KR20040027202A - Check valve structure for vacuum pump of alternator - Google Patents

Abstract

PURPOSE: A valve structure for a vacuum pump of an alternator with a vacuum pump is provided to form two or more contact parts different in shape, thereby maintaining a function of a valve even if one of the contact parts is damaged. CONSTITUTION: A valve for a vacuum pump in an alternator is formed of a valve body(310) having a bolt head(311), a valve side(320) installed inside the valve body, a compressed spring(330) for supporting the valve side, and a stopper(340) supporting a rear of the spring. The valve body has two or more contact surfaces, wherein each of the contact surfaces is formed of an inner sectional part(312) and a tapered part(313) starting from the inner sectional part. The valve side has two or more contact parts, wherein each of the contact parts is formed of a hemispheric contact part(322) to be contacted with the tapered part and a circular frame-shaped contact part formed protrusive on a circumference of the hemispheric contact part to be contacted with the inner sectional part.

Description

Valve structure for vacuum pump of alternator with vacuum pump {CHECK VALVE STRUCTURE FOR VACUUM PUMP OF ALTERNATOR}

The present invention relates to a valve structure for the vacuum pump of the alternator having a vacuum pump, and more particularly, to improve the valve side structure to have two or more contact parts to maintain the center as possible to perform a function as a valve without any foreign matter, It is characterized by preventing the penetration of the valve to prevent loss of its function as a valve even if some damage occurs and to prolong its service life.

In general, the alternator 10 in charge of power generation while driving the vehicle has a vacuum pump 20 as shown in Figure 1, depending on the model, the vacuum is used as a negative pressure for the brake at this time.

On the other hand, the check valve 30 is used in the vacuum pump 20 as described above, the conventional check valve configuration can be seen in Figure 2 or 3.

The check valve 100 of FIG. 2 is a conventional general valve, and is built in contact with the valve body 110 having the bolt head 111 and the tapered surface 112 therein, and has a hemispherical valve valve 120. ), A return spring 130 which is installed on the rear side of the valve side, and a stopper 140 for preventing the return of the return spring 130.

However, such a check valve 100 is characterized in that the hemispherical valve side 120 is in contact with the tapered surface 112, the tapered surface 112 is to be processed into an ellipse rather than a fine one when cutting. In this case, there is a drawback of the loss of function due to leakage, and on the other hand, even if a portion of the surface of the hemispherical valve valve 120 is worn or damaged, there is a disadvantage that also loses the function.

The check valve 200 of FIG. 3 is a valve known in recent years, the valve body 210 having a bolt head 211, a stepped portion 212 formed therein but not tapered, and the stepped portion 212. A valve side 220 having a double inner ring protrusion 221 and a foreign exchange protrusion 222, a return spring 230 which is installed on the rear of the valve side 220, and a return spring 230. It is made of a stopper 240 to prevent departure.

However, in such a check valve 200, although the area that is in close contact is good, there is a high possibility that some of the double inner ring projection 221 and the foreign exchange projections 222 are damaged or worn out, and when worn or damaged in this way, The disadvantage is that it immediately loses its function as a valve.

In addition, while the valve is in operation, it is preferable to operate with the center exactly maintained. However, since the conventional valve has no guiding part for maintaining the center, the valve may be partially shifted, which causes partial wear. Therefore, the life will be shortened.

Therefore, the present invention is to provide a valve of a new structure that adopts only the advantages of the above in view of the above-mentioned conventional problems, the main object of the invention is to configure the valve body and the valve valve newly, two or more different contact portions, respectively It is formed in a shape so that even if one part is damaged, the remaining part can continue to function as a valve, and at least one of the contacts is used to help maintain the center to further extend the life of the valve.

A characteristic configuration of the present invention for achieving the above object comprises a valve body having a bolt head, a valve side to be embedded therein, a compression spring for supporting the valve side, and a stopper for supporting the rear of the spring. In the valve, the valve body forms at least two contact surfaces which are not parallel to the center line of the shaft at its inner diameter, and the valve side is provided with two or more contact portions which are respectively contacted with the at least two contact surfaces separately. To make contact.

1 is a cross-sectional view of an alternator with a vacuum pump

Figure 2 is a cross-sectional view showing a conventional valve structure

Figure 3 is a cross-sectional view showing another conventional valve structure

Figure 4 is a cross-sectional view showing the valve structure of the present invention

Figure 5 is a cross-sectional view showing the structure of another embodiment of the present invention

Figure 6 is a cross-sectional view showing the structure of another embodiment of the present invention

<Code Description of Main Parts of Drawing>

300: check valve 301: contact surface

302: contact portion 310: valve body

311: bolt head 312: inner cross section

313: tapered portion 314: round corner

315: rear tapered portion 320: valve side

321: annular contact portion 322: hemispherical contact portion

323: center guide 324: cylindrical contact

325: dish type wing

330: compression spring 340: stopper

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, each configuration and operation of the embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, the valve for the vacuum pump of the alternator includes a valve body 310 having a bolt head 311, a valve side 320 to be embedded therein, and a compression spring 330 for supporting the valve side 320. And a stopper 340 that supports the rear of the spring.

In addition, the valve body 310 forms two or more contact surfaces 301 which are not parallel to the center line of the shaft at the inner diameter thereof, and the valve side 320 has two or more contact portions that respectively contact the two or more contact surfaces separately. It is important to have 302 to make multiple contacts.

Example 1

4 is a cross-sectional view of the valve 300 according to the first embodiment of the present invention, which is used by assembling the vacuum pump 20 integrally formed with the alternator 10.

