JP6447174B2 - Compressor - Google Patents

Description

  The present invention relates to a compressor.

  Generally, a cylindrical mounting leg projects from a compressor housing. Then, the bolt inserted into the mounting leg is screwed into the engine mounting part (target to be mounted), whereby the mounting leg is fastened to the engine mounting part and the compressor is mounted to the engine mounting part.

  By the way, in order to reduce the weight of the compressor, for example, Patent Document 1 discloses a configuration in which a surplus of the mounting leg is deleted. As shown in FIGS. 4A and 4B, the mounting leg 100 of the compressor of Patent Document 1 is formed with a notch 100a (thickening part) in the substantially central part of the mounting leg 100 in the axial direction. The cross-sectional shape perpendicular to the axial direction of the mounting leg 100 is substantially U-shaped.

JP 2006-170162 A

  The mounting leg 100 has a first contact wall 101 having a first contact surface 101a with which the head portion 110a of the bolt 110 contacts, and a second contact with a second contact surface 102a with which the mounting portion 111 of the engine contacts. Wall 102. The notch 100 a is provided between the first contact wall 101 and the second contact wall 102 in the axial direction of the mounting leg 100. When the mounting leg 100 is fastened to the engine mounting portion 111 by the bolt 110, the head portion 110a of the bolt 110 and the first contact surface 101a are in contact with each other, and the engine mounting portion 111 and the second contact surface are in contact with each other. 102a abuts, and the mounting leg 100 is sandwiched between the head part 110a of the bolt 110 and the engine mounting part 111 in the axial direction of the mounting leg 100.

  Then, the fastening force of the bolt 110 acts on the mounting leg 100 in the axial direction of the mounting leg 100. At this time, if the notch 100 a is formed in the mounting leg 100, the first abutting wall 101 and the first contact wall 101 and the first abutting wall are caused by a load based on the fastening force of the bolt 110 acting on the mounting leg 100 in the axial direction of the mounting leg 100. 2 The contact wall 102 may be deformed so as to fall toward the notch 100a. If the first contact wall 101 and the second contact wall 102 are deformed so as to fall toward the notch 100a, the fastening force between the mounting leg 100 and the engine mounting portion 111 by the bolt 110 becomes weak. .

  The present invention has been made to solve the above-described problems, and an object thereof is to suppress deformation of the mounting leg due to a load based on a fastening force of a bolt acting in the axial direction of the mounting leg. It is in providing the compressor which can do.

  The compressor that solves the above problems includes a housing and a cylindrical mounting leg that protrudes from the housing, and the housing is fixed to an object to be attached using a bolt that is inserted into the mounting leg. The mounting leg includes a first contact wall having a first contact surface that contacts the head of the bolt, a second contact wall having a second contact surface that contacts the mounting target, and the mounting leg. A thinned portion formed between the first abutment wall and the second abutment wall in the axial direction of the compressor, wherein the mounting leg includes the first abutment surface and the A side wall having an outer surface connecting to the second abutment surface is provided, and when the direction intersecting the axial direction of the mounting leg is defined as the width direction, the outer surface has a width of the mounting leg of the first contact. It is formed so as to spread from one of the contact surface or the second contact surface toward the other.

  According to this, for example, compared with the case where the outer side surface extends with the same width along the axial direction of the mounting leg from the first contact surface to the second contact surface, the width of the mounting leg is the first. Fastening bolts acting on at least one of the first and second abutment walls by a side wall having an outer surface formed so as to spread from one of the abutment surface or the second abutment surface toward the other It becomes easy to receive the load based on force. That is, the side wall provided with the outer surface formed so that the width of the mounting leg widens from one of the first contact surface or the second contact surface toward the other is the first contact wall and the second contact surface. It functions as a beam that suppresses deformation that falls down toward the thinned portion in at least one of the walls. Accordingly, it is possible to prevent the load based on the fastening force of the bolt acting in the axial direction of the mounting leg from being deformed so that at least one of the first abutting wall and the second abutting wall falls toward the lightening portion. can do.

  In the compressor, the outer surface has a width of the mounting leg that increases from the first contact surface toward the second contact surface and extends from the second contact surface toward the first contact surface. It is preferable that the mounting leg is formed to have a wider width. According to this, it can be made easy to suppress that the 1st contact wall and the 2nd contact wall are deformed so that it may fall down toward a meat extraction part.

