JP2009047291A - Housing for ball joint, its manufacturing method, and ball joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a housing for ball joint which can surely fix a socket section and a linkage section while reducing manufacturing cost. <P>SOLUTION: A socket section 22 formed of a plastically deformable material is press-fitted to a linkage section 21 independent to the socket section 22. Furthermore, the linkage section 21 and the socket section 22 are fixed by deforming a rivet 46 in the state of press-fitting the socket section 22. Therefore, the manufacturing costs of a housing 17 for the ball joint can be reduced, and the linkage section 21 and the socket section 22 are surely fixed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a ball joint housing that holds a ball head inside, a manufacturing method thereof, and a ball joint.

  Conventionally, as a ball joint housing (socket) that holds the ball head of the ball stud, that is, the ball portion so as to be rotatable via a bearing seat, the entire shaft is made of a highly stretchable material that can be easily caulked. What is formed in the substantially cylindrical shape which has a caulking part in a direction edge part is known (for example, refer to patent documents 1).

  However, when the entire ball joint housing is formed of a highly stretchable material that is easy to caulk, the material cost of the highly stretchable material is high, which may increase the cost as a whole, and depending on the shape, etc. There is a risk that securing strength may be difficult.

Therefore, the outer housing body is divided into two and the inner housing body that holds the ball portion rotatably is formed of a high-stretch material that is easy to caulking, and is formed of a low-stretch material that is less likely to stretch than the high-stretch material. The structure cast into the inside of this can be considered.
JP 2004-293572 A

  However, in the configuration in which the inner housing body is cast into the outer housing body as described above, the parts to be cast are arranged inside the mold by a robot or the like. The arrangement time is added to the cycle time, which may cause the unit price to increase.

  Further, when the housing is divided into two as described above, it is desirable to securely connect the inner housing body and the outer housing body.

  The present invention has been made in view of the above points, and provides a ball joint housing capable of securely fixing an inner housing body and an outer housing body while reducing the manufacturing cost, a manufacturing method thereof, and a ball joint. For the purpose.

  The ball joint housing according to claim 1 is formed of a plastically deformable material, and is provided separately from the inner housing body that holds the ball head inside by caulking deformation, and the inner housing body. An outer housing body into which the body is press-fitted, and a fixing portion that is deformed in a state where the inner housing body is press-fitted into the outer housing body and fixes the inner housing body to the outer housing body.

  The ball joint housing according to claim 2 is the ball joint housing according to claim 1, wherein the inner housing body includes an inner insertion hole, and the outer housing body is inserted into the inner housing body in a state where the inner housing body is press-fitted. An external insertion hole that communicates with the hole is provided, and the fixing portion is a rivet that is inserted into the internal insertion hole and the external insertion hole and whose tip side is deformed.

  The ball joint housing according to claim 3 is the ball joint housing according to claim 1, wherein the outer housing body has an insertion hole at a position facing the inner housing body, and the fixing portion projects from the inner housing body. The rivet portion is inserted into the insertion hole by press-fitting the inner housing body into the outer housing body, and the tip side is deformed while being inserted into the insertion hole.

  The ball joint housing according to claim 4 is the ball joint housing according to claim 1, wherein the outer housing body is provided with a housing insertion hole, and the fixing portion is a part of the inner housing body. This is a caulking deformation portion that is inserted into the housing insertion hole by press-fitting a body into the external housing body and fixed to the peripheral edge portion of the housing insertion hole by caulking deformation.

  A ball joint according to claim 5 is a ball joint housing according to any one of claims 1 to 4, and a ball stud having a ball head rotatably held by an inner housing body of the ball joint housing. Is provided.

  According to a sixth aspect of the present invention, there is provided a ball joint housing manufacturing method comprising: an inner housing body formed of a plastically deformable material and holding a ball head therein by caulking deformation; and an outer housing body separate from the inner housing body. A press-fitting step of press-fitting, and a fixing step of fixing the inner housing body to the outer housing body by deforming the fixing portion in the press-fitted state.

