JP6623927B2 - Press-fitting method of housing and press-fitting member - Google Patents

Description

  The technology disclosed in this specification relates to a housing and a press-fitting method of a press-fitting member.

  2. Description of the Related Art Conventionally, there has been known a resin housing having an accommodating recess in which a press-fitting member such as a nut or a collar is press-fitted and accommodated, in which a plurality of protrusions are provided on an inner surface of the accommodating recess. For example, Japanese Unexamined Patent Application Publication No. 2010-139018 (Patent Document 1) discloses a resin product having a through hole (accommodation recess) into which a collar is press-fitted, and in which a plurality of peaks (projections) are formed. It has been disclosed. In this resin product, a plurality of peaks are crushed by the collar as the collar is pressed into the through-hole, and the collar is pressed and held between the plurality of crushed peaks by the reaction force, and the collar is pressed in the through-hole. Effectively fixed.

JP 2010-139018 A

  However, in the resin product disclosed in Patent Literature 1, at the time of press-fitting of the collar, a plurality of peaks may not be crushed evenly due to work variation, and may be crushed in an uneven manner. When a plurality of peaks are crushed in a biased manner in this manner, the collar is displaced from a design position in a plane direction orthogonal to the axial direction (press-fitting direction) of the collar in the through hole, and the positioning accuracy of the collar in the through hole is reduced. There is a risk of lowering.

  The technology disclosed in the present specification has been created in view of the above-described problem, and has as its object to increase the positioning accuracy of a press-fitted member to be press-fitted.

  The technology disclosed in the present specification is a resin housing having a housing recess in which a polygonal press-fitting member is press-fitted in the axial direction and housed, and the housing recess has an opening in a plan view. Is a polygonal shape similar to a plan view of the press-fitting member, and a first portion of the inner side surface of the housing recess that protrudes inside the housing recess so as to extend in the axial direction on a part of the inner surfaces. A second protrusion protruding inward of the housing recess on a second non-parallel inner surface provided with the protrusion and facing the inner surface provided with the first protrusion; The first protruding portion is crushed when the press-fitting member is press-fitted by making the width smaller than the second protruding portion, and the second protruding portion is pressed when the press-fitting member is press-fitted. In the plane direction perpendicular to the axial direction About housing having a positioning portion for positioning the piezoelectric penetration member in the planar direction by.

  In the above housing, when the press-fitting member is press-fitted into the housing recess, the first protruding portion is crushed, and the outer peripheral surface of the press-fitting member abuts the positioning portion of the second protruding portion in a planar direction. At this time, since the second protrusion is provided on at least two non-parallel inner surfaces of the inner surfaces of the housing recess, the press-fitting member is positioned in the housing recess in at least two different plane directions by the positioning portion. Is done. By further press-fitting the press-fitting member into the accommodation recess from the state where the press-fitting member is positioned, as the press-fitting member is press-fit while the movement of the press-fitting member in the planar direction is regulated by the positioning portion. The first protrusion is further crushed by the press-fitting member.

  Since the second protrusion is provided on the inner surface facing the inner surface on which the first protrusion is provided, the second protrusion is crushed by the reaction force of the crushed first protrusion. The press-fitting member is pressed and sandwiched between the press-fitted first protrusion and the press-fitting member is fixed in the accommodation recess. For this reason, the press-fitting member can be press-fitted into the housing recess and housed in a state where the press-fitting member is positioned in the plane direction regardless of the crushing state of the first protrusion. As a result, in the above housing, the positioning accuracy of the press-fitted member to be press-fitted can be improved.

  In the above-mentioned housing, the first projecting portion is inclined from the opening side of the housing recess toward the bottom side of the housing recess toward the inside of the housing recess and the inclined surface which comes into contact with the press-fitting member when the press-fitting member is press-fitted. You may have it on the side.

  According to this configuration, at the time of press-fitting the press-fitting member into the housing recess, first, while the press-fitting member is positioned in the planar direction by the positioning portion of the second protrusion, the inclination of the first protruding portion provided on the opening side of the housing recess. The press-fit member contacts the surface. Then, by pressing the press-fitting member into the housing recess, the press-fitting member tends to be guided to the bottom side and the inside of the housing recess by the inclined surface, so that the first protrusion is easily crushed by the press-fitting member. As described above, it is possible to provide a specific configuration for easily crushing the first projection while positioning the press-fitting member in the planar direction by the second projection.

