Mounting structure of a clamp

Abstract

The present application provides a mounting structure of a clamp. The mounting structure of the clamp makes the operation of mounting to a mounted member easier, and the mounting portion of the mounted member becomes a simpler shape. The clamp (1) is mounted in a form in which a leg portion (2) protruding downward from a head portion (4) is inserted into a cylindrical insertion hole (11) of the mounted member (10). The clamp (1) has an engagement protrusion portion (3) protruding from the leg portion (2) in a form in which a plurality of the engagement protrusion portions (3) are arranged in an insertion direction (I). The engagement protrusion portion (3) has a sharpened engagement corner portion (3d1, 3d3) having a roundness radius of less than 0.2 mm, and the engagement corner portion (3d1, 3d3) is elastically deformed by sliding on an inner peripheral wall surface (11r) when being inserted into the insertion hole (11), and on the other hand, after being inserted, the engagement corner portion (3d1, 3d3) is elastically restored to be sunk into the inner peripheral wall surface (11r), thereby preventing the clamp (1) from being released from the insertion hole (11).

Description

Technical Field

[0001] This invention relates to the mounting structure of a clamp. Background Technology

[0002] Patent document 1 describes the following fixture mounting structure: the shaft of the fixture body is inserted into the base of the object component, and the fixture body is rotated around the axis by an operating plate on the base, thereby fastening the blade into the circumferential surface of the base and thus combining the fixture body and the object component.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2009-270615 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] However, in the case of the aforementioned clamp, the operability is poor because it requires both insertion and rotation. Furthermore, the elongated shape of the central hole in the base into which the clamp body's shaft is inserted limits its versatility; a simpler shape is desired.

[0008] The problem of the present invention is to provide a mounting structure for a clamp that makes the operation of mounting the component easier and the mounting portion of the component has a simpler shape.

[0009] The means used to solve the problem and the effects of the invention

[0010] The mounting structure of the clamp for solving the above problems is characterized in that the clamp is mounted in such a way that a leg protruding downwards from the head is inserted into a cylindrical insertion hole in the component to be mounted.

[0011] The clamp has a plurality of plate-shaped engaging protrusions extending outward from the outer periphery of the leg in a non-elastic deformation state in the insertion direction toward the insertion hole.

[0012] The engaging protrusion has a sharpened corner with a radius of less than 0.2 mm at its outermost edge, which is located furthest from the axis of the leg on either the upper or lower surface.

[0013] The sharpened corner includes a locking corner that slides on the inner peripheral wall of the insertion hole when inserted into it, causing the locking protrusion to elastically deform. On the other hand, after insertion, it forms a locking state by elastic recovery of the locking protrusion and sinks into the inner peripheral wall, thereby preventing the clamp from detaching from the insertion hole.

[0014] According to the structure of the present invention described above, for insertion into a simple cylindrical insertion hole, the engaging protrusion that presses against its inner peripheral wall surface does not have a smoothly curved arc at its outermost corner, as was the case previously, but rather a sharpened corner with almost no arc. Therefore, because of the sharpened corner (engaging corner), the engaging protrusion more easily and firmly sinks into the inner peripheral wall surface of the insertion hole, thus reliably preventing it from loosening from the insertion hole simply by relying on the insertion leg. This avoids the inconvenience of rotating the protrusion after insertion into a long hole, as was previously required to create this sinking effect.

[0015] The engaging protrusions are formed such that, when their length is L1 and their plate thickness is L2, at least 80% of the leg side in the length direction satisfies L1×1 / 3≤L2. According to this structure, each engaging protrusion has a certain thickness up to the position closest to the front end. This increases the rigidity of each engaging protrusion, making it easier for the engaging corners to firmly engage with the inner peripheral wall of the insertion hole. Furthermore, even under a force applied in the backward pull-out direction, each engaging protrusion is difficult to bend due to its rigidity, thus effectively resisting the force and preventing loosening. In existing clamps, this portion is designed to bend in a way that reduces insertion resistance during insertion, therefore the thickness cannot be as described in this invention.

[0016] Furthermore, in this case, the length L1 of the engaging protrusion relates to at least one engaging corner of each engaging protrusion, and in a cross-section including the axis of the engaging corner and the leg, it is defined as the length of the straight line PQ from the vertex P of the engaging corner to the connection point Q of the engaging protrusion and the leg. The plate thickness L2 of the engaging protrusion is defined as the length from one surface to the other in a direction orthogonal to the surfaces having engaging corners on the upper and lower surfaces. The length direction of the engaging protrusion is defined as the extension direction of the straight line PQ. When multiple engaging corners exist in the engaging protrusion, L2 and L1 only need to satisfy the above relationship in the cross-section including any one of the engaging corners.

[0017] Each of the engagement corners functions as thread teeth by being distributed on a predetermined helix coaxial with the axis of the leg, allowing the clamp, in the engaged state, to be pulled out of the insertion hole by rotating it about the axis in a predetermined direction. According to this structure, for example, by providing an engagement part (tool engagement part, such as a cross-shaped groove) for rotating the clamp in the upward direction of the helix using a predetermined tool at the head of the upper end of the leg, the clamp can be removed from the insertion hole using this tool, enabling the clamp to be reused.

[0018] The mounting structure of the clamp can include an insertion completion transmission unit that generates at least one of sound, touch, and shape change when the leg is inserted into the insertion hole to a predetermined depth. According to this structure, the operator can be notified of assembly completion when the clamp is inserted into the insertion hole. This allows the clamp to be reliably inserted into the insertion hole to the predetermined depth. Since the assembly operation may take place in a location where sound is difficult to hear, conveying assembly completion through touch and shape change makes it easier for the operator to understand.

[0019] The clamp can be installed on the mounted member by inserting the tip of the clamping member, which is different from the mounted member, through the through hole of the leg into the insertion hole. According to this structure, the clamping member, as a third component, is clamped between the securely assembled mounted member and the clamp, thus achieving a clamped state. This allows for a structure that more securely assembles all three components. Attached Figure Description

[0020] Figure 1 This is an exploded perspective view of the mounting structure of the clamp in the first embodiment.

[0021] Figure 2 yes Figure 1 The front view of the fixture.

