JP2013133911A - Seal cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seal cap capable of avoiding contact between its cap portion detached at pulling the seal cap out, and a stud bolt provided at a compressor.SOLUTION: A seal cap 20 includes: an intake side cap part 21 that blocks an intake hole 13, the cap portion being made of an elastically deformable material; a discharge side cap part 22 that blocks a discharge hole 14; a bolt insertion part 23 through which a stud bolt 15 is inserted; a base body part 27 that integrally connects the intake side cap part 21, discharge side cap part 22 and bolt insertion part 23; and a first gripping part 25 and auxiliary gripping part 26 both connected to the base body part 27. A distance K1 between a first root part 25B and the bolt insertion part 23 is set shorter than a distance K2 between the first root part 25B and the discharge side cap part 22, as the first root part 25B is provided between the bolt insertion part 23 and discharge side cap part 22, with an auxiliary root part 26C being formed nearer to an intake side cap part 21 side than the first root part 25B.

Description

  The present invention relates to a seal cap that closes a suction hole and a discharge hole, which are refrigerant flow holes in a compressor.

In the case of a compressor for vehicle air conditioning, after the compressor is produced in a factory, lubricating oil is sealed inside the compressor.
In the housing of the compressor, a suction hole and a discharge hole are formed in a connection portion connected to an external pipe.
After the lubricating oil is sealed, a rubber or resin seal cap is press-fitted into the suction hole or discharge hole, and the suction hole or discharge hole is sealed with the seal cap.

As a conventional seal cap, for example, there is a dust-proof cap used in the vehicle air conditioner disclosed in Patent Document 1.
In the vehicle air conditioner described in Patent Document 1, as shown in FIG. 9, a connection block 100 is provided at an end of a set of pipes through which refrigerant flows, and a first hole communicated with the set of pipes. The part 101 and the second hole part 102 are open.
The connection block 100 is provided with a dustproof cap 103 that prevents dust and the like from entering the inside of the evaporator through the first hole 101 and the second hole 102.
The dust-proof cap 103 is formed so as to protrude from the body 106 and the body 106 including the first fitting portion 104 and the second fitting portion 105 that close the first hole portion 101 and the second hole portion 102. The hook portion 107 is pulled when being detached from the connection block 100.
The hook portion 107 is formed to be rotatable with respect to the body 106.

JP 2007-83747 A

  However, in the dustproof cap shown in FIG. 9, when the dustproof cap 103 is pulled out, the second fitting portion 105 is easily detached from the second hole portion 102 by grasping the hook portion 107 and pulling it out in the direction of the arrow. However, as indicated by a two-dot chain line in FIG. 9, the dust-proof cap 103 including the second fitting portion 105 may be caught by the bolt 108 and cannot be easily detached from the connection block 100.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a seal cap capable of avoiding contact between a cap portion detached when the seal cap is pulled out and a stud bolt provided in the compressor. Is in the provision of.

  In order to solve the above-mentioned problem, the invention according to claim 1 is directed to a connection part for connecting a pipe through which a fluid flows, a first flow path hole opened in an end face of the connection part, and an end face of the connection part. A first cap portion that is formed of an elastically deformable material and closes the first flow path hole, and a bolt insertion through which the stud bolt is inserted. A seal cap comprising: a base portion integrally connecting the first cap portion and the bolt insertion portion; and a grippable first grip portion connected to the base portion. The first grip portion is connected to the base portion and a first handle portion formed away from the base portion, and becomes a force application point when a force in a pulling direction is applied to the first handle portion. 1 root portion, and a distance between the first root portion and the bolt insertion portion. It is characterized in that it is shorter than the distance between said first base portion and the first cap portion.

  According to the first aspect of the present invention, the distance between the first root portion and the bolt insertion portion is set to be shorter than the distance between the first root portion and the first cap portion. When a force in the pulling direction is applied, a pulling load is applied to the seal cap with the connecting portion between the first base portion and the base portion as an action point, and the bolt insertion portion can be pulled out in the axial direction of the stud bolt. . In addition, the first cap portion can be detached from the first flow path hole. Therefore, it is possible to avoid contact between the detached first cap portion and the stud bolt.

  According to a second aspect of the present invention, in the seal cap according to the first aspect, the compressor includes a second flow path hole formed in the end surface, and the stud bolt includes the first flow path hole. And the second flow path hole, and a second cap part that closes the second flow path hole is integrally connected to the base part, and the bolt insertion part is connected to the first cap. It is characterized by being formed between a part and the said 2nd cap part.

  According to the second aspect of the invention, since the second cap portion that closes the second flow passage hole is integrally connected to the base portion, the first flow passage hole can be added to the first flow passage hole with one seal cap. It becomes possible to block the two flow path holes. In the process of pulling out the seal cap, the bolt insertion portion is pulled out in the axial direction of the stud bolt after the first cap portion and the second cap are separated from the first flow path hole and the second flow path hole.

  According to a third aspect of the present invention, in the seal cap according to the second aspect of the present invention, the seal cap includes a second gripping portion that is integrally connected to the base portion, and the second gripping portion is spaced apart from the base portion. A second handle portion formed; and a second root portion that is connected to the base portion and serves as a point of action of the force when a pulling force is applied to the second handle portion, and is connected to the base portion A second handle portion formed to extend from the second root portion so as to be separated from the base portion, and the distance between the second root portion and the bolt insertion portion is The distance between the second base portion and the second cap portion is set to be shorter.

  According to the invention of claim 3, the distance between the second root portion and the bolt insertion portion is set to be shorter than the distance between the second root portion and the second cap portion. 2. When a force in the pulling direction is applied to the handle part, a pulling load is applied to the seal cap with the connecting part of the second root part and the base part as an action point, and the bolt insertion part is pulled out in the axial direction of the stud bolt. Is possible. In addition, the second cap part can be detached from the second flow path hole. Therefore, it is possible to avoid contact between the detached second cap portion and the stud bolt. Therefore, the first cap portion and the second cap portion can be easily detached by applying force in the direction in which the first handle portion and the second handle portion are simultaneously grasped and pulled out, and the bolt insertion portion is connected to the stud bolt. Thus, it is possible to avoid the contact between the detached first cap portion and second cap portion and the stud bolt. Thus, compared to the case of only the first gripping portion, the pulling load can be distributed to the first gripping portion and the second gripping portion, so that the durability strength of the seal cap can be improved.