  In the housing, the second protrusion may be provided so as to extend in the axial direction from an opening side of the housing recess to a bottom side.

  According to this configuration, the press-fitting member abuts on the positioning portion continuously from the start of press-fitting of the press-fitting member into the housing recess to the end of the press-fitting, and is positioned in the planar direction. For this reason, the positioning accuracy of the press-fitting member can be further improved.

  In the housing described above, the second protrusion may be provided on at least two inner surfaces of the inner surfaces of the housing recesses that are orthogonal to each other.

  According to this configuration, the press-fitting member that is press-fitted into the housing recess can be positioned at least in the vertical direction and the horizontal direction by the positioning portion of the second protrusion. For this reason, the positioning accuracy of the press-fitting member can be further improved.

  In the housing described above, the positioning portion may be formed in a planar shape that comes into contact with the outer peripheral surface of the press-fitting member.

  With this configuration, it is possible to position the press-fitting member more effectively than when the positioning portion contacts the outer peripheral surface of the press-fitting member with a line when the press-fitting member is press-fitted into the accommodation recess.

  In the above-described housing, a plurality of the second protrusions may be provided for one inner surface.

  For example, when one large second protrusion is provided on one inner surface, the dimensional accuracy of the positioning portion in the manufacturing process of the second protrusion (for example, when the positioning portion is planar, its flatness accuracy) It is difficult to secure. According to the above configuration, for example, by providing a plurality of second protrusions having a small width on one inner surface, the dimensional accuracy of the positioning unit can be improved. As a result, the positioning accuracy of the press-fitting member can be further improved.

  Another technique disclosed in this specification is a press-fitting method of a press-fitting member that press-fits a press-fitting member having a polygonal shape in a plan view in an axial direction into a housing recess provided in a resin housing and accommodates the press-fitting member. The housing recess has a polygonal shape whose opening in plan view is similar to the plane view of the press-fitting member, and among the inner surfaces of the housing recess, a part of the inner surfaces extends in the axial direction. A first protrusion protruding inward of the housing recess is provided, and the housing recess is provided on at least two other non-parallel inner surfaces facing the inner surface on which the first protrusion is provided. A second protruding portion protruding inwardly of the press-fitting member is provided, and when the press-fitting member is press-fitted, the outer peripheral surface of the press-fitting member is brought into contact with the second protruding portion so that the press-fitting member is in a plane direction orthogonal to the axial direction. The first protrusion is pressed into the press-fit portion On Pumping method for press-fitting member to be crushed by.

  According to the above-described press-fitting method of the press-fitting member, the second protrusion is provided on at least two non-parallel inner surfaces of the inner surfaces of the housing recess. Can be positioned in at least two different plane directions by the positioning portion. Then, by pressing the press-fitting member into the housing recess while crushing the first protruding portion by the press-fitting member in the state where the press-fitting member is positioned in this manner, the reaction force of the crushed first protruding portion causes The press-fitting member is pressed and sandwiched between the second protrusion and the crushed first protrusion, and the press-fitting member is fixed in the accommodation recess. For this reason, the press-fitting member can be press-fitted into the accommodation recess in a state where the press-fitting member is positioned in the plane direction regardless of the crushing mode of the first protrusion, and the positioning accuracy of the press-fitted member to be press-fitted is improved. Can be.

  According to the technology disclosed in this specification, the positioning accuracy of a press-fitted member to be press-fitted can be improved.

FIG. 2 is a perspective view of a housing according to the first embodiment. Front view of housing FIG. 2 is an enlarged front view of a housing recess. Sectional view of the IV-IV section in FIG. Perspective view of press-fit member Front view of the housing in which the press-fitting member is press-fitted. Sectional view of section VII-VII in FIG. Front view which expanded the accommodation recessed part of the housing which concerns on Embodiment 2. Front view which expanded the accommodation recessed part of the housing which concerns on Embodiment 3. Front view which expanded the accommodation recessed part of the housing which concerns on Embodiment 4.

