JP4876282B2 - Wiring clamp - Google Patents

Description

  The present invention belongs to the technical field of wiring clamps.

  Japanese Patent Application Laid-Open No. 10-26262 (Patent Document 1) discloses a sheet metal leg part that is surface-mounted on a wiring board by soldering and a clamp part that is attached to the leg part and holds cables. A clamp is disclosed.

In the clamp for wiring of Patent Document 1, a clamp part made of synthetic resin and a metal leg part are provided separately. First, only the leg part is soldered to the wiring board by surface mounting, and then the clamp part is attached. Since it attaches with respect to a leg component, it can avoid that the heating at the time of soldering a leg component with respect to a wiring board affects a clamp component.
Japanese Patent Laid-Open No. 10-26262 (FIG. 4)

  However, since the wiring clamp disclosed in Patent Document 1 has a structure that can be soldered only on the bottom surface of the leg component, the posture of the clamp component relative to the wiring board is limited to one type.

The wiring clamp according to claim 1 is:
Sheet metal leg parts fixed to the substrate;
In a wiring clamp comprising a clamp part that is attached to the leg part and holds cables,
Wherein the leg part, before Symbol a support portion for mounting the clamping part, wherein the first flat part plate-shaped to be connected to the support portion and a second flat portion, the plate being connected to the first planar portion And a plate-like fourth flat part connected to the second flat part ,
The first flat part, the second flat part, the third flat part, and the fourth flat part can be soldered,
The first flat part and the second flat part are arranged in parallel to face each other, and extend to the side opposite to the surface to which the clamp part is attached in the support part,
The third flat part and the fourth flat part are arranged on the same plane perpendicular to the first flat part and the second flat part, and the third flat part is formed from the lower end of the first flat part to the first flat part. 2 extends toward the flat portion, the fourth flat portion extends from the lower end of the second flat portion toward the first flat portion,
The support portion is disposed in parallel with the same plane between the first flat portion and the second flat portion,
The support portion, the first flat portion, and the second flat portion are configured as suction surfaces that can be sucked by a suction nozzle of an automatic mounting machine.

  The leg parts are provided with a first flat part, a second flat part, a third flat part, and a fourth flat part that can be soldered, and the first flat part and the second flat part face each other. Arranged in parallel, the third flat part and the fourth flat part are arranged on the same plane perpendicular to the first flat part and the second flat part. That is, since the first flat portion, the second flat portion, the third flat portion, and the fourth flat portion are arranged along each side of the U-shape, the first flat portion is fixed to the substrate (for example, soldering). And fixing the second flat portion to the substrate (for example, soldering) or fixing the third flat portion and the fourth flat portion to the substrate (for example, soldering). is there. Therefore, since the posture of the clamp component with respect to the substrate can be three types, the degree of freedom of the wiring mode of the cables held by the clamp component is increased.

Note that soldering is recommended as a method of fixing the first flat portion, the second flat portion, the third flat portion, and the fourth flat portion to the substrate, but spot welding or the like may be used.
The wiring clamp according to claim 2 is:
The clamp for wiring according to claim 1,
The clamp component includes
A facing portion that faces the upper surface of the support portion when attached to the leg component;
A pair of mounting plate portions arranged to face each other with a width substantially equal to the width of the support portion;
And a locking projection provided on each of the mounting plate portions so as to protrude toward each other,
The clamp component is attached to the leg component by sandwiching the support portion between the pair of attachment plate portions and locking the locking projections to the edge of the support portion.

  The clamp part is a face part facing the upper surface of the support part when attached to the leg part, a pair of mounting plate parts arranged to face each other with a width substantially equal to the width of the support part, and convex toward each other Are provided with locking projections provided on each of the mounting plate portions. The width of the support portion is a dimension in a direction parallel to the first flat portion (or the second flat portion).

  The clamp component is attached to the leg component by holding the support portion between the pair of attachment plate portions and locking the locking projections to the end edges of the support portions. Since the length of the locking projection can be made equal to the width of the mounting plate portion on which the locking projection is provided, the locking by the locking projection, that is, the attachment of the clamp component to the leg component is stable and difficult to come off.

It should be noted that when the locking protrusion is locked to the edge of the support portion, the facing portion comes into contact with the upper surface of the support portion, or a slight clearance is provided between the facing portion and the upper surface of the support portion. Locking by the stop protrusion, that is, attachment of the clamp part to the leg part can be ensured .

