JP2017089719A - Valve and manufacturing method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide valve of which productivity can be increased and a manufacturing method of the same.SOLUTION: A valve 10 of this invention is constructed in such a way that a supporting sleeve 50 for supporting a valve body 20 for opening or closing a valve hole 31 in a linear movable manner is fixed to a fixed base 30 where the valve hole 31 communicated with a valve installing hole 92 is passed through and formed. In order to manufacture the valve 10, a flange part 55 expanding from one end part of the supporting sleeve 50 toward outside is formed in advance and at the same time both an outer protrusion 35 and an inner protrusion 36 raised up from the fixed base 30 to hold a flange part 55 in a radial direction of the supporting sleeve 50 when the flange part 55 is applied to the fixed base 30 from a base end side in a fixing direction. Then, the flange part 55 is inserted into a clearance between the outer protrusion 35 and the inner protrusion 36, the outer protrusion part 35 is caulked inwardly and the supporting sleeve 50 is fixed to the fixed base 30 under a state in which the flange part 55 is applied to the fixed base 30.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a valve in which a support sleeve that supports a valve body so as to be capable of direct movement is fixed to a fixed base having a valve hole communicating with the valve mounting hole, and a method for manufacturing the same.

  Conventionally, as this type of valve, the flange portion that protrudes outward from one end portion of the support sleeve is directed to the base proximal end surface that faces the proximal end side in the mounting direction of the fixed base, and is outside the flange portion of the base proximal end surface. There is known a structure in which an outer protrusion whose front end portion is bent inward and protrudes from this portion is engaged with a flange portion (see, for example, Patent Document 1). In such a valve, a standing wall is provided outside the portion of the base base end face where the flange portion is addressed, and the standing wall is caulked inward with the flange portion addressed to the base base end surface. can get.

JP 2014-114895 A (paragraph [0024], FIG. 1)

  However, in the conventional valve described above, when the tip of the outer protrusion is bent, if the side wall of the support sleeve is recessed inward due to the stress from the outer protrusion, the valve body is moved within the support sleeve. This will result in defective products that are difficult to handle. For this reason, the conventional valve has a problem of low productivity.

  This invention is made | formed in view of the said situation, and aims at provision of the valve | bulb which can improve productivity, and its manufacturing method.

  In order to achieve the above object, the invention according to claim 1 is characterized in that a valve hole (31) that is mounted in the valve mounting hole (92) of the fluid device (90) and communicates with the valve mounting hole (92) is formed through. In the valve (10) in which a support sleeve (50) that supports the valve body (20) that opens and closes the valve hole (31) is fixed to the fixed base (30), the support sleeve (50) ) Projecting outward from one end of the support base, and being attached to the fixed base (30) and a flange portion (55) addressed to the fixed base (30) from the base end side in the mounting direction. ) In the radial direction of the flange portion (55), and an outer protrusion (35) and an inner protrusion (36) disposed on the inner side, and the outer protrusion (35) is in the mounting direction. Before the base end of the part is bent inward Engage flange section (55), said inner projection (36), the is the outer projection (35) valve sandwiching the supporting sleeve (50) between (10).

  The invention according to claim 2 is the valve according to claim 1, wherein the outer protrusion (35) and the inner protrusion (36) are arranged over the entire circumferential direction of the support sleeve (50). 10).

  According to a third aspect of the present invention, there is provided a valve body for opening and closing the valve hole (31) in a fixed base (30) in which a valve hole (31) communicating with the valve mounting hole (92) of the fluid device (90) is formed. In the manufacturing method of the valve (10) for fixing the support sleeve (50) that supports the (20) so as to be linearly movable, a flange portion (55) that projects outward from one end of the support sleeve (50) is formed. In addition, when the flange portion (55) is applied to the fixed base (30) from the base end side in the mounting direction, an outer protrusion that sandwiches the flange portion (55) in the radial direction of the support sleeve (50). When the support sleeve (50) is fixed to the fixed base (30), the outer protrusion (35) and the inner protrusion (36) are provided. The flange portion (5 ) Inserted through a manufacturing method of the fixing base (the caulked outer projection (35) inside the valve the flange portion (55) destined wants state 30) (10).

