JP2011099483A - Clamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clamp simultaneously achieved in the easy opening and closing of the clamp and high durability even if rigidity is high. <P>SOLUTION: The clamp 1 includes a pair of a first holding unit 10 and a second holding unit 20 having a shape of a cylindrical body split into two in the axial direction, and a fitting member 30 fitted to the first holding unit 10. An extension part 11 has an L-shaped section, and extends from an outer circumferential surface of a bottom 10a of the first holding unit 10 to a part in a vicinity of one end 10b of the first holding unit 10 along the outer circumferential surface of the first holding unit 10. A first locking piece 12 is provided at a tip of the extension part 11. A second locking piece 21 is provided at one end 20a of the second holding unit 20. In the clamp 1, a first locking piece 12 is provided at the extension part 11, and the first locking piece 12 and the second locking piece 21 can be easily locked and unlocked to/from each other by the spring property of the extension part 11. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a clamp used for fixing an electric wire or the like to a substrate or a housing.

  Conventionally, resin or metal clamps have been used to determine the wiring and piping paths of wires and pipes (hereinafter also simply referred to as electric wires and the like) such as wires and cables wired in electronic equipment.

  For example, a clamp made of a synthetic resin including a gripping part that grips an outer periphery of an electric wire or the like and an attachment part that is attached to a plate member such as an electronic substrate or a housing has been proposed (see Patent Document 1).

Japanese Laid-Open Patent Publication No. 2008-91636

  The resin clamp as described above uses the engagement of resin parts to open and close the clamp (open and close the gripping portion). General resin parts are deformed when a load is applied, and return to their original state when the load is removed. Therefore, the resin can be easily deformed by hand to open and close the clamp. There is no need for screwing to open and close the door, so workability is good. However, it is inferior in durability (particularly heat resistance) and is difficult to use for a long time under high temperature conditions.

  On the other hand, metal clamps are generally more durable than resin parts. However, the clamp cannot be easily opened and closed like a resin clamp, and when attaching an electric wire or the like to the clamp, it is necessary to perform screwing and workability is poor. Moreover, there exists a possibility that the electric wire etc. to hold | maintain may be damaged with a metal.

  Here, a clamp made by changing the material from general-purpose resin to engineering plastic (hereinafter also simply referred to as engineering plastic) with the same shape as the above resin clamp can increase the heat resistance, and The risk of damaging etc. can be reduced.

  However, engineering plastics are characterized by high heat resistance and high rigidity and poor springiness. For this reason, if the clamp is made in the same shape as a general-purpose resin clamp, it is necessary to apply a very strong force to open and close the clamp. Therefore, when attaching an electric wire or the like, screwing is performed, and workability is poor.

  Thus, in order to increase the durability of the clamp, it is necessary to increase the rigidity of the clamp, but if the rigidity of the clamp is increased, the springiness of the clamp will be lost, and the clamp can be easily opened and closed. There was a problem of disappearing.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a clamp that can be easily opened and closed.

  The invention according to claim 1, which has been made to solve the above-described problem, includes a pair of first holding part and second holding part having a shape formed by dividing a cylindrical body into two parts along a surface along the axial direction, A hinge portion that rotatably connects the ends of the first holding portion and the second holding portion, and a locking portion that maintains a contact state in which the ends opposite to the end portions are in contact with each other. The locking portion includes a first locking piece provided in an extending portion extending from an outer peripheral surface of the first holding portion, and provided in the second holding portion. And a second locking piece that is locked to one locking piece and maintains the contact state.

  In the clamp configured as described above, since the first locking piece is provided in the extending portion, the first locking piece and the second locking piece are locked using the spring property of the extending portion. Can be done. Unlike the first holding part and the second holding part, the extending part does not need to be provided with a function of holding the electric wire or the like, so it is not necessary to increase the strength and can be configured to have good spring properties. it can.