  According to a fourth aspect of the present invention, in the seal cap according to the first or second aspect, the auxiliary cap is integrally connected to the base portion, and the auxiliary grip portion is an auxiliary connected to the base portion. A base portion is provided, and the auxiliary base portion is formed closer to the first cap portion than the first base portion.

  According to the invention of claim 4, when the auxiliary root portion is formed closer to the first cap portion than the first root portion, first, when a force is applied in a direction in which the auxiliary root portion is gripped and pulled out, A pulling load is applied to the seal cap with the connecting portion of the auxiliary base portion and the base portion as an action point, and the first cap portion can be easily detached from the first flow path hole. Thereafter, when the pulling operation is continued with the first gripping portion, the second cap portion can be detached from the second flow path hole and the bolt insertion portion is pulled out in the axial direction of the stud bolt. Is possible. Therefore, it is possible to reduce the pull-out load in the first grip portion.

  According to a fifth aspect of the present invention, in the seal cap according to the third aspect, the first gripping part is disposed on the first cap part side with respect to the bolt insertion part, and the second gripping part is inserted into the bolt insertion part. It is arrange | positioned with respect to a part at the said 2nd cap part side, It is characterized by the above-mentioned.

  According to the invention described in claim 5, since the first gripping portion and the second gripping portion may be formed on the opposite sides with respect to the bolt insertion portion, the manufacture of the seal cap is easy.

  According to a sixth aspect of the present invention, in the seal cap according to the fourth aspect, the first gripping portion and the auxiliary gripping portion are disposed on the first cap portion side with respect to the bolt insertion portion. Features.

  According to the sixth aspect of the present invention, the first gripping portion and the auxiliary gripping portion are disposed on the first cap portion side with respect to the bolt insertion portion, thereby simultaneously gripping the first gripping portion and the auxiliary gripping portion. Thus, the pulling operation may be performed, and the work can be performed efficiently. That is, when the first gripping portion and the auxiliary gripping portion are arranged on different sides with respect to the bolt insertion portion, first, the auxiliary gripping portion is gripped and the first cap portion is removed from the first flow path hole. After the detachment, an operation of changing the auxiliary gripping portion to the first gripping portion is required. However, when they are arranged on the same side, the first gripping part and the auxiliary gripping part are gripped at the same time and the pulling operation is performed, so that the first cap part is first removed and then the auxiliary gripping part is gripped. It is only necessary to continue the pulling-out operation so that the first gripping part is gripped and the time for holding the gripping part can be reduced.

  The invention according to claim 7 is the seal cap according to any one of claims 1 to 6, wherein the first gripping part has a hollow annular shape, and the bolt insertion part in the first gripping part. The linear distance between two points to the farthest position is set longer than the length from the end surface to the tip of the stud bolt.

  According to the seventh aspect of the present invention, in the process of pulling out the seal cap, the first gripping portion is prevented from interfering with the stud bolt, and the separation of the seal cap from the compressor can be made more reliable.

  According to an eighth aspect of the present invention, in the seal cap according to any one of the first to seventh aspects, the bolt protection that covers the outer peripheral surface of the stud bolt at a position corresponding to the bolt insertion portion of the base portion. The part is integrally formed.

  According to the eighth aspect of the present invention, in the state where the seal cap is attached to the connection portion, the bolt protection portion covers the outer peripheral surface of the stud bolt, so that the stud bolt can be protected.

  A ninth aspect of the present invention is the seal cap according to any one of the first to eighth aspects, wherein the first handle portion is bent in a direction away from the end surface toward the distal end side with respect to the end surface of the connection portion. It is characterized by being.

  According to the ninth aspect of the present invention, the first handle portion can be easily grasped.

  A tenth aspect of the present invention is the seal cap according to the fourth aspect, wherein the second handle portion is formed to be bent in a direction away from the end surface toward the distal end side with respect to the end surface of the connection portion. To do.

  According to invention of Claim 10, a 2nd handle part can be hold | gripped easily.

  ADVANTAGE OF THE INVENTION According to this invention, the seal cap which can avoid the contact with the 1st cap part which removed | separated at the time of extraction of a seal cap, and the stud bolt provided in the compressor can be provided.

It is a disassembled perspective view of the compressor and seal cap which apply the seal cap which concerns on 1st Embodiment. It is a front view of the compressor which applies the seal cap which concerns on 1st Embodiment. (A) is a top view of the seal cap which concerns on 1st Embodiment, (b) is a side view of the seal cap which concerns on 1st Embodiment. (A)-(d) is explanatory drawing explaining the extraction process of the seal cap which concerns on 1st Embodiment. (A) is a top view of the seal cap which concerns on 2nd Embodiment, (b) is a side view of the seal cap which concerns on 2nd Embodiment. (A) is a top view of the seal cap which concerns on 3rd Embodiment, (b) is a side view of the seal cap which concerns on 3rd Embodiment. (A) is a top view of the seal cap which concerns on other embodiment, (b) is a side view of the seal cap which concerns on other embodiment. (A) is a top view of the seal cap which concerns on other embodiment, (b) is a top view of the seal cap which concerns on other embodiment. It is the side view which fractured and showed the principal part of the prior art.

(First embodiment)
Hereinafter, the seal cap according to the first embodiment will be described with reference to the drawings.
A compressor 10 shown in FIGS. 1 and 2 is an on-vehicle compressor, and a housing 11 of the compressor 10 is mainly composed of a cylinder block, a front housing, and a rear housing.
A connection portion 12 for connecting a pipe through which a refrigerant as a fluid flows is provided at an upper portion of the housing 11. An end face 12A is formed in the connecting portion 12, and a suction hole 13 as a first flow path hole and a discharge hole 14 as a second flow path hole are opened in the end face 12A. A stud bolt 15 is erected between the suction hole 13 and the discharge hole 14 on the end surface 12A. The stud bolt 15 is a bolt for fixing a pipe connected to the connection portion 12, and is screwed into a screw hole provided in the connection portion 12.
In this embodiment, as shown in FIG. 1, in the connection portion 12 of the compressor 10, the centers of the suction hole 13, the stud bolt 15, and the discharge hole 14 are arranged so as to pass on the virtual straight line L.

