CN1494196A

CN1494196A - Copper inserting part and vibration motor with the same

Info

Publication number: CN1494196A
Application number: CNA021376972A
Authority: CN
Inventors: 白木学
Original assignee: Shicoh Motor Shanghai Co Ltd
Current assignee: Shicoh Motor Shanghai Co Ltd
Priority date: 2002-10-30
Filing date: 2002-10-30
Publication date: 2004-05-05
Anticipated expiration: 2022-10-30
Also published as: CN1238945C

Abstract

With being riveted with rotating shaft of vibrating motor, the divided copper will not generate damage on its high spot. Groove for the rotating shaft to be inserted is opened on surface of the divided copper. Two lobes with even thickness faced each other are setup at two sides of the groove. Medial surfaces and lateral surfaces of the lobes are bended in arc shape along circumferential face of rotating shaft inserted in groove, and space between tops of two lobes is less than diameter of the rotating shaft inserted in groove.

Description

Divide copper and the vibrating motor that this minute copper is installed

Technical field

The present invention relates to vibrating motor, particularly a kind of vibrating motor that is fixed in the branch copper on the vibrating motor gyroaxis and this minute copper is installed.

Background technology

Japan Patent discloses the branch copper that uses in a kind of vibrating motor No. 2518781.As shown in figure 18, this minute copper 101 upper surfaces be formed with the groove 103 that can insert gyroaxis 105, the medial surface 107a that groove top protuberance forms 107, two projectioies 107 of two projectioies that face one another is a vertical plane, lateral surface 107b is a taper surface.In order to divide copper 101 to be fixed on the gyroaxis 105, supporting mould should be placed on the taper surface and make projection 107 carry out riveted towards gyroaxis 105.

But, when the projection 107 of above-mentioned minute copper when gyroaxis carries out riveted, usually on the base portion 107c of projection 107, produce crack performance (representing with K among the figure).This is because projection 107 thickness low LCL is even, cause protruding 107 rivetings and the time deformation bigger, stress just concentrates on the base portion 107c of projection 107 easily, thereby causes be full of cracks.

Summary of the invention

Therefore, the purpose of this invention is to provide a kind of minute copper, it can not produce damage at its high spot with the gyroaxis riveted time.

According in of the present invention minute copper, divide the copper upper surface to offer the groove that can insert gyroaxis, the groove both sides are provided with mutual face-off and thickness projection uniformly, and the medial surface of described projection and lateral surface bend to spacing between the top of projection of circular-arc and mutual face-off less than the diameter of the gyroaxis that injects groove along the outer peripheral face of the gyroaxis that injects groove.

Because the thickness of groove both sides projection is more even, therefore when riveted, the active force that is applied on the projection is relatively more balanced.Because protruding medial surface and lateral surface bend to circular-arcly along the gyroaxis outer peripheral face, so the deformation quantity of projection is less during riveted, stress is difficult to concentrate on the base portion of projection, prevents that base portion from producing be full of cracks again, thus the damage of projection when avoiding riveted.In addition and since convex top between spacing less than the gyroaxis diameter, so the distance between protruding medial surface and the gyroaxis outer peripheral face just shorten, thereby reduced the riveted amount on the projection.

In above-mentioned minute copper, channel bottom is made of a plurality of continuous tabular surfaces.Because channel bottom is made of a plurality of tabular surfaces,,, thereby reduce manufacturing cost even do not adopt adhesives also minute copper can be firmly fixed on the gyroaxis so the outer peripheral face of gyroaxis will be crimped on a plurality of tabular surfaces of channel bottom behind the riveted.

Another object of the present invention provides a kind of well-set vibrating motor.This vibrating motor comprises:

The branch copper of said structure; And

Be fixed in the described minute gyroaxis in the copper groove.

Description of drawings

Fig. 1 is the generalized section according to the branch copper of first embodiment of the invention, and wherein Fig. 1 (a) expression has been inserted gyroaxis but the branch copper of riveted not, and Fig. 1 b represents the high spot branch copper behind the riveted.

