JP6081189B2 - Slip joint and method for manufacturing slip joint - Google Patents

Description

The present invention relates to a slip joint that folds and supports a webbing in a vehicle seat belt device and a method for manufacturing the slip joint .

  In the slip joint disclosed in Patent Document 1 (referred to as “through anchor” in Patent Document 1), the through hole through which the webbing passes in the slip joint body (referred to as “anchor plate” in Patent Document 1). A sliding contact portion (referred to as “guide piece” in Patent Document 1) in which the webbing is slidably contacted with the inner peripheral portion of the through-hole through which the webbing passes through the inner peripheral portion is insert-molded. This slip joint body has an assembly claw or the like engaged with a predetermined portion of the outer peripheral portion in a state where the lower portion is housed in the housing portion formed in the design portion (referred to as “cover” in Patent Document 1). Thus, the slip joint body is attached to the design portion.

Japanese Unexamined Patent Publication No. 2012-101642

  As described above, the design portion and the slip joint body are fixed by engagement of an assembly claw or the like. Such an assembly claw is elastically deformed, so that the engagement with the slip joint body is released.

In view of the above facts, an object of the present invention is to provide a slip joint and a slip joint manufacturing method capable of firmly fixing a design portion and a slip joint body.

The slip joint according to the first aspect of the present invention is provided in a slip joint main body having a main body side through-hole formed therethrough and on the vehicle interior side of the slip joint main body , and the longitudinal direction is along the width direction of the webbing. The main portion has a width direction along the thickness direction of the webbing, and the main portion through which the webbing passes, and the main portion so that the main portion is bent or curved from a longitudinal end portion of the main portion to one side in the width direction of the main portion. The design part side through hole facing the main body side through hole is formed in the penetrating direction, and the main body side through hole and the design part side through hole are formed. and the design portion of the overlapping webbing passing portion said webbing passes than said design portion is formed over the entire inner periphery of the webbing passing portion by a low coefficient of friction plastic material, prior to the surface The webbing is in sliding contact and spans at least part of the inner peripheral part of the design part side through hole and at least part of the inner peripheral part of the main part side through hole in the facing direction of the slip joint body and the design part. A sliding contact portion that is provided and is in close contact with both the slip joint main body and the design portion, and the design portion is fixed to the slip joint main body.

  In the slip joint according to the first aspect of the present invention, the design portion is provided on the vehicle interior side of the slip joint body. A body-side through hole is formed through the slip joint body, and a design section side through-hole is formed through the design section. The main body side through hole and the design part side through hole are opposed to each other in the penetrating direction, and a portion where the main body side through hole and the design part side through hole overlap in each penetrating direction is a webbing passage part. The webbing constituting the device passes.

On the other hand, the slip joint according to the present invention includes a sliding contact portion formed of a synthetic resin material having a lower coefficient of friction than the design portion. The sliding contact portion is Re et disposed so as to straddle the opposing direction of the slip joint body and the design portion and at least a portion of the inner peripheral portion of at least a portion and the design portion side through-hole of the inner peripheral portion of the main body through hole The webbing is in sliding contact with the surface of the sliding contact portion. Since the synthetic resin material constituting the sliding contact portion as described above has a lower coefficient of friction than the design portion, the webbing can smoothly pass through the webbing passage portion when the webbing is in sliding contact with the surface of the sliding contact portion.

Further, as described above, the sliding contact portion includes at least a part of the inner peripheral part of the main body side through hole and at least a part of the inner peripheral part of the design part side through hole in the opposing direction of the slip joint main body and the design part. It is provided to straddle and is in close contact with both the slip joint body and the design part . For this reason, the design portion can be strongly fixed to the slip joint body by the sliding contact portion.

Further , according to the slip joint according to the present invention, the webbing passage portion, which is a portion where the main body side through hole formed in the slip joint main body and the design portion side through hole formed in the design portion overlap, is the main portion and the extension portion. It is comprised including. The sliding contact part is formed not only on the lower part of the main part of the webbing passage part but also on the extension part. For this reason, even if the webbing that normally passes through the main part moves in the longitudinal direction of the main part and reaches the extension part, the webbing comes into sliding contact with the sliding contact part formed in the extension part. Thus, the webbing can smoothly pass through the webbing passage part, and the webbing can easily return to the main part side.