The seal cap 20 shown in FIG. 1, FIG. 3 (a) and FIG. 3 (b) is for mounting on the connecting portion 12 to close the suction hole 13 and the discharge hole 14, and for example, by pressurization by human power It is made of an elastically deformable resin material such as polyurethane or a rubber material.
The seal cap 20 includes a suction side cap part 21, a discharge side cap part 22, a bolt protection part 24, a first grip part 25, and an auxiliary grip part 26.
Further, the seal cap 20 includes a base portion 27 that integrally connects the suction side cap portion 21, the discharge side cap portion 22, the bolt protection portion 24, the first grip portion 25, and the auxiliary grip portion 26.
Further, a bolt insertion portion 23 is provided inside the bolt protection portion 24 in the base portion 27.

The suction side cap portion 21 as the first cap portion is formed in a columnar shape, and an annular rib 21 </ b> A is formed on the outer peripheral surface of the suction side cap portion 21. A recess (not shown) is formed so as to enter the inside from the distal end side of the suction side cap portion 21. The diameter of the suction side cap portion 21 is set corresponding to the hole diameter of the suction hole 13 so as to close the suction hole 13 by press fitting.
The discharge-side cap portion 22 corresponds to the second cap portion, and is formed in a cylindrical shape. The discharge-side cap portion 22 includes an annular rib 22A on the outer peripheral surface, and includes a recess (not shown) similar to the suction-side cap portion 21. The diameter of the discharge side cap portion 22 is set corresponding to the hole diameter of the discharge hole 14 so as to close the discharge hole 14 by press-fitting.

The bolt insertion part 23 is a part through which the stud bolt 15 can be inserted, and is located between the suction side cap part 21 and the discharge side cap part 22.
In this embodiment, a bolt protection portion 24 is provided in a cylindrical shape at a position corresponding to the bolt insertion portion 23 of the base portion 27. The inner diameter of the bolt protection part 24 is formed larger than the inner diameter of the bolt insertion part 23.
As shown by a two-dot chain line in FIG. 2, when the seal cap 20 is attached to the connection portion 12, the stud bolt 15 is inserted into the bolt insertion portion 23, and the bolt protection portion 24 covers the outer peripheral surface of the stud bolt 15. .

As shown in FIG. 3B, the base portion 27 includes a contact surface 27A that contacts the end surface 12A of the connection portion 12, and a thick rib 27B is formed on the outer peripheral edge.
As shown in FIG. 3A, in this embodiment, a cut 28 is formed around the bolt protection part 24 and the suction side cap part 21 in the inner range surrounded by the ribs 27 </ b> B of the base part 27. ing. The cut 28 has two ends T1 and T2. The notch 28 is formed in a loop shape along the inner peripheral side of the rib 27B, starting from one end T1 and ending at the other end T2.
The end portions T1 and T2 are perpendicular to an imaginary straight line L1 that connects the center of the suction side cap portion 21 and the center of the bolt insertion portion 23, and pass through a virtual straight line L2 that passes through the center of the bolt insertion portion 23 and is parallel to the end surface 12A. When pulled, it is positioned slightly on the ejection side cap portion 22 side from the virtual straight line L2 and is symmetric with respect to the virtual straight line L1.

As shown in FIG. 3A, a first grip 25 is formed around the notch 28. The first grip portion 25 includes a pair of first root portions 25B connected to the base portion 27, and a first handle portion 25A formed extending from the first root portion 25B so as to be separated from the base portion 27. I have. The first grip portion 25 has a hollow annular shape. The first gripping portion 25 is for making it easy to pull out the seal cap 20 attached to the connecting portion 12 in the axial direction of the stud bolt 15.
The first base portion 25 </ b> B has a shape curved inward and is connected to the base portion 27. If the connecting portions of the first base portion 25B and the base portion 27 are A1 and A2, the connecting portions A1 and A2 are located at positions adjacent to the end portions T1 and T2, and the first gripping portion 25 is connected to the connecting portions A1 and A2. It is formed so that it can be bent with respect to the base portion 27 with the portions A1 and A2 as fulcrums. Further, when a force in the pulling direction is applied to the first gripping portion 25, the connecting portions A <b> 1 and A <b> 2 serve as points of action, and a pulling load acts on the seal cap 20.
The distance K1 between the first root portion 25B and the bolt insertion portion 23 is set to be shorter than the distance K2 between the first root portion 25B and the discharge side cap portion 22, and the first root portion 25B is the discharge side cap portion. It is provided in a part between 22 and the bolt protection part 24. For this reason, when the seal cap 20 is pulled out, the bolt protection part 24 can be easily pulled out in the axial direction of the stud bolt 15, and the discharge side cap part 22 can be easily detached from the discharge hole 14.

As shown in FIG. 3A, a circular hole 26 </ b> A is formed in a region on the inner side of the notch 28 in the base portion 27 and on the side opposite to the bolt insertion portion 23 around the suction side cap portion 21. . An arc-shaped auxiliary gripping portion 26 is formed at a portion surrounded by the circular hole 26 </ b> A and the cut 28.
The auxiliary gripping portion 26 includes a pair of auxiliary root portions 26 </ b> C that are connected to the base portion 27, and an auxiliary handle portion 26 </ b> B that extends from the auxiliary root portion 26 </ b> C so as to be separated from the base portion 27. The auxiliary gripping portion 26 is for easily pulling out the suction side cap portion 21 fitted in the suction hole 13 of the connection portion 12, and is located at a position opposite to the bolt insertion portion 23 side of the suction side cap portion 21. Is formed.
If the connecting portions between the auxiliary base portion 26C and the base portion 27 are B1 and B2, the auxiliary gripping portion 26 is formed to be bendable with the connecting portions B1 and B2 as fulcrums. Further, when a force in the direction of pulling out the seal cap 20 is applied to the auxiliary gripping portion 26, the connecting portions B <b> 1 and B <b> 2 serve as operating points and a pulling load acts on the seal cap 20.
The auxiliary root portion 26C is formed closer to the suction side cap portion 21 than the first root portion 25B, and is formed at a position opposite to the bolt insertion portion 23 in the periphery of the suction side cap portion 21. When the seal cap 20 is pulled out, a pulling load is easily applied to the suction side cap portion 21.