  In the compressor described above, the outer surface has a width of the mounting leg on either side of the first contact wall or the second contact wall on both sides of the first contact wall or the second contact wall. It is preferable that it is formed so as to spread from one to the other.

  According to this, the outer surface is formed so as to spread from one side of the first contact wall or the second contact wall to the other side on one side of the first contact wall or the second contact wall. Compared to the case, it is possible to easily receive the load based on the fastening force of the bolt acting on the first contact wall and the second contact wall.

  In the compressor, the outer surface is directed toward the outer side of the mounting leg from the first abutting surface toward the second abutting wall side in the axial direction of the mounting leg with respect to the axial direction of the mounting leg. A first oblique surface extending while obliquely extending, and an axial direction of the mounting leg from the second abutting surface toward the first abutting wall side in the axial direction of the mounting leg toward the outer side of the mounting leg. It is preferable to have a second oblique surface extending obliquely with respect to and a flat connecting surface connecting the first oblique surface and the second oblique surface. According to this, the strength of the side wall can be increased as compared with the case where the first oblique surface and the second oblique surface are continuous.

In the compressor, the first oblique surface and the second oblique surface are preferably flat surfaces.
According to this, compared with the case where the first oblique surface and the second oblique surface are curved, by the side wall provided with the outer surface having at least one of the first oblique surface and the second oblique surface, The load based on the fastening force of the bolt acting on at least one of the first contact wall and the second contact wall can be easily received.

  According to this invention, it can suppress that a mounting leg deform | transforms with the load based on the fastening force of the volt | bolt which acts on the axial direction of a mounting leg.

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, and a volt | bolt. The rear view which shows the state in which the attachment leg is fastened by the attachment part of an engine with the volt | bolt. (A) is a sectional side view showing a mounting leg, a mounting portion of an engine, and a bolt in a conventional example, and (b) is a sectional view taken along line 4-4 in FIG.

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 has a covered cylindrical front housing 13 connected to one end of a bottomed cylindrical center housing 12 (shell). A covered cylindrical rear housing 14 is connected to the end.

  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 the engine to be mounted using bolts 40 inserted through the mounting legs 30. The mounting portion 41 is formed with a female screw hole 41a into which the 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 bolt 40, and a second contact surface having a second contact surface 32a that contacts the mounting portion 41 of the engine. And a 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. The first contact wall 31 is formed with a circular insertion hole 31h through which the shaft portion 40b of the bolt 40 is inserted, and the shaft portion 40b of the bolt 40 is inserted into the second contact wall 32. A circular insertion hole 32h is formed.

  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. The inside of the lightening portion 33 communicates with the insertion holes 31h and 32h.

  The mounting leg 30 has a pair of side walls 35 having an outer surface 34 that connects the first contact surface 31a and the second contact surface 32a. The outer surface 34 of each side wall is inclined with respect to the axial direction of the mounting leg 30 toward the outer side of the mounting leg 30 toward the second abutting wall 32 side in the axial direction of the mounting leg 30 from the first contact surface 31a. The first oblique surface 34a extends while intersecting. Further, the outer side surface 34 obliquely crosses with respect to the axial direction of the mounting leg 30 toward the outer side of the mounting leg 30 toward the first abutting wall 31 side in the axial direction of the mounting leg 30 from the second contact surface 32a. The second oblique surface 34b extends while extending. The first oblique surface 34a and the second oblique surface 34b are flat surfaces. Further, the outer surface 34 has a flat connecting surface 34 c that connects the first oblique surface 34 a and the second oblique surface 34 b and extends along the axial direction of the mounting leg 30.

  An edge 311a on the first oblique surface 34a side of the first contact surface 31a and an edge 321a on the second oblique surface 34b side of the second contact surface 32a are along the axial direction of the mounting leg 30. It arrange | positions on the virtual straight line L1 extended. The side wall 35 is a wall that exists near the outer side surface 34 that is closer to the virtual straight line L <b> 1 among the outer side surfaces 34. The first oblique surfaces 34 a are disposed on both sides of the first contact wall 31, and the second oblique surfaces 34 b are disposed on both sides of the second contact wall 32.