Furthermore, according to the slip joint which concerns on this invention, a sliding contact part is formed in the whole region of the inner peripheral side of a webbing passage part. For this reason, the range which a sliding contact part pinches | interposes a design part and a slip joint main body becomes wide, and can fix a design part to a slip joint main body more strongly by a sliding contact part.

  Moreover, since the sliding contact part is also formed on the upper part of the main part, for example, the webbing that passes through the webbing passage part rises, or the webbing has a curve that undulates in its width direction, Even when the webbing comes into contact with the upper part of the main part, the webbing can smoothly pass through the webbing passage part and can return to the original state where the webbing is easy.

The slip joint according to a second aspect of the present invention is the slip joint according to the first aspect of the present invention, wherein the slip joint main body and the slip joint main body and the design part are covered with the slip joint main body and the design portion. A concave portion opened on the surface opposite to the other side of the design portion or a convex portion protruding from the surface opposite to the other side is formed.

According to the slip joint according to the second aspect of the present invention, one of the slip joint main body and the design portion protrudes from the recess opened on the surface opposite to the other or the surface opposite to the other. Convex parts are formed. This concave portion or convex portion is covered with the sliding contact portion.

  When a recess is formed in one of the slip joint main body and the design portion, the synthetic resin material of the sliding contact portion that has entered the inside of the recess intersects the penetration direction of the main body side through hole and the design portion side through hole. It faces the inner surface of the recess in the direction. For this reason, it is possible to prevent or effectively suppress relative movement of one of the slip joint main body and the design portion relative to the sliding contact portion in a direction intersecting the penetration direction of the main body side through hole or the design portion side through hole. .

On the other hand, when a convex portion is formed on one of the slip joint main body and the design portion, the synthetic resin material of the slidable contact portion covering the convex portion with respect to the outer peripheral surface of the convex portion is the main body side through hole or It faces the inner surface of the recess in a direction intersecting the penetration direction of the design part side through hole. For this reason, it is possible to prevent or effectively suppress relative movement of one of the slip joint main body and the design portion relative to the sliding contact portion in a direction intersecting the penetration direction of the main body side through hole or the design portion side through hole. .
According to a third aspect of the present invention, there is provided a slip joint manufacturing method according to the present invention, comprising: a slip joint main body having a main body side through-hole formed therein; A design part-side through hole facing the through-hole is formed, a design part through which the webbing passes through a webbing passage part where the main body side through-hole and the design part-side through hole overlap, and a slide on which the webbing slides. And the sliding contact portion includes at least a part of an inner peripheral part of the design part side through hole and at least a part of an inner peripheral part of the main body side through hole of the slip joint main body and the design. A synthetic resin material having a lower coefficient of friction than the design part is molded so as to straddle the direction facing the part and is closely attached to both the slip joint body and the design part It, the design part is fixed to said slip joint body.
According to the slip joint manufacturing method according to the third aspect of the present invention, the sliding contact portion is brought into close contact with the slip joint main body and the design portion by mode molding. Thereby, the design part can be firmly fixed to the slip joint body.

As described above, the slip joint and the slip joint manufacturing method according to the present invention can firmly fix the design portion and the slip joint body.

It is a front view (figure seen from the vehicle width direction indoor side) of the slip joint which concerns on one embodiment of this invention. It is sectional drawing cut along the 2-2 line of FIG. It is a front view (figure seen from the vehicle width direction indoor side) of a slip joint main body. It is a rear view (figure seen from the vehicle width direction outdoor side) of a design part. It is a schematic front view which shows a webbing passage part by the figure which piled up the through-hole of a slip joint main body, and the through-hole of a design part. It is a front view (figure seen from the vehicle width direction room inner side) which shows the modification of the slip joint which concerns on one embodiment of this invention. It is sectional drawing which shows another modification of the slip joint which concerns on one embodiment of this invention.

