the diameter line to form the cut surface 23. For this reason, the position of the center of gravity g moves away from the rotary shaft 4, a larger amount of imbalance can be obtained than in the first embodiment, and vibrations are large despite the smaller and lighter weight 21. Further, since the weight 21 is downsized and the workability at the time of insertion is improved, the cost can be further reduced. Further, since the thick portion 20 which has been indispensable in the past is not necessary, the limitation in designing the shape of the weight 21 is removed, and it is also a feature that a more flexible shape can be devised.

Next, FIGS. 5 and 6 show a third embodiment of the present invention. In this embodiment, the rotary shaft 40 of the motor 6 is bent, and the linear shaft hole 32 is formed. When the rotary shaft 40 of the motor 6 is inserted inside, the rotary shaft 40 of the motor 6 is deformed to cause elastic deformation, and the function of temporarily fixing the weight 24 to the rotary shaft 40 is obtained. The same laser welding as in the second embodiment is used to form the welded portion 50 to configure the vibration generating portion 11 of the paging motor.

That is, similarly to the second embodiment, the weight 24 from which the thick portion 20 is removed is formed with the shaft hole 32 having the slit 25 for inserting the rotary shaft 40 in the direction of the arrow in FIG. On one edge of the slit 25, hooking protrusions 26A are provided inwardly at both ends in the longitudinal direction of the slit 25, and on the other edge, hooking protrusions 26B are provided at the center of the slit 25 in the longitudinal direction. It is formed by projecting. Into the shaft hole 32 of the weight 24 thus formed, the rotary shaft 4 of the motor, which is formed by bending the vicinity of the tip end portion in advance, is inserted from the bent portion 41, and the center of the slit 25 of the weight 24 is inserted. The welding portion 50 is formed by laser welding at the contact portion between the hooking protrusion 26B of the portion and the bent portion 41 of the rotary shaft 40.

As is apparent from FIG. 6, since the bent portion 41 of the rotating shaft 40 is forcibly deformed by the linear shaft hole 32 of the weight 24 to a state close to the linear shape, the rotating shaft 40 is deformed. Elastic force is generated. In the rotary shaft 40 fitted in the shaft hole 32 from the direction of the arrow in FIG. 5, the bent portion 41 is the locking projection 26B, and the portions located at both ends of the shaft hole 32 in the longitudinal direction are the locking projections 26A. It has been suspended. As a result, although the shaft hole 32 is somewhat loosened, the weight 24 is fixed to the rotary shaft 40 of the motor 6 and ends. Although this fixing is almost sufficient, the welded portion 50 is further formed by laser welding at the contact portion between the hooking protrusion 26B at the center of the slit 25 of the weight 24 and the bent portion 41 of the rotary shaft 40. It is characterized by points. The rotating shaft 40 may be made of a material that causes plastic deformation.

Now, when a laser for welding is irradiated to the contact boundary portion between the hooking protrusion 26B at the center of the slit 25 of the weight 24 and the bent portion 41 of the rotating shaft 40, the laser irradiation portion rotates with the weight 24. The shaft 40 is melted and solidified, and both are fixed together. In this embodiment, the elastic deformation of the rotary shaft 40 and the fixing force by the hooking protrusions 26A and 26B as well as the fixing by the laser welding eliminates the need for highly accurate press-fitting margin control for the shaft hole 32. Since no impact is applied to the weight, the rotating shaft, or the internal mechanism of the motor as in the past, defects such as shaft bending due to this will not occur. In addition, there are no problems with adhesives such as fixing by adhesion. As a result, the accuracy of the shaft hole 32 of the weight 24 does not matter, the yield of the product is improved, the productivity is improved, the manufacturing cost is reduced, and the high bonding strength is guaranteed for a long period of time.