(Construction of housing)
Embodiments will be described with reference to the drawings. In the present embodiment, for example, in a hybrid vehicle or an electric vehicle, a housing 1 that forms a part of a terminal block that electrically connects an inverter (not shown) and a motor (not shown) will be described. Note that, in a part of each drawing, an X axis, a Y axis, and a Z axis which are orthogonal to each other are shown, and each axis direction is drawn so as to be the direction shown in each drawing. Hereinafter, the lower right side of FIG. 1 is defined as the front, the X axis direction is defined as the front-rear direction of the housing 1, the upper right side of FIG. 1 is defined as the right side, the Y axis direction is defined as the left and right direction of the housing 1, and the upper side of FIG. The Z-axis direction will be described as the vertical direction of the housing 1.

  The housing 1 of the present embodiment is made of synthetic resin having excellent rigidity, and has an upper portion serving as a fitting portion 12 to be fitted with another housing or the like, as shown in FIGS. 1 and 2. The lower part is a connecting part 14 to which a connecting member extending from the inverter side is connected. The fitting portion 12 of the housing 1 is provided so as to project slightly forward from the connection portion 14.

  As shown in FIG. 2, the connection portion 14 of the housing 1 has a substantially square shape when viewed from the front, and a nut (an example of a press-fitting member, see FIG. 5 and the like) 20 having a substantially square shape in a plan view is press-fitted. It has a housing recess 30 to be housed. A groove 14A is provided below the housing recess 30 so as to open forward and extend vertically in a groove shape. The lower end of the groove 14A can be fitted with a connector or the like extending from the inverter.

  Here, first, the nut 20 housed in the housing recess 30 will be described with reference to FIG. The nut 20 has a metal block shape, and has a substantially square shape in plan view with four rounded corners. At a substantially central portion of the nut 20, a fastening hole 22 that penetrates the nut 20 in the axial direction (front-rear direction) is provided. In this fastening hole 22, in a state where a plurality of bus bars (not shown) and the like are arranged on the front surface 20A of the nut 20, a bolt (not shown) is screwed after being inserted into an insertion hole provided in each bus bar. Each bus bar is bolted to the nut 20, and each bus bar is electrically connected to each other.

  Next, the configuration of the accommodation recess 30 will be described in detail. As shown in FIGS. 2 and 3, the housing recess 30 has a substantially square shape in which the opening 30 </ b> A is slightly larger in plan view than the housing nut 20 to be housed. Therefore, four inner side surfaces 30B are provided in the accommodation recesses 30, respectively. As shown in FIG. 3 and FIG. 4, the bolt is screwed into the fastening hole 22 of the nut 20 after the nut 20 is press-fitted into the housing recess 30 at a substantially central portion of the bottom surface 30 </ b> C of the housing recess 30. A recessed bolt accommodation portion 32 is provided for accommodating the tip of the bolt that has penetrated the fastening hole 22 when the bolt is inserted.

  As shown in FIG. 3, two adjacent inner surfaces 30 </ b> B (the inner surfaces located on the upper side and the right side in FIG. 3) among the four inner surfaces 30 </ b> B in the accommodation recess 30 are respectively provided inside the accommodation recess 30. A plurality of first protrusions 41 slightly projecting toward each other are provided apart from each other. On the other hand, among the four inner side surfaces 30B, the other two adjacent inner side surfaces 30B (the inner side surfaces located on the lower side and the left side in FIG. 3) each have a plurality of portions slightly projecting toward the inside of the accommodation recess 30. Are provided apart from each other. These two inner surfaces 30B provided with the second protrusions 42 are non-parallel because they are adjacent to each other at substantially 90 degrees, and face the inner surfaces 30B provided with the first protrusions 41, respectively. ing.

  As shown in FIGS. 3 and 4, each of the first protrusions 41 provided on the two inner side surfaces 30 </ b> B of the housing recess 30 extends in the front-rear direction (from the shaft 30 </ b> A) from the opening 30 </ b> A side to the bottom surface 30 </ b> C side of the housing recess 30. Direction), and protrudes toward the inside of the housing recess 30 and has a tapered shape with a rounded tip. As shown in FIG. 1, each of the first protrusions 41 has a portion located on the side of the opening 30 </ b> A of the housing recess 30 from the opening 30 </ b> A of the housing recess 30 toward the bottom surface 30 </ b> C. An inclined surface 41A that is inclined inward is provided. The operation of the inclined surface 41A and the operation of each first protrusion 41 will be described later in detail.

