JPS5810191A - Manufacture of housing for air pump - Google Patents

Abstract

PURPOSE:To increase the productivity of a housing for an air pump to a great extent, by making the main body of a housing by cutting a deformed, elongated pipe into a proper length, and attaching a front cover and a rear cover to the opposite ends of the main body of the housing. CONSTITUTION:A housing of an air pump is constituted by a main body 2 and a front cover 3 and a rear cover 4 attached to the opposite ends of the main body 2 of the housing. A deformed, elongated pipe for constituting the main body 2 of the housing is formed with a rotor incorporating space 5 at its central portion and a suction and a discharge spaces 10, 11 at the opposite end porions, and it is obtained by drawing or extruding a material such as aluminum. Thus, since the main body 2 of the housing can be obtained simply by cutting an elongated pipe into a proper length, productivity of the main body 2 of the housing can be increased to a great extent.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a housing for housing a J+P- and -I pipe in a vane-equipped air pump.

For example, secondary air supply systems used to purify automobile exhaust gas, and superchargers, which have been developed in recent years to improve automobile output and fuel efficiency, are widely used. A vane air pump is used which uses the automatic heavy-duty engine as a driving source, and the above objectives are achieved by supplying air from this pump to the air intake system of the engine. And, with this function as a fair pump, we published the QJI-kai No. 1987-8287 newsletter, the Special Public J1B51-1G125 newsletter, and the 41st-Kai No. 1982-98.
41, Japanese Unexamined Patent Publication No. 1180/1983, and U.S. Patent No. 13,356,292.

However, these conventional air pumps have complicated structures, are troublesome to manufacture and assemble, and have problems in terms of productivity, so they remain open to criticism. In particular, with such an air pump, it is necessary to select the pump capacity according to the size of the target engine.Inevitably, various models must be prepared separately, which poses problems in terms of productivity. Therefore, the present inventors reviewed the above-mentioned vane shoe 74 knob in general, and improved the productivity.
In order to reduce manufacturing costs, we focused on a pump hausing that has a rotor storage space, a suction side, and a discharge side.

In other words, in the conventional air pump KTo, fLO
Also, the pump is connected to a housing main body which is approximately in the shape of a bottom and is made up of an integral part that supports the a-tater and an outer part that surrounds the outer part.

70-Lo part Kl1 and 1fL housing copper and 1
Particularly when the main body of Hawajinda is in the A-Yu station storage space and the suction side,
Since the casting is located in the forming field as a cylindrical shape with *S having IIK between the discharge 111!
or To), manufacturing and assembly are done on the drawing side, #! -Rurita is lacking in sex. t, as the timber wall 4a-tasha 7) [
-a 11t%Km with high strength due to the need for real pivot support
Therefore, the weight of the metal body increases, and it is not desirable in terms of cost. And, such conventional ones are automobile O engine O Dai II! The problem of low productivity and increased manufacturing costs was a frequent problem because casting machines had to be prepared according to the required ↓ capacity.

The present invention was made in consideration of the circumstances, and it is possible to form a main body pipe by cutting an irregularly shaped long pipe that can be easily formed by extrusion or drawing into a desired length according to the required capacity. , Attach the front cover and rear cover tubes that support the rotor at both ends.
Forming the wading makes it possible to manufacture and assemble the wading simply and reliably, and the internal machining of the wading body is also simple. is the cutting length −f
! Not only can you deal with this by simply changing the production line, but you can also significantly improve the production capacity and reduce the manufacturing cost.
To provide a method for manufacturing hawasing in an air pump, which makes it possible to reduce hazing in an air pump.

Hereinafter, the present invention will be explained in detail using an actual example shown in the drawings.

#11 and Figure 2 are Hawajinda O11 according to the present invention.
This is a vertical sectional view showing the schematic structure of an actual air pump.

First, to briefly explain the air pump configuration of these IIKsP, the one indicated by the symbol 1 is the one from this invention.
It is composed of a cylindrical body 2, a cover 3 and a rear cover 4, which are joined to both ends of the main body 2 with a marking stone bomb. In the central rotor storage space S formed in this housing 1,
Three O-vanes and a vane shaft T that rotatably supports these vanes 6, a built-in trt, and a cylindrical shape a.
- The rotor I is placed *@f'L, this rotor 8 is placed between the front cover 3 and the UQ side cover 4.
There is one shaft support at a position K (Il center) above from the shaft center.