  Therefore, even if the first holding part and the second holding part have high rigidity, the clamp can be easily opened and closed. Thereby, easy opening and closing of the clamp and high durability can be realized at the same time.

  In addition, in order to improve the spring property of the extension part, it is possible to lengthen the length of the extension part, for example. In order to lengthen the length of the extension part, the position where the extension part extends on the outer peripheral surface of the first holding part is set to a position far from the first locking piece, or the extension part is made corrugated or the like. It may be formed by bending. Moreover, you may improve spring property by forming an extension part thinly and thinly in the range in which a 1st locking piece does not lose a function.

  A clamp according to a second aspect is the clamp according to the first aspect, wherein the hinge portion is a rotating shaft provided at one of the first holding portion and the second holding portion. And a bearing that is provided at the other end different from the one and rotatably supports the rotating shaft.

In the clamp configured as described above, the hinge portion can be formed of a highly rigid material. Therefore, it is possible to integrally mold the same material as the first holding part and the second holding part.
According to a third aspect of the present invention, in the clamp according to the second aspect, the bearing is configured such that the rotating shaft is detachable from a predetermined direction.

In the clamp configured as described above, since it is not necessary to perform screwing or the like when fitting the rotating shaft to the bearing, the first holding portion and the second holding portion can be easily attached and detached.
A clamp according to a fourth aspect is the clamp according to any one of the first to third aspects, wherein the clamp is provided in the first holding part or the second holding part and is attached to an external attachment object. An attachment member is provided.

  In the clamp configured as described above, it can be attached to the attachment object by the attachment member. Therefore, a clamp can be arrange | positioned in the desired position inside an apparatus, and an electric wire etc. can be wired and piping to a desired position.

  The clamp according to claim 5 is the clamp according to claim 4, wherein the attachment member is inserted into a hole formed in the attachment object from one surface of the attachment object; It is provided with the said pillar part, and consists of a contact part which contacts the said mounting target object from the other surface, and a press member which presses the said mounting target object from one side, It is characterized by the above-mentioned.

In the clamp configured as described above, the clamp can be strongly fixed to the attachment object by sandwiching the attachment object between the contact portion and the pressing member.
The clamp according to claim 6 is the clamp according to claim 5, wherein the pressing member is a metal leaf spring, and at least a part of the region is the first holding portion or the second holding portion. It is located in the inner peripheral surface of this.

  In the clamp configured as described above, since the pressing member is a metal leaf spring, the pressing member has a good spring property, and the object to be attached can be sandwiched with a strong force. Moreover, since durability is high and the force pinched over a long period of time is maintained, it is convenient. Furthermore, since the electric wire etc. which a clamp hold | maintains and a leaf | plate spring can be made to contact, a frame ground can be taken, for example by attaching a clamp to a sheet metal housing | casing.

  The clamp according to claim 7 is the clamp according to any one of claims 1 to 6, wherein the second locking piece extends from the outer peripheral surface of the second holding portion. It is provided in the extension part.

  In the clamp configured as described above, since the second locking piece is provided in the second extending portion, when the first locking piece and the second locking piece are locked, the extension portion Not only the spring property but also the spring property of the second extending portion can be used. Therefore, the clamp can be opened and closed more easily.

Plan view (a), left side view (b), front view (c), right side view (d), bottom view (e), upper left perspective view (f), upper right perspective view (g), lower left perspective view of the clamp Figure (h), lower right perspective view (i), rear sectional view (j) Front view of first holding part (a), upper left perspective view (b), lower left perspective view (c) Front view (a), upper left perspective view (b), lower left perspective view (c), upper right perspective view (d), lower right perspective view (e), rear sectional view (f) of the second holding portion Plan view (a), front view (b), upper right perspective view (c), right side view (d) of leaf spring Upper right perspective view of clamp (a), lower left perspective view (b), rear sectional view (c) Plan view (a), front view (b) of mounting object Upper left perspective view (a), lower left perspective view (b), front cross-sectional view (c), right side cross-sectional view (d) in a state where the clamp is attached to the mounting object. Front view of modified clamp

Embodiments of the present invention will be described below with reference to the drawings.
[Example]
(1) Configuration of Clamp The clamp 1 of this embodiment is attached to a pair of first holding unit 10 and second holding unit 20 and the first holding unit 10 as shown in FIGS. Mounting member 30 to be formed.

