JP2022122752A - Joint component - Google Patents

Abstract

To provide a joint component that is excellent in joint strength between a first member and a second member, and can make it easy to grasp that a brazing material has melted.SOLUTION: A joint component comprises a first member and a first member. The first member has a first region including a first central region and a first outer region. The second member has a second region including a second central region and a second outer region. The first outer region and the second outer region are brazed with each other. The first outer region has: a plurality of first grooves 171 radially extending from an inner edge side of the first outer region toward an outer edge side thereof; a frame-like second groove 172 that connects the ends of the outer edge side in each of the plurality of first grooves 171; a frame-like third groove 173 disposed on an outer edge of the first outer region, and surrounding the second groove 172; a fourth groove 174 disposed so as to communicate with the second groove 172 and the third groove 173; a first inner plane 175 disposed among the plurality of first grooves 171; and a first outer plane 176 disposed among the second groove 172, the third groove 173, and the fourth groove 174.SELECTED DRAWING: Figure 5

Description

The present disclosure relates to joining components.

Patent Literature 1 discloses a joining component that is a planetary carrier. The joining component comprises a first member and a second member. The first member is composed of an annular plate. The first member has a first joint surface. The second member is composed of an annular plate and a plurality of columnar bridge portions. Each bridge portion is connected to the lower surface of the annular plate. The end surface of each bridge portion is configured with a second joint surface. The first joint surface and the second joint surface are brazed. The brazing joins the first member and the second member.

The first joint surface has guide grooves extending radially. The second joint surface is chamfered along the periphery of the second joint surface. The terminal end of the guide groove overlaps the chamfer. A molten brazing material flows through the guide groove during the manufacturing process. The brazing filler metal that has flowed through the guide groove permeates between the first joint surface and the second joint surface. The chamfered portion collects the brazing material that has flowed through the guide groove.

WO2019/031210

In the guide groove described above, it is difficult to spread the melted brazing filler metal over a wide area between the first joint surface and the second joint surface during the manufacturing process. Since it is difficult to distribute the brazing material, the melted brazing material is less likely to overflow between the first joint surface and the second joint surface. In particular, as described above, the chamfer collects the melted brazing material, so that the brazing material is much less likely to overflow. Therefore, it is difficult to grasp that the brazing material has melted.

One of the objects of the present disclosure is to provide a joint component that is excellent in joint strength between a first member and a second member, and in which it is possible to easily recognize that the brazing filler metal has melted.

A joint component of the present disclosure comprises a first member and a second member joined to the first member, wherein the first member comprises a first central region and a first central region The second member has a first region including a first outer region surrounding the region, the second member having a second central region and a second region including a second outer region surrounding the second central region. The first central region and the second central region form a space therebetween without being brazed to each other, and the first outer region and the second outer region are brazed to each other. The first outer region includes a plurality of first grooves radially extending from the inner edge side of the first outer region toward the outer edge side, and the outer edge side of each of the plurality of first grooves. A frame-shaped second groove connecting the ends of the second groove, a frame-shaped third groove provided on the outer edge of the first outer region and surrounding the second groove, the second groove and the third A fourth groove provided to communicate with the third groove, a first inner plane provided between the plurality of first grooves, the second groove, the third groove, and the fourth a first outer planar surface interposed with the groove.

The joint component of the present disclosure is excellent in joint strength between the first member and the second member, and it can be easily recognized that the brazing filler metal has melted.

FIG. 1 is a schematic perspective view showing an example of a joint component according to an embodiment. FIG. 2 is an exploded perspective view showing a first member and a second member provided in the joint component according to the embodiment. FIG. 3 is an exploded perspective view showing a first member and a second member provided in the joint component according to the embodiment. FIG. 4 is a plan view schematically showing a first region included in the joint component according to the embodiment; FIG. 5 is a plan view schematically showing the layout of grooves and planes in the first region provided in the joint component according to the embodiment. FIG. 6 is a sectional view taken along line VI-VI in FIG. FIG. 7 is a perspective view schematically showing overflowing brazing filler metal between the first region and the second region provided in the joint component according to the embodiment. FIG. 8 is a plan view schematically showing the layout of grooves and planes of the first region provided in the joint component according to the modification.

<<Description of Embodiments of the Present Disclosure>>
First, the embodiments of the present disclosure are listed and described.

(1) A joint component according to an aspect of the present disclosure is a joint component including a first member and a second member joined to the first member, wherein the first member includes a first central and a first outer region surrounding the first central region, the second member having a second central region and a second outer region surrounding the second central region wherein the first central region and the second central region form a space therebetween without being brazed together, and the first outer region and the second The outer region is brazed together, and the first outer region includes a plurality of first grooves radially extending from the inner edge side toward the outer edge side of the first outer region; a frame-shaped second groove that connects the ends of each of the grooves on the outer edge side; a frame-shaped third groove that is provided on the outer edge of the first outer region and surrounds the second groove; a fourth groove provided to communicate with the second groove and the third groove; a first inner plane provided between the plurality of first grooves; a first outer planar surface located between the third groove and the fourth groove.

The joint component of the present disclosure has excellent joint strength between the first member and the second member. During the manufacturing process of the joining part, the brazing filler metal arranged between the first central region and the second central region is melted. Since the first region has the first to fourth grooves, the melted brazing material tends to spread over a wide area of the first region along each groove during the manufacturing process. Therefore, melted brazing material easily spreads from each groove between the first inner plane and the second outer region and between the first outer plane and the second outer region. Therefore, the melted brazing material easily spreads over a wide area between the first outer region and the second outer region. Therefore, the first outer region and the second outer region are easily brazed over a wide range.

With the joint component of the present disclosure, it is easy to recognize that the brazing filler metal has melted. In the manufacturing process, melted brazing material tends to overflow outside the third groove. The overflowing brazing material remains in the overflowed area by solidifying. Therefore, the overflowing and solidified brazing filler metal can be visually observed.