  Assuming that the direction intersecting the axial direction of the mounting leg 30 (the direction of the arrow Y1) is the width direction, the outer surface 34 has a width of the mounting leg 30 equal to that of the first contact surface 31a or the second contact surface 32a. It is formed to spread from one side to the other. Specifically, the outer surface 34 has a width of the mounting leg 30 that increases from the first contact surface 31a toward the second contact surface 32a, and extends from the second contact surface 32a toward the first contact surface 31a. Thus, the width of the mounting leg 30 is formed to be widened. Further, the outer surface 34 is formed such that the width of the mounting leg 30 is widened from the first contact wall 31 toward the second contact wall 32 on both sides of the first contact wall 31. The outer surface 34 is formed so that the width of the mounting leg 30 is widened from the second contact wall 32 toward the first contact wall 31 on both sides of the second contact wall 32.

Next, the operation of this embodiment will be described.
When the mounting leg 30 is fastened to the engine mounting portion 41 by the bolt 40, the head portion 40a of the bolt 40 and the first contact surface 31a are in contact with each other, and the engine mounting portion 41 and the second contact surface are in contact with each other. The mounting leg 30 is sandwiched between the head 40a of the bolt 40 and the mounting part 41 of the engine in the axial direction of the mounting leg 30. Then, the fastening force of the bolt 40 acts on the mounting leg 30 in the axial direction of the mounting leg 30.

  At this time, for example, the first oblique surface 34a is compared to the case where the outer surface 34 extends from the first contact surface 31a to the second contact surface 32a along the axial direction of the mounting leg 30 with the same width. The pair of side walls 35 having the outer surface 34 having the second oblique surface 34b makes it easy to receive a load based on the fastening force of the bolt 40 acting on the first contact wall 31 and the second contact wall 32. That is, the pair of side walls 35 having the outer surface 34 formed so that the width of the mounting leg 30 widens from one of the first contact surface 31a or the second contact surface 32a to the other is the first contact surface 31a. It functions as a beam that suppresses deformation of the contact wall 31 and the second abutment wall 32 that falls toward the thinned portion 33. Therefore, the first abutting wall 31 and the second abutting wall 32 are deformed so as to fall toward the thinned portion 33 due to a load based on the fastening force of the bolt 40 acting in the axial direction of the mounting leg 30. And the fastening force between the mounting leg 30 and the engine mounting portion 41 by the bolt 40 is ensured.

In the above embodiment, the following effects can be obtained.
(1) The mounting leg 30 includes a pair of side walls 35 having an outer surface 34 that connects the first contact surface 31a and the second contact surface 32a. The outer side surface 34 is formed such that the width of the mounting leg 30 increases from one of the first contact surface 31a and the second contact surface 32a toward the other. For example, consider a case where the outer side surface 34 extends with the same width along the axial direction of the mounting leg 30 from the first contact surface 31a to the second contact surface 32a. Compared to this case, the width of the mounting leg 30 is increased by the side wall 35 having the outer surface 34 formed so as to spread from one of the first contact surface 31a or the second contact surface 32a toward the other. It becomes easy to receive the load based on the fastening force of the bolt 40 acting on the first contact wall 31 and the second contact wall 32. That is, the pair of side walls 35 having the outer surface 34 formed so that the width of the mounting leg 30 widens from one of the first contact surface 31a or the second contact surface 32a to the other is the first contact surface 31a. It functions as a beam that suppresses deformation of the contact wall 31 and the second abutment wall 32 that falls toward the thinned portion 33. Therefore, the first abutting wall 31 and the second abutting wall 32 are deformed so as to fall toward the thinned portion 33 due to a load based on the fastening force of the bolt 40 acting in the axial direction of the mounting leg 30. Can be suppressed.

  (2) The outer surface 34 is attached from the first abutment surface 31a toward the second abutment surface 32a with the width of the mounting leg 30 increasing and from the second abutment surface 32a toward the first abutment surface 31a. It is formed so that the width of the leg 30 is widened. According to this, it can be made easy to suppress that the 1st contact wall 31 and the 2nd contact wall 32 deform | transform so that it may fall toward the thinning part 33. FIG.