The wiring clamp according to claim 3 is:
In the wiring clamp according to claim 1 or 2 ,
When the third flat part and the fourth flat part are fixed to the substrate, the rising height from the substrate is larger in the first flat part than in the second flat part.
The support part has one end connected to the upper end of the second flat part, and the other end connected to the upper end of the first flat part via a folded part,
The clamp component is provided with a recess for receiving the folded portion in a fitting state,
When the clamp component is attached to the leg component, the upper portion of the folded portion received in the recess is in a position where it can contact the cables held by the clamp component.

  In this wiring clamp, the rising height from the substrate when the third flat portion and the fourth flat portion are fixed to the substrate is larger in the first flat portion than in the second flat portion, Is connected to the upper end of the second flat portion, and the other end is connected to the upper end of the first flat portion via the folded portion. That is, a step structure is formed by the support portion and the folded portion. The clamp part is provided with a recessed part for receiving the folded part in a fitting state. When the clamp part is attached to the leg part, the upper part of the folded part received by the recessed part is held by the clamp part. It becomes a position where it can touch. For this reason, the distance between the core wire of the cables and the leg parts (folded portion) can be minimized (covering thickness of the cables), and the EMI effect by capacitive coupling can be enhanced. In addition, the cables without covering (or when the covering is partially peeled off) can be brought into contact with the leg parts (folded portions).

Wire clamp as set forth 請 Motomeko to any one of claims 3,
May be a gap is formed between the third flat portion and the fourth flat portion.

  Since a gap is formed between the third flat part and the fourth flat part, a protrusion or the like is fitted into the gap, or a space between the gap and the first flat part and the second flat part. Can be used to pass a T-shaped rail. In other words, the leg parts can be attached to the ridges or T-shaped rails so that they can move in the longitudinal direction of the rails, that is, the degree of freedom of the attachment position can be increased.

Next, embodiments of the present invention will be described based on examples of the present invention. The present invention is not limited to the following examples and the like, and it goes without saying that the present invention can be implemented in various ways without departing from the gist of the present invention.
[Example]
The wiring clamp 1 of this embodiment is composed of a leg part 2 and a clamp part 3 as shown in FIG. The leg part 2 is made of sheet metal (tin-plated steel plate in this embodiment), and the clamp part 3 is a molded product of synthetic resin (polyamide in this example).

The leg part 2 is manufactured by pressing a sheet metal, and has a substantially L shape as a whole as shown in FIG.
The leg part 2 is provided with a first flat part 11, a second flat part 12, a third flat part 13, and a fourth flat part 14, all of which can be soldered.

  The first flat portion 11 and the second flat portion 12 face each other in parallel, but the height (the vertical dimension in FIGS. 2C, 2D, and 2E) is the first flat. The part 11 is larger than the second flat part 12.

  The third flat portion 13 extends from the lower end of the first flat portion 11 toward the second flat portion 12, and the fourth flat portion 14 extends from the lower end of the second flat portion 12 toward the first flat portion 11. As shown in FIGS. 2A, 2 </ b> C, 2 </ b> D, and 2 </ b> E, the lower surfaces of the third flat portion 13 and the fourth flat portion 14 are located on the same plane. In addition, a gap is formed between the third flat portion 13 and the fourth flat portion 14.

  The leg part 2 is provided with a support portion 15 for attaching the clamp part 3. The support portion 15 is arranged in parallel with the third flat portion 13 and the fourth flat portion 14, one end portion is connected to the upper end of the second flat portion 12, and the other end portion is an angle-shaped folded portion 16. It is connected with the upper end of the 1st flat part 11 via.

  A fitting hole 17 that is used when the clamp component 3 is attached is provided in a substantially central portion of the support portion 15. Further, two notches 18 are provided at both edges, and a locking piece 19 is provided between the notches 18. As shown in FIGS. 2B, 2C, 2E, and 2F, the locking piece 19 slightly protrudes on both sides.

As shown in FIG. 3, the clamp component 3 is provided with a grip base 21. The upper surface of the grip base 21 is substantially semicircular in order to hold the cables well.
The lower part of the grip base 21 is convex downward in FIGS. 3C and 3F, but the center part is a flat facing part 22. A fitting projection 23 is erected on the facing portion 22.

  In addition, a pair of mounting plate portions 24 are erected on the lower portion of the grip base 21. These mounting plate portions 24 are arranged so as to face each other with the facing portion 22 and the fitting projection 23 interposed therebetween. The width of the mounting plate part 24 (shown in the horizontal dimension in FIGS. 3B and 3D and the vertical dimension in FIG. 3E) is the width of the support part 15 of the leg part 2 (see FIG. 2). Almost equal. The mounting plate portion 24 is provided with locking protrusions 25 that are convex toward each other.