As shown in FIG. 3A, if the farthest point R is the farthest point R from the bolt insertion part 23 in the first handle 25A, the farthest point R is the virtual straight line L1 and the first handle 25A. Corresponds to the intersection with the peripheral end.
Here, a virtual straight line F1 connecting the end portions T1 and T2 of the cut 28 is considered, and a linear distance between the virtual straight line F1 and the farthest point R is D1. The linear distance D1 is set longer than the length D2 (see FIG. 2) from the end surface 12A to the tip of the stud bolt 15. The linear distance D1 is set to be longer than the length D2 from the end surface 12A to the tip of the stud bolt 15, so that the first gripping portion 25 interferes with the stud bolt 15 when the seal cap 20 is pulled out. It can be avoided.

In this embodiment, the width of the cut 28 is about 1 mm, but the width of the cut 28 is not particularly limited. For example, the cut 28 may be a cut having no gap.
In addition, the cut may be a groove that is not completely cut with respect to the front and back of the base portion 27, or a cut formed in a perforated shape. In the case of concave grooves or perforated cuts, it is sufficient that when the seal cap 20 is pulled out, the front and back surfaces of the base portion 27 are completely cut by the pulling force.
In this embodiment, the inner diameter dimension of the bolt protector 24 covering the periphery of the stud bolt 15 is larger than the outer diameter dimension of the stud bolt 15 so that a predetermined gap is formed therebetween. For this reason, when the stud bolt 15 is screwed into the connecting portion 12 after the seal cap 20 is attached to the connecting portion 12 of the compressor 10, a tool or the like is put in the gap between the stud bolt 15 and the bolt protecting portion 24. It is easy and work efficiency can be improved.

Next, the process of pulling out the seal cap 20 of this embodiment will be described based on FIGS. 4 (a) to 4 (d).
4 (a) to 4 (d), the direction of the arrow is upward, and the seal cap 20 is pulled out in the order of FIGS. 4 (a), 4 (b), 4 (c), and 4 (d). Is done.
The compressor 10 is mounted in the engine room of the vehicle, and the stud bolt 15 provided in the connection portion 12 is in a state of being erected in the vertical direction.
The suction side cap portion 21 of the seal cap 20 closes the suction hole 13, the discharge side cap portion 22 closes the discharge hole 14, and the seal cap 20 is attached to the connecting portion 12 of the compressor 10.
As shown in FIG. 4A, an operator who performs an operation of pulling out the seal cap 20 firstly
Both the first grip part 25 and the auxiliary grip part 26 are gripped at the same time and pulled in the direction of the arrow, which is the pulling direction.
At this time, the auxiliary gripping portion 26 bends with the connecting portions B1 and B2 of the auxiliary base portion 26C and the base body portion 27 as fulcrums, and a pulling load acts on the seal cap 20 with the connecting portions B1 and B2 as operating points. Further, the first gripping portion 25 bends with the connecting portions A1 and A2 of the first root portion 25B and the base portion 27 as fulcrums.

Next, as shown in FIG. 4B, the suction side cap portion 21 is detached from the suction hole 13 by further lifting the first grip portion 25 and the auxiliary grip portion 26 in the direction of the arrow.
Up to this point, both the first gripping part 25 and the auxiliary gripping part 26 have been gripped at the same time, and the pulling operation has been performed. Here, however, the gripping of the auxiliary gripping part 26 is released and only the first gripping part 25 is gripped. To continue the pulling operation. The first gripping portion 25 is bent in a direction approaching the stud bolt 15 with the connecting portions A1 and A2 as fulcrums, and a pulling load acts on the seal cap 20 with the connecting portions A1 and A2 as operating points.
By the way, since the linear distance D1 is set longer than the length D2, it is avoided that the 1st holding | grip part 25 interferes with the stud bolt 15. FIG.

Next, as shown in FIG. 4 (c), by further pulling up the first grip portion 25 in the direction of the arrow, the discharge side cap portion 22 is detached from the discharge hole 14 and the bolt protection portion 24 is removed from the stud bolt 15. Start to leave. At this time, the auxiliary gripping portion 26 slightly hangs downward due to its own weight, and the base portion 27 that supports the auxiliary gripping portion 26 and the suction side cap portion 21 moves upward while being slightly inclined downward. Therefore, the separated suction side cap portion 21 and the stud bolt 15 do not come into contact with each other.
The distance K1 between the first root portion 25B and the bolt insertion portion 23 is set to be shorter than the distance K2 between the first root portion 25B and the discharge-side cap portion 22, so that the first grip portion 25 is moved upward. When a force is applied in the pulling direction, a pulling load is applied with the connecting portions A1 and A2 of the first base portion 25B and the base portion 27 as the action points, and the bolt protection portion 24 is easily pulled in the axial direction of the stud bolt 15. ing.
In addition, since the first root portion 25B is provided at a portion between the discharge side cap portion 22 and the bolt protection portion 24, when a force is applied in a direction in which the first gripping portion 25 is lifted upward, the first root portion 25B is discharged. The side cap portion 22 can be easily detached from the discharge hole 14.

  Next, as shown in FIG. 4 (d), by further pulling up the first gripping part 25 in the direction of the arrow, the bolt protection part 24 comes out of the stud bolt 15, and the extraction of the seal cap 20 is completed. At this time, the discharge-side cap portion 22 and the base portion 27 that supports the discharge-side cap portion 22 move upward while being slightly inclined downward. Therefore, the discharge-side cap part 22 and the stud bolt 15 that are detached do not come into contact with each other.