(2) As one form of the joining component, the first central region has a pedestal projecting toward the second central region, and the position of the end surface of the pedestal is positioned relative to the first inner plane. The second central region may have a hole or recess provided at a location corresponding to the pedestal.

The joint component is even more excellent in joint strength between the first member and the second member. This is because the presence of the pedestal makes it easy for the melted brazing material to spread over a wide area between the first outer region and the second outer region due to gravity during the manufacturing process.

(3) As one form of the joint component, the first member includes an annular first plate portion and a plurality of columnar leg portions spaced apart in the circumferential direction of the first plate portion. and wherein the second member has an annular second plate portion, and each of the plurality of legs includes a side surface connected to the first plate portion and the second plate portion of the side surface. and an end surface connected to an end opposite to the side connected to the one plate portion, the end surface being configured by the first region, and the second plate portion being the second plate portion. A plurality of second regions spaced apart in the circumferential direction, and among the second regions adjacent in the circumferential direction, a third region in which the movable member is arranged, and the adjacent second regions in the circumferential direction and a fourth region between the second regions in which no movable member is arranged, and the fourth groove is located on the side of the fourth region in the first outer region or on the outer peripheral side of the first plate portion It is mentioned that it extends toward.

In the joint component, it is possible to easily grasp that the brazing material has melted without the brazing material interfering with the movement of the movable member. This is because melted brazing filler metal in the manufacturing process does not easily overflow into the third area where the movable member is arranged, but easily overflows into the fourth area where the movable member is not arranged and the outer peripheral side of the first plate portion. A movable member is a member that moves relative to the joining member. An example of the movable member is a rotating member.

(4) As one form of the joining component, the fourth groove may be provided on the same straight line as one of the plurality of first grooves.

It is easy to recognize that the brazing material has melted in the joining part. Since the first groove and the fourth groove are provided on the same straight line, in the manufacturing process, the melted brazing material is mainly This is because the liquid easily overflows from the side intersecting the fourth groove to the outside between the first outer region and the second outer region.

(5) As one form of the joining component, the width of each of the plurality of first grooves may be uniform in the longitudinal direction.

The joint component is even more excellent in joint strength between the first member and the second member. Since the width of each first groove is uniform in the longitudinal direction, the melted brazing material flows evenly in the longitudinal direction of the first grooves during the manufacturing process, so that the brazing material flowing through the first grooves reaches the first inner plane. and the second outer region.

<<Details of the embodiment of the present disclosure>>
Details of embodiments of the present disclosure are described below. The same reference numerals in the drawings indicate the same names. The sizes and positional relationships of members shown in each drawing are expressed for the purpose of clarifying the description, and do not necessarily represent the actual dimensional relationships.

<<Embodiment>>
[Joint parts]
A joint component 1 according to an embodiment will be described with reference to FIGS. 1 to 7. FIG. The joining component 1 of this embodiment includes a first member 10 and a second member 20, as shown in FIG. The first member 10 and the second member 20 are joined together. The first member 10 has a first region 15, as shown in FIGS. The first region 15 includes a first central region 16 and a first outer region 17, as shown in FIG. The second member 20 has a second region 25, as shown in FIG. Second region 25 includes a second central region 26 and a second outer region 27 . The first central region 16 and the second central region 26 form a space between them without being brazed together. The first outer region 17 and the second outer region 27 are brazed together. One of the features of the joint component 1 of this embodiment is that, as shown in FIG. It has an inner plane 175 and a first outer plane 176 .

Each configuration will be described in detail below. In the following embodiments, an example in which the joint component 1 is a planetary carrier will be described. As shown in FIG. 1, in this embodiment, the joint component 1, which is a planetary carrier, has a first member 10 having an annular first plate portion 11 and a plurality of columnar leg portions 12, and a second member 20 has an annular second plate portion 21 .

[First member]
The first member 10 is joined to the second member 20 as shown in FIG. The first member 10 has a first plate portion 11 and a plurality of legs 12, as shown in FIGS. The first plate portion 11 and the plurality of leg portions 12 are integrally formed. Integrally formed means that the first plate portion 11 and the plurality of leg portions 12 are formed in series without being mechanically connected using screws or joined with brazing material. Say. The material and type of the first member 10 are not particularly limited and can be selected as appropriate. Examples of the material of the first member 10 include pure iron, iron alloys, and non-ferrous metals. Examples of the type of the first member 10 include a sintered body. A sintered compact is obtained by sintering a powder compact. The powder compact is obtained by pressure-molding the raw material powder. Powders of the above materials can be used as raw material powders. The first member 10 is made of a sintered body made of an iron alloy in this embodiment.

(First plate)
The outer shape of the first plate portion 11 is not particularly limited as long as it is a flat annular shape, and can be selected as appropriate. The outer shape of the first plate portion 11 is annular in this embodiment. Unlike this embodiment, the outer shape of the first plate portion 11 may be a triangular ring. The first plate portion 11 has a first surface 111 and a first back surface 112 . The first surface 111 is located opposite the first back surface 112 . The first rear surface 112 faces a second rear surface 212 of the second plate portion 21, which will be described later. In this embodiment, the first surface 111 and the first back surface 112 are planar. The first surface 111 and the first back surface 112 are not limited to flat surfaces. Unlike this embodiment, the first surface 111 and the first back surface 112 may be provided with unevenness. The first plate portion 11 has a first hole portion 113 .

<First hole>
The first hole portion 113 is a through hole penetrating through the first plate portion 11 in the thickness direction. Thickness is the length between the first surface 111 and the first back surface 112 . That is, the thickness direction of the first plate portion 11 is a direction along the direction in which the first surface 111 and the first back surface 112 face each other. The inner peripheral shape of the first hole portion 113 is cylindrical in this embodiment. When the joint component 1 constructs a planetary carrier as in this embodiment, the number of the first holes 113 is the same as the number of pinion gears. In this case, the shaft of the pinion gear is inserted through the first hole portion 113 . This pinion gear is an example of a movable member. The number of first holes 113 is three in this embodiment. The three first holes 113 are arranged in parallel on the circumference around the center of the first plate portion 11 . The center of the first plate portion 11 refers to the center of the circumscribed circle of the first plate portion 11 . In this embodiment, the three first holes 113 are provided at substantially equal intervals on the circumference.