The first holding part 10 and the second holding part 20 are made of engineering plastic (in this embodiment, PPS (polyphenylene sulfide)).
Polyphenylene sulfide resin (PPS) has a heat distortion temperature of 260 ° C. or higher, has heat resistance to solder, has a high continuous use temperature of 170 to 200 ° C., and can withstand use at high temperatures. In addition, the elastic modulus (rigidity) and strength are high compared to other resins. Furthermore, it exhibits flame retardancy equivalent to UL94 standard V-0 without the addition of flame retardant, has chemical resistance that is not affected by most acid, alkali and organic solvents other than hot concentrated nitric acid, and is fluid It is suitable for precision molding because it has good dimensional stability and has excellent electrical characteristics such as arc resistance and dielectric breakdown voltage.

  The attachment member 30 includes a column portion 31, a contact portion 32, a leaf spring 33, and the like, and the column portion 31 and the contact portion 32 are integrally formed with the first holding unit 10. Further, the leaf spring 33 is formed separately.

  The 1st holding | maintenance part 10 mentioned above is shown to Fig.2 (a)-(c). The 1st holding | maintenance part 10 has a shape formed by dividing a cylindrical body into two by the surface along an axial direction. The first holding portion 10 is provided with an extending portion 11, a bearing 13, a contact portion 14, and the like.

  The extension portion 11 is a plate shape having a smaller thickness than the first holding portion 10 and has an L-shaped cross-sectional shape. The extending portion 11 extends from the outer peripheral surface of the bottom portion 10 a of the first holding portion 10 to the vicinity of one end portion 10 b of the first holding portion 10 along the outer peripheral surface of the first holding portion 10.

A first locking piece 12 is provided at the extended tip of the extending portion 11. This 1st latching piece 12 latches with the 2nd latching piece 21 of the 2nd holding | maintenance part 20 mentioned later.
The bearing 13 is provided at the other end 10 c of the first holding part 10 and has a cylindrical shape in which a part of the outer peripheral surface side of the first holding part 10 is opened. The bearing 13 supports a rotation shaft 22 of a second holding unit 20 described later so as to be rotatable.

The contact portion 14 extends to the opposite side of the extended portion 11 on the outer peripheral surface of the first holding portion 10 and has a plate shape.
A pair of engagement grooves 15 are formed at both ends in the axial direction of the first holding part 10 on the inner peripheral surface of the bottom part 10 a of the first holding part 10. The engagement groove 15 engages with an engagement piece 34 of a leaf spring 33 described later.

  In addition, a column part 31 is formed on the bottom part 10a so as to extend in the outer side of the cylindrical body of the first holding part 10. A pair of columnar contact portions 32 extending in the axial direction of the first holding portion 10 is formed at the tip of the column portion 31. Further, a protrusion 35 is formed at the base portion of the contact portion 32.

  Next, the 2nd holding | maintenance part 20 mentioned above is shown to Fig.3 (a)-(f). The second holding unit 20 has a shape obtained by dividing the cylindrical body into two parts along the surface along the axial direction, and forms the cylindrical body by combining with the first holding unit 10 described above.

  A second locking piece 21 that locks with the first locking piece 12 described above is provided at one end 20 a of the second holding portion 20. In addition, the other end 20 b of the second holding unit 20 is provided with a rotating shaft 22 that is supported by the bearing 13 described above.

  Next, the above-described leaf spring 33 is shown in FIGS. The plate spring 33 is a metal plate-like member, and includes a base portion 33a having a flat plate shape and a pair of curved surface portions 33b connected to the base portion 33a and having a curved shape. The pair of curved surface portions 33b are arranged so as to extend in opposite directions from the base portion 33a.