  The ball joint housing manufacturing method according to claim 7 is the ball joint housing manufacturing method according to claim 6, wherein the fixing portion includes an internal insertion hole of the internal housing body and the internal housing body as an external housing body. A rivet that is inserted into the external insertion hole of the outer housing body that communicates with the internal insertion hole in a press-fitted state, and the distal end side of the rivet that is inserted into the internal insertion hole and the external insertion hole in the fixing step. The inner housing body is fixed to the outer housing body by being deformed.

  The ball joint housing manufacturing method according to claim 8 is the ball joint housing manufacturing method according to claim 6, wherein the fixing portion is a rivet portion protruding from the inner housing body, and in the fixing step, The inner housing body is fixed to the outer housing body by deforming the distal end side of the rivet portion inserted through the insertion hole by press-fitting the inner housing body into the outer housing body, outside the outer housing body. Is.

  The ball joint housing manufacturing method according to claim 9 is the ball joint housing manufacturing method according to claim 6, wherein the fixing portion is a caulking deformation portion that forms a part of the inner housing body. The caulking deformation portion inserted into the housing insertion hole by caulking the inner housing body into the outer housing body is caulked and deformed and fixed to the peripheral portion of the housing insertion hole, thereby fixing the inner housing body to the outer It is fixed to the housing body.

  According to the ball joint housing according to claim 1, the inner housing body formed of a plastically deformable material is press-fitted into the outer housing body separate from the inner housing body, and the inner housing body is press-fitted. Thus, by deforming the fixing portion to fix the inner housing body and the outer housing body, the manufacturing cost can be reduced and the inner housing body and the outer housing body can be securely fixed.

  According to the ball joint housing of the second aspect, by inserting a rivet as a fixing portion into the inner insertion hole of the inner housing body and the outer insertion hole of the outer housing body, the tip end side of the rivet is deformed. Thus, it is possible to easily realize a configuration for securely fixing the inner housing body and the outer housing body.

  According to the ball joint housing of the third aspect, the rivet portion which is a fixing portion is provided so as to protrude from the inner housing body, and the rivet portion is provided on the outer housing body in a state where the inner housing body is press-fitted into the outer housing body. The inner housing body and the outer housing can be easily and reliably fixed by deforming the leading end side of the inserted rivet portion by being inserted into the insertion hole.

  5. The ball joint housing according to claim 4, wherein the caulking deformed portion, which is a fixed portion forming a part of the inner housing body, is inserted into the outer housing body in a state where the inner housing body is press-fitted into the outer housing body. By being inserted into the hole, the caulking deformed portion that has been inserted is caulked and deformed and fixed to the peripheral portion of the housing insertion hole, so that the inner housing body and the outer housing can be easily and reliably fixed.

  According to the ball joint of the fifth aspect, by providing the ball joint housing according to any one of the first to fourth aspects, the manufacturing cost can be reduced, and the inner housing body and the outer housing body can be reduced. It can be fixed securely to improve reliability.

  According to the method for manufacturing a housing for a ball joint according to claim 6, an inner housing body formed of a plastically deformable material is press-fitted into an outer housing body separate from the inner housing body, and the inner housing body is By fixing the inner housing body and the outer housing body by deforming the fixing portion in the press-fitted state, the manufacturing cost can be reduced, and the inner housing body and the outer housing body can be securely fixed.

  According to the method for manufacturing a housing for a ball joint according to claim 7, a rivet as a fixing portion is inserted into the internal insertion hole of the internal housing body and the external insertion hole of the external housing body, and the tip side of the rivet is deformed. By doing, the structure which fixes an inner housing body and an outer housing body reliably can be implement | achieved easily.

  According to the method for manufacturing the ball joint housing according to claim 8, the rivet portion, which is a fixed portion protruding from the inner housing body, is inserted through the outer housing body in a state where the inner housing body is press-fitted into the outer housing body. By being inserted into the hole, the distal end side of the inserted rivet portion is deformed, and the inner housing body and the outer housing can be easily and reliably fixed.

