JPS5810192A - Manufacture of rotor for air pump - Google Patents

Abstract

PURPOSE:To render manufacture and assembling of a rotor simple and reliable, by making the main body of a rotor by cutting an elongated pipe into a required length, and attaching a front cap and a rear cap to the opposite ends of the rotor body for supporting a vane shaft. CONSTITUTION:An elongated pipe 30 is formed at its central portion with a space 31 for incorporating therein a vane shaft and vanes. Further, three spaces 32 for incopporating therein vane supporting members are formed around the circumference of the pipe 30 in a unitary manner, such that they are communicated with the space 31. The pipe 30 is made of a material such as aluminum by way of drawing or extrusion process so that these spaces 31, 32 extend continuously in the axial direction of the pipe 30. The main body 6 of a rotor 5 is obtained by cutting the elongated pipe 30 into a proper length to meet with the required capacity of pump. By thus constituting the rotor 5 by a cylindrical, main body 6 and a front cap 7 and a rear cap 8 attached to the opposite ends of the main body 6, it is enabled to render manufacture and assembling of the pump simple and reliable.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a rake in which a base and a vane shaft are incorporated in a Payll air pump.

For example, secondary air supply system 1 is used to remove exhaust gas from automobiles, and fII is used to improve automobile engine output.
AII! ``Graning, Fishing, and Meat'' Superchargers, which have been developed in recent years, are used to drive automobile engines.
A vane lid air pump is used, and objective I above is achieved by supplying the air from this pump to the exhaust VG intake system. And, as an air pump with such a function,
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However, these conventional air pumps have problems in terms of productivity due to their complicated structure, complicated manufacturing and layering, and there is still a lot of room for improvement. There is. In particular, it is necessary to select the pump capacity according to the importance of the engine for which air pumps are used, and it is necessary to prepare various models individually.
There was a big problem with productivity, and the cost of manufacturing trenches increased.

For this reason, the present inventors reviewed the above-mentioned vane shoe pump in general and improved its performance.
In addition, in order to reduce manufacturing costs, we focused on the Korean motor into which the vane and vane shaft are incorporated.

In other words, in conventional air pumps, both lines and o
%, the rotor consists of a rotor body which has a substantially rounded cylindrical shape in which the rotor part and the rotor shaft part are integrally formed, and an end cap that is joined to the opening of the rotor body. Because it is cylindrical, its internal processing is artistic.
The drawback was that it was difficult to obtain that level of processing accuracy.

In addition, since the rotor shaft is designed as an integral part, a high-strength material is selected as the material, which increases the overall weight and is not desirable in terms of cost reduction.

In addition, in the conventional type of bottle, KLL material is prepared for each capacity required depending on the size of the automobile engine, resulting in poor productivity and increased manufacturing costs.

The present invention was made in consideration of these circumstances, and it is possible to create a long pipe that can be easily formed by extrusion or drawing.
The rotor body is formed by cutting it at nine lengths according to the required capacity, and the vane shaft is supported at both ends of the rotor body.
The simple method of forming the seater by attaching the front cap and rear cap makes it possible to manufacture and assemble the rotor easily and reliably, and the internal machining of the rotor body is also simple. In response to changes in capacitance due to size, it is possible to reduce current by simply changing the length of the wire to be cut, which can greatly improve productivity and significantly reduce manufacturing costs. The present invention provides a method for manufacturing a rotor for a nib pump.

Hereinafter, the present invention will be explained in detail using examples shown in the drawings.

Figures 1 and 2 are from the original 1jl! FIG. 2 is a vertical cross-sectional view and a cross-sectional view taken along the line I-1, showing an embodiment of an air pump employing the rotor manufacturing method according to the present invention.

In these figures, first, the schematic structure of the air pump will be briefly explained.
a, suction side, and discharge side spaces 1b.

The pump housing is made up of a substantially cylindrical housing body, and a front cover S and a rear cover 4 that are joined to both ends of the housing body.

S is a rotor that characterizes the present invention, and is composed of a rotor body 6 formed in a cylindrical shape, a fan throat cap 1 and a rear cap head attached to both ends of the rotor body, and three vanes S and a rotor that rotates these. It is disposed in the rotor storage space 1a of the housing 1 with a freely supported pen shaft 10 incorporated therein. In addition, during the period 11 and 12
The rotor body and both caps 1.・The gasket inserted between the two caps 7 and 13, the bolt for fixing Ill to the four-way zero body @Kml, and 14 the bearing 1
It is a vane holder that supports each vane on the vane shaft 16 via a s, and a vane holder is formed along the axial direction at three locations on the outer periphery of the quaternary main body to allow the vanes to move in and out. The slit 1T is a vane support member that supports the plate 79 from both sides inside the slit, and 1F is a wavy plate spring that elastically supports one side of the vane support member 1T. Further, the front cap 7 is integrally formed with a rotor shaft 1a that extends outward, and a shaft hole $1 is bored in the center of the rear cap.