As in the second embodiment described above, the thick portion 20 in the first embodiment is unnecessary in this embodiment, and a larger imbalance amount than that in the first embodiment can be obtained. It has the effect of becoming a smaller and lighter weight 24. The position of the center of gravity g at this time is obviously located farther from the rotation shaft 40 than the position of the center of gravity G of the first embodiment, and if the weights have the same size, the generated vibration is large. Further, since the weight 24 is downsized and the workability at the time of insertion is improved, the cost can be reduced. Further, since the thick portion 20 which has been indispensable in the past is unnecessary, restrictions are removed in designing the shape of the weight 24, and a more free shape can be devised.

As an advantage of forming the welded portion 50 by using laser welding, for example, the irradiation time of the laser beam is as short as 0.1 seconds, and the lens is controlled. The diameter of the irradiation spot can be easily changed and adjusted, the laser beam can be scanned to weld a desired fixed area, and the welding operation can be automated. And so on.

Next, FIGS. 7 and 8 show a fourth embodiment of the present invention. In the weight 27 of this embodiment, a shaft hole 3 for inserting the rotary shaft 4 penetrates the weight 27. In addition, a round hole 29, which is one of the above-mentioned holes (spot-like), is formed in a part of the thick part 28 on the opposite side of the center of gravity position G of the weight 27 and the shaft hole 3. It is opened so as to penetrate to the hole 3, and after inserting the rotary shaft 4 of the motor 6 into the shaft hole 3 of the weight 27, the portion of the weight 27 around the round hole 29 and the rotary shaft 4 of the motor 6 are joined. This is a vibration generating portion 12 of a pager motor, which is formed by forming a welded portion 51 by gas welding inside a portion, that is, a circular hole 29.

In this embodiment, the weight of the rotating shaft 4 of the motor 6 and the weight 27 attached to the rotating shaft 4 of the motor 6, that is, the inside of the round hole 29 is welded by gas welding. 27 is integrally fixed to the rotating shaft 4 of the motor 6. Since the weight 27 and the rotating shaft 4 are melted and solidified in the welded portion 51 to be integrated, there is no particular problem even if the portions other than the welded portion 51 are not in close contact with each other. Therefore, there is no need for high-precision press-fitting control for the shaft hole 3, and there is no problem even if the shaft hole 3 is loose with respect to the rotary shaft 4. Instead, the weight, the rotary shaft, and the internal mechanism of the motor can be replaced with conventional ones. Since no impact is applied, problems such as axis bending due to this will not occur. In addition, there are no problems with the adhesive, such as fixing the weight using adhesive.

The configuration of the present embodiment basically only undergoes a gas welding process, does not require secondary processing as in the past, does not care about the accuracy of the shaft hole 3 of the weight 27, and The yield is improved, the productivity is improved, the manufacturing cost is reduced, and high bond strength is guaranteed for a long period of time. Although the shape of the hole is the round hole 29, it is needless to say that other than this, for example, a square hole or the like may be opened.

The present invention can be applied to the entire vibration generating part of a so-called pager motor, but it can also be used to notify an incoming call due to vibration of a mobile phone or the like. In either case, a coreless motor is often used as the motor in order to reduce the size and weight of the device. The vibration generation part of the pager motor is more preferable because the vibration of the so-called pager informs that the pager is being called by a sensory vibration rather than a voice such as an electronic sound. It is clear. As described above, the weight that is eccentrically fixed to the rotating shaft of the motor can increase the vibration generated when the specific gravity of the weight is large. It is known that the load on each part of the motor such as the rotor is reduced, the operation of the motor is stabilized, and the service life is extended. For this reason, it is also preferable to use a sintered weight that mainly uses a super-polymerized gold material having a high content ratio of tungsten.

The present invention is not limited to the above-described embodiment, the material and shape of the weight are basically arbitrary, welding means can be appropriately selected, and the welding place is also free within a possible range. Even if a component such as a bush is interposed between the rotating shaft of the motor and the weight, it is assumed that this component is included in either the rotating shaft or the weight. A general motor-type vibrator having a structural part is also within the scope of the present invention. Also, the type of motor used is not particularly limited. In addition, in the above-mentioned laser welding, when welding is performed in the atmosphere, a phenomenon in which the welded portion is oxidized can be seen. However, if formation of this oxide film is considered to be unfavorable, it is not possible to use argon gas or the like. Welding work may be performed in an active gas atmosphere. When the present invention is manufactured using an automatic welding device, the hole on the side surface of the weight of the present invention is a welding target and can serve as a mark for this purpose, so the hole shape conforming to this purpose is adopted. It is also possible.

