JP4853497B2 - Clamp fixing structure - Google Patents

Description

  The present invention relates to a clamp fixing structure for holding a member to be fixed such as wiring on a fixing member such as a case.

Conventionally, as a structure for fixing a member to be fixed such as a wiring and a fixing member such as a case, various fixing structures for fixing the clamp to which the member to be fixed and the fixing member are fixed are known. For example, as described in Patent Document 1, a clamp (double-layered) in which a metallic clip having a locking claw portion protruding inward is provided inside a resin-made holding portion formed in a U shape. 2. Description of the Related Art A clamp fixing structure is known in which a clip is inserted into the surface of a plate rib and fixed using a structure clamp). In addition, as described in Patent Document 2, a structure in which a fixed member is fixed to a fixing member using a screw or the like is also known.
JP-A-7-99719 JP 2004-218778 A

  However, the fixing structure as in Patent Documents 1 and 2 uses a metal screw or a locking claw, and requires a separate metal material, which increases the cost. In addition, when the dual structure clamp described in Patent Document 1 is used, since the metal member and the resin member are joined, the number of manufacturing steps of the clamp is increased and the cost is increased. There is a possibility that the fixed member or the like may be damaged by the nail portion, and there is a problem in terms of safety.

  Therefore, a flat plate rib formed integrally with the case and projecting in a direction perpendicular to the case and having a locking groove formed on the side wall surface, and locking claws are formed at both ends of the U-shaped holding portion. A structure in which the resin clamp is fixed by engaging the locking claw portion of the clamp with the locking groove portion of the flat plate rib is also conceivable. However, when the locking groove is formed on the side wall surface of the flat plate rib formed integrally with the case, it is possible to cope with die cutting / cutting only in one axial direction (for example, the vertical direction) at the time of forming the case. Since this is not possible, there is a problem that the number of man-hours for forming the case increases and the cost increases.

  In view of the above points, an object of the present invention is to provide a clamp fixing structure that is inexpensive and highly safe in a clamp fixing structure that fixes a protrusion and a clamp that are integrally formed with a case.

  In order to achieve the above object, according to the first aspect of the present invention, the molded member (2) formed by molding only in one axial direction is integrally formed with the flat surface portion (20) and perpendicular to the flat surface portion (20). A clamp fixing structure for fixing a pair of protrusions (3) and a clamp (1) arranged so as to protrude in a direction, wherein the pair of protrusions (3) are inner wall surfaces ( 3a), an outer wall surface (3b) on the back side of the inner wall surface (3a), an inner wall surface (3a) and an outer wall surface (3b), and a side wall surface (3c) intersecting with the flat surface portion (20). The clamp (1) is formed so as to be able to incline toward or away from each other, and the clamp (1) includes an inner wall support (12) and an outer wall (3b) that support the inner wall (3a) of the pair of protrusions (3). And an outer wall support part (11) for supporting An inner wall support portion is formed which can be configured to sandwich a pair of protrusions (3) in a state of being inclined toward or away from each other by the inner wall support portion (12) and the outer wall support portion (11). One of the support portions (12) and the outer wall support portion (11) is a pair of elasticity that elastically deforms in a direction toward or away from each other by contact with the side wall surfaces (3c) of the pair of protrusions (3). In the abutting step, in which the clamp (1) is moved from the vertical direction to the plane portion (20) in the direction close to the plane portion (20) and the pair of projecting portions (3) and the clamp (1) are brought into contact with each other. The pair of protrusions (3) is inclined in a direction approaching or moving away from each other by an external force, and the pair of elastic support pieces is in a direction approaching each other by contact with the side wall surfaces (3c) of the pair of protrusions (3). Young In the fixing stage in which the pair of protrusions (3) and the clamp (1) are fixed elastically deforming away from each other, the pair of elastic support pieces are brought into contact with the side wall surfaces (3c) of the pair of protrusions (3). The contact is released, the state is restored to the state before the contact stage, and the pair of protrusions (3) is sandwiched by the sandwiching part.

  Thereby, by setting it as the structure which fixes a clamp (1) and a pair of protrusion part (3) integrally molded by the shaping | molding member (2), a metal member is not required separately, and a pair of Since the clamp (1) is not allowed to bite into the protrusion (3), it is possible to realize a clamp fixing structure that is inexpensive and highly safe. Furthermore, the molding of the molding member (2) in which the pair of projecting portions (3) are integrally molded can be molded by molding only in the uniaxial direction, and an increase in the number of man-hours for the molding of the molding member (2) can be suppressed. Therefore, the molding of the molded member (2) can be suppressed at a low cost.

  Further, as in the invention described in claim 2, in the clamp fixing structure described in claim 1, the pair of projecting portions (3) are formed so as to be inclined in a direction approaching each other, and the inner wall support portion (12). Is constituted by a pair of elastic support pieces, and the outer wall support portion (11) is constituted by a pair of outer wall support pieces facing each other with the inner wall support portion (12) interposed therebetween, and the pair of elastic support pieces and the pair of outer walls. The support pieces are formed so that the opposing directions are orthogonal to each other, and the sandwiching portion is configured by a portion of the pair of outer wall support pieces facing each other and a portion of the pair of elastic support pieces facing the pair of outer wall support pieces. In the abutment stage, the pair of elastic support pieces abut against the side wall surfaces (3c) of the pair of protrusions (3) in a state in which the portions facing each other are inclined toward each other by external force. In the direction of approaching or moving away In the fixing stage, the inner wall surfaces (3a) of the pair of protrusions (3) abut against the portions of the pair of elastic support pieces facing the pair of outer wall support pieces, and the pair of protrusions (3) The pair of protrusions (3) may be configured to be held between the holding portions by the outer wall surfaces (3b) coming into contact with the opposing portions of the pair of outer wall support pieces.

  Further, as in the invention described in claim 3, in the clamp fixing structure described in claim 2, each of the pair of projecting portions (3) is constituted by a flat projecting piece, and is in a contact stage. In the above, the pair of elastic support pieces abuts against the side wall surfaces (3c) of the pair of protrusions (3) in a state where the portions facing each other are inclined in a direction approaching each other by an external force, and elastically deform in a direction away from each other. You may comprise.

  In the invention according to claim 4, in the clamp fixing structure according to claim 2, each of the pair of projecting portions (3) is constituted by a pair of projecting pieces (30a, 30b). In the projecting pieces (30a, 30b), the wall surfaces facing each other constitute the side wall surfaces (3c) of the pair of projecting portions (3). However, it is characterized in that the pair of protruding pieces (3) in a state of being inclined in a direction approaching each other due to an external force abuts against the side wall surfaces (3c) facing each other and elastically deforms in a direction approaching each other.

  According to this, since the mutually opposing portions of the pair of elastic support pieces are elastically deformed in a direction approaching each other, it is possible to suppress interference due to contact with other members or the like arranged outside the clamp fixing structure. it can.

  According to a fifth aspect of the present invention, in the clamp fixing structure according to any one of the second to fourth aspects, the pair of outer wall support pieces includes a pair of projecting portions in a state where the portions facing each other are inclined toward each other. (3) It is formed so that it may contact | abut with the outer wall surface (3b), and a pair of protrusion part (3) contact | abuts the mutually opposing site | part of a pair of outer wall support piece in the contact | abutting step, and it approaches each other It is characterized by inclining.

  According to this, in the contact stage in which the pair of protrusions (3) and the clamp (1) are in contact with each other, the pair of protrusions (3) are brought into contact with the opposing portions of the pair of outer wall support pieces. Since the pair of protrusions (3) can be inclined without applying external force from other members or human hands, the man-hours at the contact stage can be reduced. be able to.

  Further, as in the invention described in claim 6, in the clamp fixing structure described in claim 1, the pair of protrusions (3) are formed so as to be inclined in a direction away from each other, and the outer wall support (11). Has a pair of outer wall support pieces (112a, 112b) facing each other with the inner wall support portion (12) interposed therebetween, and each of the pair of outer wall support pieces (112a, 112b) is constituted by a pair of elastic support pieces, The inner wall support portion (12) can come into contact with a pair of protrusions (3) in a state in which a pair of opposing surfaces (124) facing the pair of outer wall support pieces (112a, 112b) are inclined away from each other. The sandwiching portion is formed by a portion of the pair of outer wall support pieces (112a, 112b) facing each other and a pair of facing surfaces (124) of the inner wall support portion (12), and a contact stage. A pair of protrusions The portion (3) is in contact with the pair of opposed surfaces (124) of the inner wall support portion (12) and is inclined away from each other, and the pair of elastic support pieces in the pair of outer wall support pieces (112a, 112b) are The portions facing each other abut against the side wall surfaces (3c) of the pair of protrusions (3) in a state of being inclined away from each other and elastically deform away from each other, and in the fixing stage, the pair of protrusions (3 ) Are in contact with the pair of opposing surfaces (124) of the inner wall support portion (12), and the outer wall surfaces (3b) of the pair of protrusions (3) are a pair of outer wall support pieces (112a, The pair of projecting portions (3) may be configured to be sandwiched by the sandwiching portions by abutting against the mutually facing portions of 112b).

