JP6428308B2 - Compressor - Google Patents

Description

  The present invention relates to a compressor.

  For example, as disclosed in Patent Document 1, a cylindrical mounting leg protrudes from the compressor housing. Then, the fastening bolt inserted through the mounting leg is screwed into the engine mounting portion (target to be mounted), whereby the mounting leg is fastened to the engine mounting portion and the compressor is mounted to the engine mounting portion.

JP 2006-170162 A

  By the way, the 1st housing structure and 2nd housing structure which comprise a housing are connected with the several housing volt | bolt. Here, the mounting position of the mounting legs is determined in advance depending on the design restrictions of the compressor, the mounting space of the compressor, etc., and the position of the engine mounting portion overlaps the housing bolt in the axial direction of the housing bolt. May end up. In this case, first, the first housing component and the second housing component are connected by the housing bolt, and then the bush or the like is press-fitted and fixed to the mounting leg at a position overlapping the housing bolt in the axial direction of the housing bolt. The interposition member is interposed between the mounting leg and the mounting portion of the engine. Then, in a state where the interposition member and the attachment portion of the engine are in contact with each other, the fastening bolt is inserted into the attachment leg and the interposition member and screwed into the attachment portion of the engine, so that the attachment leg is inserted into the engine via the interposition member. Fasten to the mounting part. However, the number of parts increases by the amount of the interposition member, and an operation for press-fitting the interposition member to the mounting leg is required, so that the assembling workability is deteriorated.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a compressor capable of suppressing an increase in the number of parts and improving assembly workability.

  A compressor that solves the above problems includes a housing, a cylindrical mounting leg that protrudes from the housing, and an insertion hole that is formed in the extending direction of the mounting leg and through which a fastening bolt can be inserted. The housing is fixed to a mounting object using the fastening bolt, and the housing includes a first housing structure and a second housing structure, and the first housing structure and the second housing. The structural body is a compressor connected by a housing bolt, and the mounting leg is formed with an insertion portion through which the housing bolt can be inserted in a protruding direction of the mounting leg. When the fastening bolt is inserted through the insertion hole, the fastening bolt is disposed so as to be blocked by the fastening bolt.

  According to this, the housing bolt can be inserted into the insertion portion, and the first housing component and the second housing component can be connected by the housing bolt. Therefore, the mounting leg can be extended to a position overlapping with the housing bolt in the axial direction of the housing bolt. Therefore, as in the prior art, the mounting object overlaps with the housing bolt in the axial direction of the housing bolt, so the mounting leg is press-fitted and fixed at a position overlapping with the housing bolt in the axial direction of the housing bolt. It is avoided that the interposition member has to be interposed between the mounting leg and the mounting target. As a result, it is possible to suppress the increase in the number of parts and improve the assembly workability.

  In the compressor, the head of the housing bolt is preferably arranged closer to the housing than the fastening bolt. According to this, the falling from the insertion part in the housing bolt can be suppressed by the fastening bolt.

  According to this invention, it is possible to suppress an increase in the number of parts and improve the assembly workability.

A side sectional view showing a compressor in an embodiment. The disassembled perspective view which shows the periphery of the attachment leg in a compressor, the attachment part of an engine, a fastening bolt, and a housing bolt. The rear view of a compressor. The rear view which shows the state by which the attachment leg is fastened by the attachment part of an engine with the fastening bolt.

Hereinafter, an embodiment in which the compressor is embodied as a scroll compressor will be described with reference to FIGS. The scroll compressor is used for a vehicle air conditioner.
As shown in FIG. 1, the housing 11 of the scroll compressor 10 is connected to one end of a center housing 12 (shell) as a first housing constituent body having a bottomed cylindrical shape, and a covered cylindrical front housing 13 is connected thereto. At the same time, a rear housing 14 is connected to the other end of the center housing 12 as a second housing constituent body having a covered cylindrical shape.

  The front housing 13, the center housing 12, and the rear housing 14 are fastened together by screwing a plurality (four in this embodiment) of housing bolts B1 through the rear housing 14 and the center housing 12 into the front housing 13. Yes. Further, the center housing 12 and the rear housing 14 are connected by a plurality (three in this embodiment) of housing bolts B2 passing through the rear housing 14 and screwed into the center housing 12.

  The center housing 12 is open to the front housing 13 side, and a fixed scroll 15 is integrally formed therein. A movable scroll 16 is accommodated in the center housing 12. A compression chamber 17 is defined between the fixed scroll 15 and the movable scroll 16.