[0022] Figure 3 yes Figure 1 Side view of the fixture.

[0023] Figure 4 yes Figure 3 Sectional view IV-IV.

[0024] Figure 5 yes Figure 4 An enlarged view of the V-shaped part.

[0025] Figure 6 yes Figure 2 An enlarged view of section VI.

[0026] Figure 7 yes Figure 3 An enlarged view of part VII.

[0027] Figure 8 It was observed from a diagonal downward angle. Figure 1 A magnified 3D view of a portion of the fixture.

[0028] Figure 9 yes Figure 8 An enlarged view of section IX.

[0029] Figure 10 It is Figure 3 The XX section will Figure 1 A cross-sectional view illustrating the steps of installing the clamp onto the component being installed.

[0030] Figure 11 It continues Figure 10 A sectional view.

[0031] Figure 12 It continues Figure 11 A sectional view.

[0032] Figure 13 It is Figure 4 The AA section schematically represents the cross-sectional view of the first engaging protrusion when the clamp is inserted into the insertion hole.

[0033] Figure 14 It continues Figure 13 A sectional view.

[0034] Figure 15 It continues Figure 14 A sectional view.

[0035] Figure 16 It is Figure 4 The BB section schematically represents the cross-sectional view of the second engaging protrusion when the clamp is inserted into the insertion hole.

[0036] Figure 17 It continues Figure 16 A sectional view.

[0037] Figure 18 It continues Figure 17 A sectional view.

[0038] Figure 19 This is an exploded perspective view of the fixture installation structure of the first modified example.

[0039] Figure 20 It is used for the purpose of... Figure 19 A cross-sectional view illustrating the steps of installing the clamp onto the component being installed.

[0040] Figure 21 It continues Figure 20 A sectional view.

[0041] Figure 22 It continues Figure 21 A sectional view.

[0042] Figure 23 This is an exploded perspective view of the mounting structure of the fixture in the second variation.

[0043] Figure 24 It is used for the purpose of... Figure 23 A cross-sectional view illustrating the steps of installing the clamp onto the component being installed.

[0044] Figure 25 It continues Figure 24 A sectional view.

[0045] Figure 26 It continues Figure 25 A sectional view.

[0046] Figure 27 This is a perspective view of the fixture used in the third variation.

[0047] Figure 28 yes Figure 27 An exploded perspective view of the fixture's installation structure.

[0048] Figure 29 yes Figure 27 The front view of the fixture.

[0049] Figure 30 yes Figure 27 Side view of the fixture.

[0050] Figure 31 yes Figure 30 Sectional view of XXXI-XXXI.

[0051] Figure 32 yes Figure 29 An enlarged view of part XXXII.

[0052] Figure 33 yes Figure 30 An enlarged view of part XXXIII.

[0053] Figure 34 It is Figure 31 The EE section schematically represents a cross-sectional view of the first engaging protrusion when the clamp is inserted into the insertion hole.

[0054] Figure 35 It continues Figure 34 The image.

[0055] Figure 36 It continues Figure 35 The image.

[0056] Figure 37 This is a sectional view of the mounting structure of the clamp in the fourth variation.

[0057] Figure 38 This is a cross-sectional view schematically showing the engaging protrusion when the clamp of the fifth modified example is inserted into the insertion hole.

[0058] Figure 39 It continues Figure 38 The image.

[0059] Figure 40 It continues Figure 39 The image.

[0060] Figure 41 It is Figure 4 The AA section is a schematic cross-sectional view representing another method of specifying the plate thickness of the engagement protrusion.

[0061] Explanation of reference numerals in the attached figures

[0062] 100: Fixture mounting structure;

[0063] 1: Fixture;

[0064] 2: Legs;

[0065] 3, 9: Engaging protrusions;

[0066] 3d0~3d4, 9d0~9d4, 9c1: Outer edge (sharpened corner);

[0067] 3d1, 3d3, 9d1, 9d3, 9c1: Engaging corners;

[0068] 4: Head;

[0069] 4R: Outer periphery (insertion completes the transfer unit);

[0070] 5: Flexible locking plate (insertion completes the transfer unit);

[0071] 10: The component being installed;

[0072] 11: Insertion hole;

[0073] 20: Clamping components;

[0074] 21: Through hole;

[0075] L1: Length of the engaging protrusion;

[0076] L2: Thickness of the plate of the engaging protrusion;

[0077] I: Insertion direction. Detailed Implementation

[0078] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0079] The mounting structure of the clamp in this embodiment is Figures 1-3 The clamp 1 shown is used to insert the leg 2 into Figure 1 The structure 100, formed by mounting the mounted component 10 in the form of a cylindrical insertion hole 11 (see reference), is formed by mounting the component 10 in the form of a cylindrical insertion hole 11. Figure 12 The component 10 to be installed here is a vehicle component, which has an insertion hole 11 formed in which a straight cylinder has an axis in a generally vertical direction relative to its main surface.

[0080] Furthermore, the cylindrical insertion hole in this invention can be any hole having an inner peripheral wall surface formed on a curved surface of the same shape as the outer peripheral surface of the predetermined cylindrical shape. There are no limitations on the shape of the bottom surface or the opening; it can be a through hole or a bottomed hole. Additionally, "generally cylindrical" refers to a shape including a hole width (diameter) with an error of ±5% relative to the radial direction orthogonal to the axis of the insertion hole, and a shape with a mold-raising cone angle of 1 degree or less. The aforementioned error is also allowed in the generally vertical direction described above.

[0081] like Figure 2 as well as Figure 3 As shown, the clamp 1 integrally has a head 4, a leg 2 protruding downward from the head 4, and a plate-shaped engaging protrusion 3 extending upward and obliquely outward from the outer periphery of the leg 2. Here, the clamp 1 and the mounted member 10 are formed as resin injection molded bodies.

[0082] Leg 2 is inserted from the lower end (front end) of head 4 into the insertion hole 11 of the mounted component 10 in a cylindrical position. The direction of the axis 2z of leg 2 (axial direction) is consistent with the insertion direction I into the insertion hole 11.

