Fixed structure

Abstract

To provide a fixing structure capable of preventing a stud bolt from entering obliquely to appropriately attach an attachment member to a member to be attached, when attaching the attachment member to the member to be attached having the stud bolt.SOLUTION: A fixing structure 10 comprises: a body part 11 into which a stud bolt 50 is inserted from one side to the other side along an axial direction; a pair of first locking piece parts 14c, 14d that are locked in a bolt groove part 51 of the stud bolt 50 inserted into the body part 11; and a pair of second locking pieces 14c, 14d that are located on the other side in the axial direction with respect to the first locking pieces 14a, 14b and are locked in the bolt groove part 51 of the stud bolt 50 inserted into the body part 11. The second locking pieces 14c, 14d include a deflection amount regulation part that is brought into contact with the wing parts 141 of the first locking piece parts 14a, 14b to regulate a deflection amount of the wing parts 141.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a fixing structure. [Background technology]

[0002] As a technique for attaching a mounting component such as a wire harness, pipe, or heat insulating material to a mounting target component such as an automobile body, for example, Patent Document 1 discloses a fastener having a base portion formed with a stud receiving hole for receiving a threaded or circumferentially grooved stud, and a stud locking portion for locking onto the threads of the stud, and having a protrusion that restricts the stud locking portion from moving toward the base of the stud when a force is applied to pull the mounting component and the mounting target component apart.

[0003] Furthermore, Patent Document 2 discloses a retainer that holds a stud by engaging with the threads or peripheral groove of the stud, and that has a pair of side walls that form a stud receiving space for receiving the stud, and a stud locking piece, with the flexible piece that makes up the stud locking piece having a specific shape.

[0004] Furthermore, Patent Document 3 discloses a fastener that engages with and fixes a stud bolt, the fastener having a locking piece that engages with the stud bolt and a spring piece that biases the locking piece so that the claw portion of the locking piece engages with the stud bolt. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 11-173320 [Patent Document 2] Japanese Patent Application Laid-Open No. 2009-185902 [Patent Document 3] Japanese Patent Application Publication No. 9-32833 Summary of the Invention [Problem to be solved by the invention]

[0006] When attaching the above-described fastening device to the stud bolt, the stud bolt may be inserted at an angle, preventing proper fastening.

[0007] The present invention has been made in consideration of the above circumstances, and aims to provide a fixing structure that prevents the stud bolt from being inserted at an angle when attaching a mounting member to a mounting workpiece having a stud bolt, thereby enabling the mounting member to be properly attached to the mounting workpiece.

[0008] In order to achieve the above object, a fixing structure according to the present invention comprises a main body portion which is provided on a mounting member and through which a stud bolt fixed to a mounted member is inserted from one side to the other along an axial direction, a pair of first locking pieces which are provided on the main body portion opposite each other in a width direction intersecting with the axial direction and which engage with bolt grooves of the stud bolt inserted through the main body portion, and a pair of second locking pieces which are provided on the main body portion opposite each other in the width direction and are located on the other side of the first locking pieces in the axial direction and which engage with the bolt grooves of the stud bolt inserted through the main body portion, the bolt receiving space surrounded by the pair of end wall portions and the pair of side wall portions and receiving the stud bolt inserted through the bolt insertion hole, the first locking piece portion including an elastically deformable wing portion that protrudes from the side wall portion toward the bolt receiving space portion and extends toward the other side in the axial direction, and a claw portion that protrudes from the wing portion and is engaged with the bolt groove, and the second locking piece portion includes a deflection amount restricting portion that abuts against the wing portion of the first locking piece portion to restrict the amount of deflection of the wing portion. [Effects of the Invention]

[0009] The fixing structure according to the present invention has the effect of preventing the stud bolt from being inserted at an angle when attaching a mounting member to a mounting workpiece having a stud bolt, thereby enabling the mounting member to be properly attached to the mounting workpiece. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view showing a schematic configuration of a fixing structure according to an embodiment. [Figure 2] FIG. 2 is a perspective view showing a schematic configuration of the fixing structure according to the embodiment (when the stud bolt is inserted). [Figure 3] FIG. 3 is a side view showing a schematic configuration of the fixing structure according to the embodiment. [Figure 4] FIG. 4 is a side view showing a schematic configuration of the fixing structure according to the embodiment (when the stud bolt is inserted). [Figure 5] FIG. 5 is a cross-sectional view of the fixing structure according to the embodiment. [Figure 6] FIG. 6 is a perspective view showing a schematic configuration of a fixing structure according to a modified example of the embodiment. [Figure 7] FIG. 7 is a side view showing a schematic configuration of a fixing structure according to a modified example of the embodiment. [Figure 8] FIG. 8 is a cross-sectional view of a fixing structure according to a modified example of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to these embodiments. Furthermore, the components in the following embodiments include those that are easily replaceable by those skilled in the art, or those that are substantially the same.