  According to the method for manufacturing a ball joint housing according to claim 9, the caulking deformed portion which is a fixed portion forming a part of the inner housing body is provided in the outer housing body in a state where the inner housing body is press-fitted into the outer housing body. By being inserted into the housing insertion hole, the inserted caulking deformation portion is caulked and deformed and fixed to the peripheral edge portion of the housing insertion hole, so that the inner housing body and the outer housing can be fixed easily and reliably.

  The configuration of the first embodiment of the present invention will be described below with reference to FIGS.

  In FIG. 2, 11 is a ball joint for a stabilizer link, and this ball joint 11 is used for, for example, an automobile suspension device or a steering device.

  Hereinafter, the vertical direction shown in FIGS. 1 and 2 will be described as the vertical direction for convenience.

  The ball joint 11 includes a ball stud 12 made of steel or the like, and the ball stud 12 is a ball portion 13 that is a substantially spherical sphere head, and a shaft-shaped shaft portion that protrudes integrally with the ball portion 13. A stud portion 14 and an annular flange portion 15 projecting integrally on the outer peripheral side of the stud portion 14 are provided.

  Further, the ball joint 11 includes a ball joint housing 17 having a substantially bottomed cylindrical shape that rotatably holds the ball portion 13 of the ball stud 12 via a bearing seat 16 made of synthetic resin or the like. Between the flange portion 15 of the ball stud 12 and the ball joint housing 17, there is provided a substantially cylindrical dust cover 18 made of elastically deformable rubber or the like.

  The ball joint housing 17 is also called a socket. As shown in FIG. 1, as shown in FIG. 1, a linkage portion 21 that is an external housing body serving as a main body, and the linkage portion 21 are separately press-fitted into the linkage portion 21. It is formed in a double structure including a socket portion 22 which is an internal housing body.

  The linkage portion 21 is formed in a substantially cylindrical shape with, for example, aluminum which is a low-cost and light specific gravity (light weight) material, and a press-fit chamber portion 25 into which the socket portion 22 is press-fitted is defined. The press-fit opening 26 into which the socket portion 22 is inserted is opened on the upper side which is one end portion in the axial direction, and the external insertion hole 27 is opened on the lower side which is the other end portion in the axial direction. . Further, the linkage portion 21 is formed with a cover step portion 28 that engages with the dust cover 18 on the outer periphery of the upper end portion that is one end portion in the axial direction.

  The press-fitting chamber portion 25 is connected to the insertion-side inner peripheral surface 31 formed in a circular arc shape parallel to the axial direction of the linkage portion 21 continuously from the press-fit opening 26 and to the lower end of the insertion-side inner peripheral surface 31. An inclined inner peripheral surface 32 having an arcuate surface inclined so as to be reduced in diameter toward the lower side with respect to the axial direction of the portion 21, and a lower end of the inclined inner peripheral surface 32 and parallel to the axial direction of the linkage portion 21 An arcuate surface-shaped fixed inner peripheral surface 33 and a circular flat bottom surface 34 extending in the direction intersecting the axial direction of the linkage portion 21 and continuing to the lower end of the fixed inner peripheral surface 33, and the center of the bottom surface 34 An external insertion hole 27 is formed in the part.

  Further, the socket portion 22 is formed of a plastically deformable material, for example, iron or the like, is formed in a substantially cylindrical shape and thinner than the linkage portion 21, and the ball stud 12 is rotatably held by the bearing seat 16 therein. An inner chamber 37 that holds the ball portion 13 (FIG. 2) is partitioned, and communicates with the inner chamber 37 so that the stud portion 14 side (FIG. 2) of the ball stud 12 is on the upper side, which is one end portion in the axial direction. A protruding opening 38 that protrudes is opened, and an internal insertion hole 39 is opened on the lower side that is the other end portion in the axial direction. Further, the socket portion 22 is formed to have a predetermined allowance relative to the press-fit chamber portion 25 of the linkage portion 21, that is, larger than the shape of the press-fit chamber portion 25 by a predetermined amount. If the tightening margin is too large, the linkage portion 21 may be cracked, and if it is too small, the socket portion 22 may be rattled.

