Clamping Tool

Abstract

To provide a clamp tool that can reduce restrictions on the size of a groove when being inserted into a hole penetrating on the bottom part of the groove, and enables strong attachment.SOLUTION: A clamp tool comprises a base part 22, an attachment part 24 and a drawing part 26. The attachment part 24 attaches the base part 22 to a groove former. The attachment part 24 has a strut part 40 and a retaining part 42. The strut part 40 is inserted into an attachment hole of the groove former. The drawing part 26 draws the retaining part 42 to the base part 22 side when the strut part 40 is inserted into the attachment hole and the retaining part 42 is caught by the edge of the attachment hole. The drawing part 26 has a claw-side cantilever part 62. The claw-side cantilever part 62 extends toward a hook part 44 from a location on the side opposite to the strut part 40 when viewed from the position of the retaining part 42 and on the side of the base part 22 when viewed from the position of the retaining part 42.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention The groove is provided with a base portion, a support portion, a retaining portion, and a pulling portion, and the support portion is inserted into an attachment hole penetrating the bottom of the groove, and the retaining portion is hooked onto the edge of the attachment hole, thereby attaching the base portion to a groove forming body that forms the groove, and when the retaining portion is hooked onto the edge of the attachment hole, the pulling portion draws the retaining portion toward the base portion. Regarding clamping devices. [Background technology]

[0002] Patent Document 1 discloses a clamp for a bolt. This clamp includes a base portion and an attachment portion. The attachment portion is provided on the base portion. The attachment portion attaches the base portion to a plate having an attachment hole. The attachment portion includes a support portion, a branch portion, and a retaining portion. The support portion is inserted into the attachment hole. The branch portion branches off from the support portion. The retaining portion is provided on the branch portion. The retaining portion penetrates the attachment hole when the support portion is inserted into the attachment hole. One end of the retaining portion is provided with a hook portion that hooks onto the edge of the attachment hole. One end of the retaining portion is disposed closer to the tip of the support portion than the branch portion. One end of the retaining portion is closer to the support portion than the other end of the retaining portion. When the other end of the retaining portion moves in a direction toward the support portion, the one end of the retaining portion moves away from the support portion. The attachment portion further includes a retaining portion. When the retaining portion moves so that one end of the retaining portion is separated from the support portion, the retaining portion maintains the state in which the one end of the retaining portion is separated from the support portion.

[0003] The clamping device shown in Patent Document 1 can reduce the height of protrusion from the back surface of a plate material when attached to the plate material. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2012-117640 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the clamping device disclosed in Patent Document 1 has a problem in that there are significant restrictions on the size of the groove when attempting to insert the clamping device into a mounting hole that penetrates at the bottom of the groove. The object of the present invention is to provide a clamping device that has fewer restrictions on the size of the groove when inserted into a mounting hole that penetrates at the bottom of the groove and that allows for strong attachment. [Means for solving the problem]

[0006] The present invention will be described with reference to the drawings. The reference numerals in the drawings are used in this section to facilitate understanding of the contents of the invention. The reference numerals in the drawings are not intended to limit the contents of the invention to the scope shown in the drawings.

[0007] In order to achieve the above-mentioned object, according to one aspect of the present invention, the clamping device 10 includes a base portion 22 and a mounting portion 24. The mounting portion 24 is provided on the base portion 22. The mounting portion 24 protrudes from the base portion 22. . Tori The attachment portion 24 has a support portion 40 and a retaining portion 42. . The stopper portion 42 is attached to the support portion 40. To the base side The clamping device 10 further includes a drawing portion 26. . Pull The edge portion 26 has a base side cantilever portion 60 and a claw side cantilever portion 62. The base side cantilever portion 60 protrudes from the base portion 22 in a direction different from the direction in which the retaining portion 42 is located. The base side cantilever portion 60 has a fixed end at a point where it protrudes from the base portion 22. The claw side cantilever portion 62 is connected to the base side cantilever portion 60. The claw side cantilever portion 62 has a fixed end at a point where it is connected to the base side cantilever portion 60. The claw side cantilever portion 62 extends toward the retaining portion 42 from a point on the opposite side to the support portion 40 as viewed from the position of the retaining portion 42 and on the base portion 22 side as viewed from the position of the retaining portion 42. Moreover, the base side cantilever portion 60 described above has a base side structure portion 80 and a protrusion portion 82. The base side structure portion 80 is directly connected to and fixed to the base portion 22. The protrusion portion 82 is connected to the base portion 22 via the base side structure portion 80. The protrusion portion 82 protrudes from the base side structure portion 80. The claw side cantilever portion 62 is directly connected to the base side structure portion 80.