Fig. 2 is a branch copper shown in Figure 1 stereogram when inserting gyroaxis.

Fig. 3 is the vertical view of shown in Figure 2 minute copper.

Fig. 4 is the end view of shown in Figure 2 minute copper.

Fig. 5 is the front view of shown in Figure 2 minute copper.

Fig. 6 is the rearview of shown in Figure 2 minute copper.

Fig. 7 is the stereogram of the branch copper of second embodiment of the invention when inserting gyroaxis.

Fig. 8 is the vertical view of shown in Figure 7 minute copper.

Fig. 9 is the end view of shown in Figure 7 minute copper.

Figure 10 is the front view of shown in Figure 7 minute copper.

Figure 11 is the rearview of shown in Figure 7 minute copper.

Figure 12 is the stereogram when inserting gyroaxis according to the branch copper of third embodiment of the invention.

Figure 13 is the vertical view of shown in Figure 12 minute copper.

Figure 14 is the end view of shown in Figure 12 minute copper.

Figure 15 is the front view of shown in Figure 12 minute copper.

Figure 16 is the rearview of shown in Figure 12 minute copper.

Figure 17 is the stereogram when inserting gyroaxis according to the branch copper of fourth embodiment of the invention.

Figure 18 is the generalized section of the branch copper of prior art.

Embodiment

Below by accompanying drawing preferred embodiment of the present invention is described in detail.

As shown in Figure 2, divide copper 1 to be fixed on the gyroaxis 5 of vibrating motor 3, therefore produce vibration along with the rotation of gyroaxis 5.In the present embodiment, as illustrated in Figures 5 and 6, see, divide slightly semicircular in shape shape of copper 1 as axis direction (horizontal direction) along the gyroaxis 5 of vibrating motor 3.

As shown in Figure 1a, divide copper 1 upper surface to offer the groove 7 that can insert gyroaxis 5, these groove 7 both sides are respectively equipped with projection 9, and the thickness of projection 9 from base portion 9d to part between the 9a of top relatively evenly and the horizontal direction setting when the gyroaxis 5 of vibrating motor 3 inserts.Two parts of projection 9 stand facing each other mutually, and its medial surface 9b and lateral surface 9c bend to circular-arc along the outer peripheral face 5a of gyroaxis 5.In the present embodiment, the medial surface 9b and the lateral surface 9C of projection 9 have identical radian with the outer peripheral face 5a of gyroaxis 5.When gyroaxis 5 inserts grooves 7, will between the outer peripheral face 5a of the medial surface 9b of projection 9 and gyroaxis 5, be reserved with and set gap S, so when gyroaxis 5 reeve grooves 7, can not feel narrow.Again because of the diameter of the spacing H between the top ends 9a of projection 9, so can't insert gyroaxis 5 from the opening part (promptly between the top 9a of projection 9) of groove 7 and can only insert gyroaxis 5 by along continuous straight runs less than gyroaxis 5.

In the present embodiment, channel bottom 11 is by constituting with tangent 2 tabular surface 11a and the 11b of revolution 5 lateral surface, and section shape slightly is V-shape.When gyroaxis 5 pressed down, groove 7 and the contacted part A of gyroaxis 5 outer peripheral faces, B absorbed the downforce of gyroaxis 5, and

tabular surface

11a and 11b have prevented the bending of gyroaxis 5.

Below describe and to divide copper 1 to be fixed in process on the gyroaxis 5.At first,, the gyroaxis 5 of vibrating motor 3 is injected grooves 7 as Fig. 1 a and shown in Figure 2, subsequently, again with about projection 9 direction riveteds to gyroaxis 5.

In the present embodiment, projection 9 thickness is more even, so the riveted projection can apply power uniformly to its integral body at 9 o'clock, thereby prevents the generation of local stress.Again since projection 9 medial surface 9b and lateral surface 9c bend to along the outer peripheral face 5a of gyroaxis 5 circular-arc, so when riveted, deformation quantity unnecessary on the projection 9 is with corresponding minimizing.Like this, the stress on the protruding 9 base portion 9d also is difficult to concentrate, thereby is difficult to take place crack performance on the base portion 9d, thereby has prevented the damage of projection 9.