  The socket portion 22 has a cylindrical insertion side cylindrical portion 42 parallel to the axial direction of the socket portion 22 provided at the upper end with a caulking portion 41 having a protruding opening 38 therein, and a lower end of the insertion side cylindrical portion 42. A cylindrical inclined portion 43 that is continuous and inclined so as to be reduced in diameter downward with respect to the axial direction of the socket portion 22, and a fixed cylinder that is continuous with the lower end of the inclined portion 43 and is parallel to the axial direction of the socket portion 22. Part 44 and a disk-like bottom part 45 extending in the direction intersecting the axial direction of the socket part 22 and continuing to the lower end of the fixed cylindrical part 44, and an internal insertion hole 39 is formed in the center part of the bottom part 45. It is installed.

  The socket portion 22 may be appropriately provided with slits, outer peripheral projections, etc. in order to loosen the fitting tolerance for press-fitting.

  In general, the linkage portion 21 is formed of a material having a specific gravity lighter than that of the socket portion 22, but a material having an equivalent specific gravity or a material having a higher specific gravity may be used. Also, the linkage portion 21 and the socket may be used. The part 22 may be formed of the same material.

  The caulking portion 41 is a portion protruding upward from the press-fit opening 26 of the linkage portion 21 in a state where the socket portion 22 is press-fitted into the press-fit chamber portion 25 of the linkage portion 21, and is caulked in the direction of the central axis of the socket portion 22. Due to the deformation, the diameter of the ball stud 12 is reduced so as to extend toward the central axis. As a result, the ball portion 13 of the ball stud 12 does not come out of the ball joint housing 17 as shown in FIG.

  As shown in FIG. 1, the insertion-side cylindrical portion 42 has an outer peripheral surface held by the insertion-side inner peripheral surface 31 of the linkage portion 21.

  The inclined portion 43 is held at the outer peripheral surface by the inclined inner peripheral surface 32 of the linkage portion 21.

  An outer peripheral surface of the fixed cylindrical portion 44 is held by a fixed inner peripheral surface 33 of the linkage portion 21.

  The bottom portion 45 faces the bottom surface 34 of the linkage portion 21, and the amount of insertion of the socket portion 22 into the linkage portion 21 is regulated by contacting the bottom surface 34.

  The internal insertion hole 39 has a diameter substantially equal to that of the external insertion hole 27 of the linkage portion 21 and communicates with the external insertion hole 27 in a state where the socket portion 22 is press-fitted into the linkage portion 21. A rivet 46 as a fixing portion is inserted through the communicating insertion holes 27 and 39.

  The rivet 46 connects and fixes the linkage part 21 and the socket part 22 and is formed of a metal material such as aluminum, for example, and has a circular head 47 and a diameter smaller than that of the head 47. And a rivet shaft portion 48 protruding in a shaft shape from the portion 47.

  The head 47 is formed larger in diameter than the insertion holes 27 and 39 and is located on the bottom 45 of the socket 22.

  The rivet shaft portion 48 is inserted into the insertion holes 27 and 39, and the tip side protrudes from the lower part of the linkage portion 21. By deforming the tip side so as to be crushed, the tip side is the same as the head 47. A deformed head 49 is formed, and the deformed head 49 and the head 47 are configured to connect and fix the linkage portion 21 and the socket portion 22.

  Next, a method for manufacturing the ball joint housing according to the first embodiment will be described.

  First, for example, a material such as aluminum having a low specific gravity and a low specific gravity is die-cast or cast to obtain the linkage portion 21 (external housing body forming step).

  Next, for example, a plastically deformable material such as iron is press-molded to obtain the socket portion 22 (internal housing body forming step).

  Further, as shown in FIG. 1A, the socket portion 22 is press-fitted into the press-fit chamber portion 25 of the linkage portion 21 from the press-fit opening 26 side (press-fit process), and the rivet 46 is placed on the inner chamber 37 side of the socket portion 22. Then, the rivet shaft portion 48 is inserted into the insertion holes 27 and 39 (fixing portion insertion step).