<Configuration of the present embodiment>
FIG. 1 is a front view of a slip joint 10 according to an embodiment of the present invention (viewed from the vehicle width direction indoor side), and FIG. 2 is cut along line 2-2 in FIG. A cross-sectional view is shown. 3 shows a front view (seen from the vehicle width direction indoor side) of the slip joint main body 12 constituting the slip joint 10, and FIG. 4 shows the design portion 14 constituting the slip joint 10. The rear view (the figure seen from the vehicle width direction outdoor side) is shown.

  As shown in FIGS. 1 and 2, the slip joint 10 includes a slip joint body 12. As shown in FIG. 1 to FIG. 3, the slip joint body 12 is formed by punching a metal flat plate and bending it so as to be bent at an intermediate portion in the vertical direction. As shown in FIG. 3, the slip joint body 12 is formed with a through hole 16 penetrating in the thickness direction of the slip joint body 12.

  A mounting bolt (not shown) passes through the through hole 16. For example, the slip joint body 12 and thus the slip joint 10 are attached to the vehicle body frame member constituting the center pillar of the vehicle, for example, directly or indirectly via a slide mechanism or the like. It is attached so as to be rotatable around an axis having an axial direction).

  A body side through hole 18 is formed in a portion of the slip joint body 12 below the through hole 16. The main body side through hole 18 includes a main body side through hole main portion 20. The main body side through hole main portion 20 is formed in a narrow rectangular shape whose longitudinal direction is along the width direction of the webbing 22 shown in FIG. 2 and whose width direction is along the thickness direction of the webbing 22. A main body side through hole extension portion 24 is formed continuously from the both ends in the longitudinal direction of the main body side through hole main portion 20 to the main body side through hole main portion 20.

  The main body side through-hole extension portion 24 has a lower end connected to the longitudinal end portion of the main body side through-hole main portion 20, and a distal end side extending above the main body-side through-hole main portion 20. For this reason, the main body side through-hole 18 is formed in the concave shape opened toward the vehicle upper direction by front view. Further, a through hole 26 as a recess penetrates the slip joint main body 12 in the thickness direction below the main body side through hole 18.

  On the other hand, as shown in FIGS. 1 and 2, the slip joint 10 includes a design portion 14. As shown in FIGS. 1, 2, and 4, the design portion 14 is a substantially flat plate bent at an intermediate portion in the vertical direction by polypropylene resin (PP resin), acrylonitrile, butadiene, and styrene copolymer synthetic resin (ABS resin). The slip joint body 12 is provided in the vehicle width direction indoor side.

  The outer peripheral shape of the design portion 14 is generally larger than the outer peripheral shape of the slip joint main body 12, and the design portion 14 is provided on the vehicle width direction indoor side of the slip joint main body 12, so that most of the slip joint main body 12 is a vehicle. It is not visible from the indoor side, that is, from the passenger side of the vehicle. However, the outer peripheral portion of the design portion 14 is curved in a concave shape so as to avoid the through hole 16 in the slip joint main body 12 and the vicinity thereof.

  A design part side through hole 32 is formed in the design part 14. The design portion side through hole 32 includes a design portion side through hole main portion 34. The design portion side through-hole main portion 34 is formed in a narrow rectangular shape whose longitudinal direction is along the width direction of the webbing 22 shown in FIG. 2 and whose width direction is along the thickness direction of the webbing 22. The design part side through-hole extension part 36 is formed continuously from the longitudinal direction both ends of the design part side through-hole main part 34 to the design part side through-hole main part 34. The design portion side through-hole extension portion 36 has a lower end portion connected to a longitudinal direction end portion of the design portion side through-hole main portion 34, and a distal end side extending above the design portion-side through hole main portion 34. For this reason, the design part side through-hole 32 is formed in the concave shape opened toward the vehicle upper direction by the front view.