[0008] The mounting portion 24 mounts the base portion 22 to the groove forming body 240. The groove forming body 240 forms a groove 260. A mounting hole 262 penetrates the bottom of the groove 260. The support portion 40 is inserted into the mounting hole 262. When the support portion 40 is inserted into the mounting hole 262 and the retaining portion 42 catches on the edge of the mounting hole 262, the pulling portion 26 pulls the retaining portion 42 toward the base portion 22.The base side cantilever portion 60 protrudes from the base portion 22 in a direction different from the direction in which the retaining portion 42 is located. The claw side cantilever portion 62 extends from a position on the opposite side of the support portion 40 from the position of the retaining portion 42 and on the base portion 22 side from the position of the retaining portion 42 toward the retaining portion 42. The claw side cantilever portion 62 is connected to the base side cantilever portion 60. This makes it difficult for the claw side cantilever portion 62 to interfere with the groove 260 compared to the case described below. This case is a case in which the claw side cantilever portion 62 protrudes from the base portion 22 toward the opposite side of the support portion 40 from the position of the retaining portion 42. When the claw side cantilever portion 62 does not easily interfere with the groove 260, the constraints on the size of the groove 260 are reduced. The retaining portion 42 also branches off from the support portion 40. Therefore, the retaining portion 42 penetrates the mounting hole 262 when the support portion 40 is inserted into the mounting hole 262. When the support portion 40 penetrates the mounting hole 262, the retaining portion 42 is caught on the edge of the mounting hole 262. On the other hand, the base side cantilever portion 60 has a fixed end at a protruding portion from the base portion 22. The claw side cantilever portion 62 has a fixed end at a connection portion with the base side cantilever portion 60. As a result, the claw side cantilever portion 62 is pressed strongly against the bottom of the groove 260 when the support portion 40 is inserted into the mounting hole 262, compared to a case where the claw side cantilever portion 62 can easily rotate around the connection portion with the base side cantilever portion 60. When the pressing force of the claw side cantilever portion 62 against the bottom of the groove 260 becomes stronger, the pulling force of the retaining portion 42 toward the base portion 22 by the drawing portion 26 becomes stronger. When the pulling force of the retaining portion 42 becomes stronger while it is caught on the edge of the mounting hole 262, the mounting portion 24 firmly attaches the base portion 22 to the groove forming body 240. As a result, the constraints on the size of the groove 260 when inserting the retaining portion 42 into the through hole at the bottom of the groove 260 are reduced, and a clamping device 10 capable of being firmly attached is provided.

[0009] In addition, it is preferable that the claw-side cantilever portion 62 has a force support portion 100 and a connecting portion 102. The force support portion 100 is When it receives force, The connecting portion 102 is bent so as to protrude in the opposite direction to the protruding direction of the mounting portion 24 as viewed from the base portion 22. The connecting portion 102 is fixed to the base-side cantilever portion 60. The connecting portion 102 connects the force support portion 100 and the base-side cantilever portion 60.