[0083] The head 4 is bulging outward (peripherally) from the upper end (base end) of the leg 2 along its axis 2z. Here, the head 4 extends in a roughly disc-like shape around the axis 2z. When the leg 2 is inserted into the insertion hole 11, the head 4, because its lower surface 4D is opposite and facing the peripheral surface 12 of the opening of the insertion hole 11, is not inserted into the insertion hole 11 (see reference). Figures 10-12 ).

[0084] like Figure 2 as well as Figure 3 As shown, multiple engaging protrusions 3 are arranged at equal intervals along the insertion direction I in the leg 2. Each engaging protrusion 3 is formed as a plate extending upward and obliquely outward from the outer periphery of the leg 2 in its natural state (inelastic deformation state without elastic deformation). Each engaging protrusion 3 can elastically deform its front end side opposite to the leg 2 by using the leg 2 side as a fulcrum.

[0085] In addition, such as Figure 4 as well as Figure 5 As shown, in either the upper surface 3C or the lower surface 3D (here only the lower surface 3D), each engaging protrusion 3 has an outermost edge at its outer edge, which is the position furthest from the axis 2z of the leg 2. Here, as... Figure 8 as well as Figure 9As shown, in all the engaging protrusions 3, the outermost edges 3d1 and 3d3 can be defined on the outer edges 3d0 to 3d4 of the lower surface 3D. Furthermore, at least the outermost edges 3d1 and 3d3 are formed with a corner radius of less than 0.2 mm, and more preferably, are sharpened into sharpened corners with a corner radius of 0.1 mm or less. The aforementioned sharpened corners 3d1 and 3d3 are as follows... Figures 10-12 When the clamp 1 shown is inserted into the insertion hole 11, and after insertion (after insertion), it functions as the engaging corner (3d1, 3d3) that interferes with and engages with its inner peripheral wall 11r (see reference). Figures 13-15 as well as Figures 16-18 ).

[0086] Furthermore, in this embodiment, the outer edges 3d0 to 3d4 of the lower surface 3D of each engaging protrusion 3 are all sharpened corners as described above, with a fillet radius of 0 mm. The lower surface 3D forms a flat surface. On the other hand, in each engaging protrusion 3, for all other corners (e.g., corner surfaces a, b, c, e, f, g, h, refer to...) except for the outer edges 3d0 to 3d4 of the lower surface 3D... Figure 5 All of them are formed into gently curved surfaces (arcs). The upper surface 3C forms a flat surface.

[0087] When the engaging corner portions 3d1 and 3d3 are inserted into the insertion hole 11, they slide on the inner peripheral wall surface 11r (refer to...). Figure 14 as well as Figure 17 This generates an elastic deformation that causes the front end side (the engaging corners 3d1 and 3d3 side) to flex upward relative to the engaging protrusion 3. On the other hand, after the engaging corners 3d1 and 3d3 are inserted into the insertion hole 11 (after insertion), they form an engaging state in which they are trapped in the inner peripheral wall surface 11r due to the elastic recovery of the engaging protrusion 3 (see reference). Figure 15 as well as Figure 18 This engagement prevents the clamp 1 from detaching from the insertion hole 11, and the clamp 1 is mounted on the component 10 to form the mounting structure 100.

[0088] The engaging corners 3d1 and 3d3 here are the lower edges of the corner surfaces e and g on both ends of the front face 3T, which are located furthest from the axis 2z of the leg 2, in the circumferential direction relative to the axis 2z. Figures 5-7 as well as Figure 9 (within the dashed circle). The front end surface 3T is a surface that forms the engaging corner portions 3d1 and 3d3 together with the lower surface 3D, constituting a vertical surface extending from the engaging corner portions 3d1 and 3d3, which are connecting portions to the lower surface 3D, in the vertical direction. The front end surface 3T is also part of the entire side surface 3A, 3B, 3T of the engaging protrusion 3, and is composed of surfaces t, c, e, f, g, and h, including a flat center and corner portions that curve around its periphery. In addition, side surface 3A is composed of surfaces s and a (refer to...). Figure 6The side 3B is composed of surfaces u and b (refer to...) Figure 7 )constitute.

[0089] Furthermore, the engaging protrusion 3 is formed to be thicker than in the past in this invention. Moreover, the engaging protrusion 3 is not only thicker at the base end but also thicker up to the front end, resulting in higher rigidity overall from the base end to the front end. Therefore, after the leg 2 is inserted into the insertion hole 11 (after insertion), the engaging protrusion 3 more easily sinks into the inner peripheral wall surface 11r.

[0090] The thickness of the engaging protrusion 3 is formed to meet the following requirements. That is, as... Figure 13 As shown, when the plate-shaped engaging protrusion has a length of L1 and a plate thickness of L2, it is formed such that the plate thickness L2 is more than 1 / 3 of the length L1 in at least 80% of the interval (OQ) on both sides of the leg in the length direction (L1×1 / 3≤L2).

[0091] Furthermore, in this case, the length L1 of the engaging protrusion 3 relates to at least one of the engaging angles 3d1 and 3d3 of each engaging protrusion 3 (here, 3d1), in the cross section including the engaging angle (3d1) and the axis 2z of the leg 2 (see reference). Figure 13 In the above embodiment, the length of L1 and L2 is defined as the length of the straight line PQ from the vertex P of the engaging corner 3d1 to the connection point Q of the engaging protrusion 3 and the leg 2. The plate thickness L2 of the engaging protrusion 3 is defined as the length of the engaging protrusion 3 from one surface (lower surface 3D) to another surface (upper surface 3C) in the orthogonal direction relative to the surfaces (lower surface 3D) having engaging corners 3d1 and 3d3 in the upper and lower surfaces. The length direction of the engaging protrusion 3 is defined as the extension direction of the straight line PQ. As in this embodiment, when multiple engaging corners 3d1 and 3d3 exist in the engaging protrusion 3, the relationship between L1 and L2 described above does not need to be satisfied in all of the multiple engaging corners 3d1 and 3d3, as long as at least one (3d1 in this case) is satisfied.