(leg)
The leg portion 12 provides a predetermined gap between the first back surface 112 of the first plate portion 11 and the second back surface 212 of the second plate portion 21, which will be described later. A side surface 121 of the leg portion 12 is connected to the first rear surface 112 of the first plate portion 11 . The end surface 122 of the leg portion 12 shown in FIG. 2 is brazed to the second rear surface 212 of the second plate portion 21 as shown in FIG. The number of legs 12 is not particularly limited and can be selected as appropriate. The number of legs 12 may be plural. The number of legs 12 is six in this embodiment. The six legs 12 are arranged in parallel on the circumference around the center of the first plate portion 11 . In this embodiment, as shown in FIGS. 1 and 2, the six legs 12 are arranged alternately so that portions with wide intervals between the legs 12 adjacent to each other in the circumferential direction and portions with narrow intervals are arranged alternately. , on the circumference of the circle. The leg portions 12 are provided such that the interval between the leg portions 12 sandwiching the first hole portion 113 in the circumferential direction among the leg portions 12 adjacent in the circumferential direction is widened.

The shape of each leg 12 is not particularly limited and can be selected as appropriate. The shape of each leg portion 12 may be, for example, a triangular prism shape or a square prism shape. That is, the planar shape of the end face 122 of the leg portion 12 may be triangular, quadrangular, or the like. The “prism shape” and “square shape” include shapes having rounded corners. Examples of triangles include equilateral triangles and isosceles triangles. Quadrilaterals include trapezoids, squares, rectangles, and the like.

In this embodiment, each leg 12 has a trapezoidal columnar shape, as shown in FIG. That is, the planar shape of the end surface 122 of each leg 12 is trapezoidal. The width of each leg portion 12 narrows from the radially outer side to the inner side of the first plate portion 11 .

(first area)
In this embodiment, the first region 15 is formed on the end surface 122 of each leg 12, as shown in FIG. FIG. 2 shows the first region 15 in simplified form. The planar shape of the first region 15 may be a shape corresponding to the shape of the end surface 122 of the leg portion 12 . In this embodiment, the planar shape of the first region 15 is trapezoidal. The first region 15 includes a first central region 16 and a first outer region 17, as shown in FIG.

<First Central Area>
The first central region 16 forms a space between the second central region 26 and the second central region 26 without being brazed to the second central region 26 of the second region 25 described later with reference to FIG. That is, the first central region 16 is a non-bonded region. This space is used as a space for accommodating the first brazing material 91 in the manufacturing process. The first central region 16 is a region surrounded by inner peripheral surfaces of hole portions 261 to be described later when the first member 10 and the second member 20 are joined through the manufacturing process. A first central region 16 is provided in the center of the first region 15 . The contour shape of the first central region 16 is a shape corresponding to the contour shape of the second central region 26 . The contour shape of the first central region 16 of this embodiment is circular. The "circular shape" as used herein includes a perfect circle, an ellipse, and the like. The first central region 16 includes a portion of the first inner flat surface 175, which will be described below with reference to FIG. 5, and a portion of the first groove 171, which will be described below. Preferably, the first central region 16 further has a pedestal 161, as shown in FIGS. FIG. 6 is a sectional view taken along line VI-VI of FIG. 5, but shows the second plate portion 21 for convenience of explanation.

Pedestal Part The first brazing material 91 is placed on the pedestal part 161 during the manufacturing process of the joining component 1 . The first brazing material 91 is a brazing material before being melted. The first brazing material 91 is indicated by a chain double-dashed line in FIG. The pedestal portion 161 protrudes toward the second central region 26 as shown in FIG. The pedestal 161 facilitates the flow of molten brazing material by gravity during the manufacturing process. Therefore, the melted brazing material easily flows between the first outer region 17 and the second outer region 27 .

The shape of the pedestal portion 161 may be a cylindrical shape, a truncated cone shape, a prismatic shape, a truncated pyramid shape, or the like. The “circle” or “corner” referred to here means that the contour shape of the pedestal portion 161 is the “circular shape” described above or the “angular shape” described later. In this embodiment, the shape of the pedestal portion 161 is cylindrical.

A side surface 162 of the base portion 161 is connected to the first inner flat surface 175 and the bottom of the first groove 171 . The end surface 163 of the base portion 161 is connected to the end of the side surface 162 opposite to the side connected to the first inner flat surface 175 . The position of the end face 163 is higher than the position of the first inner plane 175 . Being at a high position means being on the second central region 26 side.

The height of the pedestal portion 161 is, for example, 0.01 mm or more and 0.50 mm or less. The height of the pedestal portion 161 refers to the length between the first inner flat surface 175 and the end surface 163 . If the height of the pedestal portion 161 is 0.01 mm or more, the melted brazing material tends to flow due to gravity during the manufacturing process. If the height of the pedestal portion 161 is 0.50 mm or less, the melted brazing material can be quickly spread over a wide area between the first outer region 17 and the second outer region 27 with a small amount of brazing material during the manufacturing process. Easy to cross. Further, the height of the pedestal portion 161 may be 0.05 mm or more and 0.30 mm or less, and particularly 0.05 mm or more and 0.15 mm or less.

<First outer region>
The first outer region 17 shown in FIG. 4 is brazed to the second outer region 27 of the second region 25 shown in FIG. That is, the first outer region 17 is the joining region. A first outer region 17 surrounds the first central region 16 . The first outer region 17 connects to the first central region 16 . The inner edge of the first outer region 17 is the boundary with the first central region 16 . The outer edge of the first outer region 17 is the outer edge of the first region 15 . The first outer region 17 has a first groove 171, a second groove 172, a third groove 173, a fourth groove 174, a first inner plane 175 and a first outer plane 176, as shown in FIG.