  The invention according to claim 4 is the valve according to claim 3, wherein the outer protrusion (35) and the inner protrusion (36) are arranged over the entire circumferential direction of the support sleeve (50). 10).

[Invention of Claim 1]
In the valve (10) according to the present invention, the flange portion (55) of the support sleeve (50) is addressed to the fixed base (30) from the base end side in the mounting direction, and is provided on the fixed base (30). The support sleeve (50) is fixed to the fixed base (30) by the outer protrusion (35) whose inner end portion in the mounting direction is bent inwardly locked to the flange portion (55). Here, in the present invention, the inner protrusion (36) provided on the fixed base (30) and disposed inside the flange portion (55) in the radial direction of the support sleeve (50) is the outer protrusion (35). The support sleeve (50) is sandwiched between the support sleeve (50) and the support sleeve (50) from being stressed by the outer protrusion (35) and being recessed inward. As a result, the movement of the valve body (20) supported by the support sleeve (50) is stabilized, and the productivity of the valve (10) can be increased.

[Invention of claim 2]
In the present invention, since the outer protrusion (35) is arranged over the entire circumferential direction of the support sleeve (50), the fixing of the support sleeve (50) can be stabilized. Moreover, since the inner protrusion (36) is also arranged over the entire circumferential direction of the support sleeve (50), the support sleeve (50) may be recessed inward over the entire circumferential direction of the support sleeve (50). It can be suppressed.

[Invention of claim 3]
In the manufacturing method of the valve (10) according to the present invention, the flange portion (55) of the support sleeve (50) between the outer protrusion (35) and the inner protrusion (36) formed on the fixed base (30). , And the outer protrusion (35) is caulked inward with the flange portion (55) addressed to the fixed base (30) from the base end side in the mounting direction. Then, the caulked outer protrusion (35) is engaged with the flange portion (55), and the support sleeve (50) is fixed to the fixed base (30). Here, in the present invention, since the support sleeve (50) is sandwiched between the inner protrusion (36) and the outer protrusion (35), when the outer protrusion (35) is caulked, the support sleeve (50) ) Is restrained from receiving a stress from the outer protrusion (35) and being recessed inward. As a result, the movement of the valve body (20) supported by the support sleeve (50) is stabilized, and the productivity of the valve (10) can be increased.

[Invention of claim 4]
In the present invention, the outer protrusion (35) is arranged over the entire circumferential direction of the support sleeve (50), so that the fixing of the support sleeve is stabilized. Further, since the inner protrusion (36) is also arranged over the entire circumferential direction of the support sleeve (50), when the outer protrusion (35) is caulked, it extends over the entire circumferential direction of the support sleeve (50). It is possible to prevent the support sleeve (50) from being recessed inward.

1 is a side sectional view of a valve according to an embodiment of the present invention. Side sectional view of the valve in the open state (A) View of the fixed base viewed from the proximal end side, (B) View of the support sleeve viewed from the distal end side Side sectional view of the support sleeve and the fixed base before being fixed to the fixed base (A) Side sectional view around the flange before the outer protrusion is crimped, (B) Side sectional view around the flange after the outer protrusion is crimped Side sectional view of inner protrusion according to modification

  Hereinafter, an embodiment in which the present invention is applied to a check valve will be described with reference to FIGS. As shown in FIG. 1, the valve 10 of the present embodiment is mounted in a valve mounting hole 92 that constitutes a part of a compressed refrigerant flow path 91 formed in a compressor 90 of a car air conditioner. The valve mounting hole 92 includes a small-diameter portion 92A and a large-diameter portion 92B having a stepped diameter from its end, and the valve 10 is mounted from the large-diameter portion 92B side. In the present embodiment, the compressor 90 corresponds to the “fluid device” of the present invention.

  The valve 10 includes a fixed base 30 fixed to the valve mounting hole 92 on the distal end side in the mounting direction, and has a structure in which a support sleeve 50 is fixed to the base end portion of the fixed base 30. Hereinafter, in the compressed refrigerant channel 91, the distal end side in the mounting direction of the valve 10 is appropriately referred to as “upstream side”, and the proximal end side in the mounting direction is appropriately referred to as “downstream side”.