  This base portion 33a extends in a direction orthogonal to the base portion 33a and in a direction opposite to the direction in which the curved surface portion 33b bends at both ends in a direction intersecting with the direction in which the pair of curved surface portions 33b extends. A pair of engagement pieces 34 that are folded back are provided. A through hole 36 is formed in the base portion 33a.

Next, assembly of the first holding unit 10, the second holding unit 20, and the leaf spring 33 will be described.
The first holding part 10 and the second holding part 20 may be assembled by fitting the rotating shaft 22 to the bearing 13 (see FIG. 3 for the rotating shaft 22; see FIG. 2 for the bearing 13). Thereby, the edge part 10c of the 1st holding | maintenance part 10 and the edge part 20b of the 2nd holding | maintenance part 20 connect (refer FIG. 1).

  When the leaf spring 33 and the first holding portion 10 are assembled, first, the column portion 31 and the contact portion 32 are inserted into the through hole 36 from the side of the leaf spring 33 where the engagement piece 34 extends. Subsequently, the base 33 a of the plate spring 33 and the bottom 10 a of the first holding unit 10 are overlapped to engage the engagement piece 34 with the engagement groove 15. The leaf spring 33 is fixed to the first holding part 10 by this engagement. At this time, a part of the engagement piece 34 is located on the inner peripheral surface of the first holding unit 10.

  By assembling each element as described above, the clamp 1 shown in FIGS. 1A to 1J is completed. 1A to 1J show a state in which the end 10b of the first holding unit 10 and the end 20b of the second holding unit 20 are in contact with each other and the clamp 1 is closed. At this time, the first locking piece 12 and the second locking piece 21 are locked, whereby the clamp 1 is kept closed.

Moreover, the state which the clamp 1 opened is shown to Fig.5 (a)-(c). The second holding unit 20 rotates about the rotation shaft 22.
(2) Attachment of clamp Next, attachment to the attachment object of clamp 1 is explained.

  An attachment object 40 to be attached with the clamp 1 is shown in FIGS. A through hole 41 having a shape through which the column portion 31 and the pair of contact portions 32 can pass is formed in the attachment object 40. The through hole 41 has a pair of notches 41a.

The state where the clamp 1 is attached to the attachment object 40 is shown in FIGS.
When attaching the clamp 1, first, the column part 31 and the contact part 32 are inserted into the through hole 41 from one surface 40 a of the attachment object 40. When the column part 31 is rotated about the rotation axis in this state, the positions of the through hole 41 and the contact part 32 are displaced, and when the clamp 1 is to be removed, the peripheral edge of the through hole 41 on the other surface 40b of the attachment object 40 Since the contact part 32 contacts the part, the clamp 1 cannot be removed.

At this time, since the leaf spring 33 is in contact with the one surface 40a and presses the one surface 40a, the attachment object 40 is sandwiched between the leaf spring 33 and the contact portion 32. And if the clamp 1 is rotated 90 degree | times from the position which inserted the pillar part 31 and the contact part 32 in the through-hole 41, the protrusion 35 will engage with the notch 41a (refer FIG.7 (d)). Thereby, rotation of the column part 31 is suppressed.
(3) Effects of the Invention In the clamp 1 configured as described above, the first locking piece 12 is provided directly on the first holding part 10 because the first locking piece 12 is provided on the extending part 11. Compared with the case where it has, the displacement of the 1st locking piece 12 can be performed easily. The reason for this is that the distance from the position where the extension part 11 extends to the first locking piece is longer when the distance is provided in the extension part 11 extending outward from the first holding part, and the extension It is because the spring property of the extension part 11 becomes favorable because the part 11 is formed thinner than the first holding part 10.