  As shown in FIG. 1 and more specifically in FIG. 5, the design part side through hole 32 is formed in the design part 14 so that the main body side through hole 18 is located outside the vehicle width direction outdoor side along the penetration direction. The However, in the present embodiment, the shape of the main body side through hole 18 and the design part side through hole 32 are different, so that the inner peripheral part of the main body side through hole 18 is inside the part of the inner peripheral part of the design part side through hole 32. Or a part of the inner periphery of the design part side through-hole 32 is located inside a part of the inner periphery of the main body side through hole 18. In this way, the portion where the main body side through hole 18 and the design portion side through hole 32 overlap along the penetration direction of the main body side through hole 18 and the design portion side through hole 32 (the hatched portion in FIG. 5) passes through the webbing. The webbing 22 described above passes through the webbing passage 42 in the main body side through hole 18 and the design part side through hole 32. The webbing passage portion 42 includes a passage portion main portion 44 as a main portion.

  The passage main portion 44 is formed in a narrow rectangular shape whose longitudinal direction is along the width direction of the webbing 22 passing through the webbing passage portion 42 and whose width direction is along the thickness direction of the webbing 22 passing through the webbing passage portion 42. The The longitudinal dimension of the passage main part 44 is longer than the width dimension of the webbing 22, so that the webbing 22 can move in the longitudinal direction of the passage main part 44 within the passage main part 44. From both ends in the longitudinal direction of the passage main portion 44, a passage extension 46 as an extension is formed continuously from the passage main portion 44.

  The lower end of the passage extension 46 is connected to the longitudinal end of the passage main portion 44, and the tip end extends above the vehicle relative to the passage main portion 44. For this reason, the webbing passage part 42 is formed in a concave shape that opens upward in the vehicle in a front view. Further, on the lower side of the webbing passage portion 42, a through hole 52 as a recess penetrates the design portion 14 in the thickness direction. The through hole 52 is opposed to the through hole 26 formed in the slip joint body 12 in the penetrating direction thereof.

  Further, a support portion 54 is formed below the through hole 52 on the surface of the design portion 14 facing the slip joint body 12. The support portion 54 extends outward from the design portion 14 in the vehicle width direction, and the front end side in the extending direction is bent upward in a hook shape. The distance between the design portion 14 and the tip of the support portion 54 bent in a bowl shape is set to be the same as the thickness dimension of the slip joint body 12 or slightly larger than the thickness dimension of the slip joint body 12. The slip joint body between the design part 14 and the tip part of the support part 54 in a state where the lower end part 56 of the joint body 12 is brought into contact with the intermediate part in the extending direction of the support part 54 and the slip joint body 12 is supported from the lower side. 12 can be sandwiched.

  Further, a support portion 60 is formed above the design portion side through hole 32 on the surface of the design portion 14 facing the slip joint body 12. The support portion 60 extends from the design portion 14 to the outside in the vehicle width direction, and the front end side in the extending direction is bent upward in a bowl shape. In the support portion 60, the distance between the bent tip portion and the design portion 14 is set to be the same as the thickness dimension of the slip joint body 12 or slightly larger than the thickness dimension of the slip joint body 12.

  The support portion 60 penetrates the body side through hole 18 of the slip joint body 12. In the state where the support portion 54 is in contact with the lower end portion 56 of the slip joint main body 12 from below, the intermediate portion in the extending direction of the main body side through hole 18 is the main body side through hole main portion 20 of the main body side through hole 18. In this state, the slip joint body 12 can be sandwiched between the design portion 14 and the tip portion of the support portion 60 that is in contact with the inner peripheral upper portion 62 from below and bent in a bowl shape in this state.

  A pair of engaging claws 66 are formed on the upper end side of the surface of the design portion 14 facing the slip joint body 12. In a state where the slip joint body 12 is supported by the support portions 54 and 60 described above, the engagement claw 66 engages with the slip joint body 12 from above. The engagement portion of the engagement claw 66 in the slip joint body 12 is inclined up and down with respect to the longitudinal direction of the main body side through hole main portion 20 in the main body side through hole 18, and the engagement claw 66 is engaged with this portion. The support portions 54 and 60 support the slip joint main body 12 so that relative displacement along the vertical direction of the slip joint main body 12 and the longitudinal direction of the main body side through-hole main portion 20 with respect to the design portion 14 is regulated. It has become.