  A valve hole 31 communicating with the valve mounting hole 92 is formed through the central portion of the fixed base 30. And the opening edge part of the valve hole 31 in the base base end surface 30M which faces the base end side of a mounting direction among the fixed bases 30 serves as a valve seat 33 on which a valve body 20 described later is seated. An O-ring 32 that seals between the fixed base 30 and the inner peripheral surface of the valve mounting hole 92 is mounted on the outer peripheral surface of the fixed base 30.

  The support sleeve 50 has a structure in which the base end opening of the cylindrical wall 51 is closed by the base end wall 52. An annular flange portion 55 projects outward from the opening edge of the cylindrical wall 51 (see FIG. 3B), and the flange portion 55 is addressed to the fixed base 30 from the proximal end side. Note that a plurality of (for example, four) side outflow holes 60 are formed near the tip of the cylindrical wall 51. The plurality of side outflow holes 60 are arranged in the circumferential direction of the cylindrical wall 51.

  As shown in FIGS. 1 and 2, the support sleeve 50 accommodates the valve body 20 that opens and closes the valve hole 31 so as to be capable of linear movement. The valve body 20 has a structure in which the distal end opening of the cylindrical wall 21 is closed by the distal end wall 22.

  A compression coil spring 54 that urges the valve body 20 toward the valve seat 33 is provided between the distal end wall 22 of the valve body 20 and the proximal end wall 52 of the support sleeve 50. Note that the compression coil spring 54 is positioned by a positioning projection 53 formed by projecting the center portion of the base end wall 52 toward the distal end side. In addition, an introduction hole 53 </ b> A for securing the back pressure of the valve body 20 by introducing the refrigerant into the cylindrical wall 21 of the valve body 20 from the downstream side of the compressed refrigerant flow path 91 is provided at the center of the positioning protrusion 53. Is formed.

  As shown in FIG. 1, when the valve 10 is in the closed state, the valve body 20 is pressed against the valve seat 33 by the resilient force and back pressure of the compression coil spring 54. In the valve-closed state, the primary pressure applied to the valve body 20 from the valve hole 31 side (that is, the upstream side of the compressed refrigerant channel 91) is opposite to the valve hole 31 (that is, downstream of the compressed refrigerant channel 91). 2), the valve body 20 is supported against the urging force of the compression coil spring 54 as shown in the change from FIG. 1 to FIG. It moves to the base end side of the sleeve 50, and the valve 10 is opened.

  As shown in FIG. 2, when the valve 10 is opened, the refrigerant that has flowed into the support sleeve 50 from the valve hole 31 side is discharged from the side outflow hole 60. In the example of the present embodiment, a guide protrusion 22 </ b> T for guiding the refrigerant flowing from the valve hole 31 to the side outflow hole 60 of the support sleeve 50 is provided at the center of the tip wall 22 of the valve body 20. ing. The guide protrusion 22T has a taper shape with the tip side narrowed. In addition, the structure which does not have the guide protrusion 22T may be sufficient as the valve body 20. FIG.

  The fixing structure of the support sleeve 50 and the fixing base 30 in the valve 10 is as follows. That is, as shown in FIG. 1, the fixed base 30 is provided with an outer protrusion 35 that is disposed outside the flange portion 55 in the radial direction of the support sleeve 50. The outer protrusion 35 has a shape in which a portion near the tip is bent inward (that is, on the support sleeve 50 side) and is locked to the flange portion 55. The support sleeve 50 is fixed to the fixed base 30 by the engagement between the outer protrusion 35 and the flange 55. In detail, the outer protrusion 35 is formed in an annular shape (see FIG. 3A) and is locked to the flange portion 55 over the entire circumferential direction. As a result, the fixing of the support sleeve 50 is stabilized over the entire circumferential direction of the support sleeve 50.

  Here, when the cylindrical wall 51 of the support sleeve 50 receives the stress from the outer protrusion 35 and is recessed inward, there arises a problem that it becomes difficult to move the valve body 20 supported in the support sleeve 50. In order to prevent such a problem, the valve 10 of the present embodiment has a configuration described below.