  (3) The outer surface 34 has a width of the mounting leg 30 on either side of the first contact wall 31 or the second contact wall 32 on either side of the first contact wall 31 or the second contact wall 32. It is formed to spread toward. According to this, the outer surface 34 spreads from one side of the first contact wall 31 or the second contact wall 32 toward the other side on one side of the first contact wall 31 or the second contact wall 32. Compared with the case where it is formed in, the load based on the fastening force of the bolt 40 acting on the first contact wall 31 and the second contact wall 32 can be easily received.

  (4) The outer side surface 34 includes a first oblique surface 34a, a second oblique surface 34b, and a flat connecting surface 34c that connects the first oblique surface 34a and the second oblique surface 34b. Have. According to this, the strength of the side wall 35 can be increased compared to the case where the first oblique surface 34a and the second oblique surface 34b are continuous.

  (5) The first oblique surface 34a and the second oblique surface 34b are flat. According to this, compared with the case where the first oblique surface 34a and the second oblique surface 34b are curved, the side wall having the outer surface 34 having the first oblique surface 34a and the second oblique surface 34b. 35 makes it easy to receive a load based on the fastening force of the bolt 40 acting on the first contact wall 31 and the second contact wall 32.

  (6) The mounting legs 30 are, for example, a pair of outer surfaces 34 as compared with the case where the outer surfaces 34 extend from the first contact surface 31a to the second contact surface 32a with the same width along the axial direction of the mounting legs 30. The size of the outer side surface 34 is reduced by a portion corresponding to the first oblique surface 34a and the second oblique surface 34b on the first contact surface 31a and second contact surface 32a sides. Therefore, the weight of the scroll compressor 10 can be reduced.

In addition, you may change the said embodiment as follows.
In the embodiment, the first oblique surface 34a and the second oblique surface 34b may be curved.

In the embodiment, the first oblique surface 34 a and the second oblique surface 34 b may be provided only on one side across the first contact wall 31 or the second contact wall 32.
In the embodiment, the side wall 35 may have a configuration including the outer side surface 34 having either the first oblique surface 34a or the second oblique surface 34b.

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. The first oblique surface 34 a and the second oblique surface 34 b may be formed so as to extend in the circumferential direction on the outer peripheral surface of the mounting leg 30.

In the embodiment, the outer surface 34 may be configured such that the connecting surface 34c is deleted and the first oblique surface 34a and the second oblique surface 34b are made continuous.
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.

  DESCRIPTION OF SYMBOLS 10 ... Scroll type compressor as a compressor, 11 ... Housing, 30 ... Mounting leg, 31 ... 1st contact wall, 31a ... 1st contact surface, 32 ... 2nd contact wall, 32a ... 2nd contact Surface, 33 ... Meat removal part, 34 ... Outer surface, 34a ... First oblique surface, 34b ... Second oblique surface, 34c ... Connection surface, 35 ... Side wall, 40 ... Bolt, 40a ... Head, 41 ... Installation The target mounting part.

Claims (3)

A housing;
A cylindrical mounting leg protruding from the housing,
The housing is fixed to a mounting target using a bolt inserted through the mounting leg,
The mounting leg is
A first abutment wall having a first abutment surface that abuts against the head of the bolt;
A second abutment wall having a second abutment surface against which the attachment object abuts;
A thinning portion formed between the first contact wall and the second contact wall in the axial direction of the mounting leg,
The mounting leg includes a side wall having an outer surface connecting the first contact surface and the second contact surface,
When the direction intersecting the axial direction of the mounting leg is the width direction,
The outer surface is formed such that the width of the mounting leg is widened from one of the first contact surface or the second contact surface toward the other ,
The outer side surface extends from the first contact surface to a position overlapping with the lightening portion when viewed in the width direction, and extends from the first contact surface to the second contact wall in the axial direction of the mounting leg. A compressor comprising a first oblique surface that obliquely intersects the axial direction of the mounting leg toward the outside of the mounting leg toward the side . The outer side,
Second diagonal extending while obliquely intersects the axial direction of the mounting leg towards the outside of the mounting legs as before Symbol second contact surface towards the first abutment wall in the axial direction of the attachment leg Surface,
The compressor according to claim 1, characterized in that it comprises a and a flat surface shaped interlocking surface that connects the second swash交面and the first swash交面. The compressor according to claim 2 , wherein the first oblique surface and the second oblique surface are flat surfaces.