  And as a result of the displacement of the 1st locking piece 12 becoming easy by the spring property of the extension part 11, locking with the 1st locking piece 12 and the 2nd locking piece 21 and releasing of locking are performed easily. Will be able to.

  Therefore, the clamp 1 can be easily opened and closed even when the first holding part 10 and the second holding part 20 have high rigidity. Thereby, easy opening and closing of the clamp 1 and high durability by using a highly rigid engineering plastic (PPS in this embodiment) can be realized at the same time.

  Further, in the clamp 1 having the above-described configuration, the connection between the first holding unit 10 and the second holding unit 20 is realized by pivotally supporting the rotating shaft 22 with the bearing 13, so that it is like a conventional general-purpose resin clamp. In addition, it is not necessary to make the hinge portion thin to impart springiness or flexibility. Further, the bearing 13 is partially open so that the rotary shaft 22 can be easily attached and detached. Therefore, the bearing 13 and the rotating shaft 22 can be integrally formed of the same material as the first holding unit 10 and the second holding unit 20.

When the bearing 13 has a closed cylindrical shape, it is necessary to close the bearing by screwing in order to fit the rotating shaft 22 to the bearing 13, so that integral molding becomes difficult.
Moreover, since the clamp 1 of the said structure pinches | interposes the attachment target object 40 with the contact part 32 and the leaf | plate spring 33, the clamp 1 can be firmly fixed to the attachment target object 40. FIG. Moreover, since the clamp 1 can be attached to the position only by forming the through-hole 41 in the attachment object 40, the clamp 1 can be arrange | positioned in the desired position inside an apparatus, and an electric wire, a pipe, etc. are desired. Wiring and piping can be done at the position.

  Moreover, since the 1st holding | maintenance part 10 and the 2nd holding | maintenance part 20 are formed using PPS as a material, there is no possibility that the electric wire, pipe, etc. to hold | maintain will be damaged with a metal like the conventional metal clamps. .

  Moreover, since the leaf | plate spring 33 is metal, it has favorable spring property, and can clamp an attachment target object with a strong force. Moreover, since durability is high and the force pinched over a long period of time is maintained, it is convenient. Furthermore, since a part of the engagement piece 34 is located on the inner peripheral surface of the first holding portion 10, it is possible to take a frame ground by coming into contact with an electric wire or the like held by the clamp 1.

Further, when the clamp 1 is attached to the attachment object 40, if the leaf spring 33 is pushed and deformed by the one surface 40 a of the attachment object 40, the upper surface of the leaf spring 33 is brought into contact with the contact portion 14 and the extension portion 11. Therefore, the deformation amount of the leaf spring 33 can be defined.
(4) Correspondence The bearing 13 and the rotating shaft 22 in the above-described embodiment correspond to the hinge portion in the present invention. Moreover, the 1st locking piece 12 and the 2nd locking piece 21 in the said Example are equivalent to the latching | locking part in this invention.
(5) Modifications While the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can take various forms as long as they belong to the technical scope of the present invention. Needless to say.

  For example, in the said Example, although the structure in which the attachment member 30 was provided in the 1st holding part 10 provided with the extension part 11 was illustrated, the structure in which the attachment member 30 is provided in the 2nd holding part 20 may be sufficient. .

  Moreover, in the said Example, although the bearing 13 was provided in the 1st holding | maintenance part 10 and the structure in which the rotating shaft 22 was provided in the 2nd holding | maintenance part 20 was illustrated, the rotating shaft was provided in the 1st holding | maintenance part 10, The 2nd holding | maintenance part 20 may be provided with a bearing.

  Moreover, in the said Example, although the structure where the extension part 11 was L-shaped in cross section was illustrated, if the extension part is a shape which can obtain spring property favorably, the shape is not limited to what was mentioned above. . When the extending portion is formed of a material having high rigidity, the length of the extending portion is increased or the extending portion is formed thin and thin as long as the first locking piece 12 does not lose its function. Thus, the spring property can be improved.