  However, the holding of the slip joint main body 12 by the support portions 54 and 60 and the engaging claw 66 is such that the slip joint main body 12 can be prevented from shifting with respect to the design portion 14 when the sliding contact portion 72 described later is formed. The rigidity of the support portions 54 and 60 and the engaging claw 66 is set to be lower than that of the configuration in which the slip joint body 12 is fixed to the design portion 14 with only such support portions and claw.

  On the other hand, as shown in FIGS. 1 and 2, a sliding contact portion 72 is formed in the slip joint 10. The sliding contact portion 72 extends along the longitudinal direction of the inner peripheral lower side portion 74 of the passage main portion 44 and the vertical direction of the inner peripheral outer portion 76 of the passage main portion 44 of the passage extension portion 46. It is given to the whole area. The slidable contact portion 72 has the slip joint main body 12 and the design portion in a mold for forming the slidable contact portion 72 in a state where the support portions 54 and 60 and the engaging claws 66 hold the slip joint main body 12. 14 is disposed and the sliding contact portion 72 is filled with a synthetic resin material having a lower friction coefficient than the synthetic resin material forming the design portion 14 such as polyacetal resin (POM resin).

  As shown in FIG. 2, the slidable contact portion 72 covers the inner peripheral lower side portion 74 in the passage portion main portion 44 of the webbing passage portion 42 and the inner periphery outer portion 76 in the passage portion extension portion 46. 12 near the webbing passage part 42 on the surface opposite to the design part 14 and the vicinity part of the webbing passage part 42 on the surface opposite to the slip joint body 12 of the design part 14. Further, the synthetic resin material constituting the sliding contact portion 72 also enters the through holes 26 and 52. The webbing 22 that passes through the slidable contact portion 72 is in sliding contact with the surface of the slidable contact portion 72, of the both surfaces in the thickness direction.

<Operation and effect of the present embodiment>
Next, the operation and effect of the slip joint 10 will be described.

  In the slip joint 10, the slidable contact portion 72 with which the webbing 22 is slidably covered covers the inner peripheral lower side portion 74 in the passage portion main portion 44 of the webbing passage portion 42 and the inner periphery outer side portion 76 in the passage portion extension portion 46. The slip joint body 12 is in close contact with the portion near the webbing passage portion 42 on the surface opposite to the design portion 14 and the portion near the webbing passage portion 42 on the surface opposite to the slip joint body 12 of the design portion 14. doing. For this reason, the slip joint main body 12 and the design part 14 are firmly fixed by the sliding contact part 72, and it can prevent or effectively suppress that the slip joint main body 12 and the design part 14 are separated from each other.

  Further, the synthetic resin material constituting the sliding contact portion 72 enters the through hole 26 of the slip joint body 12 and the through hole 52 of the design portion 14. For this reason, the inner peripheral surfaces of the through holes 26 and 52 and the synthetic resin material constituting the sliding contact portion 72 face each other in a direction orthogonal to the through direction of the through holes 26 and 52. When the slip joint main body 12 or the design portion 14 tries to move relative to the sliding contact portion 72 in a direction orthogonal to the penetrating direction of the sliding contact portion 72, the cured synthetic resin material constituting the sliding contact portion 72 is transparent. Such movement is restricted by interfering with the inner peripheral surfaces of the holes 26 and the through holes 52.

  For this reason, the inadvertent movement of the slip joint main body 12 and the design part 14 with respect to the sliding contact part 72 can be prevented or effectively suppressed, whereby the slip joint main body 12 and the design part 14 can be separated from each other. The relative displacement of the design portion 14 with respect to the slip joint body 12 can be effectively prevented or effectively suppressed.

  In addition, the webbing 22 that passes through the webbing passage portion 42 is normally in sliding contact with a portion of the sliding contact portion 72 that is provided on the sliding contact portion 72 of the passage main portion 44. Here, the webbing 22 moves to one end in the longitudinal direction of the passage main part 44 and comes into contact with one end in the longitudinal direction of the passage main part 44. In this state, the webbing 22 further moves in the longitudinal direction of the passage main part 44. When it moves to one end side, the webbing 22 bends or curves along the inner peripheral outer side portion 76 of the passage extension portion 46 of the webbing passage portion 42. Here, in the present slip joint 10, a sliding contact portion 72 is provided in the entire vertical direction of the inner peripheral outer side portion 76 of the passage portion extension portion 46. For this reason, even if the webbing 22 is curved, the webbing 22 can smoothly pass through the webbing passage part 42 and can easily move to the other end in the longitudinal direction of the passage part main part 44 to return to the original state. .