Because projection 9 medial surface 9b and lateral surface 9c are spacing between circular-arc and the top 9a less than the diameter R of gyroaxis 5, so the distance between the medial surface 9b of projection 9 and the outer peripheral face 5a of gyroaxis 5 diminishes (being that gap S narrows down), thereby reduce the riveted amount on the projection 9.

Shown in Fig. 1 b, when protruding 9 riveteds after on the gyroaxis 5, shown in Fig. 1 b, the outer peripheral face 5a of gyroaxis 5 is pressed against on the medial surface 9b of projection 9, simultaneously, the tabular surface 11a of channel bottom 11 and regional A, the B of 11b withstand gyroaxis 5.Because channel bottom 11 is made of two

tabular surface

11a and 11b, so during with projection 9 and gyroaxis 5 riveteds, the outer peripheral face 5a of gyroaxis 5 is crimped on itself and

tabular surface

11a and 11b contacted 2 contact point A, the B, even so do not adopt bonding agent, also minute copper 1 firmly can be fixed on the gyroaxis 5, thereby reduce manufacturing cost.

Below by accompanying drawing other preferred embodiment of the present invention is described.In the following description, same as the previously described embodiments or similar part adopts same label to represent and omits description.

Fig. 7～11 show the second embodiment of the present invention, and it is substantially the same with first embodiment, and unique difference is that shown in Fig. 7～9, groove 7 does not run through the upper surface of whole minute copper 1 but extends to branch copper 1 upper face center place to be ended at once.But the technique effect of its realization is identical with first embodiment.

Figure 12～16 show the third embodiment of the present invention, it is substantially the same with first embodiment, and unique difference is, shown in Figure 12～14, the upper face center place that groove 7 not only extends to branch copper 1 ends at once, and the projection 9 of groove 7 tops is divided into several sections along the groove direction.The 3rd embodiment but also because of projection 9 segmentations on axis direction have alleviated branch copper 1 weight, thereby improves the vibration efficiency of vibrating motor 3 except obtaining the technique effect identical with first embodiment.

In the 4th embodiment, different with first embodiment, as shown in figure 17, the channel bottom 11 of groove 7 is by constituting with gyroaxis 5 outer peripheral face 5a contacted 3 tabular surface 11c, 1d and 11e.But the technique effect of the 4th embodiment is identical with first embodiment.

The present invention is not limited to above-mentioned several embodiment, also can do various changes in the scope that does not break away from its purport.For example, divide the shape of copper 1 to be not limited to semi-circular shape, also can make fan shape etc.Also have, in the above-described embodiments,, also can set the tabular surface more than 4 though set 2 or 3 tabular surfaces.

Divide the material of copper 1 to be not particularly limited in the foregoing description, but adopt generally that proportion is big, extensibility material preferably.Reasonable be adopt W-Ni-Fe W-Ni-Cu the tungsten alloy of series such as W-Mo-Ni-Fe.

The branch copper of the foregoing description is fixed on the complete vibrating motor of formation on the gyroaxis, and this vibrating motor has advantages such as sound construction, low cost of manufacture.

Claims

1. branch copper that is fixed on the vibrating motor gyroaxis, it is characterized in that, divide the copper upper surface to offer the groove that can insert gyroaxis, the groove both sides are provided with mutual face-off and thickness projection uniformly, and the medial surface of described projection and lateral surface bend to spacing between the top of projection of circular-arc and mutual face-off less than the diameter of the gyroaxis that injects groove along the outer peripheral face of the gyroaxis that injects groove.

2. minute copper as claimed in claim 1 is characterized in that, described channel bottom is made of a plurality of continuous tabular surfaces.

3. minute copper as claimed in claim 1 or 2 is characterized in that, described minute copper by W-Ni-Fe W-Ni-Cu the tungsten alloy of W-Mo-Ni-Fe series form.

4. a vibrating motor is characterized in that, comprises:

As claimed in claim 1 or 2 minute copper; And

Be fixed in the described minute gyroaxis in the copper groove.