  Moreover, in the said Example, although the structure in which the extension part 11 was provided only in the 1st holding | maintenance part 10 was illustrated, the extension part 23 is also provided in the 2nd holding | maintenance part 20 like the clamp 1a shown in FIG. It is good also as a structure which forms and provides the 2nd locking piece 21a in the front-end | tip.

  In the clamp 1a configured as described above, the second locking piece 21a is provided in the extending portion 23. Therefore, when the first locking piece 12 and the second locking piece 21a are locked, the extension is performed. Not only the spring property of the protruding part 11 but also the spring property of the extending part 23 can be used. Therefore, the clamp can be opened and closed more easily.

  Moreover, in the said Example, although the cylindrical shape was illustrated by the 1st holding | maintenance part 10 and the 2nd holding | maintenance part 20, it is a cylindrical body by combining a 1st holding | maintenance part and a 2nd holding | maintenance part. Is formed, the shape is not limited to a cylindrical shape. For example, a cylindrical body having a polygonal cross section may be used, or a shape in which a part of the polygon is replaced with a curve may be used.

  Moreover, in the said Example, the structure which uses PPS as a resin material which forms the 1st holding | maintenance part 10 and the 2nd holding | maintenance part 20 was illustrated. However, the resin is not limited to the above as long as it has a property of excellent heat resistance. Examples include polyetheretherketone (PEEK), polysulfone (PSU), polyetherimide (PEI), and various other resins can be used. Alternatively, PPS or other resin reinforced with glass fiber may be used.

DESCRIPTION OF SYMBOLS 1, 1a ... Clamp, 10 ... 1st holding | maintenance part, 10a ... Bottom part, 10b, 10c ... End part, 11 ... Extension part, 12 ... 1st locking piece, 13 ... Bearing, 14 ... Contact part, 15 ... Engaging groove, 20 ... second holding part, 20a, 20b ... end, 21, 21a ... second locking piece, 22 ... rotating shaft, 23 ... extension part, 30 ... mounting member, 31 ... pillar part, 32 DESCRIPTION OF SYMBOLS ... Contact part, 33 ... Leaf spring, 33a ... Base part, 33b ... Curved surface part, 34 ... Engagement piece, 35 ... Projection, 36 ... Through hole, 40 ... Attachment object, 40a, 40b ... Surface, 41 ... Through hole, 41a ... Notch

Claims (7)

A pair of first holding part and second holding part having a shape formed by dividing the cylindrical body into two along the surface along the axial direction;
A hinge part that rotatably connects the end parts of the first holding part and the second holding part;
A locking part that maintains a contact state in which the ends opposite to the end are in contact with each other,
The locking portion includes a first locking piece provided on an extending portion extending from an outer peripheral surface of the first holding portion, and a second locking portion provided on the second holding portion. And a second locking piece that stops and maintains the contact state. The hinge portion is provided at one end of the first holding portion and the second holding portion, and at the other end different from the one, and the rotation shaft The clamp according to claim 1, further comprising a bearing that is pivotally supported. The clamp according to claim 2, wherein the bearing is configured such that the rotating shaft is detachable from a predetermined direction. The clamp according to any one of claims 1 to 3, further comprising an attachment member that is provided in the first holding part or the second holding part and is attached to an external attachment object. The mounting member is
A column part inserted from one surface of the attachment object into the hole formed in the attachment object;
A contact portion that is provided on the pillar portion and contacts the attachment object from the other surface;
The clamp according to claim 4, comprising: a pressing member that presses the attachment object from the one surface. The said pressing member is metal leaf | plate springs, Comprising: At least one part area | region is located in the internal peripheral surface of a said 1st holding | maintenance part or a said 2nd holding | maintenance part. Clamp. The said 2nd locking piece is provided in the 2nd extension part extended from the outer peripheral surface of the said 2nd holding | maintenance part. The any one of Claims 1-6 characterized by the above-mentioned. Clamps.

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