[0092] Furthermore, the plate thickness L2 of the engaging protrusion 3 here is defined as follows within the two-tenths interval (PO) on the front end side opposite to the leg 2 in the aforementioned length direction of the engaging protrusion 3. That is, the engaging protrusion 3 is defined such that, in the aforementioned cross-section (refer to...) Figure 13 In the two-part interval (PO) on the front end side of the engaging protrusion 3, the outer edge line M formed by the cutting line C when the engaging protrusion 3 is cut in a direction orthogonal to the straight line PQ passes through a position that coincides with or is further outward (away from the straight line PQ) of the straight line RP from the end R on the leg 2 side of the outer edge line M to the vertex P of the engaging corner 3d1.

[0093] As described above, the engaging protrusion 3, with a plate thickness L2, is formed to be thicker than before, such that its front end face 3T is nearly opposite to the inner peripheral wall surface 11r of the insertion hole 11 when the leg 2 is inserted into the insertion hole 11 and after insertion. In this embodiment, the front end face 3T of the engaging protrusion 3 is configured such that a portion of its lower edge (engaging corners 3d1, 3d3) is close to the inner peripheral wall surface 11r by being recessed into it, while the upper edge is also close to the inner peripheral wall surface 11r. The entire front end face 3T is inclined relative to the inner peripheral wall surface 11r. This front end face 3T is in the natural state (non-elastic deformation state) when the engaging protrusion 3 is in this state (refer to...). Figure 13 as well as Figure 16 In both the engaging angle 3d1 and engaging angle 3d3, the angle θn formed with the radial axis 2z is 0 degrees or more and 30 degrees or parallel.

[0094] Furthermore, when the engaging protrusion 3 is in its natural state (inelastic deformation state), θn here is illustrated as the angle formed by the front end face 3T and the inner peripheral wall face 11r, which is approximately parallel to the axis 2z. Figure 14 , Figure 15 , Figure 17 , Figure 18 θs and θb represent the angle formed by the front end face 3T and the direction of the axis 2z (inner peripheral wall 11r) when the engaging protrusion 3 slides on the inner peripheral wall surface 11r or when the engaging protrusion 3 is in the engaging state.

[0095] In addition, such as Figure 2 as well as Figure 3 As shown, the clamp 1 has a reinforcing plate portion 6. The reinforcing plate portion 6 is configured at multiple positions in the circumferential direction from the outer peripheral surface of the leg portion 2 (here, from four directions from the outer peripheral surface, see reference). Figure 4 The plate-shaped portion 3 extends outward in the insertion direction I. The engaging protrusion 3 is formed here to span between adjacent reinforcing plate portions 6 in the circumferential direction. This improves the strength and rigidity of the engaging protrusion 3, allowing it to reliably engage with the inner circumferential wall surface 11r (see reference). Figure 7 ).

[0096] In addition, such as Figure 4 as well as Figure 5 As shown, each engaging protrusion 3 has a cutout on its outer side in the region near the connection of the two reinforcing plate portions 6 connected on both sides in the circumferential direction, forming cutout portions 3V and 3U. This slightly increases the elasticity of the engaging protrusion 3 at its front end side (front end face 3T side), making insertion into the insertion hole 11 easier to a certain extent.

[0097] The cutout 3V is not reflected in the cross section including the engaging corner 3d1 and the leg 2 along the axis 2z. Figure 4 Section AA: Refer to Figures 13-15 However, it is reflected in the cross section of axis 2z, which includes the engaging corner 3d3 and the leg 2. Figure 4 BB section: refer to Figures 16-18 In the figure, in the engaging protrusion 3, the outermost front end side (engaging angle 3d1 side) of the engaging angle 3d3 side is slightly more flexible than the cutting portion 3V due to the presence of the cutting portion 3V in the middle. Therefore, the engaging protrusion 3 of this embodiment has: a first engaging angle 3d1, which has higher rigidity up to the front end side and has the effect of being deeply and reliably embedded in the inner peripheral wall surface 11r of the insertion hole 11; and a second engaging angle 3d3, whose front end side is more flexible than the first engaging angle 3d1 due to the cutting portion 3V, and has the effect of easy insertion due to elastic deformation. Furthermore, regarding the plate thickness L2 of the engaging protrusion 3, when there are multiple engaging angles in the engaging protrusion 3, it is sufficient to specify it in a form where at least one of them is the reference. In this embodiment, the first engaging corner portion 3d1 serves as a reference, and L1 and L2, determined based on this first engaging corner portion 3d1, satisfy the plate thickness L2 specified above (refer to...). Figure 13 ).

[0098] The engaging protrusion 3 of this embodiment will be described in more detail.

[0099] like Figure 2 As shown, the engaging protrusion 3 is located in the first side of the first orthogonal direction 2x in the radial direction orthogonal to the axis 2z of the leg 2. Figure 2 (right side) and the opposite second side ( Figure 2 On the left side, it is formed symmetrically, clamping the axis 2z. Additionally, as... Figure 3 As shown, the engaging protrusion 3 is located on the first side of the second orthogonal direction 2y, which is orthogonal to both the axis 2z and the first orthogonal direction 2x. Figure 3 (right side) and the opposite second side ( Figure 3 It is also symmetrically formed by clamping the axis 2z in the left side. For example... Figure 4 As shown, in this embodiment, there are four engaging protrusions 3 that surround the leg 2 in the circumferential direction. These four engaging protrusions 3 are arranged in multiple groups at predetermined intervals along the axis 2z (axial direction).

[0100] In addition, such as Figure 4 As shown, on the first side of the first orthogonal direction 2x ( Figure 4 (top) and second side ( Figure 4 The two adjacent engaging protrusions 3, which are respectively clamped in the reinforcing plate part 6 on the lower side, are in the same position. Figure 2The diagram shows the engaging protrusion 3 near the front of the left and right reinforcing plate portions 6, and another engaging protrusion 3 not shown because it is located on the inner side of the left and right reinforcing plate portions 6. Figure 2 The engaging protrusions 3 on the left side of the reinforcing plate 6, located near the front and inside sides, are positioned obliquely upward and outward at the same angle relative to the axis 2z of the leg 2 in the first orthogonal direction 2x. Figure 2 The middle part is a flat plate extending diagonally upwards and to the left, such as... Figure 6 As shown, the upper surface 3C on the near-front side in the insertion direction I and the lower surface 3D on the inner side extend from each other onto the same planes S1 and S2, respectively. Here, planes S1 and S2 form mutually parallel planes. On the other hand, in Figure 2 The engaging protrusions 3 on the right side of the reinforcing plate 6, located near the front and inside sides, are positioned obliquely upward and outward at the same angle relative to the axis 2z of the leg 2 in the first orthogonal direction 2x. Figure 2 The middle part is a flat plate extending diagonally upward and to the right, and... Figure 6 Similarly, the upper surfaces 3C and S1, and the lower surfaces 3D and S2 are related in the same way. The upper surfaces 3C on the near-front side of insertion direction I, and the lower surfaces 3D on the inner side, extend onto the same planes S3 and S4, respectively. Here, planes S3 and S4 also form mutually parallel planes.