First Groove The first groove 171 allows melted brazing material to flow into the first groove 171 during the manufacturing process, and diffuses the brazing material that has flowed into the first inner flat surface 175 . Also, the first groove 171 allows the flowing brazing material to flow to the second groove 172 . The second brazing material 92 remains in the first groove 171 as shown in FIG. The second brazing material 92 is a brazing material that flows and solidifies after being melted.

The first grooves 171 radially extend from the inner edge side of the first outer region 17 toward the outer edge side. In this embodiment, each first groove 171 is provided from inside the first central region 16 to the outer edge side of the first outer region 17 . In this embodiment, the first end of each first groove 171 is connected to the side surface 162 of the base portion 161 of the first central region 16, as shown in FIG. That is, the first end of each first groove 171 is closed by the side surface 162 of the base portion 161 . The second end of each first groove 171 communicates with the second groove 172 as shown in FIG. That is, the second end of each first groove 171 is open. The first end of the first groove 171 is the inner edge side end of the first outer region 17 . The second end of the first groove 171 is the end on the outer edge side of the first outer region 17 . Each first groove 171 has a bottom surface, side wall surfaces and a first end wall surface. A first end wall surface is formed by a side surface 162 of the pedestal portion 161 .

The number of first grooves 171 is not particularly limited as long as it is plural, and can be selected as appropriate. The number of first grooves 171 is, for example, three, four, six, or eight. The angles formed by the circumferentially adjacent first grooves 171 may be even. Of the angles formed by the first grooves 171 adjacent in the circumferential direction, at least one angle may be different from the other angles.

In this embodiment, the number of first grooves 171 is four. The four first grooves 171 are provided in a cross shape. In this embodiment, the first and second first grooves 171 extend along the radial direction of the first plate portion 11 . That is, the first and second first grooves 171 are linear grooves. The vertical direction of the paper surface of FIG. 5 is the radial direction of the first plate portion 11 . The upward direction of the paper surface of FIG. 5 is the inner peripheral side of the first plate portion 11 . The downward direction of the paper surface of FIG. 5 is the outer peripheral side of the first plate portion 11 . The third and fourth first grooves 171 extend along the circumferential direction of the first plate portion 11 . That is, the third and fourth first grooves 171 are arcuate grooves. Unlike this embodiment, the third and fourth first grooves 171 may extend along the direction perpendicular to the first and second first grooves 171 . The first first groove 171 extends from the base portion 161 toward the inner peripheral side of the first plate portion 11 along the radial direction of the first plate portion 11 . The second first groove 171 extends from the base portion 161 toward the outer peripheral side of the first plate portion 11 along the radial direction of the first plate portion 11 . The third first groove 171 extends along the circumferential direction of the first plate portion 11 from the base portion 161 toward the third region 30 described below. The left side of the paper surface of FIG. 5 is the third area 30 . The fourth first groove 171 extends along the circumferential direction of the first plate portion 11 from the base portion 161 toward the fourth region 40 described below. The right side of the paper surface of FIG. 5 is the fourth area 40 . A second end of each of the four first grooves 171 is connected to the middle of each side of a trapezoidal frame-shaped second groove 172 to be described later.

In this embodiment, the cross-sectional shape of the first groove 171 is a rectangular shape with a uniform width from the opening toward the bottom. Unlike this embodiment, the cross-sectional shape of the first groove 171 may be trapezoidal or triangular that gradually narrows from the opening toward the bottom. The cross-sectional shape of the first groove 171 refers to the cross-sectional shape obtained by cutting the first groove 171 along a cross section orthogonal to the longitudinal direction of the first groove 171 .

In this embodiment, the depth of the first groove 171 is uniform in the longitudinal direction. Unlike this embodiment, the depth of the first groove 171 may not be uniform in the longitudinal direction. For example, the depth of the first groove 171 may gradually increase from the first end of the first groove 171 toward the second end. The depth of the first groove 171 is the length from the bottom of the first groove 171 to the opening in the cross section of the first groove 171 .

The depth of the first groove 171 is, for example, 0.01 mm or more and 0.50 mm or less. In the manufacturing process, melted brazing material easily flows into the first groove 171 having a depth of 0.01 mm or more. If the depth of the first groove 171 is 0.50 mm or less, the melted brazing material is likely to diffuse to the first inner flat surface 175 during the manufacturing process. Moreover, the first groove 171 with a depth of 0.50 mm or less is not excessively deep, so that the first brazing material 91 can be saved. Further, the depth of the first groove 171 may be 0.05 mm or more and 0.30 mm or less, and particularly 0.05 mm or more and 0.15 mm or less.

In this embodiment, the opening width of each first groove 171 is uniform in the longitudinal direction. Since the width of each first groove 171 is uniform in the longitudinal direction, the melted brazing material flows uniformly in the longitudinal direction of the first grooves 171 during the manufacturing process. It is easy to flow between one inner flat surface 175 and the second outer region 27 . Unlike this embodiment, the opening width of at least one first groove 171 may not be uniform in the longitudinal direction. For example, the opening width of the first groove 171 may gradually increase from the first end toward the second end. The opening width of the first groove 171 is the length between openings in the cross section of the first groove 171 .

The opening width of the first groove 171 is, for example, 0.01 mm or more and 0.50 mm or less. In the manufacturing process, melted brazing material easily flows into the first groove 171 having an opening width of 0.01 mm or more. If the opening width of the first groove 171 is 0.50 mm or less, the melted brazing material is likely to spread to the first inner flat surface 175 during the manufacturing process. Moreover, the first groove 171 having an opening width of 0.50 mm or less is not excessively wide, so that the first brazing material 91 can be saved. The opening width of the first groove 171 may be 0.05 mm or more and 0.30 mm or less, and particularly 0.05 mm or more and 0.15 mm or less.