  According to a seventh aspect of the present invention, in the clamp fixing structure according to the first aspect, the pair of projecting portions (3) are inclined in a direction away from the distal end portion (31) that can be inclined toward each other. The clamp (1) has a possible lower end (32) and can be bent into a dogleg shape, and the clamp (1) has a pair of protrusions (3) in addition to the inner wall support (12) and the outer wall support (11). The inner wall support portion (12) is composed of a pair of elastic support pieces facing each other across the contact portion (14). The outer wall support portion (11) is composed of a pair of outer wall support pieces facing each other with the inner wall support portion (12) interposed therebetween, and the opposing directions of the pair of elastic support pieces and the pair of outer wall support pieces are orthogonal to each other. The pair of outer wall support pieces are formed so that the portions facing each other are The pair of projecting portions (3) that are inclined in the approaching direction are formed so as to contact the outer wall surfaces (3b) of the pair of projecting portions (3), and the sandwiching portions are the portions of the pair of outer wall support pieces that face each other and the pair of elastic supports. The pair of outer wall support pieces are configured to be opposed to the pair of outer wall support pieces. In the contact stage, the pair of elastic support pieces are arranged to face each other with the side wall surfaces (3c) of the pair of protrusions (3). The pair of protrusions (3) are in contact with each other and the tip portions (31) of the pair of protrusions (3) are in contact with the opposing portions of the pair of outer wall support pieces, The lower ends (32) of the pair of protrusions (3) are bent into a dogleg shape by coming into contact with the contact part (14), and at the fixing stage, the distal ends (31) of the pair of protrusions (3) Inner wall surface (3a) of the pair of elastic support pieces faces a pair of outer wall support pieces When the outer wall surface (3b) of the tip end portion (31) of the pair of projecting portions (3) is in contact with the mutually facing portions of the pair of outer wall support pieces, the pair of projecting portions (3) are in contact with the portions. It is characterized by being pinched by the pinching portion.

  According to this, in the contact stage in which the pair of projecting portions (3) and the clamp (1) are contacted, the pair of elastic support pieces facing each other in a state before being bent into a U-shape. In order to abut against the side wall surface (3c) of the protrusion (3) and elastically deform away from each other, the side wall (3c) of the pair of protrusions (3) in a state of being inclined toward each other by external force Compared with the case where it contacts, it can be made to contact | abut with the side wall surface (3c) of a pair of protrusion part (3) reliably.

  According to an eighth aspect of the present invention, in the clamp fixing structure according to any one of the first to sixth aspects, the flat surface portion (20) is located near the fixed end portions of the pair of projecting portions (3). A thin part (21, 22, 220) is formed.

  According to this, by thinly deforming the thin-walled portions (21, 22, 220), the pair of projecting portions (3) can be configured to be tiltable in a direction toward or away from each other.

  According to a ninth aspect of the present invention, in the clamp fixing structure according to any one of the first to eighth aspects, the clamp (1) is a side wall surface of the pair of projecting portions (3) in the fixing stage. It has a feature that it has a slip prevention guide (13) that comes into contact with (3c) and prevents the pair of protrusions (3) from slipping out of the holding portion.

  According to this, even if a force is applied to the clamp (1) in a direction perpendicular to the side wall surfaces (3c) of the pair of protrusions (3), the clamp (1) is removed from the pair of protrusions (3). There can be no structure.

  By the way, since a pair of protrusion part (3) is formed so that it can incline in the direction which approaches mutually, or moves away from each other, in the fixed state where a pair of protrusion part (3) was clamped by the holding part, clamp (1 ) When an external force is applied from a direction parallel to the flat surface portion (20), the external force acts on the pair of projecting portions (3) from the clamp (1), and the pair of projecting portions (3) are sandwiched between them. There is a possibility of leaving.

  Therefore, in the invention according to claim 10, in the invention according to any one of claims 1 to 8, any one of the flat surface portion (20) and the clamp (1) is provided with respect to the flat surface portion (20). One or more drop prevention protrusions 23 (23) protruding in the vertical direction are formed, and on the other side, one or more protrusions (3) and the clamp (1) are fixed in a fixed state. A slip-out preventing portion that is fitted to the slip-out preventing projection 23 (23) is formed, and the slip-off preventing portion is externally applied to the clamp (1) from any direction parallel to the plane portion (20) in the fixed state. When the is applied, the external force applied to the clamp (1) is provided so as to act on the one or more protrusions 23 for preventing slipping.

  As described above, in the fixed state, when an external force is applied to the clamp (1) from any direction parallel to the plane portion (20), the external force acting on the pair of protrusions (3) from the clamp (1). Can be made to act on the protrusion 23 (23) for preventing slipping through the slipping preventing part. Thereby, the fixing structure between the clamp (1) and the pair of projecting portions (3) can be made stronger, that is, the pair of projecting portions (3) can be made difficult to be removed from the holding portion. .

  Furthermore, since the external force which acts on a pair of protrusion part (3) can be reduced, even if it is a case where a strong external force is applied to the clamp 1, damage to a pair of protrusion part (3) etc. can be prevented. Similarly to the pair of protrusions (3), the protrusions 23 (23) for preventing slipping have a shape that protrudes in the vertical direction with respect to the flat surface part (20), and the stoppers for protrusion also protrude in the vertical direction. Since it has a shape that fits with the protrusion 23 for preventing slippage, it can be formed by a molding process only in one axial direction.

  According to an eleventh aspect of the present invention, in the invention according to the tenth aspect, the clamp (1) has a quadrangular outer shape when viewed from the direction perpendicular to the flat surface portion (20), and is prevented from coming off. The part is a notch part (113) formed at a position corresponding to the four corners of the quadrangle of the clamp (1), and the protrusion for preventing removal 23 (23) is in a fixed state with the notch part (113). It is characterized by fitting.

  According to this, the external force applied to the clamp (1) from a direction parallel to the flat surface portion (20) can be prevented from coming off through the notches formed at the four corners of the clamp (1). (23).

  Further, in the invention according to claim 12, in the invention according to claim 10, the drop prevention part is a hole corresponding to the outer shape of the drop prevention protrusion 23 (23), and the drop prevention protrusion. 23 (23) is characterized in that it fits into the hole in the fixed state.

  According to this, an external force applied to the clamp (1) from a direction parallel to the flat surface portion (20) is applied to the protrusion 23 (23) for preventing slipping through the hole serving as a slip preventing portion. Can act.

  According to a thirteenth aspect of the present invention, in the invention according to any one of the tenth to twelfth aspects, the drop prevention portion (113) and at least one or more drop prevention protrusions 23 (23) are cut off. The fitting dimension when the notch part and the protrusion part 23 (23) for preventing slipping are fitted is set so as to be a fitting that can be tightened.

  According to this, since the frictional force between the protrusions 23 (23) for preventing slipping and the stoppers for slipping is increased, it is possible to cope with external force from the direction perpendicular to the flat surface part (20), and clamp ( Since the backlash between 1) and a pair of protrusion part (3) can be suppressed, the fixing structure of a clamp (1) and a pair of protrusion part (3) can be made stronger.

  In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the specific means as described in embodiment mentioned later.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an exploded perspective view of a fixing structure of the clamp 1 in the present embodiment, and FIG. 2 is a cross-sectional view taken along the line AA of the unit case 2 in FIG. FIG. 3 is a cross-sectional view taken along the line BB of the clamp 1 in FIG. 1 (a cross-section parallel to the Y-axis direction at the center of the Z-axis direction of the clamp 1 is X). It is sectional drawing seen from the axial direction). For convenience of explanation, a wire harness 4 described later is omitted in drawings other than FIG.

  As shown in FIG. 1, the clamp 1 fixing structure of the present embodiment includes a pair of flat ribs 3 formed integrally with a unit case (molded member) 2 which is a synthetic resin molded product of an air conditioning unit, and a wire harness. The unit case 2 and the clamp 1 are fixed by fixing the clamp 1 which is a molded product made of a synthetic resin formed so as to be able to hold 4.

  First, the unit case 2 of the present embodiment will be described with reference to FIGS. 1 and 2. The unit case 2 is formed by molding (die cutting) only in one axis direction (the Y-axis vertical direction in the figure). .

  A pair of flat ribs (a pair of projecting portions) 3 are formed on the planar portion 20 of the unit case 2 so as to face each other in parallel and project from the planar portion 20. The pair of flat ribs 3 are integrally formed at the time of forming the unit case 2 and are formed to have the same thickness width with respect to the die cutting direction (Y-axis upward direction).

  The pair of flat ribs 3 includes an inner wall surface 3a that is a plate surface facing each other, an outer wall surface 3b that is a back surface side of the inner wall surface 3a, and a side wall surface 3c that connects the inner wall surface 3a and the outer wall surface 3b and intersects the flat surface portion 20. have.

  Here, the pair of flat plate ribs 3 gradually increases in the plate surface width in the plate surface direction (Z-axis direction) between the tip portion 31 (free end portion side) and the lower end portion 32 (fixed end portion side). The width of the plate surface of the lower end portion 32 is formed so as to be larger than that of the tip portion 31.

  On the side wall surface 3c1 of the tip end portion 31 of the flat plate rib 3 on the side wall surface 3c of the flat plate rib 3, the chamfered portion 3c3, the tip end portion 31, and the lower end portion are in contact with a pair of outer wall support pieces 11 of the clamp 1 described later. An inclined surface 3 c 4 is formed between the first and second surfaces. That is, the side wall surface 3 c of the flat plate rib 3 includes a side wall surface 3 c 1 of the front end portion 31 of the flat plate rib 3, a side wall surface 3 c 2 of the lower end portion 31 of the flat plate rib 3, a chamfered portion 3 c 3, and an inclined surface 3 c 4.