  Then, as shown in FIG. 1 (b), the distal end side of the rivet shaft portion 48 of the rivet 46 is deformed outside the linkage portion 21 to form a deformed head portion 49, whereby the linkage portion 21 and the socket portion are formed. 22 are connected and fixed to each other (fixing step).

  Next, in a state where the ball portion 13 of the ball stud 12 is rotatably held on the bearing seat 16, the ball portion 13 is inserted into the inner chamber 37 of the socket portion 22 through the projecting opening 38 together with the bearing seat 16.

  The ball portion 13 is held in the ball joint housing 17 together with the bearing seat 16 by deforming the caulking portion 41 of the socket portion 22 together with the bearing seat 16 in the central axis direction.

  Thereafter, the dust cover 18 is attached between the flange portion 15 of the ball stud 12 and the cover step portion 28 of the ball joint housing 17 to obtain the ball joint 11.

  Thus, according to the first embodiment, the socket part 22 formed of a plastically deformable material is press-fitted into the linkage part 21 separate from the socket part 22 and the socket part 22 is press-fitted. In this state, by deforming the rivet 46 and fixing the linkage portion 21 and the socket portion 22, the manufacturing cost of the ball joint housing 17 can be reduced, and the linkage portion 21 and the socket portion 22 can be reduced. Can be fixed securely.

  In addition, the linkage part 21 which is the main body of the ball joint housing 17 is separated from the socket part 22, and this linkage part 21 is formed of a material having a low specific gravity and a low cost to increase the thickness, and the socket part 22 is minimized. If the thickness is limited, the ball joint housing 17 can be significantly reduced in weight and cost.

  Furthermore, compared to the case where the socket part is insert-molded in the linkage part, special equipment such as a robot for placing the socket part in the linkage part, the time required for placing this socket part in the linkage part, etc. Is also unnecessary, and the unit price can be suppressed.

  Specifically, the linkage part 21 is configured by inserting a rivet 46 into the internal insertion hole 39 of the socket part 22 and the external insertion hole 27 of the linkage part 21 and deforming the tip side of the rivet 46. And the socket portion 22 can be easily fixed.

  Moreover, by inserting the rivet shaft portion 48 of the rivet 46 into the insertion holes 39 and 27 from the socket portion 22 side, the rivet shaft portion 48 can be easily deformed outside the linkage portion 21 having a relatively large space. This improves the manufacturability.

  In addition, by using an aluminum rivet 46 with a low specific gravity, the weight of the ball joint housing 17 can be suppressed, and the weight difference is minimized even when the socket part is insert-molded in the linkage part. It can be suppressed to the limit.

  Furthermore, since the socket portion 22 and the linkage portion 21 can be securely fixed by press-fitting and the rivets 46, it is possible to prevent problems such as cracks when the caulking portion 41 is deformed by caulking.

  Since the ball joint 11 includes the ball joint housing 17, the weight can be reduced and the manufacturing cost can be reduced, and the socket portion 22 and the linkage portion 21 can be securely fixed, and the reliability of the product ( Quality, strength, etc.).

  In the first embodiment, the rivet 46 is assembled from the inner chamber 37 side of the socket portion 22, but the distal end side of the rivet shaft portion 48 is deformed in the socket portion 22 by assembling from the linkage portion 21 side. Also good.

  Next, a second embodiment will be described with reference to FIG. In addition, about the structure and effect | action similar to the said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the second embodiment, an insertion hole 51 is formed in the bottom surface 34 of the linkage portion 21 of the ball joint housing 17 instead of the external insertion hole 27, and the socket portion 22 protrudes from the insertion hole 51. A rivet portion 52, which is a fixed portion, is inserted, and the distal end side of the rivet portion 52 is deformed outside the linkage portion 21, whereby the linkage portion 21 and the socket portion 22 are connected and fixed.

  Specifically, the socket portion 22 is replaced with the fixed cylindrical portion 44 of the first embodiment, and a disc-shaped bottom surface portion 54 along the direction intersecting the axial direction of the socket portion 22 at the lower end of the inclined portion 43. A rivet portion 52 projects from the bottom of the bottom surface portion 54.