[0012] In the following description, of the first, second, and third directions that intersect with one another, the first direction will be referred to as the "axial direction X," the second direction will be referred to as the "width direction Y," and the third direction will be referred to as the "depth direction Z." Here, the axial direction X, width direction Y, and depth direction Z are approximately perpendicular to one another. The axial direction X typically corresponds to the direction in which a stud bolt is inserted into the main body of the fixing structure, and corresponds to the direction in which a pair of end wall portions face each other. The width direction Y typically corresponds to the direction in which a pair of side wall portions face each other, and corresponds to the corresponding direction in which a pair of locking pieces face each other. Unless otherwise specified, the directions used in the following description will be described as the directions in which the respective portions are assembled together.

[0013] [Embodiment] One embodiment of a fixing structure according to the present invention will be described with reference to Figures 1 to 5. In Figures 2 and 4, the attached member is not shown, and only the stud bolt is shown.

[0014] As shown in FIGS. 1 and 2 , a fixing structure 10 according to this embodiment is provided on a mounting member 1 and engages a stud bolt 50 fixed to a mounting member (not shown). The stud bolt 50 has a spiral or annular bolt groove 51 formed in its shaft. The mounting member 1 is used to fasten a cable or the like to a mounting member such as a vehicle body panel. The mounting member 1 is formed by integrally molding a holding member 20 that holds the cable or the like and the fixing structure 10 from an insulating resin material. The holding member 20 sheathes the cable or the like to protect it and also constitutes a protector that regulates the routing path of the cable or the like. The holding member 20 has a semi-cylindrical first holding portion 21 and a second holding portion 22, and the first holding portion 21 and the second holding portion 22 are connected by a connecting portion 25. The second holding portion 22 is bent at the connecting portion 25 to form a cylindrical holding portion together with the first holding member. Holding member 20 is fixed in a state in which first holding portion 21 and second holding portion 22 constitute a holding portion by inserting and locking engagement portion 23 into insertion opening 24. Note that the configuration of holding member 20 is merely an example, and holding members having other configurations may also be used.

[0015] The fixing structure 10 comprises a main body 11 through which a stud bolt 50 fixed to a workpiece is inserted from one side to the other along the axial direction X, a pair of upper locking pieces 14a, 14b provided on the main body 11 opposite each other along a width direction Y intersecting the axial direction X and locked into bolt grooves 51 of the stud bolt 50 inserted into the main body 11, and a pair of lower locking pieces 14c, 14d located on the other side of the upper locking pieces 14a, 14b in the axial direction X. In the fixing structure 10 of this embodiment, the pair of upper locking pieces 14a, 14b correspond to a pair of first locking pieces, and the pair of lower locking pieces 14c, 14d correspond to a pair of second locking pieces. In this embodiment, the pair of lower locking pieces 14c, 14d are provided on the main body 11 opposite each other in the width direction Y and include a pair of deflection control portions 15a, 15b that can come into contact with the upper locking pieces 14a, 14b, respectively. In the fixing structure 10, the stud bolt 50 is inserted from one side, i.e., from the bolt insertion hole 12, and toward the other side, i.e., the bolt insertion hole 13, with the tip of the stud bolt 50 penetrating through the bolt insertion hole 13 and protruding therefrom.

[0016] The main body 11 has a pair of end walls 11a, 11d positioned opposite each other along the axial direction X and having bolt insertion holes 12, 13 formed therein, through which a stud bolt 50 is inserted, a pair of side walls 11b, 11c positioned opposite each other along the width direction Y and extending between the pair of end walls 11a, 11d along the axial direction X, and a pair of support posts 16a, 16b positioned opposite each other along the depth direction Z and extending between the pair of end walls 11a, 11d along the axial direction X. The space enclosed by the pair of end walls 11a, 11d and the pair of side walls 11b, 11c constitutes a bolt-receiving space 11e that receives the stud bolt 50 inserted through the bolt insertion hole 12.