[0101] In addition, such as Figure 2 As shown, the clamp 1 has an elastic locking piece 5 as the insertion completion transfer unit of the present invention.

[0102] The insertion completion transmission unit is a unit that, upon insertion of the leg 2 relative to the insertion hole 11 to a predetermined depth, generates one or more of the following—sound, tactile sensation, and shape change—to convey the completion of the installation to the installation operator.

[0103] In this embodiment, the elastic locking piece 5 constituting the insertion completion transfer unit has: an elastic piece portion 5M that extends obliquely outward from the lower surface 4D of the head 4 (or from the upper end of the leg 2) in its natural state (non-elastic deformation state) in a manner away from the leg 2 in the insertion direction I; and a front locking portion 5L that is provided at the front end of the elastic locking piece 5, which can form an elastic deformation of the elastic piece portion 5M in the insertion direction I near the front side, thereby wrapping back to the outer edge of the head 4 and locking, preventing the return to the natural state position.

[0104] The elastic locking piece 5 is formed such that the base end side of the elastic piece portion 5M, which is connected to the head 4 (or leg 2), is more easily elastically deformed than other sections in the length direction of the elastic piece portion 5M. Thus, as... Figures 10-12As shown, the elastic locking piece 5 can swing (rotate) its front end side up and down with the base end side as a fulcrum. Through this swinging, the elastic locking piece 5 can bring the front locking part 5L close to the outer edge locking part 4L provided on the outer edge of the head 4. Furthermore, by passing over the outer edge locking part 4L, it can form a locking state with the outer edge locking part 4L (a state that prevents it from loosening downwards, see reference). Figure 12 ).

[0105] Then, the assembly operator can feel the sound and touch as the front locking part 5L passes the outer edge locking part 4L. Furthermore, since the shape change can also be visually confirmed, the operator can identify the assembly state when the leg 2 of the clamp 1 is inserted to a predetermined depth relative to the insertion hole 11. In this locked state, the elastic piece 5M is pressed towards the lower surface 4D of the head 4 through the peripheral surface 12 of the opening of the insertion hole 11, maintaining its outward extension along the lower surface 4D.

[0106] Furthermore, the elastic locking piece 5 here is formed on both sides of the axis 2z in a direction orthogonal to the axis 2z (here, the first orthogonal direction 2x). In addition, in the head 4, the outer edge locking portion 4L for locking the front end locking portion 5L of the elastic locking piece 5 is formed as a thin-walled portion that is thinner than the central region around the axis 2z so that the front end locking portion 5L can easily pass over.

[0107] use Figures 10-18 The installation steps for mounting the clamp 1 onto the component 10 to be installed are described.

[0108] First, such as Figure 10 As shown, the leg 2 of the clamp 1 is inserted into the cylindrical insertion hole 11 of the mounted member 10 from the front end 2T, which is located opposite to the head 4, so that the axes 2z and 11z of both are aligned. The front end 2T of the leg 2 has a pointed shape, which makes insertion into the insertion hole 11 easier.

[0109] If the leg 2 is inserted into the insertion hole 11, the four lowest engaging protrusions 3 of the engaging protrusions 3 abut against the peripheral surface 12 of the opening of the insertion hole 11 (see reference). Figure 13 as well as Figure 16 In this process, by further pressing the leg 2 into the insertion hole 11, the engaging protrusion 3 is pressed into the insertion hole 11 in a way that its front end side elastically deforms towards the near front (upper) side of the insertion direction I, and the insertion of the leg 2 is advanced by the engaging corner portions 3d1 and 3d3 sliding on the inner peripheral wall surface 11r (see reference). Figure 14 as well as Figure 17If the lowest engaging protrusion 3 is pressed into the insertion hole 11, then the next engaging protrusion 3 abuts against the peripheral surface 12 of the opening of the insertion hole 11. In other words, each abutment further presses the leg 2 into the insertion hole 11, thus inserting the leg 2 into the insertion hole 11. All the engaging protrusions 3 pressed into the insertion hole 11 undergo an upward elastic deformation at their respective front ends, and their respective engaging corners 3d1 and 3d3 slide on the inner peripheral wall surface 11r (refer to...). Figure 14 as well as Figure 17 ).

[0110] In practice, instead of pressing the engaging protrusion 3 into the insertion hole 11 segment by segment, the installer can press the engaging protrusion 3 into the insertion hole 11 all at once, up to the last segment (topmost segment) or near the last segment.

[0111] like Figure 11 As shown, if the engaging protrusion 3 enters the insertion hole 11, the elastic locking piece 5 contacts the opening peripheral surface 12 of the insertion hole 11. If it enters further, the elastic locking piece 5 is pushed upward by the opening peripheral surface 12 to approach the head 4, and swings (rotates) with the base end side as the fulcrum. Thus, the front locking part 5L approaches the outer edge of the head 4 from the lower side. Then, when the engaging protrusion 3 of the final section (uppermost section) enters the insertion hole 11, and the leg 2 is inserted to a predetermined depth relative to the insertion hole 11, the elastic locking piece 5 swings (rotates) further, as... Figure 12 As shown, the front locking part 5L extends beyond the outer edge of the head 4, and the tip that extends beyond it locks against the outer edge (outer edge locking part 4L). Thus, the clamp 1 is inserted into the insertion hole 11, forming the mounting structure 100.