  That is, the valve 10 of the present embodiment is provided with the inner protrusion 36 that protrudes into the flange portion 55 on the fixed base 30. Specifically, a circular groove 37 is formed on the base base end face 30M of the fixed base 30, and the outer peripheral portion of the circular groove 37 is an outer protrusion 35. A portion constituting the peripheral portion is an inner protrusion 36. The inner protrusion 36 sandwiches the cylindrical wall 51 of the support sleeve 50 with the outer protrusion 35. Thereby, even if the cylindrical wall 51 receives stress from the outer protrusion 35, the support sleeve 50 is suppressed from being recessed inward.

  Specifically, as shown in FIGS. 1 and 3A, the inner protrusion 36 is fitted into the support sleeve 50 in a columnar shape. A central protrusion 38 further protrudes from the center of the base end face of the inner protrusion 36, and this central protrusion 38 constitutes the valve seat 33 described above.

  This completes the description of the structure of the valve 10 of the present embodiment. Next, a method for manufacturing the valve 10 of the present embodiment will be described.

  In manufacturing the valve 10, first, the valve body 20, the fixed base 30 and the support sleeve 50 are prepared. The valve body 20 is obtained by metal cutting or forging or sheet metal drawing, the fixed base 30 is obtained by metal cutting or forging, and the support sleeve 50 is obtained by metal cutting or sheet metal. Obtained by drawing. As shown in FIG. 4, the fixed base 30 prepared at this time is provided with an outer protrusion 35 that rises linearly toward the base end side. The outer protrusion 35 is formed in an annular shape.

  When the valve body 20, the fixed base 30, and the support sleeve 50 are prepared, the compression coil spring 54 and the valve body 20 are set in the support sleeve 50 in order. At this time, the compression coil spring 54 is positioned by the positioning projection 53.

  Next, the support sleeve 50 is inserted into the circular groove 37 formed between the inner protrusion 36 and the outer protrusion 35 in a state where the base base end face 30M of the fixed base 30 and the tip of the support sleeve 50 are abutted. The flange portion 55 is directed to the fixed base 30 (specifically, the groove bottom surface of the circular groove 37) (see FIGS. 4 and 5A). At this time, the inner protrusion 36 is fitted to the support sleeve 50.

  Next, as shown in the change from FIG. 5A to FIG. 5B, the tip portion of the outer protrusion 35 is caulked inward by the caulking jig J. Then, the outer protrusion 35 is locked to the flange portion 55, and the support sleeve 50 is fixed to the fixed base 30. Thus, the valve 10 shown in FIG. 1 is completed.

  This completes the description of the method for manufacturing the valve 10 of the present embodiment. Next, the effect of the valve 10 and the manufacturing method thereof will be described.

  In the manufacturing method of the valve 10 of this embodiment, the flange portion 55 of the support sleeve 50 is inserted between the outer protrusion 35 and the inner protrusion 36 formed on the fixed base 30, and the flange portion 55 is attached to the fixed base 30. The outer protrusion 35 is caulked inward in the addressed state. Then, the caulked outer protrusion 35 is engaged with the flange portion 55, and the support sleeve 50 is fixed to the fixed base 30. Here, in this embodiment, since the inner protrusion 36 sandwiches the support sleeve 50 between the outer protrusion 35, the support sleeve 50 applies stress from the outer protrusion 35 when the outer protrusion 35 is caulked. It is suppressed that it receives and dents inside. As a result, the movement of the valve body 20 supported by the support sleeve 50 is stabilized, and the productivity of the valve 10 can be increased. In the valve 10 of the present embodiment, the support sleeve 50 is sandwiched between the inner protrusion 36 and the outer protrusion 35, so that the support sleeve 50 is prevented from receiving the stress from the outer protrusion 35 and being recessed inward. It is done.

  In the present embodiment, since the outer protrusion 35 extends in an annular shape over the entire circumferential direction of the support sleeve 50, the fixing of the support sleeve 50 can be stabilized. Moreover, since the inner protrusion 36 also extends in an annular shape over the entire circumferential direction of the support sleeve 50, it is possible to prevent the support sleeve 50 from being recessed inward over the entire circumferential direction of the support sleeve 50.