[0017] A bolt insertion hole 12 for inserting a stud bolt 50 is formed in the end wall portion 11a, and the end wall portion 11d in which the bolt insertion hole 13 is formed and the end wall portion 11a are arranged opposite each other along the axial direction X, i.e., the insertion direction of the stud bolt 50.

[0018] The side wall portion 11b is provided extending between the end wall portions 11a and 11d, and on the wall surface of the side wall portion 11b facing the bolt receiving space portion 11e, an upper locking piece portion 14b and a lower locking piece portion 14d are arranged side by side from the end wall portion 11a side to the end wall portion 11d side.

[0019] The side wall portion 11c is provided extending between the end wall portions 11a and 11d, and on the wall surface of the side wall portion 11c on the side of the bolt receiving space portion 11e, an upper locking piece portion 14a and a lower locking piece portion 14c are arranged side by side from the end wall portion 11a side to the end wall portion 11d side.

[0020] The pillars 16a, 16b are provided extending between the end wall portions 11a, 11d. The pillars 16a, 16b are formed so that their width gradually increases from one side (the bolt insertion hole 12 side) in the axial direction X to the other side (the bolt insertion hole 13 side), and connect the bolt insertion holes 12 and 13. This prevents the fixing structure 10 from inserting the stud bolt 50 obliquely toward the pillars 16a, 16b.

[0021] The upper locking pieces 14a, 14b are formed to protrude from the side wall portions 11b, 11c toward the bolt-receiving space portion 11e and extend toward the other side in the axial direction X. The upper locking pieces 14a, 14b include an elastically deformable wing portion 141 and a claw portion 142 that protrudes from the wing portion 141 and is locked into the bolt groove portion 51. The width of the upper locking pieces 14a, 14b in the depth direction Z is slightly larger than the diameter of the stud bolt 50, for example, about 5 mm.

[0022] The lower locking pieces 14c, 14d are formed to protrude from the side wall portions 11b, 11c toward the bolt-receiving space 11e and extend toward the other side in the axial direction X. The second locking pieces 14c, 14d include an elastically deformable wing portion 141 and a claw portion 142 that protrudes from the wing portion 141 and is engaged with the bolt groove portion 51. The wing portion 141 of the lower locking pieces 14c, 14d has an end portion on the other side in the axial direction X that is fixed adjacent to the bolt insertion hole 13 in the end surface wall portion 11d located on the other side in the axial direction X. The width of the lower locking pieces 14c, 14d in the depth direction Z is formed to be slightly larger than the diameter of the stud bolt 50, for example, approximately 5 mm, similar to the upper locking pieces 14a, 14b.

[0023] Deflection amount restricting portions 15a, 15b are provided on lower locking pieces 14c, 14d and come into contact with wing portions 141 of upper locking pieces 14a, 14b to restrict the amount of deflection of wing portions 141. Deflection amount restricting portions 15a, 15b are formed as protrusions that protrude from wing portion 141 toward wing portion 141 of upper locking pieces 14a, 14b along axial direction X. Deflection amount restricting portions 15a, 15b are provided as protrusions at positions where the other tip ends of wing portions 141 in axial direction X come into contact when wing portions 141 of upper locking pieces 14a, 14b deflect toward side wall portions 11b, 11c as stud bolt 50 is inserted into bolt insertion hole 12 (see dotted lines in FIG. 5 ).

[0024] The upper locking pieces 14a, 14b flex when the stud bolt 50 is inserted, thereby reducing the force (insertion force) required to insert the stud bolt 50. If the thickness of the upper locking pieces 14a, 14b is reduced, the insertion force of the stud bolt 50 can be reduced, but if the stud bolt 50 is inserted deviating from the axial direction X, the elastic force of the upper locking pieces 14a, 14b will not be able to return the insertion direction of the stud bolt 50 to the axial direction X, and the tip of the stud bolt 50 will not be able to pass through the bolt insertion hole 13. In this embodiment, deflection restricting portions 15a, 15b are protrusions that protrude from wing portion 141 toward wing portion 141 of upper locking pieces 14a, 14b along axial direction X and abut against wing portion 141 of upper locking pieces 14a, 14b, thereby restricting the amount of deflection of upper locking pieces 14a, 14b. As a result, even if stud bolt 50 is inserted deviating from axial direction X, the elastic force of upper locking pieces 14a, 14b is reduced, suppressing the insertion force of stud bolt 50, while restricting the insertion direction of stud bolt 50 to a direction that allows the tip of stud bolt 50 to pass through bolt insertion hole 13. As a result, when attaching mounting member 1 to a workpiece having stud bolt 50, fixing structure 10 prevents stud bolt 50 from being inserted at an angle, allowing mounting member 1 to be properly attached to the workpiece.