  As shown in FIGS. 3 and 4, each second protrusion 42 provided on the other two inner side surfaces 30 </ b> B of the housing recess 30 extends in the front-rear direction (from the opening 30 </ b> A side to the bottom surface 30 </ b> C side of the housing recess 30). (In the axial direction), and has a substantially rectangular shape that is horizontally long in plan view. In each of the second projecting portions 42, a portion directed toward the inside of the housing recess 30 is a positioning portion 42A having a planar shape (see FIG. 1). More specifically, the positioning portion 42A of each of the second protrusions 42 is a flat surface that faces in parallel with the outer peripheral surface 20B of the nut 20 when the nut 20 is pressed into the housing recess 30, and the opening 30A of the housing recess 30 is formed. It is provided from the side to the bottom surface 30C side. The operation of the positioning portion 42A and the operation of each second protrusion 42 will be described later in detail.

  As shown in FIG. 3, the width of each first protrusion 41, that is, the dimension in the direction perpendicular to both the protrusion direction and the extension direction of each first protrusion 41 is larger than the width of each second protrusion 42. Is also reduced, and is crushed by being pressed by the nut 20 when the nut 20 is pressed into the housing recess 30. In addition, as shown in FIG. 3, each of the first protrusions 41 and each of the second protrusions 42 are provided in the housing recess 30 so as to face each other.

(Operation of housing)
The above is the configuration of the housing 1 according to the present embodiment. Next, the operation thereof will be described. The above-described nut 20 having a substantially square shape in a plan view is press-fitted into the housing recess 30 of the housing 1 with the axial direction (front-rear direction) as the press-fit direction. When the nut 20 is press-fitted and accommodated in the accommodation recess 30, first, on the opening 30 </ b> A side of the accommodation recess 30, a part of two adjacent outer peripheral surfaces 20 </ b> B of the nut 20 is respectively positioned by the positioning portion 42 </ b> A of each second protrusion 42. Against the surface. Thereby, the nut 20 is positioned in the up-down direction and the left-right direction in the accommodation recess 30 by each positioning part 42A.

  In the state where the nut 20 is positioned by the positioning portions 42A on the opening 30A side of the housing recess 30 in this manner, a part of the other two adjacent outer peripheral surfaces 20B of the nut 20 that does not contact the positioning portions 42A. Abut on the inclined surface 41A of each of the first protrusions 41. When the nut 20 is pressed rearward from this state (toward the bottom surface 30C of the housing recess 30), the nuts 20 are restricted by the inclined surface 41A while the movement of the nut 20 in the vertical and horizontal directions is restricted by the positioning portion 42A. 20 tries to be guided to the bottom surface 30C side and the inside of the accommodation recess 30.

  As described above, when the nut 20 is pressed backward while the nut 20 is being guided by the inclined surface 41A, the nut 20 is moved from the inner side (rear side) of the inclined surface 41A by the nut 20 as the nut 20 is pressed. A strong pressing force is applied to the one protrusion 41, and each first protrusion 41 is crushed by the nut 20. And since each 2nd protrusion part 42 is provided in the inner surface 30B which opposes the inner surface 30B in which each 1st protrusion part 41 was provided, by the reaction force of the said 1st protrusion part 41 crushed, The nut 20 is pressed and clamped between the second protrusion 42 and the crushed first protrusion 41, and the nut 20 is fixed in the accommodation recess 30 as shown in FIGS. 6 and 7.

(Effect of this embodiment)
As described above, in the housing 1 of the present embodiment, when the nut 20 is pressed into the housing recess 30 provided in the housing 1, the nut 20 is moved vertically and horizontally by the positioning portions 42 </ b> A of the second protrusions 42. While being positioned, each of the first protrusions 41 is crushed by the nut 20, and the nut 20 is fixed in the accommodation recess 30. For this reason, the nut 20 can be press-fitted into the housing recess 30 and housed in a state where the nut 20 is positioned in the up-down direction and the left-right direction regardless of the crushing state of each first protrusion. As a result, the positioning accuracy of the nut 20 to be press-fitted can be improved.