Second Groove Like the first groove 171 , the second groove 172 receives melted brazing material during the manufacturing process and diffuses the flowing brazing material to the first inner flat surface 175 . The second groove 172 also diffuses the brazing material that has flowed into the first outer flat surface 176 . Furthermore, the second groove 172 allows the flowed brazing material to flow to the fourth groove 174 . The second brazing material remains in the second grooves 172 as in the first grooves 171 . The second groove 172 connects the second end portions of each of the plurality of first grooves 171 . The location of the second groove 172 is between the outer edge of the first central region 16 and the outer edge of the first outer region 17 . The location of the second groove 172 is preferably midway between the outer edge of the first central region 16 and the outer edge of the first outer region 17, or closer to the outer edge of the first outer region 17 than the middle. The planar shape of the second groove 172 may be a frame shape corresponding to the planar shape of the first region 15 . In this embodiment, the planar shape of the second groove 172 is a trapezoidal frame shape. The cross-sectional shape, depth, and width of the second groove 172 may be the same as or different from the cross-sectional shape, depth, and width of the first groove 171 .

Third Groove The third groove 173 is a groove into which melted brazing material flows in the manufacturing process and diffuses the flowing brazing material to the first outer plane surface 176 in the same manner as the second groove 172 . The second brazing material remains in the third groove 173 as in the first groove 171 . The third groove 173 is provided on the outer edge of the first outer region 17 and surrounds the second groove 172 . The planar shape of the third groove 173 may be a shape corresponding to the contour shape of the outer edge of the first region 15 , that is, the contour shape of the first outer region 17 . In this embodiment, the planar shape of the third groove 173 is a trapezoidal frame shape. The cross-sectional shape, depth, and width of the third groove 173 may be the same as or different from the cross-sectional shape, depth, and width of the first groove 171 . In this embodiment, unlike the first groove 171, the third groove 173 is composed of a bottom surface and first sidewalls. That is, the third groove 173 is like a chamfer.

- Fourth groove The fourth groove 174 is a groove that connects the second groove 172 and the third groove 173 . As with the first groove 171 , the fourth groove 174 allows melted brazing material to flow into the fourth groove 174 during the manufacturing process and allows the flowed brazing material to flow through the third groove 173 . In the manufacturing process, the melted brazing filler metal is spread from a portion of the third groove 173 where the fourth groove 174 is connected as a starting point to the first outer region 17 from the side of the third groove 173 that mainly intersects the fourth groove 174 . and the second outer region 27. Therefore, when the joint component 1 constructs a planetary carrier as in this embodiment, the fourth groove 174 can be provided so that the fourth groove 174 extends to the side where the sun gear (not shown) is not arranged or the pinion gear is not arranged. preferable. The sun gear is provided on the inner peripheral side of the first plate portion 11 . This sun gear is an example of a movable member. The pinion gear is provided at a location with a wide interval between the legs 12 adjacent in the circumferential direction. That is, it is preferable that the fourth groove 174 extends toward the outer peripheral side of the first plate portion 11 or a portion where the interval between the leg portions 12 adjacent in the circumferential direction is narrow. The second brazing material remains in the fourth groove 174 as in the first groove 171 .

The number of fourth grooves 174 may be singular or plural. In this embodiment, the number of fourth grooves 174 is two. The first fourth groove 174 extends toward the outer peripheral side of the first plate portion 11 . The first fourth groove 174 is provided on the same straight line as the second first groove 171 described above. That is, the first fourth groove 174 is a linear groove. The first end of the first fourth groove 174 is connected to the middle of the long lower side of the trapezoidal frame-shaped second groove 172 . The second end of the first fourth groove 174 is connected to the middle of the long lower side of the trapezoidal frame-shaped third groove 173 . The second fourth groove 174 extends toward the fourth region 40, which will be described later. The second fourth groove 174 is provided on the same straight line as the fourth first groove 171 described above. That is, the second fourth groove 174 is an arcuate groove. The first end of the second fourth groove 174 is connected to the middle of the oblique side of the trapezoidal frame-shaped second groove 172 . The second end of the second fourth groove 174 is connected to the middle of the oblique side of the trapezoidal frame-shaped third groove 173 .

In this embodiment, as described above, the fourth groove 174 is provided on the same straight line as one of the first grooves 171 . Unlike this embodiment, the fourth groove 174 may be provided so as not to be on the same straight line as any of the first grooves 171 . When the first groove 171 and the fourth groove 174 are provided on the same straight line, the melted brazing material is placed on the first outer side of the third groove 173 starting from the point where the fourth groove 174 is connected during the manufacturing process. It is easy to overflow between the area 17 and the second outer area 27 .

The cross-sectional shape, depth, and width of the fourth groove 174 may be the same as or different from the cross-sectional shape, depth, and width of the first groove 171 .

- First inner plane The first inner plane 175 is provided at a location surrounded by the first groove 171 and the second groove 172 . The number of first inner planes 175 corresponds to the number of first grooves 171 . That is, the number of first inner planes 175 in this embodiment is four. The shape of each first inner flat surface 175 is a substantially rectangular shape. The second brazing material 92 remains on the first inner flat surface 175 as shown in FIG.

· First Outer Plane The first outer plane 176 is provided at a location surrounded by the second groove 172 , the third groove 173 and the fourth groove 174 . The number of first outer planes 176 corresponds to the number of fourth grooves 174 . That is, the number of first outer planes 176 in this embodiment is two. First outer plane 176 is flush with first inner plane 175 . The shape of the first first outer plane 176 is C-shaped. The shape of the two-sided first outer plane 176 is L-shaped. The second brazing material remains on the first outer plane 176 as well as the first inner plane 175 .