[0010] The connecting portion 102 is bent so as to protrude in the opposite direction to the protruding direction of the mounting portion 24 as seen from the base portion 22. The connecting portion 102 is fixed to the base side cantilever portion 60. The connecting portion 102 connects the force support portion 100 and the base side cantilever portion 60. As a result, the deflection of the claw side cantilever portion 62 occurs even at a location farther away from the groove 260 than when the claw side cantilever portion 62 does not protrude in the opposite direction to the protruding direction of the mounting portion 24 as seen from the base portion 22. Since the deflection of the claw side cantilever portion 62 occurs even at a location farther away from the groove 260, the risk of the claw side cantilever portion 62 interfering with the groove 260 can be reduced compared to when this is not the case. If the risk of the claw side cantilever portion 62 interfering with the groove 260 can be reduced, the constraints on the size of the groove 260 are reduced.

[0011] It is also desirable that the above-mentioned pull-up portion 26 further has a beam end curved surface forming portion 64. The beam end curved surface forming portion 64 forms a curved surface whose outer peripheral surface is arc-shaped in a cross section along the protruding direction of the base-side cantilever portion 60 from the base portion 22 at the root portion of the base-side cantilever portion 60 and along the protruding direction of the mounting portion 24 from the base portion 22. The curved surface is formed at least at a location corresponding to the back surface as viewed from the base-side cantilever portion 60.

[0012] When a curved surface is formed in which the outer peripheral surface is arc-shaped in a cross section along the protruding direction of the base-side cantilever portion 60 from the base portion 22 and along the protruding direction of the attachment portion 24 from the base portion 22 at the base portion of the base-side cantilever portion 60, the portion of the curved surface that contacts the bottom of the groove 260 changes as the claw-side cantilever portion 62 pressed against the bottom of the groove 260 is deflected by receiving a force. Since the portion of the curved surface that contacts the bottom of the groove 260 changes, the curved surface becomes similar to sliding while rolling on the surface of the bottom of the groove 260. When the curved surface becomes similar to rolling on the bottom of the groove 260, the resistance that the claw-side cantilever portion 62 receives from the bottom of the groove 260 as the claw-side cantilever portion 62 deflects becomes smaller than when the same point of the tip of the claw-side cantilever portion 62 continues to contact the bottom of the groove 260.

[0013]

[0014] Effect of the Invention

[0015] According to the present invention, restrictions on the size of the groove when inserting the mounting hole penetrating the bottom of the groove are reduced, and strong mounting is possible. [Brief description of the drawings]

[0016] [Figure 1] 1 is an overall view of a clamping device according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a front view of a base portion, a mounting portion, and a gathering portion according to an embodiment of the present invention. [Diagram 3] 1 is a perspective view of a base portion, a mounting portion, and a drawing portion according to an embodiment of the present invention. FIG. [Figure 4] 1A and 1B are diagrams showing a base side cantilever portion, a claw side cantilever portion, and a beam end curved surface forming portion according to one embodiment of the present invention. [Diagram 5] 1A shows a clamping device according to an embodiment of the present invention being inserted into a mounting hole in a groove formed by a groove former; FIG. [Figure 6] FIG. 13 is a diagram showing the state in which the clamping device according to the embodiment of the present invention has been completely attached to the groove. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are the same. Therefore, detailed descriptions thereof will not be repeated.

[0018] [Clamp configuration] Fig. 1 is an overall view of a clamping tool 10 according to the present embodiment. The configuration of the clamping tool 10 according to the present embodiment will be described with reference to Fig. 1.

[0019] The clamp tool 10 according to this embodiment is attached to a groove 260 formed by a groove forming body 240. The clamp tool 10 attached to this groove 260 bundles various objects such as a wire harness (not shown), and the object is fixed to the groove forming body 240.

[0020] The clamping device 10 according to this embodiment includes a binding portion 20, a base portion 22, an attachment portion 24, and a gathering portion .