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various modifications are possible within the scope of the invention other than the following. It can be changed and implemented.

  (1) In the above embodiment, the example in which the present invention is applied to the check valve has been described. However, the present invention may be applied to, for example, a relief valve. The present invention is not limited to a valve for a car air conditioner.

  (2) In the above embodiment, the inner protrusion 36 is formed in a cylindrical shape, but may be formed in an annular shape as shown in FIG. In the example of FIG. 6, the central protrusion 38 constituting the valve seat 33 is arranged inside the inner protrusion 36.

  (3) In the above embodiment, the inner protrusion 36 is disposed over the entire circumferential direction of the support sleeve 50, but may be disposed at a part of the support sleeve 50 in the circumferential direction. In that case, the number of the inner side protrusions 36 may be one, and plural may be sufficient. When a plurality of inner protrusions 36 are provided, it is preferable that they are arranged at equal intervals in the circumferential direction of the support sleeve 50. In addition, this structure may be applied to the structure of said (2).

  (4) In the above-described embodiment, the outer protrusion 35 has an annular shape and is arranged over the entire circumferential direction of the support sleeve 50, but the outer protrusion 35 is arranged in the circumferential direction of the support sleeve 50. The structure arrange | positioned in multiple places in may be sufficient. At that time, the inner protrusion 36 may be arranged over the entire circumferential direction of the support sleeve 50 as in the above-described embodiment and the above-described configuration (2), or as in the above-described configuration (3). You may arrange | position in a part of circumferential direction. In addition, when the inner side protrusion 36 is arrange | positioned in a part of circumferential direction, it should just be arrange | positioned in the same circumferential position as the outer side protrusion 35. FIG.

DESCRIPTION OF SYMBOLS 10 Valve 20 Valve body 30 Fixed base 30M Base base end face 31 Valve hole 35 Outer protrusion 36 Inner protrusion 50 Support sleeve 55 Flange part 90 Compressor (fluid device)
92 Valve mounting hole

Claims (4)

The valve hole (31) is inserted into the fixed base (30) that is mounted in the valve mounting hole (92) of the fluid device (90) and has a valve hole (31) that communicates with the valve mounting hole (92). In the valve (10) to which the support sleeve (50) for supporting the valve body (20) to be opened and closed so as to be linearly movable is fixed,
A flange portion (55) projecting outward from one end portion of the support sleeve (50) and addressed to the fixed base (30) from the proximal end side in the mounting direction;
An outer protrusion (35) and an inner protrusion (36) provided on the fixed base (30) and disposed outside and inside the flange portion (55) in the radial direction of the support sleeve (50); Have
The outer protrusion (35) is bent inward at a portion near the base end in the mounting direction to be engaged with the flange portion (55),
The inner protrusion (36) is a valve (10) that sandwiches the support sleeve (50) between the inner protrusion (36) and the outer protrusion (35).   The valve (10) according to claim 1, wherein the outer protrusion (35) and the inner protrusion (36) are arranged over the entire circumferential direction of the support sleeve (50). The valve body (20) for opening and closing the valve hole (31) can be directly moved on the fixed base (30) in which the valve hole (31) communicating with the valve mounting hole (92) of the fluid device (90) is formed. In the manufacturing method of the valve (10) for fixing the support sleeve (50) to be supported by
A flange portion (55) projecting outward from one end portion of the support sleeve (50) is formed, and
An outer protrusion (35) that sandwiches the flange portion (55) in the radial direction of the support sleeve (50) when the flange portion (55) is applied to the fixed base (30) from the base end side in the mounting direction. ) And the inner protrusion (36),
In fixing the support sleeve (50) to the fixed base (30), the flange portion (55) is inserted into a gap between the outer protrusion (35) and the inner protrusion (36), A manufacturing method of the valve (10) in which the outer protrusion (35) is caulked inward with the flange portion (55) being applied to the fixed base (30).   The manufacturing method of the valve (10) according to claim 3, wherein the outer protrusion (35) and the inner protrusion (36) are arranged over the entire circumferential direction of the support sleeve (50).

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