  Then, a rivet portion 52 is projected from the socket portion 22, and the rivet portion 52 is inserted into the insertion hole 51 of the linkage portion 21 in a state where the socket portion 22 is press-fitted into the linkage portion 21 as shown in FIG. By being inserted, not only the process of assembling a separate rivet becomes unnecessary, but also as shown in FIG. 3 (b), the distal end side of the inserted rivet portion 52 is deformed to make a large-diameter rivet head. By forming the portion 55, the socket portion 22 and the linkage portion 21 are directly connected using the rivet portion 52 which is a part of the socket portion 22, and the socket portion 22 and the linkage portion 21 are more easily and reliably connected. Can be fixed.

  Further, unlike the case where the rivets are assembled separately across the socket portion 22 and the linkage portion 21, no portion where the rivet protrudes is formed on the inner chamber 37 side of the socket portion 22. Therefore, the inner chamber 37 can be secured widely.

  Next, a third embodiment will be described with reference to FIG. In addition, about the structure and effect | action similar to the said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the third embodiment, a large-diameter housing insertion hole 61 is formed in the lower end of the linkage portion 21 of the ball joint housing 17 of the first embodiment in place of the external insertion hole 27. A caulking deformation part 62, which is a fixing part that forms a part of the socket part 22, is inserted into the hole 61, and the caulking deformation part 62 is caulked and deformed outside the linkage part 21, thereby the linkage part 21 and the socket part. 22 is connected and fixed.

  That is, in the linkage portion 21, a housing insertion hole 61 is formed at the lower end of the inclined inner peripheral surface 32 at the lower end of the insertion side inner peripheral surface 31.

  The socket portion 22 is connected to the lower end of the inclined portion 43, the fixed cylindrical portion 64 that is parallel to the axial direction of the socket portion 22 and defines a part of the inner chamber 37, and the lower end of the fixed cylindrical portion 44. And a caulking deforming portion 62 formed by a disc-shaped bottom portion 65 that is formed along a direction crossing the axial direction of the inner chamber 37 and divides the bottom portion of the inner chamber 37.

  Then, as shown in FIG. 4A, in a state where the socket portion 22 is press-fitted into the press-fitting chamber portion 25 of the linkage portion 21, a part on the lower end side of the fixed cylindrical portion 64 and the bottom portion 65 are connected to the linkage portion 21. By projecting downward from the housing insertion hole 61 and applying external force to the bottom 65 from below to above, caulking deformation is performed so that the lower end side of the fixed cylindrical portion 64 is expanded in diameter as shown in FIG. Then, it is connected and fixed to the peripheral edge portion of the housing insertion hole 61.

  As described above, the caulking deformed portion 62 that forms a part of the socket portion 22 and defines the inner chamber 37 is inserted into the housing insertion hole 61 in a state where the socket portion 22 is press-fitted into the linkage portion 21, thereby being inserted. The socket part 22 and the linkage part 21 can be fixed easily and reliably by caulking and deforming the caulking deformation part 62 and fixing it to the peripheral edge part of the housing insertion hole 61.

  Further, since the caulking deformation part 62 forms a part of the socket part 22, the socket part and the linkage part are connected and fixed with a separate rivet, or a connecting protrusion is provided on the socket part 22. Compared to the case, an extra portion that increases the weight is unnecessary, and the weight can be further reduced.

  In addition, since the linkage portion 21 projects a part of the socket portion 22 in the axial direction, the dimension in the axial direction can be suppressed, so that not only the material cost can be reduced, but also the linkage portion 21 can be reduced in weight.

  In each of the above embodiments, the details of the ball joint 11 are not limited to the above configuration, and the ball joint housing 17 of each of the above embodiments is for a ball bush (pillow ball) as a ball joint, for example. It can also be applied as a housing.