[0112] like Figure 14 as well as Figure 17 As shown, during the stage where the leg 2 enters the insertion hole 11, the engaging protrusion 3, through the force of inserting the clamp 1 into the insertion hole 11, causes its front end to flex in the opposite direction (upper side) of the insertion direction I while sliding on the inner peripheral wall surface 11r. However, once the clamp 1 is fully inserted into the insertion hole 11 and the aforementioned insertion force is released, the engaging protrusion 3 elastically recovers and begins to engage the corner portions 3d1 and 3d3 relative to the inner peripheral wall surface 11r. Then, as... Figure 15 as well as Figure 18 As shown, by this locking, the leg 2 of the clamp 1 is secured to the insertion hole 11 to prevent loosening. Thus, the clamp 1 is fixed in a locked state relative to the insertion hole 11, forming a mounting structure 100 relative to the mounted member 10.

[0113] Furthermore, in this embodiment, the result of advancing the aforementioned engagement is that not only the engaging corner portions 3d1 and 3d3, but also the sharpened corner portion 3d2 connecting them is engaged in the inner peripheral wall surface 11r. The sharpened corner portion 3d2 does not contact the inner peripheral wall surface 11r when the clamp 1 is inserted into the insertion hole 11, and does not slide on the inner peripheral wall surface 11r. Therefore, although the sharpened corner portion 3d2 has no sliding resistance when the clamp 1 is inserted, it also functions as a quasi-engaging corner portion (also called an auxiliary engaging corner portion) that can engage in the inner peripheral wall surface 11r after insertion. Furthermore, if an engaging corner portion exists, a quasi-engaging corner portion is not required.

[0114] When the installer inserts the clamp 1 into the insertion hole 11, a contact sound can be heard if the engaging protrusion 3 abuts and contacts the peripheral surface 12 of the opening of the insertion hole 11 in sequence. The installer can also feel the contact sensation while hearing this sound. However, because all the engaging protrusions 3 are formed with the same shape, the contact sound and tactile sensation alone cannot determine whether the clamp 1 has been inserted to the predetermined depth relative to the insertion hole 11, i.e., whether the insertion is complete.

[0115] In contrast, in this embodiment, when the clamp 1 is fully inserted into the insertion hole 11, the front locking portion 5L of the elastic locking piece 5 extends beyond the outer edge of the head 4, and the tip locks against the outer edge. Since sound and tactile sensation are generated during this locking, the completion of insertion of the clamp 1 into the insertion hole 11 can be determined by these sensations. The engaging protrusion 3 and the elastic locking piece 5 have completely different rigidities and shapes, resulting in completely different sounds and tactile sensations. Therefore, they can be clearly distinguished and identified from the sound and tactile sensation generated by the engaging protrusion 3. Furthermore, since the locking state of the elastic locking piece 5 is also clearly determined by visual inspection, the completion of insertion can also be determined visually.

[0116] The above description illustrates one embodiment of the present invention, but it is merely an example. The present invention is not limited thereto. As long as it does not depart from the spirit of the technical solution, various modifications such as additions and omissions can be made based on the knowledge of those skilled in the art.

[0117] Hereinafter, embodiments different from those described above, and variations thereof, will be described. Furthermore, parts having common functions with the embodiments described above will be labeled with the same reference numerals, and detailed descriptions will be omitted. Additionally, the embodiments described above, the variations described below, and other embodiments can be appropriately combined and implemented without causing technical inconsistencies.

[0118] The mounted component 10 in the above embodiments can be any component that has at least a cylindrical insertion hole, or it may not be the mounted component in the above embodiments.

[0119] In the insertion completion transmission unit (elastic locking piece 5) of the above embodiments, the installation operator can identify the completion of insertion of the clamp 1 into the insertion hole 11 through sound, touch, and shape change. The insertion completion is accompanied by one or more of these three phenomena. If either or both of these phenomena are used, the installation operator can identify the insertion completion even in noisy environments. Furthermore, in this invention, the insertion completion transmission unit (elastic locking piece 5 of the above embodiments) can also be omitted.

[0120] use Figures 19-22 A first variation of the above embodiment will be described.

[0121] like Figure 19 As shown, in the first modified example, the following mounting structure 100 is formed (refer to...). Figure 22 The mounting structure 100 includes: a clamp 1, which has the same shape as in the above embodiment; a mounted member 10 (here, a plate-like member) having a cylindrical protruding boss 13; and a clamping member 20 (matching member) clamped between the head 4 of the clamp 1 and the mounted member 10. A through hole 21 is formed in the clamping member 20, and a cylindrical insertion hole 11 is formed in the boss 13 protruding from the main surface of the mounted member 10. The clamp 1 is mounted to the mounted member 10 such that the tip of the plate-like clamping member 20, which passes through the through hole 21, is inserted into the insertion hole 11 through the leg 2. Thus, a mounting structure 100 is formed in which the clamp 1 is clamped between the clamp 1 and the mounted member 10 by the clamping member 20 (see reference). Figure 22 In other words, the mounting structure 100 is a structure that uses the clamp 1 to assemble the clamping member 20 onto the mounted member 10.

[0122] In the installation step of installing the clamp 1 in this case onto the component 10, firstly, the leg 2 is inserted into the through hole 21 of the plate-shaped clamping member 20, and its tip is also inserted into the insertion hole 11 of the component 10 to be installed (see reference). Figure 20 Then, similarly to the above embodiment, the leg 2 is inserted into the through hole 21 and the insertion hole 11 (see reference). Figure 21 → Figure 22 The insertion of the leg 2 into the insertion hole 11 is also the same as in the above embodiment, and is performed by the engaging protrusion 3 sliding on the inner peripheral wall surface 11r in the form of elastic deformation (see reference). Figure 14 ).like Figure 22As shown, when the engaging protrusion 3 of the final section (uppermost section) enters the insertion hole 11, and the leg 2 is inserted to a predetermined depth relative to the insertion hole 11, the clamping member 20 abuts (closes) with the opening peripheral surface 12 of the installed member 10, and the opening peripheral surface 22 of the through hole 21 of the clamping member 20 contacts the elastic locking piece 5 (insertion completion transfer unit) on its opposite side. The opening peripheral surface 22 pushes the elastic locking piece 5 upward to bring it closer to the head 4. Through this upward push, the elastic locking piece 5 is locked in a state where the front locking part 5L passes over the outer edge of the head 4. Thus, the insertion of the clamp 1 into the insertion hole 11 is completed. The installation operator can identify this completion by the sound, touch, and visual inspection of the locking state (visual inspection of shape changes) that accompany the locking, which is the same as in the above embodiment. In addition, the engaging protrusion 3 sinks into the inner peripheral wall surface 11r of the insertion hole 11 at this completion, which is also the same as in the above embodiment (see Figure 15 ).