The valve body 310 also has a bolt head 311, a valve side 320 to be embedded therein, a compression spring 330 for supporting the valve side 320, and a rear of the spring. The support is composed of a stopper 340.

At this time, the valve body 310 is formed with two or more contact surfaces 301, the inner end portion of the inner end portion 312 and the tapered portion 313 starting from the inner end portion, The valve side 320 forms two or more contact portions 302, and has a hemispherical contact portion 322, which will be in contact with the tapered portion 313, and a protruding portion formed around the annular edge portion 312 to be in contact with the inner end surface 312. It is formed by the contact portion 321.

When the valve 300 of the present invention is advanced by the force of the compression spring 330, the annular contact portion 321 and the inner end surface 312 of the valve side 320, and the hemispherical contact portion 322 and the tapered portion Each of the 313 contacts each other has a double contact surface.

In fact, it is preferable that the annular contact portion 321 and the inner end surface portion 312 contact first with a slight difference, and then the hemispherical contact portion 322 and the tapered portion 313 contact each other.

This is because if the hemispherical contact portion 322 and the tapered portion 313 are in contact first, the contact state between the annular contact portion 321 and the inner end surface 312 may be poor.

Example 2

5 is a cross-sectional view showing the configuration of the second embodiment, wherein the valve body 310 forms at least two contact surfaces 301, the inner end portion 312 and the inner end portion is started from the inner end portion thereof; It is formed by a relatively tapered taper 313.

The valve side 320 forms two or more contact portions 302, the cylindrical contact portion 324 which will be in contact with the inner circumferential surface of the tapered portion 313, and the center guide portion 323 formed at the end surface of the cylindrical contact portion. And it is formed to the annular contact portion 321 which is extended around the cylindrical contact portion 324 to be in contact with the inner end surface portion 312.

When the valve 300 of the present invention is advanced by the force of the compression spring 330, the round end of the annular contact portion 321, the inner end surface 312, and the cylindrical contact portion 322 of the valve side 320 is rounded. The inner portion of the portion and the tapered portion 313 are in contact with each other to have a double contact surface, and the center guide portion 323 formed at the end surface of the cylindrical contact portion 324 has a center of the valve side 320 itself as the center of the tapered portion. It works by guiding them to match as much as possible.

Example 3

5 is a cross-sectional view showing the configuration of Example 2;

The valve body 310 forms two or more contact surfaces 301, the inner end portion 312 and the rear taper portion 315 formed at a rearward at an arbitrary distance from the inner end portion at the inner end thereof. The inner diameter edge of the inner end surface portion 312 is formed by the round corner 314.

In addition, the valve side 320 is formed at least two contact portion 302, the annular contact portion 321 to be in contact with the inner end surface portion 312 and the plate to be in contact with the rear tapered portion 315 It is formed by the wing 325, in this case also forms a center guide portion 323 in the center cross section of the annular contact portion.

When the valve 300 of the present invention is advanced by the force of the compression spring 330, the annular contact portion 321 and the inner end surface 312 of the valve side 320 and the dish-shaped wing 325 and , The rear tapered portion 315 is in contact with each other to have a double contact surface, the center guide portion 323 formed on the end surface of the annular contact portion 321 is the center of the valve side 320 itself and the center of the tapered portion It works by guiding them to match as much as possible.

In addition, the rounded edge 314 not only guides the center guide 323 but also has an effect of softening the movement of air.

Valves of the present invention configured as described above may have a function even if any one of the contact state is lost because the valve side 320 is in multiple contact with the valve body 310.

For example, in the first embodiment, even if the primary contact state between the annular contact portion 321 and the inner end surface portion 312 becomes poor, since the hemispherical contact portion 322 is in contact with the tapered portion 313, its function can be continuously maintained. have.

In addition, even if the processing state of each of the tapered portions 313 and 315 in contact with the hemispherical contact portion 322, the cylindrical contact portion 324, and the dish-shaped wing portion 325 is incomplete, even if a minute gap occurs, Since the annular contact portion 321 is in contact at the same time it is also possible to maintain the function as a valve.

As described in detail above, the valve of the present invention newly constitutes the valve body and the valve side, and forms two or more contact surfaces and two or more contact portions to make multiple contacts, and is contacted at the correct position as possible because it has a center guide. If one part is slightly damaged, the other part will continue to function as a valve.

Therefore, unlike a conventional valve, even if a partial damage or a gap occurs due to wear, since the valve functions as it is, there is an advantage of extending the life of the vacuum pump.

Claims (3)

A valve body 310 having a bolt head 311, a valve side 320 to be embedded therein, a compression spring 330 for supporting the valve side 320, and a stopper for supporting the rear of the spring. In the valve for a vacuum pump of an alternator having a vacuum pump composed of 340, The valve body 310 forms two or more contact surfaces 301 which are not parallel to the center line of the shaft at the inner diameter thereof, The valve valve 320 has a valve structure for the vacuum pump of the alternator having a vacuum pump, characterized in that the two or more contact portions 302, which are in contact with the two or more contact surfaces, respectively, to be in multiple contact. . The method of claim 1, The contact surface of the valve body 310 is an alternator having a vacuum pump, characterized in that at least one of the contact surface 301 is not parallel to the center line of the shaft in its inner diameter, at least one of which is a tapered portion (313) Valve structure for vacuum pump The method of claim 1, The contact portion of the valve valve 320 is made of two or more contact portions 302, at least one of the contact with the taper portion 313 is conical or hemispherical, characterized in that the vacuum of the alternator having a vacuum pump, characterized in that Valve structure for pump.