The rotor 5 having such a structure is pivotally supported by the front cover 3 and the rear cover 4 that constitute the housing 1 at a position eccentrically upward from the axis of the rotor storage cavity 1a, while the vane shaft 10 is supported at a position eccentric from the bird's center of the rotor storage space 11, that is, from the axis of the p-tor S. That is, the front cap T of the rotor 5 has its p-tashaft T &
- It is pivotally supported by the front cover 3 of the housing 1 via a bearing 11, and the shaft hole $a of the rear cap l is pivotally supported by the boss portion 4aK of the rear cap 4 by the bearing 10. One end of the vane shaft 10 is supported within the front cap T via a hanger 10&, and is rotatable relative to the vane shaft 10 by a bearing 21. Further, one end of the vane shaft 1o is connected to a part of the boss portion 4a of the jacket 4 by a key 12, and is fixed to a pole 23. .

In the figure, 24 is a pulley that receives rotational transmission from the automobile's machinery and V-belt force.
It is supported on the top via a well-known electromagnetic clutch 2s, and is selectively connected to a Ta company pulley 24 by the action of this electromagnetic clutch 2I. The housing 1
The rear cover 4 includes the intake space lb and the discharge side space lb,
A charging port 2 and a discharge port (not shown) are formed which communicate with 1c, respectively.

In the configuration as shown above, when the rotor 5 rotates, the base 71 on the vane shirt 10 rotates by Km, thereby advancing and retreating from the slit 1 on the outer circumference of the rotor S into the rotor storage space 1a. As a result, the air guided from the suction rotor into the machine side space 1b passes through the passage formed by the outer periphery of the rotor 1 and the quarter storage space 1a, and then flows to the discharge side. It is sent out from the discharge port via the space 1C.

According to the present invention, conventionally, the main body is formed by forging or the like and has a substantially rounded cylindrical shape and integrally includes a rotor shaft, and an end cap that closes one opening of the main body. The cylindrical main body 1 is formed by cutting a long pipe to the desired length, which has been a problem in terms of construction, productivity, and manufacturing costs. , a front cap T and a rear cap attached to both ends thereof, and the manufacturing of each part,
It is easy and reliable to assemble, and can easily accommodate changes in capacity due to the size of automobile engines, greatly improving productivity and reducing manufacturing costs. It has characteristics in that way.

The manufacturing method of the rotor 5 will be described in detail using the construction drawing shown in FIG. 3. FIG. As is clear from the enlarged cross-sectional shape of this long pipe 3, line 411, the vane and vane shaft storage space s1 is connected to the t-hole in the center, and the circumferential direction is It integrally has vane support member loading spaces 31 at three locations, and these spaces $1. It is a round piece made by extrusion or pultrusion of Al2 material etc. so that the $2 is continuous in the length direction. fk is a sea-shaped hole in the figure to reduce weight.

Then, the controller main body 6 holds the above-mentioned nine long vibrators 3@,
The desired length KIJIF and K is formed according to the pump capacity determined by the size of the automobile engine. Therefore, according to this bottle method, the rotor body 6 can be formed more easily and reliably than in the conventional case where the rotor body 6 is formed one by one by forging, etc., and productivity is greatly improved. , it becomes possible to reduce the manufacturing cost. Furthermore, since the rotor body 6 is formed by cutting the long pipe SO to a desired length as described above, the capacity can be adjusted according to the size of the automobile engine by simply changing the length of the cut. This makes it possible to obtain a rotor body opening with The advantage is that it can be done. At this time, No.
Needless to say, we prepare turtles with different lengths in the -II direction for different types of Uzing 1.

Further, the rotor main body 6 cut in the above-described manner is subjected to post-processing as shown in FIG. 3(6)K. The details are shown in FIGS. 5 to 8, and to briefly explain this, first, the four-way main body 6 as a material shown in No. 41Q is placed around the inner circumference of the vane and vane shaft storage 9 connection s1. The outer periphery and both ends are cut using the three points P of the part as a reference. At this time, Iku Maeda is shown in Figures 5 and 6 (
As is clear from 4), the concave portion 3 is formed with the outer periphery of 1
3 was formed and the rear end of the platform was formed (in Figures 5 and 6).
As is clear from the figure, a protrusion 34 is formed by cutting out one inner circumferential portion and forming a three-value arc-shaped portion 34m surrounding the vane/vane shaft storage space 31. and,
At the front and rear end portions formed in this way, there are holes F for attaching the front cap T and rear cap L.
Screw holes Ss for IS are bored in each direction.

In addition, the vane support member loading space 12 of the rotor main body S
As is clear from Fig. 6 (4) (b), post-processing such as 1 broaching has been applied to K, and as shown in 711, the groove 3 in which the 1 leaf spring 1 is attached is also formed integrally. be done. In this case, since both ends of the rotor body 6 are open, it is easy to see that such a machining operation IIl can be performed easily and reliably. Corresponding to the vane support member loading space 82, on the outer periphery of the main body 6, as shown in Figures 5 to 8, from the rear end to the part K close to the front end, Slits (II) for vane entry and exit are formed, and each part is finished to complete the rotor body.