According to 1st Embodiment, there exist the following effects.
(1) The seal cap 20 is provided with two gripping portions, a first gripping portion 25 and an auxiliary gripping portion 26, and the two gripping portions are formed on the suction side cap portion 21 side with respect to the bolt insertion portion 23. . Therefore, in the process of pulling out the seal cap 20 attached to the connecting portion 12 of the compressor 10, by first holding both the first gripping portion 25 and the auxiliary gripping portion 26 and performing the pulling operation, first, the suction side cap portion. 21 can be detached from the suction hole 13. Thereafter, the auxiliary gripping portion 26 is released from gripping, and the pulling operation is continued so as to grip only the first gripping portion 25, whereby the discharge side cap portion 22 is detached from the discharge hole 14 and the bolt protection portion 24 is removed. Can be pulled out in the axial direction of the stud bolt 15. At this time, the separated suction side cap part 21 and discharge side cap part 22 move upward while being slightly inclined downward, so that the separated suction side cap part 21 and discharge side cap part 22 come into contact with the stud bolt 15. The seal cap 20 can be reliably removed from the compressor 10. In addition, since the time for holding the grip portion can be reduced, the work can be performed efficiently.
(2) The auxiliary root portion 26C is formed closer to the suction side cap portion 21 than the first root portion 25B, and is formed at a position opposite to the bolt insertion portion 23 in the periphery of the suction side cap portion 21. Thus, when the seal cap 20 is pulled out, a pulling load is easily applied to the suction side cap portion 21. Therefore, the suction side cap portion 21 can be easily detached from the suction hole 13 by applying a pulling force to the auxiliary gripping portion 26.
(3) Since the distance K1 between the first root portion 25B and the bolt insertion portion 23 is set to be shorter than the distance K2 between the first root portion 25B and the discharge-side cap portion 22, the first grip portion 25 is When a force is applied in the upward pulling direction, a pulling load is applied with the connecting portions A1 and A2 of the first base portion 25B and the base portion 27 as operating points, and the bolt protection portion 24 can be easily pulled in the axial direction of the stud bolt 15. It has become. In addition, since the first root portion 25B is provided at a portion between the discharge side cap portion 22 and the bolt protection portion 24, when a force is applied in a direction in which the first gripping portion 25 is lifted upward, the first root portion 25B is discharged. The side cap portion 22 can be easily detached from the discharge hole 14.
(4) Since the linear distance D1 is set to be longer than the length D2 from the end surface 12A to the tip of the stud bolt 15, the first gripping portion 25 is prevented from interfering with the stud bolt 15.
(5) Although the suction hole 13 and the discharge hole 14 are provided in the connecting portion 12 of the compressor 10 with the stud bolt 15 interposed therebetween, the suction hole 13 and the discharge are made with one seal cap 20 without using two seal caps. The hole 14 is closed, and the stud bolt 15 is inserted into the bolt insertion portion 23 of the seal cap 20. In the process of pulling out the seal cap 20, the discharge-side cap portion 21 is removed from the discharge hole 14 in a state where the suction-side cap portion 21 is first removed and contact between the detached suction-side cap portion 21 and the stud bolt 15 is avoided. The bolt protection part 24 is pulled out in the axial direction of the stud bolt 15. Therefore, the suction hole 13 and the discharge hole 14 can be closed with one seal cap 20, and the seal cap 20 can be reliably detached from the compressor 10.
(6) Since the bolt protector 24 covers the stud bolt 15 when the seal cap 20 is attached to the connecting portion 12, the stud bolt 15 is protected when the seal cap 20 is attached to the connecting portion 12. Can do.
(7) Since the first grip portion 25 is formed by forming the notches 28 inside the ribs 27B in the base portion 27, the structure has a strong strength against the pulling load when the seal cap 20 is pulled out. .
(8) With respect to the outer diameter dimension of the stud bolt 15, the inner diameter dimension of the bolt protection part 24 covering the periphery thereof is made larger so that a predetermined gap is formed. For this reason, when the stud bolt 15 is screwed into the connecting portion 12 after the seal cap 20 is attached to the connecting portion 12 of the compressor 10, a tool or the like is put in the gap between the stud bolt 15 and the bolt protecting portion 24. It is easy and work efficiency can be improved.

(Second Embodiment)
Next, a seal cap according to the second embodiment will be described.
The seal cap according to the second embodiment is provided with a second gripping portion in addition to the first gripping portion 25 in the first embodiment.
Therefore, here, for convenience of explanation, some of the reference numerals used in the previous explanation are used in common, explanation of common configurations is omitted, and only the changed parts are explained.

  As shown in FIGS. 5A and 5B, the seal cap 40 includes a suction side cap portion 21, a discharge side cap portion 22, a bolt protection portion 24, a first gripping portion 25, and a second gripping portion. A grip 41 is provided. Further, the seal cap 40 includes a base portion 27 that integrally connects the suction side cap portion 21, the discharge side cap portion 22, the bolt protection portion 24, the first grip portion 25, and the second grip portion 41. In the second embodiment, the auxiliary gripping portion 26 in the first embodiment is not provided.

As shown in FIG. 5A, in this embodiment, a cut 42 is formed around the suction side cap portion 21 in an inner range surrounded by the ribs 27 </ b> B of the base portion 27. The cut 42 includes a first cut part 42A and a second cut part 42B having a larger cut area than the first cut part 42A. The cut 42 includes two ends T1 and T2 on the bolt insertion portion 23 side. The notch 42 is formed along the inner peripheral side of the rib 27B, starting from one end T1 and ending at the other end T2.
The end portions T1 and T2 are perpendicular to an imaginary straight line L1 that connects the center of the suction side cap portion 21 and the center of the bolt insertion portion 23, and pass through a virtual straight line L2 that passes through the center of the bolt insertion portion 23 and is parallel to the end surface 12A. When pulled, it is positioned closer to the suction side cap portion 21 than the virtual straight line L2 and is symmetric with respect to the virtual straight line L1.