[0037]

[Effect of device]

 As described above, the present invention is a vibration generating part of a motor for a pledger, which comprises a rotary shaft of a motor and a weight eccentrically fixed to the rotary shaft of the motor. Since it is the vibration generating part of the pager motor that is welded and fixed by means, defects such as shaft bending unlike the conventional caulking process do not occur, high-precision press-fitting margin control is unnecessary, and it is It is possible to reduce the number of secondary processing steps such as reamer processing prior to fixing the motor to the rotary shaft, so that the weight, rotary shaft, and internal mechanism of the motor are not impacted, and it is possible to finish them by damaging them. This problem does not occur, various problems related to the adhesive such as fixing by adhesion do not occur, and welding ensures high bond strength over a long period of time, and this configuration also contributes to downsizing of the whole. Consist of.

As a result, the accuracy of the shaft hole of the weight does not matter, the product yield and productivity are improved, the manufacturing cost is reduced, and the intended purpose can be achieved.

[Brief description of drawings]

FIG. 1 is a front view of a first embodiment of the present invention.

FIG. 2 is a partially cutaway side view of the first embodiment.

FIG. 3 is a sectional view taken along line XX of the second embodiment of the present invention.

FIG. 4 is a plan view of the second embodiment.

FIG. 5 is a front view of a third embodiment of the present invention.

FIG. 6 is a plan view of the third embodiment.

FIG. 7 is a sectional view taken along line YY of the fourth embodiment of the present invention.

FIG. 8 is a side view of the fourth embodiment.

FIG. 9 is a front view of a conventional example.

FIG. 10 is a partially cutaway side view of a conventional example.

[Explanation of symbols]

 1 Vibration generation part 10 Vibration generation part 11 Vibration generation part 12 Vibration generation part 2 Weight 20 20 Thickness part 21 Weight 22 Slit 23 Cutting surface 24 Weight 25 Slit 26A Locking protrusion 26B Locking protrusion 27 Weight 28 28 Thick part 29 Round hole 3 Shaft Hole 30 Opening Portion 31 Shaft Hole 32 Shaft Hole 4 Rotating Shaft 40 Rotating Shaft 41 Bending Part 5 Welding Part 50 Welding Part 51 Welding Part

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[Procedure amendment]

[Submission date] March 30, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] Figure 9

[Correction method] Added

[Correction content]

[Figure 9]

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 10

[Correction method] Added

[Correction content]

[Figure 10] ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] July 29, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 6

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 7

[Correction method] Change

[Correction content]

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 8

[Correction method] Change

[Correction content]

Claims (8)

[Scope of utility model registration request] 1. A vibration generating part of a motor for a pledger comprising a motor and a weight fixed to a rotating shaft of the motor in an eccentric state, wherein a joint portion between the rotating shaft of the motor and the weight is connected to an arbitrary welding means. The vibration generating part of the motor for the pager, which is fixed by welding. 2. A vibration generating portion for a pager motor according to claim 1, wherein the vibration generating portion is welded and fixed at an opening of a weight through which a rotary shaft of the motor is inserted. 3. A vibration generating portion for a pager motor according to claim 1, wherein a hole reaching the rotary shaft of the motor is provided on a side surface of the weight, and the hole is welded and fixed. 4. The vibration generating part of the pager motor according to claim 3, wherein the hole is formed in a slit shape in the longitudinal direction of the weight along the rotation axis of the motor. 5. The vibration generating part of the pager motor according to claim 3, wherein the holes are spot-shaped. 6. The method according to claim 1, wherein the welding means is gas welding.
The vibration generating part of the pager motor according to claim 5. 7. The welding means is electric welding.
The vibration generating part of the pager motor according to claim 5. 8. The vibration generating portion of the pager motor according to claim 1, wherein the welding means is laser welding.