  A rotating shaft 18 is rotatably supported on the front housing 13 via a radial bearing 19. An eccentric shaft 20 that protrudes toward the movable scroll 16 from a position eccentric with respect to the rotational axis L of the rotary shaft 18 is integrally formed on the end surface of the rotary shaft 18 on the movable scroll 16 side. A bush 22 with an integrated balance weight 21 is fitted to the eccentric shaft 20. The movable scroll 16 is supported by the bush 22 via the bearing 23 so as to be rotatable relative to the bush 22. When the rotating shaft 18 rotates, the movable scroll 16 revolves through the eccentric shaft 20, the bush 22 and the bearing 23, the volume of the compression chamber 17 decreases, and the refrigerant is compressed.

  As shown in FIGS. 2 and 3, a square cylindrical mounting leg 30 projects from the bottom wall of the rear housing 14. The housing 11 is fixed to a mounting portion 41 of an engine to be mounted using fastening bolts 40 inserted through the mounting legs 30. The attachment portion 41 is formed with a female screw hole 41a into which the fastening bolt 40 is screwed.

  The mounting leg 30 has a first contact wall 31 having a first contact surface 31a that contacts the head 40a of the fastening bolt 40 and a second contact surface 32a having a second contact surface 32a that contacts the mounting portion 41 of the engine. And a contact wall 32. The first contact surface 31a and the second contact surface 32a are flat surfaces extending in a direction orthogonal to the axial direction of the mounting leg 30 and parallel to each other.

  An end surface 30e of the mounting leg 30 opposite to the bottom wall of the rear housing 14 is formed into a flat surface. Further, the end surface 30 e of the mounting leg 30 is formed with a thinned portion 33 that is recessed toward the bottom wall of the rear housing 14. The lightening portion 33 has a rectangular shape in plan view extending along the axial direction of the mounting leg 30, and is formed between the first contact wall 31 and the second contact wall 32 in the axial direction of the mounting leg 30. ing. In the first contact wall 31, a circular insertion hole 31 h into which the shaft portion 40 b of the fastening bolt 40 is inserted is formed in the extending direction of the mounting leg 30 (the axial direction of the mounting leg 30). One end of the insertion hole 31 h opens to the first abutting surface 31 a and the other end opens into the lightening portion 33.

  The second abutting wall 32 is formed with a circular hole-shaped insertion portion 34 through which one mounting bolt 30 can be inserted in the protruding direction of the mounting leg 30 among the plurality of housing bolts B1 and B2. Here, the protruding direction of the mounting leg 30 is a direction orthogonal to the outer surface of the bottom wall of the rear housing 14. That is, the insertion portion 34 is formed so as to be orthogonal to the axial direction of the mounting leg 30 and extend toward the center housing 12. In the insertion part 34, it has the seat surface 34a on which the head B3 of housing bolt B2 sits.

  The second abutment wall 32 has a circular insertion hole 321h having one end opened in the thinned portion 33 and the other end opened in the insertion portion 34, and one end opened in the insertion portion 34 and the other end. Is formed in the extending direction of the mounting leg 30 with a circular insertion hole 322h opening in the second contact surface 32a. The shaft portion 40b of the fastening bolt 40 is inserted through the insertion holes 321h and 322h. Accordingly, the insertion holes 31 h, 321 h and 322 h are arranged at positions overlapping in the axial direction of the mounting leg 30.

  As shown in FIG. 4, when the head portion B3 of the housing bolt B2 is seated on the seat surface 34a, the head portion B3 of the housing bolt B2 is more than the insertion holes 31h, 321h, and 322h in the axial direction of the housing bolt B2. Located near the rear housing 14. The housing bolt B <b> 2 inserted through the insertion portion 34 is disposed at a position overlapping the fastening bolt 40 in the axial direction of the housing bolt B <b> 2 within the insertion portion 34. That is, the insertion portion 34 is arranged so that the fastening bolt 40 is closed by the fastening bolt 40 when the fastening bolt 40 is inserted into the insertion holes 31h, 321h, 322h. Is also arranged near the rear housing 14.

Next, the operation of this embodiment will be described.
The center housing 12 and the rear housing 14 are connected by housing bolts B1 and B2. At this time, among the plurality of housing bolts B1 and B2, one housing bolt B2 is inserted into the insertion portion 34, penetrates the rear housing 14, and is screwed into the center housing 12. The head B3 of the housing bolt B2 inserted through the insertion portion 34 is located closer to the rear housing 14 than the insertion holes 31h, 321h, 322h in the axial direction of the housing bolt B2. Then, with the mounting portion 41 of the engine and the second contact surface 32a in contact with each other, the shaft portion 40b of the fastening bolt 40 is moved until the head portion 40a of the fastening bolt 40 contacts the first contact surface 31a. And screwed into the female screw hole 41a of the mounting portion 41. Then, the mounting leg 30 is fastened to the mounting part 41 of the engine by the fastening bolt 40.

