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, and 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. The first locking piece parts 14c, 14d include a wing part 141 that is elastically deformable, and a claw part 142 locked to the bolt groove part 51. The wing part 141 has an end part on the other side in the axial direction fixed adjacent to a bolt insertion hole 13 of an end surface wall part located on the other side in the axial direction.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 provided on a mounting member, through which a stud bolt fixed to a mounted member is inserted from one side to the other along an axial direction, and a pair of first locking pieces provided on the main body portion opposite each other along a width direction intersecting the axial direction and locked into bolt grooves of the stud bolt inserted into the main body portion, the main body portion having 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, and a pair of end surface wall portions positioned opposite each other along the width direction and each having a bolt insertion hole through which the stud bolt is inserted, the pair of end surface wall portions being positioned opposite each other along the axial direction. and a bolt receiving space surrounded by the pair of end face walls and the pair of side wall portions for 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 locked to the bolt groove, and the other end of the wing portion in the axial direction is fixed adjacent to the bolt insertion hole of the end face wall portion located on the other side in the axial direction. [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. 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] An embodiment of a fixing structure according to the present invention will be described with reference to Figures 1 to 5. Note that 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 are engaged by inserting and engaging engagement portion 23 into insertion opening 24. Note that the configuration of holding member 20 is merely an example, and holding members with 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 14c, 14d in the axial direction X. In other words, the upper locking pieces 14a, 14b can also be said to be locking pieces located on one side of the first upper locking pieces 14a, 14b in the axial direction X (on the bolt insertion hole 12 side). In the fixing structure 10 of this embodiment, the pair of upper locking pieces 14a, 14b correspond to a pair of second locking pieces, and the pair of lower locking pieces 14c, 14d correspond to a pair of first locking pieces. 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 on the side of the bolt receiving space portion 11e, the second locking piece portion 14b and the first 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 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 lower locking pieces 14c, 14d include elastically deformable wing portions 141 and claw portions 142 that protrude from the wing portions 141 and are engaged with the bolt groove portions 51. 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 in the end wall portion 11d located on the other side in the axial direction. 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.

[0022] The lower locking pieces 14c, 14d flex when the stud bolt 50 is inserted, thereby reducing the force (insertion force) required when inserting the stud bolt 50. Reducing the thickness of the lower locking pieces 14c, 14d can reduce the insertion force of the stud bolt 50, but if the stud bolt 50 is inserted deviating from the axial direction, the elastic force of the lower locking pieces 14c, 14d cannot return the insertion direction of the stud bolt 50 to the axial direction, and the tip of the stud bolt 50 cannot be passed through the bolt insertion hole 13. In this embodiment, in order to regulate the insertion direction of the stud bolt 50, the other end of the wing portions 141 of the lower locking pieces 14c, 14d in the axial direction X is fixed adjacent to the bolt insertion hole 13 of the end face wall portion 11d located on the other side of 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. Furthermore, the wing portions 141 of the lower locking pieces 14c, 14d can be made thinner than the wing portions 141 of the upper locking pieces 14a, 14b, which will be described later. By making the wing portions 141 of the lower locking pieces 14c, 14d thinner, it is possible to reduce the insertion force of the stud bolt 50, but this can cause problems such as damage when the stud bolt 50 is inserted or the stud bolt 50 inserting at an angle. In the fixing structure 10 of 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, so even if the wing portions 141 of the lower locking pieces 14c, 14d are thin-walled, damage caused by the insertion of the stud bolt 50 and the stud bolt 50 can be prevented from entering at an angle. As a result, when attaching the mounting member 1 to a workpiece having a stud bolt 50, the fixing structure 10 prevents the stud bolt 50 from entering at an angle, allowing the mounting member 1 to be properly attached to the workpiece. Note that, 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 be fixed to the bolt insertion hole 13 without any steps (flush).

[0023] Upper locking pieces 14a, 14b are formed to protrude from side wall portions 11b, 11c toward bolt-receiving space portion 11e and extend toward the other side in axial direction X. Second locking pieces 14a, 14b include elastically deformable wing portions 141 and claw portions 142 that protrude from wing portion 141 and are engaged with bolt groove portion 51. The width of upper locking pieces 14a, 14b in the depth direction Z is slightly larger than the diameter of stud bolt 50, for example, approximately 5 mm, similar to upper locking pieces 14c, 14d.

[0024] Like the lower locking pieces 14c, 14d, the upper locking pieces 14a, 14b flex when the stud bolt 50 is inserted, thereby reducing the insertion force of the stud bolt 50. The thickness of the upper locking pieces 14a, 14b is adjusted to adjust the insertion force of the stud bolt 50, but in order to regulate the insertion direction of the stud bolt 50, the wing portions 141 of the upper locking pieces 14a, 14b are made thicker than the wing portions 141 of the lower locking pieces 14c, 14d. If the lower locking pieces 14c, 14d are made thin so that the ends of the wing portions 141 are fixed adjacent to the bolt insertion hole 13, and even when they are bent due to the insertion of the stud bolt 50, they can still regulate the insertion direction of the stud bolt 50, but if the wing portions 141 of the upper locking pieces 14a, 14b are made thin like the first locking pieces 14c, 14d, they cannot regulate the insertion direction of the stud bolt 50, and there is a risk that the stud bolt 50 will enter at an angle. Therefore, it is preferable that the wing portions 141 of the upper locking pieces 14a, 14b be made thicker than the wing portions 141 of the lower locking pieces 14c, 14d.

[0025] In this embodiment, the stud bolt 50 is secured by the lower locking pieces 14c, 14d and the upper locking pieces 14a, 14b, but in applications that do not require high fixing strength of the mounting member to the mounted member, it is not necessary to provide the upper locking pieces 14a, 14b on the fixing structure 10. The fixing structure 10 may also be provided with additional locking pieces, for example, a pair of third locking pieces between the lower locking pieces 14c, 14d and the upper locking pieces 14a, 14b. [Explanation of symbols]

[0026] 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 (second locking piece) 14c, 14d Lower locking piece (first locking piece) 16a, 16b post 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; 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 wing 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, Fixed structure.

2. a pair of second locking pieces provided on the main body portion opposite each other along the width direction, located on the one side of the first locking piece in the axial direction, and locked to the bolt groove of the stud bolt inserted into the main body portion; The first locking piece is thinner than the second locking piece. The fixing structure according to claim 1 .

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