[0021] The binding portion 20 bundles various items such as the wire harness described above. The base portion 22 serves as the foundation of the clamp device 10 according to this embodiment. An end of the binding portion 20 is fixed to the base portion 22. The mechanism for this fixing is well known, so a detailed description thereof will not be repeated here. The attachment portion 24 is provided on the base portion 22. The attachment portion 24 protrudes from the base portion 22. The attachment portion 24 attaches the base portion 22 to the groove forming body 240. The pulling portion 26 pulls the attachment portion 24 towards the base portion 22.

[0022] Fig. 2 is a front view of the base portion 22, the attachment portion 24, and the gathering portion 26 according to this embodiment. Fig. 3 is a perspective view of the base portion 22, the attachment portion 24, and the gathering portion 26 according to this embodiment. These configurations according to this embodiment will be described with reference to Figs. 2 and 3.

[0023] The mounting portion 24 in this embodiment has a support post 40 and a pair of retaining portions 42, 42. As shown in Fig. 1, a mounting hole 262 penetrates the bottom of the groove 260. The support post 40 is intended to be inserted into the mounting hole 262. The support post 40 in this embodiment is cylindrical with a rounded tip and a hole.

[0024] In this embodiment, the retaining portion 42 branches off from the tip of the support portion 40 toward the base portion 22. The retaining portion 42 is intended to pass through the mounting hole 262 together with the support portion 40 when the support portion 40 is inserted into the mounting hole 262. A hook portion 44 is provided at one end of the retaining portion 42. The hook portion 44 hooks onto the edge of the mounting hole 262 when the retaining portion 42, which was elastically deformed while passing through the mounting hole 262, passes through the mounting hole 262 and returns to its original shape.

[0025] The gathering portion 26 has a pair of base side cantilever beam portions 60, 60, a pair of claw side cantilever beam portions 62, 62, and a pair of beam end curved surface forming portions 64, 64.

[0026] 2, the base cantilever portion 60 protrudes from the base portion 22 in a direction different from the direction in which the hook portion 44 is located. The base cantilever portion 60 has a fixed end at a point protruding from the base portion 22. As a result, a moment applied to the base cantilever portion 60 is transmitted to the base portion 22.

[0027] The claw side cantilever portion 62 is connected to the base side cantilever portion 60. The claw side cantilever portion 62 has a fixed end at the connection point with the base side cantilever portion 60. As a result, the moment applied to the claw side cantilever portion 62 is transmitted to the base side cantilever portion 60. The moment applied to the claw side cantilever portion 62 is not not transmitted to the base side cantilever portion 60 because the second moment of area at the connection point is significantly smaller than that of the surrounding area. As shown in FIG. 2 in particular, the claw side cantilever portion 62 extends toward the hook portion 44 from a position that satisfies the following two requirements. One of the two requirements is that the claw side cantilever portion 62 is on the opposite side to the support portion 40 as viewed from the position of the retaining portion 42. The other of the two requirements is that the claw side cantilever portion 62 is on the base portion 22 side as viewed from the position of the retaining portion 42.

[0028] The beam end curved surface forming portion 64 forms a curved surface whose outer surface is arc-shaped in a cross section along the protruding direction of the base side cantilever portion 60 from the base portion 22 at the root portion of the base side cantilever portion 60 and the protruding direction of the mounting portion 24 from the base portion 22.

[0029] 4 is a diagram showing the base side cantilever beam portion 60, the claw side cantilever beam portion 62, and the beam end curved surface forming portion 64 according to this embodiment. The configurations of the base side cantilever beam portion 60 and the claw side cantilever beam portion 62 according to this embodiment will be described with reference to FIG.

[0030] In this embodiment, the base cantilever portion 60 has a base structure portion 80 and a protrusion portion 82. The base structure portion 80 is directly connected to and fixed to the base portion 22. The protrusion portion 82 is connected to the base portion 22 via the base structure portion 80. The protrusion portion 82 protrudes from the base structure portion 80.