[0025] Like the upper locking pieces 14a, 14b, the lower locking pieces 14c, 14d flex when the stud bolt 50 is inserted, thereby reducing the insertion force of the stud bolt 50. The thickness of the lower locking pieces 14c, 14d is adjusted to adjust the insertion force of the stud bolt 50, but to prevent the stud bolt 50 from being inserted at an angle, the ends of the wing portions 141 of the lower locking pieces 14c, 14d on the other side in the axial direction X are fixed adjacent to the bolt insertion hole 13 of the end face wall portion 11d located on the other side in the axial direction X. By fixing the ends of the wing portions 141 of the lower locking pieces 14c, 14d adjacent to the bolt insertion hole 13, it is possible to guide the insertion of the tip of the stud bolt 50 into the bolt insertion hole 13 while reducing the insertion force of the stud bolt 50. From the viewpoint of ease of insertion of the stud bolt 50 into the bolt insertion hole 13, it is preferable that the wing portions 141 of the lower locking pieces 14c, 14d are fixed to the bolt insertion hole 13 without any steps (flush).

[0026] In this embodiment, the stud bolt 50 is secured by the upper locking pieces 14a, 14b and the lower locking pieces 14c, 14d, but to improve the securing strength, the fixing structure 10 may be provided with additional locking pieces, for example, a pair of third locking pieces between the upper locking pieces 14a, 14b and the lower locking pieces 14c, 14d.

[0027] Furthermore, in this embodiment, the ends of the wing portions 141 of the lower locking pieces 14c, 14d are fixed adjacent to the bolt insertion hole 13, but this does not necessarily have to be the case. By restricting the amount of deflection of the upper locking pieces 14a, 14b located on one side in the axial direction X with the deflection amount restricting portions 15a, 15b, the insertion direction of the stud bolt 50 can be effectively restricted to a direction that allows it to pass through the bolt insertion hole 13, even when the stud bolt 50 is inserted at an angle.

[0028] In the above embodiment, the deflection amount restricting portions 15a, 15b are provided on the lower locking pieces 14c, 14d, but this is not limiting. For example, the deflection amount restricting portions may be configured by positioning the wing portions 141 of the lower locking pieces 14c, 14d so that one end portion in the axial direction X can come into contact with the wing portions 141 of the upper locking pieces 14a, 14b.

[0029] A fixing structure 10A according to a modified example of the present embodiment will be described with reference to Figures 6 to 8. Note that, in the fixing structure 10A according to the modified example, the same components as those of the fixing structure 10 of the embodiment will be denoted by the same reference numerals, and description thereof will be omitted.

[0030] The fixing structure 10A includes a main body 11, a pair of upper locking pieces 14a, 14b that are arranged opposite the main body 11 along a width direction that intersects with the axial direction X and that are engaged with bolt grooves 51 of a stud bolt 50 that is inserted into the main body 11, and a pair of lower locking pieces 14c', 14d' that are located on the other side of the upper locking pieces 14a, 14b in the axial direction X.

[0031] Lower locking pieces 14c', 14d' include elastically deformable wing portions 141' and claw portions 142 formed to protrude from wing portion 141' and to be locked into bolt groove portions 51. Wing portions 141' of lower locking pieces 14c', 14d' are formed at positions where one end portion in the axial direction X can abut against wing portions 141 of upper locking pieces 14a, 14b, in other words, wing portions 141' of lower locking pieces 14c', 14d' are formed to be located on one side of side wall portions 11b, 11c in the axial direction X of wing portions 141 of lower locking pieces 14c, 14d in the embodiment. In this modified example, the wing portion 141' of the lower locking piece 14c' constitutes the deflection amount restricting portion 15a', and the wing portion 141' of the lower locking piece 14d' constitutes the deflection amount restricting portion 15b'. The deflection amount restricting portions 15a', 15b' are provided at positions on the side wall portions 11b, 11c where the tip ends of the wing portions 141 on the other side in the axial direction X come into contact when the wing portions 141 of the upper locking pieces 14a, 14b bend toward the side wall portions 11b, 11c as the stud bolt 50 is inserted into the bolt insertion hole 12 (see dotted lines in FIG. 8).