  On the other hand, a grip arm 27 and a lock portion 28 are connected to the upper portion of the grip base 21. Moreover, the recessed part 29 for receiving the folding | returning part 16 of the leg component 2 in a fitting shape is provided in one side part.

The gripping arm 27 includes a fixed half 27a connected to the grip base 21, a hinge 27b, and a movable half 27c connected to the fixed half 27a via the hinge 27b.
A U-shaped engaging / disengaging operation portion 31 is connected to the distal end portion of the movable half portion 27c. The engagement / disengagement operation unit 31 is provided with a locking projection 32 and an operation knob 33.

  A pressing plate 35 extends from the inner surface of the movable half 27c. The holding plate 35 has a substantially mountain shape, and the tip thereof reaches the vicinity of the hinge 27b. The holding plate 35 is provided with an entrainment preventing portion 36, and the entrainment preventing portion 36 protrudes to the side of the gripping arm 27 as well shown in FIGS. 3 (b) and 3 (d).

  The lock portion 28 includes an inner guide 38 and an outer guide 39, and the outer guide 39 is provided with a lock protrusion 41 that protrudes toward the inner guide 38. The lock protrusion 41 is a protrusion for locking the locking projection 32 of the engaging / disengaging operation portion 31. When the locking protrusion 41 is pushed between the inner guide 38 and the outer guide 39 while elastically deforming the engaging / disengaging operation portion 31, FIG. As shown in FIG. 4, the locking projection 32 can be locked to the lock protrusion 41.

  When the locking projection 32 is locked to the lock protrusion 41, the portion surrounded by the grip base 21, the fixed half 27a, the lock 28 and the pressing plate 35 becomes a closed ring shape. Can hold.

  In this state, the entanglement preventing portion 36 of the presser plate 35 protrudes to the side of the gripping arm 27, so that a cable or the like is prevented from entering between the presser plate 35 and the gripping arm 27.

Further, if the operation knob 33 is operated, the engagement can be released and the engagement / disengagement operation portion 31 can be pulled out from between the inner guide 38 and the outer guide 39.
As described above, the wiring clamp 1 of the present embodiment is composed of the leg part 2 and the clamp part 3, but the sheet metal leg part 2 and the clamp part 3 which is a synthetic resin molded product are separately provided. Must be manufactured and combined.

  The connection between the leg part 2 and the clamp part 3 is performed by locking the locking projection 25 of the clamp part 3 to the edge of the support portion 15. That is, the support part 15 is sandwiched between the locking protrusion 25 and the facing part 22, and the leg part 2 and the clamp part 3 are connected.

  This connecting operation can be performed only by pressing the clamp part 3 against the leg part 2 from above. However, when the force is applied to the fixed half part 27a and the lock part 28 of the gripping arm 27, the attachment is performed. Since the gaps between the tips of the plate portions 24, that is, between the locking projections 25, are opened, the connection is facilitated in this way. Moreover, if the same force is applied after connection and the front-end | tip part of the attachment board part 24 is opened, the latching by the latching protrusion 25 will be cancelled | released easily, and the clamp component 3 and the leg component 2 can be isolate | separated.

When connecting the leg part 2 and the clamp part 3, the fitting protrusion 23 of the clamp part 3 is fitted into the fitting hole 17 of the leg part 2. Since the fitting projection 23 is fitted into the fitting hole 17, a part of the support portion 15 (fitting hole 17 to the end edge) is sandwiched between the fitting projection 23 and the mounting plate portion 24. , Make the connection even more secure. Further, the fitting between the fitting protrusion 23 and the fitting hole 17 also has an effect of preventing the displacement and the fall of the clamp component 3 after the connection.
[Example of fixing the wiring clamp to the board]
The wiring clamp 1 is used by being fixed to a substrate (in the illustrated example, a printed circuit board 50) as illustrated in FIGS. FIG. 5 shows an example in which the third flat part 13 and the fourth flat part 14 are fixed to the surface of the printed circuit board 50 by soldering. FIG. 6 shows the first flat part 11 fixed to the surface of the printed circuit board 50 by soldering. FIG. 7 shows an example in which the second flat portion 12 is fixed to the surface of the printed circuit board 50 by soldering.

  6B shows a case where a hole 51 is formed in the printed circuit board 50, and the holding base portion 21, the fixed half portion 27a, the locking portion 28, and the pressing plate are held when the locking projection 32 is locked to the locking projection 41. In this example, the portion (see FIG. 4) surrounded by 35 and having a closed annular shape is fixed at a position corresponding to the hole 51. In this way, the cable passed through the hole 51 can be held by the wiring clamp 1.