And the vane shaft T is the center! It is eccentric from the axis of the rotor 5, that is, the motive force of the rotor 8, and is supported at a good position. Therefore, in this state II, when the rotor 8 rotates, the vanes I on the vane shaft γ rotate together, and as a result, move back and forth from the slit portion outside the rotor to perform a pumping action.

On both sides of the housing body 2, there are a suction 9a, an air passage 10, and a discharge *! which communicate with the rotor storage space 5. !
Between 11 and 1.1 is integrally formed between these 1o and 1.1.
are a suction port 12 and a discharge port 1 formed on the rear cover 4.
3 (see FIG. 7(A)) are connected to each other.

Further, a rotor shaft 15 provided at one end of the rotor 8 and protruding outward from the front cover S via a bearing 14 includes a well-known electromagnetic clutch portion 16'. A pulley 17 is provided which receives the p-rotation transmission from an automobile engine, a V-belt, etc., through the n1 electromagnetic clutch section 16.
Accordingly, the rotor shaft 15 and the pulley 1γ are selectively connected.

In addition, in this actual example, the rotor 8#'i, similar to the nozzle 1, has a substantially cylindrical rotor body $a, and a front middle cap 8b and a rear cap 8o that are joined to both ends of the rotor body $a. It has a unique structure and is manufactured from n%. The rotor shaft 1 is connected to the front cap 8.
- According to the method such as ζO, which is formed integrally with the housing body 2, it can be simply molded, and the independence can be greatly improved, compared to the conventional case where it is formed as a Kl I think it's possible to improve. -'t, as mentioned above, connect the housing body 2 to the long pipe 2.
Since it is formed by cutting in 1, ζ1) @
Cutting length 1! It is possible to obtain a specific capacity according to the car engine size 111 by simply changing the size of the stone 9. This makes it possible to prepare castings for different models such as the conventional type. Compared to the case of Confucian EII, it has excellent soil volume and can greatly reduce development costs.

And, as mentioned above, the main body of Hawa Jinda is cut off! 11311 (1) and gs＊■ (to). In other words, as is clear from these m, the cut end face, the outer part of the hinge with equal pipe finishing, and Drill the screw holes 2sa for the goose par 4 and 011 matching bolts 23 appropriately, and then
- In the evening storage space 2nd class OPi image finishing is performed, 24.21 in the figure is an inclined surface provided in the suction side and discharge side space 10.11 to prevent the entrapment phenomenon by the Hiro vane 6,
A blower type air pump is not necessarily required.

And, the a-Yu storage of Hawajinda main body 2 which has undergone post-processing in this way! In contrast to the space 5, as shown in Fig. 1IIis, a front cover 3 and a rear cover 4Vk, which pivotally support the rotor 18 with the rotor 8 prepared in advance and with the openings at both ends closed, are installed: installation,
Assemble the housing 1t as shown in Figure (B) K.

In the case of ζ, the rotor 8 is constructed in the same way as the housing body 2: a rotor body $a formed by extrusion or pultrusion molding and appropriately cutting a long-hole pipe; Rear cap 8
In March, the O-vane 6 and its vane shaft 1 etc. were assembled and prepared in good condition.

In addition, as shown in Figure 6 (4) (to), the front cover 3 has approximately the same shape as covering the front part of the main body 20 of the above-mentioned 9-jing, and has an aluminum (1-type design such as die-casting). Then, the corresponding screw hole 2@-111II is installed in the 1IIr'rMK screw hole 11aK of the main body 2, and the 7-nt cap Ik tube bearing 14t of the rotor is inserted in the center of the hole 2@-111II. Pivot support hinge - port 2
There is a T-formation field. In addition, it is now integrally formed with Yap 8-1! The rotor shaft 1s projects outward from the opening 2T, and a pulley IT for receiving a rotation transmission pipe from the engine is attached to the ζ0 portion via an electromagnetic shaft 10 (see Hirakaku).

4fp bar 4 is happy 7E @) 俤) K shown f
For this purpose, similar to the 711 head cover 4, the housing body 2 is built in the IIIW shape and is made of cast metal, etc.
It has a 9 space 2@, 21 corresponding to 11.11, and a suction port 12 and a discharge port 1s that communicate with this and open on the outer surface. Further, a boss portion 31 formed in an annular shape 1p130 is provided at the center of the inner surface of the rear cover 4, and the support cap 8C of the rotor 8 is pivotally supported by this boss portion 31 via a bearing n. In addition, this boss portion 31
A hole 33 into which one end of the vane shaft T incorporated in the rotor 8 is fitted is bored at the eccentric position of the rotor 8,
The vane shaft 7 is fixed to the rear cover 4 through a center hole 34 within the hole 33 and is prevented from being removed from the outside with a bolt 35. Of course, this rear cover 4 also has screw holes 3 corresponding to the screw holes 23aK of the housing main body 211.
According to this embodiment, when the front cover 3$P and the rear cover 41 as described above are attached to the housing body 2, the concentricity between these members is In order to maintain the stability, some of the screw holes 2@, 36 of the covers 3, 4111 corresponding to the screw holes 23aK drilled in the reinforcing lips 21, 22 of the no-waging main body 2 are elongated upward and downward. formed as,
**It is configured to be possible.