As shown in FIG. 5A, the first grip portion 25 is formed around the notch 42. The first grip portion 25 includes a pair of first root portions 25B connected to the base portion 27, and a first handle portion 25A formed extending from the first root portion 25B so as to be separated from the base portion 27. I have. The first grip portion 25 has a hollow annular shape.
If the connecting portions of the first root portion 25B and the base portion 27 are A1 and A2, the connecting portions A1 and A2 are located adjacent to the end portions T1 and T2, and the first portion is the same as in the first embodiment. The one grip portion 25 is formed so as to be bendable with the connecting portions A1 and A2 as fulcrums. Further, when a force in the pulling direction is applied to the first gripping portion 25, the connecting portions A <b> 1 and A <b> 2 serve as operating points, and a pulling load acts on the seal cap 40.
The distance between the first root portion 25B and the bolt insertion portion 23 is set to be shorter than the distance between the first root portion 25B and the suction side cap portion 21, and the first root portion 25B is connected to the suction side cap portion 21. It is provided at a site between the bolt protection part 24. For this reason, when the seal cap 40 is pulled out, the bolt protecting portion 24 can be easily pulled out in the axial direction of the stud bolt 15, and the suction side cap portion 21 can be easily detached from the suction hole 13.

As shown in FIG. 5A, in the inner range surrounded by the ribs 27B of the base portion 27,
A cut 43 is formed around the discharge-side cap portion 22. The cut 43 includes a first cut portion 43A and a second cut portion 43B having a larger cut area than the first cut portion 43A. The notch 43 includes two end portions S1 and S2 on the bolt insertion portion 23 side. The notch 43 is formed along the inner peripheral side of the rib 27B, starting from one end S1 and ending at the other end S2.
The ends S1 and S2 are perpendicular to an imaginary straight line L1 that connects the center of the discharge-side cap part 22 and the center of the bolt insertion part 23, and pass through a virtual straight line L2 that passes through the center of the bolt insertion part 23 and is parallel to the end surface 12A. When pulled, it is located on the discharge side cap portion 22 side from the virtual straight line L2 and is symmetric with respect to the virtual straight line L1.

As shown in FIG. 5A, a second grip 41 is formed around the notch 43. The second grip portion 41 includes a pair of second root portions 41B connected to the base portion 27, and a second handle portion 41A formed extending from the second root portion 41B so as to be separated from the base portion 27. I have. The second grip portion 41 has a hollow annular shape. The second grip 41 is for facilitating extraction of the seal cap 40 attached to the connecting portion 12 in the axial direction of the stud bolt 15.
The root portion 41 </ b> B has an inwardly curved shape and is connected to the base portion 27. If the connecting portions of the base portion 41B and the base portion 27 are C1 and C2, the connecting portions C1 and C2 are located at positions adjacent to the ends S1 and S2, and the second gripping portion 41 is connected to the connecting portions C1 and C2. It is formed to be bendable with C2 as a fulcrum. Further, when a force in the pulling direction is applied to the second gripping portion 41, the connecting portions C <b> 1 and C <b> 2 serve as operating points, and a pulling load acts on the seal cap 40.
The distance between the second root portion 41B and the bolt insertion portion 23 is set to be shorter than the distance between the second root portion 41B and the discharge side cap portion 22, and the second root portion 41B is connected to the discharge side cap portion 22. It is provided at a site between the bolt protection part 24. For this reason, when the seal cap 40 is pulled out, the bolt protection part 24 can be easily pulled out in the axial direction of the stud bolt 15, and the discharge side cap part 22 can be easily detached from the discharge hole 14.

If the position farthest from the bolt insertion portion 23 in the handle portion 41A is the farthest point R1, the farthest point R1 corresponds to the intersection of the virtual straight line L1 and the inner peripheral end of the handle portion 41A.
Here, a virtual straight line F2 connecting the end portions S1 and S2 of the notch 43 is considered, and a straight line distance between the virtual straight line F2 and the farthest point R1 is D3. The linear distance D3 is set to be longer than the length D2 (see FIG. 2) from the end face 12A to the tip of the stud bolt 15. Since the linear distance D3 is set to be longer than the length D2 from the end surface 12A to the tip of the stud bolt 15, interference between the second gripping portion 41 and the stud bolt 15 is avoided when the seal cap 40 is pulled out. Is possible. In this embodiment, the first gripping portion 25 and the second gripping portion 41 have been described as being symmetrical with respect to the virtual straight line L2 passing through the center of the bolt insertion portion 23. The shape may be different from the shape of the first grip portion 25.

Thus, in the second embodiment, the seal cap 40 is provided with two gripping portions, the first gripping portion 25 and the second gripping portion 41, and the distance between the first root portion 25B and the bolt insertion portion 23. Is set to be shorter than the distance between the first root portion 25B and the suction side cap portion 21, and the first root portion 25B is provided at a portion between the suction side cap portion 21 and the bolt protection portion 24. Yes. Further, the distance between the second root portion 41B and the bolt insertion portion 23 is set to be shorter than the distance between the second root portion 41B and the discharge side cap portion 22, and the second root portion 41B is the discharge side cap portion. It is provided in a part between 22 and the bolt protection part 24. Therefore, by applying force in the direction in which the first handle portion 25A and the second handle portion 41A are simultaneously grasped and pulled out, the suction side cap portion 21 and the discharge side cap portion 22 can be easily detached, and the bolt insertion The portion 23 can be pulled out in the axial direction of the stud bolt 15, and contact between the detached suction side cap portion 21 and discharge side cap portion 22 and the stud bolt 15 can be avoided. Therefore, as compared with a seal cap having only the first gripping portion 25, the pulling load can be distributed to the first gripping portion 25 and the second gripping portion 41, so that the durability strength of the seal cap 40 can be improved.
Other functions and effects are the same as the functions and effects (4) to (8) in the first embodiment, and a description thereof will be omitted.

(Third embodiment)
Next, a seal cap according to a third embodiment will be described.
The seal cap according to the third embodiment has a shape that does not include the discharge-side cap portion 22 and the auxiliary gripping portion 26 in the first embodiment.
Therefore, here, for convenience of explanation, some of the reference numerals used in the previous explanation are used in common, explanation of common configurations is omitted, and only the changed parts are explained.

  As shown in FIGS. 6A and 6B, the seal cap 50 includes a suction side cap portion 21, a bolt protection portion 24, a bolt insertion portion 23, and a first grip portion 25. Furthermore, the seal cap 50 has a base portion 27 that integrally connects the suction-side cap portion 21, the bolt protection portion 24, and the first grip portion 25. In the third embodiment, the auxiliary gripping portion 26 in the first embodiment is not provided.