[0032] In this modified example, the wing portions 141' of the lower locking pieces 14c', 14d' are positioned so that their ends on one side in the axial direction X can come into contact with the wing portions 141 of the upper locking pieces 14a, 14b, and by making them come into contact with the wing portions 141 of the upper locking pieces 14a, 14b, the amount of deflection of the upper locking pieces 14a, 14b can be restricted. As a result, even if the stud bolt 50 is inserted deviating from the axial direction X, the elastic force of the upper locking pieces 14a, 14b is reduced, suppressing the insertion force of the stud bolt 50, and the insertion direction of the stud bolt 50 can be restricted to a direction that allows the tip of the stud bolt 50 to pass through the bolt insertion hole 13.

[0033] Furthermore, the wing portions 141' of the lower locking pieces 14c', 14d' have their ends on the other side in the axial direction X fixed adjacent to the bolt insertion holes 13 of the end face wall portion 11d located on the other side in the axial direction X, as in the embodiment, but they do not necessarily have to be fixed. [Explanation of symbols]

[0034] 1 Mounting material 10 Fixed structure 11 Main body 11a, 11d End wall 11b, 11c Side wall 11e Bolt receiving space 12, 13 Bolt insertion holes 14a, 14b Upper locking piece (first locking piece) 14c, 14d, 14c', 14d' Lower locking piece (second locking piece) 15a, 15b Deflection control section 16a, 16b struts 20 Retaining member 21 1st holding part 22 Second holding part 23 Engagement part 24 Insertion port 25 Connection

Claims

1. a main body portion provided on the mounting member, through which a stud bolt fixed to the mounted member is inserted from one side to the other along the axial direction; a pair of first locking pieces provided on the main body portion opposite each other along a width direction intersecting with the axial direction, the first locking pieces being locked into bolt grooves of the stud bolt inserted into the main body portion; a pair of second locking pieces provided on the main body portion opposite each other along the width direction, located on the other side of the first locking piece in the axial direction, and locked to the bolt groove of the stud bolt inserted through the main body portion, The main body portion is a pair of end surface wall portions positioned opposite each other along the axial direction and each having a bolt insertion hole through which the stud bolt is inserted; a pair of side wall portions positioned opposite each other along the width direction and extending between the pair of end wall portions along the axial direction; a bolt receiving space portion that is surrounded by the pair of end surface wall portions and the pair of side surface wall portions and that receives the stud bolt inserted through the bolt insertion hole, The first locking piece is a wing portion that protrudes from the side wall portion toward the bolt-receiving space portion and extends toward the other side in the axial direction, and is elastically deformable; a claw portion formed to protrude from the wing portion and engaged with the bolt groove portion, the second locking piece includes a deflection amount restricting portion that abuts against the wing portion of the first locking piece to restrict the amount of deflection of the wing portion, Fixed structure.

2. The second locking piece is a wing portion that protrudes from the side wall portion toward the bolt-receiving space portion and extends toward the other side in the axial direction, and is elastically deformable; a claw portion formed to protrude from the wing portion and engaged with the bolt groove; the deflection amount restricting portion is formed as a protruding portion protruding from the wing portion toward the first locking piece portion along the axial direction, The fixing structure according to claim 1 .

3. The second locking piece is a wing portion that protrudes from the side wall portion toward the bolt-receiving space portion and extends toward the other side in the axial direction, and is elastically deformable; a claw portion formed to protrude from the wing portion and engaged with the bolt groove portion, the wing portion of the second locking piece portion is positioned so that the end portion on the one side in the axial direction can come into contact with the wing portion of the first locking piece portion, thereby constituting the deflection amount restricting portion. The fixing structure according to claim 1 .

4. The second locking piece is a wing portion that protrudes from the side wall portion toward the bolt-receiving space portion and extends toward the other side in the axial direction, and is elastically deformable; a claw portion formed to protrude from the wing portion and engaged with the bolt groove portion, the wing portion of the second locking piece portion has an end portion on the other side in the axial direction that is fixed adjacent to the bolt insertion hole of the end surface wall portion located on the other side in the axial direction, The fixing structure according to any one of claims 1 to 3.

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