  In the vicinity of the fixed end portion of the lower end portion 32 of the pair of flat ribs 3 in the flat portion 20 of the unit case 2, concave thin portions 21 and 22 are formed on the front and back surfaces of the flat portion 20, respectively. When the external force is applied so as to approach the pair of flat ribs 3 by forming the thin portions 21 and 22 in the vicinity of the fixed end portions of the pair of flat ribs 3 of the plane portion 20, the external force generates the pair of flat ribs 3. The stress to be concentrated is concentrated on the thin-walled portions 21 and 22, and the thin-walled portions 21 and 22 are plastically deformed so that the pair of flat plate ribs 3 are inclined in a direction approaching each other.

  The thin-walled portions 21 and 22 are also integrally formed during the molding of the unit case 2 in the same manner as the flat-plate rib 3, and the concave-surface thin-walled portion 21 is formed on the surface of the flat portion 20 on the side facing the pair of flat-plate ribs 3. It is formed by die cutting in the axial direction, and a concave back thin portion 22 is formed by die cutting in the Y-axis downward direction on the reverse side (side where the pair of flat plate ribs 3 do not face).

  Thus, the unit case 2 including the pair of flat plate ribs 3 of the present embodiment can be integrally formed by a molding process only in the uniaxial direction (Y-axis direction). In other words, the unit case 2 including the pair of flat ribs 3 is formed such that there is no portion that cannot be seen by overlapping when viewed from the Y-axis direction.

  Next, the clamp 1 according to the present embodiment will be described with reference to FIGS. 1 and 3. The clamp 1 has a rectangular base end portion 10 for fixing a holding member 4 a that holds the wire harness 4. The base end portion 10 is formed with a pair of plate-like outer wall support pieces 11 extending opposite to each other at opposite edges of the base end portion 10 so as to expand obliquely outward.

  Further, the base end portion 10 is formed with a pair of inner wall support pieces 12 extending from the center position of other opposing edge portions of the base end portion 10 to the same side as the outer wall support piece 11. Here, the opposing direction (X-axis direction) of the pair of outer wall support pieces 11 and the opposing direction (Z-axis direction) of the pair of inner wall support pieces 12 are formed to be orthogonal to each other.

  Here, the clamp of this embodiment is formed by die cutting in the biaxial directions of the Y-axis direction and the Z-axis direction, and the proximal end portion 10 has a distal end support portion 121 of a pair of inner wall support pieces 12 to be described later. A die-cutting hole 10a that is necessary for molding is formed.

  The pair of outer wall support pieces 11 support the outer wall surfaces 3b of the pair of flat plate ribs 3 with the inner wall surfaces 11a facing each other when the clamp 1 and the pair of flat plate ribs 3 are fixed (fixing stage). The outer wall support part is configured. The inner wall surfaces 11a of the pair of outer wall support pieces 11 are formed in a shape that expands from the base end portion 10 into a square shape so as to coincide with the outer wall surfaces 3b of the pair of flat plate ribs 3 that are inclined toward each other. Has been.

  Further, the pair of outer wall support pieces 11 are formed such that the distance between the tip portions (opposite the base end portion 10) is larger than the distance between the pair of flat plate ribs 3. This is to cause the pair of flat ribs 3 to incline toward each other when the inner walls 11a of the pair of outer wall support pieces 11 and the pair of flat ribs 3 are brought into contact with each other (contact stage).

  The plate thickness surface 11b on the front end side of the outer wall support piece 11 is connected to the plate thickness surfaces 11b of the opposed outer wall support pieces 11 and brought into contact with the plate rib 3 in the plate surface direction (Z-axis direction). ) Are respectively formed with prevention guides 13 in the Z-axis direction that prevent the clamp 1 from being removed.

  When the clamp 1 and the pair of flat ribs 3 are fixed, the pair of inner wall support pieces 12 support the inner wall surfaces 3a of the pair of flat ribs 3 by side wall surfaces 121a of the tip support portions 121 described later in the inner wall support piece 12. The inner wall supporting part is configured.

  The pair of inner wall support pieces 12 are formed with column portions 120 extending vertically from the base end portion 10 to the distal end side (the end portion opposite to the base end portion 10). A tip support portion 121 is formed on the inner wall surface 11a side of the support piece 11 and extending in parallel with the X-axis direction. The shape of the inner wall support piece 12 viewed from the Z-axis direction is an inverted T-shape.

  A side wall surface 121 a facing the inner wall surface 11 a of the outer wall support piece 11 is formed at the tip end portion of the tip support portion 121 in the X-axis direction. The side wall surface 121 a is formed so as to be inclined in parallel with the inner wall surface 11 a of the outer wall support piece 11 with an interval corresponding to the plate thickness of the flat rib 3 with respect to the inner wall surface 11 a of the outer wall support piece 11. Here, the distance between the side wall surface 121a of the tip support portion 121 and the inner wall surface 11a of the outer wall support piece 11 is not completely the same as the plate thickness of the flat plate rib 3, and is usually allowed in design. The error is included.

  In addition, the pair of tip support portions 121 are formed with convex portions 121b that protrude toward opposite sides. The convex portions 121b of the pair of tip support portions 121 are formed in a curved shape (or may be inclined surfaces), and the portions of the tip support portion 121 that face each other at the contact stage between the clamp 1 and the pair of flat ribs 3 are formed. Is formed in order to smoothly contact with the chamfered portion 3c3 and the inclined surface 3c4 of the side wall surface 3c of the pair of flat plate ribs 3 and to elastically deform away from each other.

  Here, the opposing interval between the convex portions 121b of the opposing tip support portion 121 is formed to be shorter than the plate surface lateral width (width in the Z-axis direction) of the tip portion 3a of the flat plate rib 3, and the tip support The interval between the tip portions in the X-axis direction of the portion 121 is formed to be longer than the interval between the tip portions 3 a of the pair of flat plate ribs 3.

  The pair of inner wall support pieces 12 are formed so that the convex portions 121b of the pair of tip support portions 121 are elastically deformed in a direction away from each other by contacting the chamfered portions 3c3 of the tip portions 31 of the pair of flat plate ribs 3. A pair of elastic support pieces is formed.

  A sandwiching portion capable of sandwiching a pair of flat ribs 3 inclined in a direction approaching each other by the inner wall surface 11a of the pair of outer wall support pieces 11 and the side wall surface 121a of the tip support portion 121 of the pair of inner wall support pieces 12. Is formed. Since the inner wall surface 11a of the outer wall support piece 11 and the side wall surface 121a of the tip support portion 121 of the inner wall support piece 12 are inclined in parallel with each other with an interval corresponding to the plate thickness of the flat rib 3, the holding portion is also based on It is formed to be inclined with respect to the end portion 10.

  Next, a fixing method for fixing the clamp 1 having the above-described configuration and the pair of flat ribs 3 will be described with reference to FIGS. 4 is a cross-sectional view of the clamp fixing structure at the first contact stage in which the clamp 1 and the flat rib 3 are brought into contact with each other. FIG. 5A is a cross-sectional view of the clamp at the second contact stage. A sectional view, FIG. 5B is a BB sectional view in the second contact stage, FIG. 6A is a perspective view in the fixing stage, and FIG. 6B is an AA section of the clamp 1 in the fixing stage. FIG. 6 (c) shows a cross-sectional view of the clamp 1 taken along the line BB in the fixing stage. 1 is a cross-sectional view of the clamp fixing structure shown in FIG. 1 as viewed from the Z-axis direction, and is a cross-sectional view of the cross-section parallel to the Y-axis direction. FIG. 6 is a cross-sectional view of a cross-section parallel to the Y-axis direction at the center of the Z-axis direction of the clamp fixing structure in FIG.

  First, in the first contact stage in which the clamp 1 is moved in the direction approaching from the vertical direction to the flat surface portion 20 (the Y-axis downward direction) to contact the clamp 1 and the pair of flat plate ribs 3, FIG. As shown, the outer wall surfaces 3 b of the tip portions 31 of the pair of flat plate ribs 3 are in contact with the inner wall surfaces 11 a of the outer wall support pieces 11. A force acts on the flat rib 3 in a direction approaching each other by contact with the inner wall surface 11a of the outer wall support piece 11, and the pair of flat ribs 3 are inclined in a direction approaching each other.

  Here, the front and back thin portions 21 and 22 formed in the vicinity of the fixed end of the flat rib 3 of the unit case 2 are plastically deformed so that the flat rib 3 is inclined in a direction approaching each other around the fixed end. To do.

  In the second contact stage in which the clamp 1 is further moved in the direction closer to the flat surface portion 20 through the first contact stage, as shown in FIG. By contact with the wall surface 11a, they are further inclined toward each other.

  Further, in the second contact stage, as shown in FIG. 6B, the chamfered portion 3 c 3 in which the convex portion 121 b of the tip support portion 121 of the inner wall support piece 12 is formed on the side wall surfaces 3 c of the pair of flat plate ribs 3 and In contact with the inclined surface 3c4, the pair of inner wall support portions 12 are elastically deformed in a direction away from each other. Here, the direction of the force acting by the contact between the inner wall support piece 12 and the flat plate rib 3 in the second contact stage acts in the Z-axis direction.

  Next, in the fixing stage for fixing the pair of flat ribs 3 and the clamp 1, as shown in FIG. 7, the flat rib 3 is clamped by the outer wall support piece 11 and the inner wall support piece 12 at the holding portion. Fixed to.