As shown in FIG. 6A, in this embodiment, a cut 51 is formed around the suction side cap portion 21 in an inner range surrounded by the ribs 27 </ b> B of the base portion 27. The notch 51 includes a first notch 51A and a second notch 51B having a larger notch area than the first notch 51A. The cut 51 includes two ends T1 and T2 on the bolt insertion part 23 side. The notch 51 is formed along the inner peripheral side of the rib 27B, starting from one end T1 and ending at the other end T2.
The end portions T1 and T2 are perpendicular to a straight line L1 connecting the center of the suction side cap portion 21 and the center of the bolt insertion portion 23, pass through the center of the bolt insertion portion 23, and draw a virtual straight line L2 parallel to the end surface 12A. Is located closer to the suction side cap portion 21 than the virtual straight line L2 and is symmetric with respect to the virtual straight line L1.

As shown in FIG. 6A, a first grip portion 25 is formed around the notch 51. The first grip portion 25 includes a pair of first root portions 25B connected to the base portion 27, and a first handle portion 25A formed extending from the first root portion 25B so as to be separated from the base portion 27. I have. The first grip portion 25 has a hollow annular shape.
If the connecting portions of the first root portion 25B and the base portion 27 are A1 and A2, the connecting portions A1 and A2 are located adjacent to the end portions T1 and T2, and the first portion is the same as in the first embodiment. The one grip portion 25 is formed so as to be bendable with the connecting portions A1 and A2 as fulcrums. Further, when a force in the pulling direction is applied to the first gripping portion 25, the connecting portions A <b> 1 and A <b> 2 serve as operating points, and a pulling load acts on the seal cap 50.
The distance between the first root portion 25B and the bolt insertion portion 23 is set to be shorter than the distance between the first root portion 25B and the suction side cap portion 21, and the first root portion 25B is connected to the suction side cap portion 21. It is provided at a site between the bolt protection part 24. For this reason, when the seal cap 50 is pulled out, the bolt protection part 24 can be easily pulled out in the axial direction of the stud bolt 15, and the suction side cap part 21 can be easily detached from the suction hole 13.
Similar to the first embodiment, the linear distance D1 between the imaginary straight line F1 connecting the farthest point R of the first handle portion 25A and the end portions T1 and T2 of the notch 42 is from the end surface 12A to the tip of the stud bolt 15. It is set longer than the length D2 (see FIG. 2).

Thus, in the third embodiment, the seal cap 50 is provided with only the first gripping portion 25, and the distance between the first root portion 25B and the bolt insertion portion 23 is the same as the first root portion 25B and the suction side. While being set shorter than the distance from the cap portion 21, the first root portion 25 </ b> B is provided at a portion between the suction side cap portion 21 and the bolt protection portion 24. Accordingly, by applying force in the direction in which the first handle portion 25A is gripped and pulled out, the suction side cap portion 21 can be easily detached and the bolt protection portion 24 can be pulled out in the axial direction of the stud bolt 15. This makes it possible to avoid contact between the separated suction side cap portion 21 and the stud bolt 15.
Other functions and effects are the same as the functions and effects (4) and (6) to (8) in the first embodiment, and a description thereof will be omitted.

The seal cap according to the above-described embodiment shows one embodiment of the present invention, and the present invention is not limited to the above-described embodiment, and is within the scope of the gist of the invention as described below. Various changes can be made.
In the first and second embodiments, it has been described that the auxiliary gripping portion 26 or the second gripping portion 41 is provided in addition to the first gripping portion 25, but in this case, the first root portion 25B and the base portion 27 The positions of the connecting portions A1 and A2 are different depending on the presence or absence of the auxiliary gripping portion 26 or the second gripping portion 41. That is, when the auxiliary gripping portion 26 is provided (first embodiment), the positions of the connecting portions A1 and A2 are on the discharge side cap portion 22 side with respect to the virtual straight line L2 passing through the center of the bolt insertion portion 23. When the second grip 41 is provided (second embodiment), the positions of the connecting portions A1 and A2 are sucked with respect to an imaginary straight line L2 passing through the center of the bolt insertion portion 23. It is preferably provided on the side cap portion 21 side. When neither the auxiliary gripping portion 26 nor the second gripping portion 41 is provided, the positions of the connecting portions A1 and A2 are preferably provided on an imaginary straight line L2 passing through the center of the bolt insertion portion 23. This is to make it easier to separate the suction-side cap portion 21 and the discharge-side cap portion 22 when the seal cap is pulled out, and at the same time, to easily pull out the bolt protection portion 24 in the axial direction of the stud bolt 15. .
In the first embodiment, it has been described that the two gripping portions of the first gripping portion 25 and the auxiliary gripping portion 26 are provided on the suction side cap portion 21 side with respect to the bolt insertion portion 23, but suction is performed on the bolt insertion portion 23. You may provide in the position different from the side cap part 21 side.
In the second embodiment, the first gripping portion 25 is provided on the suction side cap portion 21 side and the second gripping portion 41 is provided on the discharge side cap portion 22 side. The two gripping portions of the gripping portion 41 may be provided together on either the suction side cap portion 21 side or the discharge side cap portion 22 side with respect to the bolt insertion portion 23.
In the third embodiment, it has been described that only the first grip portion 25 is provided, but an auxiliary grip portion 26 may be provided in addition to the first grip portion 25.
In the third embodiment, the first grip portion 25 is described as being provided on the suction side cap portion 21 side, but may be provided on the side opposite to the suction side cap portion 21 side with respect to the bolt insertion portion 23.
○ As shown in FIGS. 7A and 7B, the first handle portion 61A and the second handle portion 62A are bent in a direction away from the end surface 12A toward the distal end side with respect to the end surface 12A of the connection portion 12. May be. In this case, the handle 61A of the first grip 61 and the handle 62A of the second grip 62 can be easily gripped.
In the first embodiment, it has been described that the circular hole 26A through which the finger can be inserted is formed in the auxiliary gripping part 26. However, as shown in FIG. 8A, the finger is passed through the auxiliary gripping part 71. When the auxiliary gripping portion 71 is gripped by forming a hole 72 that is so small that it cannot be gripped, the hole 72 may be gripped so as to be sandwiched between the fingertips in the vertical direction. This hole 72 is for making it easy to lock the grip portion with the fingertip. Further, as shown in FIG. 8B, the auxiliary gripping portion 81 may be formed in a tongue shape. In any case, after the first gripping portion 25 and the auxiliary gripping portion 71 or the first gripping portion 25 and the auxiliary gripping portion 81 are gripped at the same time and the suction side cap portion 21 is detached, Since the operation | movement which pulls out a finger from the circular hole 26A is unnecessary when holding, it can carry out more smoothly.
In the above embodiment, it has been described that the centers of the suction hole 13, the stud bolt 15 and the discharge hole 14 are arranged so as to pass on the virtual straight line L. However, the centers of the suction hole, the stud bolt and the discharge hole are described. May be in a positional relationship in which they are displaced from each other. In this case, the seal cap may have a shape in which the suction side cap portion, the bolt insertion hole, and the discharge side cap portion are displaced from each other according to the positions of the suction hole, the stud bolt, and the discharge hole.
In the above embodiment, an example in which a seal cap is attached to a connection portion formed on the housing of the compressor is shown, but the connection portion is not necessarily formed on the housing, for example, provided on the housing. The connecting portion may be formed on another member.
In the above embodiment, the first gripping portion and the second gripping portion have been described as having a hollow annular shape, but the first gripping portion and the second gripping portion are easily gripped by the operator when the seal cap is pulled out. Any shape may be used, and the shape is not particularly limited.
In the above embodiment, the rib is provided along the outer peripheral edge of the seal cap, but it is not essential to provide the rib. For example, a seal cap without a rib may be used. Moreover, although it demonstrated that the holding | grip part was formed by notching inside a rib, you may connect the holding | grip part formed separately from the base | substrate part of a seal cap.
In the above embodiment, the straight distances D1 and D3 between the straight lines connecting the farthest points R and R1 of the handle and the cut ends T1 and T2 (or S1 and S2) are from the end face 12A to the stud bolt 15. Although it is assumed that the length is set to be longer than the length D2 to the tip, this is not limited depending on the material of the seal cap. When the material of the seal cap is a material having a sufficient elongation allowance, for example, a rubber-based material, the linear distance between these two points may be set shorter than the length from the end surface to the tip of the stud bolt.
In the above embodiment, the inner diameter dimension of the bolt protection part 24 is formed larger than the inner diameter dimension of the bolt insertion part 23. However, both may have the same diameter and may have different hole shapes.