  Furthermore, in the present slip joint 10, the slip joint body 12 and the design portion 14 are fixed by the sliding contact portion 72. For this reason, as described above, the holding of the slip joint main body 12 by the support portions 54 and 60 and the engaging claw 66 prevents the slip joint main body 12 from being displaced with respect to the design portion 14 when the sliding contact portion 72 is formed. Hold as much as possible. Therefore, the rigidity of the support portions 54 and 60 and the engaging claws 66 can be set low, and the slip joint main body 12 can be easily attached to and supported by the support portions 54 and 60 and the engaging claws 66 (that is, the support portions). The workability when attaching the slip joint body 12 to 54, 60 and the engaging claw 66 is good).

  Further, in the configuration in which a sliding contact member that is in sliding contact with the webbing 22 is separately formed and assembled to the slip joint main body 12 or the design portion 14 instead of the sliding contact portion 72, the inner peripheral outer side portion 76 of the passage extension portion 46 in the sliding contact member. Can be set only lower than the vertical dimension of the lapping allowance (overlapping range) between the sliding contact member and the slip joint body 12 and the design portion 14 along the penetrating direction of the sliding contact portion 72. The sliding contact portion 72 cannot reach the upper end of the inner peripheral outer side portion 76 of the passage extension portion 46. On the other hand, in this embodiment, the sliding contact portion 72 can reach the upper end of the inner peripheral outer side portion 76 of the passage portion extension portion 46 by forming the sliding contact portion 72 by molding.

  Furthermore, in the present embodiment, the webbing passage portion 42 has an inner peripheral upper portion (that is, an upper portion of the passage portion main portion 44 or a portion on the inner side in the longitudinal direction of the passage portion main portion 44 in the passage portion extension portions 46). The sliding contact portion 72 is not formed. For this reason, the usage-amount of the synthetic resin material for forming the sliding contact part 72 can be decreased, As a result, cost can be made cheap. And the dimension along the longitudinal direction of the passage main part 44 in the sliding contact part 72 given to the passage extension part 46 becomes short. Thereby, the shrinkage | contraction at the time of shaping | molding becomes small in the part given to the passage extension part 46 among the synthetic resin materials which form the sliding contact part 72, and generation | occurrence | production of the shrinkage crack of the sliding contact part 72, etc. can be prevented or suppressed.

  In the present embodiment, the sliding contact portion 72 is formed in the longitudinal direction of the inner peripheral lower side portion 74 in the passage main portion 44 of the webbing passage portion 42 and in the vertical direction in the inner peripheral outer portion 76 of the passage extension portion 46. Formed throughout. However, the formation range of the sliding contact portion 72 is not limited to this range. For example, as shown in FIG. 5, the sliding contact portion 72 may be formed over the entire inner peripheral portion of the webbing passage portion 42, and by adopting such a configuration, the slip joint body 12 and the design portion 14 can be connected. Further, it can be firmly fixed.

However, the synthetic resin material may shrink when cured, and such shrinkage becomes significant in the longitudinal direction, that is, the longitudinal direction of the passage main portion 44 in the present embodiment. Here, in this embodiment, the upper end portion of the inner peripheral outer portion 76 of the upper and the other side of the passage portion extension 46 sliding contact portion 72 at the inner circumferential outer portion 76 of the one passage section extension 46 Not connected. For this reason, even when the above shrinkage occurs, it is possible to prevent or effectively reduce the occurrence of a crack or the like in the sliding contact portion 72.

  Moreover, in this Embodiment, although the recessed part into which the synthetic resin material which comprises the sliding contact part 72 penetrated was made the through-hole 26 or the through-hole 52 which penetrated, for example, as shown in (A) of FIG. It is good also considering the bottomed hole part 92 opened on the surface on the opposite side to the design part 14 of the slip joint main body 12 as a recessed part. Further, instead of such a concave portion, a convex portion 94 protruding from the surface opposite to the slip joint main body 12 of the design portion 14 as shown in FIG. 7A is formed, and the convex portion 94 is covered. The sliding contact portion 72 may be provided as described above.