However, such an adjustment can be made on either the upper or lower lip 21 or 22, and as shown in Figure 8, the lower lip 22110 can be adjusted and identified using the percentage fixing pole 23. It goes without saying that the bolt for the upper lip 2111 may be omitted.

According to the housing 1 manufactured as described above, the suction side space 10 and the discharge side space 11 which fit into the suction port 12 and the discharge port 13 are 111 in va-1@ and g-g. -y@011k9 space extending along the k11 direction, space Nl extends only halfway along the vane 6 as in the conventional case.
, 11 exists, compared to the case where 9 qi flows K
Either the deflection force on the vane 6 due to the 5WII of the vane 1 is small, or the force in the thrust direction of the rotor is small, and the rotor 8t is supported securely. It is possible to perform a smooth pumping action.

As described above, according to the method for manufacturing hawasing O in an air pump according to the present invention, an irregularly shaped long pipe that can be easily formed by extrusion and drawing
Long tmKI! The housing main body was formed by cutting the J, and then the OmK7 interlock cover and rear cover pipe were attached to it, so the housing body was formed into a generally cylindrical shape with a bottom as a conventional casting.
Compared to the nine cases, the sense of initiative can be greatly improved. In particular, changes in pump capacity due to the size of the car's engine can be dealt with simply by adjusting the cutting length of the long pipe, improving the flexibility of the air pump and reducing manufacturing costs. In terms of achieving this goal, it has a major effect in 1. Moreover, according to this method, even if the models are different, the outer diameter dimensions are the same, so the cover side only needs to be made of the same material, and it is possible to use a common bracket for installation on cars. There is fertility. According to the present invention, the housing main body has a shape that is open at both ends and has an opening in the direction IIb@direction K11l, so the internal processing can be carried out more easily and reliably than in the past. K-no-
9. Easy to manufacture and assemble 6.1. Since the part that requires high strength *'t* is required to support the shaft in a rough manner, there are various excellent effects such as the ability to form the body of the housing with a material that is thick and inexpensive. .

In addition, the method of preparing the Kuzinda that will be used in the mooring stone air pump during the main shift t14 is as described above and shown in the following gA compression ratio.
This air pump can be used for various purposes such as secondary air storage equipment for exhaust gas purification and superchargers.

[Brief explanation of the drawing]

lIlml is a forging drawing that shows the schematic configuration of an air pump that is a solid line of the l14 manufacturing method of Hewajinda related to the main job.
Mine 01 - [Jodan Picture Garden, 3rd Pavilion is the main building] Hawajinda @ Exhibition Construction @ Figure 114 is an enlarged section of the irregularly shaped long pipe that forms the main body of Hakujinda III% vote sE member (7 )
is a post-processed ^9 engine body 0*m drawing and longitudinal cross-sectional view, Iris 6th edition (2) (to) is ant warehouse part ozwm death and 11th cross section, 7th cabinet member (to) Fi replacement Airpon 1o1111 to explain another reduction example of Ya City Par's 辂爾S) and vertical cross-sectional view, Ki 8 Garden is a book? m111”rsJ,
* Singing...＾wajin/, 2-...hawashinta body%*----70 nt cover, 4...rear☆bar,
SΦ...Rotor storage space, 6...Vane, T...lI@vane shaft, 811@...Rotor, 1G...Suction force 9
Between, 11...・Discharge side space, 12...・Suction port, 13...・Discharge port, 20...・True shape long bi 1° Patent applicant Automotive Equipment Co., Ltd. Agent Masaki Yamakawa (and 1 other person) No. 4 Figure 515 ICI F

Claims (1)

[Claims] op* delivery! It communicates between the space and the suction and discharge ports! By extruding or pultruding a spiral-shaped long pipe having an integral housing, a housing body is formed by extruding or pultruding the long pipe, and then the rotor is housed in the housing body. Low prepared in advance in the space! Along with loading this low! 10. A method of manufacturing a housing for an air pump, comprising: a front cover for pivotally supporting a front cover;