DESCRIPTION OF SYMBOLS 10 Compressor 12 Connection part 12A End surface 13 Suction hole (1st flow-path hole)
14 Discharge hole (second flow path hole)
15 Stud bolt 20, 40, 50, 60 Seal cap 21 Suction side cap part (first cap part)
22 Discharge side cap (second cap)
23 Bolt insertion part 24 Bolt protection part 25 1st holding part 25A 1st handle part 25B 1st root part 26 Auxiliary holding part (auxiliary holding part)
26B Auxiliary handle portion 26C Auxiliary base portion 27 Base portions 28, 42, 51 Notch 41 Second gripping portion (auxiliary gripping portion)
41A Second handle portion 41B Second root portion 43 Cuts A1, A2 Connection portions B1, B2 between the first gripping portion and the base portion Connection portions C1, C2 between the auxiliary gripping portion and the base portion The second gripping portion and the base portion Connecting part R, R1 farthest point

Claims (10)

Used in a compressor comprising a connecting portion for connecting a pipe through which a fluid flows, a first flow passage hole opened in an end face of the connecting portion, and a stud bolt standing on the end face of the connecting portion;
A first cap part that is made of an elastically deformable material and closes the first flow path hole, a bolt insertion part through which the stud bolt is inserted, and the first cap part and the bolt insertion part are integrated. A seal cap including a base portion coupled to the base portion and a grippable first grip portion coupled to the base portion,
The first gripping portion is connected to the base portion by being separated from the base portion, and a force application point when a pulling force is applied to the first handle portion. And a first root portion,
The seal cap, wherein a distance between the first root portion and the bolt insertion portion is set shorter than a distance between the first root portion and the first cap portion. The compressor includes a second flow path hole formed in the end face,
The stud bolt is erected between the first flow path hole and the second flow path hole,
A second cap portion for closing the second flow path hole is integrally connected to the base portion;
The seal cap according to claim 1, wherein the bolt insertion portion is formed between the first cap portion and the second cap portion. Having a second gripping part integrally connected to the base part;
The second gripping portion includes a second handle portion formed away from the base portion, and a force application point when a force in a pulling direction is applied to the second handle portion and connected to the base portion. A second root portion,
The seal cap according to claim 2, wherein a distance between the second root portion and the bolt insertion portion is set to be shorter than a distance between the second root portion and the second cap portion. Having an auxiliary gripping part integrally connected to the base part;
The auxiliary gripping part includes an auxiliary base part connected to the base part,
The seal cap according to claim 1, wherein the auxiliary root portion is formed closer to the first cap portion than the first root portion.   The first gripping part is disposed on the first cap part side with respect to the bolt insertion part, and the second gripping part is disposed on the second cap part side with respect to the bolt insertion part. The seal cap according to claim 3.   The seal cap according to claim 4, wherein the first grip portion and the auxiliary grip portion are disposed on the first cap portion side with respect to the bolt insertion portion.   The first gripping portion has a hollow annular shape, and a linear distance between two points from the bolt insertion portion to the position farthest from the bolt insertion portion in the first gripping portion is a length from the end surface to the tip of the stud bolt. The seal cap according to any one of claims 1 to 6, wherein the seal cap is set longer than the length.   The seal according to any one of claims 1 to 7, wherein a bolt protection portion that covers an outer peripheral surface of the stud bolt is integrally formed at a position corresponding to the bolt insertion portion of the base portion. cap.   The seal cap according to any one of claims 1 to 8, wherein the first handle portion is formed to be bent in a direction away from the end surface toward the distal end side with respect to an end surface of the connection portion.   4. The seal cap according to claim 3, wherein the second handle portion is formed to be bent in a direction away from the end surface toward the distal end side with respect to the end surface of the connection portion.

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