  In order to fix the wiring clamp 1 to the printed circuit board 50, only the leg part 2 (not connected to the clamp part 3) is in the posture illustrated in FIGS. 5 to 7, that is, the third flat part 13 and the fourth flat part 14, The first flat part 11 or the second flat part 12 is fixed to the surface of the printed circuit board 50 by soldering. When the clamp part 3 is attached to the fixed leg part 2 as described above, the wiring clamp 1 is completed on the printed board 50.

  When the leg component 2 is surface-mounted on the printed board 50, for example, if the third flat portion 13 and the fourth flat portion 14 are soldered (see FIG. 5), the third flat portion 13 and the fourth flat portion 14 The surface that faces the flat portions 11, 12, 13, and 14 to be soldered can be used as a suction surface such that the parallel support portion 15 is sucked by the suction nozzle of the automatic mounting machine.

Since the leg part 2 is made of sheet metal, it can be fixed as in the above example by spot welding depending on the material of the substrate.
When the wiring clamp 1 is fixed to the printed circuit board 50 in the manner illustrated in FIG. 6 or FIG. 7, the cable or the like held by the clamp component 3 is bent in the parallel direction to the printed circuit board 50, and the cable and the leg component. 2 can be brought into contact with or close to each other at two locations (FIG. 6) of the folded portion 16 and the second flat portion 12 (FIG. 6) and at two locations (FIG. 7) of the folded portion 16 and the first flat portion 11. The EMI effect can be improved.
[Example of attaching a wiring clamp to a rail]
Since a gap is formed between the third flat part 13 and the fourth flat part 14, the leg part 2, that is, the metal T-shaped rail 53 is used as shown in FIG. The wiring clamp 1 can be attached and used.

In this case, the leg part 2 is first attached to the rail 53. In this state, the leg part 2 can be moved in the longitudinal direction of the rail 53. Thereafter, the clamp part 3 is attached to the leg part 2. Then, since the lower end of the mounting plate portion 24 is in close contact with the upper surface of the rail 53, it is difficult to move the leg component 2 in the longitudinal direction of the rail 53 (the position is determined).
[effect]
In the wiring clamp 1 of the embodiment, the leg component 2 is provided with a first flat part 11, a second flat part 12, a third flat part 13 and a fourth flat part 14 that can be soldered. The first flat part 11 and the second flat part 12 are arranged facing each other in parallel, and the third flat part 13 and the fourth flat part 14 are the same perpendicular to the first flat part 11 and the second flat part 12. It is arranged on a plane.

  Therefore, the first flat portion 11 is fixed to the substrate (see FIG. 6), the second flat portion 12 is fixed to the substrate (see FIG. 7), or the third flat portion 13 and the fourth flat portion 14 are fixed to the substrate (see FIG. 5) and can be fixed to the substrate in three types. Accordingly, since there are three types of postures of the clamp component 3 with respect to the substrate, the degree of freedom of the wiring mode of the cables held by the clamp component 3 is increased.

  Moreover, since the clearance gap is formed between the 3rd flat part 13 and the 4th flat part 14, the T-shaped rail 53 can be passed through this clearance gap (refer FIG. 8). In this case, the leg part 2 is mounted on the T-shaped rail 53, and the clamp part 3 can move in the longitudinal direction of the rail 53 in an unconnected state. The wiring clamp 1 can be fixed by selecting the position.

  In relation to EMI countermeasures, a step structure is formed between the support portion 15 and the folded portion 16, and the clamp component 3 is provided with a recess 29 that receives the folded portion 16 in a fitting state. Is attached to the leg part 2, the upper part of the folded part 16 received in the concave part 29 protrudes from the upper surface of the grip base 21, and is in a position where it can come into contact with cables held by the clamp part 3. For this reason, the distance between the core wire of the cables and the leg part 2 (folded portion 16) can be minimized (covering thickness of the cables), and the EMI effect by capacitive coupling can be enhanced. In addition, the cables without covering (or when the covering is partially peeled) can be brought into contact with the leg part 2 (folded portion 16).