  Further, in the housing 1 of the present embodiment, the inclined surface 41 </ b> A is provided on each of the first protrusions 41 on the opening 30 </ b> A side of the accommodation recess 30. Accordingly, when the nut 20 is press-fitted into the housing recess 30, the nut 20 tends to be guided toward the bottom surface 30 </ b> C side and the inside of the housing recess 30 by the slope 41 </ b> A, and thus such a slope 41 </ b> A is not provided. The first projection 41 is more easily crushed by the nut 20 than in the case.

  Further, in the housing 1 of the present embodiment, each second protrusion 42 is provided so as to extend in the front-rear direction from the opening 30A side of the housing recess 30 to the bottom surface 30C side. With such a configuration, the nut 20 abuts on each positioning portion 42A continuously from the start of press-fitting of the nut 20 to the housing recess 30 to the end of press-fitting, and is positioned vertically and horizontally. For this reason, the positioning accuracy of the nut 20 can be further improved.

  Further, in the housing 1 of the present embodiment, each of the second protrusions 42 is provided on two inner side surfaces 30B orthogonal to each other among the inner side surfaces 30B of the housing recess 30. For this reason, the nut 20 press-fitted into the housing recess 30 can be positioned in the vertical and horizontal directions by the positioning portion 42A of the second protrusion 42, and the positioning accuracy of the nut 20 can be further enhanced.

  Further, in the housing 1 of the present embodiment, the positioning portion 42A of each of the second projecting portions 42 has a planar shape that comes into contact with the outer peripheral surface 20B of the nut 20 in a plane. With such a configuration, it is possible to position the nut 20 more effectively than when the positioning portion 42A abuts on the outer peripheral surface 20B of the nut 20 with a line when the nut 20 is pressed into the housing recess 30. it can.

  For example, when one large second protruding portion 42 is provided on one inner side surface 30B of the accommodation concave portion 30, the dimensional accuracy of the positioning portion 42A in the manufacturing process of the second protruding portion 42, in other words, is flat. It is difficult to ensure accuracy. On the other hand, in the configuration of the present embodiment, since the two second protrusions 42 having a small width are provided for one inner surface 30B of the housing recess 30, the dimensional accuracy of the positioning portion 42A can be improved. . As a result, the positioning accuracy of the nut 20 can be further improved.

<Embodiment 2>
Embodiment 2 will be described with reference to FIG. The second embodiment is different from the first embodiment in the shape of the opening 130A of the housing recess 130. The other configuration is the same as that of the first embodiment, and the description of the configuration and operation will be omitted. In FIG. 8, the portions indicated by reference numerals obtained by adding 100 to the numeral portions of the reference numerals in FIG. 3 are the same as the portions described in the first embodiment.

  In the housing according to the second embodiment, as shown in FIG. 8, the opening 130A of the housing recess 130 has a substantially regular octagonal shape in plan view. Therefore, the nut having a substantially regular octagonal shape in a plan view is press-fitted and housed in the housing recess 130. Of the inner side surfaces 130B of the housing recess 130, five consecutively adjacent inner side surfaces 130B are provided with first protrusions 141, respectively, and the other three inner side surfaces 130B are respectively provided with second protrusions 142. Is provided. The shape, arrangement, and the like of each of the first protrusions 141 and each of the second protrusions 142 are the same as those of the first embodiment.

  Also in the configuration as in the present embodiment, when the nut is press-fitted into the housing recess 130, the nut is moved up and down, left and right, and obliquely by the positioning portion 142A of each second projection 142 (upper right and lower left in FIG. 8). Direction). Then, as the nut is press-fitted while the nut is positioned as described above, each first protrusion 141 is crushed by the nut, and the nut is fixed in the housing recess 130. As a result, the positioning accuracy of the nut to be press-fitted can be improved.

<Embodiment 3>
Embodiment 3 will be described with reference to FIG. The third embodiment differs from the first embodiment in the shape of the second protrusion 242 provided on the inner side surface 230B of the housing recess 230. The other configuration is the same as that of the first embodiment, and the description of the configuration and operation will be omitted. In FIG. 9, the portions indicated by reference numerals obtained by adding 200 to the numeral portions of the reference numerals in FIG. 3 are the same as the portions described in the first embodiment.