[0031] In this embodiment, the claw-side cantilever portion 62 has a force support portion 100 and a connecting portion 102. The force support portion 100 supports the force received when the support portion 40 is inserted into the mounting hole 262. The connecting portion 102 is fixed to the base-side cantilever portion 60. The connecting portion 102 connects the force support portion 100 and the protrusion portion 82. In the present embodiment, the connecting portion 102 is bent. As is clear from Fig. 2 and Fig. 3, as a result of this bending, the connecting portion 102 protrudes in the opposite direction to the protruding direction of the mounting portion 24 as seen from the base portion 22. In the present embodiment, the connecting portion 102 also protrudes in a direction away from the base portion 22.

[0032] [Method of manufacturing the clamping tool] The clamping device 10 according to this embodiment is manufactured by injection molding, that is, by injecting synthetic resin into a mold (not shown) for forming the clamping device 10.

[0033] [How to use the clamp] Fig. 5 is a diagram showing a state in which the clamp tool 10 according to this embodiment is being inserted into the mounting hole 262 of the groove 260 formed by the groove forming body 240. Fig. 6 is a diagram showing a state in which the mounting of the clamp tool 10 according to this embodiment into the groove 260 is completed. A method of using the clamp tool 10 according to this embodiment will be described with reference to Figs. 5 and 6.

[0034] The worker inserts the mounting portion 24 of the clamping device 10 according to this embodiment into the mounting hole 262. As a result, the support portion 40 and the pair of retaining portions 42, 42 enter the mounting hole 262. As they enter, the pair of retaining portions 42, 42 are pushed by the edge of the mounting hole 262 and bend. As the support portion 40 and the retaining portions 42, 42 continue to advance inside the mounting hole 262, the pair of beam end curved surface forming portions 64, 64 come into contact with the bottom surface of the groove 260. This state is shown in FIG. 5.

[0035] The worker continues to push the clamp device 10 according to this embodiment into the mounting hole 262. As a result, the pair of beam end curved surface forming portions 64, 64 slide along the bottom surface of the groove 260. As the pair of beam end curved surface forming portions 64, 64 slide along the bottom surface of the groove 260, the pair of claw side cantilever beam portions 62, 62 bends.

[0036] The worker further pushes the clamp device 10 according to this embodiment into the mounting hole 262. As a result, when the retaining portions 42, 42 come out of the mounting hole 262, the bent retaining portions 42, 42 try to return to their original shape. As a result, the hook portion 44 is pressed against the edge of the mounting hole 262. During this time, as the pair of beam end curved surface forming portions 64, 64 slides along the bottom surface of the groove 260, the pair of claw side cantilever portions 62, 62 bends further.

[0037] When the hook portion 44 is pressed against the edge of the mounting hole 262, the worker releases his / her hand from the clamp tool 10 according to this embodiment. This causes the pair of claw-side cantilever beams 62, 62 that have been bent to return to their original shape. As the pair of claw-side cantilever beams 62, 62 return to their original shape, the retaining portions 42, 42 including the hook portions 44, 44 are drawn toward the base portion 22. In this manner, when the support portion 40 is inserted into the mounting hole 262 and the hook portions 44, 44 are caught on the edge of the mounting hole 262, the drawing portion 26 draws the retaining portions 42, 42 toward the base portion 22. When the retaining portions 42, 42 are drawn toward the base portion 22, the mounting of the clamp tool 10 according to this embodiment to the groove 260 is completed. After that, the worker bundles the long object (not shown) with the bundling portion 20.

[0038] [Effects of the clamping device according to this embodiment] According to the clamp device 10 of this embodiment, there is less restriction on the size of the groove 260 when the clamp device 10 is inserted into the through hole at the bottom of the groove 260, and a clamp device 10 is provided that can be firmly attached.

[0039] Furthermore, with the clamping device 10 according to this embodiment, the resistance received from the bottom of the groove 260 is small.