  In such a configuration, the synthetic resin material constituting the hardened sliding contact portion 72 faces the outer peripheral portion of the convex portion 94. For this reason, when the slip joint main body 12 and the design part 14 try to move with respect to the sliding contact part 72 in a direction orthogonal to the protruding direction of the convex part 94, the cured synthetic resin material constituting the sliding contact part 72. Interferes with the outer peripheral surface of the convex portion 94 to restrict such movement. Therefore, the same effect as the configuration in which the through holes 26 and 52 and the hole 92 are formed in the slip joint main body 12 and the design part 14 can be obtained.

  Further, as shown in FIG. 7B, the sliding contact portion 72 is further outside the edge of the webbing passage portion 42 on the outer side in the opening radial direction (below the sliding contact portion 72 in FIG. 7B). The synthetic resin material that forms the stepped portion 102 on the side opposite to the slip joint body 12 of the design portion 14 (the left side of FIG. 7B) and forms the sliding contact portion 72 is formed on the stepped portion. It is good also as a structure which prevents or suppresses extending inadvertently outside 102.

  Further, as shown in FIG. 7C, the convex portion 104 is formed on the inner side in the opening radial direction of the webbing passage portion 42 than the step portion 102 (in FIG. 7C, above the step portion 102). May be. In such a configuration, the convex portion 104 has the same function as the step portion 102 shown in FIG. 7A, and the same effect as the configuration in which the step portion 102 is formed can be obtained.

DESCRIPTION OF SYMBOLS 10 Slip joint 12 Slip joint main body 14 Design part 18 Main body side through-hole 22 Webbing 26 Through-hole (recessed part)
32 Design part side through-hole 42 Webbing passage part 44 Passing part main part (main part)
46 Passing part extension (extension part)
52 Through-hole (concave)
72 Sliding part 92 Hole (recessed part)
94 Convex 104 Convex

Claims (3)

A slip joint body in which a body side through hole is formed,
A main portion that is provided on the vehicle interior side of the slip joint main body , the longitudinal direction is along the width direction of the webbing, the width direction is along the thickness direction of the webbing, and the webbing passes through the inside, and the longitudinal direction of the main portion A design having an extension formed so as to continuously extend from the main part so as to bend or curve from the end part to one side in the width direction of the main part, and facing the main body side through-hole in the penetration direction part-side through hole is formed, and the design portion of the webbing passing portion and the body-side through holes and the design section through-hole overlaps said webbing passes,
The synthetic resin material having a lower coefficient of friction than the design part is formed in the entire area on the inner peripheral side of the webbing passage part , and the webbing is in sliding contact with the surface and at least a part of the inner peripheral part of the design part side through hole and The design portion is provided so as to straddle at least a part of the inner peripheral portion of the body-side through hole in a facing direction of the slip joint body and the design portion, and is in close contact with both the slip joint body and the design portion. A sliding contact portion fixed to the slip joint body;
Slip joint with. In a portion covered with the sliding contact portion in one of the slip joint body and the design portion, a recess opened on a surface opposite to the other of the slip joint body and the design portion or on the side opposite to the other slip joint according to claim 1 formed with the convex portion protruding from the surface.   A slip joint main body having a main body side through hole formed therethrough, and a design part side through hole that is provided on the vehicle interior side of the slip joint main body and that faces the main body side through hole in the penetrating direction is formed. A design part through which the webbing passes through a webbing passage part in which the through hole and the design part side through hole overlap each other; and a sliding contact part with which the webbing slides on the surface, the sliding contact part being the design part The coefficient of friction is greater than that of the design part so as to straddle at least part of the inner peripheral part of the side through hole and at least part of the inner peripheral part of the main body side through hole in the facing direction of the slip joint body and the design part. A low synthetic resin material is molded and adhered to both the slip joint body and the design part, whereby the design part is fixed to the slip joint body. Method of manufacturing-up joint.