[Second member]
The second member 20 is joined to the first member 10 as shown in FIG. The material and type of the second member 20 include the same materials and types as those of the first member 10 described above. The material and type of the second member 20 are preferably the same material and type as the material and type of the first member 10 . The second member 20 is composed of a sintered body made of the same iron alloy as the first member 10 in this embodiment. The second member 20 has a second plate portion 21 as shown in FIGS. 1 to 3 .

(Second board)
As with the first plate portion 11, the outer shape of the second plate portion 21 is not particularly limited as long as it is a flat annular shape, and can be selected as appropriate. The outer shape of the second plate portion 21 of this embodiment is annular. Unlike this embodiment, the outer shape of the second plate portion 21 may be a triangular ring. The second plate portion 21 has a second surface 211 and a second back surface 212 . The second surface 211 is located on the side opposite to the second back surface 212 side. The second back surface 212 faces the first back surface 112 . The second plate portion 21 has a second hole portion 213 .

<Second hole>
The axis of the second hole 213 is coaxial with the axis of the first hole 113, as shown in FIG. That is, the formation location of the second hole 213 is the position facing the first hole 113 in the second plate portion 21 . The number of second holes 213 is the same as the number of first holes 113, which is three in this embodiment. In this embodiment, the three second holes 213 are provided at substantially equal intervals on the circumference around the center of the second plate portion 21 . A type of the second hole portion 213 may be a through hole or a blind hole. The through-hole penetrates through the second plate portion 21 in the thickness direction. Thickness is the length between the second surface 211 and the second back surface 212 . That is, the thickness direction of the second plate portion 21 is the direction along the direction in which the second surface 211 and the second back surface 212 face each other. A blind hole, on the other hand, is a hole that has a bottom. A blind hole opening is provided in the second back surface 212 . The type of the second hole portion 213 of this embodiment is a through hole. The inner peripheral shape of the second hole portion 213 is the same cylindrical shape as the inner peripheral shape of the first hole portion 113 in this embodiment. The inner diameter of the second hole portion 213 is the same as the inner diameter of the first hole portion 113 .

(Second area)
The second area 25 is provided on the second rear surface 212 as shown in FIG. The size of the second region 25 is the same size as the size of the first region 15 . The planar shape of the second region 25 is a shape corresponding to the planar shape of the first region 15 . In this embodiment, the planar shape of the second region 25 is trapezoidal. Second region 25 includes a second central region 26 and a second outer region 27 .

<Second Central Area>
The second central region 26 forms a space with the first central region 16 without being brazed to the first central region 16 . That is, the second central region 26 is a non-bonded region. A second central region 26 is provided in the center of the second region 25 . The contour shape of the second central region 26 is circular or angular. The contour shape of the second central region 26 of this embodiment is circular.

In this embodiment, the second central region 26 has holes 261 . Unlike this embodiment, the second central region 26 may have a recess. The hole portion 261 or the recessed portion is provided at a location corresponding to the pedestal portion 161 . The hole portion 261 is a through hole. The recess has a bottom surface facing the pedestal portion 161 with a gap therebetween. As shown in FIG. 6, the hole 261 and the recess form a space for accommodating the first brazing material 91 during the manufacturing process. The hole 261 can also be used for inserting the first brazing material 91 during the manufacturing process. The inner dimension of the hole 261 or the opening of the recess is larger than the outer dimension of the base 161 . The contour shape of the hole 261 or the opening of the recess may be circular or angular. The contour shape of the hole 261 or the opening of the recess constitutes the contour shape of the second central region 26 . In this embodiment, the contour shape of the opening of the hole 261 is circular. The depth of the recess may be appropriately selected in consideration of the total height of the pedestal portion 161 and the height of the first brazing material 91 .

<Second outer region>
A second outer region 27 shown in FIG. 3 is brazed to the first outer region 17 . That is, the second outer region 27 is a bonding region. A second outer region 27 surrounds the second central region 26 . The second outer region 27 is continuous with the second central region 26 . The inner edge of the second outer region 27 is the boundary with the second central region 26 . In this embodiment, the inner edge of the second outer region 27 is the contour of the opening of the hole 261 . The outer edge of the first outer region 17 is the outer edge of the second region 25 . With this form, the 2nd outer side area|region 27 is comprised by the plane. In this embodiment, the second outer region 27 is not grooved.

(Third area)
The joining component 1 has a third region 30, as shown in FIGS. 1-3. The third region 30 is provided on the first rear surface 112 of the first plate portion 11 as shown in FIG. 2 and the second rear surface 212 of the second plate portion 21 as shown in FIG. The third region 30 is a portion of each of the first rear surface 112 shown in FIG. 2 and the second rear surface 212 shown in FIG. is provided in That is, the third area 30 is an area where the pinion gear is arranged.

(Fourth area)
The joining component 1 may have a fourth region 40, as shown in Figures 1-3. The fourth region 40 is provided on the first rear surface 112 of the first plate portion 11 as shown in FIG. 2 and the second rear surface 212 of the second plate portion 21 as shown in FIG. The fourth region 40 is provided on each of the first back surface 112 and the second back surface 212 at a portion where the interval between the leg portions 12 is narrow among the leg portions 12 adjacent in the circumferential direction. That is, the fourth area 40 is an area in which no pinion gear is arranged.

[Second brazing material]
As described above, inside each of the grooves of the first groove 171, the second groove 172, the third groove 173, and the fourth groove 174, and on the planes of the first inner plane 175 and the first outer plane 176. , the second brazing material 92 remains. A second brazing material 92 joins the first outer region 17 and the second outer region 27 . The larger the amount of the second brazing material 92, the easier it is to increase the bonding strength between the first outer region 17 and the second outer region 27, and by extension, the bonding strength between the first member 10 and the second member 20. . The second brazing material 92 preferably remains in each groove over 80% or more of the total length of each groove. The second brazing material 92 remains in each groove over 85% or more of the total length of each groove, further over 90% or more of the total length of each groove, particularly over 95% or more of the total length of each groove. The second brazing material 92 preferably remains in each groove for 100% of the total length of each groove, that is, over the entire length of each groove. The second brazing material 92 preferably remains on each plane over an area of 80% or more of the area of each plane. On each plane, the second brazing material 92 is left over an area of 85% or more of the area of each plane, further 90% or more of the area of each plane, particularly 95% or more of the area of each plane. preferable. The second brazing material 92 preferably remains on each plane over 100% of the area of each plane, that is, over the entire area of each plane.