(a) is explanatory sectional drawing which shows the press-fit process of the manufacturing method of the housing for ball joints of the 1st Embodiment of this invention, (b) is explanatory sectional drawing which shows the fixing process of the manufacturing method of the housing for ball joints same as the above. It is. It is explanatory sectional drawing which shows the ball joint provided with the housing for ball joints same as the above. (a) is explanatory sectional drawing which shows the press-fit process of the manufacturing method of the ball joint housing of the 2nd Embodiment of this invention, (b) is explanatory sectional drawing which shows the fixing process of the manufacturing method of the ball joint housing same as the above. It is. (a) is explanatory sectional drawing which shows the press fit process of the manufacturing method of the housing for ball joints of the 3rd Embodiment of this invention, (b) is explanatory sectional drawing which shows the fixing process of the manufacturing method of the housing for ball joints same as the above. It is.

Explanation of symbols

11 Ball joint
12 Ball stud
13 Ball part which is the ball head
17 Ball joint housing
21 Linkage as external housing
22 Socket as internal housing
27 External insertion hole
39 Internal insertion hole
46 Rivet as a fixed part
51 Insertion hole
52 Rivet part which is fixed part
61 Housing insertion hole
62 Caulking deformation part which is a fixed part

Claims (9)

An inner housing body formed of a plastically deformable material and holding the ball head inside by caulking deformation;
An external housing body that is provided separately from the internal housing body and into which the internal housing body is press-fitted,
A ball joint housing, comprising: a fixing portion that is deformed in a state in which the inner housing body is press-fitted into the outer housing body and fixes the inner housing body to the outer housing body. The inner housing body has an inner insertion hole,
The external housing body includes an external insertion hole communicating with the internal insertion hole in a state where the internal housing body is press-fitted,
The ball joint housing according to claim 1, wherein the fixing portion is a rivet that is inserted into the inner insertion hole and the outer insertion hole and deformed at a distal end side. The outer housing body has an insertion hole at a position facing the inner housing body,
The fixing portion is a rivet portion that protrudes from the inner housing body, is inserted into the insertion hole by press-fitting the inner housing body into the outer housing body, and the distal end side is deformed while being inserted into the insertion hole. The ball joint housing according to claim 1, wherein the ball joint housing is provided. The outer housing body has a housing insertion hole,
The fixing portion forms a part of the inner housing body, is inserted into the housing insertion hole by press-fitting the inner housing body into the outer housing body, and is fixed to a peripheral edge portion of the housing insertion hole by caulking deformation. It is a deformation | transformation part. The housing for ball joints of Claim 1 characterized by the above-mentioned. A ball joint housing according to any one of claims 1 to 4,
And a ball stud having a ball head rotatably held by the inner housing body of the ball joint housing. A press-fitting step of press-fitting an internal housing body formed of a plastically deformable material and holding the ball head inside by caulking deformation into an external housing body separate from the internal housing body;
A method of manufacturing a ball joint housing, comprising: a fixing step of fixing the inner housing body to the outer housing body by deforming a fixing portion in the press-fitted state. The fixed portion is a rivet that is inserted through the internal insertion hole of the internal housing body and the external insertion hole of the external housing body that communicates with the internal insertion hole in a state where the internal housing body is press-fitted into the external housing body.
The ball according to claim 6, wherein in the fixing step, the inner housing body is fixed to the outer housing body by deforming a distal end side of a rivet inserted through the inner insertion hole and the outer insertion hole. A method for manufacturing a joint housing. The fixed portion is a rivet portion protruding from the inner housing body,
In the fixing step, the inner housing body is deformed outside the outer housing body by deforming a distal end side of the rivet portion inserted through the insertion hole by press-fitting the inner housing body into the outer housing body. The ball joint housing manufacturing method according to claim 6, wherein the ball joint housing is fixed to the housing body. The fixed portion is a deformed portion that forms a part of the inner housing body,
In the fixing process, the inner housing body is deformed by caulking and deforming the caulking deformation portion inserted into the housing insertion hole by press-fitting the inner housing body into the outer housing body, and fixing the inner housing body to the peripheral portion of the housing insertion hole. The method of manufacturing a ball joint housing according to claim 6, wherein a body is fixed to the external housing body.

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