[0123] use Figures 23-26 A second variation of the above embodiment will be described.

[0124] like Figure 23 As shown, in the second variation, the following mounting structure 100 is formed (refer to...). Figure 26 The mounting structure 100 includes: a clamp 1 having the same shape as in the above embodiment except for the head 4; and a mounting member 10 having a cylindrical insertion hole 11. The head 4 here forms an umbrella shape extending outward from the end of the leg 2 toward the front end side of the leg 2, and its outer periphery 4R forms the insertion completion transfer unit of the present invention.

[0125] In this case, the installation steps for mounting the clamp 1 to the component 10 being installed are basically the same as in the above embodiment (refer to...). Figure 24 → Figure 25 ), such as Figure 26 As shown, when the leg 2 is inserted relative to the insertion hole 11 to a predetermined depth, the outer periphery 4R of the umbrella-shaped head 4 contacts the opening peripheral surface 12 of the mounted member 10, and the opening peripheral surface 12 pushes the outer periphery 4R upward. Through this upward push, the outer periphery 4R expands outward from the front end of the leg 2 in an umbrella shape (see reference). Figure 25 It becomes an inverted umbrella shape that is bent upwards from the outer periphery (see reference). Figure 26 Thus, the insertion of the clamp 1 into the insertion hole 11 is completed, forming the mounting structure 100 of the clamp 1. Furthermore, the installation operator can easily identify the completion by the sound, touch, and visual inspection of the inverted umbrella shape (visual inspection of shape change) accompanying the bending of the outer periphery 4R.

[0126] use Figures 27-33 A third variation of the above embodiments will be described.

[0127] like Figure 27 as well as Figure 28 As shown, the clamp 1 in the third modified example is almost identical in shape to the above embodiment, except that a portion of the engaging protrusion 3 becomes the engaging protrusion 9. Multiple engaging protrusions 9 are arranged in the leg 2 along the insertion direction I, similar to engaging protrusions 3. Furthermore, the engaging corner portions 3d1, 3d3, 9d1, and 9d3 of each engaging protrusion 3 and 9 are positioned dispersedly on a spiral coaxial with the axis 2z of the leg 2. Because of this dispersed position on the spiral, the clamp 1 cannot be directly pulled upwards from the insertion hole 11 when the mounting structure 100 is formed, but it can be pulled out by rotating it in a predetermined direction around the axis 2z.

[0128] The engaging angles 3d1, 3d3, 9d1, and 9d3 of each engaging protrusion 3 and 9 are dispersed on a single spiral coaxial with the axis 2z, or on multiple spirals coaxial with and parallel to the direction of the axis 2z (axial direction) (here, on two non-overlapping spirals H1 and H2). (Refer to...) Figure 27 Therefore, for example, by providing a locking part 8 (tool locking part, here a cross-shaped groove) for rotating the clamp 1 in the upward direction of the spiral by a predetermined tool (e.g., a driver) on the head 4, the clamp can be easily removed from the insertion hole 11 by the tool. In addition, the clamp 1 can also be reused.

[0129] like Figure 29 as well as Figure 30 As shown, in the third modified example, the engaging protrusions 3 and 9, the engaging protrusion 3 adjacent to the reinforcing plate 6 is formed as a plate extending upward and outward from the outer periphery of the leg 2 in its natural state (non-elastic deformation state), forming the same shape as in the above embodiment. However, the engaging protrusion 9 is formed as a plate extending downward and outward from the outer periphery of the leg 2 in its natural state. Furthermore, these engaging protrusions 3 and 9 are the same as in the above embodiment in that the front end can elastically deform up and down with the leg 2 side as a fulcrum. Since the engaging protrusion 3 has the same shape as in the above embodiment, its description is omitted.

[0130] The engaging protrusion 9 will be described in detail. In the engaging protrusion 9, which extends downwards and obliquely outwards, the outermost edges 9d1 and 9d3 of the outer edges 9d0 to 9d4 of the lower surface 9D, located furthest from the axis 2z, are formed into sharpened corners (see reference). Figures 31-33Furthermore, here, all outer edges 9d0 to 9d4 become sharpened corners. The sharpened corners 9d1 and 9d3 constituting the outermost edge function as engaging corners that interfere with and engage with the inner peripheral wall surface 11r of the clamp 1 during insertion into the insertion hole 11 and after insertion (see reference). Figure 34 When the engaging corner portions 9d1 and 9d3 are inserted into the insertion hole 11, they slide on the inner peripheral wall surface 11r (see reference). Figure 35 This generates an elastic deformation that causes the front end side (sharpened corners 9d1, 9d3 side) to bend upward relative to the engaging protrusion 9. On the other hand, after insertion, it forms an engaging state where it is trapped in the inner peripheral wall surface 11r due to the elastic recovery of the engaging protrusion 9 (see reference). Figure 36 ).

[0131] Furthermore, in this third variation, the sharpened corner 9d1 is the first engaging corner, and the sharpened corner 9d3 is the second engaging corner. The upper surface 9C and the lower surface 9D are parallel flat surfaces. Among the side surfaces 9A, 9B, and 9T, side surface 9T constitutes the front end face of the engaging protrusion 9.

[0132] Furthermore, the same provisions as those in the above embodiments apply to the thickness of the engaging protrusions 3 and 9 (see [reference]). Figure 13 as well as Figure 34 Even the engaging protrusion 9 is defined in the same way as the engaging protrusion 3 (see reference). Figure 34 The thickness of the material is formed when it is inserted into the insertion hole 11 in the leg 2 (refer to...). Figure 35 ) and after insertion (refer to Figure 36 The front end face 9T is shaped to be approximately opposite to the inner peripheral wall 11r of the insertion hole 11. Here, the front end face 9T is positioned in its natural state (inelastic deformation state) (refer to...). Figure 34 The angle θn formed by the radial axis 2z (inner peripheral wall 11r) is between 0 and 30 degrees.