As shown in FIG. 7, the second brazing material 92 has a protruding portion 921 that overflows from between the first region 15 and the second region 25 . By having the protruding portion 921 , it is possible to visually recognize that the first brazing material 91 has melted and flowed between the first outer region 17 and the second outer region 27 . Therefore, it can be easily confirmed whether the first brazing material 91 has melted. In particular, when it can be visually observed that the brazing filler metal overflows from a wide range of the sides of the third groove 173 to which the fourth groove 174 is connected, it spreads over a wide range between the first outer region 17 and the second outer region 27. I can confirm that. When the joint component 1 constructs a planetary carrier as in this embodiment, the protruding portion 921 is provided on the side where the sun gear (not shown) is not arranged or the pinion gear is not arranged. In this embodiment, the protruding portion 921 is provided closer to the outer periphery of the second plate portion 21 than the fourth region 40 on the second back surface 212 of the second plate portion 21 and the second region 25 on the second back surface 212. ing. The protruding portion 921 is not provided on the inner peripheral side of the second plate portion 21 than the third region 30 on the second back surface 212 of the second plate portion 21 and the second region 25 on the second back surface 212. .

[Production method]
The joint component 1 of this embodiment can be manufactured as follows. The first member 10 is arranged so that the end surface 122 of the leg portion 12 of the first member 10 faces upward. A second plate portion 21 is arranged on the end surface 122 of the leg portion 12 . The second plate portion 21 is arranged such that the pedestal portion 161 in the first region 15 of the end surface 122 fits inside the hole portion 261 in the second region 25 of the second rear surface 212 . Then, the first outer region 17 in the first region 15 and the second outer region 27 in the second region 25 are brought into contact with each other. A first brazing material 91 is placed on the end face 163 of the base portion 161 . The first brazing material 91 can be arranged by inserting the first brazing material 91 from the second surface 211 side of the second plate portion 21 into the hole 261 of the second central region 26 . Unlike this embodiment, when the second central region 26 has a concave portion instead of the hole 261, the first brazing material 91 is arranged on the end 313 surface of the pedestal portion 161, and then the second plate portion 21 is attached. It is placed on the end face 122 of the leg 12 . The first brazing material 91 is melted. A heating furnace can be used to melt the first brazing material 91 .

The melted brazing material flows by gravity from the pedestal 161 to the first inner flat surface 175 and the first groove 171 facing the second central region 26 . The brazing material that has flowed to the first inner plane 175 facing the second central region 26 flows between the first inner plane 175 of the first outer region 17 and the second outer region 27 . The brazing material that has flowed into the first groove 171 flows through the second groove 172, the fourth groove 174, and the third groove 173 in this order. The brazing material that has flowed into the first groove 171 and the second groove 172 flows between the first inner flat surface 175 of the first outer region 17 and the second outer region 27 . The brazing material that has flowed into the second groove 172 , the fourth groove 174 and the third groove 173 also flows between the first outer flat surface 176 and the second outer region 27 . Starting from a portion of the third groove 173 connected to the fourth groove 174, part of the brazing material overflows mainly along the sides intersecting the fourth groove 174 of the frame-shaped third groove 173 consisting of four sides. . In that state, the brazing material is solidified. The solidified brazing material remains in the first groove 171 , the second groove 172 , the third groove 173 and the fourth groove 174 . Between the first inner plane 175 and the second outer region 27 and between the first outer plane 176 and the second outer region 27, solidified braze remains. These remaining brazing filler metals constitute the second brazing filler metal 92 described above. The second brazing material 92 joins the first outer region 17 and the second outer region 27 together. The overflowed and solidified brazing filler metal constitutes the overrunning portion 921 described above.

[Effect]
In the joining component 1 of this embodiment, the first central region 16 of the first region 15 has the pedestal portion 161, so that the melted brazing material is separated from the first outer region 17 and the second outer region 27 by gravity during the manufacturing process. It is easy to spread over a wide range between In addition, the joint component 1 has the first outer region 17 of the first region 15 having the first grooves 171 to the fourth grooves 174 so that the melted brazing material can flow between the first inner plane 175 and the second inner plane 175 during the manufacturing process. It tends to spread over a wide area between the outer region 27 and between the first outer plane 176 and the second outer region 27 . Therefore, in the joint component 1 of this embodiment, the first outer region 17 and the second outer region 27 are easily brazed over a wide range. Therefore, the joint component 1 is excellent in joint strength between the first member 10 and the second member 20 .

In the joining component 1 of the present embodiment, the first outer region 17 of the first region 15 has the fourth groove 174, so that the melted brazing material can flow through the fourth groove 174 in the third groove 173 during the manufacturing process. is likely to overflow outside between the first outer region 17 and the second outer region 27. The overflowing brazing material solidifies and remains as a protruding portion 921 at the overflowed portion. Therefore, the brazing filler metal that overflows and solidifies can be visually observed in the joining part 1 . Therefore, the joint component 1 can easily grasp that the brazing material has melted.

In the joint component 1 of this embodiment, the first outer region 17 of the first region 15 extends toward the inner peripheral side of the first plate portion 11 and the fourth groove extends toward the third region 30 . It does not have four grooves. In the joint component 1 of this embodiment, the first outer region 17 has a fourth groove 174 extending to the outer peripheral side of the first plate portion 11 and a fourth groove 174 extending to the fourth region 40 . Therefore, in the manufacturing process, the melted brazing material is less likely to overflow into the inner peripheral side of the first plate portion 11 where the sun gear is arranged and the third region 30 where the pinion gear is arranged, and the first plate portion where no gear is arranged. The melted brazing material tends to overflow on the outer peripheral side of 11 and the fourth region 40 . Therefore, the joint component 1 can easily recognize that the brazing material has melted, and can prevent the brazing material from interfering with the rotation of the pinion gear and the sun gear.