In the above embodiment, the following effects can be obtained.
(1) An insertion portion 34 into which the housing bolt B <b> 2 can be inserted is formed in the mounting leg 30 in the protruding direction of the mounting leg 30. The insertion portion 34 is arranged so that the fastening bolt 40 is blocked by the fastening bolt 40 when the fastening bolt 40 is inserted through the insertion holes 31h, 321h, and 322h. According to this, the housing bolt B2 can be inserted through the insertion portion 34, and the center housing 12 and the rear housing 14 can be connected by the housing bolt B2. Therefore, it is possible to extend the mounting leg 30 to a position overlapping the housing bolt B2 in the axial direction of the housing bolt B2. Therefore, as in the prior art, the engine mounting portion 41 overlaps the housing bolt B2 in the axial direction of the housing bolt B2, so that the engine mounting portion 41 overlaps the housing bolt B2 in the axial direction of the housing bolt B2. It is avoided that the interposition member press-fitted into the mounting leg 30 has to be interposed between the mounting leg 30 and the mounting portion 41 of the engine. As a result, it is possible to suppress the increase in the number of parts and improve the assembly workability.

  (2) The head B3 of the housing bolt B2 is disposed closer to the rear housing 14 than the fastening bolt 40. According to this, it is possible to prevent the housing bolt B <b> 2 from dropping from the insertion portion 34 by the fastening bolt 40.

(3) According to the scroll compressor 10 of the present embodiment, the scroll compressor 10 can be reduced in weight by the amount of intervening members as in the prior art.
(4) For example, when the interposition member is press-fitted and fixed to the mounting leg 30 as in the prior art, it is necessary to remove the press-fitting member from the mounting leg 30 when it is desired to disassemble the center housing 12 and the rear housing 14. Therefore, it takes time to disassemble the center housing 12 and the rear housing 14. However, in the scroll compressor 10 of this embodiment, when the center housing 12 and the rear housing 14 are to be disassembled, it is only necessary to remove the housing bolts B1 and B2. Can be made easy.

In addition, you may change the said embodiment as follows.
In embodiment, the shape of the insertion part 34 is not specifically limited, For example, square hole shape and groove shape may be sufficient.

  In the embodiment, the insertion portion 34 may be formed in the meat removal portion 33. In this case, the lightening portion 33 also functions as a part of the insertion portion through which the housing bolt B2 can be inserted. In short, the insertion part 34 should just be arrange | positioned so that the fastening bolt 40 may be block | closed when the fastening bolt 40 is penetrated by the penetration holes 31h, 321h, and 322h.

In the embodiment, a plurality of insertion portions 34 may be formed on the mounting leg 30.
In the embodiment, the lightening portion 33 may not be formed on the mounting leg 30.
In the embodiment, the mounting leg 30 protrudes from the bottom wall of the rear housing 14, but may be protruded from the center housing 12, for example.

In the embodiment, the mounting leg 30 may be cylindrical.
In the embodiment, the attachment target of the attachment leg 30 is not limited to the engine attachment portion 41, and may be, for example, an auxiliary machine other than the engine arranged in the engine room.

(Circle) in embodiment, the scroll compressor 10 may not be used for a vehicle air conditioner, and may be used for another air conditioner.
In the embodiment, the compressor is not limited to the scroll compressor 10, and may be, for example, a swash plate type, vane type, or roots type compressor.

  B1, B2 ... Housing bolts, B3 ... Head, 10 ... Scroll compressor as compressor, 11 ... Housing, 12 ... Center housing as first housing component, 14 ... Rear housing as second housing component , 30 ... mounting legs, 31h, 321h, 322h ... insertion holes, 34 ... insertion parts, 40 ... fastening bolts, 41 ... attachment parts to be attached.

Claims (2)

A housing;
A cylindrical mounting leg protruding from the housing;
An insertion hole formed in the extending direction of the mounting leg and through which the shaft portion of the fastening bolt can be inserted, and
The housing is fixed to an attachment object using the fastening bolt,
The housing is
A first housing component;
A second housing component,
A compressor in which the first housing structure and the second housing structure are connected by a housing bolt;
The mounting leg includes a first abutting wall having a first abutting surface against which a head of the fastening bolt abuts, and a second abutting wall having a second abutting surface abutting on the mounting portion to be mounted. Each of the first abutment wall and the second abutment wall is formed so as to penetrate the insertion hole in a position overlapping in the extending direction of the mounting leg,
In the portion between the first contact wall and the second contact wall of the mounting leg, a lightening portion is formed,
In the second contact wall , an insertion portion through which the housing bolt can be inserted is formed in the protruding direction of the mounting leg,
The compressor is characterized in that the insertion portion is arranged so as to be closed by the fastening bolt when the fastening bolt is inserted into the insertion hole. The compressor according to claim 1, wherein a head of the housing bolt is disposed closer to the housing than the fastening bolt.