  In the housing according to the third embodiment, as illustrated in FIG. 9, the shape of the second protrusion 242 provided on the inner side surface 230 </ b> B of the housing recess 230 is such that the arc side faces the inside of the housing recess 230 in plan view. It has a substantially semicircular shape. For this reason, the positioning portion 242A of the second protrusion 242 abuts on the outer peripheral surface of the nut on a line parallel to the front-rear direction when the nut is press-fitted into the housing recess 230. The shape and arrangement of each of the first protrusions 241 and the arrangement of each of the second protrusions 242 are the same as those of the first embodiment.

  Also in the configuration as in the present embodiment, when the nut is press-fitted into the housing recess 230, the positioning portion 242A of each of the second protrusions 242 formed in a semicircular shape in plan view, that is, the substantially central portion of the arc-shaped portion Thereby, the nut is positioned in the vertical and horizontal directions. Then, as the nut is press-fitted while the nut is positioned as described above, each of the first protrusions 241 is crushed by the nut, and the nut is fixed in the housing recess 230. As a result, the positioning accuracy of the nut to be press-fitted can be improved.

<Embodiment 4>
Embodiment 4 will be described with reference to FIG. The fourth embodiment is different from the first embodiment in the size of the second protrusion 342 provided on the inner side surface 330B of the housing recess 330. The other configuration is the same as that of the first embodiment, and the description of the configuration and operation will be omitted. In FIG. 10, the portions indicated by reference numerals obtained by adding 300 to the numeral portions of the reference numerals in FIG. 3 are the same as the portions described in the first embodiment.

  In the housing according to the fourth embodiment, as shown in FIG. 10, one second protruding portion 342 is provided on one inner surface 330 </ b> B of the housing recess 330. Further, the second protrusion 242 is provided over substantially the entire area of the inner side surface 330B, and the width thereof is larger than that of the first embodiment. Therefore, when the nut is press-fitted into the housing recess 330, the area where the positioning portion 342A of the second projecting portion 342 contacts the outer peripheral surface of the nut is larger than that in the first embodiment. The shape, arrangement, and the like of each first protrusion 341 are the same as those of the first embodiment.

  Also in the configuration as in the present embodiment, when the nut is press-fitted into the housing recess 330, the positioning portion 342A of each second projecting portion 342 comes into contact with most of the two outer peripheral surfaces of the nut, whereby the positioning portion 342A This effectively positions the nut vertically and horizontally. Then, as the nut is press-fitted while the nut is positioned as described above, each first protruding portion 341 is crushed by the nut, and the nut is fixed in the accommodation recess 330. As a result, the positioning accuracy of the nut to be press-fitted can be improved.

Modifications of the above embodiments are listed below.
(1) In each of the above embodiments, a metal nut is illustrated as an example of the press-fitting member. However, the press-fitting member is not limited to the nut, and may be, for example, a metal collar or the like.

(2) In each of the above-described embodiments, the configuration in which the opening of each storage recess is formed in a substantially square shape in plan view or a substantially octagonal shape in plan view is illustrated, but a shape similar to a polygonal nut in plan view in plan view. The shape of the opening of each accommodation recess is not limited.

(3) In each of the above embodiments, the configuration in which the inclined surface is provided in each of the first protruding portions is illustrated, but a configuration in which the inclined surface is not provided in each of the first protruding portions may be employed.

(4) In each of the above embodiments, a plurality of first protrusions are provided on one inner surface of the housing recess, and a plurality or one second protrusion is provided on one inner surface of the housing recess. Although the illustrated configuration has been exemplified, the numbers of the first protrusions and the second protrusions provided on one inner surface of the accommodation recess are not limited.

(5) In each of the above embodiments, the configuration in which each of the second protruding portions provided on the inner side surface of the accommodation concave portion has a substantially rectangular shape in plan view or a substantially semicircular shape in plan view has been described. May have a positioning portion capable of positioning the nut in a planar direction when the nut is press-fitted into the housing recess, and its shape is not limited. For example, each of the second protrusions may have a tapered shape that protrudes toward the inside of the accommodation recess like each of the first protrusions illustrated in each embodiment.