The wiring clamp 1 is attached to the substrate or the like in such a form that the leg component 2 is first attached to the substrate or the like, and then the clamp component 3 is attached to the leg component 2.
The clamp part 3 is attached to the leg part 2 in such a manner that the support protrusions 15 are sandwiched between the pair of attachment plate parts 24 of the clamp part 3 and the locking protrusions 25 are locked to the edges of the support parts 15, respectively. Done in Since the length of the locking projection 25 can be made substantially equal to the width of the mounting plate portion 24 on which the locking projection 25 is provided, the locking by the locking projection 25, that is, the attachment of the clamp component 3 to the leg component 2 is stable. It becomes difficult to come off.

  Further, when the locking projection 25 is locked to the edge of the support portion 15, the facing portion 22 abuts on the upper surface of the support portion 15 or a slight clearance is formed between the facing portion 22 and the upper surface of the support portion 15. Therefore, the locking by the locking projection 25, that is, the attachment of the clamp part 3 to the leg part 2 can be ensured.

  The support portion 15 that is locked by the locking protrusion 25 is provided with a notch 18, and a locking piece 19 is provided between the notches 18, but the locking piece 19 slightly protrudes. It is easy to deform. For this reason, when an unexpected external force is exerted on the clamp component 3 attached by the locking projection 25, only the locking piece 19 is deformed by the external force, so that the leg component 2 and the printed board 50 are It can be prevented from being destroyed.

FIG. 4 is a plan view (a), a left side view (b), a front view (c), a right side view (d), a bottom view (e), and a rear view (f) of the wiring clamp of the embodiment. It is a rear view (a), a top view (b), a left side view (c), a front view (d), a right side view (e), and a bottom view (f) of the leg part of the embodiment. It is the top view (a), left view (b), front view (c), right view (d), bottom view (e), and back view (f) of the clamp component of an Example. In the clamp for wiring of an Example, it is a front view of the state which made the latching convex part latch to a lock protrusion, and was made into the closed ring shape. Explanatory drawing of the attachment example (1) of the clamp for wiring of an Example. Explanatory drawing of the attachment example (2) of the clamp for wiring of an Example. Explanatory drawing of the attachment example (3) of the clamp for wiring of an Example. Explanatory drawing of the example which attached the clamp for wiring of the Example to the rail.

Explanation of symbols

1 ... Clamp for wiring,
2 ... Leg parts,
3 ... Clamp parts,
11 ... 1st flat part,
12 ... 2nd flat part,
13 ... 3rd flat part,
14 ... 4th flat part,
15 ... support part,
16 ... turn-up part,
22 ... facing part,
23 ... fitting protrusion,
24 ... Mounting plate part,
25 ... locking protrusion,
29 ... concave portion.

Claims (3)

Sheet metal leg parts fixed to the substrate;
In a wiring clamp comprising a clamp part that is attached to the leg part and holds cables,
Wherein the leg part, before Symbol a support portion for mounting the clamping part, wherein the first flat part plate-shaped to be connected to the support portion and a second flat portion, the plate being connected to the first planar portion And a plate-like fourth flat part connected to the second flat part ,
The first flat part, the second flat part, the third flat part, and the fourth flat part can be soldered,
The first flat part and the second flat part are arranged in parallel to face each other, and extend to the side opposite to the surface to which the clamp part is attached in the support part,
The third flat part and the fourth flat part are arranged on the same plane perpendicular to the first flat part and the second flat part, and the third flat part is formed from the lower end of the first flat part to the first flat part. 2 extends toward the flat portion, the fourth flat portion extends from the lower end of the second flat portion toward the first flat portion,
The support portion is disposed in parallel with the same plane between the first flat portion and the second flat portion,
The wiring clamp according to claim 1, wherein the support portion, the first flat portion, and the second flat portion are configured as suction surfaces that can be suctioned by a suction nozzle of an automatic mounting machine. The clamp for wiring according to claim 1,
The clamp component includes
A facing portion that faces the upper surface of the support portion when attached to the leg component;
A pair of mounting plate portions arranged to face each other with a width substantially equal to the width of the support portion;
And a locking projection provided on each of the mounting plate portions so as to protrude toward each other,
The clamp part is attached to the leg part by sandwiching the support part between the pair of attachment plate parts and locking the locking protrusions to the edge of the support part. For clamps.   In the wiring clamp according to claim 1 or 2,
  When the third flat part and the fourth flat part are fixed to the substrate, the rising height from the substrate is larger in the first flat part than in the second flat part.
  The support part has one end connected to the upper end of the second flat part, and the other end connected to the upper end of the first flat part via a folded part,
  The clamp component is provided with a recess for receiving the folded portion in a fitting state,
  When the clamp component is attached to the leg component, the upper portion of the folded portion received in the recess is in a position where it can contact the cables held by the clamp component.
A wiring clamp characterized by that.

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