[0133] use Figure 37 A fourth variation of the above embodiments will be described.

[0134] In the fourth variation, an assembly section 7 is provided for assembling other components 30, different from the mounted component 10, onto the head 4 of the clamp 1. Then, the mounting structure 100 of the clamp 1 is formed with the other components 30 assembled onto the assembly section 7.

[0135] use Figures 38-40 A fifth variation of the above embodiments will be described.

[0136] In the fifth variation, the outermost edge of the upper surface 9C of the engaging protrusion 9 extending obliquely downward from the leg 2 has an outermost edge 9c1 at the position furthest from the axis 2z of the leg 2. This outermost edge 9c1 is formed as a sharpened corner, functioning as an engaging corner. Thus, when the engaging corner 9c1 is inserted into the insertion hole 11, it slides on its inner peripheral wall surface 11r (see reference). Figure 39 This generates an elastic deformation that causes the front end side (sharpened corners 9d1, 9d3 side) to bend upward relative to the engaging protrusion 9. On the other hand, after insertion, it forms an engaging state in which it is trapped in the inner peripheral wall surface 11r by the elastic recovery of the engaging protrusion 9 (see reference). Figure 40 ).also, Figures 38-40 The cross section shown is with Figure 13 The same cross-section is taken in the engaging protrusion 9, cut along the axis 2z that includes the engaging corner 9c1 and the leg 2. Furthermore, the engaging protrusion 9 in the fifth embodiment can also be replaced with an engaging protrusion 3 extending obliquely upward from the leg 2.

[0137] The plate thickness L2, which is suitable for the engaging protrusion 3 of the present invention, can be specified by another method.

[0138] For example, P and Q used in the above embodiments can also be set using methods different from those described above. That is, Figure 41 The 3rd part of the card is with Figure 13 Similarly, in the cross-section shown by cutting the engaging protrusion 3, the engaging corner 3d1 can be set as the vertex P, and the intersection of an approximately straight line that passes through the engaging corner 3d1 relative to the ridge line that continues from the vertex P towards the base end side (leg 2 side) of the engaging protrusion 3 and the cross-section D obtained by cutting the engaging protrusion 3 from the leg 2 can be set as the connection point Q between the engaging protrusion 3 and the leg 2. When the lower surface 3D and upper surface 3C of the engaging protrusion 3 are not flat, the above is effective when the thick-walled portion 3E constituting the lower or upper base end side of the engaging protrusion 3 is large, etc., in a manner that smoothly connects the engaging protrusion 3 and the leg 2.

[0139] Furthermore, the plate thickness L2 of the engaging protrusion 3 can be specified as follows. That is, when the engaging protrusion 3 is in its natural state (inelastic deformation state), it involves at least one of the engaging corner portions 3d1 and 3d3 (here, 3d1), and the plate thickness L2 is within the axis 2z including the engaging corner portion 3d1 and the leg portion 2. Figure 13 , Figure 41In the cross section, the plate thickness L2 can also be specified as follows: the length L2 of the cutting line C in the 80% interval (OQ) on the leg 2 side, excluding the 20% interval (PO) on the front side of the straight line PQ, is independent of the cutting position, and satisfies L1×1 / 3≤L2. In the 20% interval (PO) on the front side, the outer edge line M formed by the endpoint of the straight line PQ on the opposite side of the cutting line C passes through a position that coincides with or is further outward from the straight line RP from the end R on the leg 2 side of the outer edge line M to the vertex P of the engaging corner 3d1.

[0140] Furthermore, the thickness of the engaging protrusion in this invention only needs to satisfy at least one of the above-mentioned requirements.

Claims

1. A mounting structure for a clamp, wherein the clamp is mounted by inserting a cylindrical leg of the clamp protruding downward from its head into a cylindrical insertion hole of a vehicle component to be mounted, which is a resin injection molded part, characterized in that, The clamp is a resin injection molded body having a plurality of plate-shaped engaging protrusions extending outward from the outer periphery of the leg in a non-elastic deformation state on the insertion direction side toward the insertion hole. The engaging protrusion has a sharpened corner with a radius of less than 0.2 mm at its outermost edge, which is located furthest from the axis of the leg on either the upper or lower surface. The sharpened corner includes an engaging corner that, when inserted into the insertion hole, slides on the inner peripheral wall of the insertion hole by elastically deforming the engaging protrusion. Furthermore, after insertion, it forms an engaging state within the insertion hole by elastically recovering the engaging protrusion, thus preventing the clamp from dislodging from the insertion hole. After being inserted into the insertion hole, the engaging corner portion forms an engaging state that is locked into the inner peripheral wall surface due to the elastic recovery of the engaging protrusion. The engaging protrusion has an upper surface, a lower surface, and a side surface connecting the upper surface and the lower surface. The engaging corner portion is located on both sides of the front end face of the side surface at the position furthest from the axis, in the circumferential direction relative to the axis. The clamp has multiple reinforcing plates. The reinforcing plate is plate-shaped, extending outward from multiple circumferential locations on the outer peripheral surface of the leg along the insertion direction. The engaging protrusion is formed to span between adjacent reinforcing plate portions in the circumferential direction, allowing the engaging corner portion to engage with the inner circumferential wall surface through elastic recovery after being inserted into the insertion hole. Each of the aforementioned engaging protrusions has a cutout formed on the outer side of the region near the connection of the two reinforcing plates that are connected on opposite sides in the circumferential direction. One of the two cutouts does not appear in the cross-section of the first engaging angle portion (located on one side of the circumferential direction) and the axis, but appears in the cross-section of the second engaging angle portion (located on the other side of the circumferential direction) and the axis, in a manner that extends vertically through the engaging protrusion. The front end of the second engaging angle is more flexible than the first engaging angle because one of the two cutouts is present, which makes insertion easier due to elastic deformation. On the other hand, the first engaging angle has high rigidity up to its front end, which allows it to sink deeper into the inner peripheral wall of the insertion hole.

Images