  Explaining this fixing step, the flat rib 3 is inclined in the direction in which the flat ribs 3 come close to each other due to contact with the inner wall surface 11a of the outer wall support piece 11 so that the inner wall surface 11a of the outer wall support piece 11 and the tip support portion of the inner wall support piece 12 The inclination is the same as the inclination of the side wall surface 121a of 121 (inclination of the holding portion).

  Here, since the inner wall surface 11 a of the outer wall support piece 11 and the side wall surface 121 a of the tip support portion 121 are spaced apart by the plate thickness of the flat plate rib 3, the side wall surface 121 a of the front end support portion 121 and the flat plate rib 3 are separated. The contact with the side wall surface 3c is released, and the state before elastic deformation is restored. That is, the inner wall support piece 12 is restored to the state before elastic deformation because the force due to the contact between the side wall surface 121a of the tip support portion 121 and the side wall surface 3c of the flat plate rib 3 does not act.

  When the inner wall support piece 12 is restored to the state before elastic deformation, the side wall surface of the tip support portion 121 of the inner wall support piece 12 in a state where the outer wall surface 3b of the flat plate rib 3 is in surface contact with the inner wall surface 11a of the outer wall support piece 11. 121 a is in surface contact with the inner wall surface 3 a of the flat plate rib 3.

  Therefore, the pair of flat plate ribs 3 and the clamp 1 are narrow at a holding portion in which the pair of flat plate ribs 3 are constituted by the inner wall surface 11 a of the outer wall support piece 11 and the side wall surface 121 a of the tip support portion 121 of the inner wall support piece 12. It is held and fixed.

  In this fixed state, even if a force is applied in the direction in which the clamp 1 is pulled out (upward in the Y axis), force is applied to the inner wall surface 11a of the outer wall support piece 11 in the direction opposite to the direction in which the clamp 1 is pulled out (down in the Y axis). Therefore, the clamp 1 can be structured not to come off from the pair of flat plate ribs 3.

  As described above, in the present embodiment, the structure for fixing the clamp 1 made of synthetic resin and the pair of flat ribs 3 made of synthetic resin is used, so that the clamp fixing structure is a separate metal member. It is possible to obtain a low-cost and highly safe structure that does not allow the clamp 1 to bite into the pair of flat plate ribs 3.

  In addition, since the unit case 2 in which the pair of flat plate ribs 3 are integrally formed can be formed by die-cutting only in the uniaxial direction, it is possible to suppress an increase in man-hours for forming the unit case 2.

  Further, in the fixing stage between the pair of flat ribs 3 and the clamp 1, the clamp 1 is not pulled out of the pair of flat ribs 3 even if the clamp 1 is pulled in the Z direction by the Z-axis drop prevention guide 13. be able to.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. A description of the same parts as those in the first embodiment will be omitted. 7A is an exploded perspective view of the clamp fixing structure of the present embodiment, FIG. 7B is a front view of the clamp, and FIG. 7C is a perspective view of the clamp fixing stage. .

  In the first embodiment, each support column 120 in the pair of inner wall support pieces 12 is formed so as to extend from the center position of the edge of the base end portion 10 to the same side as the outer wall support piece 11. In the present embodiment, as shown in FIG. 7, each column portion 120 in the pair of inner wall support pieces 12 is arranged on the outer wall support piece from the inner wall portion 11 a side of the outer wall support piece 11 with respect to the center position of the edge portion of the base end portion 10. 11 is formed so as to extend on the same side as 11. In other words, the axes of the respective support columns 120 are formed so as to be shifted in the X-axis direction so as not to overlap when viewed from the Z-axis direction.

  Thus, when the clamp 1 is formed, it can be formed by die cutting in the biaxial direction of the Y-axis lower direction and the Z-axis direction, so that it is not necessary to form the die-cutting hole 10a in the base end portion 10. . As a result, the physique in the Z-axis direction of the clamp 1 can be made smaller than the clamp 1 of the first embodiment.

  Further, in the first embodiment, the escape prevention guide 13 is formed at the distal end portion of the outer wall support piece 11, but in this embodiment, the proximal end of the outer wall support piece 11 closer to the column portion 120 and the column portion 120. The disconnection prevention guide 13 is formed by connecting the portions 10 side.

  As a result, the length of the prevention guide 13 in the X-axis direction can be shortened compared to that of the first embodiment, so that the clamp 1 of this embodiment is compared with the clamp 1 of the first embodiment. Thus, the amount of resin material used can be reduced.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. Description of the same parts as those in the second embodiment is omitted. FIG. 8 shows a front view of the clamp.

  In the present embodiment, the pair of inner wall support pieces 12 are formed in an L shape when viewed from the Z-axis direction. Specifically, the axis of each column 120 in the pair of inner wall support pieces 12 is formed by shifting in the X-axis direction, and the tip support 121 extends only to the outer wall support piece 11 side close to the column 120. Forming. That is, the support shaft 120 and the tip support portion 121 are formed so as not to overlap when viewed from the Z-axis direction.

  According to this, when the clamp 1 is formed, the clamp 1 can be formed by die cutting only in the Z-axis direction. Moreover, the clamp of this embodiment can reduce the usage-amount of the resin material compared with the clamp of 1st, 2nd embodiment.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIG. Description of the same parts as those in the third embodiment is omitted. FIG. 9 shows an exploded perspective view of the clamp fixing structure of the present embodiment.

  In the present embodiment, in the contact stage, the pair of flat ribs 3 are directly picked by a finger or the like and tilted by applying a force in a direction approaching each other (first contact stage). (The second contact stage).

  Therefore, the outer wall support piece 11 of the clamp 1 according to the present embodiment has the inner wall surfaces 11a of the pair of outer wall support pieces 11 attached to the distal end portions 3a of the pair of flat ribs 3 in the contact stage (first contact stage) of the clamp 1. There is no need to make contact.

  As a result, the pair of outer wall support pieces 11 leave the inner wall surface 11a that supports the plate rib 3 in the fixing stage of the clamp 1 as shown in FIG. Can be shortened. As a result, the clamp 1 of the present embodiment can reduce the amount of resin material used compared to the clamps of the above embodiments.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIG. Description of the same parts as those in the fourth embodiment is omitted. 10A is an exploded perspective view of the clamp fixing structure of the present embodiment, FIG. 10B is a perspective view of the abutting stage of the clamp fixing structure of the present embodiment, and FIG. 10C is the present embodiment. FIG. 5 shows a perspective view of a fixing stage of a clamp fixing structure of a form.

  In this embodiment, as shown in FIG. 10, the clamp 1 is formed with a thin skin portion 110 on the outer wall support piece 11 for applying a force in a direction in which the pair of flat ribs 3 approach each other with fingers or the like. The thin skin portion 110 is formed so as to extend obliquely outward from the base end portion 10, and is formed so as to be elastically deformable in a direction toward and away from each other.

  According to this, in the contact stage, the thin portion is picked with a finger or the like to incline the flat ribs 3 toward each other (see FIG. 10B), and the clamp 1 and the pair of flat ribs 3 are brought into contact with each other. It is not necessary to incline the flat rib 3 with a finger or the like as in the fourth embodiment, and the number of man-hours can be reduced.

  In this embodiment, the punching hole 10a is formed in the proximal end portion 10 of the clamp 1, but may be omitted as in the second and third embodiments.

(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described with reference to FIGS. A description of the same parts as those in the first embodiment will be omitted. Here, FIG. 11 is an exploded perspective view of the clamp fixing structure of the present embodiment, and FIG. 12 is a cross-sectional view of the plate rib 3 in FIG. FIG. 13A is a front view of the clamp 1, and FIG. 13B is a side view of the clamp 1.

  First, the pair of flat ribs 3 according to the present embodiment will be described with reference to FIGS. 11 and 12. The distal end portion 31 of the flat rib 3 has the same thickness width with respect to the die cutting direction (the Y-axis upward direction). Thus, it is formed in a flat plate shape. The lower end portion 32 of the flat rib 3 is inclined so that the mutually opposing surfaces (inner wall surface 3a) approach toward the fixed end portion, and the back surface (outer wall surface 3b) is perpendicular to the unit case 2. Yes. Further, the plate surface lateral width (width in the Z-axis direction) of the front end portion 31 of the flat rib 3 is formed to be smaller than the plate surface lateral width of the lower end portion 32.

  Here, as shown in FIG. 2, a recess 220 is formed on the back surface of the unit case 2 where the flat rib 3 is formed so that the inside of the flat rib 3 is hollow. The recess 220 is formed at the time of die-cutting in the downward direction of the Y axis. Note that the unit case 2 including the recess 220 is formed so that there is no portion that cannot be seen by overlapping when viewed from the Y-axis direction.

  The thin portion 30 is formed in the flat plate rib 3 by the concave portion 220. Specifically, the thin portion 30 is formed such that the fixed end portion of the lower end portion 32 of the flat plate rib 3 is thin (lower thin portion 32a), and the boundary between the lower end portion 32 and the front end portion 31 of the flat plate rib 3 is formed. It is formed to be thin (upper thin portion 31a).

  The pair of flat ribs 3 according to the present embodiment forms the lower thin portion 32a at the fixed end portion of the lower end portion 32, and when an external force is applied to the lower end portion 32 in a direction away from each other, the lower end portion 32 is caused by the external force. The generated stress concentrates on the lower thin portion 32a, and the lower end portion 32 is plastically deformed in a direction away from each other.

  Further, the pair of flat ribs 3 is formed at the tip 31 by external force when an external force is applied in a direction approaching the tip 3b by forming the upper thin portion 31a at the boundary between the tip 31 and the lower end 32. The stress to be concentrated concentrates on the upper thin portion 31a, and the tip portions 31 are plastically deformed in a direction approaching each other.

  That is, the pair of flat ribs 3 according to the present embodiment is bent in a dogleg shape by applying an external force to the lower end portion 32 in a direction away from each other and applying an external force in a direction approaching the tip portion 31. Is formed.

  Next, the clamp 1 of the present embodiment will be described with reference to FIGS. 11 and 13. The clamp is in addition to the base end portion 10, the pair of outer wall support pieces 11, and the pair of inner wall support pieces 12, and the contact portion 14. It is comprised.

  The pair of outer wall support pieces 11 are formed with support portions 111 projecting from the inner wall surface 11a on the base end portion 10 side (fixed end portion side). The wall surface 3b is supported.

  The pair of inner wall support pieces 12 are formed so as to expand and extend from the base end portion 10 to the outer wall support piece 11 side. Further, at the tip of the pair of inner wall support pieces 12, a support portion 122 that protrudes toward the outer wall support piece 11 is formed at a portion facing the inner wall surface 11 a of the outer wall support piece 11. Convex portions 121b projecting to the opposite side are formed. The support portion 122 formed at the tip of the pair of inner wall support pieces 12 supports the inner wall surfaces 3 a of the pair of flat plate ribs 3 in the fixing stage of the clamp 1.

  Here, the pair of inner wall support pieces 12 are connected by a single support base 123 from the base end 10 side to the vicinity of the center in the Y-axis direction. The plate surface lateral width (width in the X-axis direction) on the distal end side of the inner wall support piece 12 is formed so as to be longer than the arrangement interval between the distal end portions 31 of the pair of flat ribs 3, and the distal end of the support base portion 123. The horizontal width of the plate surface is shorter than the arrangement interval between the front end portions 31 of the pair of flat plate ribs 3 and longer than the arrangement interval between the lower end portions 32.

  In the present embodiment, a pair of flat ribs in a state of being inclined toward each other by the support portion 111 formed on the inner wall surface 11 a of the pair of outer wall support pieces 11 and the support portion 122 at the tip of the pair of inner wall support pieces 12. A holding portion capable of holding 3 is formed.

  The contact portion 14 contacts the inner wall surface 3a of the lower end portion 32 of the pair of flat ribs 3 in the contact step (first and second contact steps) and moves away from the lower end portions 32 of the pair of flat plate ribs 3. Force is applied in the direction, and is formed so as to expand from the center position of the support base 123 of the inner wall support piece 12 to the outer wall support piece 11 side and to extend downward in the Y-axis in the same manner as the inner wall support piece 12. ing.

  Here, the plate surface lateral width (width in the X-axis direction) at the tip of the contact portion 14 is formed to be shorter than the arrangement width at the tip portion 31 of the pair of flat plate ribs 3, and the plate surface of the contact portion 14. The vertical width (the width in the Y-axis direction) is formed so as to be longer than the vertical width of the plate surface of the inner wall support piece 12.

  Next, a fixing method for fixing the clamp 1 and the plate rib 3 having the above configuration will be described with reference to FIG. 14A is a front view of the clamp fixing structure in the first contact stage, FIG. 14B is a front view of the clamp fixing structure in the second contact stage, and FIG. 14C is a clamp in the fixing stage. The front view of the fixed structure of is shown.

  First, in the first abutting stage, as shown in FIG. 14A, the side wall surfaces 3c of the pair of flat ribs 3 abut against the convex portions 121b at the tips of the pair of inner wall support pieces 12, and the pair of inner wall support pieces. 12 is elastically deformed in a direction away from each other (perpendicular to the paper surface).

  In the second contact stage, as shown in FIG. 14 (b), the inner wall surfaces 3 a of the lower end portions 32 of the pair of flat plate ribs 3 are in contact with the contact portions 14, respectively. A force is applied to the lower end portion 32 of the rib 3 in a direction away from each other, and the lower end portion 32 of the flat plate rib 3 is inclined in a direction away from each other.

  At the same time, the outer wall surfaces of the distal end portions 31 of the pair of flat plate ribs 3 abut against the inner wall surface 11a of the outer wall support piece 11, and the abutment with the inner wall surface 11a of the outer wall support piece 11 is brought into contact with the distal end portion 31 of the flat plate rib 3. A force is applied in a direction approaching each other, and the tip portions 31 of the flat plate ribs 3 are inclined in a direction approaching each other. That is, the pair of flat ribs 3 bends in a dogleg shape.

  Next, in the fixing stage, as shown in FIG. 14 (c), the flat rib 3 includes a support portion 111 provided on the inner wall surface 11 a of the outer wall support piece 11 and a support portion provided at the tip of the inner wall support piece 12. The clamp 1 and the flat plate rib 3 are in a fixed state.

  In the first to fifth embodiments, in the second contact stage, the side wall surfaces 3c of the flat ribs 3 that are inclined toward each other and the convex portions 121b of the pair of inner wall support pieces 12 are reliably brought into contact with each other. Therefore, high accuracy is required for the dimensions during clamp molding.

  As in the present embodiment, the width of the plate surface at the tip of the inner wall support piece 12 is longer than the arrangement width of the flat plate ribs 3, and the state (plane) before bending into a dogleg shape in the first contact stage. The side wall surface 3c of the flat plate rib 3 in a state of projecting in the vertical direction with respect to the portion 20 and the convex portions 121b of the pair of inner wall support pieces 12 are securely brought into contact with each other so that the inner wall support pieces 12 move away from each other. It can be elastically deformed.

(Seventh embodiment)
Next, a seventh embodiment of the present invention will be described with reference to FIGS. Description of the same parts as those in the second embodiment is omitted. Here, FIG. 15 is an exploded perspective view of the clamp fixing structure of this embodiment, and FIG. 16 is a front view of the clamp fixing structure in the clamp fixing stage.

  In the present embodiment, as shown in FIG. 15, the pair of flat ribs 3 are formed with thin portions 21 and 22 on the flat portion 20 of the unit case 2 so as to be plastically deformed so as to move away from each other. Specifically, the back thin portion 22 is formed by die-cutting in the Y-axis downward direction on the side where the pair of flat ribs 3 face each other, and the thin surface portion on the opposite side (the side where the pair of flat plate ribs do not face). 21 is formed by die cutting in the Y-axis upward direction.

  Moreover, the clamp 1 of this embodiment protrudes from the center position of the base end part 10, and the mountain-shaped inner wall support part 12 in which the two inclined surfaces 124 which incline toward the diagonally inner direction were formed, the base end part 10 of It is composed of four support pieces 112a and 112b formed so as to extend from each corner to the same side as the inner wall support 12.

  The inner wall support portion 12 abuts the inner wall surface 3a of the flat plate rib 3 at the two inclined portions 124 at the contact stage in which the clamp 1 and the flat plate rib 3 are brought into contact with each other, thereby fixing the clamp 1 and the flat plate rib 3. In the fixing stage, the inclined portion 124 supports the inner wall surface 3a of the flat plate rib 3 in surface contact.

  The four support pieces 112a and 112b have one pair of support pieces 11 facing each other with the inner wall support portion 12 interposed therebetween as a first outer wall support piece 112a, and the other pair of support pieces 11 as a second outer wall support piece 112b. The first and second outer wall support pieces 112 a and 112 b are configured as a pair of outer wall support pieces 11.

  Each of the four support pieces 112a and 112b has a column portion 113 that extends on the same side as the inner wall support portion 12, and an L-shaped tip support that extends toward the inclined portion 124 side of the inner wall support portion 12 at the tip of the column portion 113, respectively. A portion 114 is formed.

  In the tip support portion 114, the side wall surface 114 a facing the inner wall support portion 12 is inclined in parallel with the inclined surface 124 of the inner wall support portion 12 with an interval corresponding to the plate thickness of the flat rib 3. Further, the tip support portions 114 in the tip support portion 114 that are directly opposed to each other (tip support portions that are not opposed to each other with the inner wall support portion 12 interposed therebetween) are formed with convex portions 114b that protrude to the sides facing each other.

  The first and second outer wall support pieces 112a and 112b are formed so as to be elastically deformed in a direction away from each other when the convex portions 114b of the respective tip support portions 114 abut against the side wall surfaces 3c of the pair of flat plate ribs 3. And constitutes a pair of elastic support pieces.

  The inclined surface 124 of the inner wall support portion 12 and the side wall surfaces 114a of the tip support portions 114 of the first and second outer wall support pieces 112a and 112b can sandwich a pair of flat ribs 3 that are inclined in directions away from each other. A sandwiching portion is formed.

  Next, a fixing method for fixing the clamp 1 having the above-described configuration and the flat rib 3 will be described. In the first contact stage, the inner wall surfaces 3a of the pair of flat ribs 3 are in contact with the inclined surfaces 124 of the inner wall support portion 12. Thus, the pair of flat plate ribs 3 are inclined away from each other.

  In the second contact stage, the side wall surfaces 3c of the pair of flat ribs 3 are in contact with the convex portions 114b of the tip support portions 114 of the first and second outer wall support pieces 112a and 112b and are opposed to each other. The support pieces 112a and 112b are elastically deformed in a direction away from each other (Z-axis direction).

  In the fixing stage, as shown in FIG. 16, the flat rib 3 is constituted by the inclined portion 124 of the inner wall support portion 12 and the side wall surface 114a of the tip support portion 114 of the first and second outer wall support pieces 112a and 112b. The pair of flat ribs 3 and the clamp 1 are fixed by being held by the holding portion.

  In this way, even if the pair of flat ribs 3 are formed so as to be able to incline in directions away from each other, it is possible to realize a clamp fixing structure that provides the same operational effects as the first embodiment.

(Eighth embodiment)
Next, an eighth embodiment of the present invention will be described with reference to FIGS. Description of the same parts as those in the second embodiment is omitted. Here, FIG. 17A is an exploded perspective view of the clamp fixing structure of the present embodiment, FIG. 17B is a side view of the unit case in FIG. 17A, and FIG. 18A is a clamp in the fixing stage. 18B is a cross-sectional view of the clamp fixing structure taken along the line C-C in the fixing stage (a cross section parallel to the Y-axis direction at the center of the clamp fixing structure in the X-axis direction is viewed from the Z-axis direction). Cross-sectional view).

  In the present embodiment, as shown in FIG. 17, four columnar ribs 3, 30 a, 30 b are integrally formed on the flat portion 20 of the unit case 2. Here, in this embodiment, two columnar ribs adjacent to one of the four columnar ribs 3, 30a, 30b are paired to form a first pair of ribs 30a (a pair of protruding pieces) and the other two columnar ribs. The pair of ribs 30b is a second pair of ribs 30b (a pair of protruding pieces). The first pair of ribs 30a and the second pair of ribs 30b constitute a pair of protrusions 3.

  Two adjacent columnar ribs in the first and second pair of ribs 30a and 30b are located on the opposite sides between the tip portion 31 (free end portion side) and the lower end portion 32 (fixed end portion side). It is formed so as to gradually approach, and is formed such that the thickness in the facing direction (Z-axis direction) of the lower end portion 32 is larger than that of the tip portion 31.

  The unit case 2 has concave thin portions 21 and 22 formed in the vicinity of the respective fixed end portions so that the first and second pair of ribs 30a and 30b can be inclined in a direction approaching each other.

  In the present embodiment, the first and second pair of ribs 30a and 30b are adjacent to each other, the inner wall surface 3a facing each other and the outer wall surface 3b opposite to the inner wall surface 3a. It has the side wall surface 3c which the two columnar ribs which oppose.

  On the other hand, the clamp 1 is formed so that the pair of inner wall support pieces 12 can be elastically deformed in a direction approaching each other, and protrudes from the tip support portions 121 of the pair of inner wall support pieces 12 to the sides (outside directions) that do not face each other. Convex part 121b is formed.

  Further, a removal prevention guide 13 for preventing the clamp 1 from coming off in the Z-axis direction is formed at the center position in the Z-axis direction of the inner wall surface 11a of the outer wall support piece 11.

  In the present embodiment, the first and second pair of ribs in a state of being inclined toward each other by the inner wall surface 11 a of the pair of outer wall support pieces 11 and the side wall surface 121 a of the tip support portion 121 of the pair of inner wall support pieces 12. A holding portion capable of holding 30a and 30b is formed.

  Next, a fixing method for fixing the clamp 1 having the above-described configuration and the first and second pair of ribs 30a and 30b will be described. In the first contact stage, the outer sides of the first and second pair of ribs 30a and 30b are described. The wall surface 3b abuts against the inner wall surface 11a of the pair of outer wall support pieces 11, and the first pair of ribs 30a and the second pair of ribs 30b are inclined in a direction approaching each other.

  In the second contact stage, the opposite side wall portions 3c of the two adjacent columnar ribs in the first and second pair of ribs 30a, 30b are in contact with the convex portion 121b of the tip support portion 121 of the pair of inner wall support pieces 12. In contact with each other, the pair of inner wall support pieces 12 are elastically deformed in a direction (Z-axis direction) approaching each other.

  In the fixing stage, as shown in FIG. 18, the first and second pair of ribs 30 a and 30 b are formed by the side wall surface 121 a of the tip support portion 121 of the pair of inner wall support pieces 12 and the inner wall surface of the pair of outer wall support pieces 11. The clamp 1 and the first and second pair of ribs 30a and 30b are fixed by being pinched by the pinching portion constituted by 11a.

  Thus, when it is set as the structure which elastically deforms a pair of inner wall support piece 12 in the direction which mutually approaches in a contact stage (1st, 2nd contact stage) of a clamp, a pair of inner wall support piece 12 of clamp 1 Since it does not protrude outside in the Z-axis direction, it suppresses interference with other members arranged in the Z-axis direction at the contact stage between the clamp 1 and the first and second pair of ribs 30a, 30b. Can do.

(Ninth embodiment)
Next, a ninth embodiment of the present invention will be described with reference to FIGS. A description of the same parts as those in the first embodiment will be omitted. 19 is an exploded perspective view of the clamp fixing structure according to the present embodiment, and FIG. 20 is a sectional view taken along the line DD in FIG. FIG. 21 is a perspective view of a fixing stage of the clamp fixing structure according to the present embodiment.

  In the first embodiment, in order to prevent the clamp 1 from coming off in the plate surface direction (Z-axis direction) of the flat plate rib 3 in a fixed state in which the pair of flat plate ribs 3 are held by the holding portions, the outer wall support piece A slip prevention guide 13 is formed at the tip of the head 11.

  However, the pair of flat ribs 3 are formed so as to be able to incline in directions toward or away from each other. Therefore, when an external force is applied in a fixed state from a direction parallel to the plane portion 20 (X and Z axis directions), the external force acts on the pair of flat plate ribs 3 from the clamp 1, so that the pair of flat plate ribs 3 There is a possibility of coming off from the holding part. Therefore, in the present embodiment, when an external force is applied to the clamp 1 in a direction parallel to the plate surface direction of the flat portion 20 (X and Z axis directions), the clamp 1 is prevented from coming off from the pair of plate ribs 3. It has a possible configuration.

  Hereinafter, the structure of the structure for preventing the clamp 1 from coming off will be described with reference to FIGS. As shown in FIGS. 19 and 20, the clamp 1 according to the present embodiment is formed so that the outer shape when viewed from the vertical direction (Y-axis direction) of the plane portion 20 is a square shape. Therefore, the outer wall surface 11 c which is the back surface of the inner wall surface 11 a of the outer wall support piece 11 of the clamp 1 is formed to be a surface perpendicular to the base end portion 10.

  And the notch part 113 which comprises a missing prevention part is formed in the position corresponding to the four corners of the external shape when it sees from the perpendicular direction (Y-axis direction) of the plane part 20 in the clamp 1, respectively. Specifically, in this embodiment, a notch 113 is formed between the outer wall surface 11c and the plate thickness surface 11b of the outer wall support piece 11.

  The notches 113 are formed so as to extend in a direction perpendicular to the plane portion 20. The notch 113 is formed with a first notch surface 113a parallel to the outer wall surface 11c of the outer wall support piece 11 and a second notch surface 113b parallel to the plate thickness surface 11b. .

  On the other hand, the flat portion 20 of the unit case 2 protrudes in the vertical direction (upward direction of the Y axis) of the flat portion 20, and four protrusions for preventing slipping formed in a quadrangular prism shape corresponding to the notch portion 113. 23 is formed. In addition, since the four protrusion prevention parts 23 protrude in the vertical direction of the plane part 20 similarly to the pair of flat plate ribs 3, they can be integrally formed when the unit case 2 is formed.

  Two of these four protrusions 23 for preventing slipping are provided on the outer wall surface 3b side of the pair of flat plate ribs 3, and in a fixed state in which the pair of flat plate ribs 3 and the clamp 1 are fixed, the four cutout preventive portions 23 are cut off. It is formed in a shape that fits into the notch 113.

  Here, in the present embodiment, the protrusions 23 for preventing removal are formed in a rectangular column shape corresponding to the first and second cutout surfaces 113a and 113b of the cutout 113 of the clamp 1, but there are four dropouts. The prevention protrusion 23 may be formed in a columnar shape or the like as long as it has a shape corresponding to the notch 113 of the clamp 1.

  Next, the structure in the fixing stage of the clamp 1 of this embodiment is demonstrated based on FIG. As shown in FIG. 21, in the fixing stage of the clamp 1, the four drop-out preventing protruding portions 23 protruding from the flat portion 20 and the notch portions 113 of the clamp 1 are fitted. In this state, the clamp 1 has a structure in which four corners are surrounded by four drop-out preventing protrusions 23.

  Here, the slip-out preventing protrusion 23 is in contact with the first and second cut-out surfaces 113a and 113b of each cut-out portion 113. Therefore, an external force applied from any direction parallel to the plane portion 20 acts on the slip-out preventing protrusion 23 via the first and second notch surfaces 113a and 113b of each notch 113.

  For example, when an external force is applied to the clamp 1 from the X-axis direction, the external force acts on the square bar 23 via the second groove surface 113b. In addition, when an external force is applied to the clamp 1 from the Z-axis direction, the external force acts on the square bar 23 via the first groove surface 113a.

  As described above, in the fixed state, when an external force is applied to the clamp 1 from any direction parallel to the plane portion 20, the external force acting on the pair of flat ribs 3 from the clamp 1 is applied to each notch 113. It can be made to act on the escape prevention protrusion part 23 via. Thereby, the fixing structure between the clamp 1 and the pair of projecting portions 3 can be made stronger, that is, the pair of projecting portions 3 can hardly be removed from the holding portion.

  Moreover, since the external force which acts on a pair of flat rib 3 can be reduced, even if it is a case where a strong external force is applied to the clamp 1, damage etc. of a pair of flat rib 3 can be prevented. Furthermore, when assembling the clamp 1 to the pair of flat plate ribs 3, the clamp 1 can be guided to a desired position by the removal preventing projection 23, so that the assembling property can be improved.

  Here, the fitting dimension (dimension tolerance) between the notch portion formed in the clamp 1 and the protrusion 23 for preventing slippage is a fitting (tight fit) that can always be tightened when fitted. You may set as follows.

  According to this, the frictional force between the protrusion 23 for preventing slippage and the notch is increased, so that it is possible to cope with an external force from the Y-axis direction and the backlash between the clamp 1 and the holding portion. Therefore, the fixing structure between the clamp 1 and the pair of flat ribs 3 can be made stronger.

  In addition, in this embodiment, it is set as the structure by which a notch part is formed in the outer wall support piece 11 provided in the both ends side of the X-axis direction of the clamp 1, However, It is not limited to this. An outer wall portion perpendicular to the flat surface portion 11 is formed on a portion of the both ends of the clamp 1 in the X-axis direction, which is the outer shape of the clamp 1 when the clamp 1 is viewed from the direction perpendicular to the flat surface portion 11. It is good also as a structure by which a notch part is formed in a part.

  In the present embodiment, the cut-out portions 113 constituting the drop-off prevention portions are formed at positions corresponding to the four corners of the outer shape when viewed from the vertical direction (Y-axis direction) of the flat surface portion 20 in the clamp 1. However, the present invention is not limited to this.

  That is, as the structure for preventing the clamp 1 from coming off, when an external force is applied to the clamp 1 from any direction parallel to the flat surface portion 20, the external force acting on the pair of flat ribs 3 from the clamp 1 is applied to the removal preventing portion. What is necessary is just the structure which acts on the protrusion part 23 for prevention of slipping out via.

  For example, a notch portion is formed on at least two sides facing each other out of four sides of the rectangular shape of the outer shape when viewed from the vertical direction (Y-axis direction) of the plane portion 20 in the clamp 1. The structure in which the protrusion part 23 for prevention of removal corresponding to the notch part of the clamp 1 is formed may be sufficient.

  Even in such a configuration, when an external force is applied to the clamp 1 from any direction parallel to the plane portion 20, the external force acting on the pair of flat ribs 3 from the clamp 1 is applied to each notch portion 113. It can be made to act on the protrusion prevention part 23 via.

(10th Embodiment)
Next, a tenth embodiment of the present invention will be described. Description of the same parts as those in the ninth embodiment is omitted. In the present embodiment, the structure for preventing the clamp 1 from falling out as described in the ninth embodiment is different.

  Specifically, in the ninth embodiment, a notch portion is formed in the clamp 1, but in this embodiment, a hole portion that constitutes a slip prevention portion is formed on the surface of the clamp 1 that faces the flat portion 20. Has been. The hole is formed so as to correspond to the outer shape of the protrusion 23 for preventing slipping formed so as to protrude in the vertical direction on the flat portion 20.

  As described above, the omission prevention structure of the present embodiment has a structure in which the hole corresponding to the outer shape of the omission prevention protrusion 23 and the omission prevention protrusion 23 are fitted. Therefore, an external force applied to the clamp from the parallel direction (X, Z-axis direction) with respect to the flat surface portion 20 can be applied to the removal preventing protrusion 23 via the hole portion constituting the removal prevention portion. Thereby, the fixing structure of the clamp 1 and the pair of projecting portions 3 can be made stronger.

  Here, the hole part constituting the drop prevention part may be formed so as to have an inner shape dimension smaller than the outer dimension of the drop prevention protrusion 23 formed in the flat part 20. In other words, the dimensional tolerance between the hole constituting the drop prevention part and the drop prevention protrusion 23 is a fitting that can always be tightened when the hole part constituting the drop prevention part and the drop prevention protrusion 23 are fitted. You may set so that it may become a fit.

  Thereby, the omission prevention protrusion 23 can be press-fitted and fixed in the hole portion constituting the omission prevention portion, and the fixing structure between the clamp 1 and the pair of flat ribs 3 can be made stronger.

  In addition, the protrusion part 23 for drop prevention has a configuration in which the outer peripheral surface is fitted to the inner peripheral surface of the hole part constituting the drop prevention part, and external force applied to the clamp is applied to one drop prevention part from one hole part. The protrusion 23 can be made to act. For this reason, it is only necessary that at least one clamp 1 and one flat portion 20 are formed in the protrusions 23 for preventing slippage and the holes.

  Further, in the case where the drop prevention part is configured by a hole as in the present embodiment, the hole part which is a drop prevention part is formed in the flat part 20 and the protrusion 23 for drop prevention is formed in the clamp 1. Thus, a configuration may be employed in which the protrusions 23 for preventing removal formed on the clamp 1 are fitted with the holes of the flat surface portion 20. Also by this, the fixing structure between the clamp 1 and the pair of projecting portions 3 can be made stronger, that is, the pair of projecting portions 3 can hardly be removed from the holding portion.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and can be variously modified as follows.

  (1) In the above-described embodiment, when the pair of flat ribs 3 or the first and second pair of ribs 30a and 30b are inclined by an external force, the thin portions 21, 22, and 220 are provided on the flat surface portion 20 of the unit case 2. Although it is configured to be plastically deformed, it is not limited to this. For example, a thin wall portion is not provided and the force acting on the pair of flat plate ribs 3 or the first and second pair of ribs 30a and 30b is increased and inclined. You may let them.

  (2) In the above-described embodiment, the unit case 2 and the clamp 1 which are synthetic resin molded products are formed by die cutting, but the present invention is not limited thereto, and may be formed by cutting. Good.

  (3) In the above-described embodiment, the pair of ribs 3 and the clamp 1 formed in the unit case 2 of the air conditioning unit are fixed, but the present invention is not limited to the unit case 2 of the air conditioning unit, and various It can be applied to a molded article made of synthetic resin.

  (4) In the embodiments other than the sixth embodiment described above, the holding portion that holds the flat plate rib 3 or the first and second pair of ribs 30a and 30b is the inner wall surface 11a and the inner wall support portion of the outer wall support portion 11. 12, the inner wall surface 11 a of the outer wall support portion 11 and the outer wall of the inner wall support portion 12 are configured as in the sixth embodiment. The support portions 111 and 122 projecting from the wall surface facing the support portion 11 may be formed, and the support portions 111 and 122 may constitute a sandwiching portion.

  (5) In the above-described ninth and tenth embodiments, the example in which the prevention structure for preventing the clamp 1 from being detached from the pair of flat ribs 3 is applied to the configuration of the first embodiment. You may apply to the structure of this embodiment.

It is a disassembled perspective view of the fixing structure of the clamp which concerns on 1st Embodiment. It is AA sectional drawing of the flat rib vicinity of the unit case of FIG. It is BB sectional drawing of the clamp of FIG. It is explanatory drawing explaining the 1st contact | abutting step of the clamp which concerns on 1st Embodiment. It is explanatory drawing explaining the 2nd contact | abutting step of the clamp which concerns on 1st Embodiment. It is explanatory drawing explaining the fixing step of the clamp which concerns on 1st Embodiment. It is explanatory drawing explaining the fixing structure of the clamp which concerns on 2nd Embodiment. It is a front view of the clamp concerning a 3rd embodiment. It is a disassembled perspective view of the fixing structure of the clamp which concerns on 4th Embodiment. It is explanatory drawing explaining the fixing structure of the clamp which concerns on 5th Embodiment. It is a disassembled perspective view of the fixing structure of the clamp which concerns on 6th Embodiment. It is sectional drawing of the flat rib vicinity of the unit case which concerns on 6th Embodiment. It is the front view and side view of the clamp which concern on 6th Embodiment. It is explanatory drawing explaining the fixing structure of the clamp which concerns on 6th Embodiment. It is a disassembled perspective view of the fixing structure of the clamp which concerns on 7th Embodiment. It is a front view of the fixing structure of the clamp which concerns on 7th Embodiment. It is explanatory drawing explaining the fixing structure of the clamp which concerns on 8th Embodiment. It is explanatory drawing explaining the fixing step of the clamp which concerns on 8th Embodiment. It is explanatory drawing explaining the fixing structure of the clamp which concerns on 9th Embodiment. It is a front view of the clamp fixing structure according to the ninth embodiment. It is explanatory drawing explaining the fixing step of the clamp which concerns on 9th Embodiment.

Explanation of symbols

1 Clamp 2 Unit case (molded member)
3 A pair of flat plate ribs, a pair of first and second ribs (a pair of protrusions)
11 Outer wall support 12 Inner wall support

Claims (13)

A pair of protrusions (3) formed integrally with the flat surface portion (20) of the formed member (2) formed by the forming process only in the uniaxial direction and arranged to protrude in a direction perpendicular to the flat surface portion (20). ) And the clamp (1).
The pair of protrusions (3) includes an inner wall surface (3a) on the opposite side, an outer wall surface (3b) on the back side of the inner wall surface (3a), the inner wall surface (3a) and the outer wall surface (3b). Each having a side wall surface (3c) that intersects the flat surface portion (20), and is formed so as to be inclined in a direction toward or away from each other,
The clamp (1) includes an inner wall support portion (12) that supports the inner wall surface (3a) of the pair of protrusions (3) and an outer wall support portion (11) that supports the outer wall surface (3b). And a sandwiching portion capable of sandwiching the pair of projecting portions (3) in a state of being inclined toward or away from each other by the inner wall support portion (12) and the outer wall support portion (11). Formed,
One of the inner wall support part (12) and the outer wall support part (11) is in a direction approaching or moving away from each other due to contact of the pair of protrusions (3) with the side wall surface (3c). Composed of a pair of elastic support pieces that are elastically deformed,
In the abutting step in which the clamp (1) is moved in a direction close to the plane portion (20) from the perpendicular direction to bring the pair of protrusions (3) into contact with the clamp (1), the pair The protrusions (3) are inclined in a direction approaching or moving away from each other by an external force, and the pair of elastic support pieces are brought into contact with each other by contact with the side wall surfaces (3c) of the pair of protrusions (3). Elastically deforms in the direction of approaching or moving away,
In the fixing step of fixing the pair of protrusions (3) and the clamp (1), the pair of elastic support pieces are in contact with the side wall surfaces (3c) of the pair of protrusions (3). The clamp fixing structure, wherein the clamp structure is released and restored to the state before the contact step, and the pair of projecting portions (3) are held between the holding portions. The pair of protrusions (3) are formed so as to be tiltable in a direction approaching each other,
The inner wall support portion (12) is constituted by the pair of elastic support pieces,
The outer wall support part (11) is composed of a pair of outer wall support pieces facing each other with the inner wall support part (12) in between.
The pair of elastic support pieces and the pair of outer wall support pieces are formed so that their opposing directions are orthogonal to each other,
The holding portion is configured by a portion of the pair of outer wall support pieces facing each other and a portion of the pair of elastic support pieces facing the pair of outer wall support pieces,
In the abutting step, the pair of elastic support pieces abut against the side wall surfaces (3c) of the pair of projecting portions (3) in a state in which the portions facing each other are inclined toward each other by external force. Elastically deforms in the direction of approaching or moving away,
In the fixing step, the inner wall surfaces (3a) of the pair of protrusions (3) are in contact with portions of the pair of elastic support pieces facing the pair of outer wall support pieces, and the pair of protrusions (3 The outer wall surfaces (3b) of the pair of outer wall support pieces abut against the mutually facing portions of the pair of outer wall support pieces, so that the pair of projecting portions (3) are held by the holding portions. The clamp fixing structure according to claim 1. Each of the pair of protrusions (3) is composed of a flat protrusion piece,
In the abutting step, the pair of elastic support pieces abut against the side wall surfaces (3c) of the pair of projecting portions (3) in a state in which the portions facing each other are inclined toward each other by external force. The clamp fixing structure according to claim 2, wherein the clamp structure is elastically deformed in a direction away from the clamp. Each of the pair of projecting portions (3) is composed of a pair of projecting pieces (30a, 30b),
In the pair of projecting pieces (30a, 30b), the wall surfaces facing each other constitute the side wall surfaces (3c) of the pair of projecting portions (3),
In the abutting step, the pair of elastic support pieces are opposite to each other of the pair of projecting pieces of the pair of projecting portions (3) in a state where the portions facing each other are inclined toward each other by an external force. The clamp fixing structure according to claim 2, wherein the clamp fixing structure is elastically deformed in a direction approaching the wall surface (3 c) and approaching each other. The pair of outer wall support pieces are formed such that portions facing each other are in contact with the outer wall surfaces (3b) of the pair of protrusions (3) in a state of being inclined in a direction approaching each other,
5. The method according to claim 2, wherein, in the abutting step, the pair of protrusions (3) are inclined in a direction in which the pair of outer wall supporting pieces abut against each other facing each other and approach each other. The clamp fixing structure according to one. The pair of protrusions (3) are formed so as to be inclined in a direction away from each other,
The outer wall support portion (11) has a pair of outer wall support pieces (112a, 112b) facing each other with the inner wall support portion (12) interposed therebetween.
Each of the pair of outer wall support pieces (112a, 112b) is constituted by the pair of elastic support pieces,
The inner wall support portion (12) contacts the pair of projecting portions (3) in a state where a pair of opposed surfaces (124) facing the pair of outer wall support pieces (112a, 112b) are inclined away from each other. It is formed to be able to touch,
The sandwiching portion is configured by a portion of the pair of outer wall support pieces (112a, 112b) facing each other and the pair of facing surfaces (124) of the inner wall support portion (12),
In the contact step, the pair of protrusions (3) are in contact with the pair of opposed surfaces (124) of the inner wall support portion (12) and incline away from each other, and the pair of outer wall support pieces ( 112a and 112b), the pair of elastic support pieces are in contact with the side wall surfaces (3c) of the pair of projecting portions (3) in a state where the portions facing each other are inclined away from each other, and away from each other. Elastically deformed in the direction,
In the fixing step, the inner wall surfaces (3a) of the pair of protrusions (3) abut against the pair of opposed surfaces (124) of the inner wall support portion (12), and the pair of protrusions (3) The abutment wall surfaces (3b) are in contact with the opposing portions of the pair of outer wall support pieces (112a, 112b), so that the pair of protrusions (3) are held between the holding portions. The clamp fixing structure according to claim 1, wherein: The pair of projecting portions (3) has a tip portion (31) that can be tilted in a direction approaching each other and a lower end portion (32) that can be tilted in a direction away from each other, and is configured to be bent in a dogleg shape.
The clamp (1) includes a contact portion (14) that contacts the lower end portions (32) of the pair of protrusions (3) in addition to the inner wall support portion (12) and the outer wall support portion (11). In one piece,
The inner wall support portion (12) is constituted by the pair of elastic support pieces facing each other with the contact portion (14) interposed therebetween,
The outer wall support part (11) is composed of a pair of outer wall support pieces facing each other with the inner wall support part (12) in between.
The pair of elastic support pieces and the pair of outer wall support pieces are formed so that their opposing directions are orthogonal to each other,
The pair of outer wall support pieces are formed such that portions facing each other are in contact with the outer wall surfaces (3b) of the pair of protrusions (3) in a state of being inclined in a direction approaching each other,
The holding portion is configured by a portion of the pair of outer wall support pieces facing each other and a portion of the pair of elastic support pieces facing the pair of outer wall support pieces,
In the contact step, the pair of elastic support pieces elastically deform in a direction in which the portions facing each other come into contact with the side wall surfaces (3c) of the pair of protrusions (3) and away from each other,
Thereafter, the pair of projecting portions (3) is configured such that the tip portions (31) of the pair of projecting portions (3) abut against the mutually opposing portions of the pair of outer wall support pieces, and the pair of projecting portions (3) ) And the lower end portion (32) of the contact portion is in contact with the contact portion (14), and is bent into a dogleg shape.
In the fixing step, the inner wall surface (3a) of the distal end portion (31) of the pair of projecting portions (3) abuts against a portion of the pair of elastic support pieces facing the pair of outer wall support pieces, When the outer wall surface (3b) of the tip end portion (31) of the pair of projecting portions (3) abuts against the mutually opposing portions of the pair of outer wall support pieces, the pair of projecting portions (3) The clamp fixing structure according to claim 1, wherein the clamp is clamped by the clamping portion.   The flat portion (20) has a thin portion (21, 22, 220) formed in the vicinity of a fixed end portion of the pair of projecting portions (3). The clamp fixing structure described in 1.   The clamp (1) abuts against the side wall surfaces (3c) of the pair of protrusions (3) in the fixing stage, and prevents the pair of protrusions (3) from coming out of the holding part. The clamp fixing structure according to any one of claims 1 to 8, further comprising an escape prevention guide (13). One of the flat surface portion (20) and the clamp (1) is formed with one or more drop prevention protrusions 23 (23) protruding in a direction perpendicular to the flat surface portion (20). Is formed with a slip-off preventing portion that fits with the one or more drop-preventing projections 23 (23) in a fixed state in which the pair of projections (3) and the clamp (1) are fixed. ,
When the external force is applied to the clamp (1) from any direction parallel to the flat surface portion (20) in the fixed state, the removal preventing portion receives an external force applied to the clamp (1). The clamp fixing structure according to any one of claims 1 to 8, wherein the clamp fixing structure is provided so as to act on the one or more drop prevention protrusions (23). The clamp (1) has a quadrangular outer shape when viewed from a direction perpendicular to the plane portion (20),
The drop-off prevention part is a notch part (113) formed at a position corresponding to the four corners of the square shape of the clamp (1).
11. The clamp fixing structure according to claim 10, wherein the drop-out preventing protrusion 23 is fitted into the notch 113 in the fixed state. 11. The drop prevention portion is a hole corresponding to the outer shape of the drop prevention protrusion 23 (23),
11. The clamp fixing structure according to claim 10, wherein the protrusion 23 for preventing slipping is fitted into the hole in the fixed state.   The fitting prevention dimension when the notch part and the at least one removal preventing projection 23 (23) are fitted to each other is the tightening allowance. The clamp fixing structure according to any one of claims 10 to 12, wherein the clamp fixing structure is set so as to be able to be fitted.

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