(6) In the above embodiment, the housing constituting a part of the terminal block for connecting the inverter and the motor has been described as an example. However, a housing used for other purposes may be used.

  As mentioned above, although each embodiment was described in detail, these are only illustrations and do not limit a claim. The technology described in the claims includes various modifications and alterations of the specific examples illustrated above.

DESCRIPTION OF SYMBOLS 1 ... Housing 20 ... Nut 30 ... Housing recess 30A ... Opening 30B ... Inner surface 41 ... 1st protrusion 41A ... Inclined surface 42 ... 2nd protrusion 42A ... Positioning part

Claims (9)

A resin housing having a housing recess in which a press-fit member having a polygonal shape in a plan view is housed by being press-fitted in its axial direction,
The housing recess has a bottom surface, a plurality of inner side surfaces, and an opening, and the press-fitting member is press-fitted from the opening side toward the bottom surface side. Is a polygonal shape similar to the plan view of
Among the plurality of inner surfaces of said housing recess, a portion of the inner surface, the first protrusion is provided protruding to the inside of the accommodating recess in a manner extending in the axial direction, the other at least 2 One of the inner surface facing the inner surface of the first projecting portion is provided a non-parallel inner faces, a second protrusion protruding inwardly of the housing recess is provided, wherein the first protrusion The end on the opening side of the portion is located closer to the bottom surface than the end on the opening side of the second protrusion,
The first protruding portion is crushed at the time of press-fitting the press-fitting member by making the width smaller than the second protruding portion,
The second projecting portion has a positioning portion for positioning said press-fitting member in the planar direction by abutting the planar direction orthogonal to the outer peripheral surface and the axial direction of the press-fitting member when press-fitting the press-fitting member, a housing. Wherein the first protrusion has the press-fitting member and the inclined surface that abuts upon stuffing of the press-fitting member with inclined from the opening side of the housing recess on the inside of the housing recess toward the bottom surface to the opening side The housing of claim 1. The second protrusion, over the bottom surface side from the opening side of the accommodation recess is provided in a form that extends in the axial direction, the housing according to claim 1 or claim 2. The second projecting portion is provided on two of the inner surface perpendicular least one another of the inner surface of the accommodating recess, a housing according to any one of claims 1 to 3.   The housing according to any one of claims 1 to 4, wherein the positioning portion has a planar shape that comes into contact with an outer peripheral surface of the press-fitting member. The housing according to claim 5, wherein the positioning portion is a flat surface facing in parallel with an outer peripheral surface of the press-fitting member when the press-fitting member is press-fitted into the housing recess. The press-fitting member is pressed and sandwiched between the second protrusion and the crushed first protrusion by a reaction force of the crushed first protrusion, and the press-fitting member is fixed in the accommodation recess. 7. The housing of claim 6, wherein said housing is made. The housing according to any one of claims 1 to 7 , wherein a plurality of the second protrusions are provided for one of the inner side surfaces. A press-fitting method of a press-fitting member for press-fitting and housing a press-fitting member having a polygonal shape in plan view in an axial direction thereof into a housing recess provided in a resin housing,
The housing recess has a bottom surface, a plurality of inner side surfaces, and an opening, and the press-fitting member is press-fitted from the opening side toward the bottom surface side. Is a polygonal shape similar to the plan view of
Among the plurality of inner surfaces of said housing recess, a portion the inner surface of, the first protrusion is provided protruding to the inside of the accommodating recess in a manner extending in the axial direction, the other at least 2 One of the inner surface facing the inner surface of the first projecting portion is provided a non-parallel inner faces, a second protrusion protruding inwardly of the housing recess is provided, wherein the first protrusion The end on the opening side of the portion is located closer to the bottom surface than the end on the opening side of the second protrusion,
Upon stuffing of the press-fitting member, while positioning the press-fitting member by causing the outer peripheral surface of the press-fitting member into contact with the second projecting portions in a planar direction perpendicular to the axial direction, the press-fitting the first protrusion A press-fitting method of a press-fitting member crushed by a member.

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