[Modification 1]
As shown in FIG. 8, the joint component of the modified example differs from the joint component 1 of the above-described embodiment in the number of first grooves 171 and the number of first inner flat surfaces 175 . Other configurations are the same as those of the joint component 1 of the embodiment. The following description will focus on the differences. Explanations are omitted for similar configurations.

- First groove The number of the first grooves 171 in this example is eight. The first to fourth first grooves 171 are the same as the first to fourth first grooves 171 in the embodiment. The fifth first groove 171 is provided between the first first groove 171 and the fourth first groove 171 . The sixth first groove 171 is provided between the first first groove 171 and the third first groove 171 . The seventh first groove 171 is provided between the second first groove 171 and the third first groove 171 . The eighth first groove 171 is provided between the second first groove 171 and the fourth first groove 171 . Each of the fifth to eighth first grooves 171 extends from the pedestal portion 161 toward each corner of the trapezoidal frame-shaped second groove 172 .

- First inner plane The number of first inner planes 175 is eight. The shape of each first inner flat surface 175 is roughly triangular.

[Effect]
Like the joint component 1 of the embodiment, the joint component of the modification is excellent in the joint strength between the first member and the second member, and it is possible to easily grasp that the brazing filler metal has melted.

The present invention is not limited to these examples, but is indicated by the scope of the claims, and is intended to include all modifications within the meaning and scope of equivalents of the scope of the claims.

For example, the first member may have an annular first plate portion, and the second member may have an annular second plate portion and a plurality of columnar legs. In this case, the end face of the leg may be formed of the above-described second region, and the region of the first plate facing the end face of the leg may be formed of the above-described first region. The third groove in the first region is composed of a bottom surface, a first side wall, and a second side wall, like the first groove described above.

Further, as described above, the first plate portion and the second plate portion may not be provided with the fourth region. When the joining parts construct the planetary carrier as in the embodiment described above, the number of legs may be three. Between the legs adjacent in the circumferential direction, the above-described third area is provided instead of the above-described fourth area. In this case, the fourth groove should just extend toward the outer peripheral side of the first plate portion.

<<Note>>
The present disclosure further discloses the following remarks in relation to the above-described embodiments.

[Appendix 1]
A first member to be brazed with a mating member,
having a first region including a first central region and a first outer region surrounding the first central region;
The first central region is a region that forms a space with the mating member without being brazed to the mating member,
The first outer region is a region brazed to the mating member,
The first outer region is
a plurality of first grooves radially extending from the inner edge side toward the outer edge side of the first outer region;
a frame-shaped second groove connecting the outer edge side ends of each of the plurality of first grooves;
a frame-shaped third groove provided on the outer edge of the first outer region and surrounding the second groove;
a fourth groove provided to communicate with the second groove and the third groove;
a first inner plane provided between the plurality of first grooves;
a first outer planar surface disposed between the second groove, the third groove, and the fourth groove;
First member.

Supplementary Note 1 above can construct a joint component according to one aspect of the present disclosure described above.

Reference Signs List 1 joining part 10 first member 11 first plate portion 111 first surface 112 first back surface 113 first hole portion 12 leg portion 121 side surface 122 end surface 15 first region 16 first central region 161 pedestal Part 162 Side 163 End face 17 First outer region 171 First groove 172 Second groove 173 Third groove 174 Fourth groove 175 First inner plane 176 First outer plane 20 Second member 21 Second Plate portion 211 Second surface 212 Second back surface 213 Second hole 25 Second region 26 Second central region 261 Hole 27 Second outer region 30 Third region 40 Fourth region 91 First brazing material, 92 second brazing material, 921 protruding part

Claims (5)

A joint component comprising a first member and a second member joined to the first member,
the first member has a first region including a first central region and a first outer region surrounding the first central region;
the second member has a second region including a second central region and a second outer region surrounding the second central region;
The first central region and the second central region form a space therebetween without being brazed together,
The first outer region and the second outer region are brazed together,
The first outer region is
a plurality of first grooves radially extending from the inner edge side toward the outer edge side of the first outer region;
a frame-shaped second groove connecting the outer edge side ends of each of the plurality of first grooves;
a frame-shaped third groove provided on the outer edge of the first outer region and surrounding the second groove;
a fourth groove provided to communicate with the second groove and the third groove;
a first inner plane provided between the plurality of first grooves;
a first outer planar surface disposed between the second groove, the third groove, and the fourth groove;
joining parts. The first central region has a pedestal projecting toward the second central region,
the position of the end face of the pedestal is higher than the first inner plane,
2. The joining component according to claim 1, wherein said second central region has a hole or recess provided at a location corresponding to said pedestal. The first member is
an annular first plate;
and a plurality of columnar legs spaced apart in the circumferential direction of the first plate,
The second member has an annular second plate portion,
each of the plurality of legs,
a side surface connected to the first plate;
an end surface connected to an end of the side surface opposite to the side connected to the first plate,
The end face is configured with the first region,
The second plate portion is
a plurality of the second regions provided at intervals in the circumferential direction of the second plate;
a third region in which a movable member is disposed between the second regions adjacent in the circumferential direction;
a fourth region in which the movable member is not arranged among the second regions adjacent in the circumferential direction;
The joining component according to claim 1 or 2, wherein the fourth groove extends toward the fourth area side of the first outer area or the outer peripheral side of the first plate portion. The joint component according to any one of claims 1 to 3, wherein the fourth groove is provided on the same straight line as one of the plurality of first grooves. 5. The joining component according to any one of claims 1 to 4, wherein the width of each of said plurality of first grooves is uniform in the longitudinal direction.

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