Then, as mentioned above, the main body of the low door was subjected to post-processing.
In contrast, as shown in No. 311 (@) K, the front cap T and rear cap 8 prepared in advance are attached to the gasket) 1
1.12 and fixed with bolts 13, the rotor 5 as shown in No. 311@ is assembled.

, the cap 1 is the 9th all (6) (
2) As shown in the figure, there is a groove inserted into the recessed part 33 of the front end of the lower door main body 6, which is formed by forging or the like so as to close this part, and a groove is formed on the outside thereof. 7m are assembled together.

A screw hole 3T is drilled corresponding to the screw hole 85 of the rotor body, and a shaft hole 31 is formed in the center of the inner surface to support one end 1OA of the shaft 10 with a bearing 21. ing.

In addition, one rear cap company, Figure 10 (6) (6) K
As shown, the rotor has a shaft hole in its center that is pivotally supported by the rotor, and is made of cast metal or the like so as to be attached to the rear end of the rotor body. An annular groove 3s is formed on the inner surface of the p-door body to fit and hold three arcuate portions 34m protruding from the p-door body, and a screw of the p-door body is formed on the outer periphery of the p-door body. A screw hole 40 is bored corresponding to the hole 35.

1. When assembling such a rotor 5, it should be noted that the rear end side of the four-door main body 6 is divided into three parts by three slits 16, and these parts are joined using the rear middle bracket. and fix it. However, it is not necessarily necessary to have a structure in which the rotor main body is projected and fitted into the cap 3 side, and the two may be joined with flat ends and fixed together. This means that even if the relationship KsP between the rotor main body opening and the front cap T is rt4m.

Additionally, the vane and vane shirt 10 incorporated into the rotor S are installed when the rear cap 8 is removed when assembling the Nouji Puffer 1 or the like.

In the above embodiment, in order to support the vane S on the vane shaft 11m, a vane holder 14 is used as shown in FIG. 1, and this is formed for each model. If a substantially U-shaped vane holder 14 as shown in FIG. 11 is used and its assembly position is changed, it can be made common, which has a great advantage.

As explained above, according to the method for manufacturing a rotor in an air pump according to the present invention, a long pipe that can be easily formed by extrusion or drawing is cut into a desired length, thereby forming a rotor body. After that, we decided to manufacture the rotor by attaching a front cap and a rear cap to both ends of the rotor, so the rotor was formed into a roughly cylindrical shape by forging as in the past. Productivity can be significantly improved. In particular, changing the pump capacity depending on the size of the car engine can be handled by simply adjusting the cutting length of the long knob 5, improving air pump productivity and reducing manufacturing costs. Well, the effect is great. Further, according to the present invention, since the rotor body has a shape that is open at both ends and has the same shape in the length direction, internal processing etc. can be performed more easily and reliably than in the past. It is easy to manufacture and assemble, and has various advantages such as the rotor body can be made of bulky and inexpensive materials because the parts that are pivotally supported by the housing and require high strength are separate parts. It has a positive effect.

1. Rotor OI in air pump related to zero firing fiK
The I manufacturing method is not limited to the three-vane type air pump shown in the above-mentioned embodiment, but can also be applied to the two-vane type. Various options are possible, such as a secondary air supply system and a supercharger.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view showing a schematic configuration of an air pump in which the method of manufacturing a rotor according to the present invention is implemented, and Fig. 2 is a longitudinal cross-sectional view showing the schematic configuration of an air pump in which the method of manufacturing a rotor according to the present invention is implemented, and Fig. 2 is a line i-i.
mwirw diagram, Figure 3 is a manufacturing process diagram of the rotor that characterizes the present invention, Figure 4 is a rough cut diagram of the long pipe that forms the four-door main body, and Figure 5 is a diagram showing post-processing. An enlarged longitudinal sectional view of the rotor body, Figure 6 (2) (2) is its front end view and rear end view, Figure 7 is a partially enlarged view of the rotor body;
Figure 8 is the same bottom view of the rotor body, Figure 9 (6) (to)) is the IIIWt side view and normal view of the front cap, Figure 10 (4) -) is the cable cutaway view of the carrier cap, and The background diagram, FIG. 11, is an explanatory diagram illustrating another example meeting. 1...e-housing, S...fist/rotor, SΦ...
4-door main body, 1.・Front cap, 7a...
・Rotor shaft, 8-...Rear cap, ・a...
...Shaft hole, 1...P-y, 10...Vanesha 7), Is...Bolt, 14...Vane holder, 16...Slit, 1T...Vane support Part 1
,1@・1・Leaf spring, 30...φ long length, 31
... Vane, Vane shirt) [Storage space, 32...
- Vane support member loading space. Patent applicant: Automobile Equipment Co., Ltd. Agent: Masaki Yamakawa (and one other person) Figure 8 Figure 9 Figure 11

Claims (1)

[Claims] Vane, Vane shirt) Accommodation: 111 m empty [Shiyo and Vane support II Then, the data body is formed by twisting the rake body, and then the vane and vane shut are placed inside the rake body, and the tool cap and rear cap are attached and fixed to both ends of the rake body. Air pump K＞
Keru p-ta 1) @ Zōkata Tetsu.