[0040] In this embodiment, the portion of the curved surface formed by the beam end curved surface forming portion 64 that contacts the bottom of the groove 260 varies as the claw side cantilever portion 62 pressed against the bottom of the groove 260 bends under force. Since the portion of the curved surface that contacts the bottom of the groove 260 varies, the curved surface rolls on the bottom of the groove 260. As a result, in this embodiment, the resistance that the claw side cantilever portion 62 receives from the bottom of the groove 260 as the claw side cantilever portion 62 bends is smaller than when the same point of the tip of the claw side cantilever portion 62 continues to be in contact with the bottom of the groove 260.

[0041] In this embodiment, the protrusion 82 protrudes from the base structure part 80. In this case, the second moment of area at the part where the protrusion 82 protrudes is larger than that of the part next to the protrusion. When comparing the same bending moment, the deflection angle when the second moment of area is large is smaller than that when the moment of area is small. As a result, when the claw side cantilever part 62 receives a force as the support part 40 is inserted into the mounting hole 262, the deflection angle at the part where the protrusion 82 protrudes is smaller than that when the protrusion 82 does not exist. When the deflection angle at the part where the protrusion 82 protrudes is smaller, the deflection amount of the base structure part 80 is correspondingly smaller. As a result, compared to when the deflection amount of the base structure part 80 is large, the pressing force of the claw side cantilever part 62 against the bottom part of the groove 260 as the support part 40 is inserted into the mounting hole 262 is stronger. As a result, a strong attachment is possible.

[0042] [Description of Modifications] The embodiments disclosed herein are illustrative in all respects. The scope of the present invention is not limited to the above-described embodiments. Of course, various design changes may be made without departing from the spirit of the present invention.

[0043] For example, the configuration of the base cantilever portion 60 is not limited to that described above. . Pull The edge portion 26 does not necessarily have to have the beam end curved surface forming portion 64. The form of the connecting portion 102 is not limited to the above. [Explanation of symbols]

[0044] 10...Clamping tool 20...Binding part 22…Base section 24…Mounting part 26…Hikiyori Department 40...Strut part 42…Retaining part 44…Hook section 60...Base side cantilever section 62...Claw side cantilever part 64…Beam end curved surface forming part 80...Base structure part 82...Protrusion 100...force support part 102...Connection part 240...Groove forming body 260...Groove 262...Mounting hole

Claims

1. A base portion; a mounting portion provided on the base portion and protruding from the base portion, The mounting portion is A support portion and a retaining portion that branches from the support portion toward the base portion, The device further includes a pull-in portion, The said drawing part is a base-side cantilever portion that protrudes from the base portion in a direction different from the direction in which the retaining portion is located and has a fixed end at a protruding portion from the base portion; a claw-side cantilever portion connected to the base-side cantilever portion, the claw-side cantilever portion having a fixed end at a connection point with the base-side cantilever portion, and extending from a point on the opposite side of the support portion from the position of the retaining portion and on the base portion side from the position of the retaining portion toward the retaining portion, The base cantilever portion is A base structure portion directly connected to and fixed to the base portion; a protrusion portion that is connected to the base portion via the base structure portion and protrudes from the base structure portion, A clamping tool, characterized in that the claw-side cantilever portion is directly connected to the base-side structure portion.

2. The claw side cantilever portion is a force support section that supports the force when the force is received; The clamping device according to claim 1, characterized in that it is bent so as to protrude in a direction opposite to the protruding direction of the mounting portion when viewed from the base portion, is fixed to the base cantilever portion, and has a connecting portion that connects the force support portion and the base cantilever portion.

3. The clamping device according to claim 1, characterized in that the pulling portion further has a beam end curved surface forming portion that forms a curved surface having an arc-shaped outer peripheral surface in a cross section along the protruding direction of the base cantilever portion from the base portion and the protruding direction of the mounting portion from the base portion at the root portion of the base cantilever portion, at least at a location of the tip of the claw side cantilever portion that corresponds to the